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3363ed7b0a
[this re-applies c0176916a4824812d25a5a22c4ff7c95857b0cd6 with the correct commit message and phabricator link] This addresses point 1 of PR44213. https://bugs.llvm.org/show_bug.cgi?id=44213 The DW_AT_LLVM_sysroot attribute is used for Clang module debug info, to allow LLDB to import a Clang module from source. Currently it is part of each DW_TAG_module, however, it is the same for all modules in a compile unit. It is more efficient and less ambiguous to store it once in the DW_TAG_compile_unit. This should have no effect on DWARF consumers other than LLDB. Differential Revision: https://reviews.llvm.org/D71732
29 lines
1.4 KiB
LLVM
29 lines
1.4 KiB
LLVM
; ModuleID = '/Volumes/Data/apple-internal/llvm/tools/clang/test/Modules/debug-info-moduleimport.m'
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; RUN: llc %s -accel-tables=Dwarf -o %t -filetype=obj
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; RUN: llvm-dwarfdump -debug-info %t | FileCheck %s
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; RUN: llvm-dwarfdump -verify %t
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_LLVM_sysroot {{.*}}"/"
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; CHECK: DW_TAG_module
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; CHECK-NEXT: DW_AT_name {{.*}}"DebugModule"
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; CHECK-NEXT: DW_AT_LLVM_config_macros {{.*}}"-DMODULES=0"
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; CHECK-NEXT: DW_AT_LLVM_include_path {{.*}}"/llvm/tools/clang/test/Modules/Inputs"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx"
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7}
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!llvm.ident = !{!8}
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!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, file: !1, producer: "LLVM version 3.7.0", isOptimized: false, runtimeVersion: 2, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !3, sysroot: "/")
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!1 = !DIFile(filename: "/llvm/tools/clang/test/Modules/<stdin>", directory: "/")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !5, file: !1, line: 5)
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!5 = !DIModule(scope: null, name: "DebugModule", configMacros: "-DMODULES=0", includePath: "/llvm/tools/clang/test/Modules/Inputs")
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!6 = !{i32 2, !"Dwarf Version", i32 4}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !{!"LLVM version 3.7.0"}
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