loop.c (load_mems): Don't hoist written floating point mem if -ffloat-store.

	* loop.c (load_mems): Don't hoist written floating point mem
	if -ffloat-store.

From-SVN: r30875

gcc/ChangeLog

+1999-12-12  Stephen L Moshier <moshier@mediaone.net>
+
+	* loop.c (load_mems): Don't hoist written floating point mem
+	if -ffloat-store.
+	
 1999-12-12  Mark Mitchell  <mark@codesourcery.com>
 
 	* except.h (struct eh_queue): Add `next' pointer.

gcc/loop.c

@@ -9825,7 +9825,11 @@ load_mems (scan_start, end, loop_top, start)
 	    }
 	  mem_list_entry = XEXP (mem_list_entry, 1);
 	}
-	  
+
+      if (flag_float_store && written
+	  && GET_MODE_CLASS (GET_MODE (mem)) == MODE_FLOAT)
+	loop_mems[i].optimize = 0;
+  
       /* If this MEM is written to, we must be sure that there
 	 are no reads from another MEM that aliases this one.  */ 
       if (loop_mems[i].optimize && written)