sljitNativeX86_common.c

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/*
 *    Stack-less Just-In-Time compiler
 *
 *    Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice, this list of
 *      conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright notice, this list
 *      of conditions and the following disclaimer in the documentation and/or other materials
 *      provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
{
    return "x86" SLJIT_CPUINFO;
}
 
/*
   32b register indexes:
     0 - EAX
     1 - ECX
     2 - EDX
     3 - EBX
     4 - ESP
     5 - EBP
     6 - ESI
     7 - EDI
*/
 
/*
   64b register indexes:
     0 - RAX
     1 - RCX
     2 - RDX
     3 - RBX
     4 - RSP
     5 - RBP
     6 - RSI
     7 - RDI
     8 - R8   - From now on REX prefix is required
     9 - R9
    10 - R10
    11 - R11
    12 - R12
    13 - R13
    14 - R14
    15 - R15
*/
 
#define TMP_REG1    (SLJIT_NUMBER_OF_REGISTERS + 2)
#define TMP_FREG    (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 
static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 3] = {
    0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 5, 7, 6, 4, 3
};
 
static const sljit_u8 freg_map[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2] = {
    0, 1, 2, 3, 4, 5, 6, 7, 0
};
 
#define CHECK_EXTRA_REGS(p, w, do) \
    if (p >= SLJIT_R3 && p <= SLJIT_S3) { \
        w = (2 * SSIZE_OF(sw)) + ((p) - SLJIT_R3) * SSIZE_OF(sw); \
        p = SLJIT_MEM1(SLJIT_SP); \
        do; \
    }
 
#else /* SLJIT_CONFIG_X86_32 */
 
#define TMP_REG2    (SLJIT_NUMBER_OF_REGISTERS + 3)
 
/* Note: r12 & 0x7 == 0b100, which decoded as SIB byte present
   Note: avoid to use r12 and r13 for memory addressing
   therefore r12 is better to be a higher saved register. */
#ifndef _WIN64
/* Args: rdi(=7), rsi(=6), rdx(=2), rcx(=1), r8, r9. Scratches: rax(=0), r10, r11 */
static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 4] = {
    0, 0, 6, 7, 1, 8, 11, 10, 12, 5, 13, 14, 15, 3, 4, 2, 9
};
/* low-map. reg_map & 0x7. */
static const sljit_u8 reg_lmap[SLJIT_NUMBER_OF_REGISTERS + 4] = {
    0, 0, 6, 7, 1, 0,  3,  2,  4, 5,  5,  6,  7, 3, 4, 2, 1
};
#else
/* Args: rcx(=1), rdx(=2), r8, r9. Scratches: rax(=0), r10, r11 */
static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 4] = {
    0, 0, 2, 8, 1, 11, 12, 5, 13, 14, 15, 7, 6, 3, 4, 9, 10
};
/* low-map. reg_map & 0x7. */
static const sljit_u8 reg_lmap[SLJIT_NUMBER_OF_REGISTERS + 4] = {
    0, 0, 2, 0, 1,  3,  4, 5,  5,  6,  7, 7, 6, 3, 4, 1,  2
};
#endif
 
/* Args: xmm0-xmm3 */
static const sljit_u8 freg_map[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2] = {
    0, 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 4
};
/* low-map. freg_map & 0x7. */
static const sljit_u8 freg_lmap[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2] = {
    0, 0, 1, 2, 3, 5, 6, 7, 0, 1,  2,  3,  4,  5,  6,  7, 4
};
 
#define REX_W       0x48
#define REX_R       0x44
#define REX_X       0x42
#define REX_B       0x41
#define REX     0x40
 
#ifndef _WIN64
#define HALFWORD_MAX 0x7fffffffl
#define HALFWORD_MIN -0x80000000l
#else
#define HALFWORD_MAX 0x7fffffffll
#define HALFWORD_MIN -0x80000000ll
#endif
 
#define IS_HALFWORD(x)      ((x) <= HALFWORD_MAX && (x) >= HALFWORD_MIN)
#define NOT_HALFWORD(x)     ((x) > HALFWORD_MAX || (x) < HALFWORD_MIN)
 
#define CHECK_EXTRA_REGS(p, w, do)
 
#endif /* SLJIT_CONFIG_X86_32 */
 
#define U8(v)           ((sljit_u8)(v))
 
/* Size flags for emit_x86_instruction: */
#define EX86_BIN_INS        ((sljit_uw)0x000010)
#define EX86_SHIFT_INS      ((sljit_uw)0x000020)
#define EX86_BYTE_ARG       ((sljit_uw)0x000040)
#define EX86_HALF_ARG       ((sljit_uw)0x000080)
/* Size flags for both emit_x86_instruction and emit_vex_instruction: */
#define EX86_REX        ((sljit_uw)0x000100)
#define EX86_NO_REXW        ((sljit_uw)0x000200)
#define EX86_PREF_66        ((sljit_uw)0x000400)
#define EX86_PREF_F2        ((sljit_uw)0x000800)
#define EX86_PREF_F3        ((sljit_uw)0x001000)
#define EX86_SSE2_OP1       ((sljit_uw)0x002000)
#define EX86_SSE2_OP2       ((sljit_uw)0x004000)
#define EX86_SSE2       (EX86_SSE2_OP1 | EX86_SSE2_OP2)
#define EX86_VEX_EXT        ((sljit_uw)0x008000)
/* Op flags for emit_vex_instruction: */
#define VEX_OP_0F38     ((sljit_uw)0x010000)
#define VEX_OP_0F3A     ((sljit_uw)0x020000)
#define VEX_SSE2_OPV        ((sljit_uw)0x040000)
#define VEX_AUTO_W      ((sljit_uw)0x080000)
#define VEX_W           ((sljit_uw)0x100000)
#define VEX_256         ((sljit_uw)0x200000)
 
#define EX86_SELECT_66(op)  (((op) & SLJIT_32) ? 0 : EX86_PREF_66)
#define EX86_SELECT_F2_F3(op)   (((op) & SLJIT_32) ? EX86_PREF_F3 : EX86_PREF_F2)
 
/* --------------------------------------------------------------------- */
/*  Instruction forms                                                    */
/* --------------------------------------------------------------------- */
 
#define ADD         (/* BINARY */ 0 << 3)
#define ADD_EAX_i32     0x05
#define ADD_r_rm        0x03
#define ADD_rm_r        0x01
#define ADDSD_x_xm      0x58
#define ADC         (/* BINARY */ 2 << 3)
#define ADC_EAX_i32     0x15
#define ADC_r_rm        0x13
#define ADC_rm_r        0x11
#define AND         (/* BINARY */ 4 << 3)
#define AND_EAX_i32     0x25
#define AND_r_rm        0x23
#define AND_rm_r        0x21
#define ANDPD_x_xm      0x54
#define BSR_r_rm        (/* GROUP_0F */ 0xbd)
#define BSF_r_rm        (/* GROUP_0F */ 0xbc)
#define BSWAP_r         (/* GROUP_0F */ 0xc8)
#define CALL_i32        0xe8
#define CALL_rm         (/* GROUP_FF */ 2 << 3)
#define CDQ         0x99
#define CMOVE_r_rm      (/* GROUP_0F */ 0x44)
#define CMP         (/* BINARY */ 7 << 3)
#define CMP_EAX_i32     0x3d
#define CMP_r_rm        0x3b
#define CMP_rm_r        0x39
#define CMPS_x_xm       0xc2
#define CMPXCHG_rm_r        0xb1
#define CMPXCHG_rm8_r       0xb0
#define CVTPD2PS_x_xm       0x5a
#define CVTPS2PD_x_xm       0x5a
#define CVTSI2SD_x_rm       0x2a
#define CVTTSD2SI_r_xm      0x2c
#define DIV         (/* GROUP_F7 */ 6 << 3)
#define DIVSD_x_xm      0x5e
#define EXTRACTPS_x_xm      0x17
#define FLDS            0xd9
#define FLDL            0xdd
#define FSTPS           0xd9
#define FSTPD           0xdd
#define INSERTPS_x_xm       0x21
#define INT3            0xcc
#define IDIV            (/* GROUP_F7 */ 7 << 3)
#define IMUL            (/* GROUP_F7 */ 5 << 3)
#define IMUL_r_rm       (/* GROUP_0F */ 0xaf)
#define IMUL_r_rm_i8        0x6b
#define IMUL_r_rm_i32       0x69
#define JL_i8           0x7c
#define JE_i8           0x74
#define JNC_i8          0x73
#define JNE_i8          0x75
#define JMP_i8          0xeb
#define JMP_i32         0xe9
#define JMP_rm          (/* GROUP_FF */ 4 << 3)
#define LEA_r_m         0x8d
#define LOOP_i8         0xe2
#define LZCNT_r_rm      (/* GROUP_F3 */ /* GROUP_0F */ 0xbd)
#define MOV_r_rm        0x8b
#define MOV_r_i32       0xb8
#define MOV_rm_r        0x89
#define MOV_rm_i32      0xc7
#define MOV_rm8_i8      0xc6
#define MOV_rm8_r8      0x88
#define MOVAPS_x_xm     0x28
#define MOVAPS_xm_x     0x29
#define MOVD_x_rm       0x6e
#define MOVD_rm_x       0x7e
#define MOVDDUP_x_xm        0x12
#define MOVDQA_x_xm     0x6f
#define MOVDQA_xm_x     0x7f
#define MOVHLPS_x_x     0x12
#define MOVHPD_m_x      0x17
#define MOVHPD_x_m      0x16
#define MOVLHPS_x_x     0x16
#define MOVLPD_m_x      0x13
#define MOVLPD_x_m      0x12
#define MOVMSKPS_r_x        (/* GROUP_0F */ 0x50)
#define MOVQ_x_xm       (/* GROUP_0F */ 0x7e)
#define MOVSD_x_xm      0x10
#define MOVSD_xm_x      0x11
#define MOVSHDUP_x_xm       0x16
#define MOVSXD_r_rm     0x63
#define MOVSX_r_rm8     (/* GROUP_0F */ 0xbe)
#define MOVSX_r_rm16        (/* GROUP_0F */ 0xbf)
#define MOVUPS_x_xm     0x10
#define MOVZX_r_rm8     (/* GROUP_0F */ 0xb6)
#define MOVZX_r_rm16        (/* GROUP_0F */ 0xb7)
#define MUL         (/* GROUP_F7 */ 4 << 3)
#define MULSD_x_xm      0x59
#define NEG_rm          (/* GROUP_F7 */ 3 << 3)
#define NOP         0x90
#define NOT_rm          (/* GROUP_F7 */ 2 << 3)
#define OR          (/* BINARY */ 1 << 3)
#define OR_r_rm         0x0b
#define OR_EAX_i32      0x0d
#define OR_rm_r         0x09
#define OR_rm8_r8       0x08
#define ORPD_x_xm       0x56
#define PACKSSWB_x_xm       (/* GROUP_0F */ 0x63)
#define PAND_x_xm       0xdb
#define PCMPEQD_x_xm        0x76
#define PINSRB_x_rm_i8      0x20
#define PINSRW_x_rm_i8      0xc4
#define PINSRD_x_rm_i8      0x22
#define PEXTRB_rm_x_i8      0x14
#define PEXTRW_rm_x_i8      0x15
#define PEXTRD_rm_x_i8      0x16
#define PMOVMSKB_r_x        (/* GROUP_0F */ 0xd7)
#define PMOVSXBD_x_xm       0x21
#define PMOVSXBQ_x_xm       0x22
#define PMOVSXBW_x_xm       0x20
#define PMOVSXDQ_x_xm       0x25
#define PMOVSXWD_x_xm       0x23
#define PMOVSXWQ_x_xm       0x24
#define PMOVZXBD_x_xm       0x31
#define PMOVZXBQ_x_xm       0x32
#define PMOVZXBW_x_xm       0x30
#define PMOVZXDQ_x_xm       0x35
#define PMOVZXWD_x_xm       0x33
#define PMOVZXWQ_x_xm       0x34
#define POP_r           0x58
#define POP_rm          0x8f
#define POPF            0x9d
#define POR_x_xm        0xeb
#define PREFETCH        0x18
#define PSHUFB_x_xm     0x00
#define PSHUFD_x_xm     0x70
#define PSHUFLW_x_xm        0x70
#define PSRLDQ_x        0x73
#define PSLLD_x_i8      0x72
#define PSLLQ_x_i8      0x73
#define PUSH_i32        0x68
#define PUSH_r          0x50
#define PUSH_rm         (/* GROUP_FF */ 6 << 3)
#define PUSHF           0x9c
#define PXOR_x_xm       0xef
#define ROL         (/* SHIFT */ 0 << 3)
#define ROR         (/* SHIFT */ 1 << 3)
#define RET_near        0xc3
#define RET_i16         0xc2
#define SBB         (/* BINARY */ 3 << 3)
#define SBB_EAX_i32     0x1d
#define SBB_r_rm        0x1b
#define SBB_rm_r        0x19
#define SAR         (/* SHIFT */ 7 << 3)
#define SHL         (/* SHIFT */ 4 << 3)
#define SHLD            (/* GROUP_0F */ 0xa5)
#define SHRD            (/* GROUP_0F */ 0xad)
#define SHR         (/* SHIFT */ 5 << 3)
#define SHUFPS_x_xm     0xc6
#define SUB         (/* BINARY */ 5 << 3)
#define SUB_EAX_i32     0x2d
#define SUB_r_rm        0x2b
#define SUB_rm_r        0x29
#define SUBSD_x_xm      0x5c
#define TEST_EAX_i32        0xa9
#define TEST_rm_r       0x85
#define TZCNT_r_rm      (/* GROUP_F3 */ /* GROUP_0F */ 0xbc)
#define UCOMISD_x_xm        0x2e
#define UNPCKLPD_x_xm       0x14
#define UNPCKLPS_x_xm       0x14
#define VBROADCASTSD_x_xm   0x19
#define VBROADCASTSS_x_xm   0x18
#define VEXTRACTF128_x_ym   0x19
#define VEXTRACTI128_x_ym   0x39
#define VINSERTF128_y_y_xm  0x18
#define VINSERTI128_y_y_xm  0x38
#define VPBROADCASTB_x_xm   0x78
#define VPBROADCASTD_x_xm   0x58
#define VPBROADCASTQ_x_xm   0x59
#define VPBROADCASTW_x_xm   0x79
#define VPERMPD_y_ym        0x01
#define VPERMQ_y_ym     0x00
#define XCHG_EAX_r      0x90
#define XCHG_r_rm       0x87
#define XOR         (/* BINARY */ 6 << 3)
#define XOR_EAX_i32     0x35
#define XOR_r_rm        0x33
#define XOR_rm_r        0x31
#define XORPD_x_xm      0x57
 
#define GROUP_0F        0x0f
#define GROUP_66        0x66
#define GROUP_F3        0xf3
#define GROUP_F7        0xf7
#define GROUP_FF        0xff
#define GROUP_BINARY_81     0x81
#define GROUP_BINARY_83     0x83
#define GROUP_SHIFT_1       0xd1
#define GROUP_SHIFT_N       0xc1
#define GROUP_SHIFT_CL      0xd3
#define GROUP_LOCK      0xf0
 
#define MOD_REG         0xc0
#define MOD_DISP8       0x40
 
#define INC_SIZE(s)     (*inst++ = U8(s), compiler->size += (s))
 
#define PUSH_REG(r)     (*inst++ = U8(PUSH_r + (r)))
#define POP_REG(r)      (*inst++ = U8(POP_r + (r)))
#define RET()           (*inst++ = RET_near)
#define RET_I16(n)      (*inst++ = RET_i16, *inst++ = U8(n), *inst++ = 0)
 
#define SLJIT_INST_LABEL    255
#define SLJIT_INST_JUMP     254
#define SLJIT_INST_MOV_ADDR 253
#define SLJIT_INST_CONST    252
 
/* Multithreading does not affect these static variables, since they store
   built-in CPU features. Therefore they can be overwritten by different threads
   if they detect the CPU features in the same time. */
#define CPU_FEATURE_DETECTED        0x001
#if (defined SLJIT_DETECT_SSE2 && SLJIT_DETECT_SSE2)
#define CPU_FEATURE_SSE2        0x002
#endif
#define CPU_FEATURE_SSE41       0x004
#define CPU_FEATURE_LZCNT       0x008
#define CPU_FEATURE_TZCNT       0x010
#define CPU_FEATURE_CMOV        0x020
#define CPU_FEATURE_AVX         0x040
#define CPU_FEATURE_AVX2        0x080
#define CPU_FEATURE_OSXSAVE     0x100
 
static sljit_u32 cpu_feature_list = 0;
 
#ifdef _WIN32_WCE
#include <cmnintrin.h>
#elif defined(_MSC_VER) && _MSC_VER >= 1400
#include <intrin.h>
#endif
 
/******************************************************/
/*    Unaligned-store functions                       */
/******************************************************/
 
static SLJIT_INLINE void sljit_unaligned_store_s16(void *addr, sljit_s16 value)
{
    SLJIT_MEMCPY(addr, &value, sizeof(value));
}
 
static SLJIT_INLINE void sljit_unaligned_store_s32(void *addr, sljit_s32 value)
{
    SLJIT_MEMCPY(addr, &value, sizeof(value));
}
 
static SLJIT_INLINE void sljit_unaligned_store_sw(void *addr, sljit_sw value)
{
    SLJIT_MEMCPY(addr, &value, sizeof(value));
}
 
/******************************************************/
/*    Utility functions                               */
/******************************************************/
 
static void execute_cpu_id(sljit_u32 info[4])
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
 
    __cpuidex((int*)info, (int)info[0], (int)info[2]);
 
#elif defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__TINYC__)
 
    /* AT&T syntax. */
    __asm__ (
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        "movl %0, %%esi\n"
        "movl (%%esi), %%eax\n"
        "movl 8(%%esi), %%ecx\n"
        "pushl %%ebx\n"
        "cpuid\n"
        "movl %%eax, (%%esi)\n"
        "movl %%ebx, 4(%%esi)\n"
        "popl %%ebx\n"
        "movl %%ecx, 8(%%esi)\n"
        "movl %%edx, 12(%%esi)\n"
#else /* !SLJIT_CONFIG_X86_32 */
        "movq %0, %%rsi\n"
        "movl (%%rsi), %%eax\n"
        "movl 8(%%rsi), %%ecx\n"
        "cpuid\n"
        "movl %%eax, (%%rsi)\n"
        "movl %%ebx, 4(%%rsi)\n"
        "movl %%ecx, 8(%%rsi)\n"
        "movl %%edx, 12(%%rsi)\n"
#endif /* SLJIT_CONFIG_X86_32 */
        :
        : "r" (info)
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        : "memory", "eax", "ecx", "edx", "esi"
#else /* !SLJIT_CONFIG_X86_32 */
        : "memory", "rax", "rbx", "rcx", "rdx", "rsi"
#endif /* SLJIT_CONFIG_X86_32 */
    );
 
#else /* _MSC_VER < 1400 */
 
    /* Intel syntax. */
    __asm {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        mov esi, info
        mov eax, [esi]
        mov ecx, [esi + 8]
        cpuid
        mov [esi], eax
        mov [esi + 4], ebx
        mov [esi + 8], ecx
        mov [esi + 12], edx
#else /* !SLJIT_CONFIG_X86_32 */
        mov rsi, info
        mov eax, [rsi]
        mov ecx, [rsi + 8]
        cpuid
        mov [rsi], eax
        mov [rsi + 4], ebx
        mov [rsi + 8], ecx
        mov [rsi + 12], edx
#endif /* SLJIT_CONFIG_X86_32 */
    }
 
#endif /* _MSC_VER && _MSC_VER >= 1400 */
}
 
static sljit_u32 execute_get_xcr0_low(void)
{
    sljit_u32 xcr0;
 
#if defined(_MSC_VER) && _MSC_VER >= 1400
 
    xcr0 = (sljit_u32)_xgetbv(0);
 
#elif defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__TINYC__)
 
    /* AT&T syntax. */
    __asm__ (
        "xorl %%ecx, %%ecx\n"
        "xgetbv\n"
        : "=a" (xcr0)
        :
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        : "ecx", "edx"
#else /* !SLJIT_CONFIG_X86_32 */
        : "rcx", "rdx"
#endif /* SLJIT_CONFIG_X86_32 */
    );
 
#else /* _MSC_VER < 1400 */
 
    /* Intel syntax. */
    __asm {
        mov ecx, 0
        xgetbv
        mov xcr0, eax
    }
 
