1; This test checks that the !llvm.loop metadata has been updated after inlining
2; so that the start and end locations refer to the inlined DILocations.
3
4; RUN: opt -inline -always-inline %s -S 2>&1 | FileCheck %s
5; CHECK: br i1 %{{.*}}, label %middle.block.i, label %vector.body.i, !dbg !{{[0-9]+}}, !llvm.loop [[VECTOR:![0-9]+]]
6; CHECK: br i1 %{{.*}}, label %for.cond.cleanup.loopexit.i, label %for.body.i, !dbg !{{[0-9]+}}, !llvm.loop [[SCALAR:![0-9]+]]
7; CHECK-DAG: [[VECTOR]] = distinct !{[[VECTOR]], [[START:![0-9]+]], [[END:![0-9]+]], [[IS_VECTORIZED:![0-9]+]]}
8; CHECK-DAG: [[SCALAR]] = distinct !{[[SCALAR]], [[START]], [[END]], [[NO_UNROLL:![0-9]+]], [[IS_VECTORIZED]]}
9; CHECK-DAG: [[IS_VECTORIZED]] = !{!"llvm.loop.isvectorized", i32 1}
10; CHECK-DAG: [[NO_UNROLL]] = !{!"llvm.loop.unroll.runtime.disable"}
11
12; This IR can be generated by running:
13;   clang -emit-llvm -S -gmlt -O2 inlined.cpp -o - -mllvm -opt-bisect-limit=53 |\
14;   opt -loop-vectorize
15;
16; Where inlined.cpp contains:
17; extern int *Array;
18; static int bar(unsigned x)
19; {
20;   int Ret = 0;
21;   for (unsigned i = 0; i < x; ++i)
22;   {
23;     Ret += Array[i] * i;
24;   }
25;   return Ret;
26; }
27;
28; int foo(unsigned x)
29; {
30;   int Bar = bar(x);
31;   return Bar;
32; }
33
34@"?Array@@3PEAHEA" = external dso_local local_unnamed_addr global i32*, align 8
35
36define dso_local i32 @"?foo@@YAHI@Z"(i32 %x) local_unnamed_addr !dbg !8 {
37entry:
38  %call = call fastcc i32 @"?bar@@YAHI@Z"(i32 %x), !dbg !10
39  ret i32 %call, !dbg !11
40}
41
42define internal fastcc i32 @"?bar@@YAHI@Z"(i32 %x) unnamed_addr !dbg !12 {
43entry:
44  %cmp7 = icmp eq i32 %x, 0, !dbg !13
45  br i1 %cmp7, label %for.cond.cleanup, label %for.body.lr.ph, !dbg !13
46
47for.body.lr.ph:                                   ; preds = %entry
48  %0 = load i32*, i32** @"?Array@@3PEAHEA", align 8, !dbg !14, !tbaa !15
49  %wide.trip.count = zext i32 %x to i64, !dbg !14
50  %min.iters.check = icmp ult i64 %wide.trip.count, 8, !dbg !13
51  br i1 %min.iters.check, label %scalar.ph, label %vector.ph, !dbg !13
52
53vector.ph:                                        ; preds = %for.body.lr.ph
54  %n.mod.vf = urem i64 %wide.trip.count, 8, !dbg !13
55  %n.vec = sub i64 %wide.trip.count, %n.mod.vf, !dbg !13
56  br label %vector.body, !dbg !13
57
58vector.body:                                      ; preds = %vector.body, %vector.ph
59  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ], !dbg !13
60  %vec.ind = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
61  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %17, %vector.body ]
62  %vec.phi2 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %18, %vector.body ]
63  %vec.ind4 = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next7, %vector.body ], !dbg !19
64  %step.add = add <4 x i64> %vec.ind, <i64 4, i64 4, i64 4, i64 4>
65  %1 = add i64 %index, 0, !dbg !13
66  %2 = add i64 %index, 1, !dbg !13
67  %3 = add i64 %index, 2, !dbg !13
68  %4 = add i64 %index, 3, !dbg !13
69  %5 = add i64 %index, 4, !dbg !13
70  %6 = add i64 %index, 5, !dbg !13
71  %7 = add i64 %index, 6, !dbg !13
72  %8 = add i64 %index, 7, !dbg !13
73  %9 = getelementptr inbounds i32, i32* %0, i64 %1, !dbg !19
74  %10 = getelementptr inbounds i32, i32* %0, i64 %5, !dbg !19
75  %11 = getelementptr inbounds i32, i32* %9, i32 0, !dbg !19
76  %12 = bitcast i32* %11 to <4 x i32>*, !dbg !19
77  %wide.load = load <4 x i32>, <4 x i32>* %12, align 4, !dbg !19, !tbaa !20
78  %13 = getelementptr inbounds i32, i32* %9, i32 4, !dbg !19
79  %14 = bitcast i32* %13 to <4 x i32>*, !dbg !19
80  %wide.load3 = load <4 x i32>, <4 x i32>* %14, align 4, !dbg !19, !tbaa !20
81  %step.add5 = add <4 x i32> %vec.ind4, <i32 4, i32 4, i32 4, i32 4>, !dbg !19
82  %15 = mul <4 x i32> %wide.load, %vec.ind4, !dbg !19
83  %16 = mul <4 x i32> %wide.load3, %step.add5, !dbg !19
84  %17 = add <4 x i32> %15, %vec.phi, !dbg !19
85  %18 = add <4 x i32> %16, %vec.phi2, !dbg !19
86  %index.next = add i64 %index, 8, !dbg !13
