New testcase for a bug in instcombine

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9680 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/InstCombine/2003-11-03-VarargsCallBug.ll

@@ -0,0 +1,13 @@
+; The cast in this testcase is not eliminatable on a 32-bit target!
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep cast
+
+target endian = little
+target pointersize = 32
+
+declare void %foo(...)
+
+void %test(long %X) {
+	%Y = cast long %X to int*
+	call void (...)* %foo(int* %Y)
+	ret void
+}