]>
Commit | Line | Data |
---|---|---|
6b3d1e47 | 1 | /* Subroutines used for code generation on Vitesse IQ2000 processors |
7adcbafe | 2 | Copyright (C) 2003-2022 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, |
e7056ca4 RS |
155 | const function_arg_info &, |
156 | int *, 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); |
ef4bddc2 | 160 | static rtx iq2000_legitimize_address (rtx, rtx, machine_mode); |
52090e4d RS |
161 | static bool iq2000_pass_by_reference (cumulative_args_t, |
162 | const function_arg_info &); | |
a7c81bc1 RS |
163 | static int iq2000_arg_partial_bytes (cumulative_args_t, |
164 | const function_arg_info &arg); | |
d5cc9181 | 165 | static rtx iq2000_function_arg (cumulative_args_t, |
6783fdb7 | 166 | const function_arg_info &); |
d5cc9181 | 167 | static void iq2000_function_arg_advance (cumulative_args_t, |
6930c98c | 168 | const function_arg_info &); |
76b0cbf8 | 169 | static pad_direction iq2000_function_arg_padding (machine_mode, const_tree); |
ef4bddc2 | 170 | static unsigned int iq2000_function_arg_boundary (machine_mode, |
c2ed6cf8 | 171 | const_tree); |
d7bd8aeb | 172 | static void iq2000_va_start (tree, rtx); |
ef4bddc2 | 173 | static bool iq2000_legitimate_address_p (machine_mode, rtx, bool); |
7b5cbb57 | 174 | static bool iq2000_can_eliminate (const int, const int); |
f4a33d37 RH |
175 | static void iq2000_asm_trampoline_template (FILE *); |
176 | static void iq2000_trampoline_init (rtx, tree, rtx); | |
7ae62237 | 177 | static rtx iq2000_function_value (const_tree, const_tree, bool); |
ef4bddc2 | 178 | static rtx iq2000_libcall_value (machine_mode, const_rtx); |
bf7c1408 | 179 | static void iq2000_print_operand (FILE *, rtx, int); |
cc8ca59e | 180 | static void iq2000_print_operand_address (FILE *, machine_mode, rtx); |
bf7c1408 | 181 | static bool iq2000_print_operand_punct_valid_p (unsigned char code); |
f939c3e6 | 182 | static bool iq2000_hard_regno_mode_ok (unsigned int, machine_mode); |
99e1629f | 183 | static bool iq2000_modes_tieable_p (machine_mode, machine_mode); |
58e17cf8 | 184 | static HOST_WIDE_INT iq2000_constant_alignment (const_tree, HOST_WIDE_INT); |
2a31c321 | 185 | static HOST_WIDE_INT iq2000_starting_frame_offset (void); |
b5144086 SC |
186 | |
187 | #undef TARGET_INIT_BUILTINS | |
188 | #define TARGET_INIT_BUILTINS iq2000_init_builtins | |
189 | #undef TARGET_EXPAND_BUILTIN | |
190 | #define TARGET_EXPAND_BUILTIN iq2000_expand_builtin | |
191 | #undef TARGET_ASM_SELECT_RTX_SECTION | |
192 | #define TARGET_ASM_SELECT_RTX_SECTION iq2000_select_rtx_section | |
c5387660 JM |
193 | #undef TARGET_OPTION_OVERRIDE |
194 | #define TARGET_OPTION_OVERRIDE iq2000_option_override | |
b5144086 SC |
195 | #undef TARGET_RTX_COSTS |
196 | #define TARGET_RTX_COSTS iq2000_rtx_costs | |
197 | #undef TARGET_ADDRESS_COST | |
198 | #define TARGET_ADDRESS_COST iq2000_address_cost | |
6b3d1e47 | 199 | |
506d7b68 PB |
200 | #undef TARGET_LEGITIMIZE_ADDRESS |
201 | #define TARGET_LEGITIMIZE_ADDRESS iq2000_legitimize_address | |
202 | ||
bf7c1408 NF |
203 | #undef TARGET_PRINT_OPERAND |
204 | #define TARGET_PRINT_OPERAND iq2000_print_operand | |
205 | #undef TARGET_PRINT_OPERAND_ADDRESS | |
206 | #define TARGET_PRINT_OPERAND_ADDRESS iq2000_print_operand_address | |
207 | #undef TARGET_PRINT_OPERAND_PUNCT_VALID_P | |
208 | #define TARGET_PRINT_OPERAND_PUNCT_VALID_P iq2000_print_operand_punct_valid_p | |
209 | ||
cde0f3fd PB |
210 | #undef TARGET_PROMOTE_FUNCTION_MODE |
211 | #define TARGET_PROMOTE_FUNCTION_MODE default_promote_function_mode_always_promote | |
69a45040 | 212 | #undef TARGET_PROMOTE_PROTOTYPES |
586de218 | 213 | #define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true |
69a45040 | 214 | |
7ae62237 AS |
215 | #undef TARGET_FUNCTION_VALUE |
216 | #define TARGET_FUNCTION_VALUE iq2000_function_value | |
217 | #undef TARGET_LIBCALL_VALUE | |
218 | #define TARGET_LIBCALL_VALUE iq2000_libcall_value | |
69a45040 KH |
219 | #undef TARGET_RETURN_IN_MEMORY |
220 | #define TARGET_RETURN_IN_MEMORY iq2000_return_in_memory | |
8cd5a4e0 RH |
221 | #undef TARGET_PASS_BY_REFERENCE |
222 | #define TARGET_PASS_BY_REFERENCE iq2000_pass_by_reference | |
6cdd5672 RH |
223 | #undef TARGET_CALLEE_COPIES |
224 | #define TARGET_CALLEE_COPIES hook_callee_copies_named | |
78a52f11 RH |
225 | #undef TARGET_ARG_PARTIAL_BYTES |
226 | #define TARGET_ARG_PARTIAL_BYTES iq2000_arg_partial_bytes | |
24ef86d7 NF |
227 | #undef TARGET_FUNCTION_ARG |
228 | #define TARGET_FUNCTION_ARG iq2000_function_arg | |
229 | #undef TARGET_FUNCTION_ARG_ADVANCE | |
230 | #define TARGET_FUNCTION_ARG_ADVANCE iq2000_function_arg_advance | |
76b0cbf8 RS |
231 | #undef TARGET_FUNCTION_ARG_PADDING |
232 | #define TARGET_FUNCTION_ARG_PADDING iq2000_function_arg_padding | |
c2ed6cf8 NF |
233 | #undef TARGET_FUNCTION_ARG_BOUNDARY |
234 | #define TARGET_FUNCTION_ARG_BOUNDARY iq2000_function_arg_boundary | |
69a45040 KH |
235 | |
236 | #undef TARGET_SETUP_INCOMING_VARARGS | |
237 | #define TARGET_SETUP_INCOMING_VARARGS iq2000_setup_incoming_varargs | |
238 | #undef TARGET_STRICT_ARGUMENT_NAMING | |
239 | #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_true | |
240 | ||
d7bd8aeb JJ |
241 | #undef TARGET_EXPAND_BUILTIN_VA_START |
242 | #define TARGET_EXPAND_BUILTIN_VA_START iq2000_va_start | |
243 | ||
d81db636 SB |
244 | #undef TARGET_LRA_P |
245 | #define TARGET_LRA_P hook_bool_void_false | |
246 | ||
c6c3dba9 PB |
247 | #undef TARGET_LEGITIMATE_ADDRESS_P |
248 | #define TARGET_LEGITIMATE_ADDRESS_P iq2000_legitimate_address_p | |
249 | ||
7b5cbb57 AS |
250 | #undef TARGET_CAN_ELIMINATE |
251 | #define TARGET_CAN_ELIMINATE iq2000_can_eliminate | |
252 | ||
f4a33d37 RH |
253 | #undef TARGET_ASM_TRAMPOLINE_TEMPLATE |
254 | #define TARGET_ASM_TRAMPOLINE_TEMPLATE iq2000_asm_trampoline_template | |
255 | #undef TARGET_TRAMPOLINE_INIT | |
256 | #define TARGET_TRAMPOLINE_INIT iq2000_trampoline_init | |
257 | ||
f939c3e6 RS |
258 | #undef TARGET_HARD_REGNO_MODE_OK |
259 | #define TARGET_HARD_REGNO_MODE_OK iq2000_hard_regno_mode_ok | |
99e1629f RS |
260 | #undef TARGET_MODES_TIEABLE_P |
261 | #define TARGET_MODES_TIEABLE_P iq2000_modes_tieable_p | |
f939c3e6 | 262 | |
58e17cf8 RS |
263 | #undef TARGET_CONSTANT_ALIGNMENT |
264 | #define TARGET_CONSTANT_ALIGNMENT iq2000_constant_alignment | |
265 | ||
2a31c321 RS |
266 | #undef TARGET_STARTING_FRAME_OFFSET |
267 | #define TARGET_STARTING_FRAME_OFFSET iq2000_starting_frame_offset | |
268 | ||
9950fbd3 NC |
269 | #undef TARGET_HAVE_SPECULATION_SAFE_VALUE |
270 | #define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed | |
271 | ||
6b3d1e47 SC |
272 | struct gcc_target targetm = TARGET_INITIALIZER; |
273 | \f | |
6b3d1e47 SC |
274 | /* Return nonzero if we split the address into high and low parts. */ |
275 | ||
276 | int | |
ef4bddc2 | 277 | iq2000_check_split (rtx address, machine_mode mode) |
6b3d1e47 SC |
278 | { |
279 | /* This is the same check used in simple_memory_operand. | |
280 | We use it here because LO_SUM is not offsettable. */ | |
281 | if (GET_MODE_SIZE (mode) > (unsigned) UNITS_PER_WORD) | |
282 | return 0; | |
283 | ||
284 | if ((GET_CODE (address) == SYMBOL_REF) | |
285 | || (GET_CODE (address) == CONST | |
286 | && GET_CODE (XEXP (XEXP (address, 0), 0)) == SYMBOL_REF) | |
287 | || GET_CODE (address) == LABEL_REF) | |
288 | return 1; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | /* Return nonzero if REG is valid for MODE. */ | |
294 | ||
295 | int | |
b7849684 | 296 | iq2000_reg_mode_ok_for_base_p (rtx reg, |
ef4bddc2 | 297 | machine_mode mode ATTRIBUTE_UNUSED, |
b7849684 | 298 | int strict) |
6b3d1e47 SC |
299 | { |
300 | return (strict | |
301 | ? REGNO_MODE_OK_FOR_BASE_P (REGNO (reg), mode) | |
302 | : GP_REG_OR_PSEUDO_NONSTRICT_P (REGNO (reg), mode)); | |
303 | } | |
304 | ||
305 | /* Return a nonzero value if XINSN is a legitimate address for a | |
4375e090 | 306 | memory operand of the indicated MODE. STRICT is nonzero if this |
6b3d1e47 SC |
307 | function is called during reload. */ |
308 | ||
c6c3dba9 | 309 | bool |
ef4bddc2 | 310 | iq2000_legitimate_address_p (machine_mode mode, rtx xinsn, bool strict) |
6b3d1e47 SC |
311 | { |
312 | if (TARGET_DEBUG_A_MODE) | |
313 | { | |
331d9186 | 314 | GO_PRINTF2 ("\n========== legitimate_address_p, %sstrict\n", |
6b3d1e47 SC |
315 | strict ? "" : "not "); |
316 | GO_DEBUG_RTX (xinsn); | |
317 | } | |
318 | ||
319 | /* Check for constant before stripping off SUBREG, so that we don't | |
320 | accept (subreg (const_int)) which will fail to reload. */ | |
321 | if (CONSTANT_ADDRESS_P (xinsn) | |
322 | && ! (iq2000_check_split (xinsn, mode)) | |
323 | && ! (GET_CODE (xinsn) == CONST_INT && ! SMALL_INT (xinsn))) | |
324 | return 1; | |
325 | ||
326 | while (GET_CODE (xinsn) == SUBREG) | |
327 | xinsn = SUBREG_REG (xinsn); | |
328 | ||
329 | if (GET_CODE (xinsn) == REG | |
330 | && iq2000_reg_mode_ok_for_base_p (xinsn, mode, strict)) | |
331 | return 1; | |
332 | ||
333 | if (GET_CODE (xinsn) == LO_SUM) | |
334 | { | |
b5144086 SC |
335 | rtx xlow0 = XEXP (xinsn, 0); |
336 | rtx xlow1 = XEXP (xinsn, 1); | |
6b3d1e47 SC |
337 | |
338 | while (GET_CODE (xlow0) == SUBREG) | |
339 | xlow0 = SUBREG_REG (xlow0); | |
340 | if (GET_CODE (xlow0) == REG | |
341 | && iq2000_reg_mode_ok_for_base_p (xlow0, mode, strict) | |
342 | && iq2000_check_split (xlow1, mode)) | |
343 | return 1; | |
344 | } | |
345 | ||
346 | if (GET_CODE (xinsn) == PLUS) | |
347 | { | |
b5144086 SC |
348 | rtx xplus0 = XEXP (xinsn, 0); |
349 | rtx xplus1 = XEXP (xinsn, 1); | |
350 | enum rtx_code code0; | |
351 | enum rtx_code code1; | |
6b3d1e47 SC |
352 | |
353 | while (GET_CODE (xplus0) == SUBREG) | |
354 | xplus0 = SUBREG_REG (xplus0); | |
355 | code0 = GET_CODE (xplus0); | |
356 | ||
357 | while (GET_CODE (xplus1) == SUBREG) | |
358 | xplus1 = SUBREG_REG (xplus1); | |
359 | code1 = GET_CODE (xplus1); | |
360 | ||
361 | if (code0 == REG | |
362 | && iq2000_reg_mode_ok_for_base_p (xplus0, mode, strict)) | |
363 | { | |
364 | if (code1 == CONST_INT && SMALL_INT (xplus1) | |
365 | && SMALL_INT_UNSIGNED (xplus1) /* No negative offsets */) | |
366 | return 1; | |
367 | } | |
368 | } | |
369 | ||
370 | if (TARGET_DEBUG_A_MODE) | |
ef4bddc2 | 371 | GO_PRINTF ("Not a machine_mode mode, legitimate address\n"); |
6b3d1e47 SC |
372 | |
373 | /* The address was not legitimate. */ | |
374 | return 0; | |
375 | } | |
376 | \f | |
377 | /* Returns an operand string for the given instruction's delay slot, | |
378 | after updating filled delay slot statistics. | |
379 | ||
380 | We assume that operands[0] is the target register that is set. | |
381 | ||
382 | In order to check the next insn, most of this functionality is moved | |
383 | to FINAL_PRESCAN_INSN, and we just set the global variables that | |
384 | it needs. */ | |
385 | ||
386 | const char * | |
b7849684 | 387 | iq2000_fill_delay_slot (const char *ret, enum delay_type type, rtx operands[], |
b32d5189 | 388 | rtx_insn *cur_insn) |
6b3d1e47 | 389 | { |
b5144086 | 390 | rtx set_reg; |
ef4bddc2 | 391 | machine_mode mode; |
b32d5189 | 392 | rtx_insn *next_insn = cur_insn ? NEXT_INSN (cur_insn) : NULL; |
b5144086 | 393 | int num_nops; |
6b3d1e47 SC |
394 | |
395 | if (type == DELAY_LOAD || type == DELAY_FCMP) | |
396 | num_nops = 1; | |
397 | ||
398 | else | |
399 | num_nops = 0; | |
400 | ||
401 | /* Make sure that we don't put nop's after labels. */ | |
402 | next_insn = NEXT_INSN (cur_insn); | |
403 | while (next_insn != 0 | |
b64925dc | 404 | && (NOTE_P (next_insn) || LABEL_P (next_insn))) |
6b3d1e47 SC |
405 | next_insn = NEXT_INSN (next_insn); |
406 | ||
407 | dslots_load_total += num_nops; | |
408 | if (TARGET_DEBUG_C_MODE | |
409 | || type == DELAY_NONE | |
410 | || operands == 0 | |
411 | || cur_insn == 0 | |
412 | || next_insn == 0 | |
b64925dc | 413 | || LABEL_P (next_insn) |
6b3d1e47 SC |
414 | || (set_reg = operands[0]) == 0) |
415 | { | |
416 | dslots_number_nops = 0; | |
417 | iq2000_load_reg = 0; | |
418 | iq2000_load_reg2 = 0; | |
419 | iq2000_load_reg3 = 0; | |
420 | iq2000_load_reg4 = 0; | |
b5144086 | 421 | |
6b3d1e47 SC |
422 | return ret; |
423 | } | |
424 | ||
425 | set_reg = operands[0]; | |
426 | if (set_reg == 0) | |
427 | return ret; | |
428 | ||
429 | while (GET_CODE (set_reg) == SUBREG) | |
430 | set_reg = SUBREG_REG (set_reg); | |
431 | ||
432 | mode = GET_MODE (set_reg); | |
433 | dslots_number_nops = num_nops; | |
434 | iq2000_load_reg = set_reg; | |
435 | if (GET_MODE_SIZE (mode) | |
436 | > (unsigned) (UNITS_PER_WORD)) | |
437 | iq2000_load_reg2 = gen_rtx_REG (SImode, REGNO (set_reg) + 1); | |
438 | else | |
439 | iq2000_load_reg2 = 0; | |
440 | ||
441 | return ret; | |
442 | } | |
443 | \f | |
444 | /* Determine whether a memory reference takes one (based off of the GP | |
445 | pointer), two (normal), or three (label + reg) instructions, and bump the | |
446 | appropriate counter for -mstats. */ | |
447 | ||
448 | static void | |
b7849684 | 449 | iq2000_count_memory_refs (rtx op, int num) |
6b3d1e47 SC |
450 | { |
451 | int additional = 0; | |
452 | int n_words = 0; | |
453 | rtx addr, plus0, plus1; | |
454 | enum rtx_code code0, code1; | |
455 | int looping; | |
456 | ||
457 | if (TARGET_DEBUG_B_MODE) | |
458 | { | |
459 | fprintf (stderr, "\n========== iq2000_count_memory_refs:\n"); | |
460 | debug_rtx (op); | |
461 | } | |
462 | ||
463 | /* Skip MEM if passed, otherwise handle movsi of address. */ | |
464 | addr = (GET_CODE (op) != MEM) ? op : XEXP (op, 0); | |
465 | ||
466 | /* Loop, going through the address RTL. */ | |
467 | do | |
468 | { | |
469 | looping = FALSE; | |
470 | switch (GET_CODE (addr)) | |
471 | { | |
472 | case REG: | |
473 | case CONST_INT: | |
474 | case LO_SUM: | |
475 | break; | |
476 | ||
477 | case PLUS: | |
478 | plus0 = XEXP (addr, 0); | |
479 | plus1 = XEXP (addr, 1); | |
480 | code0 = GET_CODE (plus0); | |
481 | code1 = GET_CODE (plus1); | |
482 | ||
483 | if (code0 == REG) | |
484 | { | |
485 | additional++; | |
486 | addr = plus1; | |
487 | looping = 1; | |
488 | continue; | |
489 | } | |
490 | ||
491 | if (code0 == CONST_INT) | |
492 | { | |
493 | addr = plus1; | |
494 | looping = 1; | |
495 | continue; | |
496 | } | |
497 | ||
498 | if (code1 == REG) | |
499 | { | |
500 | additional++; | |
501 | addr = plus0; | |
502 | looping = 1; | |
503 | continue; | |
504 | } | |
505 | ||
506 | if (code1 == CONST_INT) | |
507 | { | |
508 | addr = plus0; | |
509 | looping = 1; | |
510 | continue; | |
511 | } | |
512 | ||
513 | if (code0 == SYMBOL_REF || code0 == LABEL_REF || code0 == CONST) | |
514 | { | |
515 | addr = plus0; | |
516 | looping = 1; | |
517 | continue; | |
518 | } | |
519 | ||
520 | if (code1 == SYMBOL_REF || code1 == LABEL_REF || code1 == CONST) | |
521 | { | |
522 | addr = plus1; | |
523 | looping = 1; | |
524 | continue; | |
525 | } | |
526 | ||
527 | break; | |
528 | ||
529 | case LABEL_REF: | |
b5144086 | 530 | n_words = 2; /* Always 2 words. */ |
6b3d1e47 SC |
531 | break; |
532 | ||
533 | case CONST: | |
534 | addr = XEXP (addr, 0); | |
535 | looping = 1; | |
536 | continue; | |
537 | ||
538 | case SYMBOL_REF: | |
539 | n_words = SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
540 | break; | |
541 | ||
542 | default: | |
543 | break; | |
544 | } | |
545 | } | |
546 | while (looping); | |
547 | ||
548 | if (n_words == 0) | |
549 | return; | |
550 | ||
551 | n_words += additional; | |
552 | if (n_words > 3) | |
553 | n_words = 3; | |
554 | ||
555 | num_refs[n_words-1] += num; | |
556 | } | |
557 | \f | |
b5144086 SC |
558 | /* Abort after printing out a specific insn. */ |
559 | ||
560 | static void | |
561 | abort_with_insn (rtx insn, const char * reason) | |
562 | { | |
563 | error (reason); | |
564 | debug_rtx (insn); | |
292c8018 | 565 | fancy_abort (__FILE__, __LINE__, __FUNCTION__); |
b5144086 SC |
