re PR rtl-optimization/12147 (Wrong code with -O2 in context of reload)

	PR optimization/12147
	* reload1.c (reload_reg_free_p): RELOAD_OTHER conflicts with
	RELOAD_FOR_OPADDR_ADDR.
	(reload_reg_reaches_end_p): RELOAD_FOR_OTHER_ADDRESS register
	might be reused as RELOAD_FOR_OPADDR_ADDR register.

From-SVN: r77003

gcc/ChangeLog

+2004-01-30  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	PR optimization/12147
+	* reload1.c (reload_reg_free_p): RELOAD_OTHER conflicts with
+	RELOAD_FOR_OPADDR_ADDR.
+	(reload_reg_reaches_end_p): RELOAD_FOR_OTHER_ADDRESS register
+	might be reused as RELOAD_FOR_OPADDR_ADDR register.
+
 2004-01-30  Jan Hubicka  <jh@suse.cz>
 
 	* reload.c (get_secondary_mem):  Fix updating of

gcc/reload1.c

@@ -4316,6 +4316,7 @@ reload_reg_free_p (unsigned int regno, int opnum, enum reload_type type)
       /* In use for anything means we can't use it for RELOAD_OTHER.  */
       if (TEST_HARD_REG_BIT (reload_reg_used_in_other_addr, regno)
 	  || TEST_HARD_REG_BIT (reload_reg_used_in_op_addr, regno)
+	  || TEST_HARD_REG_BIT (reload_reg_used_in_op_addr_reload, regno)
 	  || TEST_HARD_REG_BIT (reload_reg_used_in_insn, regno))
 	return 0;
 
@@ -4494,6 +4495,7 @@ reload_reg_reaches_end_p (unsigned int regno, int opnum, enum reload_type type)
 	  return 0;
 
       return (! TEST_HARD_REG_BIT (reload_reg_used_in_op_addr, regno)
+	      && ! TEST_HARD_REG_BIT (reload_reg_used_in_op_addr_reload, regno)
 	      && ! TEST_HARD_REG_BIT (reload_reg_used_in_insn, regno)
 	      && ! TEST_HARD_REG_BIT (reload_reg_used, regno));