a2ce6bb5f6
Probes the ceiling and incremental strategy for compiling hot fns to native C, the only lever that moves the ~10.8x Janet-VM floor the localization spike found. Native-C mandelbrot (Janet native module) runs ~10-12ms — faster than JVM Clojure (14.2ms) and ~18-22x faster than jolt's 219ms. The boundary cost is asymmetric: a bytecode loop calling a C hot-fn 40k times is nearly free (~11ms), but a C fn calling back into bytecode via janet_call costs ~3.5us/call (~152ms, no win). So the strategy is leaf-first / whole-hot-cluster compilation, crossing only at cold edges. A plain cc-built .so (no jpm) loads at runtime via require at full speed, so the native tier fits jolt's dynamic compile model. Adds the spike artifacts under spike/native/ and the writeup. Next step is jolt-ihdp (IR->C for the numeric subset). No source changes. Co-authored-by: Yogthos <yogthos@gmail.com>
6 lines
106 B
Text
6 lines
106 B
Text
(declare-project
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:name "mandel-native-spike")
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(declare-native
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:name "mandel"
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:source ["mandel.c"])
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