1# RUN: llc -mtriple=x86_64-linux-gnu -start-before greedy -stop-after virtregrewriter -o - %s | FileCheck %s 2 3--- | 4 ; ModuleID = '<stdin>' 5 source_filename = "test/DebugInfo/X86/dbg-value-inlined-parameter.ll" 6 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 7 target triple = "x86_64-apple-darwin" 8 9 %struct.S1 = type { float*, i32 } 10 11 @p = common global %struct.S1 zeroinitializer, align 8, !dbg !0 12 13 ; Function Attrs: nounwind optsize ssp 14 define void @foobar() !dbg !15 { 15 entry: 16 tail call void @llvm.dbg.value(metadata %struct.S1* @p, metadata !18, metadata !DIExpression()) , !dbg !25 17 ret void, !dbg !32 18 } 19 20 ; Function Attrs: nounwind readnone speculatable 21 declare void @llvm.dbg.value(metadata, metadata, metadata) #2 22 23 !llvm.dbg.cu = !{!2} 24 !llvm.module.flags = !{!14} 25 26 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 27 !1 = !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 14, type: !6, isLocal: false, isDefinition: true) 28 !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) 29 !3 = !DIFile(filename: "nm2.c", directory: "/private/tmp") 30 !4 = !{} 31 !5 = !{!0} 32 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "S1", scope: !2, file: !3, line: 4, baseType: !7) 33 !7 = !DICompositeType(tag: DW_TAG_structure_type, name: "S1", scope: !2, file: !3, line: 1, size: 128, align: 64, elements: !8) 34 !8 = !{!9, !12} 35 !9 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !3, file: !3, line: 2, baseType: !10, size: 64, align: 64) 36 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !11, size: 64, align: 64) 37 !11 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float) 38 !12 = !DIDerivedType(tag: DW_TAG_member, name: "nums", scope: !3, file: !3, line: 3, baseType: !13, size: 32, align: 32, offset: 64) 39 !13 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 40 !14 = !{i32 1, !"Debug Info Version", i32 3} 41 !15 = distinct !DISubprogram(name: "foobar", scope: !3, file: !3, line: 15, type: !16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2) 42 !16 = !DISubroutineType(types: !17) 43 !17 = !{null} 44 !18 = !DILocalVariable(name: "sp", arg: 1, scope: !19, file: !3, line: 7, type: !24) 45 !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) 46 !20 = !DISubroutineType(types: !21) 47 !21 = !{!13} 48 !22 = !{!18, !23} 49 !23 = !DILocalVariable(name: "nums", arg: 2, scope: !19, file: !3, line: 7, type: !13) 50 !24 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !6, size: 64, align: 64) 51 !25 = !DILocation(line: 7, column: 13, scope: !19, inlinedAt: !26) 52 !26 = !DILocation(line: 16, column: 3, scope: !27) 53 !27 = distinct !DILexicalBlock(scope: !15, file: !3, line: 15, column: 15) 54 !32 = !DILocation(line: 17, column: 1, scope: !27) 55 56... 57--- 58name: foobar 59tracksRegLiveness: true 60body: | 61 bb.0: 62 %1:gr64 = IMPLICIT_DEF 63 %2:gr64 = IMPLICIT_DEF 64 65 bb.1: 66 ; This DBG_VALUE will be discarded (use before def of %0). 67 DBG_VALUE debug-use %0, debug-use $noreg, !18, !DIExpression(), debug-location !25 68 %0:gr64 = IMPLICIT_DEF 69 %0:gr64 = IMPLICIT_DEF 70 %0:gr64 = IMPLICIT_DEF 71 %0:gr64 = IMPLICIT_DEF 72 73 bb.2: 74 ; 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). 75 DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25 76 %1:gr64 = IMPLICIT_DEF 77 %1:gr64 = IMPLICIT_DEF 78 %1:gr64 = IMPLICIT_DEF 79 %1:gr64 = IMPLICIT_DEF 80 ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev instruction, 81 ; so the value should be available for as long as the register allocated to %1 is live. 82 DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25 83 84 bb.3: 85 %1:gr64 = IMPLICIT_DEF 86 DBG_VALUE 0, debug-use $noreg, !23, !DIExpression(), debug-location !25 87 ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev non-dbg instruction, 88 ; so the value should be available for as long as the register allocated to %1 is live. 89 DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25 90 91 bb.4: 92 ; All DBG_VALUEs here should survive. %2 is livein as it was defined in bb.0, and it has use/def in the BTS64rr instruction. 93 DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25 94 %2:gr64 = BTS64rr %2, 0, implicit-def $eflags 95 DBG_VALUE 0, debug-use $noreg, !23, !DIExpression(), debug-location !25 96 DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25 97 %2:gr64 = BTS64rr %2, 0, implicit-def $eflags 98 DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25 99 %2:gr64 = BTS64rr %2, 0, implicit-def $eflags 100 DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25 101 102 bb.5: 103 RET 0, debug-location !32 104... 105 106# CHECK-LABEL: name: foobar 107 108# CHECK-LABEL: bb.1: 109# CHECK: DBG_VALUE debug-use $noreg 110 111# CHECK-LABEL: bb.2: 112# CHECK: DBG_VALUE debug-use $noreg 113# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF 114# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF 115# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF 116# CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF 117# CHECK-NEXT: DBG_VALUE debug-use $rcx, debug-use $noreg, !18, !DIExpression() 118 119# CHECK-LABEL: bb.3: 120# CHECK: dead renamable $rcx = IMPLICIT_DEF 121# CHECK-NEXT: DBG_VALUE 0, debug-use $noreg, !23, !DIExpression() 122# CHECK-NEXT: DBG_VALUE debug-use $rcx, debug-use $noreg, !18, !DIExpression() 123 124# CHECK-LABEL: bb.4: 125# CHECK: liveins: $rax 126# CHECK: DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression() 127# CHECK-NEXT: renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags 128# CHECK-NEXT: DBG_VALUE 0, debug-use $noreg, !23, !DIExpression() 129# CHECK-NEXT: DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression() 130# CHECK-NEXT: renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags 131# CHECK-NEXT: DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression() 132# CHECK-NEXT: dead renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags 133 134# CHECK-LABEL: bb.5: 135# CHECK-NEXT: RET 0 136