- c12: c3's reading held on both twins — the angle as the handler's first argument + tmp reused as the later operand;
the stale 'jalr with no args' comment corrected in the 135 files whose body now passes it
- c10: jump2 cross-jump merged two walk tails (exits now fall to the single final return), the s16 SUBREG gate, and
func_80135480 called at its real arity; its answer was func_80135888 in another file
- delever_pack related.txt: lever-free bodies in the overlay sharing a func_/D_ symbol, ranked (known-true: top hit for
func_80135A4C is func_80135888); METHOD_S103 +6 emitter entries; SETUP rows
- apply-body IDENTICAL x3, propagate 131/131 x2 + 133/133; check-all 218 passed 0 failed; lever_census 19,276 marked 0 UNMARKED
- closes, each --try 0 then apply-body IDENTICAL + propagate N/N 0 refused: func_80133AB0 (u16 width moves), func_80130D48
(one call per goto-tail site), func_80135168 (reused temps split + H16 member store), func_80134A74 (widths + join
statement in both arms), func_80148AFC (implicit handler argument + later operand), func_8015D738 (jump threading:
re-read + a do-while on precedent, the class raised with Drew), func_80135004 (temp split + argument from its global)
- func_8017EEC0: the uninitialised a0v T4 tus10 left is the parameter (8/8, IDENTICAL)
- CI red since cb2fb5e6d: verbatim_check --strict saw the DECOMPILE-NOW row func_8017EEC0 converted; row removed (one
row), --update keeps order + UTF-8 (proven equal to the hand fix), verbatim_check --strict now in make tools-health
- delever.split_reused_locals = family R23 (selftest + two refusals; known-true: joint split = the agents' measured 12/26)
- check-all 218 passed 0 failed (twice); lever_census 20,206 marked 0 UNMARKED; Drew: at most five concurrent agents
- agent c2 (Opus): a second pointer q = p + 5 stepped in lockstep with p kept a second biv alive (loop.c strength
reduction, -dL 'Cannot eliminate biv'); one pointer lets combine_givs fold every field read onto one base
- bank: apply-body IDENTICAL, propagate 130/130, check-all 218 passed 0 failed, lever_census 23,988 marked 0 UNMARKED
- delever.merge_walked_pointers = family R22 (selftest + two refusal controls; known-true: the agent's start text's
candidate is its closing body, --try score 0); leads the COUNT class after R19 in delever_search; SETUP row
- S103 opening: the method addendum .run/P36/agents/METHOD_S103.md; wave c launched (six agents); Fable out of credits,
c5/c6 relaunched on Opus
check-all: 218 passed, 0 failed of 218
lever_census --check: 24,119 pin/asm sites, 24,119 marked !FAKE, 0 UNMARKED — OK
Three moves, each predicted from a dump before it was compiled:
- while -> a guarded do-while (29 to 22). Cross-jump (jump.c:1969 -> find_cross_jump :2371, from toplev.c:3142) had
matched the load in front of the jump against the one in front of the bottom test and deleted three instructions; the
guarded form makes the two tails differ.
- the duplicated pre-loop call block -> goto (22 to 6). This is an allocno_compare rank move (global.c:585-611): the
priority is floor_log2(refs)*refs/live, reg_n_refs is loop-weighted (flow.c:2067), the in-loop copy of that call is
worth two references, and deleting the out-of-loop copy takes exactly one off — 8 to 7 crosses a floor_log2 step and
drops the pointer's priority from 3157.9 to 1891.9. The predicted allocation order matched the dump exactly. The
rewrite is byte-neutral on its own: reorg steals the target's first insn into the delay slot and retargets.
- the two-arm mask temp inlined (6 to 0): set in two arms it has two deaths, fails local-alloc.c:472, and combine_regs
bails at :1774, so it went to global allocation and took its copy preference.
Harvested as R21 second_consumer, from agents b2 and b6 together: give a computed value a second consumer before its
copy, either by chaining (v = slot = E) or by hoisting the store above it. cse deletes such a copy only when the
producer sits immediately before it (cse.c:7440-7501, guard :7454-7460), and flow links only the FIRST following use
(flow.c:2076-2091), so a store in between defeats both. R9 can never produce it — the two statements share the
identifier, so its independence guard refuses the swap. Known-true: the joint form scores 0 on b6's pre-bank text, and
the single-site forms do not, which is the third measured case this session of a joint edit no hill-climb can reach.
Also recorded from b8, worth a pre-check later: declaration-order moves are PROVABLY DEAD on a register residual whose
allocnos have distinct priorities, because global.c:604-610 compares priority first and only ties by allocno number —
4,811 compiles of those candidates sat flat because of it.
Drew T