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188fc5b5 | 1 | /* Definitions of target machine for GCC for IA-32. |
cf011243 | 2 | Copyright (C) 1988, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
eb5bb0fd | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
2f83c7d6 | 4 | Free Software Foundation, Inc. |
c98f8742 | 5 | |
188fc5b5 | 6 | This file is part of GCC. |
c98f8742 | 7 | |
188fc5b5 | 8 | GCC is free software; you can redistribute it and/or modify |
c98f8742 | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
c98f8742 JVA |
11 | any later version. |
12 | ||
188fc5b5 | 13 | GCC is distributed in the hope that it will be useful, |
c98f8742 JVA |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
748086b7 JJ |
18 | Under Section 7 of GPL version 3, you are granted additional |
19 | permissions described in the GCC Runtime Library Exception, version | |
20 | 3.1, as published by the Free Software Foundation. | |
21 | ||
22 | You should have received a copy of the GNU General Public License and | |
23 | a copy of the GCC Runtime Library Exception along with this program; | |
24 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
2f83c7d6 | 25 | <http://www.gnu.org/licenses/>. */ |
c98f8742 | 26 | |
ccf8e764 RH |
27 | /* The purpose of this file is to define the characteristics of the i386, |
28 | independent of assembler syntax or operating system. | |
29 | ||
30 | Three other files build on this one to describe a specific assembler syntax: | |
31 | bsd386.h, att386.h, and sun386.h. | |
32 | ||
33 | The actual tm.h file for a particular system should include | |
34 | this file, and then the file for the appropriate assembler syntax. | |
35 | ||
36 | Many macros that specify assembler syntax are omitted entirely from | |
37 | this file because they really belong in the files for particular | |
38 | assemblers. These include RP, IP, LPREFIX, PUT_OP_SIZE, USE_STAR, | |
39 | ADDR_BEG, ADDR_END, PRINT_IREG, PRINT_SCALE, PRINT_B_I_S, and many | |
40 | that start with ASM_ or end in ASM_OP. */ | |
41 | ||
0a1c5e55 UB |
42 | /* Redefines for option macros. */ |
43 | ||
44 | #define TARGET_64BIT OPTION_ISA_64BIT | |
45 | #define TARGET_MMX OPTION_ISA_MMX | |
46 | #define TARGET_3DNOW OPTION_ISA_3DNOW | |
47 | #define TARGET_3DNOW_A OPTION_ISA_3DNOW_A | |
48 | #define TARGET_SSE OPTION_ISA_SSE | |
49 | #define TARGET_SSE2 OPTION_ISA_SSE2 | |
50 | #define TARGET_SSE3 OPTION_ISA_SSE3 | |
51 | #define TARGET_SSSE3 OPTION_ISA_SSSE3 | |
52 | #define TARGET_SSE4_1 OPTION_ISA_SSE4_1 | |
3b8dd071 | 53 | #define TARGET_SSE4_2 OPTION_ISA_SSE4_2 |
95879c72 | 54 | #define TARGET_AVX OPTION_ISA_AVX |
7afac110 | 55 | #define TARGET_AVX2 OPTION_ISA_AVX2 |
95879c72 | 56 | #define TARGET_FMA OPTION_ISA_FMA |
0a1c5e55 | 57 | #define TARGET_SSE4A OPTION_ISA_SSE4A |
cbf2e4d4 | 58 | #define TARGET_FMA4 OPTION_ISA_FMA4 |
43a8b705 | 59 | #define TARGET_XOP OPTION_ISA_XOP |
3e901069 | 60 | #define TARGET_LWP OPTION_ISA_LWP |
04e1d06b | 61 | #define TARGET_ROUND OPTION_ISA_ROUND |
ab442df7 | 62 | #define TARGET_ABM OPTION_ISA_ABM |
91afcfa3 | 63 | #define TARGET_BMI OPTION_ISA_BMI |
82feeb8d | 64 | #define TARGET_BMI2 OPTION_ISA_BMI2 |
5fcafa60 | 65 | #define TARGET_LZCNT OPTION_ISA_LZCNT |
94d13ad1 | 66 | #define TARGET_TBM OPTION_ISA_TBM |
ab442df7 MM |
67 | #define TARGET_POPCNT OPTION_ISA_POPCNT |
68 | #define TARGET_SAHF OPTION_ISA_SAHF | |
cabf85c3 | 69 | #define TARGET_MOVBE OPTION_ISA_MOVBE |
8ed0ce99 | 70 | #define TARGET_CRC32 OPTION_ISA_CRC32 |
ab442df7 MM |
71 | #define TARGET_AES OPTION_ISA_AES |
72 | #define TARGET_PCLMUL OPTION_ISA_PCLMUL | |
73 | #define TARGET_CMPXCHG16B OPTION_ISA_CX16 | |
4ee89d5f L |
74 | #define TARGET_FSGSBASE OPTION_ISA_FSGSBASE |
75 | #define TARGET_RDRND OPTION_ISA_RDRND | |
76 | #define TARGET_F16C OPTION_ISA_F16C | |
bf2eaa3f | 77 | #define TARGET_RTM OPTION_ISA_RTM |
ab442df7 | 78 | |
1ab8b791 L |
79 | #define TARGET_LP64 OPTION_ABI_64 |
80 | #define TARGET_X32 OPTION_ABI_X32 | |
04e1d06b | 81 | |
cbf2e4d4 HJ |
82 | /* SSE4.1 defines round instructions */ |
83 | #define OPTION_MASK_ISA_ROUND OPTION_MASK_ISA_SSE4_1 | |
04e1d06b | 84 | #define OPTION_ISA_ROUND ((ix86_isa_flags & OPTION_MASK_ISA_ROUND) != 0) |
0a1c5e55 | 85 | |
26b5109f RS |
86 | #include "config/vxworks-dummy.h" |
87 | ||
7eb68c06 | 88 | #include "config/i386/i386-opts.h" |
ccf8e764 | 89 | |
c69fa2d4 | 90 | #define MAX_STRINGOP_ALGS 4 |
ccf8e764 | 91 | |
8c996513 JH |
92 | /* Specify what algorithm to use for stringops on known size. |
93 | When size is unknown, the UNKNOWN_SIZE alg is used. When size is | |
94 | known at compile time or estimated via feedback, the SIZE array | |
95 | is walked in order until MAX is greater then the estimate (or -1 | |
4f3f76e6 | 96 | means infinity). Corresponding ALG is used then. |
8c996513 | 97 | For example initializer: |
4f3f76e6 | 98 | {{256, loop}, {-1, rep_prefix_4_byte}} |
8c996513 | 99 | will use loop for blocks smaller or equal to 256 bytes, rep prefix will |
ccf8e764 | 100 | be used otherwise. */ |
8c996513 JH |
101 | struct stringop_algs |
102 | { | |
103 | const enum stringop_alg unknown_size; | |
104 | const struct stringop_strategy { | |
105 | const int max; | |
106 | const enum stringop_alg alg; | |
c69fa2d4 | 107 | } size [MAX_STRINGOP_ALGS]; |
8c996513 JH |
108 | }; |
109 | ||
d4ba09c0 SC |
110 | /* Define the specific costs for a given cpu */ |
111 | ||
112 | struct processor_costs { | |
8b60264b KG |
113 | const int add; /* cost of an add instruction */ |
114 | const int lea; /* cost of a lea instruction */ | |
115 | const int shift_var; /* variable shift costs */ | |
116 | const int shift_const; /* constant shift costs */ | |
f676971a | 117 | const int mult_init[5]; /* cost of starting a multiply |
4977bab6 | 118 | in QImode, HImode, SImode, DImode, TImode*/ |
8b60264b | 119 | const int mult_bit; /* cost of multiply per each bit set */ |
f676971a | 120 | const int divide[5]; /* cost of a divide/mod |
4977bab6 | 121 | in QImode, HImode, SImode, DImode, TImode*/ |
44cf5b6a JH |
122 | int movsx; /* The cost of movsx operation. */ |
123 | int movzx; /* The cost of movzx operation. */ | |
8b60264b KG |
124 | const int large_insn; /* insns larger than this cost more */ |
125 | const int move_ratio; /* The threshold of number of scalar | |
ac775968 | 126 | memory-to-memory move insns. */ |
8b60264b KG |
127 | const int movzbl_load; /* cost of loading using movzbl */ |
128 | const int int_load[3]; /* cost of loading integer registers | |
96e7ae40 JH |
129 | in QImode, HImode and SImode relative |
130 | to reg-reg move (2). */ | |
8b60264b | 131 | const int int_store[3]; /* cost of storing integer register |
96e7ae40 | 132 | in QImode, HImode and SImode */ |
8b60264b KG |
133 | const int fp_move; /* cost of reg,reg fld/fst */ |
134 | const int fp_load[3]; /* cost of loading FP register | |
96e7ae40 | 135 | in SFmode, DFmode and XFmode */ |
8b60264b | 136 | const int fp_store[3]; /* cost of storing FP register |
96e7ae40 | 137 | in SFmode, DFmode and XFmode */ |
8b60264b KG |
138 | const int mmx_move; /* cost of moving MMX register. */ |
139 | const int mmx_load[2]; /* cost of loading MMX register | |
fa79946e | 140 | in SImode and DImode */ |
8b60264b | 141 | const int mmx_store[2]; /* cost of storing MMX register |
fa79946e | 142 | in SImode and DImode */ |
8b60264b KG |
143 | const int sse_move; /* cost of moving SSE register. */ |
144 | const int sse_load[3]; /* cost of loading SSE register | |
fa79946e | 145 | in SImode, DImode and TImode*/ |
8b60264b | 146 | const int sse_store[3]; /* cost of storing SSE register |
fa79946e | 147 | in SImode, DImode and TImode*/ |
8b60264b | 148 | const int mmxsse_to_integer; /* cost of moving mmxsse register to |
fa79946e | 149 | integer and vice versa. */ |
46cb0441 ZD |
150 | const int l1_cache_size; /* size of l1 cache, in kilobytes. */ |
151 | const int l2_cache_size; /* size of l2 cache, in kilobytes. */ | |
f4365627 JH |
152 | const int prefetch_block; /* bytes moved to cache for prefetch. */ |
153 | const int simultaneous_prefetches; /* number of parallel prefetch | |
154 | operations. */ | |
4977bab6 | 155 | const int branch_cost; /* Default value for BRANCH_COST. */ |
229b303a RS |
156 | const int fadd; /* cost of FADD and FSUB instructions. */ |
157 | const int fmul; /* cost of FMUL instruction. */ | |
158 | const int fdiv; /* cost of FDIV instruction. */ | |
159 | const int fabs; /* cost of FABS instruction. */ | |
160 | const int fchs; /* cost of FCHS instruction. */ | |
161 | const int fsqrt; /* cost of FSQRT instruction. */ | |
8c996513 | 162 | /* Specify what algorithm |
bee51209 L |
163 | to use for stringops on unknown size. */ |
164 | struct stringop_algs memcpy[2], memset[2]; | |
e70444a8 HJ |
165 | const int scalar_stmt_cost; /* Cost of any scalar operation, excluding |
166 | load and store. */ | |
167 | const int scalar_load_cost; /* Cost of scalar load. */ | |
168 | const int scalar_store_cost; /* Cost of scalar store. */ | |
169 | const int vec_stmt_cost; /* Cost of any vector operation, excluding | |
170 | load, store, vector-to-scalar and | |
171 | scalar-to-vector operation. */ | |
172 | const int vec_to_scalar_cost; /* Cost of vect-to-scalar operation. */ | |
173 | const int scalar_to_vec_cost; /* Cost of scalar-to-vector operation. */ | |
4f3f76e6 | 174 | const int vec_align_load_cost; /* Cost of aligned vector load. */ |
e70444a8 HJ |
175 | const int vec_unalign_load_cost; /* Cost of unaligned vector load. */ |
176 | const int vec_store_cost; /* Cost of vector store. */ | |
177 | const int cond_taken_branch_cost; /* Cost of taken branch for vectorizer | |
178 | cost model. */ | |
179 | const int cond_not_taken_branch_cost;/* Cost of not taken branch for | |
180 | vectorizer cost model. */ | |
d4ba09c0 SC |
181 | }; |
182 | ||
8b60264b | 183 | extern const struct processor_costs *ix86_cost; |
b2077fd2 JH |
184 | extern const struct processor_costs ix86_size_cost; |
185 | ||
186 | #define ix86_cur_cost() \ | |
187 | (optimize_insn_for_size_p () ? &ix86_size_cost: ix86_cost) | |
d4ba09c0 | 188 | |
c98f8742 JVA |
189 | /* Macros used in the machine description to test the flags. */ |
190 | ||
ddd5a7c1 | 191 | /* configure can arrange to make this 2, to force a 486. */ |
e075ae69 | 192 | |
35b528be | 193 | #ifndef TARGET_CPU_DEFAULT |
d326eaf0 | 194 | #define TARGET_CPU_DEFAULT TARGET_CPU_DEFAULT_generic |
10e9fecc | 195 | #endif |
35b528be | 196 | |
004d3859 GK |
197 | #ifndef TARGET_FPMATH_DEFAULT |
198 | #define TARGET_FPMATH_DEFAULT \ | |
199 | (TARGET_64BIT && TARGET_SSE ? FPMATH_SSE : FPMATH_387) | |
200 | #endif | |
201 | ||
6ac49599 | 202 | #define TARGET_FLOAT_RETURNS_IN_80387 TARGET_FLOAT_RETURNS |
b08de47e | 203 | |
5791cc29 JT |
204 | /* 64bit Sledgehammer mode. For libgcc2 we make sure this is a |
205 | compile-time constant. */ | |
206 | #ifdef IN_LIBGCC2 | |
6ac49599 | 207 | #undef TARGET_64BIT |
5791cc29 JT |
208 | #ifdef __x86_64__ |
209 | #define TARGET_64BIT 1 | |
210 | #else | |
211 | #define TARGET_64BIT 0 | |
212 | #endif | |
213 | #else | |
6ac49599 RS |
214 | #ifndef TARGET_BI_ARCH |
215 | #undef TARGET_64BIT | |
67adf6a9 | 216 | #if TARGET_64BIT_DEFAULT |
0c2dc519 JH |
217 | #define TARGET_64BIT 1 |
218 | #else | |
219 | #define TARGET_64BIT 0 | |
220 | #endif | |
221 | #endif | |
5791cc29 | 222 | #endif |
25f94bb5 | 223 | |
750054a2 CT |
224 | #define HAS_LONG_COND_BRANCH 1 |
225 | #define HAS_LONG_UNCOND_BRANCH 1 | |
226 | ||
9e555526 RH |
227 | #define TARGET_386 (ix86_tune == PROCESSOR_I386) |
228 | #define TARGET_486 (ix86_tune == PROCESSOR_I486) | |
229 | #define TARGET_PENTIUM (ix86_tune == PROCESSOR_PENTIUM) | |
230 | #define TARGET_PENTIUMPRO (ix86_tune == PROCESSOR_PENTIUMPRO) | |
cfe1b18f | 231 | #define TARGET_GEODE (ix86_tune == PROCESSOR_GEODE) |
9e555526 RH |
232 | #define TARGET_K6 (ix86_tune == PROCESSOR_K6) |
233 | #define TARGET_ATHLON (ix86_tune == PROCESSOR_ATHLON) | |
234 | #define TARGET_PENTIUM4 (ix86_tune == PROCESSOR_PENTIUM4) | |
235 | #define TARGET_K8 (ix86_tune == PROCESSOR_K8) | |
4977bab6 | 236 | #define TARGET_ATHLON_K8 (TARGET_K8 || TARGET_ATHLON) |
89c43c0a | 237 | #define TARGET_NOCONA (ix86_tune == PROCESSOR_NOCONA) |
ab247762 MK |
238 | #define TARGET_CORE2_32 (ix86_tune == PROCESSOR_CORE2_32) |
239 | #define TARGET_CORE2_64 (ix86_tune == PROCESSOR_CORE2_64) | |
240 | #define TARGET_CORE2 (TARGET_CORE2_32 || TARGET_CORE2_64) | |
b2b01543 BS |
241 | #define TARGET_COREI7_32 (ix86_tune == PROCESSOR_COREI7_32) |
242 | #define TARGET_COREI7_64 (ix86_tune == PROCESSOR_COREI7_64) | |
243 | #define TARGET_COREI7 (TARGET_COREI7_32 || TARGET_COREI7_64) | |
d326eaf0 JH |
244 | #define TARGET_GENERIC32 (ix86_tune == PROCESSOR_GENERIC32) |
245 | #define TARGET_GENERIC64 (ix86_tune == PROCESSOR_GENERIC64) | |
246 | #define TARGET_GENERIC (TARGET_GENERIC32 || TARGET_GENERIC64) | |
21efb4d4 | 247 | #define TARGET_AMDFAM10 (ix86_tune == PROCESSOR_AMDFAM10) |
1133125e | 248 | #define TARGET_BDVER1 (ix86_tune == PROCESSOR_BDVER1) |
4d652a18 | 249 | #define TARGET_BDVER2 (ix86_tune == PROCESSOR_BDVER2) |
14b52538 | 250 | #define TARGET_BTVER1 (ix86_tune == PROCESSOR_BTVER1) |
b6837b94 | 251 | #define TARGET_ATOM (ix86_tune == PROCESSOR_ATOM) |
a269a03c | 252 | |
80fd744f RH |
253 | /* Feature tests against the various tunings. */ |
254 | enum ix86_tune_indices { | |
255 | X86_TUNE_USE_LEAVE, | |
256 | X86_TUNE_PUSH_MEMORY, | |
257 | X86_TUNE_ZERO_EXTEND_WITH_AND, | |
80fd744f | 258 | X86_TUNE_UNROLL_STRLEN, |
80fd744f RH |
259 | X86_TUNE_BRANCH_PREDICTION_HINTS, |
260 | X86_TUNE_DOUBLE_WITH_ADD, | |
3c2d980c | 261 | X86_TUNE_USE_SAHF, |
80fd744f RH |
262 | X86_TUNE_MOVX, |
263 | X86_TUNE_PARTIAL_REG_STALL, | |
264 | X86_TUNE_PARTIAL_FLAG_REG_STALL, | |
7b38ee83 | 265 | X86_TUNE_LCP_STALL, |
80fd744f RH |
266 | X86_TUNE_USE_HIMODE_FIOP, |
267 | X86_TUNE_USE_SIMODE_FIOP, | |
268 | X86_TUNE_USE_MOV0, | |
269 | X86_TUNE_USE_CLTD, | |
270 | X86_TUNE_USE_XCHGB, | |
271 | X86_TUNE_SPLIT_LONG_MOVES, | |
272 | X86_TUNE_READ_MODIFY_WRITE, | |
273 | X86_TUNE_READ_MODIFY, | |
274 | X86_TUNE_PROMOTE_QIMODE, | |
275 | X86_TUNE_FAST_PREFIX, | |
276 | X86_TUNE_SINGLE_STRINGOP, | |
277 | X86_TUNE_QIMODE_MATH, | |
278 | X86_TUNE_HIMODE_MATH, | |
279 | X86_TUNE_PROMOTE_QI_REGS, | |
280 | X86_TUNE_PROMOTE_HI_REGS, | |
d8b08ecd UB |
281 | X86_TUNE_SINGLE_POP, |
282 | X86_TUNE_DOUBLE_POP, | |
283 | X86_TUNE_SINGLE_PUSH, | |
284 | X86_TUNE_DOUBLE_PUSH, | |
80fd744f RH |
285 | X86_TUNE_INTEGER_DFMODE_MOVES, |
286 | X86_TUNE_PARTIAL_REG_DEPENDENCY, | |
287 | X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY, | |
1133125e HJ |
288 | X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL, |
289 | X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL, | |
290 | X86_TUNE_SSE_PACKED_SINGLE_INSN_OPTIMAL, | |
80fd744f RH |
291 | X86_TUNE_SSE_SPLIT_REGS, |
292 | X86_TUNE_SSE_TYPELESS_STORES, | |
293 | X86_TUNE_SSE_LOAD0_BY_PXOR, | |
294 | X86_TUNE_MEMORY_MISMATCH_STALL, | |
295 | X86_TUNE_PROLOGUE_USING_MOVE, | |
