jit: add the generatorentry driver (jd2) for generators with two or more yields - #1950
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. WalkthroughAdds generator-entry tracing and compiled execution. Eligible generator resumes can enter a JIT portal, and traced generator calls can use a residual-call path. The change also adds pointer/integer cast tracing and updates related JIT support and benchmark statistics. ChangesGenerator-entry JIT
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant GeneratorResume
participant GeneratorEntryPortal
participant GenEntryMergePoint
participant GeneratorJIT
GeneratorResume->>GeneratorEntryPortal: resume eligible generator
GeneratorEntryPortal->>GenEntryMergePoint: pass pycode, gen, and w_arg
GenEntryMergePoint->>GeneratorJIT: trace or run compiled cell
GeneratorJIT-->>GenEntryMergePoint: return result or exception
GenEntryMergePoint-->>GeneratorEntryPortal: return optional result
Merge Risk: 🟡 Moderate · up to This change adds JIT execution for generators. Several open issues could crash, resume a generator twice, or delay generator cleanup. Resolve them before merging. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The new execution path preserves several important safeguards, but a compiled-code fallback may not restore an in-progress generator to a state the interpreter can resume. This warrants design review; no privilege escalation was established. Retained concerns
Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
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Full details: Docstring CoverageExplanation Docstring coverage is 61.29% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 31 functions across 6 files. (8 skipped: 1 unsupported, 7 too large.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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| let mut fnaddr_bindings = pyre_interpreter::jit_trace_fnaddrs(); | ||
| // `dont_look_inside` residuals the portal walk still executes. | ||
| // Unbound, each one is a symbolic path hash and | ||
| // `refuse_reachable_symbolic_residuals` aborts the trace. | ||
| fnaddr_bindings.extend(pyre_interpreter::baseobjspace::generatorentry_fnaddrs()); |
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generatorentry_fnaddrs() is appended only to the build-script bindings; its new paths are absent from jit_trace_fnaddrs(), which runtime_fnaddr_patch queries in the executable. When the jd2 portal jitcode is loaded in a normal runtime process, those build-only addresses are classified as unpaired and zeroed, so its residual calls decline/abort rather than invoking generator_send_ex_body and the related helpers. Add the same entries to the runtime registry (or make the registry share this source) so the build-to-runtime address patch can re-pair them.
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Not taken in this round, on purpose. generatorentry_fnaddrs() binds the paths the jd2 portal walk descends into (generator_send_ex_body, generator_invoke_execute_frame, ...) plus the dont_look_inside error helpers; today none of them is ever emitted as a residual call, because the walk aborts at the __dyn_call residual inside execute_generator_frame before any of those call sites is reached, so the zeroed runtime address is inert. Publishing them to jit_trace_fnaddrs() would mean binding Rust-ABI functions (5 arguments, Result sret) under a word-ABI residual registry, which is the unsound-alias class the registry's cp* helpers exist to prevent; a hand-written word shim under the same path would only hide the ABI mismatch. The runtime pairing gets added together with the residual lowering that makes those calls real, with C-ABI trampolines whose signatures match what the codewriter records. Tracked with the "Next peel" item in the description.
— commented by Claude
| meta.abort_trace(false); | ||
| if dbg { | ||
| eprintln!("[jd2] abort_trace"); | ||
| } | ||
| return Some(finish_generatorentry_after_walk_abort(pycode, w_gen, w_arg)); |
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For the documented jd2 __dyn_call/symbolic-residual path, this aborts the trace and manually undoes state before replaying the generator in the interpreter. Thus every hot multi-yield generator continues to take the abort/retrace path rather than compiling its generator-entry body (the commit reports hundreds of such aborts), and the rollback is a second implementation of activation cleanup. Lower the residual and let the walker reach the generator frame merge point instead of retaining this fallback.
