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* [Hexagon] Use shuffles when lowering "gather" shufflevectorsKrzysztof Parzyszek2018-09-121-0/+121
Shufflevector instructions in LLVM IR that extract a subset of elements of a longer input into a shorter vector can be done using VECTOR_SHUFFLEs. This will avoid expanding them into constly extracts and inserts. llvm-svn: 342091
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