[Interpreter] Add support for JS calls.

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"
@@ skipping 540 matching lines @@
 
   // Test transition to monomorphic IC.
   return_val = callable(object).ToHandleChecked();
   CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(123));
 
   // Test transition to megamorphic IC.
   Handle<Object> object3 = tester.NewObject("({ key : 789, val2 : 123 })");
   return_val = callable(object3).ToHandleChecked();
   CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(789));
 }
+
+
+TEST(InterpreterCallJS) {
+  HandleAndZoneScope handles;
+  i::Isolate* isolate = handles.main_isolate();
+  i::Factory* factory = isolate->factory();
+
+  i::Code::Kind ic_kinds[] = {i::Code::LOAD_IC};
+  i::FeedbackVectorSpec feedback_spec(0, 1, ic_kinds);
+  Handle<i::TypeFeedbackVector> vector =
+      factory->NewTypeFeedbackVector(&feedback_spec);
+
+  Handle<i::String> name = factory->NewStringFromAsciiChecked("func");
+  name = factory->string_table()->LookupString(isolate, name);
+
+  // Check with no args.
+  {
+    BytecodeArrayBuilder builder(handles.main_isolate(), handles.main_zone());
+    builder.set_locals_count(0);
+    builder.set_parameter_count(1);
+    builder.LoadLiteral(name)
+        .LoadNamedProperty(builder.Parameter(0), vector->first_ic_slot_index(),
+                           i::SLOPPY)
+        .CallJS(builder.Parameter(0), 1)
+        .Return();
+    Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
+
+    InterpreterTester tester(handles.main_isolate(), bytecode_array, vector);
+    auto callable = tester.GetCallable<Handle<Object>>();
+
+    Handle<Object> object = tester.NewObject(
+        "new (function Obj() { this.func = function() { return 0x265; }})()");
+    Handle<Object> return_val = callable(object).ToHandleChecked();
+    CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(0x265));
+  }
+
+  // Check that reciever is passed properly.
+  {
+    BytecodeArrayBuilder builder(handles.main_isolate(), handles.main_zone());
+    builder.set_locals_count(0);
+    builder.set_parameter_count(1);
+    builder.LoadLiteral(name)
+        .LoadNamedProperty(builder.Parameter(0), vector->first_ic_slot_index(),
+                           i::SLOPPY)
+        .CallJS(builder.Parameter(0), 1)
+        .Return();
+    Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
+
+    InterpreterTester tester(handles.main_isolate(), bytecode_array, vector);
+    auto callable = tester.GetCallable<Handle<Object>>();
+
+    Handle<Object> object = tester.NewObject(
+        "new (function Obj() {"
+        "  this.val = 1234;"
+        "  this.func = function() { return this.val; };"
+        "})()");
+    Handle<Object> return_val = callable(object).ToHandleChecked();
+    CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(1234));
+  }
+
+  // Check with two parameters (+ reciever).
+  {
+    BytecodeArrayBuilder builder(handles.main_isolate(), handles.main_zone());
+    builder.set_locals_count(3);
+    builder.set_parameter_count(1);
+    builder.LoadAccumulatorWithRegister(builder.Parameter(0))
+        .StoreAccumulatorInRegister(Register(0))
+        .LoadLiteral(Smi::FromInt(51))
+        .StoreAccumulatorInRegister(Register(1))
+        .LoadLiteral(Smi::FromInt(11))
+        .StoreAccumulatorInRegister(Register(2))
+        .LoadLiteral(name)
+        .LoadNamedProperty(builder.Parameter(0), vector->first_ic_slot_index(),
+                           i::SLOPPY)
+        .CallJS(Register(0), 3)
+        .Return();
+    Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
+
+    InterpreterTester tester(handles.main_isolate(), bytecode_array, vector);
+    auto callable = tester.GetCallable<Handle<Object>>();
+
+    Handle<Object> object = tester.NewObject(
+        "new (function Obj() { "
+        "  this.func = function(a, b) { return a - b; }"
+        "})()");
+    Handle<Object> return_val = callable(object).ToHandleChecked();
+    CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(40));
+  }
+
+  // Check with 10 parameters (+ reciever).
+  {
+    BytecodeArrayBuilder builder(handles.main_isolate(), handles.main_zone());
+    builder.set_locals_count(11);
+    builder.set_parameter_count(1);
+    builder.LoadAccumulatorWithRegister(builder.Parameter(0))
+        .StoreAccumulatorInRegister(Register(0))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("a"))
+        .StoreAccumulatorInRegister(Register(1))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("b"))
+        .StoreAccumulatorInRegister(Register(2))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("c"))
+        .StoreAccumulatorInRegister(Register(3))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("d"))
+        .StoreAccumulatorInRegister(Register(4))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("e"))
+        .StoreAccumulatorInRegister(Register(5))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("f"))
+        .StoreAccumulatorInRegister(Register(6))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("g"))
+        .StoreAccumulatorInRegister(Register(7))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("h"))
+        .StoreAccumulatorInRegister(Register(8))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("i"))
+        .StoreAccumulatorInRegister(Register(9))
+        .LoadLiteral(factory->NewStringFromAsciiChecked("j"))
+        .StoreAccumulatorInRegister(Register(10))
+        .LoadLiteral(name)
+        .LoadNamedProperty(builder.Parameter(0), vector->first_ic_slot_index(),
+                           i::SLOPPY)
+        .CallJS(Register(0), 11)
+        .Return();
+    Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
+
+    InterpreterTester tester(handles.main_isolate(), bytecode_array, vector);
+    auto callable = tester.GetCallable<Handle<Object>>();
+
+    Handle<Object> object = tester.NewObject(
+        "new (function Obj() { "
+        "  this.prefix = \"prefix_\";"
+        "  this.func = function(a, b, c, d, e, f, g, h, i, j) {"
+        "      return this.prefix + a + b + c + d + e + f + g + h + i + j;"
+        "  }"
+        "})()");
+    Handle<Object> return_val = callable(object).ToHandleChecked();
+    Handle<i::String> expected =
+        factory->NewStringFromAsciiChecked("prefix_abcdefghij");
+    CHECK(i::String::cast(*return_val)->Equals(*expected));
+  }
+}