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gcc/gcc/targhooks.h
Richard Sandiford 5a5a3bc5fa Add a function for getting the ABI of a call insn target 
This patch replaces get_call_reg_set_usage with insn_callee_abi,
which returns the ABI of the target of a call insn.  The ABI's
full_reg_clobbers corresponds to regs_invalidated_by_call,
whereas many callers instead passed call_used_or_fixed_regs, i.e.:

  (regs_invalidated_by_call | fixed_reg_set)

The patch slavishly preserves the "| fixed_reg_set" for these callers;
later patches will clean this up.

2019-09-30  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* target.def (insn_callee_abi): New hook.
	(remove_extra_call_preserved_regs): Delete.
	* doc/tm.texi.in (TARGET_INSN_CALLEE_ABI): New macro.
	(TARGET_REMOVE_EXTRA_CALL_PRESERVED_REGS): Delete.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_remove_extra_call_preserved_regs): Delete.
	* targhooks.c (default_remove_extra_call_preserved_regs): Delete.
	* config/aarch64/aarch64.c (aarch64_simd_call_p): Constify the
	insn argument.
	(aarch64_remove_extra_call_preserved_regs): Delete.
	(aarch64_insn_callee_abi): New function.
	(TARGET_REMOVE_EXTRA_CALL_PRESERVED_REGS): Delete.
	(TARGET_INSN_CALLEE_ABI): New macro.
	* rtl.h (get_call_fndecl): Declare.
	(cgraph_rtl_info): Fix formatting.  Tweak comment for
	function_used_regs.  Remove function_used_regs_valid.
	* rtlanal.c (get_call_fndecl): Moved from final.c
	* function-abi.h (insn_callee_abi): Declare.
	(target_function_abi_info): Mention insn_callee_abi.
	* function-abi.cc (fndecl_abi): Handle flag_ipa_ra in a similar
	way to get_call_reg_set_usage did.
	(insn_callee_abi): New function.
	* regs.h (get_call_reg_set_usage): Delete.
	* final.c: Include function-abi.h.
	(collect_fn_hard_reg_usage): Add fixed and stack registers to
	function_used_regs before the main loop rather than afterwards.
	Use insn_callee_abi instead of get_call_reg_set_usage.  Exit early
	if function_used_regs ends up not being useful.
	(get_call_fndecl): Move to rtlanal.c
	(get_call_cgraph_rtl_info, get_call_reg_set_usage): Delete.
	* caller-save.c: Include function-abi.h.
	(setup_save_areas, save_call_clobbered_regs): Use insn_callee_abi
	instead of get_call_reg_set_usage.
	* cfgcleanup.c: Include function-abi.h.
	(old_insns_match_p): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* cgraph.h (cgraph_node::rtl_info): Take a const_tree instead of
	a tree.
	* cgraph.c (cgraph_node::rtl_info): Likewise.  Initialize
	function_used_regs.
	* df-scan.c: Include function-abi.h.
	(df_get_call_refs): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* ira-lives.c: Include function-abi.h.
	(process_bb_node_lives): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* lra-lives.c: Include function-abi.h.
	(process_bb_lives): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* postreload.c: Include function-abi.h.
	(reload_combine): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* regcprop.c: Include function-abi.h.
	(copyprop_hardreg_forward_1): Use insn_callee_abi instead of
	get_call_reg_set_usage.
	* resource.c: Include function-abi.h.
	(mark_set_resources, mark_target_live_regs): Use insn_callee_abi
	instead of get_call_reg_set_usage.
	* var-tracking.c: Include function-abi.h.
	(dataflow_set_clear_at_call): Use insn_callee_abi instead of
	get_call_reg_set_usage.

From-SVN: r276309
2019-09-30 16:19:49 +00:00

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/* Default target hook functions.
Copyright (C) 2003-2019 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/>. */
#ifndef GCC_TARGHOOKS_H
#define GCC_TARGHOOKS_H
extern bool default_legitimate_address_p (machine_mode, rtx, bool);
extern void default_external_libcall (rtx);
extern rtx default_legitimize_address (rtx, rtx, machine_mode);
extern bool default_legitimize_address_displacement (rtx *, rtx *,
poly_int64, machine_mode);
extern bool default_const_not_ok_for_debug_p (rtx);
extern int default_unspec_may_trap_p (const_rtx, unsigned);
extern machine_mode default_promote_function_mode (const_tree, machine_mode,
int *, const_tree, int);
extern machine_mode default_promote_function_mode_always_promote
(const_tree, machine_mode, int *, const_tree, int);
extern machine_mode default_cc_modes_compatible (machine_mode,
machine_mode);
extern bool default_return_in_memory (const_tree, const_tree);
extern rtx default_expand_builtin_saveregs (void);
extern void default_setup_incoming_varargs (cumulative_args_t,
const function_arg_info &,
int *, int);
extern rtx default_builtin_setjmp_frame_value (void);
extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
extern scalar_int_mode default_eh_return_filter_mode (void);
extern scalar_int_mode default_libgcc_cmp_return_mode (void);
extern scalar_int_mode default_libgcc_shift_count_mode (void);
extern scalar_int_mode default_unwind_word_mode (void);
extern unsigned HOST_WIDE_INT default_shift_truncation_mask
(machine_mode);
extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode);
extern tree default_stack_protect_guard (void);
extern tree default_external_stack_protect_fail (void);
extern tree default_hidden_stack_protect_fail (void);
extern machine_mode default_mode_for_suffix (char);
extern tree default_cxx_guard_type (void);
extern tree default_cxx_get_cookie_size (tree);
extern bool hook_pass_by_reference_must_pass_in_stack
(cumulative_args_t, const function_arg_info &);
extern bool hook_callee_copies_named
(cumulative_args_t ca, const function_arg_info &);
extern void default_print_operand (FILE *, rtx, int);
extern void default_print_operand_address (FILE *, machine_mode, rtx);
extern bool default_print_operand_punct_valid_p (unsigned char);
extern tree default_mangle_assembler_name (const char *);
extern machine_mode default_translate_mode_attribute (machine_mode);
extern bool default_scalar_mode_supported_p (scalar_mode);
extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
extern opt_scalar_float_mode default_floatn_mode (int, bool);
extern bool default_floatn_builtin_p (int);
extern bool targhook_words_big_endian (void);
extern bool targhook_float_words_big_endian (void);
extern bool default_float_exceptions_rounding_supported_p (void);
extern bool default_decimal_float_supported_p (void);
extern bool default_fixed_point_supported_p (void);
extern bool default_has_ifunc_p (void);
extern bool default_predict_doloop_p (class loop *);
extern const char * default_invalid_within_doloop (const rtx_insn *);
extern tree default_builtin_vectorized_function (unsigned int, tree, tree);
extern tree default_builtin_md_vectorized_function (tree, tree, tree);
extern tree default_builtin_vectorized_conversion (unsigned int, tree, tree);
extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
extern tree default_builtin_reciprocal (tree);
extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode);
extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT);
extern HOST_WIDE_INT constant_alignment_word_strings (const_tree,
HOST_WIDE_INT);
extern HOST_WIDE_INT default_vector_alignment (const_tree);
extern poly_uint64 default_preferred_vector_alignment (const_tree);
extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
extern bool
default_builtin_support_vector_misalignment (machine_mode mode,
const_tree,
int, bool);
extern machine_mode default_preferred_simd_mode (scalar_mode mode);
extern machine_mode default_split_reduction (machine_mode);
extern void default_autovectorize_vector_sizes (vector_sizes *, bool);
extern opt_machine_mode default_get_mask_mode (poly_uint64, poly_uint64);
extern bool default_empty_mask_is_expensive (unsigned);
extern void *default_init_cost (class loop *);
extern unsigned default_add_stmt_cost (void *, int, enum vect_cost_for_stmt,
class _stmt_vec_info *, int,
enum vect_cost_model_location);
extern void default_finish_cost (void *, unsigned *, unsigned *, unsigned *);
extern void default_destroy_cost_data (void *);
/* OpenACC hooks. */
extern bool default_goacc_validate_dims (tree, int [], int, unsigned);
extern int default_goacc_dim_limit (int);
extern bool default_goacc_fork_join (gcall *, const int [], bool);
extern void default_goacc_reduction (gcall *);
/* These are here, and not in hooks.[ch], because not all users of
hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */
extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
extern bool hook_bool_CUMULATIVE_ARGS_arg_info_false
(cumulative_args_t, const function_arg_info &);
extern bool hook_bool_CUMULATIVE_ARGS_arg_info_true
(cumulative_args_t, const function_arg_info &);
extern int hook_int_CUMULATIVE_ARGS_arg_info_0
(cumulative_args_t, const function_arg_info &);
extern void hook_void_CUMULATIVE_ARGS_tree
(cumulative_args_t, tree);
extern const char *hook_invalid_arg_for_unprototyped_fn
(const_tree, const_tree, const_tree);
extern void default_function_arg_advance
(cumulative_args_t, const function_arg_info &);
extern HOST_WIDE_INT default_function_arg_offset (machine_mode, const_tree);
extern pad_direction default_function_arg_padding (machine_mode, const_tree);
extern rtx default_function_arg (cumulative_args_t, const function_arg_info &);
extern rtx default_function_incoming_arg (cumulative_args_t,
const function_arg_info &);
extern unsigned int default_function_arg_boundary (machine_mode,
const_tree);
extern unsigned int default_function_arg_round_boundary (machine_mode,
const_tree);
extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
extern rtx default_function_value (const_tree, const_tree, bool);
extern rtx default_libcall_value (machine_mode, const_rtx);
extern bool default_function_value_regno_p (const unsigned int);
extern rtx default_internal_arg_pointer (void);
extern rtx default_static_chain (const_tree, bool);
extern void default_trampoline_init (rtx, tree, rtx);
extern poly_int64 default_return_pops_args (tree, tree, poly_int64);
extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t,
reg_class_t);
extern bool default_lra_p (void);
extern int default_register_priority (int);
extern bool default_register_usage_leveling_p (void);
extern bool default_different_addr_displacement_p (void);
extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
machine_mode,
secondary_reload_info *);
extern machine_mode default_secondary_memory_needed_mode (machine_mode);
extern void default_target_option_override (void);
extern void hook_void_bitmap (bitmap);
extern int default_reloc_rw_mask (void);
extern bool default_generate_pic_addr_diff_vec (void);
extern tree default_mangle_decl_assembler_name (tree, tree);
extern tree default_emutls_var_fields (tree, tree *);
extern tree default_emutls_var_init (tree, tree, tree);
extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode);
extern bool default_hard_regno_scratch_ok (unsigned int);
extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
extern bool default_target_option_pragma_parse (tree, tree);
extern bool default_target_can_inline_p (tree, tree);
extern bool default_valid_pointer_mode (scalar_int_mode);
extern bool default_ref_may_alias_errno (class ao_ref *);
extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t);
extern scalar_int_mode default_addr_space_address_mode (addr_space_t);
extern bool default_addr_space_valid_pointer_mode (scalar_int_mode,
addr_space_t);
extern bool default_addr_space_legitimate_address_p (machine_mode, rtx,
bool, addr_space_t);
extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
addr_space_t);
extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
extern bool default_addr_space_zero_address_valid (addr_space_t);
extern int default_addr_space_debug (addr_space_t);
extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
extern rtx default_addr_space_convert (rtx, tree, tree);
extern unsigned int default_case_values_threshold (void);
extern bool default_have_conditional_execution (void);
extern bool default_libc_has_function (enum function_class);
extern bool default_libc_has_fast_function (int fcode);
extern bool no_c99_libc_has_function (enum function_class);
extern bool gnu_libc_has_function (enum function_class);
extern tree default_builtin_tm_load_store (tree);
extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
extern int default_register_move_cost (machine_mode, reg_class_t,
reg_class_t);
extern bool default_slow_unaligned_access (machine_mode, unsigned int);
extern HOST_WIDE_INT default_estimated_poly_value (poly_int64);
extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
unsigned int,
enum by_pieces_operation,
bool);
extern int default_compare_by_pieces_branch_ratio (machine_mode);
extern void default_print_patchable_function_entry (FILE *,
unsigned HOST_WIDE_INT,
bool);
extern bool default_profile_before_prologue (void);
extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
extern bool default_class_likely_spilled_p (reg_class_t);
extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
extern enum unwind_info_type default_debug_unwind_info (void);
extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
extern section * default_function_section(tree decl, enum node_frequency freq,
bool startup, bool exit);
extern unsigned int default_dwarf_poly_indeterminate_value (unsigned int,
unsigned int *,
int *);
extern machine_mode default_dwarf_frame_reg_mode (int);
extern fixed_size_mode default_get_reg_raw_mode (int);
extern bool default_keep_leaf_when_profiled ();
extern void *default_get_pch_validity (size_t *);
extern const char *default_pch_valid_p (const void *, size_t);
extern void default_asm_output_ident_directive (const char*);
extern scalar_int_mode default_cstore_mode (enum insn_code);
extern bool default_member_type_forces_blk (const_tree, machine_mode);
extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
extern tree build_va_arg_indirect_ref (tree);
extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
extern bool can_use_doloop_if_innermost (const widest_int &,
const widest_int &,
unsigned int, bool);
extern rtx default_load_bounds_for_arg (rtx, rtx, rtx);
extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx);
extern rtx default_load_returned_bounds (rtx);
extern void default_store_returned_bounds (rtx,rtx);
extern bool default_optab_supported_p (int, machine_mode, machine_mode,
optimization_type);
extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
extern bool default_noce_conversion_profitable_p (rtx_insn *,
struct noce_if_info *);
extern unsigned int default_min_arithmetic_precision (void);
extern enum flt_eval_method
default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED);
extern HOST_WIDE_INT default_stack_clash_protection_alloca_probe_range (void);
extern void default_select_early_remat_modes (sbitmap);
extern tree default_preferred_else_value (unsigned, tree, unsigned, tree *);
extern bool default_have_speculation_safe_value (bool);
extern bool speculation_safe_value_not_needed (bool);
extern rtx default_speculation_safe_value (machine_mode, rtx, rtx, rtx);
#endif /* GCC_TARGHOOKS_H */
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