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OpenMP: Move omp requires checks to libgomp 

Handle reverse_offload, unified_address, and unified_shared_memory
requirements in libgomp by saving them alongside the offload table.
When the device lto1 runs, it extracts the data for mkoffload. The
latter than passes the value on to GOMP_offload_register_ver.

lto1 (either the host one, with -flto [+ ENABLE_OFFLOADING], or in the
offload-device lto1) also does the the consistency check is done,
erroring out when the 'omp requires' clause use is inconsistent.

For all in-principle supported devices, if a requirement cannot be fulfilled,
the device is excluded from the (supported) devices list. Currently, none of
those requirements are marked as supported for any of the non-host devices.

gcc/c/ChangeLog:

	* c-parser.cc (c_parser_omp_target_data, c_parser_omp_target_update,
	c_parser_omp_target_enter_data, c_parser_omp_target_exit_data): Set
	OMP_REQUIRES_TARGET_USED.
	(c_parser_omp_requires): Remove sorry.

gcc/ChangeLog:

	* config/gcn/mkoffload.cc (process_asm): Write '#include <stdint.h>'.
	(process_obj): Pass omp_requires_mask to GOMP_offload_register_ver.
	(main): Ask lto1 to obtain omp_requires_mask and pass it on.
	* config/nvptx/mkoffload.cc (process, main): Likewise.
	* lto-cgraph.cc (omp_requires_to_name): New.
	(input_offload_tables): Save omp_requires_mask.
	(output_offload_tables): Read it, check for consistency,
	save value for mkoffload.
	* omp-low.cc (lower_omp_target): Force output_offloadtables
	call for OMP_REQUIRES_TARGET_USED.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_omp_target_data,
	cp_parser_omp_target_enter_data, cp_parser_omp_target_exit_data,
	cp_parser_omp_target_update): Set OMP_REQUIRES_TARGET_USED.
	(cp_parser_omp_requires): Remove sorry.

gcc/fortran/ChangeLog:

	* openmp.cc (gfc_match_omp_requires): Remove sorry.
	* parse.cc (decode_omp_directive): Don't regard 'declare target'
	as target usage for 'omp requires'; add more flags to
	omp_requires_mask.

include/ChangeLog:

	* gomp-constants.h (GOMP_VERSION): Bump to 2.
	(GOMP_REQUIRES_UNIFIED_ADDRESS, GOMP_REQUIRES_UNIFIED_SHARED_MEMORY,
	GOMP_REQUIRES_REVERSE_OFFLOAD, GOMP_REQUIRES_TARGET_USED):
	New defines.

libgomp/ChangeLog:

	* libgomp-plugin.h (GOMP_OFFLOAD_get_num_devices): Add
	omp_requires_mask arg.
	* plugin/plugin-gcn.c (GOMP_OFFLOAD_get_num_devices): Likewise;
	return -1 when device available but omp_requires_mask != 0.
	* plugin/plugin-nvptx.c (GOMP_OFFLOAD_get_num_devices): Likewise.
	* oacc-host.c (host_get_num_devices, host_openacc_get_property):
	Update call.
	* oacc-init.c (resolve_device, acc_init_1, acc_shutdown_1,
	goacc_attach_host_thread_to_device, acc_get_num_devices,
	acc_set_device_num, get_property_any): Likewise.
	* target.c (omp_requires_mask): New global var.
	(gomp_requires_to_name): New.
	(GOMP_offload_register_ver): Handle passed omp_requires_mask.
	(gomp_target_init): Handle omp_requires_mask.
	* libgomp.texi (OpenMP 5.0): Update requires impl. status.
	(OpenMP 5.1): Add a missed item.
	(OpenMP 5.2): Mark linear-clause change as supported in C/C++.
	* testsuite/libgomp.c-c++-common/requires-1-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-1.c: New test.
	* testsuite/libgomp.c-c++-common/requires-2-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-2.c: New test.
	* testsuite/libgomp.c-c++-common/requires-3-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-3.c: New test.
	* testsuite/libgomp.c-c++-common/requires-4-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-4.c: New test.
	* testsuite/libgomp.c-c++-common/requires-5-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-5.c: New test.
	* testsuite/libgomp.c-c++-common/requires-6.c: New test.
	* testsuite/libgomp.c-c++-common/requires-7-aux.c: New test.
	* testsuite/libgomp.c-c++-common/requires-7.c: New test.
	* testsuite/libgomp.fortran/requires-1-aux.f90: New test.
	* testsuite/libgomp.fortran/requires-1.f90: New test.

liboffloadmic/ChangeLog:

	* plugin/libgomp-plugin-intelmic.cpp (GOMP_OFFLOAD_get_num_devices):
	Return -1 when device available but omp_requires_mask != 0.

gcc/testsuite/ChangeLog:

	* c-c++-common/gomp/requires-4.c: Update dg-*.
	* c-c++-common/gomp/reverse-offload-1.c: Likewise.
	* c-c++-common/gomp/target-device-ancestor-2.c: Likewise.
	* c-c++-common/gomp/target-device-ancestor-3.c: Likewise.
	* c-c++-common/gomp/target-device-ancestor-4.c: Likewise.
	* c-c++-common/gomp/target-device-ancestor-5.c: Likewise.
	* gfortran.dg/gomp/target-device-ancestor-3.f90: Likewise.
	* gfortran.dg/gomp/target-device-ancestor-4.f90: Likewise.
	* gfortran.dg/gomp/target-device-ancestor-5.f90: Likewise.
	* gfortran.dg/gomp/target-device-ancestor-2.f90: Likewise. Move
	post-FE checks to ...
	* gfortran.dg/gomp/target-device-ancestor-2a.f90: ... this new file.
	* gfortran.dg/gomp/requires-8.f90: Update as we don't regard
	'declare target' for the 'requires' usage requirement.

Co-authored-by: Chung-Lin Tang <cltang@codesourcery.com>
Co-authored-by: Thomas Schwinge <thomas@codesourcery.com>
This commit is contained in:
Tobias Burnus 2022-07-04 13:51:02 +02:00
parent 10b502fb78
commit 683f118439
44 changed files with 716 additions and 132 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
gcc/c/c-parser.cc
View File

@ -20915,6 +20915,10 @@ c_parser_omp_teams (location_t loc, c_parser *parser,
static tree
c_parser_omp_target_data (location_t loc, c_parser *parser, bool *if_p)
{
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= c_parser_omp_all_clauses (parser, OMP_TARGET_DATA_CLAUSE_MASK,
"#pragma omp target data");
@ -21010,6 +21014,10 @@ c_parser_omp_target_update (location_t loc, c_parser *parser,
return false;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree stmt = make_node (OMP_TARGET_UPDATE);
TREE_TYPE (stmt) = void_type_node;
OMP_TARGET_UPDATE_CLAUSES (stmt) = clauses;
@ -21057,6 +21065,10 @@ c_parser_omp_target_enter_data (location_t loc, c_parser *parser,
return true;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= c_parser_omp_all_clauses (parser, OMP_TARGET_ENTER_DATA_CLAUSE_MASK,
"#pragma omp target enter data");
@ -21151,6 +21163,10 @@ c_parser_omp_target_exit_data (location_t loc, c_parser *parser,
return true;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= c_parser_omp_all_clauses (parser, OMP_TARGET_EXIT_DATA_CLAUSE_MASK,
"#pragma omp target exit data");
@ -22779,9 +22795,6 @@ c_parser_omp_requires (c_parser *parser)
c_parser_skip_to_pragma_eol (parser, false);
return;
}
if (p && this_req != OMP_REQUIRES_DYNAMIC_ALLOCATORS)
sorry_at (cloc, "%qs clause on %<requires%> directive not "
"supported yet", p);
if (p)
c_parser_consume_token (parser);
if (this_req)

