* regrename.c (do_replace): Copy REG_POINTER value to new reg.

From-SVN: r140616

gcc/ChangeLog

+2008-08-23  Steve Ellcey  <sje@cup.hp.com>
+
+	* regrename.c (do_replace): Copy REG_POINTER value to new reg.
+
 2008-09-23  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* alias.c (find_base_value): Use FIND_BASE_TERM.

gcc/regrename.c

@@ -357,11 +357,13 @@ do_replace (struct du_chain *chain, int reg)
     {
       unsigned int regno = ORIGINAL_REGNO (*chain->loc);
       struct reg_attrs * attr = REG_ATTRS (*chain->loc);
+      int reg_ptr = REG_POINTER (*chain->loc);
 
       *chain->loc = gen_raw_REG (GET_MODE (*chain->loc), reg);
       if (regno >= FIRST_PSEUDO_REGISTER)
 	ORIGINAL_REGNO (*chain->loc) = regno;
       REG_ATTRS (*chain->loc) = attr;
+      REG_POINTER (*chain->loc) = reg_ptr;
       df_insn_rescan (chain->insn);
       chain = chain->next_use;
     }