From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 30 Mar 2017 22:21:16 +0000 (+0000)
Subject: [InstSimplify] Use m_SignBit instead of calling getSignBit and using m_Specific.... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=83c5596f48ceef40c53b2ce0ff5ac5ddf6980cfa;p=llvm

[InstSimplify] Use m_SignBit instead of calling getSignBit and using m_Specific. NFCI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299121 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp
index dace55a1c09..29c0d0afe31 100644
--- a/lib/Analysis/InstructionSimplify.cpp
+++ b/lib/Analysis/InstructionSimplify.cpp
@@ -565,10 +565,8 @@ static Value *SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
   // add nsw/nuw (xor Y, signbit), signbit --> Y
   // The no-wrapping add guarantees that the top bit will be set by the add.
   // Therefore, the xor must be clearing the already set sign bit of Y.
-  Constant *SignBit =
-      ConstantInt::get(Ty, APInt::getSignBit(Ty->getScalarSizeInBits()));
-  if ((isNSW || isNUW) && match(Op1, m_Specific(SignBit)) &&
-      match(Op0, m_Xor(m_Value(Y), m_Specific(SignBit))))
+  if ((isNSW || isNUW) && match(Op1, m_SignBit()) &&
+      match(Op0, m_Xor(m_Value(Y), m_SignBit())))
     return Y;
 
   /// i1 add -> xor.