new testcase that crashes opt

llvm-svn: 8536
diff --git a/llvm/test/Regression/Transforms/ADCE/2003-09-15-InfLoopCrash.ll b/llvm/test/Regression/Transforms/ADCE/2003-09-15-InfLoopCrash.ll
new file mode 100644
index 0000000..13b4f91
--- /dev/null
+++ b/llvm/test/Regression/Transforms/ADCE/2003-09-15-InfLoopCrash.ll
@@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | opt -adce -disable-output
+
+int %main() {
+	br label %loop
+
+loop:
+	br label %loop
+}