diff options
Diffstat (limited to 'include/llvm/PassAnalysisSupport.h')
-rw-r--r-- | include/llvm/PassAnalysisSupport.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/llvm/PassAnalysisSupport.h b/include/llvm/PassAnalysisSupport.h index 3234e91..75434a2 100644 --- a/include/llvm/PassAnalysisSupport.h +++ b/include/llvm/PassAnalysisSupport.h @@ -127,6 +127,9 @@ public: return ResultPass; } + // Find pass that is implementing PI. Initialize pass for Function F. + Pass *findImplPass(Pass *P, const PassInfo *PI, Function &F); + void addAnalysisImplsPair(const PassInfo *PI, Pass *P) { std::pair<const PassInfo*, Pass*> pir = std::make_pair(PI,P); AnalysisImpls.push_back(pir); @@ -197,6 +200,39 @@ AnalysisType &Pass::getAnalysisID(const PassInfo *PI) const { return *Result; } +/// getAnalysis<AnalysisType>() - This function is used by subclasses to get +/// to the analysis information that they claim to use by overriding the +/// getAnalysisUsage function. +/// +template<typename AnalysisType> +AnalysisType &Pass::getAnalysis(Function &F) { + assert(Resolver &&"Pass has not been inserted into a PassManager object!"); + + return getAnalysisID<AnalysisType>(getClassPassInfo<AnalysisType>(), F); +} + +template<typename AnalysisType> +AnalysisType &Pass::getAnalysisID(const PassInfo *PI, Function &F) { + assert(PI && "getAnalysis for unregistered pass!"); + assert(Resolver&&"Pass has not been inserted into a PassManager object!"); + // PI *must* appear in AnalysisImpls. Because the number of passes used + // should be a small number, we just do a linear search over a (dense) + // vector. + Pass *ResultPass = Resolver->findImplPass(this, PI, F); + assert (ResultPass && + "getAnalysis*() called on an analysis that was not " + "'required' by pass!"); + + // Because the AnalysisType may not be a subclass of pass (for + // AnalysisGroups), we must use dynamic_cast here to potentially adjust the + // return pointer (because the class may multiply inherit, once from pass, + // once from AnalysisType). + // + AnalysisType *Result = dynamic_cast<AnalysisType*>(ResultPass); + assert(Result && "Pass does not implement interface required!"); + return *Result; +} + } // End llvm namespace #endif |