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MergedLoadStoreMotion preserves MemoryDependenceAnalysis, it does not require it.
(It already was coded assuming it can sometimes be null, so no other changes are necessary) llvm-svn: 237978
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@ -117,8 +117,8 @@ private:
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// This transformation requires dominator postdominator info
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.addRequired<TargetLibraryInfoWrapperPass>();
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AU.addRequired<MemoryDependenceAnalysis>();
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AU.addRequired<AliasAnalysis>();
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AU.addPreserved<MemoryDependenceAnalysis>();
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AU.addPreserved<AliasAnalysis>();
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}
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@ -580,7 +580,7 @@ bool MergedLoadStoreMotion::mergeStores(BasicBlock *T) {
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/// \brief Run the transformation for each function
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///
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bool MergedLoadStoreMotion::runOnFunction(Function &F) {
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MD = &getAnalysis<MemoryDependenceAnalysis>();
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MD = getAnalysisIfAvailable<MemoryDependenceAnalysis>();
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AA = &getAnalysis<AliasAnalysis>();
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bool Changed = false;
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