1 /* Subroutines for insn-output.c for HPPA.
2 Copyright (C) 1992-2019 Free Software Foundation, Inc.
3 Contributed by Tim Moore (moore@cs.utah.edu), based on sparc.c
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #define IN_TARGET_CODE 1
25 #include "coretypes.h"
33 #include "stringpool.h"
39 #include "diagnostic-core.h"
40 #include "insn-attr.h"
42 #include "fold-const.h"
43 #include "stor-layout.h"
51 #include "common/common-target.h"
52 #include "langhooks.h"
57 /* This file should be included last. */
58 #include "target-def.h"
60 /* Return nonzero if there is a bypass for the output of
61 OUT_INSN and the fp store IN_INSN. */
63 pa_fpstore_bypass_p (rtx_insn
*out_insn
, rtx_insn
*in_insn
)
65 machine_mode store_mode
;
66 machine_mode other_mode
;
69 if (recog_memoized (in_insn
) < 0
70 || (get_attr_type (in_insn
) != TYPE_FPSTORE
71 && get_attr_type (in_insn
) != TYPE_FPSTORE_LOAD
)
72 || recog_memoized (out_insn
) < 0)
75 store_mode
= GET_MODE (SET_SRC (PATTERN (in_insn
)));
77 set
= single_set (out_insn
);
81 other_mode
= GET_MODE (SET_SRC (set
));
83 return (GET_MODE_SIZE (store_mode
) == GET_MODE_SIZE (other_mode
));
87 #ifndef DO_FRAME_NOTES
88 #ifdef INCOMING_RETURN_ADDR_RTX
89 #define DO_FRAME_NOTES 1
91 #define DO_FRAME_NOTES 0
95 static void pa_option_override (void);
96 static void copy_reg_pointer (rtx
, rtx
);
97 static void fix_range (const char *);
98 static int hppa_register_move_cost (machine_mode mode
, reg_class_t
,
100 static int hppa_address_cost (rtx
, machine_mode mode
, addr_space_t
, bool);
101 static bool hppa_rtx_costs (rtx
, machine_mode
, int, int, int *, bool);
102 static inline rtx
force_mode (machine_mode
, rtx
);
103 static void pa_reorg (void);
104 static void pa_combine_instructions (void);
105 static int pa_can_combine_p (rtx_insn
*, rtx_insn
*, rtx_insn
*, int, rtx
,
107 static bool forward_branch_p (rtx_insn
*);
108 static void compute_zdepwi_operands (unsigned HOST_WIDE_INT
, unsigned *);
109 static void compute_zdepdi_operands (unsigned HOST_WIDE_INT
, unsigned *);
110 static int compute_cpymem_length (rtx_insn
*);
111 static int compute_clrmem_length (rtx_insn
*);
112 static bool pa_assemble_integer (rtx
, unsigned int, int);
113 static void remove_useless_addtr_insns (int);
114 static void store_reg (int, HOST_WIDE_INT
, int);
115 static void store_reg_modify (int, int, HOST_WIDE_INT
);
116 static void load_reg (int, HOST_WIDE_INT
, int);
117 static void set_reg_plus_d (int, int, HOST_WIDE_INT
, int);
118 static rtx
pa_function_value (const_tree
, const_tree
, bool);
119 static rtx
pa_libcall_value (machine_mode
, const_rtx
);
120 static bool pa_function_value_regno_p (const unsigned int);
121 static void pa_output_function_prologue (FILE *) ATTRIBUTE_UNUSED
;
122 static void pa_linux_output_function_prologue (FILE *) ATTRIBUTE_UNUSED
;
123 static void update_total_code_bytes (unsigned int);
124 static void pa_output_function_epilogue (FILE *);
125 static int pa_adjust_cost (rtx_insn
*, int, rtx_insn
*, int, unsigned int);
126 static int pa_issue_rate (void);
127 static int pa_reloc_rw_mask (void);
128 static void pa_som_asm_init_sections (void) ATTRIBUTE_UNUSED
;
129 static section
*pa_som_tm_clone_table_section (void) ATTRIBUTE_UNUSED
;
130 static section
*pa_select_section (tree
, int, unsigned HOST_WIDE_INT
)
132 static void pa_encode_section_info (tree
, rtx
, int);
133 static const char *pa_strip_name_encoding (const char *);
134 static bool pa_function_ok_for_sibcall (tree
, tree
);
135 static void pa_globalize_label (FILE *, const char *)
137 static void pa_asm_output_mi_thunk (FILE *, tree
, HOST_WIDE_INT
,
138 HOST_WIDE_INT
, tree
);
139 #if !defined(USE_COLLECT2)
140 static void pa_asm_out_constructor (rtx
, int);
141 static void pa_asm_out_destructor (rtx
, int);
143 static void pa_init_builtins (void);
144 static rtx
pa_expand_builtin (tree
, rtx
, rtx
, machine_mode mode
, int);
145 static rtx
hppa_builtin_saveregs (void);
146 static void hppa_va_start (tree
, rtx
);
147 static tree
hppa_gimplify_va_arg_expr (tree
, tree
, gimple_seq
*, gimple_seq
*);
148 static bool pa_scalar_mode_supported_p (scalar_mode
);
149 static bool pa_commutative_p (const_rtx x
, int outer_code
);
150 static void copy_fp_args (rtx_insn
*) ATTRIBUTE_UNUSED
;
151 static int length_fp_args (rtx_insn
*) ATTRIBUTE_UNUSED
;
152 static rtx
hppa_legitimize_address (rtx
, rtx
, machine_mode
);
153 static inline void pa_file_start_level (void) ATTRIBUTE_UNUSED
;
154 static inline void pa_file_start_space (int) ATTRIBUTE_UNUSED
;
155 static inline void pa_file_start_file (int) ATTRIBUTE_UNUSED
;
156 static inline void pa_file_start_mcount (const char*) ATTRIBUTE_UNUSED
;
157 static void pa_elf_file_start (void) ATTRIBUTE_UNUSED
;
158 static void pa_som_file_start (void) ATTRIBUTE_UNUSED
;
159 static void pa_linux_file_start (void) ATTRIBUTE_UNUSED
;
160 static void pa_hpux64_gas_file_start (void) ATTRIBUTE_UNUSED
;
161 static void pa_hpux64_hpas_file_start (void) ATTRIBUTE_UNUSED
;
162 static void output_deferred_plabels (void);
163 static void output_deferred_profile_counters (void) ATTRIBUTE_UNUSED
;
164 static void pa_file_end (void);
165 static void pa_init_libfuncs (void);
166 static rtx
pa_struct_value_rtx (tree
, int);
167 static bool pa_pass_by_reference (cumulative_args_t
,
168 const function_arg_info
&);
169 static int pa_arg_partial_bytes (cumulative_args_t
, const function_arg_info
&);
170 static void pa_function_arg_advance (cumulative_args_t
,
171 const function_arg_info
&);
172 static rtx
pa_function_arg (cumulative_args_t
, const function_arg_info
&);
173 static pad_direction
pa_function_arg_padding (machine_mode
, const_tree
);
174 static unsigned int pa_function_arg_boundary (machine_mode
, const_tree
);
175 static struct machine_function
* pa_init_machine_status (void);
176 static reg_class_t
pa_secondary_reload (bool, rtx
, reg_class_t
,
178 secondary_reload_info
*);
179 static bool pa_secondary_memory_needed (machine_mode
,
180 reg_class_t
, reg_class_t
);
181 static void pa_extra_live_on_entry (bitmap
);
182 static machine_mode
pa_promote_function_mode (const_tree
,
186 static void pa_asm_trampoline_template (FILE *);
187 static void pa_trampoline_init (rtx
, tree
, rtx
);
188 static rtx
pa_trampoline_adjust_address (rtx
);
189 static rtx
pa_delegitimize_address (rtx
);
190 static bool pa_print_operand_punct_valid_p (unsigned char);
191 static rtx
pa_internal_arg_pointer (void);
192 static bool pa_can_eliminate (const int, const int);
193 static void pa_conditional_register_usage (void);
194 static machine_mode
pa_c_mode_for_suffix (char);
195 static section
*pa_function_section (tree
, enum node_frequency
, bool, bool);
196 static bool pa_cannot_force_const_mem (machine_mode
, rtx
);
197 static bool pa_legitimate_constant_p (machine_mode
, rtx
);
198 static unsigned int pa_section_type_flags (tree
, const char *, int);
199 static bool pa_legitimate_address_p (machine_mode
, rtx
, bool);
200 static bool pa_callee_copies (cumulative_args_t
, machine_mode
,
202 static unsigned int pa_hard_regno_nregs (unsigned int, machine_mode
);
203 static bool pa_hard_regno_mode_ok (unsigned int, machine_mode
);
204 static bool pa_modes_tieable_p (machine_mode
, machine_mode
);
205 static bool pa_can_change_mode_class (machine_mode
, machine_mode
, reg_class_t
);
206 static HOST_WIDE_INT
pa_starting_frame_offset (void);
208 /* The following extra sections are only used for SOM. */
209 static GTY(()) section
*som_readonly_data_section
;
210 static GTY(()) section
*som_one_only_readonly_data_section
;
211 static GTY(()) section
*som_one_only_data_section
;
212 static GTY(()) section
*som_tm_clone_table_section
;
214 /* Counts for the number of callee-saved general and floating point
215 registers which were saved by the current function's prologue. */
216 static int gr_saved
, fr_saved
;
218 /* Boolean indicating whether the return pointer was saved by the
219 current function's prologue. */
220 static bool rp_saved
;
222 static rtx
find_addr_reg (rtx
);
224 /* Keep track of the number of bytes we have output in the CODE subspace
225 during this compilation so we'll know when to emit inline long-calls. */
226 unsigned long total_code_bytes
;
228 /* The last address of the previous function plus the number of bytes in
229 associated thunks that have been output. This is used to determine if
230 a thunk can use an IA-relative branch to reach its target function. */
231 static unsigned int last_address
;
233 /* Variables to handle plabels that we discover are necessary at assembly
234 output time. They are output after the current function. */
235 struct GTY(()) deferred_plabel
240 static GTY((length ("n_deferred_plabels"))) struct deferred_plabel
*
242 static size_t n_deferred_plabels
= 0;
244 /* Initialize the GCC target structure. */
246 #undef TARGET_OPTION_OVERRIDE
247 #define TARGET_OPTION_OVERRIDE pa_option_override
249 #undef TARGET_ASM_ALIGNED_HI_OP
250 #define TARGET_ASM_ALIGNED_HI_OP "\t.half\t"
251 #undef TARGET_ASM_ALIGNED_SI_OP
252 #define TARGET_ASM_ALIGNED_SI_OP "\t.word\t"
253 #undef TARGET_ASM_ALIGNED_DI_OP
254 #define TARGET_ASM_ALIGNED_DI_OP "\t.dword\t"
255 #undef TARGET_ASM_UNALIGNED_HI_OP
256 #define TARGET_ASM_UNALIGNED_HI_OP TARGET_ASM_ALIGNED_HI_OP
257 #undef TARGET_ASM_UNALIGNED_SI_OP
258 #define TARGET_ASM_UNALIGNED_SI_OP TARGET_ASM_ALIGNED_SI_OP
259 #undef TARGET_ASM_UNALIGNED_DI_OP
260 #define TARGET_ASM_UNALIGNED_DI_OP TARGET_ASM_ALIGNED_DI_OP
261 #undef TARGET_ASM_INTEGER
262 #define TARGET_ASM_INTEGER pa_assemble_integer
264 #undef TARGET_ASM_FUNCTION_EPILOGUE
265 #define TARGET_ASM_FUNCTION_EPILOGUE pa_output_function_epilogue
267 #undef TARGET_FUNCTION_VALUE
268 #define TARGET_FUNCTION_VALUE pa_function_value
269 #undef TARGET_LIBCALL_VALUE
270 #define TARGET_LIBCALL_VALUE pa_libcall_value
271 #undef TARGET_FUNCTION_VALUE_REGNO_P
272 #define TARGET_FUNCTION_VALUE_REGNO_P pa_function_value_regno_p
274 #undef TARGET_LEGITIMIZE_ADDRESS
275 #define TARGET_LEGITIMIZE_ADDRESS hppa_legitimize_address
277 #undef TARGET_SCHED_ADJUST_COST
278 #define TARGET_SCHED_ADJUST_COST pa_adjust_cost
279 #undef TARGET_SCHED_ISSUE_RATE
280 #define TARGET_SCHED_ISSUE_RATE pa_issue_rate
282 #undef TARGET_ENCODE_SECTION_INFO
283 #define TARGET_ENCODE_SECTION_INFO pa_encode_section_info
284 #undef TARGET_STRIP_NAME_ENCODING
285 #define TARGET_STRIP_NAME_ENCODING pa_strip_name_encoding
287 #undef TARGET_FUNCTION_OK_FOR_SIBCALL
288 #define TARGET_FUNCTION_OK_FOR_SIBCALL pa_function_ok_for_sibcall
290 #undef TARGET_COMMUTATIVE_P
291 #define TARGET_COMMUTATIVE_P pa_commutative_p
293 #undef TARGET_ASM_OUTPUT_MI_THUNK
294 #define TARGET_ASM_OUTPUT_MI_THUNK pa_asm_output_mi_thunk
295 #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
296 #define TARGET_ASM_CAN_OUTPUT_MI_THUNK default_can_output_mi_thunk_no_vcall
298 #undef TARGET_ASM_FILE_END
299 #define TARGET_ASM_FILE_END pa_file_end
301 #undef TARGET_ASM_RELOC_RW_MASK
302 #define TARGET_ASM_RELOC_RW_MASK pa_reloc_rw_mask
304 #undef TARGET_PRINT_OPERAND_PUNCT_VALID_P
305 #define TARGET_PRINT_OPERAND_PUNCT_VALID_P pa_print_operand_punct_valid_p
307 #if !defined(USE_COLLECT2)
308 #undef TARGET_ASM_CONSTRUCTOR
309 #define TARGET_ASM_CONSTRUCTOR pa_asm_out_constructor
310 #undef TARGET_ASM_DESTRUCTOR
311 #define TARGET_ASM_DESTRUCTOR pa_asm_out_destructor
314 #undef TARGET_INIT_BUILTINS
315 #define TARGET_INIT_BUILTINS pa_init_builtins
317 #undef TARGET_EXPAND_BUILTIN
318 #define TARGET_EXPAND_BUILTIN pa_expand_builtin
320 #undef TARGET_REGISTER_MOVE_COST
321 #define TARGET_REGISTER_MOVE_COST hppa_register_move_cost
322 #undef TARGET_RTX_COSTS
323 #define TARGET_RTX_COSTS hppa_rtx_costs
324 #undef TARGET_ADDRESS_COST
325 #define TARGET_ADDRESS_COST hppa_address_cost
327 #undef TARGET_MACHINE_DEPENDENT_REORG
328 #define TARGET_MACHINE_DEPENDENT_REORG pa_reorg
330 #undef TARGET_INIT_LIBFUNCS
331 #define TARGET_INIT_LIBFUNCS pa_init_libfuncs
333 #undef TARGET_PROMOTE_FUNCTION_MODE
334 #define TARGET_PROMOTE_FUNCTION_MODE pa_promote_function_mode
335 #undef TARGET_PROMOTE_PROTOTYPES
336 #define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true
338 #undef TARGET_STRUCT_VALUE_RTX
339 #define TARGET_STRUCT_VALUE_RTX pa_struct_value_rtx
340 #undef TARGET_RETURN_IN_MEMORY
341 #define TARGET_RETURN_IN_MEMORY pa_return_in_memory
342 #undef TARGET_MUST_PASS_IN_STACK
343 #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size
344 #undef TARGET_PASS_BY_REFERENCE
345 #define TARGET_PASS_BY_REFERENCE pa_pass_by_reference
346 #undef TARGET_CALLEE_COPIES
347 #define TARGET_CALLEE_COPIES pa_callee_copies
348 #undef TARGET_ARG_PARTIAL_BYTES
349 #define TARGET_ARG_PARTIAL_BYTES pa_arg_partial_bytes
350 #undef TARGET_FUNCTION_ARG
351 #define TARGET_FUNCTION_ARG pa_function_arg
352 #undef TARGET_FUNCTION_ARG_ADVANCE
353 #define TARGET_FUNCTION_ARG_ADVANCE pa_function_arg_advance
354 #undef TARGET_FUNCTION_ARG_PADDING
355 #define TARGET_FUNCTION_ARG_PADDING pa_function_arg_padding
356 #undef TARGET_FUNCTION_ARG_BOUNDARY
357 #define TARGET_FUNCTION_ARG_BOUNDARY pa_function_arg_boundary
359 #undef TARGET_EXPAND_BUILTIN_SAVEREGS
360 #define TARGET_EXPAND_BUILTIN_SAVEREGS hppa_builtin_saveregs
361 #undef TARGET_EXPAND_BUILTIN_VA_START
362 #define TARGET_EXPAND_BUILTIN_VA_START hppa_va_start
363 #undef TARGET_GIMPLIFY_VA_ARG_EXPR
364 #define TARGET_GIMPLIFY_VA_ARG_EXPR hppa_gimplify_va_arg_expr
366 #undef TARGET_SCALAR_MODE_SUPPORTED_P
367 #define TARGET_SCALAR_MODE_SUPPORTED_P pa_scalar_mode_supported_p
369 #undef TARGET_CANNOT_FORCE_CONST_MEM
370 #define TARGET_CANNOT_FORCE_CONST_MEM pa_cannot_force_const_mem
372 #undef TARGET_SECONDARY_RELOAD
373 #define TARGET_SECONDARY_RELOAD pa_secondary_reload
374 #undef TARGET_SECONDARY_MEMORY_NEEDED
375 #define TARGET_SECONDARY_MEMORY_NEEDED pa_secondary_memory_needed
377 #undef TARGET_EXTRA_LIVE_ON_ENTRY
378 #define TARGET_EXTRA_LIVE_ON_ENTRY pa_extra_live_on_entry
380 #undef TARGET_ASM_TRAMPOLINE_TEMPLATE
381 #define TARGET_ASM_TRAMPOLINE_TEMPLATE pa_asm_trampoline_template
382 #undef TARGET_TRAMPOLINE_INIT
383 #define TARGET_TRAMPOLINE_INIT pa_trampoline_init
384 #undef TARGET_TRAMPOLINE_ADJUST_ADDRESS
385 #define TARGET_TRAMPOLINE_ADJUST_ADDRESS pa_trampoline_adjust_address
386 #undef TARGET_DELEGITIMIZE_ADDRESS
387 #define TARGET_DELEGITIMIZE_ADDRESS pa_delegitimize_address
388 #undef TARGET_INTERNAL_ARG_POINTER
389 #define TARGET_INTERNAL_ARG_POINTER pa_internal_arg_pointer
390 #undef TARGET_CAN_ELIMINATE
391 #define TARGET_CAN_ELIMINATE pa_can_eliminate
392 #undef TARGET_CONDITIONAL_REGISTER_USAGE
393 #define TARGET_CONDITIONAL_REGISTER_USAGE pa_conditional_register_usage
394 #undef TARGET_C_MODE_FOR_SUFFIX
395 #define TARGET_C_MODE_FOR_SUFFIX pa_c_mode_for_suffix
396 #undef TARGET_ASM_FUNCTION_SECTION
397 #define TARGET_ASM_FUNCTION_SECTION pa_function_section
399 #undef TARGET_LEGITIMATE_CONSTANT_P
400 #define TARGET_LEGITIMATE_CONSTANT_P pa_legitimate_constant_p
401 #undef TARGET_SECTION_TYPE_FLAGS
402 #define TARGET_SECTION_TYPE_FLAGS pa_section_type_flags
403 #undef TARGET_LEGITIMATE_ADDRESS_P
404 #define TARGET_LEGITIMATE_ADDRESS_P pa_legitimate_address_p
407 #define TARGET_LRA_P hook_bool_void_false
409 #undef TARGET_HARD_REGNO_NREGS
410 #define TARGET_HARD_REGNO_NREGS pa_hard_regno_nregs
411 #undef TARGET_HARD_REGNO_MODE_OK
412 #define TARGET_HARD_REGNO_MODE_OK pa_hard_regno_mode_ok
413 #undef TARGET_MODES_TIEABLE_P
414 #define TARGET_MODES_TIEABLE_P pa_modes_tieable_p
416 #undef TARGET_CAN_CHANGE_MODE_CLASS
417 #define TARGET_CAN_CHANGE_MODE_CLASS pa_can_change_mode_class
419 #undef TARGET_CONSTANT_ALIGNMENT
420 #define TARGET_CONSTANT_ALIGNMENT constant_alignment_word_strings
422 #undef TARGET_STARTING_FRAME_OFFSET
423 #define TARGET_STARTING_FRAME_OFFSET pa_starting_frame_offset
425 #undef TARGET_HAVE_SPECULATION_SAFE_VALUE
426 #define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
428 struct gcc_target targetm
= TARGET_INITIALIZER
;
430 /* Parse the -mfixed-range= option string. */
433 fix_range (const char *const_str
)
436 char *str
, *dash
, *comma
;
438 /* str must be of the form REG1'-'REG2{,REG1'-'REG} where REG1 and
439 REG2 are either register names or register numbers. The effect
440 of this option is to mark the registers in the range from REG1 to
441 REG2 as ``fixed'' so they won't be used by the compiler. This is
442 used, e.g., to ensure that kernel mode code doesn't use fr4-fr31. */
444 i
= strlen (const_str
);
445 str
= (char *) alloca (i
+ 1);
446 memcpy (str
, const_str
, i
+ 1);
450 dash
= strchr (str
, '-');
453 warning (0, "value of %<-mfixed-range%> must have form REG1-REG2");
458 comma
= strchr (dash
+ 1, ',');
462 first
= decode_reg_name (str
);
465 warning (0, "unknown register name: %s", str
);
469 last
= decode_reg_name (dash
+ 1);
472 warning (0, "unknown register name: %s", dash
+ 1);
480 warning (0, "%s-%s is an empty range", str
, dash
+ 1);
484 for (i
= first
; i
<= last
; ++i
)
485 fixed_regs
[i
] = call_used_regs
[i
] = 1;
494 /* Check if all floating point registers have been fixed. */
495 for (i
= FP_REG_FIRST
; i
<= FP_REG_LAST
; i
++)
500 target_flags
|= MASK_DISABLE_FPREGS
;
503 /* Implement the TARGET_OPTION_OVERRIDE hook. */
506 pa_option_override (void)
509 cl_deferred_option
*opt
;
510 vec
<cl_deferred_option
> *v
511 = (vec
<cl_deferred_option
> *) pa_deferred_options
;
514 FOR_EACH_VEC_ELT (*v
, i
, opt
)
516 switch (opt
->opt_index
)
518 case OPT_mfixed_range_
:
519 fix_range (opt
->arg
);
527 if (flag_pic
&& TARGET_PORTABLE_RUNTIME
)
529 warning (0, "PIC code generation is not supported in the portable runtime model");
532 if (flag_pic
&& TARGET_FAST_INDIRECT_CALLS
)
534 warning (0, "PIC code generation is not compatible with fast indirect calls");
537 if (! TARGET_GAS
&& write_symbols
!= NO_DEBUG
)
539 warning (0, "%<-g%> is only supported when using GAS on this processor,");
540 warning (0, "%<-g%> option disabled");
541 write_symbols
= NO_DEBUG
;
544 /* We only support the "big PIC" model now. And we always generate PIC
545 code when in 64bit mode. */
546 if (flag_pic
== 1 || TARGET_64BIT
)
549 /* Disable -freorder-blocks-and-partition as we don't support hot and
550 cold partitioning. */
551 if (flag_reorder_blocks_and_partition
)
553 inform (input_location
,
554 "%<-freorder-blocks-and-partition%> does not work "
555 "on this architecture");
556 flag_reorder_blocks_and_partition
= 0;
557 flag_reorder_blocks
= 1;
560 /* We can't guarantee that .dword is available for 32-bit targets. */
561 if (UNITS_PER_WORD
== 4)
562 targetm
.asm_out
.aligned_op
.di
= NULL
;
564 /* The unaligned ops are only available when using GAS. */
567 targetm
.asm_out
.unaligned_op
.hi
= NULL
;
568 targetm
.asm_out
.unaligned_op
.si
= NULL
;
569 targetm
.asm_out
.unaligned_op
.di
= NULL
;
572 init_machine_status
= pa_init_machine_status
;
577 PA_BUILTIN_COPYSIGNQ
,
580 PA_BUILTIN_HUGE_VALQ
,
584 static GTY(()) tree pa_builtins
[(int) PA_BUILTIN_max
];
587 pa_init_builtins (void)
589 #ifdef DONT_HAVE_FPUTC_UNLOCKED
591 tree decl
= builtin_decl_explicit (BUILT_IN_PUTC_UNLOCKED
);
592 set_builtin_decl (BUILT_IN_FPUTC_UNLOCKED
, decl
,
593 builtin_decl_implicit_p (BUILT_IN_PUTC_UNLOCKED
));
600 if ((decl
= builtin_decl_explicit (BUILT_IN_FINITE
)) != NULL_TREE
)
601 set_user_assembler_name (decl
, "_Isfinite");
602 if ((decl
= builtin_decl_explicit (BUILT_IN_FINITEF
)) != NULL_TREE
)
603 set_user_assembler_name (decl
, "_Isfinitef");
607 if (HPUX_LONG_DOUBLE_LIBRARY
)
611 /* Under HPUX, the __float128 type is a synonym for "long double". */
612 (*lang_hooks
.types
.register_builtin_type
) (long_double_type_node
,
615 /* TFmode support builtins. */
616 ftype
= build_function_type_list (long_double_type_node
,
617 long_double_type_node
,
619 decl
= add_builtin_function ("__builtin_fabsq", ftype
,
620 PA_BUILTIN_FABSQ
, BUILT_IN_MD
,
621 "_U_Qfabs", NULL_TREE
);
622 TREE_READONLY (decl
) = 1;
623 pa_builtins
[PA_BUILTIN_FABSQ
] = decl
;
625 ftype
= build_function_type_list (long_double_type_node
,
626 long_double_type_node
,
627 long_double_type_node
,
629 decl
= add_builtin_function ("__builtin_copysignq", ftype
,
630 PA_BUILTIN_COPYSIGNQ
, BUILT_IN_MD
,
631 "_U_Qfcopysign", NULL_TREE
);
632 TREE_READONLY (decl
) = 1;
633 pa_builtins
[PA_BUILTIN_COPYSIGNQ
] = decl
;
635 ftype
= build_function_type_list (long_double_type_node
, NULL_TREE
);
636 decl
= add_builtin_function ("__builtin_infq", ftype
,
637 PA_BUILTIN_INFQ
, BUILT_IN_MD
,
639 pa_builtins
[PA_BUILTIN_INFQ
] = decl
;
641 decl
= add_builtin_function ("__builtin_huge_valq", ftype
,
642 PA_BUILTIN_HUGE_VALQ
, BUILT_IN_MD
,
644 pa_builtins
[PA_BUILTIN_HUGE_VALQ
] = decl
;
649 pa_expand_builtin (tree exp
, rtx target
, rtx subtarget ATTRIBUTE_UNUSED
,
650 machine_mode mode ATTRIBUTE_UNUSED
,
651 int ignore ATTRIBUTE_UNUSED
)
653 tree fndecl
= TREE_OPERAND (CALL_EXPR_FN (exp
), 0);
654 unsigned int fcode
= DECL_MD_FUNCTION_CODE (fndecl
);
658 case PA_BUILTIN_FABSQ
:
659 case PA_BUILTIN_COPYSIGNQ
:
660 return expand_call (exp
, target
, ignore
);
662 case PA_BUILTIN_INFQ
:
663 case PA_BUILTIN_HUGE_VALQ
:
665 machine_mode target_mode
= TYPE_MODE (TREE_TYPE (exp
));
670 tmp
= const_double_from_real_value (inf
, target_mode
);
672 tmp
= validize_mem (force_const_mem (target_mode
, tmp
));
675 target
= gen_reg_rtx (target_mode
);
677 emit_move_insn (target
, tmp
);
688 /* Function to init struct machine_function.
689 This will be called, via a pointer variable,
690 from push_function_context. */
692 static struct machine_function
*
693 pa_init_machine_status (void)
695 return ggc_cleared_alloc
<machine_function
> ();
698 /* If FROM is a probable pointer register, mark TO as a probable
699 pointer register with the same pointer alignment as FROM. */
702 copy_reg_pointer (rtx to
, rtx from
)
704 if (REG_POINTER (from
))
705 mark_reg_pointer (to
, REGNO_POINTER_ALIGN (REGNO (from
)));
708 /* Return 1 if X contains a symbolic expression. We know these
709 expressions will have one of a few well defined forms, so
710 we need only check those forms. */
712 pa_symbolic_expression_p (rtx x
)
715 /* Strip off any HIGH. */
716 if (GET_CODE (x
) == HIGH
)
719 return symbolic_operand (x
, VOIDmode
);
722 /* Accept any constant that can be moved in one instruction into a
725 pa_cint_ok_for_move (unsigned HOST_WIDE_INT ival
)
727 /* OK if ldo, ldil, or zdepi, can be used. */
728 return (VAL_14_BITS_P (ival
)
729 || pa_ldil_cint_p (ival
)
730 || pa_zdepi_cint_p (ival
));
733 /* True iff ldil can be used to load this CONST_INT. The least
734 significant 11 bits of the value must be zero and the value must
735 not change sign when extended from 32 to 64 bits. */
737 pa_ldil_cint_p (unsigned HOST_WIDE_INT ival
)
739 unsigned HOST_WIDE_INT x
;
741 x
= ival
& (((unsigned HOST_WIDE_INT
) -1 << 31) | 0x7ff);
742 return x
== 0 || x
== ((unsigned HOST_WIDE_INT
) -1 << 31);
745 /* True iff zdepi can be used to generate this CONST_INT.
746 zdepi first sign extends a 5-bit signed number to a given field
747 length, then places this field anywhere in a zero. */
749 pa_zdepi_cint_p (unsigned HOST_WIDE_INT x
)
751 unsigned HOST_WIDE_INT lsb_mask
, t
;
753 /* This might not be obvious, but it's at least fast.
754 This function is critical; we don't have the time loops would take. */
756 t
= ((x
>> 4) + lsb_mask
) & ~(lsb_mask
- 1);
757 /* Return true iff t is a power of two. */
758 return ((t
& (t
- 1)) == 0);
761 /* True iff depi or extru can be used to compute (reg & mask).
762 Accept bit pattern like these:
767 pa_and_mask_p (unsigned HOST_WIDE_INT mask
)
770 mask
+= mask
& -mask
;
771 return (mask
& (mask
- 1)) == 0;
774 /* True iff depi can be used to compute (reg | MASK). */
776 pa_ior_mask_p (unsigned HOST_WIDE_INT mask
)
778 mask
+= mask
& -mask
;
779 return (mask
& (mask
- 1)) == 0;
782 /* Legitimize PIC addresses. If the address is already
783 position-independent, we return ORIG. Newly generated
784 position-independent addresses go to REG. If we need more
785 than one register, we lose. */
788 legitimize_pic_address (rtx orig
, machine_mode mode
, rtx reg
)
792 gcc_assert (!PA_SYMBOL_REF_TLS_P (orig
));
794 /* Labels need special handling. */
795 if (pic_label_operand (orig
, mode
))
799 /* We do not want to go through the movXX expanders here since that
800 would create recursion.
802 Nor do we really want to call a generator for a named pattern
803 since that requires multiple patterns if we want to support
806 So instead we just emit the raw set, which avoids the movXX
807 expanders completely. */
808 mark_reg_pointer (reg
, BITS_PER_UNIT
);
809 insn
= emit_insn (gen_rtx_SET (reg
, orig
));
811 /* Put a REG_EQUAL note on this insn, so that it can be optimized. */
812 add_reg_note (insn
, REG_EQUAL
, orig
);
814 /* During and after reload, we need to generate a REG_LABEL_OPERAND note
815 and update LABEL_NUSES because this is not done automatically. */
816 if (reload_in_progress
|| reload_completed
)
818 /* Extract LABEL_REF. */
819 if (GET_CODE (orig
) == CONST
)
820 orig
= XEXP (XEXP (orig
, 0), 0);
821 /* Extract CODE_LABEL. */
822 orig
= XEXP (orig
, 0);
823 add_reg_note (insn
, REG_LABEL_OPERAND
, orig
);
824 /* Make sure we have label and not a note. */
826 LABEL_NUSES (orig
)++;
828 crtl
->uses_pic_offset_table
= 1;
831 if (GET_CODE (orig
) == SYMBOL_REF
)
838 /* Before reload, allocate a temporary register for the intermediate
839 result. This allows the sequence to be deleted when the final
840 result is unused and the insns are trivially dead. */
841 tmp_reg
= ((reload_in_progress
|| reload_completed
)
842 ? reg
: gen_reg_rtx (Pmode
));
844 if (function_label_operand (orig
, VOIDmode
))
846 /* Force function label into memory in word mode. */
847 orig
= XEXP (force_const_mem (word_mode
, orig
), 0);
848 /* Load plabel address from DLT. */
849 emit_move_insn (tmp_reg
,
850 gen_rtx_PLUS (word_mode
, pic_offset_table_rtx
,
851 gen_rtx_HIGH (word_mode
, orig
)));
853 = gen_const_mem (Pmode
,
854 gen_rtx_LO_SUM (Pmode
, tmp_reg
,
855 gen_rtx_UNSPEC (Pmode
,
858 emit_move_insn (reg
, pic_ref
);
859 /* Now load address of function descriptor. */
860 pic_ref
= gen_rtx_MEM (Pmode
, reg
);
864 /* Load symbol reference from DLT. */
865 emit_move_insn (tmp_reg
,
866 gen_rtx_PLUS (word_mode
, pic_offset_table_rtx
,
867 gen_rtx_HIGH (word_mode
, orig
)));
869 = gen_const_mem (Pmode
,
870 gen_rtx_LO_SUM (Pmode
, tmp_reg
,
871 gen_rtx_UNSPEC (Pmode
,
876 crtl
->uses_pic_offset_table
= 1;
877 mark_reg_pointer (reg
, BITS_PER_UNIT
);
878 insn
= emit_move_insn (reg
, pic_ref
);
880 /* Put a REG_EQUAL note on this insn, so that it can be optimized. */
881 set_unique_reg_note (insn
, REG_EQUAL
, orig
);
885 else if (GET_CODE (orig
) == CONST
)
889 if (GET_CODE (XEXP (orig
, 0)) == PLUS
890 && XEXP (XEXP (orig
, 0), 0) == pic_offset_table_rtx
)
894 gcc_assert (GET_CODE (XEXP (orig
, 0)) == PLUS
);
896 base
= legitimize_pic_address (XEXP (XEXP (orig
, 0), 0), Pmode
, reg
);
897 orig
= legitimize_pic_address (XEXP (XEXP (orig
, 0), 1), Pmode
,
898 base
== reg
? 0 : reg
);
900 if (GET_CODE (orig
) == CONST_INT
)
902 if (INT_14_BITS (orig
))
903 return plus_constant (Pmode
, base
, INTVAL (orig
));
904 orig
= force_reg (Pmode
, orig
);
906 pic_ref
= gen_rtx_PLUS (Pmode
, base
, orig
);
907 /* Likewise, should we set special REG_NOTEs here? */
913 static GTY(()) rtx gen_tls_tga
;
916 gen_tls_get_addr (void)
919 gen_tls_tga
= init_one_libfunc ("__tls_get_addr");
924 hppa_tls_call (rtx arg
)
928 ret
= gen_reg_rtx (Pmode
);
929 emit_library_call_value (gen_tls_get_addr (), ret
,
930 LCT_CONST
, Pmode
, arg
, Pmode
);
936 legitimize_tls_address (rtx addr
)
938 rtx ret
, tmp
, t1
, t2
, tp
;
941 /* Currently, we can't handle anything but a SYMBOL_REF. */
942 if (GET_CODE (addr
) != SYMBOL_REF
)
945 switch (SYMBOL_REF_TLS_MODEL (addr
))
947 case TLS_MODEL_GLOBAL_DYNAMIC
:
948 tmp
= gen_reg_rtx (Pmode
);
950 emit_insn (gen_tgd_load_pic (tmp
, addr
));
952 emit_insn (gen_tgd_load (tmp
, addr
));
953 ret
= hppa_tls_call (tmp
);
956 case TLS_MODEL_LOCAL_DYNAMIC
:
957 ret
= gen_reg_rtx (Pmode
);
958 tmp
= gen_reg_rtx (Pmode
);
961 emit_insn (gen_tld_load_pic (tmp
, addr
));
963 emit_insn (gen_tld_load (tmp
, addr
));
964 t1
= hppa_tls_call (tmp
);
967 t2
= gen_reg_rtx (Pmode
);
968 emit_libcall_block (insn
, t2
, t1
,
969 gen_rtx_UNSPEC (Pmode
, gen_rtvec (1, const0_rtx
),
971 emit_insn (gen_tld_offset_load (ret
, addr
, t2
));
974 case TLS_MODEL_INITIAL_EXEC
:
975 tp
= gen_reg_rtx (Pmode
);
976 tmp
= gen_reg_rtx (Pmode
);
977 ret
= gen_reg_rtx (Pmode
);
978 emit_insn (gen_tp_load (tp
));
980 emit_insn (gen_tie_load_pic (tmp
, addr
));
982 emit_insn (gen_tie_load (tmp
, addr
));
983 emit_move_insn (ret
, gen_rtx_PLUS (Pmode
, tp
, tmp
));
986 case TLS_MODEL_LOCAL_EXEC
:
987 tp
= gen_reg_rtx (Pmode
);
988 ret
= gen_reg_rtx (Pmode
);
989 emit_insn (gen_tp_load (tp
));
990 emit_insn (gen_tle_load (ret
, addr
, tp
));
1000 /* Helper for hppa_legitimize_address. Given X, return true if it
1001 is a left shift by 1, 2 or 3 positions or a multiply by 2, 4 or 8.
1003 This respectively represent canonical shift-add rtxs or scaled
1004 memory addresses. */
1006 mem_shadd_or_shadd_rtx_p (rtx x
)
1008 return ((GET_CODE (x
) == ASHIFT
1009 || GET_CODE (x
) == MULT
)
1010 && GET_CODE (XEXP (x
, 1)) == CONST_INT
1011 && ((GET_CODE (x
) == ASHIFT
1012 && pa_shadd_constant_p (INTVAL (XEXP (x
, 1))))
1013 || (GET_CODE (x
) == MULT
1014 && pa_mem_shadd_constant_p (INTVAL (XEXP (x
, 1))))));
1017 /* Try machine-dependent ways of modifying an illegitimate address
1018 to be legitimate. If we find one, return the new, valid address.
1019 This macro is used in only one place: `memory_address' in explow.c.
1021 OLDX is the address as it was before break_out_memory_refs was called.
1022 In some cases it is useful to look at this to decide what needs to be done.
1024 It is always safe for this macro to do nothing. It exists to recognize
1025 opportunities to optimize the output.
1027 For the PA, transform:
1029 memory(X + <large int>)
1033 if (<large int> & mask) >= 16
1034 Y = (<large int> & ~mask) + mask + 1 Round up.
1036 Y = (<large int> & ~mask) Round down.
1038 memory (Z + (<large int> - Y));
1040 This is for CSE to find several similar references, and only use one Z.
1042 X can either be a SYMBOL_REF or REG, but because combine cannot
1043 perform a 4->2 combination we do nothing for SYMBOL_REF + D where
1044 D will not fit in 14 bits.
1046 MODE_FLOAT references allow displacements which fit in 5 bits, so use
1049 MODE_INT references allow displacements which fit in 14 bits, so use
1052 This relies on the fact that most mode MODE_FLOAT references will use FP
1053 registers and most mode MODE_INT references will use integer registers.
1054 (In the rare case of an FP register used in an integer MODE, we depend
1055 on secondary reloads to clean things up.)
1058 It is also beneficial to handle (plus (mult (X) (Y)) (Z)) in a special
1059 manner if Y is 2, 4, or 8. (allows more shadd insns and shifted indexed
1060 addressing modes to be used).
1062 Note that the addresses passed into hppa_legitimize_address always
1063 come from a MEM, so we only have to match the MULT form on incoming
1064 addresses. But to be future proof we also match the ASHIFT form.
1066 However, this routine always places those shift-add sequences into
1067 registers, so we have to generate the ASHIFT form as our output.
1069 Put X and Z into registers. Then put the entire expression into
1073 hppa_legitimize_address (rtx x
, rtx oldx ATTRIBUTE_UNUSED
,
1078 /* We need to canonicalize the order of operands in unscaled indexed
1079 addresses since the code that checks if an address is valid doesn't
1080 always try both orders. */
1081 if (!TARGET_NO_SPACE_REGS
1082 && GET_CODE (x
) == PLUS
1083 && GET_MODE (x
) == Pmode
1084 && REG_P (XEXP (x
, 0))
1085 && REG_P (XEXP (x
, 1))
1086 && REG_POINTER (XEXP (x
, 0))
1087 && !REG_POINTER (XEXP (x
, 1)))
1088 return gen_rtx_PLUS (Pmode
, XEXP (x
, 1), XEXP (x
, 0));
1090 if (tls_referenced_p (x
))
1091 return legitimize_tls_address (x
);
1093 return legitimize_pic_address (x
, mode
, gen_reg_rtx (Pmode
));
1095 /* Strip off CONST. */
1096 if (GET_CODE (x
) == CONST
)
1099 /* Special case. Get the SYMBOL_REF into a register and use indexing.
1100 That should always be safe. */
1101 if (GET_CODE (x
) == PLUS
1102 && GET_CODE (XEXP (x
, 0)) == REG
1103 && GET_CODE (XEXP (x
, 1)) == SYMBOL_REF
)
1105 rtx reg
= force_reg (Pmode
, XEXP (x
, 1));
1106 return force_reg (Pmode
, gen_rtx_PLUS (Pmode
, reg
, XEXP (x
, 0)));
1109 /* Note we must reject symbols which represent function addresses
1110 since the assembler/linker can't handle arithmetic on plabels. */
1111 if (GET_CODE (x
) == PLUS
1112 && GET_CODE (XEXP (x
, 1)) == CONST_INT
1113 && ((GET_CODE (XEXP (x
, 0)) == SYMBOL_REF
1114 && !FUNCTION_NAME_P (XSTR (XEXP (x
, 0), 0)))
1115 || GET_CODE (XEXP (x
, 0)) == REG
))
1117 rtx int_part
, ptr_reg
;
1119 int offset
= INTVAL (XEXP (x
, 1));
1122 mask
= (GET_MODE_CLASS (mode
) == MODE_FLOAT
1123 && !INT14_OK_STRICT
? 0x1f : 0x3fff);
1125 /* Choose which way to round the offset. Round up if we
1126 are >= halfway to the next boundary. */
1127 if ((offset
& mask
) >= ((mask
+ 1) / 2))
1128 newoffset
= (offset
& ~ mask
) + mask
+ 1;
1130 newoffset
= (offset
& ~ mask
);
1132 /* If the newoffset will not fit in 14 bits (ldo), then
1133 handling this would take 4 or 5 instructions (2 to load
1134 the SYMBOL_REF + 1 or 2 to load the newoffset + 1 to
1135 add the new offset and the SYMBOL_REF.) Combine cannot
1136 handle 4->2 or 5->2 combinations, so do not create
1138 if (! VAL_14_BITS_P (newoffset
)
1139 && GET_CODE (XEXP (x
, 0)) == SYMBOL_REF
)
1141 rtx const_part
= plus_constant (Pmode
, XEXP (x
, 0), newoffset
);
1144 gen_rtx_HIGH (Pmode
, const_part
));
1147 gen_rtx_LO_SUM (Pmode
,
1148 tmp_reg
, const_part
));
1152 if (! VAL_14_BITS_P (newoffset
))
1153 int_part
= force_reg (Pmode
, GEN_INT (newoffset
));
1155 int_part
= GEN_INT (newoffset
);
1157 ptr_reg
= force_reg (Pmode
,
1158 gen_rtx_PLUS (Pmode
,
1159 force_reg (Pmode
, XEXP (x
, 0)),
1162 return plus_constant (Pmode
, ptr_reg
, offset
- newoffset
);
1165 /* Handle (plus (mult (a) (mem_shadd_constant)) (b)). */
1167 if (GET_CODE (x
) == PLUS
1168 && mem_shadd_or_shadd_rtx_p (XEXP (x
, 0))
1169 && (OBJECT_P (XEXP (x
, 1))
1170 || GET_CODE (XEXP (x
, 1)) == SUBREG
)
1171 && GET_CODE (XEXP (x
, 1)) != CONST
)
1173 /* If we were given a MULT, we must fix the constant
1174 as we're going to create the ASHIFT form. */
1175 int shift_val
= INTVAL (XEXP (XEXP (x
, 0), 1));
1176 if (GET_CODE (XEXP (x
, 0)) == MULT
)
1177 shift_val
= exact_log2 (shift_val
);
1181 if (GET_CODE (reg1
) != REG
)
1182 reg1
= force_reg (Pmode
, force_operand (reg1
, 0));
1184 reg2
= XEXP (XEXP (x
, 0), 0);
1185 if (GET_CODE (reg2
) != REG
)
1186 reg2
= force_reg (Pmode
, force_operand (reg2
, 0));
1188 return force_reg (Pmode
,
1189 gen_rtx_PLUS (Pmode
,
1190 gen_rtx_ASHIFT (Pmode
, reg2
,
1191 GEN_INT (shift_val
)),
1195 /* Similarly for (plus (plus (mult (a) (mem_shadd_constant)) (b)) (c)).
