| /* Definitions for transformations based on profile information for values. |
| Copyright (C) 2003-2021 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_VALUE_PROF_H |
| #define GCC_VALUE_PROF_H |
| |
| /* Supported histogram types. */ |
| enum hist_type |
| { |
| HIST_TYPE_INTERVAL, /* Measures histogram of values inside a specified |
| interval. */ |
| HIST_TYPE_POW2, /* Histogram of power of 2 values. */ |
| HIST_TYPE_TOPN_VALUES, /* Tries to identify the N most common values. */ |
| HIST_TYPE_INDIR_CALL, /* Tries to identify the function that is (almost) |
| called in indirect call */ |
| HIST_TYPE_AVERAGE, /* Compute average value (sum of all values). */ |
| HIST_TYPE_IOR, /* Used to compute expected alignment. */ |
| HIST_TYPE_TIME_PROFILE, /* Used for time profile */ |
| HIST_TYPE_MAX |
| }; |
| |
| #define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER) |
| #define HIST_TYPE_FOR_COUNTER(COUNTER) \ |
| ((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER)) |
| |
| |
| /* The value to measure. */ |
| struct histogram_value_t |
| { |
| struct |
| { |
| tree value; /* The value to profile. */ |
| gimple *stmt; /* Insn containing the value. */ |
| gcov_type *counters; /* Pointer to first counter. */ |
| struct histogram_value_t *next; /* Linked list pointer. */ |
| } hvalue; |
| enum hist_type type; /* Type of information to measure. */ |
| unsigned n_counters; /* Number of required counters. */ |
| struct function *fun; |
| union |
| { |
| struct |
| { |
| int int_start; /* First value in interval. */ |
| unsigned int steps; /* Number of values in it. */ |
| } intvl; /* Interval histogram data. */ |
| } hdata; /* Profiled information specific data. */ |
| }; |
| |
| typedef struct histogram_value_t *histogram_value; |
| typedef const struct histogram_value_t *const_histogram_value; |
| |
| |
| typedef vec<histogram_value> histogram_values; |
| |
| extern void gimple_find_values_to_profile (histogram_values *); |
| extern bool gimple_value_profile_transformations (void); |
| |
| histogram_value gimple_alloc_histogram_value (struct function *, enum hist_type, |
| gimple *stmt = NULL, |
| tree value = NULL_TREE); |
| histogram_value gimple_histogram_value (struct function *, gimple *); |
| histogram_value gimple_histogram_value_of_type (struct function *, gimple *, |
| enum hist_type); |
| void gimple_add_histogram_value (struct function *, gimple *, histogram_value); |
| void dump_histograms_for_stmt (struct function *, FILE *, gimple *); |
| void gimple_remove_histogram_value (struct function *, gimple *, histogram_value); |
| void gimple_remove_stmt_histograms (struct function *, gimple *); |
| void gimple_duplicate_stmt_histograms (struct function *, gimple *, |
| struct function *, gimple *); |
| void gimple_move_stmt_histograms (struct function *, gimple *, gimple *); |
| void verify_histograms (void); |
| void free_histograms (function *); |
| void stringop_block_profile (gimple *, unsigned int *, HOST_WIDE_INT *); |
| gcall *gimple_ic (gcall *, struct cgraph_node *, profile_probability); |
| bool get_nth_most_common_value (gimple *stmt, const char *counter_type, |
| histogram_value hist, gcov_type *value, |
| gcov_type *count, gcov_type *all, |
| unsigned n = 0); |
| |
| /* In tree-profile.c. */ |
| extern void gimple_init_gcov_profiler (void); |
| extern void gimple_gen_edge_profiler (int, edge); |
| extern void gimple_gen_interval_profiler (histogram_value, unsigned); |
| extern void gimple_gen_pow2_profiler (histogram_value, unsigned); |
| extern void gimple_gen_topn_values_profiler (histogram_value, unsigned); |
| extern void gimple_gen_ic_profiler (histogram_value, unsigned); |
| extern void gimple_gen_ic_func_profiler (void); |
| extern void gimple_gen_time_profiler (unsigned); |
| extern void gimple_gen_average_profiler (histogram_value, unsigned); |
| extern void gimple_gen_ior_profiler (histogram_value, unsigned); |
| extern void stream_out_histogram_value (struct output_block *, histogram_value); |
| extern void stream_in_histogram_value (class lto_input_block *, gimple *); |
| extern struct cgraph_node* find_func_by_profile_id (int func_id); |
| |
| |
| /* In profile.c. */ |
| extern void init_branch_prob (void); |
| extern void branch_prob (bool); |
| extern void read_thunk_profile (struct cgraph_node *); |
| extern void end_branch_prob (void); |
| |
| #endif /* GCC_VALUE_PROF_H */ |
| |