new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31885 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/ConstProp/float-to-ptr-cast.ll

@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | opt -constprop | llvm-dis | grep -F 'ret int* null' | wc -l | grep 2
+int* %test1() {
+  %X = cast float 0.0 to int*
+  ret int* %X
+}
+
+int* %test2() {
+  ret int* cast (float 0.0 to int*)
+}