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94512f24de
Eliminate DITypeIdentifierMap and make DITypeRef a thin wrapper around DIType*. It is no longer legal to refer to a DICompositeType by its 'identifier:', and DIBuilder no longer retains all types with an 'identifier:' automatically. Aside from the bitcode upgrade, this is mainly removing logic to resolve an MDString-based reference to an actualy DIType. The commits leading up to this have made the implicit type map in DICompileUnit's 'retainedTypes:' field superfluous. This does not remove DITypeRef, DIScopeRef, DINodeRef, and DITypeRefArray, or stop using them in DI-related metadata. Although as of this commit they aren't serving a useful purpose, there are patchces under review to reuse them for CodeView support. The tests in LLVM were updated with deref-typerefs.sh, which is attached to the thread "[RFC] Lazy-loading of debug info metadata": http://lists.llvm.org/pipermail/llvm-dev/2016-April/098318.html llvm-svn: 267296
54 lines
2.2 KiB
LLVM
54 lines
2.2 KiB
LLVM
; RUN: llc -mtriple=x86_64-linux -O0 -o - -filetype=obj < %s | llvm-dwarfdump -debug-dump=info -| FileCheck %s
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; RUN: llc -mtriple=x86_64-linux -dwarf-version=2 -O0 -o - -filetype=obj < %s | llvm-dwarfdump -debug-dump=info -| FileCheck -check-prefix=DWARF2 %s
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; Generated from Clang with the following source:
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;
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; struct foo {
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; char c;
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; int i;
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; };
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;
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; foo f;
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; CHECK: DW_AT_name {{.*}} "c"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_data_member_location {{.*}} (0x00)
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; CHECK: DW_AT_name {{.*}} "i"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_data_member_location {{.*}} (0x04)
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; DWARF2: DW_AT_name {{.*}} "c"
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; DWARF2-NOT: DW_TAG
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; DWARF2: DW_AT_data_member_location {{.*}} (<0x02> 23 00 )
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; DWARF2: DW_AT_name {{.*}} "i"
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; DWARF2-NOT: DW_TAG
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; DWARF2: DW_AT_data_member_location {{.*}} (<0x02> 23 04 )
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%struct.foo = type { i8, i32 }
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@f = global %struct.foo zeroinitializer, align 4
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !15}
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!llvm.ident = !{!14}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !10, imports: !2)
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!1 = !DIFile(filename: "data_member_location.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 64, align: 32, file: !1, elements: !5, identifier: "_ZTS3foo")
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!5 = !{!6, !8}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "c", line: 2, size: 8, align: 8, file: !1, scope: !4, baseType: !7)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "i", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !4, baseType: !9)
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11}
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!11 = !DIGlobalVariable(name: "f", line: 6, isLocal: false, isDefinition: true, scope: null, file: !12, type: !4, variable: %struct.foo* @f)
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!12 = !DIFile(filename: "data_member_location.cpp", directory: "/tmp/dbginfo")
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{!"clang version 3.4 "}
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!15 = !{i32 1, !"Debug Info Version", i32 3}
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