1197 Only do so for floating point modes since this is more speculative
1198 and we lose if it's an integer store. */
1199 if (GET_CODE (x
) == PLUS
1200 && GET_CODE (XEXP (x
, 0)) == PLUS
1201 && mem_shadd_or_shadd_rtx_p (XEXP (XEXP (x
, 0), 0))
1202 && (mode
== SFmode
|| mode
== DFmode
))
1204 int shift_val
= INTVAL (XEXP (XEXP (XEXP (x
, 0), 0), 1));
1206 /* If we were given a MULT, we must fix the constant
1207 as we're going to create the ASHIFT form. */
1208 if (GET_CODE (XEXP (XEXP (x
, 0), 0)) == MULT
)
1209 shift_val
= exact_log2 (shift_val
);
1211 /* Try and figure out what to use as a base register. */
1212 rtx reg1
, reg2
, base
, idx
;
1214 reg1
= XEXP (XEXP (x
, 0), 1);
1219 /* Make sure they're both regs. If one was a SYMBOL_REF [+ const],
1220 then pa_emit_move_sequence will turn on REG_POINTER so we'll know
1221 it's a base register below. */
1222 if (GET_CODE (reg1
) != REG
)
1223 reg1
= force_reg (Pmode
, force_operand (reg1
, 0));
1225 if (GET_CODE (reg2
) != REG
)
1226 reg2
= force_reg (Pmode
, force_operand (reg2
, 0));
1228 /* Figure out what the base and index are. */
1230 if (GET_CODE (reg1
) == REG
1231 && REG_POINTER (reg1
))
1234 idx
= gen_rtx_PLUS (Pmode
,
1235 gen_rtx_ASHIFT (Pmode
,
1236 XEXP (XEXP (XEXP (x
, 0), 0), 0),
1237 GEN_INT (shift_val
)),
1240 else if (GET_CODE (reg2
) == REG
1241 && REG_POINTER (reg2
))
1250 /* If the index adds a large constant, try to scale the
1251 constant so that it can be loaded with only one insn. */
1252 if (GET_CODE (XEXP (idx
, 1)) == CONST_INT
1253 && VAL_14_BITS_P (INTVAL (XEXP (idx
, 1))
1254 / INTVAL (XEXP (XEXP (idx
, 0), 1)))
1255 && INTVAL (XEXP (idx
, 1)) % INTVAL (XEXP (XEXP (idx
, 0), 1)) == 0)
1257 /* Divide the CONST_INT by the scale factor, then add it to A. */
1258 int val
= INTVAL (XEXP (idx
, 1));
1259 val
/= (1 << shift_val
);
1261 reg1
= XEXP (XEXP (idx
, 0), 0);
1262 if (GET_CODE (reg1
) != REG
)
1263 reg1
= force_reg (Pmode
, force_operand (reg1
, 0));
1265 reg1
= force_reg (Pmode
, gen_rtx_PLUS (Pmode
, reg1
, GEN_INT (val
)));
1267 /* We can now generate a simple scaled indexed address. */
1270 (Pmode
, gen_rtx_PLUS (Pmode
,
1271 gen_rtx_ASHIFT (Pmode
, reg1
,
1272 GEN_INT (shift_val
)),
1276 /* If B + C is still a valid base register, then add them. */
1277 if (GET_CODE (XEXP (idx
, 1)) == CONST_INT
1278 && INTVAL (XEXP (idx
, 1)) <= 4096
1279 && INTVAL (XEXP (idx
, 1)) >= -4096)
1283 reg1
= force_reg (Pmode
, gen_rtx_PLUS (Pmode
, base
, XEXP (idx
, 1)));
1285 reg2
= XEXP (XEXP (idx
, 0), 0);
1286 if (GET_CODE (reg2
) != CONST_INT
)
1287 reg2
= force_reg (Pmode
, force_operand (reg2
, 0));
1289 return force_reg (Pmode
,
1290 gen_rtx_PLUS (Pmode
,
1291 gen_rtx_ASHIFT (Pmode
, reg2
,
1292 GEN_INT (shift_val
)),
1296 /* Get the index into a register, then add the base + index and
1297 return a register holding the result. */
1299 /* First get A into a register. */
1300 reg1
= XEXP (XEXP (idx
, 0), 0);
1301 if (GET_CODE (reg1
) != REG
)
1302 reg1
= force_reg (Pmode
, force_operand (reg1
, 0));
1304 /* And get B into a register. */
1305 reg2
= XEXP (idx
, 1);
1306 if (GET_CODE (reg2
) != REG
)
1307 reg2
= force_reg (Pmode
, force_operand (reg2
, 0));
1309 reg1
= force_reg (Pmode
,
1310 gen_rtx_PLUS (Pmode
,
1311 gen_rtx_ASHIFT (Pmode
, reg1
,
1312 GEN_INT (shift_val
)),
1315 /* Add the result to our base register and return. */
1316 return force_reg (Pmode
, gen_rtx_PLUS (Pmode
, base
, reg1
));
1320 /* Uh-oh. We might have an address for x[n-100000]. This needs
1321 special handling to avoid creating an indexed memory address
1322 with x-100000 as the base.
1324 If the constant part is small enough, then it's still safe because
1325 there is a guard page at the beginning and end of the data segment.
1327 Scaled references are common enough that we want to try and rearrange the
1328 terms so that we can use indexing for these addresses too. Only
1329 do the optimization for floatint point modes. */
1331 if (GET_CODE (x
) == PLUS
1332 && pa_symbolic_expression_p (XEXP (x
, 1)))
1334 /* Ugly. We modify things here so that the address offset specified
1335 by the index expression is computed first, then added to x to form
1336 the entire address. */
1338 rtx regx1
, regx2
, regy1
, regy2
, y
;
1340 /* Strip off any CONST. */
1342 if (GET_CODE (y
) == CONST
)
1345 if (GET_CODE (y
) == PLUS
|| GET_CODE (y
) == MINUS
)
1347 /* See if this looks like
1348 (plus (mult (reg) (mem_shadd_const))
1349 (const (plus (symbol_ref) (const_int))))
1351 Where const_int is small. In that case the const
1352 expression is a valid pointer for indexing.
1354 If const_int is big, but can be divided evenly by shadd_const
1355 and added to (reg). This allows more scaled indexed addresses. */
1356 if (GET_CODE (XEXP (y
, 0)) == SYMBOL_REF
1357 && mem_shadd_or_shadd_rtx_p (XEXP (x
, 0))
1358 && GET_CODE (XEXP (y
, 1)) == CONST_INT
1359 && INTVAL (XEXP (y
, 1)) >= -4096
1360 && INTVAL (XEXP (y
, 1)) <= 4095)
1362 int shift_val
= INTVAL (XEXP (XEXP (x
, 0), 1));
1364 /* If we were given a MULT, we must fix the constant
1365 as we're going to create the ASHIFT form. */
1366 if (GET_CODE (XEXP (x
, 0)) == MULT
)
1367 shift_val
= exact_log2 (shift_val
);
1372 if (GET_CODE (reg1
) != REG
)
1373 reg1
= force_reg (Pmode
, force_operand (reg1
, 0));
1375 reg2
= XEXP (XEXP (x
, 0), 0);
1376 if (GET_CODE (reg2
) != REG
)
1377 reg2
= force_reg (Pmode
, force_operand (reg2
, 0));
1381 gen_rtx_PLUS (Pmode
,
1382 gen_rtx_ASHIFT (Pmode
,
1384 GEN_INT (shift_val
)),
1387 else if ((mode
== DFmode
|| mode
== SFmode
)
1388 && GET_CODE (XEXP (y
, 0)) == SYMBOL_REF
1389 && mem_shadd_or_shadd_rtx_p (XEXP (x
, 0))
1390 && GET_CODE (XEXP (y
, 1)) == CONST_INT
1391 && INTVAL (XEXP (y
, 1)) % (1 << INTVAL (XEXP (XEXP (x
, 0), 1))) == 0)
1393 int shift_val
= INTVAL (XEXP (XEXP (x
, 0), 1));
1395 /* If we were given a MULT, we must fix the constant
1396 as we're going to create the ASHIFT form. */
1397 if (GET_CODE (XEXP (x
, 0)) == MULT
)
1398 shift_val
= exact_log2 (shift_val
);
1401 = force_reg (Pmode
, GEN_INT (INTVAL (XEXP (y
, 1))
1402 / INTVAL (XEXP (XEXP (x
, 0), 1))));
1403 regx2
= XEXP (XEXP (x
, 0), 0);
1404 if (GET_CODE (regx2
) != REG
)
1405 regx2
= force_reg (Pmode
, force_operand (regx2
, 0));
1406 regx2
= force_reg (Pmode
, gen_rtx_fmt_ee (GET_CODE (y
), Pmode
,
1410 gen_rtx_PLUS (Pmode
,
1411 gen_rtx_ASHIFT (Pmode
, regx2
,
1412 GEN_INT (shift_val
)),
1413 force_reg (Pmode
, XEXP (y
, 0))));
1415 else if (GET_CODE (XEXP (y
, 1)) == CONST_INT
1416 && INTVAL (XEXP (y
, 1)) >= -4096
1417 && INTVAL (XEXP (y
, 1)) <= 4095)
1419 /* This is safe because of the guard page at the
1420 beginning and end of the data space. Just
1421 return the original address. */
1426 /* Doesn't look like one we can optimize. */
1427 regx1
= force_reg (Pmode
, force_operand (XEXP (x
, 0), 0));
1428 regy1
= force_reg (Pmode
, force_operand (XEXP (y
, 0), 0));
1429 regy2
= force_reg (Pmode
, force_operand (XEXP (y
, 1), 0));
1430 regx1
= force_reg (Pmode
,
1431 gen_rtx_fmt_ee (GET_CODE (y
), Pmode
,
1433 return force_reg (Pmode
, gen_rtx_PLUS (Pmode
, regx1
, regy1
));
1441 /* Implement the TARGET_REGISTER_MOVE_COST hook.
1443 Compute extra cost of moving data between one register class
1446 Make moves from SAR so expensive they should never happen. We used to
1447 have 0xffff here, but that generates overflow in rare cases.
1449 Copies involving a FP register and a non-FP register are relatively
1450 expensive because they must go through memory.
1452 Other copies are reasonably cheap. */
1455 hppa_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1456 reg_class_t from
, reg_class_t to
)
1458 if (from
== SHIFT_REGS
)
1460 else if (to
== SHIFT_REGS
&& FP_REG_CLASS_P (from
))
1462 else if ((FP_REG_CLASS_P (from
) && ! FP_REG_CLASS_P (to
))
1463 || (FP_REG_CLASS_P (to
) && ! FP_REG_CLASS_P (from
)))
1469 /* For the HPPA, REG and REG+CONST is cost 0
1470 and addresses involving symbolic constants are cost 2.
1472 PIC addresses are very expensive.
1474 It is no coincidence that this has the same structure
1475 as pa_legitimate_address_p. */
1478 hppa_address_cost (rtx X
, machine_mode mode ATTRIBUTE_UNUSED
,
1479 addr_space_t as ATTRIBUTE_UNUSED
,
1480 bool speed ATTRIBUTE_UNUSED
)
1482 switch (GET_CODE (X
))
1495 /* Compute a (partial) cost for rtx X. Return true if the complete
1496 cost has been computed, and false if subexpressions should be
1497 scanned. In either case, *TOTAL contains the cost result. */
1500 hppa_rtx_costs (rtx x
, machine_mode mode
, int outer_code
,
1501 int opno ATTRIBUTE_UNUSED
,
1502 int *total
, bool speed ATTRIBUTE_UNUSED
)
1505 int code
= GET_CODE (x
);
1510 if (INTVAL (x
) == 0)
1512 else if (INT_14_BITS (x
))
1529 if ((x
== CONST0_RTX (DFmode
) || x
== CONST0_RTX (SFmode
))
1530 && outer_code
!= SET
)
1537 if (GET_MODE_CLASS (mode
) == MODE_FLOAT
)
1539 *total
= COSTS_N_INSNS (3);
1543 /* A mode size N times larger than SImode needs O(N*N) more insns. */
1544 factor
= GET_MODE_SIZE (mode
) / 4;
1548 if (TARGET_PA_11
&& !TARGET_DISABLE_FPREGS
&& !TARGET_SOFT_FLOAT
)
1549 *total
= factor
* factor
* COSTS_N_INSNS (8);
1551 *total
= factor
* factor
* COSTS_N_INSNS (20);
1555 if (GET_MODE_CLASS (mode
) == MODE_FLOAT
)
1557 *total
= COSTS_N_INSNS (14);
1565 /* A mode size N times larger than SImode needs O(N*N) more insns. */
1566 factor
= GET_MODE_SIZE (mode
) / 4;
1570 *total
= factor
* factor
* COSTS_N_INSNS (60);
1573 case PLUS
: /* this includes shNadd insns */
1575 if (GET_MODE_CLASS (mode
) == MODE_FLOAT
)
1577 *total
= COSTS_N_INSNS (3);
1581 /* A size N times larger than UNITS_PER_WORD needs N times as
1582 many insns, taking N times as long. */
1583 factor
= GET_MODE_SIZE (mode
) / UNITS_PER_WORD
;
1586 *total
= factor
* COSTS_N_INSNS (1);
1592 *total
= COSTS_N_INSNS (1);
1600 /* Ensure mode of ORIG, a REG rtx, is MODE. Returns either ORIG or a
1601 new rtx with the correct mode. */
1603 force_mode (machine_mode mode
, rtx orig
)
1605 if (mode
== GET_MODE (orig
))
1608 gcc_assert (REGNO (orig
) < FIRST_PSEUDO_REGISTER
);
1610 return gen_rtx_REG (mode
, REGNO (orig
));
1613 /* Implement TARGET_CANNOT_FORCE_CONST_MEM. */
1616 pa_cannot_force_const_mem (machine_mode mode ATTRIBUTE_UNUSED
, rtx x
)
1618 return tls_referenced_p (x
);
1621 /* Emit insns to move operands[1] into operands[0].
1623 Return 1 if we have written out everything that needs to be done to
1624 do the move. Otherwise, return 0 and the caller will emit the move
1627 Note SCRATCH_REG may not be in the proper mode depending on how it
1628 will be used. This routine is responsible for creating a new copy
1629 of SCRATCH_REG in the proper mode. */
1632 pa_emit_move_sequence (rtx
*operands
, machine_mode mode
, rtx scratch_reg
)
1634 register rtx operand0
= operands
[0];
1635 register rtx operand1
= operands
[1];
1638 /* We can only handle indexed addresses in the destination operand
1639 of floating point stores. Thus, we need to break out indexed
1640 addresses from the destination operand. */
1641 if (GET_CODE (operand0
) == MEM
&& IS_INDEX_ADDR_P (XEXP (operand0
, 0)))
1643 gcc_assert (can_create_pseudo_p ());
1645 tem
= copy_to_mode_reg (Pmode
, XEXP (operand0
, 0));
1646 operand0
= replace_equiv_address (operand0
, tem
);
1649 /* On targets with non-equivalent space registers, break out unscaled
1650 indexed addresses from the source operand before the final CSE.
1651 We have to do this because the REG_POINTER flag is not correctly
1652 carried through various optimization passes and CSE may substitute
1653 a pseudo without the pointer set for one with the pointer set. As
1654 a result, we loose various opportunities to create insns with
1655 unscaled indexed addresses. */
1656 if (!TARGET_NO_SPACE_REGS
1657 && !cse_not_expected
1658 && GET_CODE (operand1
) == MEM
1659 && GET_CODE (XEXP (operand1
, 0)) == PLUS
1660 && REG_P (XEXP (XEXP (operand1
, 0), 0))
1661 && REG_P (XEXP (XEXP (operand1
, 0), 1)))
1663 = replace_equiv_address (operand1
,
1664 copy_to_mode_reg (Pmode
, XEXP (operand1
, 0)));
1667 && reload_in_progress
&& GET_CODE (operand0
) == REG
1668 && REGNO (operand0
) >= FIRST_PSEUDO_REGISTER
)
1669 operand0
= reg_equiv_mem (REGNO (operand0
));
1670 else if (scratch_reg
1671 && reload_in_progress
&& GET_CODE (operand0
) == SUBREG
1672 && GET_CODE (SUBREG_REG (operand0
)) == REG
1673 && REGNO (SUBREG_REG (operand0
)) >= FIRST_PSEUDO_REGISTER
)
1675 /* We must not alter SUBREG_BYTE (operand0) since that would confuse
1676 the code which tracks sets/uses for delete_output_reload. */
1677 rtx temp
= gen_rtx_SUBREG (GET_MODE (operand0
),
1678 reg_equiv_mem (REGNO (SUBREG_REG (operand0
))),
1679 SUBREG_BYTE (operand0
));
1680 operand0
= alter_subreg (&temp
, true);
1684 && reload_in_progress
&& GET_CODE (operand1
) == REG
1685 && REGNO (operand1
) >= FIRST_PSEUDO_REGISTER
)
1686 operand1
= reg_equiv_mem (REGNO (operand1
));
1687 else if (scratch_reg
1688 && reload_in_progress
&& GET_CODE (operand1
) == SUBREG
1689 && GET_CODE (SUBREG_REG (operand1
)) == REG
1690 && REGNO (SUBREG_REG (operand1
)) >= FIRST_PSEUDO_REGISTER
)
1692 /* We must not alter SUBREG_BYTE (operand0) since that would confuse
1693 the code which tracks sets/uses for delete_output_reload. */
1694 rtx temp
= gen_rtx_SUBREG (GET_MODE (operand1
),
1695 reg_equiv_mem (REGNO (SUBREG_REG (operand1
))),
1696 SUBREG_BYTE (operand1
));
1697 operand1
= alter_subreg (&temp
, true);
1700 if (scratch_reg
&& reload_in_progress
&& GET_CODE (operand0
) == MEM
1701 && ((tem
= find_replacement (&XEXP (operand0
, 0)))
1702 != XEXP (operand0
, 0)))
1703 operand0
= replace_equiv_address (operand0
, tem
);
1705 if (scratch_reg
&& reload_in_progress
&& GET_CODE (operand1
) == MEM
1706 && ((tem
= find_replacement (&XEXP (operand1
, 0)))
1707 != XEXP (operand1
, 0)))
1708 operand1
= replace_equiv_address (operand1
, tem
);
1710 /* Handle secondary reloads for loads/stores of FP registers from
1711 REG+D addresses where D does not fit in 5 or 14 bits, including
1712 (subreg (mem (addr))) cases, and reloads for other unsupported
1715 && FP_REG_P (operand0
)
1716 && (MEM_P (operand1
)
1717 || (GET_CODE (operand1
) == SUBREG
1718 && MEM_P (XEXP (operand1
, 0)))))
1722 if (GET_CODE (op1
) == SUBREG
)
1723 op1
= XEXP (op1
, 0);
1725 if (reg_plus_base_memory_operand (op1
, GET_MODE (op1
)))
1729 && INT_14_BITS (XEXP (XEXP (op1
, 0), 1)))
1730 && !INT_5_BITS (XEXP (XEXP (op1
, 0), 1)))
1732 /* SCRATCH_REG will hold an address and maybe the actual data.
1733 We want it in WORD_MODE regardless of what mode it was
1734 originally given to us. */
1735 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1737 /* D might not fit in 14 bits either; for such cases load D
1738 into scratch reg. */
1739 if (!INT_14_BITS (XEXP (XEXP (op1
, 0), 1)))
1741 emit_move_insn (scratch_reg
, XEXP (XEXP (op1
, 0), 1));
1742 emit_move_insn (scratch_reg
,
1743 gen_rtx_fmt_ee (GET_CODE (XEXP (op1
, 0)),
1745 XEXP (XEXP (op1
, 0), 0),
1749 emit_move_insn (scratch_reg
, XEXP (op1
, 0));
1750 op1
= replace_equiv_address (op1
, scratch_reg
);
1753 else if ((!INT14_OK_STRICT
&& symbolic_memory_operand (op1
, VOIDmode
))
1754 || IS_LO_SUM_DLT_ADDR_P (XEXP (op1
, 0))
1755 || IS_INDEX_ADDR_P (XEXP (op1
, 0)))
1757 /* Load memory address into SCRATCH_REG. */
1758 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1759 emit_move_insn (scratch_reg
, XEXP (op1
, 0));
1760 op1
= replace_equiv_address (op1
, scratch_reg
);
1762 emit_insn (gen_rtx_SET (operand0
, op1
));
1765 else if (scratch_reg
1766 && FP_REG_P (operand1
)
1767 && (MEM_P (operand0
)
1768 || (GET_CODE (operand0
) == SUBREG
1769 && MEM_P (XEXP (operand0
, 0)))))
1773 if (GET_CODE (op0
) == SUBREG
)
1774 op0
= XEXP (op0
, 0);
1776 if (reg_plus_base_memory_operand (op0
, GET_MODE (op0
)))
1780 && INT_14_BITS (XEXP (XEXP (op0
, 0), 1)))
1781 && !INT_5_BITS (XEXP (XEXP (op0
, 0), 1)))
1783 /* SCRATCH_REG will hold an address and maybe the actual data.
1784 We want it in WORD_MODE regardless of what mode it was
1785 originally given to us. */
1786 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1788 /* D might not fit in 14 bits either; for such cases load D
1789 into scratch reg. */
1790 if (!INT_14_BITS (XEXP (XEXP (op0
, 0), 1)))
1792 emit_move_insn (scratch_reg
, XEXP (XEXP (op0
, 0), 1));
1793 emit_move_insn (scratch_reg
,
1794 gen_rtx_fmt_ee (GET_CODE (XEXP (op0
, 0)),
1796 XEXP (XEXP (op0
, 0), 0),
1800 emit_move_insn (scratch_reg
, XEXP (op0
, 0));
1801 op0
= replace_equiv_address (op0
, scratch_reg
);
1804 else if ((!INT14_OK_STRICT
&& symbolic_memory_operand (op0
, VOIDmode
))
1805 || IS_LO_SUM_DLT_ADDR_P (XEXP (op0
, 0))
1806 || IS_INDEX_ADDR_P (XEXP (op0
, 0)))
1808 /* Load memory address into SCRATCH_REG. */
1809 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1810 emit_move_insn (scratch_reg
, XEXP (op0
, 0));
1811 op0
= replace_equiv_address (op0
, scratch_reg
);
1813 emit_insn (gen_rtx_SET (op0
, operand1
));
1816 /* Handle secondary reloads for loads of FP registers from constant
1817 expressions by forcing the constant into memory. For the most part,
1818 this is only necessary for SImode and DImode.
1820 Use scratch_reg to hold the address of the memory location. */
1821 else if (scratch_reg
1822 && CONSTANT_P (operand1
)
1823 && FP_REG_P (operand0
))
1825 rtx const_mem
, xoperands
[2];
1827 if (operand1
== CONST0_RTX (mode
))
1829 emit_insn (gen_rtx_SET (operand0
, operand1
));
1833 /* SCRATCH_REG will hold an address and maybe the actual data. We want
1834 it in WORD_MODE regardless of what mode it was originally given
1836 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1838 /* Force the constant into memory and put the address of the
1839 memory location into scratch_reg. */
1840 const_mem
= force_const_mem (mode
, operand1
);
1841 xoperands
[0] = scratch_reg
;
1842 xoperands
[1] = XEXP (const_mem
, 0);
1843 pa_emit_move_sequence (xoperands
, Pmode
, 0);
1845 /* Now load the destination register. */
1846 emit_insn (gen_rtx_SET (operand0
,
1847 replace_equiv_address (const_mem
, scratch_reg
)));
1850 /* Handle secondary reloads for SAR. These occur when trying to load
1851 the SAR from memory or a constant. */
1852 else if (scratch_reg
1853 && GET_CODE (operand0
) == REG
1854 && REGNO (operand0
) < FIRST_PSEUDO_REGISTER
1855 && REGNO_REG_CLASS (REGNO (operand0
)) == SHIFT_REGS
1856 && (GET_CODE (operand1
) == MEM
|| GET_CODE (operand1
) == CONST_INT
))
1858 /* D might not fit in 14 bits either; for such cases load D into
1860 if (GET_CODE (operand1
) == MEM
1861 && !memory_address_p (GET_MODE (operand0
), XEXP (operand1
, 0)))
1863 /* We are reloading the address into the scratch register, so we
1864 want to make sure the scratch register is a full register. */
1865 scratch_reg
= force_mode (word_mode
, scratch_reg
);
1867 emit_move_insn (scratch_reg
, XEXP (XEXP (operand1
, 0), 1));
1868 emit_move_insn (scratch_reg
, gen_rtx_fmt_ee (GET_CODE (XEXP (operand1
,
1871 XEXP (XEXP (operand1
, 0),
1875 /* Now we are going to load the scratch register from memory,
1876 we want to load it in the same width as the original MEM,
1877 which must be the same as the width of the ultimate destination,
1879 scratch_reg
= force_mode (GET_MODE (operand0
), scratch_reg
);
1881 emit_move_insn (scratch_reg
,
1882 replace_equiv_address (operand1
, scratch_reg
));
1886 /* We want to load the scratch register using the same mode as
1887 the ultimate destination. */
1888 scratch_reg
= force_mode (GET_MODE (operand0
), scratch_reg
);
1890 emit_move_insn (scratch_reg
, operand1
);
1893 /* And emit the insn to set the ultimate destination. We know that
1894 the scratch register has the same mode as the destination at this
1896 emit_move_insn (operand0
, scratch_reg
);
1900 /* Handle the most common case: storing into a register. */
1901 if (register_operand (operand0
, mode
))
1903 /* Legitimize TLS symbol references. This happens for references
1904 that aren't a legitimate constant. */
1905 if (PA_SYMBOL_REF_TLS_P (operand1
))
1906 operand1
= legitimize_tls_address (operand1
);
1908 if (register_operand (operand1
, mode
)
1909 || (GET_CODE (operand1
) == CONST_INT
1910 && pa_cint_ok_for_move (UINTVAL (operand1
)))
1911 || (operand1
== CONST0_RTX (mode
))
1912 || (GET_CODE (operand1
) == HIGH
1913 && !symbolic_operand (XEXP (operand1
, 0), VOIDmode
))
1914 /* Only `general_operands' can come here, so MEM is ok. */
1915 || GET_CODE (operand1
) == MEM
)
1917 /* Various sets are created during RTL generation which don't
1918 have the REG_POINTER flag correctly set. After the CSE pass,
1919 instruction recognition can fail if we don't consistently
1920 set this flag when performing register copies. This should
1921 also improve the opportunities for creating insns that use
1922 unscaled indexing. */
1923 if (REG_P (operand0
) && REG_P (operand1
))
1925 if (REG_POINTER (operand1
)
1926 && !REG_POINTER (operand0
)
1927 && !HARD_REGISTER_P (operand0
))
1928 copy_reg_pointer (operand0
, operand1
);
1931 /* When MEMs are broken out, the REG_POINTER flag doesn't
1932 get set. In some cases, we can set the REG_POINTER flag
1933 from the declaration for the MEM. */
1934 if (REG_P (operand0
)
1935 && GET_CODE (operand1
) == MEM
1936 && !REG_POINTER (operand0
))
1938 tree decl
= MEM_EXPR (operand1
);
1940 /* Set the register pointer flag and register alignment
1941 if the declaration for this memory reference is a
1947 /* If this is a COMPONENT_REF, use the FIELD_DECL from
1949 if (TREE_CODE (decl
) == COMPONENT_REF
)
1950 decl
= TREE_OPERAND (decl
, 1);
1952 type
= TREE_TYPE (decl
);
1953 type
= strip_array_types (type
);
1955 if (POINTER_TYPE_P (type
))
1956 mark_reg_pointer (operand0
, BITS_PER_UNIT
);
1960 emit_insn (gen_rtx_SET (operand0
, operand1
));
1964 else if (GET_CODE (operand0
) == MEM
)
1966 if (mode
== DFmode
&& operand1
== CONST0_RTX (mode
)
1967 && !(reload_in_progress
|| reload_completed
))
1969 rtx temp
= gen_reg_rtx (DFmode
);
1971 emit_insn (gen_rtx_SET (temp
, operand1
));
1972 emit_insn (gen_rtx_SET (operand0
, temp
));
1975 if (register_operand (operand1
, mode
) || operand1
== CONST0_RTX (mode
))
1977 /* Run this case quickly. */
1978 emit_insn (gen_rtx_SET (operand0
, operand1
));
1981 if (! (reload_in_progress
|| reload_completed
))
1983 operands
[0] = validize_mem (operand0
);
1984 operands
[1] = operand1
= force_reg (mode
, operand1
);
1988 /* Simplify the source if we need to.
1989 Note we do have to handle function labels here, even though we do
1990 not consider them legitimate constants. Loop optimizations can
1991 call the emit_move_xxx with one as a source. */
1992 if ((GET_CODE (operand1
) != HIGH
&& immediate_operand (operand1
, mode
))
1993 || (GET_CODE (operand1
) == HIGH
1994 && symbolic_operand (XEXP (operand1
, 0), mode
))
1995 || function_label_operand (operand1
, VOIDmode
)
1996 || tls_referenced_p (operand1
))
2000 if (GET_CODE (operand1
) == HIGH
)
2003 operand1
= XEXP (operand1
, 0);
2005 if (symbolic_operand (operand1
, mode
))
2007 /* Argh. The assembler and linker can't handle arithmetic
2010 So we force the plabel into memory, load operand0 from
2011 the memory location, then add in the constant part. */
2012 if ((GET_CODE (operand1
) == CONST
2013 && GET_CODE (XEXP (operand1
, 0)) == PLUS
2014 && function_label_operand (XEXP (XEXP (operand1
, 0), 0),
2016 || function_label_operand (operand1
, VOIDmode
))
2018 rtx temp
, const_part
;
2020 /* Figure out what (if any) scratch register to use. */
2021 if (reload_in_progress
|| reload_completed
)
2023 scratch_reg
= scratch_reg
? scratch_reg
: operand0
;
2024 /* SCRATCH_REG will hold an address and maybe the actual
2025 data. We want it in WORD_MODE regardless of what mode it
2026 was originally given to us. */
2027 scratch_reg
= force_mode (word_mode
, scratch_reg
);
2030 scratch_reg
= gen_reg_rtx (Pmode
);
2032 if (GET_CODE (operand1
) == CONST
)
2034 /* Save away the constant part of the expression. */
2035 const_part
= XEXP (XEXP (operand1
, 0), 1);
2036 gcc_assert (GET_CODE (const_part
) == CONST_INT
);
2038 /* Force the function label into memory. */
2039 temp
= force_const_mem (mode
, XEXP (XEXP (operand1
, 0), 0));
2043 /* No constant part. */
2044 const_part
= NULL_RTX
;
2046 /* Force the function label into memory. */
2047 temp
= force_const_mem (mode
, operand1
);
2051 /* Get the address of the memory location. PIC-ify it if
2053 temp
= XEXP (temp
, 0);
2055 temp
= legitimize_pic_address (temp
, mode
, scratch_reg
);
2057 /* Put the address of the memory location into our destination
2060 pa_emit_move_sequence (operands
, mode
, scratch_reg
);
2062 /* Now load from the memory location into our destination
2064 operands
[1] = gen_rtx_MEM (Pmode
, operands
[0]);
2065 pa_emit_move_sequence (operands
, mode
, scratch_reg
);
2067 /* And add back in the constant part. */
2068 if (const_part
!= NULL_RTX
)
2069 expand_inc (operand0
, const_part
);
2079 if (reload_in_progress
|| reload_completed
)
2081 temp
= scratch_reg
? scratch_reg
: operand0
;
2082 /* TEMP will hold an address and maybe the actual
2083 data. We want it in WORD_MODE regardless of what mode it
2084 was originally given to us. */
2085 temp
= force_mode (word_mode
, temp
);
2088 temp
= gen_reg_rtx (Pmode
);
2090 /* Force (const (plus (symbol) (const_int))) to memory
2091 if the const_int will not fit in 14 bits. Although
2092 this requires a relocation, the instruction sequence
2093 needed to load the value is shorter. */
2094 if (GET_CODE (operand1
) == CONST
2095 && GET_CODE (XEXP (operand1
, 0)) == PLUS
2096 && GET_CODE (XEXP (XEXP (operand1
, 0), 1)) == CONST_INT
2097 && !INT_14_BITS (XEXP (XEXP (operand1
, 0), 1)))
2099 rtx x
, m
= force_const_mem (mode
, operand1
);
2101 x
= legitimize_pic_address (XEXP (m
, 0), mode
, temp
);
2102 x
= replace_equiv_address (m
, x
);
2103 insn
= emit_move_insn (operand0
, x
);
2107 operands
[1] = legitimize_pic_address (operand1
, mode
, temp
);
2108 if (REG_P (operand0
) && REG_P (operands
[1]))
2109 copy_reg_pointer (operand0
, operands
[1]);
2110 insn
= emit_move_insn (operand0
, operands
[1]);
2113 /* Put a REG_EQUAL note on this insn. */
2114 set_unique_reg_note (insn
, REG_EQUAL
, operand1
);
2116 /* On the HPPA, references to data space are supposed to use dp,
2117 register 27, but showing it in the RTL inhibits various cse
2118 and loop optimizations. */
2123 if (reload_in_progress
|| reload_completed
)
2125 temp
= scratch_reg
? scratch_reg
: operand0
;
2126 /* TEMP will hold an address and maybe the actual
2127 data. We want it in WORD_MODE regardless of what mode it
2128 was originally given to us. */
2129 temp
= force_mode (word_mode
, temp
);
2132 temp
= gen_reg_rtx (mode
);
2134 /* Loading a SYMBOL_REF into a register makes that register
2135 safe to be used as the base in an indexed address.
2137 Don't mark hard registers though. That loses. */
2138 if (GET_CODE (operand0
) == REG
2139 && REGNO (operand0
) >= FIRST_PSEUDO_REGISTER
)
2140 mark_reg_pointer (operand0
, BITS_PER_UNIT
);
2141 if (REGNO (temp
) >= FIRST_PSEUDO_REGISTER
)
2142 mark_reg_pointer (temp
, BITS_PER_UNIT
);
2145 set
= gen_rtx_SET (operand0
, temp
);
2147 set
= gen_rtx_SET (operand0
,
2148 gen_rtx_LO_SUM (mode
, temp
, operand1
));
2150 emit_insn (gen_rtx_SET (temp
, gen_rtx_HIGH (mode
, operand1
)));
2156 else if (tls_referenced_p (operand1
))
2161 if (GET_CODE (tmp
) == CONST
&& GET_CODE (XEXP (tmp
, 0)) == PLUS
)
2163 addend
= XEXP (XEXP (tmp
, 0), 1);
2164 tmp
= XEXP (XEXP (tmp
, 0), 0);
2167 gcc_assert (GET_CODE (tmp
) == SYMBOL_REF
);
2168 tmp
= legitimize_tls_address (tmp
);
2171 tmp
= gen_rtx_PLUS (mode
, tmp
, addend
);
2172 tmp
= force_operand (tmp
, operands
[0]);
2176 else if (GET_CODE (operand1
) != CONST_INT
2177 || !pa_cint_ok_for_move (UINTVAL (operand1
)))
2182 HOST_WIDE_INT value
= 0;
2183 HOST_WIDE_INT insv
= 0;
2186 if (GET_CODE (operand1
) == CONST_INT
)
2187 value
= INTVAL (operand1
);
2190 && GET_CODE (operand1
) == CONST_INT
2191 && HOST_BITS_PER_WIDE_INT
> 32
2192 && GET_MODE_BITSIZE (GET_MODE (operand0
)) > 32)
2196 /* Extract the low order 32 bits of the value and sign extend.
2197 If the new value is the same as the original value, we can
2198 can use the original value as-is. If the new value is
2199 different, we use it and insert the most-significant 32-bits
2200 of the original value into the final result. */
2201 nval
= ((value
& (((HOST_WIDE_INT
) 2 << 31) - 1))
2202 ^ ((HOST_WIDE_INT
) 1 << 31)) - ((HOST_WIDE_INT
) 1 << 31);
2205 #if HOST_BITS_PER_WIDE_INT > 32
2206 insv
= value
>= 0 ? value
>> 32 : ~(~value
>> 32);
2210 operand1
= GEN_INT (nval
);
2214 if (reload_in_progress
|| reload_completed
)
2215 temp
= scratch_reg
? scratch_reg
: operand0
;
2217 temp
= gen_reg_rtx (mode
);
2219 /* We don't directly split DImode constants on 32-bit targets
2220 because PLUS uses an 11-bit immediate and the insn sequence
2221 generated is not as efficient as the one using HIGH/LO_SUM. */
2222 if (GET_CODE (operand1
) == CONST_INT
2223 && GET_MODE_BITSIZE (mode
) <= BITS_PER_WORD
2224 && GET_MODE_BITSIZE (mode
) <= HOST_BITS_PER_WIDE_INT
2227 /* Directly break constant into high and low parts. This
2228 provides better optimization opportunities because various
2229 passes recognize constants split with PLUS but not LO_SUM.
2230 We use a 14-bit signed low part except when the addition
2231 of 0x4000 to the high part might change the sign of the
2233 HOST_WIDE_INT low
= value
& 0x3fff;
2234 HOST_WIDE_INT high
= value
& ~ 0x3fff;
2238 if (high
== 0x7fffc000 || (mode
== HImode
&& high
== 0x4000))
2246 emit_insn (gen_rtx_SET (temp
, GEN_INT (high
)));
2247 operands
[1] = gen_rtx_PLUS (mode
, temp
, GEN_INT (low
));
2251 emit_insn (gen_rtx_SET (temp
, gen_rtx_HIGH (mode
, operand1
)));
2252 operands
[1] = gen_rtx_LO_SUM (mode
, temp
, operand1
);
2255 insn
= emit_move_insn (operands
[0], operands
[1]);
2257 /* Now insert the most significant 32 bits of the value
2258 into the register. When we don't have a second register
2259 available, it could take up to nine instructions to load
2260 a 64-bit integer constant. Prior to reload, we force
2261 constants that would take more than three instructions
2262 to load to the constant pool. During and after reload,
2263 we have to handle all possible values. */
2266 /* Use a HIGH/LO_SUM/INSV sequence if we have a second
2267 register and the value to be inserted is outside the
2268 range that can be loaded with three depdi instructions. */
2269 if (temp
!= operand0
&& (insv
>= 16384 || insv
< -16384))
2271 operand1
= GEN_INT (insv
);
2273 emit_insn (gen_rtx_SET (temp
,
2274 gen_rtx_HIGH (mode
, operand1
)));
2275 emit_move_insn (temp
, gen_rtx_LO_SUM (mode
, temp
, operand1
));
2277 insn
= emit_insn (gen_insvdi (operand0
, GEN_INT (32),
2280 insn
= emit_insn (gen_insvsi (operand0
, GEN_INT (32),
2285 int len
= 5, pos
= 27;
2287 /* Insert the bits using the depdi instruction. */
2290 HOST_WIDE_INT v5
= ((insv
& 31) ^ 16) - 16;
2291 HOST_WIDE_INT sign
= v5
< 0;
2293 /* Left extend the insertion. */
2294 insv
= (insv
>= 0 ? insv
>> len
: ~(~insv
>> len
));
2295 while (pos
> 0 && (insv
& 1) == sign
)
2297 insv
= (insv
>= 0 ? insv
>> 1 : ~(~insv
>> 1));
2303 insn
= emit_insn (gen_insvdi (operand0
,
2308 insn
= emit_insn (gen_insvsi (operand0
,
2313 len
= pos
> 0 && pos
< 5 ? pos
: 5;
2319 set_unique_reg_note (insn
, REG_EQUAL
, op1
);
2324 /* Now have insn-emit do whatever it normally does. */
2328 /* Examine EXP and return nonzero if it contains an ADDR_EXPR (meaning
2329 it will need a link/runtime reloc). */
2332 pa_reloc_needed (tree exp
)
2336 switch (TREE_CODE (exp
))
2341 case POINTER_PLUS_EXPR
:
2344 reloc
= pa_reloc_needed (TREE_OPERAND (exp
, 0));
2345 reloc
|= pa_reloc_needed (TREE_OPERAND (exp
, 1));
2349 case NON_LVALUE_EXPR
:
2350 reloc
= pa_reloc_needed (TREE_OPERAND (exp
, 0));
2356 unsigned HOST_WIDE_INT ix
;
2358 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (exp
), ix
, value
)
2360 reloc
|= pa_reloc_needed (value
);
2374 /* Return the best assembler insn template
2375 for moving operands[1] into operands[0] as a fullword. */
2377 pa_singlemove_string (rtx
*operands
)
2379 HOST_WIDE_INT intval
;
2381 if (GET_CODE (operands
[0]) == MEM
)
2382 return "stw %r1,%0";
2383 if (GET_CODE (operands
[1]) == MEM
)
2385 if (GET_CODE (operands
[1]) == CONST_DOUBLE
)
2389 gcc_assert (GET_MODE (operands
[1]) == SFmode
);
2391 /* Translate the CONST_DOUBLE to a CONST_INT with the same target
2393 REAL_VALUE_TO_TARGET_SINGLE (*CONST_DOUBLE_REAL_VALUE (operands
[1]), i
);
2395 operands
[1] = GEN_INT (i
);
2396 /* Fall through to CONST_INT case. */
2398 if (GET_CODE (operands
[1]) == CONST_INT
)
2400 intval
= INTVAL (operands
[1]);
2402 if (VAL_14_BITS_P (intval
))
2404 else if ((intval
& 0x7ff) == 0)
2405 return "ldil L'%1,%0";
2406 else if (pa_zdepi_cint_p (intval
))
2407 return "{zdepi %Z1,%0|depwi,z %Z1,%0}";
2409 return "ldil L'%1,%0\n\tldo R'%1(%0),%0";
2411 return "copy %1,%0";
2415 /* Compute position (in OP[1]) and width (in OP[2])
2416 useful for copying IMM to a register using the zdepi
2417 instructions. Store the immediate value to insert in OP[0]. */
2419 compute_zdepwi_operands (unsigned HOST_WIDE_INT imm
, unsigned *op
)
2423 /* Find the least significant set bit in IMM. */
2424 for (lsb
= 0; lsb
< 32; lsb
++)
2431 /* Choose variants based on *sign* of the 5-bit field. */
2432 if ((imm
& 0x10) == 0)
2433 len
= (lsb
<= 28) ? 4 : 32 - lsb
;
2436 /* Find the width of the bitstring in IMM. */
2437 for (len
= 5; len
< 32 - lsb
; len
++)
2439 if ((imm
& ((unsigned HOST_WIDE_INT
) 1 << len
)) == 0)
2443 /* Sign extend IMM as a 5-bit value. */
2444 imm
= (imm
& 0xf) - 0x10;
2452 /* Compute position (in OP[1]) and width (in OP[2])
2453 useful for copying IMM to a register using the depdi,z
2454 instructions. Store the immediate value to insert in OP[0]. */
2457 compute_zdepdi_operands (unsigned HOST_WIDE_INT imm
, unsigned *op
)
2459 int lsb
, len
, maxlen
;
2461 maxlen
= MIN (HOST_BITS_PER_WIDE_INT
, 64);
2463 /* Find the least significant set bit in IMM. */
2464 for (lsb
= 0; lsb
< maxlen
; lsb
++)
2471 /* Choose variants based on *sign* of the 5-bit field. */
2472 if ((imm
& 0x10) == 0)
2473 len
= (lsb
<= maxlen
- 4) ? 4 : maxlen
- lsb
;
2476 /* Find the width of the bitstring in IMM. */
2477 for (len
= 5; len
< maxlen
- lsb
; len
++)
2479 if ((imm
& ((unsigned HOST_WIDE_INT
) 1 << len
)) == 0)
2483 /* Extend length if host is narrow and IMM is negative. */
2484 if (HOST_BITS_PER_WIDE_INT
== 32 && len
== maxlen
- lsb
)
2487 /* Sign extend IMM as a 5-bit value. */
2488 imm
= (imm
& 0xf) - 0x10;
2496 /* Output assembler code to perform a doubleword move insn
2497 with operands OPERANDS. */
2500 pa_output_move_double (rtx
*operands
)
2502 enum { REGOP
, OFFSOP
, MEMOP
, CNSTOP
, RNDOP
} optype0
, optype1
;
2504 rtx addreg0
= 0, addreg1
= 0;
2507 /* First classify both operands. */
2509 if (REG_P (operands
[0]))
2511 else if (offsettable_memref_p (operands
[0]))
2513 else if (GET_CODE (operands
[0]) == MEM
)
2518 if (REG_P (operands
[1]))
2520 else if (CONSTANT_P (operands
[1]))
2522 else if (offsettable_memref_p (operands
[1]))
2524 else if (GET_CODE (operands
[1]) == MEM
)
2529 /* Check for the cases that the operand constraints are not
2530 supposed to allow to happen. */
2531 gcc_assert (optype0
== REGOP
|| optype1
== REGOP
);
2533 /* Handle copies between general and floating registers. */
2535 if (optype0
== REGOP
&& optype1
== REGOP
2536 && FP_REG_P (operands
[0]) ^ FP_REG_P (operands
[1]))
2538 if (FP_REG_P (operands
[0]))
2540 output_asm_insn ("{stws|stw} %1,-16(%%sp)", operands
);
2541 output_asm_insn ("{stws|stw} %R1,-12(%%sp)", operands
);
2542 return "{fldds|fldd} -16(%%sp),%0";
2546 output_asm_insn ("{fstds|fstd} %1,-16(%%sp)", operands
);
2547 output_asm_insn ("{ldws|ldw} -16(%%sp),%0", operands
);
2548 return "{ldws|ldw} -12(%%sp),%R0";
2552 /* Handle auto decrementing and incrementing loads and stores
2553 specifically, since the structure of the function doesn't work
2554 for them without major modification. Do it better when we learn
2555 this port about the general inc/dec addressing of PA.
