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Re: [PATCH] Atom: Scheduler improvements for better imul placement


Igor Zamyatin <izamyatin@gmail.com> writes:

> Hi All!
>
> It is known that imul placement is rather critical for Atom processors
> and changes try to improve imul scheduling for Atom.
>
> This gives +5% performance on several tests from new OA 2.0 testsuite
> from EEMBC.
>
> Tested for i386 and x86-64, ok for trunk?

Did you measure how much this slows down the compiler when compiling
for Atom? The new pass looks rather slow.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only


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