rust/src/librustc_passes
bors 04145943a2 Auto merge of #39409 - pnkfelix:mir-borrowck2, r=nikomatsakis
MIR EndRegion Statements (was MIR dataflow for Borrows)

This PR adds an `EndRegion` statement to MIR (where the `EndRegion` statement is what terminates a borrow).

An earlier version of the PR implemented a dataflow analysis on borrow expressions, but I am now factoring that into a follow-up PR so that reviewing this one is easier. (And also because there are some revisions I want to make to that dataflow code, but I want this PR to get out of WIP status...)

This is a baby step towards MIR borrowck. I just want to get the review process going while I independently work on the remaining steps.
2017-06-19 13:01:27 +00:00
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