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1 /* Export function prototypes from dojump.c.
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2 Copyright (C) 2015-2017 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_DOJUMP_H
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21 #define GCC_DOJUMP_H
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22
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23 /* At the start of a function, record that we have no previously-pushed
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24 arguments waiting to be popped. */
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25 extern void init_pending_stack_adjust (void);
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26
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27 /* Discard any pending stack adjustment. */
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28 extern void discard_pending_stack_adjust (void);
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29
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30 /* When exiting from function, if safe, clear out any pending stack adjust
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31 so the adjustment won't get done. */
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32 extern void clear_pending_stack_adjust (void);
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33
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34 /* Pop any previously-pushed arguments that have not been popped yet. */
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35 extern void do_pending_stack_adjust (void);
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36
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37 /* Struct for saving/restoring of pending_stack_adjust/stack_pointer_delta
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38 values. */
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39
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40 struct saved_pending_stack_adjust
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41 {
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42 /* Saved value of pending_stack_adjust. */
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43 int x_pending_stack_adjust;
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44
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45 /* Saved value of stack_pointer_delta. */
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46 int x_stack_pointer_delta;
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47 };
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48
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49 /* Remember pending_stack_adjust/stack_pointer_delta.
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50 To be used around code that may call do_pending_stack_adjust (),
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51 but the generated code could be discarded e.g. using delete_insns_since. */
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52
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53 extern void save_pending_stack_adjust (saved_pending_stack_adjust *);
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54
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55 /* Restore the saved pending_stack_adjust/stack_pointer_delta. */
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56
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57 extern void restore_pending_stack_adjust (saved_pending_stack_adjust *);
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58
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59 /* Generate code to evaluate EXP and jump to LABEL if the value is zero. */
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60 extern void jumpifnot (tree exp, rtx_code_label *label,
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61 profile_probability prob);
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62 extern void jumpifnot_1 (enum tree_code, tree, tree, rtx_code_label *,
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63 profile_probability);
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64
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65 /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */
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66 extern void jumpif (tree exp, rtx_code_label *label, profile_probability prob);
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67 extern void jumpif_1 (enum tree_code, tree, tree, rtx_code_label *,
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68 profile_probability);
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69
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70 /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
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71 the result is zero, or IF_TRUE_LABEL if the result is one. */
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72 extern void do_jump (tree exp, rtx_code_label *if_false_label,
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73 rtx_code_label *if_true_label, profile_probability prob);
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74 extern void do_jump_1 (enum tree_code, tree, tree, rtx_code_label *,
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75 rtx_code_label *, profile_probability);
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76
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77 extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
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78 machine_mode, rtx, rtx_code_label *,
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79 rtx_code_label *, profile_probability);
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80
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81 extern bool split_comparison (enum rtx_code, machine_mode,
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82 enum rtx_code *, enum rtx_code *);
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83
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84 #endif /* GCC_DOJUMP_H */
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