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Extend the getDependence query with support for PHI translation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113521 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-09-09 18:37:31 +00:00
parent e744541788
commit c8ddbdabb6
3 changed files with 64 additions and 15 deletions
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9
lib/Analysis/BasicAliasAnalysis.cpp
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@ -172,8 +172,10 @@ namespace {
}
virtual DependenceResult getDependence(const Instruction *First,
const Value *FirstPHITranslatedAddr,
DependenceQueryFlags FirstFlags,
const Instruction *Second,
const Value *SecondPHITranslatedAddr,
DependenceQueryFlags SecondFlags) {
return Unknown;
}
@ -531,8 +533,10 @@ namespace {
virtual ModRefBehavior getModRefBehavior(const Function *F);
virtual DependenceResult getDependence(const Instruction *First,
const Value *FirstPHITranslatedAddr,
DependenceQueryFlags FirstFlags,
const Instruction *Second,
const Value *SecondPHITranslatedAddr,
DependenceQueryFlags SecondFlags);
/// getAdjustedAnalysisPointer - This method is used when a pass implements
@ -748,11 +752,14 @@ BasicAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
AliasAnalysis::DependenceResult
BasicAliasAnalysis::getDependence(const Instruction *First,
const Value *FirstPHITranslatedAddr,
DependenceQueryFlags FirstFlags,
const Instruction *Second,
const Value *SecondPHITranslatedAddr,
DependenceQueryFlags SecondFlags) {
// We don't have anything special to say yet.
return getDependenceViaModRefInfo(First, FirstFlags, Second, SecondFlags);
return getDependenceViaModRefInfo(First, FirstPHITranslatedAddr, FirstFlags,
Second, SecondPHITranslatedAddr, SecondFlags);
}
/// aliasGEP - Provide a bunch of ad-hoc rules to disambiguate a GEP instruction