From: Fangrui Song <maskray@google.com>
Date: Thu, 12 Jul 2018 22:56:23 +0000 (+0000)
Subject: [InstCombine] Simplify isKnownNegation
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=07757b9f4ce5b9729af6d920a6794f40112f8807;p=llvm

[InstCombine] Simplify isKnownNegation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336957 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 88ed6562c38..42bf427276f 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -4524,11 +4524,8 @@ bool llvm::isKnownNegation(const Value *X, const Value *Y) {
 
   // X = sub (A, B), Y = sub (B, A)
   Value *A, *B;
-  if (match(X, m_Sub(m_Value(A), m_Value(B))) &&
-      match(Y, m_Sub(m_Specific(B), m_Specific(A))))
-    return true;
-
-  return false;
+  return match(X, m_Sub(m_Value(A), m_Value(B))) &&
+         match(Y, m_Sub(m_Specific(B), m_Specific(A)));
 }
 
 static SelectPatternResult matchSelectPattern(CmpInst::Predicate Pred,