[Turbofan] Implement super calls with spread bytecode in assembly code.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index eee21247166f6e3a8ab33a5f3ad4519c257da227..7ffc405a5ebe1df8356954836679be3ee071a354 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -2165,15 +2165,16 @@ void Interpreter::DoCallJSRuntime(InterpreterAssembler* assembler) {
 // spread.
 //
 void Interpreter::DoNewWithSpread(InterpreterAssembler* assembler) {
-  Node* first_arg_reg = __ BytecodeOperandReg(0);
+  // Callable ic = CodeFactory::ConstructWithSpread(isolate_);

[rmcilroy, 2017/01/11 15:24:45]

leftover code?

[petermarshall, 2017/01/11 16:50:03]

Yeah not needed, there is a similar line left in Interpreter::DoNew but not as a
commment, which I'll submit another CL to remove, given that it doesn't do
anything.

Updated the comment here too.

+  Node* new_target = __ GetAccumulator();
+  Node* constructor_reg = __ BytecodeOperandReg(0);
+  Node* constructor = __ LoadRegister(constructor_reg);
+  Node* first_arg_reg = __ BytecodeOperandReg(1);
   Node* first_arg = __ RegisterLocation(first_arg_reg);
-  Node* args_count = __ BytecodeOperandCount(1);
+  Node* args_count = __ BytecodeOperandCount(2);
   Node* context = __ GetContext();
-
-  // Call into Runtime function NewWithSpread which does everything.
-  Node* runtime_function = __ Int32Constant(Runtime::kNewWithSpread);
-  Node* result =
-      __ CallRuntimeN(runtime_function, context, first_arg, args_count);
+  Node* result = __ CallConstructWithSpread(constructor, context, new_target,
+                                            first_arg, args_count);
   __ SetAccumulator(result);
   __ Dispatch();
 }