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Re: [Qemu-devel] [PATCH 1/4] target-i386: fix {min, max}{pd, ps, sd, ss}


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH 1/4] target-i386: fix {min, max}{pd, ps, sd, ss} SSE2 instructions
Date: Sat, 7 Jan 2012 20:22:53 +0000

On 7 January 2012 20:09, Aurelien Jarno <address@hidden> wrote:
> minpd, minps, minsd, minss and maxpd, maxps, maxsd, maxss SSE2
> instructions have been broken when switching target-i386 to softfloat.
> It's not possible to use comparison instructions on float types anymore
> to softfloat, so use the floatXX_min anf floatXX_max functions instead.

Nope, this gets the x86 special cases wrong. This has been discussed
here before:

http://www.mail-archive.com/address@hidden/msg85557.html
has the right implementation (from Jason Wessell) and a comment
(from me) about why it's right.

-- PMM



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