openmp: Add support for iterators in 'target update' clauses (C/C++)

This adds support for iterators in 'to' and 'from' clauses in the
'target update' OpenMP directive.

gcc/c/

	* c-parser.cc (c_parser_omp_clause_from_to): Parse 'iterator' modifier.
	* c-typeck.cc (c_finish_omp_clauses): Finish iterators for to/from
	clauses.

gcc/cp/

	* parser.cc (cp_parser_omp_clause_from_to): Parse 'iterator' modifier.
	* semantics.cc (finish_omp_clauses): Finish iterators for to/from
	clauses.

gcc/

	* gimplify.cc (remove_unused_omp_iterator_vars): Display unused
	variable warning for 'to' and 'from' clauses.
	(gimplify_scan_omp_clauses): Add argument for iterator loop sequence.
	Gimplify the clause decl and size into the iterator loop if iterators
	are used.
	(gimplify_omp_workshare): Add argument for iterator loops sequence
	in call to gimplify_scan_omp_clauses.
	(gimplify_omp_target_update): Call remove_unused_omp_iterator_vars and
	build_omp_iterators_loops.  Add loop sequence as argument when calling
	gimplify_scan_omp_clauses, gimplify_adjust_omp_clauses and building
	the Gimple statement.
	* tree-pretty-print.cc (dump_omp_clause): Call dump_omp_iterators
	for to/from clauses with iterators.
	* tree.cc (omp_clause_num_ops): Add extra operand for OMP_CLAUSE_FROM
	and OMP_CLAUSE_TO.
	* tree.h (OMP_CLAUSE_HAS_ITERATORS): Add check for OMP_CLAUSE_TO and
	OMP_CLAUSE_FROM.
	(OMP_CLAUSE_ITERATORS): Likewise.

gcc/testsuite/

	* c-c++-common/gomp/target-update-iterators-1.c: New.
	* c-c++-common/gomp/target-update-iterators-2.c: New.
	* c-c++-common/gomp/target-update-iterators-3.c: New.

libgomp/

	* target.c (gomp_update): Call gomp_merge_iterator_maps.  Free
	allocated variables.
	* testsuite/libgomp.c-c++-common/target-update-iterators-1.c: New.
	* testsuite/libgomp.c-c++-common/target-update-iterators-2.c: New.
	* testsuite/libgomp.c-c++-common/target-update-iterators-3.c: New.
This commit is contained in:
Kwok Cheung Yeung 2025-08-06 01:07:46 +01:00
parent 8b8b0eada6
commit 87262627fd
15 changed files with 511 additions and 45 deletions