#endif /* _MSC_VER && _MSC_VER >= 1400 */
    return xcr0;
}
 
static void get_cpu_features(void)
{
    sljit_u32 feature_list = CPU_FEATURE_DETECTED;
    sljit_u32 info[4] = {0};
    sljit_u32 max_id;
 
    execute_cpu_id(info);
    max_id = info[0];
 
    if (max_id >= 7) {
        info[0] = 7;
        info[2] = 0;
        execute_cpu_id(info);
 
        if (info[1] & 0x8)
            feature_list |= CPU_FEATURE_TZCNT;
        if (info[1] & 0x20)
            feature_list |= CPU_FEATURE_AVX2;
    }
 
    if (max_id >= 1) {
        info[0] = 1;
        execute_cpu_id(info);
 
        if (info[2] & 0x80000)
            feature_list |= CPU_FEATURE_SSE41;
        if (info[2] & 0x8000000)
            feature_list |= CPU_FEATURE_OSXSAVE;
        if (info[2] & 0x10000000)
            feature_list |= CPU_FEATURE_AVX;
#if (defined SLJIT_DETECT_SSE2 && SLJIT_DETECT_SSE2)
        if (info[3] & 0x4000000)
            feature_list |= CPU_FEATURE_SSE2;
#endif
        if (info[3] & 0x8000)
            feature_list |= CPU_FEATURE_CMOV;
    }
 
    info[0] = 0x80000001;
    execute_cpu_id(info);
 
    if (info[2] & 0x20)
        feature_list |= CPU_FEATURE_LZCNT;
 
    if ((feature_list & CPU_FEATURE_OSXSAVE) && (execute_get_xcr0_low() & 0x4) == 0)
        feature_list &= ~(sljit_u32)(CPU_FEATURE_AVX | CPU_FEATURE_AVX2);
 
    cpu_feature_list = feature_list;
}
 
static sljit_u8 get_jump_code(sljit_uw type)
{
    switch (type) {
    case SLJIT_EQUAL:
    case SLJIT_ATOMIC_STORED:
    case SLJIT_F_EQUAL:
    case SLJIT_UNORDERED_OR_EQUAL:
        return 0x84 /* je */;
 
    case SLJIT_NOT_EQUAL:
    case SLJIT_ATOMIC_NOT_STORED:
    case SLJIT_F_NOT_EQUAL:
    case SLJIT_ORDERED_NOT_EQUAL:
        return 0x85 /* jne */;
 
    case SLJIT_LESS:
    case SLJIT_CARRY:
    case SLJIT_F_LESS:
    case SLJIT_UNORDERED_OR_LESS:
    case SLJIT_UNORDERED_OR_GREATER:
        return 0x82 /* jc */;
 
    case SLJIT_GREATER_EQUAL:
    case SLJIT_NOT_CARRY:
    case SLJIT_F_GREATER_EQUAL:
    case SLJIT_ORDERED_GREATER_EQUAL:
    case SLJIT_ORDERED_LESS_EQUAL:
        return 0x83 /* jae */;
 
    case SLJIT_GREATER:
    case SLJIT_F_GREATER:
    case SLJIT_ORDERED_LESS:
    case SLJIT_ORDERED_GREATER:
        return 0x87 /* jnbe */;
 
    case SLJIT_LESS_EQUAL:
    case SLJIT_F_LESS_EQUAL:
    case SLJIT_UNORDERED_OR_GREATER_EQUAL:
    case SLJIT_UNORDERED_OR_LESS_EQUAL:
        return 0x86 /* jbe */;
 
    case SLJIT_SIG_LESS:
        return 0x8c /* jl */;
 
    case SLJIT_SIG_GREATER_EQUAL:
        return 0x8d /* jnl */;
 
    case SLJIT_SIG_GREATER:
        return 0x8f /* jnle */;
 
    case SLJIT_SIG_LESS_EQUAL:
        return 0x8e /* jle */;
 
    case SLJIT_OVERFLOW:
        return 0x80 /* jo */;
 
    case SLJIT_NOT_OVERFLOW:
        return 0x81 /* jno */;
 
    case SLJIT_UNORDERED:
    case SLJIT_ORDERED_EQUAL: /* NaN. */
        return 0x8a /* jp */;
 
    case SLJIT_ORDERED:
    case SLJIT_UNORDERED_OR_NOT_EQUAL: /* Not NaN. */
        return 0x8b /* jpo */;
    }
    return 0;
}
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
static sljit_u8* detect_far_jump_type(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_sw executable_offset);
#else /* !SLJIT_CONFIG_X86_32 */
static sljit_u8* detect_far_jump_type(struct sljit_jump *jump, sljit_u8 *code_ptr);
static sljit_u8* generate_mov_addr_code(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_u8 *code, sljit_sw executable_offset);
#endif /* SLJIT_CONFIG_X86_32 */
 
static sljit_u8* detect_near_jump_type(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_u8 *code, sljit_sw executable_offset)
{
    sljit_uw type = jump->flags >> TYPE_SHIFT;
    sljit_s32 short_jump;
    sljit_uw label_addr;
 
    if (jump->flags & JUMP_ADDR)
        label_addr = jump->u.target - (sljit_uw)executable_offset;
    else
        label_addr = (sljit_uw)(code + jump->u.label->size);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if ((sljit_sw)(label_addr - (sljit_uw)(code_ptr + 6)) > HALFWORD_MAX || (sljit_sw)(label_addr - (sljit_uw)(code_ptr + 5)) < HALFWORD_MIN)
        return detect_far_jump_type(jump, code_ptr);
#endif /* SLJIT_CONFIG_X86_64 */
 
    short_jump = (sljit_sw)(label_addr - (sljit_uw)(code_ptr + 2)) >= -0x80 && (sljit_sw)(label_addr - (sljit_uw)(code_ptr + 2)) <= 0x7f;
 
    if (type == SLJIT_JUMP) {
        if (short_jump)
            *code_ptr++ = JMP_i8;
        else
            *code_ptr++ = JMP_i32;
    } else if (type > SLJIT_JUMP) {
        short_jump = 0;
        *code_ptr++ = CALL_i32;
    } else if (short_jump) {
        *code_ptr++ = U8(get_jump_code(type) - 0x10);
    } else {
        *code_ptr++ = GROUP_0F;
        *code_ptr++ = get_jump_code(type);
    }
 
    jump->addr = (sljit_uw)code_ptr;
 
    if (short_jump) {
        jump->flags |= PATCH_MB;
        code_ptr += sizeof(sljit_s8);
    } else {
        jump->flags |= PATCH_MW;
        code_ptr += sizeof(sljit_s32);
    }
 
    return code_ptr;
}
 
static void generate_jump_or_mov_addr(struct sljit_jump *jump, sljit_sw executable_offset)
{
    sljit_uw flags = jump->flags;
    sljit_uw addr = (flags & JUMP_ADDR) ? jump->u.target : jump->u.label->u.addr;
    sljit_uw jump_addr = jump->addr;
    SLJIT_UNUSED_ARG(executable_offset);
 
    if (SLJIT_UNLIKELY(flags & JUMP_MOV_ADDR)) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        sljit_unaligned_store_sw((void*)(jump_addr - sizeof(sljit_sw)), (sljit_sw)addr);
#else /* SLJIT_CONFIG_X86_32 */
        if (flags & PATCH_MD) {
            SLJIT_ASSERT(addr > HALFWORD_MAX);
            sljit_unaligned_store_sw((void*)(jump_addr - sizeof(sljit_sw)), (sljit_sw)addr);
            return;
        }
 
        if (flags & PATCH_MW) {
            addr -= (sljit_uw)SLJIT_ADD_EXEC_OFFSET((sljit_u8*)jump_addr, executable_offset);
            SLJIT_ASSERT((sljit_sw)addr <= HALFWORD_MAX && (sljit_sw)addr >= HALFWORD_MIN);
        } else {
            SLJIT_ASSERT(addr <= HALFWORD_MAX);
        }
        sljit_unaligned_store_s32((void*)(jump_addr - sizeof(sljit_s32)), (sljit_s32)addr);
#endif /* !SLJIT_CONFIG_X86_32 */
        return;
    }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (SLJIT_UNLIKELY(flags & PATCH_MD)) {
        SLJIT_ASSERT(!(flags & JUMP_ADDR));
        sljit_unaligned_store_sw((void*)jump_addr, (sljit_sw)addr);
        return;
    }
#endif /* SLJIT_CONFIG_X86_64 */
 
    addr -= (sljit_uw)SLJIT_ADD_EXEC_OFFSET((sljit_u8*)jump_addr, executable_offset);
 
    if (flags & PATCH_MB) {
        addr -= sizeof(sljit_s8);
        SLJIT_ASSERT((sljit_sw)addr <= 0x7f && (sljit_sw)addr >= -0x80);
        *(sljit_u8*)jump_addr = U8(addr);
        return;
    } else if (flags & PATCH_MW) {
        addr -= sizeof(sljit_s32);
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        sljit_unaligned_store_sw((void*)jump_addr, (sljit_sw)addr);
#else /* !SLJIT_CONFIG_X86_32 */
        SLJIT_ASSERT((sljit_sw)addr <= HALFWORD_MAX && (sljit_sw)addr >= HALFWORD_MIN);
        sljit_unaligned_store_s32((void*)jump_addr, (sljit_s32)addr);
#endif /* SLJIT_CONFIG_X86_32 */
    }
}
 
static void reduce_code_size(struct sljit_compiler *compiler)
{
    struct sljit_label *label;
    struct sljit_jump *jump;
    sljit_uw next_label_size;
    sljit_uw next_jump_addr;
    sljit_uw next_min_addr;
    sljit_uw size_reduce = 0;
    sljit_sw diff;
    sljit_uw type;
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
    sljit_uw size_reduce_max;
#endif /* SLJIT_DEBUG */
 
    label = compiler->labels;
    jump = compiler->jumps;
 
    next_label_size = SLJIT_GET_NEXT_SIZE(label);
    next_jump_addr = SLJIT_GET_NEXT_ADDRESS(jump);
 
    while (1) {
        next_min_addr = next_label_size;
        if (next_jump_addr < next_min_addr)
            next_min_addr = next_jump_addr;
 
        if (next_min_addr == SLJIT_MAX_ADDRESS)
            break;
 
        if (next_min_addr == next_label_size) {
            label->size -= size_reduce;
 
            label = label->next;
            next_label_size = SLJIT_GET_NEXT_SIZE(label);
        }
 
        if (next_min_addr != next_jump_addr)
            continue;
 
        if (!(jump->flags & JUMP_MOV_ADDR)) {
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
            size_reduce_max = size_reduce + (((jump->flags >> TYPE_SHIFT) < SLJIT_JUMP) ? CJUMP_MAX_SIZE : JUMP_MAX_SIZE);
#endif /* SLJIT_DEBUG */
 
            if (!(jump->flags & SLJIT_REWRITABLE_JUMP)) {
                if (jump->flags & JUMP_ADDR) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                    if (jump->u.target <= 0xffffffffl)
                        size_reduce += sizeof(sljit_s32);
#endif /* SLJIT_CONFIG_X86_64 */
                } else {
                    /* Unit size: instruction. */
                    diff = (sljit_sw)jump->u.label->size - (sljit_sw)(jump->addr - size_reduce);
                    type = jump->flags >> TYPE_SHIFT;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                    if (type == SLJIT_JUMP) {
                        if (diff <= 0x7f + 2 && diff >= -0x80 + 2)
                            size_reduce += JUMP_MAX_SIZE - 2;
                        else if (diff <= HALFWORD_MAX + 5 && diff >= HALFWORD_MIN + 5)
                            size_reduce += JUMP_MAX_SIZE - 5;
                    } else if (type < SLJIT_JUMP) {
                        if (diff <= 0x7f + 2 && diff >= -0x80 + 2)
                            size_reduce += CJUMP_MAX_SIZE - 2;
                        else if (diff <= HALFWORD_MAX + 6 && diff >= HALFWORD_MIN + 6)
                            size_reduce += CJUMP_MAX_SIZE - 6;
                    } else  {
                        if (diff <= HALFWORD_MAX + 5 && diff >= HALFWORD_MIN + 5)
                            size_reduce += JUMP_MAX_SIZE - 5;
                    }
#else /* !SLJIT_CONFIG_X86_64 */
                    if (type == SLJIT_JUMP) {
                        if (diff <= 0x7f + 2 && diff >= -0x80 + 2)
                            size_reduce += JUMP_MAX_SIZE - 2;
                    } else if (type < SLJIT_JUMP) {
                        if (diff <= 0x7f + 2 && diff >= -0x80 + 2)
                            size_reduce += CJUMP_MAX_SIZE - 2;
                    }
#endif /* SLJIT_CONFIG_X86_64 */
                }
            }
 
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
            jump->flags |= (size_reduce_max - size_reduce) << JUMP_SIZE_SHIFT;
#endif /* SLJIT_DEBUG */
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        } else {
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
            size_reduce_max = size_reduce + 10;
#endif /* SLJIT_DEBUG */
 
            if (!(jump->flags & JUMP_ADDR)) {
                diff = (sljit_sw)jump->u.label->size - (sljit_sw)(jump->addr - size_reduce - 3);
 
                if (diff <= HALFWORD_MAX && diff >= HALFWORD_MIN)
                    size_reduce += 3;
            } else if (jump->u.target <= 0xffffffffl)
                size_reduce += (jump->flags & MOV_ADDR_HI) ? 4 : 5;
 
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
            jump->flags |= (size_reduce_max - size_reduce) << JUMP_SIZE_SHIFT;
#endif /* SLJIT_DEBUG */
#endif /* SLJIT_CONFIG_X86_64 */
        }
 
        jump = jump->next;
        next_jump_addr = SLJIT_GET_NEXT_ADDRESS(jump);
    }
 
    compiler->size -= size_reduce;
}
 
SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler, sljit_s32 options, void *exec_allocator_data)
{
    struct sljit_memory_fragment *buf;
    sljit_u8 *code;
    sljit_u8 *code_ptr;
    sljit_u8 *buf_ptr;
    sljit_u8 *buf_end;
    sljit_u8 len;
    sljit_sw executable_offset;
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
    sljit_uw addr;
#endif /* SLJIT_DEBUG */
 
    struct sljit_label *label;
    struct sljit_jump *jump;
    struct sljit_const *const_;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_generate_code(compiler));
 
    reduce_code_size(compiler);
 
    /* Second code generation pass. */
    code = (sljit_u8*)allocate_executable_memory(compiler->size, options, exec_allocator_data, &executable_offset);
    PTR_FAIL_WITH_EXEC_IF(code);
 
    reverse_buf(compiler);
    buf = compiler->buf;
 
    code_ptr = code;
    label = compiler->labels;
    jump = compiler->jumps;
    const_ = compiler->consts;
 
    do {
        buf_ptr = buf->memory;
        buf_end = buf_ptr + buf->used_size;
        do {
            len = *buf_ptr++;
            SLJIT_ASSERT(len > 0);
            if (len < SLJIT_INST_CONST) {
                /* The code is already generated. */
                SLJIT_MEMCPY(code_ptr, buf_ptr, len);
                code_ptr += len;
                buf_ptr += len;
            } else {
                switch (len) {
                case SLJIT_INST_LABEL:
                    label->u.addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
                    label->size = (sljit_uw)(code_ptr - code);
                    label = label->next;
                    break;
                case SLJIT_INST_JUMP:
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
                    addr = (sljit_uw)code_ptr;
#endif /* SLJIT_DEBUG */
                    if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
                        code_ptr = detect_near_jump_type(jump, code_ptr, code, executable_offset);
                    else {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
                        code_ptr = detect_far_jump_type(jump, code_ptr, executable_offset);
#else /* !SLJIT_CONFIG_X86_32 */
                        code_ptr = detect_far_jump_type(jump, code_ptr);
#endif /* SLJIT_CONFIG_X86_32 */
                    }
 
                    SLJIT_ASSERT((sljit_uw)code_ptr - addr <= ((jump->flags >> JUMP_SIZE_SHIFT) & 0x1f));
                    jump = jump->next;
                    break;
                case SLJIT_INST_MOV_ADDR:
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                    code_ptr = generate_mov_addr_code(jump, code_ptr, code, executable_offset);
#endif /* SLJIT_CONFIG_X86_64 */
                    jump->addr = (sljit_uw)code_ptr;
                    jump = jump->next;
                    break;
                default:
                    SLJIT_ASSERT(len == SLJIT_INST_CONST);
                    const_->addr = ((sljit_uw)code_ptr) - sizeof(sljit_sw);
                    const_ = const_->next;
                    break;
                }
            }
        } while (buf_ptr < buf_end);
 
        SLJIT_ASSERT(buf_ptr == buf_end);
        buf = buf->next;
    } while (buf);
 
    SLJIT_ASSERT(!label);
    SLJIT_ASSERT(!jump);
    SLJIT_ASSERT(!const_);
    SLJIT_ASSERT(code_ptr <= code + compiler->size);
 
    jump = compiler->jumps;
    while (jump) {
        generate_jump_or_mov_addr(jump, executable_offset);
        jump = jump->next;
    }
 
    compiler->error = SLJIT_ERR_COMPILED;
    compiler->executable_offset = executable_offset;
    compiler->executable_size = (sljit_uw)(code_ptr - code);
 
    code = (sljit_u8*)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
 
    SLJIT_UPDATE_WX_FLAGS(code, (sljit_u8*)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset), 1);
    return (void*)code;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
{
    switch (feature_type) {
    case SLJIT_HAS_FPU:
#ifdef SLJIT_IS_FPU_AVAILABLE
        return (SLJIT_IS_FPU_AVAILABLE) != 0;
#elif (defined SLJIT_DETECT_SSE2 && SLJIT_DETECT_SSE2)
        if (cpu_feature_list == 0)
            get_cpu_features();
        return (cpu_feature_list & CPU_FEATURE_SSE2) != 0;
#else /* SLJIT_DETECT_SSE2 */
        return 1;
#endif /* SLJIT_DETECT_SSE2 */
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    case SLJIT_HAS_VIRTUAL_REGISTERS:
        return 1;
#endif /* SLJIT_CONFIG_X86_32 */
 
    case SLJIT_HAS_CLZ:
        if (cpu_feature_list == 0)
            get_cpu_features();
 
        return (cpu_feature_list & CPU_FEATURE_LZCNT) ? 1 : 2;
 
    case SLJIT_HAS_CTZ:
        if (cpu_feature_list == 0)
            get_cpu_features();
 
        return (cpu_feature_list & CPU_FEATURE_TZCNT) ? 1 : 2;
 
    case SLJIT_HAS_CMOV:
        if (cpu_feature_list == 0)
            get_cpu_features();
        return (cpu_feature_list & CPU_FEATURE_CMOV) != 0;
 
    case SLJIT_HAS_REV:
    case SLJIT_HAS_ROT:
    case SLJIT_HAS_PREFETCH:
    case SLJIT_HAS_COPY_F32:
    case SLJIT_HAS_COPY_F64:
    case SLJIT_HAS_ATOMIC:
        return 1;
 
#if !(defined SLJIT_IS_FPU_AVAILABLE) || SLJIT_IS_FPU_AVAILABLE
    case SLJIT_HAS_AVX:
        if (cpu_feature_list == 0)
            get_cpu_features();
        return (cpu_feature_list & CPU_FEATURE_AVX) != 0;
    case SLJIT_HAS_AVX2:
        if (cpu_feature_list == 0)
            get_cpu_features();
        return (cpu_feature_list & CPU_FEATURE_AVX2) != 0;
    case SLJIT_HAS_SIMD:
        if (cpu_feature_list == 0)
            get_cpu_features();
        return (cpu_feature_list & CPU_FEATURE_SSE41) != 0;
#endif /* SLJIT_IS_FPU_AVAILABLE */
    default:
        return 0;
    }
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_cmp_info(sljit_s32 type)
{
    switch (type) {
    case SLJIT_ORDERED_EQUAL:
    case SLJIT_UNORDERED_OR_NOT_EQUAL:
        return 2;
    }
 
    return 0;
}
 
/* --------------------------------------------------------------------- */
/*  Operators                                                            */
/* --------------------------------------------------------------------- */
 
#define BINARY_OPCODE(opcode) (((opcode ## _EAX_i32) << 24) | ((opcode ## _r_rm) << 16) | ((opcode ## _rm_r) << 8) | (opcode))
 
#define BINARY_IMM32(op_imm, immw, arg, argw) \
    do { \
        inst = emit_x86_instruction(compiler, 1 | EX86_BIN_INS, SLJIT_IMM, immw, arg, argw); \
        FAIL_IF(!inst); \
        *(inst + 1) |= (op_imm); \
    } while (0)
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
 
#define BINARY_IMM(op_imm, op_mr, immw, arg, argw) \
    do { \
        if (IS_HALFWORD(immw) || compiler->mode32) { \
            BINARY_IMM32(op_imm, immw, arg, argw); \
        } \
        else { \
            FAIL_IF(emit_load_imm64(compiler, FAST_IS_REG(arg) ? TMP_REG2 : TMP_REG1, immw)); \
            inst = emit_x86_instruction(compiler, 1, FAST_IS_REG(arg) ? TMP_REG2 : TMP_REG1, 0, arg, argw); \
            FAIL_IF(!inst); \
            *inst = (op_mr); \
        } \
    } while (0)
 
#define BINARY_EAX_IMM(op_eax_imm, immw) \
    FAIL_IF(emit_do_imm32(compiler, (!compiler->mode32) ? REX_W : 0, (op_eax_imm), immw))
 
#else /* !SLJIT_CONFIG_X86_64 */
 
#define BINARY_IMM(op_imm, op_mr, immw, arg, argw) \
    BINARY_IMM32(op_imm, immw, arg, argw)
 
#define BINARY_EAX_IMM(op_eax_imm, immw) \
    FAIL_IF(emit_do_imm(compiler, (op_eax_imm), immw))
 
#endif /* SLJIT_CONFIG_X86_64 */
 
static sljit_s32 emit_byte(struct sljit_compiler *compiler, sljit_u8 byte)
{
    sljit_u8 *inst = (sljit_u8*)ensure_buf(compiler, 1 + 1);
    FAIL_IF(!inst);
    INC_SIZE(1);
    *inst = byte;
    return SLJIT_SUCCESS;
}
 
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));
 
static sljit_s32 emit_groupf(struct sljit_compiler *compiler,
    sljit_uw op,
    sljit_s32 dst, sljit_s32 src, sljit_sw srcw);
 
static sljit_s32 emit_groupf_ext(struct sljit_compiler *compiler,
    sljit_uw op,
    sljit_s32 dst, sljit_s32 src, sljit_sw srcw);
 
static SLJIT_INLINE sljit_s32 emit_sse2_store(struct sljit_compiler *compiler,
    sljit_s32 single, sljit_s32 dst, sljit_sw dstw, sljit_s32 src);
 
static SLJIT_INLINE sljit_s32 emit_sse2_load(struct sljit_compiler *compiler,
    sljit_s32 single, sljit_s32 dst, sljit_s32 src, sljit_sw srcw);
 
static sljit_s32 emit_cmp_binary(struct sljit_compiler *compiler,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w);
 
static sljit_s32 emit_cmov_generic(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_reg,
    sljit_s32 src, sljit_sw srcw);
 
static SLJIT_INLINE sljit_s32 emit_endbranch(struct sljit_compiler *compiler)
{
#if (defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET)
    /* Emit endbr32/endbr64 when CET is enabled.  */
    sljit_u8 *inst;
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
    FAIL_IF(!inst);
    INC_SIZE(4);
    inst[0] = GROUP_F3;
    inst[1] = GROUP_0F;
    inst[2] = 0x1e;
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    inst[3] = 0xfb;
#else /* !SLJIT_CONFIG_X86_32 */
    inst[3] = 0xfa;
#endif /* SLJIT_CONFIG_X86_32 */
#else /* !SLJIT_CONFIG_X86_CET */
    SLJIT_UNUSED_ARG(compiler);
#endif /* SLJIT_CONFIG_X86_CET */
    return SLJIT_SUCCESS;
}
 
