[llvm] [RISCV] Teach the VL Optimizer about Zvzip instructions (PR #214405)

[Luke Lau via llvm-commits]

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@@ -2423,3 +2424,111 @@ body: |
     %2:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 5 /* e32 */, 3 /* ta, ma */
     PseudoVSOXSEG3EI32_V_M1_M2 $noreg, $noreg, %2, 1, 6 /* e64 */
 ...
+---
+name:            vzip_vv_vd
+body:             |
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lukel97 wrote:

Nit this and the other test bodies can be indented less
```suggestion
body: |
```

https://github.com/llvm/llvm-project/pull/214405