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6b3d1e47 | 1 | /* Subroutines used for code generation on Vitesse IQ2000 processors |
85ec4feb | 2 | Copyright (C) 2003-2018 Free Software Foundation, Inc. |
6b3d1e47 | 3 | |
b7849684 | 4 | This file is part of GCC. |
6b3d1e47 | 5 | |
b7849684 | 6 | GCC is free software; you can redistribute it and/or modify |
6b3d1e47 | 7 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
6b3d1e47 SC |
9 | any later version. |
10 | ||
b7849684 | 11 | GCC is distributed in the hope that it will be useful, |
6b3d1e47 SC |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
6b3d1e47 | 19 | |
8fcc61f8 RS |
20 | #define IN_TARGET_CODE 1 |
21 | ||
6b3d1e47 SC |
22 | #include "config.h" |
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
c7131fb2 | 25 | #include "backend.h" |
e11c4407 | 26 | #include "target.h" |
c7131fb2 | 27 | #include "rtl.h" |
e11c4407 | 28 | #include "tree.h" |
314e6352 ML |
29 | #include "stringpool.h" |
30 | #include "attribs.h" | |
c7131fb2 | 31 | #include "df.h" |
4d0cdd0c | 32 | #include "memmodel.h" |
e11c4407 AM |
33 | #include "tm_p.h" |
34 | #include "optabs.h" | |
35 | #include "regs.h" | |
36 | #include "emit-rtl.h" | |
37 | #include "recog.h" | |
38 | #include "diagnostic-core.h" | |
d8a2d370 DN |
39 | #include "stor-layout.h" |
40 | #include "calls.h" | |
41 | #include "varasm.h" | |
6b3d1e47 SC |
42 | #include "output.h" |
43 | #include "insn-attr.h" | |
36566b39 | 44 | #include "explow.h" |
6b3d1e47 | 45 | #include "expr.h" |
6e34d3a3 | 46 | #include "langhooks.h" |
9b2b7279 | 47 | #include "builtins.h" |
6b3d1e47 | 48 | |
994c5d85 | 49 | /* This file should be included last. */ |
d58627a0 RS |
50 | #include "target-def.h" |
51 | ||
6b3d1e47 SC |
52 | /* Enumeration for all of the relational tests, so that we can build |
53 | arrays indexed by the test type, and not worry about the order | |
54 | of EQ, NE, etc. */ | |
55 | ||
b5144086 SC |
56 | enum internal_test |
57 | { | |
6b3d1e47 SC |
58 | ITEST_EQ, |
59 | ITEST_NE, | |
60 | ITEST_GT, | |
61 | ITEST_GE, | |
62 | ITEST_LT, | |
63 | ITEST_LE, | |
64 | ITEST_GTU, | |
65 | ITEST_GEU, | |
66 | ITEST_LTU, | |
67 | ITEST_LEU, | |
68 | ITEST_MAX | |
69 | }; | |
70 | ||
71 | struct constant; | |
72 | ||
6b3d1e47 SC |
73 | \f |
74 | /* Structure to be filled in by compute_frame_size with register | |
75 | save masks, and offsets for the current function. */ | |
76 | ||
77 | struct iq2000_frame_info | |
78 | { | |
b5144086 SC |
79 | long total_size; /* # bytes that the entire frame takes up. */ |
80 | long var_size; /* # bytes that variables take up. */ | |
81 | long args_size; /* # bytes that outgoing arguments take up. */ | |
82 | long extra_size; /* # bytes of extra gunk. */ | |
83 | int gp_reg_size; /* # bytes needed to store gp regs. */ | |
84 | int fp_reg_size; /* # bytes needed to store fp regs. */ | |
85 | long mask; /* Mask of saved gp registers. */ | |
86 | long gp_save_offset; /* Offset from vfp to store gp registers. */ | |
87 | long fp_save_offset; /* Offset from vfp to store fp registers. */ | |
88 | long gp_sp_offset; /* Offset from new sp to store gp registers. */ | |
89 | long fp_sp_offset; /* Offset from new sp to store fp registers. */ | |
90 | int initialized; /* != 0 if frame size already calculated. */ | |
91 | int num_gp; /* Number of gp registers saved. */ | |
92 | } iq2000_frame_info; | |
93 | ||
d1b38208 | 94 | struct GTY(()) machine_function |
6b3d1e47 SC |
95 | { |
96 | /* Current frame information, calculated by compute_frame_size. */ | |
b5144086 SC |
97 | long total_size; /* # bytes that the entire frame takes up. */ |
98 | long var_size; /* # bytes that variables take up. */ | |
99 | long args_size; /* # bytes that outgoing arguments take up. */ | |
100 | long extra_size; /* # bytes of extra gunk. */ | |
101 | int gp_reg_size; /* # bytes needed to store gp regs. */ | |
102 | int fp_reg_size; /* # bytes needed to store fp regs. */ | |
103 | long mask; /* Mask of saved gp registers. */ | |
104 | long gp_save_offset; /* Offset from vfp to store gp registers. */ | |
105 | long fp_save_offset; /* Offset from vfp to store fp registers. */ | |
106 | long gp_sp_offset; /* Offset from new sp to store gp registers. */ | |
107 | long fp_sp_offset; /* Offset from new sp to store fp registers. */ | |
108 | int initialized; /* != 0 if frame size already calculated. */ | |
109 | int num_gp; /* Number of gp registers saved. */ | |
6b3d1e47 SC |
110 | }; |
111 | ||
112 | /* Global variables for machine-dependent things. */ | |
113 | ||
bf7c1408 NF |
114 | /* List of all IQ2000 punctuation characters used by iq2000_print_operand. */ |
115 | static char iq2000_print_operand_punct[256]; | |
6b3d1e47 | 116 | |
b5144086 SC |
117 | /* Which instruction set architecture to use. */ |
118 | int iq2000_isa; | |
6b3d1e47 | 119 | |
b5144086 | 120 | /* Local variables. */ |
6b3d1e47 | 121 | |
b5144086 SC |
122 | /* The next branch instruction is a branch likely, not branch normal. */ |
123 | static int iq2000_branch_likely; | |
124 | ||
125 | /* Count of delay slots and how many are filled. */ | |
126 | static int dslots_load_total; | |
127 | static int dslots_load_filled; | |
128 | static int dslots_jump_total; | |
129 | ||
130 | /* # of nops needed by previous insn. */ | |
131 | static int dslots_number_nops; | |
132 | ||
112cdef5 | 133 | /* Number of 1/2/3 word references to data items (i.e., not jal's). */ |
b5144086 SC |
134 | static int num_refs[3]; |
135 | ||
136 | /* Registers to check for load delay. */ | |
137 | static rtx iq2000_load_reg; | |
138 | static rtx iq2000_load_reg2; | |
139 | static rtx iq2000_load_reg3; | |
140 | static rtx iq2000_load_reg4; | |
141 | ||
6b3d1e47 | 142 | /* Mode used for saving/restoring general purpose registers. */ |
ef4bddc2 | 143 | static machine_mode gpr_mode; |
6b3d1e47 | 144 | |
6b3d1e47 SC |
145 | \f |
146 | /* Initialize the GCC target structure. */ | |
b5144086 | 147 | static struct machine_function* iq2000_init_machine_status (void); |
c5387660 | 148 | static void iq2000_option_override (void); |
ef4bddc2 | 149 | static section *iq2000_select_rtx_section (machine_mode, rtx, |
d6b5193b | 150 | unsigned HOST_WIDE_INT); |
b5144086 | 151 | static void iq2000_init_builtins (void); |
ef4bddc2 | 152 | static rtx iq2000_expand_builtin (tree, rtx, rtx, machine_mode, int); |
586de218 | 153 | static bool iq2000_return_in_memory (const_tree, const_tree); |
d5cc9181 | 154 | static void iq2000_setup_incoming_varargs (cumulative_args_t, |
ef4bddc2 | 155 | machine_mode, tree, int *, |
69a45040 | 156 | int); |
e548c9df | 157 | static bool iq2000_rtx_costs (rtx, machine_mode, int, int, int *, bool); |
ef4bddc2 | 158 | static int iq2000_address_cost (rtx, machine_mode, addr_space_t, |
b413068c | 159 | bool); |
d6b5193b | 160 | static section *iq2000_select_section (tree, int, unsigned HOST_WIDE_INT); |
ef4bddc2 RS |
161 | static rtx iq2000_legitimize_address (rtx, rtx, machine_mode); |
162 | static bool iq2000_pass_by_reference (cumulative_args_t, machine_mode, | |
586de218 | 163 | const_tree, bool); |
ef4bddc2 | 164 | static int iq2000_arg_partial_bytes (cumulative_args_t, machine_mode, |
78a52f11 | 165 | tree, bool); |
d5cc9181 | 166 | static rtx iq2000_function_arg (cumulative_args_t, |
ef4bddc2 | 167 | machine_mode, const_tree, bool); |
d5cc9181 | 168 | static void iq2000_function_arg_advance (cumulative_args_t, |
ef4bddc2 | 169 | machine_mode, const_tree, bool); |
76b0cbf8 | 170 | static pad_direction iq2000_function_arg_padding (machine_mode, const_tree); |
ef4bddc2 | 171 | static unsigned int iq2000_function_arg_boundary (machine_mode, |
c2ed6cf8 | 172 | const_tree); |
d7bd8aeb | 173 | static void iq2000_va_start (tree, rtx); |
ef4bddc2 | 174 | static bool iq2000_legitimate_address_p (machine_mode, rtx, bool); |
7b5cbb57 | 175 | static bool iq2000_can_eliminate (const int, const int); |
f4a33d37 RH |
176 | static void iq2000_asm_trampoline_template (FILE *); |
177 | static void iq2000_trampoline_init (rtx, tree, rtx); | |
7ae62237 | 178 | static rtx iq2000_function_value (const_tree, const_tree, bool); |
ef4bddc2 | 179 | static rtx iq2000_libcall_value (machine_mode, const_rtx); |
bf7c1408 | 180 | static void iq2000_print_operand (FILE *, rtx, int); |
cc8ca59e | 181 | static void iq2000_print_operand_address (FILE *, machine_mode, rtx); |
bf7c1408 | 182 | static bool iq2000_print_operand_punct_valid_p (unsigned char code); |
f939c3e6 | 183 | static bool iq2000_hard_regno_mode_ok (unsigned int, machine_mode); |
99e1629f | 184 | static bool iq2000_modes_tieable_p (machine_mode, machine_mode); |
58e17cf8 | 185 | static HOST_WIDE_INT iq2000_constant_alignment (const_tree, HOST_WIDE_INT); |
2a31c321 | 186 | static HOST_WIDE_INT iq2000_starting_frame_offset (void); |
b5144086 SC |
187 | |
188 | #undef TARGET_INIT_BUILTINS | |
189 | #define TARGET_INIT_BUILTINS iq2000_init_builtins | |
190 | #undef TARGET_EXPAND_BUILTIN | |
191 | #define TARGET_EXPAND_BUILTIN iq2000_expand_builtin | |
192 | #undef TARGET_ASM_SELECT_RTX_SECTION | |
193 | #define TARGET_ASM_SELECT_RTX_SECTION iq2000_select_rtx_section | |
c5387660 JM |
194 | #undef TARGET_OPTION_OVERRIDE |
195 | #define TARGET_OPTION_OVERRIDE iq2000_option_override | |
b5144086 SC |
196 | #undef TARGET_RTX_COSTS |
197 | #define TARGET_RTX_COSTS iq2000_rtx_costs | |
198 | #undef TARGET_ADDRESS_COST | |
199 | #define TARGET_ADDRESS_COST iq2000_address_cost | |
200 | #undef TARGET_ASM_SELECT_SECTION | |
201 | #define TARGET_ASM_SELECT_SECTION iq2000_select_section | |
6b3d1e47 | 202 | |
506d7b68 PB |
203 | #undef TARGET_LEGITIMIZE_ADDRESS |
204 | #define TARGET_LEGITIMIZE_ADDRESS iq2000_legitimize_address | |
205 | ||
434aeebb RS |
206 | /* The assembler supports switchable .bss sections, but |
207 | iq2000_select_section doesn't yet make use of them. */ | |
208 | #undef TARGET_HAVE_SWITCHABLE_BSS_SECTIONS | |
209 | #define TARGET_HAVE_SWITCHABLE_BSS_SECTIONS false | |
210 | ||
bf7c1408 NF |
211 | #undef TARGET_PRINT_OPERAND |
212 | #define TARGET_PRINT_OPERAND iq2000_print_operand | |
213 | #undef TARGET_PRINT_OPERAND_ADDRESS | |
214 | #define TARGET_PRINT_OPERAND_ADDRESS iq2000_print_operand_address | |
215 | #undef TARGET_PRINT_OPERAND_PUNCT_VALID_P | |
216 | #define TARGET_PRINT_OPERAND_PUNCT_VALID_P iq2000_print_operand_punct_valid_p | |
217 | ||
cde0f3fd PB |
218 | #undef TARGET_PROMOTE_FUNCTION_MODE |
219 | #define TARGET_PROMOTE_FUNCTION_MODE default_promote_function_mode_always_promote | |
69a45040 | 220 | #undef TARGET_PROMOTE_PROTOTYPES |
586de218 | 221 | #define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true |
69a45040 | 222 | |
7ae62237 AS |
223 | #undef TARGET_FUNCTION_VALUE |
224 | #define TARGET_FUNCTION_VALUE iq2000_function_value | |
225 | #undef TARGET_LIBCALL_VALUE | |
226 | #define TARGET_LIBCALL_VALUE iq2000_libcall_value | |
69a45040 KH |
227 | #undef TARGET_RETURN_IN_MEMORY |
228 | #define TARGET_RETURN_IN_MEMORY iq2000_return_in_memory | |
8cd5a4e0 RH |
229 | #undef TARGET_PASS_BY_REFERENCE |
230 | #define TARGET_PASS_BY_REFERENCE iq2000_pass_by_reference | |
6cdd5672 RH |
231 | #undef TARGET_CALLEE_COPIES |
232 | #define TARGET_CALLEE_COPIES hook_callee_copies_named | |
78a52f11 RH |
233 | #undef TARGET_ARG_PARTIAL_BYTES |
234 | #define TARGET_ARG_PARTIAL_BYTES iq2000_arg_partial_bytes | |
24ef86d7 NF |
235 | #undef TARGET_FUNCTION_ARG |
236 | #define TARGET_FUNCTION_ARG iq2000_function_arg | |
237 | #undef TARGET_FUNCTION_ARG_ADVANCE | |
238 | #define TARGET_FUNCTION_ARG_ADVANCE iq2000_function_arg_advance | |
76b0cbf8 RS |
239 | #undef TARGET_FUNCTION_ARG_PADDING |
240 | #define TARGET_FUNCTION_ARG_PADDING iq2000_function_arg_padding | |
c2ed6cf8 NF |
241 | #undef TARGET_FUNCTION_ARG_BOUNDARY |
242 | #define TARGET_FUNCTION_ARG_BOUNDARY iq2000_function_arg_boundary | |
69a45040 KH |
243 | |
244 | #undef TARGET_SETUP_INCOMING_VARARGS | |
245 | #define TARGET_SETUP_INCOMING_VARARGS iq2000_setup_incoming_varargs | |
246 | #undef TARGET_STRICT_ARGUMENT_NAMING | |
247 | #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_true | |
248 | ||
d7bd8aeb JJ |
249 | #undef TARGET_EXPAND_BUILTIN_VA_START |
250 | #define TARGET_EXPAND_BUILTIN_VA_START iq2000_va_start | |
251 | ||
d81db636 SB |
252 | #undef TARGET_LRA_P |
253 | #define TARGET_LRA_P hook_bool_void_false | |
254 | ||
c6c3dba9 PB |
255 | #undef TARGET_LEGITIMATE_ADDRESS_P |
256 | #define TARGET_LEGITIMATE_ADDRESS_P iq2000_legitimate_address_p | |
257 | ||
7b5cbb57 AS |
258 | #undef TARGET_CAN_ELIMINATE |
259 | #define TARGET_CAN_ELIMINATE iq2000_can_eliminate | |
260 | ||
f4a33d37 RH |
261 | #undef TARGET_ASM_TRAMPOLINE_TEMPLATE |
262 | #define TARGET_ASM_TRAMPOLINE_TEMPLATE iq2000_asm_trampoline_template | |
263 | #undef TARGET_TRAMPOLINE_INIT | |
264 | #define TARGET_TRAMPOLINE_INIT iq2000_trampoline_init | |
265 | ||
f939c3e6 RS |
266 | #undef TARGET_HARD_REGNO_MODE_OK |
267 | #define TARGET_HARD_REGNO_MODE_OK iq2000_hard_regno_mode_ok | |
99e1629f RS |
268 | #undef TARGET_MODES_TIEABLE_P |
269 | #define TARGET_MODES_TIEABLE_P iq2000_modes_tieable_p | |
f939c3e6 | 270 | |
58e17cf8 RS |
271 | #undef TARGET_CONSTANT_ALIGNMENT |
272 | #define TARGET_CONSTANT_ALIGNMENT iq2000_constant_alignment | |
273 | ||
2a31c321 RS |
274 | #undef TARGET_STARTING_FRAME_OFFSET |
275 | #define TARGET_STARTING_FRAME_OFFSET iq2000_starting_frame_offset | |
276 | ||
6b3d1e47 SC |
277 | struct gcc_target targetm = TARGET_INITIALIZER; |
278 | \f | |
6b3d1e47 SC |
279 | /* Return nonzero if we split the address into high and low parts. */ |
280 | ||
281 | int | |
ef4bddc2 | 282 | iq2000_check_split (rtx address, machine_mode mode) |
6b3d1e47 SC |
283 | { |
284 | /* This is the same check used in simple_memory_operand. | |
285 | We use it here because LO_SUM is not offsettable. */ | |
286 | if (GET_MODE_SIZE (mode) > (unsigned) UNITS_PER_WORD) | |
287 | return 0; | |
288 | ||
289 | if ((GET_CODE (address) == SYMBOL_REF) | |
290 | || (GET_CODE (address) == CONST | |
291 | && GET_CODE (XEXP (XEXP (address, 0), 0)) == SYMBOL_REF) | |
292 | || GET_CODE (address) == LABEL_REF) | |
293 | return 1; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | /* Return nonzero if REG is valid for MODE. */ | |
299 | ||
300 | int | |
b7849684 | 301 | iq2000_reg_mode_ok_for_base_p (rtx reg, |
ef4bddc2 | 302 | machine_mode mode ATTRIBUTE_UNUSED, |
b7849684 | 303 | int strict) |
6b3d1e47 SC |
304 | { |
305 | return (strict | |
306 | ? REGNO_MODE_OK_FOR_BASE_P (REGNO (reg), mode) | |
307 | : GP_REG_OR_PSEUDO_NONSTRICT_P (REGNO (reg), mode)); | |
308 | } | |
309 | ||
310 | /* Return a nonzero value if XINSN is a legitimate address for a | |
4375e090 | 311 | memory operand of the indicated MODE. STRICT is nonzero if this |
6b3d1e47 SC |
312 | function is called during reload. */ |
313 | ||
c6c3dba9 | 314 | bool |
ef4bddc2 | 315 | iq2000_legitimate_address_p (machine_mode mode, rtx xinsn, bool strict) |
6b3d1e47 SC |
316 | { |
317 | if (TARGET_DEBUG_A_MODE) | |
318 | { | |
331d9186 | 319 | GO_PRINTF2 ("\n========== legitimate_address_p, %sstrict\n", |
6b3d1e47 SC |
320 | strict ? "" : "not "); |
321 | GO_DEBUG_RTX (xinsn); | |
322 | } | |
323 | ||
324 | /* Check for constant before stripping off SUBREG, so that we don't | |
325 | accept (subreg (const_int)) which will fail to reload. */ | |
326 | if (CONSTANT_ADDRESS_P (xinsn) | |
327 | && ! (iq2000_check_split (xinsn, mode)) | |
328 | && ! (GET_CODE (xinsn) == CONST_INT && ! SMALL_INT (xinsn))) | |
329 | return 1; | |
330 | ||
331 | while (GET_CODE (xinsn) == SUBREG) | |
332 | xinsn = SUBREG_REG (xinsn); | |
333 | ||
334 | if (GET_CODE (xinsn) == REG | |
335 | && iq2000_reg_mode_ok_for_base_p (xinsn, mode, strict)) | |
336 | return 1; | |
337 | ||
338 | if (GET_CODE (xinsn) == LO_SUM) | |
339 | { | |
b5144086 SC |
340 | rtx xlow0 = XEXP (xinsn, 0); |
341 | rtx xlow1 = XEXP (xinsn, 1); | |
6b3d1e47 SC |
342 | |
343 | while (GET_CODE (xlow0) == SUBREG) | |
344 | xlow0 = SUBREG_REG (xlow0); | |
345 | if (GET_CODE (xlow0) == REG | |
346 | && iq2000_reg_mode_ok_for_base_p (xlow0, mode, strict) | |
347 | && iq2000_check_split (xlow1, mode)) | |
348 | return 1; | |
349 | } | |
350 | ||
351 | if (GET_CODE (xinsn) == PLUS) | |
352 | { | |
b5144086 SC |
353 | rtx xplus0 = XEXP (xinsn, 0); |
354 | rtx xplus1 = XEXP (xinsn, 1); | |
355 | enum rtx_code code0; | |
356 | enum rtx_code code1; | |
6b3d1e47 SC |
357 | |
358 | while (GET_CODE (xplus0) == SUBREG) | |
359 | xplus0 = SUBREG_REG (xplus0); | |
360 | code0 = GET_CODE (xplus0); | |
361 | ||
362 | while (GET_CODE (xplus1) == SUBREG) | |
363 | xplus1 = SUBREG_REG (xplus1); | |
364 | code1 = GET_CODE (xplus1); | |
365 | ||
366 | if (code0 == REG | |
367 | && iq2000_reg_mode_ok_for_base_p (xplus0, mode, strict)) | |
368 | { | |
369 | if (code1 == CONST_INT && SMALL_INT (xplus1) | |
370 | && SMALL_INT_UNSIGNED (xplus1) /* No negative offsets */) | |
371 | return 1; | |
372 | } | |
373 | } | |
374 | ||
375 | if (TARGET_DEBUG_A_MODE) | |
