[heap] Decrease large object limit for regular heap objects.

Review URL: https://codereview.chromium.org/1392823003

Cr-Commit-Position: refs/heads/master@{#31217}

src/heap/spaces-inl.h

@@ -133,7 +133,12 @@ HeapObject* HeapObjectIterator::FromCurrentPage() {
     }
 
     if (!obj->IsFiller()) {
+      if (obj->IsCode()) {
+        DCHECK_EQ(space_, space_->heap()->code_space());
+        DCHECK_CODEOBJECT_SIZE(obj_size, space_);
+      } else {
         DCHECK_OBJECT_SIZE(obj_size);
+      }
       return obj;
     }
   }

src/heap/spaces.