121 lines
4.8 KiB
C
121 lines
4.8 KiB
C
/* Definitions for transformations based on profile information for values.
|
||
Copyright (C) 2003-2017 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_SINGLE_VALUE, /* Tries to identify the value that is (almost)
|
||
always constant. */
|
||
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_INDIR_CALL_TOPN, /* Tries to identify the top N most frequently
|
||
called functions in indirect call. */
|
||
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, 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 *, int, gcov_type,
|
||
gcov_type);
|
||
bool check_ic_target (gcall *, struct cgraph_node *);
|
||
|
||
|
||
/* 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, unsigned);
|
||
extern void gimple_gen_pow2_profiler (histogram_value, unsigned, unsigned);
|
||
extern void gimple_gen_one_value_profiler (histogram_value, unsigned, unsigned);
|
||
extern void gimple_gen_ic_profiler (histogram_value, unsigned, unsigned);
|
||
extern void gimple_gen_ic_func_profiler (void);
|
||
extern void gimple_gen_time_profiler (unsigned, unsigned);
|
||
extern void gimple_gen_average_profiler (histogram_value, unsigned, unsigned);
|
||
extern void gimple_gen_ior_profiler (histogram_value, unsigned, unsigned);
|
||
extern void stream_out_histogram_value (struct output_block *, histogram_value);
|
||
extern void stream_in_histogram_value (struct 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 (void);
|
||
extern void end_branch_prob (void);
|
||
|
||
#endif /* GCC_VALUE_PROF_H */
|
||
|