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Use OpenACC code to process OpenMP target regions

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This is a backport of:
https://gcc.gnu.org/pipermail/gcc-patches/2023-May/619003.html

This patch implements '-fopenmp-target=acc', which enables internally handling
a subset of OpenMP target regions as OpenACC parallel regions. This basically
includes target, teams, parallel, distribute, for/do constructs, and atomics.

Essentially, we adjust the internal kinds to OpenACC type, and let OpenACC code
paths handle them, with various needed adjustments throughout middle-end and
nvptx backend. When using this "OMPACC" mode, if there are cases the patch
doesn't handle, it issues a warning, and reverts to normal processing for that
target region.

gcc/ChangeLog:

	* builtins.cc (expand_builtin_omp_builtins): New function.
	(expand_builtin): Add expand cases for BUILT_IN_GOMP_BARRIER,
	BUILT_IN_OMP_GET_THREAD_NUM, BUILT_IN_OMP_GET_NUM_THREADS,
	BUILT_IN_OMP_GET_TEAM_NUM, and BUILT_IN_OMP_GET_NUM_TEAMS using
	expand_builtin_omp_builtins, enabled under -fopenmp-target=acc.
	* cgraphunit.cc (analyze_functions): Add call to
	omp_ompacc_attribute_tagging, enabled under -fopenmp-target=acc.
	* common.opt (fopenmp-target=): Add new option and enums.
	* config/nvptx/mkoffload.cc (main): Handle -fopenmp-target=.
	* config/nvptx/nvptx-protos.h (nvptx_expand_omp_get_num_threads): New
	prototype.
	(nvptx_mem_shared_p): Likewise.
	* config/nvptx/nvptx.cc (omp_num_threads_sym): New global static RTX
	symbol for number of threads in team.
	(omp_num_threads_align): New var for alignment of omp_num_threads_sym.
	(need_omp_num_threads): New bool for if any function references
	omp_num_threads_sym.
	(nvptx_option_override): Initialize omp_num_threads_sym/align.
	(write_as_kernel): Disable normal OpenMP kernel entry under OMPACC mode.
	(nvptx_declare_function_name): Disable shim function under OMPACC mode.
	Disable soft-stack under OMPACC mode. Add generation of neutering init
	code under OMPACC mode.
	(nvptx_output_set_softstack): Return "" under OMPACC mode.
	(nvptx_expand_call): Set parallelism to vector for function calls with
	"ompacc for" attached.
	(nvptx_expand_oacc_fork): Set mode to GOMP_DIM_VECTOR under OMPACC mode.
	(nvptx_expand_oacc_join): Likewise.
	(nvptx_expand_omp_get_num_threads): New function.
	(nvptx_mem_shared_p): New function.
	(nvptx_mach_max_workers): Return 1 under OMPACC mode.
	(nvptx_mach_vector_length): Return 32 under OMPACC mode.
	(nvptx_single): Add adjustments for OMPACC mode, which have
	parallel-construct fork/joins, and regions of code where neutering is
	dynamically determined.
	(nvptx_reorg): Enable neutering under OMPACC mode when "ompacc for"
	attribute is attached to function. Disable uniform-simt when under
	OMPACC mode.
	(nvptx_file_end): Write __nvptx_omp_num_threads out when needed.
	(nvptx_goacc_fork_join): Return true under OMPACC mode.
	* config/nvptx/nvptx.h (struct GTY(()) machine_function): Add
	omp_parallel_predicate and omp_fn_entry_num_threads_reg fields.
	* config/nvptx/nvptx.md (unspecv): Add UNSPECV_GET_TID,
	UNSPECV_GET_NTID, UNSPECV_GET_CTAID, UNSPECV_GET_NCTAID,
	UNSPECV_OMP_PARALLEL_FORK, UNSPECV_OMP_PARALLEL_JOIN entries.
	(nvptx_shared_mem_operand): New predicate.
	(gomp_barrier): New expand pattern.
	(omp_get_num_threads): New expand pattern.
	(omp_get_num_teams): New insn pattern.
	(omp_get_thread_num): Likewise.
	(omp_get_team_num): Likewise.
	(get_ntid): Likewise.
	(nvptx_omp_parallel_fork): Likewise.
	(nvptx_omp_parallel_join): Likewise.

	* flag-types.h (omp_target_mode_kind): New flag value enum.
	* gimplify.cc (struct gimplify_omp_ctx): Add 'bool ompacc' field.
	(gimplify_scan_omp_clauses): Handle OMP_CLAUSE__OMPACC_.
	(gimplify_adjust_omp_clauses): Likewise.
	(gimplify_omp_ctx_ompacc_p): New function.
	(gimplify_omp_for): Handle combined loops under OMPACC.

	* lto-wrapper.cc (append_compiler_options): Add OPT_fopenmp_target_.
	* omp-builtins.def (BUILT_IN_OMP_GET_THREAD_NUM): Remove CONST.
	(BUILT_IN_OMP_GET_NUM_THREADS): Likewise.
	* omp-expand.cc (remove_exit_barrier): Disable addressable-var
	processing for parallel construct child functions under OMPACC mode.
	(expand_oacc_for): Add OMPACC mode handling.
	(get_target_arguments): Force thread_limit clause value to 1 under
	OMPACC mode.
	(expand_omp): Under OMPACC mode, avoid child function expanding of
	GIMPLE_OMP_PARALLEL.
	* omp-general.cc (omp_extract_for_data): Adjustments for OMPACC mode.
	* omp-low.cc (struct omp_context): Add 'bool ompacc_p' field.
	(scan_sharing_clauses): Handle OMP_CLAUSE__OMPACC_.
	(ompacc_ctx_p): New function.
	(scan_omp_parallel): Handle OMPACC mode, avoid creating child function.
	(scan_omp_target): Tag "ompacc"/"ompacc for" attributes for target
	construct child function, remove OMP_CLAUSE__OMPACC_ clauses.
	(lower_oacc_head_mark): Handle OMPACC mode cases.
	(lower_omp_for): Adjust OMP_FOR kind from OpenMP to OpenACC kinds, add
	vector/gang clauses as needed. Add other OMPACC handling.
	(lower_omp_taskreg): Add call to lower_oacc_head_tail for OMPACC case.
	(lower_omp_target): Do OpenACC gang privatization under OMPACC case.
	(lower_omp_teams): Forward OpenACC privatization variables to outer
	target region under OMPACC mode.
	(lower_omp_1): Do OpenACC gang privatization under OMPACC case for
	GIMPLE_BIND.
	* omp-offload.cc (ompacc_supported_clauses_p): New function.
	(struct target_region_data): New struct type for tree walk.
	(scan_fndecl_for_ompacc): New function.
	(scan_omp_target_region_r): New function.
	(scan_omp_target_construct_r): New function.
	(omp_ompacc_attribute_tagging): New function.
	(oacc_dim_call): Add OMPACC case handling.
	(execute_oacc_device_lower): Make parts explicitly only OpenACC enabled.
	(pass_oacc_device_lower::gate): Enable pass under OMPACC mode.
	* omp-offload.h (omp_ompacc_attribute_tagging): New prototype.
	* opts.cc (finish_options): Only allow -fopenmp-target= when -fopenmp
	and no -fopenacc.
	* target-insns.def (gomp_barrier): New defined insn pattern.
	(omp_get_thread_num): Likewise.
	(omp_get_num_threads): Likewise.
	(omp_get_team_num): Likewise.
	(omp_get_num_teams): Likewise.
	* tree-core.h (enum omp_clause_code): Add new OMP_CLAUSE__OMPACC_ entry
	for internal clause.
	* tree-nested.cc (convert_nonlocal_omp_clauses): Handle
	OMP_CLAUSE__OMPACC_.
	* tree-pretty-print.cc (dump_omp_clause): Handle OMP_CLAUSE__OMPACC_.
	* tree.cc (omp_clause_num_ops): Add OMP_CLAUSE__OMPACC_ entry.
	(omp_clause_code_name): Likewise.
	* tree.h (OMP_CLAUSE__OMPACC__FOR): New macro for OMP_CLAUSE__OMPACC_.

	* tree-ssa-loop.cc (pass_oacc_only::gate): Enable pass under OMPACC
	mode cases.

libgomp/ChangeLog:

	* config/nvptx/team.c (__nvptx_omp_num_threads): New global variable in
	shared memory.
This commit is contained in:
Chung-Lin Tang 2023-05-19 12:14:04 -07:00
parent 17c41b3907
commit 5f881613fa
29 changed files with 1080 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
gcc/builtins.cc
View File

@ -6785,6 +6785,62 @@ expand_builtin_goacc_parlevel_id_size (tree exp, rtx target, int ignore)
return target;
}
static rtx
expand_builtin_omp_builtins (tree exp, rtx target, int ignore)
{
rtx ret = NULL;
rtx_insn *(*gen_fn) (rtx) = NULL;
switch (DECL_FUNCTION_CODE (get_callee_fndecl (exp)))
{
case BUILT_IN_GOMP_BARRIER:
if (targetm.have_gomp_barrier ())
{
emit_insn (targetm.gen_gomp_barrier ());
return target;
}
break;
case BUILT_IN_OMP_GET_THREAD_NUM:
if (targetm.have_omp_get_thread_num ())
gen_fn = targetm.gen_omp_get_thread_num;
break;
case BUILT_IN_OMP_GET_NUM_THREADS:
if (targetm.have_omp_get_num_threads ())
gen_fn = targetm.gen_omp_get_num_threads;
break;
case BUILT_IN_OMP_GET_TEAM_NUM:
if (targetm.have_omp_get_team_num ())
gen_fn = targetm.gen_omp_get_team_num;
break;
case BUILT_IN_OMP_GET_NUM_TEAMS:
if (targetm.have_omp_get_num_teams ())
gen_fn = targetm.gen_omp_get_num_teams;
break;
default:
gcc_unreachable ();
}
if (ignore)
return const0_rtx;
if (gen_fn)
{
rtx reg = (MEM_P (target)
? gen_reg_rtx (GET_MODE (target))
: target);
emit_insn (gen_fn (reg));
if (reg != target)
emit_move_insn (target, reg);
ret = target;
}
return ret;
}
/* Expand a string compare operation using a sequence of char comparison
to get rid of the calling overhead, with result going to TARGET if
that's convenient.
@ -8113,6 +8169,21 @@ expand_builtin (tree exp, rtx target, rtx subtarget, machine_mode mode,
case BUILT_IN_GOACC_PARLEVEL_SIZE:
return expand_builtin_goacc_parlevel_id_size (exp, target, ignore);
case BUILT_IN_GOMP_BARRIER:
case BUILT_IN_OMP_GET_THREAD_NUM:
case BUILT_IN_OMP_GET_NUM_THREADS:
case BUILT_IN_OMP_GET_TEAM_NUM:
case BUILT_IN_OMP_GET_NUM_TEAMS:
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
{
target = expand_builtin_omp_builtins (exp, target, ignore);
if (target)
return target;
}
break;
case BUILT_IN_SPECULATION_SAFE_VALUE_PTR:
return expand_speculation_safe_value (VOIDmode, exp, target, ignore);

7
gcc/cgraphunit.cc
View File

@ -1174,7 +1174,12 @@ analyze_functions (bool first_time)
build_type_inheritance_graph ();
if (flag_openmp && first_time)
omp_discover_implicit_declare_target ();
{
omp_discover_implicit_declare_target ();
if(flag_openmp_target == OMP_TARGET_MODE_OMPACC)
omp_ompacc_attribute_tagging ();
}
/* Analysis adds static variables that in turn adds references to new functions.
So we need to iterate the process until it stabilize. */

13
gcc/common.opt
View File

@ -2233,6 +2233,19 @@ Enum(target_simd_clone_device) String(nohost) Value(OMP_TARGET_SIMD_CLONE_NOHOST
EnumValue
Enum(target_simd_clone_device) String(any) Value(OMP_TARGET_SIMD_CLONE_ANY)
fopenmp-target=
Common Joined RejectNegative Enum(openmp_target) Var(flag_openmp_target) Init(OMP_TARGET_MODE_DEFAULT)
Execution model used for OpenMP target regions.
Enum
Name(openmp_target) Type(int)
EnumValue
Enum(openmp_target) String(default) Value(OMP_TARGET_MODE_DEFAULT)
EnumValue
Enum(openmp_target) String(acc) Value(OMP_TARGET_MODE_OMPACC)
fopt-info
Common Var(flag_opt_info) Optimization
Enable all optimization info dumps on stderr.

13
gcc/config/nvptx/mkoffload.cc
View File

@ -603,6 +603,7 @@ main (int argc, char **argv)
/* Scan the argument vector. */
bool fopenmp = false;
bool fopenmp_target = false;
bool fopenacc = false;
bool fPIC = false;
bool fpic = false;
@ -622,6 +623,9 @@ main (int argc, char **argv)
#undef STR
else if (strcmp (argv[i], "-fopenmp") == 0)
fopenmp = true;
else if (strncmp (argv[i], "-fopenmp-target=",
strlen ("-fopenmp-target=")) == 0)
fopenmp_target = true;
else if (strcmp (argv[i], "-fopenacc") == 0)
fopenacc = true;
else if (strcmp (argv[i], "-fPIC") == 0)
@ -639,6 +643,15 @@ main (int argc, char **argv)
if (!(fopenacc ^ fopenmp))
fatal_error (input_location, "either %<-fopenacc%> or %<-fopenmp%> "
"must be set");
if (fopenmp_target)
{
if (fopenacc)
fatal_error (input_location, "%<-fopenacc%> not compatible with "
"%<-fopenmp-target=%>");
if (!fopenmp)
fatal_error (input_location, "%<-fopenmp-target=%> requires "
"%<-fopenmp%>");
}
struct obstack argv_obstack;
obstack_init (&argv_obstack);

2
gcc/config/nvptx/nvptx-protos.h
View File

@ -50,6 +50,7 @@ extern unsigned int ptx_version_to_number (enum ptx_version, bool);
extern void nvptx_expand_oacc_fork (unsigned);
extern void nvptx_expand_oacc_join (unsigned);
extern void nvptx_expand_call (rtx, rtx);
extern void nvptx_expand_omp_get_num_threads (rtx);
extern rtx nvptx_gen_shuffle (rtx, rtx, rtx, nvptx_shuffle_kind);
extern rtx nvptx_expand_compare (rtx);
extern const char *nvptx_ptx_type_from_mode (machine_mode, bool);
@ -63,5 +64,6 @@ extern const char *nvptx_output_red_partition (rtx, rtx);
extern const char *nvptx_output_atomic_insn (const char *, rtx *, int, int);
extern bool nvptx_mem_local_p (rtx);
extern bool nvptx_mem_maybe_shared_p (const_rtx);
extern bool nvptx_mem_shared_p (const_rtx);
#endif
#endif

