2c864551df
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
81 lines
3.8 KiB
LLVM
81 lines
3.8 KiB
LLVM
; RUN: llc -O0 -mtriple=amdgcn--amdhsa-amdgiz -mcpu=fiji -mattr=+amdgpu-debugger-insert-nops -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK
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; RUN: llc -O0 -mtriple=amdgcn--amdhsa-amdgiz -mcpu=fiji -mattr=+amdgpu-debugger-insert-nops -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECKNOP
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target datalayout = "A5"
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; This test expects that we have one instance for each line in some order with "s_nop 0" instances after each.
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; Check that each line appears at least once
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; CHECK-DAG: test01.cl:2:3
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; CHECK-DAG: test01.cl:3:3
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; CHECK-DAG: test01.cl:4:3
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; Check that each of each of the lines consists of the line output, followed by "s_nop 0"
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; CHECKNOP: test01.cl:{{[234]}}:3
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; CHECKNOP-NEXT: s_nop 0
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; CHECKNOP: test01.cl:{{[234]}}:3
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; CHECKNOP-NEXT: s_nop 0
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; CHECKNOP: test01.cl:{{[234]}}:3
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; CHECKNOP-NEXT: s_nop 0
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; CHECK: test01.cl:5:{{[0-9]+}}
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; CHECK-NEXT: s_nop 0
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; CHECK-NEXT: s_endpgm
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; Function Attrs: nounwind
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define amdgpu_kernel void @test(i32 addrspace(1)* %A) #0 !dbg !12 {
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entry:
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%A.addr = alloca i32 addrspace(1)*, align 4, addrspace(5)
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store i32 addrspace(1)* %A, i32 addrspace(1)* addrspace(5)* %A.addr, align 4
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call void @llvm.dbg.declare(metadata i32 addrspace(1)* addrspace(5)* %A.addr, metadata !17, metadata !18), !dbg !19
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%0 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(5)* %A.addr, align 4, !dbg !20
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%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %0, i32 0, !dbg !20
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store i32 1, i32 addrspace(1)* %arrayidx, align 4, !dbg !20
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%1 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(5)* %A.addr, align 4, !dbg !22
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %1, i32 1, !dbg !22
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store i32 2, i32 addrspace(1)* %arrayidx1, align 4, !dbg !23
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%2 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(5)* %A.addr, align 4, !dbg !24
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%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %2, i32 2, !dbg !24
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store i32 3, i32 addrspace(1)* %arrayidx2, align 4, !dbg !25
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ret void, !dbg !26
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!opencl.kernels = !{!3}
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!llvm.module.flags = !{!9, !10}
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!llvm.ident = !{!11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 268929)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "test01.cl", directory: "/home/kzhuravl/Lightning/testing")
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!2 = !{}
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!3 = !{void (i32 addrspace(1)*)* @test, !4, !5, !6, !7, !8}
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!4 = !{!"kernel_arg_addr_space", i32 1}
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!5 = !{!"kernel_arg_access_qual", !"none"}
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!6 = !{!"kernel_arg_type", !"int addrspace(5)*"}
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!7 = !{!"kernel_arg_base_type", !"int addrspace(5)*"}
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!8 = !{!"kernel_arg_type_qual", !""}
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!9 = !{i32 2, !"Dwarf Version", i32 2}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{!"clang version 3.9.0 (trunk 268929)"}
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!12 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 1, type: !13, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null, !15}
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!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, align: 32)
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!16 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!17 = !DILocalVariable(name: "A", arg: 1, scope: !12, file: !1, line: 1, type: !15)
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!18 = !DIExpression()
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!19 = !DILocation(line: 1, column: 30, scope: !12)
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!20 = !DILocation(line: 2, column: 3, scope: !12)
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!21 = !DILocation(line: 2, column: 8, scope: !12)
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!22 = !DILocation(line: 3, column: 3, scope: !12)
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!23 = !DILocation(line: 3, column: 8, scope: !12)
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!24 = !DILocation(line: 4, column: 3, scope: !12)
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!25 = !DILocation(line: 4, column: 8, scope: !12)
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!26 = !DILocation(line: 5, column: 1, scope: !12)
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