feat(igla): Wave Loop 812 — module-scope [443][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes

[gHashTag]

FPGA Loop Closeout — Wave Loop 812

Date: 2026-07-24
Issue: #1553
Branch: wave-loop-812
Base: wave-loop-811 @ a14ec54ad5989b1040ab6339ac35713099792edb (because earlier wave PRs remain open)

Variant executed

A — [443][2]^6 Pt module-scope packed array-of-struct variable from call with indexed signed writes.

Work performed

1. Created GitHub issue Wave Loop 812 — module-scope [443][2]^6 Pt packed AoS variable from call with indexed signed writes #1553.
2. Created and pushed branch wave-loop-812 from wave-loop-811 HEAD a14ec54ad5989b1040ab6339ac35713099792edb.
3. Copied scripts/gen_w811.py to scripts/gen_w812.py and fixed the generator copy hazard:
   • destination path updated to specs/scratch/w812_bench_module_443x2p6_aos_var_call_write.t27
   • module header f-string updated to module w812_bench_module_443x2p6_aos_var_call_write
   • OUTER = 443, MID_IDX = 221.
4. Generated witness specs/scratch/w812_bench_module_443x2p6_aos_var_call_write.t27:
   • 28,352 elements
   • 907,264-bit packed vector (~0.865 MiBit)
5. Validated the witness:
   • t27c parse — PASS
   • t27c icarus-lowerable — lowerable
   • t27c icarus-simulate — PASSED (17 cycles)
   • t27c icarus-cocotb — reference-model OK
   • t27c seal --save — seal saved to .trinity/seals/scratch_w812_bench_module_443x2p6_aos_var_call_write.json
6. Added integration test accepts_w812_bench_module_443x2p6_aos_var_call_write to bootstrap/tests/icarus_lowerable.rs.
7. Confirmed bootstrap/stage0/FROZEN_HASH is unchanged.
8. Performed weak-point audit and refreshed 2025–2026 ternary/MVL literature scan; no new actionable items found.

Validation matrix

Gate	Result
cargo build --release -p t27c	green
cargo clippy -p t27c	green (780 warnings, 0 errors)
cargo test -p t27c --bin t27c	1494 passed, 0 failed, 2 ignored
cargo test -p tri	78/0
cargo test -p flash-spi	2/0
cargo test -p t27c --test bitnet_pipeline	20/0
cargo test -p t27c --test bitnet_top	17/0
cargo test -p t27c --test icarus_lowerable	272/0
cargo test -p t27c --test verilog_const_array	2/0
t27c parse W812	PASS
t27c icarus-lowerable W812	PASS
t27c icarus-simulate W812	PASS (17 cycles)
t27c icarus-cocotb W812	PASS
t27c seal --save W812	PASS
bootstrap/stage0/FROZEN_HASH	unchanged

Key metrics

• Mechanical ladder depth: W774–W812 = 40 waves.
• Witness element count: 28,352.
• Packed vector width: 907,264 bits (~0.865 MiBit).
• Compiler changes for witness: 0.
• Reference-model changes for witness: 0.
• FROZEN_HASH changes: 0.

Learnings

• The generator copy hazard still spans two text locations (destination path and module header f-string). Fixing both before the first run remains the only manual failure mode. The stale MID_IDX comment was also corrected to 221 for W812.
• make_grid(32768) period-identity check continues to catch offset wrap-around congruent to 0 modulo 32768.
• assert_ne is not emitted by the Icarus simulation path, so bench sites verify changed element values with assert_eq instead.
• The packed-vector AoS lowering remains robust without compiler changes up to at least [443][2]^6 Pt.

Cooperation variants for W813

• A (recommended): [445][2]^6 Pt, outer += 2, MID_IDX = 222.
• B: [443][3]^6 Pt — grow the second inner dimension to stress stride scaling.
• C: [443][2]^6 Pt with negative-index writes to exercise wrap-around addressing.

