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Re: [PATCH 7/N v2] [x86_64] Vectorized math functions
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Andrew Senkevich <andrew dot n dot senkevich at gmail dot com>
- Cc: libc-alpha <libc-alpha at sourceware dot org>
- Date: Fri, 24 Apr 2015 17:37:02 +0000
- Subject: Re: [PATCH 7/N v2] [x86_64] Vectorized math functions
- Authentication-results: sourceware.org; auth=none
- References: <CAMXFM3sG=Uo6pJsNn34VtU+VDd4+VO+YyoUw3hCYpFi_K1cLsg at mail dot gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1412031814130 dot 20515 at digraph dot polyomino dot org dot uk> <CAMXFM3sTwm+pFdALMg4aaBroFbDds=LK1rTH4ksouR=MK-75Wg at mail dot gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1412111756090 dot 21111 at digraph dot polyomino dot org dot uk> <CAMXFM3tOpEoMb-oLoeSJNzOWYnJgte3bm_OR=oZ172n845WeZw at mail dot gmail dot com>
On Fri, 17 Apr 2015, Andrew Senkevich wrote:
> My question is do we need to test this new SSE2 version (which is just
> simple wrapper to scalar one)?
Well, we need to test each entry point. One of the existing deficiencies
of IFUNC testing (which would also apply to the CPU tests here) is that we
don't test the different variants of libm functions for different
processors - I don't think you need to address that in your patch. (So
make sure the SSE2 entry point is tested, but which function that testing
calls may depend on the processor.)
--
Joseph S. Myers
joseph@codesourcery.com