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do not rewrite overwritten slots in memopt

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Quentin Carbonneaux 2016-04-18 13:25:32 -04:00
parent 47a0556a16
commit b8709501f9
1 changed files with 2 additions and 0 deletions
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2
mem.c
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@ -43,6 +43,8 @@ memopt(Fn *fn)
/* specific to NAlign == 3 */
assert(rtype(i->to) == RTmp);
t = &fn->tmp[i->to.val];
if (t->ndef != 1)
goto Skip;
k = -1;
s = -1;
for (u=t->use; u != &t->use[t->nuse]; u++) {