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diff --git a/gcc/value-prof.h b/gcc/value-prof.h
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+/* Definitions for transformations based on profile information for values.
+   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 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_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)
+#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.  */
+  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;
+
+DEF_VEC_P(histogram_value);
+DEF_VEC_ALLOC_P(histogram_value,heap);
+
+typedef VEC(histogram_value,heap) *histogram_values;
+
+/* Hooks registration.  */
+extern void gimple_register_value_prof_hooks (void);
+
+/* IR-independent entry points.  */
+extern void find_values_to_profile (histogram_values *);
+extern bool value_profile_transformations (void);
+
+/* 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 increment the interval histogram counter.  */
+  void (*gen_interval_profiler) (histogram_value, unsigned, unsigned);
+
+  /* Insert code to increment the power of two histogram counter.  */
+  void (*gen_pow2_profiler) (histogram_value, unsigned, unsigned);
+
+  /* Insert code to find the most common value.  */
+  void (*gen_one_value_profiler) (histogram_value, unsigned, unsigned);
+
+  /* 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);
+
+  /* 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);
+
+/* In tree-profile.c.  */
+extern struct profile_hooks tree_profile_hooks;
+
+#endif	/* GCC_VALUE_PROF_H */
+