Michael Gottesman ea1f804207 [semantic-sil] Eliminate ValueOwnershipKind::Any from SILPHIArguments in Semantic SIL. ...

Most of this involved sprinkling ValueOwnershipKind::Owned in many places. In
some of these places, I am sure I was too cavalier and I expect some of them to
be trivial. The verifier will help me to track those down.

On the other hand, I do expect there to be some places where we are willing to
accept guaranteed+trivial or owned+trivial. In those cases, I am going to
provide an aggregate ValueOwnershipKind that will then tell SILArgument that it
should disambiguate using the type. This will eliminate the ackwardness from
such code.

I am going to use a verifier to fix such cases.

This commit also begins the serialization of ValueOwnershipKind of arguments,
but does not implement parsing of value ownership kinds. That and undef are the
last places that we still use ValueOwnershipKind::Any.

rdar://29791263

2017-01-10 20:05:23 -08:00

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