[Interpreter] Add CallRuntime support to the interpreter.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index f36ba9efeb45b3ab8038b23f10600ceabe813876..dcd3c44e5473c18fc2343b8d1d6a2994c8bceb27 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -334,10 +334,10 @@ void Interpreter::DoMod(compiler::InterpreterAssembler* assembler) {
 }
 
 
-// Call <receiver> <arg_count>
+// Call <callable> <receiver> <arg_count>
 //
-// Call a JS function with receiver and |arg_count| arguments in subsequent
-// registers. The JSfunction or Callable to call is in the accumulator.
+// Call a JSfunction or Callable in |callable| with receiver and |arg_count|
+// arguments in subsequent registers.
 void Interpreter::DoCall(compiler::InterpreterAssembler* assembler) {
   Node* function_reg = __ BytecodeOperandReg8(0);
   Node* function = __ LoadRegister(function_reg);
@@ -350,6 +350,21 @@ void Interpreter::DoCall(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// CallRuntime <function_id> <first_arg> <arg_count>
+//
+// Call the runtime function |function_id| with first argument in register
+// |first_arg| and |arg_count| arguments in subsequent registers.
+void Interpreter::DoCallRuntime(compiler::InterpreterAssembler* assembler) {
+  Node* function_id = __ BytecodeOperandIdx16(0);
+  Node* first_arg_reg = __ BytecodeOperandReg8(1);
+  Node* first_arg = __ RegisterLocation(first_arg_reg);
+  Node* args_count = __ BytecodeOperandCount8(2);
+  Node* result = __ CallRuntime(function_id, first_arg, args_count);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
 // TestEqual <src>
 //
 // Test if the value in the <src> register equals the accumulator.