Handle retry-after-gc failures within LoadIC::Load and StoreIC::Store.

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4025 matching lines @@
   if (index < static_cast<uint32_t>(string->length())) {
     string->TryFlatten();
     return LookupSingleCharacterStringFromCode(
         string->GetIsolate(),
         string->Get(index));
   }
   return Execution::CharAt(string, index);
 }
 
 
+MaybeObject* Runtime::GetElementOrCharAtOrFail(Isolate* isolate,
+                                               Handle<Object> object,
+                                               uint32_t index) {
+  CALL_HEAP_FUNCTION_PASS_EXCEPTION(isolate,
+      GetElementOrCharAt(isolate, object, index));
+}
+
+
 MaybeObject* Runtime::GetElementOrCharAt(Isolate* isolate,
                                          Handle<Object> object,
                                          uint32_t index) {
   // Handle [] indexing on Strings
   if (object->IsString()) {
     Handle<Object> result = GetCharAt(Handle<String>::cast(object), index);
     if (!result->IsUndefined()) return *result;
   }
 
   // Handle [] indexing on String objects
@@ skipping 9168 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal