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| -rw-r--r-- | llvm/test/DebugInfo/X86/string-offsets-table.ll | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/X86/string-offsets-table.ll b/llvm/test/DebugInfo/X86/string-offsets-table.ll new file mode 100644 index 00000000000..e2b856f3baf --- /dev/null +++ b/llvm/test/DebugInfo/X86/string-offsets-table.ll @@ -0,0 +1,123 @@ +; REQUIRES: object-emission +; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj < %s | llvm-dwarfdump -v - \ +; RUN: | FileCheck --check-prefix=MONOLITHIC %s +; RUN: llc -mtriple=x86_64-unknown-linux-gnu -split-dwarf-file=%t.dwo -filetype=obj < %s \ +; RUN: | llvm-dwarfdump -v - | FileCheck --check-prefix=SPLIT %s + +; This basic test checks the emission of a DWARF v5 string offsets table in +; the split and non-split (monolithic) scenario. +; +; Constructed from the following source with +; clang -S -emit-llvm -gdwarf-5 +; +; enum E {a, b, c}; +; E glob; +; +; In the non-split scenario, check the DW_AT_str_offsets_base attribute +; in .debug_abbrev. +; MONOLITHIC: .debug_abbrev contents: +; MONOLITHIC-NOT: contents: +; MONOLITHIC: DW_TAG_compile_unit +; MONOLITHIC-NOT: DW_TAG +; MONOLITHIC: DW_AT_str_offsets_base DW_FORM_sec_offset + +; Check that indexed strings come out correctly and that the DW_str_offsets_base attribute +; is there and has the right value. +; MONOLITHIC: .debug_info contents: +; MONOLITHIC-NOT: contents: +; MONOLITHIC: DW_TAG_compile_unit +; MONOLITHIC-NOT: {{DW_TAG|NULL}} +; MONOLITHIC: DW_AT_producer [DW_FORM_strx1] ( indexed (00000000) string = "clang{{.*}}") +; MONOLITHIC-NOT: {{DW_TAG|NULL}} +; MONOLITHIC: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008) +; MONOLITHIC-NOT: {{DW_TAG|NULL}} +; MONOLITHIC: DW_AT_comp_dir [DW_FORM_strx1] ( indexed (00000002) string = "/home/{{.*}}") + +; Extract the string offsets from the .debug_str section so we can check that +; they are referenced correctly in the .debug_str_offsets section. +; MONOLITHIC: .debug_str contents: +; MONOLITHIC-NEXT: 0x00000000: +; MONOLITHIC-NEXT: 0x[[STRING2:[0-9a-f]]] +; MONOLITHIC-NEXT: 0x[[STRING3:[0-9a-f]]] +; MONOLITHIC-NEXT: 0x[[STRING4:[0-9a-f]]] + +; Verify that the .debug_str_offsets section is there and that it starts +; with an 8-byte header, followed by offsets into the .debug_str section. +; MONOLITHIC: .debug_str_offsets contents: +; MONOLITHIC-NEXT: Contribution size = 32, Format = DWARF32, Version = 5 +; MONOLITHIC-NEXT: 0x00000008: 00000000 +; MONOLITHIC-NEXT: 0x0000000c: [[STRING2]] +; MONOLITHIC-NEXT: 0x00000010: [[STRING3]] +; MONOLITHIC-NEXT: 0x00000014: [[STRING4]] + +; For split dwarf, verify that the skeleton unit has the DW_AT_str_offsets_base +; attribute and that it has the right value. +; +; SPLIT: .debug_info contents: +; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_skeleton +; SPLIT-NOT: contents: +; SPLIT: DW_TAG_compile_unit +; SPLIT-NOT: {{DW_TAG|contents:}} +; SPLIT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008) + +; Check for the split CU in .debug_info.dwo. +; SPLIT: .debug_info.dwo contents: +; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_split_compile +; SPLIT-NOT: contents: +; SPLIT: DW_TAG_compile_unit +; +; Check that a couple of indexed strings are displayed correctly and that +; they have the right format (DW_FORM_strx1). +; SPLIT-NOT: contents: +; SPLIT: DW_TAG_enumerator +; SPLIT-NOT: {{DW_TAG|NULL}} +; SPLIT: DW_AT_name [DW_FORM_strx1] ( indexed (00000004) string = "a") +; SPLIT-NOT: contents: +; SPLIT: DW_TAG_enumerator +; SPLIT-NOT: {{DW_TAG|NULL}} +; SPLIT: DW_AT_name [DW_FORM_strx1] ( indexed (00000005) string = "b") +; +; Extract the string offsets referenced in the main file by the skeleton unit. +; SPLIT: .debug_str contents: +; SPLIT-NEXT: 0x00000000:{{.*}} +; SPLIT-NEXT: 0x[[STRING2SPLIT:[0-9a-f]*]]{{.*}} +; +; Extract the string offsets referenced in the .dwo file by the split unit. +; SPLIT: .debug_str.dwo contents: +; SPLIT-NEXT: 0x00000000:{{.*}} +; SPLIT-NEXT: 0x[[STRING2DWO:[0-9a-f]*]]{{.*}} +; SPLIT-NEXT: 0x[[STRING3DWO:[0-9a-f]*]]{{.*}} +; +; Check the string offsets sections in both the main and the .dwo files and +; verify that the extracted string offsets are referenced correctly. +; SPLIT: .debug_str_offsets contents: +; SPLIT-NEXT: 0x00000000: Contribution size = 8, Format = DWARF32, Version = 5 +; SPLIT-NEXT: 0x00000008: 00000000{{.*}} +; SPLIT-NEXT: 0x0000000c: [[STRING2SPLIT]] +; SPLIT: .debug_str_offsets.dwo contents: +; SPLIT-NEXT: 0x00000000: Contribution size = 32, Format = DWARF32, Version = 5 +; SPLIT-NEXT: 0x00000008: 00000000{{.*}} +; SPLIT-NEXT: 0x0000000c: [[STRING2DWO]]{{.*}} +; SPLIT-NEXT: 0x00000010: [[STRING3DWO]] + +@glob = global i32 0, align 4, !dbg !0 + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!11, !12, !13} +!llvm.ident = !{!14} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 3, type: !5, isLocal: false, isDefinition: true) +!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) +!3 = !DIFile(filename: "en.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "d96b2e2d618e550f0ddd0b6a49c98b02") +!4 = !{!5} +!5 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !3, line: 1, size: 32, elements: !6, identifier: "_ZTS1E") +!6 = !{!7, !8, !9} +!7 = !DIEnumerator(name: "a", value: 0) +!8 = !DIEnumerator(name: "b", value: 1) +!9 = !DIEnumerator(name: "c", value: 2) +!10 = !{!0} +!11 = !{i32 2, !"Dwarf Version", i32 5} +!12 = !{i32 2, !"Debug Info Version", i32 3} +!13 = !{i32 1, !"wchar_size", i32 4} +!14 = !{!"clang version 7.0.0 (trunk 322415)"} |
