[PATCH] D120230: [SelectOpti][1/4] Setup new select-optimize pass

[Sotiris Apostolakis via Phabricator via llvm-commits]

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This is the first commit for the cmov-vs-branch optimization pass.
The goal is to develop a new profile-guided and target-independent cost/benefit analysis for selecting conditional moves over branches when optimizing for performance.

Initially, this new pass will only be enabled for instrumentation-based PGO.

RFC: https://discourse.llvm.org/t/rfc-cmov-vs-branch-optimization/6040


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120230

Files:
  llvm/include/llvm/CodeGen/CodeGenPassBuilder.h
  llvm/include/llvm/CodeGen/MachinePassRegistry.def
  llvm/include/llvm/CodeGen/Passes.h
  llvm/include/llvm/InitializePasses.h
  llvm/include/llvm/LinkAllPasses.h
  llvm/include/llvm/Target/CGPassBuilderOption.h
  llvm/lib/CodeGen/CMakeLists.txt
  llvm/lib/CodeGen/CodeGen.cpp
  llvm/lib/CodeGen/SelectOptimize.cpp
  llvm/lib/CodeGen/TargetPassConfig.cpp
  llvm/tools/opt/opt.cpp

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