1; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
2
3; C/C++ code for tests
4; void test(int *A, int Length) {
5; #pragma clang loop vectorize(enable) interleave(enable)
6;   for (int i = 0; i < Length; i++) {
7;     A[i] = i;
8;     if (A[i] > Length)
9;       break;
10;   }
11; }
12
13; void test_disabled(int *A, int Length) {
14; #pragma clang loop vectorize(disable) interleave(disable)
15;   for (int i = 0; i < Length; i++)
16;     A[i] = i;
17; }
18
19; void test_array_bounds(int *A, int *B, int Length) {
20; #pragma clang loop vectorize(enable)
21;   for (int i = 0; i < Length; i++)
22;     A[i] = A[B[i]];
23; }
24
25; File, line, and column should match those specified in the metadata
26; CHECK: remark: source.cpp:4:5: loop not vectorized: could not determine number of loop iterations
27; CHECK: remark: source.cpp:4:5: loop not vectorized: use -Rpass-analysis=loop-vectorize for more info
28; CHECK: remark: source.cpp:13:5: loop not vectorized: vector width and interleave count are explicitly set to 1
29; CHECK: remark: source.cpp:19:5: loop not vectorized: cannot identify array bounds
30; CHECK: remark: source.cpp:19:5: loop not vectorized: use -Rpass-analysis=loop-vectorize for more info
31; CHECK: warning: source.cpp:19:5: loop not vectorized: failed explicitly specified loop vectorization
32
33; CHECK: _Z4testPii
34; CHECK-NOT: x i32>
35; CHECK: ret
36
37; CHECK: _Z13test_disabledPii
38; CHECK-NOT: x i32>
39; CHECK: ret
40
41; CHECK: _Z17test_array_boundsPiS_i
42; CHECK-NOT: x i32>
43; CHECK: ret
44
45target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
46
47; Function Attrs: nounwind optsize ssp uwtable
48define void @_Z4testPii(i32* nocapture %A, i32 %Length) #0 {
49entry:
50  %cmp10 = icmp sgt i32 %Length, 0, !dbg !12
51  br i1 %cmp10, label %for.body, label %for.end, !dbg !12, !llvm.loop !14
52
53for.body:                                         ; preds = %entry, %for.body
54  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
55  %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !16
56  %0 = trunc i64 %indvars.iv to i32, !dbg !16
57  store i32 %0, i32* %arrayidx, align 4, !dbg !16, !tbaa !18
58  %cmp3 = icmp sle i32 %0, %Length, !dbg !22
59  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !12
60  %1 = trunc i64 %indvars.iv.next to i32
61  %cmp = icmp slt i32 %1, %Length, !dbg !12
62  %or.cond = and i1 %cmp3, %cmp, !dbg !22
63  br i1 %or.cond, label %for.body, label %for.end, !dbg !22
64
65for.end:                                          ; preds = %for.body, %entry
66  ret void, !dbg !24
67}
68
69; Function Attrs: nounwind optsize ssp uwtable
70define void @_Z13test_disabledPii(i32* nocapture %A, i32 %Length) #0 {
71entry:
72  %cmp4 = icmp sgt i32 %Length, 0, !dbg !25
73  br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27
74
75for.body:                                         ; preds = %entry, %for.body
76  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
77  %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !30
78  %0 = trunc i64 %indvars.iv to i32, !dbg !30
79  store i32 %0, i32* %arrayidx, align 4, !dbg !30, !tbaa !18
80  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !25
81  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !25
82  %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !25
83  br i1 %exitcond, label %for.end, label %for.body, !dbg !25, !llvm.loop !27
84
85for.end:                                          ; preds = %for.body, %entry
86  ret void, !dbg !31
87}
88
89; Function Attrs: nounwind optsize ssp uwtable
90define void @_Z17test_array_boundsPiS_i(i32* nocapture %A, i32* nocapture readonly %B, i32 %Length) #0 {
91entry:
92  %cmp9 = icmp sgt i32 %Length, 0, !dbg !32
93  br i1 %cmp9, label %for.body.preheader, label %for.end, !dbg !32, !llvm.loop !34
94
95for.body.preheader:                               ; preds = %entry
96  br label %for.body, !dbg !35
97
