[PATCH] D23896: [InstCombine] Try to resubmit the combine of A->B->A BitCast and fix for pr27996

[Guozhi Wei via llvm-commits]

Carrot updated this revision to Diff 72727.
Carrot marked an inline comment as done.

https://reviews.llvm.org/D23896

Files:
  lib/Transforms/InstCombine/InstCombineCasts.cpp
  lib/Transforms/InstCombine/InstCombineInternal.h
  test/Transforms/InstCombine/pr25342.ll
  test/Transforms/InstCombine/pr27703.ll
  test/Transforms/InstCombine/pr27996.ll

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