From 8656d567d9426f6ae62b3f4412c92f3bce1e9f13 Mon Sep 17 00:00:00 2001
From: Keno Fischer <kfischer@college.harvard.edu>
Date: Sat, 5 Dec 2015 01:02:53 +0000
Subject: [PATCH] [MC] Add a test for state reset in MCMachOStreamer

This was fixed in r254751, but untestable until r254774, which
added the necessary command line flag to llc. Add a test now
to make sure this doesn't regress again.

llvm-svn: 254814
---
 llvm/test/MC/MachO/empty-twice.ll | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 llvm/test/MC/MachO/empty-twice.ll

diff --git a/llvm/test/MC/MachO/empty-twice.ll b/llvm/test/MC/MachO/empty-twice.ll
new file mode 100644
index 000000000000..6914c73a58d1
--- /dev/null
+++ b/llvm/test/MC/MachO/empty-twice.ll
@@ -0,0 +1,12 @@
+; Check that there is no persistent state in the MachO emitter that crashes
+; us when reusing the pass manager.
+; RUN: llc -mtriple=x86_64-apple-darwin -compile-twice -filetype=obj %s -o -
+
+; Force the creation of a DWARF section
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "LLVM", isOptimized: true)
+!1 = !DIFile(filename: "<stdin>", directory: "/")
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}