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LiveIntervalAnalysis: Remove LiveVariables requirement

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This requirement was a huge hack to keep LiveVariables alive because it
was optionally used by TwoAddressInstructionPass and PHIElimination.
However we have AnalysisUsage::addUsedIfAvailable() which we can use in
those passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260806 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2016-02-13 04:35:31 +00:00
parent 626ceb277f
commit 7eaa93aa2b
3 changed files with 3 additions and 7 deletions
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lib/CodeGen/TwoAddressInstructionPass.cpp
+1
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@@ -157,6 +157,7 @@ public:
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesCFG();
AU.addRequired<AAResultsWrapperPass>();
AU.addUsedIfAvailable<LiveVariables>();
AU.addPreserved<LiveVariables>();
AU.addPreserved<SlotIndexes>();
AU.addPreserved<LiveIntervals>();