Tim Northover 256a16d031 FastIsel: take care to update iterators when removing instructions. ...

We keep a few iterators into the basic block we're selecting while
performing FastISel. Usually this is fine, but occasionally code wants
to remove already-emitted instructions. When this happens we have to be
careful to update those iterators so they're not pointint at dangling
memory.

llvm-svn: 349365

2018-12-17 17:25:53 +00:00

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