2556 (This was written by tege. Chide him if it doesn't work.) */
2558 if (optype0
== MEMOP
)
2560 /* We have to output the address syntax ourselves, since print_operand
2561 doesn't deal with the addresses we want to use. Fix this later. */
2563 rtx addr
= XEXP (operands
[0], 0);
2564 if (GET_CODE (addr
) == POST_INC
|| GET_CODE (addr
) == POST_DEC
)
2566 rtx high_reg
= gen_rtx_SUBREG (SImode
, operands
[1], 0);
2568 operands
[0] = XEXP (addr
, 0);
2569 gcc_assert (GET_CODE (operands
[1]) == REG
2570 && GET_CODE (operands
[0]) == REG
);
2572 gcc_assert (!reg_overlap_mentioned_p (high_reg
, addr
));
2574 /* No overlap between high target register and address
2575 register. (We do this in a non-obvious way to
2576 save a register file writeback) */
2577 if (GET_CODE (addr
) == POST_INC
)
2578 return "{stws|stw},ma %1,8(%0)\n\tstw %R1,-4(%0)";
2579 return "{stws|stw},ma %1,-8(%0)\n\tstw %R1,12(%0)";
2581 else if (GET_CODE (addr
) == PRE_INC
|| GET_CODE (addr
) == PRE_DEC
)
2583 rtx high_reg
= gen_rtx_SUBREG (SImode
, operands
[1], 0);
2585 operands
[0] = XEXP (addr
, 0);
2586 gcc_assert (GET_CODE (operands
[1]) == REG
2587 && GET_CODE (operands
[0]) == REG
);
2589 gcc_assert (!reg_overlap_mentioned_p (high_reg
, addr
));
2590 /* No overlap between high target register and address
2591 register. (We do this in a non-obvious way to save a
2592 register file writeback) */
2593 if (GET_CODE (addr
) == PRE_INC
)
2594 return "{stws|stw},mb %1,8(%0)\n\tstw %R1,4(%0)";
2595 return "{stws|stw},mb %1,-8(%0)\n\tstw %R1,4(%0)";
2598 if (optype1
== MEMOP
)
2600 /* We have to output the address syntax ourselves, since print_operand
2601 doesn't deal with the addresses we want to use. Fix this later. */
2603 rtx addr
= XEXP (operands
[1], 0);
2604 if (GET_CODE (addr
) == POST_INC
|| GET_CODE (addr
) == POST_DEC
)
2606 rtx high_reg
= gen_rtx_SUBREG (SImode
, operands
[0], 0);
2608 operands
[1] = XEXP (addr
, 0);
2609 gcc_assert (GET_CODE (operands
[0]) == REG
2610 && GET_CODE (operands
[1]) == REG
);
2612 if (!reg_overlap_mentioned_p (high_reg
, addr
))
2614 /* No overlap between high target register and address
2615 register. (We do this in a non-obvious way to
2616 save a register file writeback) */
2617 if (GET_CODE (addr
) == POST_INC
)
2618 return "{ldws|ldw},ma 8(%1),%0\n\tldw -4(%1),%R0";
2619 return "{ldws|ldw},ma -8(%1),%0\n\tldw 12(%1),%R0";
2623 /* This is an undefined situation. We should load into the
2624 address register *and* update that register. Probably
2625 we don't need to handle this at all. */
2626 if (GET_CODE (addr
) == POST_INC
)
2627 return "ldw 4(%1),%R0\n\t{ldws|ldw},ma 8(%1),%0";
2628 return "ldw 4(%1),%R0\n\t{ldws|ldw},ma -8(%1),%0";
2631 else if (GET_CODE (addr
) == PRE_INC
|| GET_CODE (addr
) == PRE_DEC
)
2633 rtx high_reg
= gen_rtx_SUBREG (SImode
, operands
[0], 0);
2635 operands
[1] = XEXP (addr
, 0);
2636 gcc_assert (GET_CODE (operands
[0]) == REG
2637 && GET_CODE (operands
[1]) == REG
);
2639 if (!reg_overlap_mentioned_p (high_reg
, addr
))
2641 /* No overlap between high target register and address
2642 register. (We do this in a non-obvious way to
2643 save a register file writeback) */
2644 if (GET_CODE (addr
) == PRE_INC
)
2645 return "{ldws|ldw},mb 8(%1),%0\n\tldw 4(%1),%R0";
2646 return "{ldws|ldw},mb -8(%1),%0\n\tldw 4(%1),%R0";
2650 /* This is an undefined situation. We should load into the
2651 address register *and* update that register. Probably
2652 we don't need to handle this at all. */
2653 if (GET_CODE (addr
) == PRE_INC
)
2654 return "ldw 12(%1),%R0\n\t{ldws|ldw},mb 8(%1),%0";
2655 return "ldw -4(%1),%R0\n\t{ldws|ldw},mb -8(%1),%0";
2658 else if (GET_CODE (addr
) == PLUS
2659 && GET_CODE (XEXP (addr
, 0)) == MULT
)
2663 /* Load address into left half of destination register. */
2664 xoperands
[0] = gen_rtx_SUBREG (SImode
, operands
[0], 0);
2665 xoperands
[1] = XEXP (addr
, 1);
2666 xoperands
[2] = XEXP (XEXP (addr
, 0), 0);
2667 xoperands
[3] = XEXP (XEXP (addr
, 0), 1);
2668 output_asm_insn ("{sh%O3addl %2,%1,%0|shladd,l %2,%O3,%1,%0}",
2670 return "ldw 4(%0),%R0\n\tldw 0(%0),%0";
2672 else if (GET_CODE (addr
) == PLUS
2673 && REG_P (XEXP (addr
, 0))
2674 && REG_P (XEXP (addr
, 1)))
2678 /* Load address into left half of destination register. */
2679 xoperands
[0] = gen_rtx_SUBREG (SImode
, operands
[0], 0);
2680 xoperands
[1] = XEXP (addr
, 0);
2681 xoperands
[2] = XEXP (addr
, 1);
2682 output_asm_insn ("{addl|add,l} %1,%2,%0",
2684 return "ldw 4(%0),%R0\n\tldw 0(%0),%0";
2688 /* If an operand is an unoffsettable memory ref, find a register
2689 we can increment temporarily to make it refer to the second word. */
2691 if (optype0
== MEMOP
)
2692 addreg0
= find_addr_reg (XEXP (operands
[0], 0));
2694 if (optype1
== MEMOP
)
2695 addreg1
= find_addr_reg (XEXP (operands
[1], 0));
2697 /* Ok, we can do one word at a time.
2698 Normally we do the low-numbered word first.
2700 In either case, set up in LATEHALF the operands to use
2701 for the high-numbered word and in some cases alter the
2702 operands in OPERANDS to be suitable for the low-numbered word. */
2704 if (optype0
== REGOP
)
2705 latehalf
[0] = gen_rtx_REG (SImode
, REGNO (operands
[0]) + 1);
2706 else if (optype0
== OFFSOP
)
2707 latehalf
[0] = adjust_address_nv (operands
[0], SImode
, 4);
2709 latehalf
[0] = operands
[0];
2711 if (optype1
== REGOP
)
2712 latehalf
[1] = gen_rtx_REG (SImode
, REGNO (operands
[1]) + 1);
2713 else if (optype1
== OFFSOP
)
2714 latehalf
[1] = adjust_address_nv (operands
[1], SImode
, 4);
2715 else if (optype1
== CNSTOP
)
2717 if (GET_CODE (operands
[1]) == HIGH
)
2719 operands
[1] = XEXP (operands
[1], 0);
2722 split_double (operands
[1], &operands
[1], &latehalf
[1]);
2725 latehalf
[1] = operands
[1];
2727 /* If the first move would clobber the source of the second one,
2728 do them in the other order.
2730 This can happen in two cases:
2732 mem -> register where the first half of the destination register
2733 is the same register used in the memory's address. Reload
2734 can create such insns.
2736 mem in this case will be either register indirect or register
2737 indirect plus a valid offset.
2739 register -> register move where REGNO(dst) == REGNO(src + 1)
2740 someone (Tim/Tege?) claimed this can happen for parameter loads.
2742 Handle mem -> register case first. */
2743 if (optype0
== REGOP
2744 && (optype1
== MEMOP
|| optype1
== OFFSOP
)
2745 && refers_to_regno_p (REGNO (operands
[0]), operands
[1]))
2747 /* Do the late half first. */
2749 output_asm_insn ("ldo 4(%0),%0", &addreg1
);
2750 output_asm_insn (pa_singlemove_string (latehalf
), latehalf
);
2754 output_asm_insn ("ldo -4(%0),%0", &addreg1
);
2755 return pa_singlemove_string (operands
);
2758 /* Now handle register -> register case. */
2759 if (optype0
== REGOP
&& optype1
== REGOP
2760 && REGNO (operands
[0]) == REGNO (operands
[1]) + 1)
2762 output_asm_insn (pa_singlemove_string (latehalf
), latehalf
);
2763 return pa_singlemove_string (operands
);
2766 /* Normal case: do the two words, low-numbered first. */
2768 output_asm_insn (pa_singlemove_string (operands
), operands
);
2770 /* Make any unoffsettable addresses point at high-numbered word. */
2772 output_asm_insn ("ldo 4(%0),%0", &addreg0
);
2774 output_asm_insn ("ldo 4(%0),%0", &addreg1
);
2776 /* Do high-numbered word. */
2778 output_asm_insn ("ldil L'%1,%0", latehalf
);
2780 output_asm_insn (pa_singlemove_string (latehalf
), latehalf
);
2782 /* Undo the adds we just did. */
2784 output_asm_insn ("ldo -4(%0),%0", &addreg0
);
2786 output_asm_insn ("ldo -4(%0),%0", &addreg1
);
2792 pa_output_fp_move_double (rtx
*operands
)
2794 if (FP_REG_P (operands
[0]))
2796 if (FP_REG_P (operands
[1])
2797 || operands
[1] == CONST0_RTX (GET_MODE (operands
[0])))
2798 output_asm_insn ("fcpy,dbl %f1,%0", operands
);
2800 output_asm_insn ("fldd%F1 %1,%0", operands
);
2802 else if (FP_REG_P (operands
[1]))
2804 output_asm_insn ("fstd%F0 %1,%0", operands
);
2810 gcc_assert (operands
[1] == CONST0_RTX (GET_MODE (operands
[0])));
2812 /* This is a pain. You have to be prepared to deal with an
2813 arbitrary address here including pre/post increment/decrement.
2815 so avoid this in the MD. */
2816 gcc_assert (GET_CODE (operands
[0]) == REG
);
2818 xoperands
[1] = gen_rtx_REG (SImode
, REGNO (operands
[0]) + 1);
2819 xoperands
[0] = operands
[0];
2820 output_asm_insn ("copy %%r0,%0\n\tcopy %%r0,%1", xoperands
);
2825 /* Return a REG that occurs in ADDR with coefficient 1.
2826 ADDR can be effectively incremented by incrementing REG. */
2829 find_addr_reg (rtx addr
)
2831 while (GET_CODE (addr
) == PLUS
)
2833 if (GET_CODE (XEXP (addr
, 0)) == REG
)
2834 addr
= XEXP (addr
, 0);
2835 else if (GET_CODE (XEXP (addr
, 1)) == REG
)
2836 addr
= XEXP (addr
, 1);
2837 else if (CONSTANT_P (XEXP (addr
, 0)))
2838 addr
= XEXP (addr
, 1);
2839 else if (CONSTANT_P (XEXP (addr
, 1)))
2840 addr
= XEXP (addr
, 0);
2844 gcc_assert (GET_CODE (addr
) == REG
);
2848 /* Emit code to perform a block move.
2850 OPERANDS[0] is the destination pointer as a REG, clobbered.
2851 OPERANDS[1] is the source pointer as a REG, clobbered.
2852 OPERANDS[2] is a register for temporary storage.
2853 OPERANDS[3] is a register for temporary storage.
2854 OPERANDS[4] is the size as a CONST_INT
2855 OPERANDS[5] is the alignment safe to use, as a CONST_INT.
2856 OPERANDS[6] is another temporary register. */
2859 pa_output_block_move (rtx
*operands
, int size_is_constant ATTRIBUTE_UNUSED
)
2861 int align
= INTVAL (operands
[5]);
2862 unsigned long n_bytes
= INTVAL (operands
[4]);
2864 /* We can't move more than a word at a time because the PA
2865 has no longer integer move insns. (Could use fp mem ops?) */
2866 if (align
> (TARGET_64BIT
? 8 : 4))
2867 align
= (TARGET_64BIT
? 8 : 4);
2869 /* Note that we know each loop below will execute at least twice
2870 (else we would have open-coded the copy). */
2874 /* Pre-adjust the loop counter. */
2875 operands
[4] = GEN_INT (n_bytes
- 16);
2876 output_asm_insn ("ldi %4,%2", operands
);
2879 output_asm_insn ("ldd,ma 8(%1),%3", operands
);
2880 output_asm_insn ("ldd,ma 8(%1),%6", operands
);
2881 output_asm_insn ("std,ma %3,8(%0)", operands
);
2882 output_asm_insn ("addib,>= -16,%2,.-12", operands
);
2883 output_asm_insn ("std,ma %6,8(%0)", operands
);
2885 /* Handle the residual. There could be up to 7 bytes of
2886 residual to copy! */
2887 if (n_bytes
% 16 != 0)
2889 operands
[4] = GEN_INT (n_bytes
% 8);
2890 if (n_bytes
% 16 >= 8)
2891 output_asm_insn ("ldd,ma 8(%1),%3", operands
);
2892 if (n_bytes
% 8 != 0)
2893 output_asm_insn ("ldd 0(%1),%6", operands
);
2894 if (n_bytes
% 16 >= 8)
2895 output_asm_insn ("std,ma %3,8(%0)", operands
);
2896 if (n_bytes
% 8 != 0)
2897 output_asm_insn ("stdby,e %6,%4(%0)", operands
);
2902 /* Pre-adjust the loop counter. */
2903 operands
[4] = GEN_INT (n_bytes
- 8);
2904 output_asm_insn ("ldi %4,%2", operands
);
2907 output_asm_insn ("{ldws|ldw},ma 4(%1),%3", operands
);
2908 output_asm_insn ("{ldws|ldw},ma 4(%1),%6", operands
);
2909 output_asm_insn ("{stws|stw},ma %3,4(%0)", operands
);
2910 output_asm_insn ("addib,>= -8,%2,.-12", operands
);
2911 output_asm_insn ("{stws|stw},ma %6,4(%0)", operands
);
2913 /* Handle the residual. There could be up to 7 bytes of
2914 residual to copy! */
2915 if (n_bytes
% 8 != 0)
2917 operands
[4] = GEN_INT (n_bytes
% 4);
2918 if (n_bytes
% 8 >= 4)
2919 output_asm_insn ("{ldws|ldw},ma 4(%1),%3", operands
);
2920 if (n_bytes
% 4 != 0)
2921 output_asm_insn ("ldw 0(%1),%6", operands
);
2922 if (n_bytes
% 8 >= 4)
2923 output_asm_insn ("{stws|stw},ma %3,4(%0)", operands
);
2924 if (n_bytes
% 4 != 0)
2925 output_asm_insn ("{stbys|stby},e %6,%4(%0)", operands
);
2930 /* Pre-adjust the loop counter. */
2931 operands
[4] = GEN_INT (n_bytes
- 4);
2932 output_asm_insn ("ldi %4,%2", operands
);
2935 output_asm_insn ("{ldhs|ldh},ma 2(%1),%3", operands
);
2936 output_asm_insn ("{ldhs|ldh},ma 2(%1),%6", operands
);
2937 output_asm_insn ("{sths|sth},ma %3,2(%0)", operands
);
2938 output_asm_insn ("addib,>= -4,%2,.-12", operands
);
2939 output_asm_insn ("{sths|sth},ma %6,2(%0)", operands
);
2941 /* Handle the residual. */
2942 if (n_bytes
% 4 != 0)
2944 if (n_bytes
% 4 >= 2)
2945 output_asm_insn ("{ldhs|ldh},ma 2(%1),%3", operands
);
2946 if (n_bytes
% 2 != 0)
2947 output_asm_insn ("ldb 0(%1),%6", operands
);
2948 if (n_bytes
% 4 >= 2)
2949 output_asm_insn ("{sths|sth},ma %3,2(%0)", operands
);
2950 if (n_bytes
% 2 != 0)
2951 output_asm_insn ("stb %6,0(%0)", operands
);
2956 /* Pre-adjust the loop counter. */
2957 operands
[4] = GEN_INT (n_bytes
- 2);
2958 output_asm_insn ("ldi %4,%2", operands
);
2961 output_asm_insn ("{ldbs|ldb},ma 1(%1),%3", operands
);
2962 output_asm_insn ("{ldbs|ldb},ma 1(%1),%6", operands
);
2963 output_asm_insn ("{stbs|stb},ma %3,1(%0)", operands
);
2964 output_asm_insn ("addib,>= -2,%2,.-12", operands
);
2965 output_asm_insn ("{stbs|stb},ma %6,1(%0)", operands
);
2967 /* Handle the residual. */
2968 if (n_bytes
% 2 != 0)
2970 output_asm_insn ("ldb 0(%1),%3", operands
);
2971 output_asm_insn ("stb %3,0(%0)", operands
);
2980 /* Count the number of insns necessary to handle this block move.
2982 Basic structure is the same as emit_block_move, except that we
2983 count insns rather than emit them. */
2986 compute_cpymem_length (rtx_insn
*insn
)
2988 rtx pat
= PATTERN (insn
);
2989 unsigned int align
= INTVAL (XEXP (XVECEXP (pat
, 0, 7), 0));
2990 unsigned long n_bytes
= INTVAL (XEXP (XVECEXP (pat
, 0, 6), 0));
2991 unsigned int n_insns
= 0;
2993 /* We can't move more than four bytes at a time because the PA
2994 has no longer integer move insns. (Could use fp mem ops?) */
2995 if (align
> (TARGET_64BIT
? 8 : 4))
2996 align
= (TARGET_64BIT
? 8 : 4);
2998 /* The basic copying loop. */
3002 if (n_bytes
% (2 * align
) != 0)
3004 if ((n_bytes
% (2 * align
)) >= align
)
3007 if ((n_bytes
% align
) != 0)
3011 /* Lengths are expressed in bytes now; each insn is 4 bytes. */
3015 /* Emit code to perform a block clear.
3017 OPERANDS[0] is the destination pointer as a REG, clobbered.
3018 OPERANDS[1] is a register for temporary storage.
3019 OPERANDS[2] is the size as a CONST_INT
3020 OPERANDS[3] is the alignment safe to use, as a CONST_INT. */
3023 pa_output_block_clear (rtx
*operands
, int size_is_constant ATTRIBUTE_UNUSED
)
3025 int align
= INTVAL (operands
[3]);
3026 unsigned long n_bytes
= INTVAL (operands
[2]);
3028 /* We can't clear more than a word at a time because the PA
3029 has no longer integer move insns. */
3030 if (align
> (TARGET_64BIT
? 8 : 4))
3031 align
= (TARGET_64BIT
? 8 : 4);
3033 /* Note that we know each loop below will execute at least twice
3034 (else we would have open-coded the copy). */
3038 /* Pre-adjust the loop counter. */
3039 operands
[2] = GEN_INT (n_bytes
- 16);
3040 output_asm_insn ("ldi %2,%1", operands
);
3043 output_asm_insn ("std,ma %%r0,8(%0)", operands
);
3044 output_asm_insn ("addib,>= -16,%1,.-4", operands
);
3045 output_asm_insn ("std,ma %%r0,8(%0)", operands
);
3047 /* Handle the residual. There could be up to 7 bytes of
3048 residual to copy! */
3049 if (n_bytes
% 16 != 0)
3051 operands
[2] = GEN_INT (n_bytes
% 8);
3052 if (n_bytes
% 16 >= 8)
3053 output_asm_insn ("std,ma %%r0,8(%0)", operands
);
3054 if (n_bytes
% 8 != 0)
3055 output_asm_insn ("stdby,e %%r0,%2(%0)", operands
);
3060 /* Pre-adjust the loop counter. */
3061 operands
[2] = GEN_INT (n_bytes
- 8);
3062 output_asm_insn ("ldi %2,%1", operands
);
3065 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands
);
3066 output_asm_insn ("addib,>= -8,%1,.-4", operands
);
3067 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands
);
3069 /* Handle the residual. There could be up to 7 bytes of
3070 residual to copy! */
3071 if (n_bytes
% 8 != 0)
3073 operands
[2] = GEN_INT (n_bytes
% 4);
3074 if (n_bytes
% 8 >= 4)
3075 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands
);
3076 if (n_bytes
% 4 != 0)
3077 output_asm_insn ("{stbys|stby},e %%r0,%2(%0)", operands
);
3082 /* Pre-adjust the loop counter. */
3083 operands
[2] = GEN_INT (n_bytes
- 4);
3084 output_asm_insn ("ldi %2,%1", operands
);
3087 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands
);
3088 output_asm_insn ("addib,>= -4,%1,.-4", operands
);
3089 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands
);
3091 /* Handle the residual. */
3092 if (n_bytes
% 4 != 0)
3094 if (n_bytes
% 4 >= 2)
3095 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands
);
3096 if (n_bytes
% 2 != 0)
3097 output_asm_insn ("stb %%r0,0(%0)", operands
);
3102 /* Pre-adjust the loop counter. */
3103 operands
[2] = GEN_INT (n_bytes
- 2);
3104 output_asm_insn ("ldi %2,%1", operands
);
3107 output_asm_insn ("{stbs|stb},ma %%r0,1(%0)", operands
);
3108 output_asm_insn ("addib,>= -2,%1,.-4", operands
);
3109 output_asm_insn ("{stbs|stb},ma %%r0,1(%0)", operands
);
3111 /* Handle the residual. */
3112 if (n_bytes
% 2 != 0)
3113 output_asm_insn ("stb %%r0,0(%0)", operands
);
3122 /* Count the number of insns necessary to handle this block move.
3124 Basic structure is the same as emit_block_move, except that we
3125 count insns rather than emit them. */
3128 compute_clrmem_length (rtx_insn
*insn
)
3130 rtx pat
= PATTERN (insn
);
3131 unsigned int align
= INTVAL (XEXP (XVECEXP (pat
, 0, 4), 0));
3132 unsigned long n_bytes
= INTVAL (XEXP (XVECEXP (pat
, 0, 3), 0));
3133 unsigned int n_insns
= 0;
3135 /* We can't clear more than a word at a time because the PA
3136 has no longer integer move insns. */
3137 if (align
> (TARGET_64BIT
? 8 : 4))
3138 align
= (TARGET_64BIT
? 8 : 4);
3140 /* The basic loop. */
3144 if (n_bytes
% (2 * align
) != 0)
3146 if ((n_bytes
% (2 * align
)) >= align
)
3149 if ((n_bytes
% align
) != 0)
3153 /* Lengths are expressed in bytes now; each insn is 4 bytes. */
3159 pa_output_and (rtx
*operands
)
3161 if (GET_CODE (operands
[2]) == CONST_INT
&& INTVAL (operands
[2]) != 0)
3163 unsigned HOST_WIDE_INT mask
= INTVAL (operands
[2]);
3164 int ls0
, ls1
, ms0
, p
, len
;
3166 for (ls0
= 0; ls0
< 32; ls0
++)
3167 if ((mask
& (1 << ls0
)) == 0)
3170 for (ls1
= ls0
; ls1
< 32; ls1
++)
3171 if ((mask
& (1 << ls1
)) != 0)
3174 for (ms0
= ls1
; ms0
< 32; ms0
++)
3175 if ((mask
& (1 << ms0
)) == 0)
3178 gcc_assert (ms0
== 32);
3186 operands
[2] = GEN_INT (len
);
3187 return "{extru|extrw,u} %1,31,%2,%0";
3191 /* We could use this `depi' for the case above as well, but `depi'
3192 requires one more register file access than an `extru'. */
3197 operands
[2] = GEN_INT (p
);
3198 operands
[3] = GEN_INT (len
);
3199 return "{depi|depwi} 0,%2,%3,%0";
3203 return "and %1,%2,%0";
3206 /* Return a string to perform a bitwise-and of operands[1] with operands[2]
3207 storing the result in operands[0]. */
3209 pa_output_64bit_and (rtx
*operands
)
3211 if (GET_CODE (operands
[2]) == CONST_INT
&& INTVAL (operands
[2]) != 0)
3213 unsigned HOST_WIDE_INT mask
= INTVAL (operands
[2]);
3214 int ls0
, ls1
, ms0
, p
, len
;
3216 for (ls0
= 0; ls0
< HOST_BITS_PER_WIDE_INT
; ls0
++)
3217 if ((mask
& ((unsigned HOST_WIDE_INT
) 1 << ls0
)) == 0)
3220 for (ls1
= ls0
; ls1
< HOST_BITS_PER_WIDE_INT
; ls1
++)
3221 if ((mask
& ((unsigned HOST_WIDE_INT
) 1 << ls1
)) != 0)
3224 for (ms0
= ls1
; ms0
< HOST_BITS_PER_WIDE_INT
; ms0
++)
3225 if ((mask
& ((unsigned HOST_WIDE_INT
) 1 << ms0
)) == 0)
3228 gcc_assert (ms0
== HOST_BITS_PER_WIDE_INT
);
3230 if (ls1
== HOST_BITS_PER_WIDE_INT
)
3236 operands
[2] = GEN_INT (len
);
3237 return "extrd,u %1,63,%2,%0";
3241 /* We could use this `depi' for the case above as well, but `depi'
3242 requires one more register file access than an `extru'. */
3247 operands
[2] = GEN_INT (p
);
3248 operands
[3] = GEN_INT (len
);
3249 return "depdi 0,%2,%3,%0";
3253 return "and %1,%2,%0";
3257 pa_output_ior (rtx
*operands
)
3259 unsigned HOST_WIDE_INT mask
= INTVAL (operands
[2]);
3260 int bs0
, bs1
, p
, len
;
3262 if (INTVAL (operands
[2]) == 0)
3263 return "copy %1,%0";
3265 for (bs0
= 0; bs0
< 32; bs0
++)
3266 if ((mask
& (1 << bs0
)) != 0)
3269 for (bs1
= bs0
; bs1
< 32; bs1
++)
3270 if ((mask
& (1 << bs1
)) == 0)
3273 gcc_assert (bs1
== 32 || ((unsigned HOST_WIDE_INT
) 1 << bs1
) > mask
);
3278 operands
[2] = GEN_INT (p
);
3279 operands
[3] = GEN_INT (len
);
3280 return "{depi|depwi} -1,%2,%3,%0";
3283 /* Return a string to perform a bitwise-and of operands[1] with operands[2]
3284 storing the result in operands[0]. */
3286 pa_output_64bit_ior (rtx
*operands
)
3288 unsigned HOST_WIDE_INT mask
= INTVAL (operands
[2]);
3289 int bs0
, bs1
, p
, len
;
3291 if (INTVAL (operands
[2]) == 0)
3292 return "copy %1,%0";
3294 for (bs0
= 0; bs0
< HOST_BITS_PER_WIDE_INT
; bs0
++)
3295 if ((mask
& ((unsigned HOST_WIDE_INT
) 1 << bs0
)) != 0)
3298 for (bs1
= bs0
; bs1
< HOST_BITS_PER_WIDE_INT
; bs1
++)
3299 if ((mask
& ((unsigned HOST_WIDE_INT
) 1 << bs1
)) == 0)
3302 gcc_assert (bs1
== HOST_BITS_PER_WIDE_INT
3303 || ((unsigned HOST_WIDE_INT
) 1 << bs1
) > mask
);
3308 operands
[2] = GEN_INT (p
);
3309 operands
[3] = GEN_INT (len
);
3310 return "depdi -1,%2,%3,%0";
3313 /* Target hook for assembling integer objects. This code handles
3314 aligned SI and DI integers specially since function references
3315 must be preceded by P%. */
3318 pa_assemble_integer (rtx x
, unsigned int size
, int aligned_p
)
3323 /* When we have a SYMBOL_REF with a SYMBOL_REF_DECL, we need to call
3324 call assemble_external and set the SYMBOL_REF_DECL to NULL before
3325 calling output_addr_const. Otherwise, it may call assemble_external
3326 in the midst of outputing the assembler code for the SYMBOL_REF.
3327 We restore the SYMBOL_REF_DECL after the output is done. */
3328 if (GET_CODE (x
) == SYMBOL_REF
)
3330 decl
= SYMBOL_REF_DECL (x
);
3333 assemble_external (decl
);
3334 SET_SYMBOL_REF_DECL (x
, NULL
);
3338 if (size
== UNITS_PER_WORD
3340 && function_label_operand (x
, VOIDmode
))
3342 fputs (size
== 8? "\t.dword\t" : "\t.word\t", asm_out_file
);
3344 /* We don't want an OPD when generating fast indirect calls. */
3345 if (!TARGET_FAST_INDIRECT_CALLS
)
3346 fputs ("P%", asm_out_file
);
3348 output_addr_const (asm_out_file
, x
);
3349 fputc ('\n', asm_out_file
);
3353 result
= default_assemble_integer (x
, size
, aligned_p
);
3356 SET_SYMBOL_REF_DECL (x
, decl
);
3361 /* Output an ascii string. */
3363 pa_output_ascii (FILE *file
, const char *p
, int size
)
3367 unsigned char partial_output
[16]; /* Max space 4 chars can occupy. */
3369 /* The HP assembler can only take strings of 256 characters at one
3370 time. This is a limitation on input line length, *not* the
3371 length of the string. Sigh. Even worse, it seems that the
3372 restriction is in number of input characters (see \xnn &
3373 \whatever). So we have to do this very carefully. */
3375 fputs ("\t.STRING \"", file
);
3378 for (i
= 0; i
< size
; i
+= 4)
3382 for (io
= 0, co
= 0; io
< MIN (4, size
- i
); io
++)
3384 register unsigned int c
= (unsigned char) p
[i
+ io
];
3386 if (c
== '\"' || c
== '\\')
3387 partial_output
[co
++] = '\\';
3388 if (c
>= ' ' && c
< 0177)
3389 partial_output
[co
++] = c
;
3393 partial_output
[co
++] = '\\';
3394 partial_output
[co
++] = 'x';
3395 hexd
= c
/ 16 - 0 + '0';
3397 hexd
-= '9' - 'a' + 1;
3398 partial_output
[co
++] = hexd
;
3399 hexd
= c
% 16 - 0 + '0';
3401 hexd
-= '9' - 'a' + 1;
3402 partial_output
[co
++] = hexd
;
3405 if (chars_output
+ co
> 243)
3407 fputs ("\"\n\t.STRING \"", file
);
3410 fwrite (partial_output
, 1, (size_t) co
, file
);
3414 fputs ("\"\n", file
);
3417 /* Try to rewrite floating point comparisons & branches to avoid
3418 useless add,tr insns.
3420 CHECK_NOTES is nonzero if we should examine REG_DEAD notes
3421 to see if FPCC is dead. CHECK_NOTES is nonzero for the
3422 first attempt to remove useless add,tr insns. It is zero
3423 for the second pass as reorg sometimes leaves bogus REG_DEAD
3426 When CHECK_NOTES is zero we can only eliminate add,tr insns
3427 when there's a 1:1 correspondence between fcmp and ftest/fbranch
3430 remove_useless_addtr_insns (int check_notes
)
3433 static int pass
= 0;
3435 /* This is fairly cheap, so always run it when optimizing. */
3439 int fbranch_count
= 0;
3441 /* Walk all the insns in this function looking for fcmp & fbranch
3442 instructions. Keep track of how many of each we find. */
3443 for (insn
= get_insns (); insn
; insn
= next_insn (insn
))
3447 /* Ignore anything that isn't an INSN or a JUMP_INSN. */
3448 if (! NONJUMP_INSN_P (insn
) && ! JUMP_P (insn
))
3451 tmp
= PATTERN (insn
);
3453 /* It must be a set. */
3454 if (GET_CODE (tmp
) != SET
)
3457 /* If the destination is CCFP, then we've found an fcmp insn. */
3458 tmp
= SET_DEST (tmp
);
3459 if (GET_CODE (tmp
) == REG
&& REGNO (tmp
) == 0)
3465 tmp
= PATTERN (insn
);
3466 /* If this is an fbranch instruction, bump the fbranch counter. */
3467 if (GET_CODE (tmp
) == SET
3468 && SET_DEST (tmp
) == pc_rtx
3469 && GET_CODE (SET_SRC (tmp
)) == IF_THEN_ELSE
3470 && GET_CODE (XEXP (SET_SRC (tmp
), 0)) == NE
3471 && GET_CODE (XEXP (XEXP (SET_SRC (tmp
), 0), 0)) == REG
3472 && REGNO (XEXP (XEXP (SET_SRC (tmp
), 0), 0)) == 0)
3480 /* Find all floating point compare + branch insns. If possible,
3481 reverse the comparison & the branch to avoid add,tr insns. */
3482 for (insn
= get_insns (); insn
; insn
= next_insn (insn
))
3487 /* Ignore anything that isn't an INSN. */
3488 if (! NONJUMP_INSN_P (insn
))
3491 tmp
= PATTERN (insn
);
3493 /* It must be a set. */
3494 if (GET_CODE (tmp
) != SET
)
3497 /* The destination must be CCFP, which is register zero. */
3498 tmp
= SET_DEST (tmp
);
3499 if (GET_CODE (tmp
) != REG
|| REGNO (tmp
) != 0)
3502 /* INSN should be a set of CCFP.
3504 See if the result of this insn is used in a reversed FP
3505 conditional branch. If so, reverse our condition and
3506 the branch. Doing so avoids useless add,tr insns. */
3507 next
= next_insn (insn
);
3510 /* Jumps, calls and labels stop our search. */
3511 if (JUMP_P (next
) || CALL_P (next
) || LABEL_P (next
))
3514 /* As does another fcmp insn. */
3515 if (NONJUMP_INSN_P (next
)
3516 && GET_CODE (PATTERN (next
)) == SET
3517 && GET_CODE (SET_DEST (PATTERN (next
))) == REG
3518 && REGNO (SET_DEST (PATTERN (next
))) == 0)
3521 next
= next_insn (next
);
3524 /* Is NEXT_INSN a branch? */
3525 if (next
&& JUMP_P (next
))
3527 rtx pattern
= PATTERN (next
);
3529 /* If it a reversed fp conditional branch (e.g. uses add,tr)
3530 and CCFP dies, then reverse our conditional and the branch
3531 to avoid the add,tr. */
3532 if (GET_CODE (pattern
) == SET
3533 && SET_DEST (pattern
) == pc_rtx
3534 && GET_CODE (SET_SRC (pattern
)) == IF_THEN_ELSE
3535 && GET_CODE (XEXP (SET_SRC (pattern
), 0)) == NE
3536 && GET_CODE (XEXP (XEXP (SET_SRC (pattern
), 0), 0)) == REG
3537 && REGNO (XEXP (XEXP (SET_SRC (pattern
), 0), 0)) == 0
3538 && GET_CODE (XEXP (SET_SRC (pattern
), 1)) == PC
3539 && (fcmp_count
== fbranch_count
3541 && find_regno_note (next
, REG_DEAD
, 0))))
3543 /* Reverse the branch. */
3544 tmp
= XEXP (SET_SRC (pattern
), 1);
3545 XEXP (SET_SRC (pattern
), 1) = XEXP (SET_SRC (pattern
), 2);
3546 XEXP (SET_SRC (pattern
), 2) = tmp
;
3547 INSN_CODE (next
) = -1;
3549 /* Reverse our condition. */
3550 tmp
= PATTERN (insn
);
3551 PUT_CODE (XEXP (tmp
, 1),
3552 (reverse_condition_maybe_unordered
3553 (GET_CODE (XEXP (tmp
, 1)))));
3563 /* You may have trouble believing this, but this is the 32 bit HP-PA
3568 Variable arguments (optional; any number may be allocated)
3570 SP-(4*(N+9)) arg word N
3575 Fixed arguments (must be allocated; may remain unused)
3584 SP-32 External Data Pointer (DP)
3586 SP-24 External/stub RP (RP')
3590 SP-8 Calling Stub RP (RP'')
3595 SP-0 Stack Pointer (points to next available address)
3599 /* This function saves registers as follows. Registers marked with ' are
3600 this function's registers (as opposed to the previous function's).
3601 If a frame_pointer isn't needed, r4 is saved as a general register;
3602 the space for the frame pointer is still allocated, though, to keep
3608 SP (FP') Previous FP
3609 SP + 4 Alignment filler (sigh)
3610 SP + 8 Space for locals reserved here.
3614 SP + n All call saved register used.
3618 SP + o All call saved fp registers used.
3622 SP + p (SP') points to next available address.
3626 /* Global variables set by output_function_prologue(). */
3627 /* Size of frame. Need to know this to emit return insns from
3629 static HOST_WIDE_INT actual_fsize
, local_fsize
;
3630 static int save_fregs
;
3632 /* Emit RTL to store REG at the memory location specified by BASE+DISP.
3633 Handle case where DISP > 8k by using the add_high_const patterns.
3635 Note in DISP > 8k case, we will leave the high part of the address
3636 in %r1. There is code in expand_hppa_{prologue,epilogue} that knows this.*/
3639 store_reg (int reg
, HOST_WIDE_INT disp
, int base
)
3641 rtx dest
, src
, basereg
;
3644 src
= gen_rtx_REG (word_mode
, reg
);
3645 basereg
= gen_rtx_REG (Pmode
, base
);
3646 if (VAL_14_BITS_P (disp
))
3648 dest
= gen_rtx_MEM (word_mode
, plus_constant (Pmode
, basereg
, disp
));
3649 insn
= emit_move_insn (dest
, src
);
3651 else if (TARGET_64BIT
&& !VAL_32_BITS_P (disp
))
3653 rtx delta
= GEN_INT (disp
);
3654 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
3656 emit_move_insn (tmpreg
, delta
);
3657 insn
= emit_move_insn (tmpreg
, gen_rtx_PLUS (Pmode
, tmpreg
, basereg
));
3660 add_reg_note (insn
, REG_FRAME_RELATED_EXPR
,
3661 gen_rtx_SET (tmpreg
,
3662 gen_rtx_PLUS (Pmode
, basereg
, delta
)));
3663 RTX_FRAME_RELATED_P (insn
) = 1;
3665 dest
= gen_rtx_MEM (word_mode
, tmpreg
);
3666 insn
= emit_move_insn (dest
, src
);
3670 rtx delta
= GEN_INT (disp
);
3671 rtx high
= gen_rtx_PLUS (Pmode
, basereg
, gen_rtx_HIGH (Pmode
, delta
));
3672 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
3674 emit_move_insn (tmpreg
, high
);
3675 dest
= gen_rtx_MEM (word_mode
, gen_rtx_LO_SUM (Pmode
, tmpreg
, delta
));
3676 insn
= emit_move_insn (dest
, src
);
3678 add_reg_note (insn
, REG_FRAME_RELATED_EXPR
,
3679 gen_rtx_SET (gen_rtx_MEM (word_mode
,
3680 gen_rtx_PLUS (word_mode
,
3687 RTX_FRAME_RELATED_P (insn
) = 1;
3690 /* Emit RTL to store REG at the memory location specified by BASE and then
3691 add MOD to BASE. MOD must be <= 8k. */
3694 store_reg_modify (int base
, int reg
, HOST_WIDE_INT mod
)
3696 rtx basereg
, srcreg
, delta
;
3699 gcc_assert (VAL_14_BITS_P (mod
));
3701 basereg
= gen_rtx_REG (Pmode
, base
);
3702 srcreg
= gen_rtx_REG (word_mode
, reg
);
3703 delta
= GEN_INT (mod
);
3705 insn
= emit_insn (gen_post_store (basereg
, srcreg
, delta
));
3708 RTX_FRAME_RELATED_P (insn
) = 1;
3710 /* RTX_FRAME_RELATED_P must be set on each frame related set
3711 in a parallel with more than one element. */
3712 RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn
), 0, 0)) = 1;
3713 RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn
), 0, 1)) = 1;
3717 /* Emit RTL to set REG to the value specified by BASE+DISP. Handle case
3718 where DISP > 8k by using the add_high_const patterns. NOTE indicates
3719 whether to add a frame note or not.
3721 In the DISP > 8k case, we leave the high part of the address in %r1.
3722 There is code in expand_hppa_{prologue,epilogue} that knows about this. */
3725 set_reg_plus_d (int reg
, int base
, HOST_WIDE_INT disp
, int note
)
3729 if (VAL_14_BITS_P (disp
))
3731 insn
= emit_move_insn (gen_rtx_REG (Pmode
, reg
),
3732 plus_constant (Pmode
,
3733 gen_rtx_REG (Pmode
, base
), disp
));
3735 else if (TARGET_64BIT
&& !VAL_32_BITS_P (disp
))
3737 rtx basereg
= gen_rtx_REG (Pmode
, base
);
3738 rtx delta
= GEN_INT (disp
);
3739 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
3741 emit_move_insn (tmpreg
, delta
);
3742 insn
= emit_move_insn (gen_rtx_REG (Pmode
, reg
),
3743 gen_rtx_PLUS (Pmode
, tmpreg
, basereg
));
3745 add_reg_note (insn
, REG_FRAME_RELATED_EXPR
,
3746 gen_rtx_SET (tmpreg
,
3747 gen_rtx_PLUS (Pmode
, basereg
, delta
)));
3751 rtx basereg
= gen_rtx_REG (Pmode
, base
);
3752 rtx delta
= GEN_INT (disp
);
3753 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
3755 emit_move_insn (tmpreg
,
3756 gen_rtx_PLUS (Pmode
, basereg
,
3757 gen_rtx_HIGH (Pmode
, delta
)));
3758 insn
= emit_move_insn (gen_rtx_REG (Pmode
, reg
),
3759 gen_rtx_LO_SUM (Pmode
, tmpreg
, delta
));
3762 if (DO_FRAME_NOTES
&& note
)
3763 RTX_FRAME_RELATED_P (insn
) = 1;
3767 pa_compute_frame_size (poly_int64 size
, int *fregs_live
)
3772 /* The code in pa_expand_prologue and pa_expand_epilogue must
3773 be consistent with the rounding and size calculation done here.
3774 Change them at the same time. */
3776 /* We do our own stack alignment. First, round the size of the
3777 stack locals up to a word boundary. */
3778 size
= (size
+ UNITS_PER_WORD
- 1) & ~(UNITS_PER_WORD
- 1);
3780 /* Space for previous frame pointer + filler. If any frame is
3781 allocated, we need to add in the TARGET_STARTING_FRAME_OFFSET. We
3782 waste some space here for the sake of HP compatibility. The
3783 first slot is only used when the frame pointer is needed. */
3784 if (size
|| frame_pointer_needed
)
3785 size
+= pa_starting_frame_offset ();
3787 /* If the current function calls __builtin_eh_return, then we need
3788 to allocate stack space for registers that will hold data for
3789 the exception handler. */
3790 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
3794 for (i
= 0; EH_RETURN_DATA_REGNO (i
) != INVALID_REGNUM
; ++i
)
3796 size
+= i
* UNITS_PER_WORD
;
3799 /* Account for space used by the callee general register saves. */
3800 for (i
= 18, j
= frame_pointer_needed
? 4 : 3; i
>= j
; i
--)
3801 if (df_regs_ever_live_p (i
))
3802 size
+= UNITS_PER_WORD
;
3804 /* Account for space used by the callee floating point register saves. */
3805 for (i
= FP_SAVED_REG_LAST
; i
>= FP_SAVED_REG_FIRST
; i
-= FP_REG_STEP
)
3806 if (df_regs_ever_live_p (i
)
3807 || (!TARGET_64BIT
&& df_regs_ever_live_p (i
+ 1)))
3811 /* We always save both halves of the FP register, so always
3812 increment the frame size by 8 bytes. */
3816 /* If any of the floating registers are saved, account for the
3817 alignment needed for the floating point register save block. */
3820 size
= (size
+ 7) & ~7;
3825 /* The various ABIs include space for the outgoing parameters in the
3826 size of the current function's stack frame. We don't need to align
3827 for the outgoing arguments as their alignment is set by the final
3828 rounding for the frame as a whole. */
3829 size
+= crtl
->outgoing_args_size
;
3831 /* Allocate space for the fixed frame marker. This space must be
3832 allocated for any function that makes calls or allocates
3834 if (!crtl
->is_leaf
|| size
)
3835 size
+= TARGET_64BIT
? 48 : 32;
3837 /* Finally, round to the preferred stack boundary. */
3838 return ((size
+ PREFERRED_STACK_BOUNDARY
/ BITS_PER_UNIT
- 1)
3839 & ~(PREFERRED_STACK_BOUNDARY
/ BITS_PER_UNIT
- 1));
3842 /* Output function label, and associated .PROC and .CALLINFO statements. */
3845 pa_output_function_label (FILE *file
)
3847 /* The function's label and associated .PROC must never be
3848 separated and must be output *after* any profiling declarations
3849 to avoid changing spaces/subspaces within a procedure. */
3850 ASM_OUTPUT_LABEL (file
, XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0));
3851 fputs ("\t.PROC\n", file
);
3853 /* pa_expand_prologue does the dirty work now. We just need
3854 to output the assembler directives which denote the start
3856 fprintf (file
, "\t.CALLINFO FRAME=" HOST_WIDE_INT_PRINT_DEC
, actual_fsize
);
3858 fputs (",NO_CALLS", file
);
3860 fputs (",CALLS", file
);
3862 fputs (",SAVE_RP", file
);
3864 /* The SAVE_SP flag is used to indicate that register %r3 is stored
3865 at the beginning of the frame and that it is used as the frame
3866 pointer for the frame. We do this because our current frame
3867 layout doesn't conform to that specified in the HP runtime
3868 documentation and we need a way to indicate to programs such as
3869 GDB where %r3 is saved. The SAVE_SP flag was chosen because it
3870 isn't used by HP compilers but is supported by the assembler.
3871 However, SAVE_SP is supposed to indicate that the previous stack
3872 pointer has been saved in the frame marker. */
3873 if (frame_pointer_needed
)
3874 fputs (",SAVE_SP", file
);
3876 /* Pass on information about the number of callee register saves
3877 performed in the prologue.
