[llvm] [RISCV][GlobalISel] Vector Extension vadd Legalizer (PR #71400)

[Michael Maitland via llvm-commits]

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@@ -0,0 +1,9 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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michaelmaitland wrote:

Maybe we should append vector add cases to legalize-add.mir file instead of creating a new one. It looks like that legalize-add.mir file is testing G_ADD leglization on different types.

https://github.com/llvm/llvm-project/pull/71400