doloop.c (doloop_modify_runtime <biv skips initial incr>): Adjust by absolute…

doloop.c (doloop_modify_runtime <biv skips initial incr>): Adjust by absolute loop increment, not loop increment.

	* doloop.c (doloop_modify_runtime <biv skips initial incr>): Adjust
	by absolute loop increment, not loop increment.

From-SVN: r57556

gcc/ChangeLog

+2002-09-27  Alan Modra  <amodra@bigpond.net.au>
+
+	* doloop.c (doloop_modify_runtime <biv skips initial incr>): Adjust
+	by absolute loop increment, not loop increment.
+
 2002-09-26  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* c-common.h: Follow spelling conventions.

gcc/doloop.c

@@ -668,8 +668,8 @@ doloop_modify_runtime (loop, iterations_max,
 	    fprintf (loop_dump_stream,
 	         "Doloop: Basic induction var skips initial incr.\n");
 
-	  diff = expand_simple_binop (mode, PLUS, diff, increment, diff,
-				      unsigned_p, OPTAB_LIB_WIDEN);
+	  diff = expand_simple_binop (mode, PLUS, diff, GEN_INT (abs_inc),
+				      diff, unsigned_p, OPTAB_LIB_WIDEN);
 	}
     }