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Teach LICM and AliasSetTracker about AccessesArgumentsReadonly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118618 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-11-09 19:58:21 +00:00
parent 40b6a19daa
commit cd93f3bbb9
2 changed files with 2 additions and 2 deletions
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2
lib/Analysis/AliasSetTracker.cpp
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@ -124,7 +124,7 @@ void AliasSet::addCallSite(CallSite CS, AliasAnalysis &AA) {
AliasAnalysis::ModRefBehavior Behavior = AA.getModRefBehavior(CS); AliasAnalysis::ModRefBehavior Behavior = AA.getModRefBehavior(CS);
if (Behavior == AliasAnalysis::DoesNotAccessMemory) if (Behavior == AliasAnalysis::DoesNotAccessMemory)
return; return;
else if (Behavior == AliasAnalysis::OnlyReadsMemory) { if (AliasAnalysis::onlyReadsMemory(Behavior)) {
AliasTy = MayAlias; AliasTy = MayAlias;
AccessTy |= Refs; AccessTy |= Refs;
return; return;

2
lib/Transforms/Scalar/LICM.cpp
View File

@ -412,7 +412,7 @@ bool LICM::canSinkOrHoistInst(Instruction &I) {
AliasAnalysis::ModRefBehavior Behavior = AA->getModRefBehavior(CI); AliasAnalysis::ModRefBehavior Behavior = AA->getModRefBehavior(CI);
if (Behavior == AliasAnalysis::DoesNotAccessMemory) if (Behavior == AliasAnalysis::DoesNotAccessMemory)
return true; return true;
else if (Behavior == AliasAnalysis::OnlyReadsMemory) { if (AliasAnalysis::onlyReadsMemory(Behavior)) {
// If this call only reads from memory and there are no writes to memory // If this call only reads from memory and there are no writes to memory
// in the loop, we can hoist or sink the call as appropriate. // in the loop, we can hoist or sink the call as appropriate.
bool FoundMod = false; bool FoundMod = false;