ef4bddc2 | 376 | GO_PRINTF ("Not a machine_mode mode, legitimate address\n"); |
6b3d1e47 SC |
377 | |
378 | /* The address was not legitimate. */ | |
379 | return 0; | |
380 | } | |
381 | \f | |
382 | /* Returns an operand string for the given instruction's delay slot, | |
383 | after updating filled delay slot statistics. | |
384 | ||
385 | We assume that operands[0] is the target register that is set. | |
386 | ||
387 | In order to check the next insn, most of this functionality is moved | |
388 | to FINAL_PRESCAN_INSN, and we just set the global variables that | |
389 | it needs. */ | |
390 | ||
391 | const char * | |
b7849684 | 392 | iq2000_fill_delay_slot (const char *ret, enum delay_type type, rtx operands[], |
b32d5189 | 393 | rtx_insn *cur_insn) |
6b3d1e47 | 394 | { |
b5144086 | 395 | rtx set_reg; |
ef4bddc2 | 396 | machine_mode mode; |
b32d5189 | 397 | rtx_insn *next_insn = cur_insn ? NEXT_INSN (cur_insn) : NULL; |
b5144086 | 398 | int num_nops; |
6b3d1e47 SC |
399 | |
400 | if (type == DELAY_LOAD || type == DELAY_FCMP) | |
401 | num_nops = 1; | |
402 | ||
403 | else | |
404 | num_nops = 0; | |
405 | ||
406 | /* Make sure that we don't put nop's after labels. */ | |
407 | next_insn = NEXT_INSN (cur_insn); | |
408 | while (next_insn != 0 | |
b64925dc | 409 | && (NOTE_P (next_insn) || LABEL_P (next_insn))) |
6b3d1e47 SC |
410 | next_insn = NEXT_INSN (next_insn); |
411 | ||
412 | dslots_load_total += num_nops; | |
413 | if (TARGET_DEBUG_C_MODE | |
414 | || type == DELAY_NONE | |
415 | || operands == 0 | |
416 | || cur_insn == 0 | |
417 | || next_insn == 0 | |
b64925dc | 418 | || LABEL_P (next_insn) |
6b3d1e47 SC |
419 | || (set_reg = operands[0]) == 0) |
420 | { | |
421 | dslots_number_nops = 0; | |
422 | iq2000_load_reg = 0; | |
423 | iq2000_load_reg2 = 0; | |
424 | iq2000_load_reg3 = 0; | |
425 | iq2000_load_reg4 = 0; | |
b5144086 | 426 | |
6b3d1e47 SC |
427 | return ret; |
428 | } | |
429 | ||
430 | set_reg = operands[0]; | |
431 | if (set_reg == 0) | |
432 | return ret; | |
433 | ||
434 | while (GET_CODE (set_reg) == SUBREG) | |
435 | set_reg = SUBREG_REG (set_reg); | |
436 | ||
437 | mode = GET_MODE (set_reg); | |
438 | dslots_number_nops = num_nops; | |
439 | iq2000_load_reg = set_reg; | |
440 | if (GET_MODE_SIZE (mode) | |
441 | > (unsigned) (UNITS_PER_WORD)) | |
442 | iq2000_load_reg2 = gen_rtx_REG (SImode, REGNO (set_reg) + 1); | |
443 | else | |
444 | iq2000_load_reg2 = 0; | |
445 | ||
446 | return ret; | |
447 | } | |
448 | \f | |
449 | /* Determine whether a memory reference takes one (based off of the GP | |
450 | pointer), two (normal), or three (label + reg) instructions, and bump the | |
451 | appropriate counter for -mstats. */ | |
452 | ||
453 | static void | |
b7849684 | 454 | iq2000_count_memory_refs (rtx op, int num) |
6b3d1e47 SC |
455 | { |
456 | int additional = 0; | |
457 | int n_words = 0; | |
458 | rtx addr, plus0, plus1; | |
459 | enum rtx_code code0, code1; | |
460 | int looping; | |
461 | ||
462 | if (TARGET_DEBUG_B_MODE) | |
463 | { | |
464 | fprintf (stderr, "\n========== iq2000_count_memory_refs:\n"); | |
465 | debug_rtx (op); | |
466 | } | |
467 | ||
468 | /* Skip MEM if passed, otherwise handle movsi of address. */ | |
469 | addr = (GET_CODE (op) != MEM) ? op : XEXP (op, 0); | |
470 | ||
471 | /* Loop, going through the address RTL. */ | |
472 | do | |
473 | { | |
474 | looping = FALSE; | |
475 | switch (GET_CODE (addr)) | |
476 | { | |
477 | case REG: | |
478 | case CONST_INT: | |
479 | case LO_SUM: | |
480 | break; | |
481 | ||
482 | case PLUS: | |
483 | plus0 = XEXP (addr, 0); | |
484 | plus1 = XEXP (addr, 1); | |
485 | code0 = GET_CODE (plus0); | |
486 | code1 = GET_CODE (plus1); | |
487 | ||
488 | if (code0 == REG) | |
489 | { | |
490 | additional++; | |
491 | addr = plus1; | |
492 | looping = 1; | |
493 | continue; | |
494 | } | |
495 | ||
496 | if (code0 == CONST_INT) | |
497 | { | |
498 | addr = plus1; | |
499 | looping = 1; | |
500 | continue; | |
501 | } | |
502 | ||
503 | if (code1 == REG) | |
504 | { | |
505 | additional++; | |
506 | addr = plus0; | |
507 | looping = 1; | |
508 | continue; | |
509 | } | |
510 | ||
511 | if (code1 == CONST_INT) | |
512 | { | |
513 | addr = plus0; | |
514 | looping = 1; | |
515 | continue; | |
516 | } | |
517 | ||
518 | if (code0 == SYMBOL_REF || code0 == LABEL_REF || code0 == CONST) | |
519 | { | |
520 | addr = plus0; | |
521 | looping = 1; | |
522 | continue; | |
523 | } | |
524 | ||
525 | if (code1 == SYMBOL_REF || code1 == LABEL_REF || code1 == CONST) | |
526 | { | |
527 | addr = plus1; | |
528 | looping = 1; | |
529 | continue; | |
530 | } | |
531 | ||
532 | break; | |
533 | ||
534 | case LABEL_REF: | |
b5144086 | 535 | n_words = 2; /* Always 2 words. */ |
6b3d1e47 SC |
536 | break; |
537 | ||
538 | case CONST: | |
539 | addr = XEXP (addr, 0); | |
540 | looping = 1; | |
541 | continue; | |
542 | ||
543 | case SYMBOL_REF: | |
544 | n_words = SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
545 | break; | |
546 | ||
547 | default: | |
548 | break; | |
549 | } | |
550 | } | |
551 | while (looping); | |
552 | ||
553 | if (n_words == 0) | |
554 | return; | |
555 | ||
556 | n_words += additional; | |
557 | if (n_words > 3) | |
558 | n_words = 3; | |
559 | ||
560 | num_refs[n_words-1] += num; | |
561 | } | |
562 | \f | |
b5144086 SC |
563 | /* Abort after printing out a specific insn. */ |
564 | ||
565 | static void | |
566 | abort_with_insn (rtx insn, const char * reason) | |
567 | { | |
568 | error (reason); | |
569 | debug_rtx (insn); | |
292c8018 | 570 | fancy_abort (__FILE__, __LINE__, __FUNCTION__); |
b5144086 SC |
571 | } |
572 | \f | |
6b3d1e47 SC |
573 | /* Return the appropriate instructions to move one operand to another. */ |
574 | ||
575 | const char * | |
b32d5189 | 576 | iq2000_move_1word (rtx operands[], rtx_insn *insn, int unsignedp) |
6b3d1e47 SC |
577 | { |
578 | const char *ret = 0; | |
579 | rtx op0 = operands[0]; | |
580 | rtx op1 = operands[1]; | |
581 | enum rtx_code code0 = GET_CODE (op0); | |
582 | enum rtx_code code1 = GET_CODE (op1); | |
ef4bddc2 | 583 | machine_mode mode = GET_MODE (op0); |
6b3d1e47 SC |
584 | int subreg_offset0 = 0; |
585 | int subreg_offset1 = 0; | |
586 | enum delay_type delay = DELAY_NONE; | |
587 | ||
588 | while (code0 == SUBREG) | |
589 | { | |
590 | subreg_offset0 += subreg_regno_offset (REGNO (SUBREG_REG (op0)), | |
591 | GET_MODE (SUBREG_REG (op0)), | |
592 | SUBREG_BYTE (op0), | |
593 | GET_MODE (op0)); | |
594 | op0 = SUBREG_REG (op0); | |
595 | code0 = GET_CODE (op0); | |
596 | } | |
597 | ||
598 | while (code1 == SUBREG) | |
599 | { | |
600 | subreg_offset1 += subreg_regno_offset (REGNO (SUBREG_REG (op1)), | |
601 | GET_MODE (SUBREG_REG (op1)), | |
602 | SUBREG_BYTE (op1), | |
603 | GET_MODE (op1)); | |
604 | op1 = SUBREG_REG (op1); | |
605 | code1 = GET_CODE (op1); | |
606 | } | |
607 | ||
608 | /* For our purposes, a condition code mode is the same as SImode. */ | |
609 | if (mode == CCmode) | |
610 | mode = SImode; | |
611 | ||
612 | if (code0 == REG) | |
613 | { | |
614 | int regno0 = REGNO (op0) + subreg_offset0; | |
615 | ||
616 | if (code1 == REG) | |
617 | { | |
618 | int regno1 = REGNO (op1) + subreg_offset1; | |
619 | ||
620 | /* Do not do anything for assigning a register to itself */ | |
621 | if (regno0 == regno1) | |
622 | ret = ""; | |
623 | ||
624 | else if (GP_REG_P (regno0)) | |
625 | { | |
626 | if (GP_REG_P (regno1)) | |
627 | ret = "or\t%0,%%0,%1"; | |
628 | } | |
629 | ||
630 | } | |
631 | ||
632 | else if (code1 == MEM) | |
633 | { | |
634 | delay = DELAY_LOAD; | |
635 | ||
636 | if (TARGET_STATS) | |
637 | iq2000_count_memory_refs (op1, 1); | |
638 | ||
639 | if (GP_REG_P (regno0)) | |
640 | { | |
641 | /* For loads, use the mode of the memory item, instead of the | |
642 | target, so zero/sign extend can use this code as well. */ | |
643 | switch (GET_MODE (op1)) | |
644 | { | |
645 | default: | |
646 | break; | |
4e10a5a7 | 647 | case E_SFmode: |
6b3d1e47 SC |
648 | ret = "lw\t%0,%1"; |
649 | break; | |
4e10a5a7 RS |
650 | case E_SImode: |
651 | case E_CCmode: | |
6b3d1e47 SC |
652 | ret = "lw\t%0,%1"; |
653 | break; | |
4e10a5a7 | 654 | case E_HImode: |
6b3d1e47 SC |
655 | ret = (unsignedp) ? "lhu\t%0,%1" : "lh\t%0,%1"; |
656 | break; | |
4e10a5a7 | 657 | case E_QImode: |
6b3d1e47 SC |
658 | ret = (unsignedp) ? "lbu\t%0,%1" : "lb\t%0,%1"; |
659 | break; | |
660 | } | |
661 | } | |
662 | } | |
663 | ||
664 | else if (code1 == CONST_INT | |
665 | || (code1 == CONST_DOUBLE | |
666 | && GET_MODE (op1) == VOIDmode)) | |
667 | { | |
668 | if (code1 == CONST_DOUBLE) | |
669 | { | |
670 | /* This can happen when storing constants into long long | |
671 | bitfields. Just store the least significant word of | |
672 | the value. */ | |
673 | operands[1] = op1 = GEN_INT (CONST_DOUBLE_LOW (op1)); | |
674 | } | |
675 | ||
676 | if (INTVAL (op1) == 0) | |
677 | { | |
678 | if (GP_REG_P (regno0)) | |
679 | ret = "or\t%0,%%0,%z1"; | |
680 | } | |
681 | else if (GP_REG_P (regno0)) | |
682 | { | |
683 | if (SMALL_INT_UNSIGNED (op1)) | |
684 | ret = "ori\t%0,%%0,%x1\t\t\t# %1"; | |
685 | else if (SMALL_INT (op1)) | |
686 | ret = "addiu\t%0,%%0,%1\t\t\t# %1"; | |
687 | else | |
688 | ret = "lui\t%0,%X1\t\t\t# %1\n\tori\t%0,%0,%x1"; | |
689 | } | |
690 | } | |
691 | ||
692 | else if (code1 == CONST_DOUBLE && mode == SFmode) | |
693 | { | |
694 | if (op1 == CONST0_RTX (SFmode)) | |
695 | { | |
696 | if (GP_REG_P (regno0)) | |
697 | ret = "or\t%0,%%0,%."; | |
698 | } | |
699 | ||
700 | else | |
701 | { | |
702 | delay = DELAY_LOAD; | |
703 | ret = "li.s\t%0,%1"; | |
704 | } | |
705 | } | |
706 | ||
707 | else if (code1 == LABEL_REF) | |
708 | { | |
709 | if (TARGET_STATS) | |
710 | iq2000_count_memory_refs (op1, 1); | |
711 | ||
712 | ret = "la\t%0,%a1"; | |
713 | } | |
714 | ||
715 | else if (code1 == SYMBOL_REF || code1 == CONST) | |
716 | { | |
717 | if (TARGET_STATS) | |
718 | iq2000_count_memory_refs (op1, 1); | |
719 | ||
720 | ret = "la\t%0,%a1"; | |
721 | } | |
722 | ||
723 | else if (code1 == PLUS) | |
724 | { | |
725 | rtx add_op0 = XEXP (op1, 0); | |
726 | rtx add_op1 = XEXP (op1, 1); | |
727 | ||
728 | if (GET_CODE (XEXP (op1, 1)) == REG | |
729 | && GET_CODE (XEXP (op1, 0)) == CONST_INT) | |
730 | add_op0 = XEXP (op1, 1), add_op1 = XEXP (op1, 0); | |
731 | ||
732 | operands[2] = add_op0; | |
733 | operands[3] = add_op1; | |
734 | ret = "add%:\t%0,%2,%3"; | |
735 | } | |
736 | ||
737 | else if (code1 == HIGH) | |
738 | { | |
739 | operands[1] = XEXP (op1, 0); | |
740 | ret = "lui\t%0,%%hi(%1)"; | |
741 | } | |
742 | } | |
743 | ||
744 | else if (code0 == MEM) | |
745 | { | |
746 | if (TARGET_STATS) | |
747 | iq2000_count_memory_refs (op0, 1); | |
748 | ||
749 | if (code1 == REG) | |
750 | { | |
751 | int regno1 = REGNO (op1) + subreg_offset1; | |
752 | ||
753 | if (GP_REG_P (regno1)) | |
754 | { | |
755 | switch (mode) | |
756 | { | |
4e10a5a7 RS |
757 | case E_SFmode: ret = "sw\t%1,%0"; break; |
758 | case E_SImode: ret = "sw\t%1,%0"; break; | |
759 | case E_HImode: ret = "sh\t%1,%0"; break; | |
760 | case E_QImode: ret = "sb\t%1,%0"; break; | |
6b3d1e47 SC |
761 | default: break; |
762 | } | |
763 | } | |
764 | } | |
765 | ||
766 | else if (code1 == CONST_INT && INTVAL (op1) == 0) | |
767 | { | |
768 | switch (mode) | |
769 | { | |
4e10a5a7 RS |
770 | case E_SFmode: ret = "sw\t%z1,%0"; break; |
771 | case E_SImode: ret = "sw\t%z1,%0"; break; | |
772 | case E_HImode: ret = "sh\t%z1,%0"; break; | |
773 | case E_QImode: ret = "sb\t%z1,%0"; break; | |
6b3d1e47 SC |
774 | default: break; |
775 | } | |
776 | } | |
777 | ||
778 | else if (code1 == CONST_DOUBLE && op1 == CONST0_RTX (mode)) | |
779 | { | |
780 | switch (mode) | |
781 | { | |
4e10a5a7 RS |
782 | case E_SFmode: ret = "sw\t%.,%0"; break; |
783 | case E_SImode: ret = "sw\t%.,%0"; break; | |
784 | case E_HImode: ret = "sh\t%.,%0"; break; | |
785 | case E_QImode: ret = "sb\t%.,%0"; break; | |
6b3d1e47 SC |
786 | default: break; |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | if (ret == 0) | |
792 | { | |
793 | abort_with_insn (insn, "Bad move"); | |
794 | return 0; | |
795 | } | |
796 | ||
797 | if (delay != DELAY_NONE) | |
798 | return iq2000_fill_delay_slot (ret, delay, operands, insn); | |
799 | ||
800 | return ret; | |
801 | } | |
802 | \f | |
803 | /* Provide the costs of an addressing mode that contains ADDR. */ | |
804 | ||
b5144086 | 805 | static int |
ef4bddc2 | 806 | iq2000_address_cost (rtx addr, machine_mode mode, addr_space_t as, |
b413068c | 807 | bool speed) |
6b3d1e47 SC |
808 | { |
809 | switch (GET_CODE (addr)) | |
810 | { | |
811 | case LO_SUM: | |
812 | return 1; | |
813 | ||
814 | case LABEL_REF: | |
815 | return 2; | |
816 | ||
817 | case CONST: | |
818 | { | |
819 | rtx offset = const0_rtx; | |
b5144086 SC |
820 | |
821 | addr = eliminate_constant_term (XEXP (addr, 0), & offset); | |
6b3d1e47 SC |
822 | if (GET_CODE (addr) == LABEL_REF) |
823 | return 2; | |
824 | ||
825 | if (GET_CODE (addr) != SYMBOL_REF) | |
826 | return 4; | |
827 | ||
828 | if (! SMALL_INT (offset)) | |
829 | return 2; | |
830 | } | |
831 | ||
b5144086 | 832 | /* Fall through. */ |
6b3d1e47 SC |
833 | |
834 | case SYMBOL_REF: | |
835 | return SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
836 | ||
837 | case PLUS: | |
838 | { | |
b5144086 SC |
839 | rtx plus0 = XEXP (addr, 0); |
840 | rtx plus1 = XEXP (addr, 1); | |
6b3d1e47 SC |
841 | |
842 | if (GET_CODE (plus0) != REG && GET_CODE (plus1) == REG) | |
843 | plus0 = XEXP (addr, 1), plus1 = XEXP (addr, 0); | |
844 | ||
845 | if (GET_CODE (plus0) != REG) | |
846 | break; | |
847 | ||
848 | switch (GET_CODE (plus1)) | |
849 | { | |
850 | case CONST_INT: | |
851 | return SMALL_INT (plus1) ? 1 : 2; | |
852 | ||
853 | case CONST: | |
854 | case SYMBOL_REF: | |
855 | case LABEL_REF: | |
856 | case HIGH: | |
857 | case LO_SUM: | |
b413068c | 858 | return iq2000_address_cost (plus1, mode, as, speed) + 1; |
6b3d1e47 SC |
859 | |
860 | default: | |
861 | break; | |
862 | } | |
863 | } | |
864 | ||
865 | default: | |
866 | break; | |
867 | } | |
868 | ||
869 | return 4; | |
870 | } | |
871 | \f | |
872 | /* Make normal rtx_code into something we can index from an array. */ | |
873 | ||
874 | static enum internal_test | |
b7849684 | 875 | map_test_to_internal_test (enum rtx_code test_code) |
6b3d1e47 SC |
876 | { |
877 | enum internal_test test = ITEST_MAX; | |
878 | ||
879 | switch (test_code) | |
880 | { | |
881 | case EQ: test = ITEST_EQ; break; | |
882 | case NE: test = ITEST_NE; break; | |
883 | case GT: test = ITEST_GT; break; | |
884 | case GE: test = ITEST_GE; break; | |
885 | case LT: test = ITEST_LT; break; | |
886 | case LE: test = ITEST_LE; break; | |
887 | case GTU: test = ITEST_GTU; break; | |
888 | case GEU: test = ITEST_GEU; break; | |
889 | case LTU: test = ITEST_LTU; break; | |
890 | case LEU: test = ITEST_LEU; break; | |
891 | default: break; | |
892 | } | |
893 | ||
894 | return test; | |
895 | } | |
896 | \f | |
b5144086 SC |
897 | /* Generate the code to do a TEST_CODE comparison on two integer values CMP0 |
898 | and CMP1. P_INVERT is NULL or ptr if branch needs to reverse its test. | |
899 | The return value RESULT is: | |
6b3d1e47 | 900 | (reg:SI xx) The pseudo register the comparison is in |
b5144086 | 901 | 0 No register, generate a simple branch. */ |
6b3d1e47 SC |
902 | |
903 | rtx | |
b7849684 JE |
904 | gen_int_relational (enum rtx_code test_code, rtx result, rtx cmp0, rtx cmp1, |
905 | int *p_invert) | |
6b3d1e47 SC |
906 | { |
907 | struct cmp_info | |
908 | { | |
b5144086 SC |
909 | enum rtx_code test_code; /* Code to use in instruction (LT vs. LTU). */ |
910 | int const_low; /* Low bound of constant we can accept. */ | |
911 | int const_high; /* High bound of constant we can accept. */ | |
912 | int const_add; /* Constant to add (convert LE -> LT). */ | |
913 | int reverse_regs; /* Reverse registers in test. */ | |
914 | int invert_const; /* != 0 if invert value if cmp1 is constant. */ | |
915 | int invert_reg; /* != 0 if invert value if cmp1 is register. */ | |
6b3d1e47 SC |
916 | int unsignedp; /* != 0 for unsigned comparisons. */ |
917 | }; | |
918 | ||
b5144086 SC |
919 | static struct cmp_info info[ (int)ITEST_MAX ] = |
920 | { | |
6b3d1e47 SC |
921 | { XOR, 0, 65535, 0, 0, 0, 0, 0 }, /* EQ */ |
922 | { XOR, 0, 65535, 0, 0, 1, 1, 0 }, /* NE */ | |
923 | { LT, -32769, 32766, 1, 1, 1, 0, 0 }, /* GT */ | |
924 | { LT, -32768, 32767, 0, 0, 1, 1, 0 }, /* GE */ | |
925 | { LT, -32768, 32767, 0, 0, 0, 0, 0 }, /* LT */ | |
926 | { LT, -32769, 32766, 1, 1, 0, 1, 0 }, /* LE */ | |
927 | { LTU, -32769, 32766, 1, 1, 1, 0, 1 }, /* GTU */ | |
928 | { LTU, -32768, 32767, 0, 0, 1, 1, 1 }, /* GEU */ | |
929 | { LTU, -32768, 32767, 0, 0, 0, 0, 1 }, /* LTU */ | |
930 | { LTU, -32769, 32766, 1, 1, 0, 1, 1 }, /* LEU */ | |
931 | }; | |
932 | ||
933 | enum internal_test test; | |
ef4bddc2 | 934 | machine_mode mode; |
6b3d1e47 SC |
935 | struct cmp_info *p_info; |