View File

@ -20576,8 +20576,11 @@ c_parser_omp_clause_device_type (c_parser *parser, tree list)
to ( variable-list )
OpenMP 5.1:
from ( [present :] variable-list )
to ( [present :] variable-list ) */
from ( [motion-modifier[,] [motion-modifier[,]...]:] variable-list )
to ( [motion-modifier[,] [motion-modifier[,]...]:] variable-list )
motion-modifier:
present | iterator (iterators-definition) */
static tree
c_parser_omp_clause_from_to (c_parser *parser, enum omp_clause_code kind,
@ -20588,18 +20591,85 @@ c_parser_omp_clause_from_to (c_parser *parser, enum omp_clause_code kind,
if (!parens.require_open (parser))
return list;
bool present = false;
c_token *token = c_parser_peek_token (parser);
int pos = 1, colon_pos = 0;
int iterator_length = 0;
if (token->type == CPP_NAME
&& strcmp (IDENTIFIER_POINTER (token->value), "present") == 0
&& c_parser_peek_2nd_token (parser)->type == CPP_COLON)
while (c_parser_peek_nth_token_raw (parser, pos)->type == CPP_NAME)
{
present = true;
c_parser_consume_token (parser);
c_parser_consume_token (parser);
const char *identifier =
IDENTIFIER_POINTER (c_parser_peek_nth_token_raw (parser, pos)->value);
if (c_parser_peek_nth_token_raw (parser, pos + 1)->type
== CPP_OPEN_PAREN)
{
unsigned int npos = pos + 2;
if (c_parser_check_balanced_raw_token_sequence (parser, &npos)
&& (c_parser_peek_nth_token_raw (parser, npos)->type
== CPP_CLOSE_PAREN))
{
if (strcmp (identifier, "iterator") == 0)
iterator_length = npos - pos + 1;
pos = npos;
}
}
if (c_parser_peek_nth_token_raw (parser, pos + 1)->type == CPP_COMMA)
pos += 2;
else
pos++;
if (c_parser_peek_nth_token_raw (parser, pos)->type == CPP_COLON)
{
colon_pos = pos;
break;
}
}
bool present = false;
tree iterators = NULL_TREE;
for (int pos = 1; pos < colon_pos; ++pos)
{
c_token *token = c_parser_peek_token (parser);
if (token->type == CPP_COMMA)
{
c_parser_consume_token (parser);
continue;
}
const char *p = IDENTIFIER_POINTER (token->value);
if (strcmp ("present", p) == 0)
{
if (present)
{
c_parser_error (parser, "too many %<present%> modifiers");
parens.skip_until_found_close (parser);
return list;
}
present = true;
c_parser_consume_token (parser);
}
else if (strcmp ("iterator", p) == 0)
{
if (iterators)
{
c_parser_error (parser, "too many %<iterator%> modifiers");
parens.skip_until_found_close (parser);
return list;
}
iterators = c_parser_omp_iterators (parser);
pos += iterator_length - 1;
}
else
{
error_at (token->location,
"%qs clause with modifier other than %<iterator%> or "
"%<present%>",
kind == OMP_CLAUSE_TO ? "to" : "from");
parens.skip_until_found_close (parser);
return list;
}
}
if (colon_pos)
c_parser_require (parser, CPP_COLON, "expected %<:%>");
tree nl = c_parser_omp_variable_list (parser, loc, kind, list);
parens.skip_until_found_close (parser);
@ -20607,6 +20677,19 @@ c_parser_omp_clause_from_to (c_parser *parser, enum omp_clause_code kind,
for (tree c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
OMP_CLAUSE_MOTION_PRESENT (c) = 1;
if (iterators)
{
tree block = pop_scope ();
if (iterators == error_mark_node)
iterators = NULL_TREE;
else
TREE_VEC_ELT (iterators, 5) = block;
}
if (iterators)
for (tree c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
OMP_CLAUSE_ITERATORS (c) = iterators;
return nl;
}

View File

@ -16966,6 +16966,9 @@ c_finish_omp_clauses (tree clauses, enum c_omp_region_type ort)
remove = true;
break;
}
/* FALLTHRU */
case OMP_CLAUSE_TO:
case OMP_CLAUSE_FROM:
if (OMP_CLAUSE_ITERATORS (c)
&& c_omp_finish_iterators (OMP_CLAUSE_ITERATORS (c)))
{
@ -16973,8 +16976,6 @@ c_finish_omp_clauses (tree clauses, enum c_omp_region_type ort)
break;
}
/* FALLTHRU */
case OMP_CLAUSE_TO:
case OMP_CLAUSE_FROM:
case OMP_CLAUSE__CACHE_:
{
using namespace omp_addr_tokenizer;

