[GVNHoist] Preserve AAResults.

Resolves PR38906, PR40898.

diff --git a/llvm/lib/Transforms/Scalar/GVNHoist.cpp b/llvm/lib/Transforms/Scalar/GVNHoist.cpp
index c87e414..a343fb7 100644 (file)
--- a/llvm/lib/Transforms/Scalar/GVNHoist.cpp
+++ b/llvm/lib/Transforms/Scalar/GVNHoist.cpp
@@ -1168,6 +1168,7 @@ public:
     AU.addPreserved<DominatorTreeWrapperPass>();
     AU.addPreserved<MemorySSAWrapperPass>();
     AU.addPreserved<GlobalsAAWrapperPass>();
+    AU.addPreserved<AAResultsWrapperPass>();
   }
 };