e2a2c03eef
These checks ensure that retained nodes of a DISubprogram belong to the subprogram. Tests with incorrect IR are fixed. We should not have variables of one subprogram present in retained nodes of other subprograms. Also, interface for accessing DISubprogram's retained nodes is slightly refactored. `DISubprogram::visitRetainedNodes` and `DISubprogram::forEachRetainedNode` are added to avoid repeating checks like ``` if (const auto *LV = dyn_cast<DILocalVariable>(N)) ... else if (const auto *L = dyn_cast<DILabel>(N)) ... else if (const auto *IE = dyn_cast<DIImportedEntity>(N)) ... ```
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: #dbg_label([[LABEL:![0-9]+]], [[LINE:![0-9]+]]
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; CHECK: #dbg_label([[LABEL_IN_INLINE_ME:![0-9]+]], [[LINE2:![0-9]+]]
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; CHECK: #dbg_label([[SCOPED_LABEL:![0-9]+]], [[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: [[LABEL]] = !DILabel(scope: [[SCOPE]], name: "bye", file: [[FILE]], line: 28
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; CHECK: [[LINE]] = !DILocation(line: 1, column: 1, scope: [[SCOPE]]
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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: !2)
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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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