infinite loop in find_avail_set

[Jeffrey A Law]

  In message < Pine.LNX.4.10.9908261812110.24202-100000@biriani.cygnus.co.uk >you
 write:
  > > Contrary to Jeff's analysis, I'd like to present a test case that does
  > > in fact result in a loop.  I returned to my computer this morning to
  > > find that compiling yyparse in cexp.c for stage1 of new_ia32_branch does
  > > not complete. 
  > > 
  > > There's a built tree at /bcpl/int/rth/egcs/build/new/gcc with z.i being
  > > the preprocessed test case, if you have time to look at it quickly.
  > > Otherwise I'll look at it further when I get to the office.
  > 
  > It seems that Jeff misremembered having already installed the patch below.
  > 
  > Bernd
  > 
  > 	* gcse.c (hash_scan_insn): Don't scan obvious no-ops.

I must be going senile.  I really thought I had checked that in.  It's 
obviously
correct.  If you haven't do so already, can you please check it in?

Thanks,
jeff