[PATCH] D156636: [InstCombine] Deduce `align` and `nonnull` return attributes for `llvm.ptrmask`

[Noah Goldstein via Phabricator via cfe-commits]

goldstein.w.n created this revision.
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We can deduce the former based on the mask / incoming pointer
alignment.  We can set the latter based if know the result in non-zero
(this is essentially just caching our analysis result).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D156636

Files:
  clang/test/CodeGen/arm64_32-vaarg.c
  llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
  llvm/test/Transforms/InstCombine/align-addr.ll
  llvm/test/Transforms/InstCombine/consecutive-ptrmask.ll
  llvm/test/Transforms/InstCombine/ptrmask.ll

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