Collaboration diagram for omp_context:

[legend]

Data Fields
copy_body_data	cb

struct omp_context *	outer

gimple *	stmt

splay_tree	field_map

tree	record_type

tree	sender_decl

tree	receiver_decl

splay_tree	sfield_map

tree	srecord_type

tree	block_vars

tree	cancel_label

gimple *	simt_stmt

vec< tree >	task_reductions

hash_map< tree, unsigned > *	task_reduction_map

hash_map< tree, tree > *	lastprivate_conditional_map

hash_map< tree, tree > *	allocate_map

tree	local_reduction_clauses

tree	outer_reduction_clauses

int	depth

bool	is_nested

bool	cancellable

bool	combined_into_simd_safelen1

bool	scan_inclusive

bool	scan_exclusive

bool	for_simd_scan_phase

bool	order_concurrent

bool	loop_p

bool	teams_nested_p

bool	nonteams_nested_p

vec< tree >	oacc_privatization_candidates

Detailed Description

Lowering pass for OMP directives.  Converts OMP directives into explicit
   calls to the runtime library (libgomp), data marshalling to implement data
   sharing and copying clauses, offloading to accelerators, and more.

   Contributed by Diego Novillo <dnovillo@redhat.com>

   Copyright (C) 2005-2025 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.

Lowering of OMP parallel and workshare constructs proceeds in two
phases.  The first phase scans the function looking for OMP statements
and then for variables that must be replaced to satisfy data sharing
clauses.  The second phase expands code for the constructs, as well as
re-gimplifying things when variables have been replaced with complex
expressions.

Final code generation is done by pass_expand_omp.  The flowgraph is
scanned for regions which are then moved to a new
function, to be invoked by the thread library, or offloaded.

Context structure.  Used to store information about each parallel
directive in the code.

Field Documentation

◆ allocate_map

hash_map<tree, tree>* omp_context::allocate_map

Referenced by create_task_copyfn(), delete_omp_context(), lower_private_allocate(), lower_rec_input_clauses(), lower_send_shared_vars(), and scan_sharing_clauses().

◆ block_vars

tree omp_context::block_vars

Referenced by lower_lastprivate_conditional_clauses(), lower_omp_dispatch(), lower_omp_for(), lower_omp_interop(), lower_omp_master(), lower_omp_ordered(), lower_omp_scope(), lower_omp_sections(), lower_omp_single(), lower_omp_target(), lower_omp_taskgroup(), lower_omp_taskreg(), lower_omp_teams(), and omp_copy_decl_2().

◆ cancel_label

tree omp_context::cancel_label

Referenced by lower_omp_1(), lower_omp_for(), lower_omp_sections(), and lower_omp_taskreg().

◆ cancellable

bool omp_context::cancellable

Referenced by check_omp_nesting_restrictions(), lower_omp_1(), lower_omp_for(), lower_omp_sections(), and lower_omp_taskreg().

◆ cb

◆ combined_into_simd_safelen1

bool omp_context::combined_into_simd_safelen1

Referenced by lower_lastprivate_clauses(), and lower_rec_input_clauses().

◆ depth

int omp_context::depth

Referenced by new_omp_context().

◆ field_map

splay_tree omp_context::field_map

Referenced by build_outer_var_ref(), create_task_copyfn(), delete_omp_context(), fixup_child_record_type(), install_var_field(), lookup_field(), lookup_sfield(), lower_omp_target(), lower_rec_input_clauses(), maybe_lookup_field(), scan_omp_parallel(), scan_omp_single(), scan_omp_target(), scan_omp_task(), scan_omp_teams(), and scan_sharing_clauses().

◆ for_simd_scan_phase

bool omp_context::for_simd_scan_phase

Referenced by lower_omp_scan(), lower_rec_input_clauses(), lower_rec_simd_input_clauses(), and scan_omp_simd_scan().

◆ is_nested

bool omp_context::is_nested

Referenced by lookup_decl_in_outer_ctx(), scan_omp_parallel(), scan_omp_task(), and use_pointer_for_field().

◆ lastprivate_conditional_map

hash_map<tree, tree>* omp_context::lastprivate_conditional_map

Referenced by delete_omp_context(), lower_lastprivate_clauses(), lower_lastprivate_conditional_clauses(), and lower_rec_input_clauses().

◆ local_reduction_clauses

tree omp_context::local_reduction_clauses

Referenced by scan_omp_for(), and scan_sharing_clauses().

◆ loop_p

bool omp_context::loop_p

Referenced by build_outer_var_ref(), check_omp_nesting_restrictions(), scan_omp_1_stmt(), and scan_sharing_clauses().

◆ nonteams_nested_p

bool omp_context::nonteams_nested_p

Referenced by check_omp_nesting_restrictions(), and scan_omp_target().

◆ oacc_privatization_candidates

vec<tree> omp_context::oacc_privatization_candidates

Referenced by lower_oacc_private_marker(), oacc_privatization_scan_clause_chain(), and oacc_privatization_scan_decl_chain().

◆ order_concurrent

bool omp_context::order_concurrent

Referenced by check_omp_nesting_restrictions(), scan_omp_1_stmt(), and scan_sharing_clauses().

◆ outer

◆ outer_reduction_clauses

tree omp_context::outer_reduction_clauses

Referenced by scan_omp_for().

◆ receiver_decl

tree omp_context::receiver_decl

Referenced by build_outer_var_ref(), build_receiver_ref(), create_omp_child_function(), fixup_child_record_type(), lower_omp_single_copy(), lower_omp_target(), lower_omp_taskreg(), scan_omp_parallel(), scan_omp_target(), scan_omp_task(), and scan_omp_teams().

◆ record_type

tree omp_context::record_type

Referenced by create_task_copyfn(), delete_omp_context(), finish_taskreg_scan(), fixup_child_record_type(), install_var_field(), lower_omp_scope(), lower_omp_single(), lower_omp_single_copy(), lower_omp_target(), lower_omp_taskreg(), lower_send_shared_vars(), scan_omp_parallel(), scan_omp_single(), scan_omp_target(), scan_omp_task(), scan_omp_teams(), and scan_sharing_clauses().

◆ scan_exclusive

bool omp_context::scan_exclusive

Referenced by lower_omp_for(), lower_omp_for_scan(), lower_omp_scan(), lower_rec_input_clauses(), lower_rec_simd_input_clauses(), lower_reduction_clauses(), and scan_omp_1_stmt().

◆ scan_inclusive

bool omp_context::scan_inclusive

Referenced by lower_omp_for(), lower_omp_for_scan(), lower_omp_scan(), lower_rec_input_clauses(), lower_reduction_clauses(), scan_omp_1_stmt(), and scan_omp_simd_scan().

◆ sender_decl

tree omp_context::sender_decl

Referenced by build_sender_ref(), lower_omp_scope(), lower_omp_single(), lower_omp_single_copy(), lower_omp_target(), lower_omp_taskreg(), and lower_send_clauses().

◆ sfield_map

splay_tree omp_context::sfield_map

Referenced by create_task_copyfn(), delete_omp_context(), install_var_field(), lookup_sfield(), and task_copyfn_copy_decl().

◆ simt_stmt

gimple* omp_context::simt_stmt

Referenced by lower_omp_for(), and scan_omp_simd().

◆ srecord_type

tree omp_context::srecord_type

Referenced by create_task_copyfn(), delete_omp_context(), finish_taskreg_scan(), install_var_field(), lower_omp_taskreg(), lower_send_shared_vars(), and scan_omp_task().

◆ stmt

gimple* omp_context::stmt

Referenced by build_outer_var_ref(), check_oacc_kernel_gwv(), check_omp_nesting_restrictions(), create_omp_child_function(), ctx_in_oacc_kernels_region(), enclosing_target_ctx(), finish_taskreg_scan(), fixup_child_record_type(), install_var_field(), is_host_teams_ctx(), is_oacc_kernels(), is_oacc_kernels_decomposed_part(), is_oacc_parallel_or_serial(), is_omp_target(), is_parallel_ctx(), is_task_ctx(), is_taskloop_ctx(), lower_lastprivate_clauses(), lower_lastprivate_conditional_clauses(), lower_oacc_reductions(), lower_omp_1(), lower_omp_critical(), lower_omp_for(), lower_omp_for_lastprivate(), lower_omp_ordered_clauses(), lower_omp_scan(), lower_omp_target(), lower_omp_task_reductions(), lower_omp_taskreg(), lower_rec_input_clauses(), lower_rec_simd_input_clauses(), lower_reduction_clauses(), lower_send_clauses(), new_omp_context(), oacc_privatization_scan_decl_chain(), omp_maybe_offloaded_ctx(), scan_omp_1_stmt(), scan_omp_for(), scan_omp_simd(), scan_omp_simd_scan(), scan_sharing_clauses(), task_copyfn_remap_type(), and use_pointer_for_field().

◆ task_reduction_map

hash_map<tree, unsigned>* omp_context::task_reduction_map

Referenced by delete_omp_context(), lower_omp_task_reductions(), and lower_rec_input_clauses().

◆ task_reductions

vec<tree> omp_context::task_reductions