From f0dd3c975ccde40f3e409557c9b8fb22e8eb201d Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Wed, 19 Apr 2017 20:32:11 +0000
Subject: [PATCH] [APInt] Use SignExtend64 instead of reinventing it. NFC

llvm-svn: 300747
---
 llvm/include/llvm/ADT/APInt.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
index b508c77..cdcb178 100644
--- a/llvm/include/llvm/ADT/APInt.h
+++ b/llvm/include/llvm/ADT/APInt.h
@@ -1433,8 +1433,7 @@ public:
   /// int64_t. Otherwise an assertion will result.
   int64_t getSExtValue() const {
     if (isSingleWord())
-      return int64_t(VAL << (APINT_BITS_PER_WORD - BitWidth)) >>
-             (APINT_BITS_PER_WORD - BitWidth);
+      return SignExtend64(VAL, BitWidth);
     assert(getMinSignedBits() <= 64 && "Too many bits for int64_t");
     return int64_t(pVal[0]);
   }
-- 
2.7.4