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

src/full-codegen/x87/full-codegen-x87.cc

 // Copyright 2012 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.
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/full-codegen/full-codegen.h"
 #include "src/ast/compile-time-value.h"
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
@@ skipping 322 matching lines @@
   // Always emit a 'return undefined' in case control fell off the end of
   // the body.
   { Comment cmnt(masm_, "[ return <undefined>;");
     __ mov(eax, isolate()->factory()->undefined_value());
     EmitReturnSequence();
   }
 }
 
 
 void FullCodeGenerator::ClearAccumulator() {
-  __ Move(eax, Immediate(Smi::FromInt(0)));
+  __ Move(eax, Immediate(Smi::kZero));
 }
 
 
 void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) {
   __ mov(ebx, Immediate(profiling_counter_));
   __ sub(FieldOperand(ebx, Cell::kValueOffset),
          Immediate(Smi::FromInt(delta)));
 }
 
 
@@ skipping 617 matching lines @@
   __ cmp(FieldOperand(eax, HeapObject::kMapOffset),
          isolate()->factory()->meta_map());
   __ j(not_equal, &fixed_array);
 
 
   // We got a map in register eax. Get the enumeration cache from it.
   Label no_descriptors;
   __ bind(&use_cache);
 
   __ EnumLength(edx, eax);
-  __ cmp(edx, Immediate(Smi::FromInt(0)));
+  __ cmp(edx, Immediate(Smi::kZero));
   __ j(equal, &no_descriptors);
 
   __ LoadInstanceDescriptors(eax, ecx);
   __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheOffset));
   __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheBridgeCacheOffset));
 
   // Set up the four remaining stack slots.
   __ push(eax);  // Map.
   __ push(ecx);  // Enumeration cache.
   __ push(edx);  // Number of valid entries for the map in the enum cache.
-  __ push(Immediate(Smi::FromInt(0)));  // Initial index.
+  __ push(Immediate(Smi::kZero));  // Initial index.
   __ jmp(&loop);
 
   __ bind(&no_descriptors);
   __ add(esp, Immediate(kPointerSize));
   __ jmp(&exit);
 
   // We got a fixed array in register eax. Iterate through that.
   __ bind(&fixed_array);
 
   __ push(Immediate(Smi::FromInt(1)));  // Smi(1) indicates slow check
   __ push(eax);  // Array
   __ mov(eax, FieldOperand(eax, FixedArray::kLengthOffset));
   __ push(eax);  // Fixed array length (as smi).
   PrepareForBailoutForId(stmt->PrepareId(), BailoutState::NO_REGISTERS);
-  __ push(Immediate(Smi::FromInt(0)));  // Initial index.
+  __ push(Immediate(Smi::kZero));  // Initial index.
 
   // Generate code for doing the condition check.
   __ bind(&loop);
   SetExpressionAsStatementPosition(stmt->each());
 
   __ mov(eax, Operand(esp, 0 * kPointerSize));  // Get the current index.
   __ cmp(eax, Operand(esp, 1 * kPointerSize));  // Compare to the array length.
   __ j(above_equal, loop_statement.break_label());
 
   // Get the current entry of the array into register eax.
@@ skipping 1938 matching lines @@
   LhsKind assign_type = Property::GetAssignType(prop);
 
   // Evaluate expression and get value.
   if (assign_type == VARIABLE) {
     DCHECK(expr->expression()->AsVariableProxy()->var() != NULL);
     AccumulatorValueContext context(this);
     EmitVariableLoad(expr->expression()->AsVariableProxy());
   } else {
     // Reserve space for result of postfix operation.
     if (expr->is_postfix() && !context()->IsEffect()) {
-      PushOperand(Smi::FromInt(0));
+      PushOperand(Smi::kZero);
     }
     switch (assign_type) {
       case NAMED_PROPERTY: {
         // Put the object both on the stack and in the register.
         VisitForStackValue(prop->obj());
         __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0));
         EmitNamedPropertyLoad(prop);
         break;
       }
 
@@ skipping 577 matching lines @@
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87