/* Definitions for transformations based on profile information for values.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2007, 2008 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+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
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_CONST_DELTA /* Tries to identify the (almost) always constant
+ HIST_TYPE_CONST_DELTA, /* Tries to identify the (almost) always constant
difference between two evaluations of a value. */
+ 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. */
};
#define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER)
((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER))
/* The value to measure. */
-/* The void *'s are either rtx or tree, depending on which IR is in use. */
-struct histogram_value_t GTY(())
+struct histogram_value_t
{
- PTR GTY ((skip (""))) value; /* The value to profile. */
- enum machine_mode mode; /* And its mode. */
- PTR GTY ((skip (""))) seq; /* Insns required to count the
- profiled value. */
- PTR GTY ((skip (""))) insn; /* Insn before that to measure. */
+ 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. */
union
struct
{
int int_start; /* First value in interval. */
- int steps; /* Number of values in it. */
- int may_be_less; /* May the value be below? */
- int may_be_more; /* Or above. */
+ unsigned int steps; /* Number of values in it. */
} intvl; /* Interval histogram data. */
- struct
- {
- int may_be_other; /* If the value may be non-positive or not 2^k. */
- } pow2; /* Power of 2 histogram data. */
} hdata; /* Profiled information specific data. */
};
typedef struct histogram_value_t *histogram_value;
+typedef const struct histogram_value_t *const_histogram_value;
-DEF_VEC_GC_P(histogram_value);
+DEF_VEC_P(histogram_value);
+DEF_VEC_ALLOC_P(histogram_value,heap);
-typedef VEC(histogram_value) *histogram_values;
+typedef VEC(histogram_value,heap) *histogram_values;
/* Hooks registration. */
-extern void rtl_register_value_prof_hooks (void);
-extern void tree_register_value_prof_hooks (void);
+extern void gimple_register_value_prof_hooks (void);
/* IR-independent entry points. */
extern void find_values_to_profile (histogram_values *);
\f
/* External declarations for edge-based profiling. */
struct profile_hooks {
+
+ /* Insert code to initialize edge profiler. */
+ void (*init_edge_profiler) (void);
+
/* Insert code to increment an edge count. */
void (*gen_edge_profiler) (int, edge);
/* Insert code to find the most common value of a difference between two
evaluations of an expression. */
void (*gen_const_delta_profiler) (histogram_value, unsigned, unsigned);
- FILE * (*profile_dump_file) (void);
+
+ /* Insert code to find the most common indirect call */
+ void (*gen_ic_profiler) (histogram_value, unsigned, unsigned);
+
+ /* Insert code to find the average value of an expression. */
+ void (*gen_average_profiler) (histogram_value, unsigned, unsigned);
+
+ /* Insert code to ior value of an expression. */
+ void (*gen_ior_profiler) (histogram_value, unsigned, unsigned);
};
+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 (void);
+void stringop_block_profile (gimple, unsigned int *, HOST_WIDE_INT *);
+
/* In profile.c. */
extern void init_branch_prob (void);
extern void branch_prob (void);
extern void end_branch_prob (void);
extern void tree_register_profile_hooks (void);
-extern void rtl_register_profile_hooks (void);
/* In tree-profile.c. */
extern struct profile_hooks tree_profile_hooks;
-/* In rtl-profile.c. */
-extern struct profile_hooks rtl_profile_hooks;
-
#endif /* GCC_VALUE_PROF_H */
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