[PATCH] D151208: [KnownBits] Add support for nuw/nsw on shifts

[Nikita Popov via Phabricator via llvm-commits]

nikic created this revision.
nikic added reviewers: foad, goldstein.w.n, RKSimon.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
nikic requested review of this revision.
Herald added subscribers: llvm-commits, pcwang-thead.
Herald added a project: LLVM.

Implement precise nuw/nsw support in the KnownBits implementation, replacing the rather crude handling in ValueTracking.


https://reviews.llvm.org/D151208

Files:
  llvm/include/llvm/Support/KnownBits.h
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/lib/Support/KnownBits.cpp
  llvm/test/Transforms/ConstraintElimination/geps-unsigned-predicates.ll
  llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-accesses.ll
  llvm/unittests/Support/KnownBitsTest.cpp

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