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-rw-r--r--llvm/lib/Transforms/Utils/ImplicitControlFlowTracking.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/ImplicitControlFlowTracking.cpp b/llvm/lib/Transforms/Utils/ImplicitControlFlowTracking.cpp
index a5b6c54533a..0e1591f42ad 100644
--- a/llvm/lib/Transforms/Utils/ImplicitControlFlowTracking.cpp
+++ b/llvm/lib/Transforms/Utils/ImplicitControlFlowTracking.cpp
@@ -24,7 +24,9 @@ const Instruction *
ImplicitControlFlowTracking::getFirstICFI(const BasicBlock *BB) {
if (!KnownBlocks.count(BB))
fill(BB);
- return FirstImplicitControlFlowInsts.lookup(BB);
+ auto *FirstICF = FirstImplicitControlFlowInsts.lookup(BB);
+ assert((!FirstICF || FirstICF->getParent() == BB) && "Inconsistent cache!");
+ return FirstICF;
}
bool ImplicitControlFlowTracking::hasICF(const BasicBlock *BB) {
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