This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: "Pawar, Amit" <Amit dot Pawar at amd dot com>
- Cc: "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Tue, 22 Mar 2016 07:50:20 -0700
- Subject: Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Authentication-results: sourceware.org; auth=none
- References: <SN1PR12MB073325E2FB320E3CECD22660978B0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOo_pgS7Vh1+JGWiYbHr3yXZmRDpxaLX6Xs9dzHr-TSH1A at mail dot gmail dot com> <SN1PR12MB0733B252EEDF7DE08EE91AF9978B0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOqhAUNhvD0=FZm23MDeVMRaYrnkZ51wWB1O4JRu8o2ywg at mail dot gmail dot com> <SN1PR12MB07332500CE527AA6EAC1C360978C0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOqGKGsWHsM1NO7L46QdtMALoG_Wq3mahg=beWSesAg0jg at mail dot gmail dot com> <SN1PR12MB0733A07FB69B2EC3831FB091978C0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOoYXJQWB_T0SOM9+vj38yTndYknBZyjU3MbdAyc9x+g8A at mail dot gmail dot com> <SN1PR12MB0733522F9520520B45459C24978C0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOqpbUF2m40pxjyr+O8pSrA9EmUgNsOcBPuP-wDaMqn+RQ at mail dot gmail dot com> <CAMe9rOr11s9j7i4Gk2yozXY-MWJLKpFXCKkFqoLW553tyJ4LZg at mail dot gmail dot com> <SN1PR12MB0733C372AE1AFC950CFBBF44978C0 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com> <CAMe9rOot+1NehTWA-LAurcZwQ-gmtvDzwHBPVro3cadAjsmALA at mail dot gmail dot com> <SN1PR12MB0733773BDA66FEA09901455C97800 at SN1PR12MB0733 dot namprd12 dot prod dot outlook dot com>
On Tue, Mar 22, 2016 at 4:08 AM, Pawar, Amit <Amit.Pawar@amd.com> wrote:
>>It was done based on assumption that AVX enabled machine has fast AVX unaligned load. If it isn't true for AMD CPUs, we can enable it for all Intel AVX CPUs and you can set it for AMD CPUs properly.
>
> Memcpy still needs to be fixed otherwise SSE2_Unaligned version is selected. Is it OK to fix in following way else please suggest.
So AMD processor doesn't want Fast_Unaligned_Load. Why is it
set?
--
H.J.
- References:
- [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583