27
gcc/config/gcn/mkoffload.cc
View File

@ -611,6 +611,7 @@ process_asm (FILE *in, FILE *out, FILE *cfile)
struct regcount *regcounts = XOBFINISH (&regcounts_os, struct regcount *);
fprintf (cfile, "#include <stdlib.h>\n");
fprintf (cfile, "#include <stdint.h>\n");
fprintf (cfile, "#include <stdbool.h>\n\n");
fprintf (cfile, "static const int gcn_num_vars = %d;\n\n", var_count);
@ -664,7 +665,7 @@ process_asm (FILE *in, FILE *out, FILE *cfile)
/* Embed an object file into a C source file. */
static void
process_obj (FILE *in, FILE *cfile)
process_obj (FILE *in, FILE *cfile, uint32_t omp_requires)
{
size_t len = 0;
const char *input = read_file (in, &len);
@ -692,16 +693,18 @@ process_obj (FILE *in, FILE *cfile)
fprintf (cfile,
"static const struct gcn_image_desc {\n"
" uintptr_t omp_requires_mask;\n"
" const struct gcn_image *gcn_image;\n"
" unsigned kernel_count;\n"
" const struct hsa_kernel_description *kernel_infos;\n"
" unsigned global_variable_count;\n"
"} target_data = {\n"
" %d,\n"
" &gcn_image,\n"
" sizeof (gcn_kernels) / sizeof (gcn_kernels[0]),\n"
" gcn_kernels,\n"
" gcn_num_vars\n"
"};\n\n");
"};\n\n", omp_requires);
fprintf (cfile,
"#ifdef __cplusplus\n"
@ -1077,9 +1080,27 @@ main (int argc, char **argv)
unsetenv ("COMPILER_PATH");
unsetenv ("LIBRARY_PATH");
char *omp_requires_file;
if (save_temps)
omp_requires_file = concat (dumppfx, ".mkoffload.omp_requires", NULL);
else
omp_requires_file = make_temp_file (".mkoffload.omp_requires");
/* Run the compiler pass. */
xputenv (concat ("GCC_OFFLOAD_OMP_REQUIRES_FILE=", omp_requires_file, NULL));
fork_execute (cc_argv[0], CONST_CAST (char **, cc_argv), true, ".gcc_args");
obstack_free (&cc_argv_obstack, NULL);
unsetenv("GCC_OFFLOAD_OMP_REQUIRES_FILE");
in = fopen (omp_requires_file, "rb");
if (!in)
fatal_error (input_location, "cannot open omp_requires file %qs",
omp_requires_file);
uint32_t omp_requires;
if (fread (&omp_requires, sizeof (omp_requires), 1, in) != 1)
fatal_error (input_location, "cannot read omp_requires file %qs",
omp_requires_file);
fclose (in);
in = fopen (gcn_s1_name, "r");
if (!in)
@ -1102,7 +1123,7 @@ main (int argc, char **argv)
if (!in)
fatal_error (input_location, "cannot open intermediate gcn obj file");
process_obj (in, cfile);
process_obj (in, cfile, omp_requires);
fclose (in);

29
gcc/config/nvptx/mkoffload.cc
View File

@ -231,7 +231,7 @@ access_check (const char *name, int mode)
}
static void
process (FILE *in, FILE *out)
process (FILE *in, FILE *out, uint32_t omp_requires)
{
size_t len = 0;
const char *input = read_file (in, &len);
@ -240,6 +240,8 @@ process (FILE *in, FILE *out)
unsigned obj_count = 0;
unsigned ix;
fprintf (out, "#include <stdint.h>\n\n");
/* Dump out char arrays for each PTX object file. These are
terminated by a NUL. */
for (size_t i = 0; i != len;)
@ -309,6 +311,7 @@ process (FILE *in, FILE *out)
fprintf (out,
"static const struct nvptx_tdata {\n"
" uintptr_t omp_requires_mask;\n"
" const struct ptx_obj *ptx_objs;\n"
" unsigned ptx_num;\n"
" const char *const *var_names;\n"
@ -316,12 +319,12 @@ process (FILE *in, FILE *out)
" const struct nvptx_fn *fn_names;\n"
" unsigned fn_num;\n"
"} target_data = {\n"
" ptx_objs, sizeof (ptx_objs) / sizeof (ptx_objs[0]),\n"
" %d, ptx_objs, sizeof (ptx_objs) / sizeof (ptx_objs[0]),\n"
" var_mappings,"
" sizeof (var_mappings) / sizeof (var_mappings[0]),\n"
" func_mappings,"
" sizeof (func_mappings) / sizeof (func_mappings[0])\n"
"};\n\n");
"};\n\n", omp_requires);
fprintf (out, "#ifdef __cplusplus\n"
"extern \"C\" {\n"
@ -583,19 +586,37 @@ main (int argc, char **argv)
unsetenv ("COMPILER_PATH");
unsetenv ("LIBRARY_PATH");
char *omp_requires_file;
if (save_temps)
omp_requires_file = concat (dumppfx, ".mkoffload.omp_requires", NULL);
else
omp_requires_file = make_temp_file (".mkoffload.omp_requires");
xputenv (concat ("GCC_OFFLOAD_OMP_REQUIRES_FILE=", omp_requires_file, NULL));
fork_execute (new_argv[0], CONST_CAST (char **, new_argv), true,
".gcc_args");
obstack_free (&argv_obstack, NULL);
unsetenv("GCC_OFFLOAD_OMP_REQUIRES_FILE");
xputenv (concat ("GCC_EXEC_PREFIX=", execpath, NULL));
xputenv (concat ("COMPILER_PATH=", cpath, NULL));
xputenv (concat ("LIBRARY_PATH=", lpath, NULL));
in = fopen (omp_requires_file, "rb");
if (!in)
fatal_error (input_location, "cannot open omp_requires file %qs",
omp_requires_file);
uint32_t omp_requires;
if (fread (&omp_requires, sizeof (omp_requires), 1, in) != 1)
fatal_error (input_location, "cannot read omp_requires file %qs",
omp_requires_file);
fclose (in);
in = fopen (ptx_name, "r");
if (!in)
fatal_error (input_location, "cannot open intermediate ptx file");
process (in, out);
process (in, out, omp_requires);
fclose (in);
}

19
gcc/cp/parser.cc
View File

@ -44329,6 +44329,10 @@ cp_parser_omp_teams (cp_parser *parser, cp_token *pragma_tok,
static tree
cp_parser_omp_target_data (cp_parser *parser, cp_token *pragma_tok, bool *if_p)
{
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= cp_parser_omp_all_clauses (parser, OMP_TARGET_DATA_CLAUSE_MASK,
"#pragma omp target data", pragma_tok);
@ -44432,6 +44436,10 @@ cp_parser_omp_target_enter_data (cp_parser *parser, cp_token *pragma_tok,
return true;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= cp_parser_omp_all_clauses (parser, OMP_TARGET_ENTER_DATA_CLAUSE_MASK,
"#pragma omp target enter data", pragma_tok);
@ -44531,6 +44539,10 @@ cp_parser_omp_target_exit_data (cp_parser *parser, cp_token *pragma_tok,
return true;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree clauses
= cp_parser_omp_all_clauses (parser, OMP_TARGET_EXIT_DATA_CLAUSE_MASK,
"#pragma omp target exit data", pragma_tok);
@ -44625,6 +44637,10 @@ cp_parser_omp_target_update (cp_parser *parser, cp_token *pragma_tok,
return true;
}
if (flag_openmp)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask | OMP_REQUIRES_TARGET_USED);
tree stmt = make_node (OMP_TARGET_UPDATE);
TREE_TYPE (stmt) = void_type_node;
OMP_TARGET_UPDATE_CLAUSES (stmt) = clauses;
@ -46919,9 +46935,6 @@ cp_parser_omp_requires (cp_parser *parser, cp_token *pragma_tok)
cp_parser_skip_to_pragma_eol (parser, pragma_tok);
return false;
}
if (p && this_req != OMP_REQUIRES_DYNAMIC_ALLOCATORS)
sorry_at (cloc, "%qs clause on %<requires%> directive not "
"supported yet", p);
if (p)
cp_lexer_consume_token (parser->lexer);
if (this_req)

4
gcc/fortran/openmp.cc
View File

@ -5488,10 +5488,6 @@ gfc_match_omp_requires (void)
else
goto error;
if (requires_clause & ~(OMP_REQ_ATOMIC_MEM_ORDER_MASK
| OMP_REQ_DYNAMIC_ALLOCATORS))
gfc_error_now ("Sorry, %qs clause at %L on REQUIRES directive is not "
"yet supported", clause, &old_loc);
if (!gfc_omp_requires_add_clause (requires_clause, clause, &old_loc, NULL))
goto error;
requires_clauses |= requires_clause;

22
gcc/fortran/parse.cc
View File

@ -1168,7 +1168,8 @@ decode_omp_directive (void)
}
switch (ret)
{
case ST_OMP_DECLARE_TARGET:
/* Set omp_target_seen; exclude ST_OMP_DECLARE_TARGET.
FIXME: Get clarification, cf. OpenMP Spec Issue #3240. */
case ST_OMP_TARGET:
case ST_OMP_TARGET_DATA:
case ST_OMP_TARGET_ENTER_DATA:
@ -6879,11 +6880,14 @@ done:
/* Fixup for external procedures and resolve 'omp requires'. */
int omp_requires;
bool omp_target_seen;
omp_requires = 0;
omp_target_seen = false;
for (gfc_current_ns = gfc_global_ns_list; gfc_current_ns;
gfc_current_ns = gfc_current_ns->sibling)
{
omp_requires |= gfc_current_ns->omp_requires;
omp_target_seen |= gfc_current_ns->omp_target_seen;
gfc_check_externals (gfc_current_ns);
}
for (gfc_current_ns = gfc_global_ns_list; gfc_current_ns;
@ -6908,6 +6912,22 @@ done:
break;
}
if (omp_target_seen)
omp_requires_mask = (enum omp_requires) (omp_requires_mask
| OMP_REQUIRES_TARGET_USED);
if (omp_requires & OMP_REQ_REVERSE_OFFLOAD)
omp_requires_mask = (enum omp_requires) (omp_requires_mask
| OMP_REQUIRES_REVERSE_OFFLOAD);
if (omp_requires & OMP_REQ_UNIFIED_ADDRESS)
omp_requires_mask = (enum omp_requires) (omp_requires_mask
| OMP_REQUIRES_UNIFIED_ADDRESS);
if (omp_requires & OMP_REQ_UNIFIED_SHARED_MEMORY)
omp_requires_mask
= (enum omp_requires) (omp_requires_mask
| OMP_REQUIRES_UNIFIED_SHARED_MEMORY);
if (omp_requires & OMP_REQ_DYNAMIC_ALLOCATORS)
omp_requires_mask = (enum omp_requires) (omp_requires_mask
| OMP_REQUIRES_DYNAMIC_ALLOCATORS);
/* Do the parse tree dump. */
gfc_current_ns = flag_dump_fortran_original ? gfc_global_ns_list : NULL;

117
gcc/lto-cgraph.cc
View File

@ -37,6 +37,7 @@ along with GCC; see the file COPYING3. If not see
#include "pass_manager.h"
#include "ipa-utils.h"
#include "omp-offload.h"
#include "omp-general.h"
#include "stringpool.h"
#include "attribs.h"
#include "alloc-pool.h"
@ -1068,7 +1069,10 @@ read_string (class lto_input_block *ib)
void
output_offload_tables (void)
{
if (vec_safe_is_empty (offload_funcs) && vec_safe_is_empty (offload_vars))
bool output_requires = (flag_openmp
&& (omp_requires_mask & OMP_REQUIRES_TARGET_USED) != 0);
if (vec_safe_is_empty (offload_funcs) && vec_safe_is_empty (offload_vars)
&& !output_requires)
return;
struct lto_simple_output_block *ob
@ -1098,6 +1102,19 @@ output_offload_tables (void)
(*offload_vars)[i]);
}
if (output_requires)
{
HOST_WIDE_INT val = ((HOST_WIDE_INT) omp_requires_mask
& (OMP_REQUIRES_UNIFIED_ADDRESS
| OMP_REQUIRES_UNIFIED_SHARED_MEMORY
| OMP_REQUIRES_REVERSE_OFFLOAD
| OMP_REQUIRES_TARGET_USED));
/* (Mis)use LTO_symtab_edge for this variable. */
streamer_write_enum (ob->main_stream, LTO_symtab_tags,
LTO_symtab_last_tag, LTO_symtab_edge);
streamer_write_hwi_stream (ob->main_stream, val);
}
streamer_write_uhwi_stream (ob->main_stream, 0);
lto_destroy_simple_output_block (ob);
@ -1764,6 +1781,20 @@ input_symtab (void)
}
}
static void
omp_requires_to_name (char *buf, size_t size, HOST_WIDE_INT requires_mask)
{
char *end = buf + size, *p = buf;
if (requires_mask & GOMP_REQUIRES_UNIFIED_ADDRESS)
p += snprintf (p, end - p, "unified_address");
if (requires_mask & GOMP_REQUIRES_UNIFIED_SHARED_MEMORY)
p += snprintf (p, end - p, "%sunified_shared_memory",
(p == buf ? "" : ", "));
if (requires_mask & GOMP_REQUIRES_REVERSE_OFFLOAD)
p += snprintf (p, end - p, "%sreverse_offload",
(p == buf ? "" : ", "));
}
/* Input function/variable tables that will allow libgomp to look up offload
target code, and store them into OFFLOAD_FUNCS and OFFLOAD_VARS. */
@ -1773,6 +1804,10 @@ input_offload_tables (bool do_force_output)
struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data ();
struct lto_file_decl_data *file_data;
unsigned int j = 0;
const char *requires_fn = NULL;
tree requires_decl = NULL_TREE;
omp_requires_mask = (omp_requires) 0;
while ((file_data = file_data_vec[j++]))
{
@ -1784,6 +1819,7 @@ input_offload_tables (bool do_force_output)
if (!ib)
continue;
tree tmp_decl = NULL_TREE;
enum LTO_symtab_tags tag
= streamer_read_enum (ib, LTO_symtab_tags, LTO_symtab_last_tag);
while (tag)
@ -1799,6 +1835,7 @@ input_offload_tables (bool do_force_output)
LTO mode. */
if (do_force_output)
cgraph_node::get (fn_decl)->mark_force_output ();
tmp_decl = fn_decl;
}
else if (tag == LTO_symtab_variable)
{
@ -1810,6 +1847,72 @@ input_offload_tables (bool do_force_output)
may be no refs to var_decl in offload LTO mode. */
if (do_force_output)
varpool_node::get (var_decl)->force_output = 1;
tmp_decl = var_decl;
}
else if (tag == LTO_symtab_edge)
{
static bool error_emitted = false;
HOST_WIDE_INT val = streamer_read_hwi (ib);
if (omp_requires_mask == 0)
{
omp_requires_mask = (omp_requires) val;
requires_decl = tmp_decl;
requires_fn = file_data->file_name;
}
else if (omp_requires_mask != val && !error_emitted)
{
const char *fn1 = requires_fn;
if (requires_decl != NULL_TREE)
{
while (DECL_CONTEXT (requires_decl) != NULL_TREE
&& TREE_CODE (requires_decl) != TRANSLATION_UNIT_DECL)
requires_decl = DECL_CONTEXT (requires_decl);
if (requires_decl != NULL_TREE)
fn1 = IDENTIFIER_POINTER (DECL_NAME (requires_decl));
}
const char *fn2 = file_data->file_name;
if (tmp_decl != NULL_TREE)
{
while (DECL_CONTEXT (tmp_decl) != NULL_TREE
&& TREE_CODE (tmp_decl) != TRANSLATION_UNIT_DECL)
tmp_decl = DECL_CONTEXT (tmp_decl);
if (tmp_decl != NULL_TREE)
fn2 = IDENTIFIER_POINTER (DECL_NAME (requires_decl));
}
char buf1[sizeof ("unified_address, unified_shared_memory, "
"reverse_offload")];
char buf2[sizeof ("unified_address, unified_shared_memory, "
"reverse_offload")];
omp_requires_to_name (buf2, sizeof (buf2),
val != OMP_REQUIRES_TARGET_USED
? val
: (HOST_WIDE_INT) omp_requires_mask);
if (val != OMP_REQUIRES_TARGET_USED
&& omp_requires_mask != OMP_REQUIRES_TARGET_USED)
{
omp_requires_to_name (buf1, sizeof (buf1),
omp_requires_mask);
error ("OpenMP %<requires%> directive with non-identical "
"clauses in multiple compilation units: %qs vs. "
"%qs", buf1, buf2);
inform (UNKNOWN_LOCATION, "%qs has %qs", fn1, buf1);
inform (UNKNOWN_LOCATION, "%qs has %qs", fn2, buf2);
}
else
{
error ("OpenMP %<requires%> directive with %qs specified "
"only in some compilation units", buf2);
inform (UNKNOWN_LOCATION, "%qs has %qs",
val != OMP_REQUIRES_TARGET_USED ? fn2 : fn1,
buf2);
inform (UNKNOWN_LOCATION, "but %qs has not",
val != OMP_REQUIRES_TARGET_USED ? fn1 : fn2);
}
error_emitted = true;
}
}
else
fatal_error (input_location,
@ -1821,6 +1924,18 @@ input_offload_tables (bool do_force_output)
lto_destroy_simple_input_block (file_data, LTO_section_offload_table,
ib, data, len);
}
#ifdef ACCEL_COMPILER
char *omp_requires_file = getenv ("GCC_OFFLOAD_OMP_REQUIRES_FILE");
if (omp_requires_file == NULL || omp_requires_file[0] == '\0')
fatal_error (input_location, "GCC_OFFLOAD_OMP_REQUIRES_FILE unset");
FILE *f = fopen (omp_requires_file, "wb");
if (!f)
fatal_error (input_location, "Cannot open omp_requires file %qs",
omp_requires_file);
uint32_t req_mask = omp_requires_mask;
fwrite (&req_mask, sizeof (req_mask), 1, f);
fclose (f);
#endif
}
/* True when we need optimization summary for NODE. */