566 | } |
567 | \f | |
6b3d1e47 SC |
568 | /* Return the appropriate instructions to move one operand to another. */ |
569 | ||
570 | const char * | |
b32d5189 | 571 | iq2000_move_1word (rtx operands[], rtx_insn *insn, int unsignedp) |
6b3d1e47 SC |
572 | { |
573 | const char *ret = 0; | |
574 | rtx op0 = operands[0]; | |
575 | rtx op1 = operands[1]; | |
576 | enum rtx_code code0 = GET_CODE (op0); | |
577 | enum rtx_code code1 = GET_CODE (op1); | |
ef4bddc2 | 578 | machine_mode mode = GET_MODE (op0); |
6b3d1e47 SC |
579 | int subreg_offset0 = 0; |
580 | int subreg_offset1 = 0; | |
581 | enum delay_type delay = DELAY_NONE; | |
582 | ||
583 | while (code0 == SUBREG) | |
584 | { | |
585 | subreg_offset0 += subreg_regno_offset (REGNO (SUBREG_REG (op0)), | |
586 | GET_MODE (SUBREG_REG (op0)), | |
587 | SUBREG_BYTE (op0), | |
588 | GET_MODE (op0)); | |
589 | op0 = SUBREG_REG (op0); | |
590 | code0 = GET_CODE (op0); | |
591 | } | |
592 | ||
593 | while (code1 == SUBREG) | |
594 | { | |
595 | subreg_offset1 += subreg_regno_offset (REGNO (SUBREG_REG (op1)), | |
596 | GET_MODE (SUBREG_REG (op1)), | |
597 | SUBREG_BYTE (op1), | |
598 | GET_MODE (op1)); | |
599 | op1 = SUBREG_REG (op1); | |
600 | code1 = GET_CODE (op1); | |
601 | } | |
602 | ||
603 | /* For our purposes, a condition code mode is the same as SImode. */ | |
604 | if (mode == CCmode) | |
605 | mode = SImode; | |
606 | ||
607 | if (code0 == REG) | |
608 | { | |
609 | int regno0 = REGNO (op0) + subreg_offset0; | |
610 | ||
611 | if (code1 == REG) | |
612 | { | |
613 | int regno1 = REGNO (op1) + subreg_offset1; | |
614 | ||
615 | /* Do not do anything for assigning a register to itself */ | |
616 | if (regno0 == regno1) | |
617 | ret = ""; | |
618 | ||
619 | else if (GP_REG_P (regno0)) | |
620 | { | |
621 | if (GP_REG_P (regno1)) | |
622 | ret = "or\t%0,%%0,%1"; | |
623 | } | |
624 | ||
625 | } | |
626 | ||
627 | else if (code1 == MEM) | |
628 | { | |
629 | delay = DELAY_LOAD; | |
630 | ||
631 | if (TARGET_STATS) | |
632 | iq2000_count_memory_refs (op1, 1); | |
633 | ||
634 | if (GP_REG_P (regno0)) | |
635 | { | |
636 | /* For loads, use the mode of the memory item, instead of the | |
637 | target, so zero/sign extend can use this code as well. */ | |
638 | switch (GET_MODE (op1)) | |
639 | { | |
640 | default: | |
641 | break; | |
4e10a5a7 | 642 | case E_SFmode: |
6b3d1e47 SC |
643 | ret = "lw\t%0,%1"; |
644 | break; | |
4e10a5a7 RS |
645 | case E_SImode: |
646 | case E_CCmode: | |
6b3d1e47 SC |
647 | ret = "lw\t%0,%1"; |
648 | break; | |
4e10a5a7 | 649 | case E_HImode: |
6b3d1e47 SC |
650 | ret = (unsignedp) ? "lhu\t%0,%1" : "lh\t%0,%1"; |
651 | break; | |
4e10a5a7 | 652 | case E_QImode: |
6b3d1e47 SC |
653 | ret = (unsignedp) ? "lbu\t%0,%1" : "lb\t%0,%1"; |
654 | break; | |
655 | } | |
656 | } | |
657 | } | |
658 | ||
659 | else if (code1 == CONST_INT | |
660 | || (code1 == CONST_DOUBLE | |
661 | && GET_MODE (op1) == VOIDmode)) | |
662 | { | |
663 | if (code1 == CONST_DOUBLE) | |
664 | { | |
665 | /* This can happen when storing constants into long long | |
666 | bitfields. Just store the least significant word of | |
667 | the value. */ | |
668 | operands[1] = op1 = GEN_INT (CONST_DOUBLE_LOW (op1)); | |
669 | } | |
670 | ||
671 | if (INTVAL (op1) == 0) | |
672 | { | |
673 | if (GP_REG_P (regno0)) | |
674 | ret = "or\t%0,%%0,%z1"; | |
675 | } | |
676 | else if (GP_REG_P (regno0)) | |
677 | { | |
678 | if (SMALL_INT_UNSIGNED (op1)) | |
679 | ret = "ori\t%0,%%0,%x1\t\t\t# %1"; | |
680 | else if (SMALL_INT (op1)) | |
681 | ret = "addiu\t%0,%%0,%1\t\t\t# %1"; | |
682 | else | |
683 | ret = "lui\t%0,%X1\t\t\t# %1\n\tori\t%0,%0,%x1"; | |
684 | } | |
685 | } | |
686 | ||
687 | else if (code1 == CONST_DOUBLE && mode == SFmode) | |
688 | { | |
689 | if (op1 == CONST0_RTX (SFmode)) | |
690 | { | |
691 | if (GP_REG_P (regno0)) | |
692 | ret = "or\t%0,%%0,%."; | |
693 | } | |
694 | ||
695 | else | |
696 | { | |
697 | delay = DELAY_LOAD; | |
698 | ret = "li.s\t%0,%1"; | |
699 | } | |
700 | } | |
701 | ||
702 | else if (code1 == LABEL_REF) | |
703 | { | |
704 | if (TARGET_STATS) | |
705 | iq2000_count_memory_refs (op1, 1); | |
706 | ||
707 | ret = "la\t%0,%a1"; | |
708 | } | |
709 | ||
710 | else if (code1 == SYMBOL_REF || code1 == CONST) | |
711 | { | |
712 | if (TARGET_STATS) | |
713 | iq2000_count_memory_refs (op1, 1); | |
714 | ||
715 | ret = "la\t%0,%a1"; | |
716 | } | |
717 | ||
718 | else if (code1 == PLUS) | |
719 | { | |
720 | rtx add_op0 = XEXP (op1, 0); | |
721 | rtx add_op1 = XEXP (op1, 1); | |
722 | ||
723 | if (GET_CODE (XEXP (op1, 1)) == REG | |
724 | && GET_CODE (XEXP (op1, 0)) == CONST_INT) | |
725 | add_op0 = XEXP (op1, 1), add_op1 = XEXP (op1, 0); | |
726 | ||
727 | operands[2] = add_op0; | |
728 | operands[3] = add_op1; | |
729 | ret = "add%:\t%0,%2,%3"; | |
730 | } | |
731 | ||
732 | else if (code1 == HIGH) | |
733 | { | |
734 | operands[1] = XEXP (op1, 0); | |
735 | ret = "lui\t%0,%%hi(%1)"; | |
736 | } | |
737 | } | |
738 | ||
739 | else if (code0 == MEM) | |
740 | { | |
741 | if (TARGET_STATS) | |
742 | iq2000_count_memory_refs (op0, 1); | |
743 | ||
744 | if (code1 == REG) | |
745 | { | |
746 | int regno1 = REGNO (op1) + subreg_offset1; | |
747 | ||
748 | if (GP_REG_P (regno1)) | |
749 | { | |
750 | switch (mode) | |
751 | { | |
4e10a5a7 RS |
752 | case E_SFmode: ret = "sw\t%1,%0"; break; |
753 | case E_SImode: ret = "sw\t%1,%0"; break; | |
754 | case E_HImode: ret = "sh\t%1,%0"; break; | |
755 | case E_QImode: ret = "sb\t%1,%0"; break; | |
6b3d1e47 SC |
756 | default: break; |
757 | } | |
758 | } | |
759 | } | |
760 | ||
761 | else if (code1 == CONST_INT && INTVAL (op1) == 0) | |
762 | { | |
763 | switch (mode) | |
764 | { | |
4e10a5a7 RS |
765 | case E_SFmode: ret = "sw\t%z1,%0"; break; |
766 | case E_SImode: ret = "sw\t%z1,%0"; break; | |
767 | case E_HImode: ret = "sh\t%z1,%0"; break; | |
768 | case E_QImode: ret = "sb\t%z1,%0"; break; | |
6b3d1e47 SC |
769 | default: break; |
770 | } | |
771 | } | |
772 | ||
773 | else if (code1 == CONST_DOUBLE && op1 == CONST0_RTX (mode)) | |
774 | { | |
775 | switch (mode) | |
776 | { | |
4e10a5a7 RS |
777 | case E_SFmode: ret = "sw\t%.,%0"; break; |
778 | case E_SImode: ret = "sw\t%.,%0"; break; | |
779 | case E_HImode: ret = "sh\t%.,%0"; break; | |
780 | case E_QImode: ret = "sb\t%.,%0"; break; | |
6b3d1e47 SC |
781 | default: break; |
782 | } | |
783 | } | |
784 | } | |
785 | ||
786 | if (ret == 0) | |
787 | { | |
788 | abort_with_insn (insn, "Bad move"); | |
789 | return 0; | |
790 | } | |
791 | ||
792 | if (delay != DELAY_NONE) | |
793 | return iq2000_fill_delay_slot (ret, delay, operands, insn); | |
794 | ||
795 | return ret; | |
796 | } | |
797 | \f | |
798 | /* Provide the costs of an addressing mode that contains ADDR. */ | |
799 | ||
b5144086 | 800 | static int |
ef4bddc2 | 801 | iq2000_address_cost (rtx addr, machine_mode mode, addr_space_t as, |
b413068c | 802 | bool speed) |
6b3d1e47 SC |
803 | { |
804 | switch (GET_CODE (addr)) | |
805 | { | |
806 | case LO_SUM: | |
807 | return 1; | |
808 | ||
809 | case LABEL_REF: | |
810 | return 2; | |
811 | ||
812 | case CONST: | |
813 | { | |
814 | rtx offset = const0_rtx; | |
b5144086 SC |
815 | |
816 | addr = eliminate_constant_term (XEXP (addr, 0), & offset); | |
6b3d1e47 SC |
817 | if (GET_CODE (addr) == LABEL_REF) |
818 | return 2; | |
819 | ||
820 | if (GET_CODE (addr) != SYMBOL_REF) | |
821 | return 4; | |
822 | ||
823 | if (! SMALL_INT (offset)) | |
824 | return 2; | |
825 | } | |
826 | ||
b5144086 | 827 | /* Fall through. */ |
6b3d1e47 SC |
828 | |
829 | case SYMBOL_REF: | |
830 | return SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
831 | ||
832 | case PLUS: | |
833 | { | |
b5144086 SC |
834 | rtx plus0 = XEXP (addr, 0); |
835 | rtx plus1 = XEXP (addr, 1); | |
6b3d1e47 SC |
836 | |
837 | if (GET_CODE (plus0) != REG && GET_CODE (plus1) == REG) | |
838 | plus0 = XEXP (addr, 1), plus1 = XEXP (addr, 0); | |
839 | ||
840 | if (GET_CODE (plus0) != REG) | |
841 | break; | |
842 | ||
843 | switch (GET_CODE (plus1)) | |
844 | { | |
845 | case CONST_INT: | |
846 | return SMALL_INT (plus1) ? 1 : 2; | |
847 | ||
848 | case CONST: | |
849 | case SYMBOL_REF: | |
850 | case LABEL_REF: | |
851 | case HIGH: | |
852 | case LO_SUM: | |
b413068c | 853 | return iq2000_address_cost (plus1, mode, as, speed) + 1; |
6b3d1e47 SC |
854 | |
855 | default: | |
856 | break; | |
857 | } | |
858 | } | |
859 | ||
860 | default: | |
861 | break; | |
862 | } | |
863 | ||
864 | return 4; | |
865 | } | |
866 | \f | |
867 | /* Make normal rtx_code into something we can index from an array. */ | |
868 | ||
869 | static enum internal_test | |
b7849684 | 870 | map_test_to_internal_test (enum rtx_code test_code) |
6b3d1e47 SC |
871 | { |
872 | enum internal_test test = ITEST_MAX; | |
873 | ||
874 | switch (test_code) | |
875 | { | |
876 | case EQ: test = ITEST_EQ; break; | |
877 | case NE: test = ITEST_NE; break; | |
878 | case GT: test = ITEST_GT; break; | |
879 | case GE: test = ITEST_GE; break; | |
880 | case LT: test = ITEST_LT; break; | |
881 | case LE: test = ITEST_LE; break; | |
882 | case GTU: test = ITEST_GTU; break; | |
883 | case GEU: test = ITEST_GEU; break; | |
884 | case LTU: test = ITEST_LTU; break; | |
885 | case LEU: test = ITEST_LEU; break; | |
886 | default: break; | |
887 | } | |
888 | ||
889 | return test; | |
890 | } | |
891 | \f | |
b5144086 SC |
892 | /* Generate the code to do a TEST_CODE comparison on two integer values CMP0 |
893 | and CMP1. P_INVERT is NULL or ptr if branch needs to reverse its test. | |
894 | The return value RESULT is: | |
6b3d1e47 | 895 | (reg:SI xx) The pseudo register the comparison is in |
b5144086 | 896 | 0 No register, generate a simple branch. */ |
6b3d1e47 SC |
897 | |
898 | rtx | |
b7849684 JE |
899 | gen_int_relational (enum rtx_code test_code, rtx result, rtx cmp0, rtx cmp1, |
900 | int *p_invert) | |
6b3d1e47 SC |
901 | { |
902 | struct cmp_info | |
903 | { | |
b5144086 SC |
904 | enum rtx_code test_code; /* Code to use in instruction (LT vs. LTU). */ |
905 | int const_low; /* Low bound of constant we can accept. */ | |
906 | int const_high; /* High bound of constant we can accept. */ | |
907 | int const_add; /* Constant to add (convert LE -> LT). */ | |
908 | int reverse_regs; /* Reverse registers in test. */ | |
909 | int invert_const; /* != 0 if invert value if cmp1 is constant. */ | |
910 | int invert_reg; /* != 0 if invert value if cmp1 is register. */ | |
6b3d1e47 SC |
911 | int unsignedp; /* != 0 for unsigned comparisons. */ |
912 | }; | |
913 | ||
b5144086 SC |
914 | static struct cmp_info info[ (int)ITEST_MAX ] = |
915 | { | |
6b3d1e47 SC |
916 | { XOR, 0, 65535, 0, 0, 0, 0, 0 }, /* EQ */ |
917 | { XOR, 0, 65535, 0, 0, 1, 1, 0 }, /* NE */ | |
918 | { LT, -32769, 32766, 1, 1, 1, 0, 0 }, /* GT */ | |
919 | { LT, -32768, 32767, 0, 0, 1, 1, 0 }, /* GE */ | |
920 | { LT, -32768, 32767, 0, 0, 0, 0, 0 }, /* LT */ | |
921 | { LT, -32769, 32766, 1, 1, 0, 1, 0 }, /* LE */ | |
922 | { LTU, -32769, 32766, 1, 1, 1, 0, 1 }, /* GTU */ | |
923 | { LTU, -32768, 32767, 0, 0, 1, 1, 1 }, /* GEU */ | |
924 | { LTU, -32768, 32767, 0, 0, 0, 0, 1 }, /* LTU */ | |
925 | { LTU, -32769, 32766, 1, 1, 0, 1, 1 }, /* LEU */ | |
926 | }; | |
927 | ||
928 | enum internal_test test; | |
ef4bddc2 | 929 | machine_mode mode; |
6b3d1e47 SC |
930 | struct cmp_info *p_info; |
931 | int branch_p; | |
932 | int eqne_p; | |
933 | int invert; | |
934 | rtx reg; | |
935 | rtx reg2; | |
936 | ||
937 | test = map_test_to_internal_test (test_code); | |
292c8018 | 938 | gcc_assert (test != ITEST_MAX); |
6b3d1e47 SC |
939 | |
940 | p_info = &info[(int) test]; | |
941 | eqne_p = (p_info->test_code == XOR); | |
942 | ||
943 | mode = GET_MODE (cmp0); | |
944 | if (mode == VOIDmode) | |
945 | mode = GET_MODE (cmp1); | |
946 | ||
b5144086 | 947 | /* Eliminate simple branches. */ |
6b3d1e47 SC |
948 | branch_p = (result == 0); |
949 | if (branch_p) | |
950 | { | |
951 | if (GET_CODE (cmp0) == REG || GET_CODE (cmp0) == SUBREG) | |
952 | { | |
b5144086 | 953 | /* Comparisons against zero are simple branches. */ |
6b3d1e47 SC |
954 | if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) |
955 | return 0; | |
956 | ||
957 | /* Test for beq/bne. */ | |
958 | if (eqne_p) | |
959 | return 0; | |
960 | } | |
961 | ||
b5144086 | 962 | /* Allocate a pseudo to calculate the value in. */ |
6b3d1e47 SC |
963 | result = gen_reg_rtx (mode); |
964 | } | |
965 | ||
966 | /* Make sure we can handle any constants given to us. */ | |
967 | if (GET_CODE (cmp0) == CONST_INT) | |
968 | cmp0 = force_reg (mode, cmp0); | |
969 | ||
970 | if (GET_CODE (cmp1) == CONST_INT) | |
971 | { | |
972 | HOST_WIDE_INT value = INTVAL (cmp1); | |
973 | ||
974 | if (value < p_info->const_low | |
975 | || value > p_info->const_high) | |
976 | cmp1 = force_reg (mode, cmp1); | |
977 | } | |
978 | ||
979 | /* See if we need to invert the result. */ | |
980 | invert = (GET_CODE (cmp1) == CONST_INT | |
981 | ? p_info->invert_const : p_info->invert_reg); | |
982 | ||
983 | if (p_invert != (int *)0) | |
984 | { | |
985 | *p_invert = invert; | |
986 | invert = 0; | |
987 | } | |
988 | ||
989 | /* Comparison to constants, may involve adding 1 to change a LT into LE. | |
990 | Comparison between two registers, may involve switching operands. */ | |
991 | if (GET_CODE (cmp1) == CONST_INT) | |
992 | { | |
993 | if (p_info->const_add != 0) | |
994 | { | |
0a2aaacc | 995 | HOST_WIDE_INT new_const = INTVAL (cmp1) + p_info->const_add; |
6b3d1e47 SC |
996 | |
997 | /* If modification of cmp1 caused overflow, | |
998 | we would get the wrong answer if we follow the usual path; | |
999 | thus, x > 0xffffffffU would turn into x > 0U. */ | |
1000 | if ((p_info->unsignedp | |
0a2aaacc | 1001 | ? (unsigned HOST_WIDE_INT) new_const > |
6b3d1e47 | 1002 | (unsigned HOST_WIDE_INT) INTVAL (cmp1) |
0a2aaacc | 1003 | : new_const > INTVAL (cmp1)) |
6b3d1e47 SC |
1004 | != (p_info->const_add > 0)) |
1005 | { | |
1006 | /* This test is always true, but if INVERT is true then | |
1007 | the result of the test needs to be inverted so 0 should | |
1008 | be returned instead. */ | |
1009 | emit_move_insn (result, invert ? const0_rtx : const_true_rtx); | |
1010 | return result; | |
1011 | } | |
1012 | else | |
0a2aaacc | 1013 | cmp1 = GEN_INT (new_const); |
6b3d1e47 SC |
1014 | } |
1015 | } | |
1016 | ||
1017 | else if (p_info->reverse_regs) | |
1018 | { | |
1019 | rtx temp = cmp0; | |
1020 | cmp0 = cmp1; | |
1021 | cmp1 = temp; | |
1022 | } | |
1023 | ||
1024 | if (test == ITEST_NE && GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) | |
1025 | reg = cmp0; | |
1026 | else | |
1027 | { | |
1028 | reg = (invert || eqne_p) ? gen_reg_rtx (mode) : result; | |
1c563bed | 1029 | convert_move (reg, gen_rtx_fmt_ee (p_info->test_code, mode, cmp0, cmp1), 0); |
6b3d1e47 SC |
1030 | } |
1031 | ||
1032 | if (test == ITEST_NE) | |
1033 | { | |
f1c25d3b | 1034 | convert_move (result, gen_rtx_GTU (mode, reg, const0_rtx), 0); |
6b3d1e47 SC |
1035 | if (p_invert != NULL) |
1036 | *p_invert = 0; | |
1037 | invert = 0; | |
1038 | } | |
1039 | ||
1040 | else if (test == ITEST_EQ) | |
1041 | { | |
1042 | reg2 = invert ? gen_reg_rtx (mode) : result; | |
1043 | convert_move (reg2, gen_rtx_LTU (mode, reg, const1_rtx), 0); | |
1044 | reg = reg2; | |
1045 | } | |
1046 | ||
1047 | if (invert) | |
1048 | { | |
1049 | rtx one; | |
1050 | ||
1051 | one = const1_rtx; | |
f1c25d3b | 1052 | convert_move (result, gen_rtx_XOR (mode, reg, one), 0); |
6b3d1e47 SC |
1053 | } |
1054 | ||
1055 | return result; | |
1056 | } | |
1057 | \f | |
1058 | /* Emit the common code for doing conditional branches. | |
1059 | operand[0] is the label to jump to. | |
1060 | The comparison operands are saved away by cmp{si,di,sf,df}. */ | |
1061 | ||
1062 | void | |
