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Add new -no-aa implementation

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llvm-svn: 5641
This commit is contained in:
Chris Lattner 2003-02-26 19:57:10 +00:00
parent 721f9fc770
commit 4e622afb23
1 changed files with 19 additions and 0 deletions
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19
lib/Analysis/AliasAnalysis.cpp
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@ -97,3 +97,22 @@ bool AliasAnalysis::canInstructionRangeModify(const Instruction &I1,
extern void BasicAAStub();
static IncludeFile INCLUDE_BASICAA_CPP((void*)&BasicAAStub);
namespace {
struct NoAA : public ImmutablePass, public AliasAnalysis {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AliasAnalysis::getAnalysisUsage(AU);
}
virtual void initializePass() {
InitializeAliasAnalysis(this);
}
};
// Register this pass...
RegisterOpt<NoAA>
X("no-aa", "No Alias Analysis (always returns 'may' alias)");
// Declare that we implement the AliasAnalysis interface
RegisterAnalysisGroup<AliasAnalysis, NoAA> Y;
} // End of anonymous namespace