f17b68ccfe
Profiling the test.check distribution/large-sample slowness (jolt-i5if): the hot path is the SplitMix PRNG, dominated by 64-bit mix arithmetic, and the bitwise ops (bit-and/or/xor/not, shifts) were NOT in the backend native-ops table — so (bit-xor a b) compiled to a var-deref through the variadic overlay (__bit-xor) instead of a direct call, the way +/-/* already emit. Map bit-and/or/xor/not to the Chez bitwise-and/ior/xor/not primitives (inlined to native code; a non-integer operand now errors like the JVM instead of being silently truncated) and the shifts to a direct helper call. bit-and-not stays on its overlay — its only Scheme impl is 2-arg, so a value-position arity-3 use would mis-emit. mix-64 arithmetic 2.7x faster, raw split+rand-long 2.4x, gen/vector ~1.4x. The remaining gap is the bignum-vs-native-long floor (~20x, substrate) plus the generator machinery (deftype/fn dispatch, separate). Corpus rows added for value position, bit-not, apply, and a full-64-bit unsigned shift. |
||
|---|---|---|
| .. | ||
| build-app | ||
| bench-chez.ss | ||
| clojure-test.clj | ||
| corpus.edn | ||
| directlink-test.ss | ||
| ffi-binding-test.ss | ||
| inline-test.ss | ||
| numeric-test.ss | ||
| README.md | ||
| transient-test.ss | ||
| unit.edn | ||
| values-test.ss | ||
Chez test harness
The correctness gate for jolt. Pure Chez (+ Clojure for the JVM oracle).
Correctness is judged against the JVM-sourced conformance spec; the spec itself
lives in test/conformance/ (see its SPEC.md). Run the whole gate with make test from the repo root.
The spec corpus
corpus.edn is the contract: ~2920 rows {:suite :label :expected :actual}, with
:expected sourced from reference JVM Clojure by test/conformance/regen-corpus.clj.
It is frozen (the canonical source) — add or change cases here, then re-source the
answers with regen-corpus.clj and re-certify with test/conformance/certify.clj.
The gate runners (host/chez/)
-
run-corpus.ss— runs every corpus case through the spine (read → analyze → IR → emit → eval, all on Chez), comparing each result by value-equality against the JVM:expected. Aknown-failallowlist covers cases jolt can't match because Chez has no JVM host (Java classes, arrays,BigDecimal, opaque host-object printers, …); the gate fails only on a NEW divergence or if the pass count drops below the floor.chez --script host/chez/run-corpus.ss JOLT_CORPUS_LIMIT=200 … # every-Nth stride, fast iteration JOLT_CHEZ_ZJ_FLOOR=N … # override the floor (default 2678) -
run-unit.ss— host-specific unit cases (test/chez/unit.edn) that aren't in the JVM-portable corpus: dot-forms, java statics, io, reader, walk, vars/namespaces, refs. Each:expris evaluated in-process and its printed value compared to a baked:expected(:throwsasserts a raise). -
selfcheck.sh— self-host fixpoint:bootstrap.ssrebuild byte-equals the checked-in seed (host/chez/seed/). -
smoke.sh— realbin/joltc -eCLI smoke.
Other Chez tests
values-test.ss— the value model (nil/truthiness/collections).make values.bench-chez.ss— compute bench through the pipeline (opt-in; not in the gate).
All runners assume chez on PATH.