forked from OSchip/llvm-project
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//==- GRBlockCounter.h - ADT for counting block visits -------------*- C++ -*-//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines GRBlockCounter, an abstract data type used to count
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// the number of times a given block has been visited along a path
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// analyzed by GRCoreEngine.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/PathSensitive/GRBlockCounter.h"
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#include "llvm/ADT/ImmutableMap.h"
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using namespace clang;
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typedef llvm::ImmutableMap<unsigned,unsigned> CountMap;
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static inline CountMap GetMap(void* D) {
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return CountMap(static_cast<CountMap::TreeTy*>(D));
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}
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static inline CountMap::Factory& GetFactory(void* F) {
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return *static_cast<CountMap::Factory*>(F);
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}
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unsigned GRBlockCounter::getNumVisited(unsigned BlockID) const {
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CountMap M = GetMap(Data);
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CountMap::TreeTy* T = M.SlimFind(BlockID);
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return T ? T->getValue().second : 0;
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}
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GRBlockCounter::Factory::Factory(llvm::BumpPtrAllocator& Alloc) {
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F = new CountMap::Factory(Alloc);
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}
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GRBlockCounter::Factory::~Factory() {
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delete static_cast<CountMap::Factory*>(F);
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}
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GRBlockCounter
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GRBlockCounter::Factory::IncrementCount(GRBlockCounter BC, unsigned BlockID) {
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return GRBlockCounter(GetFactory(F).Add(GetMap(BC.Data), BlockID,
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BC.getNumVisited(BlockID)+1).getRoot());
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}
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GRBlockCounter
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GRBlockCounter::Factory::GetEmptyCounter() {
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return GRBlockCounter(GetFactory(F).GetEmptyMap().getRoot());
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}
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