f30278e8b4
* bitmap.c, bitmap.h, builtin-attrs.def, cfglayout.h, collect2.h, conflict.c, coretypes.h, coverage.h, errors.h, gcc.h, gcov-dump.c, gen-protos.c, gencheck.c, gencodes.c, genconstants.c, gengenrtl.c, genmodes.c, genpeep.c, gensupport.h, graph.h, gthr-gnat.c, gthr-gnat.h, gthr-posix.c, gthr-posix.h, hard-reg-set.h, hwint.h, integrate.h, libgcc2.c, lists.c, machmode.def, mips-tdump.c, opts.h, params.c, predict.def, predict.h, protoize.c, reload.h, resource.h, rtl-error.c, sbitmap.c, sbitmap.h, sreal.c, tlink.c, tree-dump.h, tree-inline.h, unwind-dw2-fde.c, unwind-dw2.c, unwind-sjlj.c, value-prof.h: Update copyright. From-SVN: r89097
115 lines
4 KiB
C
115 lines
4 KiB
C
/* Definitions for transformations based on profile information for values.
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_VALUE_PROF_H
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#define GCC_VALUE_PROF_H
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/* Supported histogram types. */
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enum hist_type
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{
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HIST_TYPE_INTERVAL, /* Measures histogram of values inside a specified
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interval. */
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HIST_TYPE_POW2, /* Histogram of power of 2 values. */
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HIST_TYPE_SINGLE_VALUE, /* Tries to identify the value that is (almost)
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always constant. */
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HIST_TYPE_CONST_DELTA /* Tries to identify the (almost) always constant
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difference between two evaluations of a value. */
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};
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#define COUNTER_FOR_HIST_TYPE(TYPE) ((int) (TYPE) + GCOV_FIRST_VALUE_COUNTER)
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#define HIST_TYPE_FOR_COUNTER(COUNTER) \
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((enum hist_type) ((COUNTER) - GCOV_FIRST_VALUE_COUNTER))
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/* The value to measure. */
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/* The void *'s are either rtx or tree, depending on which IR is in use. */
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struct histogram_value_t GTY(())
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{
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PTR GTY ((skip (""))) value; /* The value to profile. */
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enum machine_mode mode; /* And its mode. */
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PTR GTY ((skip (""))) seq; /* Insns required to count the
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profiled value. */
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PTR GTY ((skip (""))) insn; /* Insn before that to measure. */
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enum hist_type type; /* Type of information to measure. */
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unsigned n_counters; /* Number of required counters. */
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union
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{
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struct
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{
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int int_start; /* First value in interval. */
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int steps; /* Number of values in it. */
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int may_be_less; /* May the value be below? */
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int may_be_more; /* Or above. */
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} intvl; /* Interval histogram data. */
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struct
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{
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int may_be_other; /* If the value may be non-positive or not 2^k. */
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} pow2; /* Power of 2 histogram data. */
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} hdata; /* Profiled information specific data. */
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};
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typedef struct histogram_value_t *histogram_value;
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DEF_VEC_GC_P(histogram_value);
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typedef VEC(histogram_value) *histogram_values;
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/* Hooks registration. */
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extern void rtl_register_value_prof_hooks (void);
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extern void tree_register_value_prof_hooks (void);
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/* IR-independent entry points. */
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extern void find_values_to_profile (histogram_values *);
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extern bool value_profile_transformations (void);
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/* External declarations for edge-based profiling. */
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struct profile_hooks {
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/* Insert code to increment an edge count. */
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void (*gen_edge_profiler) (int, edge);
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/* Insert code to increment the interval histogram counter. */
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void (*gen_interval_profiler) (histogram_value, unsigned, unsigned);
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/* Insert code to increment the power of two histogram counter. */
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void (*gen_pow2_profiler) (histogram_value, unsigned, unsigned);
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/* Insert code to find the most common value. */
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void (*gen_one_value_profiler) (histogram_value, unsigned, unsigned);
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/* Insert code to find the most common value of a difference between two
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evaluations of an expression. */
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void (*gen_const_delta_profiler) (histogram_value, unsigned, unsigned);
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FILE * (*profile_dump_file) (void);
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};
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/* In profile.c. */
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extern void init_branch_prob (void);
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extern void branch_prob (void);
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extern void end_branch_prob (void);
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extern void tree_register_profile_hooks (void);
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extern void rtl_register_profile_hooks (void);
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/* In tree-profile.c. */
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extern struct profile_hooks tree_profile_hooks;
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/* In rtl-profile.c. */
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extern struct profile_hooks rtl_profile_hooks;
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#endif /* GCC_VALUE_PROF_H */
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