Swift SIL: add Operand.changeOwnership

Author: eeckstein

SwiftCompilerSources/Sources/Optimizer/PassManager/Context.swift

@@ -640,6 +640,12 @@ extension Operand {
   func set(to value: Value, _ context: some MutatingContext) {
     instruction.setOperand(at: index, to: value, context)
   }
+
+  func changeOwnership(from: Ownership, to: Ownership, _ context: some MutatingContext) {
+    context.notifyInstructionsChanged()
+    bridged.changeOwnership(from._bridged, to._bridged)
+    context.notifyInstructionChanged(instruction)
+  }
 }
 
 extension Instruction {

include/swift/SIL/SILBridging.h

@@ -415,6 +415,7 @@ struct BridgedOperand {
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedValue getValue() const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedInstruction getUser() const;
   BRIDGED_INLINE OperandOwnership getOperandOwnership() const;
+  void changeOwnership(BridgedValue::Ownership from, BridgedValue::Ownership to) const;
 };
 
 struct OptionalBridgedOperand {

lib/SIL/Utils/SILBridging.cpp

@@ -303,6 +303,16 @@ static_assert((int)BridgedLinkage::PublicExternal == (int)swift::SILLinkage::Pub
 static_assert((int)BridgedLinkage::PackageExternal == (int)swift::SILLinkage::PackageExternal);
 static_assert((int)BridgedLinkage::HiddenExternal == (int)swift::SILLinkage::HiddenExternal);
 
+//===----------------------------------------------------------------------===//
+//                                Operand
+//===----------------------------------------------------------------------===//
+
+void BridgedOperand::changeOwnership(BridgedValue::Ownership from, BridgedValue::Ownership to) const {
+  swift::ForwardingOperand forwardingOp(op);
+  assert(forwardingOp);
+  forwardingOp.replaceOwnershipKind(BridgedValue::castToOwnership(from), BridgedValue::castToOwnership(to));
+}
+
 //===----------------------------------------------------------------------===//
 //                            SILGlobalVariable
 //===----------------------------------------------------------------------===//