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

src/crankshaft/hydrogen.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/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 10211 matching lines @@
   if (!arguments->at(kBufferArg)->IsNullLiteral()) {
     CHECK_ALIVE(VisitForValue(arguments->at(kBufferArg)));
     buffer = Pop();
   } else {
     buffer = NULL;
   }
 
   HValue* byte_offset;
   bool is_zero_byte_offset;
 
-  if (arguments->at(kByteOffsetArg)->IsLiteral() &&
-      Smi::kZero ==
-          *static_cast<Literal*>(arguments->at(kByteOffsetArg))->value()) {
+  if (arguments->at(kByteOffsetArg)->IsLiteral()
+      && Smi::FromInt(0) ==
+      *static_cast<Literal*>(arguments->at(kByteOffsetArg))->value()) {
     byte_offset = Add<HConstant>(static_cast<int32_t>(0));
     is_zero_byte_offset = true;
   } else {
     CHECK_ALIVE(VisitForValue(arguments->at(kByteOffsetArg)));
     byte_offset = Pop();
     is_zero_byte_offset = false;
     DCHECK(buffer != NULL);
   }
 
   CHECK_ALIVE(VisitForValue(arguments->at(kByteLengthArg)));
@@ skipping 3038 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8