| 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 unroll pragma. |
|---|
| 4 | void while_test(int *List, int Length) { |
|---|
| 5 | // CHECK: define {{.*}} @_Z10while_test |
|---|
| 6 | int i = 0; |
|---|
| 7 | |
|---|
| 8 | #pragma unroll |
|---|
| 9 | while (i < Length) { |
|---|
| 10 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]] |
|---|
| 11 | List[i] = i * 2; |
|---|
| 12 | i++; |
|---|
| 13 | } |
|---|
| 14 | } |
|---|
| 15 | |
|---|
| 16 | // Verify do loop is recognized after multi-option pragma clang loop directive. |
|---|
| 17 | void do_test(int *List, int Length) { |
|---|
| 18 | // CHECK: define {{.*}} @_Z7do_test |
|---|
| 19 | int i = 0; |
|---|
| 20 | |
|---|
| 21 | #pragma nounroll |
|---|
| 22 | do { |
|---|
| 23 | // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]] |
|---|
| 24 | List[i] = i * 2; |
|---|
| 25 | i++; |
|---|
| 26 | } while (i < Length); |
|---|
| 27 | } |
|---|
| 28 | |
|---|
| 29 | // Verify for loop is recognized after unroll pragma. |
|---|
| 30 | void for_test(int *List, int Length) { |
|---|
| 31 | // CHECK: define {{.*}} @_Z8for_test |
|---|
| 32 | #pragma unroll 8 |
|---|
| 33 | for (int i = 0; i < Length; i++) { |
|---|
| 34 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]] |
|---|
| 35 | List[i] = i * 2; |
|---|
| 36 | } |
|---|
| 37 | } |
|---|
| 38 | |
|---|
| 39 | // Verify c++11 for range loop is recognized after unroll pragma. |
|---|
| 40 | void for_range_test() { |
|---|
| 41 | // CHECK: define {{.*}} @_Z14for_range_test |
|---|
| 42 | double List[100]; |
|---|
| 43 | |
|---|
| 44 | #pragma unroll(4) |
|---|
| 45 | for (int i : List) { |
|---|
| 46 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_4:.*]] |
|---|
| 47 | List[i] = i; |
|---|
| 48 | } |
|---|
| 49 | } |
|---|
| 50 | |
|---|
| 51 | #define UNROLLCOUNT 8 |
|---|
| 52 | |
|---|
| 53 | // Verify defines are correctly resolved in unroll pragmas. |
|---|
| 54 | void for_define_test(int *List, int Length, int Value) { |
|---|
| 55 | // CHECK: define {{.*}} @_Z15for_define_test |
|---|
| 56 | #pragma unroll(UNROLLCOUNT) |
|---|
| 57 | for (int i = 0; i < Length; i++) { |
|---|
| 58 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_5:.*]] |
|---|
| 59 | List[i] = i * Value; |
|---|
| 60 | } |
|---|
| 61 | } |
|---|
| 62 | |
|---|
| 63 | // Verify metadata is generated when template is used. |
|---|
| 64 | template <typename A> |
|---|
| 65 | void for_template_test(A *List, int Length, A Value) { |
|---|
| 66 | // CHECK: define {{.*}} @_Z13template_test |
|---|
| 67 | #pragma unroll 8 |
|---|
| 68 | for (int i = 0; i < Length; i++) { |
|---|
| 69 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_6:.*]] |
|---|
| 70 | List[i] = i * Value; |
|---|
| 71 | } |
|---|
| 72 | } |
|---|
| 73 | |
|---|
| 74 | // Verify define is resolved correctly when template is used. |
|---|
| 75 | template <typename A> |
|---|
| 76 | void for_template_define_test(A *List, int Length, A Value) { |
|---|
| 77 | // CHECK: define {{.*}} @_Z24for_template_define_test |
|---|
| 78 | |
|---|
| 79 | #pragma unroll(UNROLLCOUNT) |
|---|
| 80 | for (int i = 0; i < Length; i++) { |
|---|
| 81 | // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_7:.*]] |
|---|
| 82 | List[i] = i * Value; |
|---|
| 83 | } |
|---|
| 84 | } |
|---|
| 85 | |
|---|
| 86 | #undef UNROLLCOUNT |
|---|
| 87 | |
|---|
| 88 | // Use templates defined above. Test verifies metadata is generated correctly. |
|---|
| 89 | void template_test(double *List, int Length) { |
|---|
| 90 | double Value = 10; |
|---|
| 91 | |
|---|
| 92 | for_template_test<double>(List, Length, Value); |
|---|
| 93 | for_template_define_test<double>(List, Length, Value); |
|---|
| 94 | } |
|---|
| 95 | |
|---|
| 96 | // CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[UNROLL_ENABLE:.*]]} |
|---|
| 97 | // CHECK: ![[UNROLL_ENABLE]] = !{!"llvm.loop.unroll.enable"} |
|---|
| 98 | // CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2:.*]], ![[UNROLL_DISABLE:.*]]} |
|---|
| 99 | // CHECK: ![[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"} |
|---|
| 100 | // CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[UNROLL_8:.*]]} |
|---|
| 101 | // CHECK: ![[UNROLL_8]] = !{!"llvm.loop.unroll.count", i32 8} |
|---|
| 102 | // CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], ![[UNROLL_4:.*]]} |
|---|
| 103 | // CHECK: ![[UNROLL_4]] = !{!"llvm.loop.unroll.count", i32 4} |
|---|
| 104 | // CHECK: ![[LOOP_5]] = distinct !{![[LOOP_5]], ![[UNROLL_8:.*]]} |
|---|
| 105 | // CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], ![[UNROLL_8:.*]]} |
|---|
| 106 | // CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[UNROLL_8:.*]]} |
|---|
| 107 | |
|---|