[PATCH] D107822: [InstCombine] Fold Int2Ptr/PtrToInt if the ptr is dereferenceable

[Krishna Kariya via Phabricator via llvm-commits]

Krishnakariya created this revision.
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In this patch, we remove the int2ptr [ptr2int (p)] if p is dereferenceable. 
If the user of the round-trip cast is dominated by a load/store instruction of the same address, then we 
can replace round-trip cast with bitcast.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107822

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
  llvm/lib/Transforms/InstCombine/InstCombineInternal.h
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/load-int2ptr-fold.ll

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