Adjust to new itf


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12534 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp
index 0067e21..d07e4af 100644
--- a/lib/Support/ConstantRange.cpp
+++ b/lib/Support/ConstantRange.cpp
@@ -62,8 +62,8 @@
 /// Lower==Upper and Lower != Min or Max for its type (or if the two constants
 /// have different types)
 ///
-ConstantRange::ConstantRange(ConstantIntegral *L,
-                             ConstantIntegral *U) : Lower(L), Upper(U) {
+ConstantRange::ConstantRange(Constant *L, Constant *U)
+  : Lower(cast<ConstantIntegral>(L)), Upper(cast<ConstantIntegral>(U)) {
   assert(Lower->getType() == Upper->getType() &&
          "Incompatible types for ConstantRange!");