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JIT compiler update.

This commit is contained in:
Zoltán Herczeg 2017-04-03 13:30:17 +00:00
parent 0bf17d9974
commit c37995d2bd
6 changed files with 180 additions and 99 deletions
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8
src/sljit/sljitConfigInternal.h
View File

@ -556,10 +556,10 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_sw sljit_exec_offset(void* ptr);
#define SLJIT_NUMBER_OF_REGISTERS 12
#define SLJIT_NUMBER_OF_SAVED_REGISTERS 9
#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
#define SLJIT_LOCALS_OFFSET_BASE ((2 + 6) * sizeof(sljit_sw))
#define SLJIT_LOCALS_OFFSET_BASE (compiler->locals_offset)
#else
/* Maximum 3 arguments are passed on the stack, +1 for double alignment. */
#define SLJIT_LOCALS_OFFSET_BASE ((3 + 1 + 6) * sizeof(sljit_sw))
#define SLJIT_LOCALS_OFFSET_BASE (compiler->locals_offset)
#endif /* SLJIT_X86_32_FASTCALL */
#elif (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
@ -567,11 +567,11 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_sw sljit_exec_offset(void* ptr);
#ifndef _WIN64
#define SLJIT_NUMBER_OF_REGISTERS 12
#define SLJIT_NUMBER_OF_SAVED_REGISTERS 6
#define SLJIT_LOCALS_OFFSET_BASE (sizeof(sljit_sw))
#define SLJIT_LOCALS_OFFSET_BASE 0
#else
#define SLJIT_NUMBER_OF_REGISTERS 12
#define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
#define SLJIT_LOCALS_OFFSET_BASE ((4 + 2) * sizeof(sljit_sw))
#define SLJIT_LOCALS_OFFSET_BASE (compiler->locals_offset)
#endif /* _WIN64 */
#elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)

4
src/sljit/sljitLir.c
View File

@ -903,7 +903,7 @@ static SLJIT_INLINE CHECK_RETURN_TYPE check_sljit_emit_enter(struct sljit_compil
SLJIT_UNUSED_ARG(compiler);
#if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
CHECK_ARGUMENT(!(options & ~SLJIT_DOUBLE_ALIGNMENT));
CHECK_ARGUMENT(!(options & ~SLJIT_F64_ALIGNMENT));
CHECK_ARGUMENT(args >= 0 && args <= 3);
CHECK_ARGUMENT(scratches >= 0 && scratches <= SLJIT_NUMBER_OF_REGISTERS);
CHECK_ARGUMENT(saveds >= 0 && saveds <= SLJIT_NUMBER_OF_REGISTERS);
@ -928,7 +928,7 @@ static SLJIT_INLINE CHECK_RETURN_TYPE check_sljit_set_context(struct sljit_compi
sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
{
#if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
CHECK_ARGUMENT(!(options & ~SLJIT_DOUBLE_ALIGNMENT));
CHECK_ARGUMENT(!(options & ~SLJIT_F64_ALIGNMENT));
CHECK_ARGUMENT(args >= 0 && args <= 3);
CHECK_ARGUMENT(scratches >= 0 && scratches <= SLJIT_NUMBER_OF_REGISTERS);
CHECK_ARGUMENT(saveds >= 0 && saveds <= SLJIT_NUMBER_OF_REGISTERS);

9
src/sljit/sljitLir.h
View File

@ -332,10 +332,15 @@ struct sljit_compiler {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
sljit_s32 args;
sljit_s32 locals_offset;
sljit_s32 saveds_offset;
#endif
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
sljit_s32 mode32;
#ifdef _WIN64
sljit_s32 locals_offset;
#endif
#endif
#if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
@ -528,8 +533,8 @@ static SLJIT_INLINE sljit_uw sljit_get_generated_code_size(struct sljit_compiler
*/
/* The absolute address returned by sljit_get_local_base with
offset 0 is aligned to sljit_d. Otherwise it is aligned to sljit_uw. */
#define SLJIT_DOUBLE_ALIGNMENT 0x00000001
offset 0 is aligned to sljit_f64. Otherwise it is aligned to sljit_sw. */
#define SLJIT_F64_ALIGNMENT 0x00000001
/* The local_size must be >= 0 and <= SLJIT_MAX_LOCAL_SIZE. */
#define SLJIT_MAX_LOCAL_SIZE 65536

128
src/sljit/sljitNativeX86_32.c
View File

@ -76,6 +76,28 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
compiler->args = args;
#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
/* [esp+0] for saving temporaries and third argument for calls. */
compiler->saveds_offset = 1 * sizeof(sljit_sw);
#else
/* [esp+0] for saving temporaries and space for maximum three arguments. */
if (scratches <= 1)
compiler->saveds_offset = 1 * sizeof(sljit_sw);
else
compiler->saveds_offset = ((scratches == 2) ? 2 : 3) * sizeof(sljit_sw);
#endif
if (scratches > 3)
compiler->saveds_offset += ((scratches > (3 + 6)) ? 6 : (scratches - 3)) * sizeof(sljit_sw);
compiler->locals_offset = compiler->saveds_offset;
if (saveds > 3)
compiler->locals_offset += (saveds - 3) * sizeof(sljit_sw);
if (options & SLJIT_F64_ALIGNMENT)
compiler->locals_offset = (compiler->locals_offset + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1);
size = 1 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3);
#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
size += (args > 0 ? (args * 2) : 0) + (args > 2 ? 2 : 0);
@ -133,51 +155,64 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
}
#endif
SLJIT_COMPILE_ASSERT(SLJIT_LOCALS_OFFSET >= (2 + 4) * sizeof(sljit_uw), require_at_least_two_words);
SLJIT_ASSERT(SLJIT_LOCALS_OFFSET > 0);
#if defined(__APPLE__)
/* Ignore pushed registers and SLJIT_LOCALS_OFFSET when computing the aligned local size. */
saveds = (2 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw);
local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds;
#else
if (options & SLJIT_DOUBLE_ALIGNMENT) {
local_size = SLJIT_LOCALS_OFFSET + ((local_size + 7) & ~7);
inst = (sljit_u8*)ensure_buf(compiler, 1 + 17);
FAIL_IF(!inst);
INC_SIZE(17);
inst[0] = MOV_r_rm;
inst[1] = MOD_REG | (reg_map[TMP_REG1] << 3) | reg_map[SLJIT_SP];
inst[2] = GROUP_F7;
inst[3] = MOD_REG | (0 << 3) | reg_map[SLJIT_SP];
sljit_unaligned_store_sw(inst + 4, 0x4);
inst[8] = JNE_i8;
inst[9] = 6;
inst[10] = GROUP_BINARY_81;
inst[11] = MOD_REG | (5 << 3) | reg_map[SLJIT_SP];
sljit_unaligned_store_sw(inst + 12, 0x4);
inst[16] = PUSH_r + reg_map[TMP_REG1];
}
if (options & SLJIT_F64_ALIGNMENT)
local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1));
else
local_size = SLJIT_LOCALS_OFFSET + ((local_size + 3) & ~3);
local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_sw) - 1) & ~(sizeof(sljit_sw) - 1));
#endif
compiler->local_size = local_size;
#ifdef _WIN32
if (local_size > 1024) {
#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size));
#else
local_size -= SLJIT_LOCALS_OFFSET;
/* Space for a single argument. This amount is excluded when the stack is allocated below. */
local_size -= sizeof(sljit_sw);
FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size));
FAIL_IF(emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, SLJIT_LOCALS_OFFSET));
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, sizeof(sljit_sw)));
#endif
FAIL_IF(sljit_emit_ijump(compiler, SLJIT_CALL1, SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_grow_stack)));
}
#endif
SLJIT_ASSERT(local_size > 0);
#if !defined(__APPLE__)
if (options & SLJIT_F64_ALIGNMENT) {
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_SP, 0);
/* Some space might allocated during sljit_grow_stack() above on WIN32. */
FAIL_IF(emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size + sizeof(sljit_sw)));
#if defined _WIN32 && !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
if (compiler->local_size > 1024)
FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32,
TMP_REG1, 0, TMP_REG1, 0, SLJIT_IMM, sizeof(sljit_sw)));
#endif
inst = (sljit_u8*)ensure_buf(compiler, 1 + 6);
FAIL_IF(!inst);
INC_SIZE(6);
inst[0] = GROUP_BINARY_81;
inst[1] = MOD_REG | AND | reg_map[SLJIT_SP];
sljit_unaligned_store_sw(inst + 2, ~(sizeof(sljit_f64) - 1));
/* The real local size must be used. */
return emit_mov(compiler, SLJIT_MEM1(SLJIT_SP), compiler->local_size, TMP_REG1, 0);
}
#endif
return emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size);
}
@ -192,14 +227,36 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *comp
compiler->args = args;
#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
/* [esp+0] for saving temporaries and third argument for calls. */
compiler->saveds_offset = 1 * sizeof(sljit_sw);
#else
/* [esp+0] for saving temporaries and space for maximum three arguments. */
if (scratches <= 1)
compiler->saveds_offset = 1 * sizeof(sljit_sw);
else
compiler->saveds_offset = ((scratches == 2) ? 2 : 3) * sizeof(sljit_sw);
#endif
if (scratches > 3)
compiler->saveds_offset += ((scratches > (3 + 6)) ? 6 : (scratches - 3)) * sizeof(sljit_sw);
compiler->locals_offset = compiler->saveds_offset;
if (saveds > 3)
compiler->locals_offset += (saveds - 3) * sizeof(sljit_sw);
if (options & SLJIT_F64_ALIGNMENT)
compiler->locals_offset = (compiler->locals_offset + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1);
#if defined(__APPLE__)
saveds = (2 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw);
compiler->local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds;
#else
if (options & SLJIT_DOUBLE_ALIGNMENT)
compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + 7) & ~7);
if (options & SLJIT_F64_ALIGNMENT)
compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1));
else
compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + 3) & ~3);
compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_sw) - 1) & ~(sizeof(sljit_sw) - 1));
#endif
return SLJIT_SUCCESS;
}
@ -216,19 +273,16 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *comp
FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
SLJIT_ASSERT(compiler->local_size > 0);
FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size));
#if !defined(__APPLE__)
if (compiler->options & SLJIT_DOUBLE_ALIGNMENT) {
inst = (sljit_u8*)ensure_buf(compiler, 1 + 3);
FAIL_IF(!inst);
INC_SIZE(3);
inst[0] = MOV_r_rm;
inst[1] = (reg_map[SLJIT_SP] << 3) | 0x4 /* SIB */;
inst[2] = (4 << 3) | reg_map[SLJIT_SP];
}
if (compiler->options & SLJIT_F64_ALIGNMENT)
EMIT_MOV(compiler, SLJIT_SP, 0, SLJIT_MEM1(SLJIT_SP), compiler->local_size)
else
FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size));
#else
FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32,
SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size));
#endif
size = 2 + (compiler->scratches > 7 ? (compiler->scratches - 7) : 0) +

