llvm-project

a7a4c16c - [mlir][Vector] Support efficient shape cast lowering for n-D vectors (#123497)

[mlir][Vector] Support efficient shape cast lowering for n-D vectors (#123497) This PR implements a generalization of the existing more efficient lowering of shape casts from 2-D to 1D and 1-D to 2-D vectors. This significantly reduces code size and generates more performant code for n-D shape casts that make their way to LLVM/SPIR-V.