936 | int branch_p; | |
937 | int eqne_p; | |
938 | int invert; | |
939 | rtx reg; | |
940 | rtx reg2; | |
941 | ||
942 | test = map_test_to_internal_test (test_code); | |
292c8018 | 943 | gcc_assert (test != ITEST_MAX); |
6b3d1e47 SC |
944 | |
945 | p_info = &info[(int) test]; | |
946 | eqne_p = (p_info->test_code == XOR); | |
947 | ||
948 | mode = GET_MODE (cmp0); | |
949 | if (mode == VOIDmode) | |
950 | mode = GET_MODE (cmp1); | |
951 | ||
b5144086 | 952 | /* Eliminate simple branches. */ |
6b3d1e47 SC |
953 | branch_p = (result == 0); |
954 | if (branch_p) | |
955 | { | |
956 | if (GET_CODE (cmp0) == REG || GET_CODE (cmp0) == SUBREG) | |
957 | { | |
b5144086 | 958 | /* Comparisons against zero are simple branches. */ |
6b3d1e47 SC |
959 | if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) |
960 | return 0; | |
961 | ||
962 | /* Test for beq/bne. */ | |
963 | if (eqne_p) | |
964 | return 0; | |
965 | } | |
966 | ||
b5144086 | 967 | /* Allocate a pseudo to calculate the value in. */ |
6b3d1e47 SC |
968 | result = gen_reg_rtx (mode); |
969 | } | |
970 | ||
971 | /* Make sure we can handle any constants given to us. */ | |
972 | if (GET_CODE (cmp0) == CONST_INT) | |
973 | cmp0 = force_reg (mode, cmp0); | |
974 | ||
975 | if (GET_CODE (cmp1) == CONST_INT) | |
976 | { | |
977 | HOST_WIDE_INT value = INTVAL (cmp1); | |
978 | ||
979 | if (value < p_info->const_low | |
980 | || value > p_info->const_high) | |
981 | cmp1 = force_reg (mode, cmp1); | |
982 | } | |
983 | ||
984 | /* See if we need to invert the result. */ | |
985 | invert = (GET_CODE (cmp1) == CONST_INT | |
986 | ? p_info->invert_const : p_info->invert_reg); | |
987 | ||
988 | if (p_invert != (int *)0) | |
989 | { | |
990 | *p_invert = invert; | |
991 | invert = 0; | |
992 | } | |
993 | ||
994 | /* Comparison to constants, may involve adding 1 to change a LT into LE. | |
995 | Comparison between two registers, may involve switching operands. */ | |
996 | if (GET_CODE (cmp1) == CONST_INT) | |
997 | { | |
998 | if (p_info->const_add != 0) | |
999 | { | |
0a2aaacc | 1000 | HOST_WIDE_INT new_const = INTVAL (cmp1) + p_info->const_add; |
6b3d1e47 SC |
1001 | |
1002 | /* If modification of cmp1 caused overflow, | |
1003 | we would get the wrong answer if we follow the usual path; | |
1004 | thus, x > 0xffffffffU would turn into x > 0U. */ | |
1005 | if ((p_info->unsignedp | |
0a2aaacc | 1006 | ? (unsigned HOST_WIDE_INT) new_const > |
6b3d1e47 | 1007 | (unsigned HOST_WIDE_INT) INTVAL (cmp1) |
0a2aaacc | 1008 | : new_const > INTVAL (cmp1)) |
6b3d1e47 SC |
1009 | != (p_info->const_add > 0)) |
1010 | { | |
1011 | /* This test is always true, but if INVERT is true then | |
1012 | the result of the test needs to be inverted so 0 should | |
1013 | be returned instead. */ | |
1014 | emit_move_insn (result, invert ? const0_rtx : const_true_rtx); | |
1015 | return result; | |
1016 | } | |
1017 | else | |
0a2aaacc | 1018 | cmp1 = GEN_INT (new_const); |
6b3d1e47 SC |
1019 | } |
1020 | } | |
1021 | ||
1022 | else if (p_info->reverse_regs) | |
1023 | { | |
1024 | rtx temp = cmp0; | |
1025 | cmp0 = cmp1; | |
1026 | cmp1 = temp; | |
1027 | } | |
1028 | ||
1029 | if (test == ITEST_NE && GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) | |
1030 | reg = cmp0; | |
1031 | else | |
1032 | { | |
1033 | reg = (invert || eqne_p) ? gen_reg_rtx (mode) : result; | |
1c563bed | 1034 | convert_move (reg, gen_rtx_fmt_ee (p_info->test_code, mode, cmp0, cmp1), 0); |
6b3d1e47 SC |
1035 | } |
1036 | ||
1037 | if (test == ITEST_NE) | |
1038 | { | |
f1c25d3b | 1039 | convert_move (result, gen_rtx_GTU (mode, reg, const0_rtx), 0); |
6b3d1e47 SC |
1040 | if (p_invert != NULL) |
1041 | *p_invert = 0; | |
1042 | invert = 0; | |
1043 | } | |
1044 | ||
1045 | else if (test == ITEST_EQ) | |
1046 | { | |
1047 | reg2 = invert ? gen_reg_rtx (mode) : result; | |
1048 | convert_move (reg2, gen_rtx_LTU (mode, reg, const1_rtx), 0); | |
1049 | reg = reg2; | |
1050 | } | |
1051 | ||
1052 | if (invert) | |
1053 | { | |
1054 | rtx one; | |
1055 | ||
1056 | one = const1_rtx; | |
f1c25d3b | 1057 | convert_move (result, gen_rtx_XOR (mode, reg, one), 0); |
6b3d1e47 SC |
1058 | } |
1059 | ||
1060 | return result; | |
1061 | } | |
1062 | \f | |
1063 | /* Emit the common code for doing conditional branches. | |
1064 | operand[0] is the label to jump to. | |
1065 | The comparison operands are saved away by cmp{si,di,sf,df}. */ | |
1066 | ||
1067 | void | |
ef4bddc2 | 1068 | gen_conditional_branch (rtx operands[], machine_mode mode) |
6b3d1e47 | 1069 | { |
f90b7a5a PB |
1070 | enum rtx_code test_code = GET_CODE (operands[0]); |
1071 | rtx cmp0 = operands[1]; | |
1072 | rtx cmp1 = operands[2]; | |
6b3d1e47 SC |
1073 | rtx reg; |
1074 | int invert; | |
1075 | rtx label1, label2; | |
1076 | ||
f90b7a5a PB |
1077 | invert = 0; |
1078 | reg = gen_int_relational (test_code, NULL_RTX, cmp0, cmp1, &invert); | |
6b3d1e47 | 1079 | |
f90b7a5a PB |
1080 | if (reg) |
1081 | { | |
6b3d1e47 SC |
1082 | cmp0 = reg; |
1083 | cmp1 = const0_rtx; | |
f90b7a5a | 1084 | test_code = NE; |
6b3d1e47 | 1085 | } |
f90b7a5a PB |
1086 | else if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) != 0) |
1087 | /* We don't want to build a comparison against a nonzero | |
1088 | constant. */ | |
1089 | cmp1 = force_reg (mode, cmp1); | |
6b3d1e47 SC |
1090 | |
1091 | /* Generate the branch. */ | |
f90b7a5a | 1092 | label1 = gen_rtx_LABEL_REF (VOIDmode, operands[3]); |
6b3d1e47 SC |
1093 | label2 = pc_rtx; |
1094 | ||
1095 | if (invert) | |
1096 | { | |
1097 | label2 = label1; | |
1098 | label1 = pc_rtx; | |
1099 | } | |
1100 | ||
f7df4a84 | 1101 | emit_jump_insn (gen_rtx_SET (pc_rtx, |
6b3d1e47 | 1102 | gen_rtx_IF_THEN_ELSE (VOIDmode, |
0f4c242b | 1103 | gen_rtx_fmt_ee (test_code, |
335db8e6 | 1104 | VOIDmode, |
0f4c242b | 1105 | cmp0, cmp1), |
6b3d1e47 SC |
1106 | label1, label2))); |
1107 | } | |
1108 | \f | |
b5144086 | 1109 | /* Initialize CUM for a function FNTYPE. */ |
6b3d1e47 SC |
1110 | |
1111 | void | |
b7849684 JE |
1112 | init_cumulative_args (CUMULATIVE_ARGS *cum, tree fntype, |
1113 | rtx libname ATTRIBUTE_UNUSED) | |
6b3d1e47 SC |
1114 | { |
1115 | static CUMULATIVE_ARGS zero_cum; | |
b5144086 SC |
1116 | tree param; |
1117 | tree next_param; | |
6b3d1e47 SC |
1118 | |
1119 | if (TARGET_DEBUG_D_MODE) | |
1120 | { | |
1121 | fprintf (stderr, | |
b5144086 | 1122 | "\ninit_cumulative_args, fntype = 0x%.8lx", (long) fntype); |
6b3d1e47 SC |
1123 | |
1124 | if (!fntype) | |
1125 | fputc ('\n', stderr); | |
1126 | ||
1127 | else | |
1128 | { | |
1129 | tree ret_type = TREE_TYPE (fntype); | |
b5144086 | 1130 | |
6b3d1e47 | 1131 | fprintf (stderr, ", fntype code = %s, ret code = %s\n", |
5806f481 PM |
1132 | get_tree_code_name (TREE_CODE (fntype)), |
1133 | get_tree_code_name (TREE_CODE (ret_type))); | |
6b3d1e47 SC |
1134 | } |
1135 | } | |
1136 | ||
1137 | *cum = zero_cum; | |
1138 | ||
1139 | /* Determine if this function has variable arguments. This is | |
1140 | indicated by the last argument being 'void_type_mode' if there | |
1141 | are no variable arguments. The standard IQ2000 calling sequence | |
1142 | passes all arguments in the general purpose registers in this case. */ | |
1143 | ||
1144 | for (param = fntype ? TYPE_ARG_TYPES (fntype) : 0; | |
1145 | param != 0; param = next_param) | |
1146 | { | |
1147 | next_param = TREE_CHAIN (param); | |
1148 | if (next_param == 0 && TREE_VALUE (param) != void_type_node) | |
1149 | cum->gp_reg_found = 1; | |
1150 | } | |
1151 | } | |
1152 | ||
b5144086 SC |
1153 | /* Advance the argument of type TYPE and mode MODE to the next argument |
1154 | position in CUM. */ | |
6b3d1e47 | 1155 | |
24ef86d7 | 1156 | static void |
ef4bddc2 | 1157 | iq2000_function_arg_advance (cumulative_args_t cum_v, machine_mode mode, |
24ef86d7 | 1158 | const_tree type, bool named) |
6b3d1e47 | 1159 | { |
d5cc9181 JR |
1160 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1161 | ||
6b3d1e47 SC |
1162 | if (TARGET_DEBUG_D_MODE) |
1163 | { | |
1164 | fprintf (stderr, | |
1165 | "function_adv({gp reg found = %d, arg # = %2d, words = %2d}, %4s, ", | |
1166 | cum->gp_reg_found, cum->arg_number, cum->arg_words, | |
1167 | GET_MODE_NAME (mode)); | |
2dc34a12 | 1168 | fprintf (stderr, "%p", (const void *) type); |
6b3d1e47 SC |
1169 | fprintf (stderr, ", %d )\n\n", named); |
1170 | } | |
1171 | ||
1172 | cum->arg_number++; | |
1173 | switch (mode) | |
1174 | { | |
4e10a5a7 | 1175 | case E_VOIDmode: |
6b3d1e47 SC |
1176 | break; |
1177 | ||
1178 | default: | |
292c8018 NS |
1179 | gcc_assert (GET_MODE_CLASS (mode) == MODE_COMPLEX_INT |
1180 | || GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT); | |
6b3d1e47 SC |
1181 | |
1182 | cum->gp_reg_found = 1; | |
1183 | cum->arg_words += ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) | |
1184 | / UNITS_PER_WORD); | |
1185 | break; | |
1186 | ||
4e10a5a7 | 1187 | case E_BLKmode: |
6b3d1e47 SC |
1188 | cum->gp_reg_found = 1; |
1189 | cum->arg_words += ((int_size_in_bytes (type) + UNITS_PER_WORD - 1) | |
1190 | / UNITS_PER_WORD); | |
1191 | break; | |
1192 | ||
4e10a5a7 | 1193 | case E_SFmode: |
b5144086 | 1194 | cum->arg_words ++; |
6b3d1e47 SC |
1195 | if (! cum->gp_reg_found && cum->arg_number <= 2) |
1196 | cum->fp_code += 1 << ((cum->arg_number - 1) * 2); | |
1197 | break; | |
1198 | ||
4e10a5a7 | 1199 | case E_DFmode: |
6b3d1e47 SC |
1200 | cum->arg_words += 2; |
1201 | if (! cum->gp_reg_found && cum->arg_number <= 2) | |
1202 | cum->fp_code += 2 << ((cum->arg_number - 1) * 2); | |
1203 | break; | |
1204 | ||
4e10a5a7 | 1205 | case E_DImode: |
6b3d1e47 SC |
1206 | cum->gp_reg_found = 1; |
1207 | cum->arg_words += 2; | |
1208 | break; | |
1209 | ||
4e10a5a7 | 1210 | case E_TImode: |
ac4fc08a NC |
1211 | cum->gp_reg_found = 1; |
1212 | cum->arg_words += 4; | |
1213 | break; | |
1214 | ||
4e10a5a7 RS |
1215 | case E_QImode: |
1216 | case E_HImode: | |
1217 | case E_SImode: | |
6b3d1e47 | 1218 | cum->gp_reg_found = 1; |
b5144086 | 1219 | cum->arg_words ++; |
6b3d1e47 SC |
1220 | break; |
1221 | } | |
1222 | } | |
1223 | ||
b5144086 SC |
1224 | /* Return an RTL expression containing the register for the given mode MODE |
1225 | and type TYPE in CUM, or 0 if the argument is to be passed on the stack. */ | |
6b3d1e47 | 1226 | |
24ef86d7 | 1227 | static rtx |
ef4bddc2 | 1228 | iq2000_function_arg (cumulative_args_t cum_v, machine_mode mode, |
24ef86d7 | 1229 | const_tree type, bool named) |
6b3d1e47 | 1230 | { |
d5cc9181 | 1231 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
6b3d1e47 SC |
1232 | rtx ret; |
1233 | int regbase = -1; | |
1234 | int bias = 0; | |
1235 | unsigned int *arg_words = &cum->arg_words; | |
1236 | int struct_p = (type != 0 | |
1237 | && (TREE_CODE (type) == RECORD_TYPE | |
1238 | || TREE_CODE (type) == UNION_TYPE | |
1239 | || TREE_CODE (type) == QUAL_UNION_TYPE)); | |
1240 | ||
1241 | if (TARGET_DEBUG_D_MODE) | |
1242 | { | |
1243 | fprintf (stderr, | |
1244 | "function_arg( {gp reg found = %d, arg # = %2d, words = %2d}, %4s, ", | |
1245 | cum->gp_reg_found, cum->arg_number, cum->arg_words, | |
1246 | GET_MODE_NAME (mode)); | |
586de218 | 1247 | fprintf (stderr, "%p", (const void *) type); |
6b3d1e47 SC |
1248 | fprintf (stderr, ", %d ) = ", named); |
1249 | } | |
1250 | ||
1251 | ||
1252 | cum->last_arg_fp = 0; | |
1253 | switch (mode) | |
1254 | { | |
4e10a5a7 | 1255 | case E_SFmode: |
6b3d1e47 SC |
1256 | regbase = GP_ARG_FIRST; |
1257 | break; | |
1258 | ||
4e10a5a7 | 1259 | case E_DFmode: |
6b3d1e47 SC |
1260 | cum->arg_words += cum->arg_words & 1; |
1261 | ||
1262 | regbase = GP_ARG_FIRST; | |
1263 | break; | |
1264 | ||
1265 | default: | |
292c8018 NS |
1266 | gcc_assert (GET_MODE_CLASS (mode) == MODE_COMPLEX_INT |
1267 | || GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT); | |
6b3d1e47 | 1268 | |
4b592619 | 1269 | /* FALLTHRU */ |
4e10a5a7 | 1270 | case E_BLKmode: |
6b3d1e47 SC |
1271 | if (type != NULL_TREE && TYPE_ALIGN (type) > (unsigned) BITS_PER_WORD) |
1272 | cum->arg_words += (cum->arg_words & 1); | |
1273 | regbase = GP_ARG_FIRST; | |
1274 | break; | |
1275 | ||
4e10a5a7 RS |
1276 | case E_VOIDmode: |
1277 | case E_QImode: | |
1278 | case E_HImode: | |
1279 | case E_SImode: | |
6b3d1e47 SC |
1280 | regbase = GP_ARG_FIRST; |
1281 | break; | |
1282 | ||
4e10a5a7 | 1283 | case E_DImode: |
6b3d1e47 SC |
1284 | cum->arg_words += (cum->arg_words & 1); |
1285 | regbase = GP_ARG_FIRST; | |
ac4fc08a NC |
1286 | break; |
1287 | ||
4e10a5a7 | 1288 | case E_TImode: |
ac4fc08a NC |
1289 | cum->arg_words += (cum->arg_words & 3); |
1290 | regbase = GP_ARG_FIRST; | |
1291 | break; | |
6b3d1e47 SC |
1292 | } |
1293 | ||
1294 | if (*arg_words >= (unsigned) MAX_ARGS_IN_REGISTERS) | |
1295 | { | |
1296 | if (TARGET_DEBUG_D_MODE) | |
1297 | fprintf (stderr, "<stack>%s\n", struct_p ? ", [struct]" : ""); | |
1298 | ||
1299 | ret = 0; | |
1300 | } | |
1301 | else | |
1302 | { | |
292c8018 | 1303 | gcc_assert (regbase != -1); |
6b3d1e47 SC |
1304 | |
1305 | if (! type || TREE_CODE (type) != RECORD_TYPE | |
1306 | || ! named || ! TYPE_SIZE_UNIT (type) | |
cc269bb6 | 1307 | || ! tree_fits_uhwi_p (TYPE_SIZE_UNIT (type))) |
6b3d1e47 SC |
1308 | ret = gen_rtx_REG (mode, regbase + *arg_words + bias); |
1309 | else | |
1310 | { | |
1311 | tree field; | |
1312 | ||
910ad8de | 1313 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
6b3d1e47 SC |
1314 | if (TREE_CODE (field) == FIELD_DECL |
1315 | && TREE_CODE (TREE_TYPE (field)) == REAL_TYPE | |
1316 | && TYPE_PRECISION (TREE_TYPE (field)) == BITS_PER_WORD | |
9541ffee | 1317 | && tree_fits_shwi_p (bit_position (field)) |
6b3d1e47 SC |
1318 | && int_bit_position (field) % BITS_PER_WORD == 0) |
1319 | break; | |
1320 | ||
1321 | /* If the whole struct fits a DFmode register, | |
1322 | we don't need the PARALLEL. */ | |
1323 | if (! field || mode == DFmode) | |
1324 | ret = gen_rtx_REG (mode, regbase + *arg_words + bias); | |
1325 | else | |
1326 | { | |
1327 | unsigned int chunks; | |
1328 | HOST_WIDE_INT bitpos; | |
1329 | unsigned int regno; | |
1330 | unsigned int i; | |
1331 | ||
1332 | /* ??? If this is a packed structure, then the last hunk won't | |
1333 | be 64 bits. */ | |
6b3d1e47 | 1334 | chunks |
ae7e9ddd | 1335 | = tree_to_uhwi (TYPE_SIZE_UNIT (type)) / UNITS_PER_WORD; |
6b3d1e47 SC |
1336 | if (chunks + *arg_words + bias > (unsigned) MAX_ARGS_IN_REGISTERS) |
1337 | chunks = MAX_ARGS_IN_REGISTERS - *arg_words - bias; | |
1338 | ||
b5144086 | 1339 | /* Assign_parms checks the mode of ENTRY_PARM, so we must |
6b3d1e47 SC |
1340 | use the actual mode here. */ |
1341 | ret = gen_rtx_PARALLEL (mode, rtvec_alloc (chunks)); | |
1342 | ||
1343 | bitpos = 0; | |
1344 | regno = regbase + *arg_words + bias; | |
1345 | field = TYPE_FIELDS (type); | |
1346 | for (i = 0; i < chunks; i++) | |
1347 | { | |
1348 | rtx reg; | |
1349 | ||
910ad8de | 1350 | for (; field; field = DECL_CHAIN (field)) |
6b3d1e47 SC |
1351 | if (TREE_CODE (field) == FIELD_DECL |
1352 | && int_bit_position (field) >= bitpos) | |
1353 | break; | |
1354 | ||
1355 | if (field | |
1356 | && int_bit_position (field) == bitpos | |
1357 | && TREE_CODE (TREE_TYPE (field)) == REAL_TYPE | |
1358 | && TYPE_PRECISION (TREE_TYPE (field)) == BITS_PER_WORD) | |
1359 | reg = gen_rtx_REG (DFmode, regno++); | |
1360 | else | |
1361 | reg = gen_rtx_REG (word_mode, regno); | |
1362 | ||
1363 | XVECEXP (ret, 0, i) | |
1364 | = gen_rtx_EXPR_LIST (VOIDmode, reg, | |
1365 | GEN_INT (bitpos / BITS_PER_UNIT)); | |
1366 | ||
1367 | bitpos += 64; | |
1368 | regno++; | |
1369 | } | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | if (TARGET_DEBUG_D_MODE) | |
1374 | fprintf (stderr, "%s%s\n", reg_names[regbase + *arg_words + bias], | |
1375 | struct_p ? ", [struct]" : ""); | |
1376 | } | |
1377 | ||
1378 | /* We will be called with a mode of VOIDmode after the last argument | |
1379 | has been seen. Whatever we return will be passed to the call | |
1380 | insn. If we need any shifts for small structures, return them in | |
1381 | a PARALLEL. */ | |
1382 | if (mode == VOIDmode) | |
1383 | { | |
1384 | if (cum->num_adjusts > 0) | |
ef4bddc2 | 1385 | ret = gen_rtx_PARALLEL ((machine_mode) cum->fp_code, |
6b3d1e47 SC |
1386 | gen_rtvec_v (cum->num_adjusts, cum->adjust)); |
1387 | } | |
1388 | ||
1389 | return ret; | |
1390 | } | |
1391 | ||
76b0cbf8 RS |
1392 | /* Implement TARGET_FUNCTION_ARG_PADDING. */ |
1393 | ||
1394 | static pad_direction | |
1395 | iq2000_function_arg_padding (machine_mode mode, const_tree type) | |
1396 | { | |
1397 | return (! BYTES_BIG_ENDIAN | |
1398 | ? PAD_UPWARD | |
1399 | : ((mode == BLKmode | |
1400 | ? (type | |
1401 | && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST | |
1402 | && int_size_in_bytes (type) < (PARM_BOUNDARY / BITS_PER_UNIT)) | |
1403 | : (GET_MODE_BITSIZE (mode) < PARM_BOUNDARY | |
1404 | && GET_MODE_CLASS (mode) == MODE_INT)) | |
1405 | ? PAD_DOWNWARD : PAD_UPWARD)); | |
1406 | } | |
1407 | ||
c2ed6cf8 | 1408 | static unsigned int |
