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

src/interpreter/bytecode-array-builder.h

 // 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.
 
 #ifndef V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include "src/ast/ast.h"
 #include "src/base/compiler-specific.h"
 #include "src/globals.h"
@@ skipping 225 matching lines @@
   // Call the runtime function with |function_id| with single argument |arg|
   // that returns a pair of values. The return values will be returned in
   // |return_pair|.
   BytecodeArrayBuilder& CallRuntimeForPair(Runtime::FunctionId function_id,
                                            Register arg,
                                            RegisterList return_pair);
 
   // Call the JS runtime function with |context_index| and arguments |args|.
   BytecodeArrayBuilder& CallJSRuntime(int context_index, RegisterList args);
 
-  // Call the constructor in |args[0]| with new_target in |args[1]| and the
-  // arguments starting at |args[2]| onwards. The final argument must be a
-  // spread.
-  BytecodeArrayBuilder& NewWithSpread(RegisterList args);
+  // Call the new operator for use with a spread. The accumulator holds the
+  // |new_target|. The |constructor| is in a register and arguments are in
+  // |args|. The final argument must be a spread.
+  BytecodeArrayBuilder& NewWithSpread(Register constructor, RegisterList args);

[rmcilroy, 2017/01/16 16:28:02]

I realize you didn't change this in this CL, but this should be up near the
New() function.

[petermarshall, 2017/01/18 10:05:32]

Done

 
   // Operators (register holds the lhs value, accumulator holds the rhs value).
   // Type feedback will be recorded in the |feedback_slot|
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg,
                                         int feedback_slot);
 
   // Count Operators (value stored in accumulator).
   // Type feedback will be recorded in the |feedback_slot|
   BytecodeArrayBuilder& CountOperation(Token::Value op, int feedback_slot);
 
@@ skipping 179 matching lines @@
   static int const kNoFeedbackSlot = 0;
 
   DISALLOW_COPY_AND_ASSIGN(BytecodeArrayBuilder);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_