Subzero: Add sandboxing for x86-32.

src/IceTargetLowering.cpp

 //===- subzero/src/IceTargetLowering.cpp - Basic lowering implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the skeleton of the TargetLowering class,
@@ skipping 200 matching lines @@
     break;
   case Inst::Store:
     lowerStore(llvm::dyn_cast<InstStore>(Inst));
     break;
   case Inst::Switch:
     lowerSwitch(llvm::dyn_cast<InstSwitch>(Inst));
     break;
   case Inst::Unreachable:
     lowerUnreachable(llvm::dyn_cast<InstUnreachable>(Inst));
     break;
+  case Inst::BundleLock:
+  case Inst::BundleUnlock:
   case Inst::FakeDef:
   case Inst::FakeUse:
   case Inst::FakeKill:
   case Inst::Target:
     // These are all Target instruction types and shouldn't be
     // encountered at this stage.
     Func->setError("Can't lower unsupported instruction type");
     break;
   }
 
@@ skipping 36 matching lines @@
   if (Target == Target_ARM64)
     return std::unique_ptr<TargetDataLowering>(TargetDataARM64::create(Ctx));
 #endif
   llvm_unreachable("Unsupported target");
   return nullptr;
 }
 
 TargetDataLowering::~TargetDataLowering() {}
 
 } // end of namespace Ice