[llvm] [SLPVectorizer] Handle InsertValueInst in getVectorElementSize (PR #215473)

[Alexey Bataev via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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alexey-bataev wrote:

Precommit in a separate NFC patch too

https://github.com/llvm/llvm-project/pull/215473