[NFC] Remove RC Alias

Expand it to llvm::IntrusiveRefCntPtr

Author: CodaFi

include/swift/Migrator/MigrationState.h

@@ -18,7 +18,6 @@
 #ifndef SWIFT_MIGRATOR_MIGRATIONSTATE_H
 #define SWIFT_MIGRATOR_MIGRATIONSTATE_H
 
-#include "swift/Syntax/References.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/StringRef.h"
 
@@ -78,19 +77,19 @@ struct MigrationState : public llvm::ThreadSafeRefCountedBase<MigrationState> {
     return InputBufferID == OutputBufferID;
   }
 
-  static RC<MigrationState>
+  static llvm::IntrusiveRefCntPtr<MigrationState>
   start(SourceManager &SrcMgr, const unsigned InputBufferID) {
-    return RC<MigrationState> {
+    return llvm::IntrusiveRefCntPtr<MigrationState> {
       new MigrationState {
         MigrationKind::Start, SrcMgr, InputBufferID, InputBufferID
       }
     };
   }
 
-  static RC<MigrationState>
+  static llvm::IntrusiveRefCntPtr<MigrationState>
   make(MigrationKind Kind, SourceManager &SrcMgr, const unsigned InputBufferID,
        const unsigned OutputBufferID) {
-    return RC<MigrationState> {
+    return llvm::IntrusiveRefCntPtr<MigrationState> {
       new MigrationState {
         Kind,
         SrcMgr,

include/swift/Migrator/Migrator.h

@@ -18,7 +18,7 @@
 #define SWIFT_MIGRATOR_MIGRATOR_H
 
 #include "swift/Migrator/MigrationState.h"
-#include "swift/Syntax/References.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
 
 namespace swift {
 class CompilerInstance;
@@ -39,7 +39,7 @@ struct Migrator {
   CompilerInstance *StartInstance;
   const CompilerInvocation &StartInvocation;
   SourceManager SrcMgr;
-  std::vector<RC<MigrationState>> States;
+  std::vector<llvm::IntrusiveRefCntPtr<MigrationState>> States;
 
   Migrator(CompilerInstance *StartInstance,
            const CompilerInvocation &StartInvocation);