PCRE2: remove PCRE1 code

Change-Id: I83cf7c22fe95fb6384b751d09867633a72f093db
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 0 insertions, 550 deletions

diff --git a/src/3rdparty/pcre/sljit/sljitNativeX86_32.c b/src/3rdparty/pcre/sljit/sljitNativeX86_32.c
deleted file mode 100644
index cd3c656c66..0000000000
--- a/src/3rdparty/pcre/sljit/sljitNativeX86_32.c
+++ /dev/null
@@ -1,550 +0,0 @@
-/*
- *    Stack-less Just-In-Time compiler
- *
- *    Copyright 2009-2012 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.
- */
-
-/* x86 32-bit arch dependent functions. */
-
-static sljit_s32 emit_do_imm(struct sljit_compiler *compiler, sljit_u8 opcode, sljit_sw imm)
-{
-	sljit_u8 *inst;
-
-	inst = (sljit_u8*)ensure_buf(compiler, 1 + 1 + sizeof(sljit_sw));
-	FAIL_IF(!inst);
-	INC_SIZE(1 + sizeof(sljit_sw));
-	*inst++ = opcode;
-	*(sljit_sw*)inst = imm;
-	return SLJIT_SUCCESS;
-}
-
-static sljit_u8* generate_far_jump_code(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_s32 type)
-{
-	if (type == SLJIT_JUMP) {
-		*code_ptr++ = JMP_i32;
-		jump->addr++;
-	}
-	else if (type >= SLJIT_FAST_CALL) {
-		*code_ptr++ = CALL_i32;
-		jump->addr++;
-	}
-	else {
-		*code_ptr++ = GROUP_0F;
-		*code_ptr++ = get_jump_code(type);
-		jump->addr += 2;
-	}
-
-	if (jump->flags & JUMP_LABEL)
-		jump->flags |= PATCH_MW;
-	else
-		*(sljit_sw*)code_ptr = jump->u.target - (jump->addr + 4);
-	code_ptr += 4;
-
-	return code_ptr;
-}
-
-SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
-	sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
-	sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
-{
-	sljit_s32 size;
-	sljit_u8 *inst;
-
-	CHECK_ERROR();
-	CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
-	set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
-
-	compiler->args = args;
-	compiler->flags_saved = 0;
-
-	size = 1 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3);
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	size += (args > 0 ? (args * 2) : 0) + (args > 2 ? 2 : 0);
-#else
-	size += (args > 0 ? (2 + args * 3) : 0);
-#endif
-	inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
-	FAIL_IF(!inst);
-
-	INC_SIZE(size);
-	PUSH_REG(reg_map[TMP_REG1]);
-#if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	if (args > 0) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_REG | (reg_map[TMP_REG1] << 3) | 0x4 /* esp */;
-	}
-#endif
-	if (saveds > 2 || scratches > 7)
-		PUSH_REG(reg_map[SLJIT_S2]);
-	if (saveds > 1 || scratches > 8)
-		PUSH_REG(reg_map[SLJIT_S1]);
-	if (saveds > 0 || scratches > 9)
-		PUSH_REG(reg_map[SLJIT_S0]);
-
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	if (args > 0) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_REG | (reg_map[SLJIT_S0] << 3) | reg_map[SLJIT_R2];
-	}
-	if (args > 1) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_REG | (reg_map[SLJIT_S1] << 3) | reg_map[SLJIT_R1];
-	}
-	if (args > 2) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | 0x4 /* esp */;
-		*inst++ = 0x24;
-		*inst++ = sizeof(sljit_sw) * (3 + 2); /* saveds >= 3 as well. */
-	}
-#else
