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Fix FOLD rule for STRREF of SNEW.

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Mike Pall 2014-05-15 17:03:28 +02:00
parent 624260f831
commit 8a38af2f99
1 changed files with 8 additions and 7 deletions
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3
src/lj_opt_fold.c
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@ -505,14 +505,15 @@ LJFOLDF(kfold_strref_snew)
} else {
/* Reassociate: strref(snew(strref(str, a), len), b) ==> strref(str, a+b) */
IRIns *ir = IR(fleft->op1);
if (ir->o == IR_STRREF) {
IRRef1 str = ir->op1; /* IRIns * is not valid across emitir. */
lua_assert(ir->o == IR_STRREF);
PHIBARRIER(ir);
fins->op2 = emitir(IRTI(IR_ADD), ir->op2, fins->op2); /* Clobbers fins! */
fins->op1 = str;
fins->ot = IRT(IR_STRREF, IRT_P32);
return RETRYFOLD;
}
}
return NEXTFOLD;
}