View File

@ -42636,8 +42636,11 @@ cp_parser_omp_clause_doacross (cp_parser *parser, tree list, location_t loc)
to ( variable-list )
OpenMP 5.1:
from ( [present :] variable-list )
to ( [present :] variable-list ) */
from ( [motion-modifier[,] [motion-modifier[,]...]:] variable-list )
to ( [motion-modifier[,] [motion-modifier[,]...]:] variable-list )
motion-modifier:
present | iterator (iterators-definition) */
static tree
cp_parser_omp_clause_from_to (cp_parser *parser, enum omp_clause_code kind,
@ -42646,23 +42649,113 @@ cp_parser_omp_clause_from_to (cp_parser *parser, enum omp_clause_code kind,
if (!cp_parser_require (parser, CPP_OPEN_PAREN, RT_OPEN_PAREN))
return list;
bool present = false;
cp_token *token = cp_lexer_peek_token (parser->lexer);
int pos = 1;
int colon_pos = 0;
int iterator_length = 0;
if (token->type == CPP_NAME
&& strcmp (IDENTIFIER_POINTER (token->u.value), "present") == 0
&& cp_lexer_nth_token_is (parser->lexer, 2, CPP_COLON))
while (cp_lexer_peek_nth_token (parser->lexer, pos)->type == CPP_NAME)
{
present = true;
cp_lexer_consume_token (parser->lexer);
cp_lexer_consume_token (parser->lexer);
const char *identifier =
IDENTIFIER_POINTER (cp_lexer_peek_nth_token (parser->lexer,
pos)->u.value);
if (cp_lexer_nth_token_is (parser->lexer, pos + 1, CPP_OPEN_PAREN))
{
int n = cp_parser_skip_balanced_tokens (parser, pos + 1);
if (n != pos + 1)
{
if (strcmp (identifier, "iterator") == 0)
iterator_length = n - pos;
pos = n - 1;
}
}
if (cp_lexer_peek_nth_token (parser->lexer, pos + 1)->type == CPP_COMMA)
pos += 2;
else
pos++;
if (cp_lexer_peek_nth_token (parser->lexer, pos)->type == CPP_COLON)
{
colon_pos = pos;
break;
}
}
bool present = false;
tree iterators = NULL_TREE;
for (int pos = 1; pos < colon_pos; ++pos)
{
cp_token *token = cp_lexer_peek_token (parser->lexer);
if (token->type == CPP_COMMA)
{
cp_lexer_consume_token (parser->lexer);
continue;
}
const char *p = IDENTIFIER_POINTER (token->u.value);
if (strcmp ("present", p) == 0)
{
if (present)
{
cp_parser_error (parser, "too many %<present%> modifiers");
cp_parser_skip_to_closing_parenthesis (parser,
/*recovering=*/true,
/*or_comma=*/false,
/*consume_paren=*/true);
return list;
}
present = true;
cp_lexer_consume_token (parser->lexer);
}
else if (strcmp ("iterator", p) == 0)
{
if (iterators)
{
cp_parser_error (parser, "too many %<iterator%> modifiers");
cp_parser_skip_to_closing_parenthesis (parser,
/*recovering=*/true,
/*or_comma=*/false,
/*consume_paren=*/true);
return list;
}
begin_scope (sk_omp, NULL);
iterators = cp_parser_omp_iterators (parser);
pos += iterator_length - 1;
}
else
{
error_at (token->location,
"%qs clause with modifier other than %<iterator%> "
"or %<present%>",
kind == OMP_CLAUSE_TO ? "to" : "from");
cp_parser_skip_to_closing_parenthesis (parser,
/*recovering=*/true,
/*or_comma=*/false,
/*consume_paren=*/true);
return list;
}
}
if (colon_pos)
cp_parser_require (parser, CPP_COLON, RT_COLON);
tree nl = cp_parser_omp_var_list_no_open (parser, kind, list, NULL, true);
if (present)
for (tree c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
OMP_CLAUSE_MOTION_PRESENT (c) = 1;
if (iterators)
{
tree block = poplevel (1, 1, 0);
if (iterators == error_mark_node)
iterators = NULL_TREE;
else
TREE_VEC_ELT (iterators, 5) = block;
}
if (iterators)
for (tree c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
OMP_CLAUSE_ITERATORS (c) = iterators;
return nl;
}

View File

@ -9007,6 +9007,9 @@ finish_omp_clauses (tree clauses, enum c_omp_region_type ort)
remove = true;
break;
}
/* FALLTHRU */
case OMP_CLAUSE_TO:
case OMP_CLAUSE_FROM:
if (OMP_CLAUSE_ITERATORS (c)
&& cp_omp_finish_iterators (OMP_CLAUSE_ITERATORS (c)))
{
@ -9014,8 +9017,6 @@ finish_omp_clauses (tree clauses, enum c_omp_region_type ort)
break;
}
/* FALLTHRU */
case OMP_CLAUSE_TO:
case OMP_CLAUSE_FROM:
case OMP_CLAUSE__CACHE_:
{
using namespace omp_addr_tokenizer;

