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Following on from the extra VADDV lowering, this extends things to handle VADDLV which allows summing values into a pair of i32 registers, together treated as a i64. This needs to be done in DAGCombine too as the types are otherwise illegal, which is a fairly simple addition on top of the existing code. There is also a VADDLVA instruction handled here, that adds the incoming values from the two general purpose registers. As opposed to the non-long version where we could just add patterns for add(x, VADDV), the long version needs to handle this early before the i64 has being split into too many pieces. Differential Revision: https://reviews.llvm.org/D74224 |
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