Hojun-Cho c4b3aca5e4 w6c+selfhost: principled sub-word signedness (closes #5/#10) ...

type_isunsigned recurses TY_ENUM and includes TY_RUNE on both stages.
13 LOAD + 6 STORE ladder sites (cstage) plus 4 more wwstage stragglers
in cgindex/cgforrange collapsed to fldloadop/fldstoreop helpers. N_CAST
narrow gate symmetrised; task #1's literal-kind workaround retired.
bool kept out of type_isunsigned, special-cased in field helpers.

Retroactively fixes a u32 mis-sign-extend in deref-compound (sz=4
hardcoded MOVSXD), pinned by new 660_field_signed row.

2026-05-13 22:23:00 +09:00

19 KiB

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