[IRGen] Code Size Reduction: Outline Copy/Consume (Loadable) Enum

docs/ABI.rst

@@ -792,6 +792,9 @@ Globals
   global ::= type 'WV'                   // value witness table
   global ::= entity 'Wv' DIRECTNESS      // field offset
 
+  global ::= type 'Wy' // Outlined Copy Function Type
+  global ::= type 'We' // Outlined Consume Function Type
+
   DIRECTNESS ::= 'd'                         // direct
   DIRECTNESS ::= 'i'                         // indirect
 

include/swift/Basic/DemangleNodes.def

@@ -177,5 +177,7 @@ NODE(ThrowsAnnotation)
 NODE(EmptyList)
 NODE(FirstElementMarker)
 NODE(VariadicMarker)
+NODE(OutlinedCopy)
+NODE(OutlinedConsume)
 #undef CONTEXT_NODE
 #undef NODE

lib/Basic/Demangle.cpp

@@ -2544,6 +2544,8 @@ class NodePrinter {
     case Node::Kind::EmptyList:
     case Node::Kind::FirstElementMarker:
     case Node::Kind::VariadicMarker:
+    case Node::Kind::OutlinedCopy:
+    case Node::Kind::OutlinedConsume:
       return false;
     }
     unreachable("bad node kind");
@@ -2975,6 +2977,14 @@ void NodePrinter::print(NodePointer pointer, bool asContext, bool suppressType)
     Printer << "curry thunk of ";
     print(pointer->getChild(0), asContext, suppressType);
     return;
+  case Node::Kind::OutlinedCopy:
+    Printer << "outlined copy of ";
+    print(pointer->getChild(0), asContext, suppressType);
+    return;
+  case Node::Kind::OutlinedConsume:
+    Printer << "outlined consume of ";
+    print(pointer->getChild(0), asContext, suppressType);
+    return;
   case Node::Kind::Directness:
     Printer << toString(Directness(pointer->getIndex())) << " ";
     return;

lib/Basic/Demangler.cpp

@@ -1320,6 +1320,14 @@ NodePointer Demangler::demangleWitness() {
       return createWithChildren(Node::Kind::AssociatedTypeWitnessTableAccessor,
                                 Conf, Name, ProtoTy);
     }
+    case 'y': {
+      return createWithChild(Node::Kind::OutlinedCopy,
+                             popNode(Node::Kind::Type));
+    }
+    case 'e': {
+      return createWithChild(Node::Kind::OutlinedConsume,
+                             popNode(Node::Kind::Type));
+    }
     default:
       return nullptr;
   }

lib/Basic/Remangle.cpp

@@ -1697,6 +1697,16 @@ void Remangler::mangleVariadicMarker(Node *node) {
   Out << "<vararg>";
 }
 
+void Remangler::mangleOutlinedCopy(Node *node) {
+  Out << "Wy";
+  mangleChildNodes(node);
+}
+
+void Remangler::mangleOutlinedConsume(Node *node) {
+  Out << "We";
+  mangleChildNodes(node);
+}
+
 void Remangler::mangleSILBoxTypeWithLayout(Node *node) {
   assert(node->getKind() == Node::Kind::SILBoxTypeWithLayout);
   assert(node->getNumChildren() == 1 || node->getNumChildren() == 3);

lib/Basic/Remangler.cpp

@@ -1626,6 +1626,16 @@ void Remangler::mangleVariadicMarker(Node *node) {
   Buffer << 'd';
 }
 
+void Remangler::mangleOutlinedCopy(Node *node) {
+  mangleSingleChildNode(node);
+  Buffer << "Wy";
+}
+
+void Remangler::mangleOutlinedConsume(Node *node) {
+  mangleSingleChildNode(node);
+  Buffer << "We";
+}
+
 void Remangler::mangleSILBoxTypeWithLayout(Node *node) {
   assert(node->getNumChildren() == 1 || node->getNumChildren() == 3);
   assert(node->getChild(0)->getKind() == Node::Kind::SILBoxLayout);