commit cf4c90f3d3861e44175b6e081af8fedfd8217e9a
author Sanjay Patel <spatel@rotateright.com> Mon Feb 06 17:16:16 2017 +0000
committer Sanjay Patel <spatel@rotateright.com> Mon Feb 06 17:16:16 2017 +0000
tree 0a6aef5cb00f86cbaba80c52e7bd2728ab15d89d
parent 82a86cb155d1dff1dea9d6adff946abb93b996dc

[InstCombine] simplify dyn_cast + isa; NFCI

llvm-svn: 294198

llvm/lib/Transforms/InstCombine/InstructionCombining.cpp

diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index b74b3273..ba65ea6 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -568,13 +568,11 @@
         if (isa<OverflowingBinaryOperator>(&I))
           HasNSW = I.hasNoSignedWrap();
 
-        if (BinaryOperator *Op0 = dyn_cast<BinaryOperator>(LHS))
-          if (isa<OverflowingBinaryOperator>(Op0))
-            HasNSW &= Op0->hasNoSignedWrap();
+        if (auto *LOBO = dyn_cast<OverflowingBinaryOperator>(LHS))
+          HasNSW &= LOBO->hasNoSignedWrap();
 
-        if (BinaryOperator *Op1 = dyn_cast<BinaryOperator>(RHS))
-          if (isa<OverflowingBinaryOperator>(Op1))
-            HasNSW &= Op1->hasNoSignedWrap();
+        if (auto *ROBO = dyn_cast<OverflowingBinaryOperator>(RHS))
+          HasNSW &= ROBO->hasNoSignedWrap();
 
         // We can propagate 'nsw' if we know that
         //  %Y = mul nsw i16 %X, C