New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3218 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/2002-08-02-CastTest.ll b/test/Transforms/InstCombine/2002-08-02-CastTest.ll
new file mode 100644 (file)
index 0000000..7599d76
--- /dev/null
+++ b/test/Transforms/InstCombine/2002-08-02-CastTest.ll
@@ -0,0 +1,10 @@
+; This testcase is incorrectly getting completely eliminated.  There should be
+; SOME instruction named %c here, even if it's a bitwise and.
+;
+; RUN: as < %s | opt -instcombine -dce | grep '%c'
+ulong %test3(ulong %A) {
+        %c1 = cast ulong %A to ubyte            ; <ubyte> [#uses=0]
+        %c2 = cast ulong %A to ulong            ; <ulong> [#uses=0]
+        ret ulong %A
+}
+