Subzero: Add -Wshadow to the build.

src/IceCompileServer.cpp

 //===- subzero/src/IceCompileServer.cpp - Compile server ------------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// This file defines the basic commandline-based compile server.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceCompileServer.h"
 
 #include "IceClFlags.h"
 #include "IceClFlagsExtra.h"
 #include "IceELFStreamer.h"
 #include "IceGlobalContext.h"
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-parameter"
+#pragma clang diagnostic ignored "-Wshadow"
 // Include code to handle converting textual bitcode records to binary (for
 // INPUT_IS_TEXTUAL_BITCODE).
 #include "llvm/Bitcode/NaCl/NaClBitcodeMungeUtils.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/raw_os_ostream.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/StreamingMemoryObject.h"
 #pragma clang diagnostic pop
 
@@ skipping 138 matching lines @@
     });
     CompileThread.join();
   } else {
     getCompiler().run(ExtraFlags, *Ctx.get(), std::move(InputStream));
   }
   transferErrorCode(getReturnValue(
       ExtraFlags, static_cast<ErrorCodes>(Ctx->getErrorStatus()->value())));
 }
 
 } // end of namespace Ice