Artifacts

• scripts/gen_w812.py
• specs/scratch/w812_bench_module_443x2p6_aos_var_call_write.t27
• bootstrap/tests/icarus_lowerable.rs (new test)
• .trinity/seals/scratch_w812_bench_module_443x2p6_aos_var_call_write.json
• docs/reports/FPGA_LOOP_CLOSEOUT_W812_2026-07-24.md
• .claude/plans/wave-loop-813.md

Next step

Create issue #1555, branch wave-loop-813 from wave-loop-812 HEAD, and execute the recommended variant A.

[github-actions]

📓 NotebookLM Notebook linked to this PR

• Notebook ID: b83263109fb055dc
• URL: https://notebooklm.google.com/notebook/b83263109fb055dc

This notebook contains session context, decisions, and artifacts for this work.

[github-actions]

PR Dashboard

Generated at: 2026-07-28 03:06:03 UTC

• feat(igla): Wave Loop 812 — module-scope [443][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1554 feat(igla): Wave Loop 812 — module-scope [443][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-28 | Updated: 2026-07-28 | 11 failing / 17 total
• feat(igla): Wave Loop 811 — module-scope [441][2]^6 Pt packed AoS variable from call with indexed signed writes #1552 feat(igla): Wave Loop 811 — module-scope [441][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-07-28 | Updated: 2026-07-28 | 6 failing / 26 total
• feat(igla): Wave Loop 810 — module-scope [439][2]^6 Pt packed AoS variable from call with indexed signed writes #1550 feat(igla): Wave Loop 810 — module-scope [439][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-07-27 | Updated: 2026-07-27 | 6 failing / 26 total
• feat(igla): Wave Loop 809 — module-scope [437][2]^6 Pt packed AoS variable from call with indexed signed writes #1548 feat(igla): Wave Loop 809 — module-scope [437][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-07-27 | Updated: 2026-07-27 | 6 failing / 26 total
• feat(igla): Wave Loop 808 — [435][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1546 feat(igla): Wave Loop 808 — [435][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-07-26 | Updated: 2026-07-26 | 6 failing / 26 total
• feat(igla): Wave Loop 807 — [433][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1544 feat(igla): Wave Loop 807 — [433][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-07-26 | Updated: 2026-07-26 | 6 failing / 26 total
• feat(igla): Wave Loop 806 — [431][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1542 feat(igla): Wave Loop 806 — [431][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-07-26 | Updated: 2026-07-26 | 6 failing / 26 total
• feat(igla): Wave Loop 805 — [429][2]^6 Pt AoS var call signed writes #1540 feat(igla): Wave Loop 805 — [429][2]^6 Pt AoS var call signed writes | Created: 2026-07-26 | Updated: 2026-07-26 | 6 failing / 26 total
• feat(igla): Wave Loop 804 — [427][2]^6 Pt AoS var call signed writes #1538 feat(igla): Wave Loop 804 — [427][2]^6 Pt AoS var call signed writes | Created: 2026-07-26 | Updated: 2026-07-26 | 6 failing / 26 total
• feat(igla): Wave Loop 803 — [425][2]^6 Pt AoS var call signed writes #1536 feat(igla): Wave Loop 803 — [425][2]^6 Pt AoS var call signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 5 failing / 26 total
• feat(igla): Wave Loop 802 — [423][2]^6 Pt AoS var call signed writes #1534 feat(igla): Wave Loop 802 — [423][2]^6 Pt AoS var call signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 5 failing / 26 total
• feat(igla): Wave Loop 801 — module-scope [421][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes #1532 feat(igla): Wave Loop 801 — module-scope [421][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 5 failing / 25 total
• feat(igla): Wave Loop 800 — module-scope [419][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes #1530 feat(igla): Wave Loop 800 — module-scope [419][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 5 failing / 25 total
• feat(igla): Wave Loop 799 — module-scope [417][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1528 feat(igla): Wave Loop 799 — module-scope [417][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 0 failing / 8 total
