Ruby

ZJIT: Format negative offsets as small negative hex values (#16248)

Before:

Optimized HIR:
fn block in <main>@benchmarks/setivar.rb:40:
bb1():
  EntryPoint interpreter
  v1:BasicObject = LoadSelf
  Jump bb3(v1)
bb2():
  EntryPoint JIT(0)...

[ruby/prism] Generate RBI from RBS

https://github.com/ruby/prism/commit/2c88ed893f

[ruby/prism] Don't document rbs inline magic comment

https://github.com/ruby/prism/commit/e371985c91

[ruby/prism] rbs-inline

https://github.com/ruby/prism/commit/1fdd4c5a49

[ruby/json] Remove unused load_uint8x16_4 function.

https://github.com/ruby/json/commit/93bc1b3838

ZJIT: Refine effects for CheckInterrupts to InterruptFlag|Control (#16240)

CheckInterrupts only reads ec->interrupt_flag and conditionally
side-exits — it doesn't touch PatchPoint invariants or the allocator.
Add an InterruptFlag leaf under Memory in the abstract heap DAG and...

Improve error message failing to copy proc

Previously, when passing an unshareable proc to a Ractor we would get
the message:

'Ractor.new': allocator undefined for Proc (TypeError)

With this change we get:

'Ractor.new': can not copy unshareable object #<Proc:0x00007f1b31713600 test.rb:2> (Ractor::Error)...

ZJIT: Ratchet down Guard* effects (#16236)

Guards don't write to (e.g. PatchPoint) memory, just change if we
side-exit into the interpreter or not, so lower their effects.

ZJIT: Refine effects for IsBitNotEqual and FixnumBitCheck to Empty (#16237)

Both instructions are pure computations with no side effects:
IsBitNotEqual is a cmp+csel (identical to IsBitEqual, already Empty),
and FixnumBitCheck is a test+csel on a tagged Fixnum bit. Neither...

ZJIT: Pull out GetEP from IsBlockParamModified (#16234)

We can hopefully de-duplicate this GetEP soon.