[PATCH] D77748: [CodeGen] Allow partial tail duplication in Machine Block Placement.

[Hongtao Yu via Phabricator via llvm-commits]

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A count profile may affect tail duplication's heuristic causing a block to be duplicated in only a part of its predecessors. This is not allowed in the Machine Block Placement pass where an assert will go off. I'm removing the assert and making the optimization bail out when such case happens.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D77748

Files:
  llvm/lib/CodeGen/MachineBlockPlacement.cpp
  llvm/test/CodeGen/X86/tail-dup-partial.ll

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