1 files changed, 11 insertions, 5 deletions
diff --git a/include/llvm/Transforms/Scalar/Reassociate.h b/include/llvm/Transforms/Scalar/Reassociate.h
index ba7586dffd9d..2db8d8ce309c 100644
--- a/include/llvm/Transforms/Scalar/Reassociate.h
+++ b/include/llvm/Transforms/Scalar/Reassociate.h
@@ -1,9 +1,8 @@
 //===- Reassociate.h - Reassociate binary expressions -----------*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -83,7 +82,14 @@ protected:
   static const unsigned GlobalReassociateLimit = 10;
   static const unsigned NumBinaryOps =
       Instruction::BinaryOpsEnd - Instruction::BinaryOpsBegin;
-  DenseMap<std::pair<Value *, Value *>, unsigned> PairMap[NumBinaryOps];
+
+  struct PairMapValue {
+    WeakVH Value1;
+    WeakVH Value2;
+    unsigned Score;
+    bool isValid() const { return Value1 && Value2; }
+  };
+  DenseMap<std::pair<Value *, Value *>, PairMapValue> PairMap[NumBinaryOps];
 
   bool MadeChange;