[gcjx] Patch: FYI: Class object creation updates

[Tom Tromey]

I'm checking this in on the gcjx branch.

This patch fixes an optimization that was commented out in the
bytecode generator.

Tom

Index: gcjx/ChangeLog
from  Tom Tromey  <tromey@redhat.com>

	* bytecode/block.cc (optimize): Optimize goto-to-goto.

Index: gcjx/bytecode/block.cc
===================================================================
RCS file: /cvs/gcc/gcc/gcjx/bytecode/Attic/block.cc,v
retrieving revision 1.1.2.2
diff -u -r1.1.2.2 block.cc
--- gcjx/bytecode/block.cc 15 Jan 2005 07:34:06 -0000 1.1.2.2
+++ gcjx/bytecode/block.cc 8 Mar 2005 00:15:43 -0000
@@ -110,7 +110,8 @@
 	     && count < 10)
 	{
 	  // The first relocation in the target must be a 'goto'.
-	  ref_relocation targ_reloc = iter->get_target ()->relocations.back ();
+	  ref_relocation targ_reloc
+	    = iter->get_target ()->relocations.front ();
 	  if (targ_reloc->get_kind () != reloc_goto)
 	    break;
 	  ++count;
@@ -118,11 +119,12 @@
 	}
       if (iter != *i)
 	{
-#if 0 // FIXME this causes crashes
 	  // ITER is the new target.
 	  (*i)->set_target (iter->get_target ());
+	  // Update here so that we don't have a chance to point to a
+	  // dead block.
+	  (*i)->update ();
 	  changed = true;
-#endif
 	}
     }