[PATCH] D68958: [Attributor] Add "free"-based heap2stack deduction

[Johannes Doerfert via Phabricator via llvm-commits]

jdoerfert created this revision.
jdoerfert added reviewers: hfinkel, sstefan1, uenoku.
Herald added subscribers: bollu, hiraditya.
Herald added a project: LLVM.

If there is a unique free of the allocated that has to be reached from
the malloc, we can apply the heap-2-stack transformation even if the
pointer escapes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D68958

Files:
  llvm/lib/Transforms/IPO/Attributor.cpp
  llvm/test/Transforms/FunctionAttrs/heap_to_stack.ll

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