b432dd2d4b
When a dbg.label is moved into a new function, its corresponding scope should be preserved, with the exception of the subprogram at the end of the scope chain, which should now be the subprogram of the destination function. See D139671. Differential Revision: https://reviews.llvm.org/D139849
74 lines
3.4 KiB
LLVM
74 lines
3.4 KiB
LLVM
; RUN: opt -passes=hotcoldsplit -hotcoldsplit-threshold=0 -S < %s | FileCheck %s
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; When an llvm.dbg.label intrinsic is extracted into a new function, make sure
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; that its metadata argument is a DILabel that points to a scope within the new
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; function.
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;
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; In this example, the label "bye" points to the scope for @foo before
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; splitting, and should point to the scope for @foo.cold.1 after splitting.
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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-macosx10.14.0"
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; CHECK-LABEL: define {{.*}}@foo.cold.1
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; CHECK: llvm.dbg.label(metadata [[LABEL:![0-9]+]]), !dbg [[LINE:![0-9]+]]
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; CHECK: llvm.dbg.label(metadata [[LABEL_IN_INLINE_ME:![0-9]+]]), !dbg [[LINE2:![0-9]+]]
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; CHECK: llvm.dbg.label(metadata [[SCOPED_LABEL:![0-9]+]]), !dbg [[LINE]]
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; CHECK: [[FILE:![0-9]+]] = !DIFile
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; CHECK: [[INLINE_ME_SCOPE:![0-9]+]] = distinct !DISubprogram(name: "inline_me"
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; CHECK: [[SCOPE:![0-9]+]] = distinct !DISubprogram(name: "foo.cold.1"
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; CHECK: [[LINE]] = !DILocation(line: 1, column: 1, scope: [[SCOPE]]
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; CHECK: [[LABEL]] = !DILabel(scope: [[SCOPE]], name: "bye", file: [[FILE]], line: 28
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; CHECK: [[LABEL_IN_INLINE_ME]] = !DILabel(scope: [[INLINE_ME_SCOPE]], name: "label_in_@inline_me", file: [[FILE]], line: 29
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; CHECK: [[LINE2]] = !DILocation(line: 2, column: 2, scope: [[INLINE_ME_SCOPE]], inlinedAt: [[LINE]]
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; CHECK: [[SCOPED_LABEL]] = !DILabel(scope: [[SCOPE_IN_FOO:![0-9]+]], name: "scoped_label_in_foo", file: [[FILE]], line: 30
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; CHECK: [[SCOPE_IN_FOO]] = !DILexicalBlock(scope: [[SCOPE]], file: [[FILE]], line: 31, column: 31)
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define void @foo(i32 %arg1) !dbg !6 {
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entry:
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%var = add i32 0, 0, !dbg !11
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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ret void
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if.end: ; preds = %entry
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call void @llvm.dbg.label(metadata !12), !dbg !11
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call void @llvm.dbg.label(metadata !14), !dbg !15
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call void @llvm.dbg.label(metadata !16), !dbg !11
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call void @sink()
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ret void
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}
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declare void @llvm.dbg.label(metadata)
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declare void @sink() cold
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define void @inline_me() !dbg !13 {
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!3, !4}
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!llvm.module.flags = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/")
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!2 = !{}
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!3 = !{i32 7}
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!4 = !{i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!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)
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!7 = !DISubroutineType(types: !2)
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!8 = !{!9}
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!9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
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!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
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!11 = !DILocation(line: 1, column: 1, scope: !6)
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!12 = !DILabel(scope: !6, name: "bye", file: !1, line: 28)
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!13 = 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)
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!14 = !DILabel(scope: !13, name: "label_in_@inline_me", file: !1, line: 29)
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!15 = !DILocation(line: 2, column: 2, scope: !13, inlinedAt: !11)
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!16 = !DILabel(scope: !17, name: "scoped_label_in_foo", file: !1, line: 30)
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!17 = distinct !DILexicalBlock(scope: !6, file: !1, line: 31, column: 31)
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