AGENTS.md reference: AGENTS.md:L67-L73
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Agreed that the abort-undo is not the end state; the PR description files it as the open item. The walk stops at the __dyn_call residual of execute_generator_frame (the registered eval is an indirect call), so the next peel is lowering that indirect call so the jd2 walk reaches jd0's merge point inside the generator frame and opimpl_jit_merge_point's recursive-portal arm handles it. Until that lands, the fallback only keeps the answer correct (without it the restart raised ValueError: generator already executing); it is gated to aborts before the frame body ran in the follow-up push, and it goes away with the lowering. Tracked in the description under "Next peel".
— commented by Claude
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Inline comments:
In `@majit/majit-metainterp/src/pyjitpl.rs`:
- Around line 19662-19706: Extract the shared assembler-token creation flow from
get_or_make_jitdriver_assembler_token_arc and
get_or_make_portal_assembler_token_arc into a private helper that accepts the
resolved driver data. Keep each public method’s existing driver-resolution
behavior, and pass the appropriate log tag so the shared helper preserves their
distinct logging.
In `@pyre/pyre-interpreter/src/baseobjspace.rs`:
- Around line 20851-20873: Update generatorentry_portal and jit_merge_point
handling so a completed resume returning None is distinguishable from a bailout,
preventing generator_send_ex_body from resuming it twice. Root gen_obj and w_arg
before the hook and reload both from their root slots before passing them to
generator_send_ex_body.
- Around line 20953-20957: Update generator_send_ex_body to pin frame_ptr only
through an ownership-aware root path that confirms it is GC-managed; do not
publish unmanaged frames as GcRef through pin_root or FrameAnchor. Preserve
rooting for GC-owned frames.
In `@pyre/pyre-jit-trace/src/jitcode_dispatch/inline_call.rs`:
- Around line 12904-12906: Update the `ResidualExecOutcome` match in the
generator walk to preserve the exception returned by `Executed(Err(exc))`
instead of discarding it. Use that carried exception to record and return
`DispatchOutcome::SubRaise`, rather than reading the consumed
`BH_LAST_EXC_VALUE` TLS slot; keep successful execution and declined-call
behavior unchanged.
In `@pyre/pyre-jit/src/eval.rs`:
- Around line 7946-7963: Update genentry_counter_tick to maintain an independent
warm-up count for each green_key instead of resetting one shared KEY/N pair when
keys alternate. Use the existing per-key warmstate jitcounter if available, or a
keyed counter map, and preserve the threshold-triggered reset behavior for each
key.
- Around line 8316-8318: Remove the early return from the
`drain_error_from_exc_ref` guard-exception branch so non-`StopIteration`
exceptions proceed through `resume_in_blackhole_from_exit_layout`; preserve
propagation of the exception through the portal jitcode’s `catch_exception` and
`finally` handling.
- Around line 8215-8235: Update finish_generatorentry_after_walk_abort to retry
generator_send_ex_body only when the abort’s JIT code position proves the frame
body has not started; otherwise, blackhole to completion without resuming the
generator again.
- Around line 7921-7933: Use a jd2-scoped cell key throughout generator-entry
compilation and execution. Update the lookup in jitcell_is_compiled and carry
the resolved key through force_start_tracing and
run_compiled_detailed_with_values, without reusing the unqualified jd0 key.
- Around line 8236-8237: In the generator-send abort helper, root and reload
w_gen and non-null w_arg before calling w_generator_is_running; use the reloaded
values for the running-state cleanup and generator_send_ex_body, preserving
null-argument handling.
- Around line 8124-8152: Update run_compiled_generatorentry’s terminal-result
handling to use BlackholeResult::take_pyresult() for DoneWithThisFrame results,
boxing void, integer, and float values instead of falling through as None. Treat
zero or non-Ref FINISH values as invalid terminal states; preserve
BailToInterpreter’s interpreter fallback and CloseLoop’s merge-point behavior.
