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Generate EQ(HREF, niltv) for load path, too (better CSE).

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This commit is contained in:
Mike Pall 2010-03-28 06:49:09 +02:00
parent 1130ade4de
commit e4bca95451
1 changed files with 7 additions and 1 deletions
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8
src/lj_record.c
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@ -981,7 +981,13 @@ static TRef rec_idx(jit_State *J, RecordIndex *ix)
if (ix->val == 0) { /* Indexed load */ if (ix->val == 0) { /* Indexed load */
IRType t = itype2irt(oldv); IRType t = itype2irt(oldv);
TRef res = emitir(IRTG(loadop, t), xref, 0); TRef res;
if (oldv == niltvg(J2G(J))) {
emitir(IRTG(IR_EQ, IRT_PTR), xref, lj_ir_kptr(J, niltvg(J2G(J))));
res = TREF_NIL;
} else {
res = emitir(IRTG(loadop, t), xref, 0);
}
if (t == IRT_NIL && ix->idxchain && rec_mm_lookup(J, ix, MM_index)) if (t == IRT_NIL && ix->idxchain && rec_mm_lookup(J, ix, MM_index))
goto handlemm; goto handlemm;
if (irtype_ispri(t)) res = TREF_PRI(t); /* Canonicalize primitives. */ if (irtype_ispri(t)) res = TREF_PRI(t); /* Canonicalize primitives. */