View File

@ -9966,9 +9966,11 @@ remove_unused_omp_iterator_vars (tree *list_p)
if (t == NULL_TREE)
{
need_new_iterators = true;
if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP
&& (OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_TO
|| OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_FROM))
if ((OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP
&& (OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_TO
|| OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_FROM))
|| OMP_CLAUSE_CODE (c) == OMP_CLAUSE_TO
|| OMP_CLAUSE_CODE (c) == OMP_CLAUSE_FROM)
warning_at (OMP_CLAUSE_LOCATION (c), OPT_Wopenmp,
"iterator variable %qE not used in clause "
"expression", DECL_NAME (var));
@ -13582,7 +13584,8 @@ omp_instantiate_implicit_mappers (splay_tree_node n, void *data)
static void
gimplify_scan_omp_clauses (tree *list_p, gimple_seq *pre_p,
enum omp_region_type region_type,
enum tree_code code)
enum tree_code code,
gimple_seq *loops_seq_p = NULL)
{
using namespace omp_addr_tokenizer;
struct gimplify_omp_ctx *ctx, *outer_ctx;
@ -14353,23 +14356,24 @@ gimplify_scan_omp_clauses (tree *list_p, gimple_seq *pre_p,
if (OMP_CLAUSE_SIZE (c) == NULL_TREE)
OMP_CLAUSE_SIZE (c) = DECL_P (decl) ? DECL_SIZE_UNIT (decl)
: TYPE_SIZE_UNIT (TREE_TYPE (decl));
if (gimplify_expr (&OMP_CLAUSE_SIZE (c), pre_p,
NULL, is_gimple_val, fb_rvalue) == GS_ERROR)
gimple_seq *seq_p;
seq_p = enter_omp_iterator_loop_context (c, loops_seq_p, pre_p);
if (gimplify_expr (&OMP_CLAUSE_SIZE (c), seq_p, NULL,
is_gimple_val, fb_rvalue) == GS_ERROR)
{
remove = true;
exit_omp_iterator_loop_context (c);
break;
}
if (!DECL_P (decl))
{
if (gimplify_expr (&OMP_CLAUSE_DECL (c), pre_p,
NULL, is_gimple_lvalue, fb_lvalue)
== GS_ERROR)
{
remove = true;
break;
}
if (gimplify_expr (&OMP_CLAUSE_DECL (c), seq_p, NULL,
is_gimple_lvalue, fb_lvalue) == GS_ERROR)
remove = true;
exit_omp_iterator_loop_context (c);
break;
}
exit_omp_iterator_loop_context (c);
goto do_notice;
case OMP_CLAUSE__MAPPER_BINDING_:
@ -18728,7 +18732,7 @@ gimplify_omp_workshare (tree *expr_p, gimple_seq *pre_p)
if ((ort & ORT_ACC) == 0)
in_omp_construct = false;
gimplify_scan_omp_clauses (&OMP_CLAUSES (expr), pre_p, ort,
TREE_CODE (expr));
TREE_CODE (expr), &iterator_loops_seq);
if (TREE_CODE (expr) == OMP_TARGET)
optimize_target_teams (expr, pre_p);
if ((ort & (ORT_TARGET | ORT_TARGET_DATA)) != 0
@ -18885,10 +18889,16 @@ gimplify_omp_target_update (tree *expr_p, gimple_seq *pre_p)
default:
gcc_unreachable ();
}
gimple_seq iterator_loops_seq = NULL;
remove_unused_omp_iterator_vars (&OMP_STANDALONE_CLAUSES (expr));
build_omp_iterators_loops (&OMP_STANDALONE_CLAUSES (expr),
&iterator_loops_seq);
gimplify_scan_omp_clauses (&OMP_STANDALONE_CLAUSES (expr), pre_p,
ort, TREE_CODE (expr));
ort, TREE_CODE (expr), &iterator_loops_seq);
gimplify_adjust_omp_clauses (pre_p, NULL, &OMP_STANDALONE_CLAUSES (expr),
TREE_CODE (expr));
TREE_CODE (expr), &iterator_loops_seq);
if (TREE_CODE (expr) == OACC_UPDATE
&& omp_find_clause (OMP_STANDALONE_CLAUSES (expr),
OMP_CLAUSE_IF_PRESENT))
@ -18952,7 +18962,8 @@ gimplify_omp_target_update (tree *expr_p, gimple_seq *pre_p)
gcc_unreachable ();
}
}
stmt = gimple_build_omp_target (NULL, kind, OMP_STANDALONE_CLAUSES (expr));
stmt = gimple_build_omp_target (NULL, kind, OMP_STANDALONE_CLAUSES (expr),
iterator_loops_seq);
gimplify_seq_add_stmt (pre_p, stmt);
*expr_p = NULL_TREE;

