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: 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 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 !dbg !4 { 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, 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 !dbg !7 { 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, 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 !dbg !8 { 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, 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 !34 111 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 = 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: ".") 127!2 = !{} 128!3 = !{!4, !7, !8} 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) 159!34 = !{!34, !15} 160!35 = !DILocation(line: 19, column: 5, scope: !33) 161!36 = !DILocation(line: 20, column: 1, scope: !8) 162