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. 4void 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. 21void 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 32enum struct Tuner : short { Interleave = 4, Unroll = 8 }; 33 34// Verify for loop is recognized after sequence of pragma clang loop directives. 35void 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. 47void 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 58void 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 71void 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. 81void 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. 96template <typename A> 97void 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. 106template <typename A, typename T> 107void 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. 120template <typename A, int V, int I, int U> 121void 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. 153void 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