[PATCH] D18427: CodeGen: Add DetectDeadLanes pass.

[Matthias Braun via llvm-commits]

MatzeB added a comment.

Note that this patch depends on two small TableGen changes (adding of reverseComposeSubRegIndexLaneMask()) which are simple enough for post-commit review but which I have not pushed yet.


Repository:
  rL LLVM

http://reviews.llvm.org/D18427