5
gcc/omp-low.cc
View File

@ -12701,6 +12701,11 @@ lower_omp_target (gimple_stmt_iterator *gsi_p, omp_context *ctx)
gcc_unreachable ();
}
/* Ensure that requires map is written via output_offload_tables, even if only
'target (enter/exit) data' is used in the translation unit. */
if (ENABLE_OFFLOADING && (omp_requires_mask & OMP_REQUIRES_TARGET_USED))
g->have_offload = true;
clauses = gimple_omp_target_clauses (stmt);
gimple_seq dep_ilist = NULL;

2
gcc/testsuite/c-c++-common/gomp/requires-4.c
View File

@ -9,5 +9,3 @@ foo (void)
#pragma omp requires unified_shared_memory /* { dg-error "'unified_shared_memory' clause used lexically after first target construct or offloading API" } */
#pragma omp requires unified_address /* { dg-error "'unified_address' clause used lexically after first target construct or offloading API" } */
#pragma omp requires reverse_offload /* { dg-error "'reverse_offload' clause used lexically after first target construct or offloading API" } */
/* { dg-prune-output "not supported yet" } */

2
gcc/testsuite/c-c++-common/gomp/reverse-offload-1.c
View File

@ -43,7 +43,7 @@ tg_fn (int *x, int *y)
x2 = x2 + 2 + called_in_target1 ();
y2 = y2 + 7;
#pragma omp target device(ancestor : 1) map(tofrom: x2)
#pragma omp target device(ancestor : 1) map(tofrom: x2) /* { dg-message "sorry, unimplemented: 'ancestor' not yet supported" } */
check_offload(&x2, &y2);
if (x2 != 2+2+3+42 || y2 != 3 + 7)

10
gcc/testsuite/c-c++-common/gomp/target-device-ancestor-2.c
View File

@ -1,13 +1,11 @@
/* { dg-do compile } */
#pragma omp requires reverse_offload /* { dg-message "sorry, unimplemented: 'reverse_offload' clause on 'requires' directive not supported yet" } */
#pragma omp requires reverse_offload
void
foo (int n)
{
/* The following test is marked with 'xfail' because a previous 'sorry' from
'reverse_offload' suppresses the 'sorry' for 'ancestor'. */
#pragma omp target device (ancestor: 1) /* { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } } */
#pragma omp target device (ancestor: 1)
;
@ -19,9 +17,9 @@ foo (int n)
#pragma omp target device (ancestor : 42) /* { dg-error "the 'device' clause expression must evaluate to '1'" } */
;
#pragma omp target device (ancestor : n) /* { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } } */
#pragma omp target device (ancestor : n)
;
#pragma omp target device (ancestor : n + 1) /* { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } } */
#pragma omp target device (ancestor : n + 1)
;

2
gcc/testsuite/c-c++-common/gomp/target-device-ancestor-3.c
View File

@ -11,7 +11,7 @@ int bar (void);
/* { dg-do compile } */
#pragma omp requires reverse_offload /* { dg-message "sorry, unimplemented: 'reverse_offload' clause on 'requires' directive not supported yet" } */
#pragma omp requires reverse_offload
void
foo (void)

4
gcc/testsuite/c-c++-common/gomp/target-device-ancestor-4.c
View File

@ -4,12 +4,12 @@
/* Test to ensure that device-modifier 'ancestor' is parsed correctly in
device clauses. */
#pragma omp requires reverse_offload /* { dg-message "sorry, unimplemented: 'reverse_offload' clause on 'requires' directive not supported yet" } */
#pragma omp requires reverse_offload
void
foo (void)
{
#pragma omp target device (ancestor: 1) /* { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } } */
#pragma omp target device (ancestor: 1) /* { dg-message "sorry, unimplemented: 'ancestor' not yet supported" } */
;
}

2
gcc/testsuite/c-c++-common/gomp/target-device-ancestor-5.c
View File

@ -1,4 +1,4 @@
#pragma omp requires reverse_offload /* { dg-message "sorry, unimplemented: 'reverse_offload' clause on 'requires' directive not supported yet" } */
#pragma omp requires reverse_offload
void
foo ()

