[PATCH] D72423: [DemandedBits] Improve accuracy of Add propagator

[Erika via Phabricator via llvm-commits]

rrika updated this revision to Diff 237532.
rrika added a comment.
Herald added a subscriber: mgorny.

Here's an update to confirm that the unit test is going in the right direction. DemandedBits::determineLiveOperandBits is private, so right now it seems to be necessary to build up all this IR before each query. I have yet to read up on what allocation responsibilities are, because creating new llvm contexts in a hot loop doesn't feel like the way it's meant to be done.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72423/new/

https://reviews.llvm.org/D72423

Files:
  llvm/lib/Analysis/DemandedBits.cpp
  llvm/test/Analysis/DemandedBits/add.ll
  llvm/unittests/IR/CMakeLists.txt
  llvm/unittests/IR/DemandedBitsTest.cpp

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