Small change in register allocation criteria

util/ego/ra/ra.c

@@ -241,15 +241,13 @@ STATIC bool useful_item(item)
 	item_p item;
 {
 	/* See if it may be useful to put the item in a register.
-	 * A local variable that is not a parameter may always be put
-	 * in a register (as it need not be initialized).
+	 * A local variable may always be put in a register.
 	 * Other items must be used at least twice.
 	 */
 
 	int nruses = Lnrelems(item->it_usage);	
 	assert (nruses > 0); /* otherwise it would not be an item! */
-	return nruses > 1 || (item->it_type == LOCALVAR &&
-				item->i_t.it_off < 0);
+	return nruses > 1 || item->it_type == LOCALVAR;
 }
 
 

util/ego/ra/ra_profits.c

@@ -234,6 +234,9 @@ compute_profits(alloclist,time_opt)
 			}
 			t = cnt * time - dyn_inits(alloc->al_inits) * otime;
 			sc = (time_opt ? t : s);
+			/*
+			fprintf(stderr, "cnt: %d time: %d otime: %d t: %d s: %d score: %d\n", cnt, time, otime, t, s, sc);
+			*/
 			if (sc > maxsc) {
 				maxsc = sc;
 				alloc->al_regtype = rtyp;