3879 The compiler is supposed to pass the highest register number
3880 saved, the assembler then has to adjust that number before
3881 entering it into the unwind descriptor (to account for any
3882 caller saved registers with lower register numbers than the
3883 first callee saved register). */
3885 fprintf (file
, ",ENTRY_GR=%d", gr_saved
+ 2);
3888 fprintf (file
, ",ENTRY_FR=%d", fr_saved
+ 11);
3890 fputs ("\n\t.ENTRY\n", file
);
3893 /* Output function prologue. */
3896 pa_output_function_prologue (FILE *file
)
3898 pa_output_function_label (file
);
3899 remove_useless_addtr_insns (0);
3902 /* The label is output by ASM_DECLARE_FUNCTION_NAME on linux. */
3905 pa_linux_output_function_prologue (FILE *file ATTRIBUTE_UNUSED
)
3907 remove_useless_addtr_insns (0);
3911 pa_expand_prologue (void)
3913 int merge_sp_adjust_with_store
= 0;
3914 HOST_WIDE_INT size
= get_frame_size ();
3915 HOST_WIDE_INT offset
;
3924 /* Compute total size for frame pointer, filler, locals and rounding to
3925 the next word boundary. Similar code appears in pa_compute_frame_size
3926 and must be changed in tandem with this code. */
3927 local_fsize
= (size
+ UNITS_PER_WORD
- 1) & ~(UNITS_PER_WORD
- 1);
3928 if (local_fsize
|| frame_pointer_needed
)
3929 local_fsize
+= pa_starting_frame_offset ();
3931 actual_fsize
= pa_compute_frame_size (size
, &save_fregs
);
3932 if (flag_stack_usage_info
)
3933 current_function_static_stack_size
= actual_fsize
;
3935 /* Compute a few things we will use often. */
3936 tmpreg
= gen_rtx_REG (word_mode
, 1);
3938 /* Save RP first. The calling conventions manual states RP will
3939 always be stored into the caller's frame at sp - 20 or sp - 16
3940 depending on which ABI is in use. */
3941 if (df_regs_ever_live_p (2) || crtl
->calls_eh_return
)
3943 store_reg (2, TARGET_64BIT
? -16 : -20, STACK_POINTER_REGNUM
);
3949 /* Allocate the local frame and set up the frame pointer if needed. */
3950 if (actual_fsize
!= 0)
3952 if (frame_pointer_needed
)
3954 /* Copy the old frame pointer temporarily into %r1. Set up the
3955 new stack pointer, then store away the saved old frame pointer
3956 into the stack at sp and at the same time update the stack
3957 pointer by actual_fsize bytes. Two versions, first
3958 handles small (<8k) frames. The second handles large (>=8k)
3960 insn
= emit_move_insn (tmpreg
, hard_frame_pointer_rtx
);
3962 RTX_FRAME_RELATED_P (insn
) = 1;
3964 insn
= emit_move_insn (hard_frame_pointer_rtx
, stack_pointer_rtx
);
3966 RTX_FRAME_RELATED_P (insn
) = 1;
3968 if (VAL_14_BITS_P (actual_fsize
))
3969 store_reg_modify (STACK_POINTER_REGNUM
, 1, actual_fsize
);
3972 /* It is incorrect to store the saved frame pointer at *sp,
3973 then increment sp (writes beyond the current stack boundary).
3975 So instead use stwm to store at *sp and post-increment the
3976 stack pointer as an atomic operation. Then increment sp to
3977 finish allocating the new frame. */
3978 HOST_WIDE_INT adjust1
= 8192 - 64;
3979 HOST_WIDE_INT adjust2
= actual_fsize
- adjust1
;
3981 store_reg_modify (STACK_POINTER_REGNUM
, 1, adjust1
);
3982 set_reg_plus_d (STACK_POINTER_REGNUM
, STACK_POINTER_REGNUM
,
3986 /* We set SAVE_SP in frames that need a frame pointer. Thus,
3987 we need to store the previous stack pointer (frame pointer)
3988 into the frame marker on targets that use the HP unwind
3989 library. This allows the HP unwind library to be used to
3990 unwind GCC frames. However, we are not fully compatible
3991 with the HP library because our frame layout differs from
3992 that specified in the HP runtime specification.
3994 We don't want a frame note on this instruction as the frame
3995 marker moves during dynamic stack allocation.
3997 This instruction also serves as a blockage to prevent
3998 register spills from being scheduled before the stack
3999 pointer is raised. This is necessary as we store
4000 registers using the frame pointer as a base register,
4001 and the frame pointer is set before sp is raised. */
4002 if (TARGET_HPUX_UNWIND_LIBRARY
)
4004 rtx addr
= gen_rtx_PLUS (word_mode
, stack_pointer_rtx
,
4005 GEN_INT (TARGET_64BIT
? -8 : -4));
4007 emit_move_insn (gen_rtx_MEM (word_mode
, addr
),
4008 hard_frame_pointer_rtx
);
4011 emit_insn (gen_blockage ());
4013 /* no frame pointer needed. */
4016 /* In some cases we can perform the first callee register save
4017 and allocating the stack frame at the same time. If so, just
4018 make a note of it and defer allocating the frame until saving
4019 the callee registers. */
4020 if (VAL_14_BITS_P (actual_fsize
) && local_fsize
== 0)
4021 merge_sp_adjust_with_store
= 1;
4022 /* Cannot optimize. Adjust the stack frame by actual_fsize
4025 set_reg_plus_d (STACK_POINTER_REGNUM
, STACK_POINTER_REGNUM
,
4030 /* Normal register save.
4032 Do not save the frame pointer in the frame_pointer_needed case. It
4033 was done earlier. */
4034 if (frame_pointer_needed
)
4036 offset
= local_fsize
;
4038 /* Saving the EH return data registers in the frame is the simplest
4039 way to get the frame unwind information emitted. We put them
4040 just before the general registers. */
4041 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
4043 unsigned int i
, regno
;
4047 regno
= EH_RETURN_DATA_REGNO (i
);
4048 if (regno
== INVALID_REGNUM
)
4051 store_reg (regno
, offset
, HARD_FRAME_POINTER_REGNUM
);
4052 offset
+= UNITS_PER_WORD
;
4056 for (i
= 18; i
>= 4; i
--)
4057 if (df_regs_ever_live_p (i
) && ! call_used_regs
[i
])
4059 store_reg (i
, offset
, HARD_FRAME_POINTER_REGNUM
);
4060 offset
+= UNITS_PER_WORD
;
4063 /* Account for %r3 which is saved in a special place. */
4066 /* No frame pointer needed. */
4069 offset
= local_fsize
- actual_fsize
;
4071 /* Saving the EH return data registers in the frame is the simplest
4072 way to get the frame unwind information emitted. */
4073 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
4075 unsigned int i
, regno
;
4079 regno
= EH_RETURN_DATA_REGNO (i
);
4080 if (regno
== INVALID_REGNUM
)
4083 /* If merge_sp_adjust_with_store is nonzero, then we can
4084 optimize the first save. */
4085 if (merge_sp_adjust_with_store
)
4087 store_reg_modify (STACK_POINTER_REGNUM
, regno
, -offset
);
4088 merge_sp_adjust_with_store
= 0;
4091 store_reg (regno
, offset
, STACK_POINTER_REGNUM
);
4092 offset
+= UNITS_PER_WORD
;
4096 for (i
= 18; i
>= 3; i
--)
4097 if (df_regs_ever_live_p (i
) && ! call_used_regs
[i
])
4099 /* If merge_sp_adjust_with_store is nonzero, then we can
4100 optimize the first GR save. */
4101 if (merge_sp_adjust_with_store
)
4103 store_reg_modify (STACK_POINTER_REGNUM
, i
, -offset
);
4104 merge_sp_adjust_with_store
= 0;
4107 store_reg (i
, offset
, STACK_POINTER_REGNUM
);
4108 offset
+= UNITS_PER_WORD
;
4112 /* If we wanted to merge the SP adjustment with a GR save, but we never
4113 did any GR saves, then just emit the adjustment here. */
4114 if (merge_sp_adjust_with_store
)
4115 set_reg_plus_d (STACK_POINTER_REGNUM
, STACK_POINTER_REGNUM
,
4119 /* The hppa calling conventions say that %r19, the pic offset
4120 register, is saved at sp - 32 (in this function's frame)
4121 when generating PIC code. FIXME: What is the correct thing
4122 to do for functions which make no calls and allocate no
4123 frame? Do we need to allocate a frame, or can we just omit
4124 the save? For now we'll just omit the save.
4126 We don't want a note on this insn as the frame marker can
4127 move if there is a dynamic stack allocation. */
4128 if (flag_pic
&& actual_fsize
!= 0 && !TARGET_64BIT
)
4130 rtx addr
= gen_rtx_PLUS (word_mode
, stack_pointer_rtx
, GEN_INT (-32));
4132 emit_move_insn (gen_rtx_MEM (word_mode
, addr
), pic_offset_table_rtx
);
4136 /* Align pointer properly (doubleword boundary). */
4137 offset
= (offset
+ 7) & ~7;
4139 /* Floating point register store. */
4144 /* First get the frame or stack pointer to the start of the FP register
4146 if (frame_pointer_needed
)
4148 set_reg_plus_d (1, HARD_FRAME_POINTER_REGNUM
, offset
, 0);
4149 base
= hard_frame_pointer_rtx
;
4153 set_reg_plus_d (1, STACK_POINTER_REGNUM
, offset
, 0);
4154 base
= stack_pointer_rtx
;
4157 /* Now actually save the FP registers. */
4158 for (i
= FP_SAVED_REG_LAST
; i
>= FP_SAVED_REG_FIRST
; i
-= FP_REG_STEP
)
4160 if (df_regs_ever_live_p (i
)
4161 || (! TARGET_64BIT
&& df_regs_ever_live_p (i
+ 1)))
4165 addr
= gen_rtx_MEM (DFmode
,
4166 gen_rtx_POST_INC (word_mode
, tmpreg
));
4167 reg
= gen_rtx_REG (DFmode
, i
);
4168 insn
= emit_move_insn (addr
, reg
);
4171 RTX_FRAME_RELATED_P (insn
) = 1;
4174 rtx mem
= gen_rtx_MEM (DFmode
,
4175 plus_constant (Pmode
, base
,
4177 add_reg_note (insn
, REG_FRAME_RELATED_EXPR
,
4178 gen_rtx_SET (mem
, reg
));
4182 rtx meml
= gen_rtx_MEM (SFmode
,
4183 plus_constant (Pmode
, base
,
4185 rtx memr
= gen_rtx_MEM (SFmode
,
4186 plus_constant (Pmode
, base
,
4188 rtx regl
= gen_rtx_REG (SFmode
, i
);
4189 rtx regr
= gen_rtx_REG (SFmode
, i
+ 1);
4190 rtx setl
= gen_rtx_SET (meml
, regl
);
4191 rtx setr
= gen_rtx_SET (memr
, regr
);
4194 RTX_FRAME_RELATED_P (setl
) = 1;
4195 RTX_FRAME_RELATED_P (setr
) = 1;
4196 vec
= gen_rtvec (2, setl
, setr
);
4197 add_reg_note (insn
, REG_FRAME_RELATED_EXPR
,
4198 gen_rtx_SEQUENCE (VOIDmode
, vec
));
4201 offset
+= GET_MODE_SIZE (DFmode
);
4208 /* Emit RTL to load REG from the memory location specified by BASE+DISP.
4209 Handle case where DISP > 8k by using the add_high_const patterns. */
4212 load_reg (int reg
, HOST_WIDE_INT disp
, int base
)
4214 rtx dest
= gen_rtx_REG (word_mode
, reg
);
4215 rtx basereg
= gen_rtx_REG (Pmode
, base
);
4218 if (VAL_14_BITS_P (disp
))
4219 src
= gen_rtx_MEM (word_mode
, plus_constant (Pmode
, basereg
, disp
));
4220 else if (TARGET_64BIT
&& !VAL_32_BITS_P (disp
))
4222 rtx delta
= GEN_INT (disp
);
4223 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
4225 emit_move_insn (tmpreg
, delta
);
4226 if (TARGET_DISABLE_INDEXING
)
4228 emit_move_insn (tmpreg
, gen_rtx_PLUS (Pmode
, tmpreg
, basereg
));
4229 src
= gen_rtx_MEM (word_mode
, tmpreg
);
4232 src
= gen_rtx_MEM (word_mode
, gen_rtx_PLUS (Pmode
, tmpreg
, basereg
));
4236 rtx delta
= GEN_INT (disp
);
4237 rtx high
= gen_rtx_PLUS (Pmode
, basereg
, gen_rtx_HIGH (Pmode
, delta
));
4238 rtx tmpreg
= gen_rtx_REG (Pmode
, 1);
4240 emit_move_insn (tmpreg
, high
);
4241 src
= gen_rtx_MEM (word_mode
, gen_rtx_LO_SUM (Pmode
, tmpreg
, delta
));
4244 emit_move_insn (dest
, src
);
4247 /* Update the total code bytes output to the text section. */
4250 update_total_code_bytes (unsigned int nbytes
)
4252 if ((TARGET_PORTABLE_RUNTIME
|| !TARGET_GAS
|| !TARGET_SOM
)
4253 && !IN_NAMED_SECTION_P (cfun
->decl
))
4255 unsigned int old_total
= total_code_bytes
;
4257 total_code_bytes
+= nbytes
;
4259 /* Be prepared to handle overflows. */
4260 if (old_total
> total_code_bytes
)
4261 total_code_bytes
= UINT_MAX
;
4265 /* This function generates the assembly code for function exit.
4266 Args are as for output_function_prologue ().
4268 The function epilogue should not depend on the current stack
4269 pointer! It should use the frame pointer only. This is mandatory
4270 because of alloca; we also take advantage of it to omit stack
4271 adjustments before returning. */
4274 pa_output_function_epilogue (FILE *file
)
4276 rtx_insn
*insn
= get_last_insn ();
4279 /* pa_expand_epilogue does the dirty work now. We just need
4280 to output the assembler directives which denote the end
4283 To make debuggers happy, emit a nop if the epilogue was completely
4284 eliminated due to a volatile call as the last insn in the
4285 current function. That way the return address (in %r2) will
4286 always point to a valid instruction in the current function. */
4288 /* Get the last real insn. */
4290 insn
= prev_real_insn (insn
);
4292 /* If it is a sequence, then look inside. */
4293 if (insn
&& NONJUMP_INSN_P (insn
) && GET_CODE (PATTERN (insn
)) == SEQUENCE
)
4294 insn
= as_a
<rtx_sequence
*> (PATTERN (insn
))-> insn (0);
4296 /* If insn is a CALL_INSN, then it must be a call to a volatile
4297 function (otherwise there would be epilogue insns). */
4298 if (insn
&& CALL_P (insn
))
4300 fputs ("\tnop\n", file
);
4306 fputs ("\t.EXIT\n\t.PROCEND\n", file
);
4308 if (TARGET_SOM
&& TARGET_GAS
)
4310 /* We are done with this subspace except possibly for some additional
4311 debug information. Forget that we are in this subspace to ensure
4312 that the next function is output in its own subspace. */
4314 cfun
->machine
->in_nsubspa
= 2;
4317 /* Thunks do their own insn accounting. */
4321 if (INSN_ADDRESSES_SET_P ())
4323 last_address
= extra_nop
? 4 : 0;
4324 insn
= get_last_nonnote_insn ();
4327 last_address
+= INSN_ADDRESSES (INSN_UID (insn
));
4329 last_address
+= insn_default_length (insn
);
4331 last_address
= ((last_address
+ FUNCTION_BOUNDARY
/ BITS_PER_UNIT
- 1)
4332 & ~(FUNCTION_BOUNDARY
/ BITS_PER_UNIT
- 1));
4335 last_address
= UINT_MAX
;
4337 /* Finally, update the total number of code bytes output so far. */
4338 update_total_code_bytes (last_address
);
4342 pa_expand_epilogue (void)
4345 HOST_WIDE_INT offset
;
4346 HOST_WIDE_INT ret_off
= 0;
4348 int merge_sp_adjust_with_load
= 0;
4350 /* We will use this often. */
4351 tmpreg
= gen_rtx_REG (word_mode
, 1);
4353 /* Try to restore RP early to avoid load/use interlocks when
4354 RP gets used in the return (bv) instruction. This appears to still
4355 be necessary even when we schedule the prologue and epilogue. */
4358 ret_off
= TARGET_64BIT
? -16 : -20;
4359 if (frame_pointer_needed
)
4361 load_reg (2, ret_off
, HARD_FRAME_POINTER_REGNUM
);
4366 /* No frame pointer, and stack is smaller than 8k. */
4367 if (VAL_14_BITS_P (ret_off
- actual_fsize
))
4369 load_reg (2, ret_off
- actual_fsize
, STACK_POINTER_REGNUM
);
4375 /* General register restores. */
4376 if (frame_pointer_needed
)
4378 offset
= local_fsize
;
4380 /* If the current function calls __builtin_eh_return, then we need
4381 to restore the saved EH data registers. */
4382 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
4384 unsigned int i
, regno
;
4388 regno
= EH_RETURN_DATA_REGNO (i
);
4389 if (regno
== INVALID_REGNUM
)
4392 load_reg (regno
, offset
, HARD_FRAME_POINTER_REGNUM
);
4393 offset
+= UNITS_PER_WORD
;
4397 for (i
= 18; i
>= 4; i
--)
4398 if (df_regs_ever_live_p (i
) && ! call_used_regs
[i
])
4400 load_reg (i
, offset
, HARD_FRAME_POINTER_REGNUM
);
4401 offset
+= UNITS_PER_WORD
;
4406 offset
= local_fsize
- actual_fsize
;
4408 /* If the current function calls __builtin_eh_return, then we need
4409 to restore the saved EH data registers. */
4410 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
4412 unsigned int i
, regno
;
4416 regno
= EH_RETURN_DATA_REGNO (i
);
4417 if (regno
== INVALID_REGNUM
)
4420 /* Only for the first load.
4421 merge_sp_adjust_with_load holds the register load
4422 with which we will merge the sp adjustment. */
4423 if (merge_sp_adjust_with_load
== 0
4425 && VAL_14_BITS_P (-actual_fsize
))
4426 merge_sp_adjust_with_load
= regno
;
4428 load_reg (regno
, offset
, STACK_POINTER_REGNUM
);
4429 offset
+= UNITS_PER_WORD
;
4433 for (i
= 18; i
>= 3; i
--)
4435 if (df_regs_ever_live_p (i
) && ! call_used_regs
[i
])
4437 /* Only for the first load.
4438 merge_sp_adjust_with_load holds the register load
4439 with which we will merge the sp adjustment. */
4440 if (merge_sp_adjust_with_load
== 0
4442 && VAL_14_BITS_P (-actual_fsize
))
4443 merge_sp_adjust_with_load
= i
;
4445 load_reg (i
, offset
, STACK_POINTER_REGNUM
);
4446 offset
+= UNITS_PER_WORD
;
4451 /* Align pointer properly (doubleword boundary). */
4452 offset
= (offset
+ 7) & ~7;
4454 /* FP register restores. */
4457 /* Adjust the register to index off of. */
4458 if (frame_pointer_needed
)
4459 set_reg_plus_d (1, HARD_FRAME_POINTER_REGNUM
, offset
, 0);
4461 set_reg_plus_d (1, STACK_POINTER_REGNUM
, offset
, 0);
4463 /* Actually do the restores now. */
4464 for (i
= FP_SAVED_REG_LAST
; i
>= FP_SAVED_REG_FIRST
; i
-= FP_REG_STEP
)
4465 if (df_regs_ever_live_p (i
)
4466 || (! TARGET_64BIT
&& df_regs_ever_live_p (i
+ 1)))
4468 rtx src
= gen_rtx_MEM (DFmode
,
4469 gen_rtx_POST_INC (word_mode
, tmpreg
));
4470 rtx dest
= gen_rtx_REG (DFmode
, i
);
4471 emit_move_insn (dest
, src
);
4475 /* Emit a blockage insn here to keep these insns from being moved to
4476 an earlier spot in the epilogue, or into the main instruction stream.
4478 This is necessary as we must not cut the stack back before all the
4479 restores are finished. */
4480 emit_insn (gen_blockage ());
4482 /* Reset stack pointer (and possibly frame pointer). The stack
4483 pointer is initially set to fp + 64 to avoid a race condition. */
4484 if (frame_pointer_needed
)
4486 rtx delta
= GEN_INT (-64);
4488 set_reg_plus_d (STACK_POINTER_REGNUM
, HARD_FRAME_POINTER_REGNUM
, 64, 0);
4489 emit_insn (gen_pre_load (hard_frame_pointer_rtx
,
4490 stack_pointer_rtx
, delta
));
4492 /* If we were deferring a callee register restore, do it now. */
4493 else if (merge_sp_adjust_with_load
)
4495 rtx delta
= GEN_INT (-actual_fsize
);
4496 rtx dest
= gen_rtx_REG (word_mode
, merge_sp_adjust_with_load
);
4498 emit_insn (gen_pre_load (dest
, stack_pointer_rtx
, delta
));
4500 else if (actual_fsize
!= 0)
4501 set_reg_plus_d (STACK_POINTER_REGNUM
, STACK_POINTER_REGNUM
,
4504 /* If we haven't restored %r2 yet (no frame pointer, and a stack
4505 frame greater than 8k), do so now. */
4507 load_reg (2, ret_off
, STACK_POINTER_REGNUM
);
4509 if (DO_FRAME_NOTES
&& crtl
->calls_eh_return
)
4511 rtx sa
= EH_RETURN_STACKADJ_RTX
;
4513 emit_insn (gen_blockage ());
4514 emit_insn (TARGET_64BIT
4515 ? gen_subdi3 (stack_pointer_rtx
, stack_pointer_rtx
, sa
)
4516 : gen_subsi3 (stack_pointer_rtx
, stack_pointer_rtx
, sa
));
4521 pa_can_use_return_insn (void)
4523 if (!reload_completed
)
4526 if (frame_pointer_needed
)
4529 if (df_regs_ever_live_p (2))
4535 return pa_compute_frame_size (get_frame_size (), 0) == 0;
4539 hppa_pic_save_rtx (void)
4541 return get_hard_reg_initial_val (word_mode
, PIC_OFFSET_TABLE_REGNUM
);
4544 #ifndef NO_DEFERRED_PROFILE_COUNTERS
4545 #define NO_DEFERRED_PROFILE_COUNTERS 0
4549 /* Vector of funcdef numbers. */
4550 static vec
<int> funcdef_nos
;
4552 /* Output deferred profile counters. */
4554 output_deferred_profile_counters (void)
4559 if (funcdef_nos
.is_empty ())
4562 switch_to_section (data_section
);
4563 align
= MIN (BIGGEST_ALIGNMENT
, LONG_TYPE_SIZE
);
4564 ASM_OUTPUT_ALIGN (asm_out_file
, floor_log2 (align
/ BITS_PER_UNIT
));
4566 for (i
= 0; funcdef_nos
.iterate (i
, &n
); i
++)
4568 targetm
.asm_out
.internal_label (asm_out_file
, "LP", n
);
4569 assemble_integer (const0_rtx
, LONG_TYPE_SIZE
/ BITS_PER_UNIT
, align
, 1);
4572 funcdef_nos
.release ();
4576 hppa_profile_hook (int label_no
)
4578 rtx_code_label
*label_rtx
= gen_label_rtx ();
4579 int reg_parm_stack_space
= REG_PARM_STACK_SPACE (NULL_TREE
);
4580 rtx arg_bytes
, begin_label_rtx
, mcount
, sym
;
4581 rtx_insn
*call_insn
;
4582 char begin_label_name
[16];
4583 bool use_mcount_pcrel_call
;
4585 /* Set up call destination. */
4586 sym
= gen_rtx_SYMBOL_REF (Pmode
, "_mcount");
4587 pa_encode_label (sym
);
4588 mcount
= gen_rtx_MEM (Pmode
, sym
);
4590 /* If we can reach _mcount with a pc-relative call, we can optimize
4591 loading the address of the current function. This requires linker
4592 long branch stub support. */
4593 if (!TARGET_PORTABLE_RUNTIME
4594 && !TARGET_LONG_CALLS
4595 && (TARGET_SOM
|| flag_function_sections
))
4596 use_mcount_pcrel_call
= TRUE
;
4598 use_mcount_pcrel_call
= FALSE
;
4600 ASM_GENERATE_INTERNAL_LABEL (begin_label_name
, FUNC_BEGIN_PROLOG_LABEL
,
4602 begin_label_rtx
= gen_rtx_SYMBOL_REF (SImode
, ggc_strdup (begin_label_name
));
4604 emit_move_insn (gen_rtx_REG (word_mode
, 26), gen_rtx_REG (word_mode
, 2));
4606 if (!use_mcount_pcrel_call
)
4608 /* The address of the function is loaded into %r25 with an instruction-
4609 relative sequence that avoids the use of relocations. We use SImode
4610 for the address of the function in both 32 and 64-bit code to avoid
4611 having to provide DImode versions of the lcla2 pattern. */
4613 emit_insn (gen_lcla2 (gen_rtx_REG (SImode
, 25), label_rtx
));
4615 emit_insn (gen_lcla1 (gen_rtx_REG (SImode
, 25), label_rtx
));
4618 if (!NO_DEFERRED_PROFILE_COUNTERS
)
4620 rtx count_label_rtx
, addr
, r24
;
4621 char count_label_name
[16];
4623 funcdef_nos
.safe_push (label_no
);
4624 ASM_GENERATE_INTERNAL_LABEL (count_label_name
, "LP", label_no
);
4625 count_label_rtx
= gen_rtx_SYMBOL_REF (Pmode
,
4626 ggc_strdup (count_label_name
));
4628 addr
= force_reg (Pmode
, count_label_rtx
);
4629 r24
= gen_rtx_REG (Pmode
, 24);
4630 emit_move_insn (r24
, addr
);
4632 arg_bytes
= GEN_INT (TARGET_64BIT
? 24 : 12);
4633 if (use_mcount_pcrel_call
)
4634 call_insn
= emit_call_insn (gen_call_mcount (mcount
, arg_bytes
,
4637 call_insn
= emit_call_insn (gen_call (mcount
, arg_bytes
));
4639 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn
), r24
);
4643 arg_bytes
= GEN_INT (TARGET_64BIT
? 16 : 8);
4644 if (use_mcount_pcrel_call
)
4645 call_insn
= emit_call_insn (gen_call_mcount (mcount
, arg_bytes
,
4648 call_insn
= emit_call_insn (gen_call (mcount
, arg_bytes
));
4651 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn
), gen_rtx_REG (SImode
, 25));
4652 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn
), gen_rtx_REG (SImode
, 26));
4654 /* Indicate the _mcount call cannot throw, nor will it execute a
4656 make_reg_eh_region_note_nothrow_nononlocal (call_insn
);
4658 /* Allocate space for fixed arguments. */
4659 if (reg_parm_stack_space
> crtl
->outgoing_args_size
)
4660 crtl
->outgoing_args_size
= reg_parm_stack_space
;
4663 /* Fetch the return address for the frame COUNT steps up from
4664 the current frame, after the prologue. FRAMEADDR is the
4665 frame pointer of the COUNT frame.
4667 We want to ignore any export stub remnants here. To handle this,
4668 we examine the code at the return address, and if it is an export
4669 stub, we return a memory rtx for the stub return address stored
4672 The value returned is used in two different ways:
4674 1. To find a function's caller.
4676 2. To change the return address for a function.
4678 This function handles most instances of case 1; however, it will
4679 fail if there are two levels of stubs to execute on the return
4680 path. The only way I believe that can happen is if the return value
4681 needs a parameter relocation, which never happens for C code.
4683 This function handles most instances of case 2; however, it will
4684 fail if we did not originally have stub code on the return path
4685 but will need stub code on the new return path. This can happen if
4686 the caller & callee are both in the main program, but the new
4687 return location is in a shared library. */
4690 pa_return_addr_rtx (int count
, rtx frameaddr
)
4697 /* The instruction stream at the return address of a PA1.X export stub is:
4699 0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp
4700 0x004010a1 | stub+12: ldsid (sr0,rp),r1
4701 0x00011820 | stub+16: mtsp r1,sr0
4702 0xe0400002 | stub+20: be,n 0(sr0,rp)
4704 0xe0400002 must be specified as -532676606 so that it won't be
4705 rejected as an invalid immediate operand on 64-bit hosts.
4707 The instruction stream at the return address of a PA2.0 export stub is:
4709 0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp
4710 0xe840d002 | stub+12: bve,n (rp)
4713 HOST_WIDE_INT insns
[4];
4719 rp
= get_hard_reg_initial_val (Pmode
, 2);
4721 if (TARGET_64BIT
|| TARGET_NO_SPACE_REGS
)
4724 /* If there is no export stub then just use the value saved from
4725 the return pointer register. */
4727 saved_rp
= gen_reg_rtx (Pmode
);
4728 emit_move_insn (saved_rp
, rp
);
4730 /* Get pointer to the instruction stream. We have to mask out the
4731 privilege level from the two low order bits of the return address
4732 pointer here so that ins will point to the start of the first
4733 instruction that would have been executed if we returned. */
4734 ins
= copy_to_reg (gen_rtx_AND (Pmode
, rp
, MASK_RETURN_ADDR
));
4735 label
= gen_label_rtx ();
4739 insns
[0] = 0x4bc23fd1;
4740 insns
[1] = -398405630;
4745 insns
[0] = 0x4bc23fd1;
4746 insns
[1] = 0x004010a1;
4747 insns
[2] = 0x00011820;
4748 insns
[3] = -532676606;
4752 /* Check the instruction stream at the normal return address for the
4753 export stub. If it is an export stub, than our return address is
4754 really in -24[frameaddr]. */
4756 for (i
= 0; i
< len
; i
++)
4758 rtx op0
= gen_rtx_MEM (SImode
, plus_constant (Pmode
, ins
, i
* 4));
4759 rtx op1
= GEN_INT (insns
[i
]);
4760 emit_cmp_and_jump_insns (op0
, op1
, NE
, NULL
, SImode
, 0, label
);
4763 /* Here we know that our return address points to an export
4764 stub. We don't want to return the address of the export stub,
4765 but rather the return address of the export stub. That return
4766 address is stored at -24[frameaddr]. */
4768 emit_move_insn (saved_rp
,
4770 memory_address (Pmode
,
4771 plus_constant (Pmode
, frameaddr
,
4780 pa_emit_bcond_fp (rtx operands
[])
4782 enum rtx_code code
= GET_CODE (operands
[0]);
4783 rtx operand0
= operands
[1];
4784 rtx operand1
= operands
[2];
4785 rtx label
= operands
[3];
4787 emit_insn (gen_rtx_SET (gen_rtx_REG (CCFPmode
, 0),
4788 gen_rtx_fmt_ee (code
, CCFPmode
, operand0
, operand1
)));
4790 emit_jump_insn (gen_rtx_SET (pc_rtx
,
4791 gen_rtx_IF_THEN_ELSE (VOIDmode
,
4794 gen_rtx_REG (CCFPmode
, 0),
4796 gen_rtx_LABEL_REF (VOIDmode
, label
),
4801 /* Adjust the cost of a scheduling dependency. Return the new cost of
4802 a dependency LINK or INSN on DEP_INSN. COST is the current cost. */
4805 pa_adjust_cost (rtx_insn
*insn
, int dep_type
, rtx_insn
*dep_insn
, int cost
,
4808 enum attr_type attr_type
;
4810 /* Don't adjust costs for a pa8000 chip, also do not adjust any
4811 true dependencies as they are described with bypasses now. */
4812 if (pa_cpu
>= PROCESSOR_8000
|| dep_type
== 0)
4815 if (! recog_memoized (insn
))
4818 attr_type
= get_attr_type (insn
);
4823 /* Anti dependency; DEP_INSN reads a register that INSN writes some
4826 if (attr_type
== TYPE_FPLOAD
)
4828 rtx pat
= PATTERN (insn
);
4829 rtx dep_pat
= PATTERN (dep_insn
);
4830 if (GET_CODE (pat
) == PARALLEL
)
4832 /* This happens for the fldXs,mb patterns. */
4833 pat
= XVECEXP (pat
, 0, 0);
4835 if (GET_CODE (pat
) != SET
|| GET_CODE (dep_pat
) != SET
)
4836 /* If this happens, we have to extend this to schedule
4837 optimally. Return 0 for now. */
4840 if (reg_mentioned_p (SET_DEST (pat
), SET_SRC (dep_pat
)))
4842 if (! recog_memoized (dep_insn
))
4844 switch (get_attr_type (dep_insn
))
4851 case TYPE_FPSQRTSGL
:
4852 case TYPE_FPSQRTDBL
:
4853 /* A fpload can't be issued until one cycle before a
4854 preceding arithmetic operation has finished if
4855 the target of the fpload is any of the sources
4856 (or destination) of the arithmetic operation. */
4857 return insn_default_latency (dep_insn
) - 1;
4864 else if (attr_type
== TYPE_FPALU
)
4866 rtx pat
= PATTERN (insn
);
4867 rtx dep_pat
= PATTERN (dep_insn
);
4868 if (GET_CODE (pat
) == PARALLEL
)
4870 /* This happens for the fldXs,mb patterns. */
4871 pat
= XVECEXP (pat
, 0, 0);
4873 if (GET_CODE (pat
) != SET
|| GET_CODE (dep_pat
) != SET
)
4874 /* If this happens, we have to extend this to schedule
4875 optimally. Return 0 for now. */
4878 if (reg_mentioned_p (SET_DEST (pat
), SET_SRC (dep_pat
)))
4880 if (! recog_memoized (dep_insn
))
4882 switch (get_attr_type (dep_insn
))
4886 case TYPE_FPSQRTSGL
:
4887 case TYPE_FPSQRTDBL
:
4888 /* An ALU flop can't be issued until two cycles before a
4889 preceding divide or sqrt operation has finished if
4890 the target of the ALU flop is any of the sources
4891 (or destination) of the divide or sqrt operation. */
4892 return insn_default_latency (dep_insn
) - 2;
4900 /* For other anti dependencies, the cost is 0. */
4903 case REG_DEP_OUTPUT
:
4904 /* Output dependency; DEP_INSN writes a register that INSN writes some
4906 if (attr_type
== TYPE_FPLOAD
)
4908 rtx pat
= PATTERN (insn
);
4909 rtx dep_pat
= PATTERN (dep_insn
);
4910 if (GET_CODE (pat
) == PARALLEL
)
4912 /* This happens for the fldXs,mb patterns. */
4913 pat
= XVECEXP (pat
, 0, 0);
4915 if (GET_CODE (pat
) != SET
|| GET_CODE (dep_pat
) != SET
)
4916 /* If this happens, we have to extend this to schedule
4917 optimally. Return 0 for now. */
4920 if (reg_mentioned_p (SET_DEST (pat
), SET_DEST (dep_pat
)))
4922 if (! recog_memoized (dep_insn
))
4924 switch (get_attr_type (dep_insn
))
4931 case TYPE_FPSQRTSGL
:
4932 case TYPE_FPSQRTDBL
:
4933 /* A fpload can't be issued until one cycle before a
4934 preceding arithmetic operation has finished if
4935 the target of the fpload is the destination of the
4936 arithmetic operation.
4938 Exception: For PA7100LC, PA7200 and PA7300, the cost
4939 is 3 cycles, unless they bundle together. We also
4940 pay the penalty if the second insn is a fpload. */
4941 return insn_default_latency (dep_insn
) - 1;
4948 else if (attr_type
== TYPE_FPALU
)
4950 rtx pat
= PATTERN (insn
);
4951 rtx dep_pat
= PATTERN (dep_insn
);
4952 if (GET_CODE (pat
) == PARALLEL
)
4954 /* This happens for the fldXs,mb patterns. */
4955 pat
= XVECEXP (pat
, 0, 0);
4957 if (GET_CODE (pat
) != SET
|| GET_CODE (dep_pat
) != SET
)
4958 /* If this happens, we have to extend this to schedule
4959 optimally. Return 0 for now. */
4962 if (reg_mentioned_p (SET_DEST (pat
), SET_DEST (dep_pat
)))
4964 if (! recog_memoized (dep_insn
))
4966 switch (get_attr_type (dep_insn
))
4970 case TYPE_FPSQRTSGL
:
4971 case TYPE_FPSQRTDBL
:
4972 /* An ALU flop can't be issued until two cycles before a
4973 preceding divide or sqrt operation has finished if
4974 the target of the ALU flop is also the target of
4975 the divide or sqrt operation. */
4976 return insn_default_latency (dep_insn
) - 2;
4984 /* For other output dependencies, the cost is 0. */
4992 /* The 700 can only issue a single insn at a time.
4993 The 7XXX processors can issue two insns at a time.
4994 The 8000 can issue 4 insns at a time. */
4996 pa_issue_rate (void)
5000 case PROCESSOR_700
: return 1;
5001 case PROCESSOR_7100
: return 2;
5002 case PROCESSOR_7100LC
: return 2;
5003 case PROCESSOR_7200
: return 2;
5004 case PROCESSOR_7300
: return 2;
5005 case PROCESSOR_8000
: return 4;
5014 /* Return any length plus adjustment needed by INSN which already has
5015 its length computed as LENGTH. Return LENGTH if no adjustment is
5018 Also compute the length of an inline block move here as it is too
5019 complicated to express as a length attribute in pa.md. */
5021 pa_adjust_insn_length (rtx_insn
*insn
, int length
)
5023 rtx pat
= PATTERN (insn
);
5025 /* If length is negative or undefined, provide initial length. */
5026 if ((unsigned int) length
>= INT_MAX
)
5028 if (GET_CODE (pat
) == SEQUENCE
)
5029 insn
= as_a
<rtx_insn
*> (XVECEXP (pat
, 0, 0));
5031 switch (get_attr_type (insn
))
5034 length
= pa_attr_length_millicode_call (insn
);
5037 length
= pa_attr_length_call (insn
, 0);
5040 length
= pa_attr_length_call (insn
, 1);
5043 length
= pa_attr_length_indirect_call (insn
);
5045 case TYPE_SH_FUNC_ADRS
:
5046 length
= pa_attr_length_millicode_call (insn
) + 20;
5053 /* Block move pattern. */
5054 if (NONJUMP_INSN_P (insn
)
5055 && GET_CODE (pat
) == PARALLEL
5056 && GET_CODE (XVECEXP (pat
, 0, 0)) == SET
5057 && GET_CODE (XEXP (XVECEXP (pat
, 0, 0), 0)) == MEM
5058 && GET_CODE (XEXP (XVECEXP (pat
, 0, 0), 1)) == MEM
5059 && GET_MODE (XEXP (XVECEXP (pat
, 0, 0), 0)) == BLKmode
5060 && GET_MODE (XEXP (XVECEXP (pat
, 0, 0), 1)) == BLKmode
)
5061 length
+= compute_cpymem_length (insn
) - 4;
5062 /* Block clear pattern. */
5063 else if (NONJUMP_INSN_P (insn
)
5064 && GET_CODE (pat
) == PARALLEL
5065 && GET_CODE (XVECEXP (pat
, 0, 0)) == SET
5066 && GET_CODE (XEXP (XVECEXP (pat
, 0, 0), 0)) == MEM
5067 && XEXP (XVECEXP (pat
, 0, 0), 1) == const0_rtx
5068 && GET_MODE (XEXP (XVECEXP (pat
, 0, 0), 0)) == BLKmode
)
5069 length
+= compute_clrmem_length (insn
) - 4;
5070 /* Conditional branch with an unfilled delay slot. */
5071 else if (JUMP_P (insn
) && ! simplejump_p (insn
))
5073 /* Adjust a short backwards conditional with an unfilled delay slot. */
5074 if (GET_CODE (pat
) == SET
5076 && JUMP_LABEL (insn
) != NULL_RTX
5077 && ! forward_branch_p (insn
))
5079 else if (GET_CODE (pat
) == PARALLEL
5080 && get_attr_type (insn
) == TYPE_PARALLEL_BRANCH
5083 /* Adjust dbra insn with short backwards conditional branch with
5084 unfilled delay slot -- only for case where counter is in a
5085 general register register. */
5086 else if (GET_CODE (pat
) == PARALLEL
5087 && GET_CODE (XVECEXP (pat
, 0, 1)) == SET
5088 && GET_CODE (XEXP (XVECEXP (pat
, 0, 1), 0)) == REG
5089 && ! FP_REG_P (XEXP (XVECEXP (pat
, 0, 1), 0))
5091 && ! forward_branch_p (insn
))
5097 /* Implement the TARGET_PRINT_OPERAND_PUNCT_VALID_P hook. */
5100 pa_print_operand_punct_valid_p (unsigned char code
)
5111 /* Print operand X (an rtx) in assembler syntax to file FILE.
5112 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
5113 For `%' followed by punctuation, CODE is the punctuation and X is null. */
5116 pa_print_operand (FILE *file
, rtx x
, int code
)
5121 /* Output a 'nop' if there's nothing for the delay slot. */
5122 if (dbr_sequence_length () == 0)
5123 fputs ("\n\tnop", file
);
5126 /* Output a nullification completer if there's nothing for the */
5127 /* delay slot or nullification is requested. */
5128 if (dbr_sequence_length () == 0 ||
5130 INSN_ANNULLED_BRANCH_P (XVECEXP (final_sequence
, 0, 0))))
5134 /* Print out the second register name of a register pair.
5135 I.e., R (6) => 7. */
5136 fputs (reg_names
[REGNO (x
) + 1], file
);
5139 /* A register or zero. */
5141 || (x
== CONST0_RTX (DFmode
))
5142 || (x
== CONST0_RTX (SFmode
)))
5144 fputs ("%r0", file
);
5150 /* A register or zero (floating point). */
5152 || (x
== CONST0_RTX (DFmode
))
5153 || (x
== CONST0_RTX (SFmode
)))
5155 fputs ("%fr0", file
);
5164 xoperands
[0] = XEXP (XEXP (x
, 0), 0);
5165 xoperands
[1] = XVECEXP (XEXP (XEXP (x
, 0), 1), 0, 0);
5166 pa_output_global_address (file
, xoperands
[1], 0);
5167 fprintf (file
, "(%s)", reg_names
[REGNO (xoperands
[0])]);
5171 case 'C': /* Plain (C)ondition */
5173 switch (GET_CODE (x
))
5176 fputs ("=", file
); break;
5178 fputs ("<>", file
); break;
5180 fputs (">", file
); break;
5182 fputs (">=", file
); break;
5184 fputs (">>=", file
); break;
5186 fputs (">>", file
); break;
5188 fputs ("<", file
); break;
5190 fputs ("<=", file
); break;
5192 fputs ("<<=", file
); break;
5194 fputs ("<<", file
); break;
5199 case 'N': /* Condition, (N)egated */
5200 switch (GET_CODE (x
))
5203 fputs ("<>", file
); break;
5205 fputs ("=", file
); break;
5207 fputs ("<=", file
); break;
5209 fputs ("<", file
); break;
5211 fputs ("<<", file
); break;
5213 fputs ("<<=", file
); break;
5215 fputs (">=", file
); break;
5217 fputs (">", file
); break;
5219 fputs (">>", file
); break;
5221 fputs (">>=", file
); break;
5226 /* For floating point comparisons. Note that the output
5227 predicates are the complement of the desired mode. The
5228 conditions for GT, GE, LT, LE and LTGT cause an invalid
5229 operation exception if the result is unordered and this
5230 exception is enabled in the floating-point status register. */
5232 switch (GET_CODE (x
))
5235 fputs ("!=", file
); break;
5237 fputs ("=", file
); break;
5239 fputs ("!>", file
); break;
5241 fputs ("!>=", file
); break;
5243 fputs ("!<", file
); break;
5245 fputs ("!<=", file
); break;
5247 fputs ("!<>", file
); break;
5249 fputs ("!?<=", file
); break;
5251 fputs ("!?<", file
); break;
5253 fputs ("!?>=", file
); break;
5255 fputs ("!?>", file
); break;
5257 fputs ("!?=", file
); break;
5259 fputs ("!?", file
); break;
5261 fputs ("?", file
); break;
5266 case 'S': /* Condition, operands are (S)wapped. */
5267 switch (GET_CODE (x
))
5270 fputs ("=", file
); break;
5272 fputs ("<>", file
); break;
5274 fputs ("<", file
); break;
5276 fputs ("<=", file
); break;
5278 fputs ("<<=", file
); break;
5280 fputs ("<<", file
); break;
5282 fputs (">", file
); break;
5284 fputs (">=", file
); break;
5286 fputs (">>=", file
); break;
5288 fputs (">>", file
); break;
5293 case 'B': /* Condition, (B)oth swapped and negate. */
5294 switch (GET_CODE (x
))
5297 fputs ("<>", file
); break;
5299 fputs ("=", file
); break;
5301 fputs (">=", file
); break;
5303 fputs (">", file
); break;
5305 fputs (">>", file
); break;
5307 fputs (">>=", file
); break;
5309 fputs ("<=", file
); break;
5311 fputs ("<", file
); break;
5313 fputs ("<<", file
); break;
5315 fputs ("<<=", file
); break;
5321 gcc_assert (GET_CODE (x
) == CONST_INT
);
5322 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, ~INTVAL (x
));
5325 gcc_assert (GET_CODE (x
) == CONST_INT
);
5326 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, 64 - (INTVAL (x
) & 63));
5329 gcc_assert (GET_CODE (x
) == CONST_INT
);
5330 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, 32 - (INTVAL (x
) & 31));
5333 gcc_assert (GET_CODE (x
) == CONST_INT
5334 && (INTVAL (x
) == 1 || INTVAL (x
) == 2 || INTVAL (x
) == 3));
5335 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, INTVAL (x
));
5338 gcc_assert (GET_CODE (x
) == CONST_INT
&& exact_log2 (INTVAL (x
)) >= 0);
5339 fprintf (file
, "%d", exact_log2 (INTVAL (x
)));
5342 gcc_assert (GET_CODE (x
) == CONST_INT
);
5343 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, 63 - (INTVAL (x
) & 63));
5346 gcc_assert (GET_CODE (x
) == CONST_INT
);
5347 fprintf (file
, HOST_WIDE_INT_PRINT_DEC
, 31 - (INTVAL (x
) & 31));
5350 if (GET_CODE (x
) == CONST_INT
)
5355 switch (GET_CODE (XEXP (x
, 0)))
5359 if (ASSEMBLER_DIALECT
== 0)
5360 fputs ("s,mb", file
);
5362 fputs (",mb", file
);
5366 if (ASSEMBLER_DIALECT
== 0)
5367 fputs ("s,ma", file
);
5369 fputs (",ma", file
);
5372 if (GET_CODE (XEXP (XEXP (x
, 0), 0)) == REG
5373 && GET_CODE (XEXP (XEXP (x
, 0), 1)) == REG
)
5375 if (ASSEMBLER_DIALECT
== 0)
5378 else if (GET_CODE (XEXP (XEXP (x
, 0), 0)) == MULT
5379 || GET_CODE (XEXP (XEXP (x
, 0), 1)) == MULT
)
5381 if (ASSEMBLER_DIALECT
== 0)
5382 fputs ("x,s", file
);
5386 else if (code
== 'F' && ASSEMBLER_DIALECT
== 0)
5390 if (code
== 'F' && ASSEMBLER_DIALECT
== 0)
5396 pa_output_global_address (file
, x
, 0);
5399 pa_output_global_address (file
, x
, 1);
5401 case 0: /* Don't do anything special */
5406 compute_zdepwi_operands (INTVAL (x
), op
);
5407 fprintf (file
, "%d,%d,%d", op
[0], op
[1], op
[2]);
5413 compute_zdepdi_operands (INTVAL (x
), op
);
5414 fprintf (file
, "%d,%d,%d", op
[0], op
[1], op
[2]);
5418 /* We can get here from a .vtable_inherit due to our
5419 CONSTANT_ADDRESS_P rejecting perfectly good constant
5425 if (GET_CODE (x
) == REG
)
5427 fputs (reg_names
[REGNO (x
)], file
);
5428 if (TARGET_64BIT
&& FP_REG_P (x
) && GET_MODE_SIZE (GET_MODE (x
)) <= 4)
5434 && GET_MODE_SIZE (GET_MODE (x
)) <= 4
5435 && (REGNO (x
) & 1) == 0)
5438 else if (GET_CODE (x
) == MEM
)
5440 int size
= GET_MODE_SIZE (GET_MODE (x
));
5441 rtx base
= NULL_RTX
;
5442 switch (GET_CODE (XEXP (x
, 0)))
5446 base
= XEXP (XEXP (x
, 0), 0);
5447 fprintf (file
, "-%d(%s)", size
, reg_names
[REGNO (base
)]);
5451 base
= XEXP (XEXP (x
, 0), 0);
5452 fprintf (file
, "%d(%s)", size
, reg_names
[REGNO (base
)]);
5455 if (GET_CODE (XEXP (XEXP (x
, 0), 0)) == MULT
)
5456 fprintf (file
, "%s(%s)",
5457 reg_names
[REGNO (XEXP (XEXP (XEXP (x
, 0), 0), 0))],
5458 reg_names
[REGNO (XEXP (XEXP (x
, 0), 1))]);
5459 else if (GET_CODE (XEXP (XEXP (x
, 0), 1)) == MULT
)
5460 fprintf (file
, "%s(%s)",
5461 reg_names
[REGNO (XEXP (XEXP (XEXP (x
, 0), 1), 0))],
5462 reg_names
[REGNO (XEXP (XEXP (x
, 0), 0))]);
5463 else if (GET_CODE (XEXP (XEXP (x
, 0), 0)) == REG
5464 && GET_CODE (XEXP (XEXP (x
, 0), 1)) == REG
)
5466 /* Because the REG_POINTER flag can get lost during reload,
5467 pa_legitimate_address_p canonicalizes the order of the
5468 index and base registers in the combined move patterns. */
5469 rtx base
= XEXP (XEXP (x
, 0), 1);
5470 rtx index
= XEXP (XEXP (x
, 0), 0);
5472 fprintf (file
, "%s(%s)",
5473 reg_names
[REGNO (index
)], reg_names
[REGNO (base
)]);
5476 output_address (GET_MODE (x
), XEXP (x
, 0));
5479 output_address (GET_MODE (x
), XEXP (x
, 0));
5484 output_addr_const (file
, x
);
5487 /* output a SYMBOL_REF or a CONST expression involving a SYMBOL_REF. */
5490 pa_output_global_address (FILE *file
, rtx x
, int round_constant
)
5493 /* Imagine (high (const (plus ...))). */
5494 if (GET_CODE (x
) == HIGH
)
5497 if (GET_CODE (x
) == SYMBOL_REF
&& read_only_operand (x
, VOIDmode
))
5498 output_addr_const (file
, x
);
5499 else if (GET_CODE (x
) == SYMBOL_REF
&& !flag_pic
)
5501 output_addr_const (file
, x
);
5502 fputs ("-$global$", file
);
5504 else if (GET_CODE (x
) == CONST
)
5506 const char *sep
= "";
5507 int offset
= 0; /* assembler wants -$global$ at end */
5508 rtx base
= NULL_RTX
;
5510 switch (GET_CODE (XEXP (XEXP (x
, 0), 0)))
5514 base
= XEXP (XEXP (x
, 0), 0);
5515 output_addr_const (file
, base
);
5518 offset
= INTVAL (XEXP (XEXP (x
, 0), 0));
5524 switch (GET_CODE (XEXP (XEXP (x
, 0), 1)))
5528 base
= XEXP (XEXP (x
, 0), 1);
5529 output_addr_const (file
, base
);
5532 offset
= INTVAL (XEXP (XEXP (x
, 0), 1));
5538 /* How bogus. The compiler is apparently responsible for
5539 rounding the constant if it uses an LR field selector.
