83 lines
3.9 KiB
LLVM
83 lines
3.9 KiB
LLVM
; RUN: opt -S -loop-rotate < %s | FileCheck %s
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; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
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;CHECK-LABEL: func
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;CHECK-LABEL: entry
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %a
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 1, metadata ![[I_VAR:[0-9]+]], metadata !DIExpression())
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;CHECK-LABEL: for.body:
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;CHECK-NEXT: [[I:%.*]] = phi i32 [ 1, %entry ], [ %inc, %for.body ]
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 [[I]], metadata ![[I_VAR]], metadata !DIExpression())
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; CHECK: ![[I_VAR]] = !DILocalVariable(name: "i",{{.*}})
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; Function Attrs: noinline nounwind
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define void @func(i32 %a) local_unnamed_addr #0 !dbg !6 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %a, metadata !10, metadata !11), !dbg !12
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tail call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !11), !dbg !15
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br label %for.cond, !dbg !16
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for.cond: ; preds = %for.body, %entry
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%i.0 = phi i32 [ 1, %entry ], [ %inc, %for.body ]
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tail call void @llvm.dbg.value(metadata i32 %i.0, metadata !13, metadata !11), !dbg !15
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%cmp = icmp slt i32 %i.0, 10, !dbg !17
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br i1 %cmp, label %for.body, label %for.end, !dbg !20
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for.body: ; preds = %for.cond
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%add = add nsw i32 %i.0, %a, !dbg !22
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%call = tail call i32 @func2(i32 %i.0, i32 %add) #3, !dbg !24
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%inc = add nsw i32 %i.0, 1, !dbg !25
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tail call void @llvm.dbg.value(metadata i32 %inc, metadata !13, metadata !11), !dbg !15
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br label %for.cond, !dbg !27, !llvm.loop !28
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for.end: ; preds = %for.cond
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ret void, !dbg !31
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}
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declare i32 @func2(i32, i32) local_unnamed_addr
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { noinline nounwind }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "debug-phi.c", directory: "/work/projects/src/tests/debug")
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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 = !{!"clang version 5.0.0"}
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!6 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !1, line: 2, type: !9)
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!11 = !DIExpression()
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!12 = !DILocation(line: 2, column: 15, scope: !6)
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!13 = !DILocalVariable(name: "i", scope: !14, file: !1, line: 3, type: !9)
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!14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 3)
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!15 = !DILocation(line: 3, column: 11, scope: !14)
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!16 = !DILocation(line: 3, column: 7, scope: !14)
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!17 = !DILocation(line: 3, column: 20, scope: !18)
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!18 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 1)
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!19 = distinct !DILexicalBlock(scope: !14, file: !1, line: 3, column: 3)
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!20 = !DILocation(line: 3, column: 3, scope: !21)
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!21 = !DILexicalBlockFile(scope: !14, file: !1, discriminator: 1)
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!22 = !DILocation(line: 4, column: 15, scope: !23)
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!23 = distinct !DILexicalBlock(scope: !19, file: !1, line: 3, column: 31)
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!24 = !DILocation(line: 4, column: 5, scope: !23)
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!25 = !DILocation(line: 3, column: 27, scope: !26)
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!26 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 2)
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!27 = !DILocation(line: 3, column: 3, scope: !26)
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!28 = distinct !{!28, !29, !30}
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!29 = !DILocation(line: 3, column: 3, scope: !14)
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!30 = !DILocation(line: 5, column: 3, scope: !14)
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!31 = !DILocation(line: 6, column: 1, scope: !6)
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