Fix documentation typos.

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-propagate.h

diff --git a/gcc/tree-ssa-propagate.h b/gcc/tree-ssa-propagate.h
index dac9a5e..e8f4f03 100644 (file)
--- a/gcc/tree-ssa-propagate.h
+++ b/gcc/tree-ssa-propagate.h
@@ -1,13 +1,13 @@
 /* Data structures and function declarations for the SSA value propagation
    engine.
 /* Data structures and function declarations for the SSA value propagation
    engine.

-   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.

    Contributed by Diego Novillo <dnovillo@redhat.com>
 
 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
    Contributed by Diego Novillo <dnovillo@redhat.com>
 
 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)
+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,
 any later version.
 
 GCC is distributed in the hope that it will be useful,


@@ -16,16 +16,27 @@ 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
 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 COPYING.  If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 #ifndef _TREE_SSA_PROPAGATE_H
 #define _TREE_SSA_PROPAGATE_H 1
 
 
 #ifndef _TREE_SSA_PROPAGATE_H
 #define _TREE_SSA_PROPAGATE_H 1
 

-/* Use the TREE_VISITED bitflag to mark statements and PHI nodes that
-   have been deemed varying and should not be simulated again.  */
-#define DONT_SIMULATE_AGAIN(T) TREE_VISITED (T)
+/* If SIM_P is true, statement S will be simulated again.  */
+
+static inline void
+prop_set_simulate_again (gimple s, bool visit_p)
+{
+  gimple_set_visited (s, visit_p);
+}
+
+/* Return true if statement T should be simulated again.  */
+
+static inline bool
+prop_simulate_again_p (gimple s)
+{
+  return gimple_visited_p (s);
+}

 
 /* Lattice values used for propagation purposes.  Specific instances
    of a propagation engine must return these values from the statement
 
 /* Lattice values used for propagation purposes.  Specific instances
    of a propagation engine must return these values from the statement


@@ -58,16 +69,6 @@ struct prop_value_d {
 
     /* Propagated value.  */
     tree value;
 
     /* Propagated value.  */
     tree value;

-
-    /* If this value is held in an SSA name for a non-register
-       variable, this field holds the actual memory reference
-       associated with this value.  This field is taken from 
-       the LHS of the assignment that generated the associated SSA
-       name.  However, in the case of PHI nodes, this field is copied
-       from the PHI arguments (assuming that all the arguments have
-       the same memory reference).  See replace_vuses_in for a more
-       detailed description.  */
-    tree mem_ref;

 };
 
 typedef struct prop_value_d prop_value_t;
 };
 
 typedef struct prop_value_d prop_value_t;


@@ -107,19 +108,18 @@ typedef struct value_range_d value_range_t;
 
 
 /* Call-back functions used by the value propagation engine.  */
 
 
 /* Call-back functions used by the value propagation engine.  */

-typedef enum ssa_prop_result (*ssa_prop_visit_stmt_fn) (tree, edge *, tree *);
-typedef enum ssa_prop_result (*ssa_prop_visit_phi_fn) (tree);
+typedef enum ssa_prop_result (*ssa_prop_visit_stmt_fn) (gimple, edge *, tree *);
+typedef enum ssa_prop_result (*ssa_prop_visit_phi_fn) (gimple);
+typedef bool (*ssa_prop_fold_stmt_fn) (gimple_stmt_iterator *gsi);

 
 
 /* In tree-ssa-propagate.c  */
 void ssa_propagate (ssa_prop_visit_stmt_fn, ssa_prop_visit_phi_fn);
 
 
 /* In tree-ssa-propagate.c  */
 void ssa_propagate (ssa_prop_visit_stmt_fn, ssa_prop_visit_phi_fn);

-tree get_rhs (tree);
-bool set_rhs (tree *, tree);
-tree first_vdef (tree);
-bool stmt_makes_single_load (tree);
-bool stmt_makes_single_store (tree);
-prop_value_t *get_value_loaded_by (tree, prop_value_t *);
-bool replace_uses_in (tree, bool *, prop_value_t *);
-void substitute_and_fold (prop_value_t *, bool);
+bool valid_gimple_rhs_p (tree);
+bool valid_gimple_call_p (tree);
+void move_ssa_defining_stmt_for_defs (gimple, gimple);
+bool update_call_from_tree (gimple_stmt_iterator *, tree);
+bool stmt_makes_single_store (gimple);
+bool substitute_and_fold (prop_value_t *, ssa_prop_fold_stmt_fn);

 
 #endif /* _TREE_SSA_PROPAGATE_H  */
 
 #endif /* _TREE_SSA_PROPAGATE_H  */