• feat(igla): Wave Loop 798 — module-scope [415][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1526 feat(igla): Wave Loop 798 — module-scope [415][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 5 failing / 25 total
• feat(igla): Wave Loop 797 — module-scope [413][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1524 feat(igla): Wave Loop 797 — module-scope [413][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 4 failing / 25 total
• feat(igla): Wave Loop 796 — module-scope [411][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1522 feat(igla): Wave Loop 796 — module-scope [411][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 4 failing / 25 total
• Wave Loop 795 — module-scope [409][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1520 Wave Loop 795 — module-scope [409][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-25 | Updated: 2026-07-25 | 4 failing / 25 total
• Wave Loop 794 — module-scope [407][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1518 Wave Loop 794 — module-scope [407][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• Wave Loop 793 — module-scope [405][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1516 Wave Loop 793 — module-scope [405][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• docs(trinity): Wave Loop 792 closeout — [403][2]^6 Pt module-scope AoS (Closes #1513) #1514 docs(trinity): Wave Loop 792 closeout — [403][2]^6 Pt module-scope AoS (Closes #1513) | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• Wave Loop 791 — module-scope [401][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1512 Wave Loop 791 — module-scope [401][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 790 — module-scope [399][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1510 feat(igla): Wave Loop 790 — module-scope [399][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 789 — module-scope [397][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1508 feat(igla): Wave Loop 789 — module-scope [397][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 788 — module-scope [395][2]^6 Pt non-power-of-two outer-dimension AoS var from call #1506 feat(igla): Wave Loop 788 — module-scope [395][2]^6 Pt non-power-of-two outer-dimension AoS var from call | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 787 — module-scope [393][2]^6 Pt non-power-of-two outer-dimension AoS var from call #1504 feat(igla): Wave Loop 787 — module-scope [393][2]^6 Pt non-power-of-two outer-dimension AoS var from call | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• Wave Loop 786: module-scope [391][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable #1502 Wave Loop 786: module-scope [391][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• Wave Loop 785: module-scope [389][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable #1500 Wave Loop 785: module-scope [389][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 784 — module-scope [387][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1498 feat(igla): Wave Loop 784 — module-scope [387][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 783 — module-scope [385][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1496 feat(igla): Wave Loop 783 — module-scope [385][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 782 — module-scope [383][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes #1494 feat(igla): Wave Loop 782 — module-scope [383][2]^6 Pt non-power-of-two outer-dimension AoS variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 777 — module-scope [373][2]^6 Pt non-power-of-two packed AoS variable with indexed signed writes #1491 feat(igla): Wave Loop 777 — module-scope [373][2]^6 Pt non-power-of-two packed AoS variable with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 3 failing / 25 total
• Merge Wave Loop Ladder W774-W776 + README update #1489 Merge Wave Loop Ladder W774-W776 + README update | Created: 2026-07-24 | Updated: 2026-07-24 | 3 failing / 25 total
• feat(igla): Wave Loop 776 — module-scope [371][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1488 feat(igla): Wave Loop 776 — module-scope [371][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 3 failing / 25 total
