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54 lines
2.0 KiB
54 lines
2.0 KiB
# After adding new debug instruction for labels, it is possible to have
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# debug instructions before DBG_VALUE. When querying DBG_VALUE's slot
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# index using previous instruction and the previous instruction is debug
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# instruction, it will trigger an assertion as using debug instruction
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# to get slot index. This test is to emulate the case when DBG_VALUE's
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# previous instruction is DBG_LABEL in LiveDebugVariables pass.
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#
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# RUN: llc -run-pass=livedebugvars -run-pass=virtregrewriter -o - %s | FileCheck %s
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--- |
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @foo(i32 %a, i32 %b) !dbg !4 {
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entry:
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ret i32 0, !dbg !12
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "debug-var-slot.c", directory: "./")
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!2 = !{}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !DILabel(scope: !4, name: "top", file: !1, line: 4)
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!9 = !DILocation(line: 4, column: 1, scope: !4)
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!10 = !DILocalVariable(name: "local_var", scope: !4, file: !1, line: 7, type: !7)
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!11 = !DILocation(line: 7, column: 1, scope: !4)
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!12 = !DILocation(line: 8, column: 3, scope: !4)
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!13 = !DILocalVariable(name: "local_var2", scope: !4, file: !1, line: 7, type: !7)
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...
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---
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name: foo
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tracksRegLiveness: true
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body: |
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bb.0:
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DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !11
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DBG_LABEL !8, debug-location !9
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DBG_VALUE $edi, $noreg, !10, !DIExpression(), debug-location !11
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RET 0, undef $eax, debug-location !12
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...
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# CHECK-LABEL: name: foo
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# CHECK: bb.0:
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# CHECK-DAG: DBG_LABEL
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# CHECK-DAG: DBG_VALUE $esi
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# CHECK-DAG: DBG_VALUE $edi
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