[not for landing] Debugging gpu failures

src/runtime/runtime-internal.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include <memory>
 
 #include "src/arguments.h"
 #include "src/ast/prettyprinter.h"
@@ skipping 312 matching lines @@
 RUNTIME_FUNCTION(Runtime_AllocateInTargetSpace) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_SMI_ARG_CHECKED(size, 0);
   CONVERT_SMI_ARG_CHECKED(flags, 1);
   CHECK(IsAligned(size, kPointerSize));
   CHECK(size > 0);
   CHECK(size <= kMaxRegularHeapObjectSize);
   bool double_align = AllocateDoubleAlignFlag::decode(flags);
   AllocationSpace space = AllocateTargetSpace::decode(flags);
-  return *isolate->factory()->NewFillerObject(size, double_align, space);
+  HeapObject* result =
+      *isolate->factory()->NewFillerObject(size, double_align, space);
+  if (space == OLD_SPACE) {
+    DCHECK(*(isolate->heap()->OldSpaceAllocationLimitAddress()) != nullptr);
+    DCHECK(*(isolate->heap()->OldSpaceAllocationTopAddress()) != nullptr);
+  }
+  return result;
 }
 
 RUNTIME_FUNCTION(Runtime_AllocateSeqOneByteString) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_SMI_ARG_CHECKED(length, 0);
   Handle<SeqOneByteString> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, isolate->factory()->NewRawOneByteString(length));
   return *result;
@@ skipping 189 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_Typeof) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
   return *Object::TypeOf(isolate, object);
 }
 
 }  // namespace internal
 }  // namespace v8