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| author | Lorry <lorry@roadtrain.codethink.co.uk> | 2012-01-09 13:47:42 +0000 |
|---|---|---|
| committer | Lorry <lorry@roadtrain.codethink.co.uk> | 2012-01-09 13:47:42 +0000 |
| commit | b4a5df67f1382a33f4535eb1b10600ca52d294d3 (patch) | |
| tree | d4571b191c2cfc0f5045bd27b54f8a48e70787a8 /gcc/config/i386/i386.h | |
| download | gcc-tarball-b4a5df67f1382a33f4535eb1b10600ca52d294d3.tar.gz | |
Tarball conversion
Diffstat (limited to 'gcc/config/i386/i386.h')
| -rw-r--r-- | gcc/config/i386/i386.h | 2378 |
1 files changed, 2378 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h new file mode 100644 index 0000000000..dcb3f295ac --- /dev/null +++ b/gcc/config/i386/i386.h @@ -0,0 +1,2378 @@ +/* Definitions of target machine for GCC for IA-32. + Copyright (C) 1988, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3, or (at your option) +any later version. + +GCC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +/* The purpose of this file is to define the characteristics of the i386, + independent of assembler syntax or operating system. + + Three other files build on this one to describe a specific assembler syntax: + bsd386.h, att386.h, and sun386.h. + + The actual tm.h file for a particular system should include + this file, and then the file for the appropriate assembler syntax. + + Many macros that specify assembler syntax are omitted entirely from + this file because they really belong in the files for particular + assemblers. These include RP, IP, LPREFIX, PUT_OP_SIZE, USE_STAR, + ADDR_BEG, ADDR_END, PRINT_IREG, PRINT_SCALE, PRINT_B_I_S, and many + that start with ASM_ or end in ASM_OP. */ + +/* Redefines for option macros. */ + +#define TARGET_64BIT OPTION_ISA_64BIT +#define TARGET_MMX OPTION_ISA_MMX +#define TARGET_3DNOW OPTION_ISA_3DNOW +#define TARGET_3DNOW_A OPTION_ISA_3DNOW_A +#define TARGET_SSE OPTION_ISA_SSE +#define TARGET_SSE2 OPTION_ISA_SSE2 +#define TARGET_SSE3 OPTION_ISA_SSE3 +#define TARGET_SSSE3 OPTION_ISA_SSSE3 +#define TARGET_SSE4_1 OPTION_ISA_SSE4_1 +#define TARGET_SSE4_2 OPTION_ISA_SSE4_2 +#define TARGET_AVX OPTION_ISA_AVX +#define TARGET_FMA OPTION_ISA_FMA +#define TARGET_SSE4A OPTION_ISA_SSE4A +#define TARGET_FMA4 OPTION_ISA_FMA4 +#define TARGET_XOP OPTION_ISA_XOP +#define TARGET_LWP OPTION_ISA_LWP +#define TARGET_ROUND OPTION_ISA_ROUND +#define TARGET_ABM OPTION_ISA_ABM +#define TARGET_BMI OPTION_ISA_BMI +#define TARGET_TBM OPTION_ISA_TBM +#define TARGET_POPCNT OPTION_ISA_POPCNT +#define TARGET_SAHF OPTION_ISA_SAHF +#define TARGET_MOVBE OPTION_ISA_MOVBE +#define TARGET_CRC32 OPTION_ISA_CRC32 +#define TARGET_AES OPTION_ISA_AES +#define TARGET_PCLMUL OPTION_ISA_PCLMUL +#define TARGET_CMPXCHG16B OPTION_ISA_CX16 +#define TARGET_FSGSBASE OPTION_ISA_FSGSBASE +#define TARGET_RDRND OPTION_ISA_RDRND +#define TARGET_F16C OPTION_ISA_F16C + + +/* SSE4.1 defines round instructions */ +#define OPTION_MASK_ISA_ROUND OPTION_MASK_ISA_SSE4_1 +#define OPTION_ISA_ROUND ((ix86_isa_flags & OPTION_MASK_ISA_ROUND) != 0) + +#include "config/vxworks-dummy.h" + +/* Algorithm to expand string function with. */ +enum stringop_alg +{ + no_stringop, + libcall, + rep_prefix_1_byte, + rep_prefix_4_byte, + rep_prefix_8_byte, + loop_1_byte, + loop, + unrolled_loop +}; + +#define MAX_STRINGOP_ALGS 4 + +/* Specify what algorithm to use for stringops on known size. + When size is unknown, the UNKNOWN_SIZE alg is used. When size is + known at compile time or estimated via feedback, the SIZE array + is walked in order until MAX is greater then the estimate (or -1 + means infinity). Corresponding ALG is used then. + For example initializer: + {{256, loop}, {-1, rep_prefix_4_byte}} + will use loop for blocks smaller or equal to 256 bytes, rep prefix will + be used otherwise. */ +struct stringop_algs +{ + const enum stringop_alg unknown_size; + const struct stringop_strategy { + const int max; + const enum stringop_alg alg; + } size [MAX_STRINGOP_ALGS]; +}; + +/* Define the specific costs for a given cpu */ + +struct processor_costs { + const int add; /* cost of an add instruction */ + const int lea; /* cost of a lea instruction */ + const int shift_var; /* variable shift costs */ + const int shift_const; /* constant shift costs */ + const int mult_init[5]; /* cost of starting a multiply + in QImode, HImode, SImode, DImode, TImode*/ + const int mult_bit; /* cost of multiply per each bit set */ + const int divide[5]; /* cost of a divide/mod + in QImode, HImode, SImode, DImode, TImode*/ + int movsx; /* The cost of movsx operation. */ + int movzx; /* The cost of movzx operation. */ + const int large_insn; /* insns larger than this cost more */ + const int move_ratio; /* The threshold of number of scalar + memory-to-memory move insns. */ + const int movzbl_load; /* cost of loading using movzbl */ + const int int_load[3]; /* cost of loading integer registers + in QImode, HImode and SImode relative + to reg-reg move (2). */ + const int int_store[3]; /* cost of storing integer register + in QImode, HImode and SImode */ + const int fp_move; /* cost of reg,reg fld/fst */ + const int fp_load[3]; /* cost of loading FP register + in SFmode, DFmode and XFmode */ + const int fp_store[3]; /* cost of storing FP register + in SFmode, DFmode and XFmode */ + const int mmx_move; /* cost of moving MMX register. */ + const int mmx_load[2]; /* cost of loading MMX register + in SImode and DImode */ + const int mmx_store[2]; /* cost of storing MMX register + in SImode and DImode */ + const int sse_move; /* cost of moving SSE register. */ + const int sse_load[3]; /* cost of loading SSE register + in SImode, DImode and TImode*/ + const int sse_store[3]; /* cost of storing SSE register + in SImode, DImode and TImode*/ + const int mmxsse_to_integer; /* cost of moving mmxsse register to + integer and vice versa. */ + const int l1_cache_size; /* size of l1 cache, in kilobytes. */ + const int l2_cache_size; /* size of l2 cache, in kilobytes. */ + const int prefetch_block; /* bytes moved to cache for prefetch. */ + const int simultaneous_prefetches; /* number of parallel prefetch + operations. */ + const int branch_cost; /* Default value for BRANCH_COST. */ + const int fadd; /* cost of FADD and FSUB instructions. */ + const int fmul; /* cost of FMUL instruction. */ + const int fdiv; /* cost of FDIV instruction. */ + const int fabs; /* cost of FABS instruction. */ + const int fchs; /* cost of FCHS instruction. */ + const int fsqrt; /* cost of FSQRT instruction. */ + /* Specify what algorithm + to use for stringops on unknown size. */ + struct stringop_algs memcpy[2], memset[2]; + const int scalar_stmt_cost; /* Cost of any scalar operation, excluding + load and store. */ + const int scalar_load_cost; /* Cost of scalar load. */ + const int scalar_store_cost; /* Cost of scalar store. */ + const int vec_stmt_cost; /* Cost of any vector operation, excluding + load, store, vector-to-scalar and + scalar-to-vector operation. */ + const int vec_to_scalar_cost; /* Cost of vect-to-scalar operation. */ + const int scalar_to_vec_cost; /* Cost of scalar-to-vector operation. */ + const int vec_align_load_cost; /* Cost of aligned vector load. */ + const int vec_unalign_load_cost; /* Cost of unaligned vector load. */ + const int vec_store_cost; /* Cost of vector store. */ + const int cond_taken_branch_cost; /* Cost of taken branch for vectorizer + cost model. */ + const int cond_not_taken_branch_cost;/* Cost of not taken branch for + vectorizer cost model. */ +}; + +extern const struct processor_costs *ix86_cost; +extern const struct processor_costs ix86_size_cost; + +#define ix86_cur_cost() \ + (optimize_insn_for_size_p () ? &ix86_size_cost: ix86_cost) + +/* Macros used in the machine description to test the flags. */ + +/* configure can arrange to make this 2, to force a 486. */ + +#ifndef TARGET_CPU_DEFAULT +#define TARGET_CPU_DEFAULT TARGET_CPU_DEFAULT_generic +#endif + +#ifndef TARGET_FPMATH_DEFAULT +#define TARGET_FPMATH_DEFAULT \ + (TARGET_64BIT && TARGET_SSE ? FPMATH_SSE : FPMATH_387) +#endif + +#define TARGET_FLOAT_RETURNS_IN_80387 TARGET_FLOAT_RETURNS + +/* 64bit Sledgehammer mode. For libgcc2 we make sure this is a + compile-time constant. */ +#ifdef IN_LIBGCC2 +#undef TARGET_64BIT +#ifdef __x86_64__ +#define TARGET_64BIT 1 +#else +#define TARGET_64BIT 0 +#endif +#else +#ifndef TARGET_BI_ARCH +#undef TARGET_64BIT +#if TARGET_64BIT_DEFAULT +#define TARGET_64BIT 1 +#else +#define TARGET_64BIT 0 +#endif +#endif +#endif + +#define HAS_LONG_COND_BRANCH 1 +#define HAS_LONG_UNCOND_BRANCH 1 + +#define TARGET_386 (ix86_tune == PROCESSOR_I386) +#define TARGET_486 (ix86_tune == PROCESSOR_I486) +#define TARGET_PENTIUM (ix86_tune == PROCESSOR_PENTIUM) +#define TARGET_PENTIUMPRO (ix86_tune == PROCESSOR_PENTIUMPRO) +#define TARGET_GEODE (ix86_tune == PROCESSOR_GEODE) +#define TARGET_K6 (ix86_tune == PROCESSOR_K6) +#define TARGET_ATHLON (ix86_tune == PROCESSOR_ATHLON) +#define TARGET_PENTIUM4 (ix86_tune == PROCESSOR_PENTIUM4) +#define TARGET_K8 (ix86_tune == PROCESSOR_K8) +#define TARGET_ATHLON_K8 (TARGET_K8 || TARGET_ATHLON) +#define TARGET_NOCONA (ix86_tune == PROCESSOR_NOCONA) +#define TARGET_CORE2_32 (ix86_tune == PROCESSOR_CORE2_32) +#define TARGET_CORE2_64 (ix86_tune == PROCESSOR_CORE2_64) +#define TARGET_CORE2 (TARGET_CORE2_32 || TARGET_CORE2_64) +#define TARGET_COREI7_32 (ix86_tune == PROCESSOR_COREI7_32) +#define TARGET_COREI7_64 (ix86_tune == PROCESSOR_COREI7_64) +#define TARGET_COREI7 (TARGET_COREI7_32 || TARGET_COREI7_64) +#define TARGET_GENERIC32 (ix86_tune == PROCESSOR_GENERIC32) +#define TARGET_GENERIC64 (ix86_tune == PROCESSOR_GENERIC64) +#define TARGET_GENERIC (TARGET_GENERIC32 || TARGET_GENERIC64) +#define TARGET_AMDFAM10 (ix86_tune == PROCESSOR_AMDFAM10) +#define TARGET_BDVER1 (ix86_tune == PROCESSOR_BDVER1) +#define TARGET_BTVER1 (ix86_tune == PROCESSOR_BTVER1) +#define TARGET_ATOM (ix86_tune == PROCESSOR_ATOM) + +/* Feature tests against the various tunings. */ +enum ix86_tune_indices { + X86_TUNE_USE_LEAVE, + X86_TUNE_PUSH_MEMORY, + X86_TUNE_ZERO_EXTEND_WITH_AND, + X86_TUNE_UNROLL_STRLEN, + X86_TUNE_DEEP_BRANCH_PREDICTION, + X86_TUNE_BRANCH_PREDICTION_HINTS, + X86_TUNE_DOUBLE_WITH_ADD, + X86_TUNE_USE_SAHF, + X86_TUNE_MOVX, + X86_TUNE_PARTIAL_REG_STALL, + X86_TUNE_PARTIAL_FLAG_REG_STALL, + X86_TUNE_USE_HIMODE_FIOP, + X86_TUNE_USE_SIMODE_FIOP, + X86_TUNE_USE_MOV0, + X86_TUNE_USE_CLTD, + X86_TUNE_USE_XCHGB, + X86_TUNE_SPLIT_LONG_MOVES, + X86_TUNE_READ_MODIFY_WRITE, + X86_TUNE_READ_MODIFY, + X86_TUNE_PROMOTE_QIMODE, + X86_TUNE_FAST_PREFIX, + X86_TUNE_SINGLE_STRINGOP, + X86_TUNE_QIMODE_MATH, + X86_TUNE_HIMODE_MATH, + X86_TUNE_PROMOTE_QI_REGS, + X86_TUNE_PROMOTE_HI_REGS, + X86_TUNE_SINGLE_POP, + X86_TUNE_DOUBLE_POP, + X86_TUNE_SINGLE_PUSH, + X86_TUNE_DOUBLE_PUSH, + X86_TUNE_INTEGER_DFMODE_MOVES, + X86_TUNE_PARTIAL_REG_DEPENDENCY, + X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY, + X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL, + X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL, + X86_TUNE_SSE_PACKED_SINGLE_INSN_OPTIMAL, + X86_TUNE_SSE_SPLIT_REGS, + X86_TUNE_SSE_TYPELESS_STORES, + X86_TUNE_SSE_LOAD0_BY_PXOR, + X86_TUNE_MEMORY_MISMATCH_STALL, + X86_TUNE_PROLOGUE_USING_MOVE, + X86_TUNE_EPILOGUE_USING_MOVE, + X86_TUNE_SHIFT1, + X86_TUNE_USE_FFREEP, + X86_TUNE_INTER_UNIT_MOVES, + X86_TUNE_INTER_UNIT_CONVERSIONS, + X86_TUNE_FOUR_JUMP_LIMIT, + X86_TUNE_SCHEDULE, + X86_TUNE_USE_BT, + X86_TUNE_USE_INCDEC, + X86_TUNE_PAD_RETURNS, + X86_TUNE_PAD_SHORT_FUNCTION, + X86_TUNE_EXT_80387_CONSTANTS, + X86_TUNE_SHORTEN_X87_SSE, + X86_TUNE_AVOID_VECTOR_DECODE, + X86_TUNE_PROMOTE_HIMODE_IMUL, + X86_TUNE_SLOW_IMUL_IMM32_MEM, + X86_TUNE_SLOW_IMUL_IMM8, + X86_TUNE_MOVE_M1_VIA_OR, + X86_TUNE_NOT_UNPAIRABLE, + X86_TUNE_NOT_VECTORMODE, + X86_TUNE_USE_VECTOR_FP_CONVERTS, + X86_TUNE_USE_VECTOR_CONVERTS, + X86_TUNE_FUSE_CMP_AND_BRANCH, + X86_TUNE_OPT_AGU, + X86_TUNE_VECTORIZE_DOUBLE, + X86_TUNE_AVX128_OPTIMAL, + + X86_TUNE_LAST +}; + +extern unsigned char ix86_tune_features[X86_TUNE_LAST]; + +#define TARGET_USE_LEAVE ix86_tune_features[X86_TUNE_USE_LEAVE] +#define TARGET_PUSH_MEMORY ix86_tune_features[X86_TUNE_PUSH_MEMORY] +#define TARGET_ZERO_EXTEND_WITH_AND \ + ix86_tune_features[X86_TUNE_ZERO_EXTEND_WITH_AND] +#define TARGET_UNROLL_STRLEN ix86_tune_features[X86_TUNE_UNROLL_STRLEN] +#define TARGET_DEEP_BRANCH_PREDICTION \ + ix86_tune_features[X86_TUNE_DEEP_BRANCH_PREDICTION] +#define TARGET_BRANCH_PREDICTION_HINTS \ + ix86_tune_features[X86_TUNE_BRANCH_PREDICTION_HINTS] +#define TARGET_DOUBLE_WITH_ADD ix86_tune_features[X86_TUNE_DOUBLE_WITH_ADD] +#define TARGET_USE_SAHF ix86_tune_features[X86_TUNE_USE_SAHF] +#define TARGET_MOVX ix86_tune_features[X86_TUNE_MOVX] +#define TARGET_PARTIAL_REG_STALL ix86_tune_features[X86_TUNE_PARTIAL_REG_STALL] +#define TARGET_PARTIAL_FLAG_REG_STALL \ + ix86_tune_features[X86_TUNE_PARTIAL_FLAG_REG_STALL] +#define TARGET_USE_HIMODE_FIOP ix86_tune_features[X86_TUNE_USE_HIMODE_FIOP] +#define TARGET_USE_SIMODE_FIOP ix86_tune_features[X86_TUNE_USE_SIMODE_FIOP] +#define TARGET_USE_MOV0 ix86_tune_features[X86_TUNE_USE_MOV0] +#define TARGET_USE_CLTD ix86_tune_features[X86_TUNE_USE_CLTD] +#define TARGET_USE_XCHGB ix86_tune_features[X86_TUNE_USE_XCHGB] +#define TARGET_SPLIT_LONG_MOVES ix86_tune_features[X86_TUNE_SPLIT_LONG_MOVES] +#define TARGET_READ_MODIFY_WRITE ix86_tune_features[X86_TUNE_READ_MODIFY_WRITE] +#define TARGET_READ_MODIFY ix86_tune_features[X86_TUNE_READ_MODIFY] +#define TARGET_PROMOTE_QImode ix86_tune_features[X86_TUNE_PROMOTE_QIMODE] +#define TARGET_FAST_PREFIX ix86_tune_features[X86_TUNE_FAST_PREFIX] +#define TARGET_SINGLE_STRINGOP ix86_tune_features[X86_TUNE_SINGLE_STRINGOP] +#define TARGET_QIMODE_MATH ix86_tune_features[X86_TUNE_QIMODE_MATH] +#define TARGET_HIMODE_MATH ix86_tune_features[X86_TUNE_HIMODE_MATH] +#define TARGET_PROMOTE_QI_REGS ix86_tune_features[X86_TUNE_PROMOTE_QI_REGS] +#define TARGET_PROMOTE_HI_REGS ix86_tune_features[X86_TUNE_PROMOTE_HI_REGS] +#define TARGET_SINGLE_POP ix86_tune_features[X86_TUNE_SINGLE_POP] +#define TARGET_DOUBLE_POP ix86_tune_features[X86_TUNE_DOUBLE_POP] +#define TARGET_SINGLE_PUSH ix86_tune_features[X86_TUNE_SINGLE_PUSH] +#define TARGET_DOUBLE_PUSH ix86_tune_features[X86_TUNE_DOUBLE_PUSH] +#define TARGET_INTEGER_DFMODE_MOVES \ + ix86_tune_features[X86_TUNE_INTEGER_DFMODE_MOVES] +#define TARGET_PARTIAL_REG_DEPENDENCY \ + ix86_tune_features[X86_TUNE_PARTIAL_REG_DEPENDENCY] +#define TARGET_SSE_PARTIAL_REG_DEPENDENCY \ + ix86_tune_features[X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY] +#define TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \ + ix86_tune_features[X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL] +#define TARGET_SSE_UNALIGNED_STORE_OPTIMAL \ + ix86_tune_features[X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL] +#define TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL \ + ix86_tune_features[X86_TUNE_SSE_PACKED_SINGLE_INSN_OPTIMAL] +#define TARGET_SSE_SPLIT_REGS ix86_tune_features[X86_TUNE_SSE_SPLIT_REGS] +#define TARGET_SSE_TYPELESS_STORES \ + ix86_tune_features[X86_TUNE_SSE_TYPELESS_STORES] +#define TARGET_SSE_LOAD0_BY_PXOR ix86_tune_features[X86_TUNE_SSE_LOAD0_BY_PXOR] +#define TARGET_MEMORY_MISMATCH_STALL \ + ix86_tune_features[X86_TUNE_MEMORY_MISMATCH_STALL] +#define TARGET_PROLOGUE_USING_MOVE \ + ix86_tune_features[X86_TUNE_PROLOGUE_USING_MOVE] +#define TARGET_EPILOGUE_USING_MOVE \ + ix86_tune_features[X86_TUNE_EPILOGUE_USING_MOVE] +#define TARGET_SHIFT1 ix86_tune_features[X86_TUNE_SHIFT1] +#define TARGET_USE_FFREEP ix86_tune_features[X86_TUNE_USE_FFREEP] +#define TARGET_INTER_UNIT_MOVES ix86_tune_features[X86_TUNE_INTER_UNIT_MOVES] +#define TARGET_INTER_UNIT_CONVERSIONS\ + ix86_tune_features[X86_TUNE_INTER_UNIT_CONVERSIONS] +#define TARGET_FOUR_JUMP_LIMIT ix86_tune_features[X86_TUNE_FOUR_JUMP_LIMIT] +#define TARGET_SCHEDULE ix86_tune_features[X86_TUNE_SCHEDULE] +#define TARGET_USE_BT ix86_tune_features[X86_TUNE_USE_BT] +#define TARGET_USE_INCDEC ix86_tune_features[X86_TUNE_USE_INCDEC] +#define TARGET_PAD_RETURNS ix86_tune_features[X86_TUNE_PAD_RETURNS] +#define TARGET_PAD_SHORT_FUNCTION \ + ix86_tune_features[X86_TUNE_PAD_SHORT_FUNCTION] +#define TARGET_EXT_80387_CONSTANTS \ + ix86_tune_features[X86_TUNE_EXT_80387_CONSTANTS] +#define TARGET_SHORTEN_X87_SSE ix86_tune_features[X86_TUNE_SHORTEN_X87_SSE] +#define TARGET_AVOID_VECTOR_DECODE \ + ix86_tune_features[X86_TUNE_AVOID_VECTOR_DECODE] +#define TARGET_TUNE_PROMOTE_HIMODE_IMUL \ + ix86_tune_features[X86_TUNE_PROMOTE_HIMODE_IMUL] +#define TARGET_SLOW_IMUL_IMM32_MEM \ + ix86_tune_features[X86_TUNE_SLOW_IMUL_IMM32_MEM] +#define TARGET_SLOW_IMUL_IMM8 ix86_tune_features[X86_TUNE_SLOW_IMUL_IMM8] +#define TARGET_MOVE_M1_VIA_OR ix86_tune_features[X86_TUNE_MOVE_M1_VIA_OR] +#define TARGET_NOT_UNPAIRABLE ix86_tune_features[X86_TUNE_NOT_UNPAIRABLE] +#define TARGET_NOT_VECTORMODE ix86_tune_features[X86_TUNE_NOT_VECTORMODE] +#define TARGET_USE_VECTOR_FP_CONVERTS \ + ix86_tune_features[X86_TUNE_USE_VECTOR_FP_CONVERTS] +#define TARGET_USE_VECTOR_CONVERTS \ + ix86_tune_features[X86_TUNE_USE_VECTOR_CONVERTS] +#define TARGET_FUSE_CMP_AND_BRANCH \ + ix86_tune_features[X86_TUNE_FUSE_CMP_AND_BRANCH] +#define TARGET_OPT_AGU ix86_tune_features[X86_TUNE_OPT_AGU] +#define TARGET_VECTORIZE_DOUBLE \ + ix86_tune_features[X86_TUNE_VECTORIZE_DOUBLE] +#define TARGET_AVX128_OPTIMAL \ + ix86_tune_features[X86_TUNE_AVX128_OPTIMAL] + +/* Feature tests against the various architecture variations. */ +enum ix86_arch_indices { + X86_ARCH_CMOVE, /* || TARGET_SSE */ + X86_ARCH_CMPXCHG, + X86_ARCH_CMPXCHG8B, + X86_ARCH_XADD, + X86_ARCH_BSWAP, + + X86_ARCH_LAST +}; + +extern unsigned char ix86_arch_features[X86_ARCH_LAST]; + +#define TARGET_CMOVE ix86_arch_features[X86_ARCH_CMOVE] +#define TARGET_CMPXCHG ix86_arch_features[X86_ARCH_CMPXCHG] +#define TARGET_CMPXCHG8B ix86_arch_features[X86_ARCH_CMPXCHG8B] +#define TARGET_XADD ix86_arch_features[X86_ARCH_XADD] +#define TARGET_BSWAP ix86_arch_features[X86_ARCH_BSWAP] + +#define TARGET_FISTTP (TARGET_SSE3 && TARGET_80387) + +extern int x86_prefetch_sse; + +#define TARGET_PREFETCH_SSE x86_prefetch_sse + +#define ASSEMBLER_DIALECT (ix86_asm_dialect) + +#define TARGET_SSE_MATH ((ix86_fpmath & FPMATH_SSE) != 0) +#define TARGET_MIX_SSE_I387 \ + ((ix86_fpmath & (FPMATH_SSE | FPMATH_387)) == (FPMATH_SSE | FPMATH_387)) + +#define TARGET_GNU_TLS (ix86_tls_dialect == TLS_DIALECT_GNU) +#define TARGET_GNU2_TLS (ix86_tls_dialect == TLS_DIALECT_GNU2) +#define TARGET_ANY_GNU_TLS (TARGET_GNU_TLS || TARGET_GNU2_TLS) +#define TARGET_SUN_TLS 0 + +#ifndef TARGET_64BIT_DEFAULT +#define TARGET_64BIT_DEFAULT 0 +#endif +#ifndef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT +#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT 0 +#endif + +/* Fence to use after loop using storent. */ + +extern tree x86_mfence; +#define FENCE_FOLLOWING_MOVNT x86_mfence + +/* Once GDB has been enhanced to deal with functions without frame + pointers, we can change this to allow for elimination of + the frame pointer in leaf functions. */ +#define TARGET_DEFAULT 0 + +/* Extra bits to force. */ +#define TARGET_SUBTARGET_DEFAULT 0 +#define TARGET_SUBTARGET_ISA_DEFAULT 0 + +/* Extra bits to force on w/ 32-bit mode. */ +#define TARGET_SUBTARGET32_DEFAULT 0 +#define TARGET_SUBTARGET32_ISA_DEFAULT 0 + +/* Extra bits to force on w/ 64-bit mode. */ +#define TARGET_SUBTARGET64_DEFAULT 0 +#define TARGET_SUBTARGET64_ISA_DEFAULT 0 + +/* Replace MACH-O, ifdefs by in-line tests, where possible. + (a) Macros defined in config/i386/darwin.h */ +#define TARGET_MACHO 0 +#define TARGET_MACHO_BRANCH_ISLANDS 0 +#define MACHOPIC_ATT_STUB 0 +/* (b) Macros defined in config/darwin.h */ +#define MACHO_DYNAMIC_NO_PIC_P 0 +#define MACHOPIC_INDIRECT 0 +#define MACHOPIC_PURE 0 + +/* For the Windows 64-bit ABI. */ +#define TARGET_64BIT_MS_ABI (TARGET_64BIT && ix86_cfun_abi () == MS_ABI) + +/* This is re-defined by cygming.h. */ +#define TARGET_SEH 0 + +/* Available call abi. */ +enum calling_abi +{ + SYSV_ABI = 0, + MS_ABI = 1 +}; + +/* The abi used by target. */ +extern enum calling_abi ix86_abi; + +/* The default abi used by target. */ +#define DEFAULT_ABI SYSV_ABI + +/* Subtargets may reset this to 1 in order to enable 96-bit long double + with the rounding mode forced to 53 bits. */ +#define TARGET_96_ROUND_53_LONG_DOUBLE 0 + +/* -march=native handling only makes sense with compiler running on + an x86 or x86_64 chip. If changing this condition, also change + the condition in driver-i386.c. */ +#if defined(__i386__) || defined(__x86_64__) +/* In driver-i386.c. */ +extern const char *host_detect_local_cpu (int argc, const char **argv); +#define EXTRA_SPEC_FUNCTIONS \ + { "local_cpu_detect", host_detect_local_cpu }, +#define HAVE_LOCAL_CPU_DETECT +#endif + +#if TARGET_64BIT_DEFAULT +#define OPT_ARCH64 "!m32" +#define OPT_ARCH32 "m32" +#else +#define OPT_ARCH64 "m64" +#define OPT_ARCH32 "!m64" +#endif + +/* Support for configure-time defaults of some command line options. + The order here is important so that -march doesn't squash the + tune or cpu values. */ +#define OPTION_DEFAULT_SPECS \ + {"tune", "%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}" }, \ + {"tune_32", "%{" OPT_ARCH32 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ + {"tune_64", "%{" OPT_ARCH64 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ + {"cpu", "%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}" }, \ + {"cpu_32", "%{" OPT_ARCH32 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ + {"cpu_64", "%{" OPT_ARCH64 ":%{!mtune=*:%{!mcpu=*:%{!march=*:-mtune=%(VALUE)}}}}" }, \ + {"arch", "%{!march=*:-march=%(VALUE)}"}, \ + {"arch_32", "%{" OPT_ARCH32 ":%{!march=*:-march=%(VALUE)}}"}, \ + {"arch_64", "%{" OPT_ARCH64 ":%{!march=*:-march=%(VALUE)}}"}, + +/* Specs for the compiler proper */ + +#ifndef CC1_CPU_SPEC +#define CC1_CPU_SPEC_1 "" + +#ifndef HAVE_LOCAL_CPU_DETECT +#define CC1_CPU_SPEC CC1_CPU_SPEC_1 +#else +#define CC1_CPU_SPEC CC1_CPU_SPEC_1 \ +"%{march=native:%>march=native %:local_cpu_detect(arch) \ + %{!mtune=*:%>mtune=native %:local_cpu_detect(tune)}} \ +%{mtune=native:%>mtune=native %:local_cpu_detect(tune)}" +#endif +#endif + +/* Target CPU builtins. */ +#define TARGET_CPU_CPP_BUILTINS() ix86_target_macros () + +/* Target Pragmas. */ +#define REGISTER_TARGET_PRAGMAS() ix86_register_pragmas () + +enum target_cpu_default +{ + TARGET_CPU_DEFAULT_generic = 0, + + TARGET_CPU_DEFAULT_i386, + TARGET_CPU_DEFAULT_i486, + TARGET_CPU_DEFAULT_pentium, + TARGET_CPU_DEFAULT_pentium_mmx, + TARGET_CPU_DEFAULT_pentiumpro, + TARGET_CPU_DEFAULT_pentium2, + TARGET_CPU_DEFAULT_pentium3, + TARGET_CPU_DEFAULT_pentium4, + TARGET_CPU_DEFAULT_pentium_m, + TARGET_CPU_DEFAULT_prescott, + TARGET_CPU_DEFAULT_nocona, + TARGET_CPU_DEFAULT_core2, + TARGET_CPU_DEFAULT_corei7, + TARGET_CPU_DEFAULT_atom, + + TARGET_CPU_DEFAULT_geode, + TARGET_CPU_DEFAULT_k6, + TARGET_CPU_DEFAULT_k6_2, + TARGET_CPU_DEFAULT_k6_3, + TARGET_CPU_DEFAULT_athlon, + TARGET_CPU_DEFAULT_athlon_sse, + TARGET_CPU_DEFAULT_k8, + TARGET_CPU_DEFAULT_amdfam10, + TARGET_CPU_DEFAULT_bdver1, + TARGET_CPU_DEFAULT_btver1, + + TARGET_CPU_DEFAULT_max +}; + +#ifndef CC1_SPEC +#define CC1_SPEC "%(cc1_cpu) " +#endif + +/* This macro defines names of additional specifications to put in the + specs that can be used in various specifications like CC1_SPEC. Its + definition is an initializer with a subgrouping for each command option. + + Each subgrouping contains a string constant, that defines the + specification name, and a string constant that used by the GCC driver + program. + + Do not define this macro if it does not need to do anything. */ + +#ifndef SUBTARGET_EXTRA_SPECS +#define SUBTARGET_EXTRA_SPECS +#endif + +#define EXTRA_SPECS \ + { "cc1_cpu", CC1_CPU_SPEC }, \ + SUBTARGET_EXTRA_SPECS + + +/* Set the value of FLT_EVAL_METHOD in float.h. When using only the + FPU, assume that the fpcw is set to extended precision; when using + only SSE, rounding is correct; when using both SSE and the FPU, + the rounding precision is indeterminate, since either may be chosen + apparently at random. */ +#define TARGET_FLT_EVAL_METHOD \ + (TARGET_MIX_SSE_I387 ? -1 : TARGET_SSE_MATH ? 0 : 2) + +/* Whether to allow x87 floating-point arithmetic on MODE (one of + SFmode, DFmode and XFmode) in the current excess precision + configuration. */ +#define X87_ENABLE_ARITH(MODE) \ + (flag_excess_precision == EXCESS_PRECISION_FAST || (MODE) == XFmode) + +/* Likewise, whether to allow direct conversions from integer mode + IMODE (HImode, SImode or DImode) to MODE. */ +#define X87_ENABLE_FLOAT(MODE, IMODE) \ + (flag_excess_precision == EXCESS_PRECISION_FAST \ + || (MODE) == XFmode \ + || ((MODE) == DFmode && (IMODE) == SImode) \ + || (IMODE) == HImode) + +/* target machine storage layout */ + +#define SHORT_TYPE_SIZE 16 +#define INT_TYPE_SIZE 32 +#define LONG_LONG_TYPE_SIZE 64 +#define FLOAT_TYPE_SIZE 32 +#define DOUBLE_TYPE_SIZE 64 +#define LONG_DOUBLE_TYPE_SIZE 80 + +#define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE + +#if defined (TARGET_BI_ARCH) || TARGET_64BIT_DEFAULT +#define MAX_BITS_PER_WORD 64 +#else +#define MAX_BITS_PER_WORD 32 +#endif + +/* Define this if most significant byte of a word is the lowest numbered. */ +/* That is true on the 80386. */ + +#define BITS_BIG_ENDIAN 0 + +/* Define this if most significant byte of a word is the lowest numbered. */ +/* That is not true on the 80386. */ +#define BYTES_BIG_ENDIAN 0 + +/* Define this if most significant word of a multiword number is the lowest + numbered. */ +/* Not true for 80386 */ +#define WORDS_BIG_ENDIAN 0 + +/* Width of a word, in units (bytes). */ +#define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4) + +#ifndef IN_LIBGCC2 +#define MIN_UNITS_PER_WORD 4 +#endif + +/* Allocation boundary (in *bits*) for storing arguments in argument list. */ +#define PARM_BOUNDARY BITS_PER_WORD + +/* Boundary (in *bits*) on which stack pointer should be aligned. */ +#define STACK_BOUNDARY \ + (TARGET_64BIT && ix86_abi == MS_ABI ? 128 : BITS_PER_WORD) + +/* Stack boundary of the main function guaranteed by OS. */ +#define MAIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32) + +/* Minimum stack boundary. */ +#define MIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32) + +/* Boundary (in *bits*) on which the stack pointer prefers to be + aligned; the compiler cannot rely on having this alignment. */ +#define PREFERRED_STACK_BOUNDARY ix86_preferred_stack_boundary + +/* It should be MIN_STACK_BOUNDARY. But we set it to 128 bits for + both 32bit and 64bit, to support codes that need 128 bit stack + alignment for SSE instructions, but can't realign the stack. */ +#define PREFERRED_STACK_BOUNDARY_DEFAULT 128 + +/* 1 if -mstackrealign should be turned on by default. It will + generate an alternate prologue and epilogue that realigns the + runtime stack if nessary. This supports mixing codes that keep a + 4-byte aligned stack, as specified by i386 psABI, with codes that + need a 16-byte aligned stack, as required by SSE instructions. */ +#define STACK_REALIGN_DEFAULT 0 + +/* Boundary (in *bits*) on which the incoming stack is aligned. */ +#define INCOMING_STACK_BOUNDARY ix86_incoming_stack_boundary + +/* Target OS keeps a vector-aligned (128-bit, 16-byte) stack. This is + mandatory for the 64-bit ABI, and may or may not be true for other + operating systems. */ +#define TARGET_KEEPS_VECTOR_ALIGNED_STACK TARGET_64BIT + +/* Minimum allocation boundary for the code of a function. */ +#define FUNCTION_BOUNDARY 8 + +/* C++ stores the virtual bit in the lowest bit of function pointers. */ +#define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_pfn + +/* Minimum size in bits of the largest boundary to which any + and all fundamental data types supported by the hardware + might need to be aligned. No data type wants to be aligned + rounder than this. + + Pentium+ prefers DFmode values to be aligned to 64 bit boundary + and Pentium Pro XFmode values at 128 bit boundaries. */ + +#define BIGGEST_ALIGNMENT (TARGET_AVX ? 256 : 128) + +/* Maximum stack alignment. */ +#define MAX_STACK_ALIGNMENT MAX_OFILE_ALIGNMENT + +/* Alignment value for attribute ((aligned)). It is a constant since + it is the part of the ABI. We shouldn't change it with -mavx. */ +#define ATTRIBUTE_ALIGNED_VALUE 128 + +/* Decide whether a variable of mode MODE should be 128 bit aligned. */ +#define ALIGN_MODE_128(MODE) \ + ((MODE) == XFmode || SSE_REG_MODE_P (MODE)) + +/* The published ABIs say that doubles should be aligned on word + boundaries, so lower the alignment for structure fields unless + -malign-double is set. */ + +/* ??? Blah -- this macro is used directly by libobjc. Since it + supports no vector modes, cut out the complexity and fall back + on BIGGEST_FIELD_ALIGNMENT. */ +#ifdef IN_TARGET_LIBS +#ifdef __x86_64__ +#define BIGGEST_FIELD_ALIGNMENT 128 +#else +#define BIGGEST_FIELD_ALIGNMENT 32 +#endif +#else +#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ + x86_field_alignment (FIELD, COMPUTED) +#endif + +/* If defined, a C expression to compute the alignment given to a + constant that is being placed in memory. EXP is the constant + and ALIGN is the alignment that the object would ordinarily have. + The value of this macro is used instead of that alignment to align + the object. + + If this macro is not defined, then ALIGN is used. + + The typical use of this macro is to increase alignment for string + constants to be word aligned so that `strcpy' calls that copy + constants can be done inline. */ + +#define CONSTANT_ALIGNMENT(EXP, ALIGN) ix86_constant_alignment ((EXP), (ALIGN)) + +/* If defined, a C expression to compute the alignment for a static + variable. TYPE is the data type, and ALIGN is the alignment that + the object would ordinarily have. The value of this macro is used + instead of that alignment to align the object. + + If this macro is not defined, then ALIGN is used. + + One use of this macro is to increase alignment of medium-size + data to make it all fit in fewer cache lines. Another is to + cause character arrays to be word-aligned so that `strcpy' calls + that copy constants to character arrays can be done inline. */ + +#define DATA_ALIGNMENT(TYPE, ALIGN) ix86_data_alignment ((TYPE), (ALIGN)) + +/* If defined, a C expression to compute the alignment for a local + variable. TYPE is the data type, and ALIGN is the alignment that + the object would ordinarily have. The value of this macro is used + instead of that alignment to align the object. + + If this macro is not defined, then ALIGN is used. + + One use of this macro is to increase alignment of medium-size + data to make it all fit in fewer cache lines. */ + +#define LOCAL_ALIGNMENT(TYPE, ALIGN) \ + ix86_local_alignment ((TYPE), VOIDmode, (ALIGN)) + +/* If defined, a C expression to compute the alignment for stack slot. + TYPE is the data type, MODE is the widest mode available, and ALIGN + is the alignment that the slot would ordinarily have. The value of + this macro is used instead of that alignment to align the slot. + + If this macro is not defined, then ALIGN is used when TYPE is NULL, + Otherwise, LOCAL_ALIGNMENT will be used. + + One use of this macro is to set alignment of stack slot to the + maximum alignment of all possible modes which the slot may have. */ + +#define STACK_SLOT_ALIGNMENT(TYPE, MODE, ALIGN) \ + ix86_local_alignment ((TYPE), (MODE), (ALIGN)) + +/* If defined, a C expression to compute the alignment for a local + variable DECL. + + If this macro is not defined, then + LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL)) will be used. + + One use of this macro is to increase alignment of medium-size + data to make it all fit in fewer cache lines. */ + +#define LOCAL_DECL_ALIGNMENT(DECL) \ + ix86_local_alignment ((DECL), VOIDmode, DECL_ALIGN (DECL)) + +/* If defined, a C expression to compute the minimum required alignment + for dynamic stack realignment purposes for EXP (a TYPE or DECL), + MODE, assuming normal alignment ALIGN. + + If this macro is not defined, then (ALIGN) will be used. */ + +#define MINIMUM_ALIGNMENT(EXP, MODE, ALIGN) \ + ix86_minimum_alignment (EXP, MODE, ALIGN) + + +/* Set this nonzero if move instructions will actually fail to work + when given unaligned data. */ +#define STRICT_ALIGNMENT 0 + +/* If bit field type is int, don't let it cross an int, + and give entire struct the alignment of an int. */ +/* Required on the 386 since it doesn't have bit-field insns. */ +#define PCC_BITFIELD_TYPE_MATTERS 1 + +/* Standard register usage. */ + +/* This processor has special stack-like registers. See reg-stack.c + for details. */ + +#define STACK_REGS + +#define IS_STACK_MODE(MODE) \ + (((MODE) == SFmode && !(TARGET_SSE && TARGET_SSE_MATH)) \ + || ((MODE) == DFmode && !