[heap] ObjectStats: Handle empty deoptimization input data

src/heap/object-stats.cc

 // Copyright 2015 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/heap/object-stats.h"
 
 #include "src/compilation-cache.h"
 #include "src/counters.h"
 #include "src/heap/heap-inl.h"
 #include "src/isolate.h"
@@ skipping 491 matching lines @@
                          BYTECODE_ARRAY_HANDLER_TABLE_SUB_TYPE, 0);
 }
 
 void ObjectStatsCollector::RecordCodeDetails(Code* code) {
   stats_->RecordCodeSubTypeStats(code->kind(), code->GetAge(), code->Size());
   RecordFixedArrayHelper(code, code->deoptimization_data(),
                          DEOPTIMIZATION_DATA_SUB_TYPE, 0);
   if (code->kind() == Code::Kind::OPTIMIZED_FUNCTION) {
     DeoptimizationInputData* input_data =
         DeoptimizationInputData::cast(code->deoptimization_data());
-    RecordFixedArrayHelper(code->deoptimization_data(),
-                           input_data->LiteralArray(),
-                           OPTIMIZED_CODE_LITERALS_SUB_TYPE, 0);
+    if (input_data->length() > 0) {
+      RecordFixedArrayHelper(code->deoptimization_data(),
+                             input_data->LiteralArray(),
+                             OPTIMIZED_CODE_LITERALS_SUB_TYPE, 0);
+    }
   }
   RecordFixedArrayHelper(code, code->handler_table(), HANDLER_TABLE_SUB_TYPE,
                          0);
   int const mode_mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT);
   for (RelocIterator it(code, mode_mask); !it.done(); it.next()) {
     RelocInfo::Mode mode = it.rinfo()->rmode();
     if (mode == RelocInfo::EMBEDDED_OBJECT) {
       Object* target = it.rinfo()->target_object();
       if (target->IsFixedArray()) {
         RecursivelyRecordFixedArrayHelper(code, FixedArray::cast(target),
@@ skipping 70 matching lines @@
                           SLOW_TEMPLATE_INSTANTIATIONS_CACHE_SUB_TYPE);
     FixedArray* fast_cache = native_ctx->fast_template_instantiations_cache();
     stats_->RecordFixedArraySubTypeStats(
         fast_cache, FAST_TEMPLATE_INSTANTIATIONS_CACHE_SUB_TYPE,
         fast_cache->Size(), 0);
   }
 }
 
 }  // namespace internal
 }  // namespace v8