ispc/ispc — pull request #641 by jbrodman (2013-10-22 22:37:35+00:00)
Title: Add a "shift" operator to the stdlib.

Similar to rotate, only not circular. Zeros appear on the appropriate ends. An optimization is also added to translate some necessarily inefficient IR to a ShuffleVectorInst in order to compile down to a single SSE4 instruction.