[turbofan] Optimized support for CreateGeneratorObject.

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 1e2c15882b2f52a471574e460bb2b91b1e60027b..1b894d7cc1e384b5d6ff960c22dafd54ff9620bb 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -904,6 +904,12 @@ const Operator* JSOperatorBuilder::DeleteProperty() {
       3, 1, 1, 1, 1, 2);                                     // counts
 }
 
+const Operator* JSOperatorBuilder::CreateGeneratorObject() {
+  return new (zone()) Operator(                                     // --
+      IrOpcode::kJSCreateGeneratorObject, Operator::kEliminatable,  // opcode
+      "JSCreateGeneratorObject",                                    // name
+      2, 1, 1, 1, 1, 0);                                            // counts
+}
 
 const Operator* JSOperatorBuilder::LoadGlobal(const Handle<Name>& name,
                                               const VectorSlotPair& feedback,