[PATCH] D70482: [NFC] Change return type for 'shouldOptimizeForSize'

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ebrevnov created this revision.
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Currently 'shouldOptimizeForSize' returns bool to indicate if function should be optimized for size or not. When 'false' is returned it could mean two things. Either we don't need to optimize for size or there is no information. For upcoming changes in LoopVectorizer I need to distinguish between these two cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70482

Files:
  llvm/include/llvm/CodeGen/MachineSizeOpts.h
  llvm/include/llvm/Transforms/Utils/SizeOpts.h
  llvm/lib/CodeGen/MachineSizeOpts.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp
  llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
  llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
  llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/lib/Transforms/Utils/SizeOpts.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/unittests/Target/X86/MachineSizeOptsTest.cpp
  llvm/unittests/Transforms/Utils/SizeOptsTest.cpp

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