De-constify Types in FunctionType::get().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134888 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
index 6247b03..66c3028 100644
--- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
@@ -992,7 +992,7 @@
     }
 
     // ffs(x) -> x != 0 ? (i32)llvm.cttz(x)+1 : 0
-    const Type *ArgType = Op->getType();
+    Type *ArgType = Op->getType();
     Value *F = Intrinsic::getDeclaration(Callee->getParent(),
                                          Intrinsic::cttz, &ArgType, 1);
     Value *V = B.CreateCall(F, Op, "cttz");