llvm-6502/test/DebugInfo/X86/2011-12-16-BadStructRef.ll

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; RUN: llc -mtriple=x86_64-apple-macosx10.7 %s -o %t -filetype=obj
; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
; CHECK: b_ref
; CHECK-NOT: AT_bit_size
%struct.bar = type { %struct.baz, %struct.baz* }
%struct.baz = type { i32 }
define i32 @main(i32 %argc, i8** %argv) uwtable ssp {
entry:
%retval = alloca i32, align 4
%argc.addr = alloca i32, align 4
%argv.addr = alloca i8**, align 8
%myBar = alloca %struct.bar, align 8
store i32 0, i32* %retval
store i32 %argc, i32* %argc.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %argc.addr}, metadata !49, metadata !{i32 786690}), !dbg !50
store i8** %argv, i8*** %argv.addr, align 8
call void @llvm.dbg.declare(metadata !{i8*** %argv.addr}, metadata !51, metadata !{i32 786690}), !dbg !52
call void @llvm.dbg.declare(metadata !{%struct.bar* %myBar}, metadata !53, metadata !{i32 786690}), !dbg !55
call void @_ZN3barC1Ei(%struct.bar* %myBar, i32 1), !dbg !56
ret i32 0, !dbg !57
}
Move the complex address expression out of DIVariable and into an extra argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-01 18:55:02 +00:00
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define linkonce_odr void @_ZN3barC1Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 {
entry:
%this.addr = alloca %struct.bar*, align 8
%x.addr = alloca i32, align 4
store %struct.bar* %this, %struct.bar** %this.addr, align 8
call void @llvm.dbg.declare(metadata !{%struct.bar** %this.addr}, metadata !58, metadata !{i32 786690}), !dbg !59
store i32 %x, i32* %x.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %x.addr}, metadata !60, metadata !{i32 786690}), !dbg !61
%this1 = load %struct.bar** %this.addr
%0 = load i32* %x.addr, align 4, !dbg !62
call void @_ZN3barC2Ei(%struct.bar* %this1, i32 %0), !dbg !62
ret void, !dbg !62
}
define linkonce_odr void @_ZN3barC2Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 {
entry:
%this.addr = alloca %struct.bar*, align 8
%x.addr = alloca i32, align 4
store %struct.bar* %this, %struct.bar** %this.addr, align 8
call void @llvm.dbg.declare(metadata !{%struct.bar** %this.addr}, metadata !63, metadata !{i32 786690}), !dbg !64
store i32 %x, i32* %x.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %x.addr}, metadata !65, metadata !{i32 786690}), !dbg !66
%this1 = load %struct.bar** %this.addr
%b = getelementptr inbounds %struct.bar* %this1, i32 0, i32 0, !dbg !67
%0 = load i32* %x.addr, align 4, !dbg !67
call void @_ZN3bazC1Ei(%struct.baz* %b, i32 %0), !dbg !67
%1 = getelementptr inbounds %struct.bar* %this1, i32 0, i32 1, !dbg !67
%b2 = getelementptr inbounds %struct.bar* %this1, i32 0, i32 0, !dbg !67
store %struct.baz* %b2, %struct.baz** %1, align 8, !dbg !67
ret void, !dbg !68
}
define linkonce_odr void @_ZN3bazC1Ei(%struct.baz* %this, i32 %a) unnamed_addr uwtable ssp align 2 {
entry:
%this.addr = alloca %struct.baz*, align 8
%a.addr = alloca i32, align 4
store %struct.baz* %this, %struct.baz** %this.addr, align 8
call void @llvm.dbg.declare(metadata !{%struct.baz** %this.addr}, metadata !70, metadata !{i32 786690}), !dbg !71
store i32 %a, i32* %a.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %a.addr}, metadata !72, metadata !{i32 786690}), !dbg !73
%this1 = load %struct.baz** %this.addr
%0 = load i32* %a.addr, align 4, !dbg !74
call void @_ZN3bazC2Ei(%struct.baz* %this1, i32 %0), !dbg !74
ret void, !dbg !74
}
define linkonce_odr void @_ZN3bazC2Ei(%struct.baz* %this, i32 %a) unnamed_addr nounwind uwtable ssp align 2 {
entry:
%this.addr = alloca %struct.baz*, align 8
%a.addr = alloca i32, align 4
store %struct.baz* %this, %struct.baz** %this.addr, align 8
call void @llvm.dbg.declare(metadata !{%struct.baz** %this.addr}, metadata !75, metadata !{i32 786690}), !dbg !76
store i32 %a, i32* %a.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %a.addr}, metadata !77, metadata !{i32 786690}), !dbg !78
%this1 = load %struct.baz** %this.addr
