[Interpreter] Add CallRuntime support to the interpreter.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

 // Copyright 2014 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/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "test/unittests/test-utils.h"
 
@@ skipping 33 matching lines @@
   builder.LoadGlobal(1);
 
   // Emit load / store property operations.
   builder.LoadNamedProperty(reg, 0, LanguageMode::SLOPPY)
       .LoadKeyedProperty(reg, 0, LanguageMode::SLOPPY)
       .StoreNamedProperty(reg, reg, 0, LanguageMode::SLOPPY)
       .StoreKeyedProperty(reg, reg, 0, LanguageMode::SLOPPY);
 
   // Call operations.
   builder.Call(reg, reg, 0);
+  builder.CallRuntime(Runtime::kIsArray, reg, 0);

[oth, 2015/09/29 09:33:36]

Curious why this works with arg_count == 0? Runtime_IsArray DCHECKs args_count
== 1.

[rmcilroy, 2015/10/01 17:02:45]

Because the code generated by this test is never actually run so IsArray never
gets called (a bunch of other bytecodes in this tests aren't really runnable
either, it is just a test that the builder does what we expect). Updated to 1
anyway.

 
   // Emit binary operator invocations.
   builder.BinaryOperation(Token::Value::ADD, reg)
       .BinaryOperation(Token::Value::SUB, reg)
       .BinaryOperation(Token::Value::MUL, reg)
       .BinaryOperation(Token::Value::DIV, reg)
       .BinaryOperation(Token::Value::MOD, reg);
 
   // Emit test operator invocations.
   builder.CompareOperation(Token::Value::EQ, reg, LanguageMode::SLOPPY)
@@ skipping 370 matching lines @@
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8