OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [value-prof.h] - Blame information for rev 280

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 280 jeremybenn
/* Definitions for transformations based on profile information for values.
2
   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
3
 
4
This file is part of GCC.
5
 
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
9
version.
10
 
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
14
for more details.
15
 
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/>.  */
19
 
20
#ifndef GCC_VALUE_PROF_H
21
#define GCC_VALUE_PROF_H
22
 
23
/* Supported histogram types.  */
24
enum hist_type
25
{
26
  HIST_TYPE_INTERVAL,   /* Measures histogram of values inside a specified
27
                           interval.  */
28
  HIST_TYPE_POW2,       /* Histogram of power of 2 values.  */
29
  HIST_TYPE_SINGLE_VALUE, /* Tries to identify the value that is (almost)
30
                           always constant.  */
31
  HIST_TYPE_CONST_DELTA, /* Tries to identify the (almost) always constant
32
                           difference between two evaluations of a value.  */
33
  HIST_TYPE_INDIR_CALL,   /* Tries to identify the function that is (almost)
34
                            called in indirect call */
35
  HIST_TYPE_AVERAGE,    /* Compute average value (sum of all values).  */
36
  HIST_TYPE_IOR         /* Used to compute expected alignment.  */
37
};
38
 
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))
42
 
43
/* The value to measure.  */
44
struct histogram_value_t
45
{
46
  struct
47
    {
48
      tree value;               /* The value to profile.  */
49
      gimple stmt;              /* Insn containing the value.  */
50
      gcov_type *counters;                      /* Pointer to first counter.  */
51
      struct histogram_value_t *next;           /* Linked list pointer.  */
52
    } hvalue;
53
  enum hist_type type;                  /* Type of information to measure.  */
54
  unsigned n_counters;                  /* Number of required counters.  */
55
  union
56
    {
57
      struct
58
        {
59
          int int_start;        /* First value in interval.  */
60
          unsigned int steps;   /* Number of values in it.  */
61
        } intvl;        /* Interval histogram data.  */
62
    } hdata;            /* Profiled information specific data.  */
63
};
64
 
65
typedef struct histogram_value_t *histogram_value;
66
typedef const struct histogram_value_t *const_histogram_value;
67
 
68
DEF_VEC_P(histogram_value);
69
DEF_VEC_ALLOC_P(histogram_value,heap);
70
 
71
typedef VEC(histogram_value,heap) *histogram_values;
72
 
73
/* Hooks registration.  */
74
extern void gimple_register_value_prof_hooks (void);
75
 
76
/* IR-independent entry points.  */
77
extern void find_values_to_profile (histogram_values *);
78
extern bool value_profile_transformations (void);
79
 
80
/* External declarations for edge-based profiling.  */
81
struct profile_hooks {
82
 
83
  /* Insert code to initialize edge profiler.  */
84
  void (*init_edge_profiler) (void);
85
 
86
  /* Insert code to increment an edge count.  */
87
  void (*gen_edge_profiler) (int, edge);
88
 
89
  /* Insert code to increment the interval histogram counter.  */
90
  void (*gen_interval_profiler) (histogram_value, unsigned, unsigned);
91
 
92
  /* Insert code to increment the power of two histogram counter.  */
93
  void (*gen_pow2_profiler) (histogram_value, unsigned, unsigned);
94
 
95
  /* Insert code to find the most common value.  */
96
  void (*gen_one_value_profiler) (histogram_value, unsigned, unsigned);
97
 
98
  /* Insert code to find the most common value of a difference between two
99
     evaluations of an expression.  */
100
  void (*gen_const_delta_profiler) (histogram_value, unsigned, unsigned);
101
 
102
  /* Insert code to find the most common indirect call */
103
  void (*gen_ic_profiler) (histogram_value, unsigned, unsigned);
104
 
105
  /* Insert code to find the average value of an expression.  */
106
  void (*gen_average_profiler) (histogram_value, unsigned, unsigned);
107
 
108
  /* Insert code to ior value of an expression.  */
109
  void (*gen_ior_profiler) (histogram_value, unsigned, unsigned);
110
};
111
 
112
histogram_value gimple_histogram_value (struct function *, gimple);
113
histogram_value gimple_histogram_value_of_type (struct function *, gimple,
114
                                                enum hist_type);
115
void gimple_add_histogram_value (struct function *, gimple, histogram_value);
116
void dump_histograms_for_stmt (struct function *, FILE *, gimple);
117
void gimple_remove_histogram_value (struct function *, gimple, histogram_value);
118
void gimple_remove_stmt_histograms (struct function *, gimple);
119
void gimple_duplicate_stmt_histograms (struct function *, gimple,
120
                                       struct function *, gimple);
121
void gimple_move_stmt_histograms (struct function *, gimple, gimple);
122
void verify_histograms (void);
123
void free_histograms (void);
124
void stringop_block_profile (gimple, unsigned int *, HOST_WIDE_INT *);
125
 
126
/* In profile.c.  */
127
extern void init_branch_prob (void);
128
extern void branch_prob (void);
129
extern void end_branch_prob (void);
130
extern void tree_register_profile_hooks (void);
131
 
132
/* In tree-profile.c.  */
133
extern struct profile_hooks tree_profile_hooks;
134
 
135
#endif  /* GCC_VALUE_PROF_H */
136
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.