1 ; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
4 ; void test(int *A, int Length) {
5 ; #pragma clang loop vectorize(enable) interleave(enable)
6 ; for (int i = 0; i < Length; i++) {
13 ; void test_disabled(int *A, int Length) {
14 ; #pragma clang loop vectorize(disable) interleave(disable)
15 ; for (int i = 0; i < Length; i++)
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++)
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: vectorization and interleaving are explicitly disabled, or vectorize width and interleave count are both 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
37 ; CHECK: _Z13test_disabledPii
41 ; CHECK: _Z17test_array_boundsPiS_i
45 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
47 ; Function Attrs: nounwind optsize ssp uwtable
48 define void @_Z4testPii(i32* nocapture %A, i32 %Length) #0 !dbg !4 {
50 %cmp10 = icmp sgt i32 %Length, 0, !dbg !12
51 br i1 %cmp10, label %for.body, label %for.end, !dbg !12, !llvm.loop !14
53 for.body: ; preds = %entry, %for.body
54 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
55 %arrayidx = getelementptr inbounds i32, 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
65 for.end: ; preds = %for.body, %entry
69 ; Function Attrs: nounwind optsize ssp uwtable
70 define void @_Z13test_disabledPii(i32* nocapture %A, i32 %Length) #0 !dbg !7 {
72 %cmp4 = icmp sgt i32 %Length, 0, !dbg !25
73 br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27
75 for.body: ; preds = %entry, %for.body
76 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
77 %arrayidx = getelementptr inbounds i32, 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
85 for.end: ; preds = %for.body, %entry
89 ; Function Attrs: nounwind optsize ssp uwtable
90 define void @_Z17test_array_boundsPiS_i(i32* nocapture %A, i32* nocapture readonly %B, i32 %Length) #0 !dbg !8 {
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
95 for.body.preheader: ; preds = %entry
96 br label %for.body, !dbg !35
98 for.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, i32* %B, i64 %indvars.iv, !dbg !35
101 %0 = load i32, i32* %arrayidx, align 4, !dbg !35, !tbaa !18
102 %idxprom1 = sext i32 %0 to i64, !dbg !35
103 %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %idxprom1, !dbg !35
104 %1 = load i32, i32* %arrayidx2, align 4, !dbg !35, !tbaa !18
105 %arrayidx4 = getelementptr inbounds i32, 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
112 for.end.loopexit: ; preds = %for.body
115 for.end: ; preds = %for.end.loopexit, %entry
119 attributes #0 = { nounwind }
122 !llvm.module.flags = !{!9, !10}
125 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
126 !1 = !DIFile(filename: "source.cpp", directory: ".")
129 !4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
130 !5 = !DIFile(filename: "source.cpp", directory: ".")
131 !6 = !DISubroutineType(types: !2)
132 !7 = distinct !DISubprogram(name: "test_disabled", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 10, file: !1, scope: !5, type: !6, variables: !2)
133 !8 = distinct !DISubprogram(name: "test_array_bounds", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 16, file: !1, scope: !5, type: !6, variables: !2)
134 !9 = !{i32 2, !"Dwarf Version", i32 2}
135 !10 = !{i32 2, !"Debug Info Version", i32 3}
136 !11 = !{!"clang version 3.5.0"}
137 !12 = !DILocation(line: 3, column: 8, scope: !13)
138 !13 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)
139 !14 = !{!14, !15, !15}
140 !15 = !{!"llvm.loop.vectorize.enable", i1 true}
141 !16 = !DILocation(line: 4, column: 5, scope: !17)
142 !17 = distinct !DILexicalBlock(line: 3, column: 36, file: !1, scope: !13)
143 !18 = !{!19, !19, i64 0}
144 !19 = !{!"int", !20, i64 0}
145 !20 = !{!"omnipotent char", !21, i64 0}
146 !21 = !{!"Simple C/C++ TBAA"}
147 !22 = !DILocation(line: 5, column: 9, scope: !23)
148 !23 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !17)
149 !24 = !DILocation(line: 8, column: 1, scope: !4)
150 !25 = !DILocation(line: 12, column: 8, scope: !26)
151 !26 = distinct !DILexicalBlock(line: 12, column: 3, file: !1, scope: !7)
152 !27 = !{!27, !28, !29}
153 !28 = !{!"llvm.loop.interleave.count", i32 1}
154 !29 = !{!"llvm.loop.vectorize.width", i32 1}
155 !30 = !DILocation(line: 13, column: 5, scope: !26)
156 !31 = !DILocation(line: 14, column: 1, scope: !7)
157 !32 = !DILocation(line: 18, column: 8, scope: !33)
158 !33 = distinct !DILexicalBlock(line: 18, column: 3, file: !1, scope: !8)
160 !35 = !DILocation(line: 19, column: 5, scope: !33)
161 !36 = !DILocation(line: 20, column: 1, scope: !8)