Add Smi::Zero and replace all Smi::FromInt(0) calls

src/crankshaft/lithium-codegen.cc

 // Copyright 2013 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/crankshaft/lithium-codegen.h"
 
 #include <sstream>
 
 #if V8_TARGET_ARCH_IA32
 #include "src/crankshaft/ia32/lithium-ia32.h"  // NOLINT
@@ skipping 310 matching lines @@
   Handle<ByteArray> translations =
       translations_.CreateByteArray(isolate()->factory());
   data->SetTranslationByteArray(*translations);
   data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_));
   data->SetOptimizationId(Smi::FromInt(info_->optimization_id()));
   if (info_->IsOptimizing()) {
     // Reference to shared function info does not change between phases.
     AllowDeferredHandleDereference allow_handle_dereference;
     data->SetSharedFunctionInfo(*info_->shared_info());
   } else {
-    data->SetSharedFunctionInfo(Smi::FromInt(0));
+    data->SetSharedFunctionInfo(Smi::kZero);
   }
-  data->SetWeakCellCache(Smi::FromInt(0));
+  data->SetWeakCellCache(Smi::kZero);
 
   Handle<FixedArray> literals =
       factory()->NewFixedArray(deoptimization_literals_.length(), TENURED);
   {
     AllowDeferredHandleDereference copy_handles;
     for (int i = 0; i < deoptimization_literals_.length(); i++) {
       literals->set(i, *deoptimization_literals_[i]);
     }
     data->SetLiteralArray(*literals);
   }
@@ skipping 31 matching lines @@
 
 Deoptimizer::DeoptInfo LCodeGenBase::MakeDeoptInfo(
     LInstruction* instr, DeoptimizeReason deopt_reason, int deopt_id) {
   Deoptimizer::DeoptInfo deopt_info(instr->hydrogen_value()->position(),
                                     deopt_reason, deopt_id);
   return deopt_info;
 }
 
 }  // namespace internal
 }  // namespace v8