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majit/majit-metainterp/src/pyjitpl.rsmajit/majit-metainterp/src/pyjitpl/dispatch.rspyre/bench/synth/generator_tree_recursion.jitstatspyre/pyre-interpreter/src/baseobjspace.rspyre/pyre-interpreter/src/call.rspyre/pyre-interpreter/src/jit_fnaddr.rspyre/pyre-jit-trace/build/prepass.rspyre/pyre-jit-trace/src/genentry_state.rspyre/pyre-jit-trace/src/jitcode_dispatch/inline_call.rspyre/pyre-jit-trace/src/jitcode_dispatch/residual_call.rspyre/pyre-jit-trace/src/lib.rspyre/pyre-jit-trace/src/state.rspyre/pyre-jit-trace/tests/walker_opcode_parity.rspyre/pyre-jit/src/eval.rs
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| static GENENTRY_BODY_FINISHED: std::sync::atomic::AtomicBool = | ||
| std::sync::atomic::AtomicBool::new(false); | ||
| static GENENTRY_BODY_GEN: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0); | ||
| static GENENTRY_BODY_WORD: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0); | ||
| static GENENTRY_BODY_IS_ERR: std::sync::atomic::AtomicBool = |
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In a free-threaded run, each mutator has its own JIT_DRIVER, so jd2 walks can overlap with generator execution on another thread. Every generator_invoke_execute_frame writes this one process-global record; if thread B overwrites thread A's note after A's generator body has returned but before A reaches finish_generatorentry_after_walk_abort, genentry_body_result_for(A) misses and the fallback calls generator_send_ex_body a second time on A's already-resumed generator. That can skip a yielded value or turn the call into an unexpected StopIteration; retain this state in the active driver/session or thread-local execution context instead.
AGENTS.md reference: AGENTS.md:L147-L153
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Done: the note is no longer process-global. genentry_resume_note_finished/is_err/gen/word are fields of ExecutionContext (one per mutator, next to pending_loop_exit), written by generator_invoke_execute_frame's finally through the current thread's EC and read by finish_generatorentry_after_walk_abort from the same EC, so another thread's resume cannot overwrite it. The two refs are visited in walk_builtin_roots, which also closes the unrooted-word gap the earlier atomics had.
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| let gen_null = gen_obj.is_null(); | ||
| let gen_slot = pyre_object::gc_roots::shadow_stack_len(); | ||
| if !gen_null { | ||
| let _ = pyre_object::gc_roots::pin_root(gen_obj); | ||
| } |
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generator_unpack_into keeps one root bracket open while repeatedly calling this function and later reads produced contiguous slots starting at results_base. Each invocation now appends this generator pin (and the non-null w_none input pin below it) to that caller-owned bracket, while frame_anchor_release only removes the later frame slot. Consequently, after the second yield the slots are interleaved with retained generator/input roots, so results.extend(...) reads the generator and None entries instead of only yielded values; it also grows the shadow stack for every yielded item. Restore a per-invocation cleanup boundary without making the traced portal depend on an unlowered RootScope return.
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Confirmed and fixed. f(*gen()) reproduced it: collect(*five()) returned (<generator>, None, 10, <generator>, None) in the interpreter path. generator_invoke_execute_frame now records the root stack length on entry (shadow_stack_cell_len) and truncates back to it (shadow_stack_cell_truncate) on both exits, after frame_anchor_release; both are registered word-ABI residuals, so the traced portal body keeps no RootScope value. call_ex_generator_unpack_regression is added to the synthetic suite for the unpack_into path.
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Inline comments:
In `@majit/majit-metainterp/src/pyjitpl.rs`:
- Around line 19627-19634: Update the doc comment for
assembler_token_arc_for_driver to describe greenboxes and red_arg_types
generically as values and types matching target_sd’s green/red specification and
declaration order; remove the portal-only layout details from this helper’s
documentation.
In `@majit/majit-metainterp/src/pyjitpl/dispatch.rs`:
- Around line 11895-11936: Add a debug assertion that bits is odd in both
trace_cast_ptr_to_int and trace_cast_int_to_ptr, matching the invariant enforced
by their blackhole counterparts; keep each check immediately after reading the
source register.
In `@pyre/pyre-interpreter/src/baseobjspace.rs`:
- Around line 20509-20523: Scope genentry_resume_note_finish to jd2 walks by
recording the note only when the walk has armed it; clear the note fields when
the abort fallback consumes them and when the walk finishes.
