[PATCH] D153453: [MemCpyOpt] implement single BB stack-move optimization which unify the static unescaped allocas

[Kohei Asano via Phabricator via llvm-commits]

khei4 added a comment.

@vitalybuka

> Looks strange that we add lifetime markers on alloca which has no markers before.
> Can't create counterexample, precondition blocks transformation.

Yeah, this is hard, but I believe capture tracking does guarantee that this is safe for unescaped allocas.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D153453/new/

https://reviews.llvm.org/D153453