ef4bddc2 | 1409 | iq2000_function_arg_boundary (machine_mode mode, const_tree type) |
c2ed6cf8 NF |
1410 | { |
1411 | return (type != NULL_TREE | |
1412 | ? (TYPE_ALIGN (type) <= PARM_BOUNDARY | |
1413 | ? PARM_BOUNDARY | |
1414 | : TYPE_ALIGN (type)) | |
1415 | : (GET_MODE_ALIGNMENT (mode) <= PARM_BOUNDARY | |
1416 | ? PARM_BOUNDARY | |
1417 | : GET_MODE_ALIGNMENT (mode))); | |
1418 | } | |
1419 | ||
78a52f11 | 1420 | static int |
ef4bddc2 | 1421 | iq2000_arg_partial_bytes (cumulative_args_t cum_v, machine_mode mode, |
78a52f11 RH |
1422 | tree type ATTRIBUTE_UNUSED, |
1423 | bool named ATTRIBUTE_UNUSED) | |
6b3d1e47 | 1424 | { |
d5cc9181 JR |
1425 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1426 | ||
78a52f11 | 1427 | if (mode == DImode && cum->arg_words == MAX_ARGS_IN_REGISTERS - 1) |
6b3d1e47 SC |
1428 | { |
1429 | if (TARGET_DEBUG_D_MODE) | |
78a52f11 RH |
1430 | fprintf (stderr, "iq2000_arg_partial_bytes=%d\n", UNITS_PER_WORD); |
1431 | return UNITS_PER_WORD; | |
6b3d1e47 SC |
1432 | } |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | \f | |
1437 | /* Implement va_start. */ | |
1438 | ||
d7bd8aeb | 1439 | static void |
b7849684 | 1440 | iq2000_va_start (tree valist, rtx nextarg) |
6b3d1e47 SC |
1441 | { |
1442 | int int_arg_words; | |
b5144086 | 1443 | /* Find out how many non-float named formals. */ |
6b3d1e47 | 1444 | int gpr_save_area_size; |
b5144086 | 1445 | /* Note UNITS_PER_WORD is 4 bytes. */ |
38173d38 | 1446 | int_arg_words = crtl->args.info.arg_words; |
b5144086 | 1447 | |
6b3d1e47 | 1448 | if (int_arg_words < 8 ) |
b5144086 | 1449 | /* Adjust for the prologue's economy measure. */ |
6b3d1e47 SC |
1450 | gpr_save_area_size = (8 - int_arg_words) * UNITS_PER_WORD; |
1451 | else | |
1452 | gpr_save_area_size = 0; | |
1453 | ||
1454 | /* Everything is in the GPR save area, or in the overflow | |
1455 | area which is contiguous with it. */ | |
0a81f074 | 1456 | nextarg = plus_constant (Pmode, nextarg, - gpr_save_area_size); |
6b3d1e47 SC |
1457 | std_expand_builtin_va_start (valist, nextarg); |
1458 | } | |
6b3d1e47 | 1459 | \f |
b5144086 | 1460 | /* Allocate a chunk of memory for per-function machine-dependent data. */ |
6b3d1e47 | 1461 | |
b5144086 SC |
1462 | static struct machine_function * |
1463 | iq2000_init_machine_status (void) | |
6b3d1e47 | 1464 | { |
766090c2 | 1465 | return ggc_cleared_alloc<machine_function> (); |
6b3d1e47 | 1466 | } |
b5144086 | 1467 | |
6b3d1e47 SC |
1468 | /* Detect any conflicts in the switches. */ |
1469 | ||
c5387660 JM |
1470 | static void |
1471 | iq2000_option_override (void) | |
6b3d1e47 | 1472 | { |
6b3d1e47 SC |
1473 | target_flags &= ~MASK_GPOPT; |
1474 | ||
1475 | iq2000_isa = IQ2000_ISA_DEFAULT; | |
1476 | ||
1477 | /* Identify the processor type. */ | |
1478 | ||
6b3d1e47 SC |
1479 | iq2000_print_operand_punct['?'] = 1; |
1480 | iq2000_print_operand_punct['#'] = 1; | |
1481 | iq2000_print_operand_punct['&'] = 1; | |
1482 | iq2000_print_operand_punct['!'] = 1; | |
1483 | iq2000_print_operand_punct['*'] = 1; | |
1484 | iq2000_print_operand_punct['@'] = 1; | |
1485 | iq2000_print_operand_punct['.'] = 1; | |
1486 | iq2000_print_operand_punct['('] = 1; | |
1487 | iq2000_print_operand_punct[')'] = 1; | |
1488 | iq2000_print_operand_punct['['] = 1; | |
1489 | iq2000_print_operand_punct[']'] = 1; | |
1490 | iq2000_print_operand_punct['<'] = 1; | |
1491 | iq2000_print_operand_punct['>'] = 1; | |
1492 | iq2000_print_operand_punct['{'] = 1; | |
1493 | iq2000_print_operand_punct['}'] = 1; | |
1494 | iq2000_print_operand_punct['^'] = 1; | |
1495 | iq2000_print_operand_punct['$'] = 1; | |
1496 | iq2000_print_operand_punct['+'] = 1; | |
1497 | iq2000_print_operand_punct['~'] = 1; | |
1498 | ||
1499 | /* Save GPR registers in word_mode sized hunks. word_mode hasn't been | |
1500 | initialized yet, so we can't use that here. */ | |
1501 | gpr_mode = SImode; | |
1502 | ||
1503 | /* Function to allocate machine-dependent function status. */ | |
b5144086 | 1504 | init_machine_status = iq2000_init_machine_status; |
6b3d1e47 SC |
1505 | } |
1506 | \f | |
1507 | /* The arg pointer (which is eliminated) points to the virtual frame pointer, | |
1508 | while the frame pointer (which may be eliminated) points to the stack | |
1509 | pointer after the initial adjustments. */ | |
1510 | ||
1511 | HOST_WIDE_INT | |
b7849684 | 1512 | iq2000_debugger_offset (rtx addr, HOST_WIDE_INT offset) |
6b3d1e47 SC |
1513 | { |
1514 | rtx offset2 = const0_rtx; | |
b5144086 | 1515 | rtx reg = eliminate_constant_term (addr, & offset2); |
6b3d1e47 SC |
1516 | |
1517 | if (offset == 0) | |
1518 | offset = INTVAL (offset2); | |
1519 | ||
1520 | if (reg == stack_pointer_rtx || reg == frame_pointer_rtx | |
1521 | || reg == hard_frame_pointer_rtx) | |
1522 | { | |
b5144086 | 1523 | HOST_WIDE_INT frame_size = (!cfun->machine->initialized) |
6b3d1e47 | 1524 | ? compute_frame_size (get_frame_size ()) |
b5144086 | 1525 | : cfun->machine->total_size; |
6b3d1e47 SC |
1526 | |
1527 | offset = offset - frame_size; | |
1528 | } | |
1529 | ||
1530 | return offset; | |
1531 | } | |
1532 | \f | |
1533 | /* If defined, a C statement to be executed just prior to the output of | |
1534 | assembler code for INSN, to modify the extracted operands so they will be | |
1535 | output differently. | |
1536 | ||
1537 | Here the argument OPVEC is the vector containing the operands extracted | |
1538 | from INSN, and NOPERANDS is the number of elements of the vector which | |
1539 | contain meaningful data for this insn. The contents of this vector are | |
1540 | what will be used to convert the insn template into assembler code, so you | |
1541 | can change the assembler output by changing the contents of the vector. | |
1542 | ||
1543 | We use it to check if the current insn needs a nop in front of it because | |
1544 | of load delays, and also to update the delay slot statistics. */ | |
1545 | ||
1546 | void | |
6ae94a0b | 1547 | final_prescan_insn (rtx_insn *insn, rtx opvec[] ATTRIBUTE_UNUSED, |
b7849684 | 1548 | int noperands ATTRIBUTE_UNUSED) |
6b3d1e47 SC |
1549 | { |
1550 | if (dslots_number_nops > 0) | |
1551 | { | |
1552 | rtx pattern = PATTERN (insn); | |
1553 | int length = get_attr_length (insn); | |
1554 | ||
b5144086 | 1555 | /* Do we need to emit a NOP? */ |
6b3d1e47 SC |
1556 | if (length == 0 |
1557 | || (iq2000_load_reg != 0 && reg_mentioned_p (iq2000_load_reg, pattern)) | |
1558 | || (iq2000_load_reg2 != 0 && reg_mentioned_p (iq2000_load_reg2, pattern)) | |
1559 | || (iq2000_load_reg3 != 0 && reg_mentioned_p (iq2000_load_reg3, pattern)) | |
1560 | || (iq2000_load_reg4 != 0 | |
1561 | && reg_mentioned_p (iq2000_load_reg4, pattern))) | |
1562 | fputs ("\tnop\n", asm_out_file); | |
1563 | ||
1564 | else | |
b5144086 | 1565 | dslots_load_filled ++; |
6b3d1e47 SC |
1566 | |
1567 | while (--dslots_number_nops > 0) | |
1568 | fputs ("\tnop\n", asm_out_file); | |
1569 | ||
1570 | iq2000_load_reg = 0; | |
1571 | iq2000_load_reg2 = 0; | |
1572 | iq2000_load_reg3 = 0; | |
1573 | iq2000_load_reg4 = 0; | |
1574 | } | |
1575 | ||
b64925dc SB |
1576 | if ( (JUMP_P (insn) |
1577 | || CALL_P (insn) | |
6b3d1e47 SC |
1578 | || (GET_CODE (PATTERN (insn)) == RETURN)) |
1579 | && NEXT_INSN (PREV_INSN (insn)) == insn) | |
1580 | { | |
00b94487 | 1581 | rtx_insn *nop_insn = emit_insn_after (gen_nop (), insn); |
6b3d1e47 SC |
1582 | INSN_ADDRESSES_NEW (nop_insn, -1); |
1583 | } | |
1584 | ||
1585 | if (TARGET_STATS | |
b64925dc | 1586 | && (JUMP_P (insn) || CALL_P (insn))) |
b5144086 | 1587 | dslots_jump_total ++; |
6b3d1e47 SC |
1588 | } |
1589 | \f | |
1590 | /* Return the bytes needed to compute the frame pointer from the current | |
b5144086 | 1591 | stack pointer where SIZE is the # of var. bytes allocated. |
6b3d1e47 SC |
1592 | |
1593 | IQ2000 stack frames look like: | |
1594 | ||
1595 | Before call After call | |
1596 | +-----------------------+ +-----------------------+ | |
1597 | high | | | | | |
1598 | mem. | | | | | |
1599 | | caller's temps. | | caller's temps. | | |
1600 | | | | | | |
1601 | +-----------------------+ +-----------------------+ | |
1602 | | | | | | |
1603 | | arguments on stack. | | arguments on stack. | | |
1604 | | | | | | |
1605 | +-----------------------+ +-----------------------+ | |
1606 | | 4 words to save | | 4 words to save | | |
1607 | | arguments passed | | arguments passed | | |
1608 | | in registers, even | | in registers, even | | |
1609 | SP->| if not passed. | VFP->| if not passed. | | |
1610 | +-----------------------+ +-----------------------+ | |
1611 | | | | |
1612 | | fp register save | | |
1613 | | | | |
1614 | +-----------------------+ | |
1615 | | | | |
1616 | | gp register save | | |
1617 | | | | |
1618 | +-----------------------+ | |
1619 | | | | |
1620 | | local variables | | |
1621 | | | | |
1622 | +-----------------------+ | |
1623 | | | | |
1624 | | alloca allocations | | |
1625 | | | | |
1626 | +-----------------------+ | |
1627 | | | | |
1628 | | GP save for V.4 abi | | |
1629 | | | | |
1630 | +-----------------------+ | |
1631 | | | | |
1632 | | arguments on stack | | |
1633 | | | | |
1634 | +-----------------------+ | |
1635 | | 4 words to save | | |
1636 | | arguments passed | | |
1637 | | in registers, even | | |
1638 | low SP->| if not passed. | | |
b5144086 | 1639 | memory +-----------------------+ */ |
6b3d1e47 SC |
1640 | |
1641 | HOST_WIDE_INT | |
b7849684 | 1642 | compute_frame_size (HOST_WIDE_INT size) |
6b3d1e47 SC |
1643 | { |
1644 | int regno; | |
b5144086 SC |
1645 | HOST_WIDE_INT total_size; /* # bytes that the entire frame takes up. */ |
1646 | HOST_WIDE_INT var_size; /* # bytes that variables take up. */ | |
1647 | HOST_WIDE_INT args_size; /* # bytes that outgoing arguments take up. */ | |
1648 | HOST_WIDE_INT extra_size; /* # extra bytes. */ | |
1649 | HOST_WIDE_INT gp_reg_rounded; /* # bytes needed to store gp after rounding. */ | |
1650 | HOST_WIDE_INT gp_reg_size; /* # bytes needed to store gp regs. */ | |
1651 | HOST_WIDE_INT fp_reg_size; /* # bytes needed to store fp regs. */ | |
1652 | long mask; /* mask of saved gp registers. */ | |
6b3d1e47 SC |
1653 | |
1654 | gp_reg_size = 0; | |
1655 | fp_reg_size = 0; | |
1656 | mask = 0; | |
1657 | extra_size = IQ2000_STACK_ALIGN ((0)); | |
1658 | var_size = IQ2000_STACK_ALIGN (size); | |
38173d38 | 1659 | args_size = IQ2000_STACK_ALIGN (crtl->outgoing_args_size); |
6b3d1e47 SC |
1660 | |
1661 | /* If a function dynamically allocates the stack and | |
b5144086 | 1662 | has 0 for STACK_DYNAMIC_OFFSET then allocate some stack space. */ |
e3b5732b | 1663 | if (args_size == 0 && cfun->calls_alloca) |
6b3d1e47 SC |
1664 | args_size = 4 * UNITS_PER_WORD; |
1665 | ||
1666 | total_size = var_size + args_size + extra_size; | |
1667 | ||
1668 | /* Calculate space needed for gp registers. */ | |
1669 | for (regno = GP_REG_FIRST; regno <= GP_REG_LAST; regno++) | |
1670 | { | |
1671 | if (MUST_SAVE_REGISTER (regno)) | |
1672 | { | |
1673 | gp_reg_size += GET_MODE_SIZE (gpr_mode); | |
1674 | mask |= 1L << (regno - GP_REG_FIRST); | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | /* We need to restore these for the handler. */ | |
e3b5732b | 1679 | if (crtl->calls_eh_return) |
6b3d1e47 | 1680 | { |
b5144086 SC |
1681 | unsigned int i; |
1682 | ||
6b3d1e47 SC |
1683 | for (i = 0; ; ++i) |
1684 | { | |
1685 | regno = EH_RETURN_DATA_REGNO (i); | |
b5144086 | 1686 | if (regno == (int) INVALID_REGNUM) |
6b3d1e47 SC |
1687 | break; |
1688 | gp_reg_size += GET_MODE_SIZE (gpr_mode); | |
1689 | mask |= 1L << (regno - GP_REG_FIRST); | |
1690 | } | |
1691 | } | |
1692 | ||
6b3d1e47 SC |
1693 | gp_reg_rounded = IQ2000_STACK_ALIGN (gp_reg_size); |
1694 | total_size += gp_reg_rounded + IQ2000_STACK_ALIGN (fp_reg_size); | |
1695 | ||
1696 | /* The gp reg is caller saved, so there is no need for leaf routines | |
1697 | (total_size == extra_size) to save the gp reg. */ | |
1698 | if (total_size == extra_size | |
1699 | && ! profile_flag) | |
1700 | total_size = extra_size = 0; | |
1701 | ||
38173d38 | 1702 | total_size += IQ2000_STACK_ALIGN (crtl->args.pretend_args_size); |
6b3d1e47 SC |
1703 | |
1704 | /* Save other computed information. */ | |
b5144086 SC |
1705 | cfun->machine->total_size = total_size; |
1706 | cfun->machine->var_size = var_size; | |
1707 | cfun->machine->args_size = args_size; | |
1708 | cfun->machine->extra_size = extra_size; | |
1709 | cfun->machine->gp_reg_size = gp_reg_size; | |
1710 | cfun->machine->fp_reg_size = fp_reg_size; | |
1711 | cfun->machine->mask = mask; | |
1712 | cfun->machine->initialized = reload_completed; | |
1713 | cfun->machine->num_gp = gp_reg_size / UNITS_PER_WORD; | |
6b3d1e47 SC |
1714 | |
1715 | if (mask) | |
1716 | { | |
1717 | unsigned long offset; | |
1718 | ||
1719 | offset = (args_size + extra_size + var_size | |
1720 | + gp_reg_size - GET_MODE_SIZE (gpr_mode)); | |
1721 | ||
b5144086 SC |
1722 | cfun->machine->gp_sp_offset = offset; |
1723 | cfun->machine->gp_save_offset = offset - total_size; | |
6b3d1e47 SC |
1724 | } |
1725 | else | |
1726 | { | |
b5144086 SC |
1727 | cfun->machine->gp_sp_offset = 0; |
1728 | cfun->machine->gp_save_offset = 0; | |
6b3d1e47 SC |
1729 | } |
1730 | ||
b5144086 SC |
1731 | cfun->machine->fp_sp_offset = 0; |
1732 | cfun->machine->fp_save_offset = 0; | |
6b3d1e47 SC |
1733 | |
1734 | /* Ok, we're done. */ | |
1735 | return total_size; | |
1736 | } | |
1737 | \f | |
7b5cbb57 AS |
1738 | |
1739 | /* We can always eliminate to the frame pointer. We can eliminate to the | |
1740 | stack pointer unless a frame pointer is needed. */ | |
1741 | ||
1742 | bool | |
1743 | iq2000_can_eliminate (const int from, const int to) | |
1744 | { | |
1745 | return (from == RETURN_ADDRESS_POINTER_REGNUM | |
1746 | && (! leaf_function_p () | |
954c7446 | 1747 | || (to == GP_REG_FIRST + 31 && leaf_function_p ()))) |
7b5cbb57 AS |
1748 | || (from != RETURN_ADDRESS_POINTER_REGNUM |
1749 | && (to == HARD_FRAME_POINTER_REGNUM | |
1750 | || (to == STACK_POINTER_REGNUM | |
1751 | && ! frame_pointer_needed))); | |
1752 | } | |
1753 | ||
6b3d1e47 SC |
1754 | /* Implement INITIAL_ELIMINATION_OFFSET. FROM is either the frame |
1755 | pointer, argument pointer, or return address pointer. TO is either | |
1756 | the stack pointer or hard frame pointer. */ | |
1757 | ||
1758 | int | |
b7849684 | 1759 | iq2000_initial_elimination_offset (int from, int to ATTRIBUTE_UNUSED) |
6b3d1e47 SC |
1760 | { |
1761 | int offset; | |
1762 | ||
1763 | compute_frame_size (get_frame_size ()); | |
1764 | if ((from) == FRAME_POINTER_REGNUM) | |
1765 | (offset) = 0; | |
1766 | else if ((from) == ARG_POINTER_REGNUM) | |
b5144086 | 1767 | (offset) = (cfun->machine->total_size); |
6b3d1e47 | 1768 | else if ((from) == RETURN_ADDRESS_POINTER_REGNUM) |
b5144086 SC |
1769 | { |
1770 | if (leaf_function_p ()) | |
1771 | (offset) = 0; | |
1772 | else (offset) = cfun->machine->gp_sp_offset | |
1773 | + ((UNITS_PER_WORD - (POINTER_SIZE / BITS_PER_UNIT)) | |
1774 | * (BYTES_BIG_ENDIAN != 0)); | |
1775 | } | |
954c7446 JR |
1776 | else |
1777 | gcc_unreachable (); | |
6b3d1e47 SC |
1778 | |
1779 | return offset; | |
1780 | } | |
1781 | \f | |
1782 | /* Common code to emit the insns (or to write the instructions to a file) | |
1783 | to save/restore registers. | |
1784 | Other parts of the code assume that IQ2000_TEMP1_REGNUM (aka large_reg) | |
1785 | is not modified within save_restore_insns. */ | |
1786 | ||
1787 | #define BITSET_P(VALUE,BIT) (((VALUE) & (1L << (BIT))) != 0) | |
1788 | ||
1789 | /* Emit instructions to load the value (SP + OFFSET) into IQ2000_TEMP2_REGNUM | |
1790 | and return an rtl expression for the register. Write the assembly | |
1791 | instructions directly to FILE if it is not null, otherwise emit them as | |
1792 | rtl. | |
1793 | ||
1794 | This function is a subroutine of save_restore_insns. It is used when | |
1795 | OFFSET is too large to add in a single instruction. */ | |
1796 | ||
1797 | static rtx | |
b7849684 | 1798 | iq2000_add_large_offset_to_sp (HOST_WIDE_INT offset) |
6b3d1e47 SC |
1799 | { |
1800 | rtx reg = gen_rtx_REG (Pmode, IQ2000_TEMP2_REGNUM); | |
1801 | rtx offset_rtx = GEN_INT (offset); | |
1802 | ||
1803 | emit_move_insn (reg, offset_rtx); | |
1804 | emit_insn (gen_addsi3 (reg, reg, stack_pointer_rtx)); | |
1805 | return reg; | |
1806 | } | |
1807 | ||
1808 | /* Make INSN frame related and note that it performs the frame-related | |
1809 | operation DWARF_PATTERN. */ | |
1810 | ||
1811 | static void | |
6ae94a0b | 1812 | iq2000_annotate_frame_insn (rtx_insn *insn, rtx dwarf_pattern) |
6b3d1e47 SC |
1813 | { |
1814 | RTX_FRAME_RELATED_P (insn) = 1; | |
1815 | REG_NOTES (insn) = alloc_EXPR_LIST (REG_FRAME_RELATED_EXPR, | |
1816 | dwarf_pattern, | |
1817 | REG_NOTES (insn)); | |
1818 | } | |
1819 | ||
1820 | /* Emit a move instruction that stores REG in MEM. Make the instruction | |
1821 | frame related and note that it stores REG at (SP + OFFSET). */ | |
1822 | ||
1823 | static void | |