- Around line 20514-20518: Update the `raised` handling so `to_exc_object`
materializes the exception on the stored error rather than on a discarded clone;
use mutable access to the `Some(err)` value and preserve the existing null-check
behavior for an already-materialized exception.
In `@pyre/pyre-jit-trace/build/prepass.rs`:
- Around line 1191-1195: Ensure generator-entry function-address rows are
included in the runtime registry used by patch_constants_i_fnaddrs, not just the
build-time fnaddr_bindings in the prepass. Add generatorentry_fnaddrs() to
build_jit_trace_fnaddrs() or merge its rows into the runtime result before
constructing the correspondence, so generated code uses runtime-process
addresses.
In `@pyre/pyre-jit/src/eval.rs`:
- Around line 7561-7565: Update the exception-exit handling in the
TraceAction::Finish match so an absent exc_value produces a runtime error rather
than None; this ensures generatorentry_ll_portal_runner treats the resume as
handled and does not run the generator body again. Match the invalid-state
behavior in run_compiled_generatorentry.
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majit/majit-metainterp/src/pyjitpl.rsmajit/majit-metainterp/src/pyjitpl/dispatch.rspyre/gate-triage.mdpyre/pyre-interpreter/src/baseobjspace.rspyre/pyre-interpreter/src/call.rspyre/pyre-interpreter/src/executioncontext.rspyre/pyre-interpreter/src/jit_fnaddr.rspyre/pyre-jit-trace/build/prepass.rspyre/pyre-jit-trace/src/genentry_state.rspyre/pyre-jit-trace/src/jitcode_dispatch/inline_call.rspyre/pyre-jit-trace/src/jitcode_dispatch/residual_call.rspyre/pyre-jit-trace/src/state.rspyre/pyre-jit/src/eval.rs
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…ore yields `generator.py generatorentry_driver` (greens `pycode`, reds `gen`, `w_arg`) is registered as `jitdrivers_sd[2]`. `send_ex` is split at the merge point into `generatorentry_portal(pycode, gen, w_arg)` (baseobjspace.rs); the caller's walk records `CALL_ASSEMBLER` to the cell's `compile_tmp_callback` token and `ll_generatorentry_portal_runner_shim` is its runner. `GenEntryJitState` / `GenEntrySym` (genentry_state.rs) carry the two red refs; `handle_jitexception` for the driver is `generatorentry_portal_runner` (portal runner hook 2). The walk from the merge point currently aborts at the `__dyn_call` residual of `execute_generator_frame` (symbolic, arg classes `irr`); on that abort `finish_generatorentry_after_walk_abort` undoes the `w_generator_set_running` / execution-context link the walk already published and finishes the body once in the interpreter. Residuals peeled on the way: `recursion_state_get`/`recursion_state_set` are field accesses (`getfield_raw`/`setfield_raw`) instead of `ptr::read`/`write`, and `majit_gc::bh_probe_note_store` is registered as a word-ABI residual. The walker gains `cast_ptr_to_int`/`cast_int_to_ptr` handlers. The portal runner's `Ok` path clears the residual exception cell so the caller's `GUARD_NO_EXCEPTION` after `CALL_ASSEMBLER` stays green. A two-yield fixture (N=200000) prints the same result as CPython; jit-stats `loops_compiled=1 loops_aborted=992 guard_failures=198898`, 1.57s user vs pypy 0.03s, so no fixture is added. `generator_tree_recursion.jitstats` `loops_aborted` 1 -> 6: the five extra aborts are the jd2 walks of its two-yield `gen_values` stopping at the `__dyn_call` residual before the abort ceiling bans the key (`abort_ceiling_banned`); loops, bridges and guard failures are unchanged. `spec_folds!