[PATCH] Make DAGCombiner work on vector bitshifts with constant splat vectors.

Tim Northover t.p.northover at gmail.com
Thu Mar 6 23:32:17 PST 2014

  Hi Matt,

  Doesn't this convert a bunch of BUILD_VECTOR nodes into just CONSTANTs? I'm rather dubious that most backends will cope with that.

  It also seems to be missing the definition of getScalarSizeInBits. Does it depend on a completely internal patch, or just one that hasn't been committed yet?




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