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Re: [PATCH roland/arm-memcpy] ARM: Make multiarch memcpy always use NEON when compiler does
- From: Roland McGrath <roland at hack dot frob dot com>
- To: Andreas Schwab <schwab at suse dot de>
- Cc: libc-ports at sourceware dot org
- Date: Thu, 16 May 2013 17:31:21 -0700 (PDT)
- Subject: Re: [PATCH roland/arm-memcpy] ARM: Make multiarch memcpy always use NEON when compiler does
- References: <20130513224722 dot 9F17C2C05E at topped-with-meat dot com> <mvmip2mype2 dot fsf at hawking dot suse dot de>
> Preprocessor directives in macro arguments give undefined behaviour.
We write in GNU C, where they have always been perfectly fine.