Add no-argument form of RFI

[interfect]

No description provided.

[paultech]

I feel like the emulator/assembler should be strict in requiring all operations require a argument. The specification does outline the use of a operand on all instructions.

[Yamakaky]

I agree

[interfect]

I think the assembler should be liberal in what it accepts. The operand of
RFI is never sued, so while specifying one sometimes could be useful for
optimizations (RFI POP), having to specify something always is just going
to waste users' time and make code worse. Having an "RFI 0" in code is just
confusing, and getting an error because you didn't specify an argument
that's always discarded is super annoying. The assembler should provide a
sane default.

On Thu, Oct 6, 2016 at 8:21 PM, Yamakaky notifications@github.com wrote:

I agree

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[eva-knight]

I think that given the spec states it takes an argument, it'd be better to leave as is. If you're annoyed by the RFI 0 and whatnot in your code, you could just make a macro for RFI 0, eg "macro FOO=RFI 0" or something. I think adding special cases into the code like this will end up too messy (hence why stuff like "asciiz" and "reserve" are implemented as default macros).