b7849684 | 1824 | iq2000_emit_frame_related_store (rtx mem, rtx reg, HOST_WIDE_INT offset) |
6b3d1e47 | 1825 | { |
0a81f074 | 1826 | rtx dwarf_address = plus_constant (Pmode, stack_pointer_rtx, offset); |
6b3d1e47 SC |
1827 | rtx dwarf_mem = gen_rtx_MEM (GET_MODE (reg), dwarf_address); |
1828 | ||
1829 | iq2000_annotate_frame_insn (emit_move_insn (mem, reg), | |
f7df4a84 | 1830 | gen_rtx_SET (dwarf_mem, reg)); |
6b3d1e47 SC |
1831 | } |
1832 | ||
b5144086 SC |
1833 | /* Emit instructions to save/restore registers, as determined by STORE_P. */ |
1834 | ||
6b3d1e47 | 1835 | static void |
b7849684 | 1836 | save_restore_insns (int store_p) |
6b3d1e47 | 1837 | { |
b5144086 | 1838 | long mask = cfun->machine->mask; |
6b3d1e47 SC |
1839 | int regno; |
1840 | rtx base_reg_rtx; | |
1841 | HOST_WIDE_INT base_offset; | |
1842 | HOST_WIDE_INT gp_offset; | |
1843 | HOST_WIDE_INT end_offset; | |
1844 | ||
292c8018 NS |
1845 | gcc_assert (!frame_pointer_needed |
1846 | || BITSET_P (mask, HARD_FRAME_POINTER_REGNUM - GP_REG_FIRST)); | |
6b3d1e47 SC |
1847 | |
1848 | if (mask == 0) | |
1849 | { | |
1850 | base_reg_rtx = 0, base_offset = 0; | |
1851 | return; | |
1852 | } | |
1853 | ||
1854 | /* Save registers starting from high to low. The debuggers prefer at least | |
1855 | the return register be stored at func+4, and also it allows us not to | |
1856 | need a nop in the epilog if at least one register is reloaded in | |
1857 | addition to return address. */ | |
1858 | ||
1859 | /* Save GP registers if needed. */ | |
1860 | /* Pick which pointer to use as a base register. For small frames, just | |
1861 | use the stack pointer. Otherwise, use a temporary register. Save 2 | |
1862 | cycles if the save area is near the end of a large frame, by reusing | |
1863 | the constant created in the prologue/epilogue to adjust the stack | |
1864 | frame. */ | |
1865 | ||
b5144086 | 1866 | gp_offset = cfun->machine->gp_sp_offset; |
6b3d1e47 | 1867 | end_offset |
b5144086 | 1868 | = gp_offset - (cfun->machine->gp_reg_size |
6b3d1e47 SC |
1869 | - GET_MODE_SIZE (gpr_mode)); |
1870 | ||
1871 | if (gp_offset < 0 || end_offset < 0) | |
1872 | internal_error | |
ab532386 | 1873 | ("gp_offset (%ld) or end_offset (%ld) is less than zero", |
6b3d1e47 SC |
1874 | (long) gp_offset, (long) end_offset); |
1875 | ||
1876 | else if (gp_offset < 32768) | |
1877 | base_reg_rtx = stack_pointer_rtx, base_offset = 0; | |
1878 | else | |
1879 | { | |
1880 | int regno; | |
1881 | int reg_save_count = 0; | |
b5144086 | 1882 | |
6b3d1e47 SC |
1883 | for (regno = GP_REG_LAST; regno >= GP_REG_FIRST; regno--) |
1884 | if (BITSET_P (mask, regno - GP_REG_FIRST)) reg_save_count += 1; | |
1885 | base_offset = gp_offset - ((reg_save_count - 1) * 4); | |
1886 | base_reg_rtx = iq2000_add_large_offset_to_sp (base_offset); | |
1887 | } | |
1888 | ||
1889 | for (regno = GP_REG_LAST; regno >= GP_REG_FIRST; regno--) | |
1890 | { | |
1891 | if (BITSET_P (mask, regno - GP_REG_FIRST)) | |
1892 | { | |
1893 | rtx reg_rtx; | |
1894 | rtx mem_rtx | |
f1c25d3b KH |
1895 | = gen_rtx_MEM (gpr_mode, |
1896 | gen_rtx_PLUS (Pmode, base_reg_rtx, | |
6b3d1e47 SC |
1897 | GEN_INT (gp_offset - base_offset))); |
1898 | ||
f1c25d3b | 1899 | reg_rtx = gen_rtx_REG (gpr_mode, regno); |
6b3d1e47 SC |
1900 | |
1901 | if (store_p) | |
1902 | iq2000_emit_frame_related_store (mem_rtx, reg_rtx, gp_offset); | |
1903 | else | |
1904 | { | |
1905 | emit_move_insn (reg_rtx, mem_rtx); | |
1906 | } | |
1907 | gp_offset -= GET_MODE_SIZE (gpr_mode); | |
1908 | } | |
1909 | } | |
1910 | } | |
1911 | \f | |
1912 | /* Expand the prologue into a bunch of separate insns. */ | |
1913 | ||
1914 | void | |
b7849684 | 1915 | iq2000_expand_prologue (void) |
6b3d1e47 SC |
1916 | { |
1917 | int regno; | |
1918 | HOST_WIDE_INT tsize; | |
1919 | int last_arg_is_vararg_marker = 0; | |
1920 | tree fndecl = current_function_decl; | |
1921 | tree fntype = TREE_TYPE (fndecl); | |
1922 | tree fnargs = DECL_ARGUMENTS (fndecl); | |
1923 | rtx next_arg_reg; | |
1924 | int i; | |
1925 | tree next_arg; | |
1926 | tree cur_arg; | |
d5cc9181 JR |
1927 | CUMULATIVE_ARGS args_so_far_v; |
1928 | cumulative_args_t args_so_far; | |
6b3d1e47 SC |
1929 | int store_args_on_stack = (iq2000_can_use_return_insn ()); |
1930 | ||
1931 | /* If struct value address is treated as the first argument. */ | |
b5144086 | 1932 | if (aggregate_value_p (DECL_RESULT (fndecl), fndecl) |
ad516a74 | 1933 | && !cfun->returns_pcc_struct |
b5144086 | 1934 | && targetm.calls.struct_value_rtx (TREE_TYPE (fndecl), 1) == 0) |
6b3d1e47 SC |
1935 | { |
1936 | tree type = build_pointer_type (fntype); | |
4c4bde29 AH |
1937 | tree function_result_decl = build_decl (BUILTINS_LOCATION, |
1938 | PARM_DECL, NULL_TREE, type); | |
6b3d1e47 SC |
1939 | |
1940 | DECL_ARG_TYPE (function_result_decl) = type; | |
910ad8de | 1941 | DECL_CHAIN (function_result_decl) = fnargs; |
6b3d1e47 SC |
1942 | fnargs = function_result_decl; |
1943 | } | |
1944 | ||
1945 | /* For arguments passed in registers, find the register number | |
1946 | of the first argument in the variable part of the argument list, | |
1947 | otherwise GP_ARG_LAST+1. Note also if the last argument is | |
1948 | the varargs special argument, and treat it as part of the | |
1949 | variable arguments. | |
1950 | ||
1951 | This is only needed if store_args_on_stack is true. */ | |
d5cc9181 JR |
1952 | INIT_CUMULATIVE_ARGS (args_so_far_v, fntype, NULL_RTX, 0, 0); |
1953 | args_so_far = pack_cumulative_args (&args_so_far_v); | |
6b3d1e47 SC |
1954 | regno = GP_ARG_FIRST; |
1955 | ||
1956 | for (cur_arg = fnargs; cur_arg != 0; cur_arg = next_arg) | |
1957 | { | |
1958 | tree passed_type = DECL_ARG_TYPE (cur_arg); | |
ef4bddc2 | 1959 | machine_mode passed_mode = TYPE_MODE (passed_type); |
6b3d1e47 SC |
1960 | rtx entry_parm; |
1961 | ||
1962 | if (TREE_ADDRESSABLE (passed_type)) | |
1963 | { | |
1964 | passed_type = build_pointer_type (passed_type); | |
1965 | passed_mode = Pmode; | |
1966 | } | |
1967 | ||
d5cc9181 | 1968 | entry_parm = iq2000_function_arg (args_so_far, passed_mode, |
24ef86d7 | 1969 | passed_type, true); |
6b3d1e47 | 1970 | |
d5cc9181 | 1971 | iq2000_function_arg_advance (args_so_far, passed_mode, |
24ef86d7 | 1972 | passed_type, true); |
910ad8de | 1973 | next_arg = DECL_CHAIN (cur_arg); |
6b3d1e47 SC |
1974 | |
1975 | if (entry_parm && store_args_on_stack) | |
1976 | { | |
1977 | if (next_arg == 0 | |
1978 | && DECL_NAME (cur_arg) | |
01512446 JJ |
1979 | && (strcmp (IDENTIFIER_POINTER (DECL_NAME (cur_arg)), |
1980 | "__builtin_va_alist") == 0 | |
1981 | || strcmp (IDENTIFIER_POINTER (DECL_NAME (cur_arg)), | |
1982 | "va_alist") == 0)) | |
6b3d1e47 SC |
1983 | { |
1984 | last_arg_is_vararg_marker = 1; | |
1985 | break; | |
1986 | } | |
1987 | else | |
1988 | { | |
1989 | int words; | |
1990 | ||
292c8018 | 1991 | gcc_assert (GET_CODE (entry_parm) == REG); |
6b3d1e47 | 1992 | |
5b8d96f1 | 1993 | /* Passed in a register, so will get homed automatically. */ |
6b3d1e47 SC |
1994 | if (GET_MODE (entry_parm) == BLKmode) |
1995 | words = (int_size_in_bytes (passed_type) + 3) / 4; | |
1996 | else | |
1997 | words = (GET_MODE_SIZE (GET_MODE (entry_parm)) + 3) / 4; | |
1998 | ||
1999 | regno = REGNO (entry_parm) + words - 1; | |
2000 | } | |
2001 | } | |
2002 | else | |
2003 | { | |
2004 | regno = GP_ARG_LAST+1; | |
2005 | break; | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | /* In order to pass small structures by value in registers we need to | |
2010 | shift the value into the high part of the register. | |
24ef86d7 NF |
2011 | iq2000_unction_arg has encoded a PARALLEL rtx, holding a vector of |
2012 | adjustments to be made as the next_arg_reg variable, so we split up | |
2013 | the insns, and emit them separately. */ | |
d5cc9181 | 2014 | next_arg_reg = iq2000_function_arg (args_so_far, VOIDmode, |
24ef86d7 | 2015 | void_type_node, true); |
6b3d1e47 SC |
2016 | if (next_arg_reg != 0 && GET_CODE (next_arg_reg) == PARALLEL) |
2017 | { | |
2018 | rtvec adjust = XVEC (next_arg_reg, 0); | |
2019 | int num = GET_NUM_ELEM (adjust); | |
2020 | ||
2021 | for (i = 0; i < num; i++) | |
2022 | { | |
954c7446 | 2023 | rtx pattern; |
6b3d1e47 SC |
2024 | |
2025 | pattern = RTVEC_ELT (adjust, i); | |
2026 | if (GET_CODE (pattern) != SET | |
2027 | || GET_CODE (SET_SRC (pattern)) != ASHIFT) | |
2028 | abort_with_insn (pattern, "Insn is not a shift"); | |
2029 | PUT_CODE (SET_SRC (pattern), ASHIFTRT); | |
2030 | ||
954c7446 | 2031 | emit_insn (pattern); |
6b3d1e47 SC |
2032 | } |
2033 | } | |
2034 | ||
2035 | tsize = compute_frame_size (get_frame_size ()); | |
2036 | ||
2037 | /* If this function is a varargs function, store any registers that | |
2038 | would normally hold arguments ($4 - $7) on the stack. */ | |
2039 | if (store_args_on_stack | |
f38958e8 | 2040 | && (stdarg_p (fntype) |
6b3d1e47 SC |
2041 | || last_arg_is_vararg_marker)) |
2042 | { | |
2043 | int offset = (regno - GP_ARG_FIRST) * UNITS_PER_WORD; | |
2044 | rtx ptr = stack_pointer_rtx; | |
2045 | ||
2046 | for (; regno <= GP_ARG_LAST; regno++) | |
2047 | { | |
2048 | if (offset != 0) | |
f1c25d3b KH |
2049 | ptr = gen_rtx_PLUS (Pmode, stack_pointer_rtx, GEN_INT (offset)); |
2050 | emit_move_insn (gen_rtx_MEM (gpr_mode, ptr), | |
2051 | gen_rtx_REG (gpr_mode, regno)); | |
6b3d1e47 SC |
2052 | |
2053 | offset += GET_MODE_SIZE (gpr_mode); | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | if (tsize > 0) | |
2058 | { | |
2059 | rtx tsize_rtx = GEN_INT (tsize); | |
6ae94a0b DM |
2060 | rtx adjustment_rtx, dwarf_pattern; |
2061 | rtx_insn *insn; | |
6b3d1e47 SC |
2062 | |
2063 | if (tsize > 32767) | |
2064 | { | |
f1c25d3b | 2065 | adjustment_rtx = gen_rtx_REG (Pmode, IQ2000_TEMP1_REGNUM); |
6b3d1e47 SC |
2066 | emit_move_insn (adjustment_rtx, tsize_rtx); |
2067 | } | |
2068 | else | |
2069 | adjustment_rtx = tsize_rtx; | |
2070 | ||
2071 | insn = emit_insn (gen_subsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
2072 | adjustment_rtx)); | |
2073 | ||
f7df4a84 | 2074 | dwarf_pattern = gen_rtx_SET (stack_pointer_rtx, |
0a81f074 RS |
2075 | plus_constant (Pmode, stack_pointer_rtx, |
2076 | -tsize)); | |
6b3d1e47 SC |
2077 | |
2078 | iq2000_annotate_frame_insn (insn, dwarf_pattern); | |
2079 | ||
2080 | save_restore_insns (1); | |
2081 | ||
2082 | if (frame_pointer_needed) | |
2083 | { | |
6ae94a0b | 2084 | rtx_insn *insn = 0; |
6b3d1e47 SC |
2085 | |
2086 | insn = emit_insn (gen_movsi (hard_frame_pointer_rtx, | |
2087 | stack_pointer_rtx)); | |
2088 | ||
2089 | if (insn) | |
2090 | RTX_FRAME_RELATED_P (insn) = 1; | |
2091 | } | |
2092 | } | |
2093 | ||
ed1332ee NC |
2094 | if (flag_stack_usage_info) |
2095 | current_function_static_stack_size = cfun->machine->total_size; | |
2096 | ||
6b3d1e47 SC |
2097 | emit_insn (gen_blockage ()); |
2098 | } | |
2099 | \f | |
2100 | /* Expand the epilogue into a bunch of separate insns. */ | |
2101 | ||
2102 | void | |
b7849684 | 2103 | iq2000_expand_epilogue (void) |
6b3d1e47 | 2104 | { |
b5144086 | 2105 | HOST_WIDE_INT tsize = cfun->machine->total_size; |
6b3d1e47 SC |
2106 | rtx tsize_rtx = GEN_INT (tsize); |
2107 | rtx tmp_rtx = (rtx)0; | |
2108 | ||
2109 | if (iq2000_can_use_return_insn ()) | |
2110 | { | |
9054261d | 2111 | emit_jump_insn (gen_return ()); |
6b3d1e47 SC |
2112 | return; |
2113 | } | |
2114 | ||
2115 | if (tsize > 32767) | |
2116 | { | |
2117 | tmp_rtx = gen_rtx_REG (Pmode, IQ2000_TEMP1_REGNUM); | |
2118 | emit_move_insn (tmp_rtx, tsize_rtx); | |
2119 | tsize_rtx = tmp_rtx; | |
2120 | } | |
2121 | ||
2122 | if (tsize > 0) | |
2123 | { | |
2124 | if (frame_pointer_needed) | |
2125 | { | |
2126 | emit_insn (gen_blockage ()); | |
2127 | ||
2128 | emit_insn (gen_movsi (stack_pointer_rtx, hard_frame_pointer_rtx)); | |
2129 | } | |
2130 | ||
2131 | save_restore_insns (0); | |
2132 | ||
e3b5732b | 2133 | if (crtl->calls_eh_return) |
6b3d1e47 SC |
2134 | { |
2135 | rtx eh_ofs = EH_RETURN_STACKADJ_RTX; | |
2136 | emit_insn (gen_addsi3 (eh_ofs, eh_ofs, tsize_rtx)); | |
2137 | tsize_rtx = eh_ofs; | |
2138 | } | |
2139 | ||
2140 | emit_insn (gen_blockage ()); | |
2141 | ||
e3b5732b | 2142 | if (tsize != 0 || crtl->calls_eh_return) |
6b3d1e47 SC |
2143 | { |
2144 | emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
2145 | tsize_rtx)); | |
2146 | } | |
2147 | } | |
2148 | ||
e3b5732b | 2149 | if (crtl->calls_eh_return) |
6b3d1e47 SC |
2150 | { |
2151 | /* Perform the additional bump for __throw. */ | |
f1c25d3b | 2152 | emit_move_insn (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM), |
6b3d1e47 | 2153 | stack_pointer_rtx); |
c41c1387 | 2154 | emit_use (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM)); |
6b3d1e47 SC |
2155 | emit_jump_insn (gen_eh_return_internal ()); |
2156 | } | |
2157 | else | |
f1c25d3b | 2158 | emit_jump_insn (gen_return_internal (gen_rtx_REG (Pmode, |
6b3d1e47 SC |
2159 | GP_REG_FIRST + 31))); |
2160 | } | |
2161 | ||
2162 | void | |
b7849684 | 2163 | iq2000_expand_eh_return (rtx address) |
6b3d1e47 | 2164 | { |
b5144086 | 2165 | HOST_WIDE_INT gp_offset = cfun->machine->gp_sp_offset; |
6b3d1e47 SC |
2166 | rtx scratch; |
2167 | ||
0a81f074 | 2168 | scratch = plus_constant (Pmode, stack_pointer_rtx, gp_offset); |
6b3d1e47 SC |
2169 | emit_move_insn (gen_rtx_MEM (GET_MODE (address), scratch), address); |
2170 | } | |
2171 | \f | |
2172 | /* Return nonzero if this function is known to have a null epilogue. | |
2173 | This allows the optimizer to omit jumps to jumps if no stack | |
2174 | was created. */ | |
2175 | ||
2176 | int | |
b7849684 | 2177 | iq2000_can_use_return_insn (void) |
6b3d1e47 SC |
2178 | { |
2179 | if (! reload_completed) | |
2180 | return 0; | |
2181 | ||
6fb5fa3c | 2182 | if (df_regs_ever_live_p (31) || profile_flag) |
6b3d1e47 SC |
2183 | return 0; |
2184 | ||
b5144086 SC |
2185 | if (cfun->machine->initialized) |
2186 | return cfun->machine->total_size == 0; | |
6b3d1e47 SC |
2187 | |
2188 | return compute_frame_size (get_frame_size ()) == 0; | |
2189 | } | |
2190 | \f | |
6b3d1e47 SC |
2191 | /* Choose the section to use for the constant rtx expression X that has |
2192 | mode MODE. */ | |
2193 | ||
d6b5193b | 2194 | static section * |
ef4bddc2 | 2195 | iq2000_select_rtx_section (machine_mode mode, rtx x ATTRIBUTE_UNUSED, |
b7849684 | 2196 | unsigned HOST_WIDE_INT align) |
6b3d1e47 SC |
2197 | { |
2198 | /* For embedded applications, always put constants in read-only data, | |
2199 | in order to reduce RAM usage. */ | |
d6b5193b | 2200 | return mergeable_constant_section (mode, align, 0); |
6b3d1e47 SC |
2201 | } |
2202 | ||
2203 | /* Choose the section to use for DECL. RELOC is true if its value contains | |
2204 | any relocatable expression. | |
2205 | ||
2206 | Some of the logic used here needs to be replicated in | |
2207 | ENCODE_SECTION_INFO in iq2000.h so that references to these symbols | |
2208 | are done correctly. */ | |
2209 | ||
d6b5193b | 2210 | static section * |
b7849684 JE |
2211 | iq2000_select_section (tree decl, int reloc ATTRIBUTE_UNUSED, |
2212 | unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED) | |
6b3d1e47 SC |
2213 | { |
2214 | if (TARGET_EMBEDDED_DATA) | |
2215 | { | |
2216 | /* For embedded applications, always put an object in read-only data | |
2217 | if possible, in order to reduce RAM usage. */ | |
3521b33c ZW |
2218 | if ((TREE_CODE (decl) == VAR_DECL |
2219 | && TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl) | |
2220 | && DECL_INITIAL (decl) | |
2221 | && (DECL_INITIAL (decl) == error_mark_node | |
2222 | || TREE_CONSTANT (DECL_INITIAL (decl)))) | |
2223 | /* Deal with calls from output_constant_def_contents. */ | |
2224 | || TREE_CODE (decl) != VAR_DECL) | |
d6b5193b | 2225 | return readonly_data_section; |
6b3d1e47 | 2226 | else |
d6b5193b | 2227 | return data_section; |
6b3d1e47 SC |
2228 | } |
2229 | else | |
2230 | { | |
2231 | /* For hosted applications, always put an object in small data if | |
2232 | possible, as this gives the best performance. */ | |
3521b33c ZW |
2233 | if ((TREE_CODE (decl) == VAR_DECL |
2234 | && TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl) | |
2235 | && DECL_INITIAL (decl) | |
2236 | && (DECL_INITIAL (decl) == error_mark_node | |
2237 | || TREE_CONSTANT (DECL_INITIAL (decl)))) | |
2238 | /* Deal with calls from output_constant_def_contents. */ | |
2239 | || TREE_CODE (decl) != VAR_DECL) | |
d6b5193b | 2240 | return readonly_data_section; |
6b3d1e47 | 2241 | else |
d6b5193b | 2242 | return data_section; |
6b3d1e47 SC |
2243 | } |
2244 | } | |
2245 | /* Return register to use for a function return value with VALTYPE for function | |
2246 | FUNC. */ | |
2247 | ||
7ae62237 AS |
2248 | static rtx |
2249 | iq2000_function_value (const_tree valtype, | |
2250 | const_tree fn_decl_or_type, | |
2251 | bool outgoing ATTRIBUTE_UNUSED) | |
6b3d1e47 SC |
2252 | { |
2253 | int reg = GP_RETURN; | |
ef4bddc2 | 2254 | machine_mode mode = TYPE_MODE (valtype); |
8df83eae | 2255 | int unsignedp = TYPE_UNSIGNED (valtype); |
