[llvm] [LLVM][CodeGen][SVE] Add ElementSize information to pseudo instructions. (PR #206133)

[Ricardo Jesus via llvm-commits]

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rj-jesus wrote:

Would it be worth moving this code to its own TEST(... wrapper so it runs only once? If you prefer it in this function, it might still be worth moving it before !isInstructionSupportedByCPU to test all instructions rather than only those the CPU supports

https://github.com/llvm/llvm-project/pull/206133