14
gcc/testsuite/gfortran.dg/gomp/requires-8.f90
View File

@ -1,3 +1,7 @@
module m0
integer :: x
end module m0
module m ! { dg-error "has OpenMP device constructs/routines but does not set !.OMP REQUIRES UNIFIED_SHARED_MEMORY but other program units do" }
!$omp requires reverse_offload
contains
@ -13,10 +17,14 @@ contains
end subroutine foo
end module m
subroutine bar ! { dg-error "has OpenMP device constructs/routines but does not set !.OMP REQUIRES REVERSE_OFFLOAD but other program units do" }
subroutine bar
!use m
!$omp requires unified_shared_memory
!$omp requires unified_shared_memory ! Possibly OK - needs OpenMP Lang Spec clarification (-> #3240)
!$omp declare target
end subroutine bar
! { dg-prune-output "not yet supported" }
subroutine foobar ! { dg-error "has OpenMP device constructs/routines but does not set !.OMP REQUIRES REVERSE_OFFLOAD but other program units do" }
use m0
!$omp requires unified_shared_memory
!$omp target enter data map(to:x)
end subroutine foobar

70
gcc/testsuite/gfortran.dg/gomp/target-device-ancestor-2.f90
View File

@ -4,19 +4,16 @@ implicit none
integer :: a, b, c
!$omp requires reverse_offload ! { dg-error "Sorry, 'reverse_offload' clause at \\(1\\) on REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
! The following test case is marked with 'xfail' because a previous 'sorry' from
! 'reverse_offload' suppresses the 'sorry' for 'ancestor'.
!$omp target device (ancestor: 1) ! { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } }
!$omp target device (ancestor: 1)
!$omp end target
!$omp target device (ancestor : a) ! { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } }
!$omp target device (ancestor : a)
!$omp end target
!$omp target device (ancestor : a + 1) ! { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } }
!$omp target device (ancestor : a + 1)
!$omp end target
@ -32,61 +29,4 @@ integer :: a, b, c
!$omp target device (42)
!$omp end target
! Ensure that no OpenMP constructs appear inside target regions with 'ancestor'.
! The following test case is marked with 'xfail' because a previous 'sorry' from
! 'reverse_offload' suppresses the 'sorry' for 'ancestor'.
!$omp target device (ancestor: 1)
!$omp teams ! { dg-error "" "OpenMP constructs are not allowed in target region with 'ancestor'" { xfail *-*-* } }
!$omp end teams
!$omp end target
!$omp target device (device_num: 1)
!$omp teams
!$omp end teams
!$omp end target
!$omp target device (1)
!$omp teams
!$omp end teams
!$omp end target
! Ensure that with 'ancestor' only the 'device', 'firstprivate', 'private',
! 'defaultmap', and 'map' clauses appear on the construct.
! The following test case is marked with 'xfail' because a previous 'sorry' from
! 'reverse_offload' suppresses the 'sorry' for 'ancestor'.
!$omp target nowait device (ancestor: 1) ! { dg-error "" "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" { xfail *-*-* } }
!$omp end target
!$omp target device (ancestor: 1) nowait ! { dg-error "" "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" { xfail *-*-* } }
!$omp end target
!$omp target nowait device (device_num: 1)
!$omp end target
!$omp target nowait device (1)
!$omp end target
!$omp target device (ancestor: 1) firstprivate (a) private (b) defaultmap (none) map (c)
!$omp end target
! Ensure that 'ancestor' is only used with 'target' constructs (not with
! 'target data', 'target update' etc.).
! The following test case is marked with 'xfail' because a previous 'sorry' from
! 'reverse_offload' suppresses the 'sorry' for 'ancestor'.
!$omp target data map (a) device (ancestor: 1) ! { dg-error "" "'device' clause with 'ancestor' is only allowed on 'target' construct" { xfail *-*-* } }
!$omp end target data
!$omp target enter data map (to: a) device (ancestor: 1) ! { dg-error "" "'device' clause with 'ancestor' is only allowed on 'target' construct" { xfail *-*-* } }
!$omp target exit data map (from: a) device (ancestor: 1) ! { dg-error "" "'device' clause with 'ancestor' is only allowed on 'target' construct" { xfail *-*-* } }
!$omp target update to (a) device (ancestor: 1) ! { dg-error "'device' clause with 'ancestor' is only allowed on 'target' construct" "" { xfail *-*-* } }
! { dg-error "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" "" { xfail *-*-* } .-1 }
end
end

80
gcc/testsuite/gfortran.dg/gomp/target-device-ancestor-2a.f90 Normal file
View File

@ -0,0 +1,80 @@
! { dg-do compile }
implicit none
integer :: a, b, c
!$omp requires reverse_offload
!$omp target device (ancestor: 1)
!$omp end target
!$omp target device (ancestor : a)
!$omp end target
!$omp target device (ancestor : a + 1)
!$omp end target
!$omp target device (device_num:42)
!$omp end target
!$omp target device (42)
!$omp end target
! Ensure that no OpenMP constructs appear inside target regions with 'ancestor'.
!$omp target device (ancestor: 1)
!$omp teams ! { dg-error "OpenMP constructs are not allowed in target region with 'ancestor'" }
!$omp end teams
!$omp end target
!$omp target device (device_num: 1)
!$omp teams
!$omp end teams
!$omp end target
!$omp target device (1)
!$omp teams
!$omp end teams
!$omp end target
! Ensure that with 'ancestor' only the 'device', 'firstprivate', 'private',
! 'defaultmap', and 'map' clauses appear on the construct.
!$omp target nowait device (ancestor: 1) ! { dg-error "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" }
!$omp end target
!$omp target device (ancestor: 1) nowait ! { dg-error "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" }
!$omp end target
!$omp target nowait device (device_num: 1)
!$omp end target
!$omp target nowait device (1)
!$omp end target
!$omp target device (ancestor: 1) firstprivate (a) private (b) defaultmap (none) map (c)
!$omp end target
! Ensure that 'ancestor' is only used with 'target' constructs (not with
! 'target data', 'target update' etc.).
! The following test case is marked with 'xfail' because a previous 'sorry' from
! 'reverse_offload' suppresses the 'sorry' for 'ancestor'.
!$omp target data map (a) device (ancestor: 1) ! { dg-error "'device' clause with 'ancestor' is only allowed on 'target' construct" }
!$omp end target data
!$omp target enter data map (to: a) device (ancestor: 1) ! { dg-error "'device' clause with 'ancestor' is only allowed on 'target' construct" }
!$omp target exit data map (from: a) device (ancestor: 1) ! { dg-error "'device' clause with 'ancestor' is only allowed on 'target' construct" }
!$omp target update to (a) device (ancestor: 1) ! { dg-error "'device' clause with 'ancestor' is only allowed on 'target' construct" }
!$omp target device (ancestor: 1) if(.false.)
! { dg-error "with 'ancestor', only the 'device', 'firstprivate', 'private', 'defaultmap', and 'map' clauses may appear on the construct" "" { target *-*-* } .-1 }
!$omp end target
end

6
gcc/testsuite/gfortran.dg/gomp/target-device-ancestor-3.f90
View File

@ -16,10 +16,10 @@ subroutine f1 ()
implicit none
integer :: n
!$omp requires reverse_offload ! { dg-error "Sorry, 'reverse_offload' clause at \\(1\\) on REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
!$omp target device (ancestor : 1)
n = omp_get_thread_num () ! { dg-error "" "OpenMP runtime API call 'omp_get_thread_num' in a region with 'device\\(ancestor\\)' clause" { xfail *-*-* } }
n = omp_get_thread_num () ! { dg-error "OpenMP runtime API call 'omp_get_thread_num' in a region with 'device\\(ancestor\\)' clause" }
!$omp end target
!$omp target device (device_num : 1)
@ -30,4 +30,4 @@ subroutine f1 ()
n = omp_get_thread_num ()
!$omp end target
end
end

