test: ignore unused options in some tests

These tests explicitly disable the use of modules.  However, the lit
configuration is such that the module cache path will be passed unconditionally
to the clang invocation.  Squelch the unused option warning (error).

Author: compnerd

test/PrintAsObjC/cdecl.swift

@@ -4,7 +4,7 @@
 // RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -parse-as-library %t/cdecl.swiftmodule -parse -emit-objc-header-path %t/cdecl.h -import-objc-header %S/../Inputs/empty.h -disable-objc-attr-requires-foundation-module
 // RUN: FileCheck %s < %t/cdecl.h
 // RUN: %check-in-clang %t/cdecl.h
-// RUN: %check-in-clang -fno-modules %t/cdecl.h -include Foundation.h -include ctypes.h -include CoreFoundation.h
+// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/cdecl.h -include Foundation.h -include ctypes.h -include CoreFoundation.h
 
 // REQUIRES: objc_interop
 

test/PrintAsObjC/classes.swift

@@ -18,8 +18,8 @@
 // RUN: FileCheck %s < %t/classes.h
 // RUN: FileCheck --check-prefix=NEGATIVE %s < %t/classes.h
 // RUN: %check-in-clang %t/classes.h
-// RUN: not %check-in-clang -fno-modules %t/classes.h
-// RUN: %check-in-clang -fno-modules %t/classes.h -include Foundation.h -include CoreFoundation.h -include objc_generics.h
+// RUN: not %check-in-clang -fno-modules -Qunused-arguments %t/classes.h
+// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/classes.h -include Foundation.h -include CoreFoundation.h -include objc_generics.h
 
 // CHECK-NOT: AppKit;
 // CHECK-NOT: Properties;

test/PrintAsObjC/empty.swift

@@ -3,11 +3,11 @@
 // RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) %s -parse -emit-objc-header-path %t/empty.h
 // RUN: FileCheck %s < %t/empty.h
 // RUN: %check-in-clang -std=c99 %t/empty.h
-// RUN: %check-in-clang -std=c99 -fno-modules %t/empty.h
+// RUN: %check-in-clang -std=c99 -fno-modules -Qunused-arguments %t/empty.h
 // RUN: not %check-in-clang -I %S/Inputs/clang-headers %t/empty.h 2>&1 | FileCheck %s --check-prefix=CUSTOM-OBJC-PROLOGUE
 
 // Make sure we can handle two bridging headers. rdar://problem/22702104
-// RUN: %check-in-clang -include %t/empty.h -std=c99 -fno-modules %t/empty.h
+// RUN: %check-in-clang -include %t/empty.h -std=c99 -fno-modules -Qunused-arguments %t/empty.h
 
 // REQUIRES: objc_interop
 

test/PrintAsObjC/enums.swift

@@ -5,7 +5,7 @@
 // RUN: FileCheck %s < %t/enums.h
 // RUN: FileCheck -check-prefix=NEGATIVE %s < %t/enums.h
 // RUN: %check-in-clang %t/enums.h
-// RUN: %check-in-clang -fno-modules %t/enums.h -include Foundation.h -include ctypes.h -include CoreFoundation.h
+// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/enums.h -include Foundation.h -include ctypes.h -include CoreFoundation.h
 
 // REQUIRES: objc_interop
 

test/PrintAsObjC/simd.swift

@@ -12,7 +12,7 @@
 // RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk-nosource -I %t) -parse-as-library %t/simd_test.swiftmodule -parse -emit-objc-header-path %t/simd.h -import-objc-header %S/../Inputs/empty.h -disable-objc-attr-requires-foundation-module
 // RUN: FileCheck %s < %t/simd.h
 // RUN: %check-in-clang %t/simd.h
-// RUN: %check-in-clang -fno-modules %t/simd.h -include Foundation.h
+// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/simd.h -include Foundation.h
 
 // REQUIRES: objc_interop