text: /* Export function prototypes from dojump.c.
     Copyright (C) 2015-2018 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_DOJUMP_H
  #define GCC_DOJUMP_H
  
  /* At the start of a function, record that we have no previously-pushed
     arguments waiting to be popped.  */
  extern void init_pending_stack_adjust (void);
  
  /* Discard any pending stack adjustment.  */
  extern void discard_pending_stack_adjust (void);
  
  /* When exiting from function, if safe, clear out any pending stack adjust
     so the adjustment won't get done.  */
  extern void clear_pending_stack_adjust (void);
  
  /* Pop any previously-pushed arguments that have not been popped yet.  */
  extern void do_pending_stack_adjust (void);
  
  /* Struct for saving/restoring of pending_stack_adjust/stack_pointer_delta
     values.  */
  
  struct saved_pending_stack_adjust
  {
    /* Saved value of pending_stack_adjust.  */
    poly_int64 x_pending_stack_adjust;
  
    /* Saved value of stack_pointer_delta.  */
    poly_int64 x_stack_pointer_delta;
  };
  
  /* Remember pending_stack_adjust/stack_pointer_delta.
     To be used around code that may call do_pending_stack_adjust (),
     but the generated code could be discarded e.g. using delete_insns_since.  */
  
  extern void save_pending_stack_adjust (saved_pending_stack_adjust *);
  
  /* Restore the saved pending_stack_adjust/stack_pointer_delta.  */
  
  extern void restore_pending_stack_adjust (saved_pending_stack_adjust *);
  
  /* Generate code to evaluate EXP and jump to LABEL if the value is zero.  */
  extern void jumpifnot (tree exp, rtx_code_label *label,
  		       profile_probability prob);
  extern void jumpifnot_1 (enum tree_code, tree, tree, rtx_code_label *,
  			 profile_probability);
  
  /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero.  */
  extern void jumpif (tree exp, rtx_code_label *label, profile_probability prob);
  extern void jumpif_1 (enum tree_code, tree, tree, rtx_code_label *,
  		      profile_probability);
  
  /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
     the result is zero, or IF_TRUE_LABEL if the result is one.  */
  extern void do_jump (tree exp, rtx_code_label *if_false_label,
  		     rtx_code_label *if_true_label, profile_probability prob);
  extern void do_jump_1 (enum tree_code, tree, tree, rtx_code_label *,
  		       rtx_code_label *, profile_probability);
  
  extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
  				     machine_mode, rtx, rtx_code_label *,
  				     rtx_code_label *, profile_probability);
  
  extern bool split_comparison (enum rtx_code, machine_mode,
  			      enum rtx_code *, enum rtx_code *);
  
  #endif /* GCC_DOJUMP_H */
  