296 | X86_TUNE_EPILOGUE_USING_MOVE, | |
297 | X86_TUNE_SHIFT1, | |
298 | X86_TUNE_USE_FFREEP, | |
299 | X86_TUNE_INTER_UNIT_MOVES, | |
630ecd8d | 300 | X86_TUNE_INTER_UNIT_CONVERSIONS, |
80fd744f RH |
301 | X86_TUNE_FOUR_JUMP_LIMIT, |
302 | X86_TUNE_SCHEDULE, | |
303 | X86_TUNE_USE_BT, | |
304 | X86_TUNE_USE_INCDEC, | |
305 | X86_TUNE_PAD_RETURNS, | |
e7ed95a2 | 306 | X86_TUNE_PAD_SHORT_FUNCTION, |
80fd744f | 307 | X86_TUNE_EXT_80387_CONSTANTS, |
ddff69b9 MM |
308 | X86_TUNE_SHORTEN_X87_SSE, |
309 | X86_TUNE_AVOID_VECTOR_DECODE, | |
a646aded | 310 | X86_TUNE_PROMOTE_HIMODE_IMUL, |
ddff69b9 MM |
311 | X86_TUNE_SLOW_IMUL_IMM32_MEM, |
312 | X86_TUNE_SLOW_IMUL_IMM8, | |
313 | X86_TUNE_MOVE_M1_VIA_OR, | |
314 | X86_TUNE_NOT_UNPAIRABLE, | |
315 | X86_TUNE_NOT_VECTORMODE, | |
54723b46 | 316 | X86_TUNE_USE_VECTOR_FP_CONVERTS, |
4e9d897d | 317 | X86_TUNE_USE_VECTOR_CONVERTS, |
354f84af | 318 | X86_TUNE_FUSE_CMP_AND_BRANCH, |
b6837b94 | 319 | X86_TUNE_OPT_AGU, |
e72eba85 | 320 | X86_TUNE_VECTORIZE_DOUBLE, |
5d0878e7 | 321 | X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL, |
5c0d88e6 | 322 | X86_TUNE_AVX128_OPTIMAL, |
df7b0cc4 EI |
323 | X86_TUNE_REASSOC_INT_TO_PARALLEL, |
324 | X86_TUNE_REASSOC_FP_TO_PARALLEL, | |
80fd744f RH |
325 | |
326 | X86_TUNE_LAST | |
327 | }; | |
328 | ||
ab442df7 | 329 | extern unsigned char ix86_tune_features[X86_TUNE_LAST]; |
80fd744f RH |
330 | |
331 | #define TARGET_USE_LEAVE ix86_tune_features[X86_TUNE_USE_LEAVE] | |
332 | #define TARGET_PUSH_MEMORY ix86_tune_features[X86_TUNE_PUSH_MEMORY] | |
333 | #define TARGET_ZERO_EXTEND_WITH_AND \ | |
334 | ix86_tune_features[X86_TUNE_ZERO_EXTEND_WITH_AND] | |
80fd744f | 335 | #define TARGET_UNROLL_STRLEN ix86_tune_features[X86_TUNE_UNROLL_STRLEN] |
80fd744f RH |
336 | #define TARGET_BRANCH_PREDICTION_HINTS \ |
337 | ix86_tune_features[X86_TUNE_BRANCH_PREDICTION_HINTS] | |
338 | #define TARGET_DOUBLE_WITH_ADD ix86_tune_features[X86_TUNE_DOUBLE_WITH_ADD] | |
339 | #define TARGET_USE_SAHF ix86_tune_features[X86_TUNE_USE_SAHF] | |
340 | #define TARGET_MOVX ix86_tune_features[X86_TUNE_MOVX] | |
341 | #define TARGET_PARTIAL_REG_STALL ix86_tune_features[X86_TUNE_PARTIAL_REG_STALL] | |
342 | #define TARGET_PARTIAL_FLAG_REG_STALL \ | |
343 | ix86_tune_features[X86_TUNE_PARTIAL_FLAG_REG_STALL] | |
7b38ee83 TJ |
344 | #define TARGET_LCP_STALL \ |
345 | ix86_tune_features[X86_TUNE_LCP_STALL] | |
80fd744f RH |
346 | #define TARGET_USE_HIMODE_FIOP ix86_tune_features[X86_TUNE_USE_HIMODE_FIOP] |
347 | #define TARGET_USE_SIMODE_FIOP ix86_tune_features[X86_TUNE_USE_SIMODE_FIOP] | |
348 | #define TARGET_USE_MOV0 ix86_tune_features[X86_TUNE_USE_MOV0] | |
349 | #define TARGET_USE_CLTD ix86_tune_features[X86_TUNE_USE_CLTD] | |
350 | #define TARGET_USE_XCHGB ix86_tune_features[X86_TUNE_USE_XCHGB] | |
351 | #define TARGET_SPLIT_LONG_MOVES ix86_tune_features[X86_TUNE_SPLIT_LONG_MOVES] | |
352 | #define TARGET_READ_MODIFY_WRITE ix86_tune_features[X86_TUNE_READ_MODIFY_WRITE] | |
353 | #define TARGET_READ_MODIFY ix86_tune_features[X86_TUNE_READ_MODIFY] | |
354 | #define TARGET_PROMOTE_QImode ix86_tune_features[X86_TUNE_PROMOTE_QIMODE] | |
355 | #define TARGET_FAST_PREFIX ix86_tune_features[X86_TUNE_FAST_PREFIX] | |
356 | #define TARGET_SINGLE_STRINGOP ix86_tune_features[X86_TUNE_SINGLE_STRINGOP] | |
357 | #define TARGET_QIMODE_MATH ix86_tune_features[X86_TUNE_QIMODE_MATH] | |
358 | #define TARGET_HIMODE_MATH ix86_tune_features[X86_TUNE_HIMODE_MATH] | |
359 | #define TARGET_PROMOTE_QI_REGS ix86_tune_features[X86_TUNE_PROMOTE_QI_REGS] | |
360 | #define TARGET_PROMOTE_HI_REGS ix86_tune_features[X86_TUNE_PROMOTE_HI_REGS] | |
d8b08ecd UB |
361 | #define TARGET_SINGLE_POP ix86_tune_features[X86_TUNE_SINGLE_POP] |
362 | #define TARGET_DOUBLE_POP ix86_tune_features[X86_TUNE_DOUBLE_POP] | |
363 | #define TARGET_SINGLE_PUSH ix86_tune_features[X86_TUNE_SINGLE_PUSH] | |
364 | #define TARGET_DOUBLE_PUSH ix86_tune_features[X86_TUNE_DOUBLE_PUSH] | |
80fd744f RH |
365 | #define TARGET_INTEGER_DFMODE_MOVES \ |
366 | ix86_tune_features[X86_TUNE_INTEGER_DFMODE_MOVES] | |
367 | #define TARGET_PARTIAL_REG_DEPENDENCY \ | |
368 | ix86_tune_features[X86_TUNE_PARTIAL_REG_DEPENDENCY] | |
369 | #define TARGET_SSE_PARTIAL_REG_DEPENDENCY \ | |
370 | ix86_tune_features[X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY] | |
1133125e HJ |
371 | #define TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \ |
372 | ix86_tune_features[X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL] | |
373 | #define TARGET_SSE_UNALIGNED_STORE_OPTIMAL \ | |
374 | ix86_tune_features[X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL] | |
375 | #define TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL \ | |
376 | ix86_tune_features[X86_TUNE_SSE_PACKED_SINGLE_INSN_OPTIMAL] | |
80fd744f RH |
377 | #define TARGET_SSE_SPLIT_REGS ix86_tune_features[X86_TUNE_SSE_SPLIT_REGS] |
378 | #define TARGET_SSE_TYPELESS_STORES \ | |
379 | ix86_tune_features[X86_TUNE_SSE_TYPELESS_STORES] | |
380 | #define TARGET_SSE_LOAD0_BY_PXOR ix86_tune_features[X86_TUNE_SSE_LOAD0_BY_PXOR] | |
381 | #define TARGET_MEMORY_MISMATCH_STALL \ | |
382 | ix86_tune_features[X86_TUNE_MEMORY_MISMATCH_STALL] | |
383 | #define TARGET_PROLOGUE_USING_MOVE \ | |
384 | ix86_tune_features[X86_TUNE_PROLOGUE_USING_MOVE] | |
385 | #define TARGET_EPILOGUE_USING_MOVE \ | |
386 | ix86_tune_features[X86_TUNE_EPILOGUE_USING_MOVE] | |
387 | #define TARGET_SHIFT1 ix86_tune_features[X86_TUNE_SHIFT1] | |
388 | #define TARGET_USE_FFREEP ix86_tune_features[X86_TUNE_USE_FFREEP] | |
389 | #define TARGET_INTER_UNIT_MOVES ix86_tune_features[X86_TUNE_INTER_UNIT_MOVES] | |
630ecd8d JH |
390 | #define TARGET_INTER_UNIT_CONVERSIONS\ |
391 | ix86_tune_features[X86_TUNE_INTER_UNIT_CONVERSIONS] | |
80fd744f RH |
392 | #define TARGET_FOUR_JUMP_LIMIT ix86_tune_features[X86_TUNE_FOUR_JUMP_LIMIT] |
393 | #define TARGET_SCHEDULE ix86_tune_features[X86_TUNE_SCHEDULE] | |
394 | #define TARGET_USE_BT ix86_tune_features[X86_TUNE_USE_BT] | |
395 | #define TARGET_USE_INCDEC ix86_tune_features[X86_TUNE_USE_INCDEC] | |
396 | #define TARGET_PAD_RETURNS ix86_tune_features[X86_TUNE_PAD_RETURNS] | |
e7ed95a2 L |
397 | #define TARGET_PAD_SHORT_FUNCTION \ |
398 | ix86_tune_features[X86_TUNE_PAD_SHORT_FUNCTION] | |
80fd744f RH |
399 | #define TARGET_EXT_80387_CONSTANTS \ |
400 | ix86_tune_features[X86_TUNE_EXT_80387_CONSTANTS] | |
ddff69b9 MM |
401 | #define TARGET_SHORTEN_X87_SSE ix86_tune_features[X86_TUNE_SHORTEN_X87_SSE] |
402 | #define TARGET_AVOID_VECTOR_DECODE \ | |
403 | ix86_tune_features[X86_TUNE_AVOID_VECTOR_DECODE] | |
a646aded UB |
404 | #define TARGET_TUNE_PROMOTE_HIMODE_IMUL \ |
405 | ix86_tune_features[X86_TUNE_PROMOTE_HIMODE_IMUL] | |
ddff69b9 MM |
406 | #define TARGET_SLOW_IMUL_IMM32_MEM \ |
407 | ix86_tune_features[X86_TUNE_SLOW_IMUL_IMM32_MEM] | |
408 | #define TARGET_SLOW_IMUL_IMM8 ix86_tune_features[X86_TUNE_SLOW_IMUL_IMM8] | |
409 | #define TARGET_MOVE_M1_VIA_OR ix86_tune_features[X86_TUNE_MOVE_M1_VIA_OR] | |
410 | #define TARGET_NOT_UNPAIRABLE ix86_tune_features[X86_TUNE_NOT_UNPAIRABLE] | |
411 | #define TARGET_NOT_VECTORMODE ix86_tune_features[X86_TUNE_NOT_VECTORMODE] | |
54723b46 L |
412 | #define TARGET_USE_VECTOR_FP_CONVERTS \ |
413 | ix86_tune_features[X86_TUNE_USE_VECTOR_FP_CONVERTS] | |
354f84af UB |
414 | #define TARGET_USE_VECTOR_CONVERTS \ |
415 | ix86_tune_features[X86_TUNE_USE_VECTOR_CONVERTS] | |
416 | #define TARGET_FUSE_CMP_AND_BRANCH \ | |
417 | ix86_tune_features[X86_TUNE_FUSE_CMP_AND_BRANCH] | |
b6837b94 | 418 | #define TARGET_OPT_AGU ix86_tune_features[X86_TUNE_OPT_AGU] |
e72eba85 L |
419 | #define TARGET_VECTORIZE_DOUBLE \ |
420 | ix86_tune_features[X86_TUNE_VECTORIZE_DOUBLE] | |
5d0878e7 JH |
421 | #define TARGET_SOFTWARE_PREFETCHING_BENEFICIAL \ |
422 | ix86_tune_features[X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL] | |
5c0d88e6 CF |
423 | #define TARGET_AVX128_OPTIMAL \ |
424 | ix86_tune_features[X86_TUNE_AVX128_OPTIMAL] | |
df7b0cc4 EI |
425 | #define TARGET_REASSOC_INT_TO_PARALLEL \ |
426 | ix86_tune_features[X86_TUNE_REASSOC_INT_TO_PARALLEL] | |
427 | #define TARGET_REASSOC_FP_TO_PARALLEL \ | |
428 | ix86_tune_features[X86_TUNE_REASSOC_FP_TO_PARALLEL] | |
429 | ||
80fd744f RH |
430 | /* Feature tests against the various architecture variations. */ |
431 | enum ix86_arch_indices { | |
432 | X86_ARCH_CMOVE, /* || TARGET_SSE */ | |
433 | X86_ARCH_CMPXCHG, | |
434 | X86_ARCH_CMPXCHG8B, | |
435 | X86_ARCH_XADD, | |
436 | X86_ARCH_BSWAP, | |
437 | ||
438 | X86_ARCH_LAST | |
439 | }; | |
4f3f76e6 | 440 | |
ab442df7 | 441 | extern unsigned char ix86_arch_features[X86_ARCH_LAST]; |
80fd744f RH |
442 | |
443 | #define TARGET_CMOVE ix86_arch_features[X86_ARCH_CMOVE] | |
444 | #define TARGET_CMPXCHG ix86_arch_features[X86_ARCH_CMPXCHG] | |
445 | #define TARGET_CMPXCHG8B ix86_arch_features[X86_ARCH_CMPXCHG8B] | |
446 | #define TARGET_XADD ix86_arch_features[X86_ARCH_XADD] | |
447 | #define TARGET_BSWAP ix86_arch_features[X86_ARCH_BSWAP] | |
448 | ||
449 | #define TARGET_FISTTP (TARGET_SSE3 && TARGET_80387) | |
450 | ||
451 | extern int x86_prefetch_sse; | |
0a1c5e55 | 452 | |
80fd744f RH |
453 | #define TARGET_PREFETCH_SSE x86_prefetch_sse |
454 | ||
80fd744f RH |
455 | #define ASSEMBLER_DIALECT (ix86_asm_dialect) |
456 | ||
457 | #define TARGET_SSE_MATH ((ix86_fpmath & FPMATH_SSE) != 0) | |
458 | #define TARGET_MIX_SSE_I387 \ | |
459 | ((ix86_fpmath & (FPMATH_SSE | FPMATH_387)) == (FPMATH_SSE | FPMATH_387)) | |
460 | ||
461 | #define TARGET_GNU_TLS (ix86_tls_dialect == TLS_DIALECT_GNU) | |
462 | #define TARGET_GNU2_TLS (ix86_tls_dialect == TLS_DIALECT_GNU2) | |
463 | #define TARGET_ANY_GNU_TLS (TARGET_GNU_TLS || TARGET_GNU2_TLS) | |
d2af65b9 | 464 | #define TARGET_SUN_TLS 0 |
1ef45b77 | 465 | |
67adf6a9 RH |
466 | #ifndef TARGET_64BIT_DEFAULT |
467 | #define TARGET_64BIT_DEFAULT 0 | |
25f94bb5 | 468 | #endif |
74dc3e94 RH |
469 | #ifndef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT |
470 | #define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT 0 | |
471 | #endif | |
25f94bb5 | 472 | |
79f5e442 ZD |
473 | /* Fence to use after loop using storent. */ |
474 | ||
475 | extern tree x86_mfence; | |
476 | #define FENCE_FOLLOWING_MOVNT x86_mfence | |
477 | ||
0ed4a390 JL |
478 | /* Once GDB has been enhanced to deal with functions without frame |
479 | pointers, we can change this to allow for elimination of | |
480 | the frame pointer in leaf functions. */ | |
481 | #define TARGET_DEFAULT 0 | |
67adf6a9 | 482 | |
0a1c5e55 UB |
483 | /* Extra bits to force. */ |
484 | #define TARGET_SUBTARGET_DEFAULT 0 | |
485 | #define TARGET_SUBTARGET_ISA_DEFAULT 0 | |
486 | ||
487 | /* Extra bits to force on w/ 32-bit mode. */ | |
488 | #define TARGET_SUBTARGET32_DEFAULT 0 | |
489 | #define TARGET_SUBTARGET32_ISA_DEFAULT 0 | |
490 | ||
ccf8e764 RH |
491 | /* Extra bits to force on w/ 64-bit mode. */ |
492 | #define TARGET_SUBTARGET64_DEFAULT 0 | |
0a1c5e55 | 493 | #define TARGET_SUBTARGET64_ISA_DEFAULT 0 |
ccf8e764 | 494 | |
fee3eacd IS |
495 | /* Replace MACH-O, ifdefs by in-line tests, where possible. |
496 | (a) Macros defined in config/i386/darwin.h */ | |
b069de3b | 497 | #define TARGET_MACHO 0 |
9005471b | 498 | #define TARGET_MACHO_BRANCH_ISLANDS 0 |
fee3eacd IS |
499 | #define MACHOPIC_ATT_STUB 0 |
500 | /* (b) Macros defined in config/darwin.h */ | |
501 | #define MACHO_DYNAMIC_NO_PIC_P 0 | |
502 | #define MACHOPIC_INDIRECT 0 | |
503 | #define MACHOPIC_PURE 0 | |
9005471b IS |
504 | |
505 | /* For the Windows 64-bit ABI. */ | |
7c800926 KT |
506 | #define TARGET_64BIT_MS_ABI (TARGET_64BIT && ix86_cfun_abi () == MS_ABI) |
507 | ||
6510e8bb KT |
508 | /* For the Windows 32-bit ABI. */ |
509 | #define TARGET_32BIT_MS_ABI (!TARGET_64BIT && ix86_cfun_abi () == MS_ABI) | |
510 | ||
f81c9774 RH |
511 | /* This is re-defined by cygming.h. */ |
512 | #define TARGET_SEH 0 | |
513 | ||
51212b32 | 514 | /* The default abi used by target. */ |
7c800926 | 515 | #define DEFAULT_ABI SYSV_ABI |
ccf8e764 | 516 | |
cc69336f RH |
517 | /* Subtargets may reset this to 1 in order to enable 96-bit long double |
518 | with the rounding mode forced to 53 bits. */ | |
519 | #define TARGET_96_ROUND_53_LONG_DOUBLE 0 | |
520 | ||
682cd442 GK |
521 | /* -march=native handling only makes sense with compiler running on |
522 | an x86 or x86_64 chip. If changing this condition, also change | |
523 | the condition in driver-i386.c. */ | |
524 | #if defined(__i386__) || defined(__x86_64__) | |
fa959ce4 MM |
525 | /* In driver-i386.c. */ |
526 | extern const char *host_detect_local_cpu (int argc, const char **argv); | |
527 | #define EXTRA_SPEC_FUNCTIONS \ | |
528 | { "local_cpu_detect", host_detect_local_cpu }, | |
682cd442 | 529 | #define HAVE_LOCAL_CPU_DETECT |
fa959ce4 MM |
530 | #endif |
531 | ||
8981c15b JM |
532 | #if TARGET_64BIT_DEFAULT |
533 | #define OPT_ARCH64 "!m32" | |
534 | #define OPT_ARCH32 "m32" | |
535 | #else | |
f0ea7581 L |
536 | #define OPT_ARCH64 "m64|mx32" |
537 | #define OPT_ARCH32 "m64|mx32:;" | |
8981c15b JM |
538 | #endif |
539 | ||
1cba2b96 EC |
540 | /* Support for configure-time defaults of some command line options. |
541 | The order here is important so that -march doesn't squash the | |
542 | tune or cpu values. */ | |
ce998900 | 543 | #define OPTION_DEFAULT_SPECS \ |
da2d4c01 | 544 | {"tune", "%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}" }, \ |
8981c15b JM |
545 | {"tune_32", "%{" OPT_ARCH32 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ |
546 | {"tune_64", "%{" OPT_ARCH64 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ | |
ce998900 | 547 | {"cpu", "%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}" }, \ |
8981c15b JM |
548 | {"cpu_32", "%{" OPT_ARCH32 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ |
549 | {"cpu_64", "%{" OPT_ARCH64 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ | |
550 | {"arch", "%{!march=*:-march=%(VALUE)}"}, \ | |
551 | {"arch_32", "%{" OPT_ARCH32 ":%{!march=*:-march=%(VALUE)}}"}, \ | |
552 | {"arch_64", "%{" OPT_ARCH64 ":%{!march=*:-march=%(VALUE)}}"}, | |
7816bea0 | 553 | |
241e1a89 SC |
554 | /* Specs for the compiler proper */ |
555 | ||
628714d8 | 556 | #ifndef CC1_CPU_SPEC |
eb5bb0fd | 557 | #define CC1_CPU_SPEC_1 "" |
fa959ce4 | 558 | |
682cd442 | 559 | #ifndef HAVE_LOCAL_CPU_DETECT |
fa959ce4 MM |
560 | #define CC1_CPU_SPEC CC1_CPU_SPEC_1 |
561 | #else | |
562 | #define CC1_CPU_SPEC CC1_CPU_SPEC_1 \ | |
96f5b137 L |
563 | "%{march=native:%>march=native %:local_cpu_detect(arch) \ |
564 | %{!mtune=*:%>mtune=native %:local_cpu_detect(tune)}} \ | |
565 | %{mtune=native:%>mtune=native %:local_cpu_detect(tune)}" | |
fa959ce4 | 566 | #endif |
241e1a89 | 567 | #endif |
c98f8742 | 568 | \f |
30efe578 | 569 | /* Target CPU builtins. */ |
ab442df7 MM |
570 | #define TARGET_CPU_CPP_BUILTINS() ix86_target_macros () |
571 | ||
572 | /* Target Pragmas. */ | |
573 | #define REGISTER_TARGET_PRAGMAS() ix86_register_pragmas () | |
30efe578 | 574 | |
c2f17e19 UB |
575 | enum target_cpu_default |
576 | { | |
577 | TARGET_CPU_DEFAULT_generic = 0, | |
