forked from OSchip/llvm-project
80 lines
4.2 KiB
LLVM
80 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -reassociate -S -o - | FileCheck %s
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; After reassociation m1 and m2 aren't calculated as m1=c*a and m2=c*b any longer.
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; So let's verify that the dbg.value nodes for m1 and m3 are invalidated.
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source_filename = "reassociate_dbgvalue_discard.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local i32 @test1(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #0 !dbg !7 {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 undef, metadata !16, metadata !DIExpression()), !dbg !20
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 undef, metadata !17, metadata !DIExpression()), !dbg !21
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; CHECK-NEXT: [[M1:%.*]] = mul i32 [[D:%.*]], [[C:%.*]], !dbg !22
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; CHECK-NEXT: [[M3:%.*]] = mul i32 [[M1]], [[A:%.*]], !dbg !23
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[M3]], metadata !18, metadata !DIExpression()), !dbg !24
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; CHECK-NEXT: [[M2:%.*]] = mul i32 [[D]], [[C]], !dbg !25
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; CHECK-NEXT: [[M4:%.*]] = mul i32 [[M2]], [[B:%.*]], !dbg !26
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[M4]], metadata !19, metadata !DIExpression()), !dbg !27
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; CHECK-NEXT: [[RES:%.*]] = xor i32 [[M3]], [[M4]]
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; CHECK-NEXT: ret i32 [[RES]], !dbg !28
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;
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entry:
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%m1 = mul i32 %c, %a, !dbg !24
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call void @llvm.dbg.value(metadata i32 %m1, metadata !16, metadata !DIExpression()), !dbg !25
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%m2 = mul i32 %c, %b, !dbg !26
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call void @llvm.dbg.value(metadata i32 %m2, metadata !17, metadata !DIExpression()), !dbg !27
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%m3 = mul i32 %m1, %d, !dbg !28
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call void @llvm.dbg.value(metadata i32 %m3, metadata !18, metadata !DIExpression()), !dbg !29
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%m4 = mul i32 %m2, %d, !dbg !30
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call void @llvm.dbg.value(metadata i32 %m4, metadata !19, metadata !DIExpression()), !dbg !31
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%res = xor i32 %m3, %m4
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ret i32 %res, !dbg !32
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind readnone uwtable }
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attributes #1 = { nounwind readnone speculatable }
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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 7.0.0 (trunk 330596) (llvm/trunk 330594)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "reassociate_dbgvalue_discard.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 4}
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!6 = !{!"clang version 7.0.0 (trunk 330596) (llvm/trunk 330594)"}
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!7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10, !10, !10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12, !13, !14, !15, !16, !17, !18, !19}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10)
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!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 3, type: !10)
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!14 = !DILocalVariable(name: "c", arg: 3, scope: !7, file: !1, line: 3, type: !10)
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!15 = !DILocalVariable(name: "d", arg: 4, scope: !7, file: !1, line: 3, type: !10)
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!16 = !DILocalVariable(name: "t1", scope: !7, file: !1, line: 4, type: !10)
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!17 = !DILocalVariable(name: "t2", scope: !7, file: !1, line: 5, type: !10)
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!18 = !DILocalVariable(name: "t3", scope: !7, file: !1, line: 6, type: !10)
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!19 = !DILocalVariable(name: "t4", scope: !7, file: !1, line: 7, type: !10)
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!20 = !DILocation(line: 3, column: 15, scope: !7)
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!21 = !DILocation(line: 3, column: 22, scope: !7)
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!22 = !DILocation(line: 3, column: 29, scope: !7)
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!23 = !DILocation(line: 3, column: 36, scope: !7)
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!24 = !DILocation(line: 4, column: 14, scope: !7)
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!25 = !DILocation(line: 4, column: 7, scope: !7)
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!26 = !DILocation(line: 5, column: 14, scope: !7)
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!27 = !DILocation(line: 5, column: 7, scope: !7)
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!28 = !DILocation(line: 6, column: 15, scope: !7)
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!29 = !DILocation(line: 6, column: 7, scope: !7)
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!30 = !DILocation(line: 7, column: 15, scope: !7)
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!31 = !DILocation(line: 7, column: 7, scope: !7)
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!32 = !DILocation(line: 8, column: 3, scope: !7)
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