1; RUN: opt -passes=hotcoldsplit -hotcoldsplit-threshold=0 -S < %s | FileCheck %s 2 3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-apple-macosx10.14.0" 5 6; The block "if.end" in @foo is extracted into a new function, @foo.cold.1. 7; Check the following: 8 9; CHECK-LABEL: define {{.*}}@foo.cold.1 10 11; - The llvm.dbg.value intrinsic pointing to an argument in @foo (%arg1) is 12; dropped 13; CHECK-NOT: #dbg_value 14 15; - Instructions without locations in the original function have no 16; location in the new function 17; CHECK: [[ADD1:%.*]] = add i32 %{{.*}}, 1{{$}} 18 19; - Ditto (see above), calls are not special 20; CHECK-NEXT: call void @sink(i32 [[ADD1]]) 21 22; - Line locations are preserved 23; CHECK-NEXT: call void @sink(i32 [[ADD1]]), !dbg [[LINE1:![0-9]+]] 24 25; - llvm.dbg.value intrinsics for values local to @foo.cold.1 are preserved 26; CHECK-NEXT: #dbg_value(i32 [[ADD1]], [[VAR1:![0-9]+]], !DIExpression(), [[LINE1]] 27 28; - Expressions inside of dbg.value intrinsics are preserved 29; CHECK-NEXT: #dbg_value(i32 [[ADD1]], [[VAR1]], !DIExpression(DW_OP_constu, 1, DW_OP_plus, DW_OP_stack_value) 30 31; CHECK-NEXT: call void @sink(i32 [[ADD1]]), !dbg [[LINE2:![0-9]+]] 32; CHECK-NEXT: call void @sink(i32 [[ADD1]]), !dbg [[LINE3:![0-9]+]] 33 34; CHECK-NEXT: #dbg_value(i32 [[ADD1]] 35; CHECK-SAME: [[VAR_FROM_INLINE_ME:![0-9]+]] 36; CHECK-SAME: [[LINE2]] 37 38; CHECK-NEXT: #dbg_value(i32 [[ADD1]] 39; CHECK-SAME: [[VAR2:![0-9]+]] 40; CHECK-SAME: [[LINE4:![0-9]+]] 41 42 43; - The DISubprogram for @foo.cold.1 has an empty DISubroutineType 44; CHECK: [[FILE:![0-9]+]] = !DIFile(filename: "<stdin>" 45; CHECK: [[EMPTY_MD:![0-9]+]] = !{} 46; CHECK: [[EMPTY_TYPE:![0-9]+]] = !DISubroutineType(types: [[EMPTY_MD]]) 47; CHECK: [[INLINE_ME_SCOPE:![0-9]+]] = distinct !DISubprogram(name: "inline_me" 48; CHECK: [[NEWSCOPE:![0-9]+]] = distinct !DISubprogram(name: "foo.cold.1", linkageName: "foo.cold.1", scope: null, file: [[FILE]], type: [[EMPTY_TYPE]], spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized 49 50; - Line locations in @foo.cold.1 point to the new scope for @foo.cold.1 51; CHECK: [[LINE1]] = !DILocation(line: 1, column: 1, scope: [[NEWSCOPE]]) 52 53; CHECK: [[LINE2]] = !DILocation(line: 2, column: 2, scope: [[INLINE_ME_SCOPE]] 54; CHECK-SAME: inlinedAt: [[LINE3]] 55; CHECK: [[LINE3]] = !DILocation(line: 3, column: 3, scope: [[INLINED_SCOPE1:![0-9]*]] 56; CHECK: [[INLINED_SCOPE1]] = !DILexicalBlock(scope: [[INLINED_SCOPE2:![0-9]*]], file: [[FILE]], line: 4, column: 4) 57; CHECK: [[INLINED_SCOPE2]] = !DILexicalBlock(scope: [[NEWSCOPE]], file: [[FILE]], line: 5, column: 5) 58 59; CHECK: [[VAR_FROM_INLINE_ME]] = !DILocalVariable(name: "var_from_inline_me", 60; CHECK-SAME: scope: [[INLINE_ME_SCOPE]] 61 62; CHECK: [[VAR2]] = !DILocalVariable(name: "var_from_scope_in_foo", 63; CHECK-SAME: scope: [[NEWSCOPE2:![0-9]+]] 64; CHECK: [[NEWSCOPE2]] = !DILexicalBlock(scope: [[NEWSCOPE]], file: [[FILE]], line: 7, column: 7) 65; CHECK: [[LINE4]] = !DILocation(line: 6, column: 6, scope: [[NEWSCOPE2]] 66 67define void @foo(i32 %arg1) !dbg !6 { 68entry: 69 %var = add i32 0, 0, !dbg !11 70 br i1 undef, label %if.then, label %if.end 71 72if.then: ; preds = %entry 73 ret void 74 75if.end: ; preds = %entry 76 call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11 77 %add1 = add i32 %arg1, 1 78 call void @sink(i32 %add1) 79 call void @sink(i32 %add1), !dbg !11 80 call void @llvm.dbg.value(metadata i32 %add1, metadata !9, metadata !DIExpression()), !dbg !11 81 call void @llvm.dbg.value(metadata i32 %add1, metadata !9, metadata !DIExpression(DW_OP_constu, 1, DW_OP_plus, DW_OP_stack_value)), !dbg !11 82 call void @sink(i32 %add1), !dbg !13 ; inlined from @inline_me 83 call void @sink(i32 %add1), !dbg !14 ; not inlined, but inside some scope of foo 84 call void @llvm.dbg.value(metadata i32 %add1, metadata !17, metadata !DIExpression()), !dbg !13 ; variable from @inline_me, should preserve scope in !17. 85 call void @llvm.dbg.value(metadata i32 %add1, metadata !18, metadata !DIExpression()), !dbg !19 ; variable not inlined, but inside some scope of foo 86 ret void 87} 88 89declare void @llvm.dbg.value(metadata, metadata, metadata) 90 91declare void @sink(i32) cold 92 93define void @inline_me() !dbg !12{ 94 ret void 95} 96 97!llvm.dbg.cu = !{!0} 98!llvm.debugify = !{!3, !4} 99!llvm.module.flags = !{!5} 100 101!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 102!1 = !DIFile(filename: "<stdin>", directory: "/") 103!2 = !{} 104!3 = !{i32 7} 105!4 = !{i32 1} 106!5 = !{i32 2, !"Debug Info Version", i32 3} 107!6 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8) 108!7 = !DISubroutineType(types: !2) 109!8 = !{!9} 110!9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10) 111!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned) 112!11 = !DILocation(line: 1, column: 1, scope: !6) 113!12 = distinct !DISubprogram(name: "inline_me", linkageName: "inline_me", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8) 114!13 = !DILocation(line: 2, column: 2, scope: !12, inlinedAt: !14) 115!14 = !DILocation(line: 3, column: 3, scope: !15) 116!15 = distinct !DILexicalBlock(scope: !16, file: !1, line: 4, column: 4) 117!16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 5, column: 5) 118!17 = !DILocalVariable(name: "var_from_inline_me", scope: !12, file: !1, line: 1, type: !10) 119!18 = !DILocalVariable(name: "var_from_scope_in_foo", scope: !20, file: !1, line: 1, type: !10) 120!19 = !DILocation(line: 6, column: 6, scope: !20) 121!20 = distinct !DILexicalBlock(scope: !6, file: !1, line: 7, column: 7) 122