commit 4a9ee89912a5f4bbd66ae6d68960baf45d5d2733
author Tim Northover <tnorthover@apple.com> Mon Dec 17 17:25:53 2018 +0000
committer Tim Northover <tnorthover@apple.com> Mon Dec 17 17:25:53 2018 +0000
tree 8a06a469fba21e1b8596dea71d26b8d5dd1c448a
parent 785589d4997fd6d9881b60874fed6e2b891cfebd

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349365 91177308-0d34-0410-b5e6-96231b3b80d8