954c7446 | 2256 | const_tree func = fn_decl_or_type; |
7ae62237 AS |
2257 | |
2258 | if (fn_decl_or_type | |
2259 | && !DECL_P (fn_decl_or_type)) | |
2260 | fn_decl_or_type = NULL; | |
6b3d1e47 | 2261 | |
cde0f3fd PB |
2262 | /* Since we promote return types, we must promote the mode here too. */ |
2263 | mode = promote_function_mode (valtype, mode, &unsignedp, func, 1); | |
6b3d1e47 SC |
2264 | |
2265 | return gen_rtx_REG (mode, reg); | |
2266 | } | |
7ae62237 AS |
2267 | |
2268 | /* Worker function for TARGET_LIBCALL_VALUE. */ | |
2269 | ||
2270 | static rtx | |
ef4bddc2 | 2271 | iq2000_libcall_value (machine_mode mode, const_rtx fun ATTRIBUTE_UNUSED) |
7ae62237 AS |
2272 | { |
2273 | return gen_rtx_REG (((GET_MODE_CLASS (mode) != MODE_INT | |
2274 | || GET_MODE_SIZE (mode) >= 4) | |
2275 | ? mode : SImode), | |
2276 | GP_RETURN); | |
2277 | } | |
2278 | ||
2279 | /* Worker function for FUNCTION_VALUE_REGNO_P. | |
2280 | ||
2281 | On the IQ2000, R2 and R3 are the only register thus used. */ | |
2282 | ||
2283 | bool | |
2284 | iq2000_function_value_regno_p (const unsigned int regno) | |
2285 | { | |
2286 | return (regno == GP_RETURN); | |
2287 | } | |
2288 | ||
6b3d1e47 | 2289 | \f |
8cd5a4e0 | 2290 | /* Return true when an argument must be passed by reference. */ |
6b3d1e47 | 2291 | |
8cd5a4e0 | 2292 | static bool |
ef4bddc2 | 2293 | iq2000_pass_by_reference (cumulative_args_t cum_v, machine_mode mode, |
586de218 | 2294 | const_tree type, bool named ATTRIBUTE_UNUSED) |
6b3d1e47 | 2295 | { |
d5cc9181 | 2296 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
6b3d1e47 SC |
2297 | int size; |
2298 | ||
2299 | /* We must pass by reference if we would be both passing in registers | |
2300 | and the stack. This is because any subsequent partial arg would be | |
2301 | handled incorrectly in this case. */ | |
fe984136 | 2302 | if (cum && targetm.calls.must_pass_in_stack (mode, type)) |
6b3d1e47 SC |
2303 | { |
2304 | /* Don't pass the actual CUM to FUNCTION_ARG, because we would | |
2305 | get double copies of any offsets generated for small structs | |
2306 | passed in registers. */ | |
2307 | CUMULATIVE_ARGS temp; | |
b5144086 | 2308 | |
6b3d1e47 | 2309 | temp = *cum; |
d5cc9181 JR |
2310 | if (iq2000_function_arg (pack_cumulative_args (&temp), mode, type, named) |
2311 | != 0) | |
6b3d1e47 SC |
2312 | return 1; |
2313 | } | |
2314 | ||
2315 | if (type == NULL_TREE || mode == DImode || mode == DFmode) | |
2316 | return 0; | |
2317 | ||
2318 | size = int_size_in_bytes (type); | |
2319 | return size == -1 || size > UNITS_PER_WORD; | |
2320 | } | |
2321 | ||
2322 | /* Return the length of INSN. LENGTH is the initial length computed by | |
2323 | attributes in the machine-description file. */ | |
2324 | ||
2325 | int | |
6ae94a0b | 2326 | iq2000_adjust_insn_length (rtx_insn *insn, int length) |
6b3d1e47 SC |
2327 | { |
2328 | /* A unconditional jump has an unfilled delay slot if it is not part | |
b5144086 | 2329 | of a sequence. A conditional jump normally has a delay slot. */ |
6b3d1e47 | 2330 | if (simplejump_p (insn) |
b64925dc SB |
2331 | || ( (JUMP_P (insn) |
2332 | || CALL_P (insn)))) | |
6b3d1e47 SC |
2333 | length += 4; |
2334 | ||
2335 | return length; | |
2336 | } | |
2337 | ||
2338 | /* Output assembly instructions to perform a conditional branch. | |
2339 | ||
2340 | INSN is the branch instruction. OPERANDS[0] is the condition. | |
2341 | OPERANDS[1] is the target of the branch. OPERANDS[2] is the target | |
2342 | of the first operand to the condition. If TWO_OPERANDS_P is | |
4375e090 | 2343 | nonzero the comparison takes two operands; OPERANDS[3] will be the |
6b3d1e47 SC |
2344 | second operand. |
2345 | ||
4375e090 KH |
2346 | If INVERTED_P is nonzero we are to branch if the condition does |
2347 | not hold. If FLOAT_P is nonzero this is a floating-point comparison. | |
6b3d1e47 SC |
2348 | |
2349 | LENGTH is the length (in bytes) of the sequence we are to generate. | |
2350 | That tells us whether to generate a simple conditional branch, or a | |
2351 | reversed conditional branch around a `jr' instruction. */ | |
2352 | ||
2353 | char * | |
6ae94a0b DM |
2354 | iq2000_output_conditional_branch (rtx_insn *insn, rtx * operands, |
2355 | int two_operands_p, int float_p, | |
2356 | int inverted_p, int length) | |
6b3d1e47 SC |
2357 | { |
2358 | static char buffer[200]; | |
2359 | /* The kind of comparison we are doing. */ | |
2360 | enum rtx_code code = GET_CODE (operands[0]); | |
5b8d96f1 | 2361 | /* Nonzero if the opcode for the comparison needs a `z' indicating |
2cac216b | 2362 | that it is a comparison against zero. */ |
6b3d1e47 SC |
2363 | int need_z_p; |
2364 | /* A string to use in the assembly output to represent the first | |
2365 | operand. */ | |
2366 | const char *op1 = "%z2"; | |
2367 | /* A string to use in the assembly output to represent the second | |
2368 | operand. Use the hard-wired zero register if there's no second | |
2369 | operand. */ | |
2370 | const char *op2 = (two_operands_p ? ",%z3" : ",%."); | |
2371 | /* The operand-printing string for the comparison. */ | |
2372 | const char *comp = (float_p ? "%F0" : "%C0"); | |
2373 | /* The operand-printing string for the inverted comparison. */ | |
2374 | const char *inverted_comp = (float_p ? "%W0" : "%N0"); | |
2375 | ||
b5144086 | 2376 | /* Likely variants of each branch instruction annul the instruction |
6b3d1e47 SC |
2377 | in the delay slot if the branch is not taken. */ |
2378 | iq2000_branch_likely = (final_sequence && INSN_ANNULLED_BRANCH_P (insn)); | |
2379 | ||
2380 | if (!two_operands_p) | |
2381 | { | |
2382 | /* To compute whether than A > B, for example, we normally | |
2383 | subtract B from A and then look at the sign bit. But, if we | |
2384 | are doing an unsigned comparison, and B is zero, we don't | |
2385 | have to do the subtraction. Instead, we can just check to | |
4375e090 | 2386 | see if A is nonzero. Thus, we change the CODE here to |
6b3d1e47 SC |
2387 | reflect the simpler comparison operation. */ |
2388 | switch (code) | |
2389 | { | |
2390 | case GTU: | |
2391 | code = NE; | |
2392 | break; | |
2393 | ||
2394 | case LEU: | |
2395 | code = EQ; | |
2396 | break; | |
2397 | ||
2398 | case GEU: | |
2399 | /* A condition which will always be true. */ | |
2400 | code = EQ; | |
2401 | op1 = "%."; | |
2402 | break; | |
2403 | ||
2404 | case LTU: | |
2405 | /* A condition which will always be false. */ | |
2406 | code = NE; | |
2407 | op1 = "%."; | |
2408 | break; | |
2409 | ||
2410 | default: | |
2411 | /* Not a special case. */ | |
2412 | break; | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | /* Relative comparisons are always done against zero. But | |
2417 | equality comparisons are done between two operands, and therefore | |
2418 | do not require a `z' in the assembly language output. */ | |
2419 | need_z_p = (!float_p && code != EQ && code != NE); | |
2420 | /* For comparisons against zero, the zero is not provided | |
2421 | explicitly. */ | |
2422 | if (need_z_p) | |
2423 | op2 = ""; | |
2424 | ||
2425 | /* Begin by terminating the buffer. That way we can always use | |
2426 | strcat to add to it. */ | |
2427 | buffer[0] = '\0'; | |
2428 | ||
2429 | switch (length) | |
2430 | { | |
2431 | case 4: | |
2432 | case 8: | |
2433 | /* Just a simple conditional branch. */ | |
2434 | if (float_p) | |
2435 | sprintf (buffer, "b%s%%?\t%%Z2%%1", | |
2436 | inverted_p ? inverted_comp : comp); | |
2437 | else | |
2438 | sprintf (buffer, "b%s%s%%?\t%s%s,%%1", | |
2439 | inverted_p ? inverted_comp : comp, | |
2440 | need_z_p ? "z" : "", | |
2441 | op1, | |
2442 | op2); | |
2443 | return buffer; | |
2444 | ||
2445 | case 12: | |
2446 | case 16: | |
2447 | { | |
2448 | /* Generate a reversed conditional branch around ` j' | |
2449 | instruction: | |
2450 | ||
2451 | .set noreorder | |
2452 | .set nomacro | |
2453 | bc l | |
2454 | nop | |
2455 | j target | |
2456 | .set macro | |
2457 | .set reorder | |
2458 | l: | |
2459 | ||
2460 | Because we have to jump four bytes *past* the following | |
2461 | instruction if this branch was annulled, we can't just use | |
2462 | a label, as in the picture above; there's no way to put the | |
2463 | label after the next instruction, as the assembler does not | |
2464 | accept `.L+4' as the target of a branch. (We can't just | |
2465 | wait until the next instruction is output; it might be a | |
2466 | macro and take up more than four bytes. Once again, we see | |
2467 | why we want to eliminate macros.) | |
2468 | ||
2469 | If the branch is annulled, we jump four more bytes that we | |
2470 | would otherwise; that way we skip the annulled instruction | |
2471 | in the delay slot. */ | |
2472 | ||
2473 | const char *target | |
2474 | = ((iq2000_branch_likely || length == 16) ? ".+16" : ".+12"); | |
2475 | char *c; | |
2476 | ||
2477 | c = strchr (buffer, '\0'); | |
59b9a953 | 2478 | /* Generate the reversed comparison. This takes four |
6b3d1e47 SC |
2479 | bytes. */ |
2480 | if (float_p) | |
2481 | sprintf (c, "b%s\t%%Z2%s", | |
2482 | inverted_p ? comp : inverted_comp, | |
2483 | target); | |
2484 | else | |
2485 | sprintf (c, "b%s%s\t%s%s,%s", | |
2486 | inverted_p ? comp : inverted_comp, | |
2487 | need_z_p ? "z" : "", | |
2488 | op1, | |
2489 | op2, | |
2490 | target); | |
2491 | strcat (c, "\n\tnop\n\tj\t%1"); | |
2492 | if (length == 16) | |
2493 | /* The delay slot was unfilled. Since we're inside | |
2494 | .noreorder, the assembler will not fill in the NOP for | |
2495 | us, so we must do it ourselves. */ | |
2496 | strcat (buffer, "\n\tnop"); | |
2497 | return buffer; | |
2498 | } | |
2499 | ||
2500 | default: | |
292c8018 | 2501 | gcc_unreachable (); |
6b3d1e47 SC |
2502 | } |
2503 | ||
2504 | /* NOTREACHED */ | |
2505 | return 0; | |
2506 | } | |
2507 | ||
6e34d3a3 | 2508 | #define def_builtin(NAME, TYPE, CODE) \ |
c79efc4d RÁE |
2509 | add_builtin_function ((NAME), (TYPE), (CODE), BUILT_IN_MD, \ |
2510 | NULL, NULL_TREE) | |
6b3d1e47 | 2511 | |
b5144086 | 2512 | static void |
b7849684 | 2513 | iq2000_init_builtins (void) |
6b3d1e47 | 2514 | { |
6b3d1e47 SC |
2515 | tree void_ftype, void_ftype_int, void_ftype_int_int; |
2516 | tree void_ftype_int_int_int; | |
2517 | tree int_ftype_int, int_ftype_int_int, int_ftype_int_int_int; | |
2518 | tree int_ftype_int_int_int_int; | |
2519 | ||
2520 | /* func () */ | |
2521 | void_ftype | |
baeec5f2 | 2522 | = build_function_type_list (void_type_node, NULL_TREE); |
6b3d1e47 SC |
2523 | |
2524 | /* func (int) */ | |
2525 | void_ftype_int | |
baeec5f2 | 2526 | = build_function_type_list (void_type_node, integer_type_node, NULL_TREE); |
6b3d1e47 SC |
2527 | |
2528 | /* void func (int, int) */ | |
2529 | void_ftype_int_int | |
baeec5f2 NF |
2530 | = build_function_type_list (void_type_node, |
2531 | integer_type_node, | |
2532 | integer_type_node, | |
2533 | NULL_TREE); | |
6b3d1e47 SC |
2534 | |
2535 | /* int func (int) */ | |
2536 | int_ftype_int | |
baeec5f2 NF |
2537 | = build_function_type_list (integer_type_node, |
2538 | integer_type_node, NULL_TREE); | |
6b3d1e47 SC |
2539 | |
2540 | /* int func (int, int) */ | |
2541 | int_ftype_int_int | |
baeec5f2 NF |
2542 | = build_function_type_list (integer_type_node, |
2543 | integer_type_node, | |
2544 | integer_type_node, | |
2545 | NULL_TREE); | |
6b3d1e47 SC |
2546 | |
2547 | /* void func (int, int, int) */ | |
baeec5f2 NF |
2548 | void_ftype_int_int_int |
2549 | = build_function_type_list (void_type_node, | |
2550 | integer_type_node, | |
2551 | integer_type_node, | |
2552 | integer_type_node, | |
2553 | NULL_TREE); | |
6b3d1e47 SC |
2554 | |
2555 | /* int func (int, int, int) */ | |
2556 | int_ftype_int_int_int | |
baeec5f2 NF |
2557 | = build_function_type_list (integer_type_node, |
2558 | integer_type_node, | |
2559 | integer_type_node, | |
2560 | integer_type_node, | |
2561 | NULL_TREE); | |
6b3d1e47 SC |
2562 | |
2563 | /* int func (int, int, int, int) */ | |
2564 | int_ftype_int_int_int_int | |
baeec5f2 NF |
2565 | = build_function_type_list (integer_type_node, |
2566 | integer_type_node, | |
2567 | integer_type_node, | |
2568 | integer_type_node, | |
2569 | integer_type_node, | |
2570 | NULL_TREE); | |
6b3d1e47 SC |
2571 | |
2572 | def_builtin ("__builtin_ado16", int_ftype_int_int, IQ2000_BUILTIN_ADO16); | |
2573 | def_builtin ("__builtin_ram", int_ftype_int_int_int_int, IQ2000_BUILTIN_RAM); | |
2574 | def_builtin ("__builtin_chkhdr", void_ftype_int_int, IQ2000_BUILTIN_CHKHDR); | |
2575 | def_builtin ("__builtin_pkrl", void_ftype_int_int, IQ2000_BUILTIN_PKRL); | |
2576 | def_builtin ("__builtin_cfc0", int_ftype_int, IQ2000_BUILTIN_CFC0); | |
2577 | def_builtin ("__builtin_cfc1", int_ftype_int, IQ2000_BUILTIN_CFC1); | |
2578 | def_builtin ("__builtin_cfc2", int_ftype_int, IQ2000_BUILTIN_CFC2); | |
2579 | def_builtin ("__builtin_cfc3", int_ftype_int, IQ2000_BUILTIN_CFC3); | |
2580 | def_builtin ("__builtin_ctc0", void_ftype_int_int, IQ2000_BUILTIN_CTC0); | |
2581 | def_builtin ("__builtin_ctc1", void_ftype_int_int, IQ2000_BUILTIN_CTC1); | |
2582 | def_builtin ("__builtin_ctc2", void_ftype_int_int, IQ2000_BUILTIN_CTC2); | |
2583 | def_builtin ("__builtin_ctc3", void_ftype_int_int, IQ2000_BUILTIN_CTC3); | |
2584 | def_builtin ("__builtin_mfc0", int_ftype_int, IQ2000_BUILTIN_MFC0); | |
2585 | def_builtin ("__builtin_mfc1", int_ftype_int, IQ2000_BUILTIN_MFC1); | |
2586 | def_builtin ("__builtin_mfc2", int_ftype_int, IQ2000_BUILTIN_MFC2); | |
2587 | def_builtin ("__builtin_mfc3", int_ftype_int, IQ2000_BUILTIN_MFC3); | |
2588 | def_builtin ("__builtin_mtc0", void_ftype_int_int, IQ2000_BUILTIN_MTC0); | |
2589 | def_builtin ("__builtin_mtc1", void_ftype_int_int, IQ2000_BUILTIN_MTC1); | |
2590 | def_builtin ("__builtin_mtc2", void_ftype_int_int, IQ2000_BUILTIN_MTC2); | |
2591 | def_builtin ("__builtin_mtc3", void_ftype_int_int, IQ2000_BUILTIN_MTC3); | |
2592 | def_builtin ("__builtin_lur", void_ftype_int_int, IQ2000_BUILTIN_LUR); | |
2593 | def_builtin ("__builtin_rb", void_ftype_int_int, IQ2000_BUILTIN_RB); | |
2594 | def_builtin ("__builtin_rx", void_ftype_int_int, IQ2000_BUILTIN_RX); | |
2595 | def_builtin ("__builtin_srrd", void_ftype_int, IQ2000_BUILTIN_SRRD); | |
2596 | def_builtin ("__builtin_srwr", void_ftype_int_int, IQ2000_BUILTIN_SRWR); | |
2597 | def_builtin ("__builtin_wb", void_ftype_int_int, IQ2000_BUILTIN_WB); | |
2598 | def_builtin ("__builtin_wx", void_ftype_int_int, IQ2000_BUILTIN_WX); | |
2599 | def_builtin ("__builtin_luc32l", void_ftype_int_int, IQ2000_BUILTIN_LUC32L); | |
2600 | def_builtin ("__builtin_luc64", void_ftype_int_int, IQ2000_BUILTIN_LUC64); | |
2601 | def_builtin ("__builtin_luc64l", void_ftype_int_int, IQ2000_BUILTIN_LUC64L); | |
2602 | def_builtin ("__builtin_luk", void_ftype_int_int, IQ2000_BUILTIN_LUK); | |
2603 | def_builtin ("__builtin_lulck", void_ftype_int, IQ2000_BUILTIN_LULCK); | |
2604 | def_builtin ("__builtin_lum32", void_ftype_int_int, IQ2000_BUILTIN_LUM32); | |
2605 | def_builtin ("__builtin_lum32l", void_ftype_int_int, IQ2000_BUILTIN_LUM32L); | |
2606 | def_builtin ("__builtin_lum64", void_ftype_int_int, IQ2000_BUILTIN_LUM64); | |
2607 | def_builtin ("__builtin_lum64l", void_ftype_int_int, IQ2000_BUILTIN_LUM64L); | |
2608 | def_builtin ("__builtin_lurl", void_ftype_int_int, IQ2000_BUILTIN_LURL); | |
2609 | def_builtin ("__builtin_mrgb", int_ftype_int_int_int, IQ2000_BUILTIN_MRGB); | |
2610 | def_builtin ("__builtin_srrdl", void_ftype_int, IQ2000_BUILTIN_SRRDL); | |
2611 | def_builtin ("__builtin_srulck", void_ftype_int, IQ2000_BUILTIN_SRULCK); | |
2612 | def_builtin ("__builtin_srwru", void_ftype_int_int, IQ2000_BUILTIN_SRWRU); | |
2613 | def_builtin ("__builtin_trapqfl", void_ftype, IQ2000_BUILTIN_TRAPQFL); | |
2614 | def_builtin ("__builtin_trapqne", void_ftype, IQ2000_BUILTIN_TRAPQNE); | |
2615 | def_builtin ("__builtin_traprel", void_ftype_int, IQ2000_BUILTIN_TRAPREL); | |
2616 | def_builtin ("__builtin_wbu", void_ftype_int_int_int, IQ2000_BUILTIN_WBU); | |
2617 | def_builtin ("__builtin_syscall", void_ftype, IQ2000_BUILTIN_SYSCALL); | |
2618 | } | |
2619 | ||
5039610b | 2620 | /* Builtin for ICODE having ARGCOUNT args in EXP where each arg |
b5144086 | 2621 | has an rtx CODE. */ |
6b3d1e47 SC |
2622 | |
2623 | static rtx | |
5039610b | 2624 | expand_one_builtin (enum insn_code icode, rtx target, tree exp, |
b7849684 | 2625 | enum rtx_code *code, int argcount) |
6b3d1e47 SC |
2626 | { |
2627 | rtx pat; | |
2628 | tree arg [5]; | |
2629 | rtx op [5]; | |
ef4bddc2 | 2630 | machine_mode mode [5]; |
6b3d1e47 SC |
2631 | int i; |
2632 | ||
2633 | mode[0] = insn_data[icode].operand[0].mode; | |
2634 | for (i = 0; i < argcount; i++) | |
2635 | { | |
5039610b | 2636 | arg[i] = CALL_EXPR_ARG (exp, i); |
954c7446 | 2637 | op[i] = expand_normal (arg[i]); |
6b3d1e47 SC |
2638 | mode[i] = insn_data[icode].operand[i].mode; |
2639 | if (code[i] == CONST_INT && GET_CODE (op[i]) != CONST_INT) | |
9e637a26 | 2640 | error ("argument %qd is not a constant", i + 1); |
6b3d1e47 SC |