` rows 105 -> 105, `try_walker_specialize_` functions 89 -> 89. Review round: the jd2 cell key is resolved on the process warmstate for driver 2 (`genentry_resolved_cell_key`) and the warm-up tick goes through that driver's own `JitCounter`; `run_compiled_generatorentry` boxes `DoneWithThisFrameRef/Void/Int/Float` through `take_pyresult()` and a guard exit carrying an exception unwinds through the blackhole instead of an early `Err` return; `finish_generatorentry_after_walk_abort` opens its root scope before reloading `gen`/`w_arg` and returns the body's result when the body already ran (`genentry_resume_note_finish` from `generator_invoke_execute_frame`; the note is four `ExecutionContext` fields, per thread, its two refs walked with the EC roots); `generator_send_ex_body` pins the frame only when the collector owns it; the caller-side `descend_generatorentry` runs `jit_next` through `try_execute_residual_call_via_executor` and carries the executor's exception word; `get_or_make_portal_assembler_token_arc` / `get_or_make_jitdriver_assembler_token_arc` share `assembler_token_arc_for_driver`. A `FINISH` exception exit that carries no exception returns a RuntimeError instead of `None` (which would resume the generator again). `PYRE_JD2_DEBUG` is listed in `pyre/gate-triage.md` as a diagnostic (`gate_triage_complete` test). `generator_invoke_execute_frame` truncates the root stack back to its entry length on both exits (the bracket it no longer opens as a `RootScope`), so `unpack_into`'s per-yield reads from `results_base` see only yielded values; without it `f(*gen())` returned the generator and the resume value in place of yields. `call_ex_generator_unpack_regression` guards that path. The resume note is armed only for the duration of a jd2 walk and cleared when consumed or when the walk returns, so the interpreter holds no generator or result on the EC; the note's exception is materialized on the returned error itself. The trace path's exception `FINISH` without an exception is the same RuntimeError as the compiled path's. `generatorentry_fnaddrs()` stays a build-time identity list: none of its paths is emitted as a residual call yet, so no runtime shim is registered for them. wasm32: an unbound symbolic residual target (`stable_symbolic_fnaddr`, the `SYMBOLIC_FNADDR_BASE` high-16-bit tag) reached the walker as an i64 word and was narrowed to a 32-bit pointer before `is_symbolic_fnaddr` was consulted, so the tag was gone; the `__dyn_call` residual then ran through the host trampoline, which answers 0 for a slot holding no function, and the jd2 walk reached `FINISH` with a null constant (`generator_tree_recursion` CRASH on the wasm leg). The symbolic check now runs on the whole word before the pointer is built, so the walk aborts on wasm32 the way it does natively. wasm jit-stats baselines: `pickle_terminal_raise_resume.wasm.jitstats` is removed, its observed wasm counts (`loops_aborted=4 loops_compiled=24 guard_failures=139`) are the shared `.jitstats`; `gc_pypy_frontend.wasm.jitstats` `guard_failures` 331 -> 375. Both files were red on main's own CI at 17c8884 (373 there, 4/24/139 identical) before this branch was rebased onto it. rtyper skip-subject ratchet (`majit/rtyper-skip-subjects.*.txt`): the jd2 portal adds a second driver closure to the two-phase prepass. Eight graphs in it fail Phase A and are recorded as `two-phase-never-a-subject`: `generatorentry_portal` (the driver hook receiver, the same class as `eval_loop_jit_portal` / `unpackiterable_portal`); `pyframe::execute_generator_frame` and `generator_invoke_execute_frame` (the eval function pointer call returns `PyResult`, which the annotator's `SomePtr(Func)` call arm rejects — the `__dyn_call` lowering named as the next peel); `leak_generator_iteration`, `PyError::chain_exceptions`, `chain_exceptions_from_cause`, `record_context`, `set_cause` (source lifts of `to_exc_object`, `chain_context`, `exception_is_valid_class_w` fail; pre-existing, newly reached through this closure). `get_eval_fn` no longer skips: both arms produce the address word before one transmute, so the annotator sees no `Ptr(Func) ∪ Integer` merge. The darwin file is otherwise refreshed to the current darwin corpus (`--update`): the other 26 additions and 20 removals (`callable_w`, `is_iterable`, `os_error_from_parts`, `deque_len`, `interp_kqueue::close`, ..., `recursion_state_get` and the SWAP opcode graphs leaving) are main's drift since the file was last written (#1943); CI enforces the linux file only. The linux file is written from this head's CI census artifact (`rtyper-skip-subjects-Linux-X64`, corpus 719de49efe998d13): 33 additions, the eight jd2 graphs above plus the 25 that main's own dispatcher-graph run at 17c8884 already reports as unattributed (`os_error_from_parts`, `chain_context`, `deque_len`, ...), and 12 removals. Assisted-by: Grok 4.6 Assisted-by: Claude
