Chandler Carruth a4e7f05a28 [x86] Add another combine that is particularly useful for the new vector
shuffle lowering: match shuffle patterns equivalent to an unpcklwd or
unpckhwd instruction.

This allows us to use generic lowering code for v8i16 shuffles and match
the unpack pattern late.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212705 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-10 11:09:29 +00:00
..
2014-07-10 04:50:09 +00:00