Reduced testcase for PR 110

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9917 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/2003-11-12-CastSubBug.ll b/test/Transforms/InstCombine/2003-11-12-CastSubBug.ll
new file mode 100644 (file)
index 0000000..cd5f233
--- /dev/null
+++ b/test/Transforms/InstCombine/2003-11-12-CastSubBug.ll
@@ -0,0 +1,9 @@
+; llvm-as < %s | opt -instcombine | llvm-dis | grep 'to sbyte'
+
+%.Base64_1 = external constant [4 x sbyte] 
+
+ubyte %test(sbyte %X) {
+       %tmp.12 = sub sbyte %X, cast ([4 x sbyte]* %.Base64_1 to sbyte)         ; <sbyte> [#uses=1]
+       %tmp.13 = cast sbyte %tmp.12 to ubyte           ; <ubyte> [#uses=1]
+       ret ubyte %tmp.13
+}