-	if (args > 0) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_S0] << 3) | reg_map[TMP_REG1];
-		*inst++ = sizeof(sljit_sw) * 2;
-	}
-	if (args > 1) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_S1] << 3) | reg_map[TMP_REG1];
-		*inst++ = sizeof(sljit_sw) * 3;
-	}
-	if (args > 2) {
-		*inst++ = MOV_r_rm;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | reg_map[TMP_REG1];
-		*inst++ = sizeof(sljit_sw) * 4;
-	}
-#endif
-
-	SLJIT_COMPILE_ASSERT(SLJIT_LOCALS_OFFSET >= (2 + 4) * sizeof(sljit_uw), require_at_least_two_words);
-#if defined(__APPLE__)
-	/* Ignore pushed registers and SLJIT_LOCALS_OFFSET when computing the aligned local size. */
-	saveds = (2 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw);
-	local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds;
-#else
-	if (options & SLJIT_DOUBLE_ALIGNMENT) {
-		local_size = SLJIT_LOCALS_OFFSET + ((local_size + 7) & ~7);
-
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 17);
-		FAIL_IF(!inst);
-
-		INC_SIZE(17);
-		inst[0] = MOV_r_rm;
-		inst[1] = MOD_REG | (reg_map[TMP_REG1] << 3) | reg_map[SLJIT_SP];
-		inst[2] = GROUP_F7;
-		inst[3] = MOD_REG | (0 << 3) | reg_map[SLJIT_SP];
-		*(sljit_sw*)(inst + 4) = 0x4;
-		inst[8] = JNE_i8;
-		inst[9] = 6;
-		inst[10] = GROUP_BINARY_81;
-		inst[11] = MOD_REG | (5 << 3) | reg_map[SLJIT_SP];
-		*(sljit_sw*)(inst + 12) = 0x4;
-		inst[16] = PUSH_r + reg_map[TMP_REG1];
-	}
-	else
-		local_size = SLJIT_LOCALS_OFFSET + ((local_size + 3) & ~3);
-#endif
-
-	compiler->local_size = local_size;
-#ifdef _WIN32
-	if (local_size > 1024) {
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-		FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size));
-#else
-		local_size -= SLJIT_LOCALS_OFFSET;
-		FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size));
-		FAIL_IF(emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32,
-			SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, SLJIT_LOCALS_OFFSET));
-#endif
-		FAIL_IF(sljit_emit_ijump(compiler, SLJIT_CALL1, SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_grow_stack)));
-	}
-#endif
-
-	SLJIT_ASSERT(local_size > 0);
-	return emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32,
-		SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size);
-}
-
-SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
-	sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
-	sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
-{
-	CHECK_ERROR();
-	CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
-	set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
-
-	compiler->args = args;
-
-#if defined(__APPLE__)
-	saveds = (2 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw);
-	compiler->local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds;
-#else
-	if (options & SLJIT_DOUBLE_ALIGNMENT)
-		compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + 7) & ~7);
-	else
-		compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + 3) & ~3);
-#endif
-	return SLJIT_SUCCESS;
-}
-
-SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
-{
-	sljit_s32 size;
-	sljit_u8 *inst;
-
-	CHECK_ERROR();
-	CHECK(check_sljit_emit_return(compiler, op, src, srcw));