269
gcc/config/nvptx/nvptx.cc
View File

@ -176,6 +176,9 @@ static unsigned gang_private_shared_align;
static GTY(()) rtx gang_private_shared_sym;
static hash_map<tree_decl_hash, unsigned int> gang_private_shared_hmap;
static GTY(()) rtx omp_num_threads_sym;
static unsigned omp_num_threads_align;
/* Global lock variable, needed for 128bit worker & gang reductions. */
static GTY(()) tree global_lock_var;
@ -187,6 +190,9 @@ static bool have_softstack_decl;
static bool need_unisimt_decl;
static bool have_unisimt_decl;
/* True if any function references __nvptx_omp_num_threads. */
static bool need_omp_num_threads;
static int nvptx_mach_max_workers ();
/* Allocate a new, cleared machine_function structure. */
@ -393,6 +399,10 @@ nvptx_option_override (void)
SET_SYMBOL_DATA_AREA (gang_private_shared_sym, DATA_AREA_SHARED);
gang_private_shared_align = GET_MODE_ALIGNMENT (SImode) / BITS_PER_UNIT;
omp_num_threads_sym = gen_rtx_SYMBOL_REF (Pmode, "__nvptx_omp_num_threads");
SET_SYMBOL_DATA_AREA (omp_num_threads_sym, DATA_AREA_SHARED);
omp_num_threads_align = GET_MODE_ALIGNMENT (SImode) / BITS_PER_UNIT;
diagnose_openacc_conflict (TARGET_GOMP, "-mgomp");
diagnose_openacc_conflict (TARGET_SOFT_STACK, "-msoft-stack");
diagnose_openacc_conflict (TARGET_UNIFORM_SIMT, "-muniform-simt");
@ -961,7 +971,8 @@ write_as_kernel (tree attrs)
{
return (lookup_attribute ("kernel", attrs) != NULL_TREE
|| (lookup_attribute ("omp target entrypoint", attrs) != NULL_TREE
&& lookup_attribute ("oacc function", attrs) != NULL_TREE));
&& (lookup_attribute ("oacc function", attrs) != NULL_TREE
|| lookup_attribute ("ompacc", attrs) != NULL_TREE)));
/* For OpenMP target regions, the corresponding kernel entry is emitted from
write_omp_entry as a separate function. */
}
@ -1495,6 +1506,7 @@ nvptx_declare_function_name (FILE *file, const char *name, const_tree decl)
DECL_ATTRIBUTES (decl)))
force_public = true;
if (lookup_attribute ("omp target entrypoint", DECL_ATTRIBUTES (decl))
&& !lookup_attribute ("ompacc", DECL_ATTRIBUTES (decl))
&& !lookup_attribute ("oacc function", DECL_ATTRIBUTES (decl)))
{
char *buf = (char *) alloca (strlen (name) + sizeof ("$impl"));
@ -1548,7 +1560,7 @@ nvptx_declare_function_name (FILE *file, const char *name, const_tree decl)
HOST_WIDE_INT sz = get_frame_size ();
bool need_frameptr = sz || cfun->machine->has_chain;
int alignment = crtl->stack_alignment_needed / BITS_PER_UNIT;
if (!TARGET_SOFT_STACK)
if (!TARGET_SOFT_STACK || lookup_attribute ("ompacc", DECL_ATTRIBUTES (decl)))
{
/* Declare a local var for outgoing varargs. */
if (cfun->machine->has_varadic)
@ -1619,6 +1631,45 @@ nvptx_declare_function_name (FILE *file, const char *name, const_tree decl)
nvptx_init_unisimt_predicate (file);
if (cfun->machine->bcast_partition || cfun->machine->sync_bar)
nvptx_init_oacc_workers (file);
if (offloading_function_p ((tree) decl)
&& lookup_attribute ("ompacc", DECL_ATTRIBUTES (decl))
&& !lookup_attribute ("ompacc seq", DECL_ATTRIBUTES (decl)))
{
int nthr_regno = REGNO (cfun->machine->omp_fn_entry_num_threads_reg);
if (lookup_attribute ("omp target entrypoint", DECL_ATTRIBUTES (decl)))
{
fprintf (file, "\t{\n");
if (cfun->machine->omp_parallel_predicate)
{
/* Borrow num-threads regno as temp register. */
fprintf (file, "\t\tmov.u32 %%r%d, %%tid.x;\n", nthr_regno);
fprintf (file, "\t\tsetp.ne.u32 %%r%d, %%r%d, 0;\n",
REGNO (cfun->machine->omp_parallel_predicate), nthr_regno);
}
fprintf (file, "\t\tmov.u32 %%r%d, 1;\n", nthr_regno);
fprintf (file, "\t\tst.shared.u32 [__nvptx_omp_num_threads], %%r%d;\n", nthr_regno);
fprintf (file, "\t}\n");
need_omp_num_threads = true;
}
else
{
fprintf (file, "\t\tld.shared.u32 %%r%d, [__nvptx_omp_num_threads];\n", nthr_regno);
if (cfun->machine->omp_parallel_predicate)
{
fprintf (file, "\t{\n");
fprintf (file, "\t\t.reg.u32 %%tmp1;\n");
fprintf (file, "\t\t.reg.pred %%not_parallel_mode, %%v1_lane;\n");
fprintf (file, "\t\tsetp.eq.u32 %%not_parallel_mode, %%r%d, 1;\n", nthr_regno);
fprintf (file, "\t\tmov.u32 %%tmp1, %%tid.x;\n");
fprintf (file, "\t\tsetp.ne.u32 %%v1_lane, %%tmp1, 0;\n");
fprintf (file, "\t\tand.pred %%r%d, %%not_parallel_mode, %%v1_lane;\n",
REGNO (cfun->machine->omp_parallel_predicate));
fprintf (file, "\t}\n");
need_omp_num_threads = true;
}
}
}
}
/* Output code for switching uniform-simt state. ENTERING indicates whether
@ -1736,6 +1787,10 @@ nvptx_output_simt_exit (rtx src)
const char *
nvptx_output_set_softstack (unsigned src_regno)
{
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
return "";
if (cfun->machine->has_softstack && !crtl->is_leaf)
{
fprintf (asm_out_file, "\tst.shared.u%d\t[%s], ",
@ -1854,20 +1909,29 @@ nvptx_expand_call (rtx retval, rtx address)
if (DECL_STATIC_CHAIN (decl))
cfun->machine->has_chain = true;
tree attr = oacc_get_fn_attrib (decl);
if (attr)
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
tree dims = TREE_VALUE (attr);
parallel = GOMP_DIM_MASK (GOMP_DIM_MAX) - 1;
for (int ix = 0; ix != GOMP_DIM_MAX; ix++)
if (lookup_attribute ("ompacc", DECL_ATTRIBUTES (decl))
&& !lookup_attribute ("ompacc seq", DECL_ATTRIBUTES (decl)))
parallel = GOMP_DIM_MASK (GOMP_DIM_VECTOR);
}
else
{
tree attr = oacc_get_fn_attrib (decl);
if (attr)
{
if (TREE_PURPOSE (dims)
&& !integer_zerop (TREE_PURPOSE (dims)))
break;
/* Not on this axis. */
parallel ^= GOMP_DIM_MASK (ix);
dims = TREE_CHAIN (dims);
tree dims = TREE_VALUE (attr);
parallel = GOMP_DIM_MASK (GOMP_DIM_MAX) - 1;
for (int ix = 0; ix != GOMP_DIM_MAX; ix++)
{
if (TREE_PURPOSE (dims)
&& !integer_zerop (TREE_PURPOSE (dims)))
break;
/* Not on this axis. */
parallel ^= GOMP_DIM_MASK (ix);
dims = TREE_CHAIN (dims);
}
}
}
}
@ -1930,15 +1994,27 @@ nvptx_expand_compare (rtx compare)
void
nvptx_expand_oacc_fork (unsigned mode)
{
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
mode = GOMP_DIM_VECTOR;
nvptx_emit_forking (GOMP_DIM_MASK (mode), false);
}
void
nvptx_expand_oacc_join (unsigned mode)
{
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
mode = GOMP_DIM_VECTOR;
nvptx_emit_joining (GOMP_DIM_MASK (mode), false);
}
void
nvptx_expand_omp_get_num_threads (rtx target)
{
rtx mem = gen_rtx_MEM (SImode, omp_num_threads_sym);
emit_insn (gen_rtx_SET (target, mem));
need_omp_num_threads = true;
}
/* Generate instruction(s) to unpack a 64 bit object into 2 32 bit
objects. */
@ -2879,6 +2955,13 @@ nvptx_mem_maybe_shared_p (const_rtx x)
return area == DATA_AREA_SHARED || area == DATA_AREA_GENERIC;
}
bool
nvptx_mem_shared_p (const_rtx x)
{
nvptx_data_area area = nvptx_mem_data_area (x);
return area == DATA_AREA_SHARED;
}
/* Print an operand, X, to FILE, with an optional modifier in CODE.
Meaning of CODE:
@ -3483,6 +3566,11 @@ init_axis_dim (void)
static int ATTRIBUTE_UNUSED
nvptx_mach_max_workers ()
{
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
return 1;
if (!cfun->machine->axis_dim_init_p)
init_axis_dim ();
return cfun->machine->axis_dim[MACH_MAX_WORKERS];
@ -3491,6 +3579,11 @@ nvptx_mach_max_workers ()
static int ATTRIBUTE_UNUSED
nvptx_mach_vector_length ()
{
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
return 32;
if (!cfun->machine->axis_dim_init_p)
init_axis_dim ();
return cfun->machine->axis_dim[MACH_VECTOR_LENGTH];
@ -4873,11 +4966,27 @@ nvptx_single (unsigned mask, basic_block from, basic_block to)
rtx_insn *tail = BB_END (to);
unsigned skip_mask = mask;
rtx_insn *join = NULL;
rtx_insn *fork = NULL;
while (true)
{
/* Find first insn of from block. */
while (head != BB_END (from) && !needs_neutering_p (head))
head = NEXT_INSN (head);
while (true)
{
if (INSN_P (head)
&& recog_memoized (head) == CODE_FOR_nvptx_join)
{
/* Record join if we see it. */
gcc_assert (!join);
join = head;
}
if (head != BB_END (from) && !needs_neutering_p (head))
head = NEXT_INSN (head);
else
break;
}
if (from == to)
break;
@ -4895,8 +5004,46 @@ nvptx_single (unsigned mask, basic_block from, basic_block to)
/* Find last insn of to block */
rtx_insn *limit = from == to ? head : BB_HEAD (to);
while (tail != limit && !INSN_P (tail) && !LABEL_P (tail))
tail = PREV_INSN (tail);
while (true)
{
if (INSN_P (tail)
&& recog_memoized (tail) == CODE_FOR_nvptx_fork)
{
/* Record join if we see it. */
gcc_assert (!fork);
fork = tail;
}
if (tail != limit && !INSN_P (tail) && !LABEL_P (tail))
tail = PREV_INSN (tail);
else
break;
}
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
if (join
/* We do not set/restore parallel state across function calls. */
&& !(INTVAL (XVECEXP (PATTERN (join), 0, 0)) & (1 << GOMP_DIM_MAX)))
{
rtx reg = cfun->machine->omp_fn_entry_num_threads_reg;
rtx mem = gen_rtx_MEM (SImode, omp_num_threads_sym);
emit_insn_before (gen_nvptx_omp_parallel_join (mem, reg), head);
need_omp_num_threads = true;
head = PREV_INSN (head);
}
if (fork
/* We do not set/restore parallel state across function calls. */
&& !(INTVAL (XVECEXP (PATTERN (fork), 0, 0)) & (1 << GOMP_DIM_MAX)))
{
rtx reg = gen_reg_rtx (SImode);
rtx mem = gen_rtx_MEM (SImode, omp_num_threads_sym);
emit_insn_before (gen_get_ntid (reg), tail);
emit_insn_before (gen_nvptx_omp_parallel_fork (mem, reg), tail);
need_omp_num_threads = true;
}
}
/* Detect if tail is a branch. */
rtx tail_branch = NULL_RTX;
@ -4943,16 +5090,31 @@ nvptx_single (unsigned mask, basic_block from, basic_block to)
if (GOMP_DIM_MASK (mode) & skip_mask)
{
rtx_code_label *label = gen_label_rtx ();
rtx pred = cfun->machine->axis_predicate[mode - GOMP_DIM_WORKER];
rtx_insn **mode_jump
= mode == GOMP_DIM_VECTOR ? &vector_jump : &worker_jump;
rtx_insn **mode_label
= mode == GOMP_DIM_VECTOR ? &vector_label : &worker_label;
if (!pred)
rtx pred;
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& mode == GOMP_DIM_VECTOR)
{
pred = gen_reg_rtx (BImode);
cfun->machine->axis_predicate[mode - GOMP_DIM_WORKER] = pred;
pred = cfun->machine->omp_parallel_predicate;
if (!pred)
{
pred = gen_reg_rtx (BImode);
cfun->machine->omp_parallel_predicate = pred;
}
}
else
{
pred = cfun->machine->axis_predicate[mode - GOMP_DIM_WORKER];
if (!pred)
{
pred = gen_reg_rtx (BImode);
cfun->machine->axis_predicate[mode - GOMP_DIM_WORKER] = pred;
}
}
rtx br;
@ -5067,7 +5229,38 @@ nvptx_single (unsigned mask, basic_block from, basic_block to)
rtx tmp = gen_reg_rtx (BImode);
emit_insn_before (gen_movbi (tmp, const0_rtx),
bb_first_real_insn (from));
emit_insn_before (gen_rtx_SET (tmp, pvar), label);
if(flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
rtx nthr = cfun->machine->omp_fn_entry_num_threads_reg;
rtx single_p = gen_reg_rtx (BImode);
rtx_code_label *lbl_copy_tmp_pvar = gen_label_rtx ();
LABEL_NUSES (lbl_copy_tmp_pvar) = 1;
rtx_insn *lbl_fallthru = NEXT_INSN (tail);
gcc_assert (lbl_fallthru);
if (!LABEL_P (lbl_fallthru))
{
rtx_code_label *nlbl = gen_label_rtx ();
LABEL_NUSES (nlbl) = 1;
emit_label_before (nlbl, lbl_fallthru);
lbl_fallthru = nlbl;
}
emit_insn_before
(gen_rtx_SET (single_p,
gen_rtx_EQ (BImode, nthr, GEN_INT (1))),
label);
emit_insn_before
(gen_br_true (single_p, lbl_copy_tmp_pvar), label);
emit_jump_insn_before (copy_rtx (tail_branch), label);
emit_insn_before (gen_jump (lbl_fallthru), label);
emit_label_before (lbl_copy_tmp_pvar, label);
emit_insn_before (gen_rtx_SET (tmp, pvar), label);
}
else
emit_insn_before (gen_rtx_SET (tmp, pvar), label);
emit_insn_before (gen_rtx_SET (pvar, tmp), tail);
#endif
emit_insn_before (nvptx_gen_warp_bcast (pvar), tail);
@ -5826,10 +6019,29 @@ nvptx_reorg (void)
delete pars;
}
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& offloading_function_p (current_function_decl)
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl))
&& !lookup_attribute ("ompacc seq",
DECL_ATTRIBUTES (current_function_decl)))
{
cfun->machine->omp_fn_entry_num_threads_reg = gen_reg_rtx (SImode);
/* Discover & process partitioned regions. */
parallel *pars = nvptx_discover_pars (&bb_insn_map);
nvptx_process_pars (pars);
nvptx_neuter_pars (pars, GOMP_DIM_MASK (GOMP_DIM_VECTOR), 0);
delete pars;
}
/* Replace subregs. */
nvptx_reorg_subreg ();
if (TARGET_UNIFORM_SIMT)
if (TARGET_UNIFORM_SIMT
&& (flag_openmp_target != OMP_TARGET_MODE_OMPACC
|| !lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl))))
nvptx_reorg_uniform_simt ();
#if WORKAROUND_PTXJIT_BUG_2
@ -6076,6 +6288,12 @@ nvptx_file_end (void)
write_var_marker (asm_out_file, false, true, "__nvptx_uni");
fprintf (asm_out_file, ".extern .shared .u32 __nvptx_uni[32];\n");
}
if (need_omp_num_threads)
{
write_var_marker (asm_out_file, false, true, "__nvptx_omp_num_threads");
fprintf (asm_out_file,
".extern .shared .u32 __nvptx_omp_num_threads;\n");
}
}
/* Expander for the shuffle builtins. */
@ -6732,6 +6950,9 @@ nvptx_goacc_fork_join (gcall *call, const int dims[],
tree arg = gimple_call_arg (call, 2);
unsigned axis = TREE_INT_CST_LOW (arg);
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
return true;
/* We only care about worker and vector partitioning. */
if (axis < GOMP_DIM_WORKER)
return false;

