75 lines
3.9 KiB
LLVM
75 lines
3.9 KiB
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
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; Test that LSR preserves debug-info for induction variables.
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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 dso_local void @foo(i8* nocapture %p) local_unnamed_addr !dbg !7 {
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; CHECK-LABEL: @foo(
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entry:
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call void @llvm.dbg.value(metadata i8* %p, metadata !13, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i8 0, metadata !14, metadata !DIExpression()), !dbg !17
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br label %for.body, !dbg !18
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for.cond.cleanup: ; preds = %for.body
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ret void, !dbg !19
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for.body: ; preds = %entry, %for.body
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; CHECK-LABEL: for.body:
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%i.06 = phi i8 [ 0, %entry ], [ %inc, %for.body ]
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%p.addr.05 = phi i8* [ %p, %entry ], [ %add.ptr, %for.body ]
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call void @llvm.dbg.value(metadata i8 %i.06, metadata !14, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i8* %p.addr.05, metadata !13, metadata !DIExpression()), !dbg !16
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; CHECK-NOT: call void @llvm.dbg.value(metadata i8* undef
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; CHECK: call void @llvm.dbg.value(metadata i8* %lsr.iv, metadata ![[MID_p:[0-9]+]], metadata !DIExpression(DW_OP_constu, 3, DW_OP_minus, DW_OP_stack_value)), !dbg !16
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%add.ptr = getelementptr inbounds i8, i8* %p.addr.05, i64 3, !dbg !20
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call void @llvm.dbg.value(metadata i8* %add.ptr, metadata !13, metadata !DIExpression()), !dbg !16
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; CHECK-NOT: call void @llvm.dbg.value(metadata i8* undef
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; CHECK: call void @llvm.dbg.value(metadata i8* %lsr.iv, metadata ![[MID_p]], metadata !DIExpression()), !dbg !16
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store i8 %i.06, i8* %add.ptr, align 1, !dbg !23, !tbaa !24
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%inc = add nuw nsw i8 %i.06, 1, !dbg !27
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call void @llvm.dbg.value(metadata i8 %inc, metadata !14, metadata !DIExpression()), !dbg !17
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%exitcond.not = icmp eq i8 %inc, 32, !dbg !28
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !dbg !18, !llvm.loop !29
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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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 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "lsrdbg.c", 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 12.0.0"}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
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!11 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
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!12 = !{!13, !14}
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!13 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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; CHECK: ![[MID_p]] = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!14 = !DILocalVariable(name: "i", scope: !15, file: !1, line: 4, type: !11)
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!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)
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!16 = !DILocation(line: 0, scope: !7)
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!17 = !DILocation(line: 0, scope: !15)
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!18 = !DILocation(line: 4, column: 3, scope: !15)
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!19 = !DILocation(line: 8, column: 1, scope: !7)
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!20 = !DILocation(line: 5, column: 7, scope: !21)
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!21 = distinct !DILexicalBlock(scope: !22, file: !1, line: 4, column: 42)
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!22 = distinct !DILexicalBlock(scope: !15, file: !1, line: 4, column: 3)
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!23 = !DILocation(line: 6, column: 8, scope: !21)
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!24 = !{!25, !25, i64 0}
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!25 = !{!"omnipotent char", !26, i64 0}
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!26 = !{!"Simple C/C++ TBAA"}
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!27 = !DILocation(line: 4, column: 38, scope: !22)
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!28 = !DILocation(line: 4, column: 31, scope: !22)
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!29 = distinct !{!29, !18, !30, !31}
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!30 = !DILocation(line: 7, column: 3, scope: !15)
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!31 = !{!"llvm.loop.unroll.disable"}
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