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Re: [PATCH] Fix small structure passing on x86-64
> > These seems to be all wrong in all GCC versions on x86-64. I've updated
> > move_block_to_reg to tage size in bytes, not in the number of words. It
> > uses partial move at the end of block if there is appropriate mode or
> > bitfield extraction otherwise.
> > I hope I did not introduced any endianity issues, but I am not sure if
> > there is big endian machine that cares.
> > Seems sane?
> Are you sure that's really the way to go? Why not generate PARALLELs like the
> other ports?
Well, x86-64 does generate parallels, but the generic code is using too
long moves to load them...
If I have structure of size 3 bytes to be passed in RAX, how should the
parallel look like?
> Eric Botcazou