#if (defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET) && defined (__SHSTK__)
 
static SLJIT_INLINE sljit_s32 emit_rdssp(struct sljit_compiler *compiler, sljit_s32 reg)
{
    sljit_u8 *inst;
    sljit_s32 size;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    size = 5;
#else
    size = 4;
#endif
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
    FAIL_IF(!inst);
    INC_SIZE(size);
    *inst++ = GROUP_F3;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    *inst++ = REX_W | (reg_map[reg] <= 7 ? 0 : REX_B);
#endif
    inst[0] = GROUP_0F;
    inst[1] = 0x1e;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    inst[2] = U8(MOD_REG | (0x1 << 3) | reg_lmap[reg]);
#else
    inst[2] = U8(MOD_REG | (0x1 << 3) | reg_map[reg]);
#endif
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 emit_incssp(struct sljit_compiler *compiler, sljit_s32 reg)
{
    sljit_u8 *inst;
    sljit_s32 size;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    size = 5;
#else
    size = 4;
#endif
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
    FAIL_IF(!inst);
    INC_SIZE(size);
    *inst++ = GROUP_F3;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    *inst++ = REX_W | (reg_map[reg] <= 7 ? 0 : REX_B);
#endif
    inst[0] = GROUP_0F;
    inst[1] = 0xae;
    inst[2] = (0x3 << 6) | (0x5 << 3) | (reg_map[reg] & 0x7);
    return SLJIT_SUCCESS;
}
 
#endif /* SLJIT_CONFIG_X86_CET && __SHSTK__ */
 
static SLJIT_INLINE sljit_s32 cpu_has_shadow_stack(void)
{
#if (defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET) && defined (__SHSTK__)
    return _get_ssp() != 0;
#else /* !SLJIT_CONFIG_X86_CET || !__SHSTK__ */
    return 0;
#endif /* SLJIT_CONFIG_X86_CET && __SHSTK__ */
}
 
static SLJIT_INLINE sljit_s32 adjust_shadow_stack(struct sljit_compiler *compiler,
    sljit_s32 src, sljit_sw srcw)
{
#if (defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET) && defined (__SHSTK__)
    sljit_u8 *inst, *jz_after_cmp_inst;
    sljit_uw size_jz_after_cmp_inst;
 
    sljit_uw size_before_rdssp_inst = compiler->size;
 
    /* Generate "RDSSP TMP_REG1". */
    FAIL_IF(emit_rdssp(compiler, TMP_REG1));
 
    /* Load return address on shadow stack into TMP_REG1. */
    EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(TMP_REG1), 0);
 
    /* Compare return address against TMP_REG1. */
    FAIL_IF(emit_cmp_binary (compiler, TMP_REG1, 0, src, srcw));
 
    /* Generate JZ to skip shadow stack ajdustment when shadow
       stack matches normal stack. */
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
    FAIL_IF(!inst);
    INC_SIZE(2);
    *inst++ = get_jump_code(SLJIT_EQUAL) - 0x10;
    size_jz_after_cmp_inst = compiler->size;
    jz_after_cmp_inst = inst;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    /* REX_W is not necessary. */
    compiler->mode32 = 1;
#endif
    /* Load 1 into TMP_REG1. */
    EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, 1);
 
    /* Generate "INCSSP TMP_REG1". */
    FAIL_IF(emit_incssp(compiler, TMP_REG1));
 
    /* Jump back to "RDSSP TMP_REG1" to check shadow stack again. */
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
    FAIL_IF(!inst);
    INC_SIZE(2);
    inst[0] = JMP_i8;
    inst[1] = size_before_rdssp_inst - compiler->size;
 
    *jz_after_cmp_inst = compiler->size - size_jz_after_cmp_inst;
#else /* !SLJIT_CONFIG_X86_CET || !__SHSTK__ */
    SLJIT_UNUSED_ARG(compiler);
    SLJIT_UNUSED_ARG(src);
    SLJIT_UNUSED_ARG(srcw);
#endif /* SLJIT_CONFIG_X86_CET && __SHSTK__ */
    return SLJIT_SUCCESS;
}
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
#include "sljitNativeX86_32.c"
#else
#include "sljitNativeX86_64.c"
#endif
 
static sljit_s32 emit_mov(struct sljit_compiler *compiler,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
 
    if (FAST_IS_REG(src)) {
        inst = emit_x86_instruction(compiler, 1, src, 0, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm_r;
        return SLJIT_SUCCESS;
    }
 
    if (src == SLJIT_IMM) {
        if (FAST_IS_REG(dst)) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
            return emit_do_imm(compiler, MOV_r_i32 | reg_map[dst], srcw);
#else
            if (!compiler->mode32) {
                if (NOT_HALFWORD(srcw))
                    return emit_load_imm64(compiler, dst, srcw);
            }
            else
                return emit_do_imm32(compiler, (reg_map[dst] >= 8) ? REX_B : 0, U8(MOV_r_i32 | reg_lmap[dst]), srcw);
#endif
        }
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (!compiler->mode32 && NOT_HALFWORD(srcw)) {
            /* Immediate to memory move. Only SLJIT_MOV operation copies
               an immediate directly into memory so TMP_REG1 can be used. */
            FAIL_IF(emit_load_imm64(compiler, TMP_REG1, srcw));
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst, dstw);
            FAIL_IF(!inst);
            *inst = MOV_rm_r;
            return SLJIT_SUCCESS;
        }
#endif
        inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, srcw, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm_i32;
        return SLJIT_SUCCESS;
    }
    if (FAST_IS_REG(dst)) {
        inst = emit_x86_instruction(compiler, 1, dst, 0, src, srcw);
        FAIL_IF(!inst);
        *inst = MOV_r_rm;
        return SLJIT_SUCCESS;
    }
 
    /* Memory to memory move. Only SLJIT_MOV operation copies
       data from memory to memory so TMP_REG1 can be used. */
    inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src, srcw);
    FAIL_IF(!inst);
    *inst = MOV_r_rm;
    inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst, dstw);
    FAIL_IF(!inst);
    *inst = MOV_rm_r;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_cmov_generic(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_reg,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
    sljit_uw size;
 
    SLJIT_ASSERT(type >= SLJIT_EQUAL && type <= SLJIT_ORDERED_LESS_EQUAL);
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
    FAIL_IF(!inst);
    INC_SIZE(2);
    inst[0] = U8(get_jump_code((sljit_uw)type ^ 0x1) - 0x10);
 
    size = compiler->size;
    EMIT_MOV(compiler, dst_reg, 0, src, srcw);
 
    inst[1] = U8(compiler->size - size);
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
{
    sljit_u8 *inst;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_uw size;
#endif
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op0(compiler, op));
 
    switch (GET_OPCODE(op)) {
    case SLJIT_BREAKPOINT:
        return emit_byte(compiler, INT3);
    case SLJIT_NOP:
        return emit_byte(compiler, NOP);
    case SLJIT_LMUL_UW:
    case SLJIT_LMUL_SW:
    case SLJIT_DIVMOD_UW:
    case SLJIT_DIVMOD_SW:
    case SLJIT_DIV_UW:
    case SLJIT_DIV_SW:
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
#ifdef _WIN64
        SLJIT_ASSERT(
            reg_map[SLJIT_R0] == 0
            && reg_map[SLJIT_R1] == 2
            && reg_map[TMP_REG1] > 7);
#else
        SLJIT_ASSERT(
            reg_map[SLJIT_R0] == 0
            && reg_map[SLJIT_R1] < 7
            && reg_map[TMP_REG1] == 2);
#endif
        compiler->mode32 = op & SLJIT_32;
#endif
        SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
 
        op = GET_OPCODE(op);
        if ((op | 0x2) == SLJIT_DIV_UW) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || defined(_WIN64)
            EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_R1, 0);
            inst = emit_x86_instruction(compiler, 1, SLJIT_R1, 0, SLJIT_R1, 0);
#else
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, TMP_REG1, 0);
#endif
            FAIL_IF(!inst);
            *inst = XOR_r_rm;
        }
 
        if ((op | 0x2) == SLJIT_DIV_SW) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || defined(_WIN64)
            EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_R1, 0);
#endif
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
            FAIL_IF(emit_byte(compiler, CDQ));
#else
            if (!compiler->mode32) {
                inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
                FAIL_IF(!inst);
                INC_SIZE(2);
                inst[0] = REX_W;
                inst[1] = CDQ;
            } else
                FAIL_IF(emit_byte(compiler, CDQ));
#endif
        }
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
        FAIL_IF(!inst);
        INC_SIZE(2);
        inst[0] = GROUP_F7;
        inst[1] = MOD_REG | ((op >= SLJIT_DIVMOD_UW) ? reg_map[TMP_REG1] : reg_map[SLJIT_R1]);
#else /* !SLJIT_CONFIG_X86_32 */
#ifdef _WIN64
        size = (!compiler->mode32 || op >= SLJIT_DIVMOD_UW) ? 3 : 2;
#else /* !_WIN64 */
        size = (!compiler->mode32) ? 3 : 2;
#endif /* _WIN64 */
        inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
        FAIL_IF(!inst);
        INC_SIZE(size);
#ifdef _WIN64
        if (!compiler->mode32)
            *inst++ = REX_W | ((op >= SLJIT_DIVMOD_UW) ? REX_B : 0);
        else if (op >= SLJIT_DIVMOD_UW)
            *inst++ = REX_B;
        inst[0] = GROUP_F7;
        inst[1] = MOD_REG | ((op >= SLJIT_DIVMOD_UW) ? reg_lmap[TMP_REG1] : reg_lmap[SLJIT_R1]);
#else /* !_WIN64 */
        if (!compiler->mode32)
            *inst++ = REX_W;
        inst[0] = GROUP_F7;
        inst[1] = MOD_REG | reg_map[SLJIT_R1];
#endif /* _WIN64 */
#endif /* SLJIT_CONFIG_X86_32 */
        switch (op) {
        case SLJIT_LMUL_UW:
            inst[1] |= MUL;
            break;
        case SLJIT_LMUL_SW:
            inst[1] |= IMUL;
            break;
        case SLJIT_DIVMOD_UW:
        case SLJIT_DIV_UW:
            inst[1] |= DIV;
            break;
        case SLJIT_DIVMOD_SW:
        case SLJIT_DIV_SW:
            inst[1] |= IDIV;
            break;
        }
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) && !defined(_WIN64)
        if (op <= SLJIT_DIVMOD_SW)
            EMIT_MOV(compiler, SLJIT_R1, 0, TMP_REG1, 0);
#else
        if (op >= SLJIT_DIV_UW)
            EMIT_MOV(compiler, SLJIT_R1, 0, TMP_REG1, 0);
#endif
        break;
    case SLJIT_ENDBR:
        return emit_endbranch(compiler);
    case SLJIT_SKIP_FRAMES_BEFORE_RETURN:
        return skip_frames_before_return(compiler);
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_mov_byte(struct sljit_compiler *compiler, sljit_s32 sign,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
    sljit_s32 dst_r;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 0;
#endif
 
    if (src == SLJIT_IMM) {
        if (FAST_IS_REG(dst)) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
            return emit_do_imm(compiler, MOV_r_i32 | reg_map[dst], srcw);
#else
            inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, srcw, dst, 0);
            FAIL_IF(!inst);
            *inst = MOV_rm_i32;
            return SLJIT_SUCCESS;
#endif
        }
        inst = emit_x86_instruction(compiler, 1 | EX86_BYTE_ARG | EX86_NO_REXW, SLJIT_IMM, srcw, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm8_i8;
        return SLJIT_SUCCESS;
    }
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if ((dst & SLJIT_MEM) && FAST_IS_REG(src)) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (reg_map[src] >= 4) {
            SLJIT_ASSERT(dst_r == TMP_REG1);
            EMIT_MOV(compiler, TMP_REG1, 0, src, 0);
        } else
            dst_r = src;
#else
        dst_r = src;
#endif
    } else {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (FAST_IS_REG(src) && reg_map[src] >= 4) {
            /* Both src and dst are registers. */
            SLJIT_ASSERT(FAST_IS_REG(dst));
 
            if (src == dst && !sign) {
                inst = emit_x86_instruction(compiler, 1 | EX86_BIN_INS, SLJIT_IMM, 0xff, dst, 0);
                FAIL_IF(!inst);
                *(inst + 1) |= AND;
                return SLJIT_SUCCESS;
            }
 
            EMIT_MOV(compiler, TMP_REG1, 0, src, 0);
            src = TMP_REG1;
            srcw = 0;
        }
#endif /* !SLJIT_CONFIG_X86_32 */
 
        /* src can be memory addr or reg_map[src] < 4 on x86_32 architectures. */
        FAIL_IF(emit_groupf(compiler, sign ? MOVSX_r_rm8 : MOVZX_r_rm8, dst_r, src, srcw));
    }
 
    if (dst & SLJIT_MEM) {
        inst = emit_x86_instruction(compiler, 1 | EX86_REX | EX86_NO_REXW, dst_r, 0, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm8_r8;
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_prefetch(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif
 
    inst = emit_x86_instruction(compiler, 2, 0, 0, src, srcw);
    FAIL_IF(!inst);
    inst[0] = GROUP_0F;
    inst[1] = PREFETCH;
 
    if (op == SLJIT_PREFETCH_L1)
        inst[2] |= (1 << 3);
    else if (op == SLJIT_PREFETCH_L2)
        inst[2] |= (2 << 3);
    else if (op == SLJIT_PREFETCH_L3)
        inst[2] |= (3 << 3);
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_mov_half(struct sljit_compiler *compiler, sljit_s32 sign,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
    sljit_s32 dst_r;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 0;
#endif
 
    if (src == SLJIT_IMM) {
        if (FAST_IS_REG(dst)) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
            return emit_do_imm(compiler, MOV_r_i32 | reg_map[dst], srcw);
#else
            inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, srcw, dst, 0);
            FAIL_IF(!inst);
            *inst = MOV_rm_i32;
            return SLJIT_SUCCESS;
#endif
        }
        inst = emit_x86_instruction(compiler, 1 | EX86_HALF_ARG | EX86_NO_REXW | EX86_PREF_66, SLJIT_IMM, srcw, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm_i32;
        return SLJIT_SUCCESS;
    }
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if ((dst & SLJIT_MEM) && FAST_IS_REG(src))
        dst_r = src;
    else
        FAIL_IF(emit_groupf(compiler, sign ? MOVSX_r_rm16 : MOVZX_r_rm16, dst_r, src, srcw));
 
    if (dst & SLJIT_MEM) {
        inst = emit_x86_instruction(compiler, 1 | EX86_NO_REXW | EX86_PREF_66, dst_r, 0, dst, dstw);
        FAIL_IF(!inst);
        *inst = MOV_rm_r;
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_unary(struct sljit_compiler *compiler, sljit_u8 opcode,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
 
    if (dst == src && dstw == srcw) {
        /* Same input and output */
        inst = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw);
        FAIL_IF(!inst);
        inst[0] = GROUP_F7;
        inst[1] |= opcode;
        return SLJIT_SUCCESS;
    }
 
    if (FAST_IS_REG(dst)) {
        EMIT_MOV(compiler, dst, 0, src, srcw);
        inst = emit_x86_instruction(compiler, 1, 0, 0, dst, 0);
        FAIL_IF(!inst);
        inst[0] = GROUP_F7;
        inst[1] |= opcode;
        return SLJIT_SUCCESS;
    }
 
    EMIT_MOV(compiler, TMP_REG1, 0, src, srcw);
    inst = emit_x86_instruction(compiler, 1, 0, 0, TMP_REG1, 0);
    FAIL_IF(!inst);
    inst[0] = GROUP_F7;
    inst[1] |= opcode;
    EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
    return SLJIT_SUCCESS;
}
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
static const sljit_sw emit_clz_arg = 32 + 31;
static const sljit_sw emit_ctz_arg = 32;
#endif
 
static sljit_s32 emit_clz_ctz(struct sljit_compiler *compiler, sljit_s32 is_clz,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8* inst;
    sljit_s32 dst_r;
    sljit_sw max;
 
    SLJIT_ASSERT(cpu_feature_list != 0);
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if (is_clz ? (cpu_feature_list & CPU_FEATURE_LZCNT) : (cpu_feature_list & CPU_FEATURE_TZCNT)) {
        FAIL_IF(emit_groupf(compiler, (is_clz ? LZCNT_r_rm : TZCNT_r_rm) | EX86_PREF_F3, dst_r, src, srcw));
 
        if (dst & SLJIT_MEM)
            EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
        return SLJIT_SUCCESS;
    }
 
    FAIL_IF(emit_groupf(compiler, is_clz ? BSR_r_rm : BSF_r_rm, dst_r, src, srcw));
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    max = is_clz ? (32 + 31) : 32;
 
    if (cpu_feature_list & CPU_FEATURE_CMOV) {
        if (dst_r != TMP_REG1) {
            EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, max);
            inst = emit_x86_instruction(compiler, 2, dst_r, 0, TMP_REG1, 0);
        }
        else
            inst = emit_x86_instruction(compiler, 2, dst_r, 0, SLJIT_MEM0(), is_clz ? (sljit_sw)&emit_clz_arg : (sljit_sw)&emit_ctz_arg);
 
        FAIL_IF(!inst);
        inst[0] = GROUP_0F;
        inst[1] = CMOVE_r_rm;
    }
    else
        FAIL_IF(emit_cmov_generic(compiler, SLJIT_EQUAL, dst_r, SLJIT_IMM, max));
 
    if (is_clz) {
        inst = emit_x86_instruction(compiler, 1 | EX86_BIN_INS, SLJIT_IMM, 31, dst_r, 0);
        FAIL_IF(!inst);
        *(inst + 1) |= XOR;
    }
#else
    if (is_clz)
        max = compiler->mode32 ? (32 + 31) : (64 + 63);
    else
        max = compiler->mode32 ? 32 : 64;
 
    if (cpu_feature_list & CPU_FEATURE_CMOV) {
        EMIT_MOV(compiler, TMP_REG2, 0, SLJIT_IMM, max);
        FAIL_IF(emit_groupf(compiler, CMOVE_r_rm, dst_r, TMP_REG2, 0));
    } else
        FAIL_IF(emit_cmov_generic(compiler, SLJIT_EQUAL, dst_r, SLJIT_IMM, max));
 
    if (is_clz) {
        inst = emit_x86_instruction(compiler, 1 | EX86_BIN_INS, SLJIT_IMM, max >> 1, dst_r, 0);
        FAIL_IF(!inst);
        *(inst + 1) |= XOR;
    }
#endif
 
    if (dst & SLJIT_MEM)
        EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_bswap(struct sljit_compiler *compiler,
    sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_u8 *inst;
    sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
    sljit_uw size;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_u8 rex = 0;
#else /* !SLJIT_CONFIG_X86_64 */
    sljit_s32 dst_is_ereg = op & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (op == SLJIT_REV_U32 || op == SLJIT_REV_S32)
        compiler->mode32 = 1;
#else /* !SLJIT_CONFIG_X86_64 */
    op &= ~SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (src != dst_r) {
        /* Only the lower 16 bit is read for eregs. */
        if (op == SLJIT_REV_U16 || op == SLJIT_REV_S16)
            FAIL_IF(emit_mov_half(compiler, 0, dst_r, 0, src, srcw));
        else
            EMIT_MOV(compiler, dst_r, 0, src, srcw);
    }
 
    size = 2;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (!compiler->mode32)
        rex = REX_W;
 
    if (reg_map[dst_r] >= 8)
        rex |= REX_B;
 
    if (rex != 0)
        size++;
#endif /* SLJIT_CONFIG_X86_64 */
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
    FAIL_IF(!inst);
    INC_SIZE(size);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (rex != 0)
        *inst++ = rex;
 
    inst[0] = GROUP_0F;
    inst[1] = BSWAP_r | reg_lmap[dst_r];
#else /* !SLJIT_CONFIG_X86_64 */
    inst[0] = GROUP_0F;
    inst[1] = BSWAP_r | reg_map[dst_r];
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (op == SLJIT_REV_U16 || op == SLJIT_REV_S16) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        size = compiler->mode32 ? 16 : 48;
#else /* !SLJIT_CONFIG_X86_64 */
        size = 16;
#endif /* SLJIT_CONFIG_X86_64 */
 
        inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, SLJIT_IMM, (sljit_sw)size, dst_r, 0);
        FAIL_IF(!inst);
        if (op == SLJIT_REV_U16)
            inst[1] |= SHR;
        else
            inst[1] |= SAR;
    }
 
    if (dst & SLJIT_MEM) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (dst_is_ereg)
            op = SLJIT_REV;
#endif /* SLJIT_CONFIG_X86_32 */
        if (op == SLJIT_REV_U16 || op == SLJIT_REV_S16)
            return emit_mov_half(compiler, 0, dst, dstw, TMP_REG1, 0);
 
