swift

06c32d74 - [region-isolation] Teach SIL isolation inference how to infer applies isolation from their callee's isolation.

[region-isolation] Teach SIL isolation inference how to infer applies isolation from their callee's isolation. This fixes a few issues I missed in the past bit of commits. I need to fix one issue around async let, but I am going to fix it when I do a sweep across async let.