New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17729 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/IPConstantProp/return-constant.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -ipconstprop -instcombine | llvm-dis 
+implementation
+
+internal int %foo(bool %C) {
+	br bool %C, label %T, label %F
+T:
+	ret int 52
+F:
+	ret int 52
+}
+
+bool %caller(bool %C) {
+	%X = call int %foo(bool %C)
+	%Y = cast int %X to bool
+	ret bool %Y
+}