[PATCH] D120346: [AMDGPU] Extend SILoadStoreOptimizer to handle global stores

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

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TODO: merge flat load/stores.
TODO: merge flat with global promoting to flat.


https://reviews.llvm.org/D120346

Files:
  llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
  llvm/test/CodeGen/AMDGPU/bitcast-constant-to-vector.ll
  llvm/test/CodeGen/AMDGPU/merge-global-load-store.mir
  llvm/test/CodeGen/AMDGPU/soft-clause-exceeds-register-budget.ll

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