1; RUN: opt < %s -loop-vectorize -S 2>&1 | FileCheck %s
2
3; Verify warning is generated when vectorization/ interleaving is explicitly specified and fails to occur.
4; CHECK: warning: no_array_bounds.cpp:5:5: loop not vectorized: failed explicitly specified loop vectorization
5; CHECK: warning: no_array_bounds.cpp:10:5: loop not interleaved: failed explicitly specified loop interleaving
6
7;  #pragma clang loop vectorize(enable)
8;  for (int i = 0; i < number; i++) {
9;    A[B[i]]++;
10;  }
11
12;  #pragma clang loop vectorize(disable) interleave(enable)
13;  for (int i = 0; i < number; i++) {
14;    B[A[i]]++;
15;  }
16
17target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
18
19; Function Attrs: nounwind ssp uwtable
20define void @_Z4testPiS_i(i32* nocapture %A, i32* nocapture %B, i32 %number) #0 {
21entry:
22  %cmp25 = icmp sgt i32 %number, 0, !dbg !10
23  br i1 %cmp25, label %for.body.preheader, label %for.end15, !dbg !10, !llvm.loop !12
24
25for.body.preheader:                               ; preds = %entry
26  br label %for.body, !dbg !14
27
28for.cond5.preheader:                              ; preds = %for.body
29  br i1 %cmp25, label %for.body7.preheader, label %for.end15, !dbg !16, !llvm.loop !18
30
31for.body7.preheader:                              ; preds = %for.cond5.preheader
32  br label %for.body7, !dbg !20
33
34for.body:                                         ; preds = %for.body.preheader, %for.body
35  %indvars.iv27 = phi i64 [ %indvars.iv.next28, %for.body ], [ 0, %for.body.preheader ]
36  %arrayidx = getelementptr inbounds i32* %B, i64 %indvars.iv27, !dbg !14
37  %0 = load i32* %arrayidx, align 4, !dbg !14, !tbaa !22
38  %idxprom1 = sext i32 %0 to i64, !dbg !14
39  %arrayidx2 = getelementptr inbounds i32* %A, i64 %idxprom1, !dbg !14
40  %1 = load i32* %arrayidx2, align 4, !dbg !14, !tbaa !22
41  %inc = add nsw i32 %1, 1, !dbg !14
42  store i32 %inc, i32* %arrayidx2, align 4, !dbg !14, !tbaa !22
43  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1, !dbg !10
44  %lftr.wideiv29 = trunc i64 %indvars.iv.next28 to i32, !dbg !10
45  %exitcond30 = icmp eq i32 %lftr.wideiv29, %number, !dbg !10
46  br i1 %exitcond30, label %for.cond5.preheader, label %for.body, !dbg !10, !llvm.loop !12
47
48for.body7:                                        ; preds = %for.body7.preheader, %for.body7
49  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body7 ], [ 0, %for.body7.preheader ]
50  %arrayidx9 = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !20
51  %2 = load i32* %arrayidx9, align 4, !dbg !20, !tbaa !22
52  %idxprom10 = sext i32 %2 to i64, !dbg !20
53  %arrayidx11 = getelementptr inbounds i32* %B, i64 %idxprom10, !dbg !20
54  %3 = load i32* %arrayidx11, align 4, !dbg !20, !tbaa !22
55  %inc12 = add nsw i32 %3, 1, !dbg !20
56  store i32 %inc12, i32* %arrayidx11, align 4, !dbg !20, !tbaa !22
57  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !16
58  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !16
59  %exitcond = icmp eq i32 %lftr.wideiv, %number, !dbg !16
60  br i1 %exitcond, label %for.end15.loopexit, label %for.body7, !dbg !16, !llvm.loop !18
61
62for.end15.loopexit:                               ; preds = %for.body7
63  br label %for.end15
64
65for.end15:                                        ; preds = %for.end15.loopexit, %entry, %for.cond5.preheader
66  ret void, !dbg !26
67}
68
69attributes #0 = { nounwind }
70
71!llvm.dbg.cu = !{!0}
72!llvm.module.flags = !{!7, !8}
73!llvm.ident = !{!9}
74
75!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}
76!1 = metadata !{metadata !"no_array_bounds.cpp", metadata !"."}
77!2 = metadata !{}
78!3 = metadata !{metadata !4}
79!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*, i32)* @_Z4testPiS_i, null, null, metadata !2, i32 2}
80!5 = metadata !{i32 786473, metadata !1}
81!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}
82!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
83!8 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
84!9 = metadata !{metadata !"clang version 3.5.0"}
85!10 = metadata !{i32 4, i32 8, metadata !11, null}
86!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 4, i32 3, i32 0, i32 0}
87!12 = metadata !{metadata !12, metadata !13}
88!13 = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
89!14 = metadata !{i32 5, i32 5, metadata !15, null}
90!15 = metadata !{i32 786443, metadata !1, metadata !11, i32 4, i32 36, i32 0, i32 1}
91!16 = metadata !{i32 9, i32 8, metadata !17, null}
92!17 = metadata !{i32 786443, metadata !1, metadata !4, i32 9, i32 3, i32 0, i32 2}
93!18 = metadata !{metadata !18, metadata !13, metadata !19}
94!19 = metadata !{metadata !"llvm.loop.vectorize.width", i32 1}
95!20 = metadata !{i32 10, i32 5, metadata !21, null}
96!21 = metadata !{i32 786443, metadata !1, metadata !17, i32 9, i32 36, i32 0, i32 3}
97!22 = metadata !{metadata !23, metadata !23, i64 0}
98!23 = metadata !{metadata !"int", metadata !24, i64 0}
99!24 = metadata !{metadata !"omnipotent char", metadata !25, i64 0}
100!25 = metadata !{metadata !"Simple C/C++ TBAA"}
101!26 = metadata !{i32 12, i32 1, metadata !4, null}
102