New testcase that the raiseallocations pass should be able to handle.

llvm-svn: 10304

test/Regression/Transforms/RaiseAllocations/FreeCastConstantExpr.ll

@@ -0,0 +1,10 @@
+; This situation can occur due to the funcresolve pass.
+;
+; RUN: llvm-as < %s | opt -raiseallocs | llvm-dis | not grep call
+
+declare void %free(sbyte*)
+
+void %test(int *%P) {
+  call void(int*)* cast (void(sbyte*)* %free to void(int*)*)(int* %P)
+  ret void
+}