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Add helper method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5753 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -142,6 +142,14 @@ public:
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return dynamic_cast<AnalysisType*>(Resolver->getAnalysisToUpdate(PI));
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}
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/// mustPreserveAnalysisID - This method serves the same function as
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/// getAnalysisToUpdate, but works if you just have an AnalysisID. This
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/// obviously cannot give you a properly typed instance of the class if you
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/// don't have the class name available (use getAnalysisToUpdate if you do),
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/// but it can tell you if you need to preserve the pass at least.
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///
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bool mustPreserveAnalysisID(const PassInfo *AnalysisID) const;
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/// getAnalysis<AnalysisType>() - This function is used by subclasses to get
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/// to the analysis information that they claim to use by overriding the
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/// getAnalysisUsage function.
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@ -142,6 +142,10 @@ void Pass::addToPassManager(PassManagerT<Module> *PM, AnalysisUsage &AU) {
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PM->addPass(this, AU);
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}
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bool Pass::mustPreserveAnalysisID(const PassInfo *AnalysisID) const {
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return Resolver->getAnalysisToUpdate(AnalysisID) != 0;
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}
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// dumpPassStructure - Implement the -debug-passes=Structure option
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void Pass::dumpPassStructure(unsigned Offset) {
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std::cerr << std::string(Offset*2, ' ') << getPassName() << "\n";
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