ef4bddc2 | 1063 | gen_conditional_branch (rtx operands[], machine_mode mode) |
6b3d1e47 | 1064 | { |
f90b7a5a PB |
1065 | enum rtx_code test_code = GET_CODE (operands[0]); |
1066 | rtx cmp0 = operands[1]; | |
1067 | rtx cmp1 = operands[2]; | |
6b3d1e47 SC |
1068 | rtx reg; |
1069 | int invert; | |
1070 | rtx label1, label2; | |
1071 | ||
f90b7a5a PB |
1072 | invert = 0; |
1073 | reg = gen_int_relational (test_code, NULL_RTX, cmp0, cmp1, &invert); | |
6b3d1e47 | 1074 | |
f90b7a5a PB |
1075 | if (reg) |
1076 | { | |
6b3d1e47 SC |
1077 | cmp0 = reg; |
1078 | cmp1 = const0_rtx; | |
f90b7a5a | 1079 | test_code = NE; |
6b3d1e47 | 1080 | } |
f90b7a5a PB |
1081 | else if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) != 0) |
1082 | /* We don't want to build a comparison against a nonzero | |
1083 | constant. */ | |
1084 | cmp1 = force_reg (mode, cmp1); | |
6b3d1e47 SC |
1085 | |
1086 | /* Generate the branch. */ | |
f90b7a5a | 1087 | label1 = gen_rtx_LABEL_REF (VOIDmode, operands[3]); |
6b3d1e47 SC |
1088 | label2 = pc_rtx; |
1089 | ||
1090 | if (invert) | |
1091 | { | |
1092 | label2 = label1; | |
1093 | label1 = pc_rtx; | |
1094 | } | |
1095 | ||
f7df4a84 | 1096 | emit_jump_insn (gen_rtx_SET (pc_rtx, |
6b3d1e47 | 1097 | gen_rtx_IF_THEN_ELSE (VOIDmode, |
0f4c242b | 1098 | gen_rtx_fmt_ee (test_code, |
335db8e6 | 1099 | VOIDmode, |
0f4c242b | 1100 | cmp0, cmp1), |
6b3d1e47 SC |
1101 | label1, label2))); |
1102 | } | |
1103 | \f | |
b5144086 | 1104 | /* Initialize CUM for a function FNTYPE. */ |
6b3d1e47 SC |
1105 | |
1106 | void | |
b7849684 JE |
1107 | init_cumulative_args (CUMULATIVE_ARGS *cum, tree fntype, |
1108 | rtx libname ATTRIBUTE_UNUSED) | |
6b3d1e47 SC |
1109 | { |
1110 | static CUMULATIVE_ARGS zero_cum; | |
b5144086 SC |
1111 | tree param; |
1112 | tree next_param; | |
6b3d1e47 SC |
1113 | |
1114 | if (TARGET_DEBUG_D_MODE) | |
1115 | { | |
1116 | fprintf (stderr, | |
b5144086 | 1117 | "\ninit_cumulative_args, fntype = 0x%.8lx", (long) fntype); |
6b3d1e47 SC |
1118 | |
1119 | if (!fntype) | |
1120 | fputc ('\n', stderr); | |
1121 | ||
1122 | else | |
1123 | { | |
1124 | tree ret_type = TREE_TYPE (fntype); | |
b5144086 | 1125 | |
6b3d1e47 | 1126 | fprintf (stderr, ", fntype code = %s, ret code = %s\n", |
5806f481 PM |
1127 | get_tree_code_name (TREE_CODE (fntype)), |
1128 | get_tree_code_name (TREE_CODE (ret_type))); | |
6b3d1e47 SC |
1129 | } |
1130 | } | |
1131 | ||
1132 | *cum = zero_cum; | |
1133 | ||
1134 | /* Determine if this function has variable arguments. This is | |
1135 | indicated by the last argument being 'void_type_mode' if there | |
1136 | are no variable arguments. The standard IQ2000 calling sequence | |
1137 | passes all arguments in the general purpose registers in this case. */ | |
1138 | ||
1139 | for (param = fntype ? TYPE_ARG_TYPES (fntype) : 0; | |
1140 | param != 0; param = next_param) | |
1141 | { | |
1142 | next_param = TREE_CHAIN (param); | |
1143 | if (next_param == 0 && TREE_VALUE (param) != void_type_node) | |
1144 | cum->gp_reg_found = 1; | |
1145 | } | |
1146 | } | |
1147 | ||
6930c98c | 1148 | /* Implement TARGET_FUNCTION_ARG_ADVANCE. */ |
6b3d1e47 | 1149 | |
24ef86d7 | 1150 | static void |
6930c98c RS |
1151 | iq2000_function_arg_advance (cumulative_args_t cum_v, |
1152 | const function_arg_info &arg) | |
6b3d1e47 | 1153 | { |
d5cc9181 JR |
1154 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1155 | ||
6b3d1e47 SC |
1156 | if (TARGET_DEBUG_D_MODE) |
1157 | { | |
1158 | fprintf (stderr, | |
1159 | "function_adv({gp reg found = %d, arg # = %2d, words = %2d}, %4s, ", | |
1160 | cum->gp_reg_found, cum->arg_number, cum->arg_words, | |
6930c98c RS |
1161 | GET_MODE_NAME (arg.mode)); |
1162 | fprintf (stderr, "%p", (const void *) arg.type); | |
1163 | fprintf (stderr, ", %d )\n\n", arg.named); | |
6b3d1e47 SC |
1164 | } |
1165 | ||
1166 | cum->arg_number++; | |
6930c98c | 1167 | switch (arg.mode) |
6b3d1e47 | 1168 | { |
4e10a5a7 | 1169 | case E_VOIDmode: |
6b3d1e47 SC |
1170 | break; |
1171 | ||
1172 | default: | |
6930c98c RS |
1173 | gcc_assert (GET_MODE_CLASS (arg.mode) == MODE_COMPLEX_INT |
1174 | || GET_MODE_CLASS (arg.mode) == MODE_COMPLEX_FLOAT); | |
6b3d1e47 SC |
1175 | |
1176 | cum->gp_reg_found = 1; | |
6930c98c | 1177 | cum->arg_words += ((GET_MODE_SIZE (arg.mode) + UNITS_PER_WORD - 1) |
6b3d1e47 SC |
1178 | / UNITS_PER_WORD); |
1179 | break; | |
1180 | ||
4e10a5a7 | 1181 | case E_BLKmode: |
6b3d1e47 | 1182 | cum->gp_reg_found = 1; |
6930c98c | 1183 | cum->arg_words += ((int_size_in_bytes (arg.type) + UNITS_PER_WORD - 1) |
6b3d1e47 SC |
1184 | / UNITS_PER_WORD); |
1185 | break; | |
1186 | ||
4e10a5a7 | 1187 | case E_SFmode: |
b5144086 | 1188 | cum->arg_words ++; |
6b3d1e47 SC |
1189 | if (! cum->gp_reg_found && cum->arg_number <= 2) |
1190 | cum->fp_code += 1 << ((cum->arg_number - 1) * 2); | |
1191 | break; | |
1192 | ||
4e10a5a7 | 1193 | case E_DFmode: |
6b3d1e47 SC |
1194 | cum->arg_words += 2; |
1195 | if (! cum->gp_reg_found && cum->arg_number <= 2) | |
1196 | cum->fp_code += 2 << ((cum->arg_number - 1) * 2); | |
1197 | break; | |
1198 | ||
4e10a5a7 | 1199 | case E_DImode: |
6b3d1e47 SC |
1200 | cum->gp_reg_found = 1; |
1201 | cum->arg_words += 2; | |
1202 | break; | |
1203 | ||
4e10a5a7 | 1204 | case E_TImode: |
ac4fc08a NC |
1205 | cum->gp_reg_found = 1; |
1206 | cum->arg_words += 4; | |
1207 | break; | |
1208 | ||
4e10a5a7 RS |
1209 | case E_QImode: |
1210 | case E_HImode: | |
1211 | case E_SImode: | |
6b3d1e47 | 1212 | cum->gp_reg_found = 1; |
b5144086 | 1213 | cum->arg_words ++; |
6b3d1e47 SC |
1214 | break; |
1215 | } | |
1216 | } | |
1217 | ||
6783fdb7 RS |
1218 | /* Return an RTL expression containing the register for argument ARG in CUM, |
1219 | or 0 if the argument is to be passed on the stack. */ | |
6b3d1e47 | 1220 | |
24ef86d7 | 1221 | static rtx |
6783fdb7 | 1222 | iq2000_function_arg (cumulative_args_t cum_v, const function_arg_info &arg) |
6b3d1e47 | 1223 | { |
d5cc9181 | 1224 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
6783fdb7 RS |
1225 | tree type = arg.type; |
1226 | machine_mode mode = arg.mode; | |
6b3d1e47 SC |
1227 | rtx ret; |
1228 | int regbase = -1; | |
1229 | int bias = 0; | |
1230 | unsigned int *arg_words = &cum->arg_words; | |
1231 | int struct_p = (type != 0 | |
1232 | && (TREE_CODE (type) == RECORD_TYPE | |
1233 | || TREE_CODE (type) == UNION_TYPE | |
1234 | || TREE_CODE (type) == QUAL_UNION_TYPE)); | |
1235 | ||
1236 | if (TARGET_DEBUG_D_MODE) | |
1237 | { | |
1238 | fprintf (stderr, | |
1239 | "function_arg( {gp reg found = %d, arg # = %2d, words = %2d}, %4s, ", | |
1240 | cum->gp_reg_found, cum->arg_number, cum->arg_words, | |
1241 | GET_MODE_NAME (mode)); | |
586de218 | 1242 | fprintf (stderr, "%p", (const void *) type); |
6783fdb7 | 1243 | fprintf (stderr, ", %d ) = ", arg.named); |
6b3d1e47 SC |
1244 | } |
1245 | ||
1246 | ||
1247 | cum->last_arg_fp = 0; | |
1248 | switch (mode) | |
1249 | { | |
4e10a5a7 | 1250 | case E_SFmode: |
6b3d1e47 SC |
1251 | regbase = GP_ARG_FIRST; |
1252 | break; | |
1253 | ||
4e10a5a7 | 1254 | case E_DFmode: |
6b3d1e47 SC |
1255 | cum->arg_words += cum->arg_words & 1; |
1256 | ||
1257 | regbase = GP_ARG_FIRST; | |
1258 | break; | |
1259 | ||
1260 | default: | |
292c8018 NS |
1261 | gcc_assert (GET_MODE_CLASS (mode) == MODE_COMPLEX_INT |
1262 | || GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT); | |
6b3d1e47 | 1263 | |
4b592619 | 1264 | /* FALLTHRU */ |
4e10a5a7 | 1265 | case E_BLKmode: |
6b3d1e47 SC |
1266 | if (type != NULL_TREE && TYPE_ALIGN (type) > (unsigned) BITS_PER_WORD) |
1267 | cum->arg_words += (cum->arg_words & 1); | |
1268 | regbase = GP_ARG_FIRST; | |
1269 | break; | |
1270 | ||
4e10a5a7 RS |
1271 | case E_VOIDmode: |
1272 | case E_QImode: | |
1273 | case E_HImode: | |
1274 | case E_SImode: | |
6b3d1e47 SC |
1275 | regbase = GP_ARG_FIRST; |
1276 | break; | |
1277 | ||
4e10a5a7 | 1278 | case E_DImode: |
6b3d1e47 SC |
1279 | cum->arg_words += (cum->arg_words & 1); |
1280 | regbase = GP_ARG_FIRST; | |
ac4fc08a NC |
1281 | break; |
1282 | ||
4e10a5a7 | 1283 | case E_TImode: |
ac4fc08a NC |
1284 | cum->arg_words += (cum->arg_words & 3); |
1285 | regbase = GP_ARG_FIRST; | |
1286 | break; | |
6b3d1e47 SC |
1287 | } |
1288 | ||
1289 | if (*arg_words >= (unsigned) MAX_ARGS_IN_REGISTERS) | |
1290 | { | |
1291 | if (TARGET_DEBUG_D_MODE) | |
1292 | fprintf (stderr, "<stack>%s\n", struct_p ? ", [struct]" : ""); | |
1293 | ||
1294 | ret = 0; | |
1295 | } | |
1296 | else | |
1297 | { | |
292c8018 | 1298 | gcc_assert (regbase != -1); |
6b3d1e47 SC |
1299 | |
1300 | if (! type || TREE_CODE (type) != RECORD_TYPE | |
6783fdb7 | 1301 | || ! arg.named || ! TYPE_SIZE_UNIT (type) |
cc269bb6 | 1302 | || ! tree_fits_uhwi_p (TYPE_SIZE_UNIT (type))) |
6b3d1e47 SC |
1303 | ret = gen_rtx_REG (mode, regbase + *arg_words + bias); |
1304 | else | |
1305 | { | |
1306 | tree field; | |
1307 | ||
910ad8de | 1308 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
6b3d1e47 SC |
1309 | if (TREE_CODE (field) == FIELD_DECL |
1310 | && TREE_CODE (TREE_TYPE (field)) == REAL_TYPE | |
1311 | && TYPE_PRECISION (TREE_TYPE (field)) == BITS_PER_WORD | |
9541ffee | 1312 | && tree_fits_shwi_p (bit_position (field)) |
6b3d1e47 SC |
1313 | && int_bit_position (field) % BITS_PER_WORD == 0) |
1314 | break; | |
1315 | ||
1316 | /* If the whole struct fits a DFmode register, | |
1317 | we don't need the PARALLEL. */ | |
1318 | if (! field || mode == DFmode) | |
1319 | ret = gen_rtx_REG (mode, regbase + *arg_words + bias); | |
1320 | else | |
1321 | { | |
1322 | unsigned int chunks; | |
1323 | HOST_WIDE_INT bitpos; | |
1324 | unsigned int regno; | |
1325 | unsigned int i; | |
1326 | ||
1327 | /* ??? If this is a packed structure, then the last hunk won't | |
1328 | be 64 bits. */ | |
6b3d1e47 | 1329 | chunks |
ae7e9ddd | 1330 | = tree_to_uhwi (TYPE_SIZE_UNIT (type)) / UNITS_PER_WORD; |
6b3d1e47 SC |
1331 | if (chunks + *arg_words + bias > (unsigned) MAX_ARGS_IN_REGISTERS) |
1332 | chunks = MAX_ARGS_IN_REGISTERS - *arg_words - bias; | |
1333 | ||
b5144086 | 1334 | /* Assign_parms checks the mode of ENTRY_PARM, so we must |
6b3d1e47 SC |
1335 | use the actual mode here. */ |
1336 | ret = gen_rtx_PARALLEL (mode, rtvec_alloc (chunks)); | |
1337 | ||
1338 | bitpos = 0; | |
1339 | regno = regbase + *arg_words + bias; | |
1340 | field = TYPE_FIELDS (type); | |
1341 | for (i = 0; i < chunks; i++) | |
1342 | { | |
1343 | rtx reg; | |
1344 | ||
910ad8de | 1345 | for (; field; field = DECL_CHAIN (field)) |
6b3d1e47 SC |
1346 | if (TREE_CODE (field) == FIELD_DECL |
1347 | && int_bit_position (field) >= bitpos) | |
1348 | break; | |
1349 | ||
1350 | if (field | |
1351 | && int_bit_position (field) == bitpos | |
1352 | && TREE_CODE (TREE_TYPE (field)) == REAL_TYPE | |
1353 | && TYPE_PRECISION (TREE_TYPE (field)) == BITS_PER_WORD) | |
1354 | reg = gen_rtx_REG (DFmode, regno++); | |
1355 | else | |
1356 | reg = gen_rtx_REG (word_mode, regno); | |
1357 | ||
1358 | XVECEXP (ret, 0, i) | |
1359 | = gen_rtx_EXPR_LIST (VOIDmode, reg, | |
1360 | GEN_INT (bitpos / BITS_PER_UNIT)); | |
1361 | ||
1362 | bitpos += 64; | |
1363 | regno++; | |
1364 | } | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | if (TARGET_DEBUG_D_MODE) | |
1369 | fprintf (stderr, "%s%s\n", reg_names[regbase + *arg_words + bias], | |
1370 | struct_p ? ", [struct]" : ""); | |
1371 | } | |
1372 | ||
6783fdb7 | 1373 | /* We will be called with an end marker after the last argument |
6b3d1e47 SC |
1374 | has been seen. Whatever we return will be passed to the call |
1375 | insn. If we need any shifts for small structures, return them in | |
1376 | a PARALLEL. */ | |
6783fdb7 | 1377 | if (arg.end_marker_p ()) |
6b3d1e47 SC |
1378 | { |
1379 | if (cum->num_adjusts > 0) | |
ef4bddc2 | 1380 | ret = gen_rtx_PARALLEL ((machine_mode) cum->fp_code, |
6b3d1e47 SC |
1381 | gen_rtvec_v (cum->num_adjusts, cum->adjust)); |
1382 | } | |
1383 | ||
1384 | return ret; | |
1385 | } | |
1386 | ||
76b0cbf8 RS |
1387 | /* Implement TARGET_FUNCTION_ARG_PADDING. */ |
1388 | ||
1389 | static pad_direction | |
1390 | iq2000_function_arg_padding (machine_mode mode, const_tree type) | |
1391 | { | |
1392 | return (! BYTES_BIG_ENDIAN | |
1393 | ? PAD_UPWARD | |
1394 | : ((mode == BLKmode | |
1395 | ? (type | |
1396 | && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST | |
1397 | && int_size_in_bytes (type) < (PARM_BOUNDARY / BITS_PER_UNIT)) | |
1398 | : (GET_MODE_BITSIZE (mode) < PARM_BOUNDARY | |
1399 | && GET_MODE_CLASS (mode) == MODE_INT)) | |
1400 | ? PAD_DOWNWARD : PAD_UPWARD)); | |
1401 | } | |
1402 | ||
c2ed6cf8 | 1403 | static unsigned int |
ef4bddc2 | 1404 | iq2000_function_arg_boundary (machine_mode mode, const_tree type) |
c2ed6cf8 NF |
1405 | { |
1406 | return (type != NULL_TREE | |
1407 | ? (TYPE_ALIGN (type) <= PARM_BOUNDARY | |
1408 | ? PARM_BOUNDARY | |
1409 | : TYPE_ALIGN (type)) | |
1410 | : (GET_MODE_ALIGNMENT (mode) <= PARM_BOUNDARY | |
1411 | ? PARM_BOUNDARY | |
1412 | : GET_MODE_ALIGNMENT (mode))); | |
1413 | } | |
1414 | ||
78a52f11 | 1415 | static int |
a7c81bc1 RS |
1416 | iq2000_arg_partial_bytes (cumulative_args_t cum_v, |
1417 | const function_arg_info &arg) | |
6b3d1e47 | 1418 | { |
d5cc9181 JR |
1419 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1420 | ||
a7c81bc1 | 1421 | if (arg.mode == DImode && cum->arg_words == MAX_ARGS_IN_REGISTERS - 1) |
6b3d1e47 SC |
1422 | { |
1423 | if (TARGET_DEBUG_D_MODE) | |
78a52f11 RH |
1424 | fprintf (stderr, "iq2000_arg_partial_bytes=%d\n", UNITS_PER_WORD); |
1425 | return UNITS_PER_WORD; | |
6b3d1e47 SC |
1426 | } |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | \f | |
1431 | /* Implement va_start. */ | |
1432 | ||
d7bd8aeb | 1433 | static void |
b7849684 | 1434 | iq2000_va_start (tree valist, rtx nextarg) |
6b3d1e47 SC |
1435 | { |
1436 | int int_arg_words; | |
b5144086 | 1437 | /* Find out how many non-float named formals. */ |
6b3d1e47 | 1438 | int gpr_save_area_size; |
b5144086 | 1439 | /* Note UNITS_PER_WORD is 4 bytes. */ |
38173d38 | 1440 | int_arg_words = crtl->args.info.arg_words; |
b5144086 | 1441 | |
6b3d1e47 | 1442 | if (int_arg_words < 8 ) |
b5144086 | 1443 | /* Adjust for the prologue's economy measure. */ |
6b3d1e47 SC |
1444 | gpr_save_area_size = (8 - int_arg_words) * UNITS_PER_WORD; |
1445 | else | |
1446 | gpr_save_area_size = 0; | |
1447 | ||
1448 | /* Everything is in the GPR save area, or in the overflow | |
1449 | area which is contiguous with it. */ | |
0a81f074 | 1450 | nextarg = plus_constant (Pmode, nextarg, - gpr_save_area_size); |
6b3d1e47 SC |
1451 | std_expand_builtin_va_start (valist, nextarg); |
1452 | } | |
6b3d1e47 | 1453 | \f |
b5144086 | 1454 | /* Allocate a chunk of memory for per-function machine-dependent data. */ |
6b3d1e47 | 1455 | |
b5144086 SC |
1456 | static struct machine_function * |
1457 | iq2000_init_machine_status (void) | |
6b3d1e47 | 1458 | { |
766090c2 | 1459 | return ggc_cleared_alloc<machine_function> (); |
6b3d1e47 | 1460 | } |
b5144086 | 1461 | |
6b3d1e47 SC |
1462 | /* Detect any conflicts in the switches. */ |
1463 | ||
c5387660 JM |
1464 | static void |
1465 | iq2000_option_override (void) | |
6b3d1e47 | 1466 | { |
6b3d1e47 SC |
1467 | target_flags &= ~MASK_GPOPT; |
1468 | ||
1469 | iq2000_isa = IQ2000_ISA_DEFAULT; | |
1470 | ||
1471 | /* Identify the processor type. */ | |
1472 | ||
6b3d1e47 SC |
1473 | iq2000_print_operand_punct['?'] = 1; |
1474 | iq2000_print_operand_punct['#'] = 1; | |
1475 | iq2000_print_operand_punct['&'] = 1; | |
1476 | iq2000_print_operand_punct['!'] = 1; | |
1477 | iq2000_print_operand_punct['*'] = 1; | |
1478 | iq2000_print_operand_punct['@'] = 1; | |
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 | ||
1493 | /* Save GPR registers in word_mode sized hunks. word_mode hasn't been | |
1494 | initialized yet, so we can't use that here. */ | |
