diff options
Diffstat (limited to 'llvm/lib/Analysis/AliasSetTracker.cpp')
| -rw-r--r-- | llvm/lib/Analysis/AliasSetTracker.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/AliasSetTracker.cpp b/llvm/lib/Analysis/AliasSetTracker.cpp index 23c598d4edb..0470247cf6c 100644 --- a/llvm/lib/Analysis/AliasSetTracker.cpp +++ b/llvm/lib/Analysis/AliasSetTracker.cpp @@ -174,7 +174,8 @@ void AliasSet::addUnknownInst(Instruction *I, AliasAnalysis &AA) { // but don't actually modify any specific memory location. using namespace PatternMatch; bool MayWriteMemory = I->mayWriteToMemory() && - !match(I, m_Intrinsic<Intrinsic::experimental_guard>()); + !match(I, m_Intrinsic<Intrinsic::experimental_guard>()) && + !(I->use_empty() && match(I, m_Intrinsic<Intrinsic::invariant_start>())); if (!MayWriteMemory) { Alias = SetMayAlias; Access |= RefAccess; |
