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(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.
20void 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.
32void 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.
44void 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
55void 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
68void 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.
78template <typename A>
79void 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.
89template <typename A>
90void 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.
104void 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