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DebugInfo: Move new hierarchy into place

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Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464.  I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned.  Let me know if I'm wrong :).

The code changes are fairly mechanical:

  - Bumped the "Debug Info Version".
  - `DIBuilder` now creates the appropriate subclass of `MDNode`.
  - Subclasses of DIDescriptor now expect to hold their "MD"
    counterparts (e.g., `DIBasicType` expects `MDBasicType`).
  - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
    for printing comments.
  - Big update to LangRef to describe the nodes in the new hierarchy.
    Feel free to make it better.

Testcase changes are enormous.  There's an accompanying clang commit on
its way.

If you have out-of-tree debug info testcases, I just broke your build.

  - `upgrade-specialized-nodes.sh` is attached to PR22564.  I used it to
    update all the IR testcases.
  - Unfortunately I failed to find way to script the updates to CHECK
    lines, so I updated all of these by hand.  This was fairly painful,
    since the old CHECKs are difficult to reason about.  That's one of
    the benefits of the new hierarchy.

This work isn't quite finished, BTW.  The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro).  Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers.  I
also expect to make a few schema changes now that it's easier to reason
about everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-03-03 17:24:31 +00:00
parent 853cd2630e
commit b056aa798d
380 changed files with 7663 additions and 8186 deletions
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56
test/DebugInfo/incorrect-variable-debugloc.ll
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@@ -110,7 +110,7 @@ entry:
; <label>:30 ; preds = %24, %5
store i32 0, i32* %i.i, align 4, !dbg !39, !tbaa !41
tail call void @llvm.dbg.value(metadata %struct.C* %8, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !46
tail call void @llvm.dbg.value(metadata %struct.C* %8, i64 0, metadata !27, metadata !MDExpression()), !dbg !46
call void @_ZN1C5m_fn3Ev(%struct.C* %8), !dbg !47
unreachable, !dbg !47
}
@@ -145,7 +145,7 @@ entry:
%16 = add i64 %15, 0, !dbg !48
%17 = inttoptr i64 %16 to i64*, !dbg !48
store i64 -868083113472691727, i64* %17, !dbg !48
tail call void @llvm.dbg.value(metadata %struct.C* %this, i64 0, metadata !30, metadata !{!"0x102"}), !dbg !48
tail call void @llvm.dbg.value(metadata %struct.C* %this, i64 0, metadata !30, metadata !MDExpression()), !dbg !48
%call = call i32 @_ZN1A5m_fn1Ev(%struct.A* %8), !dbg !49
%i.i = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 1, i32 0, !dbg !50
%18 = ptrtoint i32* %i.i to i64, !dbg !50
@@ -336,44 +336,44 @@ attributes #3 = { nounwind readnone }
!llvm.module.flags = !{!36, !37}
!llvm.ident = !{!38}
!0 = !{!"0x11\004\00clang version 3.5.0 \001\00\000\00\001", !1, !2, !3, !21, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/<stdin>] [DW_LANG_C_plus_plus]
!1 = !{!"<stdin>", !"/tmp/dbginfo"}
!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !21, globals: !2, imports: !2)
!1 = !MDFile(filename: "<stdin>", directory: "/tmp/dbginfo")
!2 = !{}
!3 = !{!4, !14}
!4 = !{!"0x13\00C\0010\0064\0032\000\000\000", !5, null, null, !6, null, null, !"_ZTS1C"} ; [ DW_TAG_structure_type ] [C] [line 10, size 64, align 32, offset 0] [def] [from ]
!5 = !{!"incorrect-variable-debug-loc.cpp", !"/tmp/dbginfo"}
!4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "C", line: 10, size: 64, align: 32, file: !5, elements: !6, identifier: "_ZTS1C")
!5 = !MDFile(filename: "incorrect-variable-debug-loc.cpp", directory: "/tmp/dbginfo")
!6 = !{!7, !9, !10}
!7 = !{!"0xd\00j\0012\0032\0032\000\000", !5, !"_ZTS1C", !8} ; [ DW_TAG_member ] [j] [line 12, size 32, align 32, offset 0] [from int]
!8 = !{!"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]
!9 = !{!"0xd\00b\0013\0032\0032\0032\000", !5, !"_ZTS1C", !"_ZTS1B"} ; [ DW_TAG_member ] [b] [line 13, size 32, align 32, offset 32] [from _ZTS1B]
!10 = !{!"0x2e\00m_fn3\00m_fn3\00_ZN1C5m_fn3Ev\0011\000\000\000\006\00256\001\0011", !5, !"_ZTS1C", !11, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 11] [m_fn3]
!11 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = !MDDerivedType(tag: DW_TAG_member, name: "j", line: 12, size: 32, align: 32, file: !5, scope: !"_ZTS1C", baseType: !8)