2641 | if (code[i] == REG |
2642 | && ! (*insn_data[icode].operand[i].predicate) (op[i], mode[i])) | |
2643 | op[i] = copy_to_mode_reg (mode[i], op[i]); | |
2644 | } | |
2645 | ||
2646 | if (insn_data[icode].operand[0].constraint[0] == '=') | |
2647 | { | |
2648 | if (target == 0 | |
2649 | || GET_MODE (target) != mode[0] | |
2650 | || ! (*insn_data[icode].operand[0].predicate) (target, mode[0])) | |
2651 | target = gen_reg_rtx (mode[0]); | |
2652 | } | |
2653 | else | |
2654 | target = 0; | |
2655 | ||
2656 | switch (argcount) | |
2657 | { | |
2658 | case 0: | |
2659 | pat = GEN_FCN (icode) (target); | |
4b592619 | 2660 | break; |
6b3d1e47 SC |
2661 | case 1: |
2662 | if (target) | |
2663 | pat = GEN_FCN (icode) (target, op[0]); | |
2664 | else | |
2665 | pat = GEN_FCN (icode) (op[0]); | |
2666 | break; | |
2667 | case 2: | |
2668 | if (target) | |
2669 | pat = GEN_FCN (icode) (target, op[0], op[1]); | |
2670 | else | |
2671 | pat = GEN_FCN (icode) (op[0], op[1]); | |
2672 | break; | |
2673 | case 3: | |
2674 | if (target) | |
2675 | pat = GEN_FCN (icode) (target, op[0], op[1], op[2]); | |
2676 | else | |
2677 | pat = GEN_FCN (icode) (op[0], op[1], op[2]); | |
2678 | break; | |
2679 | case 4: | |
2680 | if (target) | |
2681 | pat = GEN_FCN (icode) (target, op[0], op[1], op[2], op[3]); | |
2682 | else | |
2683 | pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3]); | |
2684 | break; | |
2685 | default: | |
292c8018 | 2686 | gcc_unreachable (); |
6b3d1e47 SC |
2687 | } |
2688 | ||
2689 | if (! pat) | |
2690 | return 0; | |
2691 | emit_insn (pat); | |
2692 | return target; | |
2693 | } | |
2694 | ||
2695 | /* Expand an expression EXP that calls a built-in function, | |
2696 | with result going to TARGET if that's convenient | |
2697 | (and in mode MODE if that's convenient). | |
2698 | SUBTARGET may be used as the target for computing one of EXP's operands. | |
2699 | IGNORE is nonzero if the value is to be ignored. */ | |
2700 | ||
b5144086 | 2701 | static rtx |
b7849684 | 2702 | iq2000_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED, |
ef4bddc2 | 2703 | machine_mode mode ATTRIBUTE_UNUSED, |
b7849684 | 2704 | int ignore ATTRIBUTE_UNUSED) |
6b3d1e47 | 2705 | { |
5039610b | 2706 | tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0); |
6b3d1e47 SC |
2707 | int fcode = DECL_FUNCTION_CODE (fndecl); |
2708 | enum rtx_code code [5]; | |
2709 | ||
2710 | code[0] = REG; | |
2711 | code[1] = REG; | |
2712 | code[2] = REG; | |
2713 | code[3] = REG; | |
2714 | code[4] = REG; | |
2715 | switch (fcode) | |
2716 | { | |
2717 | default: | |
2718 | break; | |
2719 | ||
2720 | case IQ2000_BUILTIN_ADO16: | |
5039610b | 2721 | return expand_one_builtin (CODE_FOR_ado16, target, exp, code, 2); |
6b3d1e47 SC |
2722 | |
2723 | case IQ2000_BUILTIN_RAM: | |
2724 | code[1] = CONST_INT; | |
2725 | code[2] = CONST_INT; | |
2726 | code[3] = CONST_INT; | |
5039610b | 2727 | return expand_one_builtin (CODE_FOR_ram, target, exp, code, 4); |
6b3d1e47 SC |
2728 | |
2729 | case IQ2000_BUILTIN_CHKHDR: | |
5039610b | 2730 | return expand_one_builtin (CODE_FOR_chkhdr, target, exp, code, 2); |
6b3d1e47 SC |
2731 | |
2732 | case IQ2000_BUILTIN_PKRL: | |
5039610b | 2733 | return expand_one_builtin (CODE_FOR_pkrl, target, exp, code, 2); |
6b3d1e47 SC |
2734 | |
2735 | case IQ2000_BUILTIN_CFC0: | |
2736 | code[0] = CONST_INT; | |
5039610b | 2737 | return expand_one_builtin (CODE_FOR_cfc0, target, exp, code, 1); |
6b3d1e47 SC |
2738 | |
2739 | case IQ2000_BUILTIN_CFC1: | |
2740 | code[0] = CONST_INT; | |
5039610b | 2741 | return expand_one_builtin (CODE_FOR_cfc1, target, exp, code, 1); |
6b3d1e47 SC |
2742 | |
2743 | case IQ2000_BUILTIN_CFC2: | |
2744 | code[0] = CONST_INT; | |
5039610b | 2745 | return expand_one_builtin (CODE_FOR_cfc2, target, exp, code, 1); |
6b3d1e47 SC |
2746 | |
2747 | case IQ2000_BUILTIN_CFC3: | |
2748 | code[0] = CONST_INT; | |
5039610b | 2749 | return expand_one_builtin (CODE_FOR_cfc3, target, exp, code, 1); |
6b3d1e47 SC |
2750 | |
2751 | case IQ2000_BUILTIN_CTC0: | |
2752 | code[1] = CONST_INT; | |
5039610b | 2753 | return expand_one_builtin (CODE_FOR_ctc0, target, exp, code, 2); |
6b3d1e47 SC |
2754 | |
2755 | case IQ2000_BUILTIN_CTC1: | |
2756 | code[1] = CONST_INT; | |
5039610b | 2757 | return expand_one_builtin (CODE_FOR_ctc1, target, exp, code, 2); |
6b3d1e47 SC |
2758 | |
2759 | case IQ2000_BUILTIN_CTC2: | |
2760 | code[1] = CONST_INT; | |
5039610b | 2761 | return expand_one_builtin (CODE_FOR_ctc2, target, exp, code, 2); |
6b3d1e47 SC |
2762 | |
2763 | case IQ2000_BUILTIN_CTC3: | |
2764 | code[1] = CONST_INT; | |
5039610b | 2765 | return expand_one_builtin (CODE_FOR_ctc3, target, exp, code, 2); |
6b3d1e47 SC |
2766 | |
2767 | case IQ2000_BUILTIN_MFC0: | |
2768 | code[0] = CONST_INT; | |
5039610b | 2769 | return expand_one_builtin (CODE_FOR_mfc0, target, exp, code, 1); |
6b3d1e47 SC |
2770 | |
2771 | case IQ2000_BUILTIN_MFC1: | |
2772 | code[0] = CONST_INT; | |
5039610b | 2773 | return expand_one_builtin (CODE_FOR_mfc1, target, exp, code, 1); |
6b3d1e47 SC |
2774 | |
2775 | case IQ2000_BUILTIN_MFC2: | |
2776 | code[0] = CONST_INT; | |
5039610b | 2777 | return expand_one_builtin (CODE_FOR_mfc2, target, exp, code, 1); |
6b3d1e47 SC |
2778 | |
2779 | case IQ2000_BUILTIN_MFC3: | |
2780 | code[0] = CONST_INT; | |
5039610b | 2781 | return expand_one_builtin (CODE_FOR_mfc3, target, exp, code, 1); |
6b3d1e47 SC |
2782 | |
2783 | case IQ2000_BUILTIN_MTC0: | |
2784 | code[1] = CONST_INT; | |
5039610b | 2785 | return expand_one_builtin (CODE_FOR_mtc0, target, exp, code, 2); |
6b3d1e47 SC |
2786 | |
2787 | case IQ2000_BUILTIN_MTC1: | |
2788 | code[1] = CONST_INT; | |
5039610b | 2789 | return expand_one_builtin (CODE_FOR_mtc1, target, exp, code, 2); |
6b3d1e47 SC |
2790 | |
2791 | case IQ2000_BUILTIN_MTC2: | |
2792 | code[1] = CONST_INT; | |
5039610b | 2793 | return expand_one_builtin (CODE_FOR_mtc2, target, exp, code, 2); |
6b3d1e47 SC |
2794 | |
2795 | case IQ2000_BUILTIN_MTC3: | |
2796 | code[1] = CONST_INT; | |
5039610b | 2797 | return expand_one_builtin (CODE_FOR_mtc3, target, exp, code, 2); |
6b3d1e47 SC |
2798 | |
2799 | case IQ2000_BUILTIN_LUR: | |
5039610b | 2800 | return expand_one_builtin (CODE_FOR_lur, target, exp, code, 2); |
6b3d1e47 SC |
2801 | |
2802 | case IQ2000_BUILTIN_RB: | |
5039610b | 2803 | return expand_one_builtin (CODE_FOR_rb, target, exp, code, 2); |
6b3d1e47 SC |
2804 | |
2805 | case IQ2000_BUILTIN_RX: | |
5039610b | 2806 | return expand_one_builtin (CODE_FOR_rx, target, exp, code, 2); |
6b3d1e47 SC |
2807 | |
2808 | case IQ2000_BUILTIN_SRRD: | |
5039610b | 2809 | return expand_one_builtin (CODE_FOR_srrd, target, exp, code, 1); |
6b3d1e47 SC |
2810 | |
2811 | case IQ2000_BUILTIN_SRWR: | |
5039610b | 2812 | return expand_one_builtin (CODE_FOR_srwr, target, exp, code, 2); |
6b3d1e47 SC |
2813 | |
2814 | case IQ2000_BUILTIN_WB: | |
5039610b | 2815 | return expand_one_builtin (CODE_FOR_wb, target, exp, code, 2); |
6b3d1e47 SC |
2816 | |
2817 | case IQ2000_BUILTIN_WX: | |
5039610b | 2818 | return expand_one_builtin (CODE_FOR_wx, target, exp, code, 2); |
6b3d1e47 SC |
2819 | |
2820 | case IQ2000_BUILTIN_LUC32L: | |
5039610b | 2821 | return expand_one_builtin (CODE_FOR_luc32l, target, exp, code, 2); |
6b3d1e47 SC |
2822 | |
2823 | case IQ2000_BUILTIN_LUC64: | |
5039610b | 2824 | return expand_one_builtin (CODE_FOR_luc64, target, exp, code, 2); |
6b3d1e47 SC |
2825 | |
2826 | case IQ2000_BUILTIN_LUC64L: | |
5039610b | 2827 | return expand_one_builtin (CODE_FOR_luc64l, target, exp, code, 2); |
6b3d1e47 SC |
2828 | |
2829 | case IQ2000_BUILTIN_LUK: | |
5039610b | 2830 | return expand_one_builtin (CODE_FOR_luk, target, exp, code, 2); |
6b3d1e47 SC |
2831 | |
2832 | case IQ2000_BUILTIN_LULCK: | |
5039610b | 2833 | return expand_one_builtin (CODE_FOR_lulck, target, exp, code, 1); |
6b3d1e47 SC |
2834 | |
2835 | case IQ2000_BUILTIN_LUM32: | |
5039610b | 2836 | return expand_one_builtin (CODE_FOR_lum32, target, exp, code, 2); |
6b3d1e47 SC |
2837 | |
2838 | case IQ2000_BUILTIN_LUM32L: | |
5039610b | 2839 | return expand_one_builtin (CODE_FOR_lum32l, target, exp, code, 2); |
6b3d1e47 SC |
2840 | |
2841 | case IQ2000_BUILTIN_LUM64: | |
5039610b | 2842 | return expand_one_builtin (CODE_FOR_lum64, target, exp, code, 2); |
6b3d1e47 SC |
2843 | |
2844 | case IQ2000_BUILTIN_LUM64L: | |
5039610b | 2845 | return expand_one_builtin (CODE_FOR_lum64l, target, exp, code, 2); |
6b3d1e47 SC |
2846 | |
2847 | case IQ2000_BUILTIN_LURL: | |
5039610b | 2848 | return expand_one_builtin (CODE_FOR_lurl, target, exp, code, 2); |
6b3d1e47 SC |
2849 | |
2850 | case IQ2000_BUILTIN_MRGB: | |
2851 | code[2] = CONST_INT; | |
5039610b | 2852 | return expand_one_builtin (CODE_FOR_mrgb, target, exp, code, 3); |
6b3d1e47 SC |
2853 | |
2854 | case IQ2000_BUILTIN_SRRDL: | |
5039610b | 2855 | return expand_one_builtin (CODE_FOR_srrdl, target, exp, code, 1); |
6b3d1e47 SC |
2856 | |
2857 | case IQ2000_BUILTIN_SRULCK: | |
5039610b | 2858 | return expand_one_builtin (CODE_FOR_srulck, target, exp, code, 1); |
6b3d1e47 SC |
2859 | |
2860 | case IQ2000_BUILTIN_SRWRU: | |
5039610b | 2861 | return expand_one_builtin (CODE_FOR_srwru, target, exp, code, 2); |
6b3d1e47 SC |
2862 | |
2863 | case IQ2000_BUILTIN_TRAPQFL: | |
5039610b | 2864 | return expand_one_builtin (CODE_FOR_trapqfl, target, exp, code, 0); |
6b3d1e47 SC |
2865 | |
2866 | case IQ2000_BUILTIN_TRAPQNE: | |
5039610b | 2867 | return expand_one_builtin (CODE_FOR_trapqne, target, exp, code, 0); |
6b3d1e47 SC |
2868 | |
2869 | case IQ2000_BUILTIN_TRAPREL: | |
5039610b | 2870 | return expand_one_builtin (CODE_FOR_traprel, target, exp, code, 1); |
6b3d1e47 SC |
2871 | |
2872 | case IQ2000_BUILTIN_WBU: | |
5039610b | 2873 | return expand_one_builtin (CODE_FOR_wbu, target, exp, code, 3); |
6b3d1e47 SC |
2874 | |
2875 | case IQ2000_BUILTIN_SYSCALL: | |
5039610b | 2876 | return expand_one_builtin (CODE_FOR_syscall, target, exp, code, 0); |
6b3d1e47 SC |
2877 | } |
2878 | ||
2879 | return NULL_RTX; | |
2880 | } | |
2881 | \f | |
bd5bd7ac KH |
2882 | /* Worker function for TARGET_RETURN_IN_MEMORY. */ |
2883 | ||
69a45040 | 2884 | static bool |
586de218 | 2885 | iq2000_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED) |
69a45040 KH |
2886 | { |
2887 | return ((int_size_in_bytes (type) > (2 * UNITS_PER_WORD)) | |
2888 | || (int_size_in_bytes (type) == -1)); | |
2889 | } | |
2890 | ||
bd5bd7ac KH |
2891 | /* Worker function for TARGET_SETUP_INCOMING_VARARGS. */ |
2892 | ||
69a45040 | 2893 | static void |
d5cc9181 | 2894 | iq2000_setup_incoming_varargs (cumulative_args_t cum_v, |
ef4bddc2 | 2895 | machine_mode mode ATTRIBUTE_UNUSED, |
b5144086 SC |
2896 | tree type ATTRIBUTE_UNUSED, int * pretend_size, |
2897 | int no_rtl) | |
6b3d1e47 | 2898 | { |
d5cc9181 | 2899 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
69a45040 KH |
2900 | unsigned int iq2000_off = ! cum->last_arg_fp; |
2901 | unsigned int iq2000_fp_off = cum->last_arg_fp; | |
b5144086 | 2902 | |
69a45040 | 2903 | if ((cum->arg_words < MAX_ARGS_IN_REGISTERS - iq2000_off)) |
6b3d1e47 SC |
2904 | { |
2905 | int iq2000_save_gp_regs | |
69a45040 | 2906 | = MAX_ARGS_IN_REGISTERS - cum->arg_words - iq2000_off; |
6b3d1e47 | 2907 | int iq2000_save_fp_regs |
69a45040 | 2908 | = (MAX_ARGS_IN_REGISTERS - cum->fp_arg_words - iq2000_fp_off); |
6b3d1e47 SC |
2909 | |
2910 | if (iq2000_save_gp_regs < 0) | |
2911 | iq2000_save_gp_regs = 0; | |
2912 | if (iq2000_save_fp_regs < 0) | |
2913 | iq2000_save_fp_regs = 0; | |
2914 | ||
2915 | *pretend_size = ((iq2000_save_gp_regs * UNITS_PER_WORD) | |
2916 | + (iq2000_save_fp_regs * UNITS_PER_FPREG)); | |
2917 | ||
2918 | if (! (no_rtl)) | |
2919 | { | |
69a45040 | 2920 | if (cum->arg_words < MAX_ARGS_IN_REGISTERS - iq2000_off) |
6b3d1e47 SC |
2921 | { |
2922 | rtx ptr, mem; | |
0a81f074 RS |
2923 | ptr = plus_constant (Pmode, virtual_incoming_args_rtx, |
2924 | - (iq2000_save_gp_regs | |
2925 | * UNITS_PER_WORD)); | |
6b3d1e47 SC |
2926 | mem = gen_rtx_MEM (BLKmode, ptr); |
2927 | move_block_from_reg | |
69a45040 | 2928 | (cum->arg_words + GP_ARG_FIRST + iq2000_off, |
6b3d1e47 SC |
2929 | mem, |
2930 | iq2000_save_gp_regs); | |
2931 | } | |
2932 | } | |
2933 | } | |
2934 | } | |
2935 | \f | |
2936 | /* A C compound statement to output to stdio stream STREAM the | |
2937 | assembler syntax for an instruction operand that is a memory | |
b5144086 | 2938 | reference whose address is ADDR. ADDR is an RTL expression. */ |
6b3d1e47 | 2939 | |
bf7c1408 | 2940 | static void |
cc8ca59e | 2941 | iq2000_print_operand_address (FILE * file, machine_mode mode, rtx addr) |
6b3d1e47 SC |
2942 | { |
2943 | if (!addr) | |
2944 | error ("PRINT_OPERAND_ADDRESS, null pointer"); | |
2945 | ||
2946 | else | |
2947 | switch (GET_CODE (addr)) | |
2948 | { | |
2949 | case REG: | |
2950 | if (REGNO (addr) == ARG_POINTER_REGNUM) | |
2951 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
2952 | ||
2953 | fprintf (file, "0(%s)", reg_names [REGNO (addr)]); | |
2954 | break; | |
2955 | ||
2956 | case LO_SUM: | |
2957 | { | |
b5144086 SC |
2958 | rtx arg0 = XEXP (addr, 0); |
2959 | rtx arg1 = XEXP (addr, 1); | |
6b3d1e47 SC |
2960 | |
2961 | if (GET_CODE (arg0) != REG) | |
2962 | abort_with_insn (addr, | |
2963 | "PRINT_OPERAND_ADDRESS, LO_SUM with #1 not REG."); | |
2964 | ||
2965 | fprintf (file, "%%lo("); | |
cc8ca59e | 2966 | iq2000_print_operand_address (file, mode, arg1); |
6b3d1e47 SC |
2967 | fprintf (file, ")(%s)", reg_names [REGNO (arg0)]); |
2968 | } | |
2969 | break; | |
2970 | ||
2971 | case PLUS: | |
2972 | { | |
b5144086 SC |
2973 | rtx reg = 0; |
2974 | rtx offset = 0; | |
2975 | rtx arg0 = XEXP (addr, 0); | |
2976 | rtx arg1 = XEXP (addr, 1); | |
6b3d1e47 SC |
2977 | |
2978 | if (GET_CODE (arg0) == REG) | |
2979 | { | |
2980 | reg = arg0; | |
2981 | offset = arg1; | |
2982 | if (GET_CODE (offset) == REG) | |
2983 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, 2 regs"); | |
2984 | } | |
2985 | ||
2986 | else if (GET_CODE (arg1) == REG) | |
2987 | reg = arg1, offset = arg0; | |
2988 | else if (CONSTANT_P (arg0) && CONSTANT_P (arg1)) | |
2989 | { | |
2990 | output_addr_const (file, addr); | |
2991 | break; | |
2992 | } | |
2993 | else | |
2994 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, no regs"); | |
2995 | ||
2996 | if (! CONSTANT_P (offset)) | |
2997 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, invalid insn #2"); | |
2998 | ||
2999 | if (REGNO (reg) == ARG_POINTER_REGNUM) | |
3000 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
3001 | ||
3002 | output_addr_const (file, offset); | |
3003 | fprintf (file, "(%s)", reg_names [REGNO (reg)]); | |
3004 | } | |
3005 | break; | |
3006 | ||
3007 | case LABEL_REF: | |
3008 | case SYMBOL_REF: | |
3009 | case CONST_INT: | |
3010 | case CONST: | |
3011 | output_addr_const (file, addr); | |
3012 | if (GET_CODE (addr) == CONST_INT) | |
3013 | fprintf (file, "(%s)", reg_names [0]); | |
3014 | break; | |
3015 | ||
3016 | default: | |
3017 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, invalid insn #1"); | |
3018 | break; | |
3019 | } | |
3020 | } | |
3021 | \f | |
b5144086 SC |
3022 | /* A C compound statement to output to stdio stream FILE the |
3023 | assembler syntax for an instruction operand OP. | |
6b3d1e47 | 3024 | |
b5144086 | 3025 | LETTER is a value that can be used to specify one of several ways |
6b3d1e47 | 3026 | of printing the operand. It is used when identical operands |
b5144086 | 3027 | must be printed differently depending on the context. LETTER |
6b3d1e47 SC |
3028 | comes from the `%' specification that was used to request |
3029 | printing of the operand. If the specification was just `%DIGIT' | |
b5144086 | 3030 | then LETTER is 0; if the specification was `%LTR DIGIT' then LETTER |
6b3d1e47 SC |
3031 | is the ASCII code for LTR. |
3032 | ||
b5144086 | 3033 | If OP is a register, this macro should print the register's name. |
6b3d1e47 SC |
3034 | The names can be found in an array `reg_names' whose type is |
3035 | `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. | |
3036 | ||
3037 | When the machine description has a specification `%PUNCT' (a `%' | |
3038 | followed by a punctuation character), this macro is called with | |
b5144086 | 3039 | a null pointer for X and the punctuation character for LETTER. |
6b3d1e47 SC |
3040 | |
3041 | The IQ2000 specific codes are: | |
3042 | ||
3043 | 'X' X is CONST_INT, prints upper 16 bits in hexadecimal format = "0x%04x", | |
3044 | 'x' X is CONST_INT, prints lower 16 bits in hexadecimal format = "0x%04x", | |
3045 | 'd' output integer constant in decimal, | |
3046 | 'z' if the operand is 0, use $0 instead of normal operand. | |
3047 | 'D' print second part of double-word register or memory operand. | |
3048 | 'L' print low-order register of double-word register operand. | |
3049 | 'M' print high-order register of double-word register operand. | |
3050 | 'C' print part of opcode for a branch condition. | |
