llvm/test/CodeGen/MIR/X86/instructions-debug-location.mir

# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the machine instruction's
# debug location metadata correctly.

--- |

  define i32 @test(i32 %x) #0 !dbg !4 {
  entry:
    %x.addr = alloca i32, align 4
    store i32 %x, i32* %x.addr, align 4
    call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !12, metadata !DIExpression()), !dbg !13
    %0 = load i32, i32* %x.addr, align 4, !dbg !14
    ret i32 %0, !dbg !14
  }

  define i32 @test_typed_immediates(i32 %x) #0 {
  entry:
    %x.addr = alloca i32, align 4
    store i32 %x, i32* %x.addr, align 4
    call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !12, metadata !DIExpression()), !dbg !13
    %0 = load i32, i32* %x.addr, align 4, !dbg !14
    ret i32 %0, !dbg !14
  }

  define i32 @test_mir_created(i32 %x) #0 !dbg !15 {
  entry:
    %x.addr = alloca i32, align 4
    store i32 %x, i32* %x.addr, align 4
    %0 = load i32, i32* %x.addr, align 4
    %1 = load i32, i32* %x.addr, align 4
    %2 = load i32, i32* %x.addr, align 4
    %3 = load i32, i32* %x.addr, align 4
    ret i32 %0, !dbg !16
  }

  declare void @llvm.dbg.declare(metadata, metadata, metadata) #1

  attributes #0 = { nounwind "frame-pointer"="none" }
  attributes #1 = { nounwind readnone }

  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!9, !10}
  !llvm.ident = !{!11}

  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
  !1 = !DIFile(filename: "test.ll", directory: "")
  !2 = !{}
  !4 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
  !5 = !DIFile(filename: "test.c", directory: "")
  !6 = !DISubroutineType(types: !7)
  !7 = !{!8, !8}
  !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
  !9 = !{i32 2, !"Dwarf Version", i32 4}
  !10 = !{i32 2, !"Debug Info Version", i32 3}
  !11 = !{!"clang version 3.7.0"}
  !12 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !5, line: 4, type: !8)
  !13 = !DILocation(line: 4, scope: !4)
  !14 = !DILocation(line: 8, scope: !4)
  !15 = distinct !DISubprogram(name: "test_mir_created", scope: !5, file: !5, line: 10, type: !6, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
  !16 = !DILocation(line: 20, scope: !15)

...
---
name:            test
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
frameInfo:
  maxAlignment:  4
stack:
  - { id: 0, name: x.addr, size: 4, alignment: 4 }
body: |
  bb.0.entry:
    liveins: $edi
    ; CHECK: DBG_VALUE $noreg, 0, !11, !DIExpression(), debug-location !12
    ; CHECK: DBG_VALUE $noreg, 0, !11, !DIExpression(), debug-location !12
    ; CHECK: $eax = COPY %0, debug-location !13
    ; CHECK: RET64 $eax, debug-location !13
    %0 = COPY $edi
    DBG_VALUE _, 0, !12, !DIExpression(), debug-location !13
    ; Test whether debug-use is still recognized for compatibility with old
    ; files.
    DBG_VALUE debug-use _, 0, !12, !DIExpression(), debug-location !13
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0
    $eax = COPY %0, debug-location !14
    RET64 $eax, debug-location !14
...
---
name:            test_typed_immediates
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
frameInfo:
  maxAlignment:  4
stack:
  - { id: 0, name: x.addr, size: 4, alignment: 4 }
body: |
  bb.0.entry:
    liveins: $edi

    %0 = COPY $edi
  ; CHECK:      DBG_VALUE $noreg, i32 0, !11, !DIExpression()
  ; CHECK-NEXT: DBG_VALUE $noreg, i64 -22, !11, !DIExpression()
  ; CHECK-NEXT: DBG_VALUE $noreg, i128 123492148938512984928424384934328985928, !11, !DIExpression()
    DBG_VALUE _, i32 0, !12, !DIExpression(), debug-location !13
    DBG_VALUE _, i64 -22, !12, !DIExpression(), debug-location !13
    DBG_VALUE _, i128 123492148938512984928424384934328985928, !12, !DIExpression(), debug-location !13
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0
    $eax = COPY %0
    RET64 $eax
...
---
name:            test_mir_created
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
frameInfo:
  maxAlignment:  4
stack:
  - { id: 0, name: x.addr, size: 4, alignment: 4 }
body: |
  bb.0.entry:
    liveins: $edi

    %0 = COPY $edi
  ; CHECK-LABEL: name: test_mir_created
  ; CHECK:       MOV32mr %stack.0.x.addr, 1, $noreg, 0, $noreg, %0, debug-location !DILocation(line: 1, scope: !14)
  ; CHECK:       MOV32mr %stack.0.x.addr, 1, $noreg, 0, $noreg, %0, debug-location !DILocation(line: 2, column: 2, scope: !14)
  ; CHECK:       MOV32mr %stack.0.x.addr, 1, $noreg, 0, $noreg, %0, debug-location !DILocation(line: 3, column: 2, scope: !14, isImplicitCode: true)
  ; CHECK:       MOV32mr %stack.0.x.addr, 1, $noreg, 0, $noreg, %0, debug-location !DILocation(line: 4, scope: !14, inlinedAt: !15)
  ; CHECK:       MOV32mr %stack.0.x.addr, 1, $noreg, 0, $noreg, %0, debug-location !DILocation(line: 5, scope: !14, inlinedAt: !DILocation(line: 4, scope: !14))
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 1, scope: !15)
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 2, column: 2, scope: !15)
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 3, column: 2, scope: !15, isImplicitCode: true)
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 4, scope: !15, inlinedAt: !16)
    MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 5, scope: !15, inlinedAt: !DILocation(line: 4, scope: !15))
    $eax = COPY %0
    RET64 $eax
...