1536037 - Add JumpList variant for jump across bytecode-lets

Status: ASSIGNED

(Core :: JavaScript Engine, enhancement, P3)

Description

[Tooru Fujisawa [:arai]]

bug 1535994 will add BytecodeSection (or maybe different name) for storing bytecode-let.
after that, we need to prepare a variant of JumpList that can handle jump across multiple BytecodeSections.

after that, we're ready to compose bytecode-lets in bug 1464311.

Comment 1

[Tooru Fujisawa [:arai]]

this also needs a variant of JumpTarget to specify jump target that can be different BytecodeSection than current one.
also, the jump can be emitted between not-yet-composed 2 sections,
so we should lazily patch jumps across multiple sections, maybe at the point around JSScript::finishFromEmitter.