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w6c: unstale the cg_sret_retsize header doc for the #38 tagged arm (#38 review)

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Hojun-Cho
2026-06-04 04:01:15 +09:00
parent 4f3967835e
commit 147a8a26b9
1 changed files with 4 additions and 2 deletions
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6
cmd/w6c/cgen.c
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@@ -313,8 +313,10 @@ fld_isfloat(Type *t, int *isf32)
* via sret instead of registers (#10). The element footprint walk * via sret instead of registers (#10). The element footprint walk
* matches the N_RETURN tuple SEND exactly (a float = 1 SSE * matches the N_RETURN tuple SEND exactly (a float = 1 SSE
* eightbyte, a slice/str its 3-word header, a scalar 1 GP word). * eightbyte, a slice/str its 3-word header, a scalar 1 GP word).
* Everything else (in-cap tuples, tagged unions, str, slices, scalars) * - TY_TAGGED whose slot exceeds the AX/DX/CX/R8 cursor
* routes through its register-return ABI → 0. */ * (> TUPLE_GPCAP eightbytes) → its natural size (#38).
* Everything else (in-cap tuples, in-cap tagged unions, str, slices,
* scalars) routes through its register-return ABI → 0. */
static int static int
cg_sret_retsize(Type *rt) cg_sret_retsize(Type *rt)
{ {