[llvm] r325003 - [InstCombine] Simplify getLogBase2 case for scalar/splats. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Tue Feb 13 05:16:26 2018
New Revision: 325003

URL: http://llvm.org/viewvc/llvm-project?rev=325003&view=rev
Log:
[InstCombine] Simplify getLogBase2 case for scalar/splats. NFCI.

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

Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp?rev=325003&r1=325002&r2=325003&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp Tue Feb 13 05:16:26 2018
@@ -102,9 +102,8 @@ static Value *simplifyValueKnownNonZero(
 /// Return a null pointer otherwise.
 static Constant *getLogBase2(Type *Ty, Constant *C) {
   const APInt *IVal;
-  if (const auto *CI = dyn_cast<ConstantInt>(C))
-    if (match(CI, m_APInt(IVal)) && IVal->isPowerOf2())
-      return ConstantInt::get(Ty, IVal->logBase2());
+  if (match(C, m_APInt(IVal)) && IVal->isPowerOf2())
+    return ConstantInt::get(Ty, IVal->logBase2());
 
   if (!Ty->isVectorTy())
     return nullptr;