shrink the binding for optimized clean builds - #64
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Building a large project with optimizing compiler flags spent most of its time compiling the generated C binding. Every ordinary array argument emitted the whole sequence inline -- validate the ndarray, check each declared extent, take the data pointer, fold the trailing axes, and on the other branch build an expected-shape tuple for the native-handle handoff. The logic is identical at every site; only the dtype, rank, layout, extents, and names differ. The reference BLAS repeated it 200 times, so the compiler optimized the same shape 200 times over. A wrapper now passes those differing values to one prik_bind_array helper and receives the pointer and extents back, so the logic is optimized once. Plans that also carry runtime rank, itemsize, stride, upper-bound, or dense-actual roles keep their own inline sequence, as do strings, front-flattened storage, and any argument whose direct and handoff routes disagree on an axis. Bindings are also no longer split across translation units. A project of 128 or more procedures previously generated <module>_wrapper_001.c and siblings so those units could compile concurrently. Splitting never reduced the work: each unit re-parsed Python.h and the NumPy headers, which measured as a 14% rise in total compiler time, repaid only when cores sat idle. A project's own sources rarely leave them idle, and on a four-core machine the split lost outright. One file also leaves one file to read when inspecting generated output. For the 155-source reference BLAS with -O3 -march=native, the binding emits a third less code and its compile drops from 5.77s to 4.16s. A 150-procedure project that did split goes from six units and 5.87s to one unit and 2.54s. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QDeRuWHDwVLK8aeQARe3iT
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