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
    }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (op == SLJIT_REV_S32) {
        compiler->mode32 = 0;
        inst = emit_x86_instruction(compiler, 1, dst, 0, dst, 0);
        FAIL_IF(!inst);
        *inst = MOVSXD_r_rm;
    }
#endif /* SLJIT_CONFIG_X86_64 */
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_s32 dst_is_ereg = 0;
#else /* !SLJIT_CONFIG_X86_32 */
    sljit_s32 op_flags = GET_ALL_FLAGS(op);
#endif /* SLJIT_CONFIG_X86_32 */
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    CHECK_EXTRA_REGS(dst, dstw, dst_is_ereg = 1);
    CHECK_EXTRA_REGS(src, srcw, (void)0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op_flags & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
 
    op = GET_OPCODE(op);
 
    if (op >= SLJIT_MOV && op <= SLJIT_MOV_P) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = 0;
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (FAST_IS_REG(src) && src == dst) {
            if (!TYPE_CAST_NEEDED(op))
                return SLJIT_SUCCESS;
        }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (op_flags & SLJIT_32) {
            if (src & SLJIT_MEM) {
                if (op == SLJIT_MOV_S32)
                    op = SLJIT_MOV_U32;
            }
            else if (src == SLJIT_IMM) {
                if (op == SLJIT_MOV_U32)
                    op = SLJIT_MOV_S32;
            }
        }
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (src == SLJIT_IMM) {
            switch (op) {
            case SLJIT_MOV_U8:
                srcw = (sljit_u8)srcw;
                break;
            case SLJIT_MOV_S8:
                srcw = (sljit_s8)srcw;
                break;
            case SLJIT_MOV_U16:
                srcw = (sljit_u16)srcw;
                break;
            case SLJIT_MOV_S16:
                srcw = (sljit_s16)srcw;
                break;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            case SLJIT_MOV_U32:
                srcw = (sljit_u32)srcw;
                break;
            case SLJIT_MOV_S32:
                srcw = (sljit_s32)srcw;
                break;
#endif /* SLJIT_CONFIG_X86_64 */
            }
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
            if (SLJIT_UNLIKELY(dst_is_ereg))
                return emit_mov(compiler, dst, dstw, src, srcw);
#endif /* SLJIT_CONFIG_X86_32 */
        }
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (SLJIT_UNLIKELY(dst_is_ereg) && (!(op == SLJIT_MOV || op == SLJIT_MOV_U32 || op == SLJIT_MOV_S32 || op == SLJIT_MOV_P) || (src & SLJIT_MEM))) {
            SLJIT_ASSERT(dst == SLJIT_MEM1(SLJIT_SP));
            dst = TMP_REG1;
        }
#endif /* SLJIT_CONFIG_X86_32 */
 
        switch (op) {
        case SLJIT_MOV:
        case SLJIT_MOV_P:
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        case SLJIT_MOV_U32:
        case SLJIT_MOV_S32:
        case SLJIT_MOV32:
#endif /* SLJIT_CONFIG_X86_32 */
            EMIT_MOV(compiler, dst, dstw, src, srcw);
            break;
        case SLJIT_MOV_U8:
            FAIL_IF(emit_mov_byte(compiler, 0, dst, dstw, src, srcw));
            break;
        case SLJIT_MOV_S8:
            FAIL_IF(emit_mov_byte(compiler, 1, dst, dstw, src, srcw));
            break;
        case SLJIT_MOV_U16:
            FAIL_IF(emit_mov_half(compiler, 0, dst, dstw, src, srcw));
            break;
        case SLJIT_MOV_S16:
            FAIL_IF(emit_mov_half(compiler, 1, dst, dstw, src, srcw));
            break;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        case SLJIT_MOV_U32:
            FAIL_IF(emit_mov_int(compiler, 0, dst, dstw, src, srcw));
            break;
        case SLJIT_MOV_S32:
            FAIL_IF(emit_mov_int(compiler, 1, dst, dstw, src, srcw));
            break;
        case SLJIT_MOV32:
            compiler->mode32 = 1;
            EMIT_MOV(compiler, dst, dstw, src, srcw);
            compiler->mode32 = 0;
            break;
#endif /* SLJIT_CONFIG_X86_64 */
        }
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (SLJIT_UNLIKELY(dst_is_ereg) && dst == TMP_REG1)
            return emit_mov(compiler, SLJIT_MEM1(SLJIT_SP), dstw, TMP_REG1, 0);
#endif /* SLJIT_CONFIG_X86_32 */
        return SLJIT_SUCCESS;
    }
 
    switch (op) {
    case SLJIT_CLZ:
    case SLJIT_CTZ:
        return emit_clz_ctz(compiler, (op == SLJIT_CLZ), dst, dstw, src, srcw);
    case SLJIT_REV:
    case SLJIT_REV_U16:
    case SLJIT_REV_S16:
    case SLJIT_REV_U32:
    case SLJIT_REV_S32:
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (dst_is_ereg)
            op |= SLJIT_32;
#endif /* SLJIT_CONFIG_X86_32 */
        return emit_bswap(compiler, op, dst, dstw, src, srcw);
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_cum_binary(struct sljit_compiler *compiler,
    sljit_u32 op_types,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
    sljit_u8 op_eax_imm = U8(op_types >> 24);
    sljit_u8 op_rm = U8((op_types >> 16) & 0xff);
    sljit_u8 op_mr = U8((op_types >> 8) & 0xff);
    sljit_u8 op_imm = U8(op_types & 0xff);
 
    if (dst == src1 && dstw == src1w) {
        if (src2 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if ((dst == SLJIT_R0) && (src2w > 127 || src2w < -128) && (compiler->mode32 || IS_HALFWORD(src2w))) {
#else
            if ((dst == SLJIT_R0) && (src2w > 127 || src2w < -128)) {
#endif
                BINARY_EAX_IMM(op_eax_imm, src2w);
            }
            else {
                BINARY_IMM(op_imm, op_mr, src2w, dst, dstw);
            }
        }
        else if (FAST_IS_REG(dst)) {
            inst = emit_x86_instruction(compiler, 1, dst, dstw, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
        else if (FAST_IS_REG(src2)) {
            /* Special exception for sljit_emit_op_flags. */
            inst = emit_x86_instruction(compiler, 1, src2, src2w, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        else {
            EMIT_MOV(compiler, TMP_REG1, 0, src2, src2w);
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        return SLJIT_SUCCESS;
    }
 
    /* Only for cumulative operations. */
    if (dst == src2 && dstw == src2w) {
        if (src1 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if ((dst == SLJIT_R0) && (src1w > 127 || src1w < -128) && (compiler->mode32 || IS_HALFWORD(src1w))) {
#else
            if ((dst == SLJIT_R0) && (src1w > 127 || src1w < -128)) {
#endif
                BINARY_EAX_IMM(op_eax_imm, src1w);
            }
            else {
                BINARY_IMM(op_imm, op_mr, src1w, dst, dstw);
            }
        }
        else if (FAST_IS_REG(dst)) {
            inst = emit_x86_instruction(compiler, 1, dst, dstw, src1, src1w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
        else if (FAST_IS_REG(src1)) {
            inst = emit_x86_instruction(compiler, 1, src1, src1w, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        else {
            EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        return SLJIT_SUCCESS;
    }
 
    /* General version. */
    if (FAST_IS_REG(dst)) {
        EMIT_MOV(compiler, dst, 0, src1, src1w);
        if (src2 == SLJIT_IMM) {
            BINARY_IMM(op_imm, op_mr, src2w, dst, 0);
        }
        else {
            inst = emit_x86_instruction(compiler, 1, dst, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
    }
    else {
        /* This version requires less memory writing. */
        EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
        if (src2 == SLJIT_IMM) {
            BINARY_IMM(op_imm, op_mr, src2w, TMP_REG1, 0);
        }
        else {
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
        EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_non_cum_binary(struct sljit_compiler *compiler,
    sljit_u32 op_types,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
    sljit_u8 op_eax_imm = U8(op_types >> 24);
    sljit_u8 op_rm = U8((op_types >> 16) & 0xff);
    sljit_u8 op_mr = U8((op_types >> 8) & 0xff);
    sljit_u8 op_imm = U8(op_types & 0xff);
 
    if (dst == src1 && dstw == src1w) {
        if (src2 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if ((dst == SLJIT_R0) && (src2w > 127 || src2w < -128) && (compiler->mode32 || IS_HALFWORD(src2w))) {
#else
            if ((dst == SLJIT_R0) && (src2w > 127 || src2w < -128)) {
#endif
                BINARY_EAX_IMM(op_eax_imm, src2w);
            }
            else {
                BINARY_IMM(op_imm, op_mr, src2w, dst, dstw);
            }
        }
        else if (FAST_IS_REG(dst)) {
            inst = emit_x86_instruction(compiler, 1, dst, dstw, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
        else if (FAST_IS_REG(src2)) {
            inst = emit_x86_instruction(compiler, 1, src2, src2w, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        else {
            EMIT_MOV(compiler, TMP_REG1, 0, src2, src2w);
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst, dstw);
            FAIL_IF(!inst);
            *inst = op_mr;
        }
        return SLJIT_SUCCESS;
    }
 
    /* General version. */
    if (FAST_IS_REG(dst) && dst != src2) {
        EMIT_MOV(compiler, dst, 0, src1, src1w);
        if (src2 == SLJIT_IMM) {
            BINARY_IMM(op_imm, op_mr, src2w, dst, 0);
        }
        else {
            inst = emit_x86_instruction(compiler, 1, dst, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
    }
    else {
        /* This version requires less memory writing. */
        EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
        if (src2 == SLJIT_IMM) {
            BINARY_IMM(op_imm, op_mr, src2w, TMP_REG1, 0);
        }
        else {
            inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = op_rm;
        }
        EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_mul(struct sljit_compiler *compiler,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
    sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    /* Register destination. */
    if (dst_r == src1 && src2 != SLJIT_IMM) {
        FAIL_IF(emit_groupf(compiler, IMUL_r_rm, dst_r, src2, src2w));
    } else if (dst_r == src2 && src1 != SLJIT_IMM) {
        FAIL_IF(emit_groupf(compiler, IMUL_r_rm, dst_r, src1, src1w));
    } else if (src1 == SLJIT_IMM) {
        if (src2 == SLJIT_IMM) {
            EMIT_MOV(compiler, dst_r, 0, SLJIT_IMM, src2w);
            src2 = dst_r;
            src2w = 0;
        }
 
        if (src1w <= 127 && src1w >= -128) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i8;
 
            FAIL_IF(emit_byte(compiler, U8(src1w)));
        }
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        else {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i32;
            inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
            FAIL_IF(!inst);
            INC_SIZE(4);
            sljit_unaligned_store_sw(inst, src1w);
        }
#else
        else if (IS_HALFWORD(src1w)) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i32;
            inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
            FAIL_IF(!inst);
            INC_SIZE(4);
            sljit_unaligned_store_s32(inst, (sljit_s32)src1w);
        }
        else {
            if (dst_r != src2)
                EMIT_MOV(compiler, dst_r, 0, src2, src2w);
            FAIL_IF(emit_load_imm64(compiler, TMP_REG2, src1w));
            FAIL_IF(emit_groupf(compiler, IMUL_r_rm, dst_r, TMP_REG2, 0));
        }
#endif
    }
    else if (src2 == SLJIT_IMM) {
        /* Note: src1 is NOT immediate. */
 
        if (src2w <= 127 && src2w >= -128) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src1, src1w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i8;
 
            FAIL_IF(emit_byte(compiler, U8(src2w)));
        }
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        else {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src1, src1w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i32;
 
            inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
            FAIL_IF(!inst);
            INC_SIZE(4);
            sljit_unaligned_store_sw(inst, src2w);
        }
#else
        else if (IS_HALFWORD(src2w)) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, src1, src1w);
            FAIL_IF(!inst);
            *inst = IMUL_r_rm_i32;
 
            inst = (sljit_u8*)ensure_buf(compiler, 1 + 4);
            FAIL_IF(!inst);
            INC_SIZE(4);
            sljit_unaligned_store_s32(inst, (sljit_s32)src2w);
        } else {
            if (dst_r != src1)
                EMIT_MOV(compiler, dst_r, 0, src1, src1w);
            FAIL_IF(emit_load_imm64(compiler, TMP_REG2, src2w));
            FAIL_IF(emit_groupf(compiler, IMUL_r_rm, dst_r, TMP_REG2, 0));
        }
#endif
    } else {
        /* Neither argument is immediate. */
        if (ADDRESSING_DEPENDS_ON(src2, dst_r))
            dst_r = TMP_REG1;
        EMIT_MOV(compiler, dst_r, 0, src1, src1w);
        FAIL_IF(emit_groupf(compiler, IMUL_r_rm, dst_r, src2, src2w));
    }
 
    if (dst & SLJIT_MEM)
        EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_lea_binary(struct sljit_compiler *compiler,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
    sljit_s32 dst_r, done = 0;
 
    /* These cases better be left to handled by normal way. */
    if (dst == src1 && dstw == src1w)
        return SLJIT_ERR_UNSUPPORTED;
    if (dst == src2 && dstw == src2w)
        return SLJIT_ERR_UNSUPPORTED;
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if (FAST_IS_REG(src1)) {
        if (FAST_IS_REG(src2)) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, SLJIT_MEM2(src1, src2), 0);
            FAIL_IF(!inst);
            *inst = LEA_r_m;
            done = 1;
        }
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (src2 == SLJIT_IMM && (compiler->mode32 || IS_HALFWORD(src2w))) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, SLJIT_MEM1(src1), (sljit_s32)src2w);
#else
        if (src2 == SLJIT_IMM) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, SLJIT_MEM1(src1), src2w);
#endif
            FAIL_IF(!inst);
            *inst = LEA_r_m;
            done = 1;
        }
    }
    else if (FAST_IS_REG(src2)) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (src1 == SLJIT_IMM && (compiler->mode32 || IS_HALFWORD(src1w))) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, SLJIT_MEM1(src2), (sljit_s32)src1w);
#else
        if (src1 == SLJIT_IMM) {
            inst = emit_x86_instruction(compiler, 1, dst_r, 0, SLJIT_MEM1(src2), src1w);
#endif
            FAIL_IF(!inst);
            *inst = LEA_r_m;
            done = 1;
        }
    }
 
    if (done) {
        if (dst_r == TMP_REG1)
            return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
        return SLJIT_SUCCESS;
    }
    return SLJIT_ERR_UNSUPPORTED;
}
 
static sljit_s32 emit_cmp_binary(struct sljit_compiler *compiler,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (src1 == SLJIT_R0 && src2 == SLJIT_IMM && (src2w > 127 || src2w < -128) && (compiler->mode32 || IS_HALFWORD(src2w))) {
#else
    if (src1 == SLJIT_R0 && src2 == SLJIT_IMM && (src2w > 127 || src2w < -128)) {
#endif
        BINARY_EAX_IMM(CMP_EAX_i32, src2w);
        return SLJIT_SUCCESS;
    }
 
    if (FAST_IS_REG(src1)) {
        if (src2 == SLJIT_IMM) {
            BINARY_IMM(CMP, CMP_rm_r, src2w, src1, 0);
        }
        else {
            inst = emit_x86_instruction(compiler, 1, src1, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = CMP_r_rm;
        }
        return SLJIT_SUCCESS;
    }
 
    if (FAST_IS_REG(src2) && src1 != SLJIT_IMM) {
        inst = emit_x86_instruction(compiler, 1, src2, 0, src1, src1w);
        FAIL_IF(!inst);
        *inst = CMP_rm_r;
        return SLJIT_SUCCESS;
    }
 
    if (src2 == SLJIT_IMM) {
        if (src1 == SLJIT_IMM) {
            EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
            src1 = TMP_REG1;
            src1w = 0;
        }
        BINARY_IMM(CMP, CMP_rm_r, src2w, src1, src1w);
    }
    else {
        EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
        inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src2, src2w);
        FAIL_IF(!inst);
        *inst = CMP_r_rm;
    }
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_test_binary(struct sljit_compiler *compiler,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (src1 == SLJIT_R0 && src2 == SLJIT_IMM && (src2w > 127 || src2w < -128) && (compiler->mode32 || IS_HALFWORD(src2w))) {
#else
    if (src1 == SLJIT_R0 && src2 == SLJIT_IMM && (src2w > 127 || src2w < -128)) {
#endif
        BINARY_EAX_IMM(TEST_EAX_i32, src2w);
        return SLJIT_SUCCESS;
    }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    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
        BINARY_EAX_IMM(TEST_EAX_i32, src1w);
        return SLJIT_SUCCESS;
    }
 
    if (src1 != SLJIT_IMM) {
        if (src2 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if (IS_HALFWORD(src2w) || compiler->mode32) {
                inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, src2w, src1, src1w);
                FAIL_IF(!inst);
                *inst = GROUP_F7;
            } else {
                FAIL_IF(emit_load_imm64(compiler, FAST_IS_REG(src1) ? TMP_REG2 : TMP_REG1, src2w));
                inst = emit_x86_instruction(compiler, 1, FAST_IS_REG(src1) ? TMP_REG2 : TMP_REG1, 0, src1, src1w);
                FAIL_IF(!inst);
                *inst = TEST_rm_r;
            }
#else
            inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, src2w, src1, src1w);
            FAIL_IF(!inst);
            *inst = GROUP_F7;
#endif
            return SLJIT_SUCCESS;
        }
        else if (FAST_IS_REG(src1)) {
            inst = emit_x86_instruction(compiler, 1, src1, 0, src2, src2w);
            FAIL_IF(!inst);
            *inst = TEST_rm_r;
            return SLJIT_SUCCESS;
        }
    }
 
    if (src2 != SLJIT_IMM) {
        if (src1 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if (IS_HALFWORD(src1w) || compiler->mode32) {
                inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, src1w, src2, src2w);
                FAIL_IF(!inst);
                *inst = GROUP_F7;
            }
            else {
                FAIL_IF(emit_load_imm64(compiler, TMP_REG1, src1w));
                inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src2, src2w);
                FAIL_IF(!inst);
                *inst = TEST_rm_r;
            }
#else
            inst = emit_x86_instruction(compiler, 1, src1, src1w, src2, src2w);
            FAIL_IF(!inst);
            *inst = GROUP_F7;
#endif
            return SLJIT_SUCCESS;
        }
        else if (FAST_IS_REG(src2)) {
            inst = emit_x86_instruction(compiler, 1, src2, 0, src1, src1w);
            FAIL_IF(!inst);
            *inst = TEST_rm_r;
            return SLJIT_SUCCESS;
        }
    }
 
    EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
    if (src2 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (IS_HALFWORD(src2w) || compiler->mode32) {
            inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, src2w, TMP_REG1, 0);
            FAIL_IF(!inst);
            *inst = GROUP_F7;
        }
        else {
            FAIL_IF(emit_load_imm64(compiler, TMP_REG2, src2w));
            inst = emit_x86_instruction(compiler, 1, TMP_REG2, 0, TMP_REG1, 0);
            FAIL_IF(!inst);
            *inst = TEST_rm_r;
        }
#else
        inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, src2w, TMP_REG1, 0);
        FAIL_IF(!inst);
        *inst = GROUP_F7;
#endif
    }
    else {
        inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, src2, src2w);
        FAIL_IF(!inst);
        *inst = TEST_rm_r;
    }
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_shift(struct sljit_compiler *compiler,
    sljit_u8 mode,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_s32 mode32;
#endif
    sljit_u8* inst;
 
    if (src2 == SLJIT_IMM || src2 == SLJIT_PREF_SHIFT_REG) {
        if (dst == src1 && dstw == src1w) {
            inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, src2, src2w, dst, dstw);
            FAIL_IF(!inst);
            inst[1] |= mode;
            return SLJIT_SUCCESS;
        }
        if (dst == SLJIT_PREF_SHIFT_REG && src2 == SLJIT_PREF_SHIFT_REG) {
            EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
            inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
            FAIL_IF(!inst);
            inst[1] |= mode;
            EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
            return SLJIT_SUCCESS;
        }
        if (FAST_IS_REG(dst)) {
            EMIT_MOV(compiler, dst, 0, src1, src1w);
            inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, src2, src2w, dst, 0);
            FAIL_IF(!inst);
            inst[1] |= mode;
            return SLJIT_SUCCESS;
        }
 
        EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
        inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, src2, src2w, TMP_REG1, 0);
        FAIL_IF(!inst);
        inst[1] |= mode;
        EMIT_MOV(compiler, dst, dstw, TMP_REG1, 0);
        return SLJIT_SUCCESS;
    }
 
    if (dst == SLJIT_PREF_SHIFT_REG) {
        EMIT_MOV(compiler, TMP_REG1, 0, src1, src1w);
        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);
        FAIL_IF(!inst);
        inst[1] |= mode;
        return emit_mov(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
    }
 
    if (FAST_IS_REG(dst) && dst != src2 && dst != TMP_REG1 && !ADDRESSING_DEPENDS_ON(src2, dst)) {
        if (src1 != dst)
            EMIT_MOV(compiler, dst, 0, src1, src1w);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        mode32 = compiler->mode32;
        compiler->mode32 = 0;
#endif
        EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_PREF_SHIFT_REG, 0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = mode32;
#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, dst, 0);
        FAIL_IF(!inst);
        inst[1] |= mode;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = 0;
#endif
        EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = mode32;
#endif
        return SLJIT_SUCCESS;
    }
 
    /* 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_32 && SLJIT_CONFIG_X86_32)
    EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_PREF_SHIFT_REG, 0);
#else /* !SLJIT_CONFIG_X86_32 */
    mode32 = compiler->mode32;
    compiler->mode32 = 0;
    EMIT_MOV(compiler, TMP_REG2, 0, SLJIT_PREF_SHIFT_REG, 0);
    compiler->mode32 = mode32;
#endif /* SLJIT_CONFIG_X86_32 */
 
    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);
    FAIL_IF(!inst);
    inst[1] |= mode;
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, SLJIT_MEM1(SLJIT_SP), 0);
#else
    compiler->mode32 = 0;
    EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG2, 0);
    compiler->mode32 = mode32;
#endif /* SLJIT_CONFIG_X86_32 */
 
    if (dst != TMP_REG1)
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_shift_with_flags(struct sljit_compiler *compiler,
    sljit_u8 mode, sljit_s32 set_flags,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    /* The CPU does not set flags if the shift count is 0. */
    if (src2 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        src2w &= compiler->mode32 ? 0x1f : 0x3f;
#else /* !SLJIT_CONFIG_X86_64 */
        src2w &= 0x1f;
#endif /* SLJIT_CONFIG_X86_64 */
        if (src2w != 0)
            return emit_shift(compiler, mode, dst, dstw, src1, src1w, src2, src2w);
 
        if (!set_flags)
            return emit_mov(compiler, dst, dstw, src1, src1w);
        /* OR dst, src, 0 */
        return emit_cum_binary(compiler, BINARY_OPCODE(OR),
            dst, dstw, src1, src1w, SLJIT_IMM, 0);
    }
 
    if (!set_flags)
        return emit_shift(compiler, mode, dst, dstw, src1, src1w, src2, src2w);
 
    if (!FAST_IS_REG(dst))
        FAIL_IF(emit_cmp_binary(compiler, src1, src1w, SLJIT_IMM, 0));
 
    FAIL_IF(emit_shift(compiler, mode, dst, dstw, src1, src1w, src2, src2w));
 
    if (FAST_IS_REG(dst))
        return emit_cmp_binary(compiler, dst, dstw, SLJIT_IMM, 0);
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
    CHECK_EXTRA_REGS(src1, src1w, (void)0);
    CHECK_EXTRA_REGS(src2, src2w, (void)0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op & SLJIT_32;
#endif
 
    switch (GET_OPCODE(op)) {
    case SLJIT_ADD:
        if (!HAS_FLAGS(op)) {
            if (emit_lea_binary(compiler, dst, dstw, src1, src1w, src2, src2w) != SLJIT_ERR_UNSUPPORTED)
                return compiler->error;
        }
        return emit_cum_binary(compiler, BINARY_OPCODE(ADD),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_ADDC:
        return emit_cum_binary(compiler, BINARY_OPCODE(ADC),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_SUB:
        if (src1 == SLJIT_IMM && src1w == 0)
            return emit_unary(compiler, NEG_rm, dst, dstw, src2, src2w);
 
        if (!HAS_FLAGS(op)) {
            if (src2 == SLJIT_IMM && emit_lea_binary(compiler, dst, dstw, src1, src1w, SLJIT_IMM, -src2w) != SLJIT_ERR_UNSUPPORTED)
                return compiler->error;
            if (FAST_IS_REG(dst) && src2 == dst) {
                FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), dst, 0, dst, 0, src1, src1w));
                return emit_unary(compiler, NEG_rm, dst, 0, dst, 0);
            }
        }
 
        return emit_non_cum_binary(compiler, BINARY_OPCODE(SUB),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_SUBC:
        return emit_non_cum_binary(compiler, BINARY_OPCODE(SBB),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_MUL:
        return emit_mul(compiler, dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_AND:
        return emit_cum_binary(compiler, BINARY_OPCODE(AND),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_OR:
        return emit_cum_binary(compiler, BINARY_OPCODE(OR),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_XOR:
        if (!HAS_FLAGS(op)) {
            if (src2 == SLJIT_IMM && src2w == -1)
                return emit_unary(compiler, NOT_rm, dst, dstw, src1, src1w);
            if (src1 == SLJIT_IMM && src1w == -1)
                return emit_unary(compiler, NOT_rm, dst, dstw, src2, src2w);
        }
 
        return emit_cum_binary(compiler, BINARY_OPCODE(XOR),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_SHL:
    case SLJIT_MSHL:
        return emit_shift_with_flags(compiler, SHL, HAS_FLAGS(op),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_LSHR:
    case SLJIT_MLSHR:
        return emit_shift_with_flags(compiler, SHR, HAS_FLAGS(op),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_ASHR:
    case SLJIT_MASHR:
        return emit_shift_with_flags(compiler, SAR, HAS_FLAGS(op),
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_ROTL:
        return emit_shift_with_flags(compiler, ROL, 0,
            dst, dstw, src1, src1w, src2, src2w);
    case SLJIT_ROTR:
        return emit_shift_with_flags(compiler, ROR, 0,
            dst, dstw, src1, src1w, src2, src2w);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2u(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_s32 opcode = GET_OPCODE(op);
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2(compiler, op, 1, 0, 0, src1, src1w, src2, src2w));
 
    if (opcode != SLJIT_SUB && opcode != SLJIT_AND) {
        SLJIT_SKIP_CHECKS(compiler);
        return sljit_emit_op2(compiler, op, TMP_REG1, 0, src1, src1w, src2, src2w);
    }
 
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    CHECK_EXTRA_REGS(src1, src1w, (void)0);
    CHECK_EXTRA_REGS(src2, src2w, (void)0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op & SLJIT_32;
#endif
 
    if (opcode == SLJIT_SUB)
        return emit_cmp_binary(compiler, src1, src1w, src2, src2w);
 
    return emit_test_binary(compiler, src1, src1w, src2, src2w);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2r(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_u8* inst;
    sljit_sw dstw = 0;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2r(compiler, op, dst_reg, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    CHECK_EXTRA_REGS(dst_reg, dstw, (void)0);
    CHECK_EXTRA_REGS(src1, src1w, (void)0);
    CHECK_EXTRA_REGS(src2, src2w, (void)0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op & SLJIT_32;
#endif
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MULADD:
        FAIL_IF(emit_mul(compiler, TMP_REG1, 0, src1, src1w, src2, src2w));
        inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, dst_reg, dstw);
        FAIL_IF(!inst);
        *inst = ADD_rm_r;
        return SLJIT_SUCCESS;
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_shift_into(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 src1_reg,
    sljit_s32 src2_reg,
    sljit_s32 src3, sljit_sw src3w)
{
    sljit_s32 is_rotate, is_left, move_src1;
    sljit_u8* inst;
    sljit_sw src1w = 0;
    sljit_sw dstw = 0;
    /* The whole register must be saved even for 32 bit operations. */
    sljit_u8 restore_ecx = 0;
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_sw src2w = 0;
    sljit_s32 restore_sp4 = 0;
#endif /* SLJIT_CONFIG_X86_32 */
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_shift_into(compiler, op, dst_reg, src1_reg, src2_reg, src3, src3w));
    ADJUST_LOCAL_OFFSET(src3, src3w);
 
    CHECK_EXTRA_REGS(dst_reg, dstw, (void)0);
    CHECK_EXTRA_REGS(src3, src3w, (void)0);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (src3 == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        src3w &= 0x1f;
#else /* !SLJIT_CONFIG_X86_32 */
        src3w &= (op & SLJIT_32) ? 0x1f : 0x3f;
#endif /* SLJIT_CONFIG_X86_32 */
 
        if (src3w == 0)
            return SLJIT_SUCCESS;
    }
 
    is_left = (GET_OPCODE(op) == SLJIT_SHL || GET_OPCODE(op) == SLJIT_MSHL);
 
    is_rotate = (src1_reg == src2_reg);
    CHECK_EXTRA_REGS(src1_reg, src1w, (void)0);
    CHECK_EXTRA_REGS(src2_reg, src2w, (void)0);
 
    if (is_rotate)
        return emit_shift(compiler, is_left ? ROL : ROR, dst_reg, dstw, src1_reg, src1w, src3, src3w);
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    if (src2_reg & SLJIT_MEM) {
        EMIT_MOV(compiler, TMP_REG1, 0, src2_reg, src2w);
        src2_reg = TMP_REG1;
    }
#endif /* SLJIT_CONFIG_X86_32 */
 
    if (dst_reg == SLJIT_PREF_SHIFT_REG && src3 != SLJIT_IMM && (src3 != SLJIT_PREF_SHIFT_REG || src1_reg != SLJIT_PREF_SHIFT_REG)) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        EMIT_MOV(compiler, TMP_REG1, 0, src1_reg, src1w);
        src1_reg = TMP_REG1;
        src1w = 0;
#else /* !SLJIT_CONFIG_X86_64 */
        if (src2_reg != TMP_REG1) {
            EMIT_MOV(compiler, TMP_REG1, 0, src1_reg, src1w);
            src1_reg = TMP_REG1;
            src1w = 0;
        } else if ((src1_reg & SLJIT_MEM) || src1_reg == SLJIT_PREF_SHIFT_REG) {
            restore_sp4 = (src3 == SLJIT_R0) ? SLJIT_R1 : SLJIT_R0;
            EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_s32), restore_sp4, 0);
            EMIT_MOV(compiler, restore_sp4, 0, src1_reg, src1w);
            src1_reg = restore_sp4;
            src1w = 0;
        } else {
            EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_s32), src1_reg, 0);
            restore_sp4 = src1_reg;
        }
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (src3 != SLJIT_PREF_SHIFT_REG)
            EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, src3, src3w);
    } else {
        if (src2_reg == SLJIT_PREF_SHIFT_REG && src3 != SLJIT_IMM && src3 != SLJIT_PREF_SHIFT_REG) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            compiler->mode32 = 0;
#endif /* SLJIT_CONFIG_X86_64 */
            EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_PREF_SHIFT_REG, 0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            compiler->mode32 = op & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
            src2_reg = TMP_REG1;
            restore_ecx = 1;
        }
 
        move_src1 = 0;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (dst_reg != src1_reg) {
            if (dst_reg != src3) {
                EMIT_MOV(compiler, dst_reg, 0, src1_reg, src1w);
                src1_reg = dst_reg;
                src1w = 0;
            } else
                move_src1 = 1;
        }
#else /* !SLJIT_CONFIG_X86_64 */
        if (dst_reg & SLJIT_MEM) {
            if (src2_reg != TMP_REG1) {
                EMIT_MOV(compiler, TMP_REG1, 0, src1_reg, src1w);
                src1_reg = TMP_REG1;
                src1w = 0;
            } else if ((src1_reg & SLJIT_MEM) || src1_reg == SLJIT_PREF_SHIFT_REG) {
                restore_sp4 = (src3 == SLJIT_R0) ? SLJIT_R1 : SLJIT_R0;
                EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_s32), restore_sp4, 0);
                EMIT_MOV(compiler, restore_sp4, 0, src1_reg, src1w);
                src1_reg = restore_sp4;
                src1w = 0;
            } else {
                EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_s32), src1_reg, 0);
                restore_sp4 = src1_reg;
            }
        } else if (dst_reg != src1_reg) {
            if (dst_reg != src3) {
                EMIT_MOV(compiler, dst_reg, 0, src1_reg, src1w);
                src1_reg = dst_reg;
                src1w = 0;
            } else
                move_src1 = 1;
        }
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (src3 != SLJIT_IMM && src3 != SLJIT_PREF_SHIFT_REG) {
            if (!restore_ecx) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                compiler->mode32 = 0;
                EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_PREF_SHIFT_REG, 0);
                compiler->mode32 = op & SLJIT_32;
                restore_ecx = 1;
#else /* !SLJIT_CONFIG_X86_64 */
                if (src1_reg != TMP_REG1 && src2_reg != TMP_REG1) {
                    EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_PREF_SHIFT_REG, 0);
                    restore_ecx = 1;
                } else {
                    EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_PREF_SHIFT_REG, 0);
                    restore_ecx = 2;
                }
#endif /* SLJIT_CONFIG_X86_64 */
            }
            EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, src3, src3w);
        }
 
        if (move_src1) {
            EMIT_MOV(compiler, dst_reg, 0, src1_reg, src1w);
            src1_reg = dst_reg;
            src1w = 0;
        }
    }
 
    inst = emit_x86_instruction(compiler, 2, src2_reg, 0, src1_reg, src1w);
    FAIL_IF(!inst);
    inst[0] = GROUP_0F;
 
    if (src3 == SLJIT_IMM) {
        inst[1] = U8((is_left ? SHLD : SHRD) - 1);
 
        /* Immediate argument is added separately. */
        FAIL_IF(emit_byte(compiler, U8(src3w)));
    } else
        inst[1] = U8(is_left ? SHLD : SHRD);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (restore_ecx) {
        compiler->mode32 = 0;
        EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, TMP_REG1, 0);
    }
 
    if (src1_reg != dst_reg) {
        compiler->mode32 = op & SLJIT_32;
        return emit_mov(compiler, dst_reg, dstw, src1_reg, 0);
    }
#else /* !SLJIT_CONFIG_X86_64 */
    if (restore_ecx)
        EMIT_MOV(compiler, SLJIT_PREF_SHIFT_REG, 0, restore_ecx == 1 ? TMP_REG1 : SLJIT_MEM1(SLJIT_SP), 0);
 
    if (src1_reg != dst_reg)
        EMIT_MOV(compiler, dst_reg, dstw, src1_reg, 0);
 
    if (restore_sp4)
        return emit_mov(compiler, restore_sp4, 0, SLJIT_MEM1(SLJIT_SP), sizeof(sljit_s32));
#endif /* SLJIT_CONFIG_X86_32 */
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src, sljit_sw srcw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_src(compiler, op, src, srcw));
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    CHECK_EXTRA_REGS(src, srcw, (void)0);
 
    switch (op) {
    case SLJIT_FAST_RETURN:
        return emit_fast_return(compiler, src, srcw);
    case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN:
        /* Don't adjust shadow stack if it isn't enabled.  */
        if (!cpu_has_shadow_stack ())
            return SLJIT_SUCCESS;
        return adjust_shadow_stack(compiler, src, srcw);
    case SLJIT_PREFETCH_L1:
    case SLJIT_PREFETCH_L2:
    case SLJIT_PREFETCH_L3:
    case SLJIT_PREFETCH_ONCE:
        return emit_prefetch(compiler, op, src, srcw);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_dst(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_dst(compiler, op, dst, dstw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
 
    switch (op) {
    case SLJIT_FAST_ENTER:
        return emit_fast_enter(compiler, dst, dstw);
    case SLJIT_GET_RETURN_ADDRESS:
        return sljit_emit_get_return_address(compiler, dst, dstw);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 type, sljit_s32 reg)
{
    CHECK_REG_INDEX(check_sljit_get_register_index(type, reg));
 
    if (type == SLJIT_GP_REGISTER) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (reg >= SLJIT_R3 && reg <= SLJIT_R8)
            return -1;
#endif /* SLJIT_CONFIG_X86_32 */
        return reg_map[reg];
    }
 
    if (type != SLJIT_FLOAT_REGISTER && type != SLJIT_SIMD_REG_128 && type != SLJIT_SIMD_REG_256 && type != SLJIT_SIMD_REG_512)
        return -1;
 
    return freg_map[reg];
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
    void *instruction, sljit_u32 size)
{
    sljit_u8 *inst;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
    FAIL_IF(!inst);
    INC_SIZE(size);
    SLJIT_MEMCPY(inst, instruction, size);
    return SLJIT_SUCCESS;
}
 
/* --------------------------------------------------------------------- */
/*  Floating point operators                                             */
/* --------------------------------------------------------------------- */
 
/* Alignment(3) + 4 * 16 bytes. */
static sljit_u32 sse2_data[3 + (4 * 4)];
static sljit_u32 *sse2_buffer;
 
static void init_compiler(void)
{
    get_cpu_features();
 
    /* Align to 16 bytes. */
    sse2_buffer = (sljit_u32*)(((sljit_uw)sse2_data + 15) & ~(sljit_uw)0xf);
 
    /* Single precision constants (each constant is 16 byte long). */
    sse2_buffer[0] = 0x80000000;
    sse2_buffer[4] = 0x7fffffff;
    /* Double precision constants (each constant is 16 byte long). */
    sse2_buffer[8] = 0;
    sse2_buffer[9] = 0x80000000;
    sse2_buffer[12] = 0xffffffff;
    sse2_buffer[13] = 0x7fffffff;
}
 
static sljit_s32 emit_groupf(struct sljit_compiler *compiler,
    sljit_uw op,
    sljit_s32 dst, sljit_s32 src, sljit_sw srcw)
{
    sljit_u8 *inst = emit_x86_instruction(compiler, 2 | (op & ~(sljit_uw)0xff), dst, 0, src, srcw);
    FAIL_IF(!inst);
    inst[0] = GROUP_0F;
    inst[1] = op & 0xff;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_groupf_ext(struct sljit_compiler *compiler,
    sljit_uw op,
    sljit_s32 dst, sljit_s32 src, sljit_sw srcw)
{
    sljit_u8 *inst;
 
    SLJIT_ASSERT((op & EX86_SSE2) && ((op & VEX_OP_0F38) || (op & VEX_OP_0F3A)));
 
    inst = emit_x86_instruction(compiler, 3 | (op & ~((sljit_uw)0xff | VEX_OP_0F38 | VEX_OP_0F3A)), dst, 0, src, srcw);
    FAIL_IF(!inst);
    inst[0] = GROUP_0F;
    inst[1] = U8((op & VEX_OP_0F38) ? 0x38 : 0x3A);
    inst[2] = op & 0xff;
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 emit_sse2_load(struct sljit_compiler *compiler,
    sljit_s32 single, sljit_s32 dst, sljit_s32 src, sljit_sw srcw)
{
    return emit_groupf(compiler, MOVSD_x_xm | (single ? EX86_PREF_F3 : EX86_PREF_F2) | EX86_SSE2, dst, src, srcw);
}
 
static SLJIT_INLINE sljit_s32 emit_sse2_store(struct sljit_compiler *compiler,
    sljit_s32 single, sljit_s32 dst, sljit_sw dstw, sljit_s32 src)
{
    return emit_groupf(compiler, MOVSD_xm_x | (single ? EX86_PREF_F3 : EX86_PREF_F2) | EX86_SSE2, src, dst, dstw);
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 dst_r;
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (GET_OPCODE(op) == SLJIT_CONV_SW_FROM_F64)
        compiler->mode32 = 0;
#endif
 
    FAIL_IF(emit_groupf(compiler, CVTTSD2SI_r_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2_OP2, dst_r, src, srcw));
 
    if (dst & SLJIT_MEM)
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG;
 
    CHECK_EXTRA_REGS(src, srcw, (void)0);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_SW)
        compiler->mode32 = 0;
#endif
 
    if (src == SLJIT_IMM) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
            srcw = (sljit_s32)srcw;
#endif
        EMIT_MOV(compiler, TMP_REG1, 0, src, srcw);
        src = TMP_REG1;
        srcw = 0;
    }
 
    FAIL_IF(emit_groupf(compiler, CVTSI2SD_x_rm | EX86_SELECT_F2_F3(op) | EX86_SSE2_OP1, dst_r, src, srcw));
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif
    if (dst_r == TMP_FREG)
        return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    switch (GET_FLAG_TYPE(op)) {
    case SLJIT_ORDERED_EQUAL:
        /* Also: SLJIT_UNORDERED_OR_NOT_EQUAL */
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src1, src1w));
        FAIL_IF(emit_groupf(compiler, CMPS_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, TMP_FREG, src2, src2w));
 
        /* EQ */
        FAIL_IF(emit_byte(compiler, 0));
 
        src1 = TMP_FREG;
        src2 = TMP_FREG;
        src2w = 0;
        break;
 
    case SLJIT_ORDERED_LESS:
    case SLJIT_UNORDERED_OR_GREATER:
        /* Also: SLJIT_UNORDERED_OR_GREATER_EQUAL, SLJIT_ORDERED_LESS_EQUAL  */
        if (!FAST_IS_REG(src2)) {
            FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src2, src2w));
            src2 = TMP_FREG;
        }
 
        return emit_groupf(compiler, UCOMISD_x_xm | EX86_SELECT_66(op) | EX86_SSE2, src2, src1, src1w);
    }
 
    if (!FAST_IS_REG(src1)) {
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src1, src1w));
        src1 = TMP_FREG;
    }
 
    return emit_groupf(compiler, UCOMISD_x_xm | EX86_SELECT_66(op) | EX86_SSE2, src1, src2, src2w);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 dst_r;
    sljit_u8 *inst;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif
 
    CHECK_ERROR();
    SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
 
    if (GET_OPCODE(op) == SLJIT_MOV_F64) {
        if (FAST_IS_REG(dst))
            return emit_sse2_load(compiler, op & SLJIT_32, dst, src, srcw);
        if (FAST_IS_REG(src))
            return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, src);
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src, srcw));
        return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
    }
 
    if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32) {
        dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG;
        if (FAST_IS_REG(src)) {
            /* We overwrite the high bits of source. From SLJIT point of view,
               this is not an issue.
               Note: In SSE3, we could also use MOVDDUP and MOVSLDUP. */
            FAIL_IF(emit_groupf(compiler, UNPCKLPD_x_xm | ((op & SLJIT_32) ? EX86_PREF_66 : 0) | EX86_SSE2, src, src, 0));
        } else {
            FAIL_IF(emit_sse2_load(compiler, !(op & SLJIT_32), TMP_FREG, src, srcw));
            src = TMP_FREG;
        }
 
        FAIL_IF(emit_groupf(compiler, CVTPD2PS_x_xm | ((op & SLJIT_32) ? EX86_PREF_66 : 0) | EX86_SSE2, dst_r, src, 0));
        if (dst_r == TMP_FREG)
            return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
        return SLJIT_SUCCESS;
    }
 
    if (FAST_IS_REG(dst)) {
        dst_r = (dst == src) ? TMP_FREG : dst;
 
        if (src & SLJIT_MEM)
            FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src, srcw));
 
