more tidying of x86 feature tests

Richard Henderson
Tue Mar 6 17:19:00 GMT 2007

On Tue, Mar 06, 2007 at 05:18:44PM +0100, Jan Hubicka wrote:
> does it really make CC1 smaller/faster?

Dunno; I forgot to save the old cc1.

> I would expect that in many
> places we test things like TARGET_something || TARGET_something_else
> that can be simplified into single & operation in the former scheme.

Yes, but here we have no and operations.  That can't help but be
a bit faster.

> THe individual flags could probably use some more comments, I will try
> to put together something.

Yes.  I think there are also some that are redundant.  Particularly
wrt to QImode promotion, and partial register stall/dependencies.


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