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Fix 64 bit case of (SUB x x) and (BXOR x x) FOLD rules.

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This commit is contained in:
Mike Pall 2011-01-28 02:17:35 +01:00
parent 07d8a53b39
commit 6fee0002b9
1 changed files with 2 additions and 2 deletions
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4
src/lj_opt_fold.c
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@ -1019,7 +1019,7 @@ LJFOLD(SUBOV any any)
LJFOLDF(simplify_intsub) LJFOLDF(simplify_intsub)
{ {
if (fins->op1 == fins->op2 && !irt_isnum(fins->t)) /* i - i ==> 0 */ if (fins->op1 == fins->op2 && !irt_isnum(fins->t)) /* i - i ==> 0 */
return INTFOLD(0); return irt_is64(fins->t) ? INT64FOLD(0) : INTFOLD(0);
return NEXTFOLD; return NEXTFOLD;
} }
@ -1492,7 +1492,7 @@ LJFOLD(BXOR any any)
LJFOLDF(comm_bxor) LJFOLDF(comm_bxor)
{ {
if (fins->op1 == fins->op2) /* i xor i ==> 0 */ if (fins->op1 == fins->op2) /* i xor i ==> 0 */
return INTFOLD(0); return irt_is64(fins->t) ? INT64FOLD(0) : INTFOLD(0);
return fold_comm_swap(J); return fold_comm_swap(J);
} }