1495 | gpr_mode = SImode; | |
1496 | ||
1497 | /* Function to allocate machine-dependent function status. */ | |
b5144086 | 1498 | init_machine_status = iq2000_init_machine_status; |
6b3d1e47 SC |
1499 | } |
1500 | \f | |
1501 | /* The arg pointer (which is eliminated) points to the virtual frame pointer, | |
1502 | while the frame pointer (which may be eliminated) points to the stack | |
1503 | pointer after the initial adjustments. */ | |
1504 | ||
1505 | HOST_WIDE_INT | |
b7849684 | 1506 | iq2000_debugger_offset (rtx addr, HOST_WIDE_INT offset) |
6b3d1e47 SC |
1507 | { |
1508 | rtx offset2 = const0_rtx; | |
b5144086 | 1509 | rtx reg = eliminate_constant_term (addr, & offset2); |
6b3d1e47 SC |
1510 | |
1511 | if (offset == 0) | |
1512 | offset = INTVAL (offset2); | |
1513 | ||
1514 | if (reg == stack_pointer_rtx || reg == frame_pointer_rtx | |
1515 | || reg == hard_frame_pointer_rtx) | |
1516 | { | |
b5144086 | 1517 | HOST_WIDE_INT frame_size = (!cfun->machine->initialized) |
6b3d1e47 | 1518 | ? compute_frame_size (get_frame_size ()) |
b5144086 | 1519 | : cfun->machine->total_size; |
6b3d1e47 SC |
1520 | |
1521 | offset = offset - frame_size; | |
1522 | } | |
1523 | ||
1524 | return offset; | |
1525 | } | |
1526 | \f | |
1527 | /* If defined, a C statement to be executed just prior to the output of | |
1528 | assembler code for INSN, to modify the extracted operands so they will be | |
1529 | output differently. | |
1530 | ||
1531 | Here the argument OPVEC is the vector containing the operands extracted | |
1532 | from INSN, and NOPERANDS is the number of elements of the vector which | |
1533 | contain meaningful data for this insn. The contents of this vector are | |
1534 | what will be used to convert the insn template into assembler code, so you | |
1535 | can change the assembler output by changing the contents of the vector. | |
1536 | ||
1537 | We use it to check if the current insn needs a nop in front of it because | |
1538 | of load delays, and also to update the delay slot statistics. */ | |
1539 | ||
1540 | void | |
6ae94a0b | 1541 | final_prescan_insn (rtx_insn *insn, rtx opvec[] ATTRIBUTE_UNUSED, |
b7849684 | 1542 | int noperands ATTRIBUTE_UNUSED) |
6b3d1e47 SC |
1543 | { |
1544 | if (dslots_number_nops > 0) | |
1545 | { | |
1546 | rtx pattern = PATTERN (insn); | |
1547 | int length = get_attr_length (insn); | |
1548 | ||
b5144086 | 1549 | /* Do we need to emit a NOP? */ |
6b3d1e47 SC |
1550 | if (length == 0 |
1551 | || (iq2000_load_reg != 0 && reg_mentioned_p (iq2000_load_reg, pattern)) | |
1552 | || (iq2000_load_reg2 != 0 && reg_mentioned_p (iq2000_load_reg2, pattern)) | |
1553 | || (iq2000_load_reg3 != 0 && reg_mentioned_p (iq2000_load_reg3, pattern)) | |
1554 | || (iq2000_load_reg4 != 0 | |
1555 | && reg_mentioned_p (iq2000_load_reg4, pattern))) | |
1556 | fputs ("\tnop\n", asm_out_file); | |
1557 | ||
1558 | else | |
b5144086 | 1559 | dslots_load_filled ++; |
6b3d1e47 SC |
1560 | |
1561 | while (--dslots_number_nops > 0) | |
1562 | fputs ("\tnop\n", asm_out_file); | |
1563 | ||
1564 | iq2000_load_reg = 0; | |
1565 | iq2000_load_reg2 = 0; | |
1566 | iq2000_load_reg3 = 0; | |
1567 | iq2000_load_reg4 = 0; | |
1568 | } | |
1569 | ||
b64925dc SB |
1570 | if ( (JUMP_P (insn) |
1571 | || CALL_P (insn) | |
6b3d1e47 SC |
1572 | || (GET_CODE (PATTERN (insn)) == RETURN)) |
1573 | && NEXT_INSN (PREV_INSN (insn)) == insn) | |
1574 | { | |
00b94487 | 1575 | rtx_insn *nop_insn = emit_insn_after (gen_nop (), insn); |
6b3d1e47 SC |
1576 | INSN_ADDRESSES_NEW (nop_insn, -1); |
1577 | } | |
1578 | ||
1579 | if (TARGET_STATS | |
b64925dc | 1580 | && (JUMP_P (insn) || CALL_P (insn))) |
b5144086 | 1581 | dslots_jump_total ++; |
6b3d1e47 SC |
1582 | } |
1583 | \f | |
1584 | /* Return the bytes needed to compute the frame pointer from the current | |
b5144086 | 1585 | stack pointer where SIZE is the # of var. bytes allocated. |
6b3d1e47 SC |
1586 | |
1587 | IQ2000 stack frames look like: | |
1588 | ||
1589 | Before call After call | |
1590 | +-----------------------+ +-----------------------+ | |
1591 | high | | | | | |
1592 | mem. | | | | | |
1593 | | caller's temps. | | caller's temps. | | |
1594 | | | | | | |
1595 | +-----------------------+ +-----------------------+ | |
1596 | | | | | | |
1597 | | arguments on stack. | | arguments on stack. | | |
1598 | | | | | | |
1599 | +-----------------------+ +-----------------------+ | |
1600 | | 4 words to save | | 4 words to save | | |
1601 | | arguments passed | | arguments passed | | |
1602 | | in registers, even | | in registers, even | | |
1603 | SP->| if not passed. | VFP->| if not passed. | | |
1604 | +-----------------------+ +-----------------------+ | |
1605 | | | | |
1606 | | fp register save | | |
1607 | | | | |
1608 | +-----------------------+ | |
1609 | | | | |
1610 | | gp register save | | |
1611 | | | | |
1612 | +-----------------------+ | |
1613 | | | | |
1614 | | local variables | | |
1615 | | | | |
1616 | +-----------------------+ | |
1617 | | | | |
1618 | | alloca allocations | | |
1619 | | | | |
1620 | +-----------------------+ | |
1621 | | | | |
1622 | | GP save for V.4 abi | | |
1623 | | | | |
1624 | +-----------------------+ | |
1625 | | | | |
1626 | | arguments on stack | | |
1627 | | | | |
1628 | +-----------------------+ | |
1629 | | 4 words to save | | |
1630 | | arguments passed | | |
1631 | | in registers, even | | |
1632 | low SP->| if not passed. | | |
b5144086 | 1633 | memory +-----------------------+ */ |
6b3d1e47 SC |
1634 | |
1635 | HOST_WIDE_INT | |
b7849684 | 1636 | compute_frame_size (HOST_WIDE_INT size) |
6b3d1e47 SC |
1637 | { |
1638 | int regno; | |
b5144086 SC |
1639 | HOST_WIDE_INT total_size; /* # bytes that the entire frame takes up. */ |
1640 | HOST_WIDE_INT var_size; /* # bytes that variables take up. */ | |
1641 | HOST_WIDE_INT args_size; /* # bytes that outgoing arguments take up. */ | |
1642 | HOST_WIDE_INT extra_size; /* # extra bytes. */ | |
1643 | HOST_WIDE_INT gp_reg_rounded; /* # bytes needed to store gp after rounding. */ | |
1644 | HOST_WIDE_INT gp_reg_size; /* # bytes needed to store gp regs. */ | |
1645 | HOST_WIDE_INT fp_reg_size; /* # bytes needed to store fp regs. */ | |
1646 | long mask; /* mask of saved gp registers. */ | |
6b3d1e47 SC |
1647 | |
1648 | gp_reg_size = 0; | |
1649 | fp_reg_size = 0; | |
1650 | mask = 0; | |
1651 | extra_size = IQ2000_STACK_ALIGN ((0)); | |
1652 | var_size = IQ2000_STACK_ALIGN (size); | |
38173d38 | 1653 | args_size = IQ2000_STACK_ALIGN (crtl->outgoing_args_size); |
6b3d1e47 SC |
1654 | |
1655 | /* If a function dynamically allocates the stack and | |
b5144086 | 1656 | has 0 for STACK_DYNAMIC_OFFSET then allocate some stack space. */ |
e3b5732b | 1657 | if (args_size == 0 && cfun->calls_alloca) |
6b3d1e47 SC |
1658 | args_size = 4 * UNITS_PER_WORD; |
1659 | ||
1660 | total_size = var_size + args_size + extra_size; | |
1661 | ||
1662 | /* Calculate space needed for gp registers. */ | |
1663 | for (regno = GP_REG_FIRST; regno <= GP_REG_LAST; regno++) | |
1664 | { | |
1665 | if (MUST_SAVE_REGISTER (regno)) | |
1666 | { | |
1667 | gp_reg_size += GET_MODE_SIZE (gpr_mode); | |
1668 | mask |= 1L << (regno - GP_REG_FIRST); | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | /* We need to restore these for the handler. */ | |
e3b5732b | 1673 | if (crtl->calls_eh_return) |
6b3d1e47 | 1674 | { |
b5144086 SC |
1675 | unsigned int i; |
1676 | ||
6b3d1e47 SC |
1677 | for (i = 0; ; ++i) |
1678 | { | |
1679 | regno = EH_RETURN_DATA_REGNO (i); | |
b5144086 | 1680 | if (regno == (int) INVALID_REGNUM) |
6b3d1e47 SC |
1681 | break; |
1682 | gp_reg_size += GET_MODE_SIZE (gpr_mode); | |
1683 | mask |= 1L << (regno - GP_REG_FIRST); | |
1684 | } | |
1685 | } | |
1686 | ||
6b3d1e47 SC |
1687 | gp_reg_rounded = IQ2000_STACK_ALIGN (gp_reg_size); |
1688 | total_size += gp_reg_rounded + IQ2000_STACK_ALIGN (fp_reg_size); | |
1689 | ||
1690 | /* The gp reg is caller saved, so there is no need for leaf routines | |
1691 | (total_size == extra_size) to save the gp reg. */ | |
1692 | if (total_size == extra_size | |
1693 | && ! profile_flag) | |
1694 | total_size = extra_size = 0; | |
1695 | ||
38173d38 | 1696 | total_size += IQ2000_STACK_ALIGN (crtl->args.pretend_args_size); |
6b3d1e47 SC |
1697 | |
1698 | /* Save other computed information. */ | |
b5144086 SC |
1699 | cfun->machine->total_size = total_size; |
1700 | cfun->machine->var_size = var_size; | |
1701 | cfun->machine->args_size = args_size; | |
1702 | cfun->machine->extra_size = extra_size; | |
1703 | cfun->machine->gp_reg_size = gp_reg_size; | |
1704 | cfun->machine->fp_reg_size = fp_reg_size; | |
1705 | cfun->machine->mask = mask; | |
1706 | cfun->machine->initialized = reload_completed; | |
1707 | cfun->machine->num_gp = gp_reg_size / UNITS_PER_WORD; | |
6b3d1e47 SC |
1708 | |
1709 | if (mask) | |
1710 | { | |
1711 | unsigned long offset; | |
1712 | ||
1713 | offset = (args_size + extra_size + var_size | |
1714 | + gp_reg_size - GET_MODE_SIZE (gpr_mode)); | |
1715 | ||
b5144086 SC |
1716 | cfun->machine->gp_sp_offset = offset; |
1717 | cfun->machine->gp_save_offset = offset - total_size; | |
6b3d1e47 SC |
1718 | } |
1719 | else | |
1720 | { | |
b5144086 SC |
1721 | cfun->machine->gp_sp_offset = 0; |
1722 | cfun->machine->gp_save_offset = 0; | |
6b3d1e47 SC |
1723 | } |
1724 | ||
b5144086 SC |
1725 | cfun->machine->fp_sp_offset = 0; |
1726 | cfun->machine->fp_save_offset = 0; | |
6b3d1e47 SC |
1727 | |
1728 | /* Ok, we're done. */ | |
1729 | return total_size; | |
1730 | } | |
1731 | \f | |
7b5cbb57 AS |
1732 | |
1733 | /* We can always eliminate to the frame pointer. We can eliminate to the | |
1734 | stack pointer unless a frame pointer is needed. */ | |
1735 | ||
1736 | bool | |
1737 | iq2000_can_eliminate (const int from, const int to) | |
1738 | { | |
1739 | return (from == RETURN_ADDRESS_POINTER_REGNUM | |
1740 | && (! leaf_function_p () | |
954c7446 | 1741 | || (to == GP_REG_FIRST + 31 && leaf_function_p ()))) |
7b5cbb57 AS |
1742 | || (from != RETURN_ADDRESS_POINTER_REGNUM |
1743 | && (to == HARD_FRAME_POINTER_REGNUM | |
1744 | || (to == STACK_POINTER_REGNUM | |
1745 | && ! frame_pointer_needed))); | |
1746 | } | |
1747 | ||
6b3d1e47 SC |
1748 | /* Implement INITIAL_ELIMINATION_OFFSET. FROM is either the frame |
1749 | pointer, argument pointer, or return address pointer. TO is either | |
1750 | the stack pointer or hard frame pointer. */ | |
1751 | ||
1752 | int | |
b7849684 | 1753 | iq2000_initial_elimination_offset (int from, int to ATTRIBUTE_UNUSED) |
6b3d1e47 SC |
1754 | { |
1755 | int offset; | |
1756 | ||
1757 | compute_frame_size (get_frame_size ()); | |
1758 | if ((from) == FRAME_POINTER_REGNUM) | |
1759 | (offset) = 0; | |
1760 | else if ((from) == ARG_POINTER_REGNUM) | |
b5144086 | 1761 | (offset) = (cfun->machine->total_size); |
6b3d1e47 | 1762 | else if ((from) == RETURN_ADDRESS_POINTER_REGNUM) |
b5144086 SC |
1763 | { |
1764 | if (leaf_function_p ()) | |
1765 | (offset) = 0; | |
1766 | else (offset) = cfun->machine->gp_sp_offset | |
1767 | + ((UNITS_PER_WORD - (POINTER_SIZE / BITS_PER_UNIT)) | |
1768 | * (BYTES_BIG_ENDIAN != 0)); | |
1769 | } | |
954c7446 JR |
1770 | else |
1771 | gcc_unreachable (); | |
6b3d1e47 SC |
1772 | |
1773 | return offset; | |
1774 | } | |
1775 | \f | |
1776 | /* Common code to emit the insns (or to write the instructions to a file) | |
1777 | to save/restore registers. | |
1778 | Other parts of the code assume that IQ2000_TEMP1_REGNUM (aka large_reg) | |
1779 | is not modified within save_restore_insns. */ | |
1780 | ||
1781 | #define BITSET_P(VALUE,BIT) (((VALUE) & (1L << (BIT))) != 0) | |
1782 | ||
1783 | /* Emit instructions to load the value (SP + OFFSET) into IQ2000_TEMP2_REGNUM | |
1784 | and return an rtl expression for the register. Write the assembly | |
1785 | instructions directly to FILE if it is not null, otherwise emit them as | |
1786 | rtl. | |
1787 | ||
1788 | This function is a subroutine of save_restore_insns. It is used when | |
1789 | OFFSET is too large to add in a single instruction. */ | |
1790 | ||
1791 | static rtx | |
b7849684 | 1792 | iq2000_add_large_offset_to_sp (HOST_WIDE_INT offset) |
6b3d1e47 SC |
1793 | { |
1794 | rtx reg = gen_rtx_REG (Pmode, IQ2000_TEMP2_REGNUM); | |
1795 | rtx offset_rtx = GEN_INT (offset); | |
1796 | ||
1797 | emit_move_insn (reg, offset_rtx); | |
1798 | emit_insn (gen_addsi3 (reg, reg, stack_pointer_rtx)); | |
1799 | return reg; | |
1800 | } | |
1801 | ||
1802 | /* Make INSN frame related and note that it performs the frame-related | |
1803 | operation DWARF_PATTERN. */ | |
1804 | ||
1805 | static void | |
6ae94a0b | 1806 | iq2000_annotate_frame_insn (rtx_insn *insn, rtx dwarf_pattern) |
6b3d1e47 SC |
1807 | { |
1808 | RTX_FRAME_RELATED_P (insn) = 1; | |
1809 | REG_NOTES (insn) = alloc_EXPR_LIST (REG_FRAME_RELATED_EXPR, | |
1810 | dwarf_pattern, | |
1811 | REG_NOTES (insn)); | |
1812 | } | |
1813 | ||
1814 | /* Emit a move instruction that stores REG in MEM. Make the instruction | |
1815 | frame related and note that it stores REG at (SP + OFFSET). */ | |
1816 | ||
1817 | static void | |
b7849684 | 1818 | iq2000_emit_frame_related_store (rtx mem, rtx reg, HOST_WIDE_INT offset) |
6b3d1e47 | 1819 | { |
0a81f074 | 1820 | rtx dwarf_address = plus_constant (Pmode, stack_pointer_rtx, offset); |
6b3d1e47 SC |
1821 | rtx dwarf_mem = gen_rtx_MEM (GET_MODE (reg), dwarf_address); |
1822 | ||
1823 | iq2000_annotate_frame_insn (emit_move_insn (mem, reg), | |
f7df4a84 | 1824 | gen_rtx_SET (dwarf_mem, reg)); |
6b3d1e47 SC |
1825 | } |
1826 | ||
b5144086 SC |
1827 | /* Emit instructions to save/restore registers, as determined by STORE_P. */ |
1828 | ||
6b3d1e47 | 1829 | static void |
b7849684 | 1830 | save_restore_insns (int store_p) |
6b3d1e47 | 1831 | { |
b5144086 | 1832 | long mask = cfun->machine->mask; |
6b3d1e47 SC |
1833 | int regno; |
1834 | rtx base_reg_rtx; | |
1835 | HOST_WIDE_INT base_offset; | |
1836 | HOST_WIDE_INT gp_offset; | |
1837 | HOST_WIDE_INT end_offset; | |
1838 | ||
292c8018 NS |
1839 | gcc_assert (!frame_pointer_needed |
1840 | || BITSET_P (mask, HARD_FRAME_POINTER_REGNUM - GP_REG_FIRST)); | |
6b3d1e47 SC |
1841 | |
1842 | if (mask == 0) | |
1843 | { | |
1844 | base_reg_rtx = 0, base_offset = 0; | |
1845 | return; | |
1846 | } | |
1847 | ||
1848 | /* Save registers starting from high to low. The debuggers prefer at least | |
1849 | the return register be stored at func+4, and also it allows us not to | |
1850 | need a nop in the epilog if at least one register is reloaded in | |
1851 | addition to return address. */ | |
1852 | ||
1853 | /* Save GP registers if needed. */ | |
1854 | /* Pick which pointer to use as a base register. For small frames, just | |
1855 | use the stack pointer. Otherwise, use a temporary register. Save 2 | |
1856 | cycles if the save area is near the end of a large frame, by reusing | |
1857 | the constant created in the prologue/epilogue to adjust the stack | |
1858 | frame. */ | |
1859 | ||
b5144086 | 1860 | gp_offset = cfun->machine->gp_sp_offset; |
6b3d1e47 | 1861 | end_offset |
b5144086 | 1862 | = gp_offset - (cfun->machine->gp_reg_size |
6b3d1e47 SC |
1863 | - GET_MODE_SIZE (gpr_mode)); |
1864 | ||
1865 | if (gp_offset < 0 || end_offset < 0) | |
1866 | internal_error | |
ab532386 | 1867 | ("gp_offset (%ld) or end_offset (%ld) is less than zero", |
6b3d1e47 SC |
1868 | (long) gp_offset, (long) end_offset); |
1869 | ||
1870 | else if (gp_offset < 32768) | |
1871 | base_reg_rtx = stack_pointer_rtx, base_offset = 0; | |
1872 | else | |
1873 | { | |
1874 | int regno; | |
1875 | int reg_save_count = 0; | |
b5144086 | 1876 | |
6b3d1e47 SC |
1877 | for (regno = GP_REG_LAST; regno >= GP_REG_FIRST; regno--) |
1878 | if (BITSET_P (mask, regno - GP_REG_FIRST)) reg_save_count += 1; | |