5541 The linker and/or assembler seem a better place since
5542 they have to do this kind of thing already.
5544 If we fail to do this, HP's optimizing linker may eliminate
5545 an addil, but not update the ldw/stw/ldo instruction that
5546 uses the result of the addil. */
5548 offset
= ((offset
+ 0x1000) & ~0x1fff);
5550 switch (GET_CODE (XEXP (x
, 0)))
5563 gcc_assert (GET_CODE (XEXP (XEXP (x
, 0), 0)) == SYMBOL_REF
);
5571 if (!read_only_operand (base
, VOIDmode
) && !flag_pic
)
5572 fputs ("-$global$", file
);
5574 fprintf (file
, "%s%d", sep
, offset
);
5577 output_addr_const (file
, x
);
5580 /* Output boilerplate text to appear at the beginning of the file.
5581 There are several possible versions. */
5582 #define aputs(x) fputs(x, asm_out_file)
5584 pa_file_start_level (void)
5587 aputs ("\t.LEVEL 2.0w\n");
5588 else if (TARGET_PA_20
)
5589 aputs ("\t.LEVEL 2.0\n");
5590 else if (TARGET_PA_11
)
5591 aputs ("\t.LEVEL 1.1\n");
5593 aputs ("\t.LEVEL 1.0\n");
5597 pa_file_start_space (int sortspace
)
5599 aputs ("\t.SPACE $PRIVATE$");
5602 aputs ("\n\t.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31");
5604 aputs ("\n\t.SUBSPA $TM_CLONE_TABLE$,QUAD=1,ALIGN=8,ACCESS=31");
5605 aputs ("\n\t.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82"
5606 "\n\t.SPACE $TEXT$");
5609 aputs ("\n\t.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44"
5610 "\n\t.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n");
5614 pa_file_start_file (int want_version
)
5616 if (write_symbols
!= NO_DEBUG
)
5618 output_file_directive (asm_out_file
, main_input_filename
);
5620 aputs ("\t.version\t\"01.01\"\n");
5625 pa_file_start_mcount (const char *aswhat
)
5628 fprintf (asm_out_file
, "\t.IMPORT _mcount,%s\n", aswhat
);
5632 pa_elf_file_start (void)
5634 pa_file_start_level ();
5635 pa_file_start_mcount ("ENTRY");
5636 pa_file_start_file (0);
5640 pa_som_file_start (void)
5642 pa_file_start_level ();
5643 pa_file_start_space (0);
5644 aputs ("\t.IMPORT $global$,DATA\n"
5645 "\t.IMPORT $$dyncall,MILLICODE\n");
5646 pa_file_start_mcount ("CODE");
5647 pa_file_start_file (0);
5651 pa_linux_file_start (void)
5653 pa_file_start_file (1);
5654 pa_file_start_level ();
5655 pa_file_start_mcount ("CODE");
5659 pa_hpux64_gas_file_start (void)
5661 pa_file_start_level ();
5662 #ifdef ASM_OUTPUT_TYPE_DIRECTIVE
5664 ASM_OUTPUT_TYPE_DIRECTIVE (asm_out_file
, "_mcount", "function");
5666 pa_file_start_file (1);
5670 pa_hpux64_hpas_file_start (void)
5672 pa_file_start_level ();
5673 pa_file_start_space (1);
5674 pa_file_start_mcount ("CODE");
5675 pa_file_start_file (0);
5679 /* Search the deferred plabel list for SYMBOL and return its internal
5680 label. If an entry for SYMBOL is not found, a new entry is created. */
5683 pa_get_deferred_plabel (rtx symbol
)
5685 const char *fname
= XSTR (symbol
, 0);
5688 /* See if we have already put this function on the list of deferred
5689 plabels. This list is generally small, so a liner search is not
5690 too ugly. If it proves too slow replace it with something faster. */
5691 for (i
= 0; i
< n_deferred_plabels
; i
++)
5692 if (strcmp (fname
, XSTR (deferred_plabels
[i
].symbol
, 0)) == 0)
5695 /* If the deferred plabel list is empty, or this entry was not found
5696 on the list, create a new entry on the list. */
5697 if (deferred_plabels
== NULL
|| i
== n_deferred_plabels
)
5701 if (deferred_plabels
== 0)
5702 deferred_plabels
= ggc_alloc
<deferred_plabel
> ();
5704 deferred_plabels
= GGC_RESIZEVEC (struct deferred_plabel
,
5706 n_deferred_plabels
+ 1);
5708 i
= n_deferred_plabels
++;
5709 deferred_plabels
[i
].internal_label
= gen_label_rtx ();
5710 deferred_plabels
[i
].symbol
= symbol
;
5712 /* Gross. We have just implicitly taken the address of this
5713 function. Mark it in the same manner as assemble_name. */
5714 id
= maybe_get_identifier (targetm
.strip_name_encoding (fname
));
5716 mark_referenced (id
);
5719 return deferred_plabels
[i
].internal_label
;
5723 output_deferred_plabels (void)
5727 /* If we have some deferred plabels, then we need to switch into the
5728 data or readonly data section, and align it to a 4 byte boundary
5729 before outputting the deferred plabels. */
5730 if (n_deferred_plabels
)
5732 switch_to_section (flag_pic
? data_section
: readonly_data_section
);
5733 ASM_OUTPUT_ALIGN (asm_out_file
, TARGET_64BIT
? 3 : 2);
5736 /* Now output the deferred plabels. */
5737 for (i
= 0; i
< n_deferred_plabels
; i
++)
5739 targetm
.asm_out
.internal_label (asm_out_file
, "L",
5740 CODE_LABEL_NUMBER (deferred_plabels
[i
].internal_label
));
5741 assemble_integer (deferred_plabels
[i
].symbol
,
5742 TARGET_64BIT
? 8 : 4, TARGET_64BIT
? 64 : 32, 1);
5746 /* Initialize optabs to point to emulation routines. */
5749 pa_init_libfuncs (void)
5751 if (HPUX_LONG_DOUBLE_LIBRARY
)
5753 set_optab_libfunc (add_optab
, TFmode
, "_U_Qfadd");
5754 set_optab_libfunc (sub_optab
, TFmode
, "_U_Qfsub");
5755 set_optab_libfunc (smul_optab
, TFmode
, "_U_Qfmpy");
5756 set_optab_libfunc (sdiv_optab
, TFmode
, "_U_Qfdiv");
5757 set_optab_libfunc (smin_optab
, TFmode
, "_U_Qmin");
5758 set_optab_libfunc (smax_optab
, TFmode
, "_U_Qfmax");
5759 set_optab_libfunc (sqrt_optab
, TFmode
, "_U_Qfsqrt");
5760 set_optab_libfunc (abs_optab
, TFmode
, "_U_Qfabs");
5761 set_optab_libfunc (neg_optab
, TFmode
, "_U_Qfneg");
5763 set_optab_libfunc (eq_optab
, TFmode
, "_U_Qfeq");
5764 set_optab_libfunc (ne_optab
, TFmode
, "_U_Qfne");
5765 set_optab_libfunc (gt_optab
, TFmode
, "_U_Qfgt");
5766 set_optab_libfunc (ge_optab
, TFmode
, "_U_Qfge");
5767 set_optab_libfunc (lt_optab
, TFmode
, "_U_Qflt");
5768 set_optab_libfunc (le_optab
, TFmode
, "_U_Qfle");
5769 set_optab_libfunc (unord_optab
, TFmode
, "_U_Qfunord");
5771 set_conv_libfunc (sext_optab
, TFmode
, SFmode
, "_U_Qfcnvff_sgl_to_quad");
5772 set_conv_libfunc (sext_optab
, TFmode
, DFmode
, "_U_Qfcnvff_dbl_to_quad");
5773 set_conv_libfunc (trunc_optab
, SFmode
, TFmode
, "_U_Qfcnvff_quad_to_sgl");
5774 set_conv_libfunc (trunc_optab
, DFmode
, TFmode
, "_U_Qfcnvff_quad_to_dbl");
5776 set_conv_libfunc (sfix_optab
, SImode
, TFmode
,
5777 TARGET_64BIT
? "__U_Qfcnvfxt_quad_to_sgl"
5778 : "_U_Qfcnvfxt_quad_to_sgl");
5779 set_conv_libfunc (sfix_optab
, DImode
, TFmode
,
5780 "_U_Qfcnvfxt_quad_to_dbl");
5781 set_conv_libfunc (ufix_optab
, SImode
, TFmode
,
5782 "_U_Qfcnvfxt_quad_to_usgl");
5783 set_conv_libfunc (ufix_optab
, DImode
, TFmode
,
5784 "_U_Qfcnvfxt_quad_to_udbl");
5786 set_conv_libfunc (sfloat_optab
, TFmode
, SImode
,
5787 "_U_Qfcnvxf_sgl_to_quad");
5788 set_conv_libfunc (sfloat_optab
, TFmode
, DImode
,
5789 "_U_Qfcnvxf_dbl_to_quad");
5790 set_conv_libfunc (ufloat_optab
, TFmode
, SImode
,
5791 "_U_Qfcnvxf_usgl_to_quad");
5792 set_conv_libfunc (ufloat_optab
, TFmode
, DImode
,
5793 "_U_Qfcnvxf_udbl_to_quad");
5796 if (TARGET_SYNC_LIBCALL
)
5797 init_sync_libfuncs (8);
5800 /* HP's millicode routines mean something special to the assembler.
5801 Keep track of which ones we have used. */
5803 enum millicodes
{ remI
, remU
, divI
, divU
, mulI
, end1000
};
5804 static void import_milli (enum millicodes
);
5805 static char imported
[(int) end1000
];
5806 static const char * const milli_names
[] = {"remI", "remU", "divI", "divU", "mulI"};
5807 static const char import_string
[] = ".IMPORT $$....,MILLICODE";
5808 #define MILLI_START 10
5811 import_milli (enum millicodes code
)
5813 char str
[sizeof (import_string
)];
5815 if (!imported
[(int) code
])
5817 imported
[(int) code
] = 1;
5818 strcpy (str
, import_string
);
5819 strncpy (str
+ MILLI_START
, milli_names
[(int) code
], 4);
5820 output_asm_insn (str
, 0);
5824 /* The register constraints have put the operands and return value in
5825 the proper registers. */
5828 pa_output_mul_insn (int unsignedp ATTRIBUTE_UNUSED
, rtx_insn
*insn
)
5830 import_milli (mulI
);
5831 return pa_output_millicode_call (insn
, gen_rtx_SYMBOL_REF (Pmode
, "$$mulI"));
5834 /* Emit the rtl for doing a division by a constant. */
5836 /* Do magic division millicodes exist for this value? */
5837 const int pa_magic_milli
[]= {0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1};
5839 /* We'll use an array to keep track of the magic millicodes and
5840 whether or not we've used them already. [n][0] is signed, [n][1] is
5843 static int div_milli
[16][2];
5846 pa_emit_hpdiv_const (rtx
*operands
, int unsignedp
)
5848 if (GET_CODE (operands
[2]) == CONST_INT
5849 && INTVAL (operands
[2]) > 0
5850 && INTVAL (operands
[2]) < 16
5851 && pa_magic_milli
[INTVAL (operands
[2])])
5853 rtx ret
= gen_rtx_REG (SImode
, TARGET_64BIT
? 2 : 31);
5855 emit_move_insn (gen_rtx_REG (SImode
, 26), operands
[1]);
5859 gen_rtvec (6, gen_rtx_SET (gen_rtx_REG (SImode
, 29),
5860 gen_rtx_fmt_ee (unsignedp
? UDIV
: DIV
,
5862 gen_rtx_REG (SImode
, 26),
5864 gen_rtx_CLOBBER (VOIDmode
, operands
[4]),
5865 gen_rtx_CLOBBER (VOIDmode
, operands
[3]),
5866 gen_rtx_CLOBBER (VOIDmode
, gen_rtx_REG (SImode
, 26)),
5867 gen_rtx_CLOBBER (VOIDmode
, gen_rtx_REG (SImode
, 25)),
5868 gen_rtx_CLOBBER (VOIDmode
, ret
))));
5869 emit_move_insn (operands
[0], gen_rtx_REG (SImode
, 29));
5876 pa_output_div_insn (rtx
*operands
, int unsignedp
, rtx_insn
*insn
)
5880 /* If the divisor is a constant, try to use one of the special
5882 if (GET_CODE (operands
[0]) == CONST_INT
)
5884 static char buf
[100];
5885 divisor
= INTVAL (operands
[0]);
5886 if (!div_milli
[divisor
][unsignedp
])
5888 div_milli
[divisor
][unsignedp
] = 1;
5890 output_asm_insn (".IMPORT $$divU_%0,MILLICODE", operands
);
5892 output_asm_insn (".IMPORT $$divI_%0,MILLICODE", operands
);
5896 sprintf (buf
, "$$divU_" HOST_WIDE_INT_PRINT_DEC
,
5897 INTVAL (operands
[0]));
5898 return pa_output_millicode_call (insn
,
5899 gen_rtx_SYMBOL_REF (SImode
, buf
));
5903 sprintf (buf
, "$$divI_" HOST_WIDE_INT_PRINT_DEC
,
5904 INTVAL (operands
[0]));
5905 return pa_output_millicode_call (insn
,
5906 gen_rtx_SYMBOL_REF (SImode
, buf
));
5909 /* Divisor isn't a special constant. */
5914 import_milli (divU
);
5915 return pa_output_millicode_call (insn
,
5916 gen_rtx_SYMBOL_REF (SImode
, "$$divU"));
5920 import_milli (divI
);
5921 return pa_output_millicode_call (insn
,
5922 gen_rtx_SYMBOL_REF (SImode
, "$$divI"));
5927 /* Output a $$rem millicode to do mod. */
5930 pa_output_mod_insn (int unsignedp
, rtx_insn
*insn
)
5934 import_milli (remU
);
5935 return pa_output_millicode_call (insn
,
5936 gen_rtx_SYMBOL_REF (SImode
, "$$remU"));
5940 import_milli (remI
);
5941 return pa_output_millicode_call (insn
,
5942 gen_rtx_SYMBOL_REF (SImode
, "$$remI"));
5947 pa_output_arg_descriptor (rtx_insn
*call_insn
)
5949 const char *arg_regs
[4];
5950 machine_mode arg_mode
;
5952 int i
, output_flag
= 0;
5955 /* We neither need nor want argument location descriptors for the
5956 64bit runtime environment or the ELF32 environment. */
5957 if (TARGET_64BIT
|| TARGET_ELF32
)
5960 for (i
= 0; i
< 4; i
++)
5963 /* Specify explicitly that no argument relocations should take place
5964 if using the portable runtime calling conventions. */
5965 if (TARGET_PORTABLE_RUNTIME
)
5967 fputs ("\t.CALL ARGW0=NO,ARGW1=NO,ARGW2=NO,ARGW3=NO,RETVAL=NO\n",
5972 gcc_assert (CALL_P (call_insn
));
5973 for (link
= CALL_INSN_FUNCTION_USAGE (call_insn
);
5974 link
; link
= XEXP (link
, 1))
5976 rtx use
= XEXP (link
, 0);
5978 if (! (GET_CODE (use
) == USE
5979 && GET_CODE (XEXP (use
, 0)) == REG
5980 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use
, 0)))))
5983 arg_mode
= GET_MODE (XEXP (use
, 0));
5984 regno
= REGNO (XEXP (use
, 0));
5985 if (regno
>= 23 && regno
<= 26)
5987 arg_regs
[26 - regno
] = "GR";
5988 if (arg_mode
== DImode
)
5989 arg_regs
[25 - regno
] = "GR";
5991 else if (regno
>= 32 && regno
<= 39)
5993 if (arg_mode
== SFmode
)
5994 arg_regs
[(regno
- 32) / 2] = "FR";
5997 #ifndef HP_FP_ARG_DESCRIPTOR_REVERSED
5998 arg_regs
[(regno
- 34) / 2] = "FR";
5999 arg_regs
[(regno
- 34) / 2 + 1] = "FU";
6001 arg_regs
[(regno
- 34) / 2] = "FU";
6002 arg_regs
[(regno
- 34) / 2 + 1] = "FR";
6007 fputs ("\t.CALL ", asm_out_file
);
6008 for (i
= 0; i
< 4; i
++)
6013 fputc (',', asm_out_file
);
6014 fprintf (asm_out_file
, "ARGW%d=%s", i
, arg_regs
[i
]);
6017 fputc ('\n', asm_out_file
);
6020 /* Inform reload about cases where moving X with a mode MODE to or from
6021 a register in RCLASS requires an extra scratch or immediate register.
6022 Return the class needed for the immediate register. */
6025 pa_secondary_reload (bool in_p
, rtx x
, reg_class_t rclass_i
,
6026 machine_mode mode
, secondary_reload_info
*sri
)
6029 enum reg_class rclass
= (enum reg_class
) rclass_i
;
6031 /* Handle the easy stuff first. */
6032 if (rclass
== R1_REGS
)
6038 if (rclass
== BASE_REG_CLASS
&& regno
< FIRST_PSEUDO_REGISTER
)
6044 /* If we have something like (mem (mem (...)), we can safely assume the
6045 inner MEM will end up in a general register after reloading, so there's
6046 no need for a secondary reload. */
6047 if (GET_CODE (x
) == MEM
&& GET_CODE (XEXP (x
, 0)) == MEM
)
6050 /* Trying to load a constant into a FP register during PIC code
6051 generation requires %r1 as a scratch register. For float modes,
6052 the only legitimate constant is CONST0_RTX. However, there are
6053 a few patterns that accept constant double operands. */
6055 && FP_REG_CLASS_P (rclass
)
6056 && (GET_CODE (x
) == CONST_INT
|| GET_CODE (x
) == CONST_DOUBLE
))
6061 sri
->icode
= CODE_FOR_reload_insi_r1
;
6065 sri
->icode
= CODE_FOR_reload_indi_r1
;
6069 sri
->icode
= CODE_FOR_reload_insf_r1
;
6073 sri
->icode
= CODE_FOR_reload_indf_r1
;
6082 /* Secondary reloads of symbolic expressions require %r1 as a scratch
6083 register when we're generating PIC code or when the operand isn't
6085 if (pa_symbolic_expression_p (x
))
6087 if (GET_CODE (x
) == HIGH
)
6090 if (flag_pic
|| !read_only_operand (x
, VOIDmode
))
6095 sri
->icode
= CODE_FOR_reload_insi_r1
;
6099 sri
->icode
= CODE_FOR_reload_indi_r1
;
6109 /* Profiling showed the PA port spends about 1.3% of its compilation
6110 time in true_regnum from calls inside pa_secondary_reload_class. */
6111 if (regno
>= FIRST_PSEUDO_REGISTER
|| GET_CODE (x
) == SUBREG
)
6112 regno
= true_regnum (x
);
6114 /* Handle reloads for floating point loads and stores. */
6115 if ((regno
>= FIRST_PSEUDO_REGISTER
|| regno
== -1)
6116 && FP_REG_CLASS_P (rclass
))
6122 /* We don't need a secondary reload for indexed memory addresses.
6124 When INT14_OK_STRICT is true, it might appear that we could
6125 directly allow register indirect memory addresses. However,
6126 this doesn't work because we don't support SUBREGs in
6127 floating-point register copies and reload doesn't tell us
6128 when it's going to use a SUBREG. */
6129 if (IS_INDEX_ADDR_P (x
))
6133 /* Request a secondary reload with a general scratch register
6134 for everything else. ??? Could symbolic operands be handled
6135 directly when generating non-pic PA 2.0 code? */
6137 ? direct_optab_handler (reload_in_optab
, mode
)
6138 : direct_optab_handler (reload_out_optab
, mode
));
6142 /* A SAR<->FP register copy requires an intermediate general register
6143 and secondary memory. We need a secondary reload with a general
6144 scratch register for spills. */
6145 if (rclass
== SHIFT_REGS
)
6148 if (regno
>= FIRST_PSEUDO_REGISTER
|| regno
< 0)
6151 ? direct_optab_handler (reload_in_optab
, mode
)
6152 : direct_optab_handler (reload_out_optab
, mode
));
6156 /* Handle FP copy. */
6157 if (FP_REG_CLASS_P (REGNO_REG_CLASS (regno
)))
6158 return GENERAL_REGS
;
6161 if (regno
>= 0 && regno
< FIRST_PSEUDO_REGISTER
6162 && REGNO_REG_CLASS (regno
) == SHIFT_REGS
6163 && FP_REG_CLASS_P (rclass
))
6164 return GENERAL_REGS
;
6169 /* Implement TARGET_SECONDARY_MEMORY_NEEDED. */
6172 pa_secondary_memory_needed (machine_mode mode ATTRIBUTE_UNUSED
,
6173 reg_class_t class1 ATTRIBUTE_UNUSED
,
6174 reg_class_t class2 ATTRIBUTE_UNUSED
)
6176 #ifdef PA_SECONDARY_MEMORY_NEEDED
6177 return PA_SECONDARY_MEMORY_NEEDED (mode
, class1
, class2
);
6183 /* Implement TARGET_EXTRA_LIVE_ON_ENTRY. The argument pointer
6184 is only marked as live on entry by df-scan when it is a fixed
6185 register. It isn't a fixed register in the 64-bit runtime,
6186 so we need to mark it here. */
6189 pa_extra_live_on_entry (bitmap regs
)
6192 bitmap_set_bit (regs
, ARG_POINTER_REGNUM
);
6195 /* Implement EH_RETURN_HANDLER_RTX. The MEM needs to be volatile
6196 to prevent it from being deleted. */
6199 pa_eh_return_handler_rtx (void)
6203 tmp
= gen_rtx_PLUS (word_mode
, hard_frame_pointer_rtx
,
6204 TARGET_64BIT
? GEN_INT (-16) : GEN_INT (-20));
6205 tmp
= gen_rtx_MEM (word_mode
, tmp
);
6210 /* In the 32-bit runtime, arguments larger than eight bytes are passed
6211 by invisible reference. As a GCC extension, we also pass anything
6212 with a zero or variable size by reference.
6214 The 64-bit runtime does not describe passing any types by invisible
6215 reference. The internals of GCC can't currently handle passing
6216 empty structures, and zero or variable length arrays when they are
6217 not passed entirely on the stack or by reference. Thus, as a GCC
6218 extension, we pass these types by reference. The HP compiler doesn't
6219 support these types, so hopefully there shouldn't be any compatibility
6220 issues. This may have to be revisited when HP releases a C99 compiler
6221 or updates the ABI. */
6224 pa_pass_by_reference (cumulative_args_t
, const function_arg_info
&arg
)
6226 HOST_WIDE_INT size
= arg
.type_size_in_bytes ();
6230 return size
<= 0 || size
> 8;
6233 /* Implement TARGET_FUNCTION_ARG_PADDING. */
6235 static pad_direction
6236 pa_function_arg_padding (machine_mode mode
, const_tree type
)
6241 && (AGGREGATE_TYPE_P (type
)
6242 || TREE_CODE (type
) == COMPLEX_TYPE
6243 || TREE_CODE (type
) == VECTOR_TYPE
)))
6245 /* Return PAD_NONE if justification is not required. */
6247 && TREE_CODE (TYPE_SIZE (type
)) == INTEGER_CST
6248 && (int_size_in_bytes (type
) * BITS_PER_UNIT
) % PARM_BOUNDARY
== 0)
6251 /* The directions set here are ignored when a BLKmode argument larger
6252 than a word is placed in a register. Different code is used for
6253 the stack and registers. This makes it difficult to have a
6254 consistent data representation for both the stack and registers.
6255 For both runtimes, the justification and padding for arguments on
6256 the stack and in registers should be identical. */
6258 /* The 64-bit runtime specifies left justification for aggregates. */
6261 /* The 32-bit runtime architecture specifies right justification.
6262 When the argument is passed on the stack, the argument is padded
6263 with garbage on the left. The HP compiler pads with zeros. */
6264 return PAD_DOWNWARD
;
6267 if (GET_MODE_BITSIZE (mode
) < PARM_BOUNDARY
)
6268 return PAD_DOWNWARD
;
6274 /* Do what is necessary for `va_start'. We look at the current function
6275 to determine if stdargs or varargs is used and fill in an initial
6276 va_list. A pointer to this constructor is returned. */
6279 hppa_builtin_saveregs (void)
6282 tree fntype
= TREE_TYPE (current_function_decl
);
6283 int argadj
= ((!stdarg_p (fntype
))
6284 ? UNITS_PER_WORD
: 0);
6287 offset
= plus_constant (Pmode
, crtl
->args
.arg_offset_rtx
, argadj
);
6289 offset
= crtl
->args
.arg_offset_rtx
;
6295 /* Adjust for varargs/stdarg differences. */
6297 offset
= plus_constant (Pmode
, crtl
->args
.arg_offset_rtx
, -argadj
);
6299 offset
= crtl
->args
.arg_offset_rtx
;
6301 /* We need to save %r26 .. %r19 inclusive starting at offset -64
6302 from the incoming arg pointer and growing to larger addresses. */
6303 for (i
= 26, off
= -64; i
>= 19; i
--, off
+= 8)
6304 emit_move_insn (gen_rtx_MEM (word_mode
,
6305 plus_constant (Pmode
,
6306 arg_pointer_rtx
, off
)),
6307 gen_rtx_REG (word_mode
, i
));
6309 /* The incoming args pointer points just beyond the flushback area;
6310 normally this is not a serious concern. However, when we are doing
6311 varargs/stdargs we want to make the arg pointer point to the start
6312 of the incoming argument area. */
6313 emit_move_insn (virtual_incoming_args_rtx
,
6314 plus_constant (Pmode
, arg_pointer_rtx
, -64));
6316 /* Now return a pointer to the first anonymous argument. */
6317 return copy_to_reg (expand_binop (Pmode
, add_optab
,
6318 virtual_incoming_args_rtx
,
6319 offset
, 0, 0, OPTAB_LIB_WIDEN
));
6322 /* Store general registers on the stack. */
6323 dest
= gen_rtx_MEM (BLKmode
,
6324 plus_constant (Pmode
, crtl
->args
.internal_arg_pointer
,
6326 set_mem_alias_set (dest
, get_varargs_alias_set ());
6327 set_mem_align (dest
, BITS_PER_WORD
);
6328 move_block_from_reg (23, dest
, 4);
6330 /* move_block_from_reg will emit code to store the argument registers
6331 individually as scalar stores.
6333 However, other insns may later load from the same addresses for
6334 a structure load (passing a struct to a varargs routine).
6336 The alias code assumes that such aliasing can never happen, so we
6337 have to keep memory referencing insns from moving up beyond the
6338 last argument register store. So we emit a blockage insn here. */
6339 emit_insn (gen_blockage ());
6341 return copy_to_reg (expand_binop (Pmode
, add_optab
,
6342 crtl
->args
.internal_arg_pointer
,
6343 offset
, 0, 0, OPTAB_LIB_WIDEN
));
6347 hppa_va_start (tree valist
, rtx nextarg
)
6349 nextarg
= expand_builtin_saveregs ();
6350 std_expand_builtin_va_start (valist
, nextarg
);
6354 hppa_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
6359 /* Args grow upward. We can use the generic routines. */
6360 return std_gimplify_va_arg_expr (valist
, type
, pre_p
, post_p
);
6362 else /* !TARGET_64BIT */
6364 tree ptr
= build_pointer_type (type
);
6367 unsigned int size
, ofs
;
6370 indirect
= pass_va_arg_by_reference (type
);
6374 ptr
= build_pointer_type (type
);
6376 size
= int_size_in_bytes (type
);
6377 valist_type
= TREE_TYPE (valist
);
6379 /* Args grow down. Not handled by generic routines. */
6381 u
= fold_convert (sizetype
, size_in_bytes (type
));
6382 u
= fold_build1 (NEGATE_EXPR
, sizetype
, u
);
6383 t
= fold_build_pointer_plus (valist
, u
);
6385 /* Align to 4 or 8 byte boundary depending on argument size. */
6387 u
= build_int_cst (TREE_TYPE (t
), (HOST_WIDE_INT
)(size
> 4 ? -8 : -4));
6388 t
= build2 (BIT_AND_EXPR
, TREE_TYPE (t
), t
, u
);
6389 t
= fold_convert (valist_type
, t
);
6391 t
= build2 (MODIFY_EXPR
, valist_type
, valist
, t
);
6393 ofs
= (8 - size
) % 4;
6395 t
= fold_build_pointer_plus_hwi (t
, ofs
);
6397 t
= fold_convert (ptr
, t
);
6398 t
= build_va_arg_indirect_ref (t
);
6401 t
= build_va_arg_indirect_ref (t
);
6407 /* True if MODE is valid for the target. By "valid", we mean able to
6408 be manipulated in non-trivial ways. In particular, this means all
6409 the arithmetic is supported.
6411 Currently, TImode is not valid as the HP 64-bit runtime documentation
6412 doesn't document the alignment and calling conventions for this type.
6413 Thus, we return false when PRECISION is 2 * BITS_PER_WORD and
6414 2 * BITS_PER_WORD isn't equal LONG_LONG_TYPE_SIZE. */
6417 pa_scalar_mode_supported_p (scalar_mode mode
)
6419 int precision
= GET_MODE_PRECISION (mode
);
6421 switch (GET_MODE_CLASS (mode
))
6423 case MODE_PARTIAL_INT
:
6425 if (precision
== CHAR_TYPE_SIZE
)
6427 if (precision
== SHORT_TYPE_SIZE
)
6429 if (precision
== INT_TYPE_SIZE
)
6431 if (precision
== LONG_TYPE_SIZE
)
6433 if (precision
== LONG_LONG_TYPE_SIZE
)
6438 if (precision
== FLOAT_TYPE_SIZE
)
6440 if (precision
== DOUBLE_TYPE_SIZE
)
6442 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
6446 case MODE_DECIMAL_FLOAT
:
6454 /* Return TRUE if INSN, a jump insn, has an unfilled delay slot and
6455 it branches into the delay slot. Otherwise, return FALSE. */
6458 branch_to_delay_slot_p (rtx_insn
*insn
)
6460 rtx_insn
*jump_insn
;
6462 if (dbr_sequence_length ())
6465 jump_insn
= next_active_insn (JUMP_LABEL_AS_INSN (insn
));
6468 insn
= next_active_insn (insn
);
6469 if (jump_insn
== insn
)
6472 /* We can't rely on the length of asms. So, we return FALSE when
6473 the branch is followed by an asm. */
6475 || GET_CODE (PATTERN (insn
)) == ASM_INPUT
6476 || asm_noperands (PATTERN (insn
)) >= 0
6477 || get_attr_length (insn
) > 0)
6484 /* Return TRUE if INSN, a forward jump insn, needs a nop in its delay slot.
6486 This occurs when INSN has an unfilled delay slot and is followed
6487 by an asm. Disaster can occur if the asm is empty and the jump
6488 branches into the delay slot. So, we add a nop in the delay slot
6489 when this occurs. */
6492 branch_needs_nop_p (rtx_insn
*insn
)
6494 rtx_insn
*jump_insn
;
6496 if (dbr_sequence_length ())
6499 jump_insn
= next_active_insn (JUMP_LABEL_AS_INSN (insn
));
6502 insn
= next_active_insn (insn
);
6503 if (!insn
|| jump_insn
== insn
)
6506 if (!(GET_CODE (PATTERN (insn
)) == ASM_INPUT
6507 || asm_noperands (PATTERN (insn
)) >= 0)
6508 && get_attr_length (insn
) > 0)
6515 /* Return TRUE if INSN, a forward jump insn, can use nullification
6516 to skip the following instruction. This avoids an extra cycle due
6517 to a mis-predicted branch when we fall through. */
6520 use_skip_p (rtx_insn
*insn
)
6522 rtx_insn
*jump_insn
= next_active_insn (JUMP_LABEL_AS_INSN (insn
));
6526 insn
= next_active_insn (insn
);
6528 /* We can't rely on the length of asms, so we can't skip asms. */
6530 || GET_CODE (PATTERN (insn
)) == ASM_INPUT
6531 || asm_noperands (PATTERN (insn
)) >= 0)
6533 if (get_attr_length (insn
) == 4
6534 && jump_insn
== next_active_insn (insn
))
6536 if (get_attr_length (insn
) > 0)
6543 /* This routine handles all the normal conditional branch sequences we
6544 might need to generate. It handles compare immediate vs compare
6545 register, nullification of delay slots, varying length branches,
6546 negated branches, and all combinations of the above. It returns the
6547 output appropriate to emit the branch corresponding to all given
6551 pa_output_cbranch (rtx
*operands
, int negated
, rtx_insn
*insn
)
6553 static char buf
[100];
6555 int nullify
= INSN_ANNULLED_BRANCH_P (insn
);
6556 int length
= get_attr_length (insn
);
6559 /* A conditional branch to the following instruction (e.g. the delay slot)
6560 is asking for a disaster. This can happen when not optimizing and
6561 when jump optimization fails.
6563 While it is usually safe to emit nothing, this can fail if the
6564 preceding instruction is a nullified branch with an empty delay
6565 slot and the same branch target as this branch. We could check
6566 for this but jump optimization should eliminate nop jumps. It
6567 is always safe to emit a nop. */
6568 if (branch_to_delay_slot_p (insn
))
6571 /* The doubleword form of the cmpib instruction doesn't have the LEU
6572 and GTU conditions while the cmpb instruction does. Since we accept
6573 zero for cmpb, we must ensure that we use cmpb for the comparison. */
6574 if (GET_MODE (operands
[1]) == DImode
&& operands
[2] == const0_rtx
)
6575 operands
[2] = gen_rtx_REG (DImode
, 0);
6576 if (GET_MODE (operands
[2]) == DImode
&& operands
[1] == const0_rtx
)
6577 operands
[1] = gen_rtx_REG (DImode
, 0);
6579 /* If this is a long branch with its delay slot unfilled, set `nullify'
6580 as it can nullify the delay slot and save a nop. */
6581 if (length
== 8 && dbr_sequence_length () == 0)
6584 /* If this is a short forward conditional branch which did not get
6585 its delay slot filled, the delay slot can still be nullified. */
6586 if (! nullify
&& length
== 4 && dbr_sequence_length () == 0)
6587 nullify
= forward_branch_p (insn
);
6589 /* A forward branch over a single nullified insn can be done with a
6590 comclr instruction. This avoids a single cycle penalty due to
6591 mis-predicted branch if we fall through (branch not taken). */
6592 useskip
= (length
== 4 && nullify
) ? use_skip_p (insn
) : FALSE
;
6596 /* All short conditional branches except backwards with an unfilled
6600 strcpy (buf
, "{com%I2clr,|cmp%I2clr,}");
6602 strcpy (buf
, "{com%I2b,|cmp%I2b,}");
6603 if (GET_MODE (operands
[1]) == DImode
)
6606 strcat (buf
, "%B3");
6608 strcat (buf
, "%S3");
6610 strcat (buf
, " %2,%r1,%%r0");
6613 if (branch_needs_nop_p (insn
))
6614 strcat (buf
, ",n %2,%r1,%0%#");
6616 strcat (buf
, ",n %2,%r1,%0");
6619 strcat (buf
, " %2,%r1,%0");
6622 /* All long conditionals. Note a short backward branch with an
6623 unfilled delay slot is treated just like a long backward branch
6624 with an unfilled delay slot. */
6626 /* Handle weird backwards branch with a filled delay slot
6627 which is nullified. */
6628 if (dbr_sequence_length () != 0
6629 && ! forward_branch_p (insn
)
6632 strcpy (buf
, "{com%I2b,|cmp%I2b,}");
6633 if (GET_MODE (operands
[1]) == DImode
)
6636 strcat (buf
, "%S3");
6638 strcat (buf
, "%B3");
6639 strcat (buf
, ",n %2,%r1,.+12\n\tb %0");
6641 /* Handle short backwards branch with an unfilled delay slot.
6642 Using a comb;nop rather than comiclr;bl saves 1 cycle for both
6643 taken and untaken branches. */
6644 else if (dbr_sequence_length () == 0
6645 && ! forward_branch_p (insn
)
6646 && INSN_ADDRESSES_SET_P ()
6647 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn
)))
6648 - INSN_ADDRESSES (INSN_UID (insn
)) - 8))
6650 strcpy (buf
, "{com%I2b,|cmp%I2b,}");
6651 if (GET_MODE (operands
[1]) == DImode
)
6654 strcat (buf
, "%B3 %2,%r1,%0%#");
6656 strcat (buf
, "%S3 %2,%r1,%0%#");
6660 strcpy (buf
, "{com%I2clr,|cmp%I2clr,}");
6661 if (GET_MODE (operands
[1]) == DImode
)
6664 strcat (buf
, "%S3");
6666 strcat (buf
, "%B3");
6668 strcat (buf
, " %2,%r1,%%r0\n\tb,n %0");
6670 strcat (buf
, " %2,%r1,%%r0\n\tb %0");
6675 /* The reversed conditional branch must branch over one additional
6676 instruction if the delay slot is filled and needs to be extracted
6677 by pa_output_lbranch. If the delay slot is empty or this is a
6678 nullified forward branch, the instruction after the reversed
6679 condition branch must be nullified. */
6680 if (dbr_sequence_length () == 0
6681 || (nullify
&& forward_branch_p (insn
)))
6685 operands
[4] = GEN_INT (length
);
6690 operands
[4] = GEN_INT (length
+ 4);
6693 /* Create a reversed conditional branch which branches around
6694 the following insns. */
6695 if (GET_MODE (operands
[1]) != DImode
)
6701 "{com%I2b,%S3,n %2,%r1,.+%4|cmp%I2b,%S3,n %2,%r1,.+%4}");
6704 "{com%I2b,%B3,n %2,%r1,.+%4|cmp%I2b,%B3,n %2,%r1,.+%4}");
6710 "{com%I2b,%S3 %2,%r1,.+%4|cmp%I2b,%S3 %2,%r1,.+%4}");
6713 "{com%I2b,%B3 %2,%r1,.+%4|cmp%I2b,%B3 %2,%r1,.+%4}");
6722 "{com%I2b,*%S3,n %2,%r1,.+%4|cmp%I2b,*%S3,n %2,%r1,.+%4}");
6725 "{com%I2b,*%B3,n %2,%r1,.+%4|cmp%I2b,*%B3,n %2,%r1,.+%4}");
6731 "{com%I2b,*%S3 %2,%r1,.+%4|cmp%I2b,*%S3 %2,%r1,.+%4}");
6734 "{com%I2b,*%B3 %2,%r1,.+%4|cmp%I2b,*%B3 %2,%r1,.+%4}");
6738 output_asm_insn (buf
, operands
);
6739 return pa_output_lbranch (operands
[0], insn
, xdelay
);
6744 /* Output a PIC pc-relative instruction sequence to load the address of
6745 OPERANDS[0] to register OPERANDS[2]. OPERANDS[0] is a symbol ref
6746 or a code label. OPERANDS[1] specifies the register to use to load
6747 the program counter. OPERANDS[3] may be used for label generation
6748 The sequence is always three instructions in length. The program
6749 counter recorded for PA 1.X is eight bytes more than that for PA 2.0.
6750 Register %r1 is clobbered. */
6753 pa_output_pic_pcrel_sequence (rtx
*operands
)
6755 gcc_assert (SYMBOL_REF_P (operands
[0]) || LABEL_P (operands
[0]));
6758 /* We can use mfia to determine the current program counter. */
6759 if (TARGET_SOM
|| !TARGET_GAS
)
6761 operands
[3] = gen_label_rtx ();
6762 targetm
.asm_out
.internal_label (asm_out_file
, "L",
6763 CODE_LABEL_NUMBER (operands
[3]));
6764 output_asm_insn ("mfia %1", operands
);
6765 output_asm_insn ("addil L'%0-%l3,%1", operands
);
6766 output_asm_insn ("ldo R'%0-%l3(%%r1),%2", operands
);
6770 output_asm_insn ("mfia %1", operands
);
6771 output_asm_insn ("addil L'%0-$PIC_pcrel$0+12,%1", operands
);
6772 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+16(%%r1),%2", operands
);
6777 /* We need to use a branch to determine the current program counter. */
6778 output_asm_insn ("{bl|b,l} .+8,%1", operands
);
6779 if (TARGET_SOM
|| !TARGET_GAS
)
6781 operands
[3] = gen_label_rtx ();
6782 output_asm_insn ("addil L'%0-%l3,%1", operands
);
6783 targetm
.asm_out
.internal_label (asm_out_file
, "L",
6784 CODE_LABEL_NUMBER (operands
[3]));
6785 output_asm_insn ("ldo R'%0-%l3(%%r1),%2", operands
);
6789 output_asm_insn ("addil L'%0-$PIC_pcrel$0+4,%1", operands
);
6790 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+8(%%r1),%2", operands
);
6795 /* This routine handles output of long unconditional branches that
6796 exceed the maximum range of a simple branch instruction. Since
6797 we don't have a register available for the branch, we save register
6798 %r1 in the frame marker, load the branch destination DEST into %r1,
6799 execute the branch, and restore %r1 in the delay slot of the branch.
6801 Since long branches may have an insn in the delay slot and the
6802 delay slot is used to restore %r1, we in general need to extract
6803 this insn and execute it before the branch. However, to facilitate
6804 use of this function by conditional branches, we also provide an
6805 option to not extract the delay insn so that it will be emitted
6806 after the long branch. So, if there is an insn in the delay slot,
6807 it is extracted if XDELAY is nonzero.
6809 The lengths of the various long-branch sequences are 20, 16 and 24
6810 bytes for the portable runtime, non-PIC and PIC cases, respectively. */
6813 pa_output_lbranch (rtx dest
, rtx_insn
*insn
, int xdelay
)
6817 xoperands
[0] = dest
;
6819 /* First, free up the delay slot. */
6820 if (xdelay
&& dbr_sequence_length () != 0)
6822 /* We can't handle a jump in the delay slot. */
6823 gcc_assert (! JUMP_P (NEXT_INSN (insn
)));
6825 final_scan_insn (NEXT_INSN (insn
), asm_out_file
,
6828 /* Now delete the delay insn. */
6829 SET_INSN_DELETED (NEXT_INSN (insn
));
6832 /* Output an insn to save %r1. The runtime documentation doesn't
6833 specify whether the "Clean Up" slot in the callers frame can
6834 be clobbered by the callee. It isn't copied by HP's builtin
6835 alloca, so this suggests that it can be clobbered if necessary.
6836 The "Static Link" location is copied by HP builtin alloca, so
6837 we avoid using it. Using the cleanup slot might be a problem
6838 if we have to interoperate with languages that pass cleanup
6839 information. However, it should be possible to handle these
6840 situations with GCC's asm feature.
