[PATCH] D130980: [AA] Model operand bundles more precisely

[Nikita Popov via Phabricator via llvm-commits]

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Based on D130896 <https://reviews.llvm.org/D130896>, we can model operand bundles more precisely. In addition to the baseline ModRefBehavior, a reading/clobbering operand bundle may also read/write all locations. For example, a memcpy with deopt bundle can read and write argument memory, but only read inaccessible and other memory.

This means that getModRefInfo() for memcpy with a pointer that does not alias the arguments results in Ref, rather than ModRef, without the need to implement any special handling.

Depends on D130896 <https://reviews.llvm.org/D130896>.


https://reviews.llvm.org/D130980

Files:
  llvm/include/llvm/Analysis/AliasAnalysis.h
  llvm/lib/Analysis/AliasAnalysis.cpp
  llvm/lib/Analysis/BasicAliasAnalysis.cpp

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