[PATCH] D32244: [BitVector] Add << and >> operators

[Zachary Turner via Phabricator via llvm-commits]

zturner created this revision.

`BitVector` does not currently provide any operators for shifting left and right by a specified amount.  This patch adds them.

The logic here is surprisingly headache-inducing, but I believe I got it correct.


https://reviews.llvm.org/D32244

Files:
  llvm/include/llvm/ADT/BitVector.h
  llvm/include/llvm/ADT/SmallBitVector.h
  llvm/include/llvm/Support/MathExtras.h
  llvm/unittests/ADT/BitVectorTest.cpp

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