1879 | base_offset = gp_offset - ((reg_save_count - 1) * 4); | |
1880 | base_reg_rtx = iq2000_add_large_offset_to_sp (base_offset); | |
1881 | } | |
1882 | ||
1883 | for (regno = GP_REG_LAST; regno >= GP_REG_FIRST; regno--) | |
1884 | { | |
1885 | if (BITSET_P (mask, regno - GP_REG_FIRST)) | |
1886 | { | |
1887 | rtx reg_rtx; | |
1888 | rtx mem_rtx | |
f1c25d3b KH |
1889 | = gen_rtx_MEM (gpr_mode, |
1890 | gen_rtx_PLUS (Pmode, base_reg_rtx, | |
6b3d1e47 SC |
1891 | GEN_INT (gp_offset - base_offset))); |
1892 | ||
f1c25d3b | 1893 | reg_rtx = gen_rtx_REG (gpr_mode, regno); |
6b3d1e47 SC |
1894 | |
1895 | if (store_p) | |
1896 | iq2000_emit_frame_related_store (mem_rtx, reg_rtx, gp_offset); | |
1897 | else | |
1898 | { | |
1899 | emit_move_insn (reg_rtx, mem_rtx); | |
1900 | } | |
1901 | gp_offset -= GET_MODE_SIZE (gpr_mode); | |
1902 | } | |
1903 | } | |
1904 | } | |
1905 | \f | |
1906 | /* Expand the prologue into a bunch of separate insns. */ | |
1907 | ||
1908 | void | |
b7849684 | 1909 | iq2000_expand_prologue (void) |
6b3d1e47 SC |
1910 | { |
1911 | int regno; | |
1912 | HOST_WIDE_INT tsize; | |
1913 | int last_arg_is_vararg_marker = 0; | |
1914 | tree fndecl = current_function_decl; | |
1915 | tree fntype = TREE_TYPE (fndecl); | |
1916 | tree fnargs = DECL_ARGUMENTS (fndecl); | |
1917 | rtx next_arg_reg; | |
1918 | int i; | |
1919 | tree next_arg; | |
1920 | tree cur_arg; | |
d5cc9181 JR |
1921 | CUMULATIVE_ARGS args_so_far_v; |
1922 | cumulative_args_t args_so_far; | |
6b3d1e47 SC |
1923 | int store_args_on_stack = (iq2000_can_use_return_insn ()); |
1924 | ||
1925 | /* If struct value address is treated as the first argument. */ | |
b5144086 | 1926 | if (aggregate_value_p (DECL_RESULT (fndecl), fndecl) |
ad516a74 | 1927 | && !cfun->returns_pcc_struct |
b5144086 | 1928 | && targetm.calls.struct_value_rtx (TREE_TYPE (fndecl), 1) == 0) |
6b3d1e47 SC |
1929 | { |
1930 | tree type = build_pointer_type (fntype); | |
4c4bde29 AH |
1931 | tree function_result_decl = build_decl (BUILTINS_LOCATION, |
1932 | PARM_DECL, NULL_TREE, type); | |
6b3d1e47 SC |
1933 | |
1934 | DECL_ARG_TYPE (function_result_decl) = type; | |
910ad8de | 1935 | DECL_CHAIN (function_result_decl) = fnargs; |
6b3d1e47 SC |
1936 | fnargs = function_result_decl; |
1937 | } | |
1938 | ||
1939 | /* For arguments passed in registers, find the register number | |
1940 | of the first argument in the variable part of the argument list, | |
1941 | otherwise GP_ARG_LAST+1. Note also if the last argument is | |
1942 | the varargs special argument, and treat it as part of the | |
1943 | variable arguments. | |
1944 | ||
1945 | This is only needed if store_args_on_stack is true. */ | |
d5cc9181 JR |
1946 | INIT_CUMULATIVE_ARGS (args_so_far_v, fntype, NULL_RTX, 0, 0); |
1947 | args_so_far = pack_cumulative_args (&args_so_far_v); | |
6b3d1e47 SC |
1948 | regno = GP_ARG_FIRST; |
1949 | ||
1950 | for (cur_arg = fnargs; cur_arg != 0; cur_arg = next_arg) | |
1951 | { | |
1952 | tree passed_type = DECL_ARG_TYPE (cur_arg); | |
ef4bddc2 | 1953 | machine_mode passed_mode = TYPE_MODE (passed_type); |
6b3d1e47 SC |
1954 | rtx entry_parm; |
1955 | ||
1956 | if (TREE_ADDRESSABLE (passed_type)) | |
1957 | { | |
1958 | passed_type = build_pointer_type (passed_type); | |
1959 | passed_mode = Pmode; | |
1960 | } | |
1961 | ||
6783fdb7 RS |
1962 | function_arg_info arg (passed_type, passed_mode, /*named=*/true); |
1963 | entry_parm = iq2000_function_arg (args_so_far, arg); | |
6b3d1e47 | 1964 | |
6930c98c | 1965 | iq2000_function_arg_advance (args_so_far, arg); |
910ad8de | 1966 | next_arg = DECL_CHAIN (cur_arg); |
6b3d1e47 SC |
1967 | |
1968 | if (entry_parm && store_args_on_stack) | |
1969 | { | |
1970 | if (next_arg == 0 | |
1971 | && DECL_NAME (cur_arg) | |
01512446 JJ |
1972 | && (strcmp (IDENTIFIER_POINTER (DECL_NAME (cur_arg)), |
1973 | "__builtin_va_alist") == 0 | |
1974 | || strcmp (IDENTIFIER_POINTER (DECL_NAME (cur_arg)), | |
1975 | "va_alist") == 0)) | |
6b3d1e47 SC |
1976 | { |
1977 | last_arg_is_vararg_marker = 1; | |
1978 | break; | |
1979 | } | |
1980 | else | |
1981 | { | |
1982 | int words; | |
1983 | ||
292c8018 | 1984 | gcc_assert (GET_CODE (entry_parm) == REG); |
6b3d1e47 | 1985 | |
5b8d96f1 | 1986 | /* Passed in a register, so will get homed automatically. */ |
6b3d1e47 SC |
1987 | if (GET_MODE (entry_parm) == BLKmode) |
1988 | words = (int_size_in_bytes (passed_type) + 3) / 4; | |
1989 | else | |
1990 | words = (GET_MODE_SIZE (GET_MODE (entry_parm)) + 3) / 4; | |
1991 | ||
1992 | regno = REGNO (entry_parm) + words - 1; | |
1993 | } | |
1994 | } | |
1995 | else | |
1996 | { | |
1997 | regno = GP_ARG_LAST+1; | |
1998 | break; | |
1999 | } | |
2000 | } | |
2001 | ||
2002 | /* In order to pass small structures by value in registers we need to | |
2003 | shift the value into the high part of the register. | |
24ef86d7 NF |
2004 | iq2000_unction_arg has encoded a PARALLEL rtx, holding a vector of |
2005 | adjustments to be made as the next_arg_reg variable, so we split up | |
2006 | the insns, and emit them separately. */ | |
6783fdb7 RS |
2007 | next_arg_reg = iq2000_function_arg (args_so_far, |
2008 | function_arg_info::end_marker ()); | |
6b3d1e47 SC |
2009 | if (next_arg_reg != 0 && GET_CODE (next_arg_reg) == PARALLEL) |
2010 | { | |
2011 | rtvec adjust = XVEC (next_arg_reg, 0); | |
2012 | int num = GET_NUM_ELEM (adjust); | |
2013 | ||
2014 | for (i = 0; i < num; i++) | |
2015 | { | |
954c7446 | 2016 | rtx pattern; |
6b3d1e47 SC |
2017 | |
2018 | pattern = RTVEC_ELT (adjust, i); | |
2019 | if (GET_CODE (pattern) != SET | |
2020 | || GET_CODE (SET_SRC (pattern)) != ASHIFT) | |
2021 | abort_with_insn (pattern, "Insn is not a shift"); | |
2022 | PUT_CODE (SET_SRC (pattern), ASHIFTRT); | |
2023 | ||
954c7446 | 2024 | emit_insn (pattern); |
6b3d1e47 SC |
2025 | } |
2026 | } | |
2027 | ||
2028 | tsize = compute_frame_size (get_frame_size ()); | |
2029 | ||
2030 | /* If this function is a varargs function, store any registers that | |
2031 | would normally hold arguments ($4 - $7) on the stack. */ | |
2032 | if (store_args_on_stack | |
f38958e8 | 2033 | && (stdarg_p (fntype) |
6b3d1e47 SC |
2034 | || last_arg_is_vararg_marker)) |
2035 | { | |
2036 | int offset = (regno - GP_ARG_FIRST) * UNITS_PER_WORD; | |
2037 | rtx ptr = stack_pointer_rtx; | |
2038 | ||
2039 | for (; regno <= GP_ARG_LAST; regno++) | |
2040 | { | |
2041 | if (offset != 0) | |
f1c25d3b KH |
2042 | ptr = gen_rtx_PLUS (Pmode, stack_pointer_rtx, GEN_INT (offset)); |
2043 | emit_move_insn (gen_rtx_MEM (gpr_mode, ptr), | |
2044 | gen_rtx_REG (gpr_mode, regno)); | |
6b3d1e47 SC |
2045 | |
2046 | offset += GET_MODE_SIZE (gpr_mode); | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | if (tsize > 0) | |
2051 | { | |
2052 | rtx tsize_rtx = GEN_INT (tsize); | |
6ae94a0b DM |
2053 | rtx adjustment_rtx, dwarf_pattern; |
2054 | rtx_insn *insn; | |
6b3d1e47 SC |
2055 | |
2056 | if (tsize > 32767) | |
2057 | { | |
f1c25d3b | 2058 | adjustment_rtx = gen_rtx_REG (Pmode, IQ2000_TEMP1_REGNUM); |
6b3d1e47 SC |
2059 | emit_move_insn (adjustment_rtx, tsize_rtx); |
2060 | } | |
2061 | else | |
2062 | adjustment_rtx = tsize_rtx; | |
2063 | ||
2064 | insn = emit_insn (gen_subsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
2065 | adjustment_rtx)); | |
2066 | ||
f7df4a84 | 2067 | dwarf_pattern = gen_rtx_SET (stack_pointer_rtx, |
0a81f074 RS |
2068 | plus_constant (Pmode, stack_pointer_rtx, |
2069 | -tsize)); | |
6b3d1e47 SC |
2070 | |
2071 | iq2000_annotate_frame_insn (insn, dwarf_pattern); | |
2072 | ||
2073 | save_restore_insns (1); | |
2074 | ||
2075 | if (frame_pointer_needed) | |
2076 | { | |
6ae94a0b | 2077 | rtx_insn *insn = 0; |
6b3d1e47 SC |
2078 | |
2079 | insn = emit_insn (gen_movsi (hard_frame_pointer_rtx, | |
2080 | stack_pointer_rtx)); | |
2081 | ||
2082 | if (insn) | |
2083 | RTX_FRAME_RELATED_P (insn) = 1; | |
2084 | } | |
2085 | } | |
2086 | ||
ed1332ee NC |
2087 | if (flag_stack_usage_info) |
2088 | current_function_static_stack_size = cfun->machine->total_size; | |
2089 | ||
6b3d1e47 SC |
2090 | emit_insn (gen_blockage ()); |
2091 | } | |
2092 | \f | |
2093 | /* Expand the epilogue into a bunch of separate insns. */ | |
2094 | ||
2095 | void | |
b7849684 | 2096 | iq2000_expand_epilogue (void) |
6b3d1e47 | 2097 | { |
b5144086 | 2098 | HOST_WIDE_INT tsize = cfun->machine->total_size; |
6b3d1e47 SC |
2099 | rtx tsize_rtx = GEN_INT (tsize); |
2100 | rtx tmp_rtx = (rtx)0; | |
2101 | ||
2102 | if (iq2000_can_use_return_insn ()) | |
2103 | { | |
9054261d | 2104 | emit_jump_insn (gen_return ()); |
6b3d1e47 SC |
2105 | return; |
2106 | } | |
2107 | ||
2108 | if (tsize > 32767) | |
2109 | { | |
2110 | tmp_rtx = gen_rtx_REG (Pmode, IQ2000_TEMP1_REGNUM); | |
2111 | emit_move_insn (tmp_rtx, tsize_rtx); | |
2112 | tsize_rtx = tmp_rtx; | |
2113 | } | |
2114 | ||
2115 | if (tsize > 0) | |
2116 | { | |
2117 | if (frame_pointer_needed) | |
2118 | { | |
2119 | emit_insn (gen_blockage ()); | |
2120 | ||
2121 | emit_insn (gen_movsi (stack_pointer_rtx, hard_frame_pointer_rtx)); | |
2122 | } | |
2123 | ||
2124 | save_restore_insns (0); | |
2125 | ||
e3b5732b | 2126 | if (crtl->calls_eh_return) |
6b3d1e47 SC |
2127 | { |
2128 | rtx eh_ofs = EH_RETURN_STACKADJ_RTX; | |
2129 | emit_insn (gen_addsi3 (eh_ofs, eh_ofs, tsize_rtx)); | |
2130 | tsize_rtx = eh_ofs; | |
2131 | } | |
2132 | ||
2133 | emit_insn (gen_blockage ()); | |
2134 | ||
e3b5732b | 2135 | if (tsize != 0 || crtl->calls_eh_return) |
6b3d1e47 SC |
2136 | { |
2137 | emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
2138 | tsize_rtx)); | |
2139 | } | |
2140 | } | |
2141 | ||
e3b5732b | 2142 | if (crtl->calls_eh_return) |
6b3d1e47 SC |
2143 | { |
2144 | /* Perform the additional bump for __throw. */ | |
f1c25d3b | 2145 | emit_move_insn (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM), |
6b3d1e47 | 2146 | stack_pointer_rtx); |
c41c1387 | 2147 | emit_use (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM)); |
6b3d1e47 SC |
2148 | emit_jump_insn (gen_eh_return_internal ()); |
2149 | } | |
2150 | else | |
f1c25d3b | 2151 | emit_jump_insn (gen_return_internal (gen_rtx_REG (Pmode, |
6b3d1e47 SC |
2152 | GP_REG_FIRST + 31))); |
2153 | } | |
2154 | ||
2155 | void | |
b7849684 | 2156 | iq2000_expand_eh_return (rtx address) |
6b3d1e47 | 2157 | { |
b5144086 | 2158 | HOST_WIDE_INT gp_offset = cfun->machine->gp_sp_offset; |
6b3d1e47 SC |
2159 | rtx scratch; |
2160 | ||
0a81f074 | 2161 | scratch = plus_constant (Pmode, stack_pointer_rtx, gp_offset); |
6b3d1e47 SC |
2162 | emit_move_insn (gen_rtx_MEM (GET_MODE (address), scratch), address); |
2163 | } | |
2164 | \f | |
2165 | /* Return nonzero if this function is known to have a null epilogue. | |
2166 | This allows the optimizer to omit jumps to jumps if no stack | |
2167 | was created. */ | |
2168 | ||
2169 | int | |
b7849684 | 2170 | iq2000_can_use_return_insn (void) |
6b3d1e47 SC |
2171 | { |
2172 | if (! reload_completed) | |
2173 | return 0; | |
2174 | ||
6fb5fa3c | 2175 | if (df_regs_ever_live_p (31) || profile_flag) |
6b3d1e47 SC |
2176 | return 0; |
2177 | ||
b5144086 SC |
2178 | if (cfun->machine->initialized) |
2179 | return cfun->machine->total_size == 0; | |
6b3d1e47 SC |
2180 | |
2181 | return compute_frame_size (get_frame_size ()) == 0; | |
2182 | } | |
2183 | \f | |
6b3d1e47 SC |
2184 | /* Choose the section to use for the constant rtx expression X that has |
2185 | mode MODE. */ | |
2186 | ||
d6b5193b | 2187 | static section * |
ef4bddc2 | 2188 | iq2000_select_rtx_section (machine_mode mode, rtx x ATTRIBUTE_UNUSED, |
b7849684 | 2189 | unsigned HOST_WIDE_INT align) |
6b3d1e47 SC |
2190 | { |
2191 | /* For embedded applications, always put constants in read-only data, | |
2192 | in order to reduce RAM usage. */ | |
d6b5193b | 2193 | return mergeable_constant_section (mode, align, 0); |
6b3d1e47 SC |
2194 | } |
2195 | ||
6b3d1e47 SC |
2196 | /* Return register to use for a function return value with VALTYPE for function |
2197 | FUNC. */ | |
2198 | ||
7ae62237 AS |
2199 | static rtx |
2200 | iq2000_function_value (const_tree valtype, | |
2201 | const_tree fn_decl_or_type, | |
2202 | bool outgoing ATTRIBUTE_UNUSED) | |
6b3d1e47 SC |
2203 | { |
2204 | int reg = GP_RETURN; | |
ef4bddc2 | 2205 | machine_mode mode = TYPE_MODE (valtype); |
8df83eae | 2206 | int unsignedp = TYPE_UNSIGNED (valtype); |
954c7446 | 2207 | const_tree func = fn_decl_or_type; |
7ae62237 AS |
2208 | |
2209 | if (fn_decl_or_type | |
2210 | && !DECL_P (fn_decl_or_type)) | |
2211 | fn_decl_or_type = NULL; | |
6b3d1e47 | 2212 | |
cde0f3fd PB |
2213 | /* Since we promote return types, we must promote the mode here too. */ |
2214 | mode = promote_function_mode (valtype, mode, &unsignedp, func, 1); | |
6b3d1e47 SC |
2215 | |
2216 | return gen_rtx_REG (mode, reg); | |
2217 | } | |
7ae62237 AS |
2218 | |
2219 | /* Worker function for TARGET_LIBCALL_VALUE. */ | |
2220 | ||
2221 | static rtx | |
ef4bddc2 | 2222 | iq2000_libcall_value (machine_mode mode, const_rtx fun ATTRIBUTE_UNUSED) |
7ae62237 AS |
2223 | { |
2224 | return gen_rtx_REG (((GET_MODE_CLASS (mode) != MODE_INT | |
2225 | || GET_MODE_SIZE (mode) >= 4) | |
2226 | ? mode : SImode), | |
2227 | GP_RETURN); | |
2228 | } | |
2229 | ||
2230 | /* Worker function for FUNCTION_VALUE_REGNO_P. | |
2231 | ||
2232 | On the IQ2000, R2 and R3 are the only register thus used. */ | |
2233 | ||
2234 | bool | |
2235 | iq2000_function_value_regno_p (const unsigned int regno) | |
2236 | { | |
2237 | return (regno == GP_RETURN); | |
2238 | } | |
2239 | ||
6b3d1e47 | 2240 | \f |
8cd5a4e0 | 2241 | /* Return true when an argument must be passed by reference. */ |
6b3d1e47 | 2242 | |
8cd5a4e0 | 2243 | static bool |
52090e4d RS |
2244 | iq2000_pass_by_reference (cumulative_args_t cum_v, |
2245 | const function_arg_info &arg) | |
6b3d1e47 | 2246 | { |
d5cc9181 | 2247 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
6b3d1e47 SC |
2248 | int size; |
2249 | ||
2250 | /* We must pass by reference if we would be both passing in registers | |
2251 | and the stack. This is because any subsequent partial arg would be | |
2252 | handled incorrectly in this case. */ | |
0ffef200 | 2253 | if (cum && targetm.calls.must_pass_in_stack (arg)) |
6b3d1e47 SC |
2254 | { |
2255 | /* Don't pass the actual CUM to FUNCTION_ARG, because we would | |
2256 | get double copies of any offsets generated for small structs | |
2257 | passed in registers. */ | |
2258 | CUMULATIVE_ARGS temp; | |
b5144086 | 2259 | |
6b3d1e47 | 2260 | temp = *cum; |
6783fdb7 | 2261 | if (iq2000_function_arg (pack_cumulative_args (&temp), arg) != 0) |
6b3d1e47 SC |
2262 | return 1; |
2263 | } | |
2264 | ||
52090e4d | 2265 | if (arg.type == NULL_TREE || arg.mode == DImode || arg.mode == DFmode) |
6b3d1e47 SC |
2266 | return 0; |
2267 | ||
52090e4d | 2268 | size = int_size_in_bytes (arg.type); |
6b3d1e47 SC |
2269 | return size == -1 || size > UNITS_PER_WORD; |
2270 | } | |
2271 | ||
2272 | /* Return the length of INSN. LENGTH is the initial length computed by | |
2273 | attributes in the machine-description file. */ | |
2274 | ||
2275 | int | |
6ae94a0b | 2276 | iq2000_adjust_insn_length (rtx_insn *insn, int length) |
6b3d1e47 SC |
2277 | { |
2278 | /* A unconditional jump has an unfilled delay slot if it is not part | |
b5144086 | 2279 | of a sequence. A conditional jump normally has a delay slot. */ |
6b3d1e47 | 2280 | if (simplejump_p (insn) |
b64925dc SB |
2281 | || ( (JUMP_P (insn) |
2282 | || CALL_P (insn)))) | |
6b3d1e47 SC |
2283 | length += 4; |
2284 | ||
2285 | return length; | |
2286 | } | |
2287 | ||
2288 | /* Output assembly instructions to perform a conditional branch. | |
2289 | ||
2290 | INSN is the branch instruction. OPERANDS[0] is the condition. | |
2291 | OPERANDS[1] is the target of the branch. OPERANDS[2] is the target | |