578 | ||
579 | TARGET_CPU_DEFAULT_i386, | |
580 | TARGET_CPU_DEFAULT_i486, | |
581 | TARGET_CPU_DEFAULT_pentium, | |
582 | TARGET_CPU_DEFAULT_pentium_mmx, | |
583 | TARGET_CPU_DEFAULT_pentiumpro, | |
584 | TARGET_CPU_DEFAULT_pentium2, | |
585 | TARGET_CPU_DEFAULT_pentium3, | |
586 | TARGET_CPU_DEFAULT_pentium4, | |
587 | TARGET_CPU_DEFAULT_pentium_m, | |
588 | TARGET_CPU_DEFAULT_prescott, | |
589 | TARGET_CPU_DEFAULT_nocona, | |
590 | TARGET_CPU_DEFAULT_core2, | |
9d8477b6 | 591 | TARGET_CPU_DEFAULT_corei7, |
b6837b94 | 592 | TARGET_CPU_DEFAULT_atom, |
c2f17e19 UB |
593 | |
594 | TARGET_CPU_DEFAULT_geode, | |
595 | TARGET_CPU_DEFAULT_k6, | |
596 | TARGET_CPU_DEFAULT_k6_2, | |
597 | TARGET_CPU_DEFAULT_k6_3, | |
598 | TARGET_CPU_DEFAULT_athlon, | |
599 | TARGET_CPU_DEFAULT_athlon_sse, | |
600 | TARGET_CPU_DEFAULT_k8, | |
601 | TARGET_CPU_DEFAULT_amdfam10, | |
1133125e | 602 | TARGET_CPU_DEFAULT_bdver1, |
4d652a18 | 603 | TARGET_CPU_DEFAULT_bdver2, |
14b52538 | 604 | TARGET_CPU_DEFAULT_btver1, |
c2f17e19 UB |
605 | |
606 | TARGET_CPU_DEFAULT_max | |
607 | }; | |
0c2dc519 | 608 | |
628714d8 | 609 | #ifndef CC1_SPEC |
8015b78d | 610 | #define CC1_SPEC "%(cc1_cpu) " |
628714d8 RK |
611 | #endif |
612 | ||
613 | /* This macro defines names of additional specifications to put in the | |
614 | specs that can be used in various specifications like CC1_SPEC. Its | |
615 | definition is an initializer with a subgrouping for each command option. | |
bcd86433 SC |
616 | |
617 | Each subgrouping contains a string constant, that defines the | |
188fc5b5 | 618 | specification name, and a string constant that used by the GCC driver |
bcd86433 SC |
619 | program. |
620 | ||
621 | Do not define this macro if it does not need to do anything. */ | |
622 | ||
623 | #ifndef SUBTARGET_EXTRA_SPECS | |
624 | #define SUBTARGET_EXTRA_SPECS | |
625 | #endif | |
626 | ||
627 | #define EXTRA_SPECS \ | |
628714d8 | 628 | { "cc1_cpu", CC1_CPU_SPEC }, \ |
bcd86433 SC |
629 | SUBTARGET_EXTRA_SPECS |
630 | \f | |
ce998900 | 631 | |
d57a4b98 RH |
632 | /* Set the value of FLT_EVAL_METHOD in float.h. When using only the |
633 | FPU, assume that the fpcw is set to extended precision; when using | |
634 | only SSE, rounding is correct; when using both SSE and the FPU, | |
635 | the rounding precision is indeterminate, since either may be chosen | |
636 | apparently at random. */ | |
637 | #define TARGET_FLT_EVAL_METHOD \ | |
5ccd517a | 638 | (TARGET_MIX_SSE_I387 ? -1 : TARGET_SSE_MATH ? 0 : 2) |
0038aea6 | 639 | |
8ce94e44 JM |
640 | /* Whether to allow x87 floating-point arithmetic on MODE (one of |
641 | SFmode, DFmode and XFmode) in the current excess precision | |
642 | configuration. */ | |
643 | #define X87_ENABLE_ARITH(MODE) \ | |
644 | (flag_excess_precision == EXCESS_PRECISION_FAST || (MODE) == XFmode) | |
645 | ||
646 | /* Likewise, whether to allow direct conversions from integer mode | |
647 | IMODE (HImode, SImode or DImode) to MODE. */ | |
648 | #define X87_ENABLE_FLOAT(MODE, IMODE) \ | |
649 | (flag_excess_precision == EXCESS_PRECISION_FAST \ | |
650 | || (MODE) == XFmode \ | |
651 | || ((MODE) == DFmode && (IMODE) == SImode) \ | |
652 | || (IMODE) == HImode) | |
653 | ||
979c67a5 UB |
654 | /* target machine storage layout */ |
655 | ||
65d9c0ab JH |
656 | #define SHORT_TYPE_SIZE 16 |
657 | #define INT_TYPE_SIZE 32 | |
f0ea7581 L |
658 | #define LONG_TYPE_SIZE (TARGET_X32 ? 32 : BITS_PER_WORD) |
659 | #define POINTER_SIZE (TARGET_X32 ? 32 : BITS_PER_WORD) | |
a96ad348 | 660 | #define LONG_LONG_TYPE_SIZE 64 |
65d9c0ab | 661 | #define FLOAT_TYPE_SIZE 32 |
65d9c0ab | 662 | #define DOUBLE_TYPE_SIZE 64 |
979c67a5 UB |
663 | #define LONG_DOUBLE_TYPE_SIZE 80 |
664 | ||
665 | #define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE | |
65d9c0ab | 666 | |
67adf6a9 | 667 | #if defined (TARGET_BI_ARCH) || TARGET_64BIT_DEFAULT |
0c2dc519 | 668 | #define MAX_BITS_PER_WORD 64 |
0c2dc519 JH |
669 | #else |
670 | #define MAX_BITS_PER_WORD 32 | |
0c2dc519 JH |
671 | #endif |
672 | ||
c98f8742 JVA |
673 | /* Define this if most significant byte of a word is the lowest numbered. */ |
674 | /* That is true on the 80386. */ | |
675 | ||
676 | #define BITS_BIG_ENDIAN 0 | |
677 | ||
678 | /* Define this if most significant byte of a word is the lowest numbered. */ | |
679 | /* That is not true on the 80386. */ | |
680 | #define BYTES_BIG_ENDIAN 0 | |
681 | ||
682 | /* Define this if most significant word of a multiword number is the lowest | |
683 | numbered. */ | |
684 | /* Not true for 80386 */ | |
685 | #define WORDS_BIG_ENDIAN 0 | |
686 | ||
c98f8742 | 687 | /* Width of a word, in units (bytes). */ |
4ae8027b | 688 | #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4) |
63001560 UB |
689 | |
690 | #ifndef IN_LIBGCC2 | |
2e64c636 JH |
691 | #define MIN_UNITS_PER_WORD 4 |
692 | #endif | |
c98f8742 | 693 | |
c98f8742 | 694 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
65d9c0ab | 695 | #define PARM_BOUNDARY BITS_PER_WORD |
c98f8742 | 696 | |
e075ae69 | 697 | /* Boundary (in *bits*) on which stack pointer should be aligned. */ |
4ae8027b | 698 | #define STACK_BOUNDARY \ |
51212b32 | 699 | (TARGET_64BIT && ix86_abi == MS_ABI ? 128 : BITS_PER_WORD) |
c98f8742 | 700 | |
2e3f842f L |
701 | /* Stack boundary of the main function guaranteed by OS. */ |
702 | #define MAIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32) | |
703 | ||
de1132d1 L |
704 | /* Minimum stack boundary. */ |
705 | #define MIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32) | |
2e3f842f | 706 | |
d1f87653 | 707 | /* Boundary (in *bits*) on which the stack pointer prefers to be |
3af4bd89 | 708 | aligned; the compiler cannot rely on having this alignment. */ |
e075ae69 | 709 | #define PREFERRED_STACK_BOUNDARY ix86_preferred_stack_boundary |
65954bd8 | 710 | |
de1132d1 | 711 | /* It should be MIN_STACK_BOUNDARY. But we set it to 128 bits for |
2e3f842f L |
712 | both 32bit and 64bit, to support codes that need 128 bit stack |
713 | alignment for SSE instructions, but can't realign the stack. */ | |
714 | #define PREFERRED_STACK_BOUNDARY_DEFAULT 128 | |
715 | ||
716 | /* 1 if -mstackrealign should be turned on by default. It will | |
717 | generate an alternate prologue and epilogue that realigns the | |
718 | runtime stack if nessary. This supports mixing codes that keep a | |
719 | 4-byte aligned stack, as specified by i386 psABI, with codes that | |
890b9b96 | 720 | need a 16-byte aligned stack, as required by SSE instructions. */ |
2e3f842f L |
721 | #define STACK_REALIGN_DEFAULT 0 |
722 | ||
723 | /* Boundary (in *bits*) on which the incoming stack is aligned. */ | |
724 | #define INCOMING_STACK_BOUNDARY ix86_incoming_stack_boundary | |
1d482056 | 725 | |
ebff937c SH |
726 | /* Target OS keeps a vector-aligned (128-bit, 16-byte) stack. This is |
727 | mandatory for the 64-bit ABI, and may or may not be true for other | |
728 | operating systems. */ | |
729 | #define TARGET_KEEPS_VECTOR_ALIGNED_STACK TARGET_64BIT | |
730 | ||
f963b5d9 RS |
731 | /* Minimum allocation boundary for the code of a function. */ |
732 | #define FUNCTION_BOUNDARY 8 | |
733 | ||
734 | /* C++ stores the virtual bit in the lowest bit of function pointers. */ | |
735 | #define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_pfn | |
c98f8742 | 736 | |
c98f8742 JVA |
737 | /* Minimum size in bits of the largest boundary to which any |
738 | and all fundamental data types supported by the hardware | |
739 | might need to be aligned. No data type wants to be aligned | |
17f24ff0 | 740 | rounder than this. |
fce5a9f2 | 741 | |
d1f87653 | 742 | Pentium+ prefers DFmode values to be aligned to 64 bit boundary |
17f24ff0 JH |
743 | and Pentium Pro XFmode values at 128 bit boundaries. */ |
744 | ||
2824d6e5 | 745 | #define BIGGEST_ALIGNMENT (TARGET_AVX ? 256 : 128) |
17f24ff0 | 746 | |
2e3f842f L |
747 | /* Maximum stack alignment. */ |
748 | #define MAX_STACK_ALIGNMENT MAX_OFILE_ALIGNMENT | |
749 | ||
6e4f1168 L |
750 | /* Alignment value for attribute ((aligned)). It is a constant since |
751 | it is the part of the ABI. We shouldn't change it with -mavx. */ | |
752 | #define ATTRIBUTE_ALIGNED_VALUE 128 | |
753 | ||
822eda12 | 754 | /* Decide whether a variable of mode MODE should be 128 bit aligned. */ |
a7180f70 | 755 | #define ALIGN_MODE_128(MODE) \ |
4501d314 | 756 | ((MODE) == XFmode || SSE_REG_MODE_P (MODE)) |
a7180f70 | 757 | |
17f24ff0 | 758 | /* The published ABIs say that doubles should be aligned on word |
d1f87653 | 759 | boundaries, so lower the alignment for structure fields unless |
6fc605d8 | 760 | -malign-double is set. */ |
e932b21b | 761 | |
e83f3cff RH |
762 | /* ??? Blah -- this macro is used directly by libobjc. Since it |
763 | supports no vector modes, cut out the complexity and fall back | |
764 | on BIGGEST_FIELD_ALIGNMENT. */ | |
765 | #ifdef IN_TARGET_LIBS | |
ef49d42e JH |
766 | #ifdef __x86_64__ |
767 | #define BIGGEST_FIELD_ALIGNMENT 128 | |
768 | #else | |
e83f3cff | 769 | #define BIGGEST_FIELD_ALIGNMENT 32 |
ef49d42e | 770 | #endif |
e83f3cff | 771 | #else |
e932b21b JH |
772 | #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ |
773 | x86_field_alignment (FIELD, COMPUTED) | |
e83f3cff | 774 | #endif |
c98f8742 | 775 | |
e5e8a8bf | 776 | /* If defined, a C expression to compute the alignment given to a |
a7180f70 | 777 | constant that is being placed in memory. EXP is the constant |
e5e8a8bf JW |
778 | and ALIGN is the alignment that the object would ordinarily have. |
779 | The value of this macro is used instead of that alignment to align | |
780 | the object. | |
781 | ||
782 | If this macro is not defined, then ALIGN is used. | |
783 | ||
784 | The typical use of this macro is to increase alignment for string | |
785 | constants to be word aligned so that `strcpy' calls that copy | |
786 | constants can be done inline. */ | |
787 | ||
d9a5f180 | 788 | #define CONSTANT_ALIGNMENT(EXP, ALIGN) ix86_constant_alignment ((EXP), (ALIGN)) |
d4ba09c0 | 789 | |
8a022443 JW |
790 | /* If defined, a C expression to compute the alignment for a static |
791 | variable. TYPE is the data type, and ALIGN is the alignment that | |
792 | the object would ordinarily have. The value of this macro is used | |
793 | instead of that alignment to align the object. | |
794 | ||
795 | If this macro is not defined, then ALIGN is used. | |
796 | ||
797 | One use of this macro is to increase alignment of medium-size | |
798 | data to make it all fit in fewer cache lines. Another is to | |
799 | cause character arrays to be word-aligned so that `strcpy' calls | |
800 | that copy constants to character arrays can be done inline. */ | |
801 | ||
d9a5f180 | 802 | #define DATA_ALIGNMENT(TYPE, ALIGN) ix86_data_alignment ((TYPE), (ALIGN)) |
d16790f2 JW |
803 | |
804 | /* If defined, a C expression to compute the alignment for a local | |
805 | variable. TYPE is the data type, and ALIGN is the alignment that | |
806 | the object would ordinarily have. The value of this macro is used | |
807 | instead of that alignment to align the object. | |
808 | ||
809 | If this macro is not defined, then ALIGN is used. | |
810 | ||
811 | One use of this macro is to increase alignment of medium-size | |
812 | data to make it all fit in fewer cache lines. */ | |
813 | ||
76fe54f0 L |
814 | #define LOCAL_ALIGNMENT(TYPE, ALIGN) \ |
815 | ix86_local_alignment ((TYPE), VOIDmode, (ALIGN)) | |
816 | ||
817 | /* If defined, a C expression to compute the alignment for stack slot. | |
818 | TYPE is the data type, MODE is the widest mode available, and ALIGN | |
819 | is the alignment that the slot would ordinarily have. The value of | |
820 | this macro is used instead of that alignment to align the slot. | |
821 | ||
822 | If this macro is not defined, then ALIGN is used when TYPE is NULL, | |
823 | Otherwise, LOCAL_ALIGNMENT will be used. | |
824 | ||
825 | One use of this macro is to set alignment of stack slot to the | |
826 | maximum alignment of all possible modes which the slot may have. */ | |
827 | ||
828 | #define STACK_SLOT_ALIGNMENT(TYPE, MODE, ALIGN) \ | |
829 | ix86_local_alignment ((TYPE), (MODE), (ALIGN)) | |
8a022443 | 830 | |
9bfaf89d JJ |
831 | /* If defined, a C expression to compute the alignment for a local |
832 | variable DECL. | |
833 | ||
834 | If this macro is not defined, then | |
835 | LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) will be used. | |
836 | ||
837 | One use of this macro is to increase alignment of medium-size | |
838 | data to make it all fit in fewer cache lines. */ | |
839 | ||
840 | #define LOCAL_DECL_ALIGNMENT(DECL) \ | |
841 | ix86_local_alignment ((DECL), VOIDmode, DECL_ALIGN (DECL)) | |
842 | ||
ae58e548 JJ |
843 | /* If defined, a C expression to compute the minimum required alignment |
844 | for dynamic stack realignment purposes for EXP (a TYPE or DECL), | |
845 | MODE, assuming normal alignment ALIGN. | |
846 | ||
847 | If this macro is not defined, then (ALIGN) will be used. */ | |
848 | ||
849 | #define MINIMUM_ALIGNMENT(EXP, MODE, ALIGN) \ | |
850 | ix86_minimum_alignment (EXP, MODE, ALIGN) | |
851 | ||
9bfaf89d | 852 | |
9cd10576 | 853 | /* Set this nonzero if move instructions will actually fail to work |
c98f8742 | 854 | when given unaligned data. */ |
b4ac57ab | 855 | #define STRICT_ALIGNMENT 0 |
c98f8742 JVA |
856 | |
857 | /* If bit field type is int, don't let it cross an int, | |
858 | and give entire struct the alignment of an int. */ | |
43a88a8c | 859 | /* Required on the 386 since it doesn't have bit-field insns. */ |
c98f8742 | 860 | #define PCC_BITFIELD_TYPE_MATTERS 1 |
c98f8742 JVA |
861 | \f |
862 | /* Standard register usage. */ | |
863 | ||
864 | /* This processor has special stack-like registers. See reg-stack.c | |
892a2d68 | 865 | for details. */ |
c98f8742 JVA |
866 | |
867 | #define STACK_REGS | |
ce998900 | 868 | |
d9a5f180 | 869 | #define IS_STACK_MODE(MODE) \ |
63001560 UB |
870 | (((MODE) == SFmode && !(TARGET_SSE && TARGET_SSE_MATH)) \ |
871 | || ((MODE) == DFmode && !(TARGET_SSE2 && TARGET_SSE_MATH)) \ | |
b5c82fa1 | 872 | || (MODE) == XFmode) |
c98f8742 JVA |
873 | |
874 | /* Number of actual hardware registers. | |
875 | The hardware registers are assigned numbers for the compiler | |
876 | from 0 to just below FIRST_PSEUDO_REGISTER. | |
877 | All registers that the compiler knows about must be given numbers, | |
878 | even those that are not normally considered general registers. | |
879 | ||
880 | In the 80386 we give the 8 general purpose registers the numbers 0-7. | |
881 | We number the floating point registers 8-15. | |
882 | Note that registers 0-7 can be accessed as a short or int, | |
883 | while only 0-3 may be used with byte `mov' instructions. | |
884 | ||
885 | Reg 16 does not correspond to any hardware register, but instead | |
886 | appears in the RTL as an argument pointer prior to reload, and is | |
887 | eliminated during reloading in favor of either the stack or frame | |
892a2d68 | 888 | pointer. */ |
c98f8742 | 889 | |
