- 48 atlas mass cards on ov_SC02_000 with --min-ins 40: 45/48 shape-verified, 42 banked,
ONE gate group. stubs 11,549 -> 11,477. distinct-code 90.4%.
- the band question is answered: 94% draft at avg 65 ins (up to 119), after 98% at avg 51 in
wave M. The mass lane is NOT size-limited in the band the instruction-weighted metric tracks.
- 2 NEARs enqueued with unusually deep analyses, both reusable beyond their own functions:
* func_80189C6C (close=2): magic 0x66666667 + mfhi-shift 5 DECODES to a plain /80 — write
'(x<<12)/80' and let gcc synthesize its own magic multiply. Residual root-caused against
REAL cc1 -da RTL dumps to loop.c move_movables desirability (threshold 29 vs measured
insn_count 24-26). Matches the func_80015A74 hard-tail class.
* func_80185840 (close=3): 'register u32 zr __asm__("$0"); c = val + zr;' reproduces the
non-coalescing addu-zero copy that cookbook §52a had classified as a WALL; plus 'r = K;'
before a SINGLE-armed if is what lets reorg's backward scan steal the li into the delay
slot (any two-arm spelling needs the eager target-thread steal, which never fires).
Drew T
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