[PATCH] D101578: [Attributor][WIP] Add AAExecutionDomainInfo interface

[Joseph Huber via Phabricator via llvm-commits]

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Add the `AAExecutionDomainInfo` abstract attribute to the Attributor.
This will infer information relating to domain information that an
instruction might be execting in. Right now this only includes a very
crude check for instructions that will be executed by the master thread
by comparing a thread-id function with a constant zero.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101578

Files:
  llvm/include/llvm/Transforms/IPO/Attributor.h
  llvm/lib/Transforms/IPO/AttributorAttributes.cpp
  llvm/lib/Transforms/IPO/OpenMPOpt.cpp
  llvm/test/Transforms/OpenMP/single_threaded_execution.ll

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