Re: Disabling FMA instructions on an Itanium II platform

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To: gcc-help@xxxxxxxxxxx
Subject: Re: Disabling FMA instructions on an Itanium II platform
From: Tim Prince <n8tm@xxxxxxx>
Date: Thu, 03 Mar 2011 07:07:01 -0800
In-reply-to: <C7ED175E9818C25697B57745@xxxxxxxxxxxxxxxxxx>
References: <C7ED175E9818C25697B57745@xxxxxxxxxxxxxxxxxx>
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On 3/3/2011 7:04 AM, Raghu Reddy wrote:


        (p6) fma.s1 f9 = f10, f9, f10
        (p6) fma.d.s0 f6 = f7, f9, f10
salk2%

"disable FMA" is done by using individual fma instructions separatelyfor add and multiply, not by skipping the operations entirely.


--
Tim Prince

References:
- Disabling FMA instructions on an Itanium II platform
  - From: Raghu Reddy

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