b0d95de8 | 890 | #define FIRST_PSEUDO_REGISTER 53 |
c98f8742 | 891 | |
3073d01c ML |
892 | /* Number of hardware registers that go into the DWARF-2 unwind info. |
893 | If not defined, equals FIRST_PSEUDO_REGISTER. */ | |
894 | ||
895 | #define DWARF_FRAME_REGISTERS 17 | |
896 | ||
c98f8742 JVA |
897 | /* 1 for registers that have pervasive standard uses |
898 | and are not available for the register allocator. | |
3f3f2124 | 899 | On the 80386, the stack pointer is such, as is the arg pointer. |
fce5a9f2 | 900 | |
3a4416fb RS |
901 | The value is zero if the register is not fixed on either 32 or |
902 | 64 bit targets, one if the register if fixed on both 32 and 64 | |
903 | bit targets, two if it is only fixed on 32bit targets and three | |
904 | if its only fixed on 64bit targets. | |
5efd84c5 | 905 | Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE. |
3f3f2124 | 906 | */ |
a7180f70 BS |
907 | #define FIXED_REGISTERS \ |
908 | /*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \ | |
3a4416fb | 909 | { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, \ |
b0d95de8 UB |
910 | /*arg,flags,fpsr,fpcr,frame*/ \ |
911 | 1, 1, 1, 1, 1, \ | |
a7180f70 BS |
912 | /*xmm0,xmm1,xmm2,xmm3,xmm4,xmm5,xmm6,xmm7*/ \ |
913 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
78168632 | 914 | /* mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7*/ \ |
3f3f2124 JH |
915 | 0, 0, 0, 0, 0, 0, 0, 0, \ |
916 | /* r8, r9, r10, r11, r12, r13, r14, r15*/ \ | |
3a4416fb | 917 | 2, 2, 2, 2, 2, 2, 2, 2, \ |
3f3f2124 | 918 | /*xmm8,xmm9,xmm10,xmm11,xmm12,xmm13,xmm14,xmm15*/ \ |
ce998900 | 919 | 2, 2, 2, 2, 2, 2, 2, 2 } |
fce5a9f2 | 920 | |
c98f8742 JVA |
921 | |
922 | /* 1 for registers not available across function calls. | |
923 | These must include the FIXED_REGISTERS and also any | |
924 | registers that can be used without being saved. | |
925 | The latter must include the registers where values are returned | |
926 | and the register where structure-value addresses are passed. | |
fce5a9f2 EC |
927 | Aside from that, you can include as many other registers as you like. |
928 | ||
9d72d996 JJ |
929 | The value is zero if the register is not call used on either 32 or |
930 | 64 bit targets, one if the register if call used on both 32 and 64 | |
931 | bit targets, two if it is only call used on 32bit targets and three | |
932 | if its only call used on 64bit targets. | |
5efd84c5 | 933 | Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE. |
3f3f2124 | 934 | */ |
a7180f70 BS |
935 | #define CALL_USED_REGISTERS \ |
936 | /*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \ | |
3a4416fb | 937 | { 1, 1, 1, 0, 3, 3, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
b0d95de8 UB |
938 | /*arg,flags,fpsr,fpcr,frame*/ \ |
939 | 1, 1, 1, 1, 1, \ | |
a7180f70 | 940 | /*xmm0,xmm1,xmm2,xmm3,xmm4,xmm5,xmm6,xmm7*/ \ |
03c259ad | 941 | 1, 1, 1, 1, 1, 1, 1, 1, \ |
78168632 | 942 | /* mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7*/ \ |
3a4416fb | 943 | 1, 1, 1, 1, 1, 1, 1, 1, \ |
3f3f2124 | 944 | /* r8, r9, r10, r11, r12, r13, r14, r15*/ \ |
3a4416fb | 945 | 1, 1, 1, 1, 2, 2, 2, 2, \ |
3f3f2124 | 946 | /*xmm8,xmm9,xmm10,xmm11,xmm12,xmm13,xmm14,xmm15*/ \ |
ce998900 | 947 | 1, 1, 1, 1, 1, 1, 1, 1 } |
c98f8742 | 948 | |
3b3c6a3f MM |
949 | /* Order in which to allocate registers. Each register must be |
950 | listed once, even those in FIXED_REGISTERS. List frame pointer | |
951 | late and fixed registers last. Note that, in general, we prefer | |
952 | registers listed in CALL_USED_REGISTERS, keeping the others | |
953 | available for storage of persistent values. | |
954 | ||
5a733826 | 955 | The ADJUST_REG_ALLOC_ORDER actually overwrite the order, |
162f023b | 956 | so this is just empty initializer for array. */ |
3b3c6a3f | 957 | |
162f023b JH |
958 | #define REG_ALLOC_ORDER \ |
959 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,\ | |
960 | 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, \ | |
961 | 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ | |
b0d95de8 | 962 | 48, 49, 50, 51, 52 } |
3b3c6a3f | 963 | |
5a733826 | 964 | /* ADJUST_REG_ALLOC_ORDER is a macro which permits reg_alloc_order |
162f023b | 965 | to be rearranged based on a particular function. When using sse math, |
03c259ad | 966 | we want to allocate SSE before x87 registers and vice versa. */ |
3b3c6a3f | 967 | |
5a733826 | 968 | #define ADJUST_REG_ALLOC_ORDER x86_order_regs_for_local_alloc () |
3b3c6a3f | 969 | |
f5316dfe | 970 | |
7c800926 KT |
971 | #define OVERRIDE_ABI_FORMAT(FNDECL) ix86_call_abi_override (FNDECL) |
972 | ||
c98f8742 JVA |
973 | /* Return number of consecutive hard regs needed starting at reg REGNO |
974 | to hold something of mode MODE. | |
975 | This is ordinarily the length in words of a value of mode MODE | |
976 | but can be less for certain modes in special long registers. | |
977 | ||
fce5a9f2 | 978 | Actually there are no two word move instructions for consecutive |
c98f8742 | 979 | registers. And only registers 0-3 may have mov byte instructions |
63001560 | 980 | applied to them. */ |
c98f8742 | 981 | |
ce998900 | 982 | #define HARD_REGNO_NREGS(REGNO, MODE) \ |
92d0fb09 JH |
983 | (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO) \ |
984 | ? (COMPLEX_MODE_P (MODE) ? 2 : 1) \ | |
f8a1ebc6 | 985 | : ((MODE) == XFmode \ |
92d0fb09 | 986 | ? (TARGET_64BIT ? 2 : 3) \ |
f8a1ebc6 | 987 | : (MODE) == XCmode \ |
92d0fb09 | 988 | ? (TARGET_64BIT ? 4 : 6) \ |
2b589241 | 989 | : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))) |
c98f8742 | 990 | |
8521c414 JM |
991 | #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) \ |
992 | ((TARGET_128BIT_LONG_DOUBLE && !TARGET_64BIT) \ | |
993 | ? (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO) \ | |
994 | ? 0 \ | |
995 | : ((MODE) == XFmode || (MODE) == XCmode)) \ | |
996 | : 0) | |
997 | ||
998 | #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) ((MODE) == XFmode ? 4 : 8) | |
999 | ||
95879c72 L |
1000 | #define VALID_AVX256_REG_MODE(MODE) \ |
1001 | ((MODE) == V32QImode || (MODE) == V16HImode || (MODE) == V8SImode \ | |
8a0436cb JJ |
1002 | || (MODE) == V4DImode || (MODE) == V2TImode || (MODE) == V8SFmode \ |
1003 | || (MODE) == V4DFmode) | |
95879c72 | 1004 | |
ce998900 UB |
1005 | #define VALID_SSE2_REG_MODE(MODE) \ |
1006 | ((MODE) == V16QImode || (MODE) == V8HImode || (MODE) == V2DFmode \ | |
1007 | || (MODE) == V2DImode || (MODE) == DFmode) | |
fbe5eb6d | 1008 | |
d9a5f180 | 1009 | #define VALID_SSE_REG_MODE(MODE) \ |
fe6ae2da UB |
1010 | ((MODE) == V1TImode || (MODE) == TImode \ |
1011 | || (MODE) == V4SFmode || (MODE) == V4SImode \ | |
ce998900 | 1012 | || (MODE) == SFmode || (MODE) == TFmode) |
a7180f70 | 1013 | |
47f339cf | 1014 | #define VALID_MMX_REG_MODE_3DNOW(MODE) \ |
ce998900 | 1015 | ((MODE) == V2SFmode || (MODE) == SFmode) |
47f339cf | 1016 | |
d9a5f180 | 1017 | #define VALID_MMX_REG_MODE(MODE) \ |
10a97ae6 UB |
1018 | ((MODE == V1DImode) || (MODE) == DImode \ |
1019 | || (MODE) == V2SImode || (MODE) == SImode \ | |
1020 | || (MODE) == V4HImode || (MODE) == V8QImode) | |
a7180f70 | 1021 | |
ce998900 UB |
1022 | #define VALID_DFP_MODE_P(MODE) \ |
1023 | ((MODE) == SDmode || (MODE) == DDmode || (MODE) == TDmode) | |
62d75179 | 1024 | |
d9a5f180 | 1025 | #define VALID_FP_MODE_P(MODE) \ |
ce998900 UB |
1026 | ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode \ |
1027 | || (MODE) == SCmode || (MODE) == DCmode || (MODE) == XCmode) \ | |
a946dd00 | 1028 | |
d9a5f180 | 1029 | #define VALID_INT_MODE_P(MODE) \ |
ce998900 UB |
1030 | ((MODE) == QImode || (MODE) == HImode || (MODE) == SImode \ |
1031 | || (MODE) == DImode \ | |
1032 | || (MODE) == CQImode || (MODE) == CHImode || (MODE) == CSImode \ | |
1033 | || (MODE) == CDImode \ | |
1034 | || (TARGET_64BIT && ((MODE) == TImode || (MODE) == CTImode \ | |
1035 | || (MODE) == TFmode || (MODE) == TCmode))) | |
a946dd00 | 1036 | |
822eda12 | 1037 | /* Return true for modes passed in SSE registers. */ |
ce998900 | 1038 | #define SSE_REG_MODE_P(MODE) \ |
fe6ae2da UB |
1039 | ((MODE) == V1TImode || (MODE) == TImode || (MODE) == V16QImode \ |
1040 | || (MODE) == TFmode || (MODE) == V8HImode || (MODE) == V2DFmode \ | |
1041 | || (MODE) == V2DImode || (MODE) == V4SFmode || (MODE) == V4SImode \ | |
1042 | || (MODE) == V32QImode || (MODE) == V16HImode || (MODE) == V8SImode \ | |
8a0436cb JJ |
1043 | || (MODE) == V4DImode || (MODE) == V8SFmode || (MODE) == V4DFmode \ |
1044 | || (MODE) == V2TImode) | |
822eda12 | 1045 | |
e075ae69 | 1046 | /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */ |
48227a2c | 1047 | |
a946dd00 | 1048 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ |
d9a5f180 | 1049 | ix86_hard_regno_mode_ok ((REGNO), (MODE)) |
c98f8742 JVA |
1050 | |
1051 | /* Value is 1 if it is a good idea to tie two pseudo registers | |
1052 | when one has mode MODE1 and one has mode MODE2. | |
1053 | If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, | |
1054 | for any hard reg, then this must be 0 for correct output. */ | |
1055 | ||
c1c5b5e3 | 1056 | #define MODES_TIEABLE_P(MODE1, MODE2) ix86_modes_tieable_p (MODE1, MODE2) |
d2836273 | 1057 | |
ff25ef99 ZD |
1058 | /* It is possible to write patterns to move flags; but until someone |
1059 | does it, */ | |
1060 | #define AVOID_CCMODE_COPIES | |
c98f8742 | 1061 | |
e075ae69 | 1062 | /* Specify the modes required to caller save a given hard regno. |
787dc842 | 1063 | We do this on i386 to prevent flags from being saved at all. |
e075ae69 | 1064 | |
787dc842 JH |
1065 | Kill any attempts to combine saving of modes. */ |
1066 | ||
d9a5f180 GS |
1067 | #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ |
1068 | (CC_REGNO_P (REGNO) ? VOIDmode \ | |
1069 | : (MODE) == VOIDmode && (NREGS) != 1 ? VOIDmode \ | |
ce998900 | 1070 | : (MODE) == VOIDmode ? choose_hard_reg_mode ((REGNO), (NREGS), false) \ |
d9a5f180 | 1071 | : (MODE) == HImode && !TARGET_PARTIAL_REG_STALL ? SImode \ |
6c6094f1 | 1072 | : (MODE) == QImode && (REGNO) > BX_REG && !TARGET_64BIT ? SImode \ |
d2836273 | 1073 | : (MODE)) |
ce998900 | 1074 | |
51ba747a RH |
1075 | /* The only ABI that saves SSE registers across calls is Win64 (thus no |
1076 | need to check the current ABI here), and with AVX enabled Win64 only | |
1077 | guarantees that the low 16 bytes are saved. */ | |
1078 | #define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) \ | |
1079 | (SSE_REGNO_P (REGNO) && GET_MODE_SIZE (MODE) > 16) | |
1080 | ||
c98f8742 JVA |
1081 | /* Specify the registers used for certain standard purposes. |
1082 | The values of these macros are register numbers. */ | |
1083 | ||
1084 | /* on the 386 the pc register is %eip, and is not usable as a general | |
1085 | register. The ordinary mov instructions won't work */ | |
1086 | /* #define PC_REGNUM */ | |
1087 | ||
1088 | /* Register to use for pushing function arguments. */ | |
1089 | #define STACK_POINTER_REGNUM 7 | |
1090 | ||
1091 | /* Base register for access to local variables of the function. */ | |
564d80f4 JH |
1092 | #define HARD_FRAME_POINTER_REGNUM 6 |
1093 | ||
1094 | /* Base register for access to local variables of the function. */ | |
b0d95de8 | 1095 | #define FRAME_POINTER_REGNUM 20 |
c98f8742 JVA |
1096 | |
1097 | /* First floating point reg */ | |
1098 | #define FIRST_FLOAT_REG 8 | |
1099 | ||
1100 | /* First & last stack-like regs */ | |
1101 | #define FIRST_STACK_REG FIRST_FLOAT_REG | |
1102 | #define LAST_STACK_REG (FIRST_FLOAT_REG + 7) | |
1103 | ||
a7180f70 BS |
1104 | #define FIRST_SSE_REG (FRAME_POINTER_REGNUM + 1) |
1105 | #define LAST_SSE_REG (FIRST_SSE_REG + 7) | |
fce5a9f2 | 1106 | |
a7180f70 BS |
1107 | #define FIRST_MMX_REG (LAST_SSE_REG + 1) |
1108 | #define LAST_MMX_REG (FIRST_MMX_REG + 7) | |
1109 | ||
3f3f2124 JH |
1110 | #define FIRST_REX_INT_REG (LAST_MMX_REG + 1) |
1111 | #define LAST_REX_INT_REG (FIRST_REX_INT_REG + 7) | |
1112 | ||
1113 | #define FIRST_REX_SSE_REG (LAST_REX_INT_REG + 1) | |
1114 | #define LAST_REX_SSE_REG (FIRST_REX_SSE_REG + 7) | |
1115 | ||
aabcd309 | 1116 | /* Override this in other tm.h files to cope with various OS lossage |
6fca22eb RH |
1117 | requiring a frame pointer. */ |
1118 | #ifndef SUBTARGET_FRAME_POINTER_REQUIRED | |
1119 | #define SUBTARGET_FRAME_POINTER_REQUIRED 0 | |
1120 | #endif | |
1121 | ||
1122 | /* Make sure we can access arbitrary call frames. */ | |
1123 | #define SETUP_FRAME_ADDRESSES() ix86_setup_frame_addresses () | |
c98f8742 JVA |
1124 | |
1125 | /* Base register for access to arguments of the function. */ | |
1126 | #define ARG_POINTER_REGNUM 16 | |
1127 | ||
c98f8742 | 1128 | /* Register to hold the addressing base for position independent |
5b43fed1 RH |
1129 | code access to data items. We don't use PIC pointer for 64bit |
1130 | mode. Define the regnum to dummy value to prevent gcc from | |
fce5a9f2 | 1131 | pessimizing code dealing with EBX. |
bd09bdeb RH |
1132 | |
1133 | To avoid clobbering a call-saved register unnecessarily, we renumber | |
1134 | the pic register when possible. The change is visible after the | |
1135 | prologue has been emitted. */ | |
1136 | ||
2e3f842f | 1137 | #define REAL_PIC_OFFSET_TABLE_REGNUM BX_REG |
bd09bdeb RH |
1138 | |
1139 | #define PIC_OFFSET_TABLE_REGNUM \ | |
7dcbf659 JH |
1140 | ((TARGET_64BIT && ix86_cmodel == CM_SMALL_PIC) \ |
1141 | || !flag_pic ? INVALID_REGNUM \ | |
bd09bdeb RH |
1142 | : reload_completed ? REGNO (pic_offset_table_rtx) \ |
1143 | : REAL_PIC_OFFSET_TABLE_REGNUM) | |
c98f8742 | 1144 | |
5fc0e5df KW |
1145 | #define GOT_SYMBOL_NAME "_GLOBAL_OFFSET_TABLE_" |
1146 | ||
c51e6d85 | 1147 | /* This is overridden by <cygwin.h>. */ |
5e062767 DS |
1148 | #define MS_AGGREGATE_RETURN 0 |
1149 | ||
61fec9ff | 1150 | #define KEEP_AGGREGATE_RETURN_POINTER 0 |
c98f8742 JVA |
1151 | \f |
1152 | /* Define the classes of registers for register constraints in the | |
1153 | machine description. Also define ranges of constants. | |
1154 | ||
1155 | One of the classes must always be named ALL_REGS and include all hard regs. | |
1156 | If there is more than one class, another class must be named NO_REGS | |
1157 | and contain no registers. | |
1158 | ||
1159 | The name GENERAL_REGS must be the name of a class (or an alias for | |
1160 | another name such as ALL_REGS). This is the class of registers | |
1161 | that is allowed by "g" or "r" in a register constraint. | |
1162 | Also, registers outside this class are allocated only when | |
1163 | instructions express preferences for them. | |
1164 | ||
1165 | The classes must be numbered in nondecreasing order; that is, | |
1166 | a larger-numbered class must never be contained completely | |
1167 | in a smaller-numbered class. | |
1168 | ||
1169 | For any two classes, it is very desirable that there be another | |
ab408a86 JVA |
1170 | class that represents their union. |
1171 | ||
1172 | It might seem that class BREG is unnecessary, since no useful 386 | |
1173 | opcode needs reg %ebx. But some systems pass args to the OS in ebx, | |
e075ae69 RH |
