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Author SHA1 Message Date
Simon Pilgrim 860f08779c CONCAT_VECTOR of BUILD_VECTOR - minor fix 
Fixed issue with the combine of CONCAT_VECTOR of 2 BUILD_VECTOR nodes - the optimisation wasn't ensuring that the scalar operands of both nodes were the same type/size for implicit truncation.

Test case spotted by Patrik Hagglund

llvm-svn: 235371
 2015-04-21 08:05:43 +00:00
Simon Pilgrim 749953eebb [X86][SSE] Fix for getScalarValueForVectorElement to detect scalar sources requiring truncation. 
The fix ensures that scalar sources inserted into a vector are the correct bit size.

Integer scalar sources from BUILD_VECTOR and SCALAR_TO_VECTOR nodes may require truncation that this function doesn't currently support.

llvm-svn: 235281
 2015-04-19 22:16:49 +00:00