1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s 2 3 // Verify while loop is recognized after sequence of pragma clang loop directives. 4 void while_test(int *List, int Length) { 5 // CHECK: define {{.*}} @_Z10while_test 6 int i = 0; 7 8 #pragma clang loop vectorize(enable) 9 #pragma clang loop interleave_count(4) 10 #pragma clang loop vectorize_width(4) 11 #pragma clang loop unroll(full) 12 #pragma clang loop distribute(enable) 13 while (i < Length) { 14 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]] 15 List[i] = i * 2; 16 i++; 17 } 18 } 19 20 // Verify do loop is recognized after multi-option pragma clang loop directive. 21 void do_test(int *List, int Length) { 22 int i = 0; 23 24 #pragma clang loop vectorize_width(8) interleave_count(4) unroll(disable) distribute(disable) 25 do { 26 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]] 27 List[i] = i * 2; 28 i++; 29 } while (i < Length); 30 } 31 32 enum struct Tuner : short { Interleave = 4, Unroll = 8 }; 33 34 // Verify for loop is recognized after sequence of pragma clang loop directives. 35 void for_test(int *List, int Length) { 36 #pragma clang loop interleave(enable) 37 #pragma clang loop interleave_count(static_cast<int>(Tuner::Interleave)) 38 #pragma clang loop unroll_count(static_cast<int>(Tuner::Unroll)) 39 for (int i = 0; i < Length; i++) { 40 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]] 41 List[i] = i * 2; 42 } 43 } 44 45 // Verify c++11 for range loop is recognized after 46 // sequence of pragma clang loop directives. 47 void for_range_test() { 48 double List[100]; 49 50 #pragma clang loop vectorize_width(2) interleave_count(2) 51 for (int i : List) { 52 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_4:.*]] 53 List[i] = i; 54 } 55 } 56 57 // Verify disable pragma clang loop directive generates correct metadata 58 void disable_test(int *List, int Length) { 59 #pragma clang loop vectorize(disable) unroll(disable) distribute(disable) 60 for (int i = 0; i < Length; i++) { 61 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_5:.*]] 62 List[i] = i * 2; 63 } 64 } 65 66 #define VECWIDTH 2 67 #define INTCOUNT 2 68 #define UNROLLCOUNT 8 69 70 // Verify defines are correctly resolved in pragma clang loop directive 71 void for_define_test(int *List, int Length, int Value) { 72 #pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT) 73 #pragma clang loop unroll_count(UNROLLCOUNT) 74 for (int i = 0; i < Length; i++) { 75 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_6:.*]] 76 List[i] = i * Value; 77 } 78 } 79 80 // Verify constant expressions are handled correctly. 81 void for_contant_expression_test(int *List, int Length) { 82 #pragma clang loop vectorize_width(1 + 4) 83 for (int i = 0; i < Length; i++) { 84 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_7:.*]] 85 List[i] = i; 86 } 87 88 #pragma clang loop vectorize_width(3 + VECWIDTH) 89 for (int i = 0; i < Length; i++) { 90 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_8:.*]] 91 List[i] += i; 92 } 93 } 94 95 // Verify metadata is generated when template is used. 96 template <typename A> 97 void for_template_test(A *List, int Length, A Value) { 98 #pragma clang loop vectorize_width(8) interleave_count(8) unroll_count(8) 99 for (int i = 0; i < Length; i++) { 100 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_9:.*]] 101 List[i] = i * Value; 102 } 103 } 104 105 // Verify define is resolved correctly when template is used. 106 template <typename A, typename T> 107 void for_template_define_test(A *List, int Length, A Value) { 108 const T VWidth = VECWIDTH; 109 const T ICount = INTCOUNT; 110 const T UCount = UNROLLCOUNT; 111 #pragma clang loop vectorize_width(VWidth) interleave_count(ICount) 112 #pragma clang loop unroll_count(UCount) 113 for (int i = 0; i < Length; i++) { 114 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_10:.*]] 115 List[i] = i * Value; 116 } 117 } 118 119 // Verify templates and constant expressions are handled correctly. 120 template <typename A, int V, int I, int U> 121 void for_template_constant_expression_test(A *List, int Length) { 122 #pragma clang loop vectorize_width(V) interleave_count(I) unroll_count(U) 123 for (int i = 0; i < Length; i++) { 124 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_11:.