(TARGET_SSE2 && TARGET_SSE_MATH)) \ + || (MODE) == XFmode) + +/* Cover class containing the stack registers. */ +#define STACK_REG_COVER_CLASS FLOAT_REGS + +/* Number of actual hardware registers. + The hardware registers are assigned numbers for the compiler + from 0 to just below FIRST_PSEUDO_REGISTER. + All registers that the compiler knows about must be given numbers, + even those that are not normally considered general registers. + + In the 80386 we give the 8 general purpose registers the numbers 0-7. + We number the floating point registers 8-15. + Note that registers 0-7 can be accessed as a short or int, + while only 0-3 may be used with byte `mov' instructions. + + Reg 16 does not correspond to any hardware register, but instead + appears in the RTL as an argument pointer prior to reload, and is + eliminated during reloading in favor of either the stack or frame + pointer. */ + +#define FIRST_PSEUDO_REGISTER 53 + +/* Number of hardware registers that go into the DWARF-2 unwind info. + If not defined, equals FIRST_PSEUDO_REGISTER. */ + +#define DWARF_FRAME_REGISTERS 17 + +/* 1 for registers that have pervasive standard uses + and are not available for the register allocator. + On the 80386, the stack pointer is such, as is the arg pointer. + + The value is zero if the register is not fixed on either 32 or + 64 bit targets, one if the register if fixed on both 32 and 64 + bit targets, two if it is only fixed on 32bit targets and three + if its only fixed on 64bit targets. + Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE. + */ +#define FIXED_REGISTERS \ +/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \ +{ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, \ +/*arg,flags,fpsr,fpcr,frame*/ \ + 1, 1, 1, 1, 1, \ +/*xmm0,xmm1,xmm2,xmm3,xmm4,xmm5,xmm6,xmm7*/ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/* mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7*/ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/* r8, r9, r10, r11, r12, r13, r14, r15*/ \ + 2, 2, 2, 2, 2, 2, 2, 2, \ +/*xmm8,xmm9,xmm10,xmm11,xmm12,xmm13,xmm14,xmm15*/ \ + 2, 2, 2, 2, 2, 2, 2, 2 } + + +/* 1 for registers not available across function calls. + These must include the FIXED_REGISTERS and also any + registers that can be used without being saved. + The latter must include the registers where values are returned + and the register where structure-value addresses are passed. + Aside from that, you can include as many other registers as you like. + + The value is zero if the register is not call used on either 32 or + 64 bit targets, one if the register if call used on both 32 and 64 + bit targets, two if it is only call used on 32bit targets and three + if its only call used on 64bit targets. + Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE. +*/ +#define CALL_USED_REGISTERS \ +/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \ +{ 1, 1, 1, 0, 3, 3, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ +/*arg,flags,fpsr,fpcr,frame*/ \ + 1, 1, 1, 1, 1, \ +/*xmm0,xmm1,xmm2,xmm3,xmm4,xmm5,xmm6,xmm7*/ \ + 1, 1, 1, 1, 1, 1, 1, 1, \ +/* mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7*/ \ + 1, 1, 1, 1, 1, 1, 1, 1, \ +/* r8, r9, r10, r11, r12, r13, r14, r15*/ \ + 1, 1, 1, 1, 2, 2, 2, 2, \ +/*xmm8,xmm9,xmm10,xmm11,xmm12,xmm13,xmm14,xmm15*/ \ + 1, 1, 1, 1, 1, 1, 1, 1 } + +/* Order in which to allocate registers. Each register must be + listed once, even those in FIXED_REGISTERS. List frame pointer + late and fixed registers last. Note that, in general, we prefer + registers listed in CALL_USED_REGISTERS, keeping the others + available for storage of persistent values. + + The ADJUST_REG_ALLOC_ORDER actually overwrite the order, + so this is just empty initializer for array. */ + +#define REG_ALLOC_ORDER \ +{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,\ + 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, \ + 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ + 48, 49, 50, 51, 52 } + +/* ADJUST_REG_ALLOC_ORDER is a macro which permits reg_alloc_order + to be rearranged based on a particular function. When using sse math, + we want to allocate SSE before x87 registers and vice versa. */ + +#define ADJUST_REG_ALLOC_ORDER x86_order_regs_for_local_alloc () + + +#define OVERRIDE_ABI_FORMAT(FNDECL) ix86_call_abi_override (FNDECL) + +/* Return number of consecutive hard regs needed starting at reg REGNO + to hold something of mode MODE. + This is ordinarily the length in words of a value of mode MODE + but can be less for certain modes in special long registers. + + Actually there are no two word move instructions for consecutive + registers. And only registers 0-3 may have mov byte instructions + applied to them. */ + +#define HARD_REGNO_NREGS(REGNO, MODE) \ + (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO) \ + ? (COMPLEX_MODE_P (MODE) ? 2 : 1) \ + : ((MODE) == XFmode \ + ? (TARGET_64BIT ? 2 : 3) \ + : (MODE) == XCmode \ + ? (TARGET_64BIT ? 4 : 6) \ + : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))) + +#define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) \ + ((TARGET_128BIT_LONG_DOUBLE && !TARGET_64BIT) \ + ? (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO) \ + ? 0 \ + : ((MODE) == XFmode || (MODE) == XCmode)) \ + : 0) + +#define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) ((MODE) == XFmode ? 4 : 8) + +#define VALID_AVX256_REG_MODE(MODE) \ + ((MODE) == V32QImode || (MODE) == V16HImode || (MODE) == V8SImode \ + || (MODE) == V4DImode || (MODE) == V8SFmode || (MODE) == V4DFmode) + +#define VALID_SSE2_REG_MODE(MODE) \ + ((MODE) == V16QImode || (MODE) == V8HImode || (MODE) == V2DFmode \ + || (MODE) == V2DImode || (MODE) == DFmode) + +#define VALID_SSE_REG_MODE(MODE) \ + ((MODE) == V1TImode || (MODE) == TImode \ + || (MODE) == V4SFmode || (MODE) == V4SImode \ + || (MODE) == SFmode || (MODE) == TFmode) + +#define VALID_MMX_REG_MODE_3DNOW(MODE) \ + ((MODE) == V2SFmode || (MODE) == SFmode) + +#define VALID_MMX_REG_MODE(MODE) \ + ((MODE == V1DImode) || (MODE) == DImode \ + || (MODE) == V2SImode || (MODE) == SImode \ + || (MODE) == V4HImode || (MODE) == V8QImode) + +#define VALID_DFP_MODE_P(MODE) \ + ((MODE) == SDmode || (MODE) == DDmode || (MODE) == TDmode) + +#define VALID_FP_MODE_P(MODE) \ + ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode \ + || (MODE) == SCmode || (MODE) == DCmode || (MODE) == XCmode) \ + +#define VALID_INT_MODE_P(MODE) \ + ((MODE) == QImode || (MODE) == HImode || (MODE) == SImode \ + || (MODE) == DImode \ + || (MODE) == CQImode || (MODE) == CHImode || (MODE) == CSImode \ + || (MODE) == CDImode \ + || (TARGET_64BIT && ((MODE) == TImode || (MODE) == CTImode \ + || (MODE) == TFmode || (MODE) == TCmode))) + +/* Return true for modes passed in SSE registers. */ +#define SSE_REG_MODE_P(MODE) \ + ((MODE) == V1TImode || (MODE) == TImode || (MODE) == V16QImode \ + || (MODE) == TFmode || (MODE) == V8HImode || (MODE) == V2DFmode \ + || (MODE) == V2DImode || (MODE) == V4SFmode || (MODE) == V4SImode \ + || (MODE) == V32QImode || (MODE) == V16HImode || (MODE) == V8SImode \ + || (MODE) == V4DImode || (MODE) == V8SFmode || (MODE) == V4DFmode) + +/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */ + +#define HARD_REGNO_MODE_OK(REGNO, MODE) \ + ix86_hard_regno_mode_ok ((REGNO), (MODE)) + +/* Value is 1 if it is a good idea to tie two pseudo registers + when one has mode MODE1 and one has mode MODE2. + If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, + for any hard reg, then this must be 0 for correct output. */ + +#define MODES_TIEABLE_P(MODE1, MODE2) ix86_modes_tieable_p (MODE1, MODE2) + +/* It is possible to write patterns to move flags; but until someone + does it, */ +#define AVOID_CCMODE_COPIES + +/* Specify the modes required to caller save a given hard regno. + We do this on i386 to prevent flags from being saved at all. + + Kill any attempts to combine saving of modes. */ + +#define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ + (CC_REGNO_P (REGNO) ? VOIDmode \ + : (MODE) == VOIDmode && (NREGS) != 1 ? VOIDmode \ + : (MODE) == VOIDmode ? choose_hard_reg_mode ((REGNO), (NREGS), false) \ + : (MODE) == HImode && !TARGET_PARTIAL_REG_STALL ? SImode \ + : (MODE) == QImode && (REGNO) > BX_REG && !TARGET_64BIT ? SImode \ + : (MODE)) + +/* The only ABI that saves SSE registers across calls is Win64 (thus no + need to check the current ABI here), and with AVX enabled Win64 only + guarantees that the low 16 bytes are saved. */ +#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) \ + (SSE_REGNO_P (REGNO) && GET_MODE_SIZE (MODE) > 16) + +/* Specify the registers used for certain standard purposes. + The values of these macros are register numbers. */ + +/* on the 386 the pc register is %eip, and is not usable as a general + register. The ordinary mov instructions won't work */ +/* #define PC_REGNUM */ + +/* Register to use for pushing function arguments. */ +#define STACK_POINTER_REGNUM 7 + +/* Base register for access to local variables of the function. */ +#define HARD_FRAME_POINTER_REGNUM 6 + +/* Base register for access to local variables of the function. */ +#define FRAME_POINTER_REGNUM 20 + +/* First floating point reg */ +#define FIRST_FLOAT_REG 8 + +/* First & last stack-like regs */ +#define FIRST_STACK_REG FIRST_FLOAT_REG +#define LAST_STACK_REG (FIRST_FLOAT_REG + 7) + +#define FIRST_SSE_REG (FRAME_POINTER_REGNUM + 1) +#define LAST_SSE_REG (FIRST_SSE_REG + 7) + +#define FIRST_MMX_REG (LAST_SSE_REG + 1) +#define LAST_MMX_REG (FIRST_MMX_REG + 7) + +#define FIRST_REX_INT_REG (LAST_MMX_REG + 1) +#define LAST_REX_INT_REG (FIRST_REX_INT_REG + 7) + +#define FIRST_REX_SSE_REG (LAST_REX_INT_REG + 1) +#define LAST_REX_SSE_REG (FIRST_REX_SSE_REG + 7) + +/* Override this in other tm.h files to cope with various OS lossage + requiring a frame pointer. */ +#ifndef SUBTARGET_FRAME_POINTER_REQUIRED +#define SUBTARGET_FRAME_POINTER_REQUIRED 0 +#endif + +/* Make sure we can access arbitrary call frames. */ +#define SETUP_FRAME_ADDRESSES() ix86_setup_frame_addresses () + +/* Base register for access to arguments of the function. */ +#define ARG_POINTER_REGNUM 16 + +/* Register to hold the addressing base for position independent + code access to data items. We don't use PIC pointer for 64bit + mode. Define the regnum to dummy value to prevent gcc from + pessimizing code dealing with EBX. + + To avoid clobbering a call-saved register unnecessarily, we renumber + the pic register when possible. The change is visible after the + prologue has been emitted. */ + +#define REAL_PIC_OFFSET_TABLE_REGNUM BX_REG + +#define PIC_OFFSET_TABLE_REGNUM \ + ((TARGET_64BIT && ix86_cmodel == CM_SMALL_PIC) \ + || !flag_pic ? INVALID_REGNUM \ + : reload_completed ? REGNO (pic_offset_table_rtx) \ + : REAL_PIC_OFFSET_TABLE_REGNUM) + +#define GOT_SYMBOL_NAME "_GLOBAL_OFFSET_TABLE_" + +/* This is overridden by <cygwin.h>. */ +#define MS_AGGREGATE_RETURN 0 + +/* This is overridden by <netware.h>. */ +#define KEEP_AGGREGATE_RETURN_POINTER 0 + +/* Define the classes of registers for register constraints in the + machine description. Also define ranges of constants. + + One of the classes must always be named ALL_REGS and include all hard regs. + If there is more than one class, another class must be named NO_REGS + and contain no registers. + + The name GENERAL_REGS must be the name of a class (or an alias for + another name such as ALL_REGS). This is the class of registers + that is allowed by "g" or "r" in a register constraint. + Also, registers outside this class are allocated only when + instructions express preferences for them. + + The classes must be numbered in nondecreasing order; that is, + a larger-numbered class must never be contained completely + in a smaller-numbered class. + + For any two classes, it is very desirable that there be another + class that represents their union. + + It might seem that class BREG is