[gHashTag]

The return-type parser had no ( branch → -> (u32,u32) desynced and the whole function vanished from the AST (1 FnDecl vs 2), breaking all backends. Adds a LParen branch capturing (T, U, …); the function now survives with the correct signature.

Verified: regression test test_tuple_return_type_not_dropped, full suite 1496/0, non-tuple specs unaffected, FROZEN_HASH re-sealed. Part 1 of tuple support (#1702) — body-lowering + let (a,b) destructuring are clearly-scoped follow-ups.

Closes #1709

[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: 2026-08-05 14:56:35 UTC

• fix(parser): tuple return types no longer silently drop the function #1710 fix(parser): tuple return types no longer silently drop the function | Created: 2026-08-05 | Updated: 2026-08-05 | 12 failing / 17 total
• feat(igla): Wave Loop 878 — module-scope [575][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1707 feat(igla): Wave Loop 878 — module-scope [575][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 877 — module-scope [573][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1705 feat(igla): Wave Loop 877 — module-scope [573][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 876 — module-scope [571][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1704 feat(igla): Wave Loop 876 — module-scope [571][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 875 — module-scope [569][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1700 feat(igla): Wave Loop 875 — module-scope [569][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 874 — module-scope [567][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1698 feat(igla): Wave Loop 874 — module-scope [567][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 873 — module-scope [565][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1695 feat(igla): Wave Loop 873 — module-scope [565][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 872 — module-scope [563][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1693 feat(igla): Wave Loop 872 — module-scope [563][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 871 — module-scope [561][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1692 feat(igla): Wave Loop 871 — module-scope [561][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 870 — module-scope [559][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1689 feat(igla): Wave Loop 870 — module-scope [559][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 869 — module-scope [557][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1687 feat(igla): Wave Loop 869 — module-scope [557][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 868 — module-scope [555][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1685 feat(igla): Wave Loop 868 — module-scope [555][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 867 — module-scope [553][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1683 feat(igla): Wave Loop 867 — module-scope [553][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 866 — module-scope [551][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1681 feat(igla): Wave Loop 866 — module-scope [551][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 865 — module-scope [549][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1679 feat(igla): Wave Loop 865 — module-scope [549][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 864 — module-scope [547][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1677 feat(igla): Wave Loop 864 — module-scope [547][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 863 — module-scope [545][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1671 feat(igla): Wave Loop 863 — module-scope [545][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 862 — module-scope [543][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1669 feat(igla): Wave Loop 862 — module-scope [543][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 861 — module-scope [541][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1667 feat(igla): Wave Loop 861 — module-scope [541][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 860 — module-scope [539][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1665 Wave Loop 860 — module-scope [539][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 859 — module-scope [537][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1663 Wave Loop 859 — module-scope [537][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 858 — module-scope [535][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1661 Wave Loop 858 — module-scope [535][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 857 — module-scope [533][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1657 feat(igla): Wave Loop 857 — module-scope [533][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 856 — module-scope [531][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1655 feat(igla): Wave Loop 856 — module-scope [531][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 855 — module-scope [529][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1651 feat(igla): Wave Loop 855 — module-scope [529][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 854 — module-scope [527][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1649 feat(igla): Wave Loop 854 — module-scope [527][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 853 — [525][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1647 feat(igla): Wave Loop 853 — [525][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 852 — [523][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1645 feat(igla): Wave Loop 852 — [523][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• feat(igla): Wave Loop 851 — [521][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1643 feat(igla): Wave Loop 851 — [521][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• feat(igla): Wave Loop 850 — module-scope [519][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1641 feat(igla): Wave Loop 850 — module-scope [519][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 849 — module-scope [517][2]^6 Pt packed AoS variable from call with indexed signed writes #1639 Wave Loop 849 — module-scope [517][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 848 — module-scope [515][2]^6 Pt packed AoS variable from call with indexed signed writes #1637 Wave Loop 848 — module-scope [515][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 847 — [513][2]^6 Pt non-power-of-two AoS call-write witness (1-MiBit boundary) #1635 Wave Loop 847 — [513][2]^6 Pt non-power-of-two AoS call-write witness (1-MiBit boundary) | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• Wave Loop 846 — [511][2]^6 Pt non-power-of-two AoS call-write witness #1633 Wave Loop 846 — [511][2]^6 Pt non-power-of-two AoS call-write witness | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 845 — module-scope [509][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1631 feat(igla): Wave Loop 845 — module-scope [509][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 844 — module-scope [507][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1629 feat(igla): Wave Loop 844 — module-scope [507][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 843 — module-scope [505][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1627 feat(igla): Wave Loop 843 — module-scope [505][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 842 — module-scope [503][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1625 feat(igla): Wave Loop 842 — module-scope [503][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 841 — module-scope [501][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1623 feat(igla): Wave Loop 841 — module-scope [501][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 840 — module-scope [499][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1621 feat(igla): Wave Loop 840 — module-scope [499][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 839 — module-scope [497][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1619 feat(igla): Wave Loop 839 — module-scope [497][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 838 — module-scope [495][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1617 feat(igla): Wave Loop 838 — module-scope [495][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 837 — module-scope [493][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1615 feat(igla): Wave Loop 837 — module-scope [493][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 836 — module-scope [491][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1613 feat(igla): Wave Loop 836 — module-scope [491][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 835 — module-scope [489][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1611 feat(igla): Wave Loop 835 — module-scope [489][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 834 — module-scope [487][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1609 feat(igla): Wave Loop 834 — module-scope [487][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 4 total
• feat(igla): Wave Loop 833 — module-scope [485][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1607 feat(igla): Wave Loop 833 — module-scope [485][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total
• feat(igla): Wave Loop 832 — module-scope [483][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1605 feat(igla): Wave Loop 832 — module-scope [483][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total
• feat(igla): Wave Loop 831 — module-scope [481][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1603 feat(igla): Wave Loop 831 — module-scope [481][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total
• feat(igla): Wave Loop 830 — module-scope [479][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1602 feat(igla): Wave Loop 830 — module-scope [479][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total

Summary

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

Seal Status

• ⚠️ STALE -- sha256(compiler.rs)=373978ca4db8 != 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).