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llvm-6502/test/DebugInfo/X86/dbg-declare-arg.ll
Duncan P. N. Exon Smith b056aa798d DebugInfo: Move new hierarchy into place 
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
2015-03-03 17:24:31 +00:00

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; RUN: llc -O0 -fast-isel=false < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-macosx10.6.7"
;Radar 9321650
;CHECK: ##DEBUG_VALUE: my_a
%class.A = type { i32, i32, i32, i32 }
define void @_Z3fooi(%class.A* sret %agg.result, i32 %i) ssp {
entry:
%i.addr = alloca i32, align 4
%j = alloca i32, align 4
%nrvo = alloca i1
%cleanup.dest.slot = alloca i32
store i32 %i, i32* %i.addr, align 4
call void @llvm.dbg.declare(metadata i32* %i.addr, metadata !26, metadata !MDExpression()), !dbg !27
call void @llvm.dbg.declare(metadata i32* %j, metadata !28, metadata !MDExpression()), !dbg !30
store i32 0, i32* %j, align 4, !dbg !31
%tmp = load i32, i32* %i.addr, align 4, !dbg !32
%cmp = icmp eq i32 %tmp, 42, !dbg !32
br i1 %cmp, label %if.then, label %if.end, !dbg !32
if.then: ; preds = %entry
%tmp1 = load i32, i32* %i.addr, align 4, !dbg !33
%add = add nsw i32 %tmp1, 1, !dbg !33
store i32 %add, i32* %j, align 4, !dbg !33
br label %if.end, !dbg !35
if.end: ; preds = %if.then, %entry
store i1 false, i1* %nrvo, !dbg !36
call void @llvm.dbg.declare(metadata %class.A* %agg.result, metadata !37, metadata !MDExpression()), !dbg !39
%tmp2 = load i32, i32* %j, align 4, !dbg !40
%x = getelementptr inbounds %class.A, %class.A* %agg.result, i32 0, i32 0, !dbg !40
store i32 %tmp2, i32* %x, align 4, !dbg !40
store i1 true, i1* %nrvo, !dbg !41
store i32 1, i32* %cleanup.dest.slot
%nrvo.val = load i1, i1* %nrvo, !dbg !42
br i1 %nrvo.val, label %nrvo.skipdtor, label %nrvo.unused, !dbg !42
nrvo.unused: ; preds = %if.end
call void @_ZN1AD1Ev(%class.A* %agg.result), !dbg !42
br label %nrvo.skipdtor, !dbg !42
nrvo.skipdtor: ; preds = %nrvo.unused, %if.end
ret void, !dbg !42
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define linkonce_odr void @_ZN1AD1Ev(%class.A* %this) unnamed_addr ssp align 2 {
entry:
%this.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !43, metadata !MDExpression()), !dbg !44
%this1 = load %class.A*, %class.A** %this.addr
call void @_ZN1AD2Ev(%class.A* %this1)
ret void, !dbg !45
}
define linkonce_odr void @_ZN1AD2Ev(%class.A* %this) unnamed_addr nounwind ssp align 2 {
entry:
%this.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !46, metadata !MDExpression()), !dbg !47
%this1 = load %class.A*, %class.A** %this.addr
%x = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 0, !dbg !48
store i32 1, i32* %x, align 4, !dbg !48
ret void, !dbg !48
}
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!52}
!0 = !MDSubprogram(name: "~A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !11)
!1 = !MDCompositeType(tag: DW_TAG_class_type, name: "A", line: 2, size: 128, align: 32, file: !51, scope: !2, elements: !4)
!2 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130127)", isOptimized: false, emissionKind: 1, file: !51, enums: !24, retainedTypes: !24, subprograms: !50)
!3 = !MDFile(filename: "a.cc", directory: "/private/tmp")
!4 = !{!5, !7, !8, !9, !0, !10, !14}
!5 = !MDDerivedType(tag: DW_TAG_member, name: "x", line: 2, size: 32, align: 32, file: !51, scope: !3, baseType: !6)
