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Re: [PATCH roland/arm-memcpy] ARM: Make multiarch memcpy always use NEON when compiler does
- From: Andreas Schwab <schwab at suse dot de>
- To: Roland McGrath <roland at hack dot frob dot com>
- Cc: libc-ports at sourceware dot org
- Date: Tue, 14 May 2013 09:47:01 +0200
- 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>
Roland McGrath <roland@hack.frob.com> writes:
> IFUNC_IMPL (i, name, memcpy,
> IFUNC_IMPL_ADD (array, i, memcpy, hwcap & HWCAP_ARM_NEON,
> - __memcpy_neon)
> +#ifdef __ARM_NEON__
> + memcpy
> +#else
> + __memcpy_neon
> +#endif
> + )
Preprocessor directives in macro arguments give undefined behaviour.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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