fwprop.c (try_fwprop_subst): Skip profitability check for forward propagation into an address...

2007-11-15  Paolo Bonzini  <bonzini@gnu.org>

	* fwprop.c (try_fwprop_subst): Skip profitability check for forward
	propagation into an address; that's done in should_replace_address.

From-SVN: r130201

gcc/ChangeLog

+2007-11-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	* fwprop.c (try_fwprop_subst): Skip profitability check for forward
+	propagation into an address; that's done in should_replace_address.
+		
 2007-11-15  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
 	* config/spu/spu-protos.h (legitimate_const): Remove prototype.
 	* config/spu/spu.c (legitimate_const): Remove.
 	(classify_immediate): Inline call to legitimate_const.
-	(spu_legitimate_address): Likewise.  Allow SMBOL_REF + CONST_INT
+	(spu_legitimate_address): Likewise.  Allow SYMBOL_REF + CONST_INT
 	for any constant, not just -512 .. 511.
 
 2007-11-15  Sa Liu  <saliu@de.ibm.com>

gcc/fwprop.c

@@ -697,7 +697,8 @@ try_fwprop_subst (struct df_ref *use, rtx *loc, rtx new, rtx def_insn, bool set_
       ok = false;
     }
 
-  else if (rtx_cost (SET_SRC (set), SET) > old_cost)
+  else if (DF_REF_TYPE (use) == DF_REF_REG_USE
+	   && rtx_cost (SET_SRC (set), SET) > old_cost)
     {
       if (dump_file)
 	fprintf (dump_file, "Changes to insn %d not profitable\n",