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Re: PATCH: 64bit SSE4 optimized memcmp
- From: Ulrich Drepper <drepper at redhat dot com>
- To: libc-alpha at sourceware dot org
- Date: Tue, 13 Apr 2010 06:59:45 -0700
- Subject: Re: PATCH: 64bit SSE4 optimized memcmp
- References: <20100412224015.GA24384@intel.com>
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On 04/12/2010 03:40 PM, H.J. Lu wrote:
> This is 64bit SSE4 optimized memcmp. It improves memcmp by upto 3X
> on Intel Core i7.
I don't see any SSE4.2 instructions being used. ptest is an SSE4.1
instruction.
Also, your Makefile change contains references to a whole set of other
files which haven't yet been submitted and therefore the patch doesn't
apply.
- --
â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â
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