View File

@ -0,0 +1,21 @@
/* { dg-do compile } */
/* { dg-options "-fopenmp" } */
#define DIM1 17
#define DIM2 39
void f (int **x, float **y)
{
#pragma omp target update to (iterator(i=0:DIM1): x[i][:DIM2])
#pragma omp target update to (iterator(i=0:DIM1): x[i][:DIM2], y[i][:DIM2])
#pragma omp target update to (iterator(i=0:DIM1), present: x[i][:DIM2])
#pragma omp target update to (iterator(i=0:DIM1), iterator(j=0:DIM2): x[i][j]) /* { dg-error "too many 'iterator' modifiers" } */
/* { dg-error "'#pragma omp target update' must contain at least one 'from' or 'to' clauses" "" { target *-*-* } .-1 } */
#pragma omp target update from (iterator(i=0:DIM1), something: x[i][j]) /* { dg-error "'from' clause with modifier other than 'iterator' or 'present'" } */
/* { dg-error "expected '\\)' before 'something'" "" { target c } .-1 } */
/* { dg-error "'#pragma omp target update' must contain at least one 'from' or 'to' clauses" "" { target *-*-* } .-2 } */
}

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@ -0,0 +1,23 @@
/* { dg-do compile } */
/* { dg-options "-fopenmp -fdump-tree-gimple" } */
void f (int *x, float *y, double *z)
{
#pragma omp target update to(iterator(i=0:10): x) /* { dg-warning "iterator variable 'i' not used in clause expression" }*/
;
#pragma omp target update from(iterator(i2=0:10, j2=0:20): x[i2]) /* { dg-warning "iterator variable 'j2' not used in clause expression" }*/
;
#pragma omp target update to(iterator(i3=0:10, j3=0:20, k3=0:30): x[i3+j3], y[j3+k3], z[k3+i3])
/* { dg-warning "iterator variable 'i3' not used in clause expression" "" { target *-*-* } .-1 } */
/* { dg-warning "iterator variable 'j3' not used in clause expression" "" { target *-*-* } .-2 } */
/* { dg-warning "iterator variable 'k3' not used in clause expression" "" { target *-*-* } .-3 } */
;
}
/* { dg-final { scan-tree-dump "update to\\\(x " "gimple" } } */
/* { dg-final { scan-tree-dump "update from\\\(iterator\\\(int i2=0:10:1, loop_label=" "gimple" } } */
/* { dg-final { scan-tree-dump "to\\\(iterator\\\(int i3=0:10:1, int k3=0:30:1, loop_label=" "gimple" } } */
/* { dg-final { scan-tree-dump "to\\\(iterator\\\(int j3=0:20:1, int k3=0:30:1, loop_label=" "gimple" } } */
/* { dg-final { scan-tree-dump "to\\\(iterator\\\(int i3=0:10:1, int j3=0:20:1, loop_label=" "gimple" } } */

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@ -0,0 +1,17 @@
/* { dg-do compile } */
/* { dg-options "-fopenmp -fdump-tree-gimple" } */
#define DIM1 10
#define DIM2 20
#define DIM3 30
void f (int ***x, float ***y, double **z)
{
#pragma omp target update to (iterator(i=0:DIM1, j=0:DIM2): x[i][j][:DIM3], y[i][j][:DIM3])
#pragma omp target update from (iterator(i=0:DIM1): z[i][:DIM2])
}
/* { dg-final { scan-tree-dump-times "if \\(i <= 9\\) goto <D\.\[0-9\]+>; else goto <D\.\[0-9\]+>;" 2 "gimple" } } */
/* { dg-final { scan-tree-dump-times "if \\(j <= 19\\) goto <D\.\[0-9\]+>; else goto <D\.\[0-9\]+>;" 1 "gimple" } } */
/* { dg-final { scan-tree-dump-times "to\\(iterator\\(int i=0:10:1, int j=0:20:1, loop_label=<D\.\[0-9\]+>, elems=omp_iter_data\.\[0-9\]+, index=D\.\[0-9\]+\\):\\*D\.\[0-9\]+" 2 "gimple" } } */
/* { dg-final { scan-tree-dump-times "from\\(iterator\\(int i=0:10:1, loop_label=<D\.\[0-9\]+>, elems=omp_iter_data\.\[0-9\]+, index=D\.\[0-9\]+\\):\\*D\.\[0-9\]+" 1 "gimple" } } */

