shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 6 Packages Projects Releases Wiki Activity
llvm-project/llvm/test/DebugInfo/NVPTX/debug-addr-class.ll
Vedant Kumar 77ffce6954 [Instruction] Set metadata uses to undef on deletion 
Summary:
Replace any extant metadata uses of a dying instruction with undef to
preserve debug info accuracy. Some alternatives include:

- Treat Instruction like any other Value, and point its extant metadata
  uses to an empty ValueAsMetadata node. This makes extant dbg.value uses
  trivially dead (i.e. fair game for deletion in many passes), leading to
  stale dbg.values being in effect for too long.

- Call salvageDebugInfoOrMarkUndef. Not needed to make instruction removal
  correct. OTOH results in wasted work in some common cases (e.g. when all
  instructions in a BasicBlock are deleted).

This came up while discussing some basic cases in
https://reviews.llvm.org/D80052.

Reviewers: jmorse, TWeaver, aprantl, dexonsmith, jdoerfert

Subscribers: jholewinski, qcolombet, hiraditya, jfb, sstefan1, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D80264
2020-05-21 15:58:12 -07:00

357 lines
18 KiB
LLVM
Raw Blame History

; RUN: llc -mtriple=nvptx64-nvidia-cuda < %s | FileCheck %s
@GLOBAL = addrspace(1) externally_initialized global i32 0, align 4, !dbg !0
@SHARED = addrspace(3) externally_initialized global i32 undef, align 4, !dbg !6
define void @test(float, float*, float*, i32) !dbg !17 {
%5 = alloca float, align 4
%6 = alloca float*, align 8
%7 = alloca float*, align 8
%8 = alloca i32, align 4
store float %0, float* %5, align 4
call void @llvm.dbg.declare(metadata float* %5, metadata !22, metadata !DIExpression()), !dbg !23
store float* %1, float** %6, align 8
call void @llvm.dbg.declare(metadata float** %6, metadata !24, metadata !DIExpression()), !dbg !25
store float* %2, float** %7, align 8
call void @llvm.dbg.declare(metadata float** %7, metadata !26, metadata !DIExpression()), !dbg !27
store i32 %3, i32* %8, align 4
call void @llvm.dbg.declare(metadata i32* %8, metadata !28, metadata !DIExpression()), !dbg !29
%9 = load float, float* %5, align 4, !dbg !30
%10 = load float*, float** %6, align 8, !dbg !31
%11 = load i32, i32* %8, align 4, !dbg !32
%12 = sext i32 %11 to i64, !dbg !31
%13 = getelementptr inbounds float, float* %10, i64 %12, !dbg !31
%14 = load float, float* %13, align 4, !dbg !31
%15 = fmul contract float %9, %14, !dbg !33
%16 = load float*, float** %7, align 8, !dbg !34
%17 = load i32, i32* %8, align 4, !dbg !35
%18 = sext i32 %17 to i64, !dbg !34
%19 = getelementptr inbounds float, float* %16, i64 %18, !dbg !34
store float %15, float* %19, align 4, !dbg !36
store i32 0, i32* addrspacecast (i32 addrspace(1)* @GLOBAL to i32*), align 4, !dbg !37
store i32 0, i32* addrspacecast (i32 addrspace(3)* @SHARED to i32*), align 4, !dbg !38
ret void, !dbg !39
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata)
!llvm.dbg.cu = !{!2}
!nvvm.annotations = !{!10}
!llvm.module.flags = !{!11, !12, !13, !14, !15}
!llvm.ident = !{!16}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "GLOBAL", scope: !2, file: !8, line: 3, type: !9, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 9.0.0 (trunk 351969) (llvm/trunk 351973)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
!3 = !DIFile(filename: "new.cc", directory: "/tmp")
!4 = !{}
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression(DW_OP_constu, 8, DW_OP_swap, DW_OP_xderef))
