[all-commits] [llvm/llvm-project] 9f7350: [DSE, MemorySSA] Handle atomicrmw/cmpxchg conservat...

[Florian Hahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f7350672e3bd80a57a1296e1b6ecd41928ca0c6
      https://github.com/llvm/llvm-project/commit/9f7350672e3bd80a57a1296e1b6ecd41928ca0c6
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2020-08-21 (Fri, 21 Aug 2020)

  Changed paths:
    M llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
    M llvm/test/Transforms/DeadStoreElimination/MSSA/atomic.ll

  Log Message:
  -----------
  [DSE,MemorySSA] Handle atomicrmw/cmpxchg conservatively.

This adds conservative handling of AtomicRMW/AtomicCmpXChg to
isDSEBarrier, similar to atomic loads and stores.