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annotate third_party/luajit/src/lj_iropt.h @ 183:a8976a008a9d

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[BenchMark] Added bun bench mark to test seoboe vs other popular benchmarks.
author MrJuneJune <me@mrjunejune.com>
date Fri, 23 Jan 2026 21:19:08 -0800
parents 94705b5986b3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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178
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1 /*
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2 ** Common header for IR emitter and optimizations.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #ifndef _LJ_IROPT_H
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7 #define _LJ_IROPT_H
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8
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9 #include <stdarg.h>
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10
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11 #include "lj_obj.h"
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12 #include "lj_jit.h"
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13
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14 #if LJ_HASJIT
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15 /* IR emitter. */
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16 LJ_FUNC void LJ_FASTCALL lj_ir_growtop(jit_State *J);
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17 LJ_FUNC TRef LJ_FASTCALL lj_ir_emit(jit_State *J);
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18
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19 /* Save current IR in J->fold.ins, but do not emit it (yet). */
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20 static LJ_AINLINE void lj_ir_set_(jit_State *J, uint16_t ot, IRRef1 a, IRRef1 b)
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21 {
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22 J->fold.ins.ot = ot; J->fold.ins.op1 = a; J->fold.ins.op2 = b;
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23 }
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24
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25 #define lj_ir_set(J, ot, a, b) \
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26 lj_ir_set_(J, (uint16_t)(ot), (IRRef1)(a), (IRRef1)(b))
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27
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28 /* Get ref of next IR instruction and optionally grow IR.
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29 ** Note: this may invalidate all IRIns*!
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30 */
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31 static LJ_AINLINE IRRef lj_ir_nextins(jit_State *J)
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32 {
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33 IRRef ref = J->cur.nins;
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34 if (LJ_UNLIKELY(ref >= J->irtoplim)) lj_ir_growtop(J);
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35 J->cur.nins = ref + 1;
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36 return ref;
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37 }
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38
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39 LJ_FUNC TRef lj_ir_ggfload(jit_State *J, IRType t, uintptr_t ofs);
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40
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41 /* Interning of constants. */
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42 LJ_FUNC TRef LJ_FASTCALL lj_ir_kint(jit_State *J, int32_t k);
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43 LJ_FUNC TRef lj_ir_k64(jit_State *J, IROp op, uint64_t u64);
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44 LJ_FUNC TRef lj_ir_knum_u64(jit_State *J, uint64_t u64);
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45 LJ_FUNC TRef lj_ir_knumint(jit_State *J, lua_Number n);
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46 LJ_FUNC TRef lj_ir_kint64(jit_State *J, uint64_t u64);
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47 LJ_FUNC TRef lj_ir_kgc(jit_State *J, GCobj *o, IRType t);
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48 LJ_FUNC TRef lj_ir_kptr_(jit_State *J, IROp op, void *ptr);
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49 LJ_FUNC TRef lj_ir_knull(jit_State *J, IRType t);
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50 LJ_FUNC TRef lj_ir_kslot(jit_State *J, TRef key, IRRef slot);
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51 LJ_FUNC TRef lj_ir_ktrace(jit_State *J);
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52
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53 #if LJ_64
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54 #define lj_ir_kintp(J, k) lj_ir_kint64(J, (uint64_t)(k))
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55 #else
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56 #define lj_ir_kintp(J, k) lj_ir_kint(J, (int32_t)(k))
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57 #endif
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58
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59 static LJ_AINLINE TRef lj_ir_knum(jit_State *J, lua_Number n)
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60 {
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61 TValue tv;
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62 tv.n = n;
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63 return lj_ir_knum_u64(J, tv.u64);
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64 }
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65
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66 #define lj_ir_kstr(J, str) lj_ir_kgc(J, obj2gco((str)), IRT_STR)
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67 #define lj_ir_ktab(J, tab) lj_ir_kgc(J, obj2gco((tab)), IRT_TAB)
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68 #define lj_ir_kfunc(J, func) lj_ir_kgc(J, obj2gco((func)), IRT_FUNC)
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69 #define lj_ir_kptr(J, ptr) lj_ir_kptr_(J, IR_KPTR, (ptr))
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70 #define lj_ir_kkptr(J, ptr) lj_ir_kptr_(J, IR_KKPTR, (ptr))
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71
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72 /* Special FP constants. */
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73 #define lj_ir_knum_zero(J) lj_ir_knum_u64(J, U64x(00000000,00000000))
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74 #define lj_ir_knum_one(J) lj_ir_knum_u64(J, U64x(3ff00000,00000000))
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75 #define lj_ir_knum_tobit(J) lj_ir_knum_u64(J, U64x(43380000,00000000))
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76
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77 /* Special 128 bit SIMD constants. */
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78 #define lj_ir_ksimd(J, idx) \
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79 lj_ir_ggfload(J, IRT_NUM, (uintptr_t)LJ_KSIMD(J, idx) - (uintptr_t)J2GG(J))
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80
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81 /* Access to constants. */
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82 LJ_FUNC void lj_ir_kvalue(lua_State *L, TValue *tv, const IRIns *ir);
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83
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84 /* Convert IR operand types. */
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85 LJ_FUNC TRef LJ_FASTCALL lj_ir_tonumber(jit_State *J, TRef tr);
