jump.c (jump_optimize): When simplifying noop moves and PUSH_ROUNDING...

	* jump.c (jump_optimize): When simplifying noop moves and
	PUSH_ROUNDING, fix thinko so we use same criterion for identifying
	the PUSHes to rewrite in second loop as we did in the first.

From-SVN: r21302

gcc/ChangeLog

+Mon Jul 20 01:11:11 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>
+
+	* jump.c (jump_optimize): When simplifying noop moves and
+	PUSH_ROUNDING, fix thinko so we use same criterion for identifying
+	the PUSHes to rewrite in second loop as we did in the first.
+
 Sun Jul 19 08:23:53 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* cplus-dem.c (demangle_nested_args): Make function definition

gcc/jump.c

@@ -402,9 +402,14 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan)
 		    if (GET_CODE (p) != INSN)
 		      break;
 		    pbody = PATTERN (p);
-		    if (GET_CODE (pbody) == SET)
+		    if (GET_CODE (pbody) != SET)
 		      break;
 		    dest = SET_DEST (pbody);
+		    /* Allow a no-op move between the adjust and the push.  */
+		    if (GET_CODE (dest) == REG
+			&& GET_CODE (SET_SRC (pbody)) == REG
+			&& REGNO (dest) == REGNO (SET_SRC (pbody)))
+		      continue;
 		    if (! (GET_CODE (dest) == MEM
 			   && GET_CODE (XEXP (dest, 0)) == POST_INC
 			   && XEXP (XEXP (dest, 0), 0) == stack_pointer_rtx))