[llvm] r325950 - Fixed unused variable warning. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Fri Feb 23 12:16:18 2018
New Revision: 325950

URL: http://llvm.org/viewvc/llvm-project?rev=325950&view=rev
Log:
Fixed unused variable warning. NFCI.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=325950&r1=325949&r2=325950&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Feb 23 12:16:18 2018
@@ -31887,7 +31887,7 @@ static SDValue combineSelect(SDNode *N,
                                       SUBUSBuilder);
 
       if (auto *OpRHSBV = dyn_cast<BuildVectorSDNode>(OpRHS))
-        if (auto *CondRHSBV = dyn_cast<BuildVectorSDNode>(CondRHS)) {
+        if (isa<BuildVectorSDNode>(CondRHS)) {
           // If the RHS is a constant we have to reverse the const
           // canonicalization.
           // x > C-1 ? x+-C : 0 --> subus x, C