unnecessary, since no useful 386 + opcode needs reg %ebx. But some systems pass args to the OS in ebx, + and the "b" register constraint is useful in asms for syscalls. + + The flags, fpsr and fpcr registers are in no class. */ + +enum reg_class +{ + NO_REGS, + AREG, DREG, CREG, BREG, SIREG, DIREG, + AD_REGS, /* %eax/%edx for DImode */ + CLOBBERED_REGS, /* call-clobbered integers */ + Q_REGS, /* %eax %ebx %ecx %edx */ + NON_Q_REGS, /* %esi %edi %ebp %esp */ + INDEX_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp */ + LEGACY_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp %esp */ + GENERAL_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp %esp + %r8 %r9 %r10 %r11 %r12 %r13 %r14 %r15 */ + FP_TOP_REG, FP_SECOND_REG, /* %st(0) %st(1) */ + FLOAT_REGS, + SSE_FIRST_REG, + SSE_REGS, + MMX_REGS, + FP_TOP_SSE_REGS, + FP_SECOND_SSE_REGS, + FLOAT_SSE_REGS, + FLOAT_INT_REGS, + INT_SSE_REGS, + FLOAT_INT_SSE_REGS, + ALL_REGS, LIM_REG_CLASSES +}; + +#define N_REG_CLASSES ((int) LIM_REG_CLASSES) + +#define INTEGER_CLASS_P(CLASS) \ + reg_class_subset_p ((CLASS), GENERAL_REGS) +#define FLOAT_CLASS_P(CLASS) \ + reg_class_subset_p ((CLASS), FLOAT_REGS) +#define SSE_CLASS_P(CLASS) \ + reg_class_subset_p ((CLASS), SSE_REGS) +#define MMX_CLASS_P(CLASS) \ + ((CLASS) == MMX_REGS) +#define MAYBE_INTEGER_CLASS_P(CLASS) \ + reg_classes_intersect_p ((CLASS), GENERAL_REGS) +#define MAYBE_FLOAT_CLASS_P(CLASS) \ + reg_classes_intersect_p ((CLASS), FLOAT_REGS) +#define MAYBE_SSE_CLASS_P(CLASS) \ + reg_classes_intersect_p (SSE_REGS, (CLASS)) +#define MAYBE_MMX_CLASS_P(CLASS) \ + reg_classes_intersect_p (MMX_REGS, (CLASS)) + +#define Q_CLASS_P(CLASS) \ + reg_class_subset_p ((CLASS), Q_REGS) + +/* Give names of register classes as strings for dump file. */ + +#define REG_CLASS_NAMES \ +{ "NO_REGS", \ + "AREG", "DREG", "CREG", "BREG", \ + "SIREG", "DIREG", \ + "AD_REGS", \ + "CLOBBERED_REGS", \ + "Q_REGS", "NON_Q_REGS", \ + "INDEX_REGS", \ + "LEGACY_REGS", \ + "GENERAL_REGS", \ + "FP_TOP_REG", "FP_SECOND_REG", \ + "FLOAT_REGS", \ + "SSE_FIRST_REG", \ + "SSE_REGS", \ + "MMX_REGS", \ + "FP_TOP_SSE_REGS", \ + "FP_SECOND_SSE_REGS", \ + "FLOAT_SSE_REGS", \ + "FLOAT_INT_REGS", \ + "INT_SSE_REGS", \ + "FLOAT_INT_SSE_REGS", \ + "ALL_REGS" } + +/* Define which registers fit in which classes. This is an initializer + for a vector of HARD_REG_SET of length N_REG_CLASSES. + + Note that the default setting of CLOBBERED_REGS is for 32-bit; this + is adjusted by TARGET_CONDITIONAL_REGISTER_USAGE for the 64-bit ABI + in effect. */ + +#define REG_CLASS_CONTENTS \ +{ { 0x00, 0x0 }, \ + { 0x01, 0x0 }, { 0x02, 0x0 }, /* AREG, DREG */ \ + { 0x04, 0x0 }, { 0x08, 0x0 }, /* CREG, BREG */ \ + { 0x10, 0x0 }, { 0x20, 0x0 }, /* SIREG, DIREG */ \ + { 0x03, 0x0 }, /* AD_REGS */ \ + { 0x07, 0x0 }, /* CLOBBERED_REGS */ \ + { 0x0f, 0x0 }, /* Q_REGS */ \ + { 0x1100f0, 0x1fe0 }, /* NON_Q_REGS */ \ + { 0x7f, 0x1fe0 }, /* INDEX_REGS */ \ + { 0x1100ff, 0x0 }, /* LEGACY_REGS */ \ + { 0x1100ff, 0x1fe0 }, /* GENERAL_REGS */ \ + { 0x100, 0x0 }, { 0x0200, 0x0 },/* FP_TOP_REG, FP_SECOND_REG */\ + { 0xff00, 0x0 }, /* FLOAT_REGS */ \ + { 0x200000, 0x0 }, /* SSE_FIRST_REG */ \ +{ 0x1fe00000,0x1fe000 }, /* SSE_REGS */ \ +{ 0xe0000000, 0x1f }, /* MMX_REGS */ \ +{ 0x1fe00100,0x1fe000 }, /* FP_TOP_SSE_REG */ \ +{ 0x1fe00200,0x1fe000 }, /* FP_SECOND_SSE_REG */ \ +{ 0x1fe0ff00,0x1fe000 }, /* FLOAT_SSE_REGS */ \ + { 0x1ffff, 0x1fe0 }, /* FLOAT_INT_REGS */ \ +{ 0x1fe100ff,0x1fffe0 }, /* INT_SSE_REGS */ \ +{ 0x1fe1ffff,0x1fffe0 }, /* FLOAT_INT_SSE_REGS */ \ +{ 0xffffffff,0x1fffff } \ +} + +/* The same information, inverted: + Return the class number of the smallest class containing + reg number REGNO. This could be a conditional expression + or could index an array. */ + +#define REGNO_REG_CLASS(REGNO) (regclass_map[REGNO]) + +/* When this hook returns true for MODE, the compiler allows + registers explicitly used in the rtl to be used as spill registers + but prevents the compiler from extending the lifetime of these + registers. */ +#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true + +#define QI_REG_P(X) (REG_P (X) && REGNO (X) <= BX_REG) + +#define GENERAL_REGNO_P(N) \ + ((N) <= STACK_POINTER_REGNUM || REX_INT_REGNO_P (N)) + +#define GENERAL_REG_P(X) \ + (REG_P (X) && GENERAL_REGNO_P (REGNO (X))) + +#define ANY_QI_REG_P(X) (TARGET_64BIT ? GENERAL_REG_P(X) : QI_REG_P (X)) + +#define REX_INT_REGNO_P(N) \ + IN_RANGE ((N), FIRST_REX_INT_REG, LAST_REX_INT_REG) +#define REX_INT_REG_P(X) (REG_P (X) && REX_INT_REGNO_P (REGNO (X))) + +#define FP_REG_P(X) (REG_P (X) && FP_REGNO_P (REGNO (X))) +#define FP_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG) +#define ANY_FP_REG_P(X) (REG_P (X) && ANY_FP_REGNO_P (REGNO (X))) +#define ANY_FP_REGNO_P(N) (FP_REGNO_P (N) || SSE_REGNO_P (N)) + +#define X87_FLOAT_MODE_P(MODE) \ + (TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) + +#define SSE_REG_P(N) (REG_P (N) && SSE_REGNO_P (REGNO (N))) +#define SSE_REGNO_P(N) \ + (IN_RANGE ((N), FIRST_SSE_REG, LAST_SSE_REG) \ + || REX_SSE_REGNO_P (N)) + +#define REX_SSE_REGNO_P(N) \ + IN_RANGE ((N), FIRST_REX_SSE_REG, LAST_REX_SSE_REG) + +#define SSE_REGNO(N) \ + ((N) < 8 ? FIRST_SSE_REG + (N) : FIRST_REX_SSE_REG + (N) - 8) + +#define SSE_FLOAT_MODE_P(MODE) \ + ((TARGET_SSE && (MODE) == SFmode) || (TARGET_SSE2 && (MODE) == DFmode)) + +#define SSE_VEC_FLOAT_MODE_P(MODE) \ + ((TARGET_SSE && (MODE) == V4SFmode) || (TARGET_SSE2 && (MODE) == V2DFmode)) + +#define AVX_FLOAT_MODE_P(MODE) \ + (TARGET_AVX && ((MODE) == SFmode || (MODE) == DFmode)) + +#define AVX128_VEC_FLOAT_MODE_P(MODE) \ + (TARGET_AVX && ((MODE) == V4SFmode || (MODE) == V2DFmode)) + +#define AVX256_VEC_FLOAT_MODE_P(MODE) \ + (TARGET_AVX && ((MODE) == V8SFmode || (MODE) == V4DFmode)) + +#define AVX_VEC_FLOAT_MODE_P(MODE) \ + (TARGET_AVX && ((MODE) == V4SFmode || (MODE) == V2DFmode \ + || (MODE) == V8SFmode || (MODE) == V4DFmode)) + +#define FMA4_VEC_FLOAT_MODE_P(MODE) \ + (TARGET_FMA4 && ((MODE) == V4SFmode || (MODE) == V2DFmode \ + || (MODE) == V8SFmode || (MODE) == V4DFmode)) + +#define MMX_REG_P(XOP) (REG_P (XOP) && MMX_REGNO_P (REGNO (XOP))) +#define MMX_REGNO_P(N) IN_RANGE ((N), FIRST_MMX_REG, LAST_MMX_REG) + +#define STACK_REG_P(XOP) (REG_P (XOP) && STACK_REGNO_P (REGNO (XOP))) +#define STACK_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG) + +#define STACK_TOP_P(XOP) (REG_P (XOP) && REGNO (XOP) == FIRST_STACK_REG) + +#define CC_REG_P(X) (REG_P (X) && CC_REGNO_P (REGNO (X))) +#define CC_REGNO_P(X) ((X) == FLAGS_REG || (X) == FPSR_REG) + +/* The class value for index registers, and the one for base regs. */ + +#define INDEX_REG_CLASS INDEX_REGS +#define BASE_REG_CLASS GENERAL_REGS + +/* Place additional restrictions on the register class to use when it + is necessary to be able to hold a value of mode MODE in a reload + register for which class CLASS would ordinarily be used. */ + +#define LIMIT_RELOAD_CLASS(MODE, CLASS) \ + ((MODE) == QImode && !TARGET_64BIT \ + && ((CLASS) == ALL_REGS || (CLASS) == GENERAL_REGS \ + || (CLASS) == LEGACY_REGS || (CLASS) == INDEX_REGS) \ + ? Q_REGS : (CLASS)) + +/* If we are copying between general and FP registers, we need a memory + location. The same is true for SSE and MMX registers. */ +#define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ + ix86_secondary_memory_needed ((CLASS1), (CLASS2), (MODE), 1) + +/* Get_secondary_mem widens integral modes to BITS_PER_WORD. + There is no need to emit full 64 bit move on 64 bit targets + for integral modes that can be moved using 32 bit move. */ +#define SECONDARY_MEMORY_NEEDED_MODE(MODE) \ + (GET_MODE_BITSIZE (MODE) < 32 && INTEGRAL_MODE_P (MODE) \ + ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \ + : MODE) + +/* Return the maximum number of consecutive registers + needed to represent mode MODE in a register of class CLASS. */ +/* On the 80386, this is the size of MODE in words, + except in the FP regs, where a single reg is always enough. */ +#define CLASS_MAX_NREGS(CLASS, MODE) \ + (MAYBE_INTEGER_CLASS_P (CLASS) \ + ? ((MODE) == XFmode \ + ? (TARGET_64BIT ? 2 : 3) \ + : (MODE) == XCmode \ + ? (TARGET_64BIT ? 4 : 6) \ + : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) \ + : (COMPLEX_MODE_P (MODE) ? 2 : 1)) + +/* Return a class of registers that cannot change FROM mode to TO mode. */ + +#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ + ix86_cannot_change_mode_class (FROM, TO, CLASS) + +/* Stack layout; function entry, exit and calling. */ + +/* Define this if pushing a word on the stack + makes the stack pointer a smaller address. */ +#define STACK_GROWS_DOWNWARD + +/* Define this to nonzero if the nominal address of the stack frame + is at the high-address end of the local variables; + that is, each additional local variable allocated + goes at a more negative offset in the frame. */ +#define FRAME_GROWS_DOWNWARD 1 + +/* Offset within stack frame to start allocating local variables at. + If FRAME_GROWS_DOWNWARD, this is the offset to the END of the + first local allocated. Otherwise, it is the offset to the BEGINNING + of the first local allocated. */ +#define STARTING_FRAME_OFFSET 0 + +/* If we generate an insn to push BYTES bytes, this says how many the stack + pointer really advances by. On 386, we have pushw instruction that + decrements by exactly 2 no matter what the position was, there is no pushb. + + But as CIE data alignment factor on this arch is -4 for 32bit targets + and -8 for 64bit targets, we need to make sure all stack pointer adjustments + are in multiple of 4 for 32bit targets and 8 for 64bit targets. */ + +#define PUSH_ROUNDING(BYTES) \ + (((BYTES) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD) + +/* If defined, the maximum amount of space required for outgoing arguments + will be computed and placed into the variable `crtl->outgoing_args_size'. + No space will be pushed onto the stack for each call; instead, the + function prologue should increase the stack frame size by this amount. + + MS ABI seem to require 16 byte alignment everywhere except for function + prologue and apilogue. This is not possible without + ACCUMULATE_OUTGOING_ARGS. */ + +#define ACCUMULATE_OUTGOING_ARGS \ + (TARGET_ACCUMULATE_OUTGOING_ARGS || ix86_cfun_abi () == MS_ABI) + +/* If defined, a C expression whose value is nonzero when we want to use PUSH + instructions to pass outgoing arguments. */ + +#define PUSH_ARGS (TARGET_PUSH_ARGS && !ACCUMULATE_OUTGOING_ARGS) + +/* We want the stack and args grow in opposite directions, even if + PUSH_ARGS is 0. */ +#define PUSH_ARGS_REVERSED 1 + +/* Offset of first parameter from the argument pointer register value. */ +#define FIRST_PARM_OFFSET(FNDECL) 0 + +/* Define this macro if functions should assume that stack space has been + allocated for arguments even when their values are passed in registers. + + The value of this macro is the size, in bytes, of the area reserved for + arguments passed in registers for the function represented by FNDECL. + + This space can be allocated by the caller, or be a part of the + machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE' says + which. */ +#define REG_PARM_STACK_SPACE(FNDECL) ix86_reg_parm_stack_space (FNDECL) + +#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) \ + (ix86_function_type_abi (FNTYPE) == MS_ABI) + +/* Define how to find the value returned by a library function + assuming the value has mode MODE. */ + +#define LIBCALL_VALUE(MODE) ix86_libcall_value (MODE) + +/* Define the size of the result block used for communication between + untyped_call and untyped_return. The block contains a DImode value + followed by the block used by fnsave and frstor. */ + +#define APPLY_RESULT_SIZE (8+108) + +/* 1 if N is a possible register number for function argument passing. */ +#define FUNCTION_ARG_REGNO_P(N) ix86_function_arg_regno_p (N) + +/* Define a data type for recording info about an argument list + during the scan of that argument list. This data type should + hold all necessary information about the function itself + and about the args processed so far, enough to enable macros + such as FUNCTION_ARG to determine where the next arg should go. */ + +typedef struct ix86_args { + int words; /* # words passed so far */ + int nregs; /* # registers available for passing */ + int regno; /* next available register number */ + int fastcall; /* fastcall or thiscall calling convention + is used */ + int sse_words; /* # sse words passed so far */ + int sse_nregs; /* # sse registers available for passing */ + int warn_avx; /* True when we want to warn about AVX ABI. */ + int warn_sse; /* True when we want to warn about SSE ABI. */ + int warn_mmx; /* True when we want to warn about MMX ABI. */ + int sse_regno; /* next available sse register number */ + int mmx_words; /* # mmx words passed so far */ + int mmx_nregs; /* # mmx registers available for passing */ + int mmx_regno; /* next available mmx register number */ + int maybe_vaarg; /* true for calls to possibly vardic fncts. */ + int caller; /* true if it is caller. */ + int float_in_sse; /* Set to 1 or 2 for 32bit targets if + SFmode/DFmode arguments should be passed + in SSE registers. Otherwise 0. */ + enum calling_abi call_abi; /* Set to SYSV_ABI for sysv abi. Otherwise + MS_ABI for ms abi. */ +} CUMULATIVE_ARGS; + +/* Initialize a variable CUM of type CUMULATIVE_ARGS + for a call to a function whose data type is FNTYPE. + For a library call, FNTYPE is 0. */ + +#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ + init_cumulative_args (&(CUM), (FNTYPE), (LIBNAME), (FNDECL), \ + (N_NAMED_ARGS) != -1) + +/* Output assembler code to FILE to increment profiler label # LABELNO + for profiling a function entry. */ + +#define FUNCTION_PROFILER(FILE, LABELNO) x86_function_profiler (FILE, LABELNO) + +#define MCOUNT_NAME "_mcount" + +#define MCOUNT_NAME_BEFORE_PROLOGUE "__fentry__" + +#define PROFILE_COUNT_REGISTER "edx" + +/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, + the stack pointer does not matter. The value is tested only in + functions that have frame pointers. + No definition is equivalent to always zero. */ +/* Note on the 386 it might be more efficient not to define this since + we have to restore it ourselves from the frame pointer, in order to + use pop */ + +#define EXIT_IGNORE_STACK 1 + +/* Output assembler code for a block containing the constant parts + of a trampoline, leaving space for the variable parts. */ + +/* On the 386, the trampoline contains two instructions: + mov #STATIC,ecx + jmp FUNCTION + The trampoline is generated entirely at runtime. The operand of JMP + is the address of FUNCTION relative to the instruction following the + JMP (which is 5 bytes long). */ + +/* Length in units of the trampoline for entering a nested function. */ + +#define TRAMPOLINE_SIZE (TARGET_64BIT ? 24 : 10) + +/* Definitions for register eliminations. + + This is an array of structures. Each structure initializes one pair + of eliminable registers. The "from" register number is given first, + followed by "to". Eliminations of the same "from" register are listed + in order of preference. + + There are two registers that can always be eliminated on the i386. + The frame pointer and the arg pointer can be replaced by either the + hard frame pointer or to the stack pointer, depending upon the + circumstances. The hard frame pointer is not used before reload and + so it is not eligible for elimination. */ + +#define ELIMINABLE_REGS \ +{{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} \ + +/* Define the offset between two registers, one to be eliminated, and the other + its replacement, at the start of a routine. */ + +#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ + ((OFFSET) = ix86_initial_elimination_offset ((FROM), (TO))) + +/* Addressing modes, and classification of registers for them. */ + +/* Macros to check register numbers against specific register classes. */ + +/* These assume that REGNO is a hard or pseudo reg number. + They give nonzero only if REGNO is a hard reg of the suitable class + or a pseudo reg currently allocated to a suitable hard reg. + Since they use reg_renumber, they are safe only once reg_renumber + has been allocated, which happens in local-alloc.c. */ + +#define REGNO_OK_FOR_INDEX_P(REGNO) \ + ((REGNO) < STACK_POINTER_REGNUM \ + || REX_INT_REGNO_P (REGNO) \ + || (unsigned) reg_renumber[(REGNO)] < STACK_POINTER_REGNUM \ + || REX_INT_REGNO_P ((unsigned) reg_renumber[(REGNO)])) + +#define REGNO_OK_FOR_BASE_P(REGNO) \ + (GENERAL_REGNO_P (REGNO) \ + || (REGNO) == ARG_POINTER_REGNUM \ + || (REGNO) == FRAME_POINTER_REGNUM \ + || GENERAL_REGNO_P ((unsigned) reg_renumber[(REGNO)])) + +/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx + and check its validity for a certain class. + We have two alternate definitions for each of them. + The usual definition accepts all pseudo regs; the other rejects + them unless they have been allocated suitable hard regs. + The symbol REG_OK_STRICT causes the latter definition to be used. + + Most source files want to accept pseudo regs in the hope that + they will get allocated to the class that the insn wants them to be in. + Source files for reload pass need to be strict. + After reload, it makes no difference, since pseudo regs have + been eliminated by then. */ + + +/* Non strict versions, pseudos are ok. */ +#define REG_OK_FOR_INDEX_NONSTRICT_P(X) \ + (REGNO (X) < STACK_POINTER_REGNUM \ + || REX_INT_REGNO_P (REGNO (X)) \ + || REGNO (X) >= FIRST_PSEUDO_REGISTER) + +#define REG_OK_FOR_BASE_NONSTRICT_P(X) \ + (GENERAL_REGNO_P (REGNO (X)) \ + || REGNO (X) == ARG_POINTER_REGNUM \ + || REGNO (X) == FRAME_POINTER_REGNUM \ + || REGNO (X) >= FIRST_PSEUDO_REGISTER) + +/* Strict versions, hard registers only */ +#define REG_OK_FOR_INDEX_STRICT_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) +#define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) + +#ifndef REG_OK_STRICT +#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_NONSTRICT_P (X) +#define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NONSTRICT_P (X) + +#else +#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_STRICT_P (X) +#define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X) +#endif + +/* TARGET_LEGITIMATE_ADDRESS_P recognizes an RTL expression + that is a valid memory address for an instruction. + The MODE argument is the machine mode for the MEM expression + that wants to use this address. + + The other macros defined here are used only in TARGET_LEGITIMATE_ADDRESS_P, + except for CONSTANT_ADDRESS_P which is usually machine-independent. + + See legitimize_pic_address in i386.c for details as to what + constitutes a legitimate address when -fpic is used. */ + +#define MAX_REGS_PER_ADDRESS 2 + +#define CONSTANT_ADDRESS_P(X) constant_address_p (X) + +/* Nonzero if the constant value X is a legitimate general operand. + It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ + +#define LEGITIMATE_CONSTANT_P(X) legitimate_constant_p (X) + +/* If defined, a C expression to determine the base term of address X. + This macro is used in only one place: `find_base_term' in alias.c. + + It is always safe for this macro to not be defined. It exists so + that alias analysis can understand machine-dependent addresses. + + The typical use of this macro is to handle addresses containing + a label_ref or symbol_ref within an UNSPEC. */ + +#define FIND_BASE_TERM(X) ix86_find_base_term (X) + +/* Nonzero if the constant value X is a legitimate general operand + when generating PIC code. It is given that flag_pic is on and + that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ + +#define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X) + +#define SYMBOLIC_CONST(X) \ + (GET_CODE (X) == SYMBOL_REF \ + || GET_CODE (X) == LABEL_REF \ + || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X))) + +/* Max number of args passed in registers. If this is more than 3, we will + have problems with ebx (register #4), since it is a caller save register and + is also used as the pic register in ELF. So for now, don't allow more than + 3 registers to be passed in registers. */ + +/* Abi specific values for REGPARM_MAX and SSE_REGPARM_MAX */ +#define X86_64_REGPARM_MAX 6 +#define X86_64_MS_REGPARM_MAX 4 + +#define X86_32_REGPARM_MAX 3 + +#define REGPARM_MAX \ + (TARGET_64BIT \ + ? (TARGET_64BIT_MS_ABI \ + ? X86_64_MS_REGPARM_MAX \ + : X86_64_REGPARM_MAX) \ + : X86_32_REGPARM_MAX) + +#define X86_64_SSE_REGPARM_MAX 8 +#define X86_64_MS_SSE_REGPARM_MAX 4 + +#define X86_32_SSE_REGPARM_MAX (TARGET_SSE ? (TARGET_MACHO ? 4 : 3) : 0) + +#define SSE_REGPARM_MAX \ + (TARGET_64BIT \ + ? (TARGET_64BIT_MS_ABI \ + ? X86_64_MS_SSE_REGPARM_MAX \ + : X86_64_SSE_REGPARM_MAX) \ + : X86_32_SSE_REGPARM_MAX) + +#define MMX_REGPARM_MAX (TARGET_64BIT ? 0 : (TARGET_MMX ? 3 : 0)) + +/* Specify the machine mode that this machine uses + for the index in the tablejump instruction. */ +#define CASE_VECTOR_MODE \ + (!TARGET_64BIT || (flag_pic && ix86_cmodel != CM_LARGE_PIC) ? SImode : DImode) + +/* Define this as 1 if `char' should by default be signed; else as 0. */ +#define DEFAULT_SIGNED_CHAR 1 + +/* Max number of bytes we can move from memory to memory + in one reasonably fast instruction. */ +#define MOVE_MAX 16 + +/* MOVE_MAX_PIECES is the number of bytes at a time which we can + move efficiently, as opposed to MOVE_MAX which is the maximum + number of bytes we can move with a single instruction. */ +#define MOVE_MAX_PIECES UNITS_PER_WORD + +/* If a memory-to-memory move would take MOVE_RATIO or more simple + move-instruction pairs, we will do a movmem or libcall instead. + Increasing the value will always make code faster, but eventually + incurs high cost in increased code size. + + If you don't define this, a reasonable default is used. */ + +#define MOVE_RATIO(speed) ((speed) ? ix86_cost->move_ratio : 3) + +/* If a clear memory operation would take CLEAR_RATIO or more simple + move-instruction sequences, we will do a clrmem or libcall instead. */ + +#define CLEAR_RATIO(speed) ((speed) ? MIN (6, ix86_cost->move_ratio) : 2) + +/* Define if shifts truncate the shift count which implies one can + omit a sign-extension or zero-extension of a shift count. + + On i386, shifts do truncate the count. But bit test instructions + take the modulo of the bit offset operand. */ + +/* #define SHIFT_COUNT_TRUNCATED */ + +/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits + is done just by pretending it is already truncated. */ +#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 + +/* A macro to update M and UNSIGNEDP when an object whose type is + TYPE and which has the specified mode and signedness is to be + stored in a register. This macro is only called when TYPE is a + scalar type. + + On i386 it is sometimes useful to promote HImode and QImode + quantities to SImode. The choice depends on target type. */ + +#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ +do { \ + if (((MODE) == HImode && TARGET_PROMOTE_HI_REGS) \ + || ((MODE) == QImode && TARGET_PROMOTE_QI_REGS)) \ + (MODE) = SImode; \ +} while (0) + +/* Specify the machine mode that pointers have. + After generation of rtl, the compiler makes no further distinction + between pointers and any other objects of this machine mode. */ +#define Pmode (TARGET_64BIT ? DImode : SImode) + +/* A function address in a call instruction + is a byte address (for indexing purposes) + so give the MEM rtx a byte's mode. */ +#define FUNCTION_MODE QImode + + +/* A C expression for the cost of a branch instruction. A value of 1 + is the default; other values are interpreted relative to that. */ + +#define BRANCH_COST(speed_p, predictable_p) \ + (!