[PATCH] D93779: ADT: Fix reference invalidation in SmallVector::push_back and single-element insert

[Duncan P. N. Exon Smith via Phabricator via llvm-commits]

dexonsmith created this revision.
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For small enough, trivially copyable `T`, take the argument by value in
`SmallVector::push_back` and copy it when forwarding to
`SmallVector::insert_one_impl`. Otherwise, when growing, update the
argument appropriately.

Depends on https://reviews.llvm.org/D93777.
Split out from https://reviews.llvm.org/D91837.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93779

Files:
  llvm/include/llvm/ADT/SmallVector.h
  llvm/unittests/ADT/SmallVectorTest.cpp

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