regrename.c (copyprop_hardreg_forward): Only search for a previously processed block if...

        * regrename.c (copyprop_hardreg_forward): Only search for a
        previously processed block if the current block only has one
        predecessor.

From-SVN: r90968

gcc/ChangeLog

+2004-11-20  Jeff Law  <law@redhat.com>
+
+	* regrename.c (copyprop_hardreg_forward): Only search for a
+	previously processed block if the current block only has one
+	predecessor.
+
 2004-11-20  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-ssa-threadupdate.c, tree-vectorizer.c: Fix comment

gcc/regrename.c

@@ -1757,7 +1757,7 @@ copyprop_hardreg_forward (void)
 	 processed, begin with the value data that was live at
 	 the end of the predecessor block.  */
       /* ??? Ought to use more intelligent queuing of blocks.  */
-      if (EDGE_COUNT (bb->preds) > 0)
+      if (EDGE_COUNT (bb->preds) == 1)
 	for (bbp = bb; bbp && bbp != EDGE_PRED (bb, 0)->src; bbp = bbp->prev_bb);
       if (EDGE_COUNT (bb->preds) == 1
 	  && ! (EDGE_PRED (bb, 0)->flags & (EDGE_ABNORMAL_CALL | EDGE_EH))