6
gcc/testsuite/gfortran.dg/gomp/target-device-ancestor-4.f90
View File

@ -4,11 +4,11 @@
! Test to ensure that device-modifier 'ancestor' is parsed correctly in
! device clauses.
!$omp requires reverse_offload ! { dg-error "Sorry, 'reverse_offload' clause at \\(1\\) on REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
!$omp target device (ancestor : 1) ! { dg-message "" "sorry, unimplemented: 'ancestor' not yet supported" { xfail *-*-* } }
!$omp target device (ancestor : 1) ! { dg-message "sorry, unimplemented: 'ancestor' not yet supported" }
!$omp end target
end
! TODO: dg-final { scan-tree-dump-times "pragma omp target \[^\n\r)]*device\\(ancestor:1\\)" 1 "original" } }
! { dg-final { scan-tree-dump-times "pragma omp target \[^\n\r)]*device\\(ancestor:1\\)" 1 "original" } }

8
gcc/testsuite/gfortran.dg/gomp/target-device-ancestor-5.f90
View File

@ -6,7 +6,7 @@
!
module m
!$omp requires reverse_offload ! { dg-error "REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
contains
subroutine foo()
!$omp target device(ancestor:1)
@ -17,7 +17,7 @@ contains
block
block
block
!$omp target device(ancestor:1)
!$omp target device(ancestor:1) ! { dg-message "sorry, unimplemented: 'ancestor' not yet supported" }
!$omp end target
end block
end block
@ -26,7 +26,7 @@ contains
end module m
subroutine foo()
!$omp requires reverse_offload ! { dg-error "REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
block
block
block
@ -49,7 +49,7 @@ contains
end subroutine foo
program main
!$omp requires reverse_offload ! { dg-error "REQUIRES directive is not yet supported" }
!$omp requires reverse_offload
contains
subroutine foo()
!$omp target device(ancestor:1)

9
include/gomp-constants.h
View File

@ -282,7 +282,7 @@ enum gomp_map_kind
/* Versions of libgomp and device-specific plugins. GOMP_VERSION
should be incremented whenever an ABI-incompatible change is introduced
to the plugin interface defined in libgomp/libgomp.h. */
#define GOMP_VERSION 1
#define GOMP_VERSION 2
#define GOMP_VERSION_NVIDIA_PTX 1
#define GOMP_VERSION_INTEL_MIC 0
#define GOMP_VERSION_GCN 2
@ -341,6 +341,13 @@ enum gomp_map_kind
#define GOMP_DEPEND_MUTEXINOUTSET 4
#define GOMP_DEPEND_INOUTSET 5
/* Flag values for requires-directive features, must match corresponding
OMP_REQUIRES_* values in gcc/omp-general.h. */
#define GOMP_REQUIRES_UNIFIED_ADDRESS 0x10
#define GOMP_REQUIRES_UNIFIED_SHARED_MEMORY 0x20
#define GOMP_REQUIRES_REVERSE_OFFLOAD 0x80
#define GOMP_REQUIRES_TARGET_USED 0x200
/* HSA specific data structures. */
/* Identifiers of device-specific target arguments. */

2
libgomp/libgomp-plugin.h
View File

@ -125,7 +125,7 @@ extern void GOMP_PLUGIN_fatal (const char *, ...)
extern const char *GOMP_OFFLOAD_get_name (void);
extern unsigned int GOMP_OFFLOAD_get_caps (void);
extern int GOMP_OFFLOAD_get_type (void);
extern int GOMP_OFFLOAD_get_num_devices (void);
extern int GOMP_OFFLOAD_get_num_devices (unsigned int);
extern bool GOMP_OFFLOAD_init_device (int);
extern bool GOMP_OFFLOAD_fini_device (int);
extern unsigned GOMP_OFFLOAD_version (void);

8
libgomp/libgomp.texi
View File

@ -189,8 +189,8 @@ The OpenMP 4.5 specification is fully supported.
env variable @tab Y @tab
@item Nested-parallel changes to @emph{max-active-levels-var} ICV @tab Y @tab
@item @code{requires} directive @tab P
@tab Only fulfillable requirement are @code{atomic_default_mem_order}
and @code{dynamic_allocators}
@tab complete but no non-host devices provides @code{unified_address},
@code{unified_shared_memory} or @code{reverse_offload}
@item @code{teams} construct outside an enclosing target region @tab Y @tab
@item Non-rectangular loop nests @tab Y @tab
@item @code{!=} as relational-op in canonical loop form for C/C++ @tab Y @tab
@ -344,6 +344,8 @@ The OpenMP 4.5 specification is fully supported.
@item @code{unconstrained} and @code{reproducible} modifiers on @code{order}
clause @tab Y @tab
@item Support @code{begin/end declare target} syntax in C/C++ @tab N @tab
@item Pointer predetermined firstprivate getting initialized
to address of matching mapped list item per 5.1, Sect. 2.21.7.2 @tab N @tab
@end multitable
@ -361,7 +363,7 @@ The OpenMP 4.5 specification is fully supported.
@item Clauses on @code{end} directive can be on directive @tab N @tab
@item Deprecation of no-argument @code{destroy} clause on @code{depobj}
@tab N @tab
@item @code{linear} clause syntax changes and @code{step} modifier @tab N @tab
@item @code{linear} clause syntax changes and @code{step} modifier @tab P @tab only C/C++
@item Deprecation of minus operator for reductions @tab N @tab
@item Deprecation of separating @code{map} modifiers without comma @tab N @tab
@item @code{declare mapper} with iterator and @code{present} modifiers

4
libgomp/oacc-host.c
View File

@ -54,7 +54,7 @@ host_get_type (void)
}
static int
host_get_num_devices (void)
host_get_num_devices (unsigned int omp_requires_mask __attribute__((unused)))
{
return 1;
}
@ -229,7 +229,7 @@ host_openacc_get_property (int n, enum goacc_property prop)
{
union goacc_property_value nullval = { .val = 0 };
if (n >= host_get_num_devices ())
if (n >= host_get_num_devices (0))
return nullval;
switch (prop)

