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

src/full-codegen/arm/full-codegen-arm.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_ARM
 
 #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 337 matching lines @@
   { Comment cmnt(masm_, "[ return <undefined>;");
     __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
   }
   EmitReturnSequence();
 
   // Force emit the constant pool, so it doesn't get emitted in the middle
   // of the back edge table.
   masm()->CheckConstPool(true, false);
 }
 
-
-void FullCodeGenerator::ClearAccumulator() {
-  __ mov(r0, Operand(Smi::FromInt(0)));
-}
-
+void FullCodeGenerator::ClearAccumulator() { __ mov(r0, Operand(Smi::kZero)); }
 
 void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) {
   __ mov(r2, Operand(profiling_counter_));
   __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset));
   __ sub(r3, r3, Operand(Smi::FromInt(delta)), SetCC);
   __ str(r3, FieldMemOperand(r2, Cell::kValueOffset));
 }
 
 
 #ifdef CAN_USE_ARMV7_INSTRUCTIONS
@@ skipping 675 matching lines @@
   __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
   __ LoadRoot(ip, Heap::kMetaMapRootIndex);
   __ cmp(r2, ip);
   __ b(ne, &fixed_array);
 
   // We got a map in register r0. Get the enumeration cache from it.
   Label no_descriptors;
   __ bind(&use_cache);
 
   __ EnumLength(r1, r0);
-  __ cmp(r1, Operand(Smi::FromInt(0)));
+  __ cmp(r1, Operand(Smi::kZero));
   __ b(eq, &no_descriptors);
 
   __ LoadInstanceDescriptors(r0, r2);
   __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheOffset));
   __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheBridgeCacheOffset));
 
   // Set up the four remaining stack slots.
   __ push(r0);  // Map.
-  __ mov(r0, Operand(Smi::FromInt(0)));
+  __ mov(r0, Operand(Smi::kZero));
   // Push enumeration cache, enumeration cache length (as smi) and zero.
   __ Push(r2, r1, r0);
   __ jmp(&loop);
 
   __ bind(&no_descriptors);
   __ Drop(1);
   __ jmp(&exit);
 
   // We got a fixed array in register r0. Iterate through that.
   __ bind(&fixed_array);
 
   __ mov(r1, Operand(Smi::FromInt(1)));  // Smi(1) indicates slow check
   __ Push(r1, r0);  // Smi and array
   __ ldr(r1, FieldMemOperand(r0, FixedArray::kLengthOffset));
   __ Push(r1);  // Fixed array length (as smi).
   PrepareForBailoutForId(stmt->PrepareId(), BailoutState::NO_REGISTERS);
-  __ mov(r0, Operand(Smi::FromInt(0)));
+  __ mov(r0, Operand(Smi::kZero));
   __ Push(r0);  // Initial index.
 
   // Generate code for doing the condition check.
   __ bind(&loop);
   SetExpressionAsStatementPosition(stmt->each());
 
   // Load the current count to r0, load the length to r1.
   __ Ldrd(r0, r1, MemOperand(sp, 0 * kPointerSize));
   __ cmp(r0, r1);  // Compare to the array length.
   __ b(hs, loop_statement.break_label());
@@ skipping 825 matching lines @@
     case Token::MUL: {
       __ SmiUntag(ip, right);
       __ smull(scratch1, scratch2, left, ip);
       __ mov(ip, Operand(scratch1, ASR, 31));
       __ cmp(ip, Operand(scratch2));
       __ b(ne, &stub_call);
       __ cmp(scratch1, Operand::Zero());
       __ mov(right, Operand(scratch1), LeaveCC, ne);
       __ b(ne, &done);
       __ add(scratch2, right, Operand(left), SetCC);
-      __ mov(right, Operand(Smi::FromInt(0)), LeaveCC, pl);
+      __ mov(right, Operand(Smi::kZero), LeaveCC, pl);
       __ b(mi, &stub_call);
       break;
     }
     case Token::BIT_OR:
       __ orr(right, left, Operand(right));
       break;
     case Token::BIT_AND:
       __ and_(right, left, Operand(right));
       break;
     case Token::BIT_XOR:
@@ skipping 1127 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()) {
-      __ mov(ip, Operand(Smi::FromInt(0)));
+      __ mov(ip, Operand(Smi::kZero));
       PushOperand(ip);
     }
     switch (assign_type) {
       case NAMED_PROPERTY: {
         // Put the object both on the stack and in the register.
         VisitForStackValue(prop->obj());
         __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
         EmitNamedPropertyLoad(prop);
         break;
       }
@@ skipping 643 matching lines @@
   DCHECK(interrupt_address ==
          isolate->builtins()->OnStackReplacement()->entry());
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM