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 45 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 46 47 ; Function Attrs: nounwind optsize ssp uwtable 48 define void @_Z4testPii(i32* nocapture %A, i32 %Length) #0 !dbg !4 { 49 entry: 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 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 %ld = load i32, i32* %arrayidx, align 4 58 store i32 %0, i32* %arrayidx, align 4, !dbg !16, !tbaa !18 59 %cmp3 = icmp sle i32 %ld, %Length, !dbg !22 60 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !12 61 %1 = trunc i64 %indvars.iv.next to i32 62 %cmp = icmp slt i32 %1, %Length, !dbg !12 63 %or.cond = and i1 %cmp3, %cmp, !dbg !22 64 br i1 %or.cond, label %for.body, label %for.end, !dbg !22 65 66 for.end: ; preds = %for.body, %entry 67 ret void, !dbg !24 68 } 69 70 ; Function Attrs: nounwind optsize ssp uwtable 71 define void @_Z13test_disabledPii(i32* nocapture %A, i32 %Length) #0 !dbg !7 { 72 entry: 73 %cmp4 = icmp sgt i32 %Length, 0, !dbg !25 74 br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27 75 76 for.body: ; preds = %entry, %for.body 77 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 78 %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !30 79 %0 = trunc i64 %indvars.iv to i32, !dbg !30 80 store i32 %0, i32* %arrayidx, align 4, !dbg !30, !tbaa !18 81 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !25 82 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !25 83 %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !25 84 br i1 %exitcond, label %for.end, label %for.body, !dbg !25, !llvm.loop !27 85 86 for.end: ; preds = %for.body, %entry 87 ret void, !dbg !31 88 } 89 90 ; Function Attrs: nounwind optsize ssp uwtable 91 define void @_Z17test_array_boundsPiS_i(i32* nocapture %A, i32* nocapture readonly %B, i32 %Length) #0 !dbg !8 { 92 entry: 93 %cmp9 = icmp sgt i32 %Length, 0, !dbg !32 94 br i1 %cmp9, label %for.body.preheader, label %for.end, !dbg !32, !llvm.loop !34 95 96 for.body.preheader: ; preds = %entry 97 br label %for.body, !dbg !35 98 99 for.body: ; preds = %for.body.preheader, %for.body 100 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] 101 %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv, !dbg !35 102 %0 = load i32, i32* %arrayidx, align 4, !dbg !35, !tbaa !18 103 %idxprom1 = sext i32 %0 to i64, !dbg !35 104 %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %idxprom1, !dbg !35 105 %1 = load i32, i32* %arrayidx2, align 4, !dbg !35, !tbaa !18 106 %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !35 107 store i32 %1, i32* %arrayidx4, align 4, !dbg !35, !tbaa !18 108 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !32 109 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !32 110 %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !32 111 br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !32, !llvm.loop !34 112 113 for.end.loopexit: ; preds = %for.body 114 br label %for.end 115 116 for.end: ; preds = %for.end.loopexit, %entry 117 ret void, !dbg !36 118 } 119 120 attributes #0 = { nounwind } 121 122 !llvm.dbg.cu = !{!0} 123 !llvm.module.flags = !{!9, !10} 124 !llvm.ident = !{!11} 125 126 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 127 !1 = !DIFile(filename: "source.cpp", directory: ".") 128 !2 = !{} 129 !4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, 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, unit: !0, 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, unit: !0, 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
