[Interpreter] TurboFan implementation of intrinsics.

src/interpreter/bytecode-array-builder.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/interpreter/bytecode-array-builder.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
@@ skipping 1117 matching lines @@
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntime(
     Runtime::FunctionId function_id, Register first_arg, size_t arg_count) {
   DCHECK_EQ(1, Runtime::FunctionForId(function_id)->result_size);
   DCHECK(FitsInIdx16Operand(function_id));
   if (!first_arg.is_valid()) {
     DCHECK_EQ(0u, arg_count);
     first_arg = Register(0);
   }
+  if (function_id == Runtime::kInlineIsJSReceiver ||
+      function_id == Runtime::kInlineIsArray) {
+    // Arg is in the accumulator

[oth, 2016/02/01 09:52:33]

Comment seems distracting. Neither the interpreter or compiler implementations
look at the accumulator.

[epertoso, 2016/03/03 11:20:39]

Removed.

+    Output(Bytecode::kIntrinsicOneArg, static_cast<uint16_t>(function_id),
+           first_arg.ToRawOperand());
+    return *this;
+  }
   if (FitsInReg8Operand(first_arg) && FitsInIdx8Operand(arg_count)) {
     Output(Bytecode::kCallRuntime, static_cast<uint16_t>(function_id),
            first_arg.ToRawOperand(), static_cast<uint8_t>(arg_count));
   } else if (FitsInReg16Operand(first_arg) && FitsInIdx16Operand(arg_count)) {
     Output(Bytecode::kCallRuntimeWide, static_cast<uint16_t>(function_id),
            first_arg.ToRawOperand(), static_cast<uint16_t>(arg_count));
   } else {
     UNIMPLEMENTED();
   }
   return *this;
@@ skipping 665 matching lines @@
 }
 
 // static
 bool BytecodeArrayBuilder::FitsInReg16OperandUntranslated(Register value) {
   return value.is_short_operand();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8