#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "backend.h"
#include "target.h"
#include "rtl.h"
#include "tree.h"
#include "regs.h"
#include "function-abi.h"
#include "varasm.h"
#include "cgraph.h"

Include dependency graph for function-abi.cc:

Functions
HARD_REG_SET	call_clobbers_in_region (unsigned int abis, const_hard_reg_set mask, machine_mode mode)

const predefined_function_abi &	fntype_abi (const_tree type)

function_abi	fndecl_abi (const_tree fndecl)

function_abi	insn_callee_abi (const rtx_insn *insn)

function_abi	expr_callee_abi (const_tree exp)

Variables
target_function_abi_info	default_target_function_abi_info

Function Documentation

◆ call_clobbers_in_region()

HARD_REG_SET call_clobbers_in_region	(	unsigned int	abis,
		const_hard_reg_set	mask,
		machine_mode	mode )

Return the set of registers that cannot be used to hold a value of
mode MODE across the calls in a region described by ABIS and MASK, where:

* Bit ID of ABIS is set if the region contains a call with
  function_abi identifier ID.

* MASK contains all the registers that are fully or partially
  clobbered by calls in the region.

This is not quite as accurate as testing each individual call,
but it's a close and conservatively-correct approximation.
It's much better for some targets than just using MASK.

References CLEAR_HARD_REG_SET, and function_abis.

Referenced by call_clobbered_in_region_p(), and ira_need_caller_save_regs().

◆ expr_callee_abi()

function_abi expr_callee_abi ( const_tree exp )

Return the ABI of the function called by CALL_EXPR EXP.  Return the
default ABI for erroneous calls.

References CALL_EXPR_FN, default_function_abi, error_mark_node, exp(), fndecl_abi(), fntype_abi(), gcc_assert, get_callee_fndecl(), POINTER_TYPE_P, TREE_CODE, and TREE_TYPE.

◆ fndecl_abi()

function_abi fndecl_abi ( const_tree fndecl )

Return the ABI of function decl FNDECL.

References decl_binds_to_current_def_p(), fntype_abi(), gcc_assert, cgraph_node::rtl_info(), TREE_CODE, and TREE_TYPE.

Referenced by expr_callee_abi(), insn_callee_abi(), prepare_function_start(), and read_rtl_function_body_from_file_range().

◆ fntype_abi()

const predefined_function_abi & fntype_abi ( const_tree type )

Return the predefined ABI used by functions with type TYPE.

References default_function_abi, FUNC_OR_METHOD_TYPE_P, gcc_assert, and targetm.

Referenced by aggregate_value_p(), expr_callee_abi(), and fndecl_abi().

◆ insn_callee_abi()

function_abi insn_callee_abi ( const rtx_insn * insn )

Return the ABI of the function called by INSN.

References CALL_P, default_function_abi, fndecl_abi(), gcc_assert, get_call_fndecl(), and targetm.

Referenced by build_def_use(), calculate_gen_cands(), collect_fn_hard_reg_usage(), compute_hash_table_work(), copyprop_hardreg_forward_1(), cselib_process_insn(), dataflow_set_clear_at_call(), df_get_call_refs(), do_remat(), find_all_hard_reg_sets(), find_equiv_reg(), inherit_in_ebb(), invalidate_for_call(), mark_set_resources(), mark_target_live_regs(), old_insns_match_p(), process_bb_lives(), process_bb_node_lives(), record_dead_and_set_regs(), record_opr_changes(), reg_set_p(), reload_combine(), reload_cse_move2add_invalidate(), save_call_clobbered_regs(), set_bb_regs(), setup_save_areas(), simplify_using_initial_values(), and update_equiv_regs_prescan().

Variable Documentation

◆ default_target_function_abi_info

target_function_abi_info default_target_function_abi_info

Information about fuunction binary interfaces.
   Copyright (C) 2019-2024 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/>.

Functions

Variables