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1 /* Definitions for transformations based on profile information for values.
2 Copyright (C) 2003-2019 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
20 #ifndef GCC_VALUE_PROF_H
21 #define GCC_VALUE_PROF_H
23 /* Supported histogram types. */
26 HIST_TYPE_INTERVAL
, /* Measures histogram of values inside a specified
28 HIST_TYPE_POW2
, /* Histogram of power of 2 values. */
29 HIST_TYPE_SINGLE_VALUE
, /* Tries to identify the value that is (almost)
31 HIST_TYPE_INDIR_CALL
, /* Tries to identify the function that is (almost)
32 called in indirect call */
33 HIST_TYPE_AVERAGE
, /* Compute average value (sum of all values). */
34 HIST_TYPE_IOR
, /* Used to compute expected alignment. */
35 HIST_TYPE_TIME_PROFILE
, /* Used for time profile */
39 #define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER)
40 #define HIST_TYPE_FOR_COUNTER(COUNTER) \
41 ((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER))
44 /* The value to measure. */
45 struct histogram_value_t
49 tree value
; /* The value to profile. */
50 gimple
*stmt
; /* Insn containing the value. */
51 gcov_type
*counters
; /* Pointer to first counter. */
52 struct histogram_value_t
*next
; /* Linked list pointer. */
54 enum hist_type type
; /* Type of information to measure. */
55 unsigned n_counters
; /* Number of required counters. */
61 int int_start
; /* First value in interval. */
62 unsigned int steps
; /* Number of values in it. */
63 } intvl
; /* Interval histogram data. */
64 } hdata
; /* Profiled information specific data. */
67 typedef struct histogram_value_t
*histogram_value
;
68 typedef const struct histogram_value_t
*const_histogram_value
;
71 typedef vec
<histogram_value
> histogram_values
;
73 extern void gimple_find_values_to_profile (histogram_values
*);
74 extern bool gimple_value_profile_transformations (void);
76 histogram_value
gimple_alloc_histogram_value (struct function
*, enum hist_type
,
78 histogram_value
gimple_histogram_value (struct function
*, gimple
*);
79 histogram_value
gimple_histogram_value_of_type (struct function
*, gimple
*,
81 void gimple_add_histogram_value (struct function
*, gimple
*, histogram_value
);
82 void dump_histograms_for_stmt (struct function
*, FILE *, gimple
*);
83 void gimple_remove_histogram_value (struct function
*, gimple
*, histogram_value
);
84 void gimple_remove_stmt_histograms (struct function
*, gimple
*);
85 void gimple_duplicate_stmt_histograms (struct function
*, gimple
*,
86 struct function
*, gimple
*);
87 void gimple_move_stmt_histograms (struct function
*, gimple
*, gimple
*);
88 void verify_histograms (void);
89 void free_histograms (function
*);
90 void stringop_block_profile (gimple
*, unsigned int *, HOST_WIDE_INT
*);
91 gcall
*gimple_ic (gcall
*, struct cgraph_node
*, profile_probability
);
92 bool check_ic_target (gcall
*, struct cgraph_node
*);
93 bool get_most_common_single_value (gimple
*stmt
, const char *counter_type
,
95 gcov_type
*value
, gcov_type
*count
,
99 /* In tree-profile.c. */
100 extern void gimple_init_gcov_profiler (void);
101 extern void gimple_gen_edge_profiler (int, edge
);
102 extern void gimple_gen_interval_profiler (histogram_value
, unsigned, unsigned);
103 extern void gimple_gen_pow2_profiler (histogram_value
, unsigned, unsigned);
104 extern void gimple_gen_one_value_profiler (histogram_value
, unsigned, unsigned);
105 extern void gimple_gen_ic_profiler (histogram_value
, unsigned, unsigned);
106 extern void gimple_gen_ic_func_profiler (void);
107 extern void gimple_gen_time_profiler (unsigned, unsigned);
108 extern void gimple_gen_average_profiler (histogram_value
, unsigned, unsigned);
109 extern void gimple_gen_ior_profiler (histogram_value
, unsigned, unsigned);
110 extern void stream_out_histogram_value (struct output_block
*, histogram_value
);
111 extern void stream_in_histogram_value (struct lto_input_block
*, gimple
*);
112 extern struct cgraph_node
* find_func_by_profile_id (int func_id
);
116 extern void init_branch_prob (void);
117 extern void branch_prob (bool);
118 extern void read_thunk_profile (struct cgraph_node
*);
119 extern void end_branch_prob (void);
121 #endif /* GCC_VALUE_PROF_H */