16
libgomp/oacc-init.c
View File

@ -148,7 +148,7 @@ resolve_device (acc_device_t d, bool fail_is_error)
if (dispatchers[d]
&& !strcasecmp (goacc_device_type,
get_openacc_name (dispatchers[d]->name))
&& dispatchers[d]->get_num_devices_func () > 0)
&& dispatchers[d]->get_num_devices_func (0) > 0)
goto found;
if (fail_is_error)
@ -169,7 +169,7 @@ resolve_device (acc_device_t d, bool fail_is_error)
case acc_device_not_host:
/* Find the first available device after acc_device_not_host. */
while (known_device_type_p (++d))
if (dispatchers[d] && dispatchers[d]->get_num_devices_func () > 0)
if (dispatchers[d] && dispatchers[d]->get_num_devices_func (0) > 0)
goto found;
if (d_arg == acc_device_default)
{
@ -302,7 +302,7 @@ acc_init_1 (acc_device_t d, acc_construct_t parent_construct, int implicit)
base_dev = resolve_device (d, true);
ndevs = base_dev->get_num_devices_func ();
ndevs = base_dev->get_num_devices_func (0);
if (ndevs <= 0 || goacc_device_num >= ndevs)
acc_dev_num_out_of_range (d, goacc_device_num, ndevs);
@ -351,7 +351,7 @@ acc_shutdown_1 (acc_device_t d)
/* Get the base device for this device type. */
base_dev = resolve_device (d, true);
ndevs = base_dev->get_num_devices_func ();
ndevs = base_dev->get_num_devices_func (0);
/* Unload all the devices of this type that have been opened. */
for (i = 0; i < ndevs; i++)
@ -520,7 +520,7 @@ goacc_attach_host_thread_to_device (int ord)
base_dev = cached_base_dev;
}
num_devices = base_dev->get_num_devices_func ();
num_devices = base_dev->get_num_devices_func (0);
if (num_devices <= 0 || ord >= num_devices)
acc_dev_num_out_of_range (acc_device_type (base_dev->type), ord,
num_devices);
@ -599,7 +599,7 @@ acc_get_num_devices (acc_device_t d)
if (!acc_dev)
return 0;
n = acc_dev->get_num_devices_func ();
n = acc_dev->get_num_devices_func (0);
if (n < 0)
n = 0;
@ -779,7 +779,7 @@ acc_set_device_num (int ord, acc_device_t d)
cached_base_dev = base_dev = resolve_device (d, true);
num_devices = base_dev->get_num_devices_func ();
num_devices = base_dev->get_num_devices_func (0);
if (num_devices <= 0 || ord >= num_devices)
acc_dev_num_out_of_range (d, ord, num_devices);
@ -814,7 +814,7 @@ get_property_any (int ord, acc_device_t d, acc_device_property_t prop)
struct gomp_device_descr *dev = resolve_device (d, true);
int num_devices = dev->get_num_devices_func ();
int num_devices = dev->get_num_devices_func (0);
if (num_devices <= 0 || ord >= num_devices)
acc_dev_num_out_of_range (d, ord, num_devices);

6
libgomp/plugin/plugin-gcn.c
View File

@ -3221,10 +3221,14 @@ GOMP_OFFLOAD_version (void)
/* Return the number of GCN devices on the system. */
int
GOMP_OFFLOAD_get_num_devices (void)
GOMP_OFFLOAD_get_num_devices (unsigned int omp_requires_mask)
{
if (!init_hsa_context ())
return 0;
/* Return -1 if no omp_requires_mask cannot be fulfilled but
devices were present. */
if (hsa_context.agent_count > 0 && omp_requires_mask != 0)
return -1;
return hsa_context.agent_count;
}

9
libgomp/plugin/plugin-nvptx.c
View File

@ -1175,9 +1175,14 @@ GOMP_OFFLOAD_get_type (void)
}
int
GOMP_OFFLOAD_get_num_devices (void)
GOMP_OFFLOAD_get_num_devices (unsigned int omp_requires_mask)
{
return nvptx_get_num_devices ();
int num_devices = nvptx_get_num_devices ();
/* Return -1 if no omp_requires_mask cannot be fulfilled but
devices were present. */
if (num_devices > 0 && omp_requires_mask != 0)
return -1;
return num_devices;
}
bool

76
libgomp/target.c
View File

@ -36,6 +36,7 @@
# include <inttypes.h> /* For PRIu64. */
#endif
#include <string.h>
#include <stdio.h> /* For snprintf. */
#include <assert.h>
#include <errno.h>
@ -98,6 +99,9 @@ static int num_devices;
/* Number of GOMP_OFFLOAD_CAP_OPENMP_400 devices. */
static int num_devices_openmp;
/* OpenMP requires mask. */
static int omp_requires_mask;
/* Similar to gomp_realloc, but release register_lock before gomp_fatal. */
static void *
@ -2314,6 +2318,20 @@ gomp_unload_image_from_device (struct gomp_device_descr *devicep,
}
}
static void
gomp_requires_to_name (char *buf, size_t size, int requires_mask)
{
char *end = buf + size, *p = buf;
if (requires_mask & GOMP_REQUIRES_UNIFIED_ADDRESS)
p += snprintf (p, end - p, "unified_address");
if (requires_mask & GOMP_REQUIRES_UNIFIED_SHARED_MEMORY)
p += snprintf (p, end - p, "%sunified_shared_memory",
(p == buf ? "" : ", "));
if (requires_mask & GOMP_REQUIRES_REVERSE_OFFLOAD)
p += snprintf (p, end - p, "%sreverse_offload",
(p == buf ? "" : ", "));
}
/* This function should be called from every offload image while loading.
It gets the descriptor of the host func and var tables HOST_TABLE, TYPE of
the target, and TARGET_DATA needed by target plugin. */
@ -2323,13 +2341,43 @@ GOMP_offload_register_ver (unsigned version, const void *host_table,
int target_type, const void *target_data)
{
int i;
int omp_req = 0;
if (GOMP_VERSION_LIB (version) > GOMP_VERSION)
gomp_fatal ("Library too old for offload (version %u < %u)",
GOMP_VERSION, GOMP_VERSION_LIB (version));
if (GOMP_VERSION_LIB (version) > 1)
{
omp_req = (int) (size_t) ((void **) target_data)[0];
target_data = &((void **) target_data)[1];
}
gomp_mutex_lock (&register_lock);
if (omp_req && omp_requires_mask && omp_requires_mask != omp_req)
{
char buf1[sizeof ("unified_address, unified_shared_memory, "
"reverse_offload")];
char buf2[sizeof ("unified_address, unified_shared_memory, "
"reverse_offload")];
gomp_requires_to_name (buf2, sizeof (buf2),
omp_req != GOMP_REQUIRES_TARGET_USED
? omp_req : omp_requires_mask);
if (omp_req != GOMP_REQUIRES_TARGET_USED
&& omp_requires_mask != GOMP_REQUIRES_TARGET_USED)
{
gomp_requires_to_name (buf1, sizeof (buf1), omp_requires_mask);
gomp_fatal ("OpenMP 'requires' directive with non-identical clauses "
"in multiple compilation units: '%s' vs. '%s'",
buf1, buf2);
}
else
gomp_fatal ("OpenMP 'requires' directive with '%s' specified only in "
"some compilation units", buf2);
}
omp_requires_mask = omp_req;
/* Load image to all initialized devices. */
for (i = 0; i < num_devices; i++)
{
@ -4125,8 +4173,30 @@ gomp_target_init (void)
if (gomp_load_plugin_for_device (&current_device, plugin_name))
{
new_num_devs = current_device.get_num_devices_func ();
if (new_num_devs >= 1)
int omp_req = omp_requires_mask & ~GOMP_REQUIRES_TARGET_USED;
new_num_devs = current_device.get_num_devices_func (omp_req);
if (gomp_debug_var > 0 && new_num_devs < 0)
{
bool found = false;
int type = current_device.get_type_func ();
for (int img = 0; img < num_offload_images; img++)
if (type == offload_images[img].type)
found = true;
if (found)
{
char buf[sizeof ("unified_address, unified_shared_memory, "
"reverse_offload")];
gomp_requires_to_name (buf, sizeof (buf), omp_req);
char *name = (char *) malloc (cur_len + 1);
memcpy (name, cur, cur_len);
name[cur_len] = '\0';
gomp_debug (1,
"%s devices present but 'omp requires %s' "
"cannot be fulfilled", name, buf);
free (name);
}
}
else if (new_num_devs >= 1)
{
/* Augment DEVICES and NUM_DEVICES. */

11
libgomp/testsuite/libgomp.c-c++-common/requires-1-aux.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-skip-if "" { *-*-* } } */
#pragma omp requires unified_address
int x;
void foo (void)
{
#pragma omp target
x = 1;
}