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Summary
Adds
generator.py generatorentry_driverasjitdrivers_sd[2](jd2) so a generator body thatshould_not_inlinerefuses to inline (two or more yields) gets its own portal instead of staying a residual call from the caller's loop. Follow-up to #1912 / #1936.send_exsplit at the merge point intogeneratorentry_portal(pycode, gen, w_arg)(split_before_jit_merge_pointshape); the caller's walk recordsCALL_ASSEMBLERto the cell'scompile_tmp_callbacktoken;ll_generatorentry_portal_runner_shimis thell_portal_runner,generatorentry_portal_runnerthehandle_jitexception(portal runner hook 2).GenEntryJitState/GenEntrySym(genentry_state.rs): greenspycode, redsgen,w_arg, no virtualizable.recursion_state_get/recursion_state_setare now field accesses (lowered togetfield_raw/setfield_raw) instead ofptr::read/write;majit_gc::bh_probe_note_storeregistered as a word-ABI residual; the walker gainscast_ptr_to_int/cast_int_to_ptrarms (opimpl_cast_ptr_to_int/opimpl_cast_int_to_ptr), and the two keys move out of the opcode-parity snapshot's PYRE_ONLY list (both tracers walk them now).descend_generatorentryruns its concretejit_nextthroughtry_execute_residual_call_via_executorlikeemit_walker_loop_callee_call_assemblerdoes; a raw call left the callee frame seeded as the walk's virtualizable and the next snapshot wrote past the caller'slocals_cells_stack_w(generator_tree_recursionpanicked underMAJIT_STRICT=1). The portal body keepsexecute_generator_frame, so loops inside generator bodies still compile (a plain-eval detour in the WIP had silenced them).Okpath clears the residual exception cell so the caller'sGUARD_NO_EXCEPTIONafterCALL_ASSEMBLERstays green.State (incomplete, stated plainly)
The jd2 walk from the merge point still aborts at the next symbolic residual, the
__dyn_callresidual ofexecute_generator_frame(arg classesirr), i.e. before it reaches the bytecode loop's own merge point. On that abortfinish_generatorentry_after_walk_abortundoes thew_generator_set_running/ execution-context link the walk already published and finishes the body once in the interpreter, so the answer is correct (before this the restart raisedValueError: generator already executing).Two-yield fixture (
forover a generator with twoyields, N=200000), dynasm, local:loops_compiled=1 loops_aborted=992 guard_failures=198898The
loops_aborted=1000are the caller loop's bridge re-traces after theGuardNoExceptionfailure that follows the secondCallAssemblerR; they go away once the jd2 cell compiles. Because of that ratio the fixture is not added topyre/bench/synth(nomax-pypy-ratioraise); it is kept in the commit message as the reproduction.Next peel (not in this PR): lower the registered-eval indirect call (
__dyn_call) so the walk reaches jd0'sjit_merge_pointinside the generator frame and is handled as a recursive portal call; then blackhole-adopt on jd2 abort instead of the undo path.Review round
CodeRabbit: cell key resolved on the driver-2 warmstate, per-key warm-up counter,
DoneWithThisFrame*boxed viatake_pyresult(), guard-exit exceptions unwound through the blackhole, rooted-first abort fallback that returns the body's result when the body already ran (the note lives on the per-threadExecutionContextand its refs are EC roots), frame pin gated on collector ownership, executor-routedjit_nextwith the exception word carried, sharedassembler_token_arc_for_driver. Declined with reasons in-thread: moving the root bracket before the merge point (the hook is the split point) and registering runtime shims forgeneratorentry_fnaddrs()paths that are never emitted as residual calls.Codex round 2: the resume note moved onto the per-thread