        FAIL_IF(emit_groupf(compiler, PCMPEQD_x_xm | EX86_PREF_66 | EX86_SSE2, dst_r, dst_r, 0));
 
        inst = emit_x86_instruction(compiler, 2 | EX86_PREF_66 | EX86_SSE2_OP2, 0, 0, dst_r, 0);
        inst[0] = GROUP_0F;
        /* Same as PSRLD_x / PSRLQ_x */
        inst[1] = (op & SLJIT_32) ? PSLLD_x_i8 : PSLLQ_x_i8;
 
        if (GET_OPCODE(op) == SLJIT_ABS_F64) {
            inst[2] |= 2 << 3;
            FAIL_IF(emit_byte(compiler, 1));
        } else {
            inst[2] |= 6 << 3;
            FAIL_IF(emit_byte(compiler, ((op & SLJIT_32) ? 31 : 63)));
        }
 
        if (dst_r != TMP_FREG)
            dst_r = (src & SLJIT_MEM) ? TMP_FREG : src;
        return emit_groupf(compiler, (GET_OPCODE(op) == SLJIT_NEG_F64 ? XORPD_x_xm : ANDPD_x_xm) | EX86_SSE2, dst, dst_r, 0);
    }
 
    FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src, srcw));
 
    switch (GET_OPCODE(op)) {
    case SLJIT_NEG_F64:
        FAIL_IF(emit_groupf(compiler, XORPD_x_xm | EX86_SELECT_66(op) | EX86_SSE2, TMP_FREG, SLJIT_MEM0(), (sljit_sw)((op & SLJIT_32) ? sse2_buffer : sse2_buffer + 8)));
        break;
 
    case SLJIT_ABS_F64:
        FAIL_IF(emit_groupf(compiler, ANDPD_x_xm | EX86_SELECT_66(op) | EX86_SSE2, TMP_FREG, SLJIT_MEM0(), (sljit_sw)((op & SLJIT_32) ? sse2_buffer + 4 : sse2_buffer + 12)));
        break;
    }
 
    return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_s32 dst_r;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif
 
    if (FAST_IS_REG(dst)) {
        dst_r = dst;
        if (dst == src1)
            ; /* Do nothing here. */
        else if (dst == src2 && (GET_OPCODE(op) == SLJIT_ADD_F64 || GET_OPCODE(op) == SLJIT_MUL_F64)) {
            /* Swap arguments. */
            src2 = src1;
            src2w = src1w;
        } else if (dst != src2)
            FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, dst_r, src1, src1w));
        else {
            dst_r = TMP_FREG;
            FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src1, src1w));
        }
    } else {
        dst_r = TMP_FREG;
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src1, src1w));
    }
 
    switch (GET_OPCODE(op)) {
    case SLJIT_ADD_F64:
        FAIL_IF(emit_groupf(compiler, ADDSD_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, dst_r, src2, src2w));
        break;
 
    case SLJIT_SUB_F64:
        FAIL_IF(emit_groupf(compiler, SUBSD_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, dst_r, src2, src2w));
        break;
 
    case SLJIT_MUL_F64:
        FAIL_IF(emit_groupf(compiler, MULSD_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, dst_r, src2, src2w));
        break;
 
    case SLJIT_DIV_F64:
        FAIL_IF(emit_groupf(compiler, DIVSD_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, dst_r, src2, src2w));
        break;
    }
 
    if (dst_r != dst)
        return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2r(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_freg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_uw pref;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fop2r(compiler, op, dst_freg, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif
 
    if (dst_freg == src1) {
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src2, src2w));
        pref = EX86_SELECT_66(op) | EX86_SSE2;
        FAIL_IF(emit_groupf(compiler, XORPD_x_xm | pref, TMP_FREG, src1, src1w));
        FAIL_IF(emit_groupf(compiler, ANDPD_x_xm | pref, TMP_FREG, SLJIT_MEM0(), (sljit_sw)((op & SLJIT_32) ? sse2_buffer : sse2_buffer + 8)));
        return emit_groupf(compiler, XORPD_x_xm | pref, dst_freg, TMP_FREG, 0);
    }
 
    if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, TMP_FREG, src1, src1w));
        src1 = TMP_FREG;
        src1w = 0;
    }
 
    if (dst_freg != src2)
        FAIL_IF(emit_sse2_load(compiler, op & SLJIT_32, dst_freg, src2, src2w));
 
    pref = EX86_SELECT_66(op) | EX86_SSE2;
    FAIL_IF(emit_groupf(compiler, XORPD_x_xm | pref, dst_freg, src1, src1w));
    FAIL_IF(emit_groupf(compiler, ANDPD_x_xm | pref, dst_freg, SLJIT_MEM0(), (sljit_sw)((op & SLJIT_32) ? sse2_buffer : sse2_buffer + 8)));
    return emit_groupf(compiler, XORPD_x_xm | pref, dst_freg, src1, src1w);
}
 
/* --------------------------------------------------------------------- */
/*  Conditional instructions                                             */
/* --------------------------------------------------------------------- */
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
{
    sljit_u8 *inst;
    struct sljit_label *label;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_label(compiler));
 
    if (compiler->last_label && compiler->last_label->size == compiler->size)
        return compiler->last_label;
 
    label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
    PTR_FAIL_IF(!label);
    set_label(label, compiler);
 
    inst = (sljit_u8*)ensure_buf(compiler, 1);
    PTR_FAIL_IF(!inst);
    inst[0] = SLJIT_INST_LABEL;
 
    return label;
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
{
    sljit_u8 *inst;
    struct sljit_jump *jump;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_jump(compiler, type));
 
    jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
    PTR_FAIL_IF_NULL(jump);
    set_jump(jump, compiler, (sljit_u32)((type & SLJIT_REWRITABLE_JUMP) | ((type & 0xff) << TYPE_SHIFT)));
    type &= 0xff;
 
    jump->addr = compiler->size;
    /* Worst case size. */
    compiler->size += (type >= SLJIT_JUMP) ? JUMP_MAX_SIZE : CJUMP_MAX_SIZE;
    inst = (sljit_u8*)ensure_buf(compiler, 1);
    PTR_FAIL_IF_NULL(inst);
 
    inst[0] = SLJIT_INST_JUMP;
    return jump;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
{
    sljit_u8 *inst;
    struct sljit_jump *jump;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    CHECK_EXTRA_REGS(src, srcw, (void)0);
 
    if (src == SLJIT_IMM) {
        jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
        FAIL_IF_NULL(jump);
        set_jump(jump, compiler, (sljit_u32)(JUMP_ADDR | (type << TYPE_SHIFT)));
        jump->u.target = (sljit_uw)srcw;
 
        jump->addr = compiler->size;
        /* Worst case size. */
        compiler->size += JUMP_MAX_SIZE;
        inst = (sljit_u8*)ensure_buf(compiler, 1);
        FAIL_IF_NULL(inst);
 
        inst[0] = SLJIT_INST_JUMP;
    } else {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        /* REX_W is not necessary (src is not immediate). */
        compiler->mode32 = 1;
#endif
        inst = emit_x86_instruction(compiler, 1, 0, 0, src, srcw);
        FAIL_IF(!inst);
        inst[0] = GROUP_FF;
        inst[1] = U8(inst[1] | ((type >= SLJIT_FAST_CALL) ? CALL_rm : JMP_rm));
    }
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 type)
{
    sljit_u8 *inst;
    sljit_u8 cond_set;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_s32 reg;
#endif /* !SLJIT_CONFIG_X86_64 */
    /* ADJUST_LOCAL_OFFSET and CHECK_EXTRA_REGS might overwrite these values. */
    sljit_s32 dst_save = dst;
    sljit_sw dstw_save = dstw;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
 
    ADJUST_LOCAL_OFFSET(dst, dstw);
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
 
    /* setcc = jcc + 0x10. */
    cond_set = U8(get_jump_code((sljit_uw)type) + 0x10);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (GET_OPCODE(op) == SLJIT_OR && !GET_ALL_FLAGS(op) && FAST_IS_REG(dst)) {
        inst = (sljit_u8*)ensure_buf(compiler, 1 + 4 + 3);
        FAIL_IF(!inst);
        INC_SIZE(4 + 3);
        /* Set low register to conditional flag. */
        inst[0] = (reg_map[TMP_REG1] <= 7) ? REX : REX_B;
        inst[1] = GROUP_0F;
        inst[2] = cond_set;
        inst[3] = MOD_REG | reg_lmap[TMP_REG1];
        inst[4] = U8(REX | (reg_map[TMP_REG1] <= 7 ? 0 : REX_R) | (reg_map[dst] <= 7 ? 0 : REX_B));
        inst[5] = OR_rm8_r8;
        inst[6] = U8(MOD_REG | (reg_lmap[TMP_REG1] << 3) | reg_lmap[dst]);
        return SLJIT_SUCCESS;
    }
 
    reg = (GET_OPCODE(op) < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG1;
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 4 + 4);
    FAIL_IF(!inst);
    INC_SIZE(4 + 4);
    /* Set low register to conditional flag. */
    inst[0] = (reg_map[reg] <= 7) ? REX : REX_B;
    inst[1] = GROUP_0F;
    inst[2] = cond_set;
    inst[3] = MOD_REG | reg_lmap[reg];
    inst[4] = REX_W | (reg_map[reg] <= 7 ? 0 : (REX_B | REX_R));
    /* The movzx instruction does not affect flags. */
    inst[5] = GROUP_0F;
    inst[6] = MOVZX_r_rm8;
    inst[7] = U8(MOD_REG | (reg_lmap[reg] << 3) | reg_lmap[reg]);
 
    if (reg != TMP_REG1)
        return SLJIT_SUCCESS;
 
    if (GET_OPCODE(op) < SLJIT_ADD) {
        compiler->mode32 = GET_OPCODE(op) != SLJIT_MOV;
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
    }
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_op2(compiler, op, dst_save, dstw_save, dst_save, dstw_save, TMP_REG1, 0);
 
#else /* !SLJIT_CONFIG_X86_64 */
    SLJIT_ASSERT(reg_map[TMP_REG1] < 4);
 
    /* The SLJIT_CONFIG_X86_32 code path starts here. */
    if (GET_OPCODE(op) < SLJIT_ADD && FAST_IS_REG(dst) && reg_map[dst] <= 4) {
        /* Low byte is accessible. */
        inst = (sljit_u8*)ensure_buf(compiler, 1 + 3 + 3);
        FAIL_IF(!inst);
        INC_SIZE(3 + 3);
        /* Set low byte to conditional flag. */
        inst[0] = GROUP_0F;
        inst[1] = cond_set;
        inst[2] = U8(MOD_REG | reg_map[dst]);
 
        inst[3] = GROUP_0F;
        inst[4] = MOVZX_r_rm8;
        inst[5] = U8(MOD_REG | (reg_map[dst] << 3) | reg_map[dst]);
        return SLJIT_SUCCESS;
    }
 
    if (GET_OPCODE(op) == SLJIT_OR && !GET_ALL_FLAGS(op) && FAST_IS_REG(dst) && reg_map[dst] <= 4) {
        inst = (sljit_u8*)ensure_buf(compiler, 1 + 3 + 2);
        FAIL_IF(!inst);
        INC_SIZE(3 + 2);
 
        /* Set low byte to conditional flag. */
        inst[0] = GROUP_0F;
        inst[1] = cond_set;
        inst[2] = U8(MOD_REG | reg_map[TMP_REG1]);
 
        inst[3] = OR_rm8_r8;
        inst[4] = U8(MOD_REG | (reg_map[TMP_REG1] << 3) | reg_map[dst]);
        return SLJIT_SUCCESS;
    }
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 3 + 3);
    FAIL_IF(!inst);
    INC_SIZE(3 + 3);
    /* Set low byte to conditional flag. */
    inst[0] = GROUP_0F;
    inst[1] = cond_set;
    inst[2] = U8(MOD_REG | reg_map[TMP_REG1]);
 
    inst[3] = GROUP_0F;
    inst[4] = MOVZX_r_rm8;
    inst[5] = U8(MOD_REG | (reg_map[TMP_REG1] << 3) | reg_map[TMP_REG1]);
 
    if (GET_OPCODE(op) < SLJIT_ADD)
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_op2(compiler, op, dst_save, dstw_save, dst_save, dstw_save, TMP_REG1, 0);
#endif /* SLJIT_CONFIG_X86_64 */
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fselect(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_freg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2_freg)
{
    sljit_u8* inst;
    sljit_uw size;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fselect(compiler, type, dst_freg, src1, src1w, src2_freg));
 
    ADJUST_LOCAL_OFFSET(src1, src1w);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (dst_freg != src2_freg) {
        if (dst_freg == src1) {
            src1 = src2_freg;
            src1w = 0;
            type ^= 0x1;
        } else
            FAIL_IF(emit_sse2_load(compiler, type & SLJIT_32, dst_freg, src2_freg, 0));
    }
 
    inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
    FAIL_IF(!inst);
    INC_SIZE(2);
    inst[0] = U8(get_jump_code((sljit_uw)(type & ~SLJIT_32) ^ 0x1) - 0x10);
 
    size = compiler->size;
    FAIL_IF(emit_sse2_load(compiler, type & SLJIT_32, dst_freg, src1, src1w));
 
    inst[1] = U8(compiler->size - size);
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_mov(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 srcdst, sljit_sw srcdstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 alignment = SLJIT_SIMD_GET_ELEM2_SIZE(type);
    sljit_uw op;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_mov(compiler, type, freg, srcdst, srcdstw));
 
    ADJUST_LOCAL_OFFSET(srcdst, srcdstw);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
 
    switch (reg_size) {
    case 4:
        op = EX86_SSE2;
        break;
    case 5:
        if (!(cpu_feature_list & CPU_FEATURE_AVX2))
            return SLJIT_ERR_UNSUPPORTED;
        op = EX86_SSE2 | VEX_256;
        break;
    default:
        return SLJIT_ERR_UNSUPPORTED;
    }
 
    if (!(srcdst & SLJIT_MEM))
        alignment = reg_size;
 
    if (type & SLJIT_SIMD_FLOAT) {
        if (elem_size == 2 || elem_size == 3) {
            op |= alignment >= reg_size ? MOVAPS_x_xm : MOVUPS_x_xm;
 
            if (elem_size == 3)
                op |= EX86_PREF_66;
 
            if (type & SLJIT_SIMD_STORE)
                op += 1;
        } else
            return SLJIT_ERR_UNSUPPORTED;
    } else {
        op |= ((type & SLJIT_SIMD_STORE) ? MOVDQA_xm_x : MOVDQA_x_xm)
            | (alignment >= reg_size ? EX86_PREF_66 : EX86_PREF_F3);
    }
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if ((op & VEX_256) || ((cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX)))
        return emit_vex_instruction(compiler, op, freg, 0, srcdst, srcdstw);
 
    return emit_groupf(compiler, op, freg, srcdst, srcdstw);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_replicate(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 use_vex = (cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX);
    sljit_u8 *inst;
    sljit_u8 opcode = 0;
    sljit_uw op;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_replicate(compiler, type, freg, src, srcw));
 
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    if (!(type & SLJIT_SIMD_FLOAT)) {
        CHECK_EXTRA_REGS(src, srcw, (void)0);
    }
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : (elem_size > 2))
        return SLJIT_ERR_UNSUPPORTED;
#else /* !SLJIT_CONFIG_X86_32 */
    compiler->mode32 = 1;
 
    if (elem_size > 3 || ((type & SLJIT_SIMD_FLOAT) && elem_size < 2))
        return SLJIT_ERR_UNSUPPORTED;
#endif /* SLJIT_CONFIG_X86_32 */
 
    if (reg_size != 4 && (reg_size != 5 || !(cpu_feature_list & CPU_FEATURE_AVX2)))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 5)
        use_vex = 1;
 
    if (use_vex && src != SLJIT_IMM) {
        op = 0;
 
        switch (elem_size) {
        case 0:
            if (cpu_feature_list & CPU_FEATURE_AVX2)
                op = VPBROADCASTB_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        case 1:
            if (cpu_feature_list & CPU_FEATURE_AVX2)
                op = VPBROADCASTW_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        case 2:
            if (type & SLJIT_SIMD_FLOAT) {
                if ((cpu_feature_list & CPU_FEATURE_AVX2) || ((cpu_feature_list & CPU_FEATURE_AVX) && (src & SLJIT_MEM)))
                    op = VBROADCASTSS_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            } else if (cpu_feature_list & CPU_FEATURE_AVX2)
                op = VPBROADCASTD_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        default:
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
            if (!(type & SLJIT_SIMD_FLOAT)) {
                if (cpu_feature_list & CPU_FEATURE_AVX2)
                    op = VPBROADCASTQ_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
                break;
            }
#endif /* SLJIT_CONFIG_X86_64 */
 
            if (reg_size == 5)
                op = VBROADCASTSD_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        }
 
        if (op != 0) {
            if (!(src & SLJIT_MEM) && !(type & SLJIT_SIMD_FLOAT)) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                if (elem_size >= 3)
                    compiler->mode32 = 0;
#endif /* SLJIT_CONFIG_X86_64 */
                FAIL_IF(emit_vex_instruction(compiler, MOVD_x_rm | VEX_AUTO_W | EX86_PREF_66 | EX86_SSE2_OP1, freg, 0, src, srcw));
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
                src = freg;
                srcw = 0;
            }
 
            if (reg_size == 5)
                op |= VEX_256;
 
            return emit_vex_instruction(compiler, op, freg, 0, src, srcw);
        }
    }
 
    if (type & SLJIT_SIMD_FLOAT) {
        if (src == SLJIT_IMM) {
            if (use_vex)
                return emit_vex_instruction(compiler, XORPD_x_xm | (reg_size == 5 ? VEX_256 : 0) | (elem_size == 3 ? EX86_PREF_66 : 0) | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, freg, 0);
 
            return emit_groupf(compiler, XORPD_x_xm | (elem_size == 3 ? EX86_PREF_66 : 0) | EX86_SSE2, freg, freg, 0);
        }
 
        SLJIT_ASSERT(reg_size == 4);
 
        if (use_vex) {
            if (elem_size == 3)
                return emit_vex_instruction(compiler, MOVDDUP_x_xm | EX86_PREF_F2 | EX86_SSE2, freg, 0, src, srcw);
 
            SLJIT_ASSERT(!(src & SLJIT_MEM));
            FAIL_IF(emit_vex_instruction(compiler, SHUFPS_x_xm | EX86_SSE2 | VEX_SSE2_OPV, freg, src, src, 0));
            return emit_byte(compiler, 0);
        }
 
        if (elem_size == 2 && freg != src) {
            FAIL_IF(emit_sse2_load(compiler, 1, freg, src, srcw));
            src = freg;
            srcw = 0;
        }
 
        op = (elem_size == 2 ? SHUFPS_x_xm : MOVDDUP_x_xm) | (elem_size == 2 ? 0 : EX86_PREF_F2) | EX86_SSE2;
        FAIL_IF(emit_groupf(compiler, op, freg, src, srcw));
 
        if (elem_size == 2)
            return emit_byte(compiler, 0);
        return SLJIT_SUCCESS;
    }
 
    if (src == SLJIT_IMM) {
        if (elem_size == 0) {
            srcw = (sljit_u8)srcw;
            srcw |= srcw << 8;
            srcw |= srcw << 16;
            elem_size = 2;
        } else if (elem_size == 1) {
            srcw = (sljit_u16)srcw;
            srcw |= srcw << 16;
            elem_size = 2;
        }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (elem_size == 2 && (sljit_s32)srcw == -1)
            srcw = -1;
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (srcw == 0 || srcw == -1) {
            if (use_vex)
                return emit_vex_instruction(compiler, (srcw == 0 ? PXOR_x_xm : PCMPEQD_x_xm) | (reg_size == 5 ? VEX_256 : 0) | EX86_PREF_66 | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, freg, 0);
 
            return emit_groupf(compiler, (srcw == 0 ? PXOR_x_xm : PCMPEQD_x_xm) | EX86_PREF_66 | EX86_SSE2, freg, freg, 0);
        }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        if (elem_size == 3)
            FAIL_IF(emit_load_imm64(compiler, TMP_REG1, srcw));
        else
#endif /* SLJIT_CONFIG_X86_64 */
            EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, srcw);
 
        src = TMP_REG1;
        srcw = 0;
 
    }
 
    op = 2;
    opcode = MOVD_x_rm;
 
    switch (elem_size) {
    case 0:
        if (!FAST_IS_REG(src)) {
            opcode = 0x3a /* Prefix of PINSRB_x_rm_i8. */;
            op = 3;
        }
        break;
    case 1:
        if (!FAST_IS_REG(src))
            opcode = PINSRW_x_rm_i8;
        break;
    case 2:
        break;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    case 3:
        /* MOVQ */
        compiler->mode32 = 0;
        break;
#endif /* SLJIT_CONFIG_X86_64 */
    }
 
    if (use_vex) {
        if (opcode != MOVD_x_rm) {
            op = (opcode == 0x3a) ? (PINSRB_x_rm_i8 | VEX_OP_0F3A) : opcode;
            FAIL_IF(emit_vex_instruction(compiler, op | EX86_PREF_66 | EX86_SSE2_OP1 | VEX_SSE2_OPV, freg, freg, src, srcw));
        } else
            FAIL_IF(emit_vex_instruction(compiler, MOVD_x_rm | VEX_AUTO_W | EX86_PREF_66 | EX86_SSE2_OP1, freg, 0, src, srcw));
    } else {
        inst = emit_x86_instruction(compiler, op | EX86_PREF_66 | EX86_SSE2_OP1, freg, 0, src, srcw);
        FAIL_IF(!inst);
        inst[0] = GROUP_0F;
        inst[1] = opcode;
 
        if (op == 3) {
            SLJIT_ASSERT(opcode == 0x3a);
            inst[2] = PINSRB_x_rm_i8;
        }
    }
 
    if (use_vex && elem_size >= 2) {
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        op = VPBROADCASTD_x_xm;
#else /* !SLJIT_CONFIG_X86_32 */
        op = (elem_size == 3) ? VPBROADCASTQ_x_xm : VPBROADCASTD_x_xm;
#endif /* SLJIT_CONFIG_X86_32 */
        return emit_vex_instruction(compiler, op | ((reg_size == 5) ? VEX_256 : 0) | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, freg, 0);
    }
 