!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 13, size: 32, align: 32, offset: 32, file: !5, scope: !"_ZTS1C", baseType: !"_ZTS1B")
!10 = !MDSubprogram(name: "m_fn3", linkageName: "_ZN1C5m_fn3Ev", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !5, scope: !"_ZTS1C", type: !11)
!11 = !MDSubroutineType(types: !12)
!12 = !{null, !13}
!13 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
!14 = !{!"0x13\00B\005\0032\0032\000\000\000", !5, null, null, !15, null, null, !"_ZTS1B"} ; [ DW_TAG_structure_type ] [B] [line 5, size 32, align 32, offset 0] [def] [from ]
!13 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1C")
!14 = !MDCompositeType(tag: DW_TAG_structure_type, name: "B", line: 5, size: 32, align: 32, file: !5, elements: !15, identifier: "_ZTS1B")
!15 = !{!16, !17}
!16 = !{!"0xd\00i\007\0032\0032\000\000", !5, !"_ZTS1B", !8} ; [ DW_TAG_member ] [i] [line 7, size 32, align 32, offset 0] [from int]
!17 = !{!"0x2e\00m_fn2\00m_fn2\00_ZN1B5m_fn2Ev\006\000\000\000\006\00256\001\006", !5, !"_ZTS1B", !18, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 6] [m_fn2]
!18 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!16 = !MDDerivedType(tag: DW_TAG_member, name: "i", line: 7, size: 32, align: 32, file: !5, scope: !"_ZTS1B", baseType: !8)
!17 = !MDSubprogram(name: "m_fn2", linkageName: "_ZN1B5m_fn2Ev", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !18)
!18 = !MDSubroutineType(types: !19)
!19 = !{null, !20}
!20 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !"_ZTS1B"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1B]
!20 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1B")
!21 = !{!22, !28, !32}
!22 = !{!"0x2e\00fn1\00fn1\00_Z3fn1v\0016\000\001\000\006\00256\001\0016", !5, !23, !24, null, i32 ()* @_Z3fn1v, null, null, !26} ; [ DW_TAG_subprogram ] [line 16] [def] [fn1]
!23 = !{!"0x29", !5} ; [ DW_TAG_file_type ] [/tmp/dbginfo/incorrect-variable-debug-loc.cpp]
!24 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !25, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!22 = !MDSubprogram(name: "fn1", linkageName: "_Z3fn1v", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 16, file: !5, scope: !23, type: !24, function: i32 ()* @_Z3fn1v, variables: !26)
!23 = !MDFile(filename: "incorrect-variable-debug-loc.cpp", directory: "/tmp/dbginfo")
!24 = !MDSubroutineType(types: !25)
!25 = !{!8}
!26 = !{!27}
!27 = !{!"0x100\00A\0017\000", !22, !23, !"_ZTS1C"} ; [ DW_TAG_auto_variable ] [A] [line 17]
!28 = !{!"0x2e\00m_fn3\00m_fn3\00_ZN1C5m_fn3Ev\0021\000\001\000\006\00256\001\0021", !5, !"_ZTS1C", !11, null, void (%struct.C*)* @_ZN1C5m_fn3Ev, null, !10, !29} ; [ DW_TAG_subprogram ] [line 21] [def] [m_fn3]
!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "A", line: 17, scope: !22, file: !23, type: !"_ZTS1C")
!28 = !MDSubprogram(name: "m_fn3", linkageName: "_ZN1C5m_fn3Ev", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 21, file: !5, scope: !"_ZTS1C", type: !11, function: void (%struct.C*)* @_ZN1C5m_fn3Ev, declaration: !10, variables: !29)
!29 = !{!30}
!30 = !{!"0x101\00this\0016777216\001088", !28, null, !31} ; [ DW_TAG_arg_variable ] [this] [line 0]
!31 = !{!"0xf\00\000\0064\0064\000\000", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1C]
!32 = !{!"0x2e\00m_fn2\00m_fn2\00_ZN1B5m_fn2Ev\006\000\001\000\006\00256\001\006", !5, !"_ZTS1B", !18, null, null, null, !17, !33} ; [ DW_TAG_subprogram ] [line 6] [def] [m_fn2]
!30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31)
!31 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1C")
!32 = !MDSubprogram(name: "m_fn2", linkageName: "_ZN1B5m_fn2Ev", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !18, declaration: !17, variables: !33)
!33 = !{!34}
!34 = !{!"0x101\00this\0016777216\001088", !32, null, !35} ; [ DW_TAG_arg_variable ] [this] [line 0]
!35 = !{!"0xf\00\000\0064\0064\000\000", null, null, !"_ZTS1B"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1B]
!34 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !32, type: !35)
!35 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1B")
!36 = !{i32 2, !"Dwarf Version", i32 4}
!37 = !{i32 2, !"Debug Info Version", i32 2}
!37 = !{i32 2, !"Debug Info Version", i32 3}
!38 = !{!"clang version 3.5.0 "}
!39 = !MDLocation(line: 6, scope: !32, inlinedAt: !40)
!40 = !MDLocation(line: 18, scope: !22)