[llvm] r316258 - [SelectionDAG] Use dyn_cast without cast.

[Florian Hahn via llvm-commits]

Author: fhahn
Date: Fri Oct 20 22:37:10 2017
New Revision: 316258

URL: http://llvm.org/viewvc/llvm-project?rev=316258&view=rev
Log:
[SelectionDAG] Use dyn_cast without cast.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=316258&r1=316257&r2=316258&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Fri Oct 20 22:37:10 2017
@@ -2966,8 +2966,8 @@ unsigned SelectionDAG::ComputeNumSignBit
   unsigned Tmp, Tmp2;
   unsigned FirstAnswer = 1;
 
-  if (isa<ConstantSDNode>(Op)) {
-    const APInt &Val = cast<ConstantSDNode>(Op)->getAPIntValue();
+  if (auto *C = dyn_cast<ConstantSDNode>(Op)) {
+    const APInt &Val = C->getAPIntValue();
     return Val.getNumSignBits();
   }