[PrintAsObjC] Add missing SWIFT_COMPILE_NAME for classes renamed with @objc.

This could prevent mixed-source frameworks from being properly imported
into Swift.

rdar://problem/21930630

Swift SVN r30541

Author: jrose-apple

lib/PrintAsObjC/PrintAsObjC.cpp

@@ -1603,6 +1603,7 @@ class ModuleWriter {
              "SWIFT_CLASS_EXTRA\n"
            "#  define SWIFT_CLASS_NAMED(SWIFT_NAME) "
              "__attribute__((objc_subclassing_restricted)) "
+             "SWIFT_COMPILE_NAME(SWIFT_NAME) "
              "SWIFT_CLASS_EXTRA\n"
            "# else\n"
            "#  define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) "

test/PrintAsObjC/empty.swift

@@ -17,7 +17,9 @@
 
 // CHECK: # define SWIFT_METATYPE(X)
 // CHECK: # define SWIFT_CLASS
+// CHECK: # define SWIFT_CLASS_NAMED
 // CHECK: # define SWIFT_PROTOCOL
+// CHECK: # define SWIFT_PROTOCOL_NAMED
 // CHECK: # define SWIFT_EXTENSION(M)
 // CHECK: # define OBJC_DESIGNATED_INITIALIZER
 

test/PrintAsObjC/swift_name.m

@@ -0,0 +1,27 @@
+// RUN: rm -rf %t && mkdir %t
+// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) %S/../Inputs/empty.swift -parse -emit-objc-header-path %t/empty.h
+// RUN: %clang -E -fobjc-arc -fmodules -I %t %s | FileCheck %s
+
+// REQUIRES: objc_interop
+
+#import "empty.h"
+
+@class ABC; // CHECK-LABEL: @class ABC;
+SWIFT_CLASS(abc) // CHECK-NEXT: __attribute__((objc_runtime_name(abc)))
+@interface ABC // CHECK-NEXT: @interface
+@end
+
+@class DEF; // CHECK-LABEL: @class DEF;
+SWIFT_CLASS_NAMED(def) // CHECK-NEXT: __attribute__((swift_name(def)))
+@interface DEF // CHECK-NEXT: @interface
+@end
+
+@protocol AAA; // CHECK-LABEL: @protocol AAA;
+SWIFT_PROTOCOL(aaa) // CHECK-NEXT: __attribute__((objc_runtime_name(aaa)))
+@protocol AAA // CHECK-NEXT: @protocol
+@end
+
+@protocol BBB; // CHECK-LABEL: @protocol BBB;
+SWIFT_PROTOCOL_NAMED(bbb) // CHECK-NEXT: __attribute__((swift_name(bbb)))
+@protocol BBB // CHECK-NEXT: @protocol
+@end