%h = getelementptr inbounds %struct.baz* %this1, i32 0, i32 0, !dbg !79
%0 = load i32* %a.addr, align 4, !dbg !79
store i32 %0, i32* %h, align 4, !dbg !79
ret void, !dbg !80
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!83}
!0 = metadata !{i32 720913, metadata !82, i32 4, metadata !"clang version 3.1 (trunk 146596)", i1 false, metadata !"", i32 0, metadata !1, metadata !3, metadata !27, metadata !1, metadata !1, metadata !""} ; [ DW_TAG_compile_unit ]
!1 = metadata !{}
!3 = metadata !{metadata !5, metadata !9}
!5 = metadata !{i32 720898, metadata !82, null, metadata !"bar", i32 9, i64 128, i64 64, i32 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_class_type ] [bar] [line 9, size 128, align 64, offset 0] [def] [from ]
!6 = metadata !{i32 720937, metadata !82} ; [ DW_TAG_file_type ]
!7 = metadata !{metadata !8, metadata !19, metadata !21}
!8 = metadata !{i32 720909, metadata !82, metadata !5, metadata !"b", i32 11, i64 32, i64 32, i64 0, i32 0, metadata !9} ; [ DW_TAG_member ]
!9 = metadata !{i32 720898, metadata !82, null, metadata !"baz", i32 3, i64 32, i64 32, i32 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_class_type ] [baz] [line 3, size 32, align 32, offset 0] [def] [from ]
!10 = metadata !{metadata !11, metadata !13}
!11 = metadata !{i32 720909, metadata !82, metadata !9, metadata !"h", i32 5, i64 32, i64 32, i64 0, i32 0, metadata !12} ; [ DW_TAG_member ]
!12 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!13 = metadata !{i32 720942, metadata !82, metadata !9, metadata !"baz", metadata !"baz", metadata !"", i32 6, metadata !14, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, null, i32 0} ; [ DW_TAG_subprogram ]
!14 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!15 = metadata !{null, metadata !16, metadata !12}
!16 = metadata !{i32 720911, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !9} ; [ DW_TAG_pointer_type ]
!19 = metadata !{i32 720909, metadata !82, metadata !5, metadata !"b_ref", i32 12, i64 64, i64 64, i64 64, i32 0, metadata !20} ; [ DW_TAG_member ]
!20 = metadata !{i32 720912, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !9} ; [ DW_TAG_reference_type ]
!21 = metadata !{i32 720942, metadata !82, metadata !5, metadata !"bar", metadata !"bar", metadata !"", i32 13, metadata !22, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, null, i32 0} ; [ DW_TAG_subprogram ]
!22 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!23 = metadata !{null, metadata !24, metadata !12}
!24 = metadata !{i32 720911, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !5} ; [ DW_TAG_pointer_type ]
!27 = metadata !{metadata !29, metadata !37, metadata !40, metadata !43, metadata !46}
!29 = metadata !{i32 720942, metadata !82, metadata !6, metadata !"main", metadata !"main", metadata !"", i32 17, metadata !30, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32, i8**)* @main, null, null, null, i32 0} ; [ DW_TAG_subprogram ] [line 17] [def] [scope 0] [main]
!30 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !31, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!31 = metadata !{metadata !12, metadata !12, metadata !32}
!32 = metadata !{i32 720911, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !33} ; [ DW_TAG_pointer_type ]
!33 = metadata !{i32 720911, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !34} ; [ DW_TAG_pointer_type ]
!34 = metadata !{i32 720932, null, null, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ]
!35 = metadata !{metadata !36}
!36 = metadata !{i32 720932} ; [ DW_TAG_base_type ]
!37 = metadata !{i32 720942, metadata !82, null, metadata !"bar", metadata !"bar", metadata !"_ZN3barC1Ei", i32 13, metadata !22, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.bar*, i32)* @_ZN3barC1Ei, null, metadata !21, null, i32 0} ; [ DW_TAG_subprogram ] [line 13] [def] [scope 0] [bar]
!38 = metadata !{metadata !39}
!39 = metadata !{i32 720932} ; [ DW_TAG_base_type ]
