[interpreter] Adds interpreter cctests.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1269683002

Cr-Commit-Position: refs/heads/master@{#30087}

src/interpreter/interpreter.cc

@@ -53,6 +53,7 @@ void Interpreter::Initialize(bool create_heap_objects) {
 // Load literal '0' into the accumulator.
 void Interpreter::DoLdaZero(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -61,6 +62,7 @@ void Interpreter::DoLdaZero(compiler::InterpreterAssembler* assembler) {
 // Load an 8-bit integer literal into the accumulator as a Smi.
 void Interpreter::DoLdaSmi8(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement 8-bit integer to SMI promotion.
+  __ Dispatch();
 }
 
 
@@ -69,6 +71,7 @@ void Interpreter::DoLdaSmi8(compiler::InterpreterAssembler* assembler) {
 // Load Undefined into the accumulator.
 void Interpreter::DoLdaUndefined(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -77,6 +80,7 @@ void Interpreter::DoLdaUndefined(compiler::InterpreterAssembler* assembler) {
 // Load Null into the accumulator.
 void Interpreter::DoLdaNull(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -85,6 +89,7 @@ void Interpreter::DoLdaNull(compiler::InterpreterAssembler* assembler) {
 // Load TheHole into the accumulator.
 void Interpreter::DoLdaTheHole(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -93,6 +98,7 @@ void Interpreter::DoLdaTheHole(compiler::InterpreterAssembler* assembler) {
 // Load True into the accumulator.
 void Interpreter::DoLdaTrue(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -101,6 +107,7 @@ void Interpreter::DoLdaTrue(compiler::InterpreterAssembler* assembler) {
 // Load False into the accumulator.
 void Interpreter::DoLdaFalse(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -109,6 +116,7 @@ void Interpreter::DoLdaFalse(compiler::InterpreterAssembler* assembler) {
 // Load accumulator with value from register <src>.
 void Interpreter::DoLdar(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -117,6 +125,7 @@ void Interpreter::DoLdar(compiler::InterpreterAssembler* assembler) {
 // Store accumulator to register <dst>.
 void Interpreter::DoStar(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -125,6 +134,7 @@ void Interpreter::DoStar(compiler::InterpreterAssembler* assembler) {
 // Add register <src> to accumulator.
 void Interpreter::DoAdd(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -133,6 +143,7 @@ void Interpreter::DoAdd(compiler::InterpreterAssembler* assembler) {
 // Subtract register <src> from accumulator.
 void Interpreter::DoSub(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 
@@ -141,6 +152,7 @@ void Interpreter::DoSub(compiler::InterpreterAssembler* assembler) {
 // Multiply accumulator by register <src>.
 void Interpreter::DoMul(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement add register to accumulator.
+  __ Dispatch();
 }
 
 
@@ -149,6 +161,7 @@ void Interpreter::DoMul(compiler::InterpreterAssembler* assembler) {
 // Divide register <src> by accumulator.
 void Interpreter::DoDiv(compiler::InterpreterAssembler* assembler) {
   // TODO(rmcilroy) Implement.
+  __ Dispatch();
 }
 
 

src/isolate.h

@@ -1138,6 +1138,8 @@ class Isolate {
   void RegisterCancelableTask(Cancelable* task);
   void RemoveCancelableTask(Cancelable* task);
 
+  interpreter::Interpreter* interpreter() const { return interpreter_; }
+
  protected:
   explicit Isolate(bool enable_serializer);
 

test/cctest/cctest.gyp

@@ -82,6 +82,7 @@
         'compiler/test-run-variables.cc',
         'compiler/test-simplified-lowering.cc',
         'cctest.cc',
+        'interpreter/test-interpreter.cc',
         'gay-fixed.cc',
         'gay-precision.cc',
         'gay-shortest.cc',

test/cctest/interpreter/test-interpreter.cc

+// Copyright 2015 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"
+
+#include "src/execution.h"
+#include "src/handles.h"
+#include "src/interpreter/bytecode-array-builder.h"
+#include "src/interpreter/interpreter.h"
+#include "test/cctest/cctest.h"
+
+namespace v8 {
+namespace internal {
+
+class InterpreterCallable {
+ public:
+  InterpreterCallable(Isolate* isolate, Handle<JSFunction> function)
+      : isolate_(isolate), function_(function) {}
+  virtual ~InterpreterCallable() {}
+
+  MaybeHandle<Object> operator()() {
+    return Execution::Call(isolate_, function_,
+                           isolate_->factory()->undefined_value(), 0, nullptr,
+                           false);
+  }
+
+ private:
+  Isolate* isolate_;
+  Handle<JSFunction> function_;
+};
+
+class InterpreterTester {
+ public:
+  InterpreterTester(Isolate* isolate, Handle<BytecodeArray> bytecode)
+      : isolate_(isolate), function_(GetBytecodeFunction(isolate, bytecode)) {
+    i::FLAG_ignition = true;
+    Handle<FixedArray> empty_array = isolate->factory()->empty_fixed_array();
+    Handle<FixedArray> interpreter_table =
+        isolate->factory()->interpreter_table();
+    if (interpreter_table.is_identical_to(empty_array)) {
+      // Ensure handler table is generated.
+      isolate->interpreter()->Initialize(true);
+    }
+  }
+  virtual ~InterpreterTester() {}
+
+  InterpreterCallable GetCallable() {
+    return InterpreterCallable(isolate_, function_);
+  }
+
+ private:
+  Isolate* isolate_;
+  Handle<JSFunction> function_;
+
+  static Handle<JSFunction> GetBytecodeFunction(
+      Isolate* isolate, Handle<BytecodeArray> bytecode_array) {
+    Handle<JSFunction> function = v8::Utils::OpenHandle(
+        *v8::Handle<v8::Function>::Cast(CompileRun("(function(){})")));
+    function->ReplaceCode(*isolate->builtins()->InterpreterEntryTrampoline());
+    function->shared()->set_function_data(*bytecode_array);
+    return function;
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(InterpreterTester);
+};
+
+}  // namespace internal
+}  // namespace v8
+
+using namespace v8::internal;
+using namespace v8::internal::interpreter;
+
+TEST(TestInterpreterReturn) {
+  InitializedHandleScope handles;
+  Handle<Object> undefined_value =
+      handles.main_isolate()->factory()->undefined_value();
+
+  BytecodeArrayBuilder builder(handles.main_isolate());
+  // TODO(rmcilroy) set to 0 once BytecodeArray update to allow zero size
+  // register file.
+  builder.set_locals_count(1);
+  builder.Return();
+  Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
+
+  InterpreterTester tester(handles.main_isolate(), bytecode_array);
+  InterpreterCallable callable(tester.GetCallable());
+  Handle<Object> return_val = callable().ToHandleChecked();
+  CHECK(return_val.is_identical_to(undefined_value));
+}