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Don't recalculate the loop info and loop dominators analyses if they're

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preserved.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45596 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2008-01-04 20:54:55 +00:00
parent b670a1737b
commit 67d65bb69d
8 changed files with 34 additions and 6 deletions
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2
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -60,6 +60,8 @@ namespace {
void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addPreserved<LiveVariables>();
AU.addRequired<LiveVariables>();
AU.addPreservedID(MachineLoopInfoID);
AU.addPreservedID(MachineDominatorsID);
AU.addPreservedID(PHIEliminationID);
AU.addRequiredID(PHIEliminationID);
AU.addRequiredID(TwoAddressInstructionPassID);