[PATCH] D106574: [SelectionDAG][RISCV] Add tests showing missed scalable-splat optimizations

[Fraser Cormack via Phabricator via llvm-commits]

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These tests show missed opportunities in the SelectionDAG layer when
dealing with scalable-vector splats. All of these are handled for the
equivalent `ISD::BUILD_VECTOR` code, and the tests have largely been
translated from the equivalent X86 tests.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106574

Files:
  llvm/test/CodeGen/RISCV/rvv/combine-splats.ll
  llvm/test/CodeGen/RISCV/rvv/urem-seteq-vec.ll

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