!6 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!7 = !MDDerivedType(tag: DW_TAG_member, name: "y", line: 2, size: 32, align: 32, offset: 32, file: !51, scope: !3, baseType: !6)
!8 = !MDDerivedType(tag: DW_TAG_member, name: "z", line: 2, size: 32, align: 32, offset: 64, file: !51, scope: !3, baseType: !6)
!9 = !MDDerivedType(tag: DW_TAG_member, name: "o", line: 2, size: 32, align: 32, offset: 96, file: !51, scope: !3, baseType: !6)
!10 = !MDSubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !11)
!11 = !MDSubroutineType(types: !12)
!12 = !{null, !13}
!13 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !2, baseType: !1)
!14 = !MDSubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !15)
!15 = !MDSubroutineType(types: !16)
!16 = !{null, !13, !17}
!17 = !MDDerivedType(tag: DW_TAG_reference_type, scope: !2, baseType: !18)
!18 = !MDDerivedType(tag: DW_TAG_const_type, file: !2, baseType: !1)
!19 = !MDSubprogram(name: "foo", linkageName: "_Z3fooi", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !3, type: !20, function: void (%class.A*, i32)* @_Z3fooi)
!20 = !MDSubroutineType(types: !21)
!21 = !{!1}
!22 = !MDSubprogram(name: "~A", linkageName: "_ZN1AD1Ev", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !3, type: !23, function: void (%class.A*)* @_ZN1AD1Ev)
!23 = !MDSubroutineType(types: !24)
!24 = !{null}
!25 = !MDSubprogram(name: "~A", linkageName: "_ZN1AD2Ev", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !3, type: !23, function: void (%class.A*)* @_ZN1AD2Ev)
!26 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "i", line: 4, arg: 1, scope: !19, file: !3, type: !6)
!27 = !MDLocation(line: 4, column: 11, scope: !19)
!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 5, scope: !29, file: !3, type: !6)
!29 = distinct !MDLexicalBlock(line: 4, column: 14, file: !51, scope: !19)
!30 = !MDLocation(line: 5, column: 7, scope: !29)
!31 = !MDLocation(line: 5, column: 12, scope: !29)
!32 = !MDLocation(line: 6, column: 3, scope: !29)
!33 = !MDLocation(line: 7, column: 5, scope: !34)
!34 = distinct !MDLexicalBlock(line: 6, column: 16, file: !51, scope: !29)
!35 = !MDLocation(line: 8, column: 3, scope: !34)
!36 = !MDLocation(line: 9, column: 9, scope: !29)
!37 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "my_a", line: 9, scope: !29, file: !3, type: !38)
!38 = !MDDerivedType(tag: DW_TAG_reference_type, file: !2, baseType: !1)
!39 = !MDLocation(line: 9, column: 5, scope: !29)
!40 = !MDLocation(line: 10, column: 3, scope: !29)
!41 = !MDLocation(line: 11, column: 3, scope: !29)
!42 = !MDLocation(line: 12, column: 1, scope: !29)
!43 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 2, arg: 1, flags: DIFlagArtificial, scope: !22, file: !3, type: !13)
!44 = !MDLocation(line: 2, column: 47, scope: !22)
!45 = !MDLocation(line: 2, column: 61, scope: !22)
!46 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 2, arg: 1, flags: DIFlagArtificial, scope: !25, file: !3, type: !13)
!47 = !MDLocation(line: 2, column: 47, scope: !25)
!48 = !MDLocation(line: 2, column: 54, scope: !49)
!49 = distinct !MDLexicalBlock(line: 2, column: 52, file: !51, scope: !25)
!50 = !{!19, !22, !25}
!51 = !MDFile(filename: "a.cc", directory: "/private/tmp")
!52 = !{i32 1, !"Debug Info Version", i32 3}
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