1833de3ee3
When picking the source location for a branch instruction in the CodeExtractor, we can end up picking the source location of a debugging intrinsic. This never makes sense because any variable assignment information (or labels) might originate from completely different lexical scopes that have been inlined, and also makes the line tables change between -g and -gmlt. Fix this by skipping debug intrinsics when looking for branch source locations. Detected because of test differences with RemoveDIs, the non-intrinsinc form of debug-info -- fixing in intrinsic form to avoid there being spurious test differences when we turn it on.
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: [[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: !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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