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llvm-6502/test/DebugInfo/X86/reference-argument.ll
Adrian Prantl e240cc0b4b Remove support for DIVariable's FlagIndirectVariable and expect 
frontends to use a DIExpression with a DW_OP_deref instead.

This is not only a much more natural place for this informationl; there
is also a technical reason: The FlagIndirectVariable is used to mark a
variable that is turned into a reference by virtue of the calling
convention; this happens for example to aggregate return values.
The inliner, for example, may actually need to undo this indirection to
correctly represent the value in its new context. This is impossible to
implement because the DIVariable can't be safely modified. We can however
safely construct a new DIExpression on the fly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226476 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-19 17:57:29 +00:00

104 lines
7.8 KiB
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; RUN: llc -O0 -mtriple=x86_64-apple-darwin -filetype=asm %s -o - | FileCheck %s
; ModuleID = 'aggregate-indirect-arg.cpp'
; extracted from debuginfo-tests/aggregate-indirect-arg.cpp
; v should not be a pointer.
; CHECK: ##DEBUG_VALUE: foo:v <- RSI
; rdar://problem/13658587
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-S128"
target triple = "x86_64-apple-macosx10.9.0"
%class.SVal = type { i8*, i32 }
%class.A = type { i8 }
declare void @_Z3barR4SVal(%class.SVal* %v)
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare i32 @main()
; Function Attrs: nounwind ssp uwtable
define linkonce_odr void @_ZN1A3fooE4SVal(%class.A* %this, %class.SVal* %v) nounwind ssp uwtable 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 !59, metadata !{!"0x102"}), !dbg !61
call void @llvm.dbg.declare(metadata %class.SVal* %v, metadata !62, metadata !{!"0x102\006"}), !dbg !61
%this1 = load %class.A** %this.addr
call void @_Z3barR4SVal(%class.SVal* %v), !dbg !61
ret void, !dbg !61
}
declare void @_ZN4SValD1Ev(%class.SVal* %this)
declare void @_ZN4SValD2Ev(%class.SVal* %this)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!47, !68}
!0 = !{!"0x11\004\00clang version 3.4 \000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [aggregate-indirect-arg.cpp] [DW_LANG_C_plus_plus]
!1 = !{!"aggregate-indirect-arg.cpp", !""}
!2 = !{}
!3 = !{!4, !29, !33, !34, !35}
!4 = !{!"0x2e\00bar\00bar\00_Z3barR4SVal\0019\000\001\000\006\00256\000\0019", !1, !5, !6, null, void (%class.SVal*)* @_Z3barR4SVal, null, null, !2} ; [ DW_TAG_subprogram ] [line 19] [def] [bar]
!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [aggregate-indirect-arg.cpp]
!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = !{null, !8}
!8 = !{!"0x10\00\000\000\000\000\000", null, null, !9} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from SVal]
!9 = !{!"0x2\00SVal\0012\00128\0064\000\000\000", !1, null, null, !10, null, null, null} ; [ DW_TAG_class_type ] [SVal] [line 12, size 128, align 64, offset 0] [def] [from ]
!10 = !{!11, !14, !16, !21, !23}
!11 = !{!"0xd\00Data\0015\0064\0064\000\000", !1, !9, !12} ; [ DW_TAG_member ] [Data] [line 15, size 64, align 64, offset 0] [from ]
!12 = !{!"0xf\00\000\0064\0064\000\000", null, null, !13} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
!13 = !{!"0x26\00\000\000\000\000\000", null, null, null} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from ]
!14 = !{!"0xd\00Kind\0016\0032\0032\0064\000", !1, !9, !15} ; [ DW_TAG_member ] [Kind] [line 16, size 32, align 32, offset 64] [from unsigned int]
!15 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", null, null} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
!16 = !{!"0x2e\00~SVal\00~SVal\00\0014\000\000\000\006\00256\000\0014", !1, !9, !17, null, null, null, i32 0, !20} ; [ DW_TAG_subprogram ] [line 14] [~SVal]
!17 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !18, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!18 = !{null, !19}
!19 = !{!"0xf\00\000\0064\0064\000\001088", i32 0, null, !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from SVal]
