TypeofMode replaces TypeofState and ContextualMode.

src/arm64/full-codegen-arm64.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/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 1339 matching lines @@
     __ Mov(StoreDescriptor::NameRegister(),
            Operand(isolate()->factory()->home_object_symbol()));
     __ Peek(StoreDescriptor::ValueRegister(), offset * kPointerSize);
     if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
     CallStoreIC();
   }
 }
 
 
 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
-                                                      TypeofState typeof_state,
+                                                      TypeofMode typeof_mode,
                                                       Label* slow) {
   Register current = cp;
   Register next = x10;
   Register temp = x11;
 
   Scope* s = scope();
   while (s != NULL) {
     if (s->num_heap_slots() > 0) {
       if (s->calls_sloppy_eval()) {
         // Check that extension is NULL.
@@ skipping 23 matching lines @@
     __ Ldr(temp, ContextMemOperand(next, Context::EXTENSION_INDEX));
     __ Cbnz(temp, slow);
     // Load next context in chain.
     __ Ldr(next, ContextMemOperand(next, Context::PREVIOUS_INDEX));
     __ B(&loop);
     __ 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 = cp;
   Register next = x10;
   Register temp = x11;
 
@@ skipping 14 matching lines @@
   __ Cbnz(temp, slow);
 
   // This function is used only for loads, not stores, so it's safe to
   // return an cp-based operand (the write barrier cannot be allowed to
   // destroy the cp register).
   return ContextMemOperand(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);
     __ B(done);
   } else if (var->mode() == DYNAMIC_LOCAL) {
     Variable* local = var->local_if_not_shadowed();
     __ Ldr(x0, ContextSlotOperandCheckExtensions(local, slow));
     if (local->mode() == LET || local->mode() == CONST ||
         local->mode() == CONST_LEGACY) {
       __ JumpIfNotRoot(x0, Heap::kTheHoleValueRootIndex, done);
       if (local->mode() == CONST_LEGACY) {
         __ LoadRoot(x0, Heap::kUndefinedValueRootIndex);
       } else {  // LET || CONST
         __ Mov(x0, Operand(var->name()));
         __ Push(x0);
         __ CallRuntime(Runtime::kThrowReferenceError, 1);
       }
     }
     __ B(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));
   if (var->IsGlobalSlot()) {
     DCHECK(var->index() > 0);
     DCHECK(var->IsStaticGlobalObjectProperty());
     // Each var occupies two slots in the context: for reads and writes.
     int slot_index = var->index();
     int depth = scope()->ContextChainLength(var->scope());
     __ Mov(LoadGlobalViaContextDescriptor::DepthRegister(),
            Operand(Smi::FromInt(depth)));
     __ Mov(LoadGlobalViaContextDescriptor::SlotRegister(),
            Operand(Smi::FromInt(slot_index)));
     __ Mov(LoadGlobalViaContextDescriptor::NameRegister(),
            Operand(var->name()));
     LoadGlobalViaContextStub stub(isolate(), depth);
     __ CallStub(&stub);
 
   } else {
     __ Ldr(LoadDescriptor::ReceiverRegister(), GlobalObjectMemOperand());
     __ Mov(LoadDescriptor::NameRegister(), Operand(var->name()));
     __ Mov(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(x0);
       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 variable"
                               : "Stack variable");
       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 53 matching lines @@
         }
       }
       context()->Plug(var);
       break;
     }
 
     case VariableLocation::LOOKUP: {
       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);
       Comment cmnt(masm_, "Lookup variable");
       __ Mov(x1, Operand(var->name()));
       __ Push(cp, x1);  // Context and 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(x0);
       break;
     }
   }
 }
 
@@ skipping 516 matching lines @@
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetExpressionPosition(prop);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!prop->IsSuperAccess());
 
   __ Mov(LoadDescriptor::NameRegister(), Operand(key->value()));
   __ Mov(LoadDescriptor::SlotRegister(),
          SmiFromSlot(prop->PropertyFeedbackSlot()));
-  CallLoadIC(NOT_CONTEXTUAL, language_mode());
+  CallLoadIC(NOT_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 2293 matching lines @@
   __ Ldr(x10, GlobalObjectMemOperand());
   __ Ldr(LoadDescriptor::ReceiverRegister(),
          FieldMemOperand(x10, GlobalObject::kBuiltinsOffset));
   __ Push(LoadDescriptor::ReceiverRegister());
 
   // Load the function from the receiver.
   Handle<String> name = expr->name();
   __ Mov(LoadDescriptor::NameRegister(), Operand(name));
   __ Mov(LoadDescriptor::SlotRegister(),
          SmiFromSlot(expr->CallRuntimeFeedbackSlot()));
-  CallLoadIC(NOT_CONTEXTUAL);
+  CallLoadIC(NOT_INSIDE_TYPEOF);
 }
 
 
 void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
 
   SetCallPosition(expr, arg_count);
   CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS);
   __ Peek(x1, (arg_count + 1) * kPointerSize);
@@ skipping 764 matching lines @@
       __ Drop(1);  // The function is still on the stack; drop it.
 
       // if (!result.done) goto l_try;
       __ Bind(&l_loop);
       __ Move(load_receiver, x0);
 
       __ Push(load_receiver);                               // save result
       __ LoadRoot(load_name, Heap::kdone_stringRootIndex);  // "done"
       __ Mov(LoadDescriptor::SlotRegister(),
              SmiFromSlot(expr->DoneFeedbackSlot()));
-      CallLoadIC(NOT_CONTEXTUAL);                           // x0=result.done
+      CallLoadIC(NOT_INSIDE_TYPEOF);  // x0=result.done
       // The ToBooleanStub argument (result.done) is in x0.
       Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate());
       CallIC(bool_ic);
       __ Cbz(x0, &l_try);
 
       // result.value
       __ Pop(load_receiver);                                 // result
       __ LoadRoot(load_name, Heap::kvalue_stringRootIndex);  // "value"
       __ Mov(LoadDescriptor::SlotRegister(),
              SmiFromSlot(expr->ValueFeedbackSlot()));
-      CallLoadIC(NOT_CONTEXTUAL);                            // x0=result.value
+      CallLoadIC(NOT_INSIDE_TYPEOF);                         // x0=result.value
       context()->DropAndPlug(2, x0);                         // drop iter and g
       break;
     }
   }
 }
 
 
 void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
     Expression *value,
     JSGeneratorObject::ResumeMode resume_mode) {
@@ skipping 344 matching lines @@
   }
 
   return INTERRUPT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64