Re: How to disable sibcall optimization?

[Richard Henderson <rth at cygnus dot com>]

On Fri, Mar 24, 2000 at 04:00:46PM +0100, Jan Hubicka wrote:
> I personally think that the performance regressions caused by the early
> flowgraph construction and jump mentioned in this email are reason, but OK.
> I will try to figure out what really happends w/o such switch.

Eh?  We've crossed wires.  I said there was no reason we didn't
have the switch, which means that there's no reason not to add one.
Feel free to generate a patch.  ;-)

> The slowdowns caused by latest snapshot are quite notable (at least
> on Athlon/spec2000 approx 15%)

Yowza.  I wonder if simply removing the cleanup_cfg call
from optimize_sibling_and_tail_recursive_calls is enough
to fix things.


r~