land David Blaikie's patch to de-constify Type, with a few tweaks.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index 630a6fe..53341cc 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -421,7 +421,7 @@
 
 /// dyn_castZExtVal - Checks if V is a zext or constant that can
 /// be truncated to Ty without losing bits.
-static Value *dyn_castZExtVal(Value *V, const Type *Ty) {
+static Value *dyn_castZExtVal(Value *V, Type *Ty) {
   if (ZExtInst *Z = dyn_cast<ZExtInst>(V)) {
     if (Z->getSrcTy() == Ty)
       return Z->getOperand(0);