101 lines
4.3 KiB
LLVM
101 lines
4.3 KiB
LLVM
; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - | FileCheck %s
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; Generated with "clang -g -c -emit-llvm -S -O3"
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; This will test several features of merging debug locations. Importantly,
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; locations with the same source line but different scopes should be merged to
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; a line zero location at the nearest common scope and inlining. The location
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; of the single call to "common" (the two calls are collapsed together by
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; BranchFolding) should be attributed to line zero inside the wrapper2 inlined
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; scope within f1.
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; void common();
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; inline void wrapper() { common(); }
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; extern bool b;
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; void sink();
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; inline void wrapper2() {
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; if (b) {
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; sink();
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; wrapper();
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; } else
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; wrapper();
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; }
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; void f1() { wrapper2(); }
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; Ensure there is only one inlined_subroutine (for wrapper2, none for wrapper)
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; & that its address range includes the call to 'common'.
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; CHECK: jmp _Z6commonv
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; CHECK-NEXT: [[LABEL:.*]]:
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; CHECK: .section .debug_info
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: {{DW_TAG\|End Of Children}}
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NOT: {{DW_TAG\|End Of Children}}
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; CHECK: [[LABEL]]-{{.*}} DW_AT_high_pc
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; CHECK-NOT: DW_TAG
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@b = external dso_local local_unnamed_addr global i8, align 1
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; Function Attrs: uwtable
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define dso_local void @_Z2f1v() local_unnamed_addr !dbg !7 {
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entry:
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%0 = load i8, i8* @b, align 1, !dbg !10, !tbaa !14, !range !18
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%tobool.i = icmp eq i8 %0, 0, !dbg !10
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br i1 %tobool.i, label %if.else.i, label %if.then.i, !dbg !19
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if.then.i: ; preds = %entry
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tail call void @_Z4sinkv(), !dbg !20
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tail call void @_Z6commonv(), !dbg !22
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br label %_Z8wrapper2v.exit, !dbg !25
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if.else.i: ; preds = %entry
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tail call void @_Z6commonv(), !dbg !26
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br label %_Z8wrapper2v.exit
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_Z8wrapper2v.exit: ; preds = %if.then.i, %if.else.i
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ret void, !dbg !28
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}
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declare dso_local void @_Z4sinkv() local_unnamed_addr
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declare dso_local void @_Z6commonv() local_unnamed_addr
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 340559) (llvm/trunk 340572)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "merge_loc.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 8.0.0 (trunk 340559) (llvm/trunk 340572)"}
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!7 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 12, type: !8, isLocal: false, isDefinition: true, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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!10 = !DILocation(line: 6, column: 7, scope: !11, inlinedAt: !13)
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!11 = distinct !DILexicalBlock(scope: !12, file: !1, line: 6, column: 7)
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!12 = distinct !DISubprogram(name: "wrapper2", linkageName: "_Z8wrapper2v", scope: !1, file: !1, line: 5, type: !8, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!13 = distinct !DILocation(line: 13, column: 3, scope: !7)
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!14 = !{!15, !15, i64 0}
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!15 = !{!"bool", !16, i64 0}
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!16 = !{!"omnipotent char", !17, i64 0}
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!17 = !{!"Simple C++ TBAA"}
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!18 = !{i8 0, i8 2}
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!19 = !DILocation(line: 6, column: 7, scope: !12, inlinedAt: !13)
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!20 = !DILocation(line: 7, column: 5, scope: !21, inlinedAt: !13)
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!21 = distinct !DILexicalBlock(scope: !11, file: !1, line: 6, column: 10)
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!22 = !DILocation(line: 2, column: 25, scope: !23, inlinedAt: !24)
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!23 = distinct !DISubprogram(name: "wrapper", linkageName: "_Z7wrapperv", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!24 = distinct !DILocation(line: 8, column: 5, scope: !21, inlinedAt: !13)
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!25 = !DILocation(line: 9, column: 3, scope: !21, inlinedAt: !13)
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!26 = !DILocation(line: 2, column: 25, scope: !23, inlinedAt: !27)
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!27 = distinct !DILocation(line: 10, column: 5, scope: !11, inlinedAt: !13)
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!28 = !DILocation(line: 14, column: 1, scope: !7)
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