28
src/sljit/sljitNativeX86_64.c
View File

@ -76,6 +76,14 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
#ifdef _WIN64
/* Two/four register slots for parameters plus space for xmm6 register if needed. */
if (fscratches >= 6 || fsaveds >= 1)
compiler->locals_offset = 6 * sizeof(sljit_sw);
else
compiler->locals_offset = ((scratches > 2) ? 4 : 2) * sizeof(sljit_sw);
#endif
/* Including the return address saved by the call instruction. */
saved_register_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
@ -153,7 +161,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
INC_SIZE(4 + (3 + sizeof(sljit_s32)));
*inst++ = REX_W;
*inst++ = GROUP_BINARY_83;
*inst++ = MOD_REG | SUB | 4;
*inst++ = MOD_REG | SUB | reg_map[SLJIT_SP];
/* Allocated size for registers must be divisible by 8. */
SLJIT_ASSERT(!(saved_register_size & 0x7));
/* Aligned to 16 byte. */
@ -178,14 +186,14 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
}
#endif
SLJIT_ASSERT(local_size > 0);
if (local_size > 0) {
if (local_size <= 127) {
inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
FAIL_IF(!inst);
INC_SIZE(4);
*inst++ = REX_W;
*inst++ = GROUP_BINARY_83;
*inst++ = MOD_REG | SUB | 4;
*inst++ = MOD_REG | SUB | reg_map[SLJIT_SP];
*inst++ = local_size;
}
else {
@ -194,10 +202,11 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compi
INC_SIZE(7);
*inst++ = REX_W;
*inst++ = GROUP_BINARY_81;
*inst++ = MOD_REG | SUB | 4;
*inst++ = MOD_REG | SUB | reg_map[SLJIT_SP];
sljit_unaligned_store_s32(inst, local_size);
inst += sizeof(sljit_s32);
}
}
#ifdef _WIN64
/* Save xmm6 register: movaps [rsp + 0x20], xmm6 */
@ -223,6 +232,14 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *comp
CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
#ifdef _WIN64
/* Two/four register slots for parameters plus space for xmm6 register if needed. */
if (fscratches >= 6 || fsaveds >= 1)
compiler->locals_offset = 6 * sizeof(sljit_sw);
else
compiler->locals_offset = ((scratches > 2) ? 4 : 2) * sizeof(sljit_sw);
#endif
/* Including the return address saved by the call instruction. */
saved_register_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
compiler->local_size = ((local_size + SLJIT_LOCALS_OFFSET + saved_register_size + 15) & ~15) - saved_register_size;
@ -250,7 +267,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *comp
}
#endif
SLJIT_ASSERT(compiler->local_size > 0);
if (compiler->local_size > 0) {
if (compiler->local_size <= 127) {
inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
FAIL_IF(!inst);
@ -269,6 +286,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *comp
*inst++ = MOD_REG | ADD | 4;
sljit_unaligned_store_s32(inst, compiler->local_size);
}
}
tmp = compiler->scratches;
for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {

