[heap] Evacuation for young generation

test/cctest/heap/test-spaces.cc

 // Copyright 2011 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 453 matching lines @@
   // Freshly initialized VM gets by with the snapshot size (which is below
   // kMaxInitialSizePerSpace per space).
   Heap* heap = isolate->heap();
   int page_count[LAST_PAGED_SPACE + 1] = {0, 0, 0, 0};
   for (int i = FIRST_PAGED_SPACE; i <= LAST_PAGED_SPACE; i++) {
     // Debug code can be very large, so skip CODE_SPACE if we are generating it.
     if (i == CODE_SPACE && i::FLAG_debug_code) continue;
 
     page_count[i] = heap->paged_space(i)->CountTotalPages();
     // Check that the initial heap is also below the limit.
-    CHECK_LT(heap->paged_space(i)->CommittedMemory(), kMaxInitialSizePerSpace);
+    CHECK_LE(heap->paged_space(i)->CommittedMemory(), kMaxInitialSizePerSpace);
   }
 
   // Executing the empty script gets by with the same number of pages, i.e.,
   // requires no extra space.
   CompileRun("/*empty*/");
   for (int i = FIRST_PAGED_SPACE; i <= LAST_PAGED_SPACE; i++) {
     // Skip CODE_SPACE, since we had to generate code even for an empty script.
     if (i == CODE_SPACE) continue;
     CHECK_EQ(page_count[i], isolate->heap()->paged_space(i)->CountTotalPages());
   }
@@ skipping 267 matching lines @@
   HeapObject* filler =
       HeapObject::FromAddress(array->address() + array->Size());
   CHECK_EQ(filler->map(), CcTest::heap()->two_pointer_filler_map());
 
   const size_t shrinked = page->ShrinkToHighWaterMark();
   CHECK_EQ(0u, shrinked);
 }
 
 }  // namespace internal
 }  // namespace v8