[PATCH] D25298: [AMDGPU] Refactor waitcnt encoding

[Konstantin Zhuravlyov via llvm-commits]

kzhuravl created this revision.
kzhuravl added a reviewer: tstellarAMD.
kzhuravl added a subscriber: llvm-commits.
Herald added subscribers: tony-tye, yaxunl, nhaehnle, wdng, arsenm.

- Refactor bit packing/unpacking
- Calculate bit mask given bit shift and bit width
- Introduce function for decoding bits of waitcnt
- Introduce function for encoding bits of waitcnt


https://reviews.llvm.org/D25298

Files:
  lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
  lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
  lib/Target/AMDGPU/SIInsertWaits.cpp
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h

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