1174 | and the "b" register constraint is useful in asms for syscalls. |
1175 | ||
03c259ad | 1176 | The flags, fpsr and fpcr registers are in no class. */ |
c98f8742 JVA |
1177 | |
1178 | enum reg_class | |
1179 | { | |
1180 | NO_REGS, | |
e075ae69 | 1181 | AREG, DREG, CREG, BREG, SIREG, DIREG, |
4b71cd6e | 1182 | AD_REGS, /* %eax/%edx for DImode */ |
ac2e563f | 1183 | CLOBBERED_REGS, /* call-clobbered integers */ |
c98f8742 | 1184 | Q_REGS, /* %eax %ebx %ecx %edx */ |
564d80f4 | 1185 | NON_Q_REGS, /* %esi %edi %ebp %esp */ |
c98f8742 | 1186 | INDEX_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp */ |
3f3f2124 | 1187 | LEGACY_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp %esp */ |
63001560 UB |
1188 | GENERAL_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp %esp |
1189 | %r8 %r9 %r10 %r11 %r12 %r13 %r14 %r15 */ | |
c98f8742 JVA |
1190 | FP_TOP_REG, FP_SECOND_REG, /* %st(0) %st(1) */ |
1191 | FLOAT_REGS, | |
06f4e35d | 1192 | SSE_FIRST_REG, |
a7180f70 BS |
1193 | SSE_REGS, |
1194 | MMX_REGS, | |
446988df JH |
1195 | FP_TOP_SSE_REGS, |
1196 | FP_SECOND_SSE_REGS, | |
1197 | FLOAT_SSE_REGS, | |
1198 | FLOAT_INT_REGS, | |
1199 | INT_SSE_REGS, | |
1200 | FLOAT_INT_SSE_REGS, | |
c98f8742 JVA |
1201 | ALL_REGS, LIM_REG_CLASSES |
1202 | }; | |
1203 | ||
d9a5f180 GS |
1204 | #define N_REG_CLASSES ((int) LIM_REG_CLASSES) |
1205 | ||
1206 | #define INTEGER_CLASS_P(CLASS) \ | |
1207 | reg_class_subset_p ((CLASS), GENERAL_REGS) | |
1208 | #define FLOAT_CLASS_P(CLASS) \ | |
1209 | reg_class_subset_p ((CLASS), FLOAT_REGS) | |
1210 | #define SSE_CLASS_P(CLASS) \ | |
06f4e35d | 1211 | reg_class_subset_p ((CLASS), SSE_REGS) |
d9a5f180 | 1212 | #define MMX_CLASS_P(CLASS) \ |
f75959a6 | 1213 | ((CLASS) == MMX_REGS) |
d9a5f180 GS |
1214 | #define MAYBE_INTEGER_CLASS_P(CLASS) \ |
1215 | reg_classes_intersect_p ((CLASS), GENERAL_REGS) | |
1216 | #define MAYBE_FLOAT_CLASS_P(CLASS) \ | |
1217 | reg_classes_intersect_p ((CLASS), FLOAT_REGS) | |
1218 | #define MAYBE_SSE_CLASS_P(CLASS) \ | |
1219 | reg_classes_intersect_p (SSE_REGS, (CLASS)) | |
1220 | #define MAYBE_MMX_CLASS_P(CLASS) \ | |
1221 | reg_classes_intersect_p (MMX_REGS, (CLASS)) | |
1222 | ||
1223 | #define Q_CLASS_P(CLASS) \ | |
1224 | reg_class_subset_p ((CLASS), Q_REGS) | |
7c6b971d | 1225 | |
43f3a59d | 1226 | /* Give names of register classes as strings for dump file. */ |
c98f8742 JVA |
1227 | |
1228 | #define REG_CLASS_NAMES \ | |
1229 | { "NO_REGS", \ | |
ab408a86 | 1230 | "AREG", "DREG", "CREG", "BREG", \ |
c98f8742 | 1231 | "SIREG", "DIREG", \ |
e075ae69 | 1232 | "AD_REGS", \ |
ac2e563f | 1233 | "CLOBBERED_REGS", \ |
e075ae69 | 1234 | "Q_REGS", "NON_Q_REGS", \ |
c98f8742 | 1235 | "INDEX_REGS", \ |
3f3f2124 | 1236 | "LEGACY_REGS", \ |
c98f8742 JVA |
1237 | "GENERAL_REGS", \ |
1238 | "FP_TOP_REG", "FP_SECOND_REG", \ | |
1239 | "FLOAT_REGS", \ | |
cb482895 | 1240 | "SSE_FIRST_REG", \ |
a7180f70 BS |
1241 | "SSE_REGS", \ |
1242 | "MMX_REGS", \ | |
446988df JH |
1243 | "FP_TOP_SSE_REGS", \ |
1244 | "FP_SECOND_SSE_REGS", \ | |
1245 | "FLOAT_SSE_REGS", \ | |
8fcaaa80 | 1246 | "FLOAT_INT_REGS", \ |
446988df JH |
1247 | "INT_SSE_REGS", \ |
1248 | "FLOAT_INT_SSE_REGS", \ | |
c98f8742 JVA |
1249 | "ALL_REGS" } |
1250 | ||
ac2e563f RH |
1251 | /* Define which registers fit in which classes. This is an initializer |
1252 | for a vector of HARD_REG_SET of length N_REG_CLASSES. | |
1253 | ||
1254 | Note that the default setting of CLOBBERED_REGS is for 32-bit; this | |
5efd84c5 NF |
1255 | is adjusted by TARGET_CONDITIONAL_REGISTER_USAGE for the 64-bit ABI |
1256 | in effect. */ | |
c98f8742 | 1257 | |
a7180f70 | 1258 | #define REG_CLASS_CONTENTS \ |
3f3f2124 JH |
1259 | { { 0x00, 0x0 }, \ |
1260 | { 0x01, 0x0 }, { 0x02, 0x0 }, /* AREG, DREG */ \ | |
1261 | { 0x04, 0x0 }, { 0x08, 0x0 }, /* CREG, BREG */ \ | |
1262 | { 0x10, 0x0 }, { 0x20, 0x0 }, /* SIREG, DIREG */ \ | |
1263 | { 0x03, 0x0 }, /* AD_REGS */ \ | |
ac2e563f | 1264 | { 0x07, 0x0 }, /* CLOBBERED_REGS */ \ |
3f3f2124 | 1265 | { 0x0f, 0x0 }, /* Q_REGS */ \ |
b0d95de8 UB |
1266 | { 0x1100f0, 0x1fe0 }, /* NON_Q_REGS */ \ |
1267 | { 0x7f, 0x1fe0 }, /* INDEX_REGS */ \ | |
1268 | { 0x1100ff, 0x0 }, /* LEGACY_REGS */ \ | |
1269 | { 0x1100ff, 0x1fe0 }, /* GENERAL_REGS */ \ | |
3f3f2124 JH |
1270 | { 0x100, 0x0 }, { 0x0200, 0x0 },/* FP_TOP_REG, FP_SECOND_REG */\ |
1271 | { 0xff00, 0x0 }, /* FLOAT_REGS */ \ | |
cb482895 | 1272 | { 0x200000, 0x0 }, /* SSE_FIRST_REG */ \ |
b0d95de8 UB |
1273 | { 0x1fe00000,0x1fe000 }, /* SSE_REGS */ \ |
1274 | { 0xe0000000, 0x1f }, /* MMX_REGS */ \ | |
1275 | { 0x1fe00100,0x1fe000 }, /* FP_TOP_SSE_REG */ \ | |
1276 | { 0x1fe00200,0x1fe000 }, /* FP_SECOND_SSE_REG */ \ | |
0b99eef6 | 1277 | { 0x1fe0ff00,0x1fe000 }, /* FLOAT_SSE_REGS */ \ |
b0d95de8 UB |
1278 | { 0x1ffff, 0x1fe0 }, /* FLOAT_INT_REGS */ \ |
1279 | { 0x1fe100ff,0x1fffe0 }, /* INT_SSE_REGS */ \ | |
1280 | { 0x1fe1ffff,0x1fffe0 }, /* FLOAT_INT_SSE_REGS */ \ | |
1281 | { 0xffffffff,0x1fffff } \ | |
e075ae69 | 1282 | } |
c98f8742 JVA |
1283 | |
1284 | /* The same information, inverted: | |
1285 | Return the class number of the smallest class containing | |
1286 | reg number REGNO. This could be a conditional expression | |
1287 | or could index an array. */ | |
1288 | ||
c98f8742 JVA |
1289 | #define REGNO_REG_CLASS(REGNO) (regclass_map[REGNO]) |
1290 | ||
42db504c SB |
1291 | /* When this hook returns true for MODE, the compiler allows |
1292 | registers explicitly used in the rtl to be used as spill registers | |
1293 | but prevents the compiler from extending the lifetime of these | |
1294 | registers. */ | |
1295 | #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true | |
c98f8742 | 1296 | |
6c6094f1 | 1297 | #define QI_REG_P(X) (REG_P (X) && REGNO (X) <= BX_REG) |
3f3f2124 | 1298 | |
d9a5f180 | 1299 | #define GENERAL_REGNO_P(N) \ |
fb84c7a0 | 1300 | ((N) <= STACK_POINTER_REGNUM || REX_INT_REGNO_P (N)) |
3f3f2124 JH |
1301 | |
1302 | #define GENERAL_REG_P(X) \ | |
6189a572 | 1303 | (REG_P (X) && GENERAL_REGNO_P (REGNO (X))) |
3f3f2124 JH |
1304 | |
1305 | #define ANY_QI_REG_P(X) (TARGET_64BIT ? GENERAL_REG_P(X) : QI_REG_P (X)) | |
1306 | ||
fb84c7a0 UB |
1307 | #define REX_INT_REGNO_P(N) \ |
1308 | IN_RANGE ((N), FIRST_REX_INT_REG, LAST_REX_INT_REG) | |
3f3f2124 JH |
1309 | #define REX_INT_REG_P(X) (REG_P (X) && REX_INT_REGNO_P (REGNO (X))) |
1310 | ||
c98f8742 | 1311 | #define FP_REG_P(X) (REG_P (X) && FP_REGNO_P (REGNO (X))) |
fb84c7a0 | 1312 | #define FP_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG) |
446988df | 1313 | #define ANY_FP_REG_P(X) (REG_P (X) && ANY_FP_REGNO_P (REGNO (X))) |
d9a5f180 | 1314 | #define ANY_FP_REGNO_P(N) (FP_REGNO_P (N) || SSE_REGNO_P (N)) |
a7180f70 | 1315 | |
54a88090 | 1316 | #define X87_FLOAT_MODE_P(MODE) \ |
27ac40e2 | 1317 | (TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) |
54a88090 | 1318 | |
fb84c7a0 UB |
1319 | #define SSE_REG_P(N) (REG_P (N) && SSE_REGNO_P (REGNO (N))) |
1320 | #define SSE_REGNO_P(N) \ | |
1321 | (IN_RANGE ((N), FIRST_SSE_REG, LAST_SSE_REG) \ | |
1322 | || REX_SSE_REGNO_P (N)) | |
3f3f2124 | 1323 | |
4977bab6 | 1324 | #define REX_SSE_REGNO_P(N) \ |
fb84c7a0 | 1325 | IN_RANGE ((N), FIRST_REX_SSE_REG, LAST_REX_SSE_REG) |
4977bab6 | 1326 | |
d9a5f180 GS |
1327 | #define SSE_REGNO(N) \ |
1328 | ((N) < 8 ? FIRST_SSE_REG + (N) : FIRST_REX_SSE_REG + (N) - 8) | |
446988df | 1329 | |
d9a5f180 | 1330 | #define SSE_FLOAT_MODE_P(MODE) \ |
91da27c5 | 1331 | ((TARGET_SSE && (MODE) == SFmode) || (TARGET_SSE2 && (MODE) == DFmode)) |
a7180f70 | 1332 | |
cbf2e4d4 HJ |
1333 | #define FMA4_VEC_FLOAT_MODE_P(MODE) \ |
1334 | (TARGET_FMA4 && ((MODE) == V4SFmode || (MODE) == V2DFmode \ | |
1335 | || (MODE) == V8SFmode || (MODE) == V4DFmode)) | |
1336 | ||
d9a5f180 | 1337 | #define MMX_REG_P(XOP) (REG_P (XOP) && MMX_REGNO_P (REGNO (XOP))) |
fb84c7a0 | 1338 | #define MMX_REGNO_P(N) IN_RANGE ((N), FIRST_MMX_REG, LAST_MMX_REG) |
fce5a9f2 | 1339 | |
fb84c7a0 | 1340 | #define STACK_REG_P(XOP) (REG_P (XOP) && STACK_REGNO_P (REGNO (XOP))) |
fb84c7a0 | 1341 | #define STACK_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG) |
c98f8742 | 1342 | |
d9a5f180 | 1343 | #define STACK_TOP_P(XOP) (REG_P (XOP) && REGNO (XOP) == FIRST_STACK_REG) |
c98f8742 | 1344 | |
e075ae69 RH |
1345 | #define CC_REG_P(X) (REG_P (X) && CC_REGNO_P (REGNO (X))) |
1346 | #define CC_REGNO_P(X) ((X) == FLAGS_REG || (X) == FPSR_REG) | |
1347 | ||
c98f8742 JVA |
1348 | /* The class value for index registers, and the one for base regs. */ |
1349 | ||
1350 | #define INDEX_REG_CLASS INDEX_REGS | |
1351 | #define BASE_REG_CLASS GENERAL_REGS | |
1352 | ||
c98f8742 | 1353 | /* Place additional restrictions on the register class to use when it |
4cbb525c | 1354 | is necessary to be able to hold a value of mode MODE in a reload |
892a2d68 | 1355 | register for which class CLASS would ordinarily be used. */ |
c98f8742 | 1356 | |
d2836273 JH |
1357 | #define LIMIT_RELOAD_CLASS(MODE, CLASS) \ |
1358 | ((MODE) == QImode && !TARGET_64BIT \ | |
3b8d200e JJ |
1359 | && ((CLASS) == ALL_REGS || (CLASS) == GENERAL_REGS \ |
1360 | || (CLASS) == LEGACY_REGS || (CLASS) == INDEX_REGS) \ | |
c98f8742 JVA |
1361 | ? Q_REGS : (CLASS)) |
1362 | ||
85ff473e | 1363 | /* If we are copying between general and FP registers, we need a memory |
f84aa48a | 1364 | location. The same is true for SSE and MMX registers. */ |
d9a5f180 GS |
1365 | #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ |
1366 | ix86_secondary_memory_needed ((CLASS1), (CLASS2), (MODE), 1) | |
e075ae69 | 1367 | |
c62b3659 UB |
1368 | /* Get_secondary_mem widens integral modes to BITS_PER_WORD. |
1369 | There is no need to emit full 64 bit move on 64 bit targets | |
1370 | for integral modes that can be moved using 32 bit move. */ | |
1371 | #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \ | |
1372 | (GET_MODE_BITSIZE (MODE) < 32 && INTEGRAL_MODE_P (MODE) \ | |
1373 | ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \ | |
1374 | : MODE) | |
1375 | ||
1272914c RH |
1376 | /* Return a class of registers that cannot change FROM mode to TO mode. */ |
1377 | ||
1378 | #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ | |
1379 | ix86_cannot_change_mode_class (FROM, TO, CLASS) | |
c98f8742 JVA |
1380 | \f |
1381 | /* Stack layout; function entry, exit and calling. */ | |
1382 | ||
1383 | /* Define this if pushing a word on the stack | |
1384 | makes the stack pointer a smaller address. */ | |
1385 | #define STACK_GROWS_DOWNWARD | |
1386 | ||
a4d05547 | 1387 | /* Define this to nonzero if the nominal address of the stack frame |
c98f8742 JVA |
1388 | is at the high-address end of the local variables; |
1389 | that is, each additional local variable allocated | |
1390 | goes at a more negative offset in the frame. */ | |
f62c8a5c | 1391 | #define FRAME_GROWS_DOWNWARD 1 |
c98f8742 JVA |
1392 | |
1393 | /* Offset within stack frame to start allocating local variables at. | |
1394 | If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
1395 | first local allocated. Otherwise, it is the offset to the BEGINNING | |
1396 | of the first local allocated. */ | |
1397 | #define STARTING_FRAME_OFFSET 0 | |
1398 | ||
8c2b2fae UB |
1399 | /* If we generate an insn to push BYTES bytes, this says how many the stack |
1400 | pointer really advances by. On 386, we have pushw instruction that | |
1401 | decrements by exactly 2 no matter what the position was, there is no pushb. | |
1402 | ||
1403 | But as CIE data alignment factor on this arch is -4 for 32bit targets | |
1404 | and -8 for 64bit targets, we need to make sure all stack pointer adjustments | |
1405 | are in multiple of 4 for 32bit targets and 8 for 64bit targets. */ | |
c98f8742 | 1406 | |
d2836273 | 1407 | #define PUSH_ROUNDING(BYTES) \ |
8c2b2fae UB |
1408 | (((BYTES) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD) |
1409 | ||
1410 | /* If defined, the maximum amount of space required for outgoing arguments | |
1411 | will be computed and placed into the variable `crtl->outgoing_args_size'. | |
1412 | No space will be pushed onto the stack for each call; instead, the | |
1413 | function prologue should increase the stack frame size by this amount. | |
9aa5c1b2 | 1414 | |
6510e8bb KT |
1415 | 64-bit MS ABI seem to require 16 byte alignment everywhere except for |
1416 | function prologue and apilogue. This is not possible without | |
9aa5c1b2 | 1417 | ACCUMULATE_OUTGOING_ARGS. */ |
f73ad30e | 1418 | |
6c6094f1 | 1419 | #define ACCUMULATE_OUTGOING_ARGS \ |
6510e8bb | 1420 | (TARGET_ACCUMULATE_OUTGOING_ARGS || TARGET_64BIT_MS_ABI) |
f73ad30e JH |
1421 | |
1422 | /* If defined, a C expression whose value is nonzero when we want to use PUSH | |
1423 | instructions to pass outgoing arguments. */ | |
1424 | ||
1425 | #define PUSH_ARGS (TARGET_PUSH_ARGS && !ACCUMULATE_OUTGOING_ARGS) | |
1426 | ||
2da4124d L |
1427 | /* We want the stack and args grow in opposite directions, even if |
1428 | PUSH_ARGS is 0. */ | |
1429 | #define PUSH_ARGS_REVERSED 1 | |
1430 | ||
c98f8742 JVA |
1431 | /* Offset of first parameter from the argument pointer register value. */ |
1432 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
1433 | ||
a7180f70 BS |
1434 | /* Define this macro if functions should assume that stack space has been |
1435 | allocated for arguments even when their values are passed in registers. | |
1436 | ||
1437 | The value of this macro is the size, in bytes, of the area reserved for | |
1438 | arguments passed in registers for the function represented by FNDECL. | |
1439 | ||
1440 | This space can be allocated by the caller, or be a part of the | |
1441 | machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE' says | |
1442 | which. */ | |
7c800926 KT |
1443 | #define REG_PARM_STACK_SPACE(FNDECL) ix86_reg_parm_stack_space (FNDECL) |
1444 | ||
4ae8027b | 1445 | #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) \ |
6510e8bb | 1446 | (TARGET_64BIT && ix86_function_type_abi (FNTYPE) == MS_ABI) |
7c800926 | 1447 | |
c98f8742 JVA |
1448 | /* Define how to find the value returned by a library function |
1449 | assuming the value has mode MODE. */ | |
1450 | ||
4ae8027b | 1451 | #define LIBCALL_VALUE(MODE) ix86_libcall_value (MODE) |
c98f8742 | 1452 | |
e9125c09 TW |
1453 | /* Define the size of the result block used for communication between |
1454 | untyped_call and untyped_return. The block contains a DImode value | |
1455 | followed by the block used by fnsave and frstor. */ | |
1456 | ||
1457 | #define APPLY_RESULT_SIZE (8+108) | |
1458 | ||
b08de47e | 1459 | /* 1 if N is a possible register number for function argument passing. */ |
53c17031 | 1460 | #define FUNCTION_ARG_REGNO_P(N) ix86_function_arg_regno_p (N) |
c98f8742 JVA |
1461 | |
1462 | /* Define a data type for recording info about an argument list | |
1463 | during the scan of that argument list. This data type should | |
1464 | hold all necessary information about the function itself | |
1465 | and about the args processed so far, enough to enable macros | |
