1240616Sjimharris/* Definitions for transformations based on profile information for values. 2253112Sjimharris Copyright (C) 2003-2020 Free Software Foundation, Inc. 3240616Sjimharris 4240616SjimharrisThis file is part of GCC. 5240616Sjimharris 6240616SjimharrisGCC is free software; you can redistribute it and/or modify it under 7240616Sjimharristhe terms of the GNU General Public License as published by the Free 8240616SjimharrisSoftware Foundation; either version 3, or (at your option) any later 9240616Sjimharrisversion. 10240616Sjimharris 11240616SjimharrisGCC is distributed in the hope that it will be useful, but WITHOUT ANY 12240616SjimharrisWARRANTY; without even the implied warranty of MERCHANTABILITY or 13240616SjimharrisFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14240616Sjimharrisfor more details. 15240616Sjimharris 16240616SjimharrisYou should have received a copy of the GNU General Public License 17240616Sjimharrisalong with GCC; see the file COPYING3. If not see 18240616Sjimharris<http://www.gnu.org/licenses/>. */ 19240616Sjimharris 20240616Sjimharris#ifndef GCC_VALUE_PROF_H 21240616Sjimharris#define GCC_VALUE_PROF_H 22240616Sjimharris 23240616Sjimharris/* Supported histogram types. */ 24240616Sjimharrisenum hist_type 25240616Sjimharris{ 26240616Sjimharris HIST_TYPE_INTERVAL, /* Measures histogram of values inside a specified 27240616Sjimharris interval. */ 28240616Sjimharris HIST_TYPE_POW2, /* Histogram of power of 2 values. */ 29240616Sjimharris HIST_TYPE_TOPN_VALUES, /* Tries to identify the N most common values. */ 30240616Sjimharris HIST_TYPE_INDIR_CALL, /* Tries to identify the function that is (almost) 31240616Sjimharris called in indirect call */ 32240616Sjimharris HIST_TYPE_AVERAGE, /* Compute average value (sum of all values). */ 33240616Sjimharris HIST_TYPE_IOR, /* Used to compute expected alignment. */ 34240616Sjimharris HIST_TYPE_TIME_PROFILE, /* Used for time profile */ 35240616Sjimharris HIST_TYPE_MAX 36240616Sjimharris}; 37240616Sjimharris 38240616Sjimharris#define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER) 39240616Sjimharris#define HIST_TYPE_FOR_COUNTER(COUNTER) \ 40240616Sjimharris ((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER)) 41240616Sjimharris 42240616Sjimharris 43240616Sjimharris/* The value to measure. */ 44240616Sjimharrisstruct histogram_value_t 45240616Sjimharris{ 46240616Sjimharris struct 47240616Sjimharris { 48240616Sjimharris tree value; /* The value to profile. */ 49240616Sjimharris gimple *stmt; /* Insn containing the value. */ 50240616Sjimharris gcov_type *counters; /* Pointer to first counter. */ 51240616Sjimharris struct histogram_value_t *next; /* Linked list pointer. */ 52240616Sjimharris } hvalue; 53240616Sjimharris enum hist_type type; /* Type of information to measure. */ 54240616Sjimharris unsigned n_counters; /* Number of required counters. */ 55240616Sjimharris struct function *fun; 56256152Sjimharris union 57240616Sjimharris { 58240616Sjimharris struct 59240616Sjimharris { 60240616Sjimharris int int_start; /* First value in interval. */ 61240616Sjimharris unsigned int steps; /* Number of values in it. */ 62240616Sjimharris } intvl; /* Interval histogram data. */ 63240616Sjimharris } hdata; /* Profiled information specific data. */ 64240616Sjimharris}; 65240616Sjimharris 66240616Sjimharristypedef struct histogram_value_t *histogram_value; 67240616Sjimharristypedef const struct histogram_value_t *const_histogram_value; 68240616Sjimharris 69256152Sjimharris 70240616Sjimharristypedef vec<histogram_value> histogram_values; 71240616Sjimharris 72240616Sjimharrisextern void gimple_find_values_to_profile (histogram_values *); 73240616Sjimharrisextern bool gimple_value_profile_transformations (void); 74240616Sjimharris 75240616Sjimharrishistogram_value gimple_alloc_histogram_value (struct function *, enum hist_type, 76240616Sjimharris gimple *stmt = NULL, 77240616Sjimharris tree value = NULL_TREE); 78240616Sjimharrishistogram_value gimple_histogram_value (struct function *, gimple *); 79240616Sjimharrishistogram_value gimple_histogram_value_of_type (struct function *, gimple *, 80240616Sjimharris enum hist_type); 81240616Sjimharrisvoid gimple_add_histogram_value (struct function *, gimple *, histogram_value); 82240616Sjimharrisvoid dump_histograms_for_stmt (struct function *, FILE *, gimple *); 83240616Sjimharrisvoid gimple_remove_histogram_value (struct function *, gimple *, histogram_value); 84240616Sjimharrisvoid gimple_remove_stmt_histograms (struct function *, gimple *); 85240616Sjimharrisvoid gimple_duplicate_stmt_histograms (struct function *, gimple *, 86240616Sjimharris struct function *, gimple *); 87240616Sjimharrisvoid gimple_move_stmt_histograms (struct function *, gimple *, gimple *); 88240616Sjimharrisvoid verify_histograms (void); 89240616Sjimharrisvoid free_histograms (function *); 90240616Sjimharrisvoid stringop_block_profile (gimple *, unsigned int *, HOST_WIDE_INT *); 91240616Sjimharrisgcall *gimple_ic (gcall *, struct cgraph_node *, profile_probability); 92240616Sjimharrisbool get_nth_most_common_value (gimple *stmt, const char *counter_type, 93256152Sjimharris histogram_value hist, gcov_type *value, 94256152Sjimharris gcov_type *count, gcov_type *all, 95240616Sjimharris unsigned n = 0); 96240616Sjimharris 97240616Sjimharris/* In tree-profile.c. */ 98240616Sjimharrisextern void gimple_init_gcov_profiler (void); 99248770Sjimharrisextern void gimple_gen_edge_profiler (int, edge); 100240616Sjimharrisextern void gimple_gen_interval_profiler (histogram_value, unsigned); 101240616Sjimharrisextern void gimple_gen_pow2_profiler (histogram_value, unsigned); 102240616Sjimharrisextern void gimple_gen_topn_values_profiler (histogram_value, unsigned); 103240616Sjimharrisextern void gimple_gen_ic_profiler (histogram_value, unsigned); 104240616Sjimharrisextern void gimple_gen_ic_func_profiler (void); 105240616Sjimharrisextern void gimple_gen_time_profiler (unsigned); 106240616Sjimharrisextern void gimple_gen_average_profiler (histogram_value, unsigned); 107240616Sjimharrisextern void gimple_gen_ior_profiler (histogram_value, unsigned); 108240616Sjimharrisextern void stream_out_histogram_value (struct output_block *, histogram_value); 109240616Sjimharrisextern void stream_in_histogram_value (class lto_input_block *, gimple *); 110240616Sjimharrisextern struct cgraph_node* find_func_by_profile_id (int func_id); 111240616Sjimharris 112240616Sjimharris 113240616Sjimharris/* In profile.c. */ 114240616Sjimharrisextern void init_branch_prob (void); 115240616Sjimharrisextern void branch_prob (bool); 116240616Sjimharrisextern void read_thunk_profile (struct cgraph_node *); 117240616Sjimharrisextern void end_branch_prob (void); 118240616Sjimharris 119240616Sjimharris#endif /* GCC_VALUE_PROF_H */ 120240616Sjimharris 121240616Sjimharris