3
gcc/config/nvptx/nvptx.h
View File

@ -267,6 +267,9 @@ struct GTY(()) machine_function
for per-lane storage in OpenMP SIMD regions. */
unsigned HOST_WIDE_INT simt_stack_size;
unsigned HOST_WIDE_INT simt_stack_align;
rtx omp_parallel_predicate;
rtx omp_fn_entry_num_threads_reg;
};
#endif

68
gcc/config/nvptx/nvptx.md
View File

@ -80,6 +80,14 @@
UNSPECV_SIMT_EXIT
UNSPECV_RED_PART
UNSPECV_GET_TID
UNSPECV_GET_NTID
UNSPECV_GET_CTAID
UNSPECV_GET_NCTAID
UNSPECV_OMP_PARALLEL_FORK
UNSPECV_OMP_PARALLEL_JOIN
])
(define_attr "subregs_ok" "false,true"
@ -123,6 +131,12 @@
: immediate_operand (op, mode));
})
(define_predicate "nvptx_shared_mem_operand"
(match_code "mem")
{
return nvptx_mem_shared_p (op);
})
(define_predicate "const0_operand"
(and (match_code "const_int")
(match_test "op == const0_rtx")))
@ -1774,6 +1788,60 @@
return asms[INTVAL (operands[1])];
})
(define_expand "gomp_barrier"
[(const_int 1)]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
{
emit_insn (gen_nvptx_barsync (GEN_INT (0), GEN_INT (0)));
DONE;
})
(define_expand "omp_get_num_threads"
[(match_operand 0 "nvptx_register_operand" "=R")]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
{
nvptx_expand_omp_get_num_threads (operands[0]);
DONE;
})
(define_insn "omp_get_num_teams"
[(set (match_operand:SI 0 "nvptx_register_operand" "=R")
(unspec_volatile:SI [(const_int 0)] UNSPECV_GET_NCTAID))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tmov.u32\\t%0, %%nctaid.x;")
(define_insn "omp_get_thread_num"
[(set (match_operand:SI 0 "nvptx_register_operand" "=R")
(unspec_volatile:SI [(const_int 0)] UNSPECV_GET_TID))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tmov.u32\\t%0, %%tid.x;")
(define_insn "omp_get_team_num"
[(set (match_operand:SI 0 "nvptx_register_operand" "=R")
(unspec_volatile:SI [(const_int 0)] UNSPECV_GET_CTAID))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tmov.u32\\t%0, %%ctaid.x;")
(define_insn "get_ntid"
[(set (match_operand:SI 0 "nvptx_register_operand" "=R")
(unspec_volatile:SI [(const_int 0)] UNSPECV_GET_NTID))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tmov.u32\\t%0, %%ntid.x;")
(define_insn "nvptx_omp_parallel_fork"
[(set (match_operand:SI 0 "nvptx_shared_mem_operand" "=m")
(unspec_volatile:SI [(match_operand:SI 1 "nvptx_register_operand" "R")]
UNSPECV_OMP_PARALLEL_FORK))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tst.shared.u32\\t%0, %1; //omp parallel fork")
(define_insn "nvptx_omp_parallel_join"
[(set (match_operand:SI 0 "nvptx_shared_mem_operand" "=m")
(unspec_volatile:SI [(match_operand:SI 1 "nvptx_register_operand" "R")]
UNSPECV_OMP_PARALLEL_JOIN))]
"flag_openmp_target == OMP_TARGET_MODE_OMPACC"
"%.\\tst.shared.u32\\t%0, %1; //omp parallel join")
(define_insn "nvptx_fork"
[(unspec_volatile:SI [(match_operand:SI 0 "const_int_operand" "")]
UNSPECV_FORK)]

3
gcc/expr.cc
View File

@ -10532,7 +10532,8 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
/* Allow accel compiler to handle variables that require special
treatment, e.g. if they have been modified in some way earlier in
compilation by the adjust_private_decl OpenACC hook. */
if (flag_openacc && targetm.goacc.expand_var_decl)
if ((flag_openacc || flag_openmp_target == OMP_TARGET_MODE_OMPACC)
&& targetm.goacc.expand_var_decl)
{
temp = targetm.goacc.expand_var_decl (exp);
if (temp)

6
gcc/flag-types.h
View File

@ -519,6 +519,12 @@ enum omp_target_simd_clone_device_kind
OMP_TARGET_SIMD_CLONE_ANY = 3
};
enum omp_target_mode_kind
{
OMP_TARGET_MODE_DEFAULT = 0,
OMP_TARGET_MODE_OMPACC = 1
};
#endif
#endif /* ! GCC_FLAG_TYPES_H */

33
gcc/gimplify.cc
View File

@ -253,6 +253,7 @@ struct gimplify_omp_ctx
bool order_concurrent;
bool has_depend;
bool in_for_exprs;
bool ompacc;
int defaultmap[5];
hash_map<tree, oacc_array_mapping_info> *decl_data_clause;
};
@ -11345,6 +11346,10 @@ gimplify_scan_omp_clauses (tree *list_p, gimple_seq *pre_p,
case OMP_CLAUSE_USES_ALLOCATORS:
break;
case OMP_CLAUSE__OMPACC_:
ctx->ompacc = true;
break;
case OMP_CLAUSE_ORDER:
ctx->order_concurrent = true;
break;
@ -12657,6 +12662,7 @@ gimplify_adjust_omp_clauses (gimple_seq *pre_p, gimple_seq body, tree *list_p,
case OMP_CLAUSE_FINALIZE:
case OMP_CLAUSE_INCLUSIVE:
case OMP_CLAUSE_EXCLUSIVE:
case OMP_CLAUSE__OMPACC_:
case OMP_CLAUSE_TILE:
case OMP_CLAUSE_UNROLL_FULL:
case OMP_CLAUSE_UNROLL_NONE:
@ -13250,6 +13256,21 @@ static void omp_for_drop_tile_clauses (tree for_stmt)
}
}
/* Return true if in an omp_context in OMPACC mode. */
static bool
gimplify_omp_ctx_ompacc_p (void)
{
if (cgraph_node::get (current_function_decl)->offloadable
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
return true;
struct gimplify_omp_ctx *ctx;
for (ctx = gimplify_omp_ctxp; ctx; ctx = ctx->outer_context)
if (ctx->ompacc)
return true;
return false;
}
/* Gimplify the gross structure of an OMP_FOR statement. */
static enum gimplify_status
@ -13281,6 +13302,18 @@ gimplify_omp_for (tree *expr_p, gimple_seq *pre_p)
*expr_p = NULL_TREE;
return GS_ERROR;
}
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& gimplify_omp_ctx_ompacc_p ())
{
gcc_assert (inner_for_stmt && TREE_CODE (for_stmt) == OMP_DISTRIBUTE);
*expr_p = OMP_FOR_BODY (for_stmt);
tree c = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE_GANG);
OMP_CLAUSE_CHAIN (c) = OMP_FOR_CLAUSES (inner_for_stmt);
OMP_FOR_CLAUSES (inner_for_stmt) = c;
return GS_OK;
}
if (data[2] && OMP_FOR_PRE_BODY (*data[2]))
{
append_to_statement_list_force (OMP_FOR_PRE_BODY (*data[2]),

