[PATCH] D99206: Make FindAvailableLoadedValue TBAA aware

[Thomas Preud'homme via Phabricator via llvm-commits]

thopre created this revision.
thopre added reviewers: nikic, fhahn, reames, jdoerfert.
Herald added subscribers: jfb, kosarev, hiraditya.
thopre requested review of this revision.
Herald added a project: LLVM.

FindAvailableLoadedValue() relies on FindAvailablePtrLoadStore() to run
the alias analysis when searching for an equivalent value. However,
FindAvailablePtrLoadStore() calls the alias analysis framework with a
memory location for the load constructed from an address and a size,
which thus lacks TBAA metadata info. This commit modifies
FindAvailablePtrLoadStore() to accept an optional memory location as
parameter to allow FindAvailableLoadedValue() to create it based on the
load instruction, which would then have TBAA metadata info attached.

Depends on D99204 <https://reviews.llvm.org/D99204>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99206

Files:
  llvm/include/llvm/Analysis/Loads.h
  llvm/lib/Analysis/Loads.cpp
  llvm/lib/Transforms/Scalar/JumpThreading.cpp
  llvm/test/Transforms/LoopRotate/load-hoist.ll

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