cselib.c (LONG_TERM_PRESERVED_VALUE_P): Remove.

	* cselib.c (LONG_TERM_PRESERVED_VALUE_P): Remove.
	(cselib_preserve_definitely, cselib_clear_preserve): Remove.
	(cselib_preserve_only_values): Remove retain argument, don't
	traverse hash table with cselib_{preserve_definitely,clear_preserve}.
	* cselib.h (cselib_preserve_only_values): Remove retain argument.
	* var-tracking.c (micro_operation): Move insn field before union.
	Add DEF_VEC_O and DEF_VEC_ALLOC_O for this type.
	(struct variable_tracking_info_def): Remove n_mos field, change
	mos into a vector of micro_operations.
	(count_uses, count_uses_1, count_stores, count_with_sets): Remove.
	(bb_stack_adjust_offset, log_op_type, add_uses, add_stores,
	compute_bb_dataflow, emit_notes_in_bb): Adjust for VTI (bb)->mos
	changing into a vector.
	(add_with_sets): Likewise.  Ensure MO_VAL_USE uops from add_stores
	come before all other uops generated by add_stores.
	(vt_add_function_parameters): Adjust for cselib_preserve_only_values
	argument removal.
	(vt_initialize): Likewise.  Adjust for VTI (bb)->mos changing into
	a vector.  Run just one pass over the bbs instead of separate counting
	and computation phase.
	(vt_finalize): Free VTI (bb)->mos vector instead of array.

From-SVN: r157403

1 files changed, 2 insertions, 41 deletions

diff --git a/gcc/cselib.c b/gcc/cselib.c
index 515fc32..f63ea3f 100644
--- a/gcc/cselib.c
+++ b/gcc/cselib.c
@@ -1,6 +1,6 @@
 /* Common subexpression elimination library for GNU compiler.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -155,8 +155,6 @@ void (*cselib_record_sets_hook) (rtx insn, struct cselib_set *sets,
 
 #define PRESERVED_VALUE_P(RTX) \
   (RTL_FLAG_CHECK1("PRESERVED_VALUE_P", (RTX), VALUE)->unchanging)
-#define LONG_TERM_PRESERVED_VALUE_P(RTX) \
-  (RTL_FLAG_CHECK1("LONG_TERM_PRESERVED_VALUE_P", (RTX), VALUE)->in_struct)
 
 
 
@@ -436,51 +434,14 @@ cselib_preserved_value_p (cselib_val *v)
   return PRESERVED_VALUE_P (v->val_rtx);
 }
 
-/* Mark preserved values as preserved for the long term.  */
-
-static int
-cselib_preserve_definitely (void **slot, void *info ATTRIBUTE_UNUSED)
-{
-  cselib_val *v = (cselib_val *)*slot;
-
-  if (PRESERVED_VALUE_P (v->val_rtx)
-      && !LONG_TERM_PRESERVED_VALUE_P (v->val_rtx))
-    LONG_TERM_PRESERVED_VALUE_P (v->val_rtx) = true;
-
-  return 1;
-}
-
-/* Clear the preserve marks for values not preserved for the long
-   term.  */
-
-static int
-cselib_clear_preserve (void **slot, void *info ATTRIBUTE_UNUSED)
-{
-  cselib_val *v = (cselib_val *)*slot;
-
-  if (PRESERVED_VALUE_P (v->val_rtx)
-      && !LONG_TERM_PRESERVED_VALUE_P (v->val_rtx))
-    {
-      PRESERVED_VALUE_P (v->val_rtx) = false;
-      if (!v->locs)
-	n_useless_values++;
-    }
-
-  return 1;
-}
-
 /* Clean all non-constant expressions in the hash table, but retain
    their values.  */
 
 void
-cselib_preserve_only_values (bool retain)
+cselib_preserve_only_values (void)
 {
   int i;
 
-  htab_traverse (cselib_hash_table,
-		 retain ? cselib_preserve_definitely : cselib_clear_preserve,
-		 NULL);
-
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
     cselib_invalidate_regno (i, reg_raw_mode[i]);