[PATCH] rs6000: Support doubleword swaps removal in rot64 load store [PR100085]

Segher Boessenkool segher@kernel.crashing.org
Thu Jun 3 20:19:21 GMT 2021


On Thu, Jun 03, 2021 at 08:09:36AM -0500, Bill Schmidt wrote:
> Note also that swap optimization can handle more general cases than 
> simplify-rtx.

Do you have examples?  That should be fixed (unless it is something
Power-specific?)

> In my view it's best to have it covered in both places.

Oh certainly, and we need that p8swaps pass on at least p8 anyway (but
perhaps we can allow TImode in vector regs on later cpus).


Segher


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