-	SLJIT_ASSERT(compiler->args >= 0);
-
-	compiler->flags_saved = 0;
-	FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
-
-	SLJIT_ASSERT(compiler->local_size > 0);
-	FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32,
-		SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size));
-
-#if !defined(__APPLE__)
-	if (compiler->options & SLJIT_DOUBLE_ALIGNMENT) {
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 3);
-		FAIL_IF(!inst);
-
-		INC_SIZE(3);
-		inst[0] = MOV_r_rm;
-		inst[1] = (reg_map[SLJIT_SP] << 3) | 0x4 /* SIB */;
-		inst[2] = (4 << 3) | reg_map[SLJIT_SP];
-	}
-#endif
-
-	size = 2 + (compiler->scratches > 7 ? (compiler->scratches - 7) : 0) +
-		(compiler->saveds <= 3 ? compiler->saveds : 3);
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	if (compiler->args > 2)
-		size += 2;
-#else
-	if (compiler->args > 0)
-		size += 2;
-#endif
-	inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
-	FAIL_IF(!inst);
-
-	INC_SIZE(size);
-
-	if (compiler->saveds > 0 || compiler->scratches > 9)
-		POP_REG(reg_map[SLJIT_S0]);
-	if (compiler->saveds > 1 || compiler->scratches > 8)
-		POP_REG(reg_map[SLJIT_S1]);
-	if (compiler->saveds > 2 || compiler->scratches > 7)
-		POP_REG(reg_map[SLJIT_S2]);
-	POP_REG(reg_map[TMP_REG1]);
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	if (compiler->args > 2)
-		RET_I16(sizeof(sljit_sw));
-	else
-		RET();
-#else
-	RET();
-#endif
-
-	return SLJIT_SUCCESS;
-}
-
-/* --------------------------------------------------------------------- */
-/*  Operators                                                            */
-/* --------------------------------------------------------------------- */
-
-/* Size contains the flags as well. */
-static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 size,
-	/* The register or immediate operand. */
-	sljit_s32 a, sljit_sw imma,
-	/* The general operand (not immediate). */
-	sljit_s32 b, sljit_sw immb)
-{
-	sljit_u8 *inst;
-	sljit_u8 *buf_ptr;
-	sljit_s32 flags = size & ~0xf;
-	sljit_s32 inst_size;
-
-	/* Both cannot be switched on. */
-	SLJIT_ASSERT((flags & (EX86_BIN_INS | EX86_SHIFT_INS)) != (EX86_BIN_INS | EX86_SHIFT_INS));
-	/* Size flags not allowed for typed instructions. */
-	SLJIT_ASSERT(!(flags & (EX86_BIN_INS | EX86_SHIFT_INS)) || (flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) == 0);
-	/* Both size flags cannot be switched on. */
-	SLJIT_ASSERT((flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) != (EX86_BYTE_ARG | EX86_HALF_ARG));
-	/* SSE2 and immediate is not possible. */
-	SLJIT_ASSERT(!(a & SLJIT_IMM) || !(flags & EX86_SSE2));
-	SLJIT_ASSERT((flags & (EX86_PREF_F2 | EX86_PREF_F3)) != (EX86_PREF_F2 | EX86_PREF_F3)
-		&& (flags & (EX86_PREF_F2 | EX86_PREF_66)) != (EX86_PREF_F2 | EX86_PREF_66)
-		&& (flags & (EX86_PREF_F3 | EX86_PREF_66)) != (EX86_PREF_F3 | EX86_PREF_66));
-
-	size &= 0xf;
-	inst_size = size;
-
-	if (flags & (EX86_PREF_F2 | EX86_PREF_F3))
-		inst_size++;
-	if (flags & EX86_PREF_66)
-		inst_size++;
-
-	/* Calculate size of b. */
-	inst_size += 1; /* mod r/m byte. */
-	if (b & SLJIT_MEM) {
-		if ((b & REG_MASK) == SLJIT_UNUSED)
