reload.c (find_equiv_reg): If need_stable_sp is set, check if stack pointer is…

reload.c (find_equiv_reg): If need_stable_sp is set, check if stack pointer is changed directly in a PARALLEL.

	* reload.c (find_equiv_reg): If need_stable_sp is set,
	check if stack pointer is changed directly in a PARALLEL.

From-SVN: r21033

gcc/ChangeLog

+Thu Jul  9 18:01:05 1998  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* reload.c (find_equiv_reg): If need_stable_sp is set,
+	check if stack pointer is changed directly in a PARALLEL.
+
 Thu Jul  9 10:38:14 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* jump.c (duplicate_loop_exit_test): Fix thinko.

gcc/reload.c

@@ -6272,6 +6272,8 @@ find_equiv_reg (goal, insn, class, other, reload_reg_p, goalreg, mode)
 			      && reg_overlap_mentioned_for_reload_p (dest,
 								     goal))
 			    return 0;
+			  if (xregno == STACK_POINTER_REGNUM && need_stable_sp)
+			    return 0;
 			}
 		      else if (goal_mem && GET_CODE (dest) == MEM
 			       && ! push_operand (dest, GET_MODE (dest)))