Subzero: Add -Wshadow to the build.

src/IceTargetLoweringMIPS32.cpp

 //===- subzero/src/IceTargetLoweringMIPS32.cpp - MIPS32 lowering ----------===//
 //
 //                        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 the TargetLoweringMIPS32 class, which consists almost
 /// entirely of the lowering sequence for each high-level instruction.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceTargetLoweringMIPS32.h"
 
 #include "IceCfg.h"
 #include "IceCfgNode.h"
 #include "IceClFlags.h"
 #include "IceDefs.h"
 #include "IceELFObjectWriter.h"
 #include "IceGlobalInits.h"
 #include "IceInstMIPS32.h"
 #include "IceLiveness.h"
 #include "IceOperand.h"
 #include "IceRegistersMIPS32.h"
 #include "IceTargetLoweringMIPS32.def"
 #include "IceUtils.h"
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
+#pragma clang diagnostic ignored "-Wshadow"
 #include "llvm/Support/MathExtras.h"
+#pragma clang diagnostic pop
 
 namespace Ice {
 
 namespace {
 void UnimplementedError(const ClFlags &Flags) {
   if (!Flags.getSkipUnimplemented()) {
     // Use llvm_unreachable instead of report_fatal_error, which gives better
     // stack traces.
     llvm_unreachable("Not yet implemented");
     abort();
@@ skipping 669 matching lines @@
 void TargetDataMIPS32::lowerConstants() {
   if (Ctx->getFlags().getDisableTranslation())
     return;
   UnimplementedError(Ctx->getFlags());
 }
 
 TargetHeaderMIPS32::TargetHeaderMIPS32(GlobalContext *Ctx)
     : TargetHeaderLowering(Ctx) {}
 
 } // end of namespace Ice