Robert Lougher 2ee97f03a4 Fix assert when decoding PSHUFB mask
The PSHUFB mask decode routine used to assert if the mask index was out of
range (<0 or greater than the size of the vector).  The problem is, we can
legitimately have a PSHUFB with a large index using intrinsics.  The
instruction only uses the least significant 4 bits.  This change removes the
assert and masks the index to match the instruction behaviour.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218242 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-22 11:54:38 +00:00
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