Subzero: Update tests and build scripts for sandboxing.

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 87 matching lines @@
     return IceTargetARM64::create(Func);
 #endif
   Func->setError("Unsupported target");
   return nullptr;
 }
 
 TargetLowering::TargetLowering(Cfg *Func)
     : Func(Func), Ctx(Func->getContext()),
       RandomizeRegisterAllocation(CLRandomizeRegisterAllocation),
       HasComputedFrame(false), CallsReturnsTwice(false), StackAdjustment(0),
-      Context() {}
+      Context(), SnapshotStackAdjustment(0) {}
 
 std::unique_ptr<Assembler> TargetLowering::createAssembler(TargetArch Target,
                                                            Cfg *Func) {
   // These statements can be #ifdef'd to specialize the assembler
   // to a subset of the available targets.  TODO: use CRTP.
   if (Target == Target_X8632)
     return std::unique_ptr<Assembler>(new x86::AssemblerX86());
   Func->setError("Unsupported target");
   return nullptr;
 }
@@ skipping 150 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