moar: falsey a num64 complains NYI

[duzy]

The falsey op does not deal with num64, and it complains This case of nqp falsey op NYI always. (prefix:sym<!>)

[moritz]

What code exactly triggers this error?

[duzy]

Not sure, but it's from https://github.com/perl6/nqp/blob/master/src/vm/moar/NQP/Ops.nqp#L99, I'm trying to make such code..

[duzy]

This segment reproduce the NYI:

my num $v := 1.0;
say('falsey: '~!$v);

[duzy]

I'm trying to make a quick fix for my hacking, and thinking about converting num64 into int64, but don't know how (NUM64_TO_INT64):

    elsif $val.result_kind == $MVM_reg_num64 {
        my $not_reg := $regalloc.fresh_register($MVM_reg_int64);
        my $ir := $regalloc.fresh_register($MVM_reg_int64);
        my @ins := $val.instructions;
        push_op(@ins, 'NUM64_TO_INT64', $ir, $val.result_reg);
        push_op(@ins, 'not_i', $not_reg, $ir);
        MAST::InstructionList.new(@ins, $not_reg, $MVM_reg_int64)
    }

But I believe it should have a better way to do a falsey on num64.

[duzy]

https://github.com/MoarVM/MoarVM/blob/master/lib/MAST/Ops.nqp#L2940
https://github.com/MoarVM/MoarVM/blob/master/lib/MAST/Ops.nqp#L3320

[duzy]

Falsey is still not working with the following segment of code:

my num $v := 1.0;
if $v {
    say('bool: okay..');
}
if !$v {
    say('falsey: ...');
}

Runing this segment in nqp-p is fine, but failed in nqp-m.

[duzy]

This falsey is complained:

my %sym;
if !+%sym {
    # ...
}