b08de47e | 1466 | such as FUNCTION_ARG to determine where the next arg should go. */ |
c98f8742 | 1467 | |
e075ae69 | 1468 | typedef struct ix86_args { |
fa283935 | 1469 | int words; /* # words passed so far */ |
b08de47e MM |
1470 | int nregs; /* # registers available for passing */ |
1471 | int regno; /* next available register number */ | |
3e65f251 KT |
1472 | int fastcall; /* fastcall or thiscall calling convention |
1473 | is used */ | |
fa283935 | 1474 | int sse_words; /* # sse words passed so far */ |
a7180f70 | 1475 | int sse_nregs; /* # sse registers available for passing */ |
95879c72 | 1476 | int warn_avx; /* True when we want to warn about AVX ABI. */ |
47a37ce4 | 1477 | int warn_sse; /* True when we want to warn about SSE ABI. */ |
fa283935 UB |
1478 | int warn_mmx; /* True when we want to warn about MMX ABI. */ |
1479 | int sse_regno; /* next available sse register number */ | |
1480 | int mmx_words; /* # mmx words passed so far */ | |
bcf17554 JH |
1481 | int mmx_nregs; /* # mmx registers available for passing */ |
1482 | int mmx_regno; /* next available mmx register number */ | |
892a2d68 | 1483 | int maybe_vaarg; /* true for calls to possibly vardic fncts. */ |
2767a7f2 | 1484 | int caller; /* true if it is caller. */ |
2824d6e5 UB |
1485 | int float_in_sse; /* Set to 1 or 2 for 32bit targets if |
1486 | SFmode/DFmode arguments should be passed | |
1487 | in SSE registers. Otherwise 0. */ | |
51212b32 | 1488 | enum calling_abi call_abi; /* Set to SYSV_ABI for sysv abi. Otherwise |
7c800926 | 1489 | MS_ABI for ms abi. */ |
b08de47e | 1490 | } CUMULATIVE_ARGS; |
c98f8742 JVA |
1491 | |
1492 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
1493 | for a call to a function whose data type is FNTYPE. | |
b08de47e | 1494 | For a library call, FNTYPE is 0. */ |
c98f8742 | 1495 | |
0f6937fe | 1496 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ |
2767a7f2 L |
1497 | init_cumulative_args (&(CUM), (FNTYPE), (LIBNAME), (FNDECL), \ |
1498 | (N_NAMED_ARGS) != -1) | |
c98f8742 | 1499 | |
c98f8742 JVA |
1500 | /* Output assembler code to FILE to increment profiler label # LABELNO |
1501 | for profiling a function entry. */ | |
1502 | ||
a5fa1ecd JH |
1503 | #define FUNCTION_PROFILER(FILE, LABELNO) x86_function_profiler (FILE, LABELNO) |
1504 | ||
1505 | #define MCOUNT_NAME "_mcount" | |
1506 | ||
3c5273a9 KT |
1507 | #define MCOUNT_NAME_BEFORE_PROLOGUE "__fentry__" |
1508 | ||
a5fa1ecd | 1509 | #define PROFILE_COUNT_REGISTER "edx" |
c98f8742 JVA |
1510 | |
1511 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, | |
1512 | the stack pointer does not matter. The value is tested only in | |
1513 | functions that have frame pointers. | |
1514 | No definition is equivalent to always zero. */ | |
fce5a9f2 | 1515 | /* Note on the 386 it might be more efficient not to define this since |
c98f8742 JVA |
1516 | we have to restore it ourselves from the frame pointer, in order to |
1517 | use pop */ | |
1518 | ||
1519 | #define EXIT_IGNORE_STACK 1 | |
1520 | ||
c98f8742 JVA |
1521 | /* Output assembler code for a block containing the constant parts |
1522 | of a trampoline, leaving space for the variable parts. */ | |
1523 | ||
a269a03c | 1524 | /* On the 386, the trampoline contains two instructions: |
c98f8742 | 1525 | mov #STATIC,ecx |
a269a03c JC |
1526 | jmp FUNCTION |
1527 | The trampoline is generated entirely at runtime. The operand of JMP | |
1528 | is the address of FUNCTION relative to the instruction following the | |
1529 | JMP (which is 5 bytes long). */ | |
c98f8742 JVA |
1530 | |
1531 | /* Length in units of the trampoline for entering a nested function. */ | |
1532 | ||
3452586b | 1533 | #define TRAMPOLINE_SIZE (TARGET_64BIT ? 24 : 10) |
c98f8742 JVA |
1534 | \f |
1535 | /* Definitions for register eliminations. | |
1536 | ||
1537 | This is an array of structures. Each structure initializes one pair | |
1538 | of eliminable registers. The "from" register number is given first, | |
1539 | followed by "to". Eliminations of the same "from" register are listed | |
1540 | in order of preference. | |
1541 | ||
afc2cd05 NC |
1542 | There are two registers that can always be eliminated on the i386. |
1543 | The frame pointer and the arg pointer can be replaced by either the | |
1544 | hard frame pointer or to the stack pointer, depending upon the | |
1545 | circumstances. The hard frame pointer is not used before reload and | |
1546 | so it is not eligible for elimination. */ | |
c98f8742 | 1547 | |
564d80f4 JH |
1548 | #define ELIMINABLE_REGS \ |
1549 | {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
1550 | { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ | |
1551 | { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
1552 | { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} \ | |
c98f8742 | 1553 | |
c98f8742 JVA |
1554 | /* Define the offset between two registers, one to be eliminated, and the other |
1555 | its replacement, at the start of a routine. */ | |
1556 | ||
d9a5f180 GS |
1557 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
1558 | ((OFFSET) = ix86_initial_elimination_offset ((FROM), (TO))) | |
c98f8742 JVA |
1559 | \f |
1560 | /* Addressing modes, and classification of registers for them. */ | |
1561 | ||
c98f8742 JVA |
1562 | /* Macros to check register numbers against specific register classes. */ |
1563 | ||
1564 | /* These assume that REGNO is a hard or pseudo reg number. | |
1565 | They give nonzero only if REGNO is a hard reg of the suitable class | |
1566 | or a pseudo reg currently allocated to a suitable hard reg. | |
1567 | Since they use reg_renumber, they are safe only once reg_renumber | |
1568 | has been allocated, which happens in local-alloc.c. */ | |
1569 | ||
3f3f2124 JH |
1570 | #define REGNO_OK_FOR_INDEX_P(REGNO) \ |
1571 | ((REGNO) < STACK_POINTER_REGNUM \ | |
fb84c7a0 UB |
1572 | || REX_INT_REGNO_P (REGNO) \ |
1573 | || (unsigned) reg_renumber[(REGNO)] < STACK_POINTER_REGNUM \ | |
1574 | || REX_INT_REGNO_P ((unsigned) reg_renumber[(REGNO)])) | |
c98f8742 | 1575 | |
3f3f2124 | 1576 | #define REGNO_OK_FOR_BASE_P(REGNO) \ |
fb84c7a0 | 1577 | (GENERAL_REGNO_P (REGNO) \ |
3f3f2124 JH |
1578 | || (REGNO) == ARG_POINTER_REGNUM \ |
1579 | || (REGNO) == FRAME_POINTER_REGNUM \ | |
fb84c7a0 | 1580 | || GENERAL_REGNO_P ((unsigned) reg_renumber[(REGNO)])) |
c98f8742 | 1581 | |
c98f8742 JVA |
1582 | /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx |
1583 | and check its validity for a certain class. | |
1584 | We have two alternate definitions for each of them. | |
1585 | The usual definition accepts all pseudo regs; the other rejects | |
1586 | them unless they have been allocated suitable hard regs. | |
1587 | The symbol REG_OK_STRICT causes the latter definition to be used. | |
1588 | ||
1589 | Most source files want to accept pseudo regs in the hope that | |
1590 | they will get allocated to the class that the insn wants them to be in. | |
1591 | Source files for reload pass need to be strict. | |
1592 | After reload, it makes no difference, since pseudo regs have | |
1593 | been eliminated by then. */ | |
1594 | ||
c98f8742 | 1595 | |
ff482c8d | 1596 | /* Non strict versions, pseudos are ok. */ |
3b3c6a3f MM |
1597 | #define REG_OK_FOR_INDEX_NONSTRICT_P(X) \ |
1598 | (REGNO (X) < STACK_POINTER_REGNUM \ | |
fb84c7a0 | 1599 | || REX_INT_REGNO_P (REGNO (X)) \ |
c98f8742 JVA |
1600 | || REGNO (X) >= FIRST_PSEUDO_REGISTER) |
1601 | ||
3b3c6a3f | 1602 | #define REG_OK_FOR_BASE_NONSTRICT_P(X) \ |
fb84c7a0 | 1603 | (GENERAL_REGNO_P (REGNO (X)) \ |
3b3c6a3f | 1604 | || REGNO (X) == ARG_POINTER_REGNUM \ |
3f3f2124 | 1605 | || REGNO (X) == FRAME_POINTER_REGNUM \ |
3b3c6a3f | 1606 | || REGNO (X) >= FIRST_PSEUDO_REGISTER) |
c98f8742 | 1607 | |
3b3c6a3f MM |
1608 | /* Strict versions, hard registers only */ |
1609 | #define REG_OK_FOR_INDEX_STRICT_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) | |
1610 | #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) | |
c98f8742 | 1611 | |
3b3c6a3f | 1612 | #ifndef REG_OK_STRICT |
d9a5f180 GS |
1613 | #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_NONSTRICT_P (X) |
1614 | #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NONSTRICT_P (X) | |
3b3c6a3f MM |
1615 | |
1616 | #else | |
d9a5f180 GS |
1617 | #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_STRICT_P (X) |
1618 | #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X) | |
c98f8742 JVA |
1619 | #endif |
1620 | ||
331d9186 | 1621 | /* TARGET_LEGITIMATE_ADDRESS_P recognizes an RTL expression |
c98f8742 JVA |
1622 | that is a valid memory address for an instruction. |
1623 | The MODE argument is the machine mode for the MEM expression | |
1624 | that wants to use this address. | |
1625 | ||
331d9186 | 1626 | The other macros defined here are used only in TARGET_LEGITIMATE_ADDRESS_P, |
c98f8742 JVA |
1627 | except for CONSTANT_ADDRESS_P which is usually machine-independent. |
1628 | ||
1629 | See legitimize_pic_address in i386.c for details as to what | |
1630 | constitutes a legitimate address when -fpic is used. */ | |
1631 | ||
1632 | #define MAX_REGS_PER_ADDRESS 2 | |
1633 | ||
f996902d | 1634 | #define CONSTANT_ADDRESS_P(X) constant_address_p (X) |
c98f8742 | 1635 | |
ae1547cc UB |
1636 | /* Try a machine-dependent way of reloading an illegitimate address |
1637 | operand. If we find one, push the reload and jump to WIN. This | |
1638 | macro is used in only one place: `find_reloads_address' in reload.c. */ | |
1639 | ||
1640 | #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, INDL, WIN) \ | |
1641 | do { \ | |
1642 | if (ix86_legitimize_reload_address ((X), (MODE), (OPNUM), \ | |
1643 | (int)(TYPE), (INDL))) \ | |
1644 | goto WIN; \ | |
1645 | } while (0) | |
1646 | ||
b949ea8b JW |
1647 | /* If defined, a C expression to determine the base term of address X. |
1648 | This macro is used in only one place: `find_base_term' in alias.c. | |
1649 | ||
1650 | It is always safe for this macro to not be defined. It exists so | |
1651 | that alias analysis can understand machine-dependent addresses. | |
1652 | ||
1653 | The typical use of this macro is to handle addresses containing | |
1654 | a label_ref or symbol_ref within an UNSPEC. */ | |
1655 | ||
d9a5f180 | 1656 | #define FIND_BASE_TERM(X) ix86_find_base_term (X) |
b949ea8b | 1657 | |
c98f8742 | 1658 | /* Nonzero if the constant value X is a legitimate general operand |
fce5a9f2 | 1659 | when generating PIC code. It is given that flag_pic is on and |
c98f8742 JVA |
1660 | that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ |
1661 | ||
f996902d | 1662 | #define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X) |
c98f8742 JVA |
1663 | |
1664 | #define SYMBOLIC_CONST(X) \ | |
d9a5f180 GS |
1665 | (GET_CODE (X) == SYMBOL_REF \ |
1666 | || GET_CODE (X) == LABEL_REF \ | |
1667 | || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X))) | |
c98f8742 | 1668 | \f |
b08de47e MM |
1669 | /* Max number of args passed in registers. If this is more than 3, we will |
1670 | have problems with ebx (register #4), since it is a caller save register and | |
1671 | is also used as the pic register in ELF. So for now, don't allow more than | |
1672 | 3 registers to be passed in registers. */ | |
1673 | ||
7c800926 KT |
1674 | /* Abi specific values for REGPARM_MAX and SSE_REGPARM_MAX */ |
1675 | #define X86_64_REGPARM_MAX 6 | |
72fa3605 | 1676 | #define X86_64_MS_REGPARM_MAX 4 |
7c800926 | 1677 | |
72fa3605 | 1678 | #define X86_32_REGPARM_MAX 3 |
7c800926 | 1679 | |
4ae8027b | 1680 | #define REGPARM_MAX \ |
2824d6e5 UB |
1681 | (TARGET_64BIT \ |
1682 | ? (TARGET_64BIT_MS_ABI \ | |
1683 | ? X86_64_MS_REGPARM_MAX \ | |
1684 | : X86_64_REGPARM_MAX) \ | |
4ae8027b | 1685 | : X86_32_REGPARM_MAX) |
d2836273 | 1686 | |
72fa3605 UB |
1687 | #define X86_64_SSE_REGPARM_MAX 8 |
1688 | #define X86_64_MS_SSE_REGPARM_MAX 4 | |
1689 | ||
b6010cab | 1690 | #define X86_32_SSE_REGPARM_MAX (TARGET_SSE ? (TARGET_MACHO ? 4 : 3) : 0) |
72fa3605 | 1691 | |
4ae8027b | 1692 | #define SSE_REGPARM_MAX \ |
2824d6e5 UB |
1693 | (TARGET_64BIT \ |
1694 | ? (TARGET_64BIT_MS_ABI \ | |
1695 | ? X86_64_MS_SSE_REGPARM_MAX \ | |
1696 | : X86_64_SSE_REGPARM_MAX) \ | |
4ae8027b | 1697 | : X86_32_SSE_REGPARM_MAX) |
bcf17554 JH |
1698 | |
1699 | #define MMX_REGPARM_MAX (TARGET_64BIT ? 0 : (TARGET_MMX ? 3 : 0)) | |
c98f8742 JVA |
1700 | \f |
1701 | /* Specify the machine mode that this machine uses | |
1702 | for the index in the tablejump instruction. */ | |
dc4d7240 | 1703 | #define CASE_VECTOR_MODE \ |
6025b127 | 1704 | (!TARGET_LP64 || (flag_pic && ix86_cmodel != CM_LARGE_PIC) ? SImode : DImode) |
c98f8742 | 1705 | |
c98f8742 JVA |
1706 | /* Define this as 1 if `char' should by default be signed; else as 0. */ |
1707 | #define DEFAULT_SIGNED_CHAR 1 | |
1708 | ||
1709 | /* Max number of bytes we can move from memory to memory | |
1710 | in one reasonably fast instruction. */ | |
65d9c0ab JH |
1711 | #define MOVE_MAX 16 |
1712 | ||
1713 | /* MOVE_MAX_PIECES is the number of bytes at a time which we can | |
1714 | move efficiently, as opposed to MOVE_MAX which is the maximum | |
892a2d68 | 1715 | number of bytes we can move with a single instruction. */ |
63001560 | 1716 | #define MOVE_MAX_PIECES UNITS_PER_WORD |
c98f8742 | 1717 | |
7e24ffc9 | 1718 | /* If a memory-to-memory move would take MOVE_RATIO or more simple |
70128ad9 | 1719 | move-instruction pairs, we will do a movmem or libcall instead. |
7e24ffc9 HPN |
1720 | Increasing the value will always make code faster, but eventually |
1721 | incurs high cost in increased code size. | |
c98f8742 | 1722 | |
e2e52e1b | 1723 | If you don't define this, a reasonable default is used. */ |
c98f8742 | 1724 | |
e04ad03d | 1725 | #define MOVE_RATIO(speed) ((speed) ? ix86_cost->move_ratio : 3) |
c98f8742 | 1726 | |
45d78e7f JJ |
1727 | /* If a clear memory operation would take CLEAR_RATIO or more simple |
1728 | move-instruction sequences, we will do a clrmem or libcall instead. */ | |
1729 | ||
e04ad03d | 1730 | #define CLEAR_RATIO(speed) ((speed) ? MIN (6, ix86_cost->move_ratio) : 2) |
45d78e7f | 1731 | |
53f00dde UB |
1732 | /* Define if shifts truncate the shift count which implies one can |
1733 | omit a sign-extension or zero-extension of a shift count. | |
1734 | ||
1735 | On i386, shifts do truncate the count. But bit test instructions | |
1736 | take the modulo of the bit offset operand. */ | |
c98f8742 JVA |
1737 | |
1738 | /* #define SHIFT_COUNT_TRUNCATED */ | |
1739 | ||
1740 | /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
1741 | is done just by pretending it is already truncated. */ | |
1742 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 | |
1743 | ||
d9f32422 JH |
1744 | /* A macro to update M and UNSIGNEDP when an object whose type is |
1745 | TYPE and which has the specified mode and signedness is to be | |
1746 | stored in a register. This macro is only called when TYPE is a | |
1747 | scalar type. | |
1748 | ||
f710504c | 1749 | On i386 it is sometimes useful to promote HImode and QImode |
d9f32422 JH |