6842 The "Current RP" slot is reserved for the called procedure, so
6843 we try to use it when we don't have a frame of our own. It's
6844 rather unlikely that we won't have a frame when we need to emit
6847 Really the way to go long term is a register scavenger; goto
6848 the target of the jump and find a register which we can use
6849 as a scratch to hold the value in %r1. Then, we wouldn't have
6850 to free up the delay slot or clobber a slot that may be needed
6851 for other purposes. */
6854 if (actual_fsize
== 0 && !df_regs_ever_live_p (2))
6855 /* Use the return pointer slot in the frame marker. */
6856 output_asm_insn ("std %%r1,-16(%%r30)", xoperands
);
6858 /* Use the slot at -40 in the frame marker since HP builtin
6859 alloca doesn't copy it. */
6860 output_asm_insn ("std %%r1,-40(%%r30)", xoperands
);
6864 if (actual_fsize
== 0 && !df_regs_ever_live_p (2))
6865 /* Use the return pointer slot in the frame marker. */
6866 output_asm_insn ("stw %%r1,-20(%%r30)", xoperands
);
6868 /* Use the "Clean Up" slot in the frame marker. In GCC,
6869 the only other use of this location is for copying a
6870 floating point double argument from a floating-point
6871 register to two general registers. The copy is done
6872 as an "atomic" operation when outputting a call, so it
6873 won't interfere with our using the location here. */
6874 output_asm_insn ("stw %%r1,-12(%%r30)", xoperands
);
6877 if (TARGET_PORTABLE_RUNTIME
)
6879 output_asm_insn ("ldil L'%0,%%r1", xoperands
);
6880 output_asm_insn ("ldo R'%0(%%r1),%%r1", xoperands
);
6881 output_asm_insn ("bv %%r0(%%r1)", xoperands
);
6885 xoperands
[1] = gen_rtx_REG (Pmode
, 1);
6886 xoperands
[2] = xoperands
[1];
6887 pa_output_pic_pcrel_sequence (xoperands
);
6888 output_asm_insn ("bv %%r0(%%r1)", xoperands
);
6891 /* Now output a very long branch to the original target. */
6892 output_asm_insn ("ldil L'%l0,%%r1\n\tbe R'%l0(%%sr4,%%r1)", xoperands
);
6894 /* Now restore the value of %r1 in the delay slot. */
6897 if (actual_fsize
== 0 && !df_regs_ever_live_p (2))
6898 return "ldd -16(%%r30),%%r1";
6900 return "ldd -40(%%r30),%%r1";
6904 if (actual_fsize
== 0 && !df_regs_ever_live_p (2))
6905 return "ldw -20(%%r30),%%r1";
6907 return "ldw -12(%%r30),%%r1";
6911 /* This routine handles all the branch-on-bit conditional branch sequences we
6912 might need to generate. It handles nullification of delay slots,
6913 varying length branches, negated branches and all combinations of the
6914 above. it returns the appropriate output template to emit the branch. */
6917 pa_output_bb (rtx
*operands ATTRIBUTE_UNUSED
, int negated
, rtx_insn
*insn
, int which
)
6919 static char buf
[100];
6921 int nullify
= INSN_ANNULLED_BRANCH_P (insn
);
6922 int length
= get_attr_length (insn
);
6925 /* A conditional branch to the following instruction (e.g. the delay slot) is
6926 asking for a disaster. I do not think this can happen as this pattern
6927 is only used when optimizing; jump optimization should eliminate the
6928 jump. But be prepared just in case. */
6930 if (branch_to_delay_slot_p (insn
))
6933 /* If this is a long branch with its delay slot unfilled, set `nullify'
6934 as it can nullify the delay slot and save a nop. */
6935 if (length
== 8 && dbr_sequence_length () == 0)
6938 /* If this is a short forward conditional branch which did not get
6939 its delay slot filled, the delay slot can still be nullified. */
6940 if (! nullify
&& length
== 4 && dbr_sequence_length () == 0)
6941 nullify
= forward_branch_p (insn
);
6943 /* A forward branch over a single nullified insn can be done with a
6944 extrs instruction. This avoids a single cycle penalty due to
6945 mis-predicted branch if we fall through (branch not taken). */
6946 useskip
= (length
== 4 && nullify
) ? use_skip_p (insn
) : FALSE
;
6951 /* All short conditional branches except backwards with an unfilled
6955 strcpy (buf
, "{extrs,|extrw,s,}");
6957 strcpy (buf
, "bb,");
6958 if (useskip
&& GET_MODE (operands
[0]) == DImode
)
6959 strcpy (buf
, "extrd,s,*");
6960 else if (GET_MODE (operands
[0]) == DImode
)
6961 strcpy (buf
, "bb,*");
6962 if ((which
== 0 && negated
)
6963 || (which
== 1 && ! negated
))
6968 strcat (buf
, " %0,%1,1,%%r0");
6969 else if (nullify
&& negated
)
6971 if (branch_needs_nop_p (insn
))
6972 strcat (buf
, ",n %0,%1,%3%#");
6974 strcat (buf
, ",n %0,%1,%3");
6976 else if (nullify
&& ! negated
)
6978 if (branch_needs_nop_p (insn
))
6979 strcat (buf
, ",n %0,%1,%2%#");
6981 strcat (buf
, ",n %0,%1,%2");
6983 else if (! nullify
&& negated
)
6984 strcat (buf
, " %0,%1,%3");
6985 else if (! nullify
&& ! negated
)
6986 strcat (buf
, " %0,%1,%2");
6989 /* All long conditionals. Note a short backward branch with an
6990 unfilled delay slot is treated just like a long backward branch
6991 with an unfilled delay slot. */
6993 /* Handle weird backwards branch with a filled delay slot
6994 which is nullified. */
6995 if (dbr_sequence_length () != 0
6996 && ! forward_branch_p (insn
)
6999 strcpy (buf
, "bb,");
7000 if (GET_MODE (operands
[0]) == DImode
)
7002 if ((which
== 0 && negated
)
7003 || (which
== 1 && ! negated
))
7008 strcat (buf
, ",n %0,%1,.+12\n\tb %3");
7010 strcat (buf
, ",n %0,%1,.+12\n\tb %2");
7012 /* Handle short backwards branch with an unfilled delay slot.
7013 Using a bb;nop rather than extrs;bl saves 1 cycle for both
7014 taken and untaken branches. */
7015 else if (dbr_sequence_length () == 0
7016 && ! forward_branch_p (insn
)
7017 && INSN_ADDRESSES_SET_P ()
7018 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn
)))
7019 - INSN_ADDRESSES (INSN_UID (insn
)) - 8))
7021 strcpy (buf
, "bb,");
7022 if (GET_MODE (operands
[0]) == DImode
)
7024 if ((which
== 0 && negated
)
7025 || (which
== 1 && ! negated
))
7030 strcat (buf
, " %0,%1,%3%#");
7032 strcat (buf
, " %0,%1,%2%#");
7036 if (GET_MODE (operands
[0]) == DImode
)
7037 strcpy (buf
, "extrd,s,*");
7039 strcpy (buf
, "{extrs,|extrw,s,}");
7040 if ((which
== 0 && negated
)
7041 || (which
== 1 && ! negated
))
7045 if (nullify
&& negated
)
7046 strcat (buf
, " %0,%1,1,%%r0\n\tb,n %3");
7047 else if (nullify
&& ! negated
)
7048 strcat (buf
, " %0,%1,1,%%r0\n\tb,n %2");
7050 strcat (buf
, " %0,%1,1,%%r0\n\tb %3");
7052 strcat (buf
, " %0,%1,1,%%r0\n\tb %2");
7057 /* The reversed conditional branch must branch over one additional
7058 instruction if the delay slot is filled and needs to be extracted
7059 by pa_output_lbranch. If the delay slot is empty or this is a
7060 nullified forward branch, the instruction after the reversed
7061 condition branch must be nullified. */
7062 if (dbr_sequence_length () == 0
7063 || (nullify
&& forward_branch_p (insn
)))
7067 operands
[4] = GEN_INT (length
);
7072 operands
[4] = GEN_INT (length
+ 4);
7075 if (GET_MODE (operands
[0]) == DImode
)
7076 strcpy (buf
, "bb,*");
7078 strcpy (buf
, "bb,");
7079 if ((which
== 0 && negated
)
7080 || (which
== 1 && !negated
))
7085 strcat (buf
, ",n %0,%1,.+%4");
7087 strcat (buf
, " %0,%1,.+%4");
7088 output_asm_insn (buf
, operands
);
7089 return pa_output_lbranch (negated
? operands
[3] : operands
[2],
7095 /* This routine handles all the branch-on-variable-bit conditional branch
7096 sequences we might need to generate. It handles nullification of delay
7097 slots, varying length branches, negated branches and all combinations
7098 of the above. it returns the appropriate output template to emit the
7102 pa_output_bvb (rtx
*operands ATTRIBUTE_UNUSED
, int negated
, rtx_insn
*insn
,
7105 static char buf
[100];
7107 int nullify
= INSN_ANNULLED_BRANCH_P (insn
);
7108 int length
= get_attr_length (insn
);
7111 /* A conditional branch to the following instruction (e.g. the delay slot) is
7112 asking for a disaster. I do not think this can happen as this pattern
7113 is only used when optimizing; jump optimization should eliminate the
7114 jump. But be prepared just in case. */
7116 if (branch_to_delay_slot_p (insn
))
7119 /* If this is a long branch with its delay slot unfilled, set `nullify'
7120 as it can nullify the delay slot and save a nop. */
7121 if (length
== 8 && dbr_sequence_length () == 0)
7124 /* If this is a short forward conditional branch which did not get
7125 its delay slot filled, the delay slot can still be nullified. */
7126 if (! nullify
&& length
== 4 && dbr_sequence_length () == 0)
7127 nullify
= forward_branch_p (insn
);
7129 /* A forward branch over a single nullified insn can be done with a
7130 extrs instruction. This avoids a single cycle penalty due to
7131 mis-predicted branch if we fall through (branch not taken). */
7132 useskip
= (length
== 4 && nullify
) ? use_skip_p (insn
) : FALSE
;
7137 /* All short conditional branches except backwards with an unfilled
7141 strcpy (buf
, "{vextrs,|extrw,s,}");
7143 strcpy (buf
, "{bvb,|bb,}");
7144 if (useskip
&& GET_MODE (operands
[0]) == DImode
)
7145 strcpy (buf
, "extrd,s,*");
7146 else if (GET_MODE (operands
[0]) == DImode
)
7147 strcpy (buf
, "bb,*");
7148 if ((which
== 0 && negated
)
7149 || (which
== 1 && ! negated
))
7154 strcat (buf
, "{ %0,1,%%r0| %0,%%sar,1,%%r0}");
7155 else if (nullify
&& negated
)
7157 if (branch_needs_nop_p (insn
))
7158 strcat (buf
, "{,n %0,%3%#|,n %0,%%sar,%3%#}");
7160 strcat (buf
, "{,n %0,%3|,n %0,%%sar,%3}");
7162 else if (nullify
&& ! negated
)
7164 if (branch_needs_nop_p (insn
))
7165 strcat (buf
, "{,n %0,%2%#|,n %0,%%sar,%2%#}");
7167 strcat (buf
, "{,n %0,%2|,n %0,%%sar,%2}");
7169 else if (! nullify
&& negated
)
7170 strcat (buf
, "{ %0,%3| %0,%%sar,%3}");
7171 else if (! nullify
&& ! negated
)
7172 strcat (buf
, "{ %0,%2| %0,%%sar,%2}");
7175 /* All long conditionals. Note a short backward branch with an
7176 unfilled delay slot is treated just like a long backward branch
7177 with an unfilled delay slot. */
7179 /* Handle weird backwards branch with a filled delay slot
7180 which is nullified. */
7181 if (dbr_sequence_length () != 0
7182 && ! forward_branch_p (insn
)
7185 strcpy (buf
, "{bvb,|bb,}");
7186 if (GET_MODE (operands
[0]) == DImode
)
7188 if ((which
== 0 && negated
)
7189 || (which
== 1 && ! negated
))
7194 strcat (buf
, "{,n %0,.+12\n\tb %3|,n %0,%%sar,.+12\n\tb %3}");
7196 strcat (buf
, "{,n %0,.+12\n\tb %2|,n %0,%%sar,.+12\n\tb %2}");
7198 /* Handle short backwards branch with an unfilled delay slot.
7199 Using a bb;nop rather than extrs;bl saves 1 cycle for both
7200 taken and untaken branches. */
7201 else if (dbr_sequence_length () == 0
7202 && ! forward_branch_p (insn
)
7203 && INSN_ADDRESSES_SET_P ()
7204 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn
)))
7205 - INSN_ADDRESSES (INSN_UID (insn
)) - 8))
7207 strcpy (buf
, "{bvb,|bb,}");
7208 if (GET_MODE (operands
[0]) == DImode
)
7210 if ((which
== 0 && negated
)
7211 || (which
== 1 && ! negated
))
7216 strcat (buf
, "{ %0,%3%#| %0,%%sar,%3%#}");
7218 strcat (buf
, "{ %0,%2%#| %0,%%sar,%2%#}");
7222 strcpy (buf
, "{vextrs,|extrw,s,}");
7223 if (GET_MODE (operands
[0]) == DImode
)
7224 strcpy (buf
, "extrd,s,*");
7225 if ((which
== 0 && negated
)
7226 || (which
== 1 && ! negated
))
7230 if (nullify
&& negated
)
7231 strcat (buf
, "{ %0,1,%%r0\n\tb,n %3| %0,%%sar,1,%%r0\n\tb,n %3}");
7232 else if (nullify
&& ! negated
)
7233 strcat (buf
, "{ %0,1,%%r0\n\tb,n %2| %0,%%sar,1,%%r0\n\tb,n %2}");
7235 strcat (buf
, "{ %0,1,%%r0\n\tb %3| %0,%%sar,1,%%r0\n\tb %3}");
7237 strcat (buf
, "{ %0,1,%%r0\n\tb %2| %0,%%sar,1,%%r0\n\tb %2}");
7242 /* The reversed conditional branch must branch over one additional
7243 instruction if the delay slot is filled and needs to be extracted
7244 by pa_output_lbranch. If the delay slot is empty or this is a
7245 nullified forward branch, the instruction after the reversed
7246 condition branch must be nullified. */
7247 if (dbr_sequence_length () == 0
7248 || (nullify
&& forward_branch_p (insn
)))
7252 operands
[4] = GEN_INT (length
);
7257 operands
[4] = GEN_INT (length
+ 4);
7260 if (GET_MODE (operands
[0]) == DImode
)
7261 strcpy (buf
, "bb,*");
7263 strcpy (buf
, "{bvb,|bb,}");
7264 if ((which
== 0 && negated
)
7265 || (which
== 1 && !negated
))
7270 strcat (buf
, ",n {%0,.+%4|%0,%%sar,.+%4}");
7272 strcat (buf
, " {%0,.+%4|%0,%%sar,.+%4}");
7273 output_asm_insn (buf
, operands
);
7274 return pa_output_lbranch (negated
? operands
[3] : operands
[2],
7280 /* Return the output template for emitting a dbra type insn.
7282 Note it may perform some output operations on its own before
7283 returning the final output string. */
7285 pa_output_dbra (rtx
*operands
, rtx_insn
*insn
, int which_alternative
)
7287 int length
= get_attr_length (insn
);
7289 /* A conditional branch to the following instruction (e.g. the delay slot) is
7290 asking for a disaster. Be prepared! */
7292 if (branch_to_delay_slot_p (insn
))
7294 if (which_alternative
== 0)
7295 return "ldo %1(%0),%0";
7296 else if (which_alternative
== 1)
7298 output_asm_insn ("{fstws|fstw} %0,-16(%%r30)", operands
);
7299 output_asm_insn ("ldw -16(%%r30),%4", operands
);
7300 output_asm_insn ("ldo %1(%4),%4\n\tstw %4,-16(%%r30)", operands
);
7301 return "{fldws|fldw} -16(%%r30),%0";
7305 output_asm_insn ("ldw %0,%4", operands
);
7306 return "ldo %1(%4),%4\n\tstw %4,%0";
7310 if (which_alternative
== 0)
7312 int nullify
= INSN_ANNULLED_BRANCH_P (insn
);
7315 /* If this is a long branch with its delay slot unfilled, set `nullify'
7316 as it can nullify the delay slot and save a nop. */
7317 if (length
== 8 && dbr_sequence_length () == 0)
7320 /* If this is a short forward conditional branch which did not get
7321 its delay slot filled, the delay slot can still be nullified. */
7322 if (! nullify
&& length
== 4 && dbr_sequence_length () == 0)
7323 nullify
= forward_branch_p (insn
);
7330 if (branch_needs_nop_p (insn
))
7331 return "addib,%C2,n %1,%0,%3%#";
7333 return "addib,%C2,n %1,%0,%3";
7336 return "addib,%C2 %1,%0,%3";
7339 /* Handle weird backwards branch with a fulled delay slot
7340 which is nullified. */
7341 if (dbr_sequence_length () != 0
7342 && ! forward_branch_p (insn
)
7344 return "addib,%N2,n %1,%0,.+12\n\tb %3";
7345 /* Handle short backwards branch with an unfilled delay slot.
7346 Using a addb;nop rather than addi;bl saves 1 cycle for both
7347 taken and untaken branches. */
7348 else if (dbr_sequence_length () == 0
7349 && ! forward_branch_p (insn
)
7350 && INSN_ADDRESSES_SET_P ()
7351 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn
)))
7352 - INSN_ADDRESSES (INSN_UID (insn
)) - 8))
7353 return "addib,%C2 %1,%0,%3%#";
7355 /* Handle normal cases. */
7357 return "addi,%N2 %1,%0,%0\n\tb,n %3";
7359 return "addi,%N2 %1,%0,%0\n\tb %3";
7362 /* The reversed conditional branch must branch over one additional
7363 instruction if the delay slot is filled and needs to be extracted
7364 by pa_output_lbranch. If the delay slot is empty or this is a
7365 nullified forward branch, the instruction after the reversed
7366 condition branch must be nullified. */
7367 if (dbr_sequence_length () == 0
7368 || (nullify
&& forward_branch_p (insn
)))
7372 operands
[4] = GEN_INT (length
);
7377 operands
[4] = GEN_INT (length
+ 4);
7381 output_asm_insn ("addib,%N2,n %1,%0,.+%4", operands
);
7383 output_asm_insn ("addib,%N2 %1,%0,.+%4", operands
);
7385 return pa_output_lbranch (operands
[3], insn
, xdelay
);
7389 /* Deal with gross reload from FP register case. */
7390 else if (which_alternative
== 1)
7392 /* Move loop counter from FP register to MEM then into a GR,
7393 increment the GR, store the GR into MEM, and finally reload
7394 the FP register from MEM from within the branch's delay slot. */
7395 output_asm_insn ("{fstws|fstw} %0,-16(%%r30)\n\tldw -16(%%r30),%4",
7397 output_asm_insn ("ldo %1(%4),%4\n\tstw %4,-16(%%r30)", operands
);
7399 return "{comb|cmpb},%S2 %%r0,%4,%3\n\t{fldws|fldw} -16(%%r30),%0";
7400 else if (length
== 28)
7401 return "{comclr|cmpclr},%B2 %%r0,%4,%%r0\n\tb %3\n\t{fldws|fldw} -16(%%r30),%0";
7404 operands
[5] = GEN_INT (length
- 16);
7405 output_asm_insn ("{comb|cmpb},%B2 %%r0,%4,.+%5", operands
);
7406 output_asm_insn ("{fldws|fldw} -16(%%r30),%0", operands
);
7407 return pa_output_lbranch (operands
[3], insn
, 0);
7410 /* Deal with gross reload from memory case. */
7413 /* Reload loop counter from memory, the store back to memory
7414 happens in the branch's delay slot. */
7415 output_asm_insn ("ldw %0,%4", operands
);
7417 return "addib,%C2 %1,%4,%3\n\tstw %4,%0";
7418 else if (length
== 16)
7419 return "addi,%N2 %1,%4,%4\n\tb %3\n\tstw %4,%0";
7422 operands
[5] = GEN_INT (length
- 4);
7423 output_asm_insn ("addib,%N2 %1,%4,.+%5\n\tstw %4,%0", operands
);
7424 return pa_output_lbranch (operands
[3], insn
, 0);
7429 /* Return the output template for emitting a movb type insn.
7431 Note it may perform some output operations on its own before
7432 returning the final output string. */
7434 pa_output_movb (rtx
*operands
, rtx_insn
*insn
, int which_alternative
,
7435 int reverse_comparison
)
7437 int length
= get_attr_length (insn
);
7439 /* A conditional branch to the following instruction (e.g. the delay slot) is
7440 asking for a disaster. Be prepared! */
7442 if (branch_to_delay_slot_p (insn
))
7444 if (which_alternative
== 0)
7445 return "copy %1,%0";
7446 else if (which_alternative
== 1)
7448 output_asm_insn ("stw %1,-16(%%r30)", operands
);
7449 return "{fldws|fldw} -16(%%r30),%0";
7451 else if (which_alternative
== 2)
7457 /* Support the second variant. */
7458 if (reverse_comparison
)
7459 PUT_CODE (operands
[2], reverse_condition (GET_CODE (operands
[2])));
7461 if (which_alternative
== 0)
7463 int nullify
= INSN_ANNULLED_BRANCH_P (insn
);
7466 /* If this is a long branch with its delay slot unfilled, set `nullify'
7467 as it can nullify the delay slot and save a nop. */
7468 if (length
== 8 && dbr_sequence_length () == 0)
7471 /* If this is a short forward conditional branch which did not get
7472 its delay slot filled, the delay slot can still be nullified. */
7473 if (! nullify
&& length
== 4 && dbr_sequence_length () == 0)
7474 nullify
= forward_branch_p (insn
);
7481 if (branch_needs_nop_p (insn
))
7482 return "movb,%C2,n %1,%0,%3%#";
7484 return "movb,%C2,n %1,%0,%3";
7487 return "movb,%C2 %1,%0,%3";
7490 /* Handle weird backwards branch with a filled delay slot
7491 which is nullified. */
7492 if (dbr_sequence_length () != 0
7493 && ! forward_branch_p (insn
)
7495 return "movb,%N2,n %1,%0,.+12\n\tb %3";
7497 /* Handle short backwards branch with an unfilled delay slot.
7498 Using a movb;nop rather than or;bl saves 1 cycle for both
7499 taken and untaken branches. */
7500 else if (dbr_sequence_length () == 0
7501 && ! forward_branch_p (insn
)
7502 && INSN_ADDRESSES_SET_P ()
7503 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn
)))
7504 - INSN_ADDRESSES (INSN_UID (insn
)) - 8))
7505 return "movb,%C2 %1,%0,%3%#";
7506 /* Handle normal cases. */
7508 return "or,%N2 %1,%%r0,%0\n\tb,n %3";
7510 return "or,%N2 %1,%%r0,%0\n\tb %3";
7513 /* The reversed conditional branch must branch over one additional
7514 instruction if the delay slot is filled and needs to be extracted
7515 by pa_output_lbranch. If the delay slot is empty or this is a
7516 nullified forward branch, the instruction after the reversed
7517 condition branch must be nullified. */
7518 if (dbr_sequence_length () == 0
7519 || (nullify
&& forward_branch_p (insn
)))
7523 operands
[4] = GEN_INT (length
);
7528 operands
[4] = GEN_INT (length
+ 4);
7532 output_asm_insn ("movb,%N2,n %1,%0,.+%4", operands
);
7534 output_asm_insn ("movb,%N2 %1,%0,.+%4", operands
);
7536 return pa_output_lbranch (operands
[3], insn
, xdelay
);
7539 /* Deal with gross reload for FP destination register case. */
7540 else if (which_alternative
== 1)
7542 /* Move source register to MEM, perform the branch test, then
7543 finally load the FP register from MEM from within the branch's
7545 output_asm_insn ("stw %1,-16(%%r30)", operands
);
7547 return "{comb|cmpb},%S2 %%r0,%1,%3\n\t{fldws|fldw} -16(%%r30),%0";
7548 else if (length
== 16)
7549 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\t{fldws|fldw} -16(%%r30),%0";
7552 operands
[4] = GEN_INT (length
- 4);
7553 output_asm_insn ("{comb|cmpb},%B2 %%r0,%1,.+%4", operands
);
7554 output_asm_insn ("{fldws|fldw} -16(%%r30),%0", operands
);
7555 return pa_output_lbranch (operands
[3], insn
, 0);
7558 /* Deal with gross reload from memory case. */
7559 else if (which_alternative
== 2)
7561 /* Reload loop counter from memory, the store back to memory
7562 happens in the branch's delay slot. */
7564 return "{comb|cmpb},%S2 %%r0,%1,%3\n\tstw %1,%0";
7565 else if (length
== 12)
7566 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\tstw %1,%0";
7569 operands
[4] = GEN_INT (length
);
7570 output_asm_insn ("{comb|cmpb},%B2 %%r0,%1,.+%4\n\tstw %1,%0",
7572 return pa_output_lbranch (operands
[3], insn
, 0);
7575 /* Handle SAR as a destination. */
7579 return "{comb|cmpb},%S2 %%r0,%1,%3\n\tmtsar %r1";
7580 else if (length
== 12)
7581 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\tmtsar %r1";
7584 operands
[4] = GEN_INT (length
);
7585 output_asm_insn ("{comb|cmpb},%B2 %%r0,%1,.+%4\n\tmtsar %r1",
7587 return pa_output_lbranch (operands
[3], insn
, 0);
7592 /* Copy any FP arguments in INSN into integer registers. */
7594 copy_fp_args (rtx_insn
*insn
)
7599 for (link
= CALL_INSN_FUNCTION_USAGE (insn
); link
; link
= XEXP (link
, 1))
7601 int arg_mode
, regno
;
7602 rtx use
= XEXP (link
, 0);
7604 if (! (GET_CODE (use
) == USE
7605 && GET_CODE (XEXP (use
, 0)) == REG
7606 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use
, 0)))))
7609 arg_mode
= GET_MODE (XEXP (use
, 0));
7610 regno
= REGNO (XEXP (use
, 0));
7612 /* Is it a floating point register? */
7613 if (regno
>= 32 && regno
<= 39)
7615 /* Copy the FP register into an integer register via memory. */
7616 if (arg_mode
== SFmode
)
7618 xoperands
[0] = XEXP (use
, 0);
7619 xoperands
[1] = gen_rtx_REG (SImode
, 26 - (regno
- 32) / 2);
7620 output_asm_insn ("{fstws|fstw} %0,-16(%%sr0,%%r30)", xoperands
);
7621 output_asm_insn ("ldw -16(%%sr0,%%r30),%1", xoperands
);
7625 xoperands
[0] = XEXP (use
, 0);
7626 xoperands
[1] = gen_rtx_REG (DImode
, 25 - (regno
- 34) / 2);
7627 output_asm_insn ("{fstds|fstd} %0,-16(%%sr0,%%r30)", xoperands
);
7628 output_asm_insn ("ldw -12(%%sr0,%%r30),%R1", xoperands
);
7629 output_asm_insn ("ldw -16(%%sr0,%%r30),%1", xoperands
);
7635 /* Compute length of the FP argument copy sequence for INSN. */
7637 length_fp_args (rtx_insn
*insn
)
7642 for (link
= CALL_INSN_FUNCTION_USAGE (insn
); link
; link
= XEXP (link
, 1))
7644 int arg_mode
, regno
;
7645 rtx use
= XEXP (link
, 0);
7647 if (! (GET_CODE (use
) == USE
7648 && GET_CODE (XEXP (use
, 0)) == REG
7649 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use
, 0)))))
7652 arg_mode
= GET_MODE (XEXP (use
, 0));
7653 regno
= REGNO (XEXP (use
, 0));
7655 /* Is it a floating point register? */
7656 if (regno
>= 32 && regno
<= 39)
7658 if (arg_mode
== SFmode
)
7668 /* Return the attribute length for the millicode call instruction INSN.
7669 The length must match the code generated by pa_output_millicode_call.
7670 We include the delay slot in the returned length as it is better to
7671 over estimate the length than to under estimate it. */
7674 pa_attr_length_millicode_call (rtx_insn
*insn
)
7676 unsigned long distance
= -1;
7677 unsigned long total
= IN_NAMED_SECTION_P (cfun
->decl
) ? 0 : total_code_bytes
;
7679 if (INSN_ADDRESSES_SET_P ())
7681 distance
= (total
+ insn_current_reference_address (insn
));
7682 if (distance
< total
)
7688 if (!TARGET_LONG_CALLS
&& distance
< 7600000)
7693 else if (TARGET_PORTABLE_RUNTIME
)
7697 if (!TARGET_LONG_CALLS
&& distance
< MAX_PCREL17F_OFFSET
)
7707 /* INSN is a function call.
7709 CALL_DEST is the routine we are calling. */
7712 pa_output_millicode_call (rtx_insn
*insn
, rtx call_dest
)
7714 int attr_length
= get_attr_length (insn
);
7715 int seq_length
= dbr_sequence_length ();
7718 xoperands
[0] = call_dest
;
7720 /* Handle the common case where we are sure that the branch will
7721 reach the beginning of the $CODE$ subspace. The within reach
7722 form of the $$sh_func_adrs call has a length of 28. Because it
7723 has an attribute type of sh_func_adrs, it never has a nonzero
7724 sequence length (i.e., the delay slot is never filled). */
7725 if (!TARGET_LONG_CALLS
7726 && (attr_length
== 8
7727 || (attr_length
== 28
7728 && get_attr_type (insn
) == TYPE_SH_FUNC_ADRS
)))
7730 xoperands
[1] = gen_rtx_REG (Pmode
, TARGET_64BIT
? 2 : 31);
7731 output_asm_insn ("{bl|b,l} %0,%1", xoperands
);
7737 /* It might seem that one insn could be saved by accessing
7738 the millicode function using the linkage table. However,
7739 this doesn't work in shared libraries and other dynamically
7740 loaded objects. Using a pc-relative sequence also avoids
7741 problems related to the implicit use of the gp register. */
7742 xoperands
[1] = gen_rtx_REG (Pmode
, 1);
7743 xoperands
[2] = xoperands
[1];
7744 pa_output_pic_pcrel_sequence (xoperands
);
7745 output_asm_insn ("bve,l (%%r1),%%r2", xoperands
);
7747 else if (TARGET_PORTABLE_RUNTIME
)
7749 /* Pure portable runtime doesn't allow be/ble; we also don't
7750 have PIC support in the assembler/linker, so this sequence
7753 /* Get the address of our target into %r1. */
7754 output_asm_insn ("ldil L'%0,%%r1", xoperands
);
7755 output_asm_insn ("ldo R'%0(%%r1),%%r1", xoperands
);
7757 /* Get our return address into %r31. */
7758 output_asm_insn ("{bl|b,l} .+8,%%r31", xoperands
);
7759 output_asm_insn ("addi 8,%%r31,%%r31", xoperands
);
7761 /* Jump to our target address in %r1. */
7762 output_asm_insn ("bv %%r0(%%r1)", xoperands
);
7766 output_asm_insn ("ldil L'%0,%%r1", xoperands
);
7768 output_asm_insn ("be,l R'%0(%%sr4,%%r1),%%sr0,%%r31", xoperands
);
7770 output_asm_insn ("ble R'%0(%%sr4,%%r1)", xoperands
);
7774 xoperands
[1] = gen_rtx_REG (Pmode
, 31);
7775 xoperands
[2] = gen_rtx_REG (Pmode
, 1);
7776 pa_output_pic_pcrel_sequence (xoperands
);
7778 /* Adjust return address. */
7779 output_asm_insn ("ldo {16|24}(%%r31),%%r31", xoperands
);
7781 /* Jump to our target address in %r1. */
7782 output_asm_insn ("bv %%r0(%%r1)", xoperands
);
7786 if (seq_length
== 0)
7787 output_asm_insn ("nop", xoperands
);
7792 /* Return the attribute length of the call instruction INSN. The SIBCALL
7793 flag indicates whether INSN is a regular call or a sibling call. The
7794 length returned must be longer than the code actually generated by
7795 pa_output_call. Since branch shortening is done before delay branch
7796 sequencing, there is no way to determine whether or not the delay
7797 slot will be filled during branch shortening. Even when the delay
7798 slot is filled, we may have to add a nop if the delay slot contains
7799 a branch that can't reach its target. Thus, we always have to include
7800 the delay slot in the length estimate. This used to be done in
7801 pa_adjust_insn_length but we do it here now as some sequences always
7802 fill the delay slot and we can save four bytes in the estimate for
7806 pa_attr_length_call (rtx_insn
*insn
, int sibcall
)
7809 rtx call
, call_dest
;
7812 rtx pat
= PATTERN (insn
);
7813 unsigned long distance
= -1;
7815 gcc_assert (CALL_P (insn
));
7817 if (INSN_ADDRESSES_SET_P ())
7819 unsigned long total
;
7821 total
= IN_NAMED_SECTION_P (cfun
->decl
) ? 0 : total_code_bytes
;
7822 distance
= (total
+ insn_current_reference_address (insn
));
7823 if (distance
< total
)
7827 gcc_assert (GET_CODE (pat
) == PARALLEL
);
7829 /* Get the call rtx. */
7830 call
= XVECEXP (pat
, 0, 0);
7831 if (GET_CODE (call
) == SET
)
7832 call
= SET_SRC (call
);
7834 gcc_assert (GET_CODE (call
) == CALL
);
7836 /* Determine if this is a local call. */
7837 call_dest
= XEXP (XEXP (call
, 0), 0);
7838 call_decl
= SYMBOL_REF_DECL (call_dest
);
7839 local_call
= call_decl
&& targetm
.binds_local_p (call_decl
);
7841 /* pc-relative branch. */
7842 if (!TARGET_LONG_CALLS
7843 && ((TARGET_PA_20
&& !sibcall
&& distance
< 7600000)
7844 || distance
< MAX_PCREL17F_OFFSET
))
7847 /* 64-bit plabel sequence. */
7848 else if (TARGET_64BIT
&& !local_call
)
7849 length
+= sibcall
? 28 : 24;
7851 /* non-pic long absolute branch sequence. */
7852 else if ((TARGET_LONG_ABS_CALL
|| local_call
) && !flag_pic
)
7855 /* long pc-relative branch sequence. */
7856 else if (TARGET_LONG_PIC_SDIFF_CALL
7857 || (TARGET_GAS
&& !TARGET_SOM
&& local_call
))
7861 if (!TARGET_PA_20
&& !TARGET_NO_SPACE_REGS
&& (!local_call
|| flag_pic
))
7865 /* 32-bit plabel sequence. */
7871 length
+= length_fp_args (insn
);
7881 if (!TARGET_NO_SPACE_REGS
&& (!local_call
|| flag_pic
))
7889 /* INSN is a function call.
7891 CALL_DEST is the routine we are calling. */
7894 pa_output_call (rtx_insn
*insn
, rtx call_dest
, int sibcall
)
7896 int seq_length
= dbr_sequence_length ();
7897 tree call_decl
= SYMBOL_REF_DECL (call_dest
);
7898 int local_call
= call_decl
&& targetm
.binds_local_p (call_decl
);
7901 xoperands
[0] = call_dest
;
7903 /* Handle the common case where we're sure that the branch will reach
7904 the beginning of the "$CODE$" subspace. This is the beginning of
7905 the current function if we are in a named section. */
7906 if (!TARGET_LONG_CALLS
&& pa_attr_length_call (insn
, sibcall
) == 8)
7908 xoperands
[1] = gen_rtx_REG (word_mode
, sibcall
? 0 : 2);
7909 output_asm_insn ("{bl|b,l} %0,%1", xoperands
);
7913 if (TARGET_64BIT
&& !local_call
)
7915 /* ??? As far as I can tell, the HP linker doesn't support the
7916 long pc-relative sequence described in the 64-bit runtime
7917 architecture. So, we use a slightly longer indirect call. */
7918 xoperands
[0] = pa_get_deferred_plabel (call_dest
);
7919 xoperands
[1] = gen_label_rtx ();
7921 /* If this isn't a sibcall, we put the load of %r27 into the
7922 delay slot. We can't do this in a sibcall as we don't
7923 have a second call-clobbered scratch register available.
7924 We don't need to do anything when generating fast indirect
7926 if (seq_length
!= 0 && !sibcall
)
7928 final_scan_insn (NEXT_INSN (insn
), asm_out_file
,
7931 /* Now delete the delay insn. */
7932 SET_INSN_DELETED (NEXT_INSN (insn
));
7936 output_asm_insn ("addil LT'%0,%%r27", xoperands
);
7937 output_asm_insn ("ldd RT'%0(%%r1),%%r1", xoperands
);
7938 output_asm_insn ("ldd 0(%%r1),%%r1", xoperands
);
7942 output_asm_insn ("ldd 24(%%r1),%%r27", xoperands
);
7943 output_asm_insn ("ldd 16(%%r1),%%r1", xoperands
);
7944 output_asm_insn ("bve (%%r1)", xoperands
);
7948 output_asm_insn ("ldd 16(%%r1),%%r2", xoperands
);
7949 output_asm_insn ("bve,l (%%r2),%%r2", xoperands
);
7950 output_asm_insn ("ldd 24(%%r1),%%r27", xoperands
);
7956 int indirect_call
= 0;
7958 /* Emit a long call. There are several different sequences
7959 of increasing length and complexity. In most cases,
7960 they don't allow an instruction in the delay slot. */
7961 if (!((TARGET_LONG_ABS_CALL
|| local_call
) && !flag_pic
)
7962 && !TARGET_LONG_PIC_SDIFF_CALL
7963 && !(TARGET_GAS
&& !TARGET_SOM
&& local_call
)
7971 || ((TARGET_LONG_ABS_CALL
|| local_call
) && !flag_pic
)))
7973 /* A non-jump insn in the delay slot. By definition we can
7974 emit this insn before the call (and in fact before argument
7976 final_scan_insn (NEXT_INSN (insn
), asm_out_file
, optimize
, 0,
7979 /* Now delete the delay insn. */
7980 SET_INSN_DELETED (NEXT_INSN (insn
));
7984 if ((TARGET_LONG_ABS_CALL
|| local_call
) && !flag_pic
)
7986 /* This is the best sequence for making long calls in
7987 non-pic code. Unfortunately, GNU ld doesn't provide
7988 the stub needed for external calls, and GAS's support
7989 for this with the SOM linker is buggy. It is safe
7990 to use this for local calls. */
7991 output_asm_insn ("ldil L'%0,%%r1", xoperands
);
7993 output_asm_insn ("be R'%0(%%sr4,%%r1)", xoperands
);
7997 output_asm_insn ("be,l R'%0(%%sr4,%%r1),%%sr0,%%r31",
8000 output_asm_insn ("ble R'%0(%%sr4,%%r1)", xoperands
);
8002 output_asm_insn ("copy %%r31,%%r2", xoperands
);
8008 /* The HP assembler and linker can handle relocations for
8009 the difference of two symbols. The HP assembler
8010 recognizes the sequence as a pc-relative call and
8011 the linker provides stubs when needed. */
8013 /* GAS currently can't generate the relocations that
8014 are needed for the SOM linker under HP-UX using this
8015 sequence. The GNU linker doesn't generate the stubs
8016 that are needed for external calls on TARGET_ELF32
8017 with this sequence. For now, we have to use a longer
8018 plabel sequence when using GAS for non local calls. */
8019 if (TARGET_LONG_PIC_SDIFF_CALL
8020 || (TARGET_GAS
&& !TARGET_SOM
&& local_call
))
8022 xoperands
[1] = gen_rtx_REG (Pmode
, 1);
8023 xoperands
[2] = xoperands
[1];
8024 pa_output_pic_pcrel_sequence (xoperands
);
8028 /* Emit a long plabel-based call sequence. This is
8029 essentially an inline implementation of $$dyncall.
8030 We don't actually try to call $$dyncall as this is
8031 as difficult as calling the function itself. */
8032 xoperands
[0] = pa_get_deferred_plabel (call_dest
);
8033 xoperands
[1] = gen_label_rtx ();
8035 /* Since the call is indirect, FP arguments in registers
8036 need to be copied to the general registers. Then, the
8037 argument relocation stub will copy them back. */
8039 copy_fp_args (insn
);
8043 output_asm_insn ("addil LT'%0,%%r19", xoperands
);
8044 output_asm_insn ("ldw RT'%0(%%r1),%%r1", xoperands
);
8045 output_asm_insn ("ldw 0(%%r1),%%r1", xoperands
);
8049 output_asm_insn ("addil LR'%0-$global$,%%r27",
8051 output_asm_insn ("ldw RR'%0-$global$(%%r1),%%r1",
8055 output_asm_insn ("bb,>=,n %%r1,30,.+16", xoperands
);
8056 output_asm_insn ("depi 0,31,2,%%r1", xoperands
);
8057 output_asm_insn ("ldw 4(%%sr0,%%r1),%%r19", xoperands
);
8058 output_asm_insn ("ldw 0(%%sr0,%%r1),%%r1", xoperands
);
8060 if (!sibcall
&& !TARGET_PA_20
)
8062 output_asm_insn ("{bl|b,l} .+8,%%r2", xoperands
);
8063 if (TARGET_NO_SPACE_REGS
|| (local_call
&& !flag_pic
))
8064 output_asm_insn ("addi 8,%%r2,%%r2", xoperands
);
8066 output_asm_insn ("addi 16,%%r2,%%r2", xoperands
);
8073 output_asm_insn ("bve (%%r1)", xoperands
);
8078 output_asm_insn ("bve,l (%%r1),%%r2", xoperands
);
8079 output_asm_insn ("stw %%r2,-24(%%sp)", xoperands
);
8083 output_asm_insn ("bve,l (%%r1),%%r2", xoperands
);
8088 if (!TARGET_NO_SPACE_REGS
&& (!local_call
|| flag_pic
))
8089 output_asm_insn ("ldsid (%%r1),%%r31\n\tmtsp %%r31,%%sr0",
8094 if (TARGET_NO_SPACE_REGS
|| (local_call
&& !flag_pic
))
8095 output_asm_insn ("be 0(%%sr4,%%r1)", xoperands
);
8097 output_asm_insn ("be 0(%%sr0,%%r1)", xoperands
);
8101 if (TARGET_NO_SPACE_REGS
|| (local_call
&& !flag_pic
))
8102 output_asm_insn ("ble 0(%%sr4,%%r1)", xoperands
);
8104 output_asm_insn ("ble 0(%%sr0,%%r1)", xoperands
);
8107 output_asm_insn ("stw %%r31,-24(%%sp)", xoperands
);
8109 output_asm_insn ("copy %%r31,%%r2", xoperands
);
8117 if (seq_length
== 0)
8118 output_asm_insn ("nop", xoperands
);
8123 /* Return the attribute length of the indirect call instruction INSN.
8124 The length must match the code generated by output_indirect call.
8125 The returned length includes the delay slot. Currently, the delay
8126 slot of an indirect call sequence is not exposed and it is used by
8127 the sequence itself. */
8130 pa_attr_length_indirect_call (rtx_insn
*insn
)
8132 unsigned long distance
= -1;
8133 unsigned long total
= IN_NAMED_SECTION_P (cfun
->decl
) ? 0 : total_code_bytes
;
8135 if (INSN_ADDRESSES_SET_P ())
8137 distance
= (total
+ insn_current_reference_address (insn
));
8138 if (distance
< total
)
8145 if (TARGET_FAST_INDIRECT_CALLS
)
8148 if (TARGET_PORTABLE_RUNTIME
)
8151 /* Inline version of $$dyncall. */
8152 if ((TARGET_NO_SPACE_REGS
|| TARGET_PA_20
) && !optimize_size
)
8155 if (!TARGET_LONG_CALLS
8156 && ((TARGET_PA_20
&& !TARGET_SOM
&& distance
< 7600000)
8157 || distance
< MAX_PCREL17F_OFFSET
))
8160 /* Out of reach, can use ble. */
8164 /* Inline version of $$dyncall. */
8165 if (TARGET_NO_SPACE_REGS
|| TARGET_PA_20
)
8171 /* Long PIC pc-relative call. */
8176 pa_output_indirect_call (rtx_insn
*insn
, rtx call_dest
)
8183 xoperands
[0] = call_dest
;
8184 output_asm_insn ("ldd 16(%0),%%r2\n\t"
8185 "bve,l (%%r2),%%r2\n\t"
8186 "ldd 24(%0),%%r27", xoperands
);
8190 /* First the special case for kernels, level 0 systems, etc. */
8191 if (TARGET_FAST_INDIRECT_CALLS
)
8193 pa_output_arg_descriptor (insn
);
8195 return "bve,l,n (%%r22),%%r2\n\tnop";
8196 return "ble 0(%%sr4,%%r22)\n\tcopy %%r31,%%r2";
8199 if (TARGET_PORTABLE_RUNTIME
)
8201 output_asm_insn ("ldil L'$$dyncall,%%r31\n\t"
8202 "ldo R'$$dyncall(%%r31),%%r31", xoperands
);
8203 pa_output_arg_descriptor (insn
);
8204 return "blr %%r0,%%r2\n\tbv,n %%r0(%%r31)";
8207 /* Maybe emit a fast inline version of $$dyncall. */
8208 if ((TARGET_NO_SPACE_REGS
|| TARGET_PA_20
) && !optimize_size
)
8210 output_asm_insn ("bb,>=,n %%r22,30,.+12\n\t"
8211 "ldw 2(%%r22),%%r19\n\t"
8212 "ldw -2(%%r22),%%r22", xoperands
);
8213 pa_output_arg_descriptor (insn
);
8214 if (TARGET_NO_SPACE_REGS
)
8217 return "bve,l,n (%%r22),%%r2\n\tnop";
8218 return "ble 0(%%sr4,%%r22)\n\tcopy %%r31,%%r2";
8220 return "bve,l (%%r22),%%r2\n\tstw %%r2,-24(%%sp)";
8223 /* Now the normal case -- we can reach $$dyncall directly or
8224 we're sure that we can get there via a long-branch stub.
