[llvm] Revert "Revert "[SelectionDAG] Fix null pointer dereference in resolveDanglingDebugInfo"" (PR #180368)

[via llvm-commits]

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@@ -1519,6 +1518,7 @@ void SelectionDAGBuilder::resolveDanglingDebugInfo(const Value *V,
       // in the first place we should not be more successful here). Unless we
       // have some test case that prove this to be correct we should avoid
       // calling EmitFuncArgumentDbgValue here.
+      unsigned ValSDNodeOrder = Val.getNode()->getIROrder();
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natanelh-mobileye wrote:

```suggestion
      unsigned ValSDNodeOrder = Val->getIROrder();
```
Please see if this applies here? SDValue has operator* to SDNode

https://github.com/llvm/llvm-project/pull/180368