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Re: Should -fcross-jumping be part of -O1?
- From: Mike Stump <mrs at apple dot com>
- To: Jan Hubicka <hubicka at ucw dot cz>
- Cc: Scott Robert Ladd <coyote at coyotegulch dot com>, gcc mailing list <gcc at gcc dot gnu dot org>
- Date: Wed, 3 Dec 2003 17:17:10 -0800
- Subject: Re: Should -fcross-jumping be part of -O1?
On Wednesday, December 3, 2003, at 04:14 PM, Jan Hubicka wrote:
So that way of thinking leaves us with discussion on whether we
actually
needs multiple levels on size/speed settings..
As one of the people concerned with compilation speed, -O0 is fine. We
want it to mean, go fast, easy to debug, no optimizations that slow
compile time, but can include optimizations that improve compile time
that are safe, well tested and robust. With -O2, we don't care about
compilation speed, well, we do, but not as much as we do about -O0.
So, unless someone wants -O0 to not include some optimizations, I think
status quo is fine. From most of what I'ev seen to date on the list,
it would like having more optimizations (from a very limited set of all
optimizations) at -O0 would be fine.