1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp
index 172459beaea..bc2a9d1391b 100644
--- a/llvm/lib/Transforms/Scalar/LICM.cpp
+++ b/llvm/lib/Transforms/Scalar/LICM.cpp
@@ -124,8 +124,13 @@ struct LegacyLICMPass : public LoopPass {
   }
 
   bool runOnLoop(Loop *L, LPPassManager &LPM) override {
-    if (skipLoop(L))
+    if (skipLoop(L)) {
+      // If we have run LICM on a previous loop but now we are skipping
+      // (because we've hit the opt-bisect limit), we need to clear the
+      // loop alias information.
+      LICM.getLoopToAliasSetMap().clear();
       return false;
+    }
 
     auto *SE = getAnalysisIfAvailable<ScalarEvolutionWrapperPass>();
     return LICM.runOnLoop(L,