Elena Demikhovsky beb66de0f9 Fixed a bug in LowerVECTOR_SHUFFLE caused assertion failure
lc: X86ISelLowering.cpp:6480: llvm::SDValue llvm::X86TargetLowering::LowerVECTOR_SHUFFLE(llvm::SDValue, llvm::SelectionDAG&) const: Assertion `V1.getOpcode() != ISD::UNDEF&&  "Op 1 of shuffle should not be undef"' failed.
Added a test.

llvm-svn: 148044
2012-01-12 20:33:10 +00:00
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