[llvm] [RemoveDIs][DebugInfo] Add DPVAssign variant of DPValue (PR #77912)

[Stephen Tozer via llvm-commits]

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@@ -14,33 +14,80 @@
 namespace llvm {
 
 DPValue::DPValue(const DbgVariableIntrinsic *DVI)
-    : DebugValueUser(DVI->getRawLocation()), Variable(DVI->getVariable()),
-      Expression(DVI->getExpression()), DbgLoc(DVI->getDebugLoc()) {
+    : DebugValueUser({DVI->getRawLocation(), nullptr, nullptr}),
+      Variable(DVI->getVariable()), Expression(DVI->getExpression()),
+      DbgLoc(DVI->getDebugLoc()), AddressExpression(nullptr) {
   switch (DVI->getIntrinsicID()) {
   case Intrinsic::dbg_value:
     Type = LocationType::Value;
     break;
   case Intrinsic::dbg_declare:
     Type = LocationType::Declare;
     break;
+  case Intrinsic::dbg_assign: {
+    Type = LocationType::Assign;
+    const DbgAssignIntrinsic *Assign =
+        static_cast<const DbgAssignIntrinsic *>(DVI);
+    resetDebugValue(1, Assign->getRawAddress());
+    AddressExpression = Assign->getAddressExpression();
+    setAssignId(Assign->getAssignID());
+    break;
+  }
   default:
     llvm_unreachable(
         "Trying to create a DPValue with an invalid intrinsic type!");
   }
 }
 
 DPValue::DPValue(const DPValue &DPV)
-    : DebugValueUser(DPV.getRawLocation()),
-      Variable(DPV.getVariable()), Expression(DPV.getExpression()),
-      DbgLoc(DPV.getDebugLoc()), Type(DPV.getType()) {}
+    : DebugValueUser(DPV.DebugValues), Variable(DPV.getVariable()),
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SLTozer wrote:

I think this part probably isn't worth changing - it's a small bit of code and it's going to be rewritten soon by the patch that separates DPValue into various base classes... that patch will have a better perspective on what the appropriate generic/rewrite-friendly approach will be, WDYT?

https://github.com/llvm/llvm-project/pull/77912