[llvm] [SandboxIR] Add the ExtractElementInst class (PR #102706)

[Jorge Gorbe Moya via llvm-commits]

slackito wrote:

The windows build failure seems unrelated: test\tools\llvm-objdump\ELF\RISCV\Output\source-interleave.ll. I'm going to merge this now.

https://github.com/llvm/llvm-project/pull/102706