[llvm] [ISel] Introduce `llvm.pext` and `llvm.pdep` intrinsics (PR #200570)

[Craig Topper via llvm-commits]

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@@ -4196,6 +4196,12 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
     if (SDValue Expanded = TLI.expandCLMUL(Node, DAG))
       Results.push_back(Expanded);
     break;
+  case ISD::PEXT:
+    Results.push_back(TLI.expandPEXT(Node, DAG));
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topperc wrote:

I guess we have this inconsistency elsewhere too. :(

https://github.com/llvm/llvm-project/pull/200570