TypeofMode replaces TypeofState and ContextualMode.

src/x64/full-codegen-x64.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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 1315 matching lines @@
             isolate()->factory()->home_object_symbol());
     __ movp(StoreDescriptor::ValueRegister(),
             Operand(rsp, offset * kPointerSize));
     if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
     CallStoreIC();
   }
 }
 
 
 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
-                                                      TypeofState typeof_state,
+                                                      TypeofMode typeof_mode,
                                                       Label* slow) {
   Register context = rsi;
   Register temp = rdx;
 
   Scope* s = scope();
   while (s != NULL) {
     if (s->num_heap_slots() > 0) {
       if (s->calls_sloppy_eval()) {
         // Check that extension is NULL.
         __ cmpp(ContextOperand(context, Context::EXTENSION_INDEX),
@@ skipping 29 matching lines @@
     __ cmpp(ContextOperand(temp, Context::EXTENSION_INDEX), Immediate(0));
     __ j(not_equal, slow);
     // Load next context in chain.
     __ movp(temp, ContextOperand(temp, Context::PREVIOUS_INDEX));
     __ jmp(&next);
     __ bind(&fast);
   }
 
   // All extension objects were empty and it is safe to use a normal global
   // load machinery.
-  EmitGlobalVariableLoad(proxy, typeof_state);
+  EmitGlobalVariableLoad(proxy, typeof_mode);
 }
 
 
 MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var,
                                                                 Label* slow) {
   DCHECK(var->IsContextSlot());
   Register context = rsi;
   Register temp = rbx;
 
   for (Scope* s = scope(); s != var->scope(); s = s->outer_scope()) {
@@ skipping 14 matching lines @@
   __ j(not_equal, slow);
 
   // This function is used only for loads, not stores, so it's safe to
   // return an rsi-based operand (the write barrier cannot be allowed to
   // destroy the rsi register).
   return ContextOperand(context, var->index());
 }
 
 
 void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy,
-                                                  TypeofState typeof_state,
-                                                  Label* slow,
-                                                  Label* done) {
+                                                  TypeofMode typeof_mode,
+                                                  Label* slow, Label* done) {
   // Generate fast-case code for variables that might be shadowed by
   // eval-introduced variables.  Eval is used a lot without
   // introducing variables.  In those cases, we do not want to
   // perform a runtime call for all variables in the scope
   // containing the eval.
   Variable* var = proxy->var();
   if (var->mode() == DYNAMIC_GLOBAL) {
-    EmitLoadGlobalCheckExtensions(proxy, typeof_state, slow);
+    EmitLoadGlobalCheckExtensions(proxy, typeof_mode, slow);
     __ jmp(done);
   } else if (var->mode() == DYNAMIC_LOCAL) {
     Variable* local = var->local_if_not_shadowed();
     __ movp(rax, ContextSlotOperandCheckExtensions(local, slow));
     if (local->mode() == LET || local->mode() == CONST ||
         local->mode() == CONST_LEGACY) {
       __ CompareRoot(rax, Heap::kTheHoleValueRootIndex);
       __ j(not_equal, done);
       if (local->mode() == CONST_LEGACY) {
         __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
       } else {  // LET || CONST
         __ Push(var->name());
         __ CallRuntime(Runtime::kThrowReferenceError, 1);
       }
     }
     __ jmp(done);
   }
 }
 
 
 void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy,
-                                               TypeofState typeof_state) {
+                                               TypeofMode typeof_mode) {
   Variable* var = proxy->var();
   DCHECK(var->IsUnallocatedOrGlobalSlot() ||
          (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL));
   __ Move(LoadDescriptor::NameRegister(), var->name());
   __ movp(LoadDescriptor::ReceiverRegister(), GlobalObjectOperand());
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(proxy->VariableFeedbackSlot()));
-  // Inside typeof use a regular load, not a contextual load, to avoid
-  // a reference error.
-  CallLoadIC(typeof_state == NOT_INSIDE_TYPEOF ? CONTEXTUAL : NOT_CONTEXTUAL);
+  CallLoadIC(typeof_mode);
 }
 
 
 void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
-                                         TypeofState typeof_state) {
+                                         TypeofMode typeof_mode) {
   // Record position before possible IC call.
   SetExpressionPosition(proxy);
   PrepareForBailoutForId(proxy->BeforeId(), NO_REGISTERS);
   Variable* var = proxy->var();
 
