mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
a2029fa58e
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
125 lines
5.7 KiB
LLVM
125 lines
5.7 KiB
LLVM
; RUN: llc -split-dwarf-file=foo.dwo -O0 < %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj > %t
|
|
; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
|
|
; RUN: llvm-objdump -r %t | FileCheck --check-prefix=RELOCS %s
|
|
|
|
; Test the emission of gmlt-like inlining information into the skeleton unit.
|
|
; This allows inline-aware symbolication/backtracing given only the linked
|
|
; executable, without needing access to the .dwos.
|
|
|
|
; A simple example of inlining generated with clang -gsplit-dwarf
|
|
|
|
; A member function is used to force emission of the declaration of the
|
|
; function into the .dwo file, which may be shared with other CUs in the dwo ;
|
|
; under fission, but should not be shared with the skeleton's CU. This also
|
|
; tests the general case of context emission, which is suppressed in gmlt-like
|
|
; data.
|
|
|
|
; Include a template just to test template parameters are not emitted in
|
|
; gmlt-like data.
|
|
|
|
; And some varargs to make sure DW_TAG_unspecified_parameters is not emitted.
|
|
|
|
; And a using declaration in a nested lexical_block... because that shouldn't
|
|
; be emitted either.
|
|
|
|
; Minor complication: after generating the LLVM IR, it was manually edited so
|
|
; that the 'f1()' call from f3 was reordered to appear between the two inlined
|
|
; f1 calls from f2. This causes f2's inlined_subroutine to use DW_AT_ranges,
|
|
; thus exercising range list generation/referencing which was buggy.
|
|
|
|
; struct foo {
|
|
; template<typename T>
|
|
; static void f2();
|
|
; static void f3(...);
|
|
; };
|
|
;
|
|
; void f1();
|
|
;
|
|
; template<typename T>
|
|
; inline __attribute__((always_inline)) void foo::f2() {
|
|
; f1();
|
|
; f1();
|
|
; }
|
|
;
|
|
; void foo::f3(...) {
|
|
; if (true) {
|
|
; f1();
|
|
; f2<int>();
|
|
; using ::foo;
|
|
; }
|
|
; }
|
|
|
|
; Check that we emit the usual gmlt-like data for this file, including brief
|
|
; descriptions of subprograms with inlined scopes.
|
|
|
|
; FIXME: Once tools support indexed addresses in the skeleton CU, we should use
|
|
; those (DW_FORM_addr would become DW_FORM_GNU_addr_index below) since those
|
|
; addresses will already be in the address pool anyway.
|
|
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NEXT: DW_AT_name {{.*}} "f2<int>"
|
|
; CHECK-NOT: DW_
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr]
|
|
; CHECK-NEXT: DW_AT_high_pc
|
|
; CHECK-NEXT: DW_AT_name {{.*}} "f3"
|
|
; CHECK-NOT: {{DW_|NULL}}
|
|
; CHECK: DW_TAG_inlined_subroutine
|
|
; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f2<int>"
|
|
; CHECK-NEXT: DW_AT_ranges
|
|
; CHECK-NOT: {{DW_AT|DW_TAG|NULL}}
|
|
; CHECK: DW_AT_call_file
|
|
; CHECK-NEXT: DW_AT_call_line {{.*}} (18)
|
|
; CHECK-NOT: DW_
|
|
; CHECK: .debug_info.dwo contents:
|
|
|
|
; RELOCS-NOT: RELOCATION RECORDS FOR [.rela.debug_ranges]
|
|
|
|
; Function Attrs: uwtable
|
|
define void @_ZN3foo2f3Ez(...) #0 align 2 !dbg !10 {
|
|
entry:
|
|
call void @_Z2f1v(), !dbg !26
|
|
call void @_Z2f1v(), !dbg !25
|
|
call void @_Z2f1v(), !dbg !28
|
|
ret void, !dbg !29
|
|
}
|
|
|
|
declare void @_Z2f1v() #1
|
|
|
|
attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!22, !23}
|
|
!llvm.ident = !{!24}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, splitDebugFilename: "fission-inline.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !18)
|
|
!1 = !DIFile(filename: "fission-inline.cpp", directory: "/tmp/dbginfo")
|
|
!2 = !{}
|
|
!3 = !{!4}
|
|
!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS3foo")
|
|
!5 = !{!6}
|
|
!6 = !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 4, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !4, type: !7)
|
|
!7 = !DISubroutineType(types: !8)
|
|
!8 = !{null, null}
|
|
!10 = distinct !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 15, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 15, file: !1, scope: !4, type: !7, declaration: !6, retainedNodes: !2)
|
|
!11 = distinct !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !4, type: !12, templateParams: !14, declaration: !17, retainedNodes: !2)
|
|
!12 = !DISubroutineType(types: !13)
|
|
!13 = !{null}
|
|
!14 = !{!15}
|
|
!15 = !DITemplateTypeParameter(name: "T", type: !16)
|
|
!16 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!17 = !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !4, type: !12, templateParams: !14)
|
|
!18 = !{!19}
|
|
!19 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !1, line: 19, scope: !20, entity: !4)
|
|
!20 = distinct !DILexicalBlock(line: 16, column: 13, file: !1, scope: !21)
|
|
!21 = distinct !DILexicalBlock(line: 16, column: 7, file: !1, scope: !10)
|
|
!22 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!23 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!24 = !{!"clang version 3.6.0 "}
|
|
!25 = !DILocation(line: 17, column: 5, scope: !20)
|
|
!26 = !DILocation(line: 11, column: 3, scope: !11, inlinedAt: !27)
|
|
!27 = !DILocation(line: 18, column: 5, scope: !20)
|
|
!28 = !DILocation(line: 12, column: 3, scope: !11, inlinedAt: !27)
|
|
!29 = !DILocation(line: 21, column: 1, scope: !10)
|