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llvm-project/llvm/test/Transforms/LoopRotate/dbg-value-duplicates.ll

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loop-rotate: eliminate duplicate debug intrinsics after splicing. Fixes part of PR35113. This reapplies r317105 with an additional check for isa<Instruction> as found by the bots. llvm-svn: 317120
2017-11-02 04:43:30 +08:00
; RUN: opt -S -loop-rotate < %s | FileCheck %s
Update MemorySSA in LoopRotate. Summary: Teach LoopRotate to preserve MemorySSA. Enable tests for correctness, dependency disabled by default. Subscribers: sanjoy, jlebar, Prazek, george.burgess.iv, llvm-commits Differential Revision: https://reviews.llvm.org/D51718 llvm-svn: 345216
2018-10-25 06:46:45 +08:00
; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
loop-rotate: eliminate duplicate debug intrinsics after splicing. Fixes part of PR35113. This reapplies r317105 with an additional check for isa<Instruction> as found by the bots. llvm-svn: 317120
2017-11-02 04:43:30 +08:00
source_filename = "/tmp/loop.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.13.0"
; Function Attrs: nounwind ssp uwtable
define void @f(float* %input, i64 %n, i64 %s) local_unnamed_addr #0 !dbg !8 {
entry:
call void @llvm.dbg.value(metadata float* %input, metadata !15, metadata !DIExpression()), !dbg !20
call void @llvm.dbg.value(metadata i64 %n, metadata !16, metadata !DIExpression()), !dbg !21
call void @llvm.dbg.value(metadata i64 %s, metadata !17, metadata !DIExpression()), !dbg !22
call void @llvm.dbg.value(metadata i64 0, metadata !18, metadata !DIExpression()), !dbg !23
loop-rotate: avoid duplicating dbg.value intrinsics in the entry block. This fixes the second half of PR35113. This reapplies r317106 without modifications. llvm-svn: 317121
2017-11-02 04:53:22 +08:00
; CHECK: call void @llvm.dbg.value(metadata i64 0, metadata !18, metadata !DIExpression()), !dbg !23
; CHECK-NOT: call void @llvm.dbg.value(metadata i64 0, metadata !18, metadata !DIExpression()), !dbg !23
loop-rotate: eliminate duplicate debug intrinsics after splicing. Fixes part of PR35113. This reapplies r317105 with an additional check for isa<Instruction> as found by the bots. llvm-svn: 317120
2017-11-02 04:43:30 +08:00
br label %for.cond, !dbg !24
for.cond: ; preds = %for.body, %entry
; CHECK: %i.02 = phi i64 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
%i.0 = phi i64 [ 0, %entry ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i64 %i.0, metadata !18, metadata !DIExpression()), !dbg !23
%cmp = icmp slt i64 %i.0, %n, !dbg !25
br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !27
for.cond.cleanup: ; preds = %for.cond
ret void, !dbg !28
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds float, float* %input, i64 %i.0, !dbg !29
%0 = load float, float* %arrayidx, align 4, !dbg !29, !tbaa !30
call void @bar(float %0), !dbg !34
%add = add nsw i64 %i.0, %s, !dbg !35
call void @llvm.dbg.value(metadata i64 %add, metadata !18, metadata !DIExpression()), !dbg !23
; CHECK: call void @llvm.dbg.value(metadata i64 %add, metadata !18, metadata !DIExpression()), !dbg !23
; CHECK-NOT: call void @llvm.dbg.value(metadata i64 %add, metadata !18, metadata !DIExpression()), !dbg !23
br label %for.cond, !dbg !36, !llvm.loop !37
}
declare void @bar(float) local_unnamed_addr #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
attributes #0 = { nounwind ssp uwtable }
attributes #2 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 316689) (llvm/trunk 316685)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "/tmp/loop.c", directory: "/Data/llvm")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 7, !"PIC Level", i32 2}
!7 = !{!"clang version 6.0.0 (trunk 316689) (llvm/trunk 316685)"}
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !14)
loop-rotate: eliminate duplicate debug intrinsics after splicing. Fixes part of PR35113. This reapplies r317105 with an additional check for isa<Instruction> as found by the bots. llvm-svn: 317120
2017-11-02 04:43:30 +08:00
!9 = !DISubroutineType(types: !10)
!10 = !{null, !11, !13, !13}
!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
!12 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!13 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
!14 = !{!15, !16, !17, !18}
!15 = !DILocalVariable(name: "input", arg: 1, scope: !8, file: !1, line: 2, type: !11)
!16 = !DILocalVariable(name: "n", arg: 2, scope: !8, file: !1, line: 2, type: !13)
!17 = !DILocalVariable(name: "s", arg: 3, scope: !8, file: !1, line: 2, type: !13)
!18 = !DILocalVariable(name: "i", scope: !19, file: !1, line: 3, type: !13)
!19 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 3)
!20 = !DILocation(line: 2, column: 15, scope: !8)
!21 = !DILocation(line: 2, column: 32, scope: !8)
!22 = !DILocation(line: 2, column: 45, scope: !8)
!23 = !DILocation(line: 3, column: 18, scope: !19)
!24 = !DILocation(line: 3, column: 8, scope: !19)
!25 = !DILocation(line: 3, column: 26, scope: !26)
!26 = distinct !DILexicalBlock(scope: !19, file: !1, line: 3, column: 3)
!27 = !DILocation(line: 3, column: 3, scope: !19)
!28 = !DILocation(line: 5, column: 1, scope: !8)
!29 = !DILocation(line: 4, column: 9, scope: !26)
!30 = !{!31, !31, i64 0}
!31 = !{!"float", !32, i64 0}
!32 = !{!"omnipotent char", !33, i64 0}
!33 = !{!"Simple C/C++ TBAA"}
!34 = !DILocation(line: 4, column: 5, scope: !26)
!35 = !DILocation(line: 3, column: 31, scope: !26)
!36 = !DILocation(line: 3, column: 3, scope: !26)
!37 = distinct !{!37, !27, !38}
!38 = !DILocation(line: 4, column: 17, scope: !19)