Hi, Alexandre, CC’ing Richard for his comments on this.
> On Aug 10, 2020, at 9:39 PM, Alexandre Oliva <ol...@adacore.com> wrote: >> I think that moving how to zeroing the registers part to each target >> will be a better solution since each target has >> Better idea on how to use the most efficient insns to do the work. > > It's certainly good to allow machine-specific optimized code sequences, > but it would certainly be desirable to have a machine-independent > fallback. It doesn't seem exceedingly hard to loop over the registers > and emit a (set (reg:M N) (const_int 0)) for each one that is to be > zeroed out. The current implementation already includes such machine-independent code, it should be very easy to add this. Richard, what’s your opinion on this? Do we need a machine-independent implementation to zeroing the registers for the default when the target does not provide a optimized Implementation? Thanks. Qing > >