2292 | of the first operand to the condition. If TWO_OPERANDS_P is | |
4375e090 | 2293 | nonzero the comparison takes two operands; OPERANDS[3] will be the |
6b3d1e47 SC |
2294 | second operand. |
2295 | ||
4375e090 KH |
2296 | If INVERTED_P is nonzero we are to branch if the condition does |
2297 | not hold. If FLOAT_P is nonzero this is a floating-point comparison. | |
6b3d1e47 SC |
2298 | |
2299 | LENGTH is the length (in bytes) of the sequence we are to generate. | |
2300 | That tells us whether to generate a simple conditional branch, or a | |
2301 | reversed conditional branch around a `jr' instruction. */ | |
2302 | ||
2303 | char * | |
6ae94a0b DM |
2304 | iq2000_output_conditional_branch (rtx_insn *insn, rtx * operands, |
2305 | int two_operands_p, int float_p, | |
2306 | int inverted_p, int length) | |
6b3d1e47 SC |
2307 | { |
2308 | static char buffer[200]; | |
2309 | /* The kind of comparison we are doing. */ | |
2310 | enum rtx_code code = GET_CODE (operands[0]); | |
5b8d96f1 | 2311 | /* Nonzero if the opcode for the comparison needs a `z' indicating |
2cac216b | 2312 | that it is a comparison against zero. */ |
6b3d1e47 SC |
2313 | int need_z_p; |
2314 | /* A string to use in the assembly output to represent the first | |
2315 | operand. */ | |
2316 | const char *op1 = "%z2"; | |
2317 | /* A string to use in the assembly output to represent the second | |
2318 | operand. Use the hard-wired zero register if there's no second | |
2319 | operand. */ | |
2320 | const char *op2 = (two_operands_p ? ",%z3" : ",%."); | |
2321 | /* The operand-printing string for the comparison. */ | |
2322 | const char *comp = (float_p ? "%F0" : "%C0"); | |
2323 | /* The operand-printing string for the inverted comparison. */ | |
2324 | const char *inverted_comp = (float_p ? "%W0" : "%N0"); | |
2325 | ||
b5144086 | 2326 | /* Likely variants of each branch instruction annul the instruction |
6b3d1e47 SC |
2327 | in the delay slot if the branch is not taken. */ |
2328 | iq2000_branch_likely = (final_sequence && INSN_ANNULLED_BRANCH_P (insn)); | |
2329 | ||
2330 | if (!two_operands_p) | |
2331 | { | |
2332 | /* To compute whether than A > B, for example, we normally | |
2333 | subtract B from A and then look at the sign bit. But, if we | |
2334 | are doing an unsigned comparison, and B is zero, we don't | |
2335 | have to do the subtraction. Instead, we can just check to | |
4375e090 | 2336 | see if A is nonzero. Thus, we change the CODE here to |
6b3d1e47 SC |
2337 | reflect the simpler comparison operation. */ |
2338 | switch (code) | |
2339 | { | |
2340 | case GTU: | |
2341 | code = NE; | |
2342 | break; | |
2343 | ||
2344 | case LEU: | |
2345 | code = EQ; | |
2346 | break; | |
2347 | ||
2348 | case GEU: | |
2349 | /* A condition which will always be true. */ | |
2350 | code = EQ; | |
2351 | op1 = "%."; | |
2352 | break; | |
2353 | ||
2354 | case LTU: | |
2355 | /* A condition which will always be false. */ | |
2356 | code = NE; | |
2357 | op1 = "%."; | |
2358 | break; | |
2359 | ||
2360 | default: | |
2361 | /* Not a special case. */ | |
2362 | break; | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | /* Relative comparisons are always done against zero. But | |
2367 | equality comparisons are done between two operands, and therefore | |
2368 | do not require a `z' in the assembly language output. */ | |
2369 | need_z_p = (!float_p && code != EQ && code != NE); | |
2370 | /* For comparisons against zero, the zero is not provided | |
2371 | explicitly. */ | |
2372 | if (need_z_p) | |
2373 | op2 = ""; | |
2374 | ||
2375 | /* Begin by terminating the buffer. That way we can always use | |
2376 | strcat to add to it. */ | |
2377 | buffer[0] = '\0'; | |
2378 | ||
2379 | switch (length) | |
2380 | { | |
2381 | case 4: | |
2382 | case 8: | |
2383 | /* Just a simple conditional branch. */ | |
2384 | if (float_p) | |
2385 | sprintf (buffer, "b%s%%?\t%%Z2%%1", | |
2386 | inverted_p ? inverted_comp : comp); | |
2387 | else | |
2388 | sprintf (buffer, "b%s%s%%?\t%s%s,%%1", | |
2389 | inverted_p ? inverted_comp : comp, | |
2390 | need_z_p ? "z" : "", | |
2391 | op1, | |
2392 | op2); | |
2393 | return buffer; | |
2394 | ||
2395 | case 12: | |
2396 | case 16: | |
2397 | { | |
2398 | /* Generate a reversed conditional branch around ` j' | |
2399 | instruction: | |
2400 | ||
2401 | .set noreorder | |
2402 | .set nomacro | |
2403 | bc l | |
2404 | nop | |
2405 | j target | |
2406 | .set macro | |
2407 | .set reorder | |
2408 | l: | |
2409 | ||
2410 | Because we have to jump four bytes *past* the following | |
2411 | instruction if this branch was annulled, we can't just use | |
2412 | a label, as in the picture above; there's no way to put the | |
2413 | label after the next instruction, as the assembler does not | |
2414 | accept `.L+4' as the target of a branch. (We can't just | |
2415 | wait until the next instruction is output; it might be a | |
2416 | macro and take up more than four bytes. Once again, we see | |
2417 | why we want to eliminate macros.) | |
2418 | ||
2419 | If the branch is annulled, we jump four more bytes that we | |
2420 | would otherwise; that way we skip the annulled instruction | |
2421 | in the delay slot. */ | |
2422 | ||
2423 | const char *target | |
2424 | = ((iq2000_branch_likely || length == 16) ? ".+16" : ".+12"); | |
2425 | char *c; | |
2426 | ||
2427 | c = strchr (buffer, '\0'); | |
59b9a953 | 2428 | /* Generate the reversed comparison. This takes four |
6b3d1e47 SC |
2429 | bytes. */ |
2430 | if (float_p) | |
2431 | sprintf (c, "b%s\t%%Z2%s", | |
2432 | inverted_p ? comp : inverted_comp, | |
2433 | target); | |
2434 | else | |
2435 | sprintf (c, "b%s%s\t%s%s,%s", | |
2436 | inverted_p ? comp : inverted_comp, | |
2437 | need_z_p ? "z" : "", | |
2438 | op1, | |
2439 | op2, | |
2440 | target); | |
2441 | strcat (c, "\n\tnop\n\tj\t%1"); | |
2442 | if (length == 16) | |
2443 | /* The delay slot was unfilled. Since we're inside | |
2444 | .noreorder, the assembler will not fill in the NOP for | |
2445 | us, so we must do it ourselves. */ | |
2446 | strcat (buffer, "\n\tnop"); | |
2447 | return buffer; | |
2448 | } | |
2449 | ||
2450 | default: | |
292c8018 | 2451 | gcc_unreachable (); |
6b3d1e47 SC |
2452 | } |
2453 | ||
2454 | /* NOTREACHED */ | |
2455 | return 0; | |
2456 | } | |
2457 | ||
6e34d3a3 | 2458 | #define def_builtin(NAME, TYPE, CODE) \ |
c79efc4d RÁE |
2459 | add_builtin_function ((NAME), (TYPE), (CODE), BUILT_IN_MD, \ |
2460 | NULL, NULL_TREE) | |
6b3d1e47 | 2461 | |
b5144086 | 2462 | static void |
b7849684 | 2463 | iq2000_init_builtins (void) |
6b3d1e47 | 2464 | { |
6b3d1e47 SC |
2465 | tree void_ftype, void_ftype_int, void_ftype_int_int; |
2466 | tree void_ftype_int_int_int; | |
2467 | tree int_ftype_int, int_ftype_int_int, int_ftype_int_int_int; | |
2468 | tree int_ftype_int_int_int_int; | |
2469 | ||
2470 | /* func () */ | |
2471 | void_ftype | |
baeec5f2 | 2472 | = build_function_type_list (void_type_node, NULL_TREE); |
6b3d1e47 SC |
2473 | |
2474 | /* func (int) */ | |
2475 | void_ftype_int | |
baeec5f2 | 2476 | = build_function_type_list (void_type_node, integer_type_node, NULL_TREE); |
6b3d1e47 SC |
2477 | |
2478 | /* void func (int, int) */ | |
2479 | void_ftype_int_int | |
baeec5f2 NF |
2480 | = build_function_type_list (void_type_node, |
2481 | integer_type_node, | |
2482 | integer_type_node, | |
2483 | NULL_TREE); | |
6b3d1e47 SC |
2484 | |
2485 | /* int func (int) */ | |
2486 | int_ftype_int | |
baeec5f2 NF |
2487 | = build_function_type_list (integer_type_node, |
2488 | integer_type_node, NULL_TREE); | |
6b3d1e47 SC |
2489 | |
2490 | /* int func (int, int) */ | |
2491 | int_ftype_int_int | |
baeec5f2 NF |
2492 | = build_function_type_list (integer_type_node, |
2493 | integer_type_node, | |
2494 | integer_type_node, | |
2495 | NULL_TREE); | |
6b3d1e47 SC |
2496 | |
2497 | /* void func (int, int, int) */ | |
baeec5f2 NF |
2498 | void_ftype_int_int_int |
2499 | = build_function_type_list (void_type_node, | |
2500 | integer_type_node, | |
2501 | integer_type_node, | |
2502 | integer_type_node, | |
2503 | NULL_TREE); | |
6b3d1e47 SC |
2504 | |
2505 | /* int func (int, int, int) */ | |
2506 | int_ftype_int_int_int | |
baeec5f2 NF |
2507 | = build_function_type_list (integer_type_node, |
2508 | integer_type_node, | |
2509 | integer_type_node, | |
2510 | integer_type_node, | |
2511 | NULL_TREE); | |
6b3d1e47 SC |
2512 | |
2513 | /* int func (int, int, int, int) */ | |
2514 | int_ftype_int_int_int_int | |
baeec5f2 NF |
2515 | = build_function_type_list (integer_type_node, |
2516 | integer_type_node, | |
2517 | integer_type_node, | |
2518 | integer_type_node, | |
2519 | integer_type_node, | |
2520 | NULL_TREE); | |
6b3d1e47 SC |
2521 | |
2522 | def_builtin ("__builtin_ado16", int_ftype_int_int, IQ2000_BUILTIN_ADO16); | |
2523 | def_builtin ("__builtin_ram", int_ftype_int_int_int_int, IQ2000_BUILTIN_RAM); | |
2524 | def_builtin ("__builtin_chkhdr", void_ftype_int_int, IQ2000_BUILTIN_CHKHDR); | |
2525 | def_builtin ("__builtin_pkrl", void_ftype_int_int, IQ2000_BUILTIN_PKRL); | |
2526 | def_builtin ("__builtin_cfc0", int_ftype_int, IQ2000_BUILTIN_CFC0); | |
2527 | def_builtin ("__builtin_cfc1", int_ftype_int, IQ2000_BUILTIN_CFC1); | |
2528 | def_builtin ("__builtin_cfc2", int_ftype_int, IQ2000_BUILTIN_CFC2); | |
2529 | def_builtin ("__builtin_cfc3", int_ftype_int, IQ2000_BUILTIN_CFC3); | |
2530 | def_builtin ("__builtin_ctc0", void_ftype_int_int, IQ2000_BUILTIN_CTC0); | |
2531 | def_builtin ("__builtin_ctc1", void_ftype_int_int, IQ2000_BUILTIN_CTC1); | |
2532 | def_builtin ("__builtin_ctc2", void_ftype_int_int, IQ2000_BUILTIN_CTC2); | |
2533 | def_builtin ("__builtin_ctc3", void_ftype_int_int, IQ2000_BUILTIN_CTC3); | |
2534 | def_builtin ("__builtin_mfc0", int_ftype_int, IQ2000_BUILTIN_MFC0); | |
2535 | def_builtin ("__builtin_mfc1", int_ftype_int, IQ2000_BUILTIN_MFC1); | |
2536 | def_builtin ("__builtin_mfc2", int_ftype_int, IQ2000_BUILTIN_MFC2); | |
2537 | def_builtin ("__builtin_mfc3", int_ftype_int, IQ2000_BUILTIN_MFC3); | |
2538 | def_builtin ("__builtin_mtc0", void_ftype_int_int, IQ2000_BUILTIN_MTC0); | |
2539 | def_builtin ("__builtin_mtc1", void_ftype_int_int, IQ2000_BUILTIN_MTC1); | |
2540 | def_builtin ("__builtin_mtc2", void_ftype_int_int, IQ2000_BUILTIN_MTC2); | |
2541 | def_builtin ("__builtin_mtc3", void_ftype_int_int, IQ2000_BUILTIN_MTC3); | |
2542 | def_builtin ("__builtin_lur", void_ftype_int_int, IQ2000_BUILTIN_LUR); | |
2543 | def_builtin ("__builtin_rb", void_ftype_int_int, IQ2000_BUILTIN_RB); | |
2544 | def_builtin ("__builtin_rx", void_ftype_int_int, IQ2000_BUILTIN_RX); | |
2545 | def_builtin ("__builtin_srrd", void_ftype_int, IQ2000_BUILTIN_SRRD); | |
2546 | def_builtin ("__builtin_srwr", void_ftype_int_int, IQ2000_BUILTIN_SRWR); | |
2547 | def_builtin ("__builtin_wb", void_ftype_int_int, IQ2000_BUILTIN_WB); | |
2548 | def_builtin ("__builtin_wx", void_ftype_int_int, IQ2000_BUILTIN_WX); | |
2549 | def_builtin ("__builtin_luc32l", void_ftype_int_int, IQ2000_BUILTIN_LUC32L); | |
2550 | def_builtin ("__builtin_luc64", void_ftype_int_int, IQ2000_BUILTIN_LUC64); | |
2551 | def_builtin ("__builtin_luc64l", void_ftype_int_int, IQ2000_BUILTIN_LUC64L); | |
2552 | def_builtin ("__builtin_luk", void_ftype_int_int, IQ2000_BUILTIN_LUK); | |
2553 | def_builtin ("__builtin_lulck", void_ftype_int, IQ2000_BUILTIN_LULCK); | |
2554 | def_builtin ("__builtin_lum32", void_ftype_int_int, IQ2000_BUILTIN_LUM32); | |
2555 | def_builtin ("__builtin_lum32l", void_ftype_int_int, IQ2000_BUILTIN_LUM32L); | |
2556 | def_builtin ("__builtin_lum64", void_ftype_int_int, IQ2000_BUILTIN_LUM64); | |
2557 | def_builtin ("__builtin_lum64l", void_ftype_int_int, IQ2000_BUILTIN_LUM64L); | |
2558 | def_builtin ("__builtin_lurl", void_ftype_int_int, IQ2000_BUILTIN_LURL); | |
2559 | def_builtin ("__builtin_mrgb", int_ftype_int_int_int, IQ2000_BUILTIN_MRGB); | |
2560 | def_builtin ("__builtin_srrdl", void_ftype_int, IQ2000_BUILTIN_SRRDL); | |
2561 | def_builtin ("__builtin_srulck", void_ftype_int, IQ2000_BUILTIN_SRULCK); | |
2562 | def_builtin ("__builtin_srwru", void_ftype_int_int, IQ2000_BUILTIN_SRWRU); | |
2563 | def_builtin ("__builtin_trapqfl", void_ftype, IQ2000_BUILTIN_TRAPQFL); | |
2564 | def_builtin ("__builtin_trapqne", void_ftype, IQ2000_BUILTIN_TRAPQNE); | |
2565 | def_builtin ("__builtin_traprel", void_ftype_int, IQ2000_BUILTIN_TRAPREL); | |
2566 | def_builtin ("__builtin_wbu", void_ftype_int_int_int, IQ2000_BUILTIN_WBU); | |
2567 | def_builtin ("__builtin_syscall", void_ftype, IQ2000_BUILTIN_SYSCALL); | |
2568 | } | |
2569 | ||
5039610b | 2570 | /* Builtin for ICODE having ARGCOUNT args in EXP where each arg |
b5144086 | 2571 | has an rtx CODE. */ |
6b3d1e47 SC |
2572 | |
2573 | static rtx | |
5039610b | 2574 | expand_one_builtin (enum insn_code icode, rtx target, tree exp, |
b7849684 | 2575 | enum rtx_code *code, int argcount) |
6b3d1e47 SC |
2576 | { |
2577 | rtx pat; | |
2578 | tree arg [5]; | |
2579 | rtx op [5]; | |
ef4bddc2 | 2580 | machine_mode mode [5]; |
6b3d1e47 SC |
2581 | int i; |
2582 | ||
2583 | mode[0] = insn_data[icode].operand[0].mode; | |
2584 | for (i = 0; i < argcount; i++) | |
2585 | { | |
5039610b | 2586 | arg[i] = CALL_EXPR_ARG (exp, i); |
954c7446 | 2587 | op[i] = expand_normal (arg[i]); |
6b3d1e47 SC |
2588 | mode[i] = insn_data[icode].operand[i].mode; |
2589 | if (code[i] == CONST_INT && GET_CODE (op[i]) != CONST_INT) | |
9e637a26 | 2590 | error ("argument %qd is not a constant", i + 1); |
6b3d1e47 SC |
2591 | if (code[i] == REG |
2592 | && ! (*insn_data[icode].operand[i].predicate) (op[i], mode[i])) | |
2593 | op[i] = copy_to_mode_reg (mode[i], op[i]); | |
2594 | } | |
2595 | ||
2596 | if (insn_data[icode].operand[0].constraint[0] == '=') | |
2597 | { | |
2598 | if (target == 0 | |
2599 | || GET_MODE (target) != mode[0] | |
2600 | || ! (*insn_data[icode].operand[0].predicate) (target, mode[0])) | |
2601 | target = gen_reg_rtx (mode[0]); | |
2602 | } | |
2603 | else | |
2604 | target = 0; | |
2605 | ||
2606 | switch (argcount) | |
2607 | { | |
2608 | case 0: | |
2609 | pat = GEN_FCN (icode) (target); | |
4b592619 | 2610 | break; |
6b3d1e47 SC |
2611 | case 1: |
2612 | if (target) | |
2613 | pat = GEN_FCN (icode) (target, op[0]); | |
2614 | else | |
2615 | pat = GEN_FCN (icode) (op[0]); | |
2616 | break; | |
2617 | case 2: | |
2618 | if (target) | |
2619 | pat = GEN_FCN (icode) (target, op[0], op[1]); | |
2620 | else | |
2621 | pat = GEN_FCN (icode) (op[0], op[1]); | |
2622 | break; | |
2623 | case 3: | |
2624 | if (target) | |
2625 | pat = GEN_FCN (icode) (target, op[0], op[1], op[2]); | |
2626 | else | |
2627 | pat = GEN_FCN (icode) (op[0], op[1], op[2]); | |
2628 | break; | |
2629 | case 4: | |
2630 | if (target) | |
2631 | pat = GEN_FCN (icode) (target, op[0], op[1], op[2], op[3]); | |
2632 | else | |
2633 | pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3]); | |
2634 | break; | |
2635 | default: | |
292c8018 | 2636 | gcc_unreachable (); |
6b3d1e47 SC |
2637 | } |
2638 | ||
2639 | if (! pat) | |
2640 | return 0; | |
2641 | emit_insn (pat); | |
2642 | return target; | |
2643 | } | |
2644 | ||
2645 | /* Expand an expression EXP that calls a built-in function, | |
2646 | with result going to TARGET if that's convenient | |
2647 | (and in mode MODE if that's convenient). | |
2648 | SUBTARGET may be used as the target for computing one of EXP's operands. | |
2649 | IGNORE is nonzero if the value is to be ignored. */ | |
2650 | ||
b5144086 | 2651 | static rtx |
b7849684 | 2652 | iq2000_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED, |
ef4bddc2 | 2653 | machine_mode mode ATTRIBUTE_UNUSED, |
b7849684 | 2654 | int ignore ATTRIBUTE_UNUSED) |
6b3d1e47 | 2655 | { |
5039610b | 2656 | tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0); |
4d732405 | 2657 | int fcode = DECL_MD_FUNCTION_CODE (fndecl); |