*]] 125 List[i] = i; 126 } 127 128 #pragma clang loop vectorize_width(V * 2 + VECWIDTH) interleave_count(I * 2 + INTCOUNT) unroll_count(U * 2 + UNROLLCOUNT) 129 for (int i = 0; i < Length; i++) { 130 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_12:.*]] 131 List[i] += i; 132 } 133 134 const int Scale = 4; 135 #pragma clang loop vectorize_width(Scale * V) interleave_count(Scale * I) unroll_count(Scale * U) 136 for (int i = 0; i < Length; i++) { 137 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_13:.*]] 138 List[i] += i; 139 } 140 141 #pragma clang loop vectorize_width((Scale * V) + 2) 142 for (int i = 0; i < Length; i++) { 143 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_14:.*]] 144 List[i] += i; 145 } 146 } 147 148 #undef VECWIDTH 149 #undef INTCOUNT 150 #undef UNROLLCOUNT 151 152 // Use templates defined above. Test verifies metadata is generated correctly. 153 void template_test(double *List, int Length) { 154 double Value = 10; 155 156 for_template_test<double>(List, Length, Value); 157 for_template_define_test<double, int>(List, Length, Value); 158 for_template_constant_expression_test<double, 2, 4, 8>(List, Length); 159 } 160 161 // CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[WIDTH_4:.*]], ![[INTERLEAVE_4:.*]], ![[INTENABLE_1:.*]], ![[UNROLL_FULL:.*]], ![[DISTRIBUTE_ENABLE:.*]]} 162 // CHECK: ![[WIDTH_4]] = !{!"llvm.loop.vectorize.width", i32 4} 163 // CHECK: ![[INTERLEAVE_4]] = !{!"llvm.loop.interleave.count", i32 4} 164 // CHECK: ![[INTENABLE_1]] = !{!"llvm.loop.vectorize.enable", i1 true} 165 // CHECK: ![[UNROLL_FULL]] = !{!"llvm.loop.unroll.full"} 166 // CHECK: ![[DISTRIBUTE_ENABLE]] = !{!"llvm.loop.distribute.enable", i1 true} 167 // CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2:.*]], ![[WIDTH_8:.*]], ![[INTERLEAVE_4:.*]], ![[UNROLL_DISABLE:.*]], ![[DISTRIBUTE_DISABLE:.*]]} 168 // CHECK: ![[WIDTH_8]] = !{!"llvm.loop.vectorize.width", i32 8} 169 // CHECK: ![[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"} 170 // CHECK: ![[DISTRIBUTE_DISABLE]] = !{!"llvm.loop.distribute.enable", i1 false} 171 // CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[INTERLEAVE_4:.*]], ![[UNROLL_8:.*]], ![[INTENABLE_1:.*]]} 172 // CHECK: ![[UNROLL_8]] = !{!"llvm.loop.unroll.count", i32 8} 173 // CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]]} 174 // CHECK: ![[WIDTH_2]] = !{!"llvm.loop.vectorize.width", i32 2} 175 // CHECK: ![[INTERLEAVE_2]] = !{!"llvm.loop.interleave.count", i32 2} 176 // CHECK: ![[LOOP_5]] = distinct !{![[LOOP_5]], ![[WIDTH_1:.*]], ![[UNROLL_DISABLE:.*]], ![[DISTRIBUTE_DISABLE:.*]]} 177 // CHECK: ![[WIDTH_1]] = !{!"llvm.loop.vectorize.width", i32 1} 178 // CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]], ![[UNROLL_8:.*]]} 179 // CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[WIDTH_5:.*]]} 180 // CHECK: ![[WIDTH_5]] = !{!"llvm.loop.vectorize.width", i32 5} 181 // CHECK: ![[LOOP_8]] = distinct !{![[LOOP_8]], ![[WIDTH_5:.*]]} 182 // CHECK: ![[LOOP_9]] = distinct !{![[LOOP_9]], ![[WIDTH_8:.*]], ![[INTERLEAVE_8:.*]], ![[UNROLL_8:.*]]} 183 // CHECK: ![[INTERLEAVE_8]] = !{!"llvm.loop.interleave.count", i32 8} 184 // CHECK: ![[LOOP_10]] = distinct !{![[LOOP_10]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]], ![[UNROLL_8:.*]]} 185 // CHECK: ![[LOOP_11]] = distinct !{![[LOOP_11]], ![[WIDTH_2:.*]], ![[INTERLEAVE_4:.*]], ![[UNROLL_8:.*]]} 186 // CHECK: ![[LOOP_12]] = distinct !{![[LOOP_12]], ![[WIDTH_6:.*]], ![[INTERLEAVE_10:.*]], ![[UNROLL_24:.*]]} 187 // CHECK: ![[WIDTH_6]] = !{!"llvm.loop.vectorize.width", i32 6} 188 // CHECK: ![[INTERLEAVE_10]] = !{!"llvm.loop.interleave.count", i32 10} 189 // CHECK: ![[UNROLL_24]] = !{!"llvm.loop.unroll.count", i32 24} 190 // CHECK: ![[LOOP_13]] = distinct !{![[LOOP_13]], ![[WIDTH_8:.*]], ![[INTERLEAVE_16:.*]], ![[UNROLL_32:.*]]} 191 // CHECK: ![[INTERLEAVE_16]] = !{!"llvm.loop.interleave.count", i32 16} 192 // CHECK: ![[UNROLL_32]] = !{!"llvm.loop.unroll.count", i32 32} 193 // CHECK: ![[LOOP_14]] = distinct !{![[LOOP_14]], ![[WIDTH_10:.*]]} 194 // CHECK: ![[WIDTH_10]] = !{!"llvm.loop.vectorize.width", i32 10} 195