24
libgomp/testsuite/libgomp.c-c++-common/requires-1.c Normal file
View File

@ -0,0 +1,24 @@
/* { dg-do link { target { offload_target_nvptx || offload_target_amdgcn } } } */
/* { dg-additional-sources requires-1-aux.c } */
/* Check diagnostic by device-compiler's lto1.
Other file uses: 'requires unified_address'. */
#pragma omp requires unified_shared_memory
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}
/* { dg-error "OpenMP 'requires' directive with non-identical clauses in multiple compilation units: 'unified_shared_memory' vs. 'unified_address'" "" { target *-*-* } 0 } */
/* { dg-excess-errors "Ignore messages like: errors during merging of translation units|mkoffload returned 1 exit status" } */

9
libgomp/testsuite/libgomp.c-c++-common/requires-2-aux.c Normal file
View File

@ -0,0 +1,9 @@
/* { dg-skip-if "" { *-*-* } } */
int x;
void foo (void)
{
#pragma omp target
x = 1;
}

25
libgomp/testsuite/libgomp.c-c++-common/requires-2.c Normal file
View File

@ -0,0 +1,25 @@
/* { dg-do link { target offloading_enabled } } */
/* { dg-additional-options "-foffload=disable -flto" } */
/* { dg-additional-sources requires-2-aux.c } */
/* Check diagnostic by host's lto1.
Other file does not have any 'omp requires'. */
#pragma omp requires unified_shared_memory
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}
/* { dg-error "OpenMP 'requires' directive with 'unified_shared_memory' specified only in some compilation units" "" { target *-*-* } 0 } */
/* { dg-excess-errors "Ignore messages like: errors during merging of translation units|mkoffload returned 1 exit status" } */

11
libgomp/testsuite/libgomp.c-c++-common/requires-3-aux.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-skip-if "" { *-*-* } } */
#pragma omp requires unified_address
int x;
void foo (void)
{
#pragma omp target
x = 1;
}

24
libgomp/testsuite/libgomp.c-c++-common/requires-3.c Normal file
View File

@ -0,0 +1,24 @@
/* { dg-do link { target offloading_enabled } } */
/* { dg-additional-sources requires-3-aux.c } */
/* Check diagnostic by device-compiler's lto1.
Other file uses: 'requires unified_address'. */
#pragma omp requires unified_address,unified_shared_memory
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}
/* { dg-error "OpenMP 'requires' directive with non-identical clauses in multiple compilation units: 'unified_address, unified_shared_memory' vs. 'unified_address'" "" { target *-*-* } 0 } */
/* { dg-excess-errors "Ignore messages like: errors during merging of translation units|mkoffload returned 1 exit status" } */

13
libgomp/testsuite/libgomp.c-c++-common/requires-4-aux.c Normal file
View File

@ -0,0 +1,13 @@
/* { dg-skip-if "" { *-*-* } } */
#pragma omp requires reverse_offload
/* Note: The file does not have neither of:
declare target directives, device constructs or device routines. */
int x;
void foo (void)
{
x = 1;
}

23
libgomp/testsuite/libgomp.c-c++-common/requires-4.c Normal file
View File

@ -0,0 +1,23 @@
/* { dg-do link { target offloading_enabled } } */
/* { dg-additional-options "-flto" } */
/* { dg-additional-sources requires-4-aux.c } */
/* Check diagnostic by device-compiler's or host compiler's lto1.
Other file uses: 'requires reverse_offload', but that's inactive as
there are no declare target directives, device constructs nor device routines */
#pragma omp requires unified_address,unified_shared_memory
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}

11
libgomp/testsuite/libgomp.c-c++-common/requires-5-aux.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-skip-if "" { *-*-* } } */
#pragma omp requires unified_shared_memory, unified_address, reverse_offload
int x;
void foo (void)
{
#pragma omp target
x = 1;
}

21
libgomp/testsuite/libgomp.c-c++-common/requires-5.c Normal file
View File

@ -0,0 +1,21 @@
/* { dg-do run { target { offload_target_nvptx || offload_target_amdgcn } } } */
/* { dg-additional-sources requires-5-aux.c } */
#pragma omp requires unified_shared_memory, unified_address, reverse_offload
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}
/* (Only) if GOMP_DEBUG=1, should print at runtime the following:
"devices present but 'omp requires unified_address, unified_shared_memory, reverse_offload' cannot be fulfilled" */

17
libgomp/testsuite/libgomp.c-c++-common/requires-6.c Normal file
View File

@ -0,0 +1,17 @@
#pragma omp requires unified_shared_memory, unified_address, reverse_offload
/* The requires line is not active as there is none of:
declare target directives, device constructs or device routines.
Thus, this code is expected to work everywhere. */
int a[10];
extern void foo (void);
int
main (void)
{
for (int i = 0; i < 10; i++)
a[i] = 0;
return 0;
}

11
libgomp/testsuite/libgomp.c-c++-common/requires-7-aux.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-skip-if "" { *-*-* } } */
#pragma omp requires unified_address
int x;
void foo (void)
{
x = 1;
#pragma omp target enter data map(always,to: x)
}

24
libgomp/testsuite/libgomp.c-c++-common/requires-7.c Normal file
View File

@ -0,0 +1,24 @@
/* { dg-do link { target { offload_target_nvptx || offload_target_amdgcn } } } */
/* { dg-additional-sources requires-7-aux.c } */
/* Check diagnostic by device-compiler's lto1.
Other file uses: 'requires unified_address'. */
#pragma omp requires unified_shared_memory
int a[10];
extern void foo (void);
int
main (void)
{
#pragma omp target
for (int i = 0; i < 10; i++)
a[i] = 0;
foo ();
return 0;
}
/* { dg-error "OpenMP 'requires' directive with non-identical clauses in multiple compilation units: 'unified_shared_memory' vs. 'unified_address'" "" { target *-*-* } 0 } */
/* { dg-excess-errors "Ignore messages like: errors during merging of translation units|mkoffload returned 1 exit status" } */

14
libgomp/testsuite/libgomp.fortran/requires-1-aux.f90 Normal file
View File

@ -0,0 +1,14 @@
! { dg-skip-if "" { *-*-* } }
module m
integer x
end module m
subroutine foo
use m
implicit none
!$omp requires unified_address
x = 1
!$omp target enter data map(always,to: x)
end

26
libgomp/testsuite/libgomp.fortran/requires-1.f90 Normal file
View File

@ -0,0 +1,26 @@
! { dg-do link { target { offload_target_nvptx || offload_target_amdgcn } } }
! { dg-additional-sources requires-1-aux.f90 }
! Check diagnostic by device-compiler's lto1.
! Other file uses: 'requires unified_address'.
module m
integer :: a(10)
interface
subroutine foo
end
end interface
end
program main
!$omp requires unified_shared_memory
!$omp target
a = 0
!$omp end target
call foo ()
end
! { dg-error "OpenMP 'requires' directive with non-identical clauses in multiple compilation units: 'unified_shared_memory' vs. 'unified_address'" "" { target *-*-* } 0 }
! { dg-excess-errors "Ignore messages like: errors during merging of translation units|mkoffload returned 1 exit status" }

6
liboffloadmic/plugin/libgomp-plugin-intelmic.cpp
View File

@ -168,8 +168,12 @@ GOMP_OFFLOAD_get_type (void)
}
extern "C" int
GOMP_OFFLOAD_get_num_devices (void)
GOMP_OFFLOAD_get_num_devices (unsigned int omp_requires_mask)
{
/* Return -1 if no omp_requires_mask cannot be fulfilled but
devices were present. */
if (num_devices > 0 && omp_requires_mask != 0)
return -1;
TRACE ("(): return %d", num_devices);
return num_devices;
}