[PATCH] D121524: [AMDGPU] use scalar shift for SALU users in frame index elimination

[Alexander via Phabricator via llvm-commits]

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In the frame index lowering we have to insert shift and add
instructions to adjust stack object access.  We need to take care of the stack
object user kind and use scalar shift/add for scalar users.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121524

Files:
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
  llvm/test/CodeGen/AMDGPU/frame-index.mir

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