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Re: Q. Re haifa and other stuff under Linux i386
- To: scherrey at proteus-tech dot com
- Subject: Re: Q. Re haifa and other stuff under Linux i386
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Thu, 25 Jun 1998 01:17:55 -0600
- cc: egcs at cygnus dot com
- Reply-To: law at cygnus dot com
In message <3591A3F9.E5D92ACB@gte.net>you write:
> Have upgraded my RedHat 5.1 to egcs 1.0.3a release and was wondering if
> haifa instruction scheduling was intended to be used for my platform. I
The x86 port hasn't been tuned for the haifa scheduler yet. Using
haifa shouldn't cause incorrect code to be generated, but it's probably
not going to help performance in any significant way.
> someone point me to a paper or documentation on what haifa is?
It's just a new instruction scheduler implementation that has the
ability to perform cross block scheduling and more accurately model
superscalar machines.
jeff