[LLVMdev] [cfe-dev] [Proposal] function attribute to reduce emission of vzeroupper instructions

[Rafael Espíndola]

> Maybe a target-specific attribute instead?  It would still apply to all CCs,
> but would never be dropped.

That would work too, yes. I proposed metadata because it looks like it
can be dropped, but that is not a big issue. I would be OK with an
attribute too if that is more convenient or we want to make sure it is
kept.

Cheers,
Rafael