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102401
2012 Jul 27
4
[LLVMdev] Vector promotion broken for <2 x [i8|i16]>
Vector promotion which is new in LLVM 3.1 is broken for sub32 bit types. The problem is in the VectorLegalizer::PromoteVectorOp.
The function getTypeToPromoteTo will return a <2 x i32> for a <2 x i8>, <2 x i16> or <4 x i8>. The problem is that there are no vectors of size 1 defined for i32 or i16. The attached patch fixes these issues.
This can be reproduced by setting in