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Mail Archives: djgpp/2001/06/25/23:07:52

Date: Mon, 25 Jun 2001 22:42:11 -0400
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From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <3b37e92e.288745911@news.primus.ca> (invalid@erehwon.invalid)
Subject: Re: DJGPP reserves wrong int size
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> Modern processors care about alignments as large as *256 bits*!? 64
> bits for doubles or for ints on 64 bit chips, I figured, but 256!?

Cache lines are often that large.  Aligning data to cache lines
improves cache performance.

And long doubles should be 16-byte aligned (128 bits), which is only
half of the the default anyway.

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