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1; RUN: opt -S -loop-rotate < %s | FileCheck %s
2
3;CHECK-LABEL: func
4;CHECK-LABEL: entry
5;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %a
6;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 1, metadata ![[I_VAR:[0-9]+]], metadata !DIExpression())
7;CHECK-LABEL: for.body:
8;CHECK-NEXT: [[I:%.*]] = phi i32 [ 1, %entry ], [ %inc, %for.body ]
9;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 [[I]], metadata ![[I_VAR]], metadata !DIExpression())
10
11; CHECK: ![[I_VAR]] = !DILocalVariable(name: "i",{{.*}})
12
13; Function Attrs: noinline nounwind
14define void @func(i32 %a) local_unnamed_addr #0 !dbg !6 {
15entry:
16  tail call void @llvm.dbg.value(metadata i32 %a, metadata !10, metadata !11), !dbg !12
17  tail call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !11), !dbg !15
18  br label %for.cond, !dbg !16
19
20for.cond:                                         ; preds = %for.body, %entry
21  %i.0 = phi i32 [ 1, %entry ], [ %inc, %for.body ]
22  tail call void @llvm.dbg.value(metadata i32 %i.0, metadata !13, metadata !11), !dbg !15
23  %cmp = icmp slt i32 %i.0, 10, !dbg !17
24  br i1 %cmp, label %for.body, label %for.end, !dbg !20
25
26for.body:                                         ; preds = %for.cond
27  %add = add nsw i32 %i.0, %a, !dbg !22
28  %call = tail call i32 @func2(i32 %i.0, i32 %add) #3, !dbg !24
29  %inc = add nsw i32 %i.0, 1, !dbg !25
30  tail call void @llvm.dbg.value(metadata i32 %inc, metadata !13, metadata !11), !dbg !15
31  br label %for.cond, !dbg !27, !llvm.loop !28
32
33for.end:                                          ; preds = %for.cond
34  ret void, !dbg !31
35}
36
37declare i32 @func2(i32, i32) local_unnamed_addr
38
39; Function Attrs: nounwind readnone
40declare void @llvm.dbg.value(metadata, metadata, metadata) #2
41
42attributes #0 = { noinline nounwind }
43attributes #2 = { nounwind readnone }
44attributes #3 = { nounwind }
45
46!llvm.dbg.cu = !{!0}
47!llvm.module.flags = !{!3, !4}
48!llvm.ident = !{!5}
49
50!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (http://llvm.org/git/clang.git 0f3ed908c1f13f83da4b240f7595eb8d05e0a754) (http://llvm.org/git/llvm.git 8e270f5a6b8ceb0f3ac3ef1ffb83c5e29b44ae68)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
51!1 = !DIFile(filename: "debug-phi.c", directory: "/work/projects/src/tests/debug")
52!2 = !{}
53!3 = !{i32 2, !"Dwarf Version", i32 4}
54!4 = !{i32 2, !"Debug Info Version", i32 3}
55!5 = !{!"clang version 5.0.0 (http://llvm.org/git/clang.git 0f3ed908c1f13f83da4b240f7595eb8d05e0a754) (http://llvm.org/git/llvm.git 8e270f5a6b8ceb0f3ac3ef1ffb83c5e29b44ae68)"}
56!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)
57!7 = !DISubroutineType(types: !8)
58!8 = !{null, !9}
59!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
60!10 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !1, line: 2, type: !9)
61!11 = !DIExpression()
62!12 = !DILocation(line: 2, column: 15, scope: !6)
63!13 = !DILocalVariable(name: "i", scope: !14, file: !1, line: 3, type: !9)
64!14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 3)
65!15 = !DILocation(line: 3, column: 11, scope: !14)
66!16 = !DILocation(line: 3, column: 7, scope: !14)
67!17 = !DILocation(line: 3, column: 20, scope: !18)
68!18 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 1)
69!19 = distinct !DILexicalBlock(scope: !14, file: !1, line: 3, column: 3)
70!20 = !DILocation(line: 3, column: 3, scope: !21)
71!21 = !DILexicalBlockFile(scope: !14, file: !1, discriminator: 1)
72!22 = !DILocation(line: 4, column: 15, scope: !23)
73!23 = distinct !DILexicalBlock(scope: !19, file: !1, line: 3, column: 31)
74!24 = !DILocation(line: 4, column: 5, scope: !23)
75!25 = !DILocation(line: 3, column: 27, scope: !26)
76!26 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 2)
77!27 = !DILocation(line: 3, column: 3, scope: !26)
78!28 = distinct !{!28, !29, !30}
79!29 = !DILocation(line: 3, column: 3, scope: !14)
80!30 = !DILocation(line: 5, column: 3, scope: !14)
81!31 = !DILocation(line: 6, column: 1, scope: !6)
82