1750 | quantities to SImode. The choice depends on target type. */ |
1751 | ||
1752 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ | |
d9a5f180 | 1753 | do { \ |
d9f32422 JH |
1754 | if (((MODE) == HImode && TARGET_PROMOTE_HI_REGS) \ |
1755 | || ((MODE) == QImode && TARGET_PROMOTE_QI_REGS)) \ | |
d9a5f180 GS |
1756 | (MODE) = SImode; \ |
1757 | } while (0) | |
d9f32422 | 1758 | |
c98f8742 JVA |
1759 | /* Specify the machine mode that pointers have. |
1760 | After generation of rtl, the compiler makes no further distinction | |
1761 | between pointers and any other objects of this machine mode. */ | |
28968d91 | 1762 | #define Pmode (ix86_pmode == PMODE_DI ? DImode : SImode) |
c98f8742 | 1763 | |
f0ea7581 L |
1764 | /* A C expression whose value is zero if pointers that need to be extended |
1765 | from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and | |
1766 | greater then zero if they are zero-extended and less then zero if the | |
1767 | ptr_extend instruction should be used. */ | |
1768 | ||
1769 | #define POINTERS_EXTEND_UNSIGNED 1 | |
1770 | ||
c98f8742 JVA |
1771 | /* A function address in a call instruction |
1772 | is a byte address (for indexing purposes) | |
1773 | so give the MEM rtx a byte's mode. */ | |
1774 | #define FUNCTION_MODE QImode | |
d4ba09c0 | 1775 | \f |
d4ba09c0 | 1776 | |
d4ba09c0 SC |
1777 | /* A C expression for the cost of a branch instruction. A value of 1 |
1778 | is the default; other values are interpreted relative to that. */ | |
1779 | ||
3a4fd356 JH |
1780 | #define BRANCH_COST(speed_p, predictable_p) \ |
1781 | (!(speed_p) ? 2 : (predictable_p) ? 0 : ix86_branch_cost) | |
d4ba09c0 SC |
1782 | |
1783 | /* Define this macro as a C expression which is nonzero if accessing | |
1784 | less than a word of memory (i.e. a `char' or a `short') is no | |
1785 | faster than accessing a word of memory, i.e., if such access | |
1786 | require more than one instruction or if there is no difference in | |
1787 | cost between byte and (aligned) word loads. | |
1788 | ||
1789 | When this macro is not defined, the compiler will access a field by | |
1790 | finding the smallest containing object; when it is defined, a | |
1791 | fullword load will be used if alignment permits. Unless bytes | |
1792 | accesses are faster than word accesses, using word accesses is | |
1793 | preferable since it may eliminate subsequent memory access if | |
1794 | subsequent accesses occur to other fields in the same word of the | |
1795 | structure, but to different bytes. */ | |
1796 | ||
1797 | #define SLOW_BYTE_ACCESS 0 | |
1798 | ||
1799 | /* Nonzero if access to memory by shorts is slow and undesirable. */ | |
1800 | #define SLOW_SHORT_ACCESS 0 | |
1801 | ||
d4ba09c0 SC |
1802 | /* Define this macro to be the value 1 if unaligned accesses have a |
1803 | cost many times greater than aligned accesses, for example if they | |
1804 | are emulated in a trap handler. | |
1805 | ||
9cd10576 KH |
1806 | When this macro is nonzero, the compiler will act as if |
1807 | `STRICT_ALIGNMENT' were nonzero when generating code for block | |
d4ba09c0 | 1808 | moves. This can cause significantly more instructions to be |
9cd10576 | 1809 | produced. Therefore, do not set this macro nonzero if unaligned |
d4ba09c0 SC |
1810 | accesses only add a cycle or two to the time for a memory access. |
1811 | ||
1812 | If the value of this macro is always zero, it need not be defined. */ | |
1813 | ||
e1565e65 | 1814 | /* #define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) 0 */ |
d4ba09c0 | 1815 | |
d4ba09c0 SC |
1816 | /* Define this macro if it is as good or better to call a constant |
1817 | function address than to call an address kept in a register. | |
1818 | ||
1819 | Desirable on the 386 because a CALL with a constant address is | |
1820 | faster than one with a register address. */ | |
1821 | ||
1822 | #define NO_FUNCTION_CSE | |
c98f8742 | 1823 | \f |
c572e5ba JVA |
1824 | /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, |
1825 | return the mode to be used for the comparison. | |
1826 | ||
1827 | For floating-point equality comparisons, CCFPEQmode should be used. | |
e075ae69 | 1828 | VOIDmode should be used in all other cases. |
c572e5ba | 1829 | |
16189740 | 1830 | For integer comparisons against zero, reduce to CCNOmode or CCZmode if |
e075ae69 | 1831 | possible, to allow for more combinations. */ |
c98f8742 | 1832 | |
d9a5f180 | 1833 | #define SELECT_CC_MODE(OP, X, Y) ix86_cc_mode ((OP), (X), (Y)) |
9e7adcb3 | 1834 | |
9cd10576 | 1835 | /* Return nonzero if MODE implies a floating point inequality can be |
9e7adcb3 JH |
1836 | reversed. */ |
1837 | ||
1838 | #define REVERSIBLE_CC_MODE(MODE) 1 | |
1839 | ||
1840 | /* A C expression whose value is reversed condition code of the CODE for | |
1841 | comparison done in CC_MODE mode. */ | |
3c5cb3e4 | 1842 | #define REVERSE_CONDITION(CODE, MODE) ix86_reverse_condition ((CODE), (MODE)) |
9e7adcb3 | 1843 | |
c98f8742 JVA |
1844 | \f |
1845 | /* Control the assembler format that we output, to the extent | |
1846 | this does not vary between assemblers. */ | |
1847 | ||
1848 | /* How to refer to registers in assembler output. | |
892a2d68 | 1849 | This sequence is indexed by compiler's hard-register-number (see above). */ |
c98f8742 | 1850 | |
a7b376ee | 1851 | /* In order to refer to the first 8 regs as 32-bit regs, prefix an "e". |
c98f8742 JVA |
1852 | For non floating point regs, the following are the HImode names. |
1853 | ||
1854 | For float regs, the stack top is sometimes referred to as "%st(0)" | |
6e2188e0 NF |
1855 | instead of just "%st". TARGET_PRINT_OPERAND handles this with the |
1856 | "y" code. */ | |
c98f8742 | 1857 | |
a7180f70 BS |
1858 | #define HI_REGISTER_NAMES \ |
1859 | {"ax","dx","cx","bx","si","di","bp","sp", \ | |
480feac0 | 1860 | "st","st(1)","st(2)","st(3)","st(4)","st(5)","st(6)","st(7)", \ |
b0d95de8 | 1861 | "argp", "flags", "fpsr", "fpcr", "frame", \ |
a7180f70 | 1862 | "xmm0","xmm1","xmm2","xmm3","xmm4","xmm5","xmm6","xmm7", \ |
03c259ad | 1863 | "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", \ |
3f3f2124 JH |
1864 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ |
1865 | "xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15"} | |
a7180f70 | 1866 | |
c98f8742 JVA |
1867 | #define REGISTER_NAMES HI_REGISTER_NAMES |
1868 | ||
1869 | /* Table of additional register names to use in user input. */ | |
1870 | ||
1871 | #define ADDITIONAL_REGISTER_NAMES \ | |
54d26233 MH |
1872 | { { "eax", 0 }, { "edx", 1 }, { "ecx", 2 }, { "ebx", 3 }, \ |
1873 | { "esi", 4 }, { "edi", 5 }, { "ebp", 6 }, { "esp", 7 }, \ | |
3f3f2124 JH |
1874 | { "rax", 0 }, { "rdx", 1 }, { "rcx", 2 }, { "rbx", 3 }, \ |
1875 | { "rsi", 4 }, { "rdi", 5 }, { "rbp", 6 }, { "rsp", 7 }, \ | |
54d26233 | 1876 | { "al", 0 }, { "dl", 1 }, { "cl", 2 }, { "bl", 3 }, \ |
21bf822e | 1877 | { "ah", 0 }, { "dh", 1 }, { "ch", 2 }, { "bh", 3 } } |
c98f8742 JVA |
1878 | |
1879 | /* Note we are omitting these since currently I don't know how | |
1880 | to get gcc to use these, since they want the same but different | |
1881 | number as al, and ax. | |
1882 | */ | |
1883 | ||
c98f8742 | 1884 | #define QI_REGISTER_NAMES \ |
3f3f2124 | 1885 | {"al", "dl", "cl", "bl", "sil", "dil", "bpl", "spl",} |
c98f8742 JVA |
1886 | |
1887 | /* These parallel the array above, and can be used to access bits 8:15 | |
892a2d68 | 1888 | of regs 0 through 3. */ |
c98f8742 JVA |
1889 | |
1890 | #define QI_HIGH_REGISTER_NAMES \ | |
1891 | {"ah", "dh", "ch", "bh", } | |
1892 | ||
1893 | /* How to renumber registers for dbx and gdb. */ | |
1894 | ||
d9a5f180 GS |
1895 | #define DBX_REGISTER_NUMBER(N) \ |
1896 | (TARGET_64BIT ? dbx64_register_map[(N)] : dbx_register_map[(N)]) | |
83774849 | 1897 | |
9a82e702 MS |
1898 | extern int const dbx_register_map[FIRST_PSEUDO_REGISTER]; |
1899 | extern int const dbx64_register_map[FIRST_PSEUDO_REGISTER]; | |
1900 | extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER]; | |
c98f8742 | 1901 | |
469ac993 JM |
1902 | /* Before the prologue, RA is at 0(%esp). */ |
1903 | #define INCOMING_RETURN_ADDR_RTX \ | |
f64cecad | 1904 | gen_rtx_MEM (VOIDmode, gen_rtx_REG (VOIDmode, STACK_POINTER_REGNUM)) |
fce5a9f2 | 1905 | |
e414ab29 | 1906 | /* After the prologue, RA is at -4(AP) in the current frame. */ |
1020a5ab RH |
1907 | #define RETURN_ADDR_RTX(COUNT, FRAME) \ |
1908 | ((COUNT) == 0 \ | |
1909 | ? gen_rtx_MEM (Pmode, plus_constant (arg_pointer_rtx, -UNITS_PER_WORD)) \ | |
1910 | : gen_rtx_MEM (Pmode, plus_constant (FRAME, UNITS_PER_WORD))) | |
e414ab29 | 1911 | |
892a2d68 | 1912 | /* PC is dbx register 8; let's use that column for RA. */ |
0f7fa3d0 | 1913 | #define DWARF_FRAME_RETURN_COLUMN (TARGET_64BIT ? 16 : 8) |
469ac993 | 1914 | |
a6ab3aad | 1915 | /* Before the prologue, the top of the frame is at 4(%esp). */ |
0f7fa3d0 | 1916 | #define INCOMING_FRAME_SP_OFFSET UNITS_PER_WORD |
a6ab3aad | 1917 | |
1020a5ab | 1918 | /* Describe how we implement __builtin_eh_return. */ |
2824d6e5 UB |
1919 | #define EH_RETURN_DATA_REGNO(N) ((N) <= DX_REG ? (N) : INVALID_REGNUM) |
1920 | #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, CX_REG) | |
1020a5ab | 1921 | |
ad919812 | 1922 | |
e4c4ebeb RH |
1923 | /* Select a format to encode pointers in exception handling data. CODE |
1924 | is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is | |
1925 | true if the symbol may be affected by dynamic relocations. | |
1926 | ||
1927 | ??? All x86 object file formats are capable of representing this. | |
1928 | After all, the relocation needed is the same as for the call insn. | |
1929 | Whether or not a particular assembler allows us to enter such, I | |
1930 | guess we'll have to see. */ | |
d9a5f180 | 1931 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ |
72ce3d4a | 1932 | asm_preferred_eh_data_format ((CODE), (GLOBAL)) |
e4c4ebeb | 1933 | |
c98f8742 JVA |
1934 | /* This is how to output an insn to push a register on the stack. |
1935 | It need not be very fast code. */ | |
1936 | ||
d9a5f180 | 1937 | #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ |
0d1c5774 JJ |
1938 | do { \ |
1939 | if (TARGET_64BIT) \ | |
1940 | asm_fprintf ((FILE), "\tpush{q}\t%%r%s\n", \ | |
1941 | reg_names[(REGNO)] + (REX_INT_REGNO_P (REGNO) != 0)); \ | |
1942 | else \ | |
1943 | asm_fprintf ((FILE), "\tpush{l}\t%%e%s\n", reg_names[(REGNO)]); \ | |
1944 | } while (0) | |
c98f8742 JVA |
1945 | |
1946 | /* This is how to output an insn to pop a register from the stack. | |
1947 | It need not be very fast code. */ | |
1948 | ||
d9a5f180 | 1949 | #define ASM_OUTPUT_REG_POP(FILE, REGNO) \ |
0d1c5774 JJ |
1950 | do { \ |
1951 | if (TARGET_64BIT) \ | |
1952 | asm_fprintf ((FILE), "\tpop{q}\t%%r%s\n", \ | |
1953 | reg_names[(REGNO)] + (REX_INT_REGNO_P (REGNO) != 0)); \ | |
1954 | else \ | |
1955 | asm_fprintf ((FILE), "\tpop{l}\t%%e%s\n", reg_names[(REGNO)]); \ | |
1956 | } while (0) | |
c98f8742 | 1957 | |
f88c65f7 | 1958 | /* This is how to output an element of a case-vector that is absolute. */ |
c98f8742 JVA |
1959 | |
1960 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
d9a5f180 | 1961 | ix86_output_addr_vec_elt ((FILE), (VALUE)) |
c98f8742 | 1962 | |
f88c65f7 | 1963 | /* This is how to output an element of a case-vector that is relative. */ |
c98f8742 | 1964 | |
33f7f353 | 1965 | #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ |
d9a5f180 | 1966 | ix86_output_addr_diff_elt ((FILE), (VALUE), (REL)) |
f88c65f7 | 1967 | |
63001560 | 1968 | /* When we see %v, we will print the 'v' prefix if TARGET_AVX is true. */ |
95879c72 L |
1969 | |
1970 | #define ASM_OUTPUT_AVX_PREFIX(STREAM, PTR) \ | |
1971 | { \ | |
1972 | if ((PTR)[0] == '%' && (PTR)[1] == 'v') \ | |
63001560 | 1973 | (PTR) += TARGET_AVX ? 1 : 2; \ |
95879c72 L |
1974 | } |
1975 | ||
1976 | /* A C statement or statements which output an assembler instruction | |
1977 | opcode to the stdio stream STREAM. The macro-operand PTR is a | |
1978 | variable of type `char *' which points to the opcode name in | |
1979 | its "internal" form--the form that is written in the machine | |
1980 | description. */ | |
1981 | ||
1982 | #define ASM_OUTPUT_OPCODE(STREAM, PTR) \ | |
1983 | ASM_OUTPUT_AVX_PREFIX ((STREAM), (PTR)) | |
1984 | ||
6a90d232 L |
1985 | /* A C statement to output to the stdio stream FILE an assembler |
1986 | command to pad the location counter to a multiple of 1<<LOG | |
1987 | bytes if it is within MAX_SKIP bytes. */ | |
1988 | ||
1989 | #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN | |
1990 | #undef ASM_OUTPUT_MAX_SKIP_PAD | |
1991 | #define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \ | |
1992 | if ((LOG) != 0) \ | |
1993 | { \ | |
1994 | if ((MAX_SKIP) == 0) \ | |
1995 | fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
1996 | else \ | |
1997 | fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
1998 | } | |
1999 | #endif | |
2000 | ||
135a687e KT |
2001 | /* Write the extra assembler code needed to declare a function |
2002 | properly. */ | |
2003 | ||
2004 | #undef ASM_OUTPUT_FUNCTION_LABEL | |
2005 | #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \ | |
2006 | ix86_asm_output_function_label (FILE, NAME, DECL) | |
2007 | ||
f7288899 EC |
2008 | /* Under some conditions we need jump tables in the text section, |
2009 | because the assembler cannot handle label differences between | |
2010 | sections. This is the case for x86_64 on Mach-O for example. */ | |
f88c65f7 RH |
2011 | |
2012 | #define JUMP_TABLES_IN_TEXT_SECTION \ | |
f7288899 EC |
2013 | (flag_pic && ((TARGET_MACHO && TARGET_64BIT) \ |
2014 | || (!TARGET_64BIT && !HAVE_AS_GOTOFF_IN_DATA))) | |
c98f8742 | 2015 | |
cea3bd3e RH |
2016 | /* Switch to init or fini section via SECTION_OP, emit a call to FUNC, |
2017 | and switch back. For x86 we do this only to save a few bytes that | |
2018 | would otherwise be unused in the text section. */ | |
ad211091 KT |
2019 | #define CRT_MKSTR2(VAL) #VAL |
2020 | #define CRT_MKSTR(x) CRT_MKSTR2(x) | |
2021 | ||
2022 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
2023 | asm (SECTION_OP "\n\t" \ | |
2024 | "call " CRT_MKSTR(__USER_LABEL_PREFIX__) #FUNC "\n" \ | |
cea3bd3e | 2025 | TEXT_SECTION_ASM_OP); |
74b42c8b | 2026 | \f |
b2b01543 | 2027 | /* Which processor to tune code generation for. */ |
5bf0ebab RH |
2028 | |
2029 | enum processor_type | |
2030 | { | |
8383d43c | 2031 | PROCESSOR_I386 = 0, /* 80386 */ |
5bf0ebab RH |
2032 | PROCESSOR_I486, /* 80486DX, 80486SX, 80486DX[24] */ |
2033 | PROCESSOR_PENTIUM, | |
2034 | PROCESSOR_PENTIUMPRO, | |
cfe1b18f | 2035 | PROCESSOR_GEODE, |
5bf0ebab RH |
2036 | PROCESSOR_K6, |
2037 | PROCESSOR_ATHLON, | |
2038 | PROCESSOR_PENTIUM4, | |
4977bab6 | 2039 | PROCESSOR_K8, |
89c43c0a | 2040 | PROCESSOR_NOCONA, |
ab247762 MK |
2041 | PROCESSOR_CORE2_32, |
2042 | PROCESSOR_CORE2_64, | |
b2b01543 BS |
2043 | PROCESSOR_COREI7_32, |
2044 | PROCESSOR_COREI7_64, | |
d326eaf0 JH |
2045 | PROCESSOR_GENERIC32, |
2046 | PROCESSOR_GENERIC64, | |
21efb4d4 | 2047 | PROCESSOR_AMDFAM10, |
