1 ; REQUIRES: object-emission
2 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj < %s | llvm-dwarfdump -v - \
3 ; RUN: | FileCheck --check-prefix=MONOLITHIC %s
4 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -split-dwarf-file=foo.dwo -filetype=obj < %s \
5 ; RUN: | llvm-dwarfdump -v - | FileCheck --check-prefix=SPLIT %s
7 ; This basic test checks the emission of a DWARF v5 string offsets table in
8 ; the split and non-split (monolithic) scenario.
10 ; Constructed from the following source with
11 ; clang -S -emit-llvm -gdwarf-5
16 ; In the non-split scenario, check the DW_AT_str_offsets_base attribute
18 ; MONOLITHIC: .debug_abbrev contents:
19 ; MONOLITHIC-NOT: contents:
20 ; MONOLITHIC: DW_TAG_compile_unit
21 ; MONOLITHIC-NOT: DW_TAG
22 ; MONOLITHIC: DW_AT_str_offsets_base DW_FORM_sec_offset
24 ; Check that indexed strings come out correctly and that the DW_str_offsets_base attribute
25 ; is there and has the right value.
26 ; MONOLITHIC: .debug_info contents:
27 ; MONOLITHIC-NOT: contents:
28 ; MONOLITHIC: DW_TAG_compile_unit
29 ; MONOLITHIC-NOT: {{DW_TAG|NULL}}
30 ; MONOLITHIC: DW_AT_producer [DW_FORM_strx1] (indexed (00000000) string = "clang{{.*}}")
31 ; MONOLITHIC-NOT: {{DW_TAG|NULL}}
32 ; MONOLITHIC: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
33 ; MONOLITHIC-NOT: {{DW_TAG|NULL}}
34 ; MONOLITHIC: DW_AT_comp_dir [DW_FORM_strx1] (indexed (00000002) string = "/home/{{.*}}")
36 ; Extract the string offsets from the .debug_str section so we can check that
37 ; they are referenced correctly in the .debug_str_offsets section.
38 ; MONOLITHIC: .debug_str contents:
39 ; MONOLITHIC-NEXT: 0x00000000:
40 ; MONOLITHIC-NEXT: 0x[[STRING2:[0-9a-f]]]
41 ; MONOLITHIC-NEXT: 0x[[STRING3:[0-9a-f]]]
42 ; MONOLITHIC-NEXT: 0x[[STRING4:[0-9a-f]]]
44 ; Verify that the .debug_str_offsets section is there and that it starts
45 ; with an 8-byte header, followed by offsets into the .debug_str section.
46 ; MONOLITHIC: .debug_str_offsets contents:
47 ; MONOLITHIC-NEXT: Contribution size = 36, Format = DWARF32, Version = 5
48 ; MONOLITHIC-NEXT: 0x00000008: 00000000
49 ; MONOLITHIC-NEXT: 0x0000000c: [[STRING2]]
50 ; MONOLITHIC-NEXT: 0x00000010: [[STRING3]]
51 ; MONOLITHIC-NEXT: 0x00000014: [[STRING4]]
53 ; For split dwarf, verify that the skeleton unit has the DW_AT_str_offsets_base
54 ; attribute and that it has the right value.
56 ; SPLIT: .debug_info contents:
57 ; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_skeleton
58 ; SPLIT-NOT: contents:
59 ; SPLIT: DW_TAG_compile_unit
60 ; SPLIT-NOT: {{DW_TAG|contents:}}
61 ; SPLIT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)
62 ; SPLIT: DW_AT_comp_dir [DW_FORM_strx1] (indexed (00000000) string = "/home/test")
63 ; SPLIT: DW_AT_GNU_dwo_name [DW_FORM_strx1] (indexed (00000001) string = "foo.dwo")
65 ; Check for the split CU in .debug_info.dwo.
