[turbofan] Optimized support for CreateGeneratorObject.

src/compiler/js-intrinsic-lowering.h

Index: src/compiler/js-intrinsic-lowering.h
diff --git a/src/compiler/js-intrinsic-lowering.h b/src/compiler/js-intrinsic-lowering.h
index e83b5b149929facd69c93506c03065b8b7aa0317..0f3e84a5e562e6e59bd71d3af23a28c850ded37d 100644
--- a/src/compiler/js-intrinsic-lowering.h
+++ b/src/compiler/js-intrinsic-lowering.h
@@ -43,6 +43,7 @@ class V8_EXPORT_PRIVATE JSIntrinsicLowering final
   Reduction ReduceCreateIterResultObject(Node* node);
   Reduction ReduceDebugIsActive(Node* node);
   Reduction ReduceDeoptimizeNow(Node* node);
+  Reduction ReduceCreateJSGeneratorObject(Node* node);
   Reduction ReduceGeneratorClose(Node* node);
   Reduction ReduceGeneratorGetContext(Node* node);
   Reduction ReduceGeneratorGetInputOrDebugPos(Node* node);