1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -std=c++17 -fopenmp -fopenmp-version=51 -fsyntax-only -Wuninitialized -verify %s
2 
3 void func() {
4 
5   // expected-error@+1 {{expected '('}}
6   #pragma omp tile sizes
7     ;
8 
9   // expected-error@+2 {{expected expression}}
10   // expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
11   #pragma omp tile  sizes(
12     ;
13 
14   // expected-error@+1 {{expected expression}}
15   #pragma omp tile sizes()
16     ;
17 
18   // expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
19   #pragma omp tile sizes(5
20     for (int i = 0; i < 7; ++i);
21 
22   // expected-error@+2 {{expected expression}}
23   // expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
24   #pragma omp tile sizes(5,
25     ;
26 
27   // expected-error@+1 {{expected expression}}
28   #pragma omp tile sizes(5,)
29     ;
30 
31   // expected-error@+2 {{expected expression}}
32   // expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
33   #pragma omp tile sizes(5+
34     ;
35 
36   // expected-error@+1 {{expected expression}}
37   #pragma omp tile sizes(5+)
38     ;
39 
40   // expected-error@+1 {{expected expression}}
41   #pragma omp tile sizes(for)
42     ;
43 
44   // expected-error@+1 {{argument to 'sizes' clause must be a strictly positive integer value}}
45   #pragma omp tile sizes(0)
46     ;
47 
48   // expected-error@+4 {{expression is not an integral constant expression}}
49   // expected-note@+3 {{read of non-const variable 'a' is not allowed in a constant expression}}
50   // expected-note@+1 {{declared here}}
51   int a;
52   #pragma omp tile sizes(a)
53     ;
54 
55   // expected-warning@+2 {{extra tokens at the end of '#pragma omp tile' are ignored}}
56   // expected-error@+1 {{directive '#pragma omp tile' requires the 'sizes' clause}}
57   #pragma omp tile foo
58     ;
59 
60   // expected-error@+1 {{directive '#pragma omp tile' cannot contain more than one 'sizes' clause}}
61   #pragma omp tile sizes(5) sizes(5)
62   for (int i = 0; i < 7; ++i)
63     ;
64 
65   // expected-error@+1 {{unexpected OpenMP clause 'collapse' in directive '#pragma omp tile'}}
66   #pragma omp tile sizes(5) collapse(2)
67   for (int i = 0; i < 7; ++i)
68     ;
69 
70   {
71     // expected-error@+2 {{expected statement}}
72     #pragma omp tile sizes(5)
73   }
74 
75   // expected-error@+2 {{statement after '#pragma omp tile' must be a for loop}}
76   #pragma omp tile sizes(5)
77   int b = 0;
78 
79   // expected-error@+3 {{statement after '#pragma omp tile' must be a for loop}}
80   #pragma omp tile sizes(5,5)
81   for (int i = 0; i < 7; ++i)
82     ;
83 
84   // expected-error@+2 {{statement after '#pragma omp tile' must be a for loop}}
85   #pragma omp tile sizes(5,5)
86   for (int i = 0; i < 7; ++i) {
87     int k = 3;
88     for (int j = 0; j < 7; ++j)
89       ;
90   }
91 
92   // expected-error@+3 {{expected loop invariant expression}}
93   #pragma omp tile sizes(5,5)
94   for (int i = 0; i < 7; ++i)
95     for (int j = i; j < 7; ++j)
96       ;
97 
98   // expected-error@+3 {{expected loop invariant expression}}
99   #pragma omp tile sizes(5,5)
100   for (int i = 0; i < 7; ++i)
101     for (int j = 0; j < i; ++j)
102       ;
103 
104   // expected-error@+3 {{expected loop invariant expression}}
105   #pragma omp tile sizes(5,5)
106   for (int i = 0; i < 7; ++i)
107     for (int j = 0; j < i; ++j)
108       ;
109 
110   // expected-error@+5 {{expected 3 for loops after '#pragma omp for', but found only 2}}
111   // expected-note@+1 {{as specified in 'collapse' clause}}
112   #pragma omp for collapse(3)
113   #pragma omp tile sizes(5)
114   for (int i = 0; i < 7; ++i)
115     ;
116 
117   // expected-error@+2 {{statement after '#pragma omp tile' must be a for loop}}
118   #pragma omp tile sizes(5)
119   #pragma omp for
120   for (int i = 0; i < 7; ++i)
121     ;
122 
123   // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}}
124   #pragma omp tile sizes(5)
125   for (int i = 0; i/3<7; ++i)
126     ;
127 }
128