!7 = distinct !DIGlobalVariable(name: "SHARED", scope: !2, file: !8, line: 4, type: !9, isLocal: false, isDefinition: true)
!8 = !DIFile(filename: "test.cu", directory: "/tmp")
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !{void (float, float*, float*, i32)* @test, !"kernel", i32 1}
!11 = !{i32 2, !"Dwarf Version", i32 2}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{i32 1, !"wchar_size", i32 4}
!14 = !{i32 4, !"nvvm-reflect-ftz", i32 0}
!15 = !{i32 7, !"PIC Level", i32 2}
!16 = !{!"clang version 9.0.0 (trunk 351969) (llvm/trunk 351973)"}
!17 = distinct !DISubprogram(name: "test", linkageName: "test", scope: !8, file: !8, line: 6, type: !18, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)
!18 = !DISubroutineType(types: !19)
!19 = !{null, !20, !21, !21, !9}
!20 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
!22 = !DILocalVariable(name: "a", arg: 1, scope: !17, file: !8, line: 6, type: !20)
!23 = !DILocation(line: 6, column: 41, scope: !17)
!24 = !DILocalVariable(name: "x", arg: 2, scope: !17, file: !8, line: 6, type: !21)
!25 = !DILocation(line: 6, column: 51, scope: !17)
!26 = !DILocalVariable(name: "y", arg: 3, scope: !17, file: !8, line: 6, type: !21)
!27 = !DILocation(line: 6, column: 61, scope: !17)
!28 = !DILocalVariable(name: "i", arg: 4, scope: !17, file: !8, line: 6, type: !9)
!29 = !DILocation(line: 6, column: 68, scope: !17)
!30 = !DILocation(line: 7, column: 10, scope: !17)
!31 = !DILocation(line: 7, column: 14, scope: !17)
!32 = !DILocation(line: 7, column: 16, scope: !17)
!33 = !DILocation(line: 7, column: 12, scope: !17)
!34 = !DILocation(line: 7, column: 3, scope: !17)
!35 = !DILocation(line: 7, column: 5, scope: !17)
!36 = !DILocation(line: 7, column: 8, scope: !17)
!37 = !DILocation(line: 8, column: 10, scope: !17)
!38 = !DILocation(line: 9, column: 10, scope: !17)
!39 = !DILocation(line: 10, column: 1, scope: !17)
; CHECK: .section .debug_abbrev
; CHECK-NEXT: {
; CHECK-NEXT:.b8 1 // Abbreviation Code
; CHECK-NEXT:.b8 17 // DW_TAG_compile_unit
; CHECK-NEXT:.b8 1 // DW_CHILDREN_yes
; CHECK-NEXT:.b8 37 // DW_AT_producer
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 19 // DW_AT_language
; CHECK-NEXT:.b8 5 // DW_FORM_data2
; CHECK-NEXT:.b8 3 // DW_AT_name
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 16 // DW_AT_stmt_list
; CHECK-NEXT:.b8 6 // DW_FORM_data4
; CHECK-NEXT:.b8 27 // DW_AT_comp_dir
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 17 // DW_AT_low_pc
; CHECK-NEXT:.b8 1 // DW_FORM_addr
; CHECK-NEXT:.b8 18 // DW_AT_high_pc
; CHECK-NEXT:.b8 1 // DW_FORM_addr
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 2 // Abbreviation Code
; CHECK-NEXT:.b8 52 // DW_TAG_variable
; CHECK-NEXT:.b8 0 // DW_CHILDREN_no
; CHECK-NEXT:.b8 3 // DW_AT_name
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 73 // DW_AT_type
; CHECK-NEXT:.b8 19 // DW_FORM_ref4
; CHECK-NEXT:.b8 63 // DW_AT_external
; CHECK-NEXT:.b8 12 // DW_FORM_flag
; CHECK-NEXT:.b8 58 // DW_AT_decl_file
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 59 // DW_AT_decl_line
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 51 // DW_AT_address_class
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 2 // DW_AT_location
; CHECK-NEXT:.b8 10 // DW_FORM_block1
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 3 // Abbreviation Code
; CHECK-NEXT:.b8 36 // DW_TAG_base_type
; CHECK-NEXT:.b8 0 // DW_CHILDREN_no
; CHECK-NEXT:.b8 3 // DW_AT_name
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 62 // DW_AT_encoding
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 11 // DW_AT_byte_size
