blob: 6fa979d652dd2e8be71bc39d3c680dc7997db596 (
plain)
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
|
/* This file contains routines to construct and validate Cilk Plus
constructs within the C and C++ front ends.
Copyright (C) 2013 Free Software Foundation, Inc.
Contributed by Aldy Hernandez <aldyh@redhat.com>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "c-common.h"
/* Validate the body of a _Cilk_for construct or a <#pragma simd> for
loop.
Returns true if there were no errors, false otherwise. */
bool
c_check_cilk_loop (location_t loc, tree decl)
{
if (TREE_THIS_VOLATILE (decl))
{
error_at (loc, "iteration variable cannot be volatile");
return false;
}
return true;
}
/* Validate and emit code for <#pragma simd> clauses. */
tree
c_finish_cilk_clauses (tree clauses)
{
for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c))
{
tree prev = clauses;
/* If a variable appears in a linear clause it cannot appear in
any other OMP clause. */
if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR)
for (tree c2 = clauses; c2; c2 = OMP_CLAUSE_CHAIN (c2))
{
if (c == c2)
continue;
enum omp_clause_code code = OMP_CLAUSE_CODE (c2);
switch (code)
{
case OMP_CLAUSE_LINEAR:
case OMP_CLAUSE_PRIVATE:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_LASTPRIVATE:
case OMP_CLAUSE_REDUCTION:
break;
case OMP_CLAUSE_SAFELEN:
goto next;
default:
gcc_unreachable ();
}
if (OMP_CLAUSE_DECL (c) == OMP_CLAUSE_DECL (c2))
{
error_at (OMP_CLAUSE_LOCATION (c2),
"variable appears in more than one clause");
inform (OMP_CLAUSE_LOCATION (c),
"other clause defined here");
// Remove problematic clauses.
OMP_CLAUSE_CHAIN (prev) = OMP_CLAUSE_CHAIN (c2);
}
next:
prev = c2;
}
}
return clauses;
}
|