   // Three cases: global variables, lookup variables, and all other types of
   // variables.
   switch (var->location()) {
     case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED: {
       Comment cmnt(masm_, "[ Global variable");
-      EmitGlobalVariableLoad(proxy, typeof_state);
+      EmitGlobalVariableLoad(proxy, typeof_mode);
       context()->Plug(rax);
       break;
     }
 
     case VariableLocation::PARAMETER:
     case VariableLocation::LOCAL:
     case VariableLocation::CONTEXT: {
-      DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_state);
+      DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_mode);
       Comment cmnt(masm_, var->IsContextSlot() ? "[ Context slot"
                                                : "[ Stack slot");
       if (var->binding_needs_init()) {
         // var->scope() may be NULL when the proxy is located in eval code and
         // refers to a potential outside binding. Currently those bindings are
         // always looked up dynamically, i.e. in that case
         //     var->location() == LOOKUP.
         // always holds.
         DCHECK(var->scope() != NULL);
 
@@ skipping 52 matching lines @@
       }
       context()->Plug(var);
       break;
     }
 
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ Lookup slot");
       Label done, slow;
       // Generate code for loading from variables potentially shadowed
       // by eval-introduced variables.
-      EmitDynamicLookupFastCase(proxy, typeof_state, &slow, &done);
+      EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done);
       __ bind(&slow);
       __ Push(rsi);  // Context.
       __ Push(var->name());
       Runtime::FunctionId function_id =
-          typeof_state == NOT_INSIDE_TYPEOF
+          typeof_mode == NOT_INSIDE_TYPEOF
               ? Runtime::kLoadLookupSlot
               : Runtime::kLoadLookupSlotNoReferenceError;
       __ CallRuntime(function_id, 2);
       __ bind(&done);
       context()->Plug(rax);
       break;
     }
   }
 }
 
@@ skipping 657 matching lines @@
       __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
       __ Drop(1);  // The function is still on the stack; drop it.
 
       // if (!result.done) goto l_try;
       __ bind(&l_loop);
       __ Move(load_receiver, rax);
       __ Push(load_receiver);                               // save result
       __ LoadRoot(load_name, Heap::kdone_stringRootIndex);  // "done"
       __ Move(LoadDescriptor::SlotRegister(),
               SmiFromSlot(expr->DoneFeedbackSlot()));
-      CallLoadIC(NOT_CONTEXTUAL);                           // rax=result.done
+      CallLoadIC(INSIDE_TYPEOF);  // rax=result.done
       Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate());
       CallIC(bool_ic);
       __ testp(result_register(), result_register());
       __ j(zero, &l_try);
 
       // result.value
       __ Pop(load_receiver);                             // result
       __ LoadRoot(load_name, Heap::kvalue_stringRootIndex);  // "value"
       __ Move(LoadDescriptor::SlotRegister(),
               SmiFromSlot(expr->ValueFeedbackSlot()));
-      CallLoadIC(NOT_CONTEXTUAL);                        // result.value in rax
+      CallLoadIC(INSIDE_TYPEOF);                         // result.value in rax
       context()->DropAndPlug(2, rax);                    // drop iter and g
       break;
     }
   }
 }
 
 
 void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
     Expression *value,
     JSGeneratorObject::ResumeMode resume_mode) {
@@ skipping 119 matching lines @@
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetExpressionPosition(prop);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!prop->IsSuperAccess());
 
   __ Move(LoadDescriptor::NameRegister(), key->value());
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
-  CallLoadIC(NOT_CONTEXTUAL, language_mode());
+  CallLoadIC(INSIDE_TYPEOF, language_mode());
 }
 
 
 void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) {
   // Stack: receiver, home_object
   SetExpressionPosition(prop);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!key->value()->IsSmi());
   DCHECK(prop->IsSuperAccess());
 
@@ skipping 2267 matching lines @@
 void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) {
   // Push the builtins object as receiver.
   __ movp(rax, GlobalObjectOperand());
   __ Push(FieldOperand(rax, GlobalObject::kBuiltinsOffset));
 
   // Load the function from the receiver.
   __ movp(LoadDescriptor::ReceiverRegister(), Operand(rsp, 0));
   __ Move(LoadDescriptor::NameRegister(), expr->name());
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(expr->CallRuntimeFeedbackSlot()));
-  CallLoadIC(NOT_CONTEXTUAL);
+  CallLoadIC(INSIDE_TYPEOF);
 }
 
 
 void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
 
   SetExpressionPosition(expr);
   CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS);
   __ movp(rdi, Operand(rsp, (arg_count + 1) * kPointerSize));
@@ skipping 789 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64