[libre-riscv-dev] Fwd: Introduction

[Jacob Lifshay]

On Thu, May 2, 2019, 17:39 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
wrote:

>
>         j = 0
>         o_bits = []
>         for i in range(self.o_dat.nbits):
>             if i in self.retained_bits:
>                 o_bits.append(self.bits[j])
>                 j = j + 1
>             else:
>                 o_bits.append(C(0,1))
>             m.d.comb += self.o_dat.eq(Cat(*o_bits))
>
> there's proooobably.... there's probably a way to get that down
> somewhat (getting rid of j) by using "yield from", moving it to a
> function...
>
yield from doesn't do the same thing:

yield from bits

is like

for i in bits:
    yield i

it goes through every element in bits before going back, rather than
inserting the C(0, 1) values in the sequence like the original code does.

Jacob