combine.c (combine_simplify_rtx): Clear op0_mode if simplification suceeded.

	* combine.c (combine_simplify_rtx): Clear op0_mode if simplification
	suceeded.

From-SVN: r42286

gcc/ChangeLog

+Fri May 18 22:42:04 CEST 2001  Jan Hubicka  <jh@suse.cz>
+
+	* combine.c (combine_simplify_rtx): Clear op0_mode if simplification
+	suceeded.
+
 Fri May 18 07:26:34 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* genrecog.c (enum decision_type): Add DT_elt_zero-wide_safe.

gcc/combine.c

@@ -3693,7 +3693,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
     }
 
   if (temp)
-    x = temp, code = GET_CODE (temp);
+    x = temp, code = GET_CODE (temp), op0_mode = VOIDmode;
 
   /* First see if we can apply the inverse distributive law.  */
   if (code == PLUS || code == MINUS