ZJIT: Merge Send and SendWithoutBlock

[tekknolagi]

We have a lot of duplicated code paths now that we optimize both sends with blocks and sends without blocks. Let's merge the HIR instructions SendWithBlock and Send. A PR will need to:

• Merge both instructions into Send
• Make sure all the SendWithoutBlock specializations appropriately check both VM_CALL_ARGS_BLOCKARG and blockiseq
• Have the codegen call rb_vm_opt_send_without_block if we definitely don't have a block (see above) and rb_vm_send otherwise

This should de-dup type_specialize and optimize_c_calls.

[chancancode]

Happy to pick this up as a continuation of ruby#15911. Pretty confident this would work out nicely in type_specialize, will have to see what the rest of the fallout looks like when I try it

[tekknolagi]

We can close this one after we de-dup the ccall stuff?

[chancancode]

Yes, correct that’s the plan 🙂 hope to get back to this in the next few days so we can wrap it up!

[chancancode]

@tekknolagi sorry been busy, I still have a wip branch locally, but I saw that you started ruby#16227, I think that may remove the need to do some of this, should I wait for you to finish that before revisiting?

other than merging the ccall stuff, I was also going to merge the counters/reasons and make the enum as discussed, but that can wait also

[tekknolagi]

No, please go ahead. I was messing around to check something out. Not stressed