Add a new BFS GRWorkList and make it the default worklist model for
GRCoreEngine. This tends to result in shorter paths for pathological cases.
llvm-svn: 70585
diff --git a/clang/lib/Analysis/GRCoreEngine.cpp b/clang/lib/Analysis/GRCoreEngine.cpp
index e4f27b6..46a2173 100644
--- a/clang/lib/Analysis/GRCoreEngine.cpp
+++ b/clang/lib/Analysis/GRCoreEngine.cpp
@@ -47,13 +47,35 @@
return U;
}
};
+
+class VISIBILITY_HIDDEN BFS : public GRWorkList {
+ std::queue<GRWorkListUnit> Queue;
+public:
+ virtual bool hasWork() const {
+ return !Queue.empty();
+ }
+
+ virtual void Enqueue(const GRWorkListUnit& U) {
+ Queue.push(U);
+ }
+
+ virtual GRWorkListUnit Dequeue() {
+ // Don't use const reference. The subsequent pop_back() might make it
+ // unsafe.
+ GRWorkListUnit U = Queue.front();
+ Queue.pop();
+ return U;
+ }
+};
+
} // end anonymous namespace
// Place the dstor for GRWorkList here because it contains virtual member
// functions, and we the code for the dstor generated in one compilation unit.
GRWorkList::~GRWorkList() {}
-GRWorkList* GRWorkList::MakeDFS() { return new DFS(); }
+GRWorkList *GRWorkList::MakeDFS() { return new DFS(); }
+GRWorkList *GRWorkList::MakeBFS() { return new BFS(); }
namespace {
class VISIBILITY_HIDDEN BFSBlockDFSContents : public GRWorkList {