[modules] Introduce new VariableLocation for module imports/exports.

src/full-codegen/mips/full-codegen-mips.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_MIPS
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 780 matching lines @@
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ VariableDeclaration");
       DCHECK_EQ(VAR, variable->mode());
       DCHECK(!variable->binding_needs_init());
       __ li(a2, Operand(variable->name()));
       __ Push(a2);
       __ CallRuntime(Runtime::kDeclareEvalVar);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }
+
+    case VariableLocation::MODULE:
+      UNREACHABLE();
   }
 }
 
 
 void FullCodeGenerator::VisitFunctionDeclaration(
     FunctionDeclaration* declaration) {
   VariableProxy* proxy = declaration->proxy();
   Variable* variable = proxy->var();
   switch (variable->location()) {
     case VariableLocation::GLOBAL:
@@ skipping 39 matching lines @@
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ FunctionDeclaration");
       __ li(a2, Operand(variable->name()));
       PushOperand(a2);
       // Push initial value for function declaration.
       VisitForStackValue(declaration->fun());
       CallRuntimeWithOperands(Runtime::kDeclareEvalFunction);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }
+
+    case VariableLocation::MODULE:
+      UNREACHABLE();
   }
 }
 
 
 void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) {
   // Call the runtime to declare the globals.
   __ li(a1, Operand(pairs));
   __ li(a0, Operand(Smi::FromInt(DeclareGlobalsFlags())));
   __ EmitLoadTypeFeedbackVector(a2);
   __ Push(a1, a0, a2);
@@ skipping 469 matching lines @@
       EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done);
       __ bind(&slow);
       __ Push(var->name());
       Runtime::FunctionId function_id =
           typeof_mode == NOT_INSIDE_TYPEOF
               ? Runtime::kLoadLookupSlot
               : Runtime::kLoadLookupSlotInsideTypeof;
       __ CallRuntime(function_id);
       __ bind(&done);
       context()->Plug(v0);
+      break;
     }
+
+    case VariableLocation::MODULE:
+      UNREACHABLE();
   }
 }
 
 
 void FullCodeGenerator::EmitAccessor(ObjectLiteralProperty* property) {
   Expression* expression = (property == NULL) ? NULL : property->value();
   if (expression == NULL) {
     __ LoadRoot(a1, Heap::kNullValueRootIndex);
     PushOperand(a1);
   } else {
@@ skipping 2408 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OnStackReplacement()->entry()));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS