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(full)
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 enum struct Tuner : short { Interleave = 4, Unroll = 8 };
32
33 // Verify for loop is recognized after sequence of pragma clang loop directives.
for_test(int * List,int Length)34 void for_test(int *List, int Length) {
35 #pragma clang loop interleave(enable)
36 #pragma clang loop interleave_count(static_cast<int>(Tuner::Interleave))
37 #pragma clang loop unroll_count(static_cast<int>(Tuner::Unroll))
38 for (int i = 0; i < Length; i++) {
39 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
40 List[i] = i * 2;
41 }
42 }
43
44 // Verify c++11 for range loop is recognized after
45 // sequence of pragma clang loop directives.
for_range_test()46 void for_range_test() {
47 double List[100];
48
49 #pragma clang loop vectorize_width(2) interleave_count(2)
50 for (int i : List) {
51 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
52 List[i] = i;
53 }
54 }
55
56 // Verify disable pragma clang loop directive generates correct metadata
disable_test(int * List,int Length)57 void disable_test(int *List, int Length) {
58 #pragma clang loop vectorize(disable) unroll(disable)
59 for (int i = 0; i < Length; i++) {
60 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
61 List[i] = i * 2;
62 }
63 }
64
65 #define VECWIDTH 2
66 #define INTCOUNT 2
67 #define UNROLLCOUNT 8
68
69 // Verify defines are correctly resolved in pragma clang loop directive
for_define_test(int * List,int Length,int Value)70 void for_define_test(int *List, int Length, int Value) {
71 #pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
72 #pragma clang loop unroll_count(UNROLLCOUNT)
73 for (int i = 0; i < Length; i++) {
74 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_6:.*]]
75 List[i] = i * Value;
76 }
77 }
78
79 // Verify constant expressions are handled correctly.
for_contant_expression_test(int * List,int Length)80 void for_contant_expression_test(int *List, int Length) {
81 #pragma clang loop vectorize_width(1 + 4)
82 for (int i = 0; i < Length; i++) {
83 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
84 List[i] = i;
85 }
86
87 #pragma clang loop vectorize_width(3 + VECWIDTH)
88 for (int i = 0; i < Length; i++) {
89 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_8:.*]]
90 List[i] += i;
91 }
92 }
93
94 // Verify metadata is generated when template is used.
95 template <typename A>
for_template_test(A * List,int Length,A Value)96 void for_template_test(A *List, int Length, A Value) {
97 #pragma clang loop vectorize_width(8) interleave_count(8) unroll_count(8)
98 for (int i = 0; i < Length; i++) {
99 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_9:.*]]
100 List[i] = i * Value;
101 }
102 }
103
104 // Verify define is resolved correctly when template is used.
105 template <typename A, typename T>
for_template_define_test(A * List,int Length,A Value)106 void for_template_define_test(A *List, int Length, A Value) {
107 const T VWidth = VECWIDTH;
108 const T ICount = INTCOUNT;
109 const T UCount = UNROLLCOUNT;
110 #pragma clang loop vectorize_width(VWidth) interleave_count(ICount)
111 #pragma clang loop unroll_count(UCount)
112 for (int i = 0; i < Length; i++) {
113 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_10:.*]]
114 List[i] = i * Value;
115 }
116 }
117
118 // Verify templates and constant expressions are handled correctly.
119 template <typename A, int V, int I, int U>
for_template_constant_expression_test(A * List,int Length)120 void for_template_constant_expression_test(A *List, int Length) {
121 #pragma clang loop vectorize_width(V) interleave_count(I) unroll_count(U)
122 for (int i = 0; i < Length; i++) {
123 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_11:.*]]
124 List[i] = i;
125 }
126
127 #pragma clang loop vectorize_width(V * 2 + VECWIDTH) interleave_count(I * 2 + INTCOUNT) unroll_count(U * 2 + UNROLLCOUNT)
128 for (int i = 0; i < Length; i++) {
129 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_12:.*]]
130 List[i] += i;
131 }
132
133 const int Scale = 4;
134 #pragma clang loop vectorize_width(Scale * V) interleave_count(Scale * I) unroll_count(Scale * U)
135 for (int i = 0; i < Length; i++) {
136 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_13:.*]]
137 List[i] += i;
138 }
139
140 #pragma clang loop vectorize_width((Scale * V) + 2)
141 for (int i = 0; i < Length; i++) {
142 // CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_14:.*]]
143 List[i] += i;
144 }
145 }
146
147 #undef VECWIDTH
148 #undef INTCOUNT
149 #undef UNROLLCOUNT
150
151 // Use templates defined above. Test verifies metadata is generated correctly.
