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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90002 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-11-27 08:40:14 +00:00
parent e95035aea4
commit 9763487bd5
1 changed files with 5 additions and 1 deletions
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6
lib/Analysis/MemoryDependenceAnalysis.cpp
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@ -1004,8 +1004,12 @@ getNonLocalPointerDepFromBB(Value *Pointer, uint64_t PointeeSize,
Value *PredPtr = PHITranslatePointer(PtrInst, BB, Pred, TD);
// If PHI translation fails, bail out.
if (PredPtr == 0)
if (PredPtr == 0) {
// FIXME: Instead of modelling this as a phi trans failure, we should
// model this as a clobber in the one predecessor. This will allow
// us to PRE values that are only available in some preds but not all.
goto PredTranslationFailure;
}
// Check to see if we have already visited this pred block with another
// pointer. If so, we can't do this lookup. This failure can occur