1
gcc/lto-wrapper.cc
View File

@ -733,6 +733,7 @@ append_compiler_options (obstack *argv_obstack, vec<cl_decoded_option> opts)
case OPT_fcommon:
case OPT_fgnu_tm:
case OPT_fopenmp:
case OPT_fopenmp_target_:
case OPT_fopenacc:
case OPT_fopenacc_dim_:
case OPT_foffload_abi_:

4
gcc/omp-builtins.def
View File

@ -71,9 +71,9 @@ DEF_GOACC_BUILTIN_ONLY (BUILT_IN_GOACC_SINGLE_COPY_END, "GOACC_single_copy_end",
DEF_GOMP_BUILTIN (BUILT_IN_OMP_IS_INITIAL_DEVICE, "omp_is_initial_device",
BT_FN_INT, ATTR_CONST_NOTHROW_LEAF_LIST)
DEF_GOMP_BUILTIN (BUILT_IN_OMP_GET_THREAD_NUM, "omp_get_thread_num",
BT_FN_INT, ATTR_CONST_NOTHROW_LEAF_LIST)
BT_FN_INT, ATTR_NOTHROW_LEAF_LIST)
DEF_GOMP_BUILTIN (BUILT_IN_OMP_GET_NUM_THREADS, "omp_get_num_threads",
BT_FN_INT, ATTR_CONST_NOTHROW_LEAF_LIST)
BT_FN_INT, ATTR_NOTHROW_LEAF_LIST)
DEF_GOMP_BUILTIN (BUILT_IN_OMP_GET_TEAM_NUM, "omp_get_team_num",
BT_FN_INT, ATTR_CONST_NOTHROW_LEAF_LIST)
DEF_GOMP_BUILTIN (BUILT_IN_OMP_GET_NUM_TEAMS, "omp_get_num_teams",

67
gcc/omp-expand.cc
View File

@ -1050,11 +1050,16 @@ remove_exit_barrier (struct omp_region *region)
from within current function (this would be easy to check)
or from some function it calls and gets passed an address
of such a variable. */
gomp_parallel *parallel_stmt
= as_a <gomp_parallel *> (last_stmt (region->entry));
tree child_fun = gimple_omp_parallel_child_fn (parallel_stmt);
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& child_fun == NULL_TREE)
any_addressable_vars = 0;
if (any_addressable_vars < 0)
{
gomp_parallel *parallel_stmt
= as_a <gomp_parallel *> (last_stmt (region->entry));
tree child_fun = gimple_omp_parallel_child_fn (parallel_stmt);
tree local_decls, block, decl;
unsigned ix;
@ -7773,6 +7778,17 @@ expand_oacc_for (struct omp_region *region, struct omp_for_data *fd)
/* The SSA parallelizer does gang parallelism. */
gwv = build_int_cst (integer_type_node, GOMP_DIM_MASK (GOMP_DIM_GANG));
}
else if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
tree clauses = gimple_omp_for_clauses (for_stmt);
int omp_mask = 0;
if (omp_find_clause (clauses, OMP_CLAUSE_GANG))
omp_mask |= GOMP_DIM_MASK (GOMP_DIM_GANG);
if (omp_find_clause (clauses, OMP_CLAUSE_VECTOR))
omp_mask |= GOMP_DIM_MASK (GOMP_DIM_VECTOR);
gcc_assert (omp_mask);
gwv = build_int_cst (integer_type_node, omp_mask);
}
if (fd->collapse > 1 || fd->tiling)
{
@ -9816,6 +9832,13 @@ get_target_arguments (gimple_stmt_iterator *gsi, gomp_target *tgt_stmt)
t = OMP_CLAUSE_THREAD_LIMIT_EXPR (c);
else
t = integer_minus_one_node;
/* Currently, OMPACC mode has a limitation of only one warp thread. */
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute
("ompacc", DECL_ATTRIBUTES (gimple_omp_target_child_fn (tgt_stmt))))
t = integer_one_node;
push_target_argument_according_to_value (gsi, GOMP_TARGET_ARG_DEVICE_ALL,
GOMP_TARGET_ARG_THREAD_LIMIT, t,
&args);
@ -10698,6 +10721,44 @@ expand_omp (struct omp_region *region)
switch (region->type)
{
case GIMPLE_OMP_PARALLEL:
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
struct omp_region *r;
for (r = region->outer; r; r = r->outer)
if (r->type == GIMPLE_OMP_TARGET)
{
gomp_target *tgt
= as_a <gomp_target *> (last_stmt (r->entry));
tree tgtfn_attrs
= DECL_ATTRIBUTES (gimple_omp_target_child_fn (tgt));
if (!lookup_attribute ("ompacc", tgtfn_attrs))
r = NULL;
break;
}
if (r != NULL
|| (lookup_attribute
("ompacc", DECL_ATTRIBUTES (current_function_decl))))
{
gimple_stmt_iterator gsi;
gsi = gsi_last_nondebug_bb (region->entry);
gcc_assert (!gsi_end_p (gsi)
&& gimple_code
(gsi_stmt (gsi)) == GIMPLE_OMP_PARALLEL);
gsi_remove (&gsi, true);
if (region->exit)
{
gsi = gsi_last_nondebug_bb (region->exit);
gcc_assert (!gsi_end_p (gsi)
&& gimple_code
(gsi_stmt (gsi)) == GIMPLE_OMP_RETURN);
gsi_remove (&gsi, true);
}
break;
}
}
/* Fallthrough. */
case GIMPLE_OMP_TASK:
expand_omp_taskreg (region);
break;

11
gcc/omp-general.cc
View File

@ -202,8 +202,12 @@ omp_extract_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
struct omp_for_data_loop dummy_loop;
location_t loc = gimple_location (for_stmt);
bool simd = gimple_omp_for_kind (for_stmt) == GF_OMP_FOR_KIND_SIMD;
bool distribute = gimple_omp_for_kind (for_stmt)
== GF_OMP_FOR_KIND_DISTRIBUTE;
bool distribute =
(gimple_omp_for_kind (for_stmt) == GF_OMP_FOR_KIND_DISTRIBUTE
|| (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& gimple_omp_for_kind (for_stmt) == GF_OMP_FOR_KIND_OACC_LOOP
&& omp_find_clause (gimple_omp_for_clauses (for_stmt),
OMP_CLAUSE_GANG)));
bool taskloop = gimple_omp_for_kind (for_stmt)
== GF_OMP_FOR_KIND_TASKLOOP;
bool order_reproducible = false;
@ -441,7 +445,8 @@ omp_extract_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
loop->n2 = gimple_omp_for_final (for_stmt, i);
gcc_assert (loop->cond_code != NE_EXPR
|| (gimple_omp_for_kind (for_stmt)
!= GF_OMP_FOR_KIND_OACC_LOOP));
!= GF_OMP_FOR_KIND_OACC_LOOP)
|| flag_openmp_target == OMP_TARGET_MODE_OMPACC);
if (TREE_CODE (loop->n2) == TREE_VEC)
{
if (loop->outer)

