1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -std=c++20 -fopenmp -fopenmp-version=60 -fsyntax-only -Wuninitialized -verify %s
void func() {
// expected-error@+2 {{statement after '#pragma omp fuse' must be a loop sequence containing canonical loops or loop-generating constructs}}
#pragma omp fuse
;
// expected-error@+2 {{statement after '#pragma omp fuse' must be a for loop}}
#pragma omp fuse
{int bar = 0;}
// expected-error@+4 {{statement after '#pragma omp fuse' must be a for loop}}
#pragma omp fuse
{
for(int i = 0; i < 10; ++i);
int x = 2;
}
// expected-error@+2 {{statement after '#pragma omp fuse' must be a loop sequence containing canonical loops or loop-generating constructs}}
#pragma omp fuse
#pragma omp for
for (int i = 0; i < 7; ++i)
;
{
// expected-error@+2 {{expected statement}}
#pragma omp fuse
}
// expected-warning@+1 {{extra tokens at the end of '#pragma omp fuse' are ignored}}
#pragma omp fuse foo
{
for (int i = 0; i < 7; ++i)
;
for(int j = 0; j < 100; ++j);
}
// expected-error@+1 {{unexpected OpenMP clause 'final' in directive '#pragma omp fuse'}}
#pragma omp fuse final(0)
{
for (int i = 0; i < 7; ++i)
;
for(int j = 0; j < 100; ++j);
}
//expected-error@+3 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
#pragma omp fuse
{
for(int i = 0; i < 10; i*=2) {
;
}
for(int j = 0; j < 100; ++j);
}
//expected-error@+2 {{loop sequence after '#pragma omp fuse' must contain at least 1 canonical loop or loop-generating construct}}
#pragma omp fuse
{}
//expected-error@+3 {{statement after '#pragma omp fuse' must be a for loop}}
#pragma omp fuse
{
#pragma omp unroll full
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 10; ++j);
}
//expected-warning@+2 {{looprange clause selects a single loop, resulting in redundant fusion}}
#pragma omp fuse
{
for(int i = 0; i < 10; ++i);
}
//expected-warning@+1 {{looprange clause selects a single loop, resulting in redundant fusion}}
#pragma omp fuse looprange(1, 1)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
}
//expected-error@+1 {{argument to 'looprange' clause must be a strictly positive integer value}}
#pragma omp fuse looprange(1, -1)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
}
//expected-error@+1 {{argument to 'looprange' clause must be a strictly positive integer value}}
#pragma omp fuse looprange(1, 0)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
}
const int x = 1;
constexpr int y = 4;
//expected-error@+1 {{looprange clause selects loops from 1 to 4 but this exceeds the number of loops (3) in the loop sequence}}
#pragma omp fuse looprange(x,y)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
//expected-error@+1 {{looprange clause selects loops from 1 to 420 but this exceeds the number of loops (3) in the loop sequence}}
#pragma omp fuse looprange(1,420)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
//expected-error@+1 {{looprange clause selects loops from 1 to 6 but this exceeds the number of loops (5) in the loop sequence}}
#pragma omp fuse looprange(1,6)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
// This fusion results in 2 loops
#pragma omp fuse looprange(1,2)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
}
//expected-error@+1 {{looprange clause selects loops from 2 to 4 but this exceeds the number of loops (3) in the loop sequence}}
#pragma omp fuse looprange(2,3)
{
#pragma omp unroll partial(2)
for(int i = 0; i < 10; ++i);
#pragma omp reverse
for(int j = 0; j < 10; ++j);
#pragma omp fuse
{
{
#pragma omp reverse
for(int j = 0; j < 10; ++j);
}
for(int k = 0; k < 50; ++k);
}
}
}
// In a template context, but expression itself not instantiation-dependent
template <typename T>
static void templated_func() {
//expected-warning@+1 {{looprange clause selects a single loop, resulting in redundant fusion}}
#pragma omp fuse looprange(2,1)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
//expected-error@+1 {{looprange clause selects loops from 3 to 5 but this exceeds the number of loops (3) in the loop sequence}}
#pragma omp fuse looprange(3,3)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
}
template <int V>
static void templated_func_value_dependent() {
//expected-warning@+1 {{looprange clause selects a single loop, resulting in redundant fusion}}
#pragma omp fuse looprange(V,1)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
}
template <typename T>
static void templated_func_type_dependent() {
constexpr T s = 1;
//expected-error@+1 {{argument to 'looprange' clause must be a strictly positive integer value}}
#pragma omp fuse looprange(s,s-1)
{
for(int i = 0; i < 10; ++i);
for(int j = 0; j < 100; ++j);
for(int k = 0; k < 50; ++k);
}
}
void template_inst() {
// expected-note@+1 {{in instantiation of function template specialization 'templated_func<int>' requested here}}
templated_func<int>();
// expected-note@+1 {{in instantiation of function template specialization 'templated_func_value_dependent<1>' requested here}}
templated_func_value_dependent<1>();
// expected-note@+1 {{in instantiation of function template specialization 'templated_func_type_dependent<int>' requested here}}
templated_func_type_dependent<int>();
}
|
