re PR rtl-optimization/33828 (Issues with code hoisting implementation in gcse.c)

	PR rtl-optimization/33828
	* gcse.c (compute_code_hoist_vbeinout): Fix order of computation
	of VBEIN and VBEOUT.

From-SVN: r129832

gcc/ChangeLog

+2007-11-01  Steven Bosscher  <stevenb.gcc@gmail.com>
+
+	PR rtl-optimization/33828
+	* gcse.c (compute_code_hoist_vbeinout): Fix order of computation
+	of VBEIN and VBEOUT.
+
 2007-11-01  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* optabs.c (prepare_cmp_insn): Merge a couple of conditional blocks.

gcc/gcse.c

@@ -4772,10 +4772,14 @@ compute_code_hoist_vbeinout (void)
 	 the convergence.  */
       FOR_EACH_BB_REVERSE (bb)
 	{
-	  changed |= sbitmap_a_or_b_and_c_cg (hoist_vbein[bb->index], antloc[bb->index],
-					      hoist_vbeout[bb->index], transp[bb->index]);
 	  if (bb->next_bb != EXIT_BLOCK_PTR)
-	    sbitmap_intersection_of_succs (hoist_vbeout[bb->index], hoist_vbein, bb->index);
+	    sbitmap_intersection_of_succs (hoist_vbeout[bb->index],
+					   hoist_vbein, bb->index);
+
+	  changed |= sbitmap_a_or_b_and_c_cg (hoist_vbein[bb->index],
+					      antloc[bb->index],
+					      hoist_vbeout[bb->index],
+					      transp[bb->index]);
 	}
 
       passes++;