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@ -1199,6 +1199,11 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
pp_string (pp, "from(");
if (OMP_CLAUSE_MOTION_PRESENT (clause))
pp_string (pp, "present:");
if (OMP_CLAUSE_ITERATORS (clause))
{
dump_omp_iterators (pp, OMP_CLAUSE_ITERATORS (clause), spc, flags);
pp_colon (pp);
}
dump_generic_node (pp, OMP_CLAUSE_DECL (clause),
spc, flags, false);
goto print_clause_size;
@ -1207,6 +1212,11 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
pp_string (pp, "to(");
if (OMP_CLAUSE_MOTION_PRESENT (clause))
pp_string (pp, "present:");
if (OMP_CLAUSE_ITERATORS (clause))
{
dump_omp_iterators (pp, OMP_CLAUSE_ITERATORS (clause), spc, flags);
pp_colon (pp);
}
dump_generic_node (pp, OMP_CLAUSE_DECL (clause),
spc, flags, false);
goto print_clause_size;

View File

@ -323,8 +323,8 @@ unsigned const char omp_clause_num_ops[] =
1, /* OMP_CLAUSE_IS_DEVICE_PTR */
1, /* OMP_CLAUSE_INCLUSIVE */
1, /* OMP_CLAUSE_EXCLUSIVE */
2, /* OMP_CLAUSE_FROM */
2, /* OMP_CLAUSE_TO */
3, /* OMP_CLAUSE_FROM */
3, /* OMP_CLAUSE_TO */
3, /* OMP_CLAUSE_MAP (update walk_tree_1 if this is changed) */
1, /* OMP_CLAUSE_HAS_DEVICE_ADDR */
1, /* OMP_CLAUSE_DOACROSS */

View File

@ -1660,11 +1660,13 @@ class auto_suppress_location_wrappers
#define OMP_CLAUSE_LOCATION(NODE) (OMP_CLAUSE_CHECK (NODE))->omp_clause.locus
#define OMP_CLAUSE_HAS_ITERATORS(NODE) \
(OMP_CLAUSE_CODE (NODE) == OMP_CLAUSE_MAP \
((OMP_CLAUSE_CODE (NODE) == OMP_CLAUSE_FROM \
|| OMP_CLAUSE_CODE (NODE) == OMP_CLAUSE_TO \
|| OMP_CLAUSE_CODE (NODE) == OMP_CLAUSE_MAP) \
&& OMP_CLAUSE_ITERATORS (NODE))
#define OMP_CLAUSE_ITERATORS(NODE) \
OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
OMP_CLAUSE_MAP, \
OMP_CLAUSE_FROM, \
OMP_CLAUSE_MAP), 2)
/* True on OMP_FOR and other OpenMP/OpenACC looping constructs if the loop nest

View File

@ -2372,6 +2372,8 @@ gomp_update (struct gomp_device_descr *devicep, size_t mapnum, void **hostaddrs,
size_t i;
struct splay_tree_key_s cur_node;
const int typemask = short_mapkind ? 0xff : 0x7;
bool iterators_p = false;
size_t *iterator_count = NULL;
if (!devicep)
return;
@ -2379,6 +2381,10 @@ gomp_update (struct gomp_device_descr *devicep, size_t mapnum, void **hostaddrs,
if (mapnum == 0)
return;
if (short_mapkind) /* OpenMP */
iterators_p = gomp_merge_iterator_maps (&mapnum, &hostaddrs, &sizes,
&kinds, &iterator_count);
gomp_mutex_lock (&devicep->lock);
if (devicep->state == GOMP_DEVICE_FINALIZED)
{
@ -2472,6 +2478,14 @@ gomp_update (struct gomp_device_descr *devicep, size_t mapnum, void **hostaddrs,
}
}
gomp_mutex_unlock (&devicep->lock);
if (iterators_p)
{
free (hostaddrs);
free (sizes);
free (kinds);
free (iterator_count);
}
}
static struct gomp_offload_icv_list *

