93 lines
3.9 KiB
YAML
93 lines
3.9 KiB
YAML
# RUN: llc %s --start-after=livedebugvalues -filetype=obj -o - \
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# RUN: | llvm-dwarfdump - -name local* -regex \
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# RUN: | FileCheck %s
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#
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## This tests certain single location detection functionality. The Test MIR
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## is hand written. Test directives and comments inline.
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--- |
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local i32 @fun() local_unnamed_addr !dbg !7 {
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entry:
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ret i32 0
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}
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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_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "example.c", directory: "/")
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!3 = !{i32 7, !"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 11.0.0"}
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!22 = !DISubroutineType(types: !23)
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!23 = !{!10, !10}
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; --- Important metadata ---
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!7 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!24 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 3)
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!14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)
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!12 = !DILocalVariable(name: "locala", scope: !7, file: !1, line: 1, type: !10)
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!13 = !DILocalVariable(name: "localb", scope: !14, file: !1, line: 2, type: !10)
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!25 = !DILocalVariable(name: "localc", scope: !24, file: !1, line: 3, type: !10)
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!27 = !DILocalVariable(name: "tmp", scope: !14, file: !1, line: 2, type: !10)
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!15 = !DILocation(line: 1, column: 0, scope: !7)
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!18 = !DILocation(line: 2, column: 1, scope: !14)
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!26 = !DILocation(line: 3, column: 1, scope: !24)
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...
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---
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name: fun
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body: |
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bb.0.entry:
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;; This is the scope and variable structure:
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;; int fun() { // scope fun !7
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;; int locala; // scope fun !7, var locala !12, debug-location !15
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;; { int localb; // scope fun:block !14, var localb !13, debug-location !18
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;; int tmp; } // scope fun:block !14, var localb !27, debug-location !18
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;; { int localc; } // scope fun:block !24, var localc !25, debug-location !26
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;; }
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;;
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;; (1) Check that frame-setup instructions are not counted against
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;; locations being valid throughout the function call.
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;
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
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; CHECK-NEXT: DW_AT_name ("locala")
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$rbp = frame-setup MOV64rr $rsp
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DBG_VALUE $edi, $noreg, !12, !DIExpression(), debug-location !15
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$eax = MOV32ri 0, debug-location !15
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;; (2) The scope block ends with a meta instruction. A location range ends
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;; with the final non-meta instruction in the scope. Check that
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;; location is considered valid throughout.
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;
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
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; CHECK-NEXT: DW_AT_name ("localb")
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;
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;; start scope, start location range
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DBG_VALUE $ecx, $noreg, !13, !DIExpression(), debug-location !18
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;; end location range
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$ecx = MOV32ri 1, debug-location !18
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;; end scope
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DBG_VALUE $noreg, $noreg, !27, !DIExpression(), debug-location !18
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;; (3) The final instruction in the scope closes a location range. Check
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;; that location is considered valid throughout.
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;
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
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; CHECK-NEXT: DW_AT_name ("localc")
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;
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;; start scope, start location range
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DBG_VALUE $esi, $noreg, !25, !DIExpression(), debug-location !26
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;; end scope, end location range
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$esi = MOV32ri 2, debug-location !26
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RETQ debug-location !15
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...
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