forked from OSchip/llvm-project
85 lines
4.7 KiB
LLVM
85 lines
4.7 KiB
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
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; Test that LSR does not produce invalid debug info when a debug value is
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; salvaged during LSR by adding additional location operands, then becomes
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; undef, and finally recovered by SCEV salvaging.
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @_Z3fooiii(i32 %Result, i32 %Step, i32 %Last) local_unnamed_addr !dbg !7 {
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; CHECK-LABEL: @_Z3fooiii(
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entry:
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call void @llvm.dbg.value(metadata i32 %Result, metadata !12, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i32 %Step, metadata !13, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i32 %Last, metadata !14, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i32 0, metadata !16, metadata !DIExpression()), !dbg !17
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br label %do.body, !dbg !18
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do.body: ; preds = %do.body, %entry
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; CHECK-LABEL: do.body:
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%Result.addr.0 = phi i32 [ %Result, %entry ], [ %or, %do.body ]
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%Itr.0 = phi i32 [ 0, %entry ], [ %add, %do.body ], !dbg !17
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; CHECK-NOT: call void @llvm.dbg.value(metadata !DIArgList
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; CHECK: call void @llvm.dbg.value(metadata !DIArgList(i32 %lsr.iv, i32 %Step), metadata ![[VAR_ITR:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_minus, DW_OP_LLVM_arg, 1, DW_OP_div, DW_OP_LLVM_arg, 1, DW_OP_mul, DW_OP_stack_value))
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call void @llvm.dbg.value(metadata i32 %Itr.0, metadata !16, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i32 %Result.addr.0, metadata !12, metadata !DIExpression()), !dbg !17
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%add = add nsw i32 %Itr.0, %Step, !dbg !19
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call void @llvm.dbg.value(metadata i32 %add, metadata !16, metadata !DIExpression()), !dbg !17
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%call = tail call i32 @_Z3barv(), !dbg !21
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call void @llvm.dbg.value(metadata i32 %call, metadata !15, metadata !DIExpression()), !dbg !17
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%shl = shl i32 %call, %add, !dbg !22
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%or = or i32 %shl, %Result.addr.0, !dbg !23
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call void @llvm.dbg.value(metadata i32 %or, metadata !12, metadata !DIExpression()), !dbg !17
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%and = and i32 %call, %Last, !dbg !24
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%tobool.not = icmp eq i32 %and, 0, !dbg !25
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br i1 %tobool.not, label %do.end, label %do.body, !dbg !26, !llvm.loop !27
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do.end: ; preds = %do.body
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ret i32 %or, !dbg !30
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}
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declare !dbg !31 dso_local i32 @_Z3barv() local_unnamed_addr
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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; CHECK: ![[VAR_ITR]] = !DILocalVariable(name: "Itr"
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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_C_plus_plus_14, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{}
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!3 = !{i32 7, !"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 13.0.0"}
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!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooiii", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!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}
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!12 = !DILocalVariable(name: "Result", arg: 1, scope: !7, file: !1, line: 3, type: !10)
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!13 = !DILocalVariable(name: "Step", arg: 2, scope: !7, file: !1, line: 3, type: !10)
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!14 = !DILocalVariable(name: "Last", arg: 3, scope: !7, file: !1, line: 3, type: !10)
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!15 = !DILocalVariable(name: "Bar", scope: !7, file: !1, line: 4, type: !10)
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!16 = !DILocalVariable(name: "Itr", scope: !7, file: !1, line: 5, type: !10)
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!17 = !DILocation(line: 0, scope: !7)
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!18 = !DILocation(line: 6, column: 3, scope: !7)
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!19 = !DILocation(line: 7, column: 9, scope: !20)
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!20 = distinct !DILexicalBlock(scope: !7, file: !1, line: 6, column: 6)
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!21 = !DILocation(line: 8, column: 11, scope: !20)
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!22 = !DILocation(line: 9, column: 20, scope: !20)
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!23 = !DILocation(line: 9, column: 12, scope: !20)
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!24 = !DILocation(line: 10, column: 16, scope: !7)
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!25 = !DILocation(line: 10, column: 12, scope: !7)
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!26 = !DILocation(line: 10, column: 3, scope: !20)
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!27 = distinct !{!27, !18, !28, !29}
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!28 = !DILocation(line: 10, column: 22, scope: !7)
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!29 = !{!"llvm.loop.mustprogress"}
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!30 = !DILocation(line: 11, column: 3, scope: !7)
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!31 = !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !1, file: !1, line: 1, type: !32, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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!32 = !DISubroutineType(types: !33)
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!33 = !{!10}
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