[PATCH] D57053: Extra processing for BitCast + PHI in InstCombine

[Guozhi Wei via Phabricator via llvm-commits]

Carrot added a comment.
Herald added a project: LLVM.

I couldn't understand the problem after reading the description.

Can I describe it as: A value is used as two different types in two basic blocks (or more). Although the bitcast of %11 (I guess optimizeBitCastFromPhi starts from here) can be removed with new set of PHIs, the old PHIs can't be removed due to its usage of type B in bb6. So we need to keep two set of values(registers) in many places even after DeSSA.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D57053/new/

https://reviews.llvm.org/D57053