(speed_p) ? 2 : (predictable_p) ? 0 : ix86_branch_cost) + +/* Define this macro as a C expression which is nonzero if accessing + less than a word of memory (i.e. a `char' or a `short') is no + faster than accessing a word of memory, i.e., if such access + require more than one instruction or if there is no difference in + cost between byte and (aligned) word loads. + + When this macro is not defined, the compiler will access a field by + finding the smallest containing object; when it is defined, a + fullword load will be used if alignment permits. Unless bytes + accesses are faster than word accesses, using word accesses is + preferable since it may eliminate subsequent memory access if + subsequent accesses occur to other fields in the same word of the + structure, but to different bytes. */ + +#define SLOW_BYTE_ACCESS 0 + +/* Nonzero if access to memory by shorts is slow and undesirable. */ +#define SLOW_SHORT_ACCESS 0 + +/* Define this macro to be the value 1 if unaligned accesses have a + cost many times greater than aligned accesses, for example if they + are emulated in a trap handler. + + When this macro is nonzero, the compiler will act as if + `STRICT_ALIGNMENT' were nonzero when generating code for block + moves. This can cause significantly more instructions to be + produced. Therefore, do not set this macro nonzero if unaligned + accesses only add a cycle or two to the time for a memory access. + + If the value of this macro is always zero, it need not be defined. */ + +/* #define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) 0 */ + +/* Define this macro if it is as good or better to call a constant + function address than to call an address kept in a register. + + Desirable on the 386 because a CALL with a constant address is + faster than one with a register address. */ + +#define NO_FUNCTION_CSE + +/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, + return the mode to be used for the comparison. + + For floating-point equality comparisons, CCFPEQmode should be used. + VOIDmode should be used in all other cases. + + For integer comparisons against zero, reduce to CCNOmode or CCZmode if + possible, to allow for more combinations. */ + +#define SELECT_CC_MODE(OP, X, Y) ix86_cc_mode ((OP), (X), (Y)) + +/* Return nonzero if MODE implies a floating point inequality can be + reversed. */ + +#define REVERSIBLE_CC_MODE(MODE) 1 + +/* A C expression whose value is reversed condition code of the CODE for + comparison done in CC_MODE mode. */ +#define REVERSE_CONDITION(CODE, MODE) ix86_reverse_condition ((CODE), (MODE)) + + +/* Control the assembler format that we output, to the extent + this does not vary between assemblers. */ + +/* How to refer to registers in assembler output. + This sequence is indexed by compiler's hard-register-number (see above). */ + +/* In order to refer to the first 8 regs as 32-bit regs, prefix an "e". + For non floating point regs, the following are the HImode names. + + For float regs, the stack top is sometimes referred to as "%st(0)" + instead of just "%st". TARGET_PRINT_OPERAND handles this with the + "y" code. */ + +#define HI_REGISTER_NAMES \ +{"ax","dx","cx","bx","si","di","bp","sp", \ + "st","st(1)","st(2)","st(3)","st(4)","st(5)","st(6)","st(7)", \ + "argp", "flags", "fpsr", "fpcr", "frame", \ + "xmm0","xmm1","xmm2","xmm3","xmm4","xmm5","xmm6","xmm7", \ + "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", \ + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ + "xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15"} + +#define REGISTER_NAMES HI_REGISTER_NAMES + +/* Table of additional register names to use in user input. */ + +#define ADDITIONAL_REGISTER_NAMES \ +{ { "eax", 0 }, { "edx", 1 }, { "ecx", 2 }, { "ebx", 3 }, \ + { "esi", 4 }, { "edi", 5 }, { "ebp", 6 }, { "esp", 7 }, \ + { "rax", 0 }, { "rdx", 1 }, { "rcx", 2 }, { "rbx", 3 }, \ + { "rsi", 4 }, { "rdi", 5 }, { "rbp", 6 }, { "rsp", 7 }, \ + { "al", 0 }, { "dl", 1 }, { "cl", 2 }, { "bl", 3 }, \ + { "ah", 0 }, { "dh", 1 }, { "ch", 2 }, { "bh", 3 } } + +/* Note we are omitting these since currently I don't know how +to get gcc to use these, since they want the same but different +number as al, and ax. +*/ + +#define QI_REGISTER_NAMES \ +{"al", "dl", "cl", "bl", "sil", "dil", "bpl", "spl",} + +/* These parallel the array above, and can be used to access bits 8:15 + of regs 0 through 3. */ + +#define QI_HIGH_REGISTER_NAMES \ +{"ah", "dh", "ch", "bh", } + +/* How to renumber registers for dbx and gdb. */ + +#define DBX_REGISTER_NUMBER(N) \ + (TARGET_64BIT ? dbx64_register_map[(N)] : dbx_register_map[(N)]) + +extern int const dbx_register_map[FIRST_PSEUDO_REGISTER]; +extern int const dbx64_register_map[FIRST_PSEUDO_REGISTER]; +extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER]; + +/* Before the prologue, RA is at 0(%esp). */ +#define INCOMING_RETURN_ADDR_RTX \ + gen_rtx_MEM (VOIDmode, gen_rtx_REG (VOIDmode, STACK_POINTER_REGNUM)) + +/* After the prologue, RA is at -4(AP) in the current frame. */ +#define RETURN_ADDR_RTX(COUNT, FRAME) \ + ((COUNT) == 0 \ + ? gen_rtx_MEM (Pmode, plus_constant (arg_pointer_rtx, -UNITS_PER_WORD)) \ + : gen_rtx_MEM (Pmode, plus_constant (FRAME, UNITS_PER_WORD))) + +/* PC is dbx register 8; let's use that column for RA. */ +#define DWARF_FRAME_RETURN_COLUMN (TARGET_64BIT ? 16 : 8) + +/* Before the prologue, the top of the frame is at 4(%esp). */ +#define INCOMING_FRAME_SP_OFFSET UNITS_PER_WORD + +/* Describe how we implement __builtin_eh_return. */ +#define EH_RETURN_DATA_REGNO(N) ((N) <= DX_REG ? (N) : INVALID_REGNUM) +#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, CX_REG) + + +/* Select a format to encode pointers in exception handling data. CODE + is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is + true if the symbol may be affected by dynamic relocations. + + ??? All x86 object file formats are capable of representing this. + After all, the relocation needed is the same as for the call insn. + Whether or not a particular assembler allows us to enter such, I + guess we'll have to see. */ +#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ + asm_preferred_eh_data_format ((CODE), (GLOBAL)) + +/* This is how to output an insn to push a register on the stack. + It need not be very fast code. */ + +#define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ +do { \ + if (TARGET_64BIT) \ + asm_fprintf ((FILE), "\tpush{q}\t%%r%s\n", \ + reg_names[(REGNO)] + (REX_INT_REGNO_P (REGNO) != 0)); \ + else \ + asm_fprintf ((FILE), "\tpush{l}\t%%e%s\n", reg_names[(REGNO)]); \ +} while (0) + +/* This is how to output an insn to pop a register from the stack. + It need not be very fast code. */ + +#define ASM_OUTPUT_REG_POP(FILE, REGNO) \ +do { \ + if (TARGET_64BIT) \ + asm_fprintf ((FILE), "\tpop{q}\t%%r%s\n", \ + reg_names[(REGNO)] + (REX_INT_REGNO_P (REGNO) != 0)); \ + else \ + asm_fprintf ((FILE), "\tpop{l}\t%%e%s\n", reg_names[(REGNO)]); \ +} while (0) + +/* This is how to output an element of a case-vector that is absolute. */ + +#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ + ix86_output_addr_vec_elt ((FILE), (VALUE)) + +/* This is how to output an element of a case-vector that is relative. */ + +#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ + ix86_output_addr_diff_elt ((FILE), (VALUE), (REL)) + +/* When we see %v, we will print the 'v' prefix if TARGET_AVX is true. */ + +#define ASM_OUTPUT_AVX_PREFIX(STREAM, PTR) \ +{ \ + if ((PTR)[0] == '%' && (PTR)[1] == 'v') \ + (PTR) += TARGET_AVX ? 1 : 2; \ +} + +/* A C statement or statements which output an assembler instruction + opcode to the stdio stream STREAM. The macro-operand PTR is a + variable of type `char *' which points to the opcode name in + its "internal" form--the form that is written in the machine + description. */ + +#define ASM_OUTPUT_OPCODE(STREAM, PTR) \ + ASM_OUTPUT_AVX_PREFIX ((STREAM), (PTR)) + +/* A C statement to output to the stdio stream FILE an assembler + command to pad the location counter to a multiple of 1<<LOG + bytes if it is within MAX_SKIP bytes. */ + +#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN +#undef ASM_OUTPUT_MAX_SKIP_PAD +#define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \ + if ((LOG) != 0) \ + { \ + if ((MAX_SKIP) == 0) \ + fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ + else \ + fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ + } +#endif + +/* Write the extra assembler code needed to declare a function + properly. */ + +#undef ASM_OUTPUT_FUNCTION_LABEL +#define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \ + ix86_asm_output_function_label (FILE, NAME, DECL) + +/* Under some conditions we need jump tables in the text section, + because the assembler cannot handle label differences between + sections. This is the case for x86_64 on Mach-O for example. */ + +#define JUMP_TABLES_IN_TEXT_SECTION \ + (flag_pic && ((TARGET_MACHO && TARGET_64BIT) \ + || (!TARGET_64BIT && !HAVE_AS_GOTOFF_IN_DATA))) + +/* Switch to init or fini section via SECTION_OP, emit a call to FUNC, + and switch back. For x86 we do this only to save a few bytes that + would otherwise be unused in the text section. */ +#define CRT_MKSTR2(VAL) #VAL +#define CRT_MKSTR(x) CRT_MKSTR2(x) + +#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ + asm (SECTION_OP "\n\t" \ + "call " CRT_MKSTR(__USER_LABEL_PREFIX__) #FUNC "\n" \ + TEXT_SECTION_ASM_OP); + +/* Which processor to tune code generation for. */ + +enum processor_type +{ + PROCESSOR_I386 = 0, /* 80386 */ + PROCESSOR_I486, /* 80486DX, 80486SX, 80486DX[24] */ + PROCESSOR_PENTIUM, + PROCESSOR_PENTIUMPRO, + PROCESSOR_GEODE, + PROCESSOR_K6, + PROCESSOR_ATHLON, + PROCESSOR_PENTIUM4, + PROCESSOR_K8, + PROCESSOR_NOCONA, + PROCESSOR_CORE2_32, + PROCESSOR_CORE2_64, + PROCESSOR_COREI7_32, + PROCESSOR_COREI7_64, + PROCESSOR_GENERIC32, + PROCESSOR_GENERIC64, + PROCESSOR_AMDFAM10, + PROCESSOR_BDVER1, + PROCESSOR_BTVER1, + PROCESSOR_ATOM, + PROCESSOR_max +}; + +extern enum processor_type ix86_tune; +extern enum processor_type ix86_arch; + +enum fpmath_unit +{ + FPMATH_387 = 1, + FPMATH_SSE = 2 +}; + +extern enum fpmath_unit ix86_fpmath; + +enum tls_dialect +{ + TLS_DIALECT_GNU, + TLS_DIALECT_GNU2, + TLS_DIALECT_SUN +}; + +extern enum tls_dialect ix86_tls_dialect; + +enum cmodel { + CM_32, /* The traditional 32-bit ABI. */ + CM_SMALL, /* Assumes all code and data fits in the low 31 bits. */ + CM_KERNEL, /* Assumes all code and data fits in the high 31 bits. */ + CM_MEDIUM, /* Assumes code fits in the low 31 bits; data unlimited. */ + CM_LARGE, /* No assumptions. */ + CM_SMALL_PIC, /* Assumes code+data+got/plt fits in a 31 bit region. */ + CM_MEDIUM_PIC,/* Assumes code+got/plt fits in a 31 bit region. */ + CM_LARGE_PIC /* No assumptions. */ +}; + +extern enum cmodel ix86_cmodel; + +/* Size of the RED_ZONE area. */ +#define RED_ZONE_SIZE 128 +/* Reserved area of the red zone for temporaries. */ +#define RED_ZONE_RESERVE 8 + +enum asm_dialect { + ASM_ATT, + ASM_INTEL +}; + +extern enum asm_dialect ix86_asm_dialect; +extern unsigned int ix86_preferred_stack_boundary; +extern unsigned int ix86_incoming_stack_boundary; +extern int ix86_branch_cost, ix86_section_threshold; + +/* Smallest class containing REGNO. */ +extern enum reg_class const regclass_map[FIRST_PSEUDO_REGISTER]; + +enum ix86_fpcmp_strategy { + IX86_FPCMP_SAHF, + IX86_FPCMP_COMI, + IX86_FPCMP_ARITH +}; + +/* To properly truncate FP values into integers, we need to set i387 control + word. We can't emit proper mode switching code before reload, as spills + generated by reload may truncate values incorrectly, but we still can avoid + redundant computation of new control word by the mode switching pass. + The fldcw instructions are still emitted redundantly, but this is probably + not going to be noticeable problem, as most CPUs do have fast path for + the sequence. + + The machinery is to emit simple truncation instructions and split them + before reload to instructions having USEs of two memory locations that + are filled by this code to old and new control word. + + Post-reload pass may be later used to eliminate the redundant fildcw if + needed. */ + +enum ix86_entity +{ + I387_TRUNC = 0, + I387_FLOOR, + I387_CEIL, + I387_MASK_PM, + MAX_386_ENTITIES +}; + +enum ix86_stack_slot +{ + SLOT_VIRTUAL = 0, + SLOT_TEMP, + SLOT_CW_STORED, + SLOT_CW_TRUNC, + SLOT_CW_FLOOR, + SLOT_CW_CEIL, + SLOT_CW_MASK_PM, + MAX_386_STACK_LOCALS +}; + +/* Define this macro if the port needs extra instructions inserted + for mode switching in an optimizing compilation. */ + +#define OPTIMIZE_MODE_SWITCHING(ENTITY) \ + ix86_optimize_mode_switching[(ENTITY)] + +/* If you define `OPTIMIZE_MODE_SWITCHING', you have to define this as + initializer for an array of integers. Each initializer element N + refers to an entity that needs mode switching, and specifies the + number of different modes that might need to be set for this + entity. The position of the initializer in the initializer - + starting counting at zero - determines the integer that is used to + refer to the mode-switched entity in question. */ + +#define NUM_MODES_FOR_MODE_SWITCHING \ + { I387_CW_ANY, I387_CW_ANY, I387_CW_ANY, I387_CW_ANY } + +/* ENTITY is an integer specifying a mode-switched entity. If + `OPTIMIZE_MODE_SWITCHING' is defined, you must define this macro to + return an integer value not larger than the corresponding element + in `NUM_MODES_FOR_MODE_SWITCHING', to denote the mode that ENTITY + must be switched into prior to the execution of INSN. */ + +#define MODE_NEEDED(ENTITY, I) ix86_mode_needed ((ENTITY), (I)) + +/* This macro specifies the order in which modes for ENTITY are + processed. 0 is the highest priority. */ + +#define MODE_PRIORITY_TO_MODE(ENTITY, N) (N) + +/* Generate one or more insns to set ENTITY to MODE. HARD_REG_LIVE + is the set of hard registers live at the point where the insn(s) + are to be inserted. */ + +#define EMIT_MODE_SET(ENTITY, MODE, HARD_REGS_LIVE) \ + ((MODE) != I387_CW_ANY && (MODE) != I387_CW_UNINITIALIZED \ + ? emit_i387_cw_initialization (MODE), 0 \ + : 0) + + +/* Avoid renaming of stack registers, as doing so in combination with + scheduling just increases amount of live registers at time and in + the turn amount of fxch instructions needed. + + ??? Maybe Pentium chips benefits from renaming, someone can try.... */ + +#define HARD_REGNO_RENAME_OK(SRC, TARGET) \ + (! IN_RANGE ((SRC), FIRST_STACK_REG, LAST_STACK_REG)) + + +#define FASTCALL_PREFIX '@' + +/* Machine specific frame tracking during prologue/epilogue generation. */ + +#ifndef USED_FOR_TARGET +struct GTY(()) machine_frame_state +{ + /* This pair tracks the currently active CFA as reg+offset. When reg + is drap_reg, we don't bother trying to record here the real CFA when + it might really be a DW_CFA_def_cfa_expression. */ + rtx cfa_reg; + HOST_WIDE_INT cfa_offset; + + /* The current offset (canonically from the CFA) of ESP and EBP. + When stack frame re-alignment is active, these may not be relative + to the CFA. However, in all cases they are relative to the offsets + of the saved registers stored in ix86_frame. */ + HOST_WIDE_INT sp_offset; + HOST_WIDE_INT fp_offset; + + /* The size of the red-zone that may be assumed for the purposes of + eliding register restore notes in the epilogue. This may be zero + if no red-zone is in effect, or may be reduced from the real + red-zone value by a maximum runtime stack re-alignment value. */ + int red_zone_offset; + + /* Indicate whether each of ESP, EBP or DRAP currently holds a valid + value within the frame. If false then the offset above should be + ignored. Note that DRAP, if valid, *always* points to the CFA and + thus has an offset of zero. */ + BOOL_BITFIELD sp_valid : 1; + BOOL_BITFIELD fp_valid : 1; + BOOL_BITFIELD drap_valid : 1; + + /* Indicate whether the local stack frame has been re-aligned. When + set, the SP/FP offsets above are relative to the aligned frame + and not the CFA. */ + BOOL_BITFIELD realigned : 1; +}; + +/* Private to winnt.c. */ +struct seh_frame_state; + +struct GTY(()) machine_function { + struct stack_local_entry *stack_locals; + const char *some_ld_name; + int varargs_gpr_size; + int varargs_fpr_size; + int optimize_mode_switching[MAX_386_ENTITIES]; + + /* Number of saved registers USE_FAST_PROLOGUE_EPILOGUE + has been computed for. */ + int use_fast_prologue_epilogue_nregs; + + /* For -fsplit-stack support: A stack local which holds a pointer to + the stack arguments for a function with a variable number of + arguments. This is set at the start of the function and is used + to initialize the overflow_arg_area field of the va_list + structure. */ + rtx split_stack_varargs_pointer; + + /* This value is used for amd64 targets and specifies the current abi + to be used. MS_ABI means ms abi. Otherwise SYSV_ABI means sysv abi. */ + ENUM_BITFIELD(calling_abi) call_abi : 8; + + /* Nonzero if the function accesses a previous frame. */ + BOOL_BITFIELD accesses_prev_frame : 1; + + /* Nonzero if the function requires a CLD in the prologue. */ + BOOL_BITFIELD needs_cld : 1; + + /* Set by ix86_compute_frame_layout and used by prologue/epilogue + expander to determine the style used. */ + BOOL_BITFIELD use_fast_prologue_epilogue : 1; + + /* If true, the current function needs the default PIC register, not + an alternate register (on x86) and must not use the red zone (on + x86_64), even if it's a leaf function. We don't want the + function to be regarded as non-leaf because TLS calls need not + affect register allocation. This flag is set when a TLS call + instruction is expanded within a function, and never reset, even + if all such instructions are optimized away. Use the + ix86_current_function_calls_tls_descriptor macro for a better + approximation. */ + BOOL_BITFIELD tls_descriptor_call_expanded_p : 1; + + /* If true, the current function has a STATIC_CHAIN is placed on the + stack below the return address. */ + BOOL_BITFIELD static_chain_on_stack : 1; + + /* Nonzero if caller passes 256bit AVX modes. */ + BOOL_BITFIELD caller_pass_avx256_p : 1; + + /* Nonzero if caller returns 256bit AVX modes. */ + BOOL_BITFIELD caller_return_avx256_p : 1; + + /* Nonzero if the current callee passes 256bit AVX modes. */ + BOOL_BITFIELD callee_pass_avx256_p : 1; + + /* Nonzero if the current callee returns 256bit AVX modes. */ + BOOL_BITFIELD callee_return_avx256_p : 1; + + /* Nonzero if rescan vzerouppers in the current function is needed. */ + BOOL_BITFIELD rescan_vzeroupper_p : 1; + + /* During prologue/epilogue generation, the current frame state. + Otherwise, the frame state at the end of the prologue. */ + struct machine_frame_state fs; + + /* During SEH output, this is non-null. */ + struct seh_frame_state * GTY((skip(""))) seh; +}; +#endif + +#define ix86_stack_locals (cfun->machine->stack_locals) +#define ix86_varargs_gpr_size (cfun->machine->varargs_gpr_size) +#define ix86_varargs_fpr_size (cfun->machine->varargs_fpr_size) +#define ix86_optimize_mode_switching (cfun->machine->optimize_mode_switching) +#define ix86_current_function_needs_cld (cfun->machine->needs_cld) +#define ix86_tls_descriptor_calls_expanded_in_cfun \ + (cfun->machine->tls_descriptor_call_expanded_p) +/* Since tls_descriptor_call_expanded is not cleared, even if all TLS + calls are optimized away, we try to detect cases in which it was + optimized away. Since such instructions (use (reg REG_SP)), we can + verify whether there's any such instruction live by testing that + REG_SP is live. */ +#define ix86_current_function_calls_tls_descriptor \ + (ix86_tls_descriptor_calls_expanded_in_cfun && df_regs_ever_live_p (SP_REG)) +#define ix86_static_chain_on_stack (cfun->machine->static_chain_on_stack) + +/* Control behavior of x86_file_start. */ +#define X86_FILE_START_VERSION_DIRECTIVE false +#define X86_FILE_START_FLTUSED false + +/* Flag to mark data that is in the large address area. */ +#define SYMBOL_FLAG_FAR_ADDR (SYMBOL_FLAG_MACH_DEP << 0) +#define SYMBOL_REF_FAR_ADDR_P(X) \ + ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_FAR_ADDR) != 0) + +/* Flags to mark dllimport/dllexport. Used by PE ports, but handy to + have defined always, to avoid ifdefing. */ +#define SYMBOL_FLAG_DLLIMPORT (SYMBOL_FLAG_MACH_DEP << 1) +#define SYMBOL_REF_DLLIMPORT_P(X) \ + ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLIMPORT) != 0) + +#define SYMBOL_FLAG_DLLEXPORT (SYMBOL_FLAG_MACH_DEP << 2) +#define SYMBOL_REF_DLLEXPORT_P(X) \ + ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0) + +extern void debug_ready_dispatch (void); +extern void debug_dispatch_window (int); + +/* The value at zero is only defined for the BMI instructions + LZCNT and TZCNT, not the BSR/BSF insns in the original isa. */ +#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ + ((VALUE) = GET_MODE_BITSIZE (MODE), TARGET_BMI) +#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ + ((VALUE) = GET_MODE_BITSIZE (MODE), TARGET_BMI) + + +/* +Local variables: +version-control: t +End: +*/ |