------- Comment #4 from pluto at agmk dot net 2007-08-06 12:56 ------- (In reply to comment #3) > Subject: Re: missed memcpy -> movdqa optimization. > > On 6 Aug 2007 12:42:18 -0000, pluto at agmk dot net > <[EMAIL PROTECTED]> wrote: > > moreover i'm wondering why gcc uses movdqa for unaligned loads? > > Because __m128i is assumed to be aligned.
so, as far i can see currently there's no way to generate movdqu load with <emmintrin.h> and __builtin_memcpy( &__m128i, unaligned_ptr, 16 ) and i must write a short inline assembly for this purpose. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32951
