Introduce bytecodes for assisting generator suspend and resume.

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"
 #include "src/compiler.h"
 #include "src/interpreter/interpreter-intrinsics.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 923 matching lines @@
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInStep(Register index) {
   OperandScale operand_scale = OperandSizesToScale(index.SizeOfOperand());
   OutputScaled(Bytecode::kForInStep, operand_scale, RegisterOperand(index));
   return *this;
 }
 
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::SuspendGenerator(
+    Register generator) {
+  OperandScale operand_scale = OperandSizesToScale(generator.SizeOfOperand());
+  OutputScaled(Bytecode::kSuspendGenerator, operand_scale,
+               RegisterOperand(generator));
+  return *this;
+}
+
+
+BytecodeArrayBuilder& BytecodeArrayBuilder::ResumeGenerator(
+    Register generator) {
+  OperandScale operand_scale = OperandSizesToScale(generator.SizeOfOperand());
+  OutputScaled(Bytecode::kResumeGenerator, operand_scale,
+               RegisterOperand(generator));
+  return *this;
+}
+
+
 BytecodeArrayBuilder& BytecodeArrayBuilder::MarkHandler(int handler_id,
                                                         bool will_catch) {
   handler_table_builder()->SetHandlerTarget(handler_id, bytecodes()->size());
   handler_table_builder()->SetPrediction(handler_id, will_catch);
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::MarkTryBegin(int handler_id,
                                                          Register context) {
@@ skipping 517 matching lines @@
 }
 
 uint32_t BytecodeArrayBuilder::UnsignedOperand(size_t value) {
   DCHECK_LE(value, kMaxUInt32);
   return static_cast<uint32_t>(value);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8