Swift Bridging: use C++ instead of C bridging for the optimizer

SwiftCompilerSources/Sources/Optimizer/DataStructures/Set.swift

@@ -38,25 +38,25 @@ struct BasicBlockSet : IntrusiveSet {
     
   init(_ context: some Context) {
     self.context = context._bridged
-    self.bridged = PassContext_allocBasicBlockSet(self.context)
+    self.bridged = self.context.allocBasicBlockSet()
   }
 
   func contains(_ block: BasicBlock) -> Bool {
-    BasicBlockSet_contains(bridged, block.bridged) != 0
+    bridged.contains(block.bridged)
   }
 
   /// Returns true if `block` was not contained in the set before inserting.
   @discardableResult
   mutating func insert(_ block: BasicBlock) -> Bool {
-    BasicBlockSet_insert(bridged, block.bridged) != 0
+    bridged.insert(block.bridged)
   }
 
   mutating func erase(_ block: BasicBlock) {
-    BasicBlockSet_erase(bridged, block.bridged)
+    bridged.erase(block.bridged)
   }
 
   var description: String {
-    let function = BasicBlockSet_getFunction(bridged).function
+    let function = bridged.getFunction().function
     let blockNames = function.blocks.enumerated().filter { contains($0.1) }
                                                  .map { "bb\($0.0)"}
     return "{" + blockNames.joined(separator: ", ") + "}"
@@ -64,7 +64,7 @@ struct BasicBlockSet : IntrusiveSet {
 
   /// TODO: once we have move-only types, make this a real deinit.
   mutating func deinitialize() {
-    PassContext_freeBasicBlockSet(context, bridged)
+    context.freeBasicBlockSet(bridged)
   }
 }
 
@@ -83,25 +83,25 @@ struct ValueSet : IntrusiveSet {
     
   init(_ context: some Context) {
     self.context = context._bridged
-    self.bridged = PassContext_allocNodeSet(self.context)
+    self.bridged = self.context.allocNodeSet()
   }
 
   func contains(_ value: Value) -> Bool {
-    NodeSet_containsValue(bridged, value.bridged) != 0
+    bridged.containsValue(value.bridged)
   }
 
   /// Returns true if `value` was not contained in the set before inserting.
   @discardableResult
   mutating func insert(_ value: Value) -> Bool {
-    NodeSet_insertValue(bridged, value.bridged) != 0
+    bridged.insertValue(value.bridged)
   }
 
   mutating func erase(_ value: Value) {
-    NodeSet_eraseValue(bridged, value.bridged)
+    bridged.eraseValue(value.bridged)
   }
 
   var description: String {
-    let function = NodeSet_getFunction(bridged).function
+    let function = bridged.getFunction().function
     var d = "{\n"
     for block in function.blocks {
       for arg in block.arguments {
@@ -123,7 +123,7 @@ struct ValueSet : IntrusiveSet {
 
   /// TODO: once we have move-only types, make this a real deinit.
   mutating func deinitialize() {
-    PassContext_freeNodeSet(context, bridged)
+    context.freeNodeSet(bridged)
   }
 }
 
@@ -142,25 +142,25 @@ struct InstructionSet : IntrusiveSet {
     
   init(_ context: some Context) {
     self.context = context._bridged
-    self.bridged = PassContext_allocNodeSet(self.context)
+    self.bridged = self.context.allocNodeSet()
   }
 
   func contains(_ inst: Instruction) -> Bool {
-    NodeSet_containsInstruction(bridged, inst.bridged) != 0
+    bridged.containsInstruction(inst.bridged)
   }
 
   /// Returns true if `inst` was not contained in the set before inserting.
   @discardableResult
   mutating func insert(_ inst: Instruction) -> Bool {
-    NodeSet_insertInstruction(bridged, inst.bridged) != 0
+    bridged.insertInstruction(inst.bridged)
   }
 
   mutating func erase(_ inst: Instruction) {
-    NodeSet_eraseInstruction(bridged, inst.bridged)
+    bridged.eraseInstruction(inst.bridged)
   }
 
   var description: String {
-    let function = NodeSet_getFunction(bridged).function
+    let function = bridged.getFunction().function
     var d = "{\n"
     for inst in function.instructions {
       if contains(inst) {
@@ -173,6 +173,6 @@ struct InstructionSet : IntrusiveSet {
 
   /// TODO: once we have move-only types, make this a real deinit.
   mutating func deinitialize() {
-    PassContext_freeNodeSet(context, bridged)
+    context.freeNodeSet(bridged)
   }
 }