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86 LJ_FUNC TRef LJ_FASTCALL lj_ir_tonum(jit_State *J, TRef tr);
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87 LJ_FUNC TRef LJ_FASTCALL lj_ir_tostr(jit_State *J, TRef tr);
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88
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89 /* Miscellaneous IR ops. */
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90 LJ_FUNC int lj_ir_numcmp(lua_Number a, lua_Number b, IROp op);
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91 LJ_FUNC int lj_ir_strcmp(GCstr *a, GCstr *b, IROp op);
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92 LJ_FUNC void lj_ir_rollback(jit_State *J, IRRef ref);
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93
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94 /* Emit IR instructions with on-the-fly optimizations. */
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95 LJ_FUNC TRef LJ_FASTCALL lj_opt_fold(jit_State *J);
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96 LJ_FUNC TRef LJ_FASTCALL lj_opt_cse(jit_State *J);
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97 LJ_FUNC TRef LJ_FASTCALL lj_opt_cselim(jit_State *J, IRRef lim);
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98
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99 /* Special return values for the fold functions. */
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100 enum {
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101 NEXTFOLD, /* Couldn't fold, pass on. */
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102 RETRYFOLD, /* Retry fold with modified fins. */
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103 KINTFOLD, /* Return ref for int constant in fins->i. */
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104 FAILFOLD, /* Guard would always fail. */
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105 DROPFOLD, /* Guard eliminated. */
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106 MAX_FOLD
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107 };
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108
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109 #define INTFOLD(k) ((J->fold.ins.i = (k)), (TRef)KINTFOLD)
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110 #define INT64FOLD(k) (lj_ir_kint64(J, (k)))
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111 #define CONDFOLD(cond) ((TRef)FAILFOLD + (TRef)(cond))
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112 #define LEFTFOLD (J->fold.ins.op1)
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113 #define RIGHTFOLD (J->fold.ins.op2)
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114 #define CSEFOLD (lj_opt_cse(J))
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115 #define EMITFOLD (lj_ir_emit(J))
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116
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117 /* Load/store forwarding. */
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118 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_aload(jit_State *J);
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119 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_hload(jit_State *J);
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120 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_uload(jit_State *J);
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121 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_fload(jit_State *J);
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122 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_xload(jit_State *J);
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123 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_alen(jit_State *J);
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124 LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_hrefk(jit_State *J);
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125 LJ_FUNC int LJ_FASTCALL lj_opt_fwd_href_nokey(jit_State *J);
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126 LJ_FUNC int LJ_FASTCALL lj_opt_fwd_tptr(jit_State *J, IRRef lim);
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127 LJ_FUNC int LJ_FASTCALL lj_opt_fwd_sbuf(jit_State *J, IRRef lim);
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128 LJ_FUNC int lj_opt_fwd_wasnonnil(jit_State *J, IROpT loadop, IRRef xref);
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129
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130 /* Dead-store elimination. */
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131 LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_ahstore(jit_State *J);
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132 LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_ustore(jit_State *J);
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133 LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_fstore(jit_State *J);
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134 LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_xstore(jit_State *J);
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135
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136 /* Narrowing. */
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137 LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_convert(jit_State *J);
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138 LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_index(jit_State *J, TRef key);
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139 LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_toint(jit_State *J, TRef tr);
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140 LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_tobit(jit_State *J, TRef tr);
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141 #if LJ_HASFFI
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142 LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_cindex(jit_State *J, TRef key);
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143 #endif
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144 LJ_FUNC TRef lj_opt_narrow_arith(jit_State *J, TRef rb, TRef rc,
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145 TValue *vb, TValue *vc, IROp op);
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146 LJ_FUNC TRef lj_opt_narrow_unm(jit_State *J, TRef rc, TValue *vc);
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147 LJ_FUNC TRef lj_opt_narrow_mod(jit_State *J, TRef rb, TRef rc, TValue *vb, TValue *vc);
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148 LJ_FUNC IRType lj_opt_narrow_forl(jit_State *J, cTValue *forbase);
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149
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150 /* Optimization passes. */
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151 LJ_FUNC void lj_opt_dce(jit_State *J);
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152 LJ_FUNC int lj_opt_loop(jit_State *J);
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153 #if LJ_SOFTFP32 || (LJ_32 && LJ_HASFFI)
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154 LJ_FUNC void lj_opt_split(jit_State *J);
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155 #else
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156 #define lj_opt_split(J) UNUSED(J)
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157 #endif
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158 LJ_FUNC void lj_opt_sink(jit_State *J);
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159
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160 #endif
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161
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162 #endif