[PATCH] D61554: [llvm] Add CloneModuleInto to clone a Module into another one, a la assignment

[Don Hinton via Phabricator via llvm-commits]

hintonda created this revision.
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The Module class contains an LLVMContext& member, which
prevents assignment.  This technique uses placement new and passed the
new instance to the existing CloneModule functions to accomplish the
same thing.

This is useful in passes that want to clone the Module, prospectively
modify it, then decide whether or not to keep the changes, e.g.,
bugpoint type reduction passes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D61554

Files:
  llvm/include/llvm/Transforms/Utils/Cloning.h
  llvm/lib/Transforms/Utils/CloneModule.cpp
  llvm/unittests/Transforms/Utils/CloningTest.cpp

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