[PATCH] D113219: [RISCV] Prevent crashes when bitcasting between fixed vectors and scalars.

[Craig Topper via Phabricator via llvm-commits]

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Not all scalar element types are allowed in vectors so we may not
be able to bitcast to a 1 element vector to use insert/extract.

This will become a bigger issue when the Zve extensions are commited.
For now, I'm using the ELEN limit to limit the element types.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D113219

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-bitcast.ll

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