ExecutionContext;generator_invoke_execute_frametruncates the root stack to its entry length on every exit, restoring the per-invocation cleanup the removedRootScopeprovided —f(*gen())(unpack_into) had been reading the generator andNonepins back as yielded values. New fixturecall_ex_generator_unpack_regressionguards it. CodeRabbit round 3: the note is armed only during a jd2 walk and cleared after it; the exception is materialized on the returned error; the trace path's empty exceptionFINISHerrors like the compiled path's. Declined: mirroring the blackhole's odd-word assertion in the tracer (the jd2 walk casts real pointers) and publishinggeneratorentry_fnaddrs()runtime shims (see the Codex thread).CI
cargo test:gate_triage_complete—PYRE_JD2_DEBUGadded topyre/gate-triage.md.pyre/check.py cranelift/dynasm (windows):sre_pattern_gc_lifetimeandgc_is_finalized_reports_a_resurrected_object— the resume note of the previous head kept the last resumed generator (any(... for obj in gc.get_objects()), the resurrecting generator) and its result alive on the EC, so the pattern stayed tracked and the finalizer never ran; the note is now armed only during a jd2 walk and cleared after it.dynasm (ubuntu)wasm leg:synth/generator_tree_recursionCRASHgeneratorentry finish value is not a ref— an unbound symbolic residual target (__dyn_call) was narrowed to a 32-bit pointer before theSYMBOLIC_FNADDR_BASEtag check, so on wasm32 the walk ran it through the host trampoline (which answers 0 for an empty slot) and reachedFINISHwith a null constant. The symbolic check now runs on the whole i64 word before the pointer is built; the jd2 walk aborts on wasm32 as natively.dynasm (ubuntu)wasm leg, jit-stats:gc_pypy_frontend331 → 375 guard failures andpickle_terminal_raise_resume3 → 4 aborts / 21 → 24 loops fail on main's own CI at 17c8884 with the same numbers (373 for the first). The pickle wasm file now equals the shared baseline and is removed; the gc_pypy_frontend wasm file is re-recorded at 375.cranelift (ubuntu):exception_reraise_tb_depth_hot4.4x against its 4x gate on one run. The fixture sits on the gate on main (3.9x, 4.1x on the last two main runs; 4.0x on this PR's previous head). Instructions retired, three runs each, main 17c8884 vs this head: 6.35–6.78G vs 6.35–6.49G, no difference; the fixture has no generator. Not re-gated; the job is re-run.synth/exception_reused_object_tb_not_doubled(dynasm ubuntu CRASH),test.test_email(rutf8 index out of bounds) and the linux rtyper ratchet (25 unattributed additions,os_error_from_parts…); those show up on this PR's runs too.dispatcher-graph acceptance: rtyper skip-subject ratchet — the jd2 portal closure adds eighttwo-phase-never-a-subjectgraphs (portal hook receiver;__dyn_callreturn annotation;error.rssource lifts) and pays twelve off;get_eval_fnfixed to a singlePtr(Func)arm. Attribution in the commit message; the linux baseline is refreshed from this PR's CI census (it carries main's 25 drift additions as well, since main's copy is stale). Rebased onto main 17c8884; conflicts inbuild/prepass.rs(fnaddr bindings comment) andpyre-jit-trace/src/lib.rs(walker_float_helper_addrsremoved on main) resolved.Verification
cargo test --release -p pyre-jit-trace: all green after the snapshot move.python3 pyre/check.py --backend dynasm --synthetic-only(local, macOS): 554/554 after one attributed baseline change.generator_tree_recursion.jitstatsloops_aborted1 → 6: the five extra aborts are the jd2 walks of its two-yieldgen_valuesstopping at the__dyn_callresidual before the abort ceiling bans the key; loops (3), bridges (34) and guard failures (4606) are unchanged, and the fixture stays under its ratio gate.spec_folds!rows 105 → 105,try_walker_specialize_functions 89 → 89.🤖 Generated with Claude Code