!40 = metadata !{i32 720942, metadata !82, null, metadata !"bar", metadata !"bar", metadata !"_ZN3barC2Ei", i32 13, metadata !22, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.bar*, i32)* @_ZN3barC2Ei, null, metadata !21, null, i32 0} ; [ DW_TAG_subprogram ] [line 13] [def] [scope 0] [bar]
!41 = metadata !{metadata !42}
!42 = metadata !{i32 720932} ; [ DW_TAG_base_type ]
!43 = metadata !{i32 720942, metadata !82, null, metadata !"baz", metadata !"baz", metadata !"_ZN3bazC1Ei", i32 6, metadata !14, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.baz*, i32)* @_ZN3bazC1Ei, null, metadata !13, null, i32 0} ; [ DW_TAG_subprogram ] [line 6] [def] [scope 0] [baz]
!44 = metadata !{metadata !45}
!45 = metadata !{i32 720932} ; [ DW_TAG_base_type ]
!46 = metadata !{i32 720942, metadata !82, null, metadata !"baz", metadata !"baz", metadata !"_ZN3bazC2Ei", i32 6, metadata !14, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.baz*, i32)* @_ZN3bazC2Ei, null, metadata !13, null, i32 0} ; [ DW_TAG_subprogram ] [line 6] [def] [scope 0] [baz]
!49 = metadata !{i32 721153, metadata !29, metadata !"argc", metadata !6, i32 16777232, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!50 = metadata !{i32 16, i32 14, metadata !29, null}
!51 = metadata !{i32 721153, metadata !29, metadata !"argv", metadata !6, i32 33554448, metadata !32, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!52 = metadata !{i32 16, i32 27, metadata !29, null}
!53 = metadata !{i32 721152, metadata !54, metadata !"myBar", metadata !6, i32 18, metadata !5, i32 0, i32 0} ; [ DW_TAG_auto_variable ]
!54 = metadata !{i32 720907, metadata !82, metadata !29, i32 17, i32 1, i32 0} ; [ DW_TAG_lexical_block ]
!55 = metadata !{i32 18, i32 9, metadata !54, null}
!56 = metadata !{i32 18, i32 17, metadata !54, null}
!57 = metadata !{i32 19, i32 5, metadata !54, null}
!58 = metadata !{i32 721153, metadata !37, metadata !"this", metadata !6, i32 16777229, metadata !24, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
!59 = metadata !{i32 13, i32 5, metadata !37, null}
!60 = metadata !{i32 721153, metadata !37, metadata !"x", metadata !6, i32 33554445, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!61 = metadata !{i32 13, i32 13, metadata !37, null}
!62 = metadata !{i32 13, i32 34, metadata !37, null}
!63 = metadata !{i32 721153, metadata !40, metadata !"this", metadata !6, i32 16777229, metadata !24, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
!64 = metadata !{i32 13, i32 5, metadata !40, null}
!65 = metadata !{i32 721153, metadata !40, metadata !"x", metadata !6, i32 33554445, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!66 = metadata !{i32 13, i32 13, metadata !40, null}
!67 = metadata !{i32 13, i32 33, metadata !40, null}
!68 = metadata !{i32 13, i32 34, metadata !69, null}
!69 = metadata !{i32 720907, metadata !82, metadata !40, i32 13, i32 33, i32 1} ; [ DW_TAG_lexical_block ]
!70 = metadata !{i32 721153, metadata !43, metadata !"this", metadata !6, i32 16777222, metadata !16, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
!71 = metadata !{i32 6, i32 5, metadata !43, null}
!72 = metadata !{i32 721153, metadata !43, metadata !"a", metadata !6, i32 33554438, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!73 = metadata !{i32 6, i32 13, metadata !43, null}
!74 = metadata !{i32 6, i32 24, metadata !43, null}
!75 = metadata !{i32 721153, metadata !46, metadata !"this", metadata !6, i32 16777222, metadata !16, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
!76 = metadata !{i32 6, i32 5, metadata !46, null}
!77 = metadata !{i32 721153, metadata !46, metadata !"a", metadata !6, i32 33554438, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!78 = metadata !{i32 6, i32 13, metadata !46, null}
!79 = metadata !{i32 6, i32 23, metadata !46, null}
!80 = metadata !{i32 6, i32 24, metadata !81, null}
!81 = metadata !{i32 720907, metadata !82, metadata !46, i32 6, i32 23, i32 2} ; [ DW_TAG_lexical_block ]
!82 = metadata !{metadata !"main.cpp", metadata !"/Users/echristo/tmp/bad-struct-ref"}
!83 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}