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08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
91 lines
5.2 KiB
LLVM
91 lines
5.2 KiB
LLVM
; RUN: llc -start-after=codegenprepare -stop-before expand-isel-pseudos -o - %s | FileCheck %s
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; This is a reproducer based on the test case from PR37321.
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; We verify that the fragment for the last DBG_VALUE is limited depending
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; on the size of the original fragment (and that we do not emit more
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; DBG_VALUE instructions than needed in case we cover the whole original
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; fragment with just a few DBG_VALUE instructions).
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; CHECK-LABEL: bb.{{.*}}.if.end36:
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; CHECK: [[REG1:%[0-9]+]]:gr32 = PHI
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; CHECK-NEXT: [[REG2:%[0-9]+]]:gr32 = PHI
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; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
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; CHECK-NEXT: DBG_VALUE [[REG1]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
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; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
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; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 16)
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; CHECK-NEXT: DBG_VALUE [[REG1]], $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 10, 32)
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; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 42, 13)
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; CHECK-NOT: DBG_VALUE
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686-w64-windows-gnu"
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; Function Attrs: nounwind readnone
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define dso_local i64 @nextafterl(i80 %a) local_unnamed_addr #0 !dbg !6 {
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entry:
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br i1 undef, label %if.else, label %if.then13, !dbg !28
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if.then13: ; preds = %entry
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%u.sroa.0.8.insert.insert = or i80 %a, 2222, !dbg !29
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br label %if.end36, !dbg !33
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if.else: ; preds = %entry
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br label %if.end36
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if.end36: ; preds = %if.else, %if.then13
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%u.sroa.0.1.in = phi i80 [ %u.sroa.0.8.insert.insert, %if.then13 ], [ 1234567, %if.else ]
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call void @llvm.dbg.value(metadata i80 %u.sroa.0.1.in, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 80)), !dbg !34
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call void @llvm.dbg.value(metadata i80 %u.sroa.0.1.in, metadata !12, metadata !DIExpression(DW_OP_LLVM_fragment, 10, 45)), !dbg !34
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%u.sroa.0.0.extract.ashr = ashr i80 %u.sroa.0.1.in, 8, !dbg !35
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%u.sroa.0.0.extract.trunc = trunc i80 %u.sroa.0.0.extract.ashr to i64, !dbg !35
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ret i64 %u.sroa.0.0.extract.trunc
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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) #1
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attributes #0 = { nounwind readnone }
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attributes #1 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!26, !27}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 330808) (llvm/trunk 330813)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
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!1 = !DIFile(filename: "pr37321.c", directory: "")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
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!5 = distinct !DIGlobalVariable(name: "normal_bit", scope: !6, file: !1, line: 31, type: !25, isLocal: true, isDefinition: true)
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!6 = distinct !DISubprogram(name: "nextafterl", scope: !1, file: !1, line: 17, type: !7, isLocal: false, isDefinition: true, scopeLine: 18, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !10)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !9, !9}
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!9 = !DIBasicType(name: "long double", size: 96, encoding: DW_ATE_float)
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!10 = !{!11, !12, !13}
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!11 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 17, type: !9)
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!12 = !DILocalVariable(name: "y", arg: 2, scope: !6, file: !1, line: 17, type: !9)
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!13 = !DILocalVariable(name: "u", scope: !6, file: !1, line: 27, type: !14)
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!14 = distinct !DICompositeType(tag: DW_TAG_union_type, scope: !6, file: !1, line: 19, size: 128, elements: !15)
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!15 = !{!16, !17}
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "ld", scope: !14, file: !1, line: 20, baseType: !9, size: 96)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "parts", scope: !14, file: !1, line: 26, baseType: !18, size: 128)
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!18 = distinct !DICompositeType(tag: DW_TAG_structure_type, scope: !14, file: !1, line: 21, size: 128, elements: !19)
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!19 = !{!20, !22, !24}
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!20 = !DIDerivedType(tag: DW_TAG_member, name: "mantissa", scope: !18, file: !1, line: 23, baseType: !21, size: 64)
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!21 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!22 = !DIDerivedType(tag: DW_TAG_member, name: "expn", scope: !18, file: !1, line: 24, baseType: !23, size: 16, offset: 64)
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!23 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)
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!24 = !DIDerivedType(tag: DW_TAG_member, name: "pad", scope: !18, file: !1, line: 25, baseType: !23, size: 16, offset: 80)
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!25 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !21)
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!26 = !{i32 2, !"Debug Info Version", i32 3}
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!27 = !{i32 1, !"wchar_size", i32 2}
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!28 = !DILocation(line: 47, column: 7, scope: !6)
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!29 = !DILocation(line: 51, column: 14, scope: !30)
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!30 = distinct !DILexicalBlock(scope: !31, file: !1, line: 50, column: 11)
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!31 = distinct !DILexicalBlock(scope: !32, file: !1, line: 48, column: 5)
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!32 = distinct !DILexicalBlock(scope: !6, file: !1, line: 47, column: 7)
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!33 = !DILocation(line: 51, column: 2, scope: !30)
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!34 = !DILocation(line: 27, column: 5, scope: !6)
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!35 = !DILocation(line: 63, column: 22, scope: !36)
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!36 = distinct !DILexicalBlock(scope: !6, file: !1, line: 62, column: 7)
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