36
src/sljit/sljitNativeX86_common.c
View File

@ -71,8 +71,11 @@ static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 3] = {
};
#define CHECK_EXTRA_REGS(p, w, do) \
if (p >= SLJIT_R3 && p <= SLJIT_R8) { \
w = SLJIT_LOCALS_OFFSET + ((p) - (SLJIT_R3 + 6)) * sizeof(sljit_sw); \
if (p >= SLJIT_R3 && p <= SLJIT_S3) { \
if (p <= compiler->scratches) \
w = compiler->saveds_offset - ((p) - SLJIT_R2) * (sljit_sw)sizeof(sljit_sw); \
else \
w = compiler->locals_offset + ((p) - SLJIT_S2) * (sljit_sw)sizeof(sljit_sw); \
p = SLJIT_MEM1(SLJIT_SP); \
do; \
}
@ -605,6 +608,9 @@ static sljit_s32 emit_mov(struct sljit_compiler *compiler,
sljit_s32 dst, sljit_sw dstw,
sljit_s32 src, sljit_sw srcw);
#define EMIT_MOV(compiler, dst, dstw, src, srcw) \
FAIL_IF(emit_mov(compiler, dst, dstw, src, srcw));
#ifdef _WIN32
#include <malloc.h>
@ -693,9 +699,6 @@ static sljit_s32 emit_mov(struct sljit_compiler *compiler,
return SLJIT_SUCCESS;
}
#define EMIT_MOV(compiler, dst, dstw, src, srcw) \
FAIL_IF(emit_mov(compiler, dst, dstw, src, srcw));
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
{
sljit_u8 *inst;
@ -1880,7 +1883,7 @@ static sljit_s32 emit_test_binary(struct sljit_compiler *compiler,
}
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
if (src2 == SLJIT_R0 && (src2 & SLJIT_IMM) && (src1w > 127 || src1w < -128) && (compiler->mode32 || IS_HALFWORD(src1w))) {
if (src2 == SLJIT_R0 && (src1 & SLJIT_IMM) && (src1w > 127 || src1w < -128) && (compiler->mode32 || IS_HALFWORD(src1w))) {
#else
if (src2 == SLJIT_R0 && (src1 & SLJIT_IMM) && (src1w > 127 || src1w < -128)) {
#endif
@ -2039,14 +2042,13 @@ static sljit_s32 emit_shift(struct sljit_compiler *compiler,
EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
}
else {
/* This case is really difficult, since ecx itself may used for
addressing, and we must ensure to work even in that case. */
/* This case is complex since ecx itself may be used for
addressing, and this case must be supported as well. */
EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
EMIT_MOV(compiler, TMP_REG2, 0, SLJIT_PREF_SHIFT_REG, 0);
#else
/* [esp+0] contains the flags. */
EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_sw), SLJIT_PREF_SHIFT_REG, 0);
EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_PREF_SHIFT_REG, 0);
#endif
EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, src2, src2w);
inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
@ -2055,7 +2057,7 @@ static sljit_s32 emit_shift(struct sljit_compiler *compiler,
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG2, 0);
#else
EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_sw));
EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, SLJIT_MEM1(SLJIT_SP), 0);
#endif
EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
}
@ -2594,11 +2596,10 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co
sljit_u8 cond_set = 0;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
sljit_s32 reg;
#else
/* CHECK_EXTRA_REGS migh overwrite these values. */
#endif
/* ADJUST_LOCAL_OFFSET and CHECK_EXTRA_REGS might overwrite these values. */
sljit_s32 dst_save = dst;
sljit_sw dstw_save = dstw;
#endif
CHECK_ERROR();
CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type));
@ -2641,6 +2642,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co
*inst++ = cond_set;
*inst++ = MOD_REG | reg_lmap[reg];
*inst++ = REX_W | (reg_map[reg] <= 7 ? 0 : (REX_B | REX_R));
/* The movzx instruction does not affect flags. */
*inst++ = GROUP_0F;
*inst++ = MOVZX_r_rm8;
*inst = MOD_REG | (reg_lmap[reg] << 3) | reg_lmap[reg];
@ -2656,8 +2658,10 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
return sljit_emit_op2(compiler, op, dst, dstw, dst, dstw, TMP_REG1, 0);
#else /* SLJIT_CONFIG_X86_64 */
return sljit_emit_op2(compiler, op, dst_save, dstw_save, dst_save, dstw_save, TMP_REG1, 0);
#else
/* The SLJIT_CONFIG_X86_32 code path starts here. */
if (GET_OPCODE(op) < SLJIT_ADD && FAST_IS_REG(dst)) {
if (reg_map[dst] <= 4) {
/* Low byte is accessible. */