View File

@ -0,0 +1,65 @@
/* { dg-do run } */
/* Test target enter data and target update to the target using map
iterators. */
#include <stdlib.h>
#define DIM1 8
#define DIM2 15
int mkarray (int *x[])
{
int expected = 0;
for (int i = 0; i < DIM1; i++)
{
x[i] = (int *) malloc (DIM2 * sizeof (int));
for (int j = 0; j < DIM2; j++)
{
x[i][j] = rand ();
expected += x[i][j];
}
}
return expected;
}
int main (void)
{
int *x[DIM1];
int sum;
int expected = mkarray (x);
#pragma omp target enter data map(to: x[:DIM1])
#pragma omp target enter data map(iterator(i=0:DIM1), to: x[i][:DIM2])
#pragma omp target map(from: sum)
{
sum = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
sum += x[i][j];
}
if (sum != expected)
return 1;
expected = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
{
x[i][j] *= rand ();
expected += x[i][j];
}
#pragma omp target update to(iterator(i=0:DIM1): x[i][:DIM2])
#pragma omp target map(from: sum)
{
sum = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
sum += x[i][j];
}
return sum != expected;
}

View File

@ -0,0 +1,58 @@
/* { dg-do run } */
/* { dg-require-effective-target offload_device_nonshared_as } */
/* Test target enter data and target update from the target using map
iterators. */
#include <stdlib.h>
#define DIM1 8
#define DIM2 15
void mkarray (int *x[])
{
for (int i = 0; i < DIM1; i++)
{
x[i] = (int *) malloc (DIM2 * sizeof (int));
for (int j = 0; j < DIM2; j++)
x[i][j] = 0;
}
}
int main (void)
{
int *x[DIM1];
int sum, expected;
mkarray (x);
#pragma omp target enter data map(alloc: x[:DIM1])
#pragma omp target enter data map(iterator(i=0:DIM1), to: x[i][:DIM2])
#pragma omp target map(from: expected)
{
expected = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
{
x[i][j] = (i + 1) * (j + 2);
expected += x[i][j];
}
}
/* Host copy of x should remain unchanged. */
sum = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
sum += x[i][j];
if (sum != 0)
return 1;
#pragma omp target update from(iterator(i=0:DIM1): x[i][:DIM2])
/* Host copy should now be updated. */
sum = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
sum += x[i][j];
return sum - expected;
}

View File

@ -0,0 +1,67 @@
/* { dg-do run } */
/* { dg-require-effective-target offload_device_nonshared_as } */
/* Test target enter data and target update to the target using map
iterators with a function. */
#include <stdlib.h>
#define DIM1 8
#define DIM2 15
void mkarray (int *x[])
{
for (int i = 0; i < DIM1; i++)
{
x[i] = (int *) malloc (DIM2 * sizeof (int));
for (int j = 0; j < DIM2; j++)
x[i][j] = rand ();
}
}
int f (int i)
{
return i * 2;
}
int main (void)
{
int *x[DIM1], x_new[DIM1][DIM2];
int sum, expected;
mkarray (x);
#pragma omp target enter data map(alloc: x[:DIM1])
#pragma omp target enter data map(iterator(i=0:DIM1), to: x[i][:DIM2])
/* Update x on host. */
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
{
x_new[i][j] = x[i][j];
x[i][j] = (i + 1) * (j + 2);
}
/* Update a subset of x on target. */
#pragma omp target update to(iterator(i=0:DIM1/2): x[f (i)][:DIM2])
#pragma omp target map(from: sum)
{
sum = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
sum += x[i][j];
}
/* Calculate expected value on host. */
for (int i = 0; i < DIM1/2; i++)
for (int j = 0; j < DIM2; j++)
x_new[f (i)][j] = x[f (i)][j];
expected = 0;
for (int i = 0; i < DIM1; i++)
for (int j = 0; j < DIM2; j++)
expected += x_new[i][j];
return sum - expected;
}