    SLJIT_ASSERT(reg_size == 4);
 
    if (opcode != MOVD_x_rm)
        FAIL_IF(emit_byte(compiler, 0));
 
    switch (elem_size) {
    case 0:
        if (use_vex) {
            FAIL_IF(emit_vex_instruction(compiler, PXOR_x_xm | EX86_PREF_66 | EX86_SSE2 | VEX_SSE2_OPV, TMP_FREG, TMP_FREG, TMP_FREG, 0));
            return emit_vex_instruction(compiler, PSHUFB_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, TMP_FREG, 0);
        }
        FAIL_IF(emit_groupf(compiler, PXOR_x_xm | EX86_PREF_66 | EX86_SSE2, TMP_FREG, TMP_FREG, 0));
        return emit_groupf_ext(compiler, PSHUFB_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, TMP_FREG, 0);
    case 1:
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, PSHUFLW_x_xm | EX86_PREF_F2 | EX86_SSE2, freg, 0, freg, 0));
        else
            FAIL_IF(emit_groupf(compiler, PSHUFLW_x_xm | EX86_PREF_F2 | EX86_SSE2, freg, freg, 0));
        FAIL_IF(emit_byte(compiler, 0));
        /* fallthrough */
    default:
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, 0, freg, 0));
        else
            FAIL_IF(emit_groupf(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, freg, 0));
        return emit_byte(compiler, 0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    case 3:
        compiler->mode32 = 1;
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, 0, freg, 0));
        else
            FAIL_IF(emit_groupf(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, freg, 0));
        return emit_byte(compiler, 0x44);
#endif /* SLJIT_CONFIG_X86_64 */
    }
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_mov(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg, sljit_s32 lane_index,
    sljit_s32 srcdst, sljit_sw srcdstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 use_vex = (cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX);
    sljit_u8 *inst;
    sljit_u8 opcode = 0;
    sljit_uw op;
    sljit_s32 freg_orig = freg;
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_s32 srcdst_is_ereg = 0;
    sljit_s32 srcdst_orig = 0;
    sljit_sw srcdstw_orig = 0;
#endif /* SLJIT_CONFIG_X86_32 */
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_lane_mov(compiler, type, freg, lane_index, srcdst, srcdstw));
 
    ADJUST_LOCAL_OFFSET(srcdst, srcdstw);
 
    if (reg_size == 5) {
        if (!(cpu_feature_list & CPU_FEATURE_AVX2))
            return SLJIT_ERR_UNSUPPORTED;
        use_vex = 1;
    } else if (reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : elem_size > 2)
        return SLJIT_ERR_UNSUPPORTED;
#else /* SLJIT_CONFIG_X86_32 */
    if (elem_size > 3 || ((type & SLJIT_SIMD_FLOAT) && elem_size < 2))
        return SLJIT_ERR_UNSUPPORTED;
#endif /* SLJIT_CONFIG_X86_32 */
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#else /* !SLJIT_CONFIG_X86_64 */
    if (!(type & SLJIT_SIMD_FLOAT)) {
        CHECK_EXTRA_REGS(srcdst, srcdstw, srcdst_is_ereg = 1);
 
        if ((type & SLJIT_SIMD_STORE) && ((srcdst_is_ereg && elem_size < 2) || (elem_size == 0 && (type & SLJIT_SIMD_LANE_SIGNED) && FAST_IS_REG(srcdst) && reg_map[srcdst] >= 4))) {
            srcdst_orig = srcdst;
            srcdstw_orig = srcdstw;
            srcdst = TMP_REG1;
            srcdstw = 0;
        }
    }
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (type & SLJIT_SIMD_LANE_ZERO) {
        if (lane_index == 0) {
            if (!(type & SLJIT_SIMD_FLOAT)) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
                if (elem_size == 3) {
                    compiler->mode32 = 0;
                    elem_size = 2;
                }
#endif /* SLJIT_CONFIG_X86_64 */
                if (srcdst == SLJIT_IMM) {
                    if (elem_size == 0)
                        srcdstw = (sljit_u8)srcdstw;
                    else if (elem_size == 1)
                        srcdstw = (sljit_u16)srcdstw;
 
                    EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, srcdstw);
                    srcdst = TMP_REG1;
                    srcdstw = 0;
                    elem_size = 2;
                }
 
                if (elem_size == 2) {
                    if (use_vex)
                        return emit_vex_instruction(compiler, MOVD_x_rm | VEX_AUTO_W | EX86_PREF_66 | EX86_SSE2_OP1, freg, 0, srcdst, srcdstw);
                    return emit_groupf(compiler, MOVD_x_rm | EX86_PREF_66 | EX86_SSE2_OP1, freg, srcdst, srcdstw);
                }
            } else if (srcdst & SLJIT_MEM) {
                SLJIT_ASSERT(elem_size == 2 || elem_size == 3);
 
                if (use_vex)
                    return emit_vex_instruction(compiler, MOVSD_x_xm | (elem_size == 2 ? EX86_PREF_F3 : EX86_PREF_F2) | EX86_SSE2, freg, 0, srcdst, srcdstw);
                return emit_groupf(compiler, MOVSD_x_xm | (elem_size == 2 ? EX86_PREF_F3 : EX86_PREF_F2) | EX86_SSE2, freg, srcdst, srcdstw);
            } else if (elem_size == 3) {
                if (use_vex)
                    return emit_vex_instruction(compiler, MOVQ_x_xm | EX86_PREF_F3 | EX86_SSE2, freg, 0, srcdst, 0);
                return emit_groupf(compiler, MOVQ_x_xm | EX86_PREF_F3 | EX86_SSE2, freg, srcdst, 0);
            } else if (use_vex) {
                FAIL_IF(emit_vex_instruction(compiler, XORPD_x_xm | EX86_SSE2 | VEX_SSE2_OPV, TMP_FREG, TMP_FREG, TMP_FREG, 0));
                return emit_vex_instruction(compiler, MOVSD_x_xm | EX86_PREF_F3 | EX86_SSE2 | VEX_SSE2_OPV, freg, TMP_FREG, srcdst, 0);
            }
        }
 
        if (reg_size == 5 && lane_index >= (1 << (4 - elem_size))) {
            freg = TMP_FREG;
            lane_index -= (1 << (4 - elem_size));
        } else if ((type & SLJIT_SIMD_FLOAT) && freg == srcdst) {
            if (use_vex)
                FAIL_IF(emit_vex_instruction(compiler, MOVSD_x_xm | (elem_size == 2 ? EX86_PREF_F3 : EX86_PREF_F2) | EX86_SSE2 | VEX_SSE2_OPV, TMP_FREG, TMP_FREG, srcdst, srcdstw));
            else
                FAIL_IF(emit_sse2_load(compiler, elem_size == 2, TMP_FREG, srcdst, srcdstw));
            srcdst = TMP_FREG;
            srcdstw = 0;
        }
 
        op = ((!(type & SLJIT_SIMD_FLOAT) || elem_size != 2) ? EX86_PREF_66 : 0)
            | ((type & SLJIT_SIMD_FLOAT) ? XORPD_x_xm : PXOR_x_xm) | EX86_SSE2;
 
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, op | (reg_size == 5 ? VEX_256 : 0) | VEX_SSE2_OPV, freg, freg, freg, 0));
        else
            FAIL_IF(emit_groupf(compiler, op, freg, freg, 0));
    } else if (reg_size == 5 && lane_index >= (1 << (4 - elem_size))) {
        FAIL_IF(emit_vex_instruction(compiler, ((type & SLJIT_SIMD_FLOAT) ? VEXTRACTF128_x_ym : VEXTRACTI128_x_ym) | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2, freg, 0, TMP_FREG, 0));
        FAIL_IF(emit_byte(compiler, 1));
 
        freg = TMP_FREG;
        lane_index -= (1 << (4 - elem_size));
    }
 
    if (type & SLJIT_SIMD_FLOAT) {
        if (elem_size == 3) {
            if (srcdst & SLJIT_MEM) {
                if (type & SLJIT_SIMD_STORE)
                    op = lane_index == 0 ? MOVLPD_m_x : MOVHPD_m_x;
                else
                    op = lane_index == 0 ? MOVLPD_x_m : MOVHPD_x_m;
 
                /* VEX prefix clears upper bits of the target register. */
                if (use_vex && ((type & SLJIT_SIMD_STORE) || reg_size == 4 || freg == TMP_FREG))
                    FAIL_IF(emit_vex_instruction(compiler, op | EX86_PREF_66 | EX86_SSE2
                        | ((type & SLJIT_SIMD_STORE) ? 0 : VEX_SSE2_OPV), freg, (type & SLJIT_SIMD_STORE) ? 0 : freg, srcdst, srcdstw));
                else
                    FAIL_IF(emit_groupf(compiler, op | EX86_PREF_66 | EX86_SSE2, freg, srcdst, srcdstw));
 
                /* In case of store, freg is not TMP_FREG. */
            } else if (type & SLJIT_SIMD_STORE) {
                if (lane_index == 1) {
                    if (use_vex)
                        return emit_vex_instruction(compiler, MOVHLPS_x_x | EX86_SSE2 | VEX_SSE2_OPV, srcdst, srcdst, freg, 0);
                    return emit_groupf(compiler, MOVHLPS_x_x | EX86_SSE2, srcdst, freg, 0);
                }
                if (use_vex)
                    return emit_vex_instruction(compiler, MOVSD_x_xm | EX86_PREF_F2 | EX86_SSE2 | VEX_SSE2_OPV, srcdst, srcdst, freg, 0);
                return emit_sse2_load(compiler, 0, srcdst, freg, 0);
            } else if (use_vex && (reg_size == 4 || freg == TMP_FREG)) {
                if (lane_index == 1)
                    FAIL_IF(emit_vex_instruction(compiler, MOVLHPS_x_x | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, srcdst, 0));
                else
                    FAIL_IF(emit_vex_instruction(compiler, MOVSD_x_xm | EX86_PREF_F2 | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, srcdst, 0));
            } else {
                if (lane_index == 1)
                    FAIL_IF(emit_groupf(compiler, MOVLHPS_x_x | EX86_SSE2, freg, srcdst, 0));
                else
                    FAIL_IF(emit_sse2_load(compiler, 0, freg, srcdst, 0));
            }
        } else if (type & SLJIT_SIMD_STORE) {
            if (lane_index == 0) {
                if (use_vex)
                    return emit_vex_instruction(compiler, ((srcdst & SLJIT_MEM) ? MOVSD_xm_x : MOVSD_x_xm) | EX86_PREF_F3 | EX86_SSE2
                        | ((srcdst & SLJIT_MEM) ? 0 : VEX_SSE2_OPV), freg, ((srcdst & SLJIT_MEM) ? 0 : freg), srcdst, srcdstw);
                return emit_sse2_store(compiler, 1, srcdst, srcdstw, freg);
            }
 
            if (srcdst & SLJIT_MEM) {
                if (use_vex)
                    FAIL_IF(emit_vex_instruction(compiler, EXTRACTPS_x_xm | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2, freg, 0, srcdst, srcdstw));
                else
                    FAIL_IF(emit_groupf_ext(compiler, EXTRACTPS_x_xm | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2, freg, srcdst, srcdstw));
                return emit_byte(compiler, U8(lane_index));
            }
 
            if (use_vex) {
                FAIL_IF(emit_vex_instruction(compiler, SHUFPS_x_xm | EX86_SSE2 | VEX_SSE2_OPV, srcdst, freg, freg, 0));
                return emit_byte(compiler, U8(lane_index));
            }
 
            if (srcdst == freg)
                op = SHUFPS_x_xm | EX86_SSE2;
            else {
                switch (lane_index) {
                case 1:
                    op = MOVSHDUP_x_xm | EX86_PREF_F3 | EX86_SSE2;
                    break;
                case 2:
                    op = MOVHLPS_x_x | EX86_SSE2;
                    break;
                default:
                    SLJIT_ASSERT(lane_index == 3);
                    op = PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2;
                    break;
                }
            }
 
            FAIL_IF(emit_groupf(compiler, op, srcdst, freg, 0));
 
            op &= 0xff;
            if (op == SHUFPS_x_xm || op == PSHUFD_x_xm)
                return emit_byte(compiler, U8(lane_index));
 
            return SLJIT_SUCCESS;
        } else {
            if (lane_index != 0 || (srcdst & SLJIT_MEM)) {
                FAIL_IF(emit_groupf_ext(compiler, INSERTPS_x_xm | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2, freg, srcdst, srcdstw));
                FAIL_IF(emit_byte(compiler, U8(lane_index << 4)));
            } else
                FAIL_IF(emit_sse2_store(compiler, 1, freg, 0, srcdst));
        }
 
        if (freg != TMP_FREG || (type & SLJIT_SIMD_STORE))
            return SLJIT_SUCCESS;
 
        SLJIT_ASSERT(reg_size == 5);
 
        if (type & SLJIT_SIMD_LANE_ZERO) {
            FAIL_IF(emit_vex_instruction(compiler, VPERMPD_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg_orig, 0, TMP_FREG, 0));
            return emit_byte(compiler, 0x4e);
        }
 
        FAIL_IF(emit_vex_instruction(compiler, VINSERTF128_y_y_xm | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2 | VEX_SSE2_OPV, freg_orig, freg_orig, TMP_FREG, 0));
        return emit_byte(compiler, 1);
    }
 
    if (srcdst == SLJIT_IMM) {
        EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, srcdstw);
        srcdst = TMP_REG1;
        srcdstw = 0;
    }
 
    op = 3;
 
    switch (elem_size) {
    case 0:
        opcode = (type & SLJIT_SIMD_STORE) ? PEXTRB_rm_x_i8 : PINSRB_x_rm_i8;
        break;
    case 1:
        if (!(type & SLJIT_SIMD_STORE)) {
            op = 2;
            opcode = PINSRW_x_rm_i8;
        } else
            opcode = PEXTRW_rm_x_i8;
        break;
    case 2:
        opcode = (type & SLJIT_SIMD_STORE) ? PEXTRD_rm_x_i8 : PINSRD_x_rm_i8;
        break;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    case 3:
        /* PINSRQ / PEXTRQ */
        opcode = (type & SLJIT_SIMD_STORE) ? PEXTRD_rm_x_i8 : PINSRD_x_rm_i8;
        compiler->mode32 = 0;
        break;
#endif /* SLJIT_CONFIG_X86_64 */
    }
 
    if (use_vex && (type & SLJIT_SIMD_STORE)) {
        op = opcode | ((op == 3) ? VEX_OP_0F3A : 0);
        FAIL_IF(emit_vex_instruction(compiler, op | EX86_PREF_66 | VEX_AUTO_W | EX86_SSE2_OP1 | VEX_SSE2_OPV, freg, 0, srcdst, srcdstw));
    } else {
        inst = emit_x86_instruction(compiler, op | EX86_PREF_66 | EX86_SSE2_OP1, freg, 0, srcdst, srcdstw);
        FAIL_IF(!inst);
        inst[0] = GROUP_0F;
 
        if (op == 3) {
            inst[1] = 0x3a;
            inst[2] = opcode;
        } else
            inst[1] = opcode;
    }
 
    FAIL_IF(emit_byte(compiler, U8(lane_index)));
 
    if (!(type & SLJIT_SIMD_LANE_SIGNED) || (srcdst & SLJIT_MEM)) {
        if (freg == TMP_FREG && !(type & SLJIT_SIMD_STORE)) {
            SLJIT_ASSERT(reg_size == 5);
 
            if (type & SLJIT_SIMD_LANE_ZERO) {
                FAIL_IF(emit_vex_instruction(compiler, VPERMQ_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg_orig, 0, TMP_FREG, 0));
                return emit_byte(compiler, 0x4e);
            }
 
            FAIL_IF(emit_vex_instruction(compiler, VINSERTI128_y_y_xm | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2 | VEX_SSE2_OPV, freg_orig, freg_orig, TMP_FREG, 0));
            return emit_byte(compiler, 1);
        }
 
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
        if (srcdst_orig & SLJIT_MEM)
            return emit_mov(compiler, srcdst_orig, srcdstw_orig, TMP_REG1, 0);
#endif /* SLJIT_CONFIG_X86_32 */
        return SLJIT_SUCCESS;
    }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (elem_size >= 3)
        return SLJIT_SUCCESS;
 
    compiler->mode32 = (type & SLJIT_32);
 
    op = 2;
 
    if (elem_size == 0)
        op |= EX86_REX;
 
    if (elem_size == 2) {
        if (type & SLJIT_32)
            return SLJIT_SUCCESS;
 
        SLJIT_ASSERT(!(compiler->mode32));
        op = 1;
    }
 
    inst = emit_x86_instruction(compiler, op, srcdst, 0, srcdst, 0);
    FAIL_IF(!inst);
 
    if (op != 1) {
        inst[0] = GROUP_0F;
        inst[1] = U8((elem_size == 0) ? MOVSX_r_rm8 : MOVSX_r_rm16);
    } else
        inst[0] = MOVSXD_r_rm;
#else /* !SLJIT_CONFIG_X86_64 */
    if (elem_size >= 2)
        return SLJIT_SUCCESS;
 
    FAIL_IF(emit_groupf(compiler, (elem_size == 0) ? MOVSX_r_rm8 : MOVSX_r_rm16,
        (srcdst_orig != 0 && FAST_IS_REG(srcdst_orig)) ? srcdst_orig : srcdst, srcdst, 0));
 
    if (srcdst_orig & SLJIT_MEM)
        return emit_mov(compiler, srcdst_orig, srcdstw_orig, TMP_REG1, 0);
#endif /* SLJIT_CONFIG_X86_64 */
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_replicate(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_s32 src_lane_index)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 use_vex = (cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX);
    sljit_uw pref;
    sljit_u8 byte;
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_s32 opcode3 = TMP_REG1;
#else /* !SLJIT_CONFIG_X86_32 */
    sljit_s32 opcode3 = SLJIT_S0;
#endif /* SLJIT_CONFIG_X86_32 */
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_lane_replicate(compiler, type, freg, src, src_lane_index));
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
    SLJIT_ASSERT(reg_map[opcode3] == 3);
 
    if (reg_size == 5) {
        if (!(cpu_feature_list & CPU_FEATURE_AVX2))
            return SLJIT_ERR_UNSUPPORTED;
        use_vex = 1;
    } else if (reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_FLOAT) {
        pref = 0;
        byte = U8(src_lane_index);
 
        if (elem_size == 3) {
            if (type & SLJIT_SIMD_TEST)
                return SLJIT_SUCCESS;
 
            if (reg_size == 5) {
                if (src_lane_index == 0)
                    return emit_vex_instruction(compiler, VBROADCASTSD_x_xm | VEX_256 | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, src, 0);
 
                FAIL_IF(emit_vex_instruction(compiler, VPERMPD_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg, 0, src, 0));
 
                byte = U8(byte | (byte << 2));
                return emit_byte(compiler, U8(byte | (byte << 4)));
            }
 
            if (src_lane_index == 0) {
                if (use_vex)
                    return emit_vex_instruction(compiler, MOVDDUP_x_xm | EX86_PREF_F2 | EX86_SSE2, freg, 0, src, 0);
                return emit_groupf(compiler, MOVDDUP_x_xm | EX86_PREF_F2 | EX86_SSE2, freg, src, 0);
            }
 
            /* Changes it to SHUFPD_x_xm. */
            pref = EX86_PREF_66;
        } else if (elem_size != 2)
            return SLJIT_ERR_UNSUPPORTED;
        else if (type & SLJIT_SIMD_TEST)
            return SLJIT_SUCCESS;
 
        if (reg_size == 5) {
            SLJIT_ASSERT(elem_size == 2);
 
            if (src_lane_index == 0)
                return emit_vex_instruction(compiler, VBROADCASTSS_x_xm | VEX_256 | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, src, 0);
 
            FAIL_IF(emit_vex_instruction(compiler, VPERMPD_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg, 0, src, 0));
 
            byte = 0x44;
            if (src_lane_index >= 4) {
                byte = 0xee;
                src_lane_index -= 4;
            }
 
            FAIL_IF(emit_byte(compiler, byte));
            FAIL_IF(emit_vex_instruction(compiler, SHUFPS_x_xm | VEX_256 | pref | EX86_SSE2 | VEX_SSE2_OPV, freg, freg, freg, 0));
            byte = U8(src_lane_index);
        } else if (use_vex) {
            FAIL_IF(emit_vex_instruction(compiler, SHUFPS_x_xm | pref | EX86_SSE2 | VEX_SSE2_OPV, freg, src, src, 0));
        } else {
            if (freg != src)
                FAIL_IF(emit_groupf(compiler, MOVAPS_x_xm | pref | EX86_SSE2, freg, src, 0));
 
            FAIL_IF(emit_groupf(compiler, SHUFPS_x_xm | pref | EX86_SSE2, freg, freg, 0));
        }
 
        if (elem_size == 2) {
            byte = U8(byte | (byte << 2));
            byte = U8(byte | (byte << 4));
        } else
            byte = U8(byte | (byte << 1));
 
        return emit_byte(compiler, U8(byte));
    }
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (elem_size == 0) {
        if (reg_size == 5 && src_lane_index >= 16) {
            FAIL_IF(emit_vex_instruction(compiler, VPERMQ_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg, 0, src, 0));
            FAIL_IF(emit_byte(compiler, src_lane_index >= 24 ? 0xff : 0xaa));
            src_lane_index &= 0x7;
            src = freg;
        }
 
        if (src_lane_index != 0 || (freg != src && (!(cpu_feature_list & CPU_FEATURE_AVX2) || !use_vex))) {
            pref = 0;
 
            if ((src_lane_index & 0x3) == 0) {
                pref = EX86_PREF_66;
                byte = U8(src_lane_index >> 2);
            } else if (src_lane_index < 8 && (src_lane_index & 0x1) == 0) {
                pref = EX86_PREF_F2;
                byte = U8(src_lane_index >> 1);
            } else {
                if (!use_vex) {
                    if (freg != src)
                        FAIL_IF(emit_groupf(compiler, MOVDQA_x_xm | EX86_PREF_66 | EX86_SSE2, freg, src, 0));
 
