[PATCH] D75924: [Attributor] AANoCapture: Regard a comparison to null as nocapture

[Hideto Ueno via Phabricator via llvm-commits]

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

I have missed to check the dereferenceability of the pointer. I'll fix it later.
So now the tests are broken.


This patch treats a pointer comparison to constant null as no capture instruction when null pointer is not defined in `AANoCapture`.


https://reviews.llvm.org/D75924

Files:
  llvm/lib/Transforms/IPO/Attributor.cpp
  llvm/test/Transforms/Attributor/noalias.ll
  llvm/test/Transforms/Attributor/nocapture-1.ll
  llvm/test/Transforms/Attributor/nocapture-2.ll
  llvm/test/Transforms/Attributor/nonnull.ll
  llvm/test/Transforms/Attributor/read_write_returned_arguments_scc.ll
  llvm/test/Transforms/Attributor/returned.ll

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