[PATCH] D59069: [Utils] Extract EliminateUnreachableBlocks (NFC)

[Brian Gesiak via Phabricator via llvm-commits]

modocache created this revision.
modocache added reviewers: mkazantsev, wmi, davidxl, silvas, davide.
Herald added a project: LLVM.

Extract the functionality of eliminating unreachable basic blocks
within a function, previously encapsulated within the
-unreachableblockelim pass, and make it available as a function within
BlockUtils.h. No functional change intended other than making the logic
reusable.

Exposing this logic makes it easier to implement
https://reviews.llvm.org/D59068, which fixes coroutines bug
https://bugs.llvm.org/show_bug.cgi?id=40979.


Repository:
  rL LLVM

https://reviews.llvm.org/D59069

Files:
  include/llvm/Transforms/Utils/BasicBlockUtils.h
  lib/CodeGen/UnreachableBlockElim.cpp
  lib/Transforms/Utils/BasicBlockUtils.cpp
  unittests/Transforms/Utils/BasicBlockUtilsTest.cpp

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