Subzero: Add -Wshadow to the build.

src/IceTypeConverter.cpp

 //===- subzero/src/IceTypeConverter.cpp - Convert ICE/LLVM Types ----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// This file implements how to convert LLVM types to ICE types, and ICE types
 /// to LLVM types.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceTypeConverter.h"
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
+#pragma clang diagnostic ignored "-Wshadow"
 #include "llvm/Support/raw_ostream.h"
+#pragma clang diagnostic pop
 
 namespace Ice {
 
 TypeConverter::TypeConverter(llvm::LLVMContext &Context) {
   addLLVMType(IceType_void, llvm::Type::getVoidTy(Context));
   llvm::Type *Type_i1 = llvm::IntegerType::get(Context, 1);
   llvm::Type *Type_i8 = llvm::IntegerType::get(Context, 8);
   llvm::Type *Type_i16 = llvm::IntegerType::get(Context, 16);
   llvm::Type *Type_i32 = llvm::IntegerType::get(Context, 32);
   llvm::Type *Type_f32 = llvm::Type::getFloatTy(Context);
@@ skipping 22 matching lines @@
   switch (LLVMTy->getTypeID()) {
   case llvm::Type::PointerTyID:
   case llvm::Type::FunctionTyID:
     return getPointerType();
   default:
     return Ice::IceType_NUM;
   }
 }
 
 } // end of Ice namespace.