Michael Gottesman e3f2bb74d2 [inliner] Add a new Inliner that only inlines AlwaysInline functions (but do not put it in the pass pipeline). ...

We need this anyways for -Onone and I want to do some experiments with running
this very early so I can expose more of the stdlib (modulo inlining) to the new
ownership optimizing passes.

I also changed how the inliner handles inlining around OSSA by changing it to
check early that if the caller is in ossa, then we only inline if all of the
callees that the caller calls are in ossa. The intention is to hopefully avoid
weird swings in code-size/perf due to the inliner heuristic's calculation being
artificially manipulated due to some callees not being available to inline (due
to this difference) when others are already available.

2020-03-10 19:53:18 -07:00

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