[PATCH] Reduce cost of Athlon multiplication sequences
Richard Henderson
rth@redhat.com
Fri Jan 6 22:25:00 GMT 2006
On Fri, Jan 06, 2006 at 08:41:07AM +0100, Jan Hubicka wrote:
> 1) Remove TARGET_DECOMPOSE_LEA and leave us with some fixed cost for
> LEA (probably 2). At the moment we never consider rtx_cost for other
> leas than add+shift/add+add sequences so this would do resonable job.
> (on P4 add+shift is more expensive than add+add)
Given that we don't really do too much else tuning for p4, I suspect
that we can't measure the difference. Let's just remove it.
r~
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