[stubs] Port String.prototype.substr to TurboFan

src/runtime/runtime-internal.cc

Index: src/runtime/runtime-internal.cc
diff --git a/src/runtime/runtime-internal.cc b/src/runtime/runtime-internal.cc
index 26882b5c83b08896152142eaabc83485c339778e..b6bc9faf36e58e28be63fe37880700c9dd6cf07f 100644
--- a/src/runtime/runtime-internal.cc
+++ b/src/runtime/runtime-internal.cc
@@ -222,6 +222,12 @@ RUNTIME_FUNCTION(Runtime_ThrowIllegalInvocation) {
       isolate, NewTypeError(MessageTemplate::kIllegalInvocation));
 }
 
+RUNTIME_FUNCTION(Runtime_ThrowIllegalOperation) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 0);
+  return isolate->ThrowIllegalOperation();
+}
+
 RUNTIME_FUNCTION(Runtime_ThrowIncompatibleMethodReceiver) {
   HandleScope scope(isolate);
   DCHECK_EQ(2, args.length());