[PATCH] D18427: CodeGen: Add DetectDeadLanes pass.

[Matthias Braun via llvm-commits]

MatzeB added a comment.

As the SetVector/BitSet reviews seem to be stalled I will commit a version which directly uses a BitVector+std::deque now.
More testing also revealed that I have to check for cross-class copies which render lanemask information invalid.


Repository:
  rL LLVM

http://reviews.llvm.org/D18427