[llvm] [LLVM] Add `llvm.experimental.vector.compress` intrinsic (PR #92289)

[Luke Lau via llvm-commits]

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@@ -266,6 +266,12 @@ def SDTMaskedScatter : SDTypeProfile<0, 4, [
   SDTCisSameNumEltsAs<0, 1>, SDTCisSameNumEltsAs<0, 3>
 ]>;
 
+def SDTMaskedCompress : SDTypeProfile<1, 3, [
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lukel97 wrote:

```suggestion
def SDTVectorCompress : SDTypeProfile<1, 3, [
```

https://github.com/llvm/llvm-project/pull/92289