forked from OSchip/llvm-project
52 lines
1.9 KiB
Plaintext
52 lines
1.9 KiB
Plaintext
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# RUN: llc -O0 -mtriple x86_64-pc-linux-gnu -run-pass simple-register-coalescing -verify-coalescing -o - %s | FileCheck %s
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--- |
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define i16 @main() {
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entry:
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call void @llvm.dbg.value(metadata i8 0, metadata !11, metadata !DIExpression()), !dbg !13
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ret i16 0
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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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", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "tmp.c", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"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 1}
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!6 = !{!"clang"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: false, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 5, type: !12)
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!12 = !DIBasicType(name: "mytype", size: 16)
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!13 = !DILocation(line: 5, column: 11, scope: !7)
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...
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---
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name: main
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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%0:gr16_abcd = MOV16ri 0
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DBG_VALUE debug-use %0.sub_8bit:gr16_abcd, debug-use $noreg, !11, !DIExpression(), debug-location !13
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undef %6.sub_8bit:gr16_abcd = COPY killed %0.sub_8bit
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dead $dx = COPY killed %6
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...
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# Verify that we get $dl in the DBG_VALUE (and not $dx.sub_8bit as we used to
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# do before the bugfix, which resulted in "Bad machine code: Illegal
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# subregister index for physical register").
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#
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# CHECK: bb.0.entry:
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# CHECK-NEXT: $dx = MOV16ri 0
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# CHECK-NEXT: DBG_VALUE debug-use $dl,
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