8226 No need to check target flags as the length uniquely identifies
8227 the remaining cases. */
8228 length
= pa_attr_length_indirect_call (insn
);
8231 pa_output_arg_descriptor (insn
);
8233 /* The HP linker sometimes substitutes a BLE for BL/B,L calls to
8234 $$dyncall. Since BLE uses %r31 as the link register, the 22-bit
8235 variant of the B,L instruction can't be used on the SOM target. */
8236 if (TARGET_PA_20
&& !TARGET_SOM
)
8237 return "b,l,n $$dyncall,%%r2\n\tnop";
8239 return "bl $$dyncall,%%r31\n\tcopy %%r31,%%r2";
8242 /* Long millicode call, but we are not generating PIC or portable runtime
8246 output_asm_insn ("ldil L'$$dyncall,%%r2", xoperands
);
8247 pa_output_arg_descriptor (insn
);
8248 return "ble R'$$dyncall(%%sr4,%%r2)\n\tcopy %%r31,%%r2";
8251 /* Maybe emit a fast inline version of $$dyncall. The long PIC
8252 pc-relative call sequence is five instructions. The inline PA 2.0
8253 version of $$dyncall is also five instructions. The PA 1.X versions
8254 are longer but still an overall win. */
8255 if (TARGET_NO_SPACE_REGS
|| TARGET_PA_20
|| !optimize_size
)
8257 output_asm_insn ("bb,>=,n %%r22,30,.+12\n\t"
8258 "ldw 2(%%r22),%%r19\n\t"
8259 "ldw -2(%%r22),%%r22", xoperands
);
8260 if (TARGET_NO_SPACE_REGS
)
8262 pa_output_arg_descriptor (insn
);
8264 return "bve,l,n (%%r22),%%r2\n\tnop";
8265 return "ble 0(%%sr4,%%r22)\n\tcopy %%r31,%%r2";
8269 pa_output_arg_descriptor (insn
);
8270 return "bve,l (%%r22),%%r2\n\tstw %%r2,-24(%%sp)";
8272 output_asm_insn ("bl .+8,%%r2\n\t"
8273 "ldo 16(%%r2),%%r2\n\t"
8274 "ldsid (%%r22),%%r1\n\t"
8275 "mtsp %%r1,%%sr0", xoperands
);
8276 pa_output_arg_descriptor (insn
);
8277 return "be 0(%%sr0,%%r22)\n\tstw %%r2,-24(%%sp)";
8280 /* We need a long PIC call to $$dyncall. */
8281 xoperands
[0] = gen_rtx_SYMBOL_REF (Pmode
, "$$dyncall");
8282 xoperands
[1] = gen_rtx_REG (Pmode
, 2);
8283 xoperands
[2] = gen_rtx_REG (Pmode
, 1);
8284 pa_output_pic_pcrel_sequence (xoperands
);
8285 pa_output_arg_descriptor (insn
);
8286 return "bv %%r0(%%r1)\n\tldo {12|20}(%%r2),%%r2";
8289 /* In HPUX 8.0's shared library scheme, special relocations are needed
8290 for function labels if they might be passed to a function
8291 in a shared library (because shared libraries don't live in code
8292 space), and special magic is needed to construct their address. */
8295 pa_encode_label (rtx sym
)
8297 const char *str
= XSTR (sym
, 0);
8298 int len
= strlen (str
) + 1;
8301 p
= newstr
= XALLOCAVEC (char, len
+ 1);
8305 XSTR (sym
, 0) = ggc_alloc_string (newstr
, len
);
8309 pa_encode_section_info (tree decl
, rtx rtl
, int first
)
8311 int old_referenced
= 0;
8313 if (!first
&& MEM_P (rtl
) && GET_CODE (XEXP (rtl
, 0)) == SYMBOL_REF
)
8315 = SYMBOL_REF_FLAGS (XEXP (rtl
, 0)) & SYMBOL_FLAG_REFERENCED
;
8317 default_encode_section_info (decl
, rtl
, first
);
8319 if (first
&& TEXT_SPACE_P (decl
))
8321 SYMBOL_REF_FLAG (XEXP (rtl
, 0)) = 1;
8322 if (TREE_CODE (decl
) == FUNCTION_DECL
)
8323 pa_encode_label (XEXP (rtl
, 0));
8325 else if (old_referenced
)
8326 SYMBOL_REF_FLAGS (XEXP (rtl
, 0)) |= old_referenced
;
8329 /* This is sort of inverse to pa_encode_section_info. */
8332 pa_strip_name_encoding (const char *str
)
8334 str
+= (*str
== '@');
8335 str
+= (*str
== '*');
8339 /* Returns 1 if OP is a function label involved in a simple addition
8340 with a constant. Used to keep certain patterns from matching
8341 during instruction combination. */
8343 pa_is_function_label_plus_const (rtx op
)
8345 /* Strip off any CONST. */
8346 if (GET_CODE (op
) == CONST
)
8349 return (GET_CODE (op
) == PLUS
8350 && function_label_operand (XEXP (op
, 0), VOIDmode
)
8351 && GET_CODE (XEXP (op
, 1)) == CONST_INT
);
8354 /* Output assembly code for a thunk to FUNCTION. */
8357 pa_asm_output_mi_thunk (FILE *file
, tree thunk_fndecl
, HOST_WIDE_INT delta
,
8358 HOST_WIDE_INT vcall_offset ATTRIBUTE_UNUSED
,
8361 const char *fnname
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk_fndecl
));
8362 static unsigned int current_thunk_number
;
8363 int val_14
= VAL_14_BITS_P (delta
);
8364 unsigned int old_last_address
= last_address
, nbytes
= 0;
8368 xoperands
[0] = XEXP (DECL_RTL (function
), 0);
8369 xoperands
[1] = XEXP (DECL_RTL (thunk_fndecl
), 0);
8370 xoperands
[2] = GEN_INT (delta
);
8372 assemble_start_function (thunk_fndecl
, fnname
);
8373 final_start_function (emit_barrier (), file
, 1);
8375 /* Output the thunk. We know that the function is in the same
8376 translation unit (i.e., the same space) as the thunk, and that
8377 thunks are output after their method. Thus, we don't need an
8378 external branch to reach the function. With SOM and GAS,
8379 functions and thunks are effectively in different sections.
8380 Thus, we can always use a IA-relative branch and the linker
8381 will add a long branch stub if necessary.
8383 However, we have to be careful when generating PIC code on the
8384 SOM port to ensure that the sequence does not transfer to an
8385 import stub for the target function as this could clobber the
8386 return value saved at SP-24. This would also apply to the
8387 32-bit linux port if the multi-space model is implemented. */
8388 if ((!TARGET_LONG_CALLS
&& TARGET_SOM
&& !TARGET_PORTABLE_RUNTIME
8389 && !(flag_pic
&& TREE_PUBLIC (function
))
8390 && (TARGET_GAS
|| last_address
< 262132))
8391 || (!TARGET_LONG_CALLS
&& !TARGET_SOM
&& !TARGET_PORTABLE_RUNTIME
8392 && ((targetm_common
.have_named_sections
8393 && DECL_SECTION_NAME (thunk_fndecl
) != NULL
8394 /* The GNU 64-bit linker has rather poor stub management.
8395 So, we use a long branch from thunks that aren't in
8396 the same section as the target function. */
8398 && (DECL_SECTION_NAME (thunk_fndecl
)
8399 != DECL_SECTION_NAME (function
)))
8400 || ((DECL_SECTION_NAME (thunk_fndecl
)
8401 == DECL_SECTION_NAME (function
))
8402 && last_address
< 262132)))
8403 /* In this case, we need to be able to reach the start of
8404 the stub table even though the function is likely closer
8405 and can be jumped to directly. */
8406 || (targetm_common
.have_named_sections
8407 && DECL_SECTION_NAME (thunk_fndecl
) == NULL
8408 && DECL_SECTION_NAME (function
) == NULL
8409 && total_code_bytes
< MAX_PCREL17F_OFFSET
)
8411 || (!targetm_common
.have_named_sections
8412 && total_code_bytes
< MAX_PCREL17F_OFFSET
))))
8415 output_asm_insn ("addil L'%2,%%r26", xoperands
);
8417 output_asm_insn ("b %0", xoperands
);
8421 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8426 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands
);
8430 else if (TARGET_64BIT
)
8434 /* We only have one call-clobbered scratch register, so we can't
8435 make use of the delay slot if delta doesn't fit in 14 bits. */
8438 output_asm_insn ("addil L'%2,%%r26", xoperands
);
8439 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands
);
8442 /* Load function address into %r1. */
8443 xop
[0] = xoperands
[0];
8444 xop
[1] = gen_rtx_REG (Pmode
, 1);
8446 pa_output_pic_pcrel_sequence (xop
);
8450 output_asm_insn ("bv %%r0(%%r1)", xoperands
);
8451 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8456 output_asm_insn ("bv,n %%r0(%%r1)", xoperands
);
8460 else if (TARGET_PORTABLE_RUNTIME
)
8462 output_asm_insn ("ldil L'%0,%%r1", xoperands
);
8463 output_asm_insn ("ldo R'%0(%%r1),%%r22", xoperands
);
8466 output_asm_insn ("ldil L'%2,%%r26", xoperands
);
8468 output_asm_insn ("bv %%r0(%%r22)", xoperands
);
8472 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8477 output_asm_insn ("ldo R'%2(%%r26),%%r26", xoperands
);
8481 else if (TARGET_SOM
&& flag_pic
&& TREE_PUBLIC (function
))
8483 /* The function is accessible from outside this module. The only
8484 way to avoid an import stub between the thunk and function is to
8485 call the function directly with an indirect sequence similar to
8486 that used by $$dyncall. This is possible because $$dyncall acts
8487 as the import stub in an indirect call. */
8488 ASM_GENERATE_INTERNAL_LABEL (label
, "LTHN", current_thunk_number
);
8489 xoperands
[3] = gen_rtx_SYMBOL_REF (Pmode
, label
);
8490 output_asm_insn ("addil LT'%3,%%r19", xoperands
);
8491 output_asm_insn ("ldw RT'%3(%%r1),%%r22", xoperands
);
8492 output_asm_insn ("ldw 0(%%sr0,%%r22),%%r22", xoperands
);
8493 output_asm_insn ("bb,>=,n %%r22,30,.+16", xoperands
);
8494 output_asm_insn ("depi 0,31,2,%%r22", xoperands
);
8495 output_asm_insn ("ldw 4(%%sr0,%%r22),%%r19", xoperands
);
8496 output_asm_insn ("ldw 0(%%sr0,%%r22),%%r22", xoperands
);
8500 output_asm_insn ("addil L'%2,%%r26", xoperands
);
8506 output_asm_insn ("bve (%%r22)", xoperands
);
8509 else if (TARGET_NO_SPACE_REGS
)
8511 output_asm_insn ("be 0(%%sr4,%%r22)", xoperands
);
8516 output_asm_insn ("ldsid (%%sr0,%%r22),%%r21", xoperands
);
8517 output_asm_insn ("mtsp %%r21,%%sr0", xoperands
);
8518 output_asm_insn ("be 0(%%sr0,%%r22)", xoperands
);
8523 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8525 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands
);
8531 /* Load function address into %r22. */
8532 xop
[0] = xoperands
[0];
8533 xop
[1] = gen_rtx_REG (Pmode
, 1);
8534 xop
[2] = gen_rtx_REG (Pmode
, 22);
8535 pa_output_pic_pcrel_sequence (xop
);
8538 output_asm_insn ("addil L'%2,%%r26", xoperands
);
8540 output_asm_insn ("bv %%r0(%%r22)", xoperands
);
8544 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8549 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands
);
8556 output_asm_insn ("addil L'%2,%%r26", xoperands
);
8558 output_asm_insn ("ldil L'%0,%%r22", xoperands
);
8559 output_asm_insn ("be R'%0(%%sr4,%%r22)", xoperands
);
8563 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands
);
8568 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands
);
8573 final_end_function ();
8575 if (TARGET_SOM
&& flag_pic
&& TREE_PUBLIC (function
))
8577 switch_to_section (data_section
);
8578 output_asm_insn (".align 4", xoperands
);
8579 ASM_OUTPUT_LABEL (file
, label
);
8580 output_asm_insn (".word P'%0", xoperands
);
8583 current_thunk_number
++;
8584 nbytes
= ((nbytes
+ FUNCTION_BOUNDARY
/ BITS_PER_UNIT
- 1)
8585 & ~(FUNCTION_BOUNDARY
/ BITS_PER_UNIT
- 1));
8586 last_address
+= nbytes
;
8587 if (old_last_address
> last_address
)
8588 last_address
= UINT_MAX
;
8589 update_total_code_bytes (nbytes
);
8590 assemble_end_function (thunk_fndecl
, fnname
);
8593 /* Only direct calls to static functions are allowed to be sibling (tail)
8596 This restriction is necessary because some linker generated stubs will
8597 store return pointers into rp' in some cases which might clobber a
8598 live value already in rp'.
8600 In a sibcall the current function and the target function share stack
8601 space. Thus if the path to the current function and the path to the
8602 target function save a value in rp', they save the value into the
8603 same stack slot, which has undesirable consequences.
8605 Because of the deferred binding nature of shared libraries any function
8606 with external scope could be in a different load module and thus require
8607 rp' to be saved when calling that function. So sibcall optimizations
8608 can only be safe for static function.
8610 Note that GCC never needs return value relocations, so we don't have to
8611 worry about static calls with return value relocations (which require
8614 It is safe to perform a sibcall optimization when the target function
8615 will never return. */
8617 pa_function_ok_for_sibcall (tree decl
, tree exp ATTRIBUTE_UNUSED
)
8619 /* Sibcalls are not ok because the arg pointer register is not a fixed
8620 register. This prevents the sibcall optimization from occurring. In
8621 addition, there are problems with stub placement using GNU ld. This
8622 is because a normal sibcall branch uses a 17-bit relocation while
8623 a regular call branch uses a 22-bit relocation. As a result, more
8624 care needs to be taken in the placement of long-branch stubs. */
8628 if (TARGET_PORTABLE_RUNTIME
)
8631 /* Sibcalls are only ok within a translation unit. */
8632 return decl
&& targetm
.binds_local_p (decl
);
8635 /* ??? Addition is not commutative on the PA due to the weird implicit
8636 space register selection rules for memory addresses. Therefore, we
8637 don't consider a + b == b + a, as this might be inside a MEM. */
8639 pa_commutative_p (const_rtx x
, int outer_code
)
8641 return (COMMUTATIVE_P (x
)
8642 && (TARGET_NO_SPACE_REGS
8643 || (outer_code
!= UNKNOWN
&& outer_code
!= MEM
)
8644 || GET_CODE (x
) != PLUS
));
8647 /* Returns 1 if the 6 operands specified in OPERANDS are suitable for
8648 use in fmpyadd instructions. */
8650 pa_fmpyaddoperands (rtx
*operands
)
8652 machine_mode mode
= GET_MODE (operands
[0]);
8654 /* Must be a floating point mode. */
8655 if (mode
!= SFmode
&& mode
!= DFmode
)
8658 /* All modes must be the same. */
8659 if (! (mode
== GET_MODE (operands
[1])
8660 && mode
== GET_MODE (operands
[2])
8661 && mode
== GET_MODE (operands
[3])
8662 && mode
== GET_MODE (operands
[4])
8663 && mode
== GET_MODE (operands
[5])))
8666 /* All operands must be registers. */
8667 if (! (GET_CODE (operands
[1]) == REG
8668 && GET_CODE (operands
[2]) == REG
8669 && GET_CODE (operands
[3]) == REG
8670 && GET_CODE (operands
[4]) == REG
8671 && GET_CODE (operands
[5]) == REG
))
8674 /* Only 2 real operands to the addition. One of the input operands must
8675 be the same as the output operand. */
8676 if (! rtx_equal_p (operands
[3], operands
[4])
8677 && ! rtx_equal_p (operands
[3], operands
[5]))
8680 /* Inout operand of add cannot conflict with any operands from multiply. */
8681 if (rtx_equal_p (operands
[3], operands
[0])
8682 || rtx_equal_p (operands
[3], operands
[1])
8683 || rtx_equal_p (operands
[3], operands
[2]))
8686 /* multiply cannot feed into addition operands. */
8687 if (rtx_equal_p (operands
[4], operands
[0])
8688 || rtx_equal_p (operands
[5], operands
[0]))
8691 /* SFmode limits the registers to the upper 32 of the 32bit FP regs. */
8693 && (REGNO_REG_CLASS (REGNO (operands
[0])) != FPUPPER_REGS
8694 || REGNO_REG_CLASS (REGNO (operands
[1])) != FPUPPER_REGS
8695 || REGNO_REG_CLASS (REGNO (operands
[2])) != FPUPPER_REGS
8696 || REGNO_REG_CLASS (REGNO (operands
[3])) != FPUPPER_REGS
8697 || REGNO_REG_CLASS (REGNO (operands
[4])) != FPUPPER_REGS
8698 || REGNO_REG_CLASS (REGNO (operands
[5])) != FPUPPER_REGS
))
8701 /* Passed. Operands are suitable for fmpyadd. */
8705 #if !defined(USE_COLLECT2)
8707 pa_asm_out_constructor (rtx symbol
, int priority
)
8709 if (!function_label_operand (symbol
, VOIDmode
))
8710 pa_encode_label (symbol
);
8712 #ifdef CTORS_SECTION_ASM_OP
8713 default_ctor_section_asm_out_constructor (symbol
, priority
);
8715 # ifdef TARGET_ASM_NAMED_SECTION
8716 default_named_section_asm_out_constructor (symbol
, priority
);
8718 default_stabs_asm_out_constructor (symbol
, priority
);
8724 pa_asm_out_destructor (rtx symbol
, int priority
)
8726 if (!function_label_operand (symbol
, VOIDmode
))
8727 pa_encode_label (symbol
);
8729 #ifdef DTORS_SECTION_ASM_OP
8730 default_dtor_section_asm_out_destructor (symbol
, priority
);
8732 # ifdef TARGET_ASM_NAMED_SECTION
8733 default_named_section_asm_out_destructor (symbol
, priority
);
8735 default_stabs_asm_out_destructor (symbol
, priority
);
8741 /* This function places uninitialized global data in the bss section.
8742 The ASM_OUTPUT_ALIGNED_BSS macro needs to be defined to call this
8743 function on the SOM port to prevent uninitialized global data from
8744 being placed in the data section. */
8747 pa_asm_output_aligned_bss (FILE *stream
,
8749 unsigned HOST_WIDE_INT size
,
8752 switch_to_section (bss_section
);
8753 fprintf (stream
, "\t.align %u\n", align
/ BITS_PER_UNIT
);
8755 #ifdef ASM_OUTPUT_TYPE_DIRECTIVE
8756 ASM_OUTPUT_TYPE_DIRECTIVE (stream
, name
, "object");
8759 #ifdef ASM_OUTPUT_SIZE_DIRECTIVE
8760 ASM_OUTPUT_SIZE_DIRECTIVE (stream
, name
, size
);
8763 fprintf (stream
, "\t.align %u\n", align
/ BITS_PER_UNIT
);
8764 ASM_OUTPUT_LABEL (stream
, name
);
8765 fprintf (stream
, "\t.block " HOST_WIDE_INT_PRINT_UNSIGNED
"\n", size
);
8768 /* Both the HP and GNU assemblers under HP-UX provide a .comm directive
8769 that doesn't allow the alignment of global common storage to be directly
8770 specified. The SOM linker aligns common storage based on the rounded
8771 value of the NUM_BYTES parameter in the .comm directive. It's not
8772 possible to use the .align directive as it doesn't affect the alignment
8773 of the label associated with a .comm directive. */
8776 pa_asm_output_aligned_common (FILE *stream
,
8778 unsigned HOST_WIDE_INT size
,
8781 unsigned int max_common_align
;
8783 max_common_align
= TARGET_64BIT
? 128 : (size
>= 4096 ? 256 : 64);
8784 if (align
> max_common_align
)
8786 warning (0, "alignment (%u) for %s exceeds maximum alignment "
8787 "for global common data. Using %u",
8788 align
/ BITS_PER_UNIT
, name
, max_common_align
/ BITS_PER_UNIT
);
8789 align
= max_common_align
;
8792 switch_to_section (bss_section
);
8794 assemble_name (stream
, name
);
8795 fprintf (stream
, "\t.comm " HOST_WIDE_INT_PRINT_UNSIGNED
"\n",
8796 MAX (size
, align
/ BITS_PER_UNIT
));
8799 /* We can't use .comm for local common storage as the SOM linker effectively
8800 treats the symbol as universal and uses the same storage for local symbols
8801 with the same name in different object files. The .block directive
8802 reserves an uninitialized block of storage. However, it's not common
8803 storage. Fortunately, GCC never requests common storage with the same
8804 name in any given translation unit. */
8807 pa_asm_output_aligned_local (FILE *stream
,
8809 unsigned HOST_WIDE_INT size
,
8812 switch_to_section (bss_section
);
8813 fprintf (stream
, "\t.align %u\n", align
/ BITS_PER_UNIT
);
8816 fprintf (stream
, "%s", LOCAL_ASM_OP
);
8817 assemble_name (stream
, name
);
8818 fprintf (stream
, "\n");
8821 ASM_OUTPUT_LABEL (stream
, name
);
8822 fprintf (stream
, "\t.block " HOST_WIDE_INT_PRINT_UNSIGNED
"\n", size
);
8825 /* Returns 1 if the 6 operands specified in OPERANDS are suitable for
8826 use in fmpysub instructions. */
8828 pa_fmpysuboperands (rtx
*operands
)
8830 machine_mode mode
= GET_MODE (operands
[0]);
8832 /* Must be a floating point mode. */
8833 if (mode
!= SFmode
&& mode
!= DFmode
)
8836 /* All modes must be the same. */
8837 if (! (mode
== GET_MODE (operands
[1])
8838 && mode
== GET_MODE (operands
[2])
8839 && mode
== GET_MODE (operands
[3])
8840 && mode
== GET_MODE (operands
[4])
8841 && mode
== GET_MODE (operands
[5])))
8844 /* All operands must be registers. */
8845 if (! (GET_CODE (operands
[1]) == REG
8846 && GET_CODE (operands
[2]) == REG
8847 && GET_CODE (operands
[3]) == REG
8848 && GET_CODE (operands
[4]) == REG
8849 && GET_CODE (operands
[5]) == REG
))
8852 /* Only 2 real operands to the subtraction. Subtraction is not a commutative
8853 operation, so operands[4] must be the same as operand[3]. */
8854 if (! rtx_equal_p (operands
[3], operands
[4]))
8857 /* multiply cannot feed into subtraction. */
8858 if (rtx_equal_p (operands
[5], operands
[0]))
8861 /* Inout operand of sub cannot conflict with any operands from multiply. */
8862 if (rtx_equal_p (operands
[3], operands
[0])
8863 || rtx_equal_p (operands
[3], operands
[1])
8864 || rtx_equal_p (operands
[3], operands
[2]))
8867 /* SFmode limits the registers to the upper 32 of the 32bit FP regs. */
8869 && (REGNO_REG_CLASS (REGNO (operands
[0])) != FPUPPER_REGS
8870 || REGNO_REG_CLASS (REGNO (operands
[1])) != FPUPPER_REGS
8871 || REGNO_REG_CLASS (REGNO (operands
[2])) != FPUPPER_REGS
8872 || REGNO_REG_CLASS (REGNO (operands
[3])) != FPUPPER_REGS
8873 || REGNO_REG_CLASS (REGNO (operands
[4])) != FPUPPER_REGS
8874 || REGNO_REG_CLASS (REGNO (operands
[5])) != FPUPPER_REGS
))
8877 /* Passed. Operands are suitable for fmpysub. */
8881 /* Return 1 if the given constant is 2, 4, or 8. These are the valid
8882 constants for a MULT embedded inside a memory address. */
8884 pa_mem_shadd_constant_p (int val
)
8886 if (val
== 2 || val
== 4 || val
== 8)
8892 /* Return 1 if the given constant is 1, 2, or 3. These are the valid
8893 constants for shadd instructions. */
8895 pa_shadd_constant_p (int val
)
8897 if (val
== 1 || val
== 2 || val
== 3)
8903 /* Return TRUE if INSN branches forward. */
8906 forward_branch_p (rtx_insn
*insn
)
8908 rtx lab
= JUMP_LABEL (insn
);
8910 /* The INSN must have a jump label. */
8911 gcc_assert (lab
!= NULL_RTX
);
8913 if (INSN_ADDRESSES_SET_P ())
8914 return INSN_ADDRESSES (INSN_UID (lab
)) > INSN_ADDRESSES (INSN_UID (insn
));
8921 insn
= NEXT_INSN (insn
);
8927 /* Output an unconditional move and branch insn. */
8930 pa_output_parallel_movb (rtx
*operands
, rtx_insn
*insn
)
8932 int length
= get_attr_length (insn
);
8934 /* These are the cases in which we win. */
8936 return "mov%I1b,tr %1,%0,%2";
8938 /* None of the following cases win, but they don't lose either. */
8941 if (dbr_sequence_length () == 0)
8943 /* Nothing in the delay slot, fake it by putting the combined
8944 insn (the copy or add) in the delay slot of a bl. */
8945 if (GET_CODE (operands
[1]) == CONST_INT
)
8946 return "b %2\n\tldi %1,%0";
8948 return "b %2\n\tcopy %1,%0";
8952 /* Something in the delay slot, but we've got a long branch. */
8953 if (GET_CODE (operands
[1]) == CONST_INT
)
8954 return "ldi %1,%0\n\tb %2";
8956 return "copy %1,%0\n\tb %2";
8960 if (GET_CODE (operands
[1]) == CONST_INT
)
8961 output_asm_insn ("ldi %1,%0", operands
);
8963 output_asm_insn ("copy %1,%0", operands
);
8964 return pa_output_lbranch (operands
[2], insn
, 1);
8967 /* Output an unconditional add and branch insn. */
8970 pa_output_parallel_addb (rtx
*operands
, rtx_insn
*insn
)
8972 int length
= get_attr_length (insn
);
8974 /* To make life easy we want operand0 to be the shared input/output
8975 operand and operand1 to be the readonly operand. */
8976 if (operands
[0] == operands
[1])
8977 operands
[1] = operands
[2];
8979 /* These are the cases in which we win. */
8981 return "add%I1b,tr %1,%0,%3";
8983 /* None of the following cases win, but they don't lose either. */
8986 if (dbr_sequence_length () == 0)
8987 /* Nothing in the delay slot, fake it by putting the combined
8988 insn (the copy or add) in the delay slot of a bl. */
8989 return "b %3\n\tadd%I1 %1,%0,%0";
8991 /* Something in the delay slot, but we've got a long branch. */
8992 return "add%I1 %1,%0,%0\n\tb %3";
8995 output_asm_insn ("add%I1 %1,%0,%0", operands
);
8996 return pa_output_lbranch (operands
[3], insn
, 1);
8999 /* We use this hook to perform a PA specific optimization which is difficult
9000 to do in earlier passes. */
9005 remove_useless_addtr_insns (1);
9007 if (pa_cpu
< PROCESSOR_8000
)
9008 pa_combine_instructions ();
9011 /* The PA has a number of odd instructions which can perform multiple
9012 tasks at once. On first generation PA machines (PA1.0 and PA1.1)
9013 it may be profitable to combine two instructions into one instruction
9014 with two outputs. It's not profitable PA2.0 machines because the
9015 two outputs would take two slots in the reorder buffers.
9017 This routine finds instructions which can be combined and combines
9018 them. We only support some of the potential combinations, and we
9019 only try common ways to find suitable instructions.
9021 * addb can add two registers or a register and a small integer
9022 and jump to a nearby (+-8k) location. Normally the jump to the
9023 nearby location is conditional on the result of the add, but by
9024 using the "true" condition we can make the jump unconditional.
9025 Thus addb can perform two independent operations in one insn.
9027 * movb is similar to addb in that it can perform a reg->reg
9028 or small immediate->reg copy and jump to a nearby (+-8k location).
9030 * fmpyadd and fmpysub can perform a FP multiply and either an
9031 FP add or FP sub if the operands of the multiply and add/sub are
9032 independent (there are other minor restrictions). Note both
9033 the fmpy and fadd/fsub can in theory move to better spots according
9034 to data dependencies, but for now we require the fmpy stay at a
9037 * Many of the memory operations can perform pre & post updates
9038 of index registers. GCC's pre/post increment/decrement addressing
9039 is far too simple to take advantage of all the possibilities. This
9040 pass may not be suitable since those insns may not be independent.
9042 * comclr can compare two ints or an int and a register, nullify
9043 the following instruction and zero some other register. This
9044 is more difficult to use as it's harder to find an insn which
9045 will generate a comclr than finding something like an unconditional
9046 branch. (conditional moves & long branches create comclr insns).
9048 * Most arithmetic operations can conditionally skip the next
9049 instruction. They can be viewed as "perform this operation
9050 and conditionally jump to this nearby location" (where nearby
9051 is an insns away). These are difficult to use due to the
9052 branch length restrictions. */
9055 pa_combine_instructions (void)
9059 /* This can get expensive since the basic algorithm is on the
9060 order of O(n^2) (or worse). Only do it for -O2 or higher
9061 levels of optimization. */
9065 /* Walk down the list of insns looking for "anchor" insns which
9066 may be combined with "floating" insns. As the name implies,
9067 "anchor" instructions don't move, while "floating" insns may
9069 rtx par
= gen_rtx_PARALLEL (VOIDmode
, gen_rtvec (2, NULL_RTX
, NULL_RTX
));
9070 rtx_insn
*new_rtx
= make_insn_raw (par
);
9072 for (anchor
= get_insns (); anchor
; anchor
= NEXT_INSN (anchor
))
9074 enum attr_pa_combine_type anchor_attr
;
9075 enum attr_pa_combine_type floater_attr
;
9077 /* We only care about INSNs, JUMP_INSNs, and CALL_INSNs.
9078 Also ignore any special USE insns. */
9079 if ((! NONJUMP_INSN_P (anchor
) && ! JUMP_P (anchor
) && ! CALL_P (anchor
))
9080 || GET_CODE (PATTERN (anchor
)) == USE
9081 || GET_CODE (PATTERN (anchor
)) == CLOBBER
)
9084 anchor_attr
= get_attr_pa_combine_type (anchor
);
9085 /* See if anchor is an insn suitable for combination. */
9086 if (anchor_attr
== PA_COMBINE_TYPE_FMPY
9087 || anchor_attr
== PA_COMBINE_TYPE_FADDSUB
9088 || (anchor_attr
== PA_COMBINE_TYPE_UNCOND_BRANCH
9089 && ! forward_branch_p (anchor
)))
9093 for (floater
= PREV_INSN (anchor
);
9095 floater
= PREV_INSN (floater
))
9097 if (NOTE_P (floater
)
9098 || (NONJUMP_INSN_P (floater
)
9099 && (GET_CODE (PATTERN (floater
)) == USE
9100 || GET_CODE (PATTERN (floater
)) == CLOBBER
)))
9103 /* Anything except a regular INSN will stop our search. */
9104 if (! NONJUMP_INSN_P (floater
))
9110 /* See if FLOATER is suitable for combination with the
9112 floater_attr
= get_attr_pa_combine_type (floater
);
9113 if ((anchor_attr
== PA_COMBINE_TYPE_FMPY
9114 && floater_attr
== PA_COMBINE_TYPE_FADDSUB
)
9115 || (anchor_attr
== PA_COMBINE_TYPE_FADDSUB
9116 && floater_attr
== PA_COMBINE_TYPE_FMPY
))
9118 /* If ANCHOR and FLOATER can be combined, then we're
9119 done with this pass. */
9120 if (pa_can_combine_p (new_rtx
, anchor
, floater
, 0,
9121 SET_DEST (PATTERN (floater
)),
9122 XEXP (SET_SRC (PATTERN (floater
)), 0),
9123 XEXP (SET_SRC (PATTERN (floater
)), 1)))
9127 else if (anchor_attr
== PA_COMBINE_TYPE_UNCOND_BRANCH
9128 && floater_attr
== PA_COMBINE_TYPE_ADDMOVE
)
9130 if (GET_CODE (SET_SRC (PATTERN (floater
))) == PLUS
)
9132 if (pa_can_combine_p (new_rtx
, anchor
, floater
, 0,
9133 SET_DEST (PATTERN (floater
)),
9134 XEXP (SET_SRC (PATTERN (floater
)), 0),
9135 XEXP (SET_SRC (PATTERN (floater
)), 1)))
9140 if (pa_can_combine_p (new_rtx
, anchor
, floater
, 0,
9141 SET_DEST (PATTERN (floater
)),
9142 SET_SRC (PATTERN (floater
)),
9143 SET_SRC (PATTERN (floater
))))
9149 /* If we didn't find anything on the backwards scan try forwards. */
9151 && (anchor_attr
== PA_COMBINE_TYPE_FMPY
9152 || anchor_attr
== PA_COMBINE_TYPE_FADDSUB
))
9154 for (floater
= anchor
; floater
; floater
= NEXT_INSN (floater
))
9156 if (NOTE_P (floater
)
9157 || (NONJUMP_INSN_P (floater
)
9158 && (GET_CODE (PATTERN (floater
)) == USE
9159 || GET_CODE (PATTERN (floater
)) == CLOBBER
)))
9163 /* Anything except a regular INSN will stop our search. */
9164 if (! NONJUMP_INSN_P (floater
))
9170 /* See if FLOATER is suitable for combination with the
9172 floater_attr
= get_attr_pa_combine_type (floater
);
9173 if ((anchor_attr
== PA_COMBINE_TYPE_FMPY
9174 && floater_attr
== PA_COMBINE_TYPE_FADDSUB
)
9175 || (anchor_attr
== PA_COMBINE_TYPE_FADDSUB
9176 && floater_attr
== PA_COMBINE_TYPE_FMPY
))
9178 /* If ANCHOR and FLOATER can be combined, then we're
9179 done with this pass. */
9180 if (pa_can_combine_p (new_rtx
, anchor
, floater
, 1,
9181 SET_DEST (PATTERN (floater
)),
9182 XEXP (SET_SRC (PATTERN (floater
)),
9184 XEXP (SET_SRC (PATTERN (floater
)),
9191 /* FLOATER will be nonzero if we found a suitable floating
9192 insn for combination with ANCHOR. */
9194 && (anchor_attr
== PA_COMBINE_TYPE_FADDSUB
9195 || anchor_attr
== PA_COMBINE_TYPE_FMPY
))
9197 /* Emit the new instruction and delete the old anchor. */
9198 rtvec vtemp
= gen_rtvec (2, copy_rtx (PATTERN (anchor
)),
9199 copy_rtx (PATTERN (floater
)));
9200 rtx temp
= gen_rtx_PARALLEL (VOIDmode
, vtemp
);
9201 emit_insn_before (temp
, anchor
);
9203 SET_INSN_DELETED (anchor
);
9205 /* Emit a special USE insn for FLOATER, then delete
9206 the floating insn. */
9207 temp
= copy_rtx (PATTERN (floater
));
9208 emit_insn_before (gen_rtx_USE (VOIDmode
, temp
), floater
);
9209 delete_insn (floater
);
9214 && anchor_attr
== PA_COMBINE_TYPE_UNCOND_BRANCH
)
9216 /* Emit the new_jump instruction and delete the old anchor. */
9217 rtvec vtemp
= gen_rtvec (2, copy_rtx (PATTERN (anchor
)),
9218 copy_rtx (PATTERN (floater
)));
9219 rtx temp
= gen_rtx_PARALLEL (VOIDmode
, vtemp
);
9220 temp
= emit_jump_insn_before (temp
, anchor
);
9222 JUMP_LABEL (temp
) = JUMP_LABEL (anchor
);
9223 SET_INSN_DELETED (anchor
);
9225 /* Emit a special USE insn for FLOATER, then delete
9226 the floating insn. */
9227 temp
= copy_rtx (PATTERN (floater
));
9228 emit_insn_before (gen_rtx_USE (VOIDmode
, temp
), floater
);
9229 delete_insn (floater
);
9237 pa_can_combine_p (rtx_insn
*new_rtx
, rtx_insn
*anchor
, rtx_insn
*floater
,
9238 int reversed
, rtx dest
,
9241 int insn_code_number
;
9242 rtx_insn
*start
, *end
;
9244 /* Create a PARALLEL with the patterns of ANCHOR and
9245 FLOATER, try to recognize it, then test constraints
9246 for the resulting pattern.
9248 If the pattern doesn't match or the constraints
9249 aren't met keep searching for a suitable floater
9251 XVECEXP (PATTERN (new_rtx
), 0, 0) = PATTERN (anchor
);
9252 XVECEXP (PATTERN (new_rtx
), 0, 1) = PATTERN (floater
);
9253 INSN_CODE (new_rtx
) = -1;
9254 insn_code_number
= recog_memoized (new_rtx
);
9255 basic_block bb
= BLOCK_FOR_INSN (anchor
);
9256 if (insn_code_number
< 0
9257 || (extract_insn (new_rtx
),
9258 !constrain_operands (1, get_preferred_alternatives (new_rtx
, bb
))))
9272 /* There's up to three operands to consider. One
9273 output and two inputs.
9275 The output must not be used between FLOATER & ANCHOR
9276 exclusive. The inputs must not be set between
9277 FLOATER and ANCHOR exclusive. */
9279 if (reg_used_between_p (dest
, start
, end
))
9282 if (reg_set_between_p (src1
, start
, end
))
9285 if (reg_set_between_p (src2
, start
, end
))
9288 /* If we get here, then everything is good. */
9292 /* Return nonzero if references for INSN are delayed.
9294 Millicode insns are actually function calls with some special
9295 constraints on arguments and register usage.
9297 Millicode calls always expect their arguments in the integer argument
9298 registers, and always return their result in %r29 (ret1). They
9299 are expected to clobber their arguments, %r1, %r29, and the return
9300 pointer which is %r31 on 32-bit and %r2 on 64-bit, and nothing else.
9302 This function tells reorg that the references to arguments and
9303 millicode calls do not appear to happen until after the millicode call.
9304 This allows reorg to put insns which set the argument registers into the
9305 delay slot of the millicode call -- thus they act more like traditional
9308 Note we cannot consider side effects of the insn to be delayed because
9309 the branch and link insn will clobber the return pointer. If we happened
9310 to use the return pointer in the delay slot of the call, then we lose.
9312 get_attr_type will try to recognize the given insn, so make sure to
9313 filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
9316 pa_insn_refs_are_delayed (rtx_insn
*insn
)
9318 return ((NONJUMP_INSN_P (insn
)
9319 && GET_CODE (PATTERN (insn
)) != SEQUENCE
9320 && GET_CODE (PATTERN (insn
)) != USE
9321 && GET_CODE (PATTERN (insn
)) != CLOBBER
9322 && get_attr_type (insn
) == TYPE_MILLI
));
9325 /* Promote the return value, but not the arguments. */
9328 pa_promote_function_mode (const_tree type ATTRIBUTE_UNUSED
,
9330 int *punsignedp ATTRIBUTE_UNUSED
,
9331 const_tree fntype ATTRIBUTE_UNUSED
,
9334 if (for_return
== 0)
9336 return promote_mode (type
, mode
, punsignedp
);
9339 /* On the HP-PA the value is found in register(s) 28(-29), unless
9340 the mode is SF or DF. Then the value is returned in fr4 (32).
9342 This must perform the same promotions as PROMOTE_MODE, else promoting
9343 return values in TARGET_PROMOTE_FUNCTION_MODE will not work correctly.
9345 Small structures must be returned in a PARALLEL on PA64 in order
9346 to match the HP Compiler ABI. */
9349 pa_function_value (const_tree valtype
,
9350 const_tree func ATTRIBUTE_UNUSED
,
9351 bool outgoing ATTRIBUTE_UNUSED
)
9353 machine_mode valmode
;
9355 if (AGGREGATE_TYPE_P (valtype
)
9356 || TREE_CODE (valtype
) == COMPLEX_TYPE
9357 || TREE_CODE (valtype
) == VECTOR_TYPE
)
9359 HOST_WIDE_INT valsize
= int_size_in_bytes (valtype
);
9361 /* Handle aggregates that fit exactly in a word or double word. */
9362 if ((valsize
& (UNITS_PER_WORD
- 1)) == 0)
9363 return gen_rtx_REG (TYPE_MODE (valtype
), 28);
9367 /* Aggregates with a size less than or equal to 128 bits are
9368 returned in GR 28(-29). They are left justified. The pad
9369 bits are undefined. Larger aggregates are returned in
9373 int ub
= valsize
<= UNITS_PER_WORD
? 1 : 2;
9375 for (i
= 0; i
< ub
; i
++)
9377 loc
[i
] = gen_rtx_EXPR_LIST (VOIDmode
,
9378 gen_rtx_REG (DImode
, 28 + i
),
9383 return gen_rtx_PARALLEL (BLKmode
, gen_rtvec_v (ub
, loc
));
9385 else if (valsize
> UNITS_PER_WORD
)
9387 /* Aggregates 5 to 8 bytes in size are returned in general
9388 registers r28-r29 in the same manner as other non
9389 floating-point objects. The data is right-justified and
9390 zero-extended to 64 bits. This is opposite to the normal
9391 justification used on big endian targets and requires
9392 special treatment. */
9393 rtx loc
= gen_rtx_EXPR_LIST (VOIDmode
,
9394 gen_rtx_REG (DImode
, 28), const0_rtx
);
9395 return gen_rtx_PARALLEL (BLKmode
, gen_rtvec (1, loc
));
9399 if ((INTEGRAL_TYPE_P (valtype
)
9400 && GET_MODE_BITSIZE (TYPE_MODE (valtype
)) < BITS_PER_WORD
)
9401 || POINTER_TYPE_P (valtype
))
9402 valmode
= word_mode
;
9404 valmode
= TYPE_MODE (valtype
);
9406 if (TREE_CODE (valtype
) == REAL_TYPE
9407 && !AGGREGATE_TYPE_P (valtype
)
9408 && TYPE_MODE (valtype
) != TFmode
9409 && !TARGET_SOFT_FLOAT
)
9410 return gen_rtx_REG (valmode
, 32);
9412 return gen_rtx_REG (valmode
, 28);
9415 /* Implement the TARGET_LIBCALL_VALUE hook. */
9418 pa_libcall_value (machine_mode mode
,
9419 const_rtx fun ATTRIBUTE_UNUSED
)
9421 if (! TARGET_SOFT_FLOAT
9422 && (mode
== SFmode
|| mode
== DFmode
))
9423 return gen_rtx_REG (mode
, 32);
9425 return gen_rtx_REG (mode
, 28);
9428 /* Implement the TARGET_FUNCTION_VALUE_REGNO_P hook. */
9431 pa_function_value_regno_p (const unsigned int regno
)
9434 || (! TARGET_SOFT_FLOAT
&& regno
== 32))
9440 /* Update the data in CUM to advance over argument ARG. */
9443 pa_function_arg_advance (cumulative_args_t cum_v
,
9444 const function_arg_info
&arg
)
9446 CUMULATIVE_ARGS
*cum
= get_cumulative_args (cum_v
);
9447 int arg_size
= pa_function_arg_size (arg
.mode
, arg
.type
);
9449 cum
->nargs_prototype
--;
9450 cum
->words
+= (arg_size
9451 + ((cum
->words
& 01)
9452 && arg
.type
!= NULL_TREE
9456 /* Return the location of a parameter that is passed in a register or NULL
9457 if the parameter has any component that is passed in memory.
9459 This is new code and will be pushed to into the net sources after
9462 ??? We might want to restructure this so that it looks more like other
9465 pa_function_arg (cumulative_args_t cum_v
, const function_arg_info
&arg
)
9467 CUMULATIVE_ARGS
*cum
= get_cumulative_args (cum_v
);
9468 tree type
= arg
.type
;
9469 machine_mode mode
= arg
.mode
;
9470 int max_arg_words
= (TARGET_64BIT
? 8 : 4);
9477 if (arg
.end_marker_p ())
9480 arg_size
= pa_function_arg_size (mode
, type
);
9482 /* If this arg would be passed partially or totally on the stack, then
9483 this routine should return zero. pa_arg_partial_bytes will
9484 handle arguments which are split between regs and stack slots if
9485 the ABI mandates split arguments. */
9488 /* The 32-bit ABI does not split arguments. */
9489 if (cum
->words
+ arg_size
> max_arg_words
)
9495 alignment
= cum
->words
& 1;
9496 if (cum
->words
+ alignment
>= max_arg_words
)
9500 /* The 32bit ABIs and the 64bit ABIs are rather different,
9501 particularly in their handling of FP registers. We might
9502 be able to cleverly share code between them, but I'm not
9503 going to bother in the hope that splitting them up results
9504 in code that is more easily understood. */
9508 /* Advance the base registers to their current locations.
9510 Remember, gprs grow towards smaller register numbers while
9511 fprs grow to higher register numbers. Also remember that
9512 although FP regs are 32-bit addressable, we pretend that
9513 the registers are 64-bits wide. */
9514 gpr_reg_base
= 26 - cum
->words
;
9515 fpr_reg_base
= 32 + cum
->words
;
9517 /* Arguments wider than one word and small aggregates need special
9521 || (type
&& (AGGREGATE_TYPE_P (type
)
9522 || TREE_CODE (type
) == COMPLEX_TYPE
9523 || TREE_CODE (type
) == VECTOR_TYPE
)))
9525 /* Double-extended precision (80-bit), quad-precision (128-bit)
9526 and aggregates including complex numbers are aligned on
9527 128-bit boundaries. The first eight 64-bit argument slots
9528 are associated one-to-one, with general registers r26
9529 through r19, and also with floating-point registers fr4
9530 through fr11. Arguments larger than one word are always
9531 passed in general registers.
9533 Using a PARALLEL with a word mode register results in left
9534 justified data on a big-endian target. */
9537 int i
, offset
= 0, ub
= arg_size
;
9539 /* Align the base register. */
9540 gpr_reg_base
-= alignment
;
9542 ub
= MIN (ub
, max_arg_words
- cum
->words
- alignment
);
9543 for (i
= 0; i
< ub
; i
++)
9545 loc
[i
] = gen_rtx_EXPR_LIST (VOIDmode
,
9546 gen_rtx_REG (DImode
, gpr_reg_base
),
9552 return gen_rtx_PARALLEL (mode
, gen_rtvec_v (ub
, loc
));
9557 /* If the argument is larger than a word, then we know precisely
9558 which registers we must use. */
9572 /* Structures 5 to 8 bytes in size are passed in the general
9573 registers in the same manner as other non floating-point
9574 objects. The data is right-justified and zero-extended
9575 to 64 bits. This is opposite to the normal justification
9576 used on big endian targets and requires special treatment.
