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Free and vaarg are not really volatile.

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llvm-svn: 51407
This commit is contained in:
Chris Lattner 2008-05-22 03:23:06 +00:00
parent fd83f89e21
commit 5a09a5fb88
1 changed files with 2 additions and 9 deletions
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11
lib/Analysis/AliasSetTracker.cpp
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@ -284,20 +284,13 @@ bool AliasSetTracker::add(StoreInst *SI) {
bool AliasSetTracker::add(FreeInst *FI) { bool AliasSetTracker::add(FreeInst *FI) {
bool NewPtr; bool NewPtr;
AliasSet &AS = addPointer(FI->getOperand(0), ~0, addPointer(FI->getOperand(0), ~0, AliasSet::Mods, NewPtr);
AliasSet::Mods, NewPtr);
// Free operations are volatile ops (cannot be moved).
AS.setVolatile();
return NewPtr; return NewPtr;
} }
bool AliasSetTracker::add(VAArgInst *VAAI) { bool AliasSetTracker::add(VAArgInst *VAAI) {
bool NewPtr; bool NewPtr;
AliasSet &AS = addPointer(VAAI->getOperand(0), ~0, AliasSet::ModRef, NewPtr); addPointer(VAAI->getOperand(0), ~0, AliasSet::ModRef, NewPtr);
// Treat vaarg instructions as volatile (not to be moved).
AS.setVolatile();
return NewPtr; return NewPtr;
} }