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.
while_test(int * List,int Length)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(enable)
12 while (i < Length) {
13 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
14 List[i] = i * 2;
15 i++;
16 }
17 }
18
19 // Verify do loop is recognized after multi-option pragma clang loop directive.
do_test(int * List,int Length)20 void do_test(int *List, int Length) {
21 int i = 0;
22
23 #pragma clang loop vectorize_width(8) interleave_count(4) unroll(disable)
24 do {
25 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
26 List[i] = i * 2;
27 i++;
28 } while (i < Length);
29 }
30
31 // Verify for loop is recognized after sequence of pragma clang loop directives.
for_test(int * List,int Length)32 void for_test(int *List, int Length) {
33 #pragma clang loop interleave(enable)
34 #pragma clang loop interleave_count(4)
35 #pragma clang loop unroll_count(8)
36 for (int i = 0; i < Length; i++) {
37 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
38 List[i] = i * 2;
39 }
40 }
41
42 // Verify c++11 for range loop is recognized after
43 // sequence of pragma clang loop directives.
for_range_test()44 void for_range_test() {
45 double List[100];
46
47 #pragma clang loop vectorize_width(2) interleave_count(2)
48 for (int i : List) {
49 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
50 List[i] = i;
51 }
52 }
53
54 // Verify disable pragma clang loop directive generates correct metadata
disable_test(int * List,int Length)55 void disable_test(int *List, int Length) {
56 #pragma clang loop vectorize(disable) unroll(disable)
57 for (int i = 0; i < Length; i++) {
58 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
59 List[i] = i * 2;
60 }
61 }
62
63 #define VECWIDTH 2
64 #define INTCOUNT 2
65 #define UNROLLCOUNT 8
66
67 // Verify defines are correctly resolved in pragma clang loop directive
for_define_test(int * List,int Length,int Value)68 void for_define_test(int *List, int Length, int Value) {
69 #pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
70 #pragma clang loop unroll_count(UNROLLCOUNT)
71 for (int i = 0; i < Length; i++) {
72 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_6:.*]]
73 List[i] = i * Value;
74 }
75 }
76
77 // Verify metadata is generated when template is used.
78 template <typename A>
for_template_test(A * List,int Length,A Value)79 void for_template_test(A *List, int Length, A Value) {
80
81 #pragma clang loop vectorize_width(8) interleave_count(8) unroll_count(8)
82 for (int i = 0; i < Length; i++) {
83 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
84 List[i] = i * Value;
85 }
86 }
87
88 // Verify define is resolved correctly when template is used.
89 template <typename A>
for_template_define_test(A * List,int Length,A Value)90 void for_template_define_test(A *List, int Length, A Value) {
91 #pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
92 #pragma clang loop unroll_count(UNROLLCOUNT)
93 for (int i = 0; i < Length; i++) {
94 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_8:.*]]
95 List[i] = i * Value;
96 }
97 }
98
99 #undef VECWIDTH
100 #undef INTCOUNT
101 #undef UNROLLCOUNT
102
103 // Use templates defined above. Test verifies metadata is generated correctly.
template_test(double * List,int Length)104 void template_test(double *List, int Length) {
105 double Value = 10;
106
107 for_template_test<double>(List, Length, Value);
108 for_template_define_test<double>(List, Length, Value);
109 }
110
111 // CHECK: ![[LOOP_1]] = metadata !{metadata ![[LOOP_1]], metadata ![[UNROLLENABLE_1:.*]], metadata ![[WIDTH_4:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[INTENABLE_1:.*]]}
112 // CHECK: ![[UNROLLENABLE_1]] = metadata !{metadata !"llvm.loop.unroll.enable", i1 true}
113 // CHECK: ![[WIDTH_4]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 4}
114 // CHECK: ![[INTERLEAVE_4]] = metadata !{metadata !"llvm.loop.vectorize.unroll", i32 4}
115 // CHECK: ![[INTENABLE_1]] = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
116 // CHECK: ![[LOOP_2]] = metadata !{metadata ![[LOOP_2:.*]], metadata ![[UNROLLENABLE_0:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[WIDTH_8:.*]]}
117 // CHECK: ![[UNROLLENABLE_0]] = metadata !{metadata !"llvm.loop.unroll.enable", i1 false}
118 // CHECK: ![[WIDTH_8]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 8}
119 // CHECK: ![[LOOP_3]] = metadata !{metadata ![[LOOP_3]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[ENABLE_1:.*]]}
120 // CHECK: ![[UNROLL_8]] = metadata !{metadata !"llvm.loop.unroll.count", i32 8}
121 // CHECK: ![[LOOP_4]] = metadata !{metadata ![[LOOP_4]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}
122 // CHECK: ![[INTERLEAVE_2]] = metadata !{metadata !"llvm.loop.vectorize.unroll", i32 2}
123 // CHECK: ![[WIDTH_2]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 2}
124 // CHECK: ![[LOOP_5]] = metadata !{metadata ![[LOOP_5]], metadata ![[UNROLLENABLE_0:.*]], metadata ![[WIDTH_1:.*]]}
125 // CHECK: ![[WIDTH_1]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 1}
126 // CHECK: ![[LOOP_6]] = metadata !{metadata ![[LOOP_6]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}
127 // CHECK: ![[LOOP_7]] = metadata !{metadata ![[LOOP_7]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_8:.*]], metadata ![[WIDTH_8:.*]]}
128 // CHECK: ![[INTERLEAVE_8]] = metadata !{metadata !"llvm.loop.vectorize.unroll", i32 8}
129 // CHECK: ![[LOOP_8]] = metadata !{metadata ![[LOOP_8]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}
130