* loop.c (strength_reduce): Fix biv removal code.

From-SVN: r33344

gcc/ChangeLog

+Sat Apr 22 22:35:38 MET DST 2000  Jan Hubicka  <jh@suse.cz>
+
+	* loop.c (strength_reduce): Fix biv removal code.
+
 2000-04-22  Richard Henderson  <rth@cygnus.com>
 
 	* predict.c (estimate_probability): Examine both sides of

gcc/loop.c

@@ -4160,19 +4160,7 @@ strength_reduce (loop, insn_count, unroll_p, bct_p)
 				 INSN_LUID (p));
 		}
 	      /* Remove this biv from the chain.  */
-	      if (bl->next)
-		{
-		  /* We move the following giv from *bl->next into *bl.
-		     We have to update reg_biv_class for that moved biv
-		     to point to its new address.  */
-		  *bl = *bl->next;
-		  reg_biv_class[bl->regno] = bl;
-		}
-	      else
-		{
-		  *backbl = 0;
-		  break;
-		}
+	      *backbl = bl->next;
 	    }
 
 	  /* If we can't make it a giv,