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MergedLoadStoreMotion preserves MemoryDependenceAnalysis, it does not require it.

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(It already was coded assuming it can sometimes be null, so no other changes are necessary)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Berlin 2015-05-22 00:13:05 +00:00
parent ab0b15dff8
commit 4ea24c84fb
1 changed files with 2 additions and 2 deletions
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4
lib/Transforms/Scalar/MergedLoadStoreMotion.cpp
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@ -117,8 +117,8 @@ private:
// This transformation requires dominator postdominator info
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.addRequired<TargetLibraryInfoWrapperPass>();
AU.addRequired<MemoryDependenceAnalysis>();
AU.addRequired<AliasAnalysis>();
AU.addPreserved<MemoryDependenceAnalysis>();
AU.addPreserved<AliasAnalysis>();
}
@ -580,7 +580,7 @@ bool MergedLoadStoreMotion::mergeStores(BasicBlock *T) {
/// \brief Run the transformation for each function
///
bool MergedLoadStoreMotion::runOnFunction(Function &F) {
MD = &getAnalysis<MemoryDependenceAnalysis>();
MD = getAnalysisIfAvailable<MemoryDependenceAnalysis>();
AA = &getAnalysis<AliasAnalysis>();
bool Changed = false;