[llvm] GlobalISel/MachineIRBuilder: Construct DstOp with VRegAttrs (PR #113581)

[Matt Arsenault via llvm-commits]

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@@ -122,6 +132,15 @@ class DstOp {
     }
   }
 
+  MachineRegisterInfo::VRegAttrs getVRegAttrs() const {
+    switch (Ty) {
+    case DstType::Ty_VRegAttrs:
+      return Attrs;
+    default:
+      llvm_unreachable("Not a VRegAttrs Operand");
+    }
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arsenm wrote:

assert + return? This will only ever handle one case 

https://github.com/llvm/llvm-project/pull/113581