1 ; RUN: opt < %s -passes=loop-vectorize,transform-warning -S 2>&1 | FileCheck %s
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: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
5 ; CHECK: warning: no_array_bounds.cpp:10:5: loop not interleaved: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
7 ; #pragma clang loop vectorize(enable)
8 ; for (int i = 0; i < number; i++) {
12 ; #pragma clang loop vectorize(disable) interleave(enable)
13 ; for (int i = 0; i < number; i++) {
17 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
19 ; Function Attrs: nounwind ssp uwtable
20 define void @_Z4testPiS_i(ptr nocapture %A, ptr nocapture %B, i32 %number) #0 !dbg !4 {
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
25 for.body.preheader: ; preds = %entry
26 br label %for.body, !dbg !14
28 for.cond5.preheader: ; preds = %for.body
29 br i1 %cmp25, label %for.body7.preheader, label %for.end15, !dbg !16, !llvm.loop !18
31 for.body7.preheader: ; preds = %for.cond5.preheader
32 br label %for.body7, !dbg !20
34 for.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, ptr %B, i64 %indvars.iv27, !dbg !14
37 %0 = load i32, ptr %arrayidx, align 4, !dbg !14, !tbaa !22
38 %idxprom1 = sext i32 %0 to i64, !dbg !14
39 %arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1, !dbg !14
40 %1 = load i32, ptr %arrayidx2, align 4, !dbg !14, !tbaa !22
41 %inc = add nsw i32 %1, 1, !dbg !14
42 store i32 %inc, ptr %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
48 for.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, ptr %A, i64 %indvars.iv, !dbg !20
51 %2 = load i32, ptr %arrayidx9, align 4, !dbg !20, !tbaa !22
52 %idxprom10 = sext i32 %2 to i64, !dbg !20
53 %arrayidx11 = getelementptr inbounds i32, ptr %B, i64 %idxprom10, !dbg !20
54 %3 = load i32, ptr %arrayidx11, align 4, !dbg !20, !tbaa !22
55 %inc12 = add nsw i32 %3, 1, !dbg !20
56 store i32 %inc12, ptr %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
62 for.end15.loopexit: ; preds = %for.body7
65 for.end15: ; preds = %for.end15.loopexit, %entry, %for.cond5.preheader
69 attributes #0 = { nounwind }
72 !llvm.module.flags = !{!7, !8}
75 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
76 !1 = !DIFile(filename: "no_array_bounds.cpp", directory: ".")
78 !4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)
79 !5 = !DIFile(filename: "no_array_bounds.cpp", directory: ".")
80 !6 = !DISubroutineType(types: !2)
81 !7 = !{i32 2, !"Dwarf Version", i32 2}
82 !8 = !{i32 2, !"Debug Info Version", i32 3}
83 !9 = !{!"clang version 3.5.0"}
84 !10 = !DILocation(line: 4, column: 8, scope: !11)
85 !11 = distinct !DILexicalBlock(line: 4, column: 3, file: !1, scope: !4)
87 !13 = !{!"llvm.loop.vectorize.enable", i1 true}
88 !14 = !DILocation(line: 5, column: 5, scope: !15)
89 !15 = distinct !DILexicalBlock(line: 4, column: 36, file: !1, scope: !11)
90 !16 = !DILocation(line: 9, column: 8, scope: !17)
91 !17 = distinct !DILexicalBlock(line: 9, column: 3, file: !1, scope: !4)
92 !18 = !{!18, !13, !19}
93 !19 = !{!"llvm.loop.vectorize.width", i32 1}
94 !20 = !DILocation(line: 10, column: 5, scope: !21)
95 !21 = distinct !DILexicalBlock(line: 9, column: 36, file: !1, scope: !17)
96 !22 = !{!23, !23, i64 0}
97 !23 = !{!"int", !24, i64 0}
98 !24 = !{!"omnipotent char", !25, i64 0}
99 !25 = !{!"Simple C/C++ TBAA"}
100 !26 = !DILocation(line: 12, column: 1, scope: !4)