!20 = !{i32 786468}
!21 = !{!"0x2e\00SVal\00SVal\00\0012\000\000\000\006\00320\000\0012", !1, !9, !17, null, null, null, i32 0, !22} ; [ DW_TAG_subprogram ] [line 12] [SVal]
!22 = !{i32 786468}
!23 = !{!"0x2e\00SVal\00SVal\00\0012\000\000\000\006\00320\000\0012", !1, !9, !24, null, null, null, i32 0, !28} ; [ DW_TAG_subprogram ] [line 12] [SVal]
!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 ]
!25 = !{null, !19, !26}
!26 = !{!"0x10\00\000\000\000\000\000", null, null, !27} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from ]
!27 = !{!"0x26\00\000\000\000\000\000", null, null, !9} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from SVal]
!28 = !{i32 786468}
!29 = !{!"0x2e\00main\00main\00\0025\000\001\000\006\00256\000\0025", !1, !5, !30, null, i32 ()* @main, null, null, !2} ; [ DW_TAG_subprogram ] [line 25] [def] [main]
!30 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !31, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!31 = !{!32}
!32 = !{!"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]
!33 = !{!"0x2e\00~SVal\00~SVal\00_ZN4SValD1Ev\0014\000\001\000\006\00256\000\0014", !1, null, !17, null, void (%class.SVal*)* @_ZN4SValD1Ev, null, !16, !2} ; [ DW_TAG_subprogram ] [line 14] [def] [~SVal]
!34 = !{!"0x2e\00~SVal\00~SVal\00_ZN4SValD2Ev\0014\000\001\000\006\00256\000\0014", !1, null, !17, null, void (%class.SVal*)* @_ZN4SValD2Ev, null, !16, !2} ; [ DW_TAG_subprogram ] [line 14] [def] [~SVal]
!35 = !{!"0x2e\00foo\00foo\00_ZN1A3fooE4SVal\0022\000\001\000\006\00256\000\0022", !1, null, !36, null, void (%class.A*, %class.SVal*)* @_ZN1A3fooE4SVal, null, !41, !2} ; [ DW_TAG_subprogram ] [line 22] [def] [foo]
!36 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !37, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!37 = !{null, !38, !9}
!38 = !{!"0xf\00\000\0064\0064\000\001088", i32 0, null, !39} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from A]
!39 = !{!"0x2\00A\0020\008\008\000\000\000", !1, null, null, !40, null, null, null} ; [ DW_TAG_class_type ] [A] [line 20, size 8, align 8, offset 0] [def] [from ]
!40 = !{!41, !43}
!41 = !{!"0x2e\00foo\00foo\00_ZN1A3fooE4SVal\0022\000\000\000\006\00256\000\0022", !1, !39, !36, null, null, null, i32 0, !42} ; [ DW_TAG_subprogram ] [line 22] [foo]
!42 = !{i32 786468}
!43 = !{!"0x2e\00A\00A\00\0020\000\000\000\006\00320\000\0020", !1, !39, !44, null, null, null, i32 0, !46} ; [ DW_TAG_subprogram ] [line 20] [A]
!44 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !45, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!45 = !{null, !38}
!46 = !{i32 786468}
!47 = !{i32 2, !"Dwarf Version", i32 3}
!48 = !{!"0x101\00v\0016777235\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [v] [line 19]
!49 = !MDLocation(line: 19, scope: !4)
!50 = !{!"0x100\00v\0026\000", !29, !5, !9} ; [ DW_TAG_auto_variable ] [v] [line 26]
!51 = !MDLocation(line: 26, scope: !29)
!52 = !MDLocation(line: 27, scope: !29)
!53 = !MDLocation(line: 28, scope: !29)
!54 = !{!"0x100\00a\0029\000", !29, !5, !39} ; [ DW_TAG_auto_variable ] [a] [line 29]
!55 = !MDLocation(line: 29, scope: !29)
!56 = !MDLocation(line: 30, scope: !29)
!57 = !MDLocation(line: 31, scope: !29)
!58 = !MDLocation(line: 32, scope: !29)
!59 = !{!"0x101\00this\0016777238\001088", !35, !5, !60} ; [ DW_TAG_arg_variable ] [this] [line 22]
!60 = !{!"0xf\00\000\0064\0064\000\000", null, null, !39} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
!61 = !MDLocation(line: 22, scope: !35)
!62 = !{!"0x101\00v\0033554454\000", !35, !5, !9} ; [ DW_TAG_arg_variable ] [v] [line 22]
!63 = !{!"0x101\00this\0016777230\001088", !33, !5, !64} ; [ DW_TAG_arg_variable ] [this] [line 14]
!64 = !{!"0xf\00\000\0064\0064\000\000", null, null, !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from SVal]
!65 = !MDLocation(line: 14, scope: !33)
!66 = !{!"0x101\00this\0016777230\001088", !34, !5, !64} ; [ DW_TAG_arg_variable ] [this] [line 14]
!67 = !MDLocation(line: 14, scope: !34)
!68 = !{i32 1, !"Debug Info Version", i32 2}
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