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On 4 Jan 2015, at 21:06, Tim Northover <t.p.northover at gmail.com> wrote: >>> I’ve managed to replace the load/store intrinsics with pointer dereferences (along with a typedef to get the alignment correct). This generates 100% the same IR + asm as the auto-vectorized C version (both using -O3), and works with the toolchain in the latest XCode. Are there any concerns around doing

...and pointer dereferences byteswaps the entire 128-bit number). While pointer dereference does work just as well (and better, given this defect) as VLD1 it is explicitly *not supported*. The ACLE mandates that there are only certain ways to legitimately "create" a vector object - vcreate, vcombine, vreinterpret and vload. NEON intrinsic types don't exist in memory (memory is modelled as a sequence of scalars, as in the C model). For this reason Renato I don't think we should advise people to work around the API, as who knows what problems that will cause later. The reason above is...