Extend TF test coverage to unsupported targets.

src/compiler/arm64/code-generator-arm64.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm64/macro-assembler-arm64.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/scopes.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
+#if V8_TURBOFAN_TARGET
+
 #define __ masm()->
 
 
 // Adds Arm64-specific methods to convert InstructionOperands.
 class Arm64OperandConverter V8_FINAL : public InstructionOperandConverter {
  public:
   Arm64OperandConverter(CodeGenerator* gen, Instruction* instr)
       : InstructionOperandConverter(gen, instr) {}
 
   Register InputRegister32(int index) {
@@ skipping 815 matching lines @@
   }
   Address instr_address = code->instruction_start() + start_pc;
 
   v8::internal::Instruction* instr =
       reinterpret_cast<v8::internal::Instruction*>(instr_address);
   return instr->IsMovz() && instr->Rd() == xzr.code() && instr->SixtyFourBits();
 }
 
 #endif  // DEBUG
 
+#endif  // V8_TURBOFAN_TARGET
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8