[llvm] r209183 - LTO: Add a testcase for linking modules with incompatible Debug Info

[Adrian Prantl]

Author: adrian
Date: Mon May 19 18:41:25 2014
New Revision: 209183

URL: http://llvm.org/viewvc/llvm-project?rev=209183&view=rev
Log:
LTO: Add a testcase for linking modules with incompatible Debug Info
Versions.
rdar://problem/16926122

Added:
    llvm/trunk/test/Linker/debug-info-version-a.ll
    llvm/trunk/test/Linker/debug-info-version-b.ll

Added: llvm/trunk/test/Linker/debug-info-version-a.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Linker/debug-info-version-a.ll?rev=209183&view=auto
==============================================================================
--- llvm/trunk/test/Linker/debug-info-version-a.ll (added)
+++ llvm/trunk/test/Linker/debug-info-version-a.ll Mon May 19 18:41:25 2014
@@ -0,0 +1,16 @@
+; RUN: llvm-link %s %p/debug-info-version-b.ll -S -o - | FileCheck %s
+
+; Test linking of incompatible debug info versions. The debug info
+; from the other file should be dropped.
+
+; CHECK-NOT: metadata !{metadata !"b.c", metadata !""}
+; CHECK: metadata !{metadata !"a.c", metadata !""}
+; CHECK-NOT: metadata !{metadata !"b.c", metadata !""}
+
+!llvm.module.flags = !{ !0 }
+!llvm.dbg.cu = !{!1}
+
+!0 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
+!1 = metadata !{i32 589841, metadata !2, i32 12, metadata !"clang", i1 true, metadata !"", i32 0, metadata !3, metadata !3, metadata !3, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{metadata !"a.c", metadata !""}
+!3 = metadata !{}

Added: llvm/trunk/test/Linker/debug-info-version-b.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Linker/debug-info-version-b.ll?rev=209183&view=auto
==============================================================================
--- llvm/trunk/test/Linker/debug-info-version-b.ll (added)
+++ llvm/trunk/test/Linker/debug-info-version-b.ll Mon May 19 18:41:25 2014
@@ -0,0 +1,10 @@
+; RUN: true
+; Companion for debug-info-version-a.ll.
+
+!llvm.module.flags = !{ !0 }
+!llvm.dbg.cu = !{!1}
+
+!0 = metadata !{i32 2, metadata !"Debug Info Version", i32 42}
+!1 = metadata !{i32 589841, metadata !2, i32 12, metadata !"clang", metadata !"I AM UNEXPECTED!"} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{metadata !"b.c", metadata !""}
+!3 = metadata !{}