[PATCH] D33626: [GlobalISel] combine not symmetric merge/unmerge nodes.

[Igor Breger via Phabricator via llvm-commits]

igorb created this revision.
Herald added subscribers: kristof.beyls, rovka.

In some cases legalization ends up with not symmetric merge/unmerge nodes.
Transform it to merge/unmerge nodes.


https://reviews.llvm.org/D33626

Files:
  include/llvm/CodeGen/GlobalISel/Legalizer.h
  lib/CodeGen/GlobalISel/Legalizer.cpp
  test/CodeGen/X86/GlobalISel/legalize-add-v512.mir

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