feat(jit/aot): native OP_PARMAP Cranelift path (ILO-353)#692
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danieljohnmorris merged 1 commit intoMay 22, 2026
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Add `jit_parmap` extern "C" helper and wire OP_PARMAP into both the JIT (jit_cranelift.rs) and AOT (compile_cranelift.rs) Cranelift backends so par-map no longer falls through to the VM interpreter. - `jit_parmap(fn_bits, xs_bits, concurrency_or_sentinel) -> result_bits` mirrors the VM's OP_PARMAP dispatch arm: resolves FnRef / closure / text callees, fans out over scoped worker threads, returns L(R _ t). - Both HelperFuncs structs gain a `parmap: FuncId` field declared as `jit_parmap` with signature (i64, i64, i64) -> i64. - JIT register helpers table registers the symbol. - OP_PARMAP arms added to both codegen dispatch loops; data word consumed at compile time via `skip_next = true` matching OP_POSTH pattern. - OP_PARMAP added to `find_block_leaders` 2-word skip list so its data word bytes are never mis-decoded as opcode leaders. - OP_PARMAP added to non_num_write classification lists and the two prepass/fixpoint data-word-skip guards in both codegen files. - All 8 existing op_parmap_* unit tests pass; zero regressions. Extends ILO-352 (#688) / ILO-67 (#610). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
jit_parmapextern "C" helper that mirrors the VM'sOP_PARMAPdispatch arm: resolves FnRef/closure/text callees, fans out overstd::thread::scopeworkers, returnsL(R _ t)in input orderOP_PARMAPinto both Cranelift backends (JIT:jit_cranelift.rs, AOT:compile_cranelift.rs) — par-map no longer falls through to the interpreter on these pathsskip_next = true(same pattern asOP_POSTH);find_block_leadersupdated to skip it as a 2-word instruction; prepass/fixpoint classification loops guarded accordinglyTest plan
op_parmap_*unit tests pass (cargo test --features cranelift op_parmap)--features craneliftcargo build --features craneliftExtends ILO-352 (#688) / ILO-67 (#610).
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