* gcc/doc/extended.texi: Replace the dash character with

[pf3gnuchains/gcc-fork.git] / gcc / cselib.h

diff --git a/gcc/cselib.h b/gcc/cselib.h
index 09c2006..433f4de 100644 (file)
--- a/gcc/cselib.h
+++ b/gcc/cselib.h
@@ -1,6 +1,6 @@
 /* Common subexpression elimination for GNU compiler.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   1999, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -19,8 +19,7 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 /* Describe a value.  */
-typedef struct cselib_val_struct GTY(())
-{
+typedef struct GTY(()) cselib_val_struct {
   /* The hash value.  */
   unsigned int value;
 
@@ -39,8 +38,7 @@ typedef struct cselib_val_struct GTY(())
 } cselib_val;
 
 /* A list of rtl expressions that hold the same value.  */
-struct elt_loc_list GTY(())
-{
+struct GTY(()) elt_loc_list {
   /* Next element in the list.  */
   struct elt_loc_list *next;
   /* An rtl expression that holds the value.  */
@@ -50,13 +48,23 @@ struct elt_loc_list GTY(())
 };
 
 /* A list of cselib_val structures.  */
-struct elt_list GTY(())
-{
+struct GTY(()) elt_list {
   struct elt_list *next;
   cselib_val *elt;
 };
 
+/* Describe a single set that is part of an insn.  */
+struct cselib_set
+{
+  rtx src;
+  rtx dest;
+  cselib_val *src_elt;
+  cselib_val *dest_addr_elt;
+};
+
 extern void (*cselib_discard_hook) (cselib_val *);
+extern void (*cselib_record_sets_hook) (rtx insn, struct cselib_set *sets,
+                                       int n_sets);
 
 extern cselib_val *cselib_lookup (rtx, enum machine_mode, int);
 extern void cselib_init (bool record_memory);
@@ -67,5 +75,16 @@ extern enum machine_mode cselib_reg_set_mode (const_rtx);
 extern int rtx_equal_for_cselib_p (rtx, rtx);
 extern int references_value_p (const_rtx, int);
 extern rtx cselib_expand_value_rtx (rtx, bitmap, int);
+typedef rtx (*cselib_expand_callback)(rtx, bitmap, int, void *);
+extern rtx cselib_expand_value_rtx_cb (rtx, bitmap, int,
+                                      cselib_expand_callback, void*);
 extern rtx cselib_subst_to_values (rtx);
 extern void cselib_invalidate_rtx (rtx);
+
+extern void cselib_reset_table_with_next_value (unsigned int);
+extern unsigned int cselib_get_next_unknown_value (void);
+extern void cselib_preserve_value (cselib_val *);
+extern bool cselib_preserved_value_p (cselib_val *);
+extern void cselib_preserve_only_values (bool);
+
+extern void dump_cselib_table (FILE *);