-			inst_size += sizeof(sljit_sw);
-		else if (immb != 0 && !(b & OFFS_REG_MASK)) {
-			/* Immediate operand. */
-			if (immb <= 127 && immb >= -128)
-				inst_size += sizeof(sljit_s8);
-			else
-				inst_size += sizeof(sljit_sw);
-		}
-
-		if ((b & REG_MASK) == SLJIT_SP && !(b & OFFS_REG_MASK))
-			b |= TO_OFFS_REG(SLJIT_SP);
-
-		if ((b & OFFS_REG_MASK) != SLJIT_UNUSED)
-			inst_size += 1; /* SIB byte. */
-	}
-
-	/* Calculate size of a. */
-	if (a & SLJIT_IMM) {
-		if (flags & EX86_BIN_INS) {
-			if (imma <= 127 && imma >= -128) {
-				inst_size += 1;
-				flags |= EX86_BYTE_ARG;
-			} else
-				inst_size += 4;
-		}
-		else if (flags & EX86_SHIFT_INS) {
-			imma &= 0x1f;
-			if (imma != 1) {
-				inst_size ++;
-				flags |= EX86_BYTE_ARG;
-			}
-		} else if (flags & EX86_BYTE_ARG)
-			inst_size++;
-		else if (flags & EX86_HALF_ARG)
-			inst_size += sizeof(short);
-		else
-			inst_size += sizeof(sljit_sw);
-	}
-	else
-		SLJIT_ASSERT(!(flags & EX86_SHIFT_INS) || a == SLJIT_PREF_SHIFT_REG);
-
-	inst = (sljit_u8*)ensure_buf(compiler, 1 + inst_size);
-	PTR_FAIL_IF(!inst);
-
-	/* Encoding the byte. */
-	INC_SIZE(inst_size);
-	if (flags & EX86_PREF_F2)
-		*inst++ = 0xf2;
-	if (flags & EX86_PREF_F3)
-		*inst++ = 0xf3;
-	if (flags & EX86_PREF_66)
-		*inst++ = 0x66;
-
-	buf_ptr = inst + size;
-
-	/* Encode mod/rm byte. */
-	if (!(flags & EX86_SHIFT_INS)) {
-		if ((flags & EX86_BIN_INS) && (a & SLJIT_IMM))
-			*inst = (flags & EX86_BYTE_ARG) ? GROUP_BINARY_83 : GROUP_BINARY_81;
-
-		if ((a & SLJIT_IMM) || (a == 0))
-			*buf_ptr = 0;
-		else if (!(flags & EX86_SSE2_OP1))
-			*buf_ptr = reg_map[a] << 3;
-		else
-			*buf_ptr = a << 3;
-	}
-	else {
-		if (a & SLJIT_IMM) {
-			if (imma == 1)
-				*inst = GROUP_SHIFT_1;
-			else
-				*inst = GROUP_SHIFT_N;
-		} else
-			*inst = GROUP_SHIFT_CL;
-		*buf_ptr = 0;
-	}
-
-	if (!(b & SLJIT_MEM))
-		*buf_ptr++ |= MOD_REG + ((!(flags & EX86_SSE2_OP2)) ? reg_map[b] : b);
-	else if ((b & REG_MASK) != SLJIT_UNUSED) {
-		if ((b & OFFS_REG_MASK) == SLJIT_UNUSED || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) {
-			if (immb != 0) {
-				if (immb <= 127 && immb >= -128)
-					*buf_ptr |= 0x40;
-				else
-					*buf_ptr |= 0x80;
-			}
-
-			if ((b & OFFS_REG_MASK) == SLJIT_UNUSED)
-				*buf_ptr++ |= reg_map[b & REG_MASK];
-			else {
-				*buf_ptr++ |= 0x04;
-				*buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3);
-			}
-
-			if (immb != 0) {
-				if (immb <= 127 && immb >= -128)
-					*buf_ptr++ = immb; /* 8 bit displacement. */
-				else {
-					*(sljit_sw*)buf_ptr = immb; /* 32 bit displacement. */
-					buf_ptr += sizeof(sljit_sw);
-				}
-			}
-		}
-		else {
-			*buf_ptr++ |= 0x04;
-			*buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3) | (immb << 6);
-		}
-	}
-	else {
-		*buf_ptr++ |= 0x05;
-		*(sljit_sw*)buf_ptr = immb; /* 32 bit displacement. */
-		buf_ptr += sizeof(sljit_sw);
-	}
-
-	if (a & SLJIT_IMM) {
-		if (flags & EX86_BYTE_ARG)
-			*buf_ptr = imma;
-		else if (flags & EX86_HALF_ARG)
-			*(short*)buf_ptr = imma;
-		else if (!(flags & EX86_SHIFT_INS))
-			*(sljit_sw*)buf_ptr = imma;
-	}
-
