1 files changed, 73 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/Generic/two-cus-from-same-file.ll b/llvm/test/DebugInfo/Generic/two-cus-from-same-file.ll
new file mode 100644
index 00000000000..4aeaaac22d2
--- /dev/null
+++ b/llvm/test/DebugInfo/Generic/two-cus-from-same-file.ll
@@ -0,0 +1,73 @@
+; For http://llvm.org/bugs/show_bug.cgi?id=12942
+;   There are two CUs coming from /tmp/foo.c in this module. Make sure it doesn't
+;   blow llc up and produces something reasonable.
+;
+
+; REQUIRES: object-emission
+
+; RUN: %llc_dwarf %s -o %t -filetype=obj -O0
+; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
+
+; ModuleID = 'test.bc'
+
+@str = private unnamed_addr constant [4 x i8] c"FOO\00"
+@str1 = private unnamed_addr constant [6 x i8] c"Main!\00"
+
+define void @foo() nounwind {
+entry:
+  %puts = tail call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str, i32 0, i32 0)), !dbg !23
+  ret void, !dbg !25
+}
+
+declare i32 @puts(i8* nocapture) nounwind
+
+define i32 @main(i32 %argc, i8** nocapture %argv) nounwind {
+entry:
+  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !21, metadata !DIExpression()), !dbg !26
+  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !22, metadata !DIExpression()), !dbg !27
+  %puts = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @str1, i32 0, i32 0)), !dbg !28
+  tail call void @foo() nounwind, !dbg !30
+  ret i32 0, !dbg !31
+}
+
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
+
+!llvm.dbg.cu = !{!0, !9}
+!llvm.module.flags = !{!33}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156513)", isOptimized: true, emissionKind: 1, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports: !1)
+!1 = !{}
+!3 = !{!5}
+!5 = distinct !DISubprogram(name: "foo", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !32, scope: !6, type: !7, function: void ()* @foo, variables: !1)
+!6 = !DIFile(filename: "foo.c", directory: "/tmp")
+!7 = !DISubroutineType(types: !8)
+!8 = !{null}
+!9 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156513)", isOptimized: true, emissionKind: 1, file: !32, enums: !1, retainedTypes: !1, subprograms: !10, globals: !1, imports: !1)
+!10 = !{!12}
+!12 = distinct !DISubprogram(name: "main", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !32, scope: !6, type: !13, function: i32 (i32, i8**)* @main, variables: !19)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!15, !15, !16}
+!15 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !17)
+!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !18)
+!18 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!19 = !{!21, !22}
+!21 = !DILocalVariable(name: "argc", line: 11, arg: 1, scope: !12, file: !6, type: !15)
+!22 = !DILocalVariable(name: "argv", line: 11, arg: 2, scope: !12, file: !6, type: !16)
+!23 = !DILocation(line: 6, column: 3, scope: !24)
+!24 = distinct !DILexicalBlock(line: 5, column: 16, file: !32, scope: !5)
+!25 = !DILocation(line: 7, column: 1, scope: !24)
+!26 = !DILocation(line: 11, column: 14, scope: !12)
+!27 = !DILocation(line: 11, column: 26, scope: !12)
+!28 = !DILocation(line: 12, column: 3, scope: !29)
+!29 = distinct !DILexicalBlock(line: 11, column: 34, file: !32, scope: !12)
+!30 = !DILocation(line: 13, column: 3, scope: !29)
+!31 = !DILocation(line: 14, column: 3, scope: !29)
+!32 = !DIFile(filename: "foo.c", directory: "/tmp")
+
+; This test is simple to be cross platform (many targets don't yet have
+; sufficiently good DWARF emission and/or dumping)
+; CHECK: {{DW_TAG_compile_unit}}
+; CHECK: {{foo\.c}}
+
+!33 = !{i32 1, !"Debug Info Version", i32 3}