Version 5.7.440.1 (cherry-pick)

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 d9113753d03b2b20b1cdb86348bbd1eacdae7969..33534a786e4e4378d0bae7c60c06669816303f5a 100644
--- a/src/runtime/runtime-internal.cc
+++ b/src/runtime/runtime-internal.cc
@@ -298,7 +298,6 @@ RUNTIME_FUNCTION(Runtime_AllocateSeqOneByteString) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_SMI_ARG_CHECKED(length, 0);
-  if (length == 0) return isolate->heap()->empty_string();
   Handle<SeqOneByteString> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, isolate->factory()->NewRawOneByteString(length));
@@ -309,7 +308,6 @@ RUNTIME_FUNCTION(Runtime_AllocateSeqTwoByteString) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_SMI_ARG_CHECKED(length, 0);
-  if (length == 0) return isolate->heap()->empty_string();
   Handle<SeqTwoByteString> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, isolate->factory()->NewRawTwoByteString(length));