66 ; SPLIT: .debug_info.dwo contents:
67 ; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_split_compile
68 ; SPLIT-NOT: contents:
69 ; SPLIT: DW_TAG_compile_unit
71 ; Check that a couple of indexed strings are displayed correctly and that
72 ; they have the right format (DW_FORM_strx1).
73 ; SPLIT-NOT: contents:
74 ; SPLIT: DW_TAG_enumerator
75 ; SPLIT-NOT: {{DW_TAG|NULL}}
76 ; SPLIT: DW_AT_name [DW_FORM_strx1] (indexed (00000001) string = "a")
77 ; SPLIT-NOT: contents:
78 ; SPLIT: DW_TAG_enumerator
79 ; SPLIT-NOT: {{DW_TAG|NULL}}
80 ; SPLIT: DW_AT_name [DW_FORM_strx1] (indexed (00000002) string = "b")
82 ; Extract the string offsets referenced in the main file by the skeleton unit.
83 ; SPLIT: .debug_str contents:
84 ; SPLIT-NEXT: 0x[[STRHOMETESTSPLIT:[0-9a-f]*]]: "/home/test"
85 ; SPLIT-NEXT: 0x[[STRESPLIT:[0-9a-f]*]]: "E"
86 ; SPLIT-NEXT: 0x[[STRGLOBSPLIT:[0-9a-f]*]]: "glob"
87 ; SPLIT-NEXT: 0x[[STRFOODWOSPLIT:[0-9a-f]*]]: "foo.dwo"
89 ; Extract the string offsets referenced in the .dwo file by the split unit.
90 ; SPLIT: .debug_str.dwo contents:
91 ; SPLIT-NEXT: 0x00000000:{{.*}}
92 ; SPLIT-NEXT: 0x[[STRING2DWO:[0-9a-f]*]]{{.*}}
93 ; SPLIT-NEXT: 0x[[STRING3DWO:[0-9a-f]*]]{{.*}}
95 ; Check the string offsets sections in both the main and the .dwo files and
96 ; verify that the extracted string offsets are referenced correctly. The
97 ; sections should contain only the offsets of strings that are actually
98 ; referenced by the debug info.
99 ; SPLIT: .debug_str_offsets contents:
100 ; SPLIT-NEXT: 0x00000000: Contribution size = 12, Format = DWARF32, Version = 5
101 ; SPLIT-NEXT: 0x00000008: [[STRHOMETESTSPLIT]] "/home/test"
102 ; SPLIT-NEXT: 0x0000000c: [[STRFOODWOSPLIT]] "foo.dwo"
105 ; SPLIT: .debug_str_offsets.dwo contents:
106 ; SPLIT-NEXT: 0x00000000: Contribution size = 36, Format = DWARF32, Version = 5
107 ; SPLIT-NEXT: 0x00000008: 00000000{{.*}}
108 ; SPLIT-NEXT: 0x0000000c: [[STRING2DWO]]{{.*}}
109 ; SPLIT-NEXT: 0x00000010: [[STRING3DWO]]
111 @glob = global i32 0, align 4, !dbg !0
114 !llvm.module.flags = !{!11, !12, !13}
117 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
118 !1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 3, type: !5, isLocal: false, isDefinition: true)
119 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk 322415)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10)
120 !3 = !DIFile(filename: "en.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "d96b2e2d618e550f0ddd0b6a49c98b02")
122 !5 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !3, line: 1, size: 32, elements: !6, identifier: "_ZTS1E")
124 !7 = !DIEnumerator(name: "a", value: 0)
125 !8 = !DIEnumerator(name: "b", value: 1)
126 !9 = !DIEnumerator(name: "c", value: 2)
128 !11 = !{i32 2, !"Dwarf Version", i32 5}
129 !12 = !{i32 2, !"Debug Info Version", i32 3}
130 !13 = !{i32 1, !"wchar_size", i32 4}
131 !14 = !{!"clang version 7.0.0 (trunk 322415)"}