150
gcc/omp-low.cc
View File

@ -187,6 +187,10 @@ struct omp_context
than teams is strictly nested in it. */
bool nonteams_nested_p;
/* Indicates that context is in OMPACC mode, set after _ompacc_ internal
clauses are removed. */
bool ompacc_p;
/* Candidates for adjusting OpenACC privatization level. */
vec<tree> oacc_privatization_candidates;
@ -2039,6 +2043,7 @@ scan_sharing_clauses (tree clauses, omp_context *ctx,
case OMP_CLAUSE_TASK_REDUCTION:
case OMP_CLAUSE_ALLOCATE:
case OMP_CLAUSE_ALLOCATOR:
case OMP_CLAUSE__OMPACC_:
break;
case OMP_CLAUSE_ALIGNED:
@ -2263,6 +2268,7 @@ scan_sharing_clauses (tree clauses, omp_context *ctx,
case OMP_CLAUSE_FILTER:
case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE_ALLOCATOR:
case OMP_CLAUSE__OMPACC_:
break;
case OMP_CLAUSE__CACHE_:
@ -2332,6 +2338,21 @@ omp_maybe_offloaded_ctx (omp_context *ctx)
return false;
}
static bool
ompacc_ctx_p (omp_context *ctx)
{
if (cgraph_node::get (current_function_decl)->offloadable
&& lookup_attribute ("ompacc",
DECL_ATTRIBUTES (current_function_decl)))
return true;
for (; ctx; ctx = ctx->outer)
if (is_gimple_omp_offloaded (ctx->stmt))
return (ctx->ompacc_p
|| omp_find_clause (gimple_omp_target_clauses (ctx->stmt),
OMP_CLAUSE__OMPACC_));
return false;
}
/* Build a decl for the omp child function. It'll not contain a body
yet, just the bare decl. */
@ -2641,8 +2662,28 @@ scan_omp_parallel (gimple_stmt_iterator *gsi, omp_context *outer_ctx)
DECL_NAMELESS (name) = 1;
TYPE_NAME (ctx->record_type) = name;
TYPE_ARTIFICIAL (ctx->record_type) = 1;
create_omp_child_function (ctx, false);
gimple_omp_parallel_set_child_fn (stmt, ctx->cb.dst_fn);
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& ompacc_ctx_p (ctx))
{
tree data_name = get_identifier (".omp_data_i_par");
tree t = build_decl (gimple_location (stmt), VAR_DECL, data_name,
ptr_type_node);
DECL_ARTIFICIAL (t) = 1;
DECL_NAMELESS (t) = 1;
DECL_CONTEXT (t) = current_function_decl;
DECL_SEEN_IN_BIND_EXPR_P (t) = 1;
DECL_CHAIN (t) = ctx->block_vars;
ctx->block_vars = t;
TREE_USED (t) = 1;
TREE_READONLY (t) = 1;
ctx->receiver_decl = t;
}
else
{
create_omp_child_function (ctx, false);
gimple_omp_parallel_set_child_fn (stmt, ctx->cb.dst_fn);
}
scan_sharing_clauses (gimple_omp_parallel_clauses (stmt), ctx);
scan_omp (gimple_omp_body_ptr (stmt), ctx);
@ -3565,6 +3606,24 @@ scan_omp_target (gomp_target *stmt, omp_context *outer_ctx)
scan_sharing_clauses (clauses, ctx, base_pointers_restrict);
scan_omp (gimple_omp_body_ptr (stmt), ctx);
if (offloaded && flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
for (tree *cp = gimple_omp_target_clauses_ptr (stmt); *cp;
cp = &OMP_CLAUSE_CHAIN (*cp))
if (OMP_CLAUSE_CODE (*cp) == OMP_CLAUSE__OMPACC_)
{
DECL_ATTRIBUTES (gimple_omp_target_child_fn (stmt))
= tree_cons (get_identifier ("ompacc"), NULL_TREE,
DECL_ATTRIBUTES (gimple_omp_target_child_fn (stmt)));
/* Unlink and remove. */
*cp = OMP_CLAUSE_CHAIN (*cp);
/* Set to true. */
ctx->ompacc_p = true;
break;
}
}
if (TYPE_FIELDS (ctx->record_type) == NULL)
ctx->record_type = ctx->receiver_decl = NULL;
else
@ -8947,6 +9006,9 @@ lower_oacc_head_mark (location_t loc, tree ddvar, tree clauses,
gcc_unreachable ();
else if (is_oacc_kernels_decomposed_part (tgt))
;
else if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& is_omp_target (tgt->stmt))
;
else
gcc_unreachable ();
@ -8975,7 +9037,13 @@ lower_oacc_head_mark (location_t loc, tree ddvar, tree clauses,
!= GF_OMP_TARGET_KIND_OACC_PARALLEL_KERNELS_GRAPHITE);
}
if (tag & OLF_TILE)
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& gimple_code (ctx->stmt) == GIMPLE_OMP_PARALLEL
&& tgt
&& ompacc_ctx_p (tgt))
levels = 1;
else
if (tag & OLF_TILE)
/* Tiling could use all 3 levels. */
levels = 3;
else
@ -12460,6 +12528,23 @@ lower_omp_for (gimple_stmt_iterator *gsi_p, omp_context *ctx)
push_gimplify_context ();
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC && ompacc_ctx_p (ctx))
{
enum omp_clause_code code = OMP_CLAUSE_ERROR;
if (gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_FOR)
code = OMP_CLAUSE_VECTOR;
else if (gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_DISTRIBUTE)
code = OMP_CLAUSE_GANG;
if (code)
{
/* Adjust into OACC loop kind with vector/gang clause. */
gimple_omp_for_set_kind (stmt, GF_OMP_FOR_KIND_OACC_LOOP);
tree c = build_omp_clause (UNKNOWN_LOCATION, code);
OMP_CLAUSE_CHAIN (c) = gimple_omp_for_clauses (stmt);
gimple_omp_for_set_clauses (stmt, c);
}
}
if (is_gimple_omp_oacc (ctx->stmt))
oacc_privatization_scan_clause_chain (ctx, gimple_omp_for_clauses (stmt));
@ -12481,7 +12566,9 @@ lower_omp_for (gimple_stmt_iterator *gsi_p, omp_context *ctx)
gbind *inner_bind
= as_a <gbind *> (gimple_seq_first_stmt (omp_for_body));
tree vars = gimple_bind_vars (inner_bind);
if (is_gimple_omp_oacc (ctx->stmt))
if (is_gimple_omp_oacc (ctx->stmt)
|| (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& ompacc_ctx_p (ctx)))
oacc_privatization_scan_decl_chain (ctx, vars);
gimple_bind_append_vars (new_stmt, vars);
/* bind_vars/BLOCK_VARS are being moved to new_stmt/block, don't
@ -12597,7 +12684,8 @@ lower_omp_for (gimple_stmt_iterator *gsi_p, omp_context *ctx)
lower_omp (gimple_omp_body_ptr (stmt), ctx);
gcall *private_marker = NULL;
if (is_gimple_omp_oacc (ctx->stmt)
if ((is_gimple_omp_oacc (ctx->stmt)
|| (flag_openmp_target == OMP_TARGET_MODE_OMPACC && ompacc_ctx_p (ctx)))
&& !gimple_seq_empty_p (omp_for_body))
private_marker = lower_oacc_private_marker (ctx);
@ -12652,15 +12740,16 @@ lower_omp_for (gimple_stmt_iterator *gsi_p, omp_context *ctx)
/* Once lowered, extract the bounds and clauses. */
omp_extract_for_data (stmt, &fd, NULL);
bool oacc_kernels_parloops = false;
if (param_openacc_kernels == OPENACC_KERNELS_DECOMPOSE_PARLOOPS
|| param_openacc_kernels == OPENACC_KERNELS_PARLOOPS)
oacc_kernels_parloops = ctx_in_oacc_kernels_region (ctx);
if (is_gimple_omp_oacc (ctx->stmt) && !oacc_kernels_parloops)
if (flag_openacc)
{
lower_oacc_head_tail (gimple_location (stmt),
gimple_omp_for_clauses (stmt), private_marker,
NULL, NULL, &oacc_head, &oacc_tail, ctx);
bool oacc_kernels_parloops = false;
if (param_openacc_kernels == OPENACC_KERNELS_DECOMPOSE_PARLOOPS
|| param_openacc_kernels == OPENACC_KERNELS_PARLOOPS)
oacc_kernels_parloops = ctx_in_oacc_kernels_region (ctx);
if (is_gimple_omp_oacc (ctx->stmt) && !oacc_kernels_parloops)
lower_oacc_head_tail (gimple_location (stmt),
gimple_omp_for_clauses (stmt), private_marker,
NULL, NULL, &oacc_head, &oacc_tail, ctx);
}
/* Add OpenACC partitioning and reduction markers just before the loop. */
@ -13447,9 +13536,20 @@ lower_omp_taskreg (gimple_stmt_iterator *gsi_p, omp_context *ctx)
bind = gimple_build_bind (NULL, NULL, make_node (BLOCK));
else
bind = gimple_build_bind (NULL, NULL, gimple_bind_block (par_bind));
gimple_seq oacc_head = NULL, oacc_tail = NULL;
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& gimple_code (stmt) == GIMPLE_OMP_PARALLEL
&& ompacc_ctx_p (ctx))
lower_oacc_head_tail (gimple_location (stmt), clauses,
NULL, NULL, NULL, &oacc_head, &oacc_tail,
ctx);
gsi_replace (gsi_p, dep_bind ? dep_bind : bind, true);
gimple_bind_add_seq (bind, ilist);
gimple_bind_add_seq (bind, oacc_head);
gimple_bind_add_stmt (bind, stmt);
gimple_bind_add_seq (bind, oacc_tail);
gimple_bind_add_seq (bind, olist);
pop_gimplify_context (NULL);
@ -15320,7 +15420,9 @@ lower_omp_target (gimple_stmt_iterator *gsi_p, omp_context *ctx)
gimple_seq fork_seq = NULL;
gimple_seq join_seq = NULL;
if (offloaded && is_gimple_omp_oacc (ctx->stmt))
if (offloaded && (is_gimple_omp_oacc (ctx->stmt)
|| (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& ompacc_ctx_p (ctx))))
{
/* If there are reductions on the offloaded region itself, treat
them as a dummy GANG loop. */
@ -15456,6 +15558,22 @@ lower_omp_teams (gimple_stmt_iterator *gsi_p, omp_context *ctx)
lower_omp (gimple_omp_body_ptr (teams_stmt), ctx);
lower_reduction_clauses (gimple_omp_teams_clauses (teams_stmt), &olist,
NULL, ctx);
if (flag_openmp_target == OMP_TARGET_MODE_OMPACC && ompacc_ctx_p (ctx))
{
/* Forward the team/gang-wide variables to outer target region. */
struct omp_context *tgt = ctx;
while (tgt && !is_gimple_omp_offloaded (tgt->stmt))
tgt = tgt->outer;
if (tgt)
{
int i;
tree decl;
FOR_EACH_VEC_ELT (ctx->oacc_privatization_candidates, i, decl)
tgt->oacc_privatization_candidates.safe_push (decl);
}
}
gimple_seq_add_stmt (&bind_body, teams_stmt);
gimple_seq_add_seq (&bind_body, gimple_omp_body (teams_stmt));
@ -15620,7 +15738,9 @@ lower_omp_1 (gimple_stmt_iterator *gsi_p, omp_context *ctx)
ctx);
break;
case GIMPLE_BIND:
if (ctx && is_gimple_omp_oacc (ctx->stmt))
if (ctx && (is_gimple_omp_oacc (ctx->stmt)
|| (flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& ompacc_ctx_p (ctx))))
{
tree vars = gimple_bind_vars (as_a <gbind *> (stmt));
oacc_privatization_scan_decl_chain (ctx, vars);

