[PATCH] D64876: [Attributor] Deduce "dereferenceable" attribute

[Hideto Ueno via Phabricator via llvm-commits]

uenoku created this revision.
uenoku added reviewers: jdoerfert, sstefan1.
Herald added subscribers: llvm-commits, jfb, hiraditya.
Herald added a project: LLVM.

Deduce dereferenceable attribute in Attributor.

These will be added in a later patch.

- dereferenceable(_or_null)_globally (D61652 <https://reviews.llvm.org/D61652>)
- Deduction based on load instruction (similar to D64258 <https://reviews.llvm.org/D64258>)


https://reviews.llvm.org/D64876

Files:
  llvm/include/llvm/Transforms/IPO/Attributor.h
  llvm/lib/Transforms/IPO/Attributor.cpp
  llvm/test/Transforms/FunctionAttrs/arg_nocapture.ll
  llvm/test/Transforms/FunctionAttrs/dereferenceable.ll
  llvm/test/Transforms/FunctionAttrs/nonnull.ll

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