[llvm] [RISCV] Initial codegen support for the XRivosVizip extension (PR #131933)

[Philip Reames via llvm-commits]

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@@ -264,6 +267,18 @@ define void @vnsrl_0_i64(ptr %in, ptr %out) {
 ; ZVE32F-NEXT:    sd a2, 0(a1)
 ; ZVE32F-NEXT:    sd a0, 8(a1)
 ; ZVE32F-NEXT:    ret
+;
+; ZIP-LABEL: vnsrl_0_i64:
+; ZIP:       # %bb.0: # %entry
+; ZIP-NEXT:    vsetivli zero, 4, e64, m1, ta, ma
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preames wrote:

I decided to back out the vunzip2a/b change for now.  I can add this one on it's own with more complete support so that the test diffs are compelling.  

https://github.com/llvm/llvm-project/pull/131933