305
gcc/omp-offload.cc
View File

@ -388,6 +388,269 @@ omp_discover_implicit_declare_target (void)
lang_hooks.decls.omp_finish_decl_inits ();
}
static bool ompacc_supported_clauses_p (tree clauses)
{
for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c))
switch (OMP_CLAUSE_CODE (c))
{
case OMP_CLAUSE_COLLAPSE:
case OMP_CLAUSE_NOWAIT:
continue;
default:
return false;
}
return true;
}
struct target_region_data
{
tree func_decl;
bool has_omp_for;
bool has_omp_parallel;
bool ompacc_invalid;
auto_vec<const char *> warning_msgs;
auto_vec<location_t> warning_locs;
target_region_data (void)
: func_decl (NULL_TREE),
has_omp_for (false), has_omp_parallel (false), ompacc_invalid (false),
warning_msgs (), warning_locs () {}
};
static tree scan_omp_target_region_r (tree *, int *, void *);
static void
scan_fndecl_for_ompacc (tree decl, target_region_data *tgtdata)
{
target_region_data td;
td.func_decl = decl;
walk_tree_without_duplicates (&DECL_SAVED_TREE (decl),
scan_omp_target_region_r, &td);
tree v;
if ((v = lookup_attribute ("omp declare variant base",
DECL_ATTRIBUTES (decl)))
|| (v = lookup_attribute ("omp declare variant variant",
DECL_ATTRIBUTES (decl))))
{
td.ompacc_invalid = true;
td.warning_msgs.safe_push ("declare variant not supported for OMPACC");
td.warning_locs.safe_push (EXPR_LOCATION (v));
}
if (tgtdata)
{
tgtdata->has_omp_for |= td.has_omp_for;
tgtdata->has_omp_parallel |= td.has_omp_parallel;
tgtdata->ompacc_invalid |= td.ompacc_invalid;
for (unsigned i = 0; i < td.warning_msgs.length (); i++)
tgtdata->warning_msgs.safe_push (td.warning_msgs[i]);
for (unsigned i = 0; i < td.warning_locs.length (); i++)
tgtdata->warning_locs.safe_push (td.warning_locs[i]);
}
if (!td.ompacc_invalid
&& !lookup_attribute ("ompacc", DECL_ATTRIBUTES (decl)))
{
DECL_ATTRIBUTES (decl)
= tree_cons (get_identifier ("ompacc"), NULL_TREE,
DECL_ATTRIBUTES (decl));
if (!td.has_omp_parallel)
DECL_ATTRIBUTES (decl)
= tree_cons (get_identifier ("ompacc seq"), NULL_TREE,
DECL_ATTRIBUTES (decl));
}
}
static tree
scan_omp_target_region_r (tree *tp, int *walk_subtrees, void *data)
{
target_region_data *tgtdata = (target_region_data *) data;
if (TREE_CODE (*tp) == FUNCTION_DECL
&& !(fndecl_built_in_p (*tp, BUILT_IN_OMP_GET_THREAD_NUM)
|| fndecl_built_in_p (*tp, BUILT_IN_OMP_GET_NUM_THREADS)
|| fndecl_built_in_p (*tp, BUILT_IN_OMP_GET_TEAM_NUM)
|| fndecl_built_in_p (*tp, BUILT_IN_OMP_GET_NUM_TEAMS)
|| id_equal (DECL_NAME (*tp), "omp_get_thread_num")
|| id_equal (DECL_NAME (*tp), "omp_get_num_threads")
|| id_equal (DECL_NAME (*tp), "omp_get_team_num")
|| id_equal (DECL_NAME (*tp), "omp_get_num_teams"))
&& *tp != tgtdata->func_decl)
{
tree decl = *tp;
symtab_node *node = symtab_node::get (*tp);
if (node)
{
node = node->ultimate_alias_target ();
decl = node->decl;
}
if (!DECL_EXTERNAL (decl) && DECL_SAVED_TREE (decl))
{
scan_fndecl_for_ompacc (decl, tgtdata);
}
else
{
tgtdata->warning_msgs.safe_push ("referencing external function");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
tgtdata->ompacc_invalid = true;
}
*walk_subtrees = 0;
return NULL_TREE;
}
switch (TREE_CODE (*tp))
{
case OMP_FOR:
if (!ompacc_supported_clauses_p (OMP_CLAUSES (*tp)))
{
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("clauses not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
}
else if (OMP_FOR_NON_RECTANGULAR (*tp))
{
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("non-rectangular loops not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
}
else
tgtdata->has_omp_for = true;
break;
case OMP_PARALLEL:
if (!ompacc_supported_clauses_p (OMP_CLAUSES (*tp)))
{
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("clauses not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
}
else
tgtdata->has_omp_parallel = true;
break;
case OMP_DISTRIBUTE:
case OMP_TEAMS:
if (!ompacc_supported_clauses_p (OMP_CLAUSES (*tp)))
{
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("clauses not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
}
/* Fallthru. */
case OMP_ATOMIC:
case OMP_ATOMIC_READ:
case OMP_ATOMIC_CAPTURE_OLD:
case OMP_ATOMIC_CAPTURE_NEW:
break;
case OMP_SIMD:
case OMP_TASK:
case OMP_LOOP:
case OMP_TASKLOOP:
case OMP_TASKGROUP:
case OMP_SECTION:
case OMP_MASTER:
case OMP_MASKED:
case OMP_ORDERED:
case OMP_CRITICAL:
case OMP_SCAN:
case OMP_METADIRECTIVE:
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("construct not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
*walk_subtrees = 0;
break;
case OMP_TARGET:
tgtdata->ompacc_invalid = true;
tgtdata->warning_msgs.safe_push ("nested target/reverse offload "
"not supported");
tgtdata->warning_locs.safe_push (EXPR_LOCATION (*tp));
*walk_subtrees = 0;
break;
default:
break;
}
return NULL_TREE;
}
static tree
scan_omp_target_construct_r (tree *tp, int *walk_subtrees,
void *data)
{
if (TREE_CODE (*tp) == OMP_TARGET)
{
target_region_data td;
td.func_decl = (tree) data;
walk_tree_without_duplicates (&OMP_TARGET_BODY (*tp),
scan_omp_target_region_r, &td);
for (tree c = OMP_TARGET_CLAUSES (*tp); c; c = OMP_CLAUSE_CHAIN (c))
{
switch (OMP_CLAUSE_CODE (c))
{
case OMP_CLAUSE_MAP:
continue;
default:
td.ompacc_invalid = true;
td.warning_msgs.safe_push ("clause not supported");
td.warning_locs.safe_push (EXPR_LOCATION (c));
break;
}
break;
}
if (!td.ompacc_invalid)
{
tree c = build_omp_clause (EXPR_LOCATION (*tp), OMP_CLAUSE__OMPACC_);
if (!td.has_omp_parallel)
OMP_CLAUSE__OMPACC__SEQ (c) = 1;
OMP_CLAUSE_CHAIN (c) = OMP_TARGET_CLAUSES (*tp);
OMP_TARGET_CLAUSES (*tp) = c;
}
else
{
warning_at (EXPR_LOCATION (*tp), 0, "Target region not suitable for "
"OMPACC mode");
for (unsigned i = 0; i < td.warning_locs.length (); i++)
warning_at (td.warning_locs[i], 0, td.warning_msgs[i]);
}
*walk_subtrees = 0;
}
return NULL_TREE;
}
void
omp_ompacc_attribute_tagging (void)
{
cgraph_node *node;
FOR_EACH_DEFINED_FUNCTION (node)
if (DECL_SAVED_TREE (node->decl))
{
if (DECL_STRUCT_FUNCTION (node->decl)
&& DECL_STRUCT_FUNCTION (node->decl)->has_omp_target)
walk_tree_without_duplicates (&DECL_SAVED_TREE (node->decl),
scan_omp_target_construct_r,
node->decl);
for (cgraph_node *cgn = first_nested_function (node);
cgn; cgn = next_nested_function (cgn))
if (omp_declare_target_fn_p (cgn->decl))
{
scan_fndecl_for_ompacc (cgn->decl, NULL);
if (lookup_attribute ("ompacc", DECL_ATTRIBUTES (cgn->decl))
&& !lookup_attribute ("noinline", DECL_ATTRIBUTES (cgn->decl)))
{
DECL_ATTRIBUTES (cgn->decl)
= tree_cons (get_identifier ("noinline"),
NULL, DECL_ATTRIBUTES (cgn->decl));
DECL_ATTRIBUTES (cgn->decl)
= tree_cons (get_identifier ("noipa"),
NULL, DECL_ATTRIBUTES (cgn->decl));
}
}
}
}
/* Create new symbols containing (address, size) pairs for global variables,
marked with "omp declare target" attribute, as well as addresses for the
@ -480,6 +743,22 @@ omp_finish_file (void)
static tree
oacc_dim_call (bool pos, int dim, gimple_seq *seq)
{
if (flag_openmp && flag_openmp_target == OMP_TARGET_MODE_OMPACC)
{
enum built_in_function fn;
if (dim == GOMP_DIM_VECTOR)
fn = pos ? BUILT_IN_OMP_GET_THREAD_NUM : BUILT_IN_OMP_GET_NUM_THREADS;
else if (dim == GOMP_DIM_GANG)
fn = pos ? BUILT_IN_OMP_GET_TEAM_NUM : BUILT_IN_OMP_GET_NUM_TEAMS;
else
gcc_unreachable ();
tree size = create_tmp_var (integer_type_node);
gimple *call = gimple_build_call (builtin_decl_explicit (fn), 0);
gimple_call_set_lhs (call, size);
gimple_seq_add_stmt (seq, call);
return size;
}
tree arg = build_int_cst (unsigned_type_node, dim);
tree size = create_tmp_var (integer_type_node);
enum internal_fn fn = pos ? IFN_GOACC_DIM_POS : IFN_GOACC_DIM_SIZE;
@ -2776,15 +3055,19 @@ execute_oacc_loop_designation ()
static unsigned int
execute_oacc_device_lower ()
{
tree attrs = oacc_get_fn_attrib (current_function_decl);
if (!attrs)
/* Not an offloaded function. */
return 0;
tree attrs;
int dims[GOMP_DIM_MAX];
for (unsigned i = 0; i < GOMP_DIM_MAX; i++)
dims[i] = oacc_get_fn_dim_size (current_function_decl, i);
if (flag_openacc)
{
attrs = oacc_get_fn_attrib (current_function_decl);
if (!attrs)
/* Not an offloaded function. */
return 0;
for (unsigned i = 0; i < GOMP_DIM_MAX; i++)
dims[i] = oacc_get_fn_dim_size (current_function_decl, i);
}
hash_map<tree, tree> adjusted_vars;
@ -2853,7 +3136,8 @@ execute_oacc_device_lower ()
case IFN_UNIQUE_OACC_FORK:
case IFN_UNIQUE_OACC_JOIN:
if (integer_minus_onep (gimple_call_arg (call, 2)))
if (flag_openacc
&& integer_minus_onep (gimple_call_arg (call, 2)))
remove = true;
else if (!targetm.goacc.fork_join
(call, dims, kind == IFN_UNIQUE_OACC_FORK))
@ -3150,7 +3434,8 @@ public:
/* TODO If this were gated on something like '!(fun->curr_properties &
PROP_gimple_oaccdevlow)', then we could easily have several instances
in the pass pipeline? */
virtual bool gate (function *) { return flag_openacc; };
virtual bool gate (function *)
{ return flag_openacc || (flag_openmp && flag_openmp_target == OMP_TARGET_MODE_OMPACC); };
virtual unsigned int execute (function *)
{

1
gcc/omp-offload.h
View File

@ -31,6 +31,7 @@ extern GTY(()) vec<tree, va_gc> *offload_vars;
extern void omp_finish_file (void);
extern void omp_discover_implicit_declare_target (void);
extern void omp_ompacc_attribute_tagging (void);
extern tree oacc_extract_loop_call (gcall *call);

8
gcc/opts.cc
View File

@ -1393,6 +1393,14 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
}
if (opts_set->x_flag_openmp_target)
{
if (opts->x_flag_openacc)
error ("%<-fopenacc%> not compatible with %<-fopenmp-target=%>");
if (!opts->x_flag_openmp)
error ("%<-fopenmp-target=%> requires %<-fopenmp%> setting");
}
diagnose_options (opts, opts_set, loc);
}

5
gcc/target-insns.def
View File

@ -68,6 +68,11 @@ DEF_TARGET_INSN (oacc_dim_pos, (rtx x0, rtx x1))
DEF_TARGET_INSN (oacc_dim_size, (rtx x0, rtx x1))
DEF_TARGET_INSN (oacc_fork, (rtx x0, rtx x1, rtx x2))
DEF_TARGET_INSN (oacc_join, (rtx x0, rtx x1, rtx x2))
DEF_TARGET_INSN (gomp_barrier, (void))
DEF_TARGET_INSN (omp_get_thread_num, (rtx x0))
DEF_TARGET_INSN (omp_get_num_threads, (rtx x0))
DEF_TARGET_INSN (omp_get_team_num, (rtx x0))
DEF_TARGET_INSN (omp_get_num_teams, (rtx x0))
DEF_TARGET_INSN (omp_simt_enter, (rtx x0, rtx x1, rtx x2))
DEF_TARGET_INSN (omp_simt_exit, (rtx x0))
DEF_TARGET_INSN (omp_simt_lane, (rtx x0))

4
gcc/tree-core.h
View File

@ -498,6 +498,10 @@ enum omp_clause_code {
loop or not. */
OMP_CLAUSE__SIMT_,
/* Internally used only clause, flag whether this is an "ompacc"
target region or not. */
OMP_CLAUSE__OMPACC_,
/* OpenACC clause: independent. */
OMP_CLAUSE_INDEPENDENT,

2
gcc/tree-nested.cc
View File

@ -1491,6 +1491,7 @@ convert_nonlocal_omp_clauses (tree *pclauses, struct walk_stmt_info *wi)
case OMP_CLAUSE_BIND:
case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE__SCANTEMP_:
case OMP_CLAUSE__OMPACC_:
break;
/* The following clause belongs to the OpenACC cache directive, which
@ -2287,6 +2288,7 @@ convert_local_omp_clauses (tree *pclauses, struct walk_stmt_info *wi)
case OMP_CLAUSE_BIND:
case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE__SCANTEMP_:
case OMP_CLAUSE__OMPACC_:
break;
/* The following clause belongs to the OpenACC cache directive, which

6
gcc/tree-pretty-print.cc
View File

@ -1421,6 +1421,12 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
pp_string (pp, "_simt_");
break;
case OMP_CLAUSE__OMPACC_:
pp_string (pp, "_ompacc_");
if (OMP_CLAUSE__OMPACC__SEQ (clause))
pp_string (pp, "(seq)");
break;
case OMP_CLAUSE_GANG:
pp_string (pp, "gang");
if (OMP_CLAUSE_GANG_EXPR (clause) != NULL_TREE)

5
gcc/tree-ssa-loop.cc
View File

@ -282,6 +282,11 @@ public:
/* opt_pass methods: */
virtual bool gate (function *fn) {
if (flag_openmp
&& flag_openmp_target == OMP_TARGET_MODE_OMPACC
&& lookup_attribute ("ompacc", DECL_ATTRIBUTES (fn->decl)))
return true;
if (!flag_openacc)
return false;

2
gcc/tree.cc
View File

@ -340,6 +340,7 @@ unsigned const char omp_clause_num_ops[] =
1, /* OMP_CLAUSE_FILTER */
1, /* OMP_CLAUSE__SIMDUID_ */
0, /* OMP_CLAUSE__SIMT_ */
0, /* OMP_CLAUSE__OMPACC_ */
0, /* OMP_CLAUSE_INDEPENDENT */
1, /* OMP_CLAUSE_WORKER */
1, /* OMP_CLAUSE_VECTOR */
@ -437,6 +438,7 @@ const char * const omp_clause_code_name[] =
"filter",
"_simduid_",
"_simt_",
"_ompacc_",
"independent",
"worker",
"vector",

3
gcc/tree.h
View File

@ -1918,6 +1918,9 @@ class auto_suppress_location_wrappers
#define OMP_CLAUSE__SIMDUID__DECL(NODE) \
OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE__SIMDUID_), 0)
#define OMP_CLAUSE__OMPACC__SEQ(NODE) \
(OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE__OMPACC_)->base.public_flag)
#define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
(OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)

3
libgomp/config/nvptx/team.c
View File

@ -34,6 +34,9 @@
struct gomp_thread *nvptx_thrs __attribute__((shared,nocommon));
int __gomp_team_num __attribute__((shared,nocommon));
/* Number of active target threads in team, used in ACC mode. */
unsigned int __nvptx_omp_num_threads __attribute__((shared,nocommon));
static void gomp_thread_start (struct gomp_thread_pool *);
/* There should be some .shared space reserved for us. There's no way to

69
libgomp/testsuite/libgomp.c-c++-common/for-17.c Normal file
View File

@ -0,0 +1,69 @@
/* { dg-options "-fopenmp-target=acc" } */
/* { dg-additional-options "-std=gnu99" { target c } } */
#define M(x, y, z) O(x, y, z)
#define O(x, y, z) x ## _ ## y ## _ ## z
#define DO_PRAGMA(x) _Pragma (#x)
#undef OMPFROM
#undef OMPTO
#define OMPFROM(v) DO_PRAGMA (omp target update from(v))
#define OMPTO(v) DO_PRAGMA (omp target update to(v))
#pragma omp declare target
#define OMPTGT DO_PRAGMA (omp target)
#define F parallel for
#define G pf
#define S
#define N(x) M(x, G, ompacc)
#include "for-2.h"
#undef S
#undef N
#undef F
#undef G
#undef OMPTGT
#pragma omp end declare target
#define F target parallel for
#define G tpf
#define S
#define N(x) M(x, G, ompacc)
#include "for-2.h"
#undef S
#undef N
#undef F
#undef G
#define F target teams distribute
#define G ttd
#define S
#define N(x) M(x, G, ompacc)
#include "for-2.h"
#undef S
#undef N
#undef F
#undef G
#define F target teams distribute parallel for
#define G ttdpf
#define S
#define N(x) M(x, G, ompacc)
#include "for-2.h"
#undef S
#undef N
#undef F
#undef G
int
main ()
{
if (test_pf_ompacc ()
|| test_tpf_ompacc ()
|| test_ttd_ompacc ()
|| test_ttdpf_ompacc ())
__builtin_abort ();
return 0;
}

5
libgomp/testsuite/libgomp.c-c++-common/for-18.c Normal file
View File

@ -0,0 +1,5 @@
/* { dg-options "-fopenmp-target=acc" } */
/* { dg-additional-options "-std=gnu99" {target c } } */
#define CONDNE
#include "for-17.c"