Mercurial > hg > CbC > CbC_gcc
annotate gcc/predict.h @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | 84e7813d76e9 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Definitions for branch prediction routines in the GNU compiler. |
| 145 | 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. |
| 0 | 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_PREDICT_H | |
| 21 #define GCC_PREDICT_H | |
| 22 | |
| 111 | 23 #include "profile-count.h" |
| 24 | |
| 25 /* Random guesstimation given names. | |
| 26 PROB_VERY_UNLIKELY should be small enough so basic block predicted | |
| 27 by it gets below HOT_BB_FREQUENCY_FRACTION. */ | |
| 28 #define PROB_VERY_UNLIKELY (REG_BR_PROB_BASE / 2000 - 1) | |
| 29 #define PROB_EVEN (REG_BR_PROB_BASE / 2) | |
| 30 #define PROB_VERY_LIKELY (REG_BR_PROB_BASE - PROB_VERY_UNLIKELY) | |
| 31 #define PROB_ALWAYS (REG_BR_PROB_BASE) | |
| 32 #define PROB_UNLIKELY (REG_BR_PROB_BASE / 5 - 1) | |
| 33 #define PROB_LIKELY (REG_BR_PROB_BASE - PROB_UNLIKELY) | |
| 131 | 34 #define PROB_UNINITIALIZED (-1) |
| 111 | 35 |
| 0 | 36 #define DEF_PREDICTOR(ENUM, NAME, HITRATE, FLAGS) ENUM, |
| 37 enum br_predictor | |
| 38 { | |
| 39 #include "predict.def" | |
| 40 | |
| 41 /* Upper bound on non-language-specific builtins. */ | |
| 42 END_PREDICTORS | |
| 43 }; | |
| 44 #undef DEF_PREDICTOR | |
| 45 enum prediction | |
| 46 { | |
| 47 NOT_TAKEN, | |
| 48 TAKEN | |
| 49 }; | |
| 50 | |
| 111 | 51 /* In emit-rtl.c. */ |
| 52 extern profile_probability split_branch_probability; | |
| 53 | |
| 54 extern gcov_type get_hot_bb_threshold (void); | |
| 55 extern void set_hot_bb_threshold (gcov_type); | |
| 56 extern bool maybe_hot_count_p (struct function *, profile_count); | |
| 57 extern bool maybe_hot_bb_p (struct function *, const_basic_block); | |
| 58 extern bool maybe_hot_edge_p (edge); | |
| 59 extern bool probably_never_executed_bb_p (struct function *, const_basic_block); | |
| 60 extern bool probably_never_executed_edge_p (struct function *, edge); | |
| 61 extern bool optimize_function_for_size_p (struct function *); | |
| 62 extern bool optimize_function_for_speed_p (struct function *); | |
| 63 extern optimization_type function_optimization_type (struct function *); | |
| 64 extern bool optimize_bb_for_size_p (const_basic_block); | |
| 65 extern bool optimize_bb_for_speed_p (const_basic_block); | |
| 66 extern optimization_type bb_optimization_type (const_basic_block); | |
| 67 extern bool optimize_edge_for_size_p (edge); | |
| 68 extern bool optimize_edge_for_speed_p (edge); | |
| 69 extern bool optimize_insn_for_size_p (void); | |
| 70 extern bool optimize_insn_for_speed_p (void); | |
| 145 | 71 extern bool optimize_loop_for_size_p (class loop *); |
| 72 extern bool optimize_loop_for_speed_p (class loop *); | |
| 73 extern bool optimize_loop_nest_for_speed_p (class loop *); | |
| 74 extern bool optimize_loop_nest_for_size_p (class loop *); | |
| 111 | 75 extern bool predictable_edge_p (edge); |
| 76 extern void rtl_profile_for_bb (basic_block); | |
| 77 extern void rtl_profile_for_edge (edge); | |
| 78 extern void default_rtl_profile (void); | |
| 79 extern bool rtl_predicted_by_p (const_basic_block, enum br_predictor); | |
| 80 extern bool gimple_predicted_by_p (const_basic_block, enum br_predictor); | |
| 81 extern bool edge_probability_reliable_p (const_edge); | |
| 82 extern bool br_prob_note_reliable_p (const_rtx); | |
| 83 extern void predict_insn_def (rtx_insn *, enum br_predictor, enum prediction); | |
| 84 extern void rtl_predict_edge (edge, enum br_predictor, int); | |
| 85 extern void gimple_predict_edge (edge, enum br_predictor, int); | |
| 86 extern void remove_predictions_associated_with_edge (edge); | |
| 87 extern void predict_edge_def (edge, enum br_predictor, enum prediction); | |
| 88 extern void invert_br_probabilities (rtx); | |
| 89 extern void guess_outgoing_edge_probabilities (basic_block); | |
| 90 extern void tree_guess_outgoing_edge_probabilities (basic_block); | |
| 91 extern void tree_estimate_probability (bool); | |
| 92 extern void handle_missing_profiles (void); | |
| 131 | 93 extern bool update_max_bb_count (void); |
| 111 | 94 extern bool expensive_function_p (int); |
| 95 extern void estimate_bb_frequencies (bool); | |
| 96 extern void compute_function_frequency (void); | |
| 97 extern tree build_predict_expr (enum br_predictor, enum prediction); | |
| 0 | 98 extern const char *predictor_name (enum br_predictor); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
99 extern void rebuild_frequencies (void); |
| 111 | 100 extern void report_predictor_hitrates (void); |
| 101 extern void force_edge_cold (edge, bool); | |
| 102 extern void propagate_unlikely_bbs_forward (void); | |
| 103 | |
| 104 extern void add_reg_br_prob_note (rtx_insn *, profile_probability); | |
| 105 | |
| 106 /* In ipa-pure-const.c */ | |
| 107 extern void warn_function_cold (tree); | |
| 0 | 108 |
| 109 #endif /* GCC_PREDICT_H */ |