[PATCH] D87951: Enable opt-bisect for the new pass manager

[Josh Stone via Phabricator via llvm-commits]

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This instruments a before-pass callback using the existing OptBisect
class to decide if new passes should be skipped. Passes that force
isRequired will still run anyway.

The test case is resurrected from r267022, an early version of D19172 <https://reviews.llvm.org/D19172>
that had new pass manager support (later reverted and redone without).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D87951

Files:
  llvm/include/llvm/IR/OptBisect.h
  llvm/include/llvm/Passes/StandardInstrumentations.h
  llvm/lib/Passes/StandardInstrumentations.cpp
  llvm/test/Other/opt-bisect-new-pass-manager.ll

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