This issue tracks progress of changing the JIT from one that projects traces to one that records them.

Follow-ups:

• Embed ENTER_EXECUTOR's executor in the bytecode and on trace graphs?
• Do not increase chain depth when side-exiting a branch, as that is just normal control-flow.
• Optimize through CALL_ALLOC_AND_ENTER_INIT
• Specialize: CALL_FUNCTION_EX, __init__ of slots, SEND for yield from
• Loop peel.

Linked PRs

• gh-139109: Dynamic opcode targets #139111
• gh-139109: A new tracing JIT compiler frontend for CPython #140310
• gh-139109: JIT _EXIT_TRACE to ENTER_EXECUTOR rather than _DEOPT #141573
• GH-139109: Support switch/case dispatch with the tracing interpreter. #141703
• gh-139109: Add terminator to JIT code when halting due to invalid dependencies #143033
• GH-139109: Partial reworking of JIT data structures #144105
• gh-139109: Replace _CHECK_STACK_SPACE with _CHECK_STACK_SPACE_OPERAND in JIT optiimizer #144394
• gh-139109: Document the trace recording interpreter in internaldocs #146110