1  /* Export function prototypes from dojump.cc.
       2     Copyright (C) 2015-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef GCC_DOJUMP_H
      21  #define GCC_DOJUMP_H
      22  
      23  /* At the start of a function, record that we have no previously-pushed
      24     arguments waiting to be popped.  */
      25  extern void init_pending_stack_adjust (void);
      26  
      27  /* Discard any pending stack adjustment.  */
      28  extern void discard_pending_stack_adjust (void);
      29  
      30  /* When exiting from function, if safe, clear out any pending stack adjust
      31     so the adjustment won't get done.  */
      32  extern void clear_pending_stack_adjust (void);
      33  
      34  /* Pop any previously-pushed arguments that have not been popped yet.  */
      35  extern void do_pending_stack_adjust (void);
      36  
      37  /* Struct for saving/restoring of pending_stack_adjust/stack_pointer_delta
      38     values.  */
      39  
      40  class saved_pending_stack_adjust
      41  {
      42  public:
      43    /* Saved value of pending_stack_adjust.  */
      44    poly_int64 x_pending_stack_adjust;
      45  
      46    /* Saved value of stack_pointer_delta.  */
      47    poly_int64 x_stack_pointer_delta;
      48  };
      49  
      50  /* Remember pending_stack_adjust/stack_pointer_delta.
      51     To be used around code that may call do_pending_stack_adjust (),
      52     but the generated code could be discarded e.g. using delete_insns_since.  */
      53  
      54  extern void save_pending_stack_adjust (saved_pending_stack_adjust *);
      55  
      56  /* Restore the saved pending_stack_adjust/stack_pointer_delta.  */
      57  
      58  extern void restore_pending_stack_adjust (saved_pending_stack_adjust *);
      59  
      60  extern bool split_comparison (enum rtx_code, machine_mode,
      61  			      enum rtx_code *, enum rtx_code *);
      62  
      63  /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero.  */
      64  extern void jumpif (tree exp, rtx_code_label *label, profile_probability prob);
      65  extern void jumpif_1 (enum tree_code, tree, tree, rtx_code_label *,
      66  		      profile_probability);
      67  
      68  /* Generate code to evaluate EXP and jump to LABEL if the value is zero.  */
      69  extern void jumpifnot (tree exp, rtx_code_label *label,
      70  		       profile_probability prob);
      71  extern void jumpifnot_1 (enum tree_code, tree, tree, rtx_code_label *,
      72  			 profile_probability);
      73  
      74  extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int, tree,
      75  				     machine_mode, rtx, rtx_code_label *,
      76  				     rtx_code_label *, profile_probability);
      77  
      78  extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
      79  				     machine_mode, rtx, rtx_code_label *,
      80  				     rtx_code_label *, profile_probability);
      81  
      82  #endif /* GCC_DOJUMP_H */