6b3d1e47 SC |
2658 | enum rtx_code code [5]; |
2659 | ||
2660 | code[0] = REG; | |
2661 | code[1] = REG; | |
2662 | code[2] = REG; | |
2663 | code[3] = REG; | |
2664 | code[4] = REG; | |
2665 | switch (fcode) | |
2666 | { | |
2667 | default: | |
2668 | break; | |
2669 | ||
2670 | case IQ2000_BUILTIN_ADO16: | |
5039610b | 2671 | return expand_one_builtin (CODE_FOR_ado16, target, exp, code, 2); |
6b3d1e47 SC |
2672 | |
2673 | case IQ2000_BUILTIN_RAM: | |
2674 | code[1] = CONST_INT; | |
2675 | code[2] = CONST_INT; | |
2676 | code[3] = CONST_INT; | |
5039610b | 2677 | return expand_one_builtin (CODE_FOR_ram, target, exp, code, 4); |
6b3d1e47 SC |
2678 | |
2679 | case IQ2000_BUILTIN_CHKHDR: | |
5039610b | 2680 | return expand_one_builtin (CODE_FOR_chkhdr, target, exp, code, 2); |
6b3d1e47 SC |
2681 | |
2682 | case IQ2000_BUILTIN_PKRL: | |
5039610b | 2683 | return expand_one_builtin (CODE_FOR_pkrl, target, exp, code, 2); |
6b3d1e47 SC |
2684 | |
2685 | case IQ2000_BUILTIN_CFC0: | |
2686 | code[0] = CONST_INT; | |
5039610b | 2687 | return expand_one_builtin (CODE_FOR_cfc0, target, exp, code, 1); |
6b3d1e47 SC |
2688 | |
2689 | case IQ2000_BUILTIN_CFC1: | |
2690 | code[0] = CONST_INT; | |
5039610b | 2691 | return expand_one_builtin (CODE_FOR_cfc1, target, exp, code, 1); |
6b3d1e47 SC |
2692 | |
2693 | case IQ2000_BUILTIN_CFC2: | |
2694 | code[0] = CONST_INT; | |
5039610b | 2695 | return expand_one_builtin (CODE_FOR_cfc2, target, exp, code, 1); |
6b3d1e47 SC |
2696 | |
2697 | case IQ2000_BUILTIN_CFC3: | |
2698 | code[0] = CONST_INT; | |
5039610b | 2699 | return expand_one_builtin (CODE_FOR_cfc3, target, exp, code, 1); |
6b3d1e47 SC |
2700 | |
2701 | case IQ2000_BUILTIN_CTC0: | |
2702 | code[1] = CONST_INT; | |
5039610b | 2703 | return expand_one_builtin (CODE_FOR_ctc0, target, exp, code, 2); |
6b3d1e47 SC |
2704 | |
2705 | case IQ2000_BUILTIN_CTC1: | |
2706 | code[1] = CONST_INT; | |
5039610b | 2707 | return expand_one_builtin (CODE_FOR_ctc1, target, exp, code, 2); |
6b3d1e47 SC |
2708 | |
2709 | case IQ2000_BUILTIN_CTC2: | |
2710 | code[1] = CONST_INT; | |
5039610b | 2711 | return expand_one_builtin (CODE_FOR_ctc2, target, exp, code, 2); |
6b3d1e47 SC |
2712 | |
2713 | case IQ2000_BUILTIN_CTC3: | |
2714 | code[1] = CONST_INT; | |
5039610b | 2715 | return expand_one_builtin (CODE_FOR_ctc3, target, exp, code, 2); |
6b3d1e47 SC |
2716 | |
2717 | case IQ2000_BUILTIN_MFC0: | |
2718 | code[0] = CONST_INT; | |
5039610b | 2719 | return expand_one_builtin (CODE_FOR_mfc0, target, exp, code, 1); |
6b3d1e47 SC |
2720 | |
2721 | case IQ2000_BUILTIN_MFC1: | |
2722 | code[0] = CONST_INT; | |
5039610b | 2723 | return expand_one_builtin (CODE_FOR_mfc1, target, exp, code, 1); |
6b3d1e47 SC |
2724 | |
2725 | case IQ2000_BUILTIN_MFC2: | |
2726 | code[0] = CONST_INT; | |
5039610b | 2727 | return expand_one_builtin (CODE_FOR_mfc2, target, exp, code, 1); |
6b3d1e47 SC |
2728 | |
2729 | case IQ2000_BUILTIN_MFC3: | |
2730 | code[0] = CONST_INT; | |
5039610b | 2731 | return expand_one_builtin (CODE_FOR_mfc3, target, exp, code, 1); |
6b3d1e47 SC |
2732 | |
2733 | case IQ2000_BUILTIN_MTC0: | |
2734 | code[1] = CONST_INT; | |
5039610b | 2735 | return expand_one_builtin (CODE_FOR_mtc0, target, exp, code, 2); |
6b3d1e47 SC |
2736 | |
2737 | case IQ2000_BUILTIN_MTC1: | |
2738 | code[1] = CONST_INT; | |
5039610b | 2739 | return expand_one_builtin (CODE_FOR_mtc1, target, exp, code, 2); |
6b3d1e47 SC |
2740 | |
2741 | case IQ2000_BUILTIN_MTC2: | |
2742 | code[1] = CONST_INT; | |
5039610b | 2743 | return expand_one_builtin (CODE_FOR_mtc2, target, exp, code, 2); |
6b3d1e47 SC |
2744 | |
2745 | case IQ2000_BUILTIN_MTC3: | |
2746 | code[1] = CONST_INT; | |
5039610b | 2747 | return expand_one_builtin (CODE_FOR_mtc3, target, exp, code, 2); |
6b3d1e47 SC |
2748 | |
2749 | case IQ2000_BUILTIN_LUR: | |
5039610b | 2750 | return expand_one_builtin (CODE_FOR_lur, target, exp, code, 2); |
6b3d1e47 SC |
2751 | |
2752 | case IQ2000_BUILTIN_RB: | |
5039610b | 2753 | return expand_one_builtin (CODE_FOR_rb, target, exp, code, 2); |
6b3d1e47 SC |
2754 | |
2755 | case IQ2000_BUILTIN_RX: | |
5039610b | 2756 | return expand_one_builtin (CODE_FOR_rx, target, exp, code, 2); |
6b3d1e47 SC |
2757 | |
2758 | case IQ2000_BUILTIN_SRRD: | |
5039610b | 2759 | return expand_one_builtin (CODE_FOR_srrd, target, exp, code, 1); |
6b3d1e47 SC |
2760 | |
2761 | case IQ2000_BUILTIN_SRWR: | |
5039610b | 2762 | return expand_one_builtin (CODE_FOR_srwr, target, exp, code, 2); |
6b3d1e47 SC |
2763 | |
2764 | case IQ2000_BUILTIN_WB: | |
5039610b | 2765 | return expand_one_builtin (CODE_FOR_wb, target, exp, code, 2); |
6b3d1e47 SC |
2766 | |
2767 | case IQ2000_BUILTIN_WX: | |
5039610b | 2768 | return expand_one_builtin (CODE_FOR_wx, target, exp, code, 2); |
6b3d1e47 SC |
2769 | |
2770 | case IQ2000_BUILTIN_LUC32L: | |
5039610b | 2771 | return expand_one_builtin (CODE_FOR_luc32l, target, exp, code, 2); |
6b3d1e47 SC |
2772 | |
2773 | case IQ2000_BUILTIN_LUC64: | |
5039610b | 2774 | return expand_one_builtin (CODE_FOR_luc64, target, exp, code, 2); |
6b3d1e47 SC |
2775 | |
2776 | case IQ2000_BUILTIN_LUC64L: | |
5039610b | 2777 | return expand_one_builtin (CODE_FOR_luc64l, target, exp, code, 2); |
6b3d1e47 SC |
2778 | |
2779 | case IQ2000_BUILTIN_LUK: | |
5039610b | 2780 | return expand_one_builtin (CODE_FOR_luk, target, exp, code, 2); |
6b3d1e47 SC |
2781 | |
2782 | case IQ2000_BUILTIN_LULCK: | |
5039610b | 2783 | return expand_one_builtin (CODE_FOR_lulck, target, exp, code, 1); |
6b3d1e47 SC |
2784 | |
2785 | case IQ2000_BUILTIN_LUM32: | |
5039610b | 2786 | return expand_one_builtin (CODE_FOR_lum32, target, exp, code, 2); |
6b3d1e47 SC |
2787 | |
2788 | case IQ2000_BUILTIN_LUM32L: | |
5039610b | 2789 | return expand_one_builtin (CODE_FOR_lum32l, target, exp, code, 2); |
6b3d1e47 SC |
2790 | |
2791 | case IQ2000_BUILTIN_LUM64: | |
5039610b | 2792 | return expand_one_builtin (CODE_FOR_lum64, target, exp, code, 2); |
6b3d1e47 SC |
2793 | |
2794 | case IQ2000_BUILTIN_LUM64L: | |
5039610b | 2795 | return expand_one_builtin (CODE_FOR_lum64l, target, exp, code, 2); |
6b3d1e47 SC |
2796 | |
2797 | case IQ2000_BUILTIN_LURL: | |
5039610b | 2798 | return expand_one_builtin (CODE_FOR_lurl, target, exp, code, 2); |
6b3d1e47 SC |
2799 | |
2800 | case IQ2000_BUILTIN_MRGB: | |
2801 | code[2] = CONST_INT; | |
5039610b | 2802 | return expand_one_builtin (CODE_FOR_mrgb, target, exp, code, 3); |
6b3d1e47 SC |
2803 | |
2804 | case IQ2000_BUILTIN_SRRDL: | |
5039610b | 2805 | return expand_one_builtin (CODE_FOR_srrdl, target, exp, code, 1); |
6b3d1e47 SC |
2806 | |
2807 | case IQ2000_BUILTIN_SRULCK: | |
5039610b | 2808 | return expand_one_builtin (CODE_FOR_srulck, target, exp, code, 1); |
6b3d1e47 SC |
2809 | |
2810 | case IQ2000_BUILTIN_SRWRU: | |
5039610b | 2811 | return expand_one_builtin (CODE_FOR_srwru, target, exp, code, 2); |
6b3d1e47 SC |
2812 | |
2813 | case IQ2000_BUILTIN_TRAPQFL: | |
5039610b | 2814 | return expand_one_builtin (CODE_FOR_trapqfl, target, exp, code, 0); |
6b3d1e47 SC |
2815 | |
2816 | case IQ2000_BUILTIN_TRAPQNE: | |
5039610b | 2817 | return expand_one_builtin (CODE_FOR_trapqne, target, exp, code, 0); |
6b3d1e47 SC |
2818 | |
2819 | case IQ2000_BUILTIN_TRAPREL: | |
5039610b | 2820 | return expand_one_builtin (CODE_FOR_traprel, target, exp, code, 1); |
6b3d1e47 SC |
2821 | |
2822 | case IQ2000_BUILTIN_WBU: | |
5039610b | 2823 | return expand_one_builtin (CODE_FOR_wbu, target, exp, code, 3); |
6b3d1e47 SC |
2824 | |
2825 | case IQ2000_BUILTIN_SYSCALL: | |
5039610b | 2826 | return expand_one_builtin (CODE_FOR_syscall, target, exp, code, 0); |
6b3d1e47 SC |
2827 | } |
2828 | ||
2829 | return NULL_RTX; | |
2830 | } | |
2831 | \f | |
bd5bd7ac KH |
2832 | /* Worker function for TARGET_RETURN_IN_MEMORY. */ |
2833 | ||
69a45040 | 2834 | static bool |
586de218 | 2835 | iq2000_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED) |
69a45040 KH |
2836 | { |
2837 | return ((int_size_in_bytes (type) > (2 * UNITS_PER_WORD)) | |
2838 | || (int_size_in_bytes (type) == -1)); | |
2839 | } | |
2840 | ||
bd5bd7ac KH |
2841 | /* Worker function for TARGET_SETUP_INCOMING_VARARGS. */ |
2842 | ||
69a45040 | 2843 | static void |
d5cc9181 | 2844 | iq2000_setup_incoming_varargs (cumulative_args_t cum_v, |
e7056ca4 RS |
2845 | const function_arg_info &, |
2846 | int *pretend_size, int no_rtl) | |
6b3d1e47 | 2847 | { |
d5cc9181 | 2848 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
69a45040 KH |
2849 | unsigned int iq2000_off = ! cum->last_arg_fp; |
2850 | unsigned int iq2000_fp_off = cum->last_arg_fp; | |
b5144086 | 2851 | |
69a45040 | 2852 | if ((cum->arg_words < MAX_ARGS_IN_REGISTERS - iq2000_off)) |
6b3d1e47 SC |
2853 | { |
2854 | int iq2000_save_gp_regs | |
69a45040 | 2855 | = MAX_ARGS_IN_REGISTERS - cum->arg_words - iq2000_off; |
6b3d1e47 | 2856 | int iq2000_save_fp_regs |
69a45040 | 2857 | = (MAX_ARGS_IN_REGISTERS - cum->fp_arg_words - iq2000_fp_off); |
6b3d1e47 SC |
2858 | |
2859 | if (iq2000_save_gp_regs < 0) | |
2860 | iq2000_save_gp_regs = 0; | |
2861 | if (iq2000_save_fp_regs < 0) | |
2862 | iq2000_save_fp_regs = 0; | |
2863 | ||
2864 | *pretend_size = ((iq2000_save_gp_regs * UNITS_PER_WORD) | |
2865 | + (iq2000_save_fp_regs * UNITS_PER_FPREG)); | |
2866 | ||
2867 | if (! (no_rtl)) | |
2868 | { | |
69a45040 | 2869 | if (cum->arg_words < MAX_ARGS_IN_REGISTERS - iq2000_off) |
6b3d1e47 SC |
2870 | { |
2871 | rtx ptr, mem; | |
0a81f074 RS |
2872 | ptr = plus_constant (Pmode, virtual_incoming_args_rtx, |
2873 | - (iq2000_save_gp_regs | |
2874 | * UNITS_PER_WORD)); | |
6b3d1e47 SC |
2875 | mem = gen_rtx_MEM (BLKmode, ptr); |
2876 | move_block_from_reg | |
69a45040 | 2877 | (cum->arg_words + GP_ARG_FIRST + iq2000_off, |
6b3d1e47 SC |
2878 | mem, |
2879 | iq2000_save_gp_regs); | |
2880 | } | |
2881 | } | |
2882 | } | |
2883 | } | |
2884 | \f | |
2885 | /* A C compound statement to output to stdio stream STREAM the | |
2886 | assembler syntax for an instruction operand that is a memory | |
b5144086 | 2887 | reference whose address is ADDR. ADDR is an RTL expression. */ |
6b3d1e47 | 2888 | |
bf7c1408 | 2889 | static void |
cc8ca59e | 2890 | iq2000_print_operand_address (FILE * file, machine_mode mode, rtx addr) |
6b3d1e47 SC |
2891 | { |
2892 | if (!addr) | |
2893 | error ("PRINT_OPERAND_ADDRESS, null pointer"); | |
2894 | ||
2895 | else | |
2896 | switch (GET_CODE (addr)) | |
2897 | { | |
2898 | case REG: | |
2899 | if (REGNO (addr) == ARG_POINTER_REGNUM) | |
2900 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
2901 | ||
2902 | fprintf (file, "0(%s)", reg_names [REGNO (addr)]); | |
2903 | break; | |
2904 | ||
2905 | case LO_SUM: | |
2906 | { | |
b5144086 SC |
2907 | rtx arg0 = XEXP (addr, 0); |
2908 | rtx arg1 = XEXP (addr, 1); | |
6b3d1e47 SC |
2909 | |
2910 | if (GET_CODE (arg0) != REG) | |
2911 | abort_with_insn (addr, | |
2912 | "PRINT_OPERAND_ADDRESS, LO_SUM with #1 not REG."); | |
2913 | ||
2914 | fprintf (file, "%%lo("); | |
cc8ca59e | 2915 | iq2000_print_operand_address (file, mode, arg1); |
6b3d1e47 SC |
2916 | fprintf (file, ")(%s)", reg_names [REGNO (arg0)]); |
2917 | } | |
2918 | break; | |
2919 | ||
2920 | case PLUS: | |
2921 | { | |
b5144086 SC |
2922 | rtx reg = 0; |
2923 | rtx offset = 0; | |
2924 | rtx arg0 = XEXP (addr, 0); | |
2925 | rtx arg1 = XEXP (addr, 1); | |
6b3d1e47 SC |
2926 | |
2927 | if (GET_CODE (arg0) == REG) | |
2928 | { | |
2929 | reg = arg0; | |
2930 | offset = arg1; | |
2931 | if (GET_CODE (offset) == REG) | |
2932 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, 2 regs"); | |
2933 | } | |
2934 | ||
2935 | else if (GET_CODE (arg1) == REG) | |
2936 | reg = arg1, offset = arg0; | |
2937 | else if (CONSTANT_P (arg0) && CONSTANT_P (arg1)) | |
2938 | { | |
2939 | output_addr_const (file, addr); | |
2940 | break; | |
2941 | } | |
2942 | else | |
2943 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, no regs"); | |
2944 | ||
2945 | if (! CONSTANT_P (offset)) | |
2946 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, invalid insn #2"); | |
2947 | ||
2948 | if (REGNO (reg) == ARG_POINTER_REGNUM) | |
2949 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
2950 | ||
2951 | output_addr_const (file, offset); | |
2952 | fprintf (file, "(%s)", reg_names [REGNO (reg)]); | |
2953 | } | |
2954 | break; | |
2955 | ||
2956 | case LABEL_REF: | |
2957 | case SYMBOL_REF: | |
2958 | case CONST_INT: | |
2959 | case CONST: | |
2960 | output_addr_const (file, addr); | |
2961 | if (GET_CODE (addr) == CONST_INT) | |
2962 | fprintf (file, "(%s)", reg_names [0]); | |
2963 | break; | |
2964 | ||
2965 | default: | |
2966 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, invalid insn #1"); | |
2967 | break; | |
2968 | } | |
2969 | } | |
2970 | \f | |
b5144086 SC |
2971 | /* A C compound statement to output to stdio stream FILE the |
2972 | assembler syntax for an instruction operand OP. | |
6b3d1e47 | 2973 | |
b5144086 | 2974 | LETTER is a value that can be used to specify one of several ways |
6b3d1e47 | 2975 | of printing the operand. It is used when identical operands |
b5144086 | 2976 | must be printed differently depending on the context. LETTER |
6b3d1e47 SC |
2977 | comes from the `%' specification that was used to request |
2978 | printing of the operand. If the specification was just `%DIGIT' | |
b5144086 | 2979 | then LETTER is 0; if the specification was `%LTR DIGIT' then LETTER |
6b3d1e47 SC |
2980 | is the ASCII code for LTR. |
2981 | ||
b5144086 | 2982 | If OP is a register, this macro should print the register's name. |
6b3d1e47 SC |
2983 | The names can be found in an array `reg_names' whose type is |
2984 | `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. | |
2985 | ||
2986 | When the machine description has a specification `%PUNCT' (a `%' | |
2987 | followed by a punctuation character), this macro is called with | |
b5144086 | 2988 | a null pointer for X and the punctuation character for LETTER. |
6b3d1e47 SC |
2989 | |
2990 | The IQ2000 specific codes are: | |
2991 | ||
2992 | 'X' X is CONST_INT, prints upper 16 bits in hexadecimal format = "0x%04x", | |
2993 | 'x' X is CONST_INT, prints lower 16 bits in hexadecimal format = "0x%04x", | |
2994 | 'd' output integer constant in decimal, | |
2995 | 'z' if the operand is 0, use $0 instead of normal operand. | |
2996 | 'D' print second part of double-word register or memory operand. | |
2997 | 'L' print low-order register of double-word register operand. | |
2998 | 'M' print high-order register of double-word register operand. | |
2999 | 'C' print part of opcode for a branch condition. | |
3000 | 'F' print part of opcode for a floating-point branch condition. | |
3001 | 'N' print part of opcode for a branch condition, inverted. | |
3002 | 'W' print part of opcode for a floating-point branch condition, inverted. | |
3003 | 'A' Print part of opcode for a bit test condition. | |
3004 | 'P' Print label for a bit test. | |
3005 | 'p' Print log for a bit test. | |
3006 | 'B' print 'z' for EQ, 'n' for NE | |
3007 | 'b' print 'n' for EQ, 'z' for NE | |
3008 | 'T' print 'f' for EQ, 't' for NE | |
3009 | 't' print 't' for EQ, 'f' for NE | |
3010 | 'Z' print register and a comma, but print nothing for $fcc0 | |
3011 | '?' Print 'l' if we are to use a branch likely instead of normal branch. | |
3012 | '@' Print the name of the assembler temporary register (at or $1). | |
3013 | '.' Print the name of the register with a hard-wired zero (zero or $0). | |
3014 | '$' Print the name of the stack pointer register (sp or $29). | |
3015 | '+' Print the name of the gp register (gp or $28). */ | |
3016 | ||
bf7c1408 NF |
3017 | static void |
3018 | iq2000_print_operand (FILE *file, rtx op, int letter) | |
6b3d1e47 | 3019 | { |
b5144086 | 3020 | enum rtx_code code; |
6b3d1e47 | 3021 | |
