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Allow a pass to obtain an analysis result for updating.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2221 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-04-10 20:30:44 +00:00
parent b49cebb26a
commit 0e52e3e221
1 changed files with 20 additions and 0 deletions
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20
include/llvm/Pass.h
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@ -101,6 +101,19 @@ protected:
return *(AnalysisType*)Resolver->getAnalysis(AID);
}
// getAnalysisToUpdate<AnalysisType>() - This function is used by subclasses
// to get to the analysis information that might be around that needs to be
// updated. This is different than getAnalysis in that it can fail (ie the
// analysis results haven't been computed), so should only be used if you
// provide the capability to update an analysis that exists.
//
template<typename AnalysisType>
AnalysisType *getAnalysisToUpdate(AnalysisID AID = AnalysisType::ID) {
assert(Resolver && "Pass not resident in a PassManager object!");
return (AnalysisType*)Resolver->getAnalysisToUpdate(AID);
}
private:
friend class PassManagerT<Module>;
friend class PassManagerT<Function>;
@ -249,6 +262,13 @@ struct AnalysisResolver {
assert(Result && "Pass has an incorrect analysis uses set!");
return Result;
}
// getAnalysisToUpdate - Return an analysis result or null if it doesn't exist
Pass *getAnalysisToUpdate(AnalysisID ID) {
Pass *Result = getAnalysisOrNullUp(ID);
return Result;
}
virtual unsigned getDepth() const = 0;
virtual void markPassUsed(AnalysisID P, Pass *User) = 0;