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[PATCH] Atom: Scheduler improvements for better imul placement


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?


ChangeLog:

2012-04-10  Yuri Rumyantsev  <ysrumyan@gmail.com>

	* config/i386/i386.c (x86_sched_reorder): New function.
	Add new function x86_sched_reorder
	to take advantage of Atom pipelened IMUL execution.

Attachment: imul_sched.patch
Description: Binary data


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