[PATCH] D138646: [AAPointerInfo] track multiple constant offsets for each use

[Sameer Sahasrabuddhe via Phabricator via llvm-commits]

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An expression of the form `gep(base, select(pred, const1, const2))` can result
in a set of offsets instead of just one. PointerInfo can now track these sets
instead of conservatively modeling them as Unknown.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138646

Files:
  llvm/include/llvm/Transforms/IPO/Attributor.h
  llvm/lib/Transforms/IPO/AttributorAttributes.cpp
  llvm/test/CodeGen/AMDGPU/attributor-through-select.ll
  llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll

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