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 4 // Abbreviation Code
; CHECK-NEXT:.b8 46 // DW_TAG_subprogram
; CHECK-NEXT:.b8 1 // DW_CHILDREN_yes
; CHECK-NEXT:.b8 17 // DW_AT_low_pc
; CHECK-NEXT:.b8 1 // DW_FORM_addr
; CHECK-NEXT:.b8 18 // DW_AT_high_pc
; CHECK-NEXT:.b8 1 // DW_FORM_addr
; CHECK-NEXT:.b8 64 // DW_AT_frame_base
; CHECK-NEXT:.b8 10 // DW_FORM_block1
; CHECK-NEXT:.b8 135 // DW_AT_MIPS_linkage_name
; CHECK-NEXT:.b8 64
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 3 // DW_AT_name
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 58 // DW_AT_decl_file
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 59 // DW_AT_decl_line
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 63 // DW_AT_external
; CHECK-NEXT:.b8 12 // DW_FORM_flag
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 5 // Abbreviation Code
; CHECK-NEXT:.b8 5 // DW_TAG_formal_parameter
; CHECK-NEXT:.b8 0 // DW_CHILDREN_no
; CHECK-NEXT:.b8 3 // DW_AT_name
; CHECK-NEXT:.b8 8 // DW_FORM_string
; CHECK-NEXT:.b8 58 // DW_AT_decl_file
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 59 // DW_AT_decl_line
; CHECK-NEXT:.b8 11 // DW_FORM_data1
; CHECK-NEXT:.b8 73 // DW_AT_type
; CHECK-NEXT:.b8 19 // DW_FORM_ref4
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 6 // Abbreviation Code
; CHECK-NEXT:.b8 15 // DW_TAG_pointer_type
; CHECK-NEXT:.b8 0 // DW_CHILDREN_no
; CHECK-NEXT:.b8 73 // DW_AT_type
; CHECK-NEXT:.b8 19 // DW_FORM_ref4
; CHECK-NEXT:.b8 0 // EOM(1)
; CHECK-NEXT:.b8 0 // EOM(2)
; CHECK-NEXT:.b8 0 // EOM(3)
; CHECK-NEXT: }
; CHECK-NEXT: .section .debug_info
; CHECK-NEXT: {
; CHECK-NEXT:.b32 240 // Length of Unit
; CHECK-NEXT:.b8 2 // DWARF version number
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b32 .debug_abbrev // Offset Into Abbrev. Section
; CHECK-NEXT:.b8 8 // Address Size (in bytes)
; CHECK-NEXT:.b8 1 // Abbrev [1] 0xb:0xe9 DW_TAG_compile_unit
; CHECK-NEXT:.b8 99 // DW_AT_producer
; CHECK-NEXT:.b8 108
; CHECK-NEXT:.b8 97
; CHECK-NEXT:.b8 110
; CHECK-NEXT:.b8 103
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 118
; CHECK-NEXT:.b8 101
; CHECK-NEXT:.b8 114
; CHECK-NEXT:.b8 115
; CHECK-NEXT:.b8 105
; CHECK-NEXT:.b8 111
; CHECK-NEXT:.b8 110
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 57
; CHECK-NEXT:.b8 46
; CHECK-NEXT:.b8 48
; CHECK-NEXT:.b8 46
; CHECK-NEXT:.b8 48
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 40
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 114
; CHECK-NEXT:.b8 117
; CHECK-NEXT:.b8 110
; CHECK-NEXT:.b8 107
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 51
; CHECK-NEXT:.b8 53
; CHECK-NEXT:.b8 49
; CHECK-NEXT:.b8 57
; CHECK-NEXT:.b8 54
; CHECK-NEXT:.b8 57
; CHECK-NEXT:.b8 41
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 40
; CHECK-NEXT:.b8 108
; CHECK-NEXT:.b8 108
; CHECK-NEXT:.b8 118
; CHECK-NEXT:.b8 109
; CHECK-NEXT:.b8 47
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 114
; CHECK-NEXT:.b8 117
; CHECK-NEXT:.b8 110
; CHECK-NEXT:.b8 107
; CHECK-NEXT:.b8 32
; CHECK-NEXT:.b8 51
; CHECK-NEXT:.b8 53
; CHECK-NEXT:.b8 49
; CHECK-NEXT:.b8 57
; CHECK-NEXT:.b8 55
; CHECK-NEXT:.b8 51
; CHECK-NEXT:.b8 41
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 4 // DW_AT_language
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 110 // DW_AT_name
; CHECK-NEXT:.b8 101
; CHECK-NEXT:.b8 119
; CHECK-NEXT:.b8 46
; CHECK-NEXT:.b8 99
; CHECK-NEXT:.b8 99
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b32 .debug_line // DW_AT_stmt_list
