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Drew T
ce8f7629ae
Scope enumerated before acting: cse_expr.md, loop.md, sched.md (full pass — T33 landed only a partial), t7g-giant-harvest.md. 35 agents (9 derive + 26 adversarial refute), 2.48M subagent tokens. 308 findings: 174 CONFIRMED / 99 LINE-DRIFT / 26 REFUTED raised -> 20 UPHELD, 6 OVERTURNED / 9 unverifiable. cse_expr.md had the highest error density (17 refuted of 74); loop.md the lowest (3 of 96) thanks to its pre-existing caveat table. 12 FABRICATED (vs 0 last audit) — DIAGNOSED, not waved through: the agents pasted MAP text into the source_quote field instead of compiler source. All 12 are CONFIRMED-status and none underpins an upheld refutation, so nothing was deleted on bad evidence — but they are UNVERIFIED, they sit in loop.md's biv-elimination area, and loop.md now records that as an open gap rather than a pass (R32). Headline corrections: - cse_expr: THE 1000-INSN CSE FLUSH DOES NOT EXIST IN 2.7.2 (added in 2.8.1; grep num_insns -> no hits). It drove THREE places — §1's killer table, §6's giant tell, §7's "shift +-insns across the 1000 boundary" lever. A lever aimed at a counter our compiler lacks, in exactly the giants this map serves. All struck. - cse_expr: §2's "kill THE class reg" is singular and wrong. The audit BYTE-REPRODUCED T31's wall on the pinned cc1: expand_block_move (mips.c:2350-2351) copy_addr_to_reg's BOTH aggregate addresses. Two byte-proven remedies recorded, with the caveat that field-by-field copy is closed when the target's own bytes need the block move (func_80132F40's case). - cse_expr: assign_temp absent in 2.7.2 and no /s reset on slot reuse (recycled slots INHERIT /s); no BUILT_IN_MEMSET; §6's "recompute after a join is never a residual" false at -O2. - sched: S7's EPILOGUE half false (no live define_expand "epilogue" on MIPS) — re-scoped not deleted; insn_cost is DEP-KIND-BLIND so restoring /s anti edges is not free. - loop: "no memory load is EVER hoisted from a loop containing a call" FALSE — invariant_p checks RTX_UNCHANGING_P first; byte-proven that a const int* load hoists to the preheader. Call args are emitted LEFT-to-right, not right-to-left. Remaining: matching-cookbook.md (~52 citations, MIXED provenance) — but a DIFFERENT risk profile, since its idioms are byte-proven and citations are explanation, so a targeted citation sweep is proportionate rather than a full audit. Not done; flagged. Docs-only: no src/ or config/ touched, R22 not re-run and not claimed.