[patch] PR middle-end/17278

[Joseph S. Myers]

On Thu, 27 Jan 2005, Steven Bosscher wrote:

> 	* opts.c (decode_options): Move flag_thread_jumps from -O1 and
> 	higher to -O2 and higher.  Likewise for tree PRE.
> 	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Only iterate at -O2
> 	and better.

invoke.texi documents, both under the -O options and under the individual 
options they enable, which options are enabled at which -O option; that 
documentation needs updating.

-- 
Joseph S. Myers               http://www.srcf.ucam.org/~jsm28/gcc/
    jsm@polyomino.org.uk (personal mail)
    joseph@codesourcery.com (CodeSourcery mail)
    jsm28@gcc.gnu.org (Bugzilla assignments and CCs)