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1# RUN: llc %s --start-after=livedebugvalues -filetype=obj -o - \2# RUN: | llvm-dwarfdump - -name local* -regex \3# RUN: | FileCheck %s4#5## This tests certain single location detection functionality. The Test MIR6## is hand written. Test directives and comments inline.7 8--- |9 target triple = "x86_64-unknown-linux-gnu"10 define dso_local i32 @fun() local_unnamed_addr !dbg !7 {11 entry:12 ret i32 013 }14 15 !llvm.dbg.cu = !{!0}16 !llvm.module.flags = !{!3, !4, !5}17 !llvm.ident = !{!6}18 19 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)20 !1 = !DIFile(filename: "example.c", directory: "/")21 !3 = !{i32 7, !"Dwarf Version", i32 4}22 !4 = !{i32 2, !"Debug Info Version", i32 3}23 !5 = !{i32 1, !"wchar_size", i32 4}24 !6 = !{!"clang version 11.0.0"}25 !8 = !DISubroutineType(types: !9)26 !9 = !{!10}27 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)28 !22 = !DISubroutineType(types: !23)29 !23 = !{!10, !10}30 ; --- Important metadata ---31 !7 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)32 !24 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 3)33 !14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)34 !12 = !DILocalVariable(name: "locala", scope: !7, file: !1, line: 1, type: !10)35 !13 = !DILocalVariable(name: "localb", scope: !14, file: !1, line: 2, type: !10)36 !25 = !DILocalVariable(name: "localc", scope: !24, file: !1, line: 3, type: !10)37 !27 = !DILocalVariable(name: "tmp", scope: !14, file: !1, line: 2, type: !10)38 !15 = !DILocation(line: 1, column: 0, scope: !7)39 !18 = !DILocation(line: 2, column: 1, scope: !14)40 !26 = !DILocation(line: 3, column: 1, scope: !24)41...42---43name: fun44body: |45 bb.0.entry:46 ;; This is the scope and variable structure:47 ;; int fun() { // scope fun !748 ;; int locala; // scope fun !7, var locala !12, debug-location !1549 ;; { int localb; // scope fun:block !14, var localb !13, debug-location !1850 ;; int tmp; } // scope fun:block !14, var localb !27, debug-location !1851 ;; { int localc; } // scope fun:block !24, var localc !25, debug-location !2652 ;; }53 ;;54 ;; (1) Check that frame-setup instructions are not counted against55 ;; locations being valid throughout the function call.56 ;57 ; CHECK: DW_TAG_variable58 ; CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)59 ; CHECK-NEXT: DW_AT_name ("locala")60 $rbp = frame-setup MOV64rr $rsp61 DBG_VALUE $edi, $noreg, !12, !DIExpression(), debug-location !1562 $eax = MOV32ri 0, debug-location !1563 64 ;; (2) The scope block ends with a meta instruction. A location range ends65 ;; with the final non-meta instruction in the scope. Check that66 ;; location is considered valid throughout.67 ;68 ; CHECK: DW_TAG_variable69 ; CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)70 ; CHECK-NEXT: DW_AT_name ("localb")71 ;72 ;; start scope, start location range73 DBG_VALUE $ecx, $noreg, !13, !DIExpression(), debug-location !1874 ;; end location range75 $ecx = MOV32ri 1, debug-location !1876 ;; end scope77 DBG_VALUE $noreg, $noreg, !27, !DIExpression(), debug-location !1878 79 ;; (3) The final instruction in the scope closes a location range. Check80 ;; that location is considered valid throughout.81 ;82 ; CHECK: DW_TAG_variable83 ; CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)84 ; CHECK-NEXT: DW_AT_name ("localc")85 ;86 ;; start scope, start location range87 DBG_VALUE $esi, $noreg, !25, !DIExpression(), debug-location !2688 ;; end scope, end location range89 $esi = MOV32ri 2, debug-location !2690 91 RET64 debug-location !1592...93