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RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
- From: "Pawar, Amit" <Amit dot Pawar at amd dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Tue, 22 Mar 2016 14:57:52 +0000
- Subject: RE: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583
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>>>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?
For this function it is not better but good for other routines like strcat, strncat, stpcpy, stpncpy, strcpy and strncpy.
Thanks,
Amit Pawar
- 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
- Re: [PATCH x86_64] Update memcpy, mempcpy and memmove selection order for Excavator CPU BZ #19583