3051 | 'F' print part of opcode for a floating-point branch condition. | |
3052 | 'N' print part of opcode for a branch condition, inverted. | |
3053 | 'W' print part of opcode for a floating-point branch condition, inverted. | |
3054 | 'A' Print part of opcode for a bit test condition. | |
3055 | 'P' Print label for a bit test. | |
3056 | 'p' Print log for a bit test. | |
3057 | 'B' print 'z' for EQ, 'n' for NE | |
3058 | 'b' print 'n' for EQ, 'z' for NE | |
3059 | 'T' print 'f' for EQ, 't' for NE | |
3060 | 't' print 't' for EQ, 'f' for NE | |
3061 | 'Z' print register and a comma, but print nothing for $fcc0 | |
3062 | '?' Print 'l' if we are to use a branch likely instead of normal branch. | |
3063 | '@' Print the name of the assembler temporary register (at or $1). | |
3064 | '.' Print the name of the register with a hard-wired zero (zero or $0). | |
3065 | '$' Print the name of the stack pointer register (sp or $29). | |
3066 | '+' Print the name of the gp register (gp or $28). */ | |
3067 | ||
bf7c1408 NF |
3068 | static void |
3069 | iq2000_print_operand (FILE *file, rtx op, int letter) | |
6b3d1e47 | 3070 | { |
b5144086 | 3071 | enum rtx_code code; |
6b3d1e47 | 3072 | |
bf7c1408 | 3073 | if (iq2000_print_operand_punct_valid_p (letter)) |
6b3d1e47 SC |
3074 | { |
3075 | switch (letter) | |
3076 | { | |
3077 | case '?': | |
3078 | if (iq2000_branch_likely) | |
3079 | putc ('l', file); | |
3080 | break; | |
3081 | ||
3082 | case '@': | |
3083 | fputs (reg_names [GP_REG_FIRST + 1], file); | |
3084 | break; | |
3085 | ||
3086 | case '.': | |
3087 | fputs (reg_names [GP_REG_FIRST + 0], file); | |
3088 | break; | |
3089 | ||
3090 | case '$': | |
3091 | fputs (reg_names[STACK_POINTER_REGNUM], file); | |
3092 | break; | |
3093 | ||
3094 | case '+': | |
3095 | fputs (reg_names[GP_REG_FIRST + 28], file); | |
3096 | break; | |
3097 | ||
3098 | default: | |
3099 | error ("PRINT_OPERAND: Unknown punctuation '%c'", letter); | |
3100 | break; | |
3101 | } | |
3102 | ||
3103 | return; | |
3104 | } | |
3105 | ||
3106 | if (! op) | |
3107 | { | |
3108 | error ("PRINT_OPERAND null pointer"); | |
3109 | return; | |
3110 | } | |
3111 | ||
3112 | code = GET_CODE (op); | |
3113 | ||
3114 | if (code == SIGN_EXTEND) | |
3115 | op = XEXP (op, 0), code = GET_CODE (op); | |
3116 | ||
3117 | if (letter == 'C') | |
3118 | switch (code) | |
3119 | { | |
3120 | case EQ: fputs ("eq", file); break; | |
3121 | case NE: fputs ("ne", file); break; | |
3122 | case GT: fputs ("gt", file); break; | |
3123 | case GE: fputs ("ge", file); break; | |
3124 | case LT: fputs ("lt", file); break; | |
3125 | case LE: fputs ("le", file); break; | |
3126 | case GTU: fputs ("ne", file); break; | |
3127 | case GEU: fputs ("geu", file); break; | |
3128 | case LTU: fputs ("ltu", file); break; | |
3129 | case LEU: fputs ("eq", file); break; | |
3130 | default: | |
3131 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%C"); | |
3132 | } | |
3133 | ||
3134 | else if (letter == 'N') | |
3135 | switch (code) | |
3136 | { | |
3137 | case EQ: fputs ("ne", file); break; | |
3138 | case NE: fputs ("eq", file); break; | |
3139 | case GT: fputs ("le", file); break; | |
3140 | case GE: fputs ("lt", file); break; | |
3141 | case LT: fputs ("ge", file); break; | |
3142 | case LE: fputs ("gt", file); break; | |
3143 | case GTU: fputs ("leu", file); break; | |
3144 | case GEU: fputs ("ltu", file); break; | |
3145 | case LTU: fputs ("geu", file); break; | |
3146 | case LEU: fputs ("gtu", file); break; | |
3147 | default: | |
3148 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%N"); | |
3149 | } | |
3150 | ||
3151 | else if (letter == 'F') | |
3152 | switch (code) | |
3153 | { | |
3154 | case EQ: fputs ("c1f", file); break; | |
3155 | case NE: fputs ("c1t", file); break; | |
3156 | default: | |
3157 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%F"); | |
3158 | } | |
3159 | ||
3160 | else if (letter == 'W') | |
3161 | switch (code) | |
3162 | { | |
3163 | case EQ: fputs ("c1t", file); break; | |
3164 | case NE: fputs ("c1f", file); break; | |
3165 | default: | |
3166 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%W"); | |
3167 | } | |
3168 | ||
3169 | else if (letter == 'A') | |
3170 | fputs (code == LABEL_REF ? "i" : "in", file); | |
3171 | ||
3172 | else if (letter == 'P') | |
3173 | { | |
3174 | if (code == LABEL_REF) | |
3175 | output_addr_const (file, op); | |
3176 | else if (code != PC) | |
3177 | output_operand_lossage ("invalid %%P operand"); | |
3178 | } | |
3179 | ||
3180 | else if (letter == 'p') | |
3181 | { | |
3182 | int value; | |
3183 | if (code != CONST_INT | |
3184 | || (value = exact_log2 (INTVAL (op))) < 0) | |
3185 | output_operand_lossage ("invalid %%p value"); | |
954c7446 JR |
3186 | else |
3187 | fprintf (file, "%d", value); | |
6b3d1e47 SC |
3188 | } |
3189 | ||
3190 | else if (letter == 'Z') | |
3191 | { | |
292c8018 | 3192 | gcc_unreachable (); |
6b3d1e47 SC |
3193 | } |
3194 | ||
3195 | else if (code == REG || code == SUBREG) | |
3196 | { | |
b5144086 | 3197 | int regnum; |
6b3d1e47 SC |
3198 | |
3199 | if (code == REG) | |
3200 | regnum = REGNO (op); | |
3201 | else | |
3202 | regnum = true_regnum (op); | |
3203 | ||
3204 | if ((letter == 'M' && ! WORDS_BIG_ENDIAN) | |
3205 | || (letter == 'L' && WORDS_BIG_ENDIAN) | |
3206 | || letter == 'D') | |
3207 | regnum++; | |
3208 | ||
3209 | fprintf (file, "%s", reg_names[regnum]); | |
3210 | } | |
3211 | ||
3212 | else if (code == MEM) | |
3213 | { | |
cc8ca59e JB |
3214 | machine_mode mode = GET_MODE (op); |
3215 | ||
6b3d1e47 | 3216 | if (letter == 'D') |
cc8ca59e | 3217 | output_address (mode, plus_constant (Pmode, XEXP (op, 0), 4)); |
6b3d1e47 | 3218 | else |
cc8ca59e | 3219 | output_address (mode, XEXP (op, 0)); |
6b3d1e47 SC |
3220 | } |
3221 | ||
3222 | else if (code == CONST_DOUBLE | |
3223 | && GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT) | |
3224 | { | |
3225 | char s[60]; | |
3226 | ||
3227 | real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (op), sizeof (s), 0, 1); | |
3228 | fputs (s, file); | |
3229 | } | |
3230 | ||
3231 | else if (letter == 'x' && GET_CODE (op) == CONST_INT) | |
3232 | fprintf (file, HOST_WIDE_INT_PRINT_HEX, 0xffff & INTVAL(op)); | |
3233 | ||
3234 | else if (letter == 'X' && GET_CODE(op) == CONST_INT) | |
3235 | fprintf (file, HOST_WIDE_INT_PRINT_HEX, 0xffff & (INTVAL (op) >> 16)); | |
3236 | ||
3237 | else if (letter == 'd' && GET_CODE(op) == CONST_INT) | |
3238 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, (INTVAL(op))); | |
3239 | ||
3240 | else if (letter == 'z' && GET_CODE (op) == CONST_INT && INTVAL (op) == 0) | |
3241 | fputs (reg_names[GP_REG_FIRST], file); | |
3242 | ||
3243 | else if (letter == 'd' || letter == 'x' || letter == 'X') | |
3244 | output_operand_lossage ("invalid use of %%d, %%x, or %%X"); | |
3245 | ||
3246 | else if (letter == 'B') | |
3247 | fputs (code == EQ ? "z" : "n", file); | |
3248 | else if (letter == 'b') | |
3249 | fputs (code == EQ ? "n" : "z", file); | |
3250 | else if (letter == 'T') | |
3251 | fputs (code == EQ ? "f" : "t", file); | |
3252 | else if (letter == 't') | |
3253 | fputs (code == EQ ? "t" : "f", file); | |
3254 | ||
3255 | else if (code == CONST && GET_CODE (XEXP (op, 0)) == REG) | |
3256 | { | |
bf7c1408 | 3257 | iq2000_print_operand (file, XEXP (op, 0), letter); |
6b3d1e47 SC |
3258 | } |
3259 | ||
3260 | else | |
3261 | output_addr_const (file, op); | |
3262 | } | |
b5144086 | 3263 | |
bf7c1408 NF |
3264 | static bool |
3265 | iq2000_print_operand_punct_valid_p (unsigned char code) | |
3266 | { | |
3267 | return iq2000_print_operand_punct[code]; | |
3268 | } | |
506d7b68 PB |
3269 | |
3270 | /* For the IQ2000, transform: | |
3271 | ||
3272 | memory(X + <large int>) | |
3273 | into: | |
3274 | Y = <large int> & ~0x7fff; | |
3275 | Z = X + Y | |
3276 | memory (Z + (<large int> & 0x7fff)); | |
3277 | */ | |
3278 | ||
3279 | rtx | |
3280 | iq2000_legitimize_address (rtx xinsn, rtx old_x ATTRIBUTE_UNUSED, | |
ef4bddc2 | 3281 | machine_mode mode) |
506d7b68 PB |
3282 | { |
3283 | if (TARGET_DEBUG_B_MODE) | |
3284 | { | |
3285 | GO_PRINTF ("\n========== LEGITIMIZE_ADDRESS\n"); | |
3286 | GO_DEBUG_RTX (xinsn); | |
3287 | } | |
3288 | ||
3289 | if (iq2000_check_split (xinsn, mode)) | |
3290 | { | |
3291 | return gen_rtx_LO_SUM (Pmode, | |
3292 | copy_to_mode_reg (Pmode, | |
3293 | gen_rtx_HIGH (Pmode, xinsn)), | |
3294 | xinsn); | |
3295 | } | |
3296 | ||
3297 | if (GET_CODE (xinsn) == PLUS) | |
3298 | { | |
3299 | rtx xplus0 = XEXP (xinsn, 0); | |
3300 | rtx xplus1 = XEXP (xinsn, 1); | |
3301 | enum rtx_code code0 = GET_CODE (xplus0); | |
3302 | enum rtx_code code1 = GET_CODE (xplus1); | |
3303 | ||
3304 | if (code0 != REG && code1 == REG) | |
3305 | { | |
3306 | xplus0 = XEXP (xinsn, 1); | |
3307 | xplus1 = XEXP (xinsn, 0); | |
3308 | code0 = GET_CODE (xplus0); | |
3309 | code1 = GET_CODE (xplus1); | |
3310 | } | |
3311 | ||
3312 | if (code0 == REG && REG_MODE_OK_FOR_BASE_P (xplus0, mode) | |
3313 | && code1 == CONST_INT && !SMALL_INT (xplus1)) | |
3314 | { | |
3315 | rtx int_reg = gen_reg_rtx (Pmode); | |
3316 | rtx ptr_reg = gen_reg_rtx (Pmode); | |
3317 | ||
3318 | emit_move_insn (int_reg, | |
3319 | GEN_INT (INTVAL (xplus1) & ~ 0x7fff)); | |
3320 | ||
f7df4a84 | 3321 | emit_insn (gen_rtx_SET (ptr_reg, |
506d7b68 PB |
3322 | gen_rtx_PLUS (Pmode, xplus0, int_reg))); |
3323 | ||
0a81f074 | 3324 | return plus_constant (Pmode, ptr_reg, INTVAL (xplus1) & 0x7fff); |
506d7b68 PB |
3325 | } |
3326 | } | |
3327 | ||
3328 | if (TARGET_DEBUG_B_MODE) | |
3329 | GO_PRINTF ("LEGITIMIZE_ADDRESS could not fix.\n"); | |
3330 | ||
3331 | return xinsn; | |
3332 | } | |
3333 | ||
3334 | ||
b5144086 | 3335 | static bool |
e548c9df | 3336 | iq2000_rtx_costs (rtx x, machine_mode mode, int outer_code ATTRIBUTE_UNUSED, |
68f932c4 | 3337 | int opno ATTRIBUTE_UNUSED, int * total, |
899cc0f4 | 3338 | bool speed ATTRIBUTE_UNUSED) |
b5144086 | 3339 | { |
e548c9df | 3340 | int code = GET_CODE (x); |
b5144086 SC |
3341 | |
3342 | switch (code) | |
3343 | { | |
3344 | case MEM: | |
3345 | { | |
3346 | int num_words = (GET_MODE_SIZE (mode) > UNITS_PER_WORD) ? 2 : 1; | |
3347 | ||
3348 | if (simple_memory_operand (x, mode)) | |
7d1f0a00 | 3349 | return COSTS_N_INSNS (num_words) != 0; |
b5144086 SC |
3350 | |
3351 | * total = COSTS_N_INSNS (2 * num_words); | |
3352 | break; | |
3353 | } | |
3354 | ||
3355 | case FFS: | |
3356 | * total = COSTS_N_INSNS (6); | |
3357 | break; | |
3358 | ||
3359 | case AND: | |
3360 | case IOR: | |
3361 | case XOR: | |
3362 | case NOT: | |
3363 | * total = COSTS_N_INSNS (mode == DImode ? 2 : 1); | |
3364 | break; | |
3365 | ||
3366 | case ASHIFT: | |
3367 | case ASHIFTRT: | |
3368 | case LSHIFTRT: | |
3369 | if (mode == DImode) | |
3370 | * total = COSTS_N_INSNS ((GET_CODE (XEXP (x, 1)) == CONST_INT) ? 4 : 12); | |
3371 | else | |
3372 | * total = COSTS_N_INSNS (1); | |
3373 | break; | |
3374 | ||
3375 | case ABS: | |
3376 | if (mode == SFmode || mode == DFmode) | |
3377 | * total = COSTS_N_INSNS (1); | |
3378 | else | |
3379 | * total = COSTS_N_INSNS (4); | |
3380 | break; | |
3381 | ||
3382 | case PLUS: | |
3383 | case MINUS: | |
3384 | if (mode == SFmode || mode == DFmode) | |
3385 | * total = COSTS_N_INSNS (6); | |
3386 | else if (mode == DImode) | |
3387 | * total = COSTS_N_INSNS (4); | |
3388 | else | |
3389 | * total = COSTS_N_INSNS (1); | |
3390 | break; | |
3391 | ||
3392 | case NEG: | |
3393 | * total = (mode == DImode) ? 4 : 1; | |
3394 | break; | |
3395 | ||
3396 | case MULT: | |
3397 | if (mode == SFmode) | |
3398 | * total = COSTS_N_INSNS (7); | |
3399 | else if (mode == DFmode) | |
3400 | * total = COSTS_N_INSNS (8); | |
3401 | else | |
3402 | * total = COSTS_N_INSNS (10); | |
3403 | break; | |
3404 | ||
3405 | case DIV: | |
3406 | case MOD: | |
3407 | if (mode == SFmode) | |
3408 | * total = COSTS_N_INSNS (23); | |
3409 | else if (mode == DFmode) | |
3410 | * total = COSTS_N_INSNS (36); | |
3411 | else | |
3412 | * total = COSTS_N_INSNS (69); | |
3413 | break; | |
3414 | ||
3415 | case UDIV: | |
3416 | case UMOD: | |
3417 | * total = COSTS_N_INSNS (69); | |
3418 | break; | |
3419 | ||
3420 | case SIGN_EXTEND: | |
3421 | * total = COSTS_N_INSNS (2); | |
3422 | break; | |
3423 | ||
3424 | case ZERO_EXTEND: | |
3425 | * total = COSTS_N_INSNS (1); | |
3426 | break; | |
3427 | ||
3428 | case CONST_INT: | |
3429 | * total = 0; | |
3430 | break; | |
3431 | ||
3432 | case LABEL_REF: | |
3433 | * total = COSTS_N_INSNS (2); | |
3434 | break; | |
3435 | ||
3436 | case CONST: | |
3437 | { | |
3438 | rtx offset = const0_rtx; | |
3439 | rtx symref = eliminate_constant_term (XEXP (x, 0), & offset); | |
3440 | ||
3441 | if (GET_CODE (symref) == LABEL_REF) | |
3442 | * total = COSTS_N_INSNS (2); | |
3443 | else if (GET_CODE (symref) != SYMBOL_REF) | |
3444 | * total = COSTS_N_INSNS (4); | |
5b8d96f1 | 3445 | /* Let's be paranoid.... */ |
b5144086 SC |
3446 | else if (INTVAL (offset) < -32768 || INTVAL (offset) > 32767) |
3447 | * total = COSTS_N_INSNS (2); | |
3448 | else | |
3449 | * total = COSTS_N_INSNS (SYMBOL_REF_FLAG (symref) ? 1 : 2); | |
3450 | break; | |
3451 | } | |
3452 | ||
3453 | case SYMBOL_REF: | |
3454 | * total = COSTS_N_INSNS (SYMBOL_REF_FLAG (x) ? 1 : 2); | |
3455 | break; | |
3456 | ||
3457 | case CONST_DOUBLE: | |
3458 | { | |
3459 | rtx high, low; | |
3460 | ||
3461 | split_double (x, & high, & low); | |
3462 | ||
3463 | * total = COSTS_N_INSNS ( (high == CONST0_RTX (GET_MODE (high)) | |
3464 | || low == CONST0_RTX (GET_MODE (low))) | |
3465 | ? 2 : 4); | |
3466 | break; | |
3467 | } | |
3468 | ||
3469 | default: | |
3470 | return false; | |
3471 | } | |
3472 | return true; | |
3473 | } | |
3474 | ||
f4a33d37 RH |
3475 | /* Worker for TARGET_ASM_TRAMPOLINE_TEMPLATE. */ |
3476 | ||
3477 | static void | |
3478 | iq2000_asm_trampoline_template (FILE *f) | |
3479 | { | |
3480 | fprintf (f, "\t.word\t0x03e00821\t\t# move $1,$31\n"); | |
3481 | fprintf (f, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n"); | |
3482 | fprintf (f, "\t.word\t0x00000000\t\t# nop\n"); | |
3483 | if (Pmode == DImode) | |
3484 | { | |
3485 | fprintf (f, "\t.word\t0xdfe30014\t\t# ld $3,20($31)\n"); | |
3486 | fprintf (f, "\t.word\t0xdfe2001c\t\t# ld $2,28($31)\n"); | |
3487 | } | |
3488 | else | |
3489 | { | |
3490 | fprintf (f, "\t.word\t0x8fe30014\t\t# lw $3,20($31)\n"); | |
3491 | fprintf (f, "\t.word\t0x8fe20018\t\t# lw $2,24($31)\n"); | |
3492 | } | |
3493 | fprintf (f, "\t.word\t0x0060c821\t\t# move $25,$3 (abicalls)\n"); | |
3494 | fprintf (f, "\t.word\t0x00600008\t\t# jr $3\n"); | |
3495 | fprintf (f, "\t.word\t0x0020f821\t\t# move $31,$1\n"); | |
3496 | fprintf (f, "\t.word\t0x00000000\t\t# <function address>\n"); | |
3497 | fprintf (f, "\t.word\t0x00000000\t\t# <static chain value>\n"); | |
3498 | } | |
3499 | ||
3500 | /* Worker for TARGET_TRAMPOLINE_INIT. */ | |
3501 | ||
3502 | static void | |
3503 | iq2000_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) | |
3504 | { | |
3505 | rtx fnaddr = XEXP (DECL_RTL (fndecl), 0); | |
3506 | rtx mem; | |
3507 | ||
3508 | emit_block_move (m_tramp, assemble_trampoline_template (), | |
3509 | GEN_INT (TRAMPOLINE_CODE_SIZE), BLOCK_OP_NORMAL); | |
3510 | ||
3511 | mem = adjust_address (m_tramp, Pmode, TRAMPOLINE_CODE_SIZE); | |
3512 | emit_move_insn (mem, fnaddr); | |
3513 | mem = adjust_address (m_tramp, Pmode, | |
3514 | TRAMPOLINE_CODE_SIZE + GET_MODE_SIZE (Pmode)); | |
3515 | emit_move_insn (mem, chain_value); | |
3516 | } | |
3517 | ||
f939c3e6 RS |
3518 | /* Implement TARGET_HARD_REGNO_MODE_OK. */ |
3519 | ||
3520 | static bool | |
3521 | iq2000_hard_regno_mode_ok (unsigned int regno, machine_mode mode) | |
3522 | { | |
3523 | return (REGNO_REG_CLASS (regno) == GR_REGS | |
3524 | ? (regno & 1) == 0 || GET_MODE_SIZE (mode) <= 4 | |
3525 | : (regno & 1) == 0 || GET_MODE_SIZE (mode) == 4); | |
3526 | } | |
3527 | ||
99e1629f RS |
3528 | /* Implement TARGET_MODES_TIEABLE_P. */ |
3529 | ||
3530 | static bool | |
3531 | iq2000_modes_tieable_p (machine_mode mode1, machine_mode mode2) | |
3532 | { | |
3533 | return ((GET_MODE_CLASS (mode1) == MODE_FLOAT | |
3534 | || GET_MODE_CLASS (mode1) == MODE_COMPLEX_FLOAT) | |
3535 | == (GET_MODE_CLASS (mode2) == MODE_FLOAT | |
3536 | || GET_MODE_CLASS (mode2) == MODE_COMPLEX_FLOAT)); | |
3537 | } | |
3538 | ||
58e17cf8 RS |
3539 | /* Implement TARGET_CONSTANT_ALIGNMENT. */ |
3540 | ||
3541 | static HOST_WIDE_INT | |
3542 | iq2000_constant_alignment (const_tree exp, HOST_WIDE_INT align) | |
3543 | { | |
3544 | if (TREE_CODE (exp) == STRING_CST || TREE_CODE (exp) == CONSTRUCTOR) | |
3545 | return MAX (align, BITS_PER_WORD); | |
3546 | return align; | |
3547 | } | |
3548 | ||
2a31c321 RS |
3549 | /* Implement TARGET_STARTING_FRAME_OFFSET. */ |
3550 | ||
3551 | static HOST_WIDE_INT | |
3552 | iq2000_starting_frame_offset (void) | |
3553 | { | |
3554 | return crtl->outgoing_args_size; | |
3555 | } | |
3556 | ||
b5144086 | 3557 | #include "gt-iq2000.h" |