[heap] Don't assume that optimizing-compile-dispatcher exists

Bug: chromium:1215514, chromium:1211215
Change-Id: I6ebc1d4138d6bee66c3fd9a8369741b8df960807
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2933663
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74929}

src/heap/heap.cc

@@ -3165,7 +3165,10 @@ bool Heap::CanMoveObjectStart(HeapObject object) {
   if (IsLargeObject(object)) return false;
 
   // Compilation jobs may have references to the object.
-  if (isolate()->optimizing_compile_dispatcher()->HasJobs()) return false;
+  if (isolate()->concurrent_recompilation_enabled() &&
+      isolate()->optimizing_compile_dispatcher()->HasJobs()) {
+    return false;
+  }
 
   // We can move the object start if the page was already swept.
   return Page::FromHeapObject(object)->SweepingDone();

test/mjsunit/compiler/regress-1215514.js

+// Copyright 2021 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --no-concurrent-recompilation
+
+new Array(4242).shift();