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      1 /* Definitions of target machine for GNU compiler, EPIPHANY cpu.
      2    Copyright (C) 2000-2024 Free Software Foundation, Inc.
      3    Contributed by Embecosm on behalf of Adapteva, Inc.
      4 
      5 This file is part of GCC.
      6 
      7 GCC is free software; you can redistribute it and/or modify
      8 it under the terms of the GNU General Public License as published by
      9 the Free Software Foundation; either version 3, or (at your option)
     10 any later version.
     11 
     12 GCC is distributed in the hope that it will be useful,
     13 but WITHOUT ANY WARRANTY; without even the implied warranty of
     14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15 GNU General Public License for more details.
     16 
     17 You should have received a copy of the GNU General Public License
     18 along with GCC; see the file COPYING3.  If not see
     19 <http://www.gnu.org/licenses/>.  */
     20 
     21 #ifdef RTX_CODE
     22 extern machine_mode epiphany_select_cc_mode (enum rtx_code, rtx, rtx);
     23 
     24 /* Define the function that build the compare insn for scc and bcc.  */
     25 extern struct rtx_def *gen_compare_reg (machine_mode, enum rtx_code,
     26 					machine_mode, rtx, rtx);
     27 #endif
     28 
     29 /* Declarations for various fns used in the .md file.  */
     30 extern void epiphany_final_prescan_insn (rtx_insn *, rtx *, int);
     31 extern bool epiphany_is_long_call_p (rtx);
     32 extern bool epiphany_small16 (rtx);
     33 bool epiphany_uninterruptible_p (tree decl);
     34 bool epiphany_call_uninterruptible_p (rtx mem);
     35 extern rtx sfunc_symbol (const char *name);
     36 
     37 extern void epiphany_expand_prologue (void);
     38 extern void epiphany_expand_epilogue (int);
     39 extern int epiphany_initial_elimination_offset (int, int);
     40 extern void epiphany_init_expanders (void);
     41 #ifdef HARD_CONST
     42 extern void emit_set_fp_mode (int entity, int mode, int prev_mode,
     43 			      HARD_REG_SET regs_live);
     44 #endif
     45 extern void epiphany_insert_mode_switch_use (rtx_insn *insn, int, int);
     46 extern void epiphany_expand_set_fp_mode (rtx *operands);
     47 #ifdef HARD_CONST
     48 extern int epiphany_mode_needed (int entity, rtx_insn *insn, HARD_REG_SET);
     49 extern int epiphany_mode_after (int entity, int last_mode, rtx_insn *insn,
     50 				HARD_REG_SET);
     51 #endif
     52 extern bool epiphany_epilogue_uses (int regno);
     53 extern bool epiphany_optimize_mode_switching (int entity);
     54 extern bool epiphany_is_interrupt_p (tree);
     55 extern unsigned epiphany_special_round_type_align (tree, unsigned, unsigned);
     56 extern unsigned epiphany_adjust_field_align (tree, unsigned);
     57 extern void epiphany_start_function (FILE *f, const char *name, tree decl);
     58 extern bool epiphany_regno_rename_ok (unsigned src, unsigned dst);
     59 
     60 /* Also declared in insn-attr.h, but files generated from epiphany.md
     61    can't / won't include that.  In particular:
     62    PR other/55523: gencondmd file includes / dependencies are messed up,
     63    it uses peephole2 predicates without having all the necessary headers.  */
     64 extern int get_attr_sched_use_fpu (rtx_insn *);
     65 
     66