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23c462a8b5
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun llvm-svn: 363757
91 lines
5.1 KiB
LLVM
91 lines
5.1 KiB
LLVM
; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -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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