A 2-level alias param (`type row = st; type st = struct{a,b,c}`) fell
through the single NAMED peel at every classify site, so BOTH ends of
the call moved one eightbyte of a multi-word struct: the caller's
node_isstructarg/node_isaggarg said scalar, the callee prologue spilled
ONLY DI, and s.b/s.c read 8(BP)/(BP) — saved-BP/return-address garbage.
SILENT runtime-wrong (F0 m5_arg/m8_arg1/m8b_arg1lit: cs exit 1, ww
correct, byte-id NO).
Route the four classify chokes through type_chase_named: struct_arg_size
+ aggarg_size (shared by caller push AND the size axes), struct_float_
class (the #165 SSE eightbyte leg), and the fn-prologue param classify
pu. Caller and callee key off the same helpers, so the pair cannot
half-land. cs converges to wwstage's already-correct asm — all probe
rows graduate to byte-id YES; bootstrap asm cmp-identical vs master
(2-level alias params unused in selfhost).
test: 944_alias_accept_run +5 rows — fwd-ref / lit-init / 40B
5-eightbyte aggarg leg / f64 struct_float_class leg, every row checking
the LAST field with distinct values, + base-named control. Mutation-
checked at 738d7f4: the four alias rows exit 1 (the silent-wrong
signature) and byte-id-diff there; 55/55 green here.
Hojun-Cho
b9dd29706b