1133125e | 2048 | PROCESSOR_BDVER1, |
4d652a18 | 2049 | PROCESSOR_BDVER2, |
14b52538 | 2050 | PROCESSOR_BTVER1, |
b6837b94 | 2051 | PROCESSOR_ATOM, |
5bf0ebab RH |
2052 | PROCESSOR_max |
2053 | }; | |
2054 | ||
9e555526 | 2055 | extern enum processor_type ix86_tune; |
5bf0ebab | 2056 | extern enum processor_type ix86_arch; |
5bf0ebab | 2057 | |
8362f420 JH |
2058 | /* Size of the RED_ZONE area. */ |
2059 | #define RED_ZONE_SIZE 128 | |
2060 | /* Reserved area of the red zone for temporaries. */ | |
2061 | #define RED_ZONE_RESERVE 8 | |
c93e80a5 | 2062 | |
95899b34 | 2063 | extern unsigned int ix86_preferred_stack_boundary; |
2e3f842f | 2064 | extern unsigned int ix86_incoming_stack_boundary; |
5bf0ebab RH |
2065 | |
2066 | /* Smallest class containing REGNO. */ | |
2067 | extern enum reg_class const regclass_map[FIRST_PSEUDO_REGISTER]; | |
2068 | ||
0948ccb2 PB |
2069 | enum ix86_fpcmp_strategy { |
2070 | IX86_FPCMP_SAHF, | |
2071 | IX86_FPCMP_COMI, | |
2072 | IX86_FPCMP_ARITH | |
2073 | }; | |
22fb740d JH |
2074 | \f |
2075 | /* To properly truncate FP values into integers, we need to set i387 control | |
2076 | word. We can't emit proper mode switching code before reload, as spills | |
2077 | generated by reload may truncate values incorrectly, but we still can avoid | |
2078 | redundant computation of new control word by the mode switching pass. | |
2079 | The fldcw instructions are still emitted redundantly, but this is probably | |
2080 | not going to be noticeable problem, as most CPUs do have fast path for | |
fce5a9f2 | 2081 | the sequence. |
22fb740d JH |
2082 | |
2083 | The machinery is to emit simple truncation instructions and split them | |
2084 | before reload to instructions having USEs of two memory locations that | |
2085 | are filled by this code to old and new control word. | |
fce5a9f2 | 2086 | |
22fb740d JH |
2087 | Post-reload pass may be later used to eliminate the redundant fildcw if |
2088 | needed. */ | |
2089 | ||
ff680eb1 UB |
2090 | enum ix86_entity |
2091 | { | |
2092 | I387_TRUNC = 0, | |
2093 | I387_FLOOR, | |
2094 | I387_CEIL, | |
2095 | I387_MASK_PM, | |
2096 | MAX_386_ENTITIES | |
2097 | }; | |
2098 | ||
1cba2b96 | 2099 | enum ix86_stack_slot |
ff680eb1 | 2100 | { |
80dcd3aa UB |
2101 | SLOT_VIRTUAL = 0, |
2102 | SLOT_TEMP, | |
ff680eb1 UB |
2103 | SLOT_CW_STORED, |
2104 | SLOT_CW_TRUNC, | |
2105 | SLOT_CW_FLOOR, | |
2106 | SLOT_CW_CEIL, | |
2107 | SLOT_CW_MASK_PM, | |
2108 | MAX_386_STACK_LOCALS | |
2109 | }; | |
22fb740d JH |
2110 | |
2111 | /* Define this macro if the port needs extra instructions inserted | |
2112 | for mode switching in an optimizing compilation. */ | |
2113 | ||
ff680eb1 UB |
2114 | #define OPTIMIZE_MODE_SWITCHING(ENTITY) \ |
2115 | ix86_optimize_mode_switching[(ENTITY)] | |
22fb740d JH |
2116 | |
2117 | /* If you define `OPTIMIZE_MODE_SWITCHING', you have to define this as | |
2118 | initializer for an array of integers. Each initializer element N | |
2119 | refers to an entity that needs mode switching, and specifies the | |
2120 | number of different modes that might need to be set for this | |
2121 | entity. The position of the initializer in the initializer - | |
2122 | starting counting at zero - determines the integer that is used to | |
2123 | refer to the mode-switched entity in question. */ | |
2124 | ||
ff680eb1 UB |
2125 | #define NUM_MODES_FOR_MODE_SWITCHING \ |
2126 | { I387_CW_ANY, I387_CW_ANY, I387_CW_ANY, I387_CW_ANY } | |
22fb740d JH |
2127 | |
2128 | /* ENTITY is an integer specifying a mode-switched entity. If | |
2129 | `OPTIMIZE_MODE_SWITCHING' is defined, you must define this macro to | |
2130 | return an integer value not larger than the corresponding element | |
2131 | in `NUM_MODES_FOR_MODE_SWITCHING', to denote the mode that ENTITY | |
ff680eb1 UB |
2132 | must be switched into prior to the execution of INSN. */ |
2133 | ||
2134 | #define MODE_NEEDED(ENTITY, I) ix86_mode_needed ((ENTITY), (I)) | |
22fb740d JH |
2135 | |
2136 | /* This macro specifies the order in which modes for ENTITY are | |
2137 | processed. 0 is the highest priority. */ | |
2138 | ||
d9a5f180 | 2139 | #define MODE_PRIORITY_TO_MODE(ENTITY, N) (N) |
22fb740d JH |
2140 | |
2141 | /* Generate one or more insns to set ENTITY to MODE. HARD_REG_LIVE | |
2142 | is the set of hard registers live at the point where the insn(s) | |
2143 | are to be inserted. */ | |
2144 | ||
2145 | #define EMIT_MODE_SET(ENTITY, MODE, HARD_REGS_LIVE) \ | |
1d1df0df | 2146 | ((MODE) != I387_CW_ANY && (MODE) != I387_CW_UNINITIALIZED \ |
ff680eb1 | 2147 | ? emit_i387_cw_initialization (MODE), 0 \ |
22fb740d | 2148 | : 0) |
ff680eb1 | 2149 | |
0f0138b6 JH |
2150 | \f |
2151 | /* Avoid renaming of stack registers, as doing so in combination with | |
2152 | scheduling just increases amount of live registers at time and in | |
2153 | the turn amount of fxch instructions needed. | |
2154 | ||
43f3a59d | 2155 | ??? Maybe Pentium chips benefits from renaming, someone can try.... */ |
0f0138b6 | 2156 | |
d9a5f180 | 2157 | #define HARD_REGNO_RENAME_OK(SRC, TARGET) \ |
fb84c7a0 | 2158 | (! IN_RANGE ((SRC), FIRST_STACK_REG, LAST_STACK_REG)) |
22fb740d | 2159 | |
3b3c6a3f | 2160 | \f |
e91f04de | 2161 | #define FASTCALL_PREFIX '@' |
fa1a0d02 | 2162 | \f |
ec7ded37 | 2163 | /* Machine specific frame tracking during prologue/epilogue generation. */ |
cd9c1ca8 | 2164 | |
604a6be9 | 2165 | #ifndef USED_FOR_TARGET |
ec7ded37 | 2166 | struct GTY(()) machine_frame_state |
cd9c1ca8 | 2167 | { |
ec7ded37 RH |
2168 | /* This pair tracks the currently active CFA as reg+offset. When reg |
2169 | is drap_reg, we don't bother trying to record here the real CFA when | |
2170 | it might really be a DW_CFA_def_cfa_expression. */ | |
2171 | rtx cfa_reg; | |
2172 | HOST_WIDE_INT cfa_offset; | |
2173 | ||
2174 | /* The current offset (canonically from the CFA) of ESP and EBP. | |
2175 | When stack frame re-alignment is active, these may not be relative | |
2176 | to the CFA. However, in all cases they are relative to the offsets | |
2177 | of the saved registers stored in ix86_frame. */ | |
2178 | HOST_WIDE_INT sp_offset; | |
2179 | HOST_WIDE_INT fp_offset; | |
2180 | ||
2181 | /* The size of the red-zone that may be assumed for the purposes of | |
2182 | eliding register restore notes in the epilogue. This may be zero | |
2183 | if no red-zone is in effect, or may be reduced from the real | |
2184 | red-zone value by a maximum runtime stack re-alignment value. */ | |
2185 | int red_zone_offset; | |
2186 | ||
2187 | /* Indicate whether each of ESP, EBP or DRAP currently holds a valid | |
2188 | value within the frame. If false then the offset above should be | |
2189 | ignored. Note that DRAP, if valid, *always* points to the CFA and | |
2190 | thus has an offset of zero. */ | |
2191 | BOOL_BITFIELD sp_valid : 1; | |
2192 | BOOL_BITFIELD fp_valid : 1; | |
2193 | BOOL_BITFIELD drap_valid : 1; | |
c9f4c451 RH |
2194 | |
2195 | /* Indicate whether the local stack frame has been re-aligned. When | |
2196 | set, the SP/FP offsets above are relative to the aligned frame | |
2197 | and not the CFA. */ | |
2198 | BOOL_BITFIELD realigned : 1; | |
cd9c1ca8 RH |
2199 | }; |
2200 | ||
f81c9774 RH |
2201 | /* Private to winnt.c. */ |
2202 | struct seh_frame_state; | |
2203 | ||
d1b38208 | 2204 | struct GTY(()) machine_function { |
fa1a0d02 JH |
2205 | struct stack_local_entry *stack_locals; |
2206 | const char *some_ld_name; | |
4aab97f9 L |
2207 | int varargs_gpr_size; |
2208 | int varargs_fpr_size; | |
ff680eb1 | 2209 | int optimize_mode_switching[MAX_386_ENTITIES]; |
3452586b RH |
2210 | |
2211 | /* Number of saved registers USE_FAST_PROLOGUE_EPILOGUE | |
2212 | has been computed for. */ | |
2213 | int use_fast_prologue_epilogue_nregs; | |
2214 | ||
7458026b ILT |
2215 | /* For -fsplit-stack support: A stack local which holds a pointer to |
2216 | the stack arguments for a function with a variable number of | |
2217 | arguments. This is set at the start of the function and is used | |
2218 | to initialize the overflow_arg_area field of the va_list | |
2219 | structure. */ | |
2220 | rtx split_stack_varargs_pointer; | |
2221 | ||
3452586b RH |
2222 | /* This value is used for amd64 targets and specifies the current abi |
2223 | to be used. MS_ABI means ms abi. Otherwise SYSV_ABI means sysv abi. */ | |
25efe060 | 2224 | ENUM_BITFIELD(calling_abi) call_abi : 8; |
3452586b RH |
2225 | |
2226 | /* Nonzero if the function accesses a previous frame. */ | |
2227 | BOOL_BITFIELD accesses_prev_frame : 1; | |
2228 | ||
2229 | /* Nonzero if the function requires a CLD in the prologue. */ | |
2230 | BOOL_BITFIELD needs_cld : 1; | |
2231 | ||
922e3e33 UB |
2232 | /* Set by ix86_compute_frame_layout and used by prologue/epilogue |
2233 | expander to determine the style used. */ | |
3452586b RH |
2234 | BOOL_BITFIELD use_fast_prologue_epilogue : 1; |
2235 | ||
5bf5a10b AO |
2236 | /* If true, the current function needs the default PIC register, not |
2237 | an alternate register (on x86) and must not use the red zone (on | |
2238 | x86_64), even if it's a leaf function. We don't want the | |
2239 | function to be regarded as non-leaf because TLS calls need not | |
2240 | affect register allocation. This flag is set when a TLS call | |
2241 | instruction is expanded within a function, and never reset, even | |
2242 | if all such instructions are optimized away. Use the | |
2243 | ix86_current_function_calls_tls_descriptor macro for a better | |
2244 | approximation. */ | |
3452586b RH |
2245 | BOOL_BITFIELD tls_descriptor_call_expanded_p : 1; |
2246 | ||
2247 | /* If true, the current function has a STATIC_CHAIN is placed on the | |
2248 | stack below the return address. */ | |
2249 | BOOL_BITFIELD static_chain_on_stack : 1; | |
25efe060 | 2250 | |
2767a7f2 L |
2251 | /* Nonzero if caller passes 256bit AVX modes. */ |
2252 | BOOL_BITFIELD caller_pass_avx256_p : 1; | |
2253 | ||
2254 | /* Nonzero if caller returns 256bit AVX modes. */ | |
2255 | BOOL_BITFIELD caller_return_avx256_p : 1; | |
2256 | ||
2257 | /* Nonzero if the current callee passes 256bit AVX modes. */ | |
2258 | BOOL_BITFIELD callee_pass_avx256_p : 1; | |
2259 | ||
2260 | /* Nonzero if the current callee returns 256bit AVX modes. */ | |
2261 | BOOL_BITFIELD callee_return_avx256_p : 1; | |
2262 | ||
617e6634 L |
2263 | /* Nonzero if rescan vzerouppers in the current function is needed. */ |
2264 | BOOL_BITFIELD rescan_vzeroupper_p : 1; | |
2265 | ||
ec7ded37 RH |
2266 | /* During prologue/epilogue generation, the current frame state. |
2267 | Otherwise, the frame state at the end of the prologue. */ | |
2268 | struct machine_frame_state fs; | |
f81c9774 RH |
2269 | |
2270 | /* During SEH output, this is non-null. */ | |
2271 | struct seh_frame_state * GTY((skip(""))) seh; | |
fa1a0d02 | 2272 | }; |
cd9c1ca8 | 2273 | #endif |
fa1a0d02 JH |
2274 | |
2275 | #define ix86_stack_locals (cfun->machine->stack_locals) | |
4aab97f9 L |
2276 | #define ix86_varargs_gpr_size (cfun->machine->varargs_gpr_size) |
2277 | #define ix86_varargs_fpr_size (cfun->machine->varargs_fpr_size) | |
fa1a0d02 | 2278 | #define ix86_optimize_mode_switching (cfun->machine->optimize_mode_switching) |
922e3e33 | 2279 | #define ix86_current_function_needs_cld (cfun->machine->needs_cld) |
5bf5a10b AO |
2280 | #define ix86_tls_descriptor_calls_expanded_in_cfun \ |
2281 | (cfun->machine->tls_descriptor_call_expanded_p) | |
2282 | /* Since tls_descriptor_call_expanded is not cleared, even if all TLS | |
2283 | calls are optimized away, we try to detect cases in which it was | |
2284 | optimized away. Since such instructions (use (reg REG_SP)), we can | |
2285 | verify whether there's any such instruction live by testing that | |
2286 | REG_SP is live. */ | |
2287 | #define ix86_current_function_calls_tls_descriptor \ | |
6fb5fa3c | 2288 | (ix86_tls_descriptor_calls_expanded_in_cfun && df_regs_ever_live_p (SP_REG)) |
3452586b | 2289 | #define ix86_static_chain_on_stack (cfun->machine->static_chain_on_stack) |
249e6b63 | 2290 | |
1bc7c5b6 ZW |
2291 | /* Control behavior of x86_file_start. */ |
2292 | #define X86_FILE_START_VERSION_DIRECTIVE false | |
2293 | #define X86_FILE_START_FLTUSED false | |
2294 | ||
7dcbf659 JH |
2295 | /* Flag to mark data that is in the large address area. */ |
2296 | #define SYMBOL_FLAG_FAR_ADDR (SYMBOL_FLAG_MACH_DEP << 0) | |
2297 | #define SYMBOL_REF_FAR_ADDR_P(X) \ | |
2298 | ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_FAR_ADDR) != 0) | |
da489f73 RH |
2299 | |
2300 | /* Flags to mark dllimport/dllexport. Used by PE ports, but handy to | |
2301 | have defined always, to avoid ifdefing. */ | |
2302 | #define SYMBOL_FLAG_DLLIMPORT (SYMBOL_FLAG_MACH_DEP << 1) | |
2303 | #define SYMBOL_REF_DLLIMPORT_P(X) \ | |
2304 | ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLIMPORT) != 0) | |
2305 | ||
2306 | #define SYMBOL_FLAG_DLLEXPORT (SYMBOL_FLAG_MACH_DEP << 2) | |
2307 | #define SYMBOL_REF_DLLEXPORT_P(X) \ | |
2308 | ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0) | |
2309 | ||
7942e47e RY |
2310 | extern void debug_ready_dispatch (void); |
2311 | extern void debug_dispatch_window (int); | |
2312 | ||
91afcfa3 QN |
2313 | /* The value at zero is only defined for the BMI instructions |
2314 | LZCNT and TZCNT, not the BSR/BSF insns in the original isa. */ | |
2315 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
2316 | ((VALUE) = GET_MODE_BITSIZE (MODE), TARGET_BMI) | |
2317 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
5fcafa60 | 2318 | ((VALUE) = GET_MODE_BITSIZE (MODE), TARGET_LZCNT) |
91afcfa3 QN |
2319 | |
2320 | ||
b8ce4e94 KT |
2321 | /* Flags returned by ix86_get_callcvt (). */ |
2322 | #define IX86_CALLCVT_CDECL 0x1 | |
2323 | #define IX86_CALLCVT_STDCALL 0x2 | |
2324 | #define IX86_CALLCVT_FASTCALL 0x4 | |
2325 | #define IX86_CALLCVT_THISCALL 0x8 | |
2326 | #define IX86_CALLCVT_REGPARM 0x10 | |
2327 | #define IX86_CALLCVT_SSEREGPARM 0x20 | |
2328 | ||
2329 | #define IX86_BASE_CALLCVT(FLAGS) \ | |
2330 | ((FLAGS) & (IX86_CALLCVT_CDECL | IX86_CALLCVT_STDCALL \ | |
2331 | | IX86_CALLCVT_FASTCALL | IX86_CALLCVT_THISCALL)) | |
2332 | ||
b86b9f44 MM |
2333 | #define RECIP_MASK_NONE 0x00 |
2334 | #define RECIP_MASK_DIV 0x01 | |
2335 | #define RECIP_MASK_SQRT 0x02 | |
2336 | #define RECIP_MASK_VEC_DIV 0x04 | |
2337 | #define RECIP_MASK_VEC_SQRT 0x08 | |
2338 | #define RECIP_MASK_ALL (RECIP_MASK_DIV | RECIP_MASK_SQRT \ | |
2339 | | RECIP_MASK_VEC_DIV | RECIP_MASK_VEC_SQRT) | |
bbe996ec | 2340 | #define RECIP_MASK_DEFAULT (RECIP_MASK_VEC_DIV | RECIP_MASK_VEC_SQRT) |
b86b9f44 MM |
2341 | |
2342 | #define TARGET_RECIP_DIV ((recip_mask & RECIP_MASK_DIV) != 0) | |
2343 | #define TARGET_RECIP_SQRT ((recip_mask & RECIP_MASK_SQRT) != 0) | |
2344 | #define TARGET_RECIP_VEC_DIV ((recip_mask & RECIP_MASK_VEC_DIV) != 0) | |
2345 | #define TARGET_RECIP_VEC_SQRT ((recip_mask & RECIP_MASK_VEC_SQRT) != 0) | |
2346 | ||
c98f8742 JVA |
2347 | /* |
2348 | Local variables: | |
2349 | version-control: t | |
2350 | End: | |
2351 | */ |