[PATCH] D106289: [InstCombine] Fold phi ( inttoptr/ptrtoint x ) to phi (x)

[Krishna Kariya via Phabricator via llvm-commits]

Krishnakariya created this revision.
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In this patch, we focus on phi-node operands with inttoptr casts. 
We know that ptrtoint( inttoptr( ptrtoint x) ) is same as ptrtoint (x). 
So, we want to remove this roundtrip cast which goes through phi-node.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106289

Files:
  llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/phi-int2ptr-fold.ll

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