Home | History | Annotate | Download | only in X86 
      1 ; RUN: llc -mtriple=x86_64-pc-linux -split-dwarf-file=input.dwo -O3 \
      2 ; RUN:     -function-sections -data-sections \
      3 ; RUN:     -relocation-model=pic -filetype=asm \
      4 ; RUN:     -generate-type-units -o - %s | \
      5 ; RUN:     FileCheck %s --check-prefix=CHECK-ASM
      6 ; RUN: llc -mtriple=x86_64-pc-linux -split-dwarf-file=input.dwo -O3 \
      7 ; RUN:     -function-sections -data-sections \
      8 ; RUN:     -relocation-model=pic -filetype=obj \
      9 ; RUN:     -generate-type-units -o - %s | \
     10 ; RUN:     llvm-readelf -sections | \
     11 ; RUN:     FileCheck %s --check-prefix=CHECK-ELF
     12 ; Created from `clang++ -fxray-instrument -gsplit-dwarf -fdebug-types-section
     13 ; -ffunction-sections -fdata-sections -emit-llvm -S input.cc`:
     14 ; input.cc:
     15 ;
     16 ; class a {
     17 ;   int b();
     18 ; };
     19 ; int a::b() {
     20 ;   for (;;)
     21 ;     ;
     22 ; }
     23 ;
     24 ; In this test we want to make sure that the xray_instr_map section for
     25 ; `a::b()` is actually associated with the function's symbol instead of the
     26 ; .debug_types.dwo section.
     27 ;
     28 ; CHECK-ASM: xray_fn_idx,"awo",@progbits,_ZN1a1bEv,unique,1
     29 ;
     30 ; CHECK-ELF-DAG: [[FSECT:[0-9]+]]] .text._ZN1a1bEv PROGBITS
     31 ; CHECK-ELF-DAG: [{{.*}}] .debug_types.dwo PROGBITS
     32 ; CHECK-ELF-DAG: [{{.*}}] xray_instr_map PROGBITS {{.*}} {{.*}} {{.*}} {{.*}} WAL [[FSECT]]
     33 target triple = "x86_64-pc-linux"
     34 
     35 %class.a = type { i8 }
     36 
     37 ; Function Attrs: nounwind readnone uwtable
     38 define i32 @_ZN1a1bEv(%class.a* nocapture readnone) local_unnamed_addr #0 align 2 !dbg !8 {
     39   tail call void @llvm.dbg.value(metadata %class.a* %0, metadata !17, metadata !DIExpression()), !dbg !19
     40   br label %2, !dbg !20
     41 
     42 ; <label>:2:                                      ; preds = %2, %1
     43   br label %2, !dbg !21, !llvm.loop !25
     44 }
     45 
     46 
     47 ; Function Attrs: nounwind readnone speculatable
     48 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
     49 
     50 attributes #0 = { nounwind readnone uwtable "xray-instruction-threshold"="200" }
     51 attributes #1 = { nounwind readnone speculatable }
     52 
     53 !llvm.dbg.cu = !{!0}
     54 !llvm.module.flags = !{!3, !4, !5, !6}
     55 !llvm.ident = !{!7}
     56 
     57 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version trunk (trunk r312634)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, debugInfoForProfiling: true)
     58 !1 = !DIFile(filename: "input.cc", directory: "/usr/local/google/home/dberris/tmp")
     59 !2 = !{}
     60 !3 = !{i32 2, !"Debug Info Version", i32 3}
     61 !4 = !{i32 1, !"wchar_size", i32 4}
     62 !5 = !{i32 7, !"PIC Level", i32 2}
     63 !6 = !{i32 7, !"PIE Level", i32 2}
     64 !7 = !{!"clang version trunk (trunk r312634)"}
     65 !8 = distinct !DISubprogram(name: "b", linkageName: "_ZN1a1bEv", scope: !9, file: !1, line: 4, type: !12, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !11, retainedNodes: !16)
     66 !9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !1, line: 1, size: 8, elements: !10, identifier: "_ZTS1a")
     67 !10 = !{!11}
     68 !11 = !DISubprogram(name: "b", linkageName: "_ZN1a1bEv", scope: !9, file: !1, line: 2, type: !12, isLocal: false, isDefinition: false, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true)
     69 !12 = !DISubroutineType(types: !13)
     70 !13 = !{!14, !15}
     71 !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
     72 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
     73 !16 = !{!17}
     74 !17 = !DILocalVariable(name: "this", arg: 1, scope: !8, type: !18, flags: DIFlagArtificial | DIFlagObjectPointer)
     75 !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
     76 !19 = !DILocation(line: 0, scope: !8)
     77 !20 = !DILocation(line: 5, column: 3, scope: !8)
     78 !21 = !DILocation(line: 5, column: 3, scope: !22)
     79 !22 = !DILexicalBlockFile(scope: !23, file: !1, discriminator: 2)
     80 !23 = distinct !DILexicalBlock(scope: !24, file: !1, line: 5, column: 3)
     81 !24 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 3)
     82 !25 = distinct !{!25, !26, !27}
     83 !26 = !DILocation(line: 5, column: 3, scope: !24)
     84 !27 = !DILocation(line: 6, column: 5, scope: !24)
     85