Incorrect gas consumption for SENDMSG

[Shvandre]

tvm-spec says both SENDMSG and SENDRAWMSG consume 526 gas units

Proof:

Seitaro Higuchi wrote

RU

вообще, мб надо sendmsg переделать: мы вытаскивали все параметры комиссий в слайсы и контекст как раз чтобы не надо было вскрывать ячейки которые на самом деле и так вскрыты в процессе исполнения:
https://docs.ton.org/v3/documentation/tvm/changelog/tvm-upgrade-2024-04#c7
получается что sendmsg неоправданно дорог
некритично конечно, но все же

ENG:

In general, maybe sendmsg should be redesigned: we pulled all commission parameters into slides and context just to avoid opening cells that are actually opened during execution:
https://docs.ton.org/v3/documentation/tvm/changelog/tvm-upgrade-2024-04#c7
It turns out that sendmsg is unreasonably expensive.
not critical, of course, but still

When using SENDMSG message is opened and the bits/refs are counted. So if I understand it correctly
gas(SENDMSG) ≈ gas(SENDRAWMSG) + gas(CDATASIZE(msg))

(This needs to be tested, though)