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SubjectRe: [BK+PATCH] remove __constant_memcpy
FromAlan Cox <>
Date17 Apr 2003 14:17:16 +0100
On Iau, 2003-04-17 at 01:57, Jeff Garzik wrote:
> The patch below is the conservative, obvious patch.  It only kicks in 
> when __builtin_constant_p() is true, and it only applies to the i386 
> arch.  

You are assuming the compiler is smart about stuff - it doesnt know
SSE/MMX for page copies etc. For small copies it should alays win, but
isn't it best if so to use __builtin_memcpy without our existing
macros not just trust the compiler ?

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