[llvm] r294198 - [InstCombine] simplify dyn_cast + isa; NFCI

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Mon Feb  6 11:16:16 2017
New Revision: 294198

URL: http://llvm.org/viewvc/llvm-project?rev=294198&view=rev
Log:
[InstCombine] simplify dyn_cast + isa; NFCI

Modified:
    llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp

Modified: llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp?rev=294198&r1=294197&r2=294198&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp Mon Feb  6 11:16:16 2017
@@ -568,13 +568,11 @@ static Value *tryFactorization(InstCombi
         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