Should -fcross-jumping be part of -O1?

[Felix Lee]

kenner@vlsi1.ultra.nyu.edu (Richard Kenner):
>     (checking whether combinations of -f switches produce correct
>     code is a separate issue, 
> No, that's the issue being discussed and what was meant by it being a
> QA problem.

no, that should be done no matter what -O options there are.
more -O options create more issues that have to be checked, and
making sure that 5 -O options work sensibly is a lot simpler than
making sure 4**5 -O options work sensibly.

and anyone who wants to play with all the -f flags is probably
going to be savvy enough to handle the problems they cause.  the
-O flags should be simple and reliable for general users.
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