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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# Test that the -trim-var-locs option (enabled by default) works correctly.6# 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, enums: !2, splitDebugInlining: false, nameTableKind: None)20 !1 = !DIFile(filename: "example.c", directory: "/")21 !2 = !{}22 !3 = !{i32 7, !"Dwarf Version", i32 4}23 !4 = !{i32 2, !"Debug Info Version", i32 3}24 !5 = !{i32 1, !"wchar_size", i32 4}25 !6 = !{!"clang version 11.0.0"}26 !8 = !DISubroutineType(types: !9)27 !9 = !{!10}28 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)29 !11 = !{!12, !13, !25}30 !22 = !DISubroutineType(types: !23)31 !23 = !{!10, !10}32 ; --- Important metadata ---33 !7 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)34 !24 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 3)35 !14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)36 !12 = !DILocalVariable(name: "locala", scope: !7, file: !1, line: 1, type: !10)37 !13 = !DILocalVariable(name: "localb", scope: !14, file: !1, line: 2, type: !10)38 !25 = !DILocalVariable(name: "localc", scope: !24, file: !1, line: 3, type: !10)39 !15 = !DILocation(line: 1, column: 0, scope: !7)40 !18 = !DILocation(line: 2, column: 1, scope: !14)41 !26 = !DILocation(line: 3, column: 1, scope: !24)42...43---44name: fun45body: |46 bb.0.entry:47 ; This is the scope and variable structure:48 ; int fun() { // scope fun !749 ; int locala; // scope fun !7, var locala !12, debug-location !1550 ; { int localb; } // scope fun:block !14, var localb !13, debug-location !1851 ; { int localc; } // scope fun:block !24, var localc !25, debug-location !2652 ; }53 ;54 ; (1) Check that a variable location range found in implied scope fun !7 is55 ; not trimmed.56 ;57 ; CHECK: DW_TAG_variable58 ; CHECK-NEXT: DW_AT_location59 ; CHECK-NEXT: DW_OP_reg0 RAX60 ; CHECK-NEXT: DW_AT_name ("locala")61 ;62 ; scope fun !7 is implied as we're in function fun and haven't seen a debug-location63 $eax = MOV32ri 064 ; locala range 1 start in implicit scope fun !765 DBG_VALUE $eax, $noreg, !12, !DIExpression(), debug-location !1566 $edi = MOV32ri 167 ; locala range 1 clobber in implicit scope fun !768 $eax = MOV32ri 269 ; scope fun !7 explicit start70 $edi = MOV32ri 3, debug-location !1571 72 ; (2) Check that a variable location range found outside lexical block is73 ; trimmed. See check directives for (3).74 ;75 ; localb range 1 start in scope fun !7 (outside block !14).76 DBG_VALUE $eax, $noreg, !13, !DIExpression(), debug-location !1877 ; localb range 1 clobber in scope fun !778 $edi = MOV32ri 4, debug-location !1579 80 ; (3) Check that a variable location range which overlaps the entire lexical81 ; block is not trimmed.82 ;83 ; CHECK: DW_TAG_variable84 ; CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)85 ; CHECK-NEXT: DW_AT_name ("localb")86 ;87 ; localb range 2 clobber in scope fun !7 (outside block !14)88 DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !1889 ; scope block !14 start (and only instruction)90 $edi = MOV32ri 5, debug-location !1891 92 ; (4) Check that a variable location range in scope fun !7 (outside block93 ; !14) is trimmed. See check directives for (3).94 ;95 ; localb range 3 starts after scope !14 (prev instr is last in scope)96 DBG_VALUE $rax, $noreg, !13, !DIExpression(), debug-location !1897 ; scope block !14 end98 $edi = MOV32ri 6, debug-location !1599 100 ; (5) Check that a variable location range found between disjoint scope101 ; ranges is trimmed.102 ;103 ; CHECK: DW_TAG_variable104 ; CHECK-NOT: DW_AT_location105 ; CHECK-NEXT: DW_AT_name ("localc")106 ;107 ; scope fun !7108 $edi = MOV32ri 6, debug-location !15109 ; scope block !24 start and end range 1110 $edi = MOV32ri 7, debug-location !26111 ; localc range 1 start in scope !7112 DBG_VALUE $edi, $noreg, !25, !DIExpression(), debug-location !18113 ; localc range 1 clobber in scope !7114 $edi = MOV32ri 8, debug-location !15115 ; scope block !24 start and end range 2116 $edi = MOV32ri 9, debug-location !26117 118 ; scope fun !7119 RET64 debug-location !15120...121