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37ac8d3622
This commit moves `MDLocation`, finishing off PR21433. There's an
accompanying clang commit for frontend testcases. I'll attach the
testcase upgrade script I used to PR21433 to help out-of-tree
frontends/backends.
This changes the schema for `DebugLoc` and `DILocation` from:
!{i32 3, i32 7, !7, !8}
to:
!MDLocation(line: 3, column: 7, scope: !7, inlinedAt: !8)
Note that empty fields (line/column: 0 and inlinedAt: null) don't get
printed by the assembly writer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226048 91177308-0d34-0410-b5e6-96231b3b80d8
120 lines
5.6 KiB
LLVM
120 lines
5.6 KiB
LLVM
; RUN: llc -split-dwarf=Enable -O0 < %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; Test the emission of gmlt-like inlining information into the skeleton unit.
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; This allows inline-aware symbolication/backtracing given only the linked
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; executable, without needing access to the .dwos.
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; A simple example of inlining generated with clang -gsplit-dwarf
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; A member function is used to force emission of the declaration of the
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; function into the .dwo file, which may be shared with other CUs in the dwo ;
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; under fission, but should not be shared with the skeleton's CU. This also
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; tests the general case of context emission, which is suppressed in gmlt-like
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; data.
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; Include a template just to test template parameters are not emitted in
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; gmlt-like data.
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; And some varargs to make sure DW_TAG_unspecified_parameters is not emitted.
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; And a using declaration in a nested lexical_block... because that shouldn't
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; be emitted either.
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; Minor complication: after generating the LLVM IR, it was manually edited so
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; that the 'f1()' call from f3 was reordered to appear between the two inlined
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; f1 calls from f2. This causes f2's inlined_subroutine to use DW_AT_ranges,
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; thus exercising range list generation/referencing which was buggy.
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; struct foo {
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; template<typename T>
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; static void f2();
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; static void f3(...);
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; };
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;
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; void f1();
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;
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; template<typename T>
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; inline __attribute__((always_inline)) void foo::f2() {
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; f1();
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; f1();
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; }
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;
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; void foo::f3(...) {
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; if (true) {
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; f1();
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; f2<int>();
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; using ::foo;
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; }
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; }
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; Check that we emit the usual gmlt-like data for this file, including brief
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; descriptions of subprograms with inlined scopes.
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; FIXME: Once tools support indexed addresses in the skeleton CU, we should use
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; those (DW_FORM_addr would become DW_FORM_GNU_addr_index below) since those
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; addresses will already be in the address pool anyway.
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; CHECK: DW_TAG_subprogram
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; CHECK-NEXT: DW_AT_name {{.*}} "f2<int>"
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; CHECK-NOT: DW_
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; CHECK: DW_TAG_subprogram
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; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr]
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; CHECK-NEXT: DW_AT_high_pc
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; CHECK-NEXT: DW_AT_name {{.*}} "f3"
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; CHECK-NOT: {{DW_|NULL}}
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f2<int>"
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; CHECK-NEXT: DW_AT_ranges
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; CHECK-NEXT: DW_AT_call_file
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; CHECK-NEXT: DW_AT_call_line {{.*}} (18)
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; CHECK-NOT: DW_
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; Function Attrs: uwtable
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define void @_ZN3foo2f3Ez(...) #0 align 2 {
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entry:
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call void @_Z2f1v(), !dbg !26
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call void @_Z2f1v(), !dbg !25
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call void @_Z2f1v(), !dbg !28
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ret void, !dbg !29
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}
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declare void @_Z2f1v() #1
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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" }
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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" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!22, !23}
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!llvm.ident = !{!24}
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!0 = !{!"0x11\004\00clang version 3.6.0 \000\00\000\00fission-inline.dwo\001", !1, !2, !3, !9, !2, !18} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/fission-inline.cpp] [DW_LANG_C_plus_plus]
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!1 = !{!"fission-inline.cpp", !"/tmp/dbginfo"}
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!2 = !{}
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!3 = !{!4}
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!4 = !{!"0x13\00foo\001\008\008\000\000\000", !1, null, null, !5, null, null, !"_ZTS3foo"} ; [ DW_TAG_structure_type ] [foo] [line 1, size 8, align 8, offset 0] [def] [from ]
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!5 = !{!6}
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!6 = !{!"0x2e\00f3\00f3\00_ZN3foo2f3Ez\004\000\000\000\000\00256\000\004", !1, !"_ZTS3foo", !7, null, null, null, null, null} ; [ DW_TAG_subprogram ] [line 4] [f3]
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!7 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = !{null, null}
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!9 = !{!10, !11}
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!10 = !{!"0x2e\00f3\00f3\00_ZN3foo2f3Ez\0015\000\001\000\000\00256\000\0015", !1, !"_ZTS3foo", !7, null, void (...)* @_ZN3foo2f3Ez, null, !6, !2} ; [ DW_TAG_subprogram ] [line 15] [def] [f3]
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!11 = !{!"0x2e\00f2<int>\00f2<int>\00_ZN3foo2f2IiEEvv\0010\000\001\000\000\00256\000\0010", !1, !"_ZTS3foo", !12, null, null, !14, !17, !2} ; [ DW_TAG_subprogram ] [line 10] [def] [f2<int>]
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!12 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !13, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!13 = !{null}
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!14 = !{!15}
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!15 = !{!"0x2f\00T\000\000", null, !16, null} ; [ DW_TAG_template_type_parameter ]
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!16 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!17 = !{!"0x2e\00f2<int>\00f2<int>\00_ZN3foo2f2IiEEvv\0010\000\000\000\000\00256\000\0010", !1, !"_ZTS3foo", !12, null, null, !14, null, null} ; [ DW_TAG_subprogram ] [line 10] [f2<int>]
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!18 = !{!19}
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!19 = !{!"0x8\0019\00", !20, !"_ZTS3foo"} ; [ DW_TAG_imported_declaration ]
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!20 = !{!"0xb\0016\0013\001", !1, !21} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/fission-inline.cpp]
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!21 = !{!"0xb\0016\007\000", !1, !10} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/fission-inline.cpp]
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!22 = !{i32 2, !"Dwarf Version", i32 4}
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!23 = !{i32 2, !"Debug Info Version", i32 2}
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!24 = !{!"clang version 3.6.0 "}
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!25 = !MDLocation(line: 17, column: 5, scope: !20)
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!26 = !MDLocation(line: 11, column: 3, scope: !11, inlinedAt: !27)
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!27 = !MDLocation(line: 18, column: 5, scope: !20)
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!28 = !MDLocation(line: 12, column: 3, scope: !11, inlinedAt: !27)
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!29 = !MDLocation(line: 21, column: 1, scope: !10)
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