                    FAIL_IF(emit_groupf(compiler, PSRLDQ_x | EX86_PREF_66 | EX86_SSE2_OP2, opcode3, freg, 0));
                } else
                    FAIL_IF(emit_vex_instruction(compiler, PSRLDQ_x | EX86_PREF_66 | EX86_SSE2_OP2 | VEX_SSE2_OPV, opcode3, freg, src, 0));
 
                FAIL_IF(emit_byte(compiler, U8(src_lane_index)));
            }
 
            if (pref != 0) {
                if (use_vex)
                    FAIL_IF(emit_vex_instruction(compiler, PSHUFLW_x_xm | pref | EX86_SSE2, freg, 0, src, 0));
                else
                    FAIL_IF(emit_groupf(compiler, PSHUFLW_x_xm | pref | EX86_SSE2, freg, src, 0));
                FAIL_IF(emit_byte(compiler, byte));
            }
 
            src = freg;
        }
 
        if (use_vex && (cpu_feature_list & CPU_FEATURE_AVX2))
            return emit_vex_instruction(compiler, VPBROADCASTB_x_xm | (reg_size == 5 ? VEX_256 : 0) | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, src, 0);
 
        SLJIT_ASSERT(reg_size == 4);
        FAIL_IF(emit_groupf(compiler, PXOR_x_xm | EX86_PREF_66 | EX86_SSE2, TMP_FREG, TMP_FREG, 0));
        return emit_groupf_ext(compiler, PSHUFB_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, TMP_FREG, 0);
    }
 
    if ((cpu_feature_list & CPU_FEATURE_AVX2) && use_vex && src_lane_index == 0 && elem_size <= 3) {
        switch (elem_size) {
        case 1:
            pref = VPBROADCASTW_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        case 2:
            pref = VPBROADCASTD_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        default:
            pref = VPBROADCASTQ_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2;
            break;
        }
 
        if (reg_size == 5)
            pref |= VEX_256;
 
        return emit_vex_instruction(compiler, pref, freg, 0, src, 0);
    }
 
    if (reg_size == 5) {
        switch (elem_size) {
        case 1:
            byte = U8(src_lane_index & 0x3);
            src_lane_index >>= 2;
            pref = PSHUFLW_x_xm | VEX_256 | ((src_lane_index & 1) == 0 ? EX86_PREF_F2 : EX86_PREF_F3) | EX86_SSE2;
            break;
        case 2:
            byte = U8(src_lane_index & 0x3);
            src_lane_index >>= 1;
            pref = PSHUFD_x_xm | VEX_256 | EX86_PREF_66 | EX86_SSE2;
            break;
        case 3:
            pref = 0;
            break;
        default:
            FAIL_IF(emit_vex_instruction(compiler, VPERMQ_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg, 0, src, 0));
            return emit_byte(compiler, U8(src_lane_index == 0 ? 0x44 : 0xee));
        }
 
        if (pref != 0) {
            FAIL_IF(emit_vex_instruction(compiler, pref, freg, 0, src, 0));
            byte = U8(byte | (byte << 2));
            FAIL_IF(emit_byte(compiler, U8(byte | (byte << 4))));
 
            if (src_lane_index == 0)
                return emit_vex_instruction(compiler, VPBROADCASTQ_x_xm | VEX_256 | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, freg, 0);
 
            src = freg;
        }
 
        FAIL_IF(emit_vex_instruction(compiler, VPERMQ_y_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | VEX_W | EX86_SSE2, freg, 0, src, 0));
        byte = U8(src_lane_index);
        byte = U8(byte | (byte << 2));
        return emit_byte(compiler, U8(byte | (byte << 4)));
    }
 
    switch (elem_size) {
    case 1:
        byte = U8(src_lane_index & 0x3);
        src_lane_index >>= 1;
        pref = (src_lane_index & 2) == 0 ? EX86_PREF_F2 : EX86_PREF_F3;
 
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, PSHUFLW_x_xm | pref | EX86_SSE2, freg, 0, src, 0));
        else
            FAIL_IF(emit_groupf(compiler, PSHUFLW_x_xm | pref | EX86_SSE2, freg, src, 0));
        byte = U8(byte | (byte << 2));
        FAIL_IF(emit_byte(compiler, U8(byte | (byte << 4))));
 
        if ((cpu_feature_list & CPU_FEATURE_AVX2) && use_vex && pref == EX86_PREF_F2)
            return emit_vex_instruction(compiler, VPBROADCASTD_x_xm | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, freg, 0);
 
        src = freg;
        /* fallthrough */
    case 2:
        byte = U8(src_lane_index);
        byte = U8(byte | (byte << 2));
        break;
    default:
        byte = U8(src_lane_index << 1);
        byte = U8(byte | (byte << 2) | 0x4);
        break;
    }
 
    if (use_vex)
        FAIL_IF(emit_vex_instruction(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, 0, src, 0));
    else
        FAIL_IF(emit_groupf(compiler, PSHUFD_x_xm | EX86_PREF_66 | EX86_SSE2, freg, src, 0));
    return emit_byte(compiler, U8(byte | (byte << 4)));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_extend(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 elem2_size = SLJIT_SIMD_GET_ELEM2_SIZE(type);
    sljit_s32 use_vex = (cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX);
    sljit_u8 opcode;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_extend(compiler, type, freg, src, srcw));
 
    ADJUST_LOCAL_OFFSET(src, srcw);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (reg_size == 5) {
        if (!(cpu_feature_list & CPU_FEATURE_AVX2))
            return SLJIT_ERR_UNSUPPORTED;
        use_vex = 1;
    } else if (reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_FLOAT) {
        if (elem_size != 2 || elem2_size != 3)
            return SLJIT_ERR_UNSUPPORTED;
 
        if (type & SLJIT_SIMD_TEST)
            return SLJIT_SUCCESS;
 
        if (use_vex)
            return emit_vex_instruction(compiler, CVTPS2PD_x_xm | ((reg_size == 5) ? VEX_256 : 0) | EX86_SSE2, freg, 0, src, srcw);
        return emit_groupf(compiler, CVTPS2PD_x_xm | EX86_SSE2, freg, src, srcw);
    }
 
    switch (elem_size) {
    case 0:
        if (elem2_size == 1)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXBW_x_xm : PMOVZXBW_x_xm;
        else if (elem2_size == 2)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXBD_x_xm : PMOVZXBD_x_xm;
        else if (elem2_size == 3)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXBQ_x_xm : PMOVZXBQ_x_xm;
        else
            return SLJIT_ERR_UNSUPPORTED;
        break;
    case 1:
        if (elem2_size == 2)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXWD_x_xm : PMOVZXWD_x_xm;
        else if (elem2_size == 3)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXWQ_x_xm : PMOVZXWQ_x_xm;
        else
            return SLJIT_ERR_UNSUPPORTED;
        break;
    case 2:
        if (elem2_size == 3)
            opcode = (type & SLJIT_SIMD_EXTEND_SIGNED) ? PMOVSXDQ_x_xm : PMOVZXDQ_x_xm;
        else
            return SLJIT_ERR_UNSUPPORTED;
        break;
    default:
        return SLJIT_ERR_UNSUPPORTED;
    }
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (use_vex)
        return emit_vex_instruction(compiler, opcode | ((reg_size == 5) ? VEX_256 : 0) | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, 0, src, srcw);
    return emit_groupf_ext(compiler, opcode | EX86_PREF_66 | VEX_OP_0F38 | EX86_SSE2, freg, src, srcw);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_sign(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 dst, sljit_sw dstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 use_vex = (cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX);
    sljit_s32 dst_r;
    sljit_uw op;
    sljit_u8 *inst;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_sign(compiler, type, freg, dst, dstw));
 
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (elem_size > 3 || ((type & SLJIT_SIMD_FLOAT) && elem_size < 2))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (reg_size == 4) {
        if (type & SLJIT_SIMD_TEST)
            return SLJIT_SUCCESS;
 
        op = EX86_PREF_66 | EX86_SSE2_OP2;
 
        switch (elem_size) {
        case 1:
            if (use_vex)
                FAIL_IF(emit_vex_instruction(compiler, PACKSSWB_x_xm | EX86_PREF_66 | EX86_SSE2 | VEX_SSE2_OPV, TMP_FREG, freg, freg, 0));
            else
                FAIL_IF(emit_groupf(compiler, PACKSSWB_x_xm | EX86_PREF_66 | EX86_SSE2, TMP_FREG, freg, 0));
            freg = TMP_FREG;
            break;
        case 2:
            op = EX86_SSE2_OP2;
            break;
        }
 
        dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
        op |= (elem_size < 2) ? PMOVMSKB_r_x : MOVMSKPS_r_x;
 
        if (use_vex)
            FAIL_IF(emit_vex_instruction(compiler, op, dst_r, 0, freg, 0));
        else
            FAIL_IF(emit_groupf(compiler, op, dst_r, freg, 0));
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = type & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
 
        if (elem_size == 1) {
            inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, SLJIT_IMM, 8, dst_r, 0);
            FAIL_IF(!inst);
            inst[1] |= SHR;
        }
 
        if (dst_r == TMP_REG1)
            return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
 
        return SLJIT_SUCCESS;
    }
 
    if (reg_size != 5 || !(cpu_feature_list & CPU_FEATURE_AVX2))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if (elem_size == 1) {
        FAIL_IF(emit_vex_instruction(compiler, VEXTRACTI128_x_ym | VEX_256 | EX86_PREF_66 | VEX_OP_0F3A | EX86_SSE2, freg, 0, TMP_FREG, 0));
        FAIL_IF(emit_byte(compiler, 1));
        FAIL_IF(emit_vex_instruction(compiler, PACKSSWB_x_xm | VEX_256 | EX86_PREF_66 | EX86_SSE2 | VEX_SSE2_OPV, TMP_FREG, freg, TMP_FREG, 0));
        FAIL_IF(emit_groupf(compiler, PMOVMSKB_r_x | EX86_PREF_66 | EX86_SSE2_OP2, dst_r, TMP_FREG, 0));
    } else {
        op = MOVMSKPS_r_x | VEX_256 | EX86_SSE2_OP2;
 
        if (elem_size == 0)
            op = PMOVMSKB_r_x | VEX_256 | EX86_PREF_66 | EX86_SSE2_OP2;
        else if (elem_size == 3)
            op |= EX86_PREF_66;
 
        FAIL_IF(emit_vex_instruction(compiler, op, dst_r, 0, freg, 0));
    }
 
    if (dst_r == TMP_REG1) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = type & SLJIT_32;
#endif /* SLJIT_CONFIG_X86_64 */
        return emit_mov(compiler, dst, dstw, TMP_REG1, 0);
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_simd_mov(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_freg, sljit_s32 src_freg)
{
    sljit_uw op = ((type & SLJIT_SIMD_FLOAT) ? MOVAPS_x_xm : MOVDQA_x_xm) | EX86_SSE2;
 
    SLJIT_ASSERT(SLJIT_SIMD_GET_REG_SIZE(type) == 4);
 
    if (!(type & SLJIT_SIMD_FLOAT) || SLJIT_SIMD_GET_ELEM_SIZE(type) == 3)
        op |= EX86_PREF_66;
 
    return emit_groupf(compiler, op, dst_freg, src_freg, 0);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_op2(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_freg, sljit_s32 src1_freg, sljit_s32 src2_freg)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_uw op = 0;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_op2(compiler, type, dst_freg, src1_freg, src2_freg));
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 1;
#endif /* SLJIT_CONFIG_X86_64 */
 
    if (reg_size == 5) {
        if (!(cpu_feature_list & CPU_FEATURE_AVX2))
            return SLJIT_ERR_UNSUPPORTED;
    } else if (reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    switch (SLJIT_SIMD_GET_OPCODE(type)) {
    case SLJIT_SIMD_OP2_AND:
        op = (type & SLJIT_SIMD_FLOAT) ? ANDPD_x_xm : PAND_x_xm;
 
        if (!(type & SLJIT_SIMD_FLOAT) || elem_size == 3)
            op |= EX86_PREF_66;
        break;
    case SLJIT_SIMD_OP2_OR:
        op = (type & SLJIT_SIMD_FLOAT) ? ORPD_x_xm : POR_x_xm;
 
        if (!(type & SLJIT_SIMD_FLOAT) || elem_size == 3)
            op |= EX86_PREF_66;
        break;
    case SLJIT_SIMD_OP2_XOR:
        op = (type & SLJIT_SIMD_FLOAT) ? XORPD_x_xm : PXOR_x_xm;
 
        if (!(type & SLJIT_SIMD_FLOAT) || elem_size == 3)
            op |= EX86_PREF_66;
        break;
    }
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 5 || ((cpu_feature_list & CPU_FEATURE_AVX) && (compiler->options & SLJIT_ENTER_USE_VEX))) {
        if (reg_size == 5)
            op |= VEX_256;
 
        return emit_vex_instruction(compiler, op | EX86_SSE2 | VEX_SSE2_OPV, dst_freg, src1_freg, src2_freg, 0);
    }
 
    if (dst_freg != src1_freg) {
        if (dst_freg == src2_freg)
            src2_freg = src1_freg;
        else
            FAIL_IF(emit_simd_mov(compiler, type, dst_freg, src1_freg));
    }
 
    FAIL_IF(emit_groupf(compiler, op | EX86_SSE2, dst_freg, src2_freg, 0));
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_load(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 mem_reg)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_atomic_load(compiler, op, dst_reg, mem_reg));
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_op1(compiler, op, dst_reg, 0, SLJIT_MEM1(mem_reg), 0);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_store(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src_reg,
    sljit_s32 mem_reg,
    sljit_s32 temp_reg)
{
    sljit_uw pref;
    sljit_s32 free_reg = TMP_REG1;
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_sw srcw = 0;
    sljit_sw tempw = 0;
#endif /* SLJIT_CONFIG_X86_32 */
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_atomic_store(compiler, op, src_reg, mem_reg, temp_reg));
    CHECK_EXTRA_REGS(src_reg, srcw, (void)0);
    CHECK_EXTRA_REGS(temp_reg, tempw, (void)0);
 
    SLJIT_ASSERT(FAST_IS_REG(src_reg) || src_reg == SLJIT_MEM1(SLJIT_SP));
    SLJIT_ASSERT(FAST_IS_REG(temp_reg) || temp_reg == SLJIT_MEM1(SLJIT_SP));
 
    op = GET_OPCODE(op);
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    if ((src_reg & SLJIT_MEM) || (op == SLJIT_MOV_U8 && reg_map[src_reg] >= 4)) {
        /* Src is virtual register or its low byte is not accessible. */
        SLJIT_ASSERT(src_reg != SLJIT_R1);
        free_reg = src_reg;
 
        EMIT_MOV(compiler, TMP_REG1, 0, src_reg, srcw);
        src_reg = TMP_REG1;
 
        if (mem_reg == src_reg)
            mem_reg = TMP_REG1;
    }
#endif /* SLJIT_CONFIG_X86_32 */
 
    if (temp_reg != SLJIT_R0) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = 0;
 
        EMIT_MOV(compiler, free_reg, 0, SLJIT_R0, 0);
        EMIT_MOV(compiler, SLJIT_R0, 0, temp_reg, 0);
 
        if (src_reg == SLJIT_R0)
            src_reg = free_reg;
        if (mem_reg == SLJIT_R0)
            mem_reg = free_reg;
#else /* !SLJIT_CONFIG_X86_64 */
        if (src_reg == TMP_REG1 && mem_reg == SLJIT_R0 && (free_reg & SLJIT_MEM)) {
            EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_R1, 0);
            EMIT_MOV(compiler, SLJIT_R1, 0, SLJIT_R0, 0);
            EMIT_MOV(compiler, SLJIT_R0, 0, temp_reg, tempw);
 
            mem_reg = SLJIT_R1;
            free_reg = SLJIT_R1;
        } else {
            EMIT_MOV(compiler, free_reg, 0, SLJIT_R0, 0);
            EMIT_MOV(compiler, SLJIT_R0, 0, temp_reg, tempw);
 
            if (src_reg == SLJIT_R0)
                src_reg = free_reg;
            if (mem_reg == SLJIT_R0)
                mem_reg = free_reg;
        }
#endif /* SLJIT_CONFIG_X86_64 */
    }
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = op != SLJIT_MOV && op != SLJIT_MOV_P;
#endif /* SLJIT_CONFIG_X86_64 */
 
    /* Lock prefix. */
    FAIL_IF(emit_byte(compiler, GROUP_LOCK));
 
    pref = 0;
    if (op == SLJIT_MOV_U16)
        pref = EX86_HALF_ARG | EX86_PREF_66;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (op == SLJIT_MOV_U8)
        pref = EX86_REX;
#endif /* SLJIT_CONFIG_X86_64 */
 
    FAIL_IF(emit_groupf(compiler, (op == SLJIT_MOV_U8 ? CMPXCHG_rm8_r : CMPXCHG_rm_r) | pref, src_reg, SLJIT_MEM1(mem_reg), 0));
 
    if (temp_reg != SLJIT_R0) {
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
        compiler->mode32 = 0;
        return emit_mov(compiler, SLJIT_R0, 0, TMP_REG1, 0);
#else /* !SLJIT_CONFIG_X86_64 */
        EMIT_MOV(compiler, SLJIT_R0, 0, free_reg, 0);
        if (free_reg != TMP_REG1)
            return emit_mov(compiler, free_reg, 0, (free_reg == SLJIT_R1) ? SLJIT_MEM1(SLJIT_SP) : TMP_REG1, 0);
#endif /* SLJIT_CONFIG_X86_64 */
    }
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_local_base(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw offset)
{
    CHECK_ERROR();
    CHECK(check_sljit_get_local_base(compiler, dst, dstw, offset));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 0;
#endif
 
    ADJUST_LOCAL_OFFSET(SLJIT_MEM1(SLJIT_SP), offset);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (NOT_HALFWORD(offset)) {
        FAIL_IF(emit_load_imm64(compiler, TMP_REG1, offset));
#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
        SLJIT_ASSERT(emit_lea_binary(compiler, dst, dstw, SLJIT_SP, 0, TMP_REG1, 0) != SLJIT_ERR_UNSUPPORTED);
        return compiler->error;
#else
        return emit_lea_binary(compiler, dst, dstw, SLJIT_SP, 0, TMP_REG1, 0);
#endif
    }
#endif
 
    if (offset != 0)
        return emit_lea_binary(compiler, dst, dstw, SLJIT_SP, 0, SLJIT_IMM, offset);
    return emit_mov(compiler, dst, dstw, SLJIT_SP, 0);
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
{
    sljit_u8 *inst;
    struct sljit_const *const_;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_s32 reg;
#endif
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
 
    const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
    PTR_FAIL_IF(!const_);
    set_const(const_, compiler);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 0;
    reg = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if (emit_load_imm64(compiler, reg, init_value))
        return NULL;
#else
    if (emit_mov(compiler, dst, dstw, SLJIT_IMM, init_value))
        return NULL;
#endif
 
    inst = (sljit_u8*)ensure_buf(compiler, 1);
    PTR_FAIL_IF(!inst);
 
    inst[0] = SLJIT_INST_CONST;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (dst & SLJIT_MEM)
        if (emit_mov(compiler, dst, dstw, TMP_REG1, 0))
            return NULL;
#endif
 
    return const_;
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_mov_addr(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
{
    struct sljit_jump *jump;
    sljit_u8 *inst;
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    sljit_s32 reg;
#endif /* SLJIT_CONFIG_X86_64 */
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_mov_addr(compiler, dst, dstw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    CHECK_EXTRA_REGS(dst, dstw, (void)0);
 
    jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
    PTR_FAIL_IF(!jump);
    set_mov_addr(jump, compiler, 0);
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    compiler->mode32 = 0;
    reg = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    PTR_FAIL_IF(emit_load_imm64(compiler, reg, 0));
    jump->addr = compiler->size;
 
    if (reg_map[reg] >= 8)
        jump->flags |= MOV_ADDR_HI;
#else /* !SLJIT_CONFIG_X86_64 */
    PTR_FAIL_IF(emit_mov(compiler, dst, dstw, SLJIT_IMM, 0));
#endif /* SLJIT_CONFIG_X86_64 */
 
    inst = (sljit_u8*)ensure_buf(compiler, 1);
    PTR_FAIL_IF(!inst);
 
    inst[0] = SLJIT_INST_MOV_ADDR;
 
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
    if (dst & SLJIT_MEM)
        PTR_FAIL_IF(emit_mov(compiler, dst, dstw, TMP_REG1, 0));
#endif /* SLJIT_CONFIG_X86_64 */
 
    return jump;
}
 
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
{
    SLJIT_UNUSED_ARG(executable_offset);
 
    SLJIT_UPDATE_WX_FLAGS((void*)addr, (void*)(addr + sizeof(sljit_uw)), 0);
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
    sljit_unaligned_store_sw((void*)addr, (sljit_sw)(new_target - (addr + 4) - (sljit_uw)executable_offset));
#else
    sljit_unaligned_store_sw((void*)addr, (sljit_sw)new_target);
#endif
    SLJIT_UPDATE_WX_FLAGS((void*)addr, (void*)(addr + sizeof(sljit_uw)), 1);
}
 
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
{
    SLJIT_UNUSED_ARG(executable_offset);
 
    SLJIT_UPDATE_WX_FLAGS((void*)addr, (void*)(addr + sizeof(sljit_sw)), 0);
    sljit_unaligned_store_sw((void*)addr, new_constant);
    SLJIT_UPDATE_WX_FLAGS((void*)addr, (void*)(addr + sizeof(sljit_sw)), 1);
}