; CHECK-NEXT:.b8 47 // DW_AT_comp_dir
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 109
; CHECK-NEXT:.b8 112
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b64 Lfunc_begin0 // DW_AT_low_pc
; CHECK-NEXT:.b64 Lfunc_end0 // DW_AT_high_pc
; CHECK-NEXT:.b8 2 // Abbrev [2] 0x65:0x1a DW_TAG_variable
; CHECK-NEXT:.b8 71 // DW_AT_name
; CHECK-NEXT:.b8 76
; CHECK-NEXT:.b8 79
; CHECK-NEXT:.b8 66
; CHECK-NEXT:.b8 65
; CHECK-NEXT:.b8 76
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b32 127 // DW_AT_type
; CHECK-NEXT:.b8 1 // DW_AT_external
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 3 // DW_AT_decl_line
; CHECK-NEXT:.b8 5 // DW_AT_address_class
; CHECK-NEXT:.b8 9 // DW_AT_location
; CHECK-NEXT:.b8 3
; CHECK-NEXT:.b64 GLOBAL
; CHECK-NEXT:.b8 3 // Abbrev [3] 0x7f:0x7 DW_TAG_base_type
; CHECK-NEXT:.b8 105 // DW_AT_name
; CHECK-NEXT:.b8 110
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 5 // DW_AT_encoding
; CHECK-NEXT:.b8 4 // DW_AT_byte_size
; CHECK-NEXT:.b8 2 // Abbrev [2] 0x86:0x1a DW_TAG_variable
; CHECK-NEXT:.b8 83 // DW_AT_name
; CHECK-NEXT:.b8 72
; CHECK-NEXT:.b8 65
; CHECK-NEXT:.b8 82
; CHECK-NEXT:.b8 69
; CHECK-NEXT:.b8 68
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b32 127 // DW_AT_type
; CHECK-NEXT:.b8 1 // DW_AT_external
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 4 // DW_AT_decl_line
; CHECK-NEXT:.b8 8 // DW_AT_address_class
; CHECK-NEXT:.b8 9 // DW_AT_location
; CHECK-NEXT:.b8 3
; CHECK-NEXT:.b64 SHARED
; CHECK-NEXT:.b8 4 // Abbrev [4] 0xa0:0x45 DW_TAG_subprogram
; CHECK-NEXT:.b64 Lfunc_begin0 // DW_AT_low_pc
; CHECK-NEXT:.b64 Lfunc_end0 // DW_AT_high_pc
; CHECK-NEXT:.b8 1 // DW_AT_frame_base
; CHECK-NEXT:.b8 156
; CHECK-NEXT:.b8 116 // DW_AT_MIPS_linkage_name
; CHECK-NEXT:.b8 101
; CHECK-NEXT:.b8 115
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 116 // DW_AT_name
; CHECK-NEXT:.b8 101
; CHECK-NEXT:.b8 115
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 6 // DW_AT_decl_line
; CHECK-NEXT:.b8 1 // DW_AT_external
; CHECK-NEXT:.b8 5 // Abbrev [5] 0xc0:0x9 DW_TAG_formal_parameter
; CHECK-NEXT:.b8 97 // DW_AT_name
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 6 // DW_AT_decl_line
; CHECK-NEXT:.b32 234 // DW_AT_type
; CHECK-NEXT:.b8 5 // Abbrev [5] 0xc9:0x9 DW_TAG_formal_parameter
; CHECK-NEXT:.b8 120 // DW_AT_name
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 6 // DW_AT_decl_line
; CHECK-NEXT:.b32 229 // DW_AT_type
; CHECK-NEXT:.b8 5 // Abbrev [5] 0xd2:0x9 DW_TAG_formal_parameter
; CHECK-NEXT:.b8 121 // DW_AT_name
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 6 // DW_AT_decl_line
; CHECK-NEXT:.b32 229 // DW_AT_type
; CHECK-NEXT:.b8 5 // Abbrev [5] 0xdb:0x9 DW_TAG_formal_parameter
; CHECK-NEXT:.b8 105 // DW_AT_name
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 1 // DW_AT_decl_file
; CHECK-NEXT:.b8 6 // DW_AT_decl_line
; CHECK-NEXT:.b32 127 // DW_AT_type
; CHECK-NEXT:.b8 0 // End Of Children Mark
; CHECK-NEXT:.b8 6 // Abbrev [6] 0xe5:0x5 DW_TAG_pointer_type
; CHECK-NEXT:.b32 234 // DW_AT_type
; CHECK-NEXT:.b8 3 // Abbrev [3] 0xea:0x9 DW_TAG_base_type
; CHECK-NEXT:.b8 102 // DW_AT_name
; CHECK-NEXT:.b8 108
; CHECK-NEXT:.b8 111
; CHECK-NEXT:.b8 97
; CHECK-NEXT:.b8 116
; CHECK-NEXT:.b8 0
; CHECK-NEXT:.b8 4 // DW_AT_encoding
; CHECK-NEXT:.b8 4 // DW_AT_byte_size
; CHECK-NEXT:.b8 0 // End Of Children Mark
; CHECK-NEXT: }
; CHECK-NEXT: .section .debug_loc { }
; CHECK-NOT: debug_
Reference in New Issue View Git Blame Copy Permalink