[analyzer] Dump a reproducible, deterministic ID of program state to exploded graph

Differential Revision: https://reviews.llvm.org/D51395

llvm-svn: 341600

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/StaticAnalyzer/Core/ProgramState.cpp b/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
index 94e2e00d8bb..361255b4b18 100644
--- a/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ProgramState.cpp
@@ -69,6 +69,13 @@ ProgramState::~ProgramState() {
     stateMgr->getStoreManager().decrementReferenceCount(store);
 }
 
+int64_t ProgramState::getID() const {
+  Optional<int64_t> Out = getStateManager().Alloc.identifyObject(this);
+  assert(Out && "Wrong allocator used");
+  assert(*Out % alignof(ProgramState) == 0 && "Wrong alignment information");
+  return *Out / alignof(ProgramState);
+}
+
 ProgramStateManager::ProgramStateManager(ASTContext &Ctx,
                                          StoreManagerCreator CreateSMgr,
                                          ConstraintManagerCreator CreateCMgr,