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optimized post_inc and post_dec

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Fabrice Bellard
2025-10-07 19:10:27 +02:00
parent 8e8eefb922
commit e5de89fb3f
1 changed files with 35 additions and 4 deletions
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39
quickjs.c
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@@ -19045,11 +19045,42 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
} }
BREAK; BREAK;
CASE(OP_post_inc): CASE(OP_post_inc):
{
JSValue op1;
int val;
op1 = sp[-1];
if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) {
val = JS_VALUE_GET_INT(op1);
if (unlikely(val == INT32_MAX))
goto post_inc_slow;
sp[0] = JS_NewInt32(ctx, val + 1);
} else {
post_inc_slow:
sf->cur_pc = pc;
if (js_post_inc_slow(ctx, sp, opcode))
goto exception;
}
sp++;
}
BREAK;
CASE(OP_post_dec): CASE(OP_post_dec):
sf->cur_pc = pc; {
if (js_post_inc_slow(ctx, sp, opcode)) JSValue op1;
goto exception; int val;
sp++; op1 = sp[-1];
if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) {
val = JS_VALUE_GET_INT(op1);
if (unlikely(val == INT32_MIN))
goto post_dec_slow;
sp[0] = JS_NewInt32(ctx, val - 1);
} else {
post_dec_slow:
sf->cur_pc = pc;
if (js_post_inc_slow(ctx, sp, opcode))
goto exception;
}
sp++;
}
BREAK; BREAK;
CASE(OP_inc_loc): CASE(OP_inc_loc):
{ {