--- every @class/@stuck/@crack note in this translation unit ---
// @class: schedule
// @stuck: none — MATCH (102 ins). MATRIX(0x20:m@0,t@0x14)+SVECTOR in/out stack layout; the only
// @class: struct
// @stuck: none — MATCH (fn-ptr table %lo-fold via extern array of code ptrs)
/* @class: instruction-scheduling (SOLVED — natural statement order)
// @class: loose-typing
// @stuck: none — MATCH (99 ins). short* for param_2/param_3: gcc emits lh where sign is live (<<1 for signed div), lhu where truncated to short (arith result / direct copy)
