MIPS: Renamed "symbols" to "internalized strings" throughout the code base, in preparation of the i…

src/mips/lithium-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2297 matching lines @@
     __ Branch(is_true, ne, temp2, Operand(JS_FUNCTION_TYPE));
   } else {
     __ Branch(is_false, ne, temp2, Operand(JS_FUNCTION_TYPE));
   }
 
   // temp now contains the constructor function. Grab the
   // instance class name from there.
   __ lw(temp, FieldMemOperand(temp, JSFunction::kSharedFunctionInfoOffset));
   __ lw(temp, FieldMemOperand(temp,
                                SharedFunctionInfo::kInstanceClassNameOffset));
-  // The class name we are testing against is a symbol because it's a literal.
-  // The name in the constructor is a symbol because of the way the context is
-  // booted.  This routine isn't expected to work for random API-created
+  // The class name we are testing against is internalized since it's a literal.
+  // The name in the constructor is internalized because of the way the context
+  // is booted.  This routine isn't expected to work for random API-created
   // classes and it doesn't have to because you can't access it with natives
-  // syntax.  Since both sides are symbols it is sufficient to use an identity
-  // comparison.
+  // syntax.  Since both sides are internalized it is sufficient to use an
+  // identity comparison.
 
   // End with the address of this class_name instance in temp register.
   // On MIPS, the caller must do the comparison with Handle<String>class_name.
 }
 
 
 void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) {
   Register input = ToRegister(instr->value());
   Register temp = scratch0();
   Register temp2 = ToRegister(instr->temp());
@@ skipping 3353 matching lines @@
                                  Label* false_label,
                                  Register input,
                                  Handle<String> type_name,
                                  Register& cmp1,
                                  Operand& cmp2) {
   // This function utilizes the delay slot heavily. This is used to load
   // values that are always usable without depending on the type of the input
   // register.
   Condition final_branch_condition = kNoCondition;
   Register scratch = scratch0();
-  if (type_name->Equals(heap()->number_symbol())) {
+  if (type_name->Equals(heap()->number_string())) {
     __ JumpIfSmi(input, true_label);
     __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset));
     __ LoadRoot(at, Heap::kHeapNumberMapRootIndex);
     cmp1 = input;
     cmp2 = Operand(at);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->string_symbol())) {
+  } else if (type_name->Equals(heap()->string_string())) {
     __ JumpIfSmi(input, false_label);
     __ GetObjectType(input, input, scratch);
     __ Branch(USE_DELAY_SLOT, false_label,
               ge, scratch, Operand(FIRST_NONSTRING_TYPE));
     // input is an object so we can load the BitFieldOffset even if we take the
     // other branch.
     __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset));
     __ And(at, at, 1 << Map::kIsUndetectable);
     cmp1 = at;
     cmp2 = Operand(zero_reg);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->boolean_symbol())) {
+  } else if (type_name->Equals(heap()->boolean_string())) {
     __ LoadRoot(at, Heap::kTrueValueRootIndex);
     __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input));
     __ LoadRoot(at, Heap::kFalseValueRootIndex);
     cmp1 = at;
     cmp2 = Operand(input);
     final_branch_condition = eq;
 
-  } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_symbol())) {
+  } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_string())) {
     __ LoadRoot(at, Heap::kNullValueRootIndex);
     cmp1 = at;
     cmp2 = Operand(input);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->undefined_symbol())) {
+  } else if (type_name->Equals(heap()->undefined_string())) {
     __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
     __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input));
     // The first instruction of JumpIfSmi is an And - it is safe in the delay
     // slot.
     __ JumpIfSmi(input, false_label);
     // Check for undetectable objects => true.
     __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset));
     __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset));
     __ And(at, at, 1 << Map::kIsUndetectable);
     cmp1 = at;
     cmp2 = Operand(zero_reg);
     final_branch_condition = ne;
 
-  } else if (type_name->Equals(heap()->function_symbol())) {
+  } else if (type_name->Equals(heap()->function_string())) {
     STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
     __ JumpIfSmi(input, false_label);
     __ GetObjectType(input, scratch, input);
     __ Branch(true_label, eq, input, Operand(JS_FUNCTION_TYPE));
     cmp1 = input;
     cmp2 = Operand(JS_FUNCTION_PROXY_TYPE);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->object_symbol())) {
+  } else if (type_name->Equals(heap()->object_string())) {
     __ JumpIfSmi(input, false_label);
     if (!FLAG_harmony_typeof) {
       __ LoadRoot(at, Heap::kNullValueRootIndex);
       __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input));
     }
     // input is an object, it is safe to use GetObjectType in the delay slot.
     __ GetObjectType(input, input, scratch);
     __ Branch(USE_DELAY_SLOT, false_label,
               lt, scratch, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
     // Still an object, so the InstanceType can be loaded.
@@ skipping 272 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal