1  /* Definitions of target machine for GNU compiler, EPIPHANY cpu.
       2     Copyright (C) 2000-2023 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  extern int epiphany_mode_needed (int entity, rtx_insn *insn);
      48  extern int epiphany_mode_after (int entity, int last_mode, rtx_insn *insn);
      49  extern bool epiphany_epilogue_uses (int regno);
      50  extern bool epiphany_optimize_mode_switching (int entity);
      51  extern bool epiphany_is_interrupt_p (tree);
      52  extern unsigned epiphany_special_round_type_align (tree, unsigned, unsigned);
      53  extern unsigned epiphany_adjust_field_align (tree, unsigned);
      54  extern void epiphany_start_function (FILE *f, const char *name, tree decl);
      55  extern bool epiphany_regno_rename_ok (unsigned src, unsigned dst);
      56  
      57  /* Also declared in insn-attr.h, but files generated from epiphany.md
      58     can't / won't include that.  In particular:
      59     PR other/55523: gencondmd file includes / dependencies are messed up,
      60     it uses peephole2 predicates without having all the necessary headers.  */
      61  extern int get_attr_sched_use_fpu (rtx_insn *);
      62