138fd1498Szrj /* Definitions for transformations based on profile information for values. 238fd1498Szrj Copyright (C) 2003-2018 Free Software Foundation, Inc. 338fd1498Szrj 438fd1498Szrj This file is part of GCC. 538fd1498Szrj 638fd1498Szrj GCC is free software; you can redistribute it and/or modify it under 738fd1498Szrj the terms of the GNU General Public License as published by the Free 838fd1498Szrj Software Foundation; either version 3, or (at your option) any later 938fd1498Szrj version. 1038fd1498Szrj 1138fd1498Szrj GCC is distributed in the hope that it will be useful, but WITHOUT ANY 1238fd1498Szrj WARRANTY; without even the implied warranty of MERCHANTABILITY or 1338fd1498Szrj FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1438fd1498Szrj for more details. 1538fd1498Szrj 1638fd1498Szrj You should have received a copy of the GNU General Public License 1738fd1498Szrj along with GCC; see the file COPYING3. If not see 1838fd1498Szrj <http://www.gnu.org/licenses/>. */ 1938fd1498Szrj 2038fd1498Szrj #ifndef GCC_VALUE_PROF_H 2138fd1498Szrj #define GCC_VALUE_PROF_H 2238fd1498Szrj 2338fd1498Szrj /* Supported histogram types. */ 2438fd1498Szrj enum hist_type 2538fd1498Szrj { 2638fd1498Szrj HIST_TYPE_INTERVAL, /* Measures histogram of values inside a specified 2738fd1498Szrj interval. */ 2838fd1498Szrj HIST_TYPE_POW2, /* Histogram of power of 2 values. */ 2938fd1498Szrj HIST_TYPE_SINGLE_VALUE, /* Tries to identify the value that is (almost) 3038fd1498Szrj always constant. */ 3138fd1498Szrj HIST_TYPE_INDIR_CALL, /* Tries to identify the function that is (almost) 3238fd1498Szrj called in indirect call */ 3338fd1498Szrj HIST_TYPE_AVERAGE, /* Compute average value (sum of all values). */ 3438fd1498Szrj HIST_TYPE_IOR, /* Used to compute expected alignment. */ 3538fd1498Szrj HIST_TYPE_TIME_PROFILE, /* Used for time profile */ 3638fd1498Szrj HIST_TYPE_INDIR_CALL_TOPN, /* Tries to identify the top N most frequently 3738fd1498Szrj called functions in indirect call. */ 3838fd1498Szrj HIST_TYPE_MAX 3938fd1498Szrj }; 4038fd1498Szrj 4138fd1498Szrj #define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER) 4238fd1498Szrj #define HIST_TYPE_FOR_COUNTER(COUNTER) \ 4338fd1498Szrj ((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER)) 4438fd1498Szrj 4538fd1498Szrj 4638fd1498Szrj /* The value to measure. */ 4738fd1498Szrj struct histogram_value_t 4838fd1498Szrj { 4938fd1498Szrj struct 5038fd1498Szrj { 5138fd1498Szrj tree value; /* The value to profile. */ 5238fd1498Szrj gimple *stmt; /* Insn containing the value. */ 5338fd1498Szrj gcov_type *counters; /* Pointer to first counter. */ 5438fd1498Szrj struct histogram_value_t *next; /* Linked list pointer. */ 5538fd1498Szrj } hvalue; 5638fd1498Szrj enum hist_type type; /* Type of information to measure. */ 5738fd1498Szrj unsigned n_counters; /* Number of required counters. */ 5838fd1498Szrj struct function *fun; 5938fd1498Szrj union 6038fd1498Szrj { 6138fd1498Szrj struct 6238fd1498Szrj { 6338fd1498Szrj int int_start; /* First value in interval. */ 6438fd1498Szrj unsigned int steps; /* Number of values in it. */ 6538fd1498Szrj } intvl; /* Interval histogram data. */ 6638fd1498Szrj } hdata; /* Profiled information specific data. */ 6738fd1498Szrj }; 6838fd1498Szrj 6938fd1498Szrj typedef struct histogram_value_t *histogram_value; 7038fd1498Szrj typedef const struct histogram_value_t *const_histogram_value; 7138fd1498Szrj 7238fd1498Szrj 7338fd1498Szrj typedef vec<histogram_value> histogram_values; 7438fd1498Szrj 7538fd1498Szrj extern void gimple_find_values_to_profile (histogram_values *); 7638fd1498Szrj extern bool gimple_value_profile_transformations (void); 7738fd1498Szrj 7838fd1498Szrj histogram_value gimple_alloc_histogram_value (struct function *, enum hist_type, 7938fd1498Szrj gimple *stmt, tree); 8038fd1498Szrj histogram_value gimple_histogram_value (struct function *, gimple *); 8138fd1498Szrj histogram_value gimple_histogram_value_of_type (struct function *, gimple *, 8238fd1498Szrj enum hist_type); 8338fd1498Szrj void gimple_add_histogram_value (struct function *, gimple *, histogram_value); 8438fd1498Szrj void dump_histograms_for_stmt (struct function *, FILE *, gimple *); 8538fd1498Szrj void gimple_remove_histogram_value (struct function *, gimple *, histogram_value); 8638fd1498Szrj void gimple_remove_stmt_histograms (struct function *, gimple *); 8738fd1498Szrj void gimple_duplicate_stmt_histograms (struct function *, gimple *, 8838fd1498Szrj struct function *, gimple *); 8938fd1498Szrj void gimple_move_stmt_histograms (struct function *, gimple *, gimple *); 9038fd1498Szrj void verify_histograms (void); 9138fd1498Szrj void free_histograms (function *); 9238fd1498Szrj void stringop_block_profile (gimple *, unsigned int *, HOST_WIDE_INT *); 9338fd1498Szrj gcall *gimple_ic (gcall *, struct cgraph_node *, profile_probability); 9438fd1498Szrj bool check_ic_target (gcall *, struct cgraph_node *); 9538fd1498Szrj 9638fd1498Szrj 9738fd1498Szrj /* In tree-profile.c. */ 9838fd1498Szrj extern void gimple_init_gcov_profiler (void); 9938fd1498Szrj extern void gimple_gen_edge_profiler (int, edge); 10038fd1498Szrj extern void gimple_gen_interval_profiler (histogram_value, unsigned, unsigned); 10138fd1498Szrj extern void gimple_gen_pow2_profiler (histogram_value, unsigned, unsigned); 10238fd1498Szrj extern void gimple_gen_one_value_profiler (histogram_value, unsigned, unsigned); 10338fd1498Szrj extern void gimple_gen_ic_profiler (histogram_value, unsigned, unsigned); 10438fd1498Szrj extern void gimple_gen_ic_func_profiler (void); 10538fd1498Szrj extern void gimple_gen_time_profiler (unsigned, unsigned); 10638fd1498Szrj extern void gimple_gen_average_profiler (histogram_value, unsigned, unsigned); 10738fd1498Szrj extern void gimple_gen_ior_profiler (histogram_value, unsigned, unsigned); 10838fd1498Szrj extern void stream_out_histogram_value (struct output_block *, histogram_value); 10938fd1498Szrj extern void stream_in_histogram_value (struct lto_input_block *, gimple *); 11038fd1498Szrj extern struct cgraph_node* find_func_by_profile_id (int func_id); 11138fd1498Szrj 11238fd1498Szrj 11338fd1498Szrj /* In profile.c. */ 11438fd1498Szrj extern void init_branch_prob (void); 115*58e805e6Szrj extern void branch_prob (bool); 116*58e805e6Szrj extern void read_thunk_profile (struct cgraph_node *); 11738fd1498Szrj extern void end_branch_prob (void); 11838fd1498Szrj 11938fd1498Szrj #endif /* GCC_VALUE_PROF_H */ 12038fd1498Szrj 121