98for.body:                                         ; preds = %for.body.preheader, %for.body
99  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
100  %arrayidx = getelementptr inbounds i32* %B, i64 %indvars.iv, !dbg !35
101  %0 = load i32* %arrayidx, align 4, !dbg !35, !tbaa !18
102  %idxprom1 = sext i32 %0 to i64, !dbg !35
103  %arrayidx2 = getelementptr inbounds i32* %A, i64 %idxprom1, !dbg !35
104  %1 = load i32* %arrayidx2, align 4, !dbg !35, !tbaa !18
105  %arrayidx4 = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !35
106  store i32 %1, i32* %arrayidx4, align 4, !dbg !35, !tbaa !18
107  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !32
108  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !32
109  %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !32
110  br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !32, !llvm.loop !34
111
112for.end.loopexit:                                 ; preds = %for.body
113  br label %for.end
114
115for.end:                                          ; preds = %for.end.loopexit, %entry
116  ret void, !dbg !36
117}
118
119attributes #0 = { nounwind }
120
121!llvm.dbg.cu = !{!0}
122!llvm.module.flags = !{!9, !10}
123!llvm.ident = !{!11}
124
125!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2}
126!1 = metadata !{metadata !"source.cpp", metadata !"."}
127!2 = metadata !{}
128!3 = metadata !{metadata !4, metadata !7, metadata !8}
129!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"test", metadata !"test", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*, i32)* @_Z4testPii, null, null, metadata !2, i32 1}
130!5 = metadata !{i32 786473, metadata !1}
131!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null}
132!7 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"test_disabled", metadata !"test_disabled", metadata !"", i32 10, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*, i32)* @_Z13test_disabledPii, null, null, metadata !2, i32 10}
133!8 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"test_array_bounds", metadata !"test_array_bounds", metadata !"", i32 16, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*, i32*, i32)* @_Z17test_array_boundsPiS_i, null, null, metadata !2, i32 16}
134!9 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
135!10 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
136!11 = metadata !{metadata !"clang version 3.5.0"}
137!12 = metadata !{i32 3, i32 8, metadata !13, null}
138!13 = metadata !{i32 786443, metadata !1, metadata !4, i32 3, i32 3, i32 0, i32 0}
139!14 = metadata !{metadata !14, metadata !15, metadata !15}
140!15 = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
141!16 = metadata !{i32 4, i32 5, metadata !17, null}
142!17 = metadata !{i32 786443, metadata !1, metadata !13, i32 3, i32 36, i32 0, i32 1}
143!18 = metadata !{metadata !19, metadata !19, i64 0}
144!19 = metadata !{metadata !"int", metadata !20, i64 0}
145!20 = metadata !{metadata !"omnipotent char", metadata !21, i64 0}
146!21 = metadata !{metadata !"Simple C/C++ TBAA"}
147!22 = metadata !{i32 5, i32 9, metadata !23, null}
148!23 = metadata !{i32 786443, metadata !1, metadata !17, i32 5, i32 9, i32 0, i32 2}
149!24 = metadata !{i32 8, i32 1, metadata !4, null}
150!25 = metadata !{i32 12, i32 8, metadata !26, null}
151!26 = metadata !{i32 786443, metadata !1, metadata !7, i32 12, i32 3, i32 0, i32 3}
152!27 = metadata !{metadata !27, metadata !28, metadata !29}
153!28 = metadata !{metadata !"llvm.loop.interleave.count", i32 1}
154!29 = metadata !{metadata !"llvm.loop.vectorize.width", i32 1}
155!30 = metadata !{i32 13, i32 5, metadata !26, null}
156!31 = metadata !{i32 14, i32 1, metadata !7, null}
157!32 = metadata !{i32 18, i32 8, metadata !33, null}
158!33 = metadata !{i32 786443, metadata !1, metadata !8, i32 18, i32 3, i32 0, i32 4}
159!34 = metadata !{metadata !34, metadata !15}
160!35 = metadata !{i32 19, i32 5, metadata !33, null}
161!36 = metadata !{i32 20, i32 1, metadata !8, null}
162