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136 lines
6.2 KiB
136 lines
6.2 KiB
4 months ago
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# RUN: llc -mtriple=x86_64-linux-gnu -start-before greedy -stop-after virtregrewriter -o - -verify-machineinstrs %s | FileCheck %s
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--- |
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; ModuleID = '<stdin>'
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source_filename = "test/DebugInfo/X86/dbg-value-inlined-parameter.ll"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-darwin"
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%struct.S1 = type { float*, i32 }
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@p = common global %struct.S1 zeroinitializer, align 8, !dbg !0
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; Function Attrs: nounwind optsize ssp
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define void @foobar() !dbg !15 {
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entry:
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tail call void @llvm.dbg.value(metadata %struct.S1* @p, metadata !18, metadata !DIExpression()) , !dbg !25
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ret void, !dbg !32
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!14}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 14, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 2.9 (trunk 125693)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4)
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!3 = !DIFile(filename: "nm2.c", directory: "/private/tmp")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "S1", scope: !2, file: !3, line: 4, baseType: !7)
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!7 = !DICompositeType(tag: DW_TAG_structure_type, name: "S1", scope: !2, file: !3, line: 1, size: 128, align: 64, elements: !8)
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!8 = !{!9, !12}
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!9 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !3, file: !3, line: 2, baseType: !10, size: 64, align: 64)
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!10 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !11, size: 64, align: 64)
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!11 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "nums", scope: !3, file: !3, line: 3, baseType: !13, size: 32, align: 32, offset: 64)
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!13 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!14 = !{i32 1, !"Debug Info Version", i32 3}
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!15 = distinct !DISubprogram(name: "foobar", scope: !3, file: !3, line: 15, type: !16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2)
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!16 = !DISubroutineType(types: !17)
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!17 = !{null}
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!18 = !DILocalVariable(name: "sp", arg: 1, scope: !19, file: !3, line: 7, type: !24)
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!19 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 8, type: !20, isLocal: false, isDefinition: true, scopeLine: 8, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !22)
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!20 = !DISubroutineType(types: !21)
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!21 = !{!13}
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!22 = !{!18, !23}
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!23 = !DILocalVariable(name: "nums", arg: 2, scope: !19, file: !3, line: 7, type: !13)
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!24 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !6, size: 64, align: 64)
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!25 = !DILocation(line: 7, column: 13, scope: !19, inlinedAt: !26)
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!26 = !DILocation(line: 16, column: 3, scope: !27)
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!27 = distinct !DILexicalBlock(scope: !15, file: !3, line: 15, column: 15)
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!32 = !DILocation(line: 17, column: 1, scope: !27)
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...
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---
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name: foobar
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tracksRegLiveness: true
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body: |
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bb.0:
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%1:gr64 = IMPLICIT_DEF
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%2:gr64 = IMPLICIT_DEF
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bb.1:
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; This DBG_VALUE will be discarded (use before def of %0).
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DBG_VALUE %0, $noreg, !18, !DIExpression(), debug-location !25
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%0:gr64 = IMPLICIT_DEF
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%0:gr64 = IMPLICIT_DEF
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%0:gr64 = IMPLICIT_DEF
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%0:gr64 = IMPLICIT_DEF
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bb.2:
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; This DBG_VALUE will be discarded (%1 is defined earlier, but it is not live in, so we do not know where %1 is stored).
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DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
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%1:gr64 = IMPLICIT_DEF
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%1:gr64 = IMPLICIT_DEF
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%1:gr64 = IMPLICIT_DEF
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%1:gr64 = IMPLICIT_DEF
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; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev instruction,
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; so the value should be available for as long as the register allocated to %1 is live.
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DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
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bb.3:
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%1:gr64 = IMPLICIT_DEF
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DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25
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; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev non-dbg instruction,
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; so the value should be available for as long as the register allocated to %1 is live.
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DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
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bb.4:
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; All DBG_VALUEs here should survive. %2 is livein as it was defined in bb.0, and it has use/def in the BTS64ri8 instruction.
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DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
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%2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags
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DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25
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DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
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%2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags
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DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
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%2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags
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DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
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bb.5:
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RET 0, debug-location !32
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...
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# CHECK-LABEL: name: foobar
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# CHECK-LABEL: bb.1:
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# CHECK: DBG_VALUE $noreg
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# CHECK-LABEL: bb.2:
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# CHECK: DBG_VALUE $noreg
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# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF
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# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF
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# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF
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# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF
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# CHECK-NEXT: DBG_VALUE $noreg, $noreg, !18, !DIExpression()
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# CHECK-LABEL: bb.3:
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# CHECK: dead renamable $rcx = IMPLICIT_DEF
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# CHECK-NEXT: DBG_VALUE 0, $noreg, !23, !DIExpression()
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# CHECK-NEXT: DBG_VALUE $rcx, $noreg, !18, !DIExpression()
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# CHECK-LABEL: bb.4:
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# CHECK: liveins: $rax
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# CHECK: DBG_VALUE $rax, $noreg, !18, !DIExpression()
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# CHECK-NEXT: renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags
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# CHECK-NEXT: DBG_VALUE 0, $noreg, !23, !DIExpression()
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# CHECK-NEXT: DBG_VALUE $rax, $noreg, !18, !DIExpression()
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# CHECK-NEXT: renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags
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# CHECK-NEXT: DBG_VALUE $rax, $noreg, !18, !DIExpression()
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# CHECK-NEXT: dead renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags
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# CHECK-LABEL: bb.5:
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# CHECK-NEXT: RET 0
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