Debug Info: update testing cases to specify the debug info version number.

We are going to drop debug info without a version number or with a different
version number, to make sure we don't crash when we see bitcode files with
different debug info metadata format.

llvm-svn: 195504
diff --git a/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll b/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
index ce156fe..bdd0e04 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
@@ -86,6 +86,7 @@
 declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!24}
 
 !0 = metadata !{i32 786478, metadata !23, metadata !1, metadata !"f", metadata !"f", metadata !"", i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @f, null, null, metadata !22, i32 4} ; [ DW_TAG_subprogram ] [line 4] [def] [f]
 !1 = metadata !{i32 786473, metadata !23} ; [ DW_TAG_file_type ]
@@ -108,3 +109,4 @@
 !21 = metadata !{metadata !0}
 !22 = metadata !{metadata !5}
 !23 = metadata !{metadata !"simple.c", metadata !"/home/rengol01/temp/tests/dwarf/relocation"}
+!24 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}