(reload): Initialize the previous_offset fields in reg_eliminate

before calling setup_save_areas.

From-SVN: r12781

gcc/reload1.c

@@ -1460,8 +1460,14 @@ reload (first, global, dumpfile)
       /* If we have caller-saves, set up the save areas and see if caller-save
 	 will need a spill register.  */
 
-      if (caller_save_needed
-	  && ! setup_save_areas (&something_changed)
+      if (caller_save_needed)
+	{
+	  /* Set the offsets for setup_save_areas.  */
+	  for (ep = reg_eliminate; ep < &reg_eliminate[NUM_ELIMINABLE_REGS];
+	       ep++)
+	    ep->previous_offset = ep->max_offset;
+
+	  if ( ! setup_save_areas (&something_changed)
 	      && caller_save_spill_class  == NO_REGS)
 	    {
 	      /* The class we will need depends on whether the machine
@@ -1474,6 +1480,7 @@ reload (first, global, dumpfile)
 		= CLASS_MAX_NREGS (caller_save_spill_class, Pmode);
 	      something_changed = 1;
 	    }
+	}
 
       /* See if anything that happened changes which eliminations are valid.
 	 For example, on the Sparc, whether or not the frame pointer can