9577 We now define BLOCK_REG_PADDING to pad these objects.
9578 Aggregates, complex and vector types are passed in the same
9579 manner as structures. */
9581 || (type
&& (AGGREGATE_TYPE_P (type
)
9582 || TREE_CODE (type
) == COMPLEX_TYPE
9583 || TREE_CODE (type
) == VECTOR_TYPE
)))
9585 rtx loc
= gen_rtx_EXPR_LIST (VOIDmode
,
9586 gen_rtx_REG (DImode
, gpr_reg_base
),
9588 return gen_rtx_PARALLEL (BLKmode
, gen_rtvec (1, loc
));
9593 /* We have a single word (32 bits). A simple computation
9594 will get us the register #s we need. */
9595 gpr_reg_base
= 26 - cum
->words
;
9596 fpr_reg_base
= 32 + 2 * cum
->words
;
9600 /* Determine if the argument needs to be passed in both general and
9601 floating point registers. */
9602 if (((TARGET_PORTABLE_RUNTIME
|| TARGET_64BIT
|| TARGET_ELF32
)
9603 /* If we are doing soft-float with portable runtime, then there
9604 is no need to worry about FP regs. */
9605 && !TARGET_SOFT_FLOAT
9606 /* The parameter must be some kind of scalar float, else we just
9607 pass it in integer registers. */
9608 && GET_MODE_CLASS (mode
) == MODE_FLOAT
9609 /* The target function must not have a prototype. */
9610 && cum
->nargs_prototype
<= 0
9611 /* libcalls do not need to pass items in both FP and general
9613 && type
!= NULL_TREE
9614 /* All this hair applies to "outgoing" args only. This includes
9615 sibcall arguments setup with FUNCTION_INCOMING_ARG. */
9617 /* Also pass outgoing floating arguments in both registers in indirect
9618 calls with the 32 bit ABI and the HP assembler since there is no
9619 way to the specify argument locations in static functions. */
9624 && GET_MODE_CLASS (mode
) == MODE_FLOAT
))
9630 gen_rtx_EXPR_LIST (VOIDmode
,
9631 gen_rtx_REG (mode
, fpr_reg_base
),
9633 gen_rtx_EXPR_LIST (VOIDmode
,
9634 gen_rtx_REG (mode
, gpr_reg_base
),
9639 /* See if we should pass this parameter in a general register. */
9640 if (TARGET_SOFT_FLOAT
9641 /* Indirect calls in the normal 32bit ABI require all arguments
9642 to be passed in general registers. */
9643 || (!TARGET_PORTABLE_RUNTIME
9647 /* If the parameter is not a scalar floating-point parameter,
9648 then it belongs in GPRs. */
9649 || GET_MODE_CLASS (mode
) != MODE_FLOAT
9650 /* Structure with single SFmode field belongs in GPR. */
9651 || (type
&& AGGREGATE_TYPE_P (type
)))
9652 retval
= gen_rtx_REG (mode
, gpr_reg_base
);
9654 retval
= gen_rtx_REG (mode
, fpr_reg_base
);
9659 /* Arguments larger than one word are double word aligned. */
9662 pa_function_arg_boundary (machine_mode mode
, const_tree type
)
9664 bool singleword
= (type
9665 ? (integer_zerop (TYPE_SIZE (type
))
9666 || !TREE_CONSTANT (TYPE_SIZE (type
))
9667 || int_size_in_bytes (type
) <= UNITS_PER_WORD
)
9668 : GET_MODE_SIZE (mode
) <= UNITS_PER_WORD
);
9670 return singleword
? PARM_BOUNDARY
: MAX_PARM_BOUNDARY
;
9673 /* If this arg would be passed totally in registers or totally on the stack,
9674 then this routine should return zero. */
9677 pa_arg_partial_bytes (cumulative_args_t cum_v
, const function_arg_info
&arg
)
9679 CUMULATIVE_ARGS
*cum
= get_cumulative_args (cum_v
);
9680 unsigned int max_arg_words
= 8;
9681 unsigned int offset
= 0;
9686 if (pa_function_arg_size (arg
.mode
, arg
.type
) > 1 && (cum
->words
& 1))
9689 if (cum
->words
+ offset
+ pa_function_arg_size (arg
.mode
, arg
.type
)
9691 /* Arg fits fully into registers. */
9693 else if (cum
->words
+ offset
>= max_arg_words
)
9694 /* Arg fully on the stack. */
9698 return (max_arg_words
- cum
->words
- offset
) * UNITS_PER_WORD
;
9702 /* A get_unnamed_section callback for switching to the text section.
9704 This function is only used with SOM. Because we don't support
9705 named subspaces, we can only create a new subspace or switch back
9706 to the default text subspace. */
9709 som_output_text_section_asm_op (const void *data ATTRIBUTE_UNUSED
)
9711 gcc_assert (TARGET_SOM
);
9714 if (cfun
&& cfun
->machine
&& !cfun
->machine
->in_nsubspa
)
9716 /* We only want to emit a .nsubspa directive once at the
9717 start of the function. */
9718 cfun
->machine
->in_nsubspa
= 1;
9720 /* Create a new subspace for the text. This provides
9721 better stub placement and one-only functions. */
9723 && DECL_ONE_ONLY (cfun
->decl
)
9724 && !DECL_WEAK (cfun
->decl
))
9726 output_section_asm_op ("\t.SPACE $TEXT$\n"
9727 "\t.NSUBSPA $CODE$,QUAD=0,ALIGN=8,"
9728 "ACCESS=44,SORT=24,COMDAT");
9734 /* There isn't a current function or the body of the current
9735 function has been completed. So, we are changing to the
9736 text section to output debugging information. Thus, we
9737 need to forget that we are in the text section so that
9738 varasm.c will call us when text_section is selected again. */
9739 gcc_assert (!cfun
|| !cfun
->machine
9740 || cfun
->machine
->in_nsubspa
== 2);
9743 output_section_asm_op ("\t.SPACE $TEXT$\n\t.NSUBSPA $CODE$");
9746 output_section_asm_op ("\t.SPACE $TEXT$\n\t.SUBSPA $CODE$");
9749 /* A get_unnamed_section callback for switching to comdat data
9750 sections. This function is only used with SOM. */
9753 som_output_comdat_data_section_asm_op (const void *data
)
9756 output_section_asm_op (data
);
9759 /* Implement TARGET_ASM_INIT_SECTIONS. */
9762 pa_som_asm_init_sections (void)
9765 = get_unnamed_section (0, som_output_text_section_asm_op
, NULL
);
9767 /* SOM puts readonly data in the default $LIT$ subspace when PIC code
9768 is not being generated. */
9769 som_readonly_data_section
9770 = get_unnamed_section (0, output_section_asm_op
,
9771 "\t.SPACE $TEXT$\n\t.SUBSPA $LIT$");
9773 /* When secondary definitions are not supported, SOM makes readonly
9774 data one-only by creating a new $LIT$ subspace in $TEXT$ with
9776 som_one_only_readonly_data_section
9777 = get_unnamed_section (0, som_output_comdat_data_section_asm_op
,
9779 "\t.NSUBSPA $LIT$,QUAD=0,ALIGN=8,"
9780 "ACCESS=0x2c,SORT=16,COMDAT");
9783 /* When secondary definitions are not supported, SOM makes data one-only
9784 by creating a new $DATA$ subspace in $PRIVATE$ with the comdat flag. */
9785 som_one_only_data_section
9786 = get_unnamed_section (SECTION_WRITE
,
9787 som_output_comdat_data_section_asm_op
,
9788 "\t.SPACE $PRIVATE$\n"
9789 "\t.NSUBSPA $DATA$,QUAD=1,ALIGN=8,"
9790 "ACCESS=31,SORT=24,COMDAT");
9793 som_tm_clone_table_section
9794 = get_unnamed_section (0, output_section_asm_op
,
9795 "\t.SPACE $PRIVATE$\n\t.SUBSPA $TM_CLONE_TABLE$");
9797 /* HPUX ld generates incorrect GOT entries for "T" fixups which
9798 reference data within the $TEXT$ space (for example constant
9799 strings in the $LIT$ subspace).
9801 The assemblers (GAS and HP as) both have problems with handling
9802 the difference of two symbols. This is the other correct way to
9803 reference constant data during PIC code generation.
9805 Thus, we can't put constant data needing relocation in the $TEXT$
9806 space during PIC generation.
9808 Previously, we placed all constant data into the $DATA$ subspace
9809 when generating PIC code. This reduces sharing, but it works
9810 correctly. Now we rely on pa_reloc_rw_mask() for section selection.
9811 This puts constant data not needing relocation into the $TEXT$ space. */
9812 readonly_data_section
= som_readonly_data_section
;
9814 /* We must not have a reference to an external symbol defined in a
9815 shared library in a readonly section, else the SOM linker will
9818 So, we force exception information into the data section. */
9819 exception_section
= data_section
;
9822 /* Implement TARGET_ASM_TM_CLONE_TABLE_SECTION. */
9825 pa_som_tm_clone_table_section (void)
9827 return som_tm_clone_table_section
;
9830 /* On hpux10, the linker will give an error if we have a reference
9831 in the read-only data section to a symbol defined in a shared
9832 library. Therefore, expressions that might require a reloc
9833 cannot be placed in the read-only data section. */
9836 pa_select_section (tree exp
, int reloc
,
9837 unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED
)
9839 if (TREE_CODE (exp
) == VAR_DECL
9840 && TREE_READONLY (exp
)
9841 && !TREE_THIS_VOLATILE (exp
)
9842 && DECL_INITIAL (exp
)
9843 && (DECL_INITIAL (exp
) == error_mark_node
9844 || TREE_CONSTANT (DECL_INITIAL (exp
)))
9845 && !(reloc
& pa_reloc_rw_mask ()))
9848 && DECL_ONE_ONLY (exp
)
9849 && !DECL_WEAK (exp
))
9850 return som_one_only_readonly_data_section
;
9852 return readonly_data_section
;
9854 else if (CONSTANT_CLASS_P (exp
)
9855 && !(reloc
& pa_reloc_rw_mask ()))
9856 return readonly_data_section
;
9858 && TREE_CODE (exp
) == VAR_DECL
9859 && DECL_ONE_ONLY (exp
)
9860 && !DECL_WEAK (exp
))
9861 return som_one_only_data_section
;
9863 return data_section
;
9866 /* Implement pa_reloc_rw_mask. */
9869 pa_reloc_rw_mask (void)
9871 if (flag_pic
|| (TARGET_SOM
&& !TARGET_HPUX_11
))
9874 /* HP linker does not support global relocs in readonly memory. */
9875 return TARGET_SOM
? 2 : 0;
9879 pa_globalize_label (FILE *stream
, const char *name
)
9881 /* We only handle DATA objects here, functions are globalized in
9882 ASM_DECLARE_FUNCTION_NAME. */
9883 if (! FUNCTION_NAME_P (name
))
9885 fputs ("\t.EXPORT ", stream
);
9886 assemble_name (stream
, name
);
9887 fputs (",DATA\n", stream
);
9891 /* Worker function for TARGET_STRUCT_VALUE_RTX. */
9894 pa_struct_value_rtx (tree fntype ATTRIBUTE_UNUSED
,
9895 int incoming ATTRIBUTE_UNUSED
)
9897 return gen_rtx_REG (Pmode
, PA_STRUCT_VALUE_REGNUM
);
9900 /* Worker function for TARGET_RETURN_IN_MEMORY. */
9903 pa_return_in_memory (const_tree type
, const_tree fntype ATTRIBUTE_UNUSED
)
9905 /* SOM ABI says that objects larger than 64 bits are returned in memory.
9906 PA64 ABI says that objects larger than 128 bits are returned in memory.
9907 Note, int_size_in_bytes can return -1 if the size of the object is
9908 variable or larger than the maximum value that can be expressed as
9909 a HOST_WIDE_INT. It can also return zero for an empty type. The
9910 simplest way to handle variable and empty types is to pass them in
9911 memory. This avoids problems in defining the boundaries of argument
9912 slots, allocating registers, etc. */
9913 return (int_size_in_bytes (type
) > (TARGET_64BIT
? 16 : 8)
9914 || int_size_in_bytes (type
) <= 0);
9917 /* Structure to hold declaration and name of external symbols that are
9918 emitted by GCC. We generate a vector of these symbols and output them
9919 at the end of the file if and only if SYMBOL_REF_REFERENCED_P is true.
9920 This avoids putting out names that are never really used. */
9922 typedef struct GTY(()) extern_symbol
9928 /* Define gc'd vector type for extern_symbol. */
9930 /* Vector of extern_symbol pointers. */
9931 static GTY(()) vec
<extern_symbol
, va_gc
> *extern_symbols
;
9933 #ifdef ASM_OUTPUT_EXTERNAL_REAL
9934 /* Mark DECL (name NAME) as an external reference (assembler output
9935 file FILE). This saves the names to output at the end of the file
9936 if actually referenced. */
9939 pa_hpux_asm_output_external (FILE *file
, tree decl
, const char *name
)
9941 gcc_assert (file
== asm_out_file
);
9942 extern_symbol p
= {decl
, name
};
9943 vec_safe_push (extern_symbols
, p
);
9947 /* Output text required at the end of an assembler file.
9948 This includes deferred plabels and .import directives for
9949 all external symbols that were actually referenced. */
9954 #ifdef ASM_OUTPUT_EXTERNAL_REAL
9958 if (!NO_DEFERRED_PROFILE_COUNTERS
)
9959 output_deferred_profile_counters ();
9962 output_deferred_plabels ();
9964 #ifdef ASM_OUTPUT_EXTERNAL_REAL
9965 for (i
= 0; vec_safe_iterate (extern_symbols
, i
, &p
); i
++)
9967 tree decl
= p
->decl
;
9969 if (!TREE_ASM_WRITTEN (decl
)
9970 && SYMBOL_REF_REFERENCED_P (XEXP (DECL_RTL (decl
), 0)))
9971 ASM_OUTPUT_EXTERNAL_REAL (asm_out_file
, decl
, p
->name
);
9974 vec_free (extern_symbols
);
9977 if (NEED_INDICATE_EXEC_STACK
)
9978 file_end_indicate_exec_stack ();
9981 /* Implement TARGET_CAN_CHANGE_MODE_CLASS. */
9984 pa_can_change_mode_class (machine_mode from
, machine_mode to
,
9990 if (GET_MODE_SIZE (from
) == GET_MODE_SIZE (to
))
9993 /* Reject changes to/from modes with zero size. */
9994 if (!GET_MODE_SIZE (from
) || !GET_MODE_SIZE (to
))
9997 /* Reject changes to/from complex and vector modes. */
9998 if (COMPLEX_MODE_P (from
) || VECTOR_MODE_P (from
)
9999 || COMPLEX_MODE_P (to
) || VECTOR_MODE_P (to
))
10002 /* There is no way to load QImode or HImode values directly from memory
10003 to a FP register. SImode loads to the FP registers are not zero
10004 extended. On the 64-bit target, this conflicts with the definition
10005 of LOAD_EXTEND_OP. Thus, we reject all mode changes in the FP registers
10006 except for DImode to SImode on the 64-bit target. It is handled by
10007 register renaming in pa_print_operand. */
10008 if (MAYBE_FP_REG_CLASS_P (rclass
))
10009 return TARGET_64BIT
&& from
== DImode
&& to
== SImode
;
10011 /* TARGET_HARD_REGNO_MODE_OK places modes with sizes larger than a word
10012 in specific sets of registers. Thus, we cannot allow changing
10013 to a larger mode when it's larger than a word. */
10014 if (GET_MODE_SIZE (to
) > UNITS_PER_WORD
10015 && GET_MODE_SIZE (to
) > GET_MODE_SIZE (from
))
10021 /* Implement TARGET_MODES_TIEABLE_P.
10023 We should return FALSE for QImode and HImode because these modes
10024 are not ok in the floating-point registers. However, this prevents
10025 tieing these modes to SImode and DImode in the general registers.
10026 So, this isn't a good idea. We rely on TARGET_HARD_REGNO_MODE_OK and
10027 TARGET_CAN_CHANGE_MODE_CLASS to prevent these modes from being used
10028 in the floating-point registers. */
10031 pa_modes_tieable_p (machine_mode mode1
, machine_mode mode2
)
10033 /* Don't tie modes in different classes. */
10034 if (GET_MODE_CLASS (mode1
) != GET_MODE_CLASS (mode2
))
10041 /* Length in units of the trampoline instruction code. */
10043 #define TRAMPOLINE_CODE_SIZE (TARGET_64BIT ? 24 : (TARGET_PA_20 ? 32 : 40))
10046 /* Output assembler code for a block containing the constant parts
10047 of a trampoline, leaving space for the variable parts.\
10049 The trampoline sets the static chain pointer to STATIC_CHAIN_REGNUM
10050 and then branches to the specified routine.
10052 This code template is copied from text segment to stack location
10053 and then patched with pa_trampoline_init to contain valid values,
10054 and then entered as a subroutine.
10056 It is best to keep this as small as possible to avoid having to
10057 flush multiple lines in the cache. */
10060 pa_asm_trampoline_template (FILE *f
)
10064 fputs ("\tldw 36(%r22),%r21\n", f
);
10065 fputs ("\tbb,>=,n %r21,30,.+16\n", f
);
10066 if (ASSEMBLER_DIALECT
== 0)
10067 fputs ("\tdepi 0,31,2,%r21\n", f
);
10069 fputs ("\tdepwi 0,31,2,%r21\n", f
);
10070 fputs ("\tldw 4(%r21),%r19\n", f
);
10071 fputs ("\tldw 0(%r21),%r21\n", f
);
10074 fputs ("\tbve (%r21)\n", f
);
10075 fputs ("\tldw 40(%r22),%r29\n", f
);
10076 fputs ("\t.word 0\n", f
);
10077 fputs ("\t.word 0\n", f
);
10081 fputs ("\tldsid (%r21),%r1\n", f
);
10082 fputs ("\tmtsp %r1,%sr0\n", f
);
10083 fputs ("\tbe 0(%sr0,%r21)\n", f
);
10084 fputs ("\tldw 40(%r22),%r29\n", f
);
10086 fputs ("\t.word 0\n", f
);
10087 fputs ("\t.word 0\n", f
);
10088 fputs ("\t.word 0\n", f
);
10089 fputs ("\t.word 0\n", f
);
10093 fputs ("\t.dword 0\n", f
);
10094 fputs ("\t.dword 0\n", f
);
10095 fputs ("\t.dword 0\n", f
);
10096 fputs ("\t.dword 0\n", f
);
10097 fputs ("\tmfia %r31\n", f
);
10098 fputs ("\tldd 24(%r31),%r1\n", f
);
10099 fputs ("\tldd 24(%r1),%r27\n", f
);
10100 fputs ("\tldd 16(%r1),%r1\n", f
);
10101 fputs ("\tbve (%r1)\n", f
);
10102 fputs ("\tldd 32(%r31),%r31\n", f
);
10103 fputs ("\t.dword 0 ; fptr\n", f
);
10104 fputs ("\t.dword 0 ; static link\n", f
);
10108 /* Emit RTL insns to initialize the variable parts of a trampoline.
10109 FNADDR is an RTX for the address of the function's pure code.
10110 CXT is an RTX for the static chain value for the function.
10112 Move the function address to the trampoline template at offset 36.
10113 Move the static chain value to trampoline template at offset 40.
10114 Move the trampoline address to trampoline template at offset 44.
10115 Move r19 to trampoline template at offset 48. The latter two
10116 words create a plabel for the indirect call to the trampoline.
10118 A similar sequence is used for the 64-bit port but the plabel is
10119 at the beginning of the trampoline.
10121 Finally, the cache entries for the trampoline code are flushed.
10122 This is necessary to ensure that the trampoline instruction sequence
10123 is written to memory prior to any attempts at prefetching the code
10127 pa_trampoline_init (rtx m_tramp
, tree fndecl
, rtx chain_value
)
10129 rtx fnaddr
= XEXP (DECL_RTL (fndecl
), 0);
10130 rtx start_addr
= gen_reg_rtx (Pmode
);
10131 rtx end_addr
= gen_reg_rtx (Pmode
);
10132 rtx line_length
= gen_reg_rtx (Pmode
);
10135 emit_block_move (m_tramp
, assemble_trampoline_template (),
10136 GEN_INT (TRAMPOLINE_SIZE
), BLOCK_OP_NORMAL
);
10137 r_tramp
= force_reg (Pmode
, XEXP (m_tramp
, 0));
10141 tmp
= adjust_address (m_tramp
, Pmode
, 36);
10142 emit_move_insn (tmp
, fnaddr
);
10143 tmp
= adjust_address (m_tramp
, Pmode
, 40);
10144 emit_move_insn (tmp
, chain_value
);
10146 /* Create a fat pointer for the trampoline. */
10147 tmp
= adjust_address (m_tramp
, Pmode
, 44);
10148 emit_move_insn (tmp
, r_tramp
);
10149 tmp
= adjust_address (m_tramp
, Pmode
, 48);
10150 emit_move_insn (tmp
, gen_rtx_REG (Pmode
, 19));
10152 /* fdc and fic only use registers for the address to flush,
10153 they do not accept integer displacements. We align the
10154 start and end addresses to the beginning of their respective
10155 cache lines to minimize the number of lines flushed. */
10156 emit_insn (gen_andsi3 (start_addr
, r_tramp
,
10157 GEN_INT (-MIN_CACHELINE_SIZE
)));
10158 tmp
= force_reg (Pmode
, plus_constant (Pmode
, r_tramp
,
10159 TRAMPOLINE_CODE_SIZE
-1));
10160 emit_insn (gen_andsi3 (end_addr
, tmp
,
10161 GEN_INT (-MIN_CACHELINE_SIZE
)));
10162 emit_move_insn (line_length
, GEN_INT (MIN_CACHELINE_SIZE
));
10163 emit_insn (gen_dcacheflushsi (start_addr
, end_addr
, line_length
));
10164 emit_insn (gen_icacheflushsi (start_addr
, end_addr
, line_length
,
10165 gen_reg_rtx (Pmode
),
10166 gen_reg_rtx (Pmode
)));
10170 tmp
= adjust_address (m_tramp
, Pmode
, 56);
10171 emit_move_insn (tmp
, fnaddr
);
10172 tmp
= adjust_address (m_tramp
, Pmode
, 64);
10173 emit_move_insn (tmp
, chain_value
);
10175 /* Create a fat pointer for the trampoline. */
10176 tmp
= adjust_address (m_tramp
, Pmode
, 16);
10177 emit_move_insn (tmp
, force_reg (Pmode
, plus_constant (Pmode
,
10179 tmp
= adjust_address (m_tramp
, Pmode
, 24);
10180 emit_move_insn (tmp
, gen_rtx_REG (Pmode
, 27));
10182 /* fdc and fic only use registers for the address to flush,
10183 they do not accept integer displacements. We align the
10184 start and end addresses to the beginning of their respective
10185 cache lines to minimize the number of lines flushed. */
10186 tmp
= force_reg (Pmode
, plus_constant (Pmode
, r_tramp
, 32));
10187 emit_insn (gen_anddi3 (start_addr
, tmp
,
10188 GEN_INT (-MIN_CACHELINE_SIZE
)));
10189 tmp
= force_reg (Pmode
, plus_constant (Pmode
, tmp
,
10190 TRAMPOLINE_CODE_SIZE
- 1));
10191 emit_insn (gen_anddi3 (end_addr
, tmp
,
10192 GEN_INT (-MIN_CACHELINE_SIZE
)));
10193 emit_move_insn (line_length
, GEN_INT (MIN_CACHELINE_SIZE
));
10194 emit_insn (gen_dcacheflushdi (start_addr
, end_addr
, line_length
));
10195 emit_insn (gen_icacheflushdi (start_addr
, end_addr
, line_length
,
10196 gen_reg_rtx (Pmode
),
10197 gen_reg_rtx (Pmode
)));
10200 #ifdef HAVE_ENABLE_EXECUTE_STACK
10201 Â
emit_library_call (gen_rtx_SYMBOL_REF (Pmode
, "__enable_execute_stack"),
10202 LCT_NORMAL
, VOIDmode
, XEXP (m_tramp
, 0), Pmode
);
10206 /* Perform any machine-specific adjustment in the address of the trampoline.
10207 ADDR contains the address that was passed to pa_trampoline_init.
10208 Adjust the trampoline address to point to the plabel at offset 44. */
10211 pa_trampoline_adjust_address (rtx addr
)
10214 addr
= memory_address (Pmode
, plus_constant (Pmode
, addr
, 46));
10219 pa_delegitimize_address (rtx orig_x
)
10221 rtx x
= delegitimize_mem_from_attrs (orig_x
);
10223 if (GET_CODE (x
) == LO_SUM
10224 && GET_CODE (XEXP (x
, 1)) == UNSPEC
10225 && XINT (XEXP (x
, 1), 1) == UNSPEC_DLTIND14R
)
10226 return gen_const_mem (Pmode
, XVECEXP (XEXP (x
, 1), 0, 0));
10231 pa_internal_arg_pointer (void)
10233 /* The argument pointer and the hard frame pointer are the same in
10234 the 32-bit runtime, so we don't need a copy. */
10236 return copy_to_reg (virtual_incoming_args_rtx
);
10238 return virtual_incoming_args_rtx
;
10241 /* Given FROM and TO register numbers, say whether this elimination is allowed.
10242 Frame pointer elimination is automatically handled. */
10245 pa_can_eliminate (const int from
, const int to
)
10247 /* The argument cannot be eliminated in the 64-bit runtime. */
10248 if (TARGET_64BIT
&& from
== ARG_POINTER_REGNUM
)
10251 return (from
== HARD_FRAME_POINTER_REGNUM
&& to
== STACK_POINTER_REGNUM
10252 ? ! frame_pointer_needed
10256 /* Define the offset between two registers, FROM to be eliminated and its
10257 replacement TO, at the start of a routine. */
10259 pa_initial_elimination_offset (int from
, int to
)
10261 HOST_WIDE_INT offset
;
10263 if ((from
== HARD_FRAME_POINTER_REGNUM
|| from
== FRAME_POINTER_REGNUM
)
10264 && to
== STACK_POINTER_REGNUM
)
10265 offset
= -pa_compute_frame_size (get_frame_size (), 0);
10266 else if (from
== FRAME_POINTER_REGNUM
&& to
== HARD_FRAME_POINTER_REGNUM
)
10269 gcc_unreachable ();
10275 pa_conditional_register_usage (void)
10279 if (!TARGET_64BIT
&& !TARGET_PA_11
)
10281 for (i
= 56; i
<= FP_REG_LAST
; i
++)
10282 fixed_regs
[i
] = call_used_regs
[i
] = 1;
10283 for (i
= 33; i
< 56; i
+= 2)
10284 fixed_regs
[i
] = call_used_regs
[i
] = 1;
10286 if (TARGET_DISABLE_FPREGS
|| TARGET_SOFT_FLOAT
)
10288 for (i
= FP_REG_FIRST
; i
<= FP_REG_LAST
; i
++)
10289 fixed_regs
[i
] = call_used_regs
[i
] = 1;
10292 fixed_regs
[PIC_OFFSET_TABLE_REGNUM
] = 1;
10295 /* Target hook for c_mode_for_suffix. */
10297 static machine_mode
10298 pa_c_mode_for_suffix (char suffix
)
10300 if (HPUX_LONG_DOUBLE_LIBRARY
)
10309 /* Target hook for function_section. */
10312 pa_function_section (tree decl
, enum node_frequency freq
,
10313 bool startup
, bool exit
)
10315 /* Put functions in text section if target doesn't have named sections. */
10316 if (!targetm_common
.have_named_sections
)
10317 return text_section
;
10319 /* Force nested functions into the same section as the containing
10322 && DECL_SECTION_NAME (decl
) == NULL
10323 && DECL_CONTEXT (decl
) != NULL_TREE
10324 && TREE_CODE (DECL_CONTEXT (decl
)) == FUNCTION_DECL
10325 && DECL_SECTION_NAME (DECL_CONTEXT (decl
)) == NULL
)
10326 return function_section (DECL_CONTEXT (decl
));
10328 /* Otherwise, use the default function section. */
10329 return default_function_section (decl
, freq
, startup
, exit
);
10332 /* Implement TARGET_LEGITIMATE_CONSTANT_P.
10334 In 64-bit mode, we reject CONST_DOUBLES. We also reject CONST_INTS
10335 that need more than three instructions to load prior to reload. This
10336 limit is somewhat arbitrary. It takes three instructions to load a
10337 CONST_INT from memory but two are memory accesses. It may be better
10338 to increase the allowed range for CONST_INTS. We may also be able
10339 to handle CONST_DOUBLES. */
10342 pa_legitimate_constant_p (machine_mode mode
, rtx x
)
10344 if (GET_MODE_CLASS (mode
) == MODE_FLOAT
&& x
!= CONST0_RTX (mode
))
10347 if (!NEW_HP_ASSEMBLER
&& !TARGET_GAS
&& GET_CODE (x
) == LABEL_REF
)
10350 /* TLS_MODEL_GLOBAL_DYNAMIC and TLS_MODEL_LOCAL_DYNAMIC are not
10351 legitimate constants. The other variants can't be handled by
10352 the move patterns after reload starts. */
10353 if (tls_referenced_p (x
))
10356 if (TARGET_64BIT
&& GET_CODE (x
) == CONST_DOUBLE
)
10360 && HOST_BITS_PER_WIDE_INT
> 32
10361 && GET_CODE (x
) == CONST_INT
10362 && !reload_in_progress
10363 && !reload_completed
10364 && !LEGITIMATE_64BIT_CONST_INT_P (INTVAL (x
))
10365 && !pa_cint_ok_for_move (UINTVAL (x
)))
10368 if (function_label_operand (x
, mode
))
10374 /* Implement TARGET_SECTION_TYPE_FLAGS. */
10376 static unsigned int
10377 pa_section_type_flags (tree decl
, const char *name
, int reloc
)
10379 unsigned int flags
;
10381 flags
= default_section_type_flags (decl
, name
, reloc
);
10383 /* Function labels are placed in the constant pool. This can
10384 cause a section conflict if decls are put in ".data.rel.ro"
10385 or ".data.rel.ro.local" using the __attribute__ construct. */
10386 if (strcmp (name
, ".data.rel.ro") == 0
10387 || strcmp (name
, ".data.rel.ro.local") == 0)
10388 flags
|= SECTION_WRITE
| SECTION_RELRO
;
10393 /* pa_legitimate_address_p recognizes an RTL expression that is a
10394 valid memory address for an instruction. The MODE argument is the
10395 machine mode for the MEM expression that wants to use this address.
10397 On HP PA-RISC, the legitimate address forms are REG+SMALLINT,
10398 REG+REG, and REG+(REG*SCALE). The indexed address forms are only
10399 available with floating point loads and stores, and integer loads.
10400 We get better code by allowing indexed addresses in the initial
10403 The acceptance of indexed addresses as legitimate implies that we
10404 must provide patterns for doing indexed integer stores, or the move
10405 expanders must force the address of an indexed store to a register.
10406 We have adopted the latter approach.
10408 Another function of pa_legitimate_address_p is to ensure that
10409 the base register is a valid pointer for indexed instructions.
10410 On targets that have non-equivalent space registers, we have to
10411 know at the time of assembler output which register in a REG+REG
10412 pair is the base register. The REG_POINTER flag is sometimes lost
10413 in reload and the following passes, so it can't be relied on during
10414 code generation. Thus, we either have to canonicalize the order
10415 of the registers in REG+REG indexed addresses, or treat REG+REG
10416 addresses separately and provide patterns for both permutations.
10418 The latter approach requires several hundred additional lines of
10419 code in pa.md. The downside to canonicalizing is that a PLUS
10420 in the wrong order can't combine to form to make a scaled indexed
10421 memory operand. As we won't need to canonicalize the operands if
10422 the REG_POINTER lossage can be fixed, it seems better canonicalize.
10424 We initially break out scaled indexed addresses in canonical order
10425 in pa_emit_move_sequence. LEGITIMIZE_ADDRESS also canonicalizes
10426 scaled indexed addresses during RTL generation. However, fold_rtx
10427 has its own opinion on how the operands of a PLUS should be ordered.
10428 If one of the operands is equivalent to a constant, it will make
10429 that operand the second operand. As the base register is likely to
10430 be equivalent to a SYMBOL_REF, we have made it the second operand.
10432 pa_legitimate_address_p accepts REG+REG as legitimate when the
10433 operands are in the order INDEX+BASE on targets with non-equivalent
10434 space registers, and in any order on targets with equivalent space
10435 registers. It accepts both MULT+BASE and BASE+MULT for scaled indexing.
10437 We treat a SYMBOL_REF as legitimate if it is part of the current
10438 function's constant-pool, because such addresses can actually be
10439 output as REG+SMALLINT. */
10442 pa_legitimate_address_p (machine_mode mode
, rtx x
, bool strict
)
10445 && (strict
? STRICT_REG_OK_FOR_BASE_P (x
)
10446 : REG_OK_FOR_BASE_P (x
)))
10447 || ((GET_CODE (x
) == PRE_DEC
|| GET_CODE (x
) == POST_DEC
10448 || GET_CODE (x
) == PRE_INC
|| GET_CODE (x
) == POST_INC
)
10449 && REG_P (XEXP (x
, 0))
10450 && (strict
? STRICT_REG_OK_FOR_BASE_P (XEXP (x
, 0))
10451 : REG_OK_FOR_BASE_P (XEXP (x
, 0)))))
10454 if (GET_CODE (x
) == PLUS
)
10458 /* For REG+REG, the base register should be in XEXP (x, 1),
10459 so check it first. */
10460 if (REG_P (XEXP (x
, 1))
10461 && (strict
? STRICT_REG_OK_FOR_BASE_P (XEXP (x
, 1))
10462 : REG_OK_FOR_BASE_P (XEXP (x
, 1))))
10463 base
= XEXP (x
, 1), index
= XEXP (x
, 0);
10464 else if (REG_P (XEXP (x
, 0))
10465 && (strict
? STRICT_REG_OK_FOR_BASE_P (XEXP (x
, 0))
10466 : REG_OK_FOR_BASE_P (XEXP (x
, 0))))
10467 base
= XEXP (x
, 0), index
= XEXP (x
, 1);
10471 if (GET_CODE (index
) == CONST_INT
)
10473 if (INT_5_BITS (index
))
10476 /* When INT14_OK_STRICT is false, a secondary reload is needed
10477 to adjust the displacement of SImode and DImode floating point
10478 instructions but this may fail when the register also needs
10479 reloading. So, we return false when STRICT is true. We
10480 also reject long displacements for float mode addresses since
10481 the majority of accesses will use floating point instructions
10482 that don't support 14-bit offsets. */
10483 if (!INT14_OK_STRICT
10484 && (strict
|| !(reload_in_progress
|| reload_completed
))
10489 return base14_operand (index
, mode
);
10492 if (!TARGET_DISABLE_INDEXING
10493 /* Only accept the "canonical" INDEX+BASE operand order
10494 on targets with non-equivalent space registers. */
10495 && (TARGET_NO_SPACE_REGS
10497 : (base
== XEXP (x
, 1) && REG_P (index
)
10498 && (reload_completed
10499 || (reload_in_progress
&& HARD_REGISTER_P (base
))
10500 || REG_POINTER (base
))
10501 && (reload_completed
10502 || (reload_in_progress
&& HARD_REGISTER_P (index
))
10503 || !REG_POINTER (index
))))
10504 && MODE_OK_FOR_UNSCALED_INDEXING_P (mode
)
10505 && (strict
? STRICT_REG_OK_FOR_INDEX_P (index
)
10506 : REG_OK_FOR_INDEX_P (index
))
10507 && borx_reg_operand (base
, Pmode
)
10508 && borx_reg_operand (index
, Pmode
))
10511 if (!TARGET_DISABLE_INDEXING
10512 && GET_CODE (index
) == MULT
10513 /* Only accept base operands with the REG_POINTER flag prior to
10514 reload on targets with non-equivalent space registers. */
10515 && (TARGET_NO_SPACE_REGS
10516 || (base
== XEXP (x
, 1)
10517 && (reload_completed
10518 || (reload_in_progress
&& HARD_REGISTER_P (base
))
10519 || REG_POINTER (base
))))
10520 && REG_P (XEXP (index
, 0))
10521 && GET_MODE (XEXP (index
, 0)) == Pmode
10522 && MODE_OK_FOR_SCALED_INDEXING_P (mode
)
10523 && (strict
? STRICT_REG_OK_FOR_INDEX_P (XEXP (index
, 0))
10524 : REG_OK_FOR_INDEX_P (XEXP (index
, 0)))
10525 && GET_CODE (XEXP (index
, 1)) == CONST_INT
10526 && INTVAL (XEXP (index
, 1))
10527 == (HOST_WIDE_INT
) GET_MODE_SIZE (mode
)
10528 && borx_reg_operand (base
, Pmode
))
10534 if (GET_CODE (x
) == LO_SUM
)
10536 rtx y
= XEXP (x
, 0);
10538 if (GET_CODE (y
) == SUBREG
)
10539 y
= SUBREG_REG (y
);
10542 && (strict
? STRICT_REG_OK_FOR_BASE_P (y
)
10543 : REG_OK_FOR_BASE_P (y
)))
10545 /* Needed for -fPIC */
10547 && GET_CODE (XEXP (x
, 1)) == UNSPEC
)
10550 if (!INT14_OK_STRICT
10551 && (strict
|| !(reload_in_progress
|| reload_completed
))
10556 if (CONSTANT_P (XEXP (x
, 1)))
10562 if (GET_CODE (x
) == CONST_INT
&& INT_5_BITS (x
))
10568 /* Look for machine dependent ways to make the invalid address AD a
10571 For the PA, transform:
10573 memory(X + <large int>)
10577 if (<large int> & mask) >= 16
10578 Y = (<large int> & ~mask) + mask + 1 Round up.
10580 Y = (<large int> & ~mask) Round down.
10582 memory (Z + (<large int> - Y));
10584 This makes reload inheritance and reload_cse work better since Z
10587 There may be more opportunities to improve code with this hook. */
10590 pa_legitimize_reload_address (rtx ad
, machine_mode mode
,
10591 int opnum
, int type
,
10592 int ind_levels ATTRIBUTE_UNUSED
)
10594 long offset
, newoffset
, mask
;
10595 rtx new_rtx
, temp
= NULL_RTX
;
10597 mask
= (GET_MODE_CLASS (mode
) == MODE_FLOAT
10598 && !INT14_OK_STRICT
? 0x1f : 0x3fff);
10600 if (optimize
&& GET_CODE (ad
) == PLUS
)
10601 temp
= simplify_binary_operation (PLUS
, Pmode
,
10602 XEXP (ad
, 0), XEXP (ad
, 1));
10604 new_rtx
= temp
? temp
: ad
;
10607 && GET_CODE (new_rtx
) == PLUS
10608 && GET_CODE (XEXP (new_rtx
, 0)) == REG
10609 && GET_CODE (XEXP (new_rtx
, 1)) == CONST_INT
)
10611 offset
= INTVAL (XEXP ((new_rtx
), 1));
10613 /* Choose rounding direction. Round up if we are >= halfway. */
10614 if ((offset
& mask
) >= ((mask
+ 1) / 2))
10615 newoffset
= (offset
& ~mask
) + mask
+ 1;
10617 newoffset
= offset
& ~mask
;
10619 /* Ensure that long displacements are aligned. */
10621 && (GET_MODE_CLASS (mode
) == MODE_FLOAT
10622 || (TARGET_64BIT
&& (mode
) == DImode
)))
10623 newoffset
&= ~(GET_MODE_SIZE (mode
) - 1);
10625 if (newoffset
!= 0 && VAL_14_BITS_P (newoffset
))
10627 temp
= gen_rtx_PLUS (Pmode
, XEXP (new_rtx
, 0),
10628 GEN_INT (newoffset
));
10629 ad
= gen_rtx_PLUS (Pmode
, temp
, GEN_INT (offset
- newoffset
));
10630 push_reload (XEXP (ad
, 0), 0, &XEXP (ad
, 0), 0,
10631 BASE_REG_CLASS
, Pmode
, VOIDmode
, 0, 0,
10632 opnum
, (enum reload_type
) type
);
10640 /* Output address vector. */
10643 pa_output_addr_vec (rtx lab
, rtx body
)
10645 int idx
, vlen
= XVECLEN (body
, 0);
10648 fputs ("\t.align 4\n", asm_out_file
);
10649 targetm
.asm_out
.internal_label (asm_out_file
, "L", CODE_LABEL_NUMBER (lab
));
10651 fputs ("\t.begin_brtab\n", asm_out_file
);
10652 for (idx
= 0; idx
< vlen
; idx
++)
10654 ASM_OUTPUT_ADDR_VEC_ELT
10655 (asm_out_file
, CODE_LABEL_NUMBER (XEXP (XVECEXP (body
, 0, idx
), 0)));
10658 fputs ("\t.end_brtab\n", asm_out_file
);
10661 /* Output address difference vector. */
10664 pa_output_addr_diff_vec (rtx lab
, rtx body
)
10666 rtx base
= XEXP (XEXP (body
, 0), 0);
10667 int idx
, vlen
= XVECLEN (body
, 1);
10669 targetm
.asm_out
.internal_label (asm_out_file
, "L", CODE_LABEL_NUMBER (lab
));
10671 fputs ("\t.begin_brtab\n", asm_out_file
);
10672 for (idx
= 0; idx
< vlen
; idx
++)
10674 ASM_OUTPUT_ADDR_DIFF_ELT
10677 CODE_LABEL_NUMBER (XEXP (XVECEXP (body
, 1, idx
), 0)),
10678 CODE_LABEL_NUMBER (base
));
10681 fputs ("\t.end_brtab\n", asm_out_file
);
10684 /* This is a helper function for the other atomic operations. This function
10685 emits a loop that contains SEQ that iterates until a compare-and-swap
10686 operation at the end succeeds. MEM is the memory to be modified. SEQ is
10687 a set of instructions that takes a value from OLD_REG as an input and
10688 produces a value in NEW_REG as an output. Before SEQ, OLD_REG will be
10689 set to the current contents of MEM. After SEQ, a compare-and-swap will
10690 attempt to update MEM with NEW_REG. The function returns true when the
10691 loop was generated successfully. */
10694 pa_expand_compare_and_swap_loop (rtx mem
, rtx old_reg
, rtx new_reg
, rtx seq
)
10696 machine_mode mode
= GET_MODE (mem
);
10697 rtx_code_label
*label
;
10698 rtx cmp_reg
, success
, oldval
;
10700 /* The loop we want to generate looks like
10706 (success, cmp_reg) = compare-and-swap(mem, old_reg, new_reg)
10710 Note that we only do the plain load from memory once. Subsequent
10711 iterations use the value loaded by the compare-and-swap pattern. */
10713 label
= gen_label_rtx ();
10714 cmp_reg
= gen_reg_rtx (mode
);
10716 emit_move_insn (cmp_reg
, mem
);
10717 emit_label (label
);
10718 emit_move_insn (old_reg
, cmp_reg
);
10722 success
= NULL_RTX
;
10724 if (!expand_atomic_compare_and_swap (&success
, &oldval
, mem
, old_reg
,
10725 new_reg
, false, MEMMODEL_SYNC_SEQ_CST
,
10729 if (oldval
!= cmp_reg
)
10730 emit_move_insn (cmp_reg
, oldval
);
10732 /* Mark this jump predicted not taken. */
10733 emit_cmp_and_jump_insns (success
, const0_rtx
, EQ
, const0_rtx
,
10734 GET_MODE (success
), 1, label
,
10735 profile_probability::guessed_never ());
10739 /* This function tries to implement an atomic exchange operation using a
10740 compare_and_swap loop. VAL is written to *MEM. The previous contents of
10741 *MEM are returned, using TARGET if possible. No memory model is required
10742 since a compare_and_swap loop is seq-cst. */
10745 pa_maybe_emit_compare_and_swap_exchange_loop (rtx target
, rtx mem
, rtx val
)
10747 machine_mode mode
= GET_MODE (mem
);
10749 if (can_compare_and_swap_p (mode
, true))
10751 if (!target
|| !register_operand (target
, mode
))
10752 target
= gen_reg_rtx (mode
);
10753 if (pa_expand_compare_and_swap_loop (mem
, target
, val
, NULL_RTX
))
10760 /* Implement TARGET_CALLEE_COPIES. The callee is responsible for copying
10761 arguments passed by hidden reference in the 32-bit HP runtime. Users
10762 can override this behavior for better compatibility with openmp at the
10763 risk of library incompatibilities. Arguments are always passed by value
10764 in the 64-bit HP runtime. */
10767 pa_callee_copies (cumulative_args_t cum ATTRIBUTE_UNUSED
,
10768 machine_mode mode ATTRIBUTE_UNUSED
,
10769 const_tree type ATTRIBUTE_UNUSED
,
10770 bool named ATTRIBUTE_UNUSED
)
10772 return !TARGET_CALLER_COPIES
;
10775 /* Implement TARGET_HARD_REGNO_NREGS. */
10777 static unsigned int
10778 pa_hard_regno_nregs (unsigned int regno ATTRIBUTE_UNUSED
, machine_mode mode
)
10780 return PA_HARD_REGNO_NREGS (regno
, mode
);
10783 /* Implement TARGET_HARD_REGNO_MODE_OK. */
10786 pa_hard_regno_mode_ok (unsigned int regno
, machine_mode mode
)
10788 return PA_HARD_REGNO_MODE_OK (regno
, mode
);
10791 /* Implement TARGET_STARTING_FRAME_OFFSET.
10793 On the 32-bit ports, we reserve one slot for the previous frame
10794 pointer and one fill slot. The fill slot is for compatibility
10795 with HP compiled programs. On the 64-bit ports, we reserve one
10796 slot for the previous frame pointer. */
10798 static HOST_WIDE_INT
10799 pa_starting_frame_offset (void)
10804 /* Figure out the size in words of the function argument. The size
10805 returned by this function should always be greater than zero because
10806 we pass variable and zero sized objects by reference. */
10809 pa_function_arg_size (machine_mode mode
, const_tree type
)
10811 HOST_WIDE_INT size
;
10813 size
= mode
!= BLKmode
? GET_MODE_SIZE (mode
) : int_size_in_bytes (type
);
10814 return CEIL (size
, UNITS_PER_WORD
);