template_test(double * List,int Length)152 void template_test(double *List, int Length) {
153 double Value = 10;
154
155 for_template_test<double>(List, Length, Value);
156 for_template_define_test<double, int>(List, Length, Value);
157 for_template_constant_expression_test<double, 2, 4, 8>(List, Length);
158 }
159
160 // CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[UNROLL_FULL:.*]], ![[WIDTH_4:.*]], ![[INTERLEAVE_4:.*]], ![[INTENABLE_1:.*]]}
161 // CHECK: ![[UNROLL_FULL]] = !{!"llvm.loop.unroll.full"}
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: ![[LOOP_2]] = distinct !{![[LOOP_2:.*]], ![[UNROLL_DISABLE:.*]], ![[INTERLEAVE_4:.*]], ![[WIDTH_8:.*]]}
166 // CHECK: ![[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"}
167 // CHECK: ![[WIDTH_8]] = !{!"llvm.loop.vectorize.width", i32 8}
168 // CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[UNROLL_8:.*]], ![[INTERLEAVE_4:.*]], ![[ENABLE_1:.*]]}
169 // CHECK: ![[UNROLL_8]] = !{!"llvm.loop.unroll.count", i32 8}
170 // CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], ![[INTERLEAVE_2:.*]], ![[WIDTH_2:.*]]}
171 // CHECK: ![[INTERLEAVE_2]] = !{!"llvm.loop.interleave.count", i32 2}
172 // CHECK: ![[WIDTH_2]] = !{!"llvm.loop.vectorize.width", i32 2}
173 // CHECK: ![[LOOP_5]] = distinct !{![[LOOP_5]], ![[UNROLL_DISABLE:.*]], ![[WIDTH_1:.*]]}
174 // CHECK: ![[WIDTH_1]] = !{!"llvm.loop.vectorize.width", i32 1}
175 // CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], ![[UNROLL_8:.*]], ![[INTERLEAVE_2:.*]], ![[WIDTH_2:.*]]}
176 // CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[WIDTH_5:.*]]}
177 // CHECK: ![[WIDTH_5]] = !{!"llvm.loop.vectorize.width", i32 5}
178 // CHECK: ![[LOOP_8]] = distinct !{![[LOOP_8]], ![[WIDTH_5:.*]]}
179 // CHECK: ![[LOOP_9]] = distinct !{![[LOOP_9]], ![[UNROLL_8:.*]], ![[INTERLEAVE_8:.*]], ![[WIDTH_8:.*]]}
180 // CHECK: ![[INTERLEAVE_8]] = !{!"llvm.loop.interleave.count", i32 8}
181 // CHECK: ![[LOOP_10]] = distinct !{![[LOOP_10]], ![[UNROLL_8:.*]], ![[INTERLEAVE_2:.*]], ![[WIDTH_2:.*]]}
182 // CHECK: ![[LOOP_11]] = distinct !{![[LOOP_11]], ![[UNROLL_8:.*]], ![[INTERLEAVE_4:.*]], ![[WIDTH_2:.*]]}
183 // CHECK: ![[LOOP_12]] = distinct !{![[LOOP_12]], ![[UNROLL_24:.*]], ![[INTERLEAVE_10:.*]], ![[WIDTH_6:.*]]}
184 // CHECK: ![[UNROLL_24]] = !{!"llvm.loop.unroll.count", i32 24}
185 // CHECK: ![[INTERLEAVE_10]] = !{!"llvm.loop.interleave.count", i32 10}
186 // CHECK: ![[WIDTH_6]] = !{!"llvm.loop.vectorize.width", i32 6}
187 // CHECK: ![[LOOP_13]] = distinct !{![[LOOP_13]], ![[UNROLL_32:.*]], ![[INTERLEAVE_16:.*]], ![[WIDTH_8:.*]]}
188 // CHECK: ![[UNROLL_32]] = !{!"llvm.loop.unroll.count", i32 32}
189 // CHECK: ![[INTERLEAVE_16]] = !{!"llvm.loop.interleave.count", i32 16}
190 // CHECK: ![[LOOP_14]] = distinct !{![[LOOP_14]], ![[WIDTH_10:.*]]}
191 // CHECK: ![[WIDTH_10]] = !{!"llvm.loop.vectorize.width", i32 10}
192