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Unify Lua number to FFI integer conversions.

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Phew. #1411
This commit is contained in:
Mike Pall
2025-11-27 17:45:17 +01:00
parent 3215838aa7
commit f80b349d54
41 changed files with 1070 additions and 434 deletions
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23
src/lj_ir.c
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@@ -248,28 +248,15 @@ TRef lj_ir_kint64(jit_State *J, uint64_t u64)
return lj_ir_k64(J, IR_KINT64, u64);
}
/* Check whether a number is int and return it. -0 is NOT considered an int. */
static int numistrueint(lua_Number n, int32_t *kp)
{
int32_t k = lj_num2int(n);
if (n == (lua_Number)k) {
if (kp) *kp = k;
if (k == 0) { /* Special check for -0. */
TValue tv;
setnumV(&tv, n);
if (tv.u32.hi != 0)
return 0;
}
return 1;
}
return 0;
}
/* Intern number as int32_t constant if possible, otherwise as FP constant. */
TRef lj_ir_knumint(jit_State *J, lua_Number n)
{
int64_t i64;
int32_t k;
if (numistrueint(n, &k))
TValue tv;
setnumV(&tv, n);
/* -0 is NOT considered an int. */
if (lj_num2int_check(n, i64, k) && !tvismzero(&tv))
return lj_ir_kint(J, k);
else
return lj_ir_knum(J, n);