Introduce bytecodes for assisting generator suspend and resume.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

Index: test/unittests/interpreter/bytecode-array-builder-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-builder-unittest.cc b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
index bcd7710cda266242596ef94072a566c0fc8b5273..5fd876c426515f111394396de59ae1ef8a5a9b47 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -289,6 +289,10 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
       .BinaryOperation(Token::Value::ADD, reg)
       .JumpIfFalse(&start);
 
+  // Emit generator operations
+  builder.SuspendGenerator(reg)
+      .ResumeGenerator(reg);
+
   // Intrinsics handled by the interpreter.
   builder.CallRuntime(Runtime::kInlineIsArray, reg, 1)
       .CallRuntime(Runtime::kInlineIsArray, wide, 1);