• feat(igla): Wave Loop 775 — module-scope [369][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1486 feat(igla): Wave Loop 775 — module-scope [369][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• feat(igla): Wave Loop 774 — module-scope [367][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1484 feat(igla): Wave Loop 774 — module-scope [367][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-24 | Updated: 2026-07-24 | 4 failing / 25 total
• chore(deps)(deps): bump candle-core from 0.10.2 to 0.11.0 #1470 chore(deps)(deps): bump candle-core from 0.10.2 to 0.11.0 | Created: 2026-07-13 | Updated: 2026-07-13 | 3 failing / 25 total
• chore(deps)(deps): bump ed25519-dalek from 2.2.0 to 3.0.0 #1469 chore(deps)(deps): bump ed25519-dalek from 2.2.0 to 3.0.0 | Created: 2026-07-13 | Updated: 2026-07-13 | 3 failing / 25 total
• chore(deps)(deps): bump anyhow from 1.0.102 to 1.0.103 #1468 chore(deps)(deps): bump anyhow from 1.0.102 to 1.0.103 | Created: 2026-07-13 | Updated: 2026-07-13 | 3 failing / 25 total
• chore(deps)(deps): bump ignore from 0.4.25 to 0.4.28 #1467 chore(deps)(deps): bump ignore from 0.4.25 to 0.4.28 | Created: 2026-07-13 | Updated: 2026-07-13 | 3 failing / 25 total
• chore(deps)(deps): bump regex from 1.12.3 to 1.13.0 #1466 chore(deps)(deps): bump regex from 1.12.3 to 1.13.0 | Created: 2026-07-13 | Updated: 2026-07-13 | 3 failing / 25 total
• fix(codegen): faithful Rust/C emit — don't run optimizer on source backends (#1455) #1456 fix(codegen): faithful Rust/C emit — don't run optimizer on source backends (#1455) | Created: 2026-07-10 | Updated: 2026-07-10 | 3 failing / 30 total
• ring-105: ecosystem .tri rewrite (7 repos -> t27 SSOT) #1454 ring-105: ecosystem .tri rewrite (7 repos -> t27 SSOT) | Created: 2026-07-08 | Updated: 2026-07-08 | 1 failing / 17 total
• chore(license): align README/Cargo.toml/.zenodo.json/CITATION.cff to Apache-2.0 #1437 chore(license): align README/Cargo.toml/.zenodo.json/CITATION.cff to Apache-2.0 | Created: 2026-07-07 | Updated: 2026-07-07 | 23 failing / 44 total
• Wave Loop 459 — gen-verilog array parameters from test/invariant/bench + yosys warning gate + ROM style pragma #1434 Wave Loop 459 — gen-verilog array parameters from test/invariant/bench + yosys warning gate + ROM style pragma | Created: 2026-07-06 | Updated: 2026-07-06 | 5 failing / 27 total
• feat(igla): Wave Loop 458 — gen-verilog warning hygiene + module-level array parameters #1432 feat(igla): Wave Loop 458 — gen-verilog warning hygiene + module-level array parameters | Created: 2026-07-06 | Updated: 2026-07-06 | 5 failing / 27 total
• feat(igla): Wave Loop 457 — RAM style pragma support for module-level arrays #1430 feat(igla): Wave Loop 457 — RAM style pragma support for module-level arrays | Created: 2026-07-06 | Updated: 2026-07-06 | 5 failing / 27 total
• Wave Loop 454 — high-VCCINT adversarial witness + duty-cycle/jitter robustness theorems #1426 Wave Loop 454 — high-VCCINT adversarial witness + duty-cycle/jitter robustness theorems | Created: 2026-07-06 | Updated: 2026-07-06 | 5 failing / 26 total
• feat(igla): Wave Loop 436 — live XADC → PVT context in boot logs and sweep reports (closes #1402) #1406 feat(igla): Wave Loop 436 — live XADC → PVT context in boot logs and sweep reports (closes #1402) | Created: 2026-07-05 | Updated: 2026-07-05 | 5 failing / 27 total
• feat(igla): Wave Loop 435 — live XADC → PVT context CLI export, OSCFSEL 0..7 synthetic theorem matrix #1403 feat(igla): Wave Loop 435 — live XADC → PVT context CLI export, OSCFSEL 0..7 synthetic theorem matrix | Created: 2026-07-05 | Updated: 2026-07-06 | 10 failing / 52 total

Summary

Status	Count
Total Open PRs	50
PRs with Failing Checks	49
PRs with All Checks Green	1
READY	1
FAILING	49
PENDING	0

Seal Status

• ⚠️ STALE -- sha256(compiler.rs)=68a0b933c00b != manifest seal=87e5cbd3ad94.
  The committed NMSE numbers were certified against an older compiler.rs.
  Run scripts/reseal-check.sh locally for the two-step reseal command (advisory; not a merge gate).