cfgcleanup.c (try_forward_edges): Do not update BB_FORWARDER_BLOCK.

	* cfgcleanup.c (try_forward_edges): Do not update BB_FORWARDER_BLOCK.
	(try_optimize_cfg): Update BB_FORWARDER_BLOCK if try_forward_edges
	returns true.

From-SVN: r174046

gcc/ChangeLog

+2011-05-22  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* cfgcleanup.c (try_forward_edges): Do not update BB_FORWARDER_BLOCK.
+	(try_optimize_cfg): Update BB_FORWARDER_BLOCK if try_forward_edges
+	returns true.
+
 2011-05-22  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* config/mips/mips.c (mips_default_arch): Honor MIPS_ISA_DEFAULT.

gcc/cfgcleanup.c

@@ -599,9 +599,6 @@ try_forward_edges (int mode, basic_block b)
 			     + REG_BR_PROB_BASE / 2)
 			    / REG_BR_PROB_BASE);
 
-	  if (!FORWARDER_BLOCK_P (b) && forwarder_block_p (b))
-	    b->flags |= BB_FORWARDER_BLOCK;
-
 	  do
 	    {
 	      edge t;
@@ -2693,7 +2690,10 @@ try_optimize_cfg (int mode)
 
 	      /* Simplify branch to branch.  */
 	      if (try_forward_edges (mode, b))
-		changed_here = true;
+		{
+		  update_forwarder_flag (b);
+		  changed_here = true;
+		}
 
 	      /* Look for shared code between blocks.  */
 	      if ((mode & CLEANUP_CROSSJUMP)