PR target/32335

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

diff --git a/gcc/cselib.h b/gcc/cselib.h
index 7209443..427ea1d 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 Free Software Foundation, Inc.
+   1999, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -24,17 +24,14 @@ typedef struct cselib_val_struct GTY(())
 {
   /* The hash value.  */
   unsigned int value;
-  union cselib_val_u
-  {
-    /* A VALUE rtx that points back to this structure.  */
-    rtx GTY ((tag ("1"))) val_rtx;
-    /* Used to keep a list of free cselib_val structures.  */
-    struct cselib_val_struct * GTY ((skip)) next_free;
-  } GTY ((desc ("1"))) u;
+
+  /* A VALUE rtx that points back to this structure.  */
+  rtx val_rtx;
 
   /* All rtl expressions that hold this value at the current time during a
      scan.  */
   struct elt_loc_list *locs;
+
   /* If this value is used as an address, points to a list of values that
      use it as an address in a MEM.  */
   struct elt_list *addr_list;
@@ -62,6 +59,8 @@ struct elt_list GTY(())
   cselib_val *elt;
 };
 
+extern void (*cselib_discard_hook) (cselib_val *);
+
 extern cselib_val *cselib_lookup (rtx, enum machine_mode, int);
 extern void cselib_init (bool record_memory);
 extern void cselib_clear_table (void);
@@ -70,5 +69,6 @@ extern void cselib_process_insn (rtx);
 extern enum machine_mode cselib_reg_set_mode (rtx);
 extern int rtx_equal_for_cselib_p (rtx, rtx);
 extern int references_value_p (rtx, int);
+extern rtx cselib_expand_value_rtx (rtx, bitmap, int);
 extern rtx cselib_subst_to_values (rtx);
 extern void cselib_invalidate_rtx (rtx);