87  %vec.ind.next = add <4 x i64> %step.add, <i64 4, i64 4, i64 4, i64 4>
88  %vec.ind.next7 = add <4 x i32> %step.add5, <i32 4, i32 4, i32 4, i32 4>, !dbg !19
89  %19 = icmp eq i64 %index.next, %n.vec, !dbg !13
90  br i1 %19, label %middle.block, label %vector.body, !dbg !13, !llvm.loop !22
91
92middle.block:                                     ; preds = %vector.body
93  %bin.rdx = add <4 x i32> %18, %17, !dbg !19
94  %rdx.shuf = shufflevector <4 x i32> %bin.rdx, <4 x i32> poison, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>, !dbg !19
95  %bin.rdx8 = add <4 x i32> %bin.rdx, %rdx.shuf, !dbg !19
96  %rdx.shuf9 = shufflevector <4 x i32> %bin.rdx8, <4 x i32> poison, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>, !dbg !19
97  %bin.rdx10 = add <4 x i32> %bin.rdx8, %rdx.shuf9, !dbg !19
98  %20 = extractelement <4 x i32> %bin.rdx10, i32 0, !dbg !19
99  %cmp.n = icmp eq i64 %wide.trip.count, %n.vec, !dbg !13
100  br i1 %cmp.n, label %for.cond.cleanup.loopexit, label %scalar.ph, !dbg !13
101
102scalar.ph:                                        ; preds = %middle.block, %for.body.lr.ph
103  %bc.resume.val = phi i64 [ %n.vec, %middle.block ], [ 0, %for.body.lr.ph ]
104  %bc.merge.rdx = phi i32 [ 0, %for.body.lr.ph ], [ %20, %middle.block ]
105  br label %for.body, !dbg !13
106
107for.cond.cleanup.loopexit:                        ; preds = %middle.block, %for.body
108  %add.lcssa = phi i32 [ %add, %for.body ], [ %20, %middle.block ], !dbg !19
109  br label %for.cond.cleanup, !dbg !25
110
111for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
112  %Ret.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ], !dbg !14
113  ret i32 %Ret.0.lcssa, !dbg !25
114
115for.body:                                         ; preds = %for.body, %scalar.ph
116  %indvars.iv = phi i64 [ %bc.resume.val, %scalar.ph ], [ %indvars.iv.next, %for.body ]
117  %Ret.08 = phi i32 [ %bc.merge.rdx, %scalar.ph ], [ %add, %for.body ]
118  %arrayidx = getelementptr inbounds i32, i32* %0, i64 %indvars.iv, !dbg !19
119  %21 = load i32, i32* %arrayidx, align 4, !dbg !19, !tbaa !20
120  %22 = trunc i64 %indvars.iv to i32, !dbg !19
121  %mul = mul i32 %21, %22, !dbg !19
122  %add = add i32 %mul, %Ret.08, !dbg !19
123  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !13
124  %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !13
125  br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !13, !llvm.loop !26
126}
127
128!llvm.dbg.cu = !{!0}
129!llvm.module.flags = !{!3, !4, !5, !6}
130!llvm.ident = !{!7}
131
132!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git b1e28d9b6a16380ccf1456fe0695f639364407a9)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)
133!1 = !DIFile(filename: "inlined.cpp", directory: "")
134!2 = !{}
135!3 = !{i32 2, !"CodeView", i32 1}
136!4 = !{i32 2, !"Debug Info Version", i32 3}
137!5 = !{i32 1, !"wchar_size", i32 2}
138!6 = !{i32 7, !"PIC Level", i32 2}
139!7 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git b1e28d9b6a16380ccf1456fe0695f639364407a9)"}
140!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 13, type: !9, scopeLine: 14, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
141!9 = !DISubroutineType(types: !2)
142!10 = !DILocation(line: 15, scope: !8)
143!11 = !DILocation(line: 16, scope: !8)
144!12 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !9, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
145!13 = !DILocation(line: 6, scope: !12)
146!14 = !DILocation(line: 0, scope: !12)
147!15 = !{!16, !16, i64 0}
148!16 = !{!"any pointer", !17, i64 0}
149!17 = !{!"omnipotent char", !18, i64 0}
150!18 = !{!"Simple C++ TBAA"}
151!19 = !DILocation(line: 8, scope: !12)
152!20 = !{!21, !21, i64 0}
153!21 = !{!"int", !17, i64 0}
154!22 = distinct !{!22, !13, !23, !24}
155!23 = !DILocation(line: 9, scope: !12)
156!24 = !{!"llvm.loop.isvectorized", i32 1}
157!25 = !DILocation(line: 10, scope: !12)
158!26 = distinct !{!26, !13, !23, !27, !24}
159!27 = !{!"llvm.loop.unroll.runtime.disable"}
160