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Move FunctionPass::doesNotModifyCFG to AnalysisUsage::preservesCFG()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2384 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -138,18 +138,6 @@ struct FunctionPass : public Pass {
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//
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bool run(Function *F);
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protected:
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// doesNotModifyCFG - This function should be called by our subclasses to
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// implement the getAnalysisUsage virtual function, iff they do not:
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//
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// 1. Add or remove basic blocks from the function
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// 2. Modify terminator instructions in any way.
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//
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// This function annotates the AnalysisUsage info object to say that analyses
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// that only depend on the CFG are preserved by this pass.
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//
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void doesNotModifyCFG(AnalysisUsage &Info);
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private:
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friend class PassManagerT<Module>;
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friend class PassManagerT<Function>;
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@ -277,6 +265,17 @@ public:
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void setPreservesAll() { PreservesAll = true; }
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bool preservesAll() const { return PreservesAll; }
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// preservesCFG - This function should be called to by the pass, iff they do
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// not:
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//
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// 1. Add or remove basic blocks from the function
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// 2. Modify terminator instructions in any way.
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//
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// This function annotates the AnalysisUsage info object to say that analyses
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// that only depend on the CFG are preserved by this pass.
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//
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void preservesCFG();
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const std::vector<AnalysisID> &getRequiredSet() const { return Required; }
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const std::vector<AnalysisID> &getPreservedSet() const { return Preserved; }
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const std::vector<AnalysisID> &getProvidedSet() const { return Provided; }
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@ -24,6 +24,21 @@ void AnalysisResolver::setAnalysisResolver(Pass *P, AnalysisResolver *AR) {
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P->Resolver = AR;
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}
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// preservesCFG - This function should be called to by the pass, iff they do
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// not:
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//
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// 1. Add or remove basic blocks from the function
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// 2. Modify terminator instructions in any way.
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//
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// This function annotates the AnalysisUsage info object to say that analyses
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// that only depend on the CFG are preserved by this pass.
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//
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void AnalysisUsage::preservesCFG() {
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// FIXME: implement preservesCFG
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}
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//===----------------------------------------------------------------------===//
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// PassManager implementation - The PassManager class is a simple Pimpl class
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// that wraps the PassManagerT template.
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@ -142,20 +157,6 @@ void FunctionPass::addToPassManager(PassManagerT<Function> *PM,
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PM->addPass(this, AU);
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}
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// doesNotModifyCFG - This function should be called by our subclasses to
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// implement the getAnalysisUsage virtual function, iff they do not:
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//
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// 1. Add or remove basic blocks from the function
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// 2. Modify terminator instructions in any way.
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//
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// This function annotates the AnalysisUsage info object to say that analyses
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// that only depend on the CFG are preserved by this pass.
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//
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void FunctionPass::doesNotModifyCFG(AnalysisUsage &Info) {
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}
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//===----------------------------------------------------------------------===//
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// BasicBlockPass Implementation
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//
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