-	return !(flags & EX86_SHIFT_INS) ? inst : (inst + 1);
-}
-
-/* --------------------------------------------------------------------- */
-/*  Call / return instructions                                           */
-/* --------------------------------------------------------------------- */
-
-static SLJIT_INLINE sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 type)
-{
-	sljit_u8 *inst;
-
-#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
-	inst = (sljit_u8*)ensure_buf(compiler, type >= SLJIT_CALL3 ? 1 + 2 + 1 : 1 + 2);
-	FAIL_IF(!inst);
-	INC_SIZE(type >= SLJIT_CALL3 ? 2 + 1 : 2);
-
-	if (type >= SLJIT_CALL3)
-		PUSH_REG(reg_map[SLJIT_R2]);
-	*inst++ = MOV_r_rm;
-	*inst++ = MOD_REG | (reg_map[SLJIT_R2] << 3) | reg_map[SLJIT_R0];
-#else
-	inst = (sljit_u8*)ensure_buf(compiler, 1 + 4 * (type - SLJIT_CALL0));
-	FAIL_IF(!inst);
-	INC_SIZE(4 * (type - SLJIT_CALL0));
-
-	*inst++ = MOV_rm_r;
-	*inst++ = MOD_DISP8 | (reg_map[SLJIT_R0] << 3) | 0x4 /* SIB */;
-	*inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP];
-	*inst++ = 0;
-	if (type >= SLJIT_CALL2) {
-		*inst++ = MOV_rm_r;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_R1] << 3) | 0x4 /* SIB */;
-		*inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP];
-		*inst++ = sizeof(sljit_sw);
-	}
-	if (type >= SLJIT_CALL3) {
-		*inst++ = MOV_rm_r;
-		*inst++ = MOD_DISP8 | (reg_map[SLJIT_R2] << 3) | 0x4 /* SIB */;
-		*inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP];
-		*inst++ = 2 * sizeof(sljit_sw);
-	}
-#endif
-	return SLJIT_SUCCESS;
-}
-
-SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
-{
-	sljit_u8 *inst;
-
-	CHECK_ERROR();
-	CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
-	ADJUST_LOCAL_OFFSET(dst, dstw);
-
-	CHECK_EXTRA_REGS(dst, dstw, (void)0);
-
-	/* For UNUSED dst. Uncommon, but possible. */
-	if (dst == SLJIT_UNUSED)
-		dst = TMP_REG1;
-
-	if (FAST_IS_REG(dst)) {
-		/* Unused dest is possible here. */
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 1);
-		FAIL_IF(!inst);
-
-		INC_SIZE(1);
-		POP_REG(reg_map[dst]);
-		return SLJIT_SUCCESS;
-	}
-
-	/* Memory. */
-	inst = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw);
-	FAIL_IF(!inst);
-	*inst++ = POP_rm;
-	return SLJIT_SUCCESS;
-}
-
-SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
-{
-	sljit_u8 *inst;
-
-	CHECK_ERROR();
-	CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
-	ADJUST_LOCAL_OFFSET(src, srcw);
-
-	CHECK_EXTRA_REGS(src, srcw, (void)0);
-
-	if (FAST_IS_REG(src)) {
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 1 + 1);
-		FAIL_IF(!inst);
-
-		INC_SIZE(1 + 1);
-		PUSH_REG(reg_map[src]);
-	}
-	else if (src & SLJIT_MEM) {
-		inst = emit_x86_instruction(compiler, 1, 0, 0, src, srcw);
-		FAIL_IF(!inst);
-		*inst++ = GROUP_FF;
-		*inst |= PUSH_rm;
-
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 1);
-		FAIL_IF(!inst);
-		INC_SIZE(1);
-	}
-	else {
-		/* SLJIT_IMM. */
-		inst = (sljit_u8*)ensure_buf(compiler, 1 + 5 + 1);
-		FAIL_IF(!inst);
-
-		INC_SIZE(5 + 1);
-		*inst++ = PUSH_i32;
-		*(sljit_sw*)inst = srcw;
-		inst += sizeof(sljit_sw);
-	}
-
-	RET();
-	return SLJIT_SUCCESS;
-}