[PATCH] D156903: [FuncSpec] Estimate dead blocks more accurately.

[Alexandros Lamprineas via Phabricator via llvm-commits]

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Currently we only consider basic blocks with a unique predecessor when 
estimating the size of dead code. However, we could expand to this to
consider blocks with a back-edge, or blocks preceded by dead blocks.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D156903

Files:
  llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h
  llvm/lib/Transforms/IPO/FunctionSpecialization.cpp
  llvm/unittests/Transforms/IPO/FunctionSpecializationTest.cpp

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