[generators] Replace some runtime functions with Turbofan JS operators.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index d98d2fe1a89830fac77c09df9f231ed8ba2ad4ff..29ccd9efdfd23257b976c281ffefc913aa01c175 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1686,6 +1686,18 @@ Type* Typer::Visitor::TypeJSStoreMessage(Node* node) {
   return nullptr;
 }
 
+Type* Typer::Visitor::TypeJSGeneratorStore(Node* node) {
+  UNREACHABLE();
+  return nullptr;
+}
+
+Type* Typer::Visitor::TypeJSGeneratorRestoreContinuation(Node* node) {
+  return typer_->cache_.kSmi;
+}
+
+Type* Typer::Visitor::TypeJSGeneratorRestoreRegister(Node* node) {
+  return Type::Any();
+}
 
 Type* Typer::Visitor::TypeJSStackCheck(Node* node) { return Type::Any(); }