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Evan Cheng 8d6c229f8c Added a virtual method isVectorClearMaskLegal to TLI. It is similar to
isShuffleMaskLegal, used to determine if it makes sense to turn a
"vector clear" (e.g. pand V, <0, -1, 0, -1> to a shuffle of the vector and
a zero vector.

llvm-svn: 27873
2006-04-20 08:54:13 +00:00
llvm Added a virtual method isVectorClearMaskLegal to TLI. It is similar to 2006-04-20 08:54:13 +00:00