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[DWARF] Add support for DW_TAG_template_alias for template aliases (#…
…88943) Part 1 of fix for issue #54624 Split from PR #87623. Clang front end changes to follow. Use DICompositeType to represent the template alias, using its extraData field as a tuple of DITemplateParameter to describe the template parameters. Added template-alias.ll - Check DWARF emission. Modified frame-types.s - Check llvm-symbolizer understands the DIE.
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; RUN: llc %s -o - --filetype=obj | llvm-dwarfdump - --name A --show-children | FileCheck %s --check-prefix=TREE | ||
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;; -ggnu-pubnames (nameTableKind: GNU). | ||
; RUN: llc %s -o - --filetype=obj \ | ||
; RUN: | llvm-dwarfdump - --debug-gnu-pubtypes \ | ||
; RUN: | FileCheck %s --check-prefix=GNU-TYPES | ||
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;; -gpubnames (remove nameTableKind field from DICompileUnit). | ||
; RUN: sed 's/, nameTableKind: GNU//g' < %s \ | ||
; RUN: | llc - -o - --filetype=obj \ | ||
; RUN: | llvm-dwarfdump - --debug-pubtypes \ | ||
; RUN: | FileCheck %s --check-prefix=PUB-TYPES | ||
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;; C++ source from clang/test/CodeGenCXX/template-alias.cpp, compiled with -gsce: | ||
;; template<typename Y, int Z> | ||
;; struct X { | ||
;; Y m1 = Z; | ||
;; }; | ||
;; | ||
;; template<typename B, int C> | ||
;; using A = X<B, C>; | ||
;; | ||
;; A<int, 5> a; | ||
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;; Test emission of DIDerivedType with tag: DW_TAG_template_alias. | ||
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; TREE: DW_TAG_template_alias | ||
; TREE: DW_AT_type (0x{{[0-9a-f]+}} "X<int, 5>") | ||
; TREE: DW_AT_name ("A") | ||
; TREE: DW_TAG_template_type_parameter | ||
; TREE: DW_AT_type (0x{{[0-9a-f]+}} "int") | ||
; TREE: DW_AT_name ("B") | ||
; TREE: DW_TAG_template_value_parameter | ||
; TREE: DW_AT_type (0x{{[0-9a-f]+}} "int") | ||
; TREE: DW_AT_name ("C") | ||
; TREE: DW_AT_const_value (5) | ||
; TREE: NULL | ||
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; GNU-TYPES: STATIC TYPE "A" | ||
; PUB-TYPES: "A" | ||
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target triple = "x86_64-unknown-unkown" | ||
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%struct.X = type { i32 } | ||
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@a = global %struct.X { i32 5 }, align 4, !dbg !0 | ||
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!llvm.dbg.cu = !{!2} | ||
!llvm.module.flags = !{!17, !18} | ||
!llvm.ident = !{!19} | ||
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) | ||
!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !5, line: 14, type: !6, isLocal: false, isDefinition: true) | ||
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 19.0.0git", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: GNU) | ||
!3 = !DIFile(filename: "<stdin>", directory: "/") | ||
!4 = !{!0} | ||
!5 = !DIFile(filename: "clang/test/CodeGenCXX/template-alias.cpp", directory: "/") | ||
!6 = !DIDerivedType(tag: DW_TAG_template_alias, name: "A", file: !5, line: 12, baseType: !7, extraData: !14) | ||
!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "X<int, 5>", file: !5, line: 7, size: 32, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !8, templateParams: !11, identifier: "_ZTS1XIiLi5EE") | ||
!8 = !{!9} | ||
!9 = !DIDerivedType(tag: DW_TAG_member, name: "m1", scope: !7, file: !5, line: 8, baseType: !10, size: 32) | ||
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) | ||
!11 = !{!12, !13} | ||
!12 = !DITemplateTypeParameter(name: "Y", type: !10) | ||
!13 = !DITemplateValueParameter(name: "Z", type: !10, value: i32 5) | ||
!14 = !{!15, !16} | ||
!15 = !DITemplateTypeParameter(name: "B", type: !10) | ||
!16 = !DITemplateValueParameter(name: "C", type: !10, value: i32 5) | ||
!17 = !{i32 2, !"Debug Info Version", i32 3} | ||
!18 = !{i32 1, !"wchar_size", i32 4} | ||
!19 = !{!"clang version 19.0.0git"} |
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