[Bug tree-optimization/119614] [15 regression] protobuf-29.4 fails to build with -O2 (error: cannot tail-call: call and return value are different)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119614

--- Comment #24 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Martin Jambor from comment #21)
> I'll look at implementing the required IPA-VR streaming for return values
> this Friday.

If this ends up being too difficult (or has too high risk of fallout), is it an
option to punt on ipa-vrp for musttail? It's pretty new anyway (only in 14 and
somewhat limited).

Though I guess we're not at that point yet anyway as we have some other P1s
left.