Class for calculating and caching the underlying values of phis in a function.
Initially the PhiValues is empty, and gets incrementally populated whenever it is queried.
Definition at line 42 of file PhiValues.h.
Definition at line 44 of file PhiValues.h.
Definition at line 47 of file PhiValues.h.
References F, getValuesForPhi(), invalidate(), invalidateValue(), print(), and releaseMemory().
Get the underlying values of a phi.
This returns the cached value if PN has previously been processed, otherwise it processes it first.
Definition at line 113 of file PhiValues.cpp.
Referenced by MergeAliasResults(), PhiValues(), and llvm::PhiValuesPrinterPass::run().
Definition at line 26 of file PhiValues.cpp.
References assert(), llvm::SmallVectorTemplateCommon< T >::back(), llvm::SmallVectorBase::empty(), llvm::PreservedAnalyses::getChecker(), llvm::PHINode::incoming_values(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T >::push_back().
Notify PhiValues that the cached information using V is no longer valid.
Whenever a phi has its operands modified the cached values for that phi (and the phis that use that phi) become invalid. A user of PhiValues has to notify it of this by calling invalidateValue on either the operand or the phi, which will then clear the relevant cached information.
Definition at line 123 of file PhiValues.cpp.
References N, and llvm::SmallVectorTemplateBase< T >::push_back().
Referenced by llvm::MemoryDependenceResults::invalidateCachedPointerInfo(), PhiValues(), and llvm::MemoryDependenceResults::removeInstruction().
Print out the values currently in the cache.
Definition at line 149 of file PhiValues.cpp.
Referenced by PhiValues(), and llvm::PhiValuesPrinterPass::run().
Free the memory used by this class.
Definition at line 143 of file PhiValues.cpp.
Referenced by llvm::PhiValuesWrapperPass::getResult(), and PhiValues().