bf7c1408 | 3022 | if (iq2000_print_operand_punct_valid_p (letter)) |
6b3d1e47 SC |
3023 | { |
3024 | switch (letter) | |
3025 | { | |
3026 | case '?': | |
3027 | if (iq2000_branch_likely) | |
3028 | putc ('l', file); | |
3029 | break; | |
3030 | ||
3031 | case '@': | |
3032 | fputs (reg_names [GP_REG_FIRST + 1], file); | |
3033 | break; | |
3034 | ||
3035 | case '.': | |
3036 | fputs (reg_names [GP_REG_FIRST + 0], file); | |
3037 | break; | |
3038 | ||
3039 | case '$': | |
3040 | fputs (reg_names[STACK_POINTER_REGNUM], file); | |
3041 | break; | |
3042 | ||
3043 | case '+': | |
3044 | fputs (reg_names[GP_REG_FIRST + 28], file); | |
3045 | break; | |
3046 | ||
3047 | default: | |
904f3daa | 3048 | error ("PRINT_OPERAND: Unknown punctuation %<%c%>", letter); |
6b3d1e47 SC |
3049 | break; |
3050 | } | |
3051 | ||
3052 | return; | |
3053 | } | |
3054 | ||
3055 | if (! op) | |
3056 | { | |
3057 | error ("PRINT_OPERAND null pointer"); | |
3058 | return; | |
3059 | } | |
3060 | ||
3061 | code = GET_CODE (op); | |
3062 | ||
3063 | if (code == SIGN_EXTEND) | |
3064 | op = XEXP (op, 0), code = GET_CODE (op); | |
3065 | ||
3066 | if (letter == 'C') | |
3067 | switch (code) | |
3068 | { | |
3069 | case EQ: fputs ("eq", file); break; | |
3070 | case NE: fputs ("ne", file); break; | |
3071 | case GT: fputs ("gt", file); break; | |
3072 | case GE: fputs ("ge", file); break; | |
3073 | case LT: fputs ("lt", file); break; | |
3074 | case LE: fputs ("le", file); break; | |
3075 | case GTU: fputs ("ne", file); break; | |
3076 | case GEU: fputs ("geu", file); break; | |
3077 | case LTU: fputs ("ltu", file); break; | |
3078 | case LEU: fputs ("eq", file); break; | |
3079 | default: | |
3080 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%C"); | |
3081 | } | |
3082 | ||
3083 | else if (letter == 'N') | |
3084 | switch (code) | |
3085 | { | |
3086 | case EQ: fputs ("ne", file); break; | |
3087 | case NE: fputs ("eq", file); break; | |
3088 | case GT: fputs ("le", file); break; | |
3089 | case GE: fputs ("lt", file); break; | |
3090 | case LT: fputs ("ge", file); break; | |
3091 | case LE: fputs ("gt", file); break; | |
3092 | case GTU: fputs ("leu", file); break; | |
3093 | case GEU: fputs ("ltu", file); break; | |
3094 | case LTU: fputs ("geu", file); break; | |
3095 | case LEU: fputs ("gtu", file); break; | |
3096 | default: | |
3097 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%N"); | |
3098 | } | |
3099 | ||
3100 | else if (letter == 'F') | |
3101 | switch (code) | |
3102 | { | |
3103 | case EQ: fputs ("c1f", file); break; | |
3104 | case NE: fputs ("c1t", file); break; | |
3105 | default: | |
3106 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%F"); | |
3107 | } | |
3108 | ||
3109 | else if (letter == 'W') | |
3110 | switch (code) | |
3111 | { | |
3112 | case EQ: fputs ("c1t", file); break; | |
3113 | case NE: fputs ("c1f", file); break; | |
3114 | default: | |
3115 | abort_with_insn (op, "PRINT_OPERAND, invalid insn for %%W"); | |
3116 | } | |
3117 | ||
3118 | else if (letter == 'A') | |
3119 | fputs (code == LABEL_REF ? "i" : "in", file); | |
3120 | ||
3121 | else if (letter == 'P') | |
3122 | { | |
3123 | if (code == LABEL_REF) | |
3124 | output_addr_const (file, op); | |
3125 | else if (code != PC) | |
3126 | output_operand_lossage ("invalid %%P operand"); | |
3127 | } | |
3128 | ||
3129 | else if (letter == 'p') | |
3130 | { | |
3131 | int value; | |
3132 | if (code != CONST_INT | |
3133 | || (value = exact_log2 (INTVAL (op))) < 0) | |
3134 | output_operand_lossage ("invalid %%p value"); | |
954c7446 JR |
3135 | else |
3136 | fprintf (file, "%d", value); | |
6b3d1e47 SC |
3137 | } |
3138 | ||
3139 | else if (letter == 'Z') | |
3140 | { | |
292c8018 | 3141 | gcc_unreachable (); |
6b3d1e47 SC |
3142 | } |
3143 | ||
3144 | else if (code == REG || code == SUBREG) | |
3145 | { | |
b5144086 | 3146 | int regnum; |
6b3d1e47 SC |
3147 | |
3148 | if (code == REG) | |
3149 | regnum = REGNO (op); | |
3150 | else | |
3151 | regnum = true_regnum (op); | |
3152 | ||
3153 | if ((letter == 'M' && ! WORDS_BIG_ENDIAN) | |
3154 | || (letter == 'L' && WORDS_BIG_ENDIAN) | |
3155 | || letter == 'D') | |
3156 | regnum++; | |
3157 | ||
3158 | fprintf (file, "%s", reg_names[regnum]); | |
3159 | } | |
3160 | ||
3161 | else if (code == MEM) | |
3162 | { | |
cc8ca59e JB |
3163 | machine_mode mode = GET_MODE (op); |
3164 | ||
6b3d1e47 | 3165 | if (letter == 'D') |
cc8ca59e | 3166 | output_address (mode, plus_constant (Pmode, XEXP (op, 0), 4)); |
6b3d1e47 | 3167 | else |
cc8ca59e | 3168 | output_address (mode, XEXP (op, 0)); |
6b3d1e47 SC |
3169 | } |
3170 | ||
3171 | else if (code == CONST_DOUBLE | |
3172 | && GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT) | |
3173 | { | |
3174 | char s[60]; | |
3175 | ||
3176 | real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (op), sizeof (s), 0, 1); | |
3177 | fputs (s, file); | |
3178 | } | |
3179 | ||
3180 | else if (letter == 'x' && GET_CODE (op) == CONST_INT) | |
3181 | fprintf (file, HOST_WIDE_INT_PRINT_HEX, 0xffff & INTVAL(op)); | |
3182 | ||
3183 | else if (letter == 'X' && GET_CODE(op) == CONST_INT) | |
3184 | fprintf (file, HOST_WIDE_INT_PRINT_HEX, 0xffff & (INTVAL (op) >> 16)); | |
3185 | ||
3186 | else if (letter == 'd' && GET_CODE(op) == CONST_INT) | |
3187 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, (INTVAL(op))); | |
3188 | ||
3189 | else if (letter == 'z' && GET_CODE (op) == CONST_INT && INTVAL (op) == 0) | |
3190 | fputs (reg_names[GP_REG_FIRST], file); | |
3191 | ||
3192 | else if (letter == 'd' || letter == 'x' || letter == 'X') | |
3193 | output_operand_lossage ("invalid use of %%d, %%x, or %%X"); | |
3194 | ||
3195 | else if (letter == 'B') | |
3196 | fputs (code == EQ ? "z" : "n", file); | |
3197 | else if (letter == 'b') | |
3198 | fputs (code == EQ ? "n" : "z", file); | |
3199 | else if (letter == 'T') | |
3200 | fputs (code == EQ ? "f" : "t", file); | |
3201 | else if (letter == 't') | |
3202 | fputs (code == EQ ? "t" : "f", file); | |
3203 | ||
3204 | else if (code == CONST && GET_CODE (XEXP (op, 0)) == REG) | |
3205 | { | |
bf7c1408 | 3206 | iq2000_print_operand (file, XEXP (op, 0), letter); |
6b3d1e47 SC |
3207 | } |
3208 | ||
3209 | else | |
3210 | output_addr_const (file, op); | |
3211 | } | |
b5144086 | 3212 | |
bf7c1408 NF |
3213 | static bool |
3214 | iq2000_print_operand_punct_valid_p (unsigned char code) | |
3215 | { | |
3216 | return iq2000_print_operand_punct[code]; | |
3217 | } | |
506d7b68 PB |
3218 | |
3219 | /* For the IQ2000, transform: | |
3220 | ||
3221 | memory(X + <large int>) | |
3222 | into: | |
3223 | Y = <large int> & ~0x7fff; | |
3224 | Z = X + Y | |
3225 | memory (Z + (<large int> & 0x7fff)); | |
3226 | */ | |
3227 | ||
3228 | rtx | |
3229 | iq2000_legitimize_address (rtx xinsn, rtx old_x ATTRIBUTE_UNUSED, | |
ef4bddc2 | 3230 | machine_mode mode) |
506d7b68 PB |
3231 | { |
3232 | if (TARGET_DEBUG_B_MODE) | |
3233 | { | |
3234 | GO_PRINTF ("\n========== LEGITIMIZE_ADDRESS\n"); | |
3235 | GO_DEBUG_RTX (xinsn); | |
3236 | } | |
3237 | ||
3238 | if (iq2000_check_split (xinsn, mode)) | |
3239 | { | |
3240 | return gen_rtx_LO_SUM (Pmode, | |
3241 | copy_to_mode_reg (Pmode, | |
3242 | gen_rtx_HIGH (Pmode, xinsn)), | |
3243 | xinsn); | |
3244 | } | |
3245 | ||
3246 | if (GET_CODE (xinsn) == PLUS) | |
3247 | { | |
3248 | rtx xplus0 = XEXP (xinsn, 0); | |
3249 | rtx xplus1 = XEXP (xinsn, 1); | |
3250 | enum rtx_code code0 = GET_CODE (xplus0); | |
3251 | enum rtx_code code1 = GET_CODE (xplus1); | |
3252 | ||
3253 | if (code0 != REG && code1 == REG) | |
3254 | { | |
3255 | xplus0 = XEXP (xinsn, 1); | |
3256 | xplus1 = XEXP (xinsn, 0); | |
3257 | code0 = GET_CODE (xplus0); | |
3258 | code1 = GET_CODE (xplus1); | |
3259 | } | |
3260 | ||
3261 | if (code0 == REG && REG_MODE_OK_FOR_BASE_P (xplus0, mode) | |
3262 | && code1 == CONST_INT && !SMALL_INT (xplus1)) | |
3263 | { | |
3264 | rtx int_reg = gen_reg_rtx (Pmode); | |
3265 | rtx ptr_reg = gen_reg_rtx (Pmode); | |
3266 | ||
3267 | emit_move_insn (int_reg, | |
3268 | GEN_INT (INTVAL (xplus1) & ~ 0x7fff)); | |
3269 | ||
f7df4a84 | 3270 | emit_insn (gen_rtx_SET (ptr_reg, |
506d7b68 PB |
3271 | gen_rtx_PLUS (Pmode, xplus0, int_reg))); |
3272 | ||
0a81f074 | 3273 | return plus_constant (Pmode, ptr_reg, INTVAL (xplus1) & 0x7fff); |
506d7b68 PB |
3274 | } |
3275 | } | |
3276 | ||
3277 | if (TARGET_DEBUG_B_MODE) | |
3278 | GO_PRINTF ("LEGITIMIZE_ADDRESS could not fix.\n"); | |
3279 | ||
3280 | return xinsn; | |
3281 | } | |
3282 | ||
3283 | ||
b5144086 | 3284 | static bool |
e548c9df | 3285 | iq2000_rtx_costs (rtx x, machine_mode mode, int outer_code ATTRIBUTE_UNUSED, |
68f932c4 | 3286 | int opno ATTRIBUTE_UNUSED, int * total, |
899cc0f4 | 3287 | bool speed ATTRIBUTE_UNUSED) |
b5144086 | 3288 | { |
e548c9df | 3289 | int code = GET_CODE (x); |
b5144086 SC |
3290 | |
3291 | switch (code) | |
3292 | { | |
3293 | case MEM: | |
3294 | { | |
3295 | int num_words = (GET_MODE_SIZE (mode) > UNITS_PER_WORD) ? 2 : 1; | |
3296 | ||
3297 | if (simple_memory_operand (x, mode)) | |
7d1f0a00 | 3298 | return COSTS_N_INSNS (num_words) != 0; |
b5144086 SC |
3299 | |
3300 | * total = COSTS_N_INSNS (2 * num_words); | |
3301 | break; | |
3302 | } | |
3303 | ||
3304 | case FFS: | |
3305 | * total = COSTS_N_INSNS (6); | |
3306 | break; | |
3307 | ||
3308 | case AND: | |
3309 | case IOR: | |
3310 | case XOR: | |
3311 | case NOT: | |
3312 | * total = COSTS_N_INSNS (mode == DImode ? 2 : 1); | |
3313 | break; | |
3314 | ||
3315 | case ASHIFT: | |
3316 | case ASHIFTRT: | |
3317 | case LSHIFTRT: | |
3318 | if (mode == DImode) | |
3319 | * total = COSTS_N_INSNS ((GET_CODE (XEXP (x, 1)) == CONST_INT) ? 4 : 12); | |
3320 | else | |
3321 | * total = COSTS_N_INSNS (1); | |
3322 | break; | |
3323 | ||
3324 | case ABS: | |
3325 | if (mode == SFmode || mode == DFmode) | |
3326 | * total = COSTS_N_INSNS (1); | |
3327 | else | |
3328 | * total = COSTS_N_INSNS (4); | |
3329 | break; | |
3330 | ||
3331 | case PLUS: | |
3332 | case MINUS: | |
3333 | if (mode == SFmode || mode == DFmode) | |
3334 | * total = COSTS_N_INSNS (6); | |
3335 | else if (mode == DImode) | |
3336 | * total = COSTS_N_INSNS (4); | |
3337 | else | |
3338 | * total = COSTS_N_INSNS (1); | |
3339 | break; | |
3340 | ||
3341 | case NEG: | |
3342 | * total = (mode == DImode) ? 4 : 1; | |
3343 | break; | |
3344 | ||
3345 | case MULT: | |
3346 | if (mode == SFmode) | |
3347 | * total = COSTS_N_INSNS (7); | |
3348 | else if (mode == DFmode) | |
3349 | * total = COSTS_N_INSNS (8); | |
3350 | else | |
3351 | * total = COSTS_N_INSNS (10); | |
3352 | break; | |
3353 | ||
3354 | case DIV: | |
3355 | case MOD: | |
3356 | if (mode == SFmode) | |
3357 | * total = COSTS_N_INSNS (23); | |
3358 | else if (mode == DFmode) | |
3359 | * total = COSTS_N_INSNS (36); | |
3360 | else | |
3361 | * total = COSTS_N_INSNS (69); | |
3362 | break; | |
3363 | ||
3364 | case UDIV: | |
3365 | case UMOD: | |
3366 | * total = COSTS_N_INSNS (69); | |
3367 | break; | |
3368 | ||
3369 | case SIGN_EXTEND: | |
3370 | * total = COSTS_N_INSNS (2); | |
3371 | break; | |
3372 | ||
3373 | case ZERO_EXTEND: | |
3374 | * total = COSTS_N_INSNS (1); | |
3375 | break; | |
3376 | ||
3377 | case CONST_INT: | |
3378 | * total = 0; | |
3379 | break; | |
3380 | ||
3381 | case LABEL_REF: | |
3382 | * total = COSTS_N_INSNS (2); | |
3383 | break; | |
3384 | ||
3385 | case CONST: | |
3386 | { | |
3387 | rtx offset = const0_rtx; | |
3388 | rtx symref = eliminate_constant_term (XEXP (x, 0), & offset); | |
3389 | ||
3390 | if (GET_CODE (symref) == LABEL_REF) | |
3391 | * total = COSTS_N_INSNS (2); | |
3392 | else if (GET_CODE (symref) != SYMBOL_REF) | |
3393 | * total = COSTS_N_INSNS (4); | |
5b8d96f1 | 3394 | /* Let's be paranoid.... */ |
b5144086 SC |
3395 | else if (INTVAL (offset) < -32768 || INTVAL (offset) > 32767) |
3396 | * total = COSTS_N_INSNS (2); | |
3397 | else | |
3398 | * total = COSTS_N_INSNS (SYMBOL_REF_FLAG (symref) ? 1 : 2); | |
3399 | break; | |
3400 | } | |
3401 | ||
3402 | case SYMBOL_REF: | |
3403 | * total = COSTS_N_INSNS (SYMBOL_REF_FLAG (x) ? 1 : 2); | |
3404 | break; | |
3405 | ||
3406 | case CONST_DOUBLE: | |
3407 | { | |
3408 | rtx high, low; | |
3409 | ||
3410 | split_double (x, & high, & low); | |
3411 | ||
3412 | * total = COSTS_N_INSNS ( (high == CONST0_RTX (GET_MODE (high)) | |
3413 | || low == CONST0_RTX (GET_MODE (low))) | |
3414 | ? 2 : 4); | |
3415 | break; | |
3416 | } | |
3417 | ||
3418 | default: | |
3419 | return false; | |
3420 | } | |
3421 | return true; | |
3422 | } | |
3423 | ||
f4a33d37 RH |
3424 | /* Worker for TARGET_ASM_TRAMPOLINE_TEMPLATE. */ |
3425 | ||
3426 | static void | |
3427 | iq2000_asm_trampoline_template (FILE *f) | |
3428 | { | |
3429 | fprintf (f, "\t.word\t0x03e00821\t\t# move $1,$31\n"); | |
3430 | fprintf (f, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n"); | |
3431 | fprintf (f, "\t.word\t0x00000000\t\t# nop\n"); | |
3432 | if (Pmode == DImode) | |
3433 | { | |
3434 | fprintf (f, "\t.word\t0xdfe30014\t\t# ld $3,20($31)\n"); | |
3435 | fprintf (f, "\t.word\t0xdfe2001c\t\t# ld $2,28($31)\n"); | |
3436 | } | |
3437 | else | |
3438 | { | |
3439 | fprintf (f, "\t.word\t0x8fe30014\t\t# lw $3,20($31)\n"); | |
3440 | fprintf (f, "\t.word\t0x8fe20018\t\t# lw $2,24($31)\n"); | |
3441 | } | |
3442 | fprintf (f, "\t.word\t0x0060c821\t\t# move $25,$3 (abicalls)\n"); | |
3443 | fprintf (f, "\t.word\t0x00600008\t\t# jr $3\n"); | |
3444 | fprintf (f, "\t.word\t0x0020f821\t\t# move $31,$1\n"); | |
3445 | fprintf (f, "\t.word\t0x00000000\t\t# <function address>\n"); | |
3446 | fprintf (f, "\t.word\t0x00000000\t\t# <static chain value>\n"); | |
3447 | } | |
3448 | ||
3449 | /* Worker for TARGET_TRAMPOLINE_INIT. */ | |
3450 | ||
3451 | static void | |
3452 | iq2000_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) | |
3453 | { | |
3454 | rtx fnaddr = XEXP (DECL_RTL (fndecl), 0); | |
3455 | rtx mem; | |
3456 | ||
3457 | emit_block_move (m_tramp, assemble_trampoline_template (), | |
3458 | GEN_INT (TRAMPOLINE_CODE_SIZE), BLOCK_OP_NORMAL); | |
3459 | ||
3460 | mem = adjust_address (m_tramp, Pmode, TRAMPOLINE_CODE_SIZE); | |
3461 | emit_move_insn (mem, fnaddr); | |
3462 | mem = adjust_address (m_tramp, Pmode, | |
3463 | TRAMPOLINE_CODE_SIZE + GET_MODE_SIZE (Pmode)); | |
3464 | emit_move_insn (mem, chain_value); | |
3465 | } | |
3466 | ||
f939c3e6 RS |
3467 | /* Implement TARGET_HARD_REGNO_MODE_OK. */ |
3468 | ||
3469 | static bool | |
3470 | iq2000_hard_regno_mode_ok (unsigned int regno, machine_mode mode) | |
3471 | { | |
3472 | return (REGNO_REG_CLASS (regno) == GR_REGS | |
3473 | ? (regno & 1) == 0 || GET_MODE_SIZE (mode) <= 4 | |
3474 | : (regno & 1) == 0 || GET_MODE_SIZE (mode) == 4); | |
3475 | } | |
3476 | ||
99e1629f RS |
3477 | /* Implement TARGET_MODES_TIEABLE_P. */ |
3478 | ||
3479 | static bool | |
3480 | iq2000_modes_tieable_p (machine_mode mode1, machine_mode mode2) | |
3481 | { | |
3482 | return ((GET_MODE_CLASS (mode1) == MODE_FLOAT | |
3483 | || GET_MODE_CLASS (mode1) == MODE_COMPLEX_FLOAT) | |
3484 | == (GET_MODE_CLASS (mode2) == MODE_FLOAT | |
3485 | || GET_MODE_CLASS (mode2) == MODE_COMPLEX_FLOAT)); | |
3486 | } | |
3487 | ||
58e17cf8 RS |
3488 | /* Implement TARGET_CONSTANT_ALIGNMENT. */ |
3489 | ||
3490 | static HOST_WIDE_INT | |
3491 | iq2000_constant_alignment (const_tree exp, HOST_WIDE_INT align) | |
3492 | { | |
3493 | if (TREE_CODE (exp) == STRING_CST || TREE_CODE (exp) == CONSTRUCTOR) | |
3494 | return MAX (align, BITS_PER_WORD); | |
3495 | return align; | |
3496 | } | |
3497 | ||
2a31c321 RS |
3498 | /* Implement TARGET_STARTING_FRAME_OFFSET. */ |
3499 | ||
3500 | static HOST_WIDE_INT | |
3501 | iq2000_starting_frame_offset (void) | |
3502 | { | |
3503 | return crtl->outgoing_args_size; | |
3504 | } | |
3505 | ||
b5144086 | 3506 | #include "gt-iq2000.h" |