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Date: Wed, 05 Jan 2011 16:04:43 +0100
From: Dimitry Andric <dim@FreeBSD.org>
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To: Nathan Whitehorn <nwhitehorn@freebsd.org>
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Cc: Gleb Kurtsou <gleb.kurtsou@gmail.com>, src-committers@freebsd.org,
	John Baldwin <jhb@freebsd.org>, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org, Alexander Best <arundel@freebsd.org>
Subject: Re: svn commit: r216977 - in head/libexec/rtld-elf: amd64 i386
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On 2011-01-05 15:50, Nathan Whitehorn wrote:
> You would also want this to be cross-platform, in which case it's more
> than floating point. E.g. on powerpc, you also want to disable both FP
> and vector extensions, which use separate sets of instructions and
> registers.

Yeah, but in any case, hacking the compiler itself is not the proper way
to achieve this goal, IMHO.  It should go into sys.mk, or more
appropriately bsd.cpu.mk.  I'll make a crude diff for this tonight.


> I guess overriding CPU type to be something very old (386?)
> potentially deoptimizes the code?

That won't work for amd64. :)