On Mon, 13 Sept 2021 at 15:04, Richard Henderson <richard.hender...@linaro.org> wrote: > > On 9/13/21 2:54 AM, Peter Maydell wrote: > > Optimize the MVE VSHLL insns by using TCG vector ops when possible. > > This includes the VMOVL insn, which we handle in mve.decode as "VSHLL > > with zero shift count". > > > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > > --- > > The cases here that I've implemented with ANDI then shift > > could also be implemented as shift-then-shift. Is one better > > than another? > > I would expect and + shift to be preferred over shift + shift.
OK. (I wasn't sure, because and + shift requires another insn to assemble the immediate constant, I think.) -- PMM
