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The patch also adds a method to choose an appropriate DWARF form to represent section offsets according to the version and the format of producing debug info. Differential Revision: https://reviews.llvm.org/D87014
64 lines
3.0 KiB
LLVM
64 lines
3.0 KiB
LLVM
; This checks that .debug_info can be generated in the DWARF64 format.
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; RUN: llc -mtriple=x86_64 -dwarf-version=3 -dwarf64 -filetype=obj %s -o %t3
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; RUN: llvm-dwarfdump -debug-abbrev -debug-info -v %t3 | \
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; RUN: FileCheck %s --check-prefixes=CHECK,DWARFv3
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; RUN: llc -mtriple=x86_64 -dwarf-version=4 -dwarf64 -filetype=obj %s -o %t4
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; RUN: llvm-dwarfdump -debug-abbrev -debug-info -v %t4 | \
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; RUN: FileCheck %s --check-prefixes=CHECK,DWARFv4
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; CHECK: .debug_abbrev contents:
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; CHECK: [1] DW_TAG_compile_unit DW_CHILDREN_yes
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; CHECK-NEXT: DW_AT_producer DW_FORM_strp
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; CHECK-NEXT: DW_AT_language DW_FORM_data2
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; CHECK-NEXT: DW_AT_name DW_FORM_strp
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; DWARFv3-NEXT: DW_AT_stmt_list DW_FORM_data8
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; DWARFv4-NEXT: DW_AT_stmt_list DW_FORM_sec_offset
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; CHECK-NEXT: DW_AT_comp_dir DW_FORM_strp
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; CHECK: [2] DW_TAG_variable DW_CHILDREN_no
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; CHECK-NEXT: DW_AT_name DW_FORM_strp
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; CHECK-NEXT: DW_AT_type DW_FORM_ref4
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; CHECK: [3] DW_TAG_base_type DW_CHILDREN_no
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; CHECK-NEXT: DW_AT_name DW_FORM_strp
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; CHECK: .debug_info contents:
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; CHECK: Compile Unit: length = 0x{{([[:xdigit:]]{16})}}, format = DWARF64,
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; CHECK: DW_TAG_compile_unit [1] *
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; CHECK-NEXT: DW_AT_producer [DW_FORM_strp] ( .debug_str[0x{{([[:xdigit:]]{16})}}] = "clang version 12.0.0")
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; CHECK-NEXT: DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{([[:xdigit:]]{16})}}] = "foo.c")
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; DWARFv3-NEXT: DW_AT_stmt_list [DW_FORM_data8] (0x0000000000000000)
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; DWARFv4-NEXT: DW_AT_stmt_list [DW_FORM_sec_offset] (0x0000000000000000)
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; CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x{{([[:xdigit:]]{16})}}] = "/tmp")
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; CHECK: DW_TAG_variable [2]
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{([[:xdigit:]]{16})}}] = "foo")
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + {{.+}} => {{.+}} "int")
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; CHECK: DW_TAG_base_type [3]
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{([[:xdigit:]]{16})}}] = "int")
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; IR generated and reduced from:
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; $ cat foo.c
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; int foo;
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; $ clang -g -S -emit-llvm foo.c -o foo.ll
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target triple = "x86_64-unknown-linux-gnu"
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@foo = dso_local global i32 0, align 4, !dbg !0
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "foo", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 12.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
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!3 = !DIFile(filename: "foo.c", directory: "/tmp")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 7, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{!"clang version 12.0.0"}
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