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Remove some checks for StrongPHIElim. These checks make it impossible to use an

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alternative register allocator that does not require LiveIntervals by specifying
it on the command-line for a target that has StrongPHIElimination enabled by
default.

These checks are pretty meaningless anyways, since StrongPHIElimination and
PHIElimination are never used at the same time.

llvm-svn: 122176
This commit is contained in:
Cameron Zwarich 2010-12-19 18:03:27 +00:00
parent c7876edb16
commit 163792fb1f
3 changed files with 6 additions and 12 deletions
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6
lib/CodeGen/PreAllocSplitting.cpp
View File

@ -107,10 +107,8 @@ namespace {
AU.addPreserved<LiveStacks>();
AU.addPreserved<RegisterCoalescer>();
AU.addPreserved<CalculateSpillWeights>();
if (StrongPHIElim)
AU.addPreservedID(StrongPHIEliminationID);
else
AU.addPreservedID(PHIEliminationID);
AU.addPreservedID(StrongPHIEliminationID);
AU.addPreservedID(PHIEliminationID);
AU.addRequired<MachineDominatorTree>();
AU.addRequired<MachineLoopInfo>();
AU.addRequired<VirtRegMap>();

6
lib/CodeGen/SimpleRegisterCoalescing.cpp
View File

@ -93,10 +93,8 @@ void SimpleRegisterCoalescing::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<MachineLoopInfo>();
AU.addPreserved<MachineLoopInfo>();
AU.addPreservedID(MachineDominatorsID);
if (StrongPHIElim)
AU.addPreservedID(StrongPHIEliminationID);
else
AU.addPreservedID(PHIEliminationID);
AU.addPreservedID(StrongPHIEliminationID);
AU.addPreservedID(PHIEliminationID);
AU.addPreservedID(TwoAddressInstructionPassID);
MachineFunctionPass::getAnalysisUsage(AU);
}

6
lib/CodeGen/TwoAddressInstructionPass.cpp
View File

@ -148,10 +148,8 @@ namespace {
AU.addPreserved<LiveVariables>();
AU.addPreservedID(MachineLoopInfoID);
AU.addPreservedID(MachineDominatorsID);
if (StrongPHIElim)
AU.addPreservedID(StrongPHIEliminationID);
else
AU.addPreservedID(PHIEliminationID);
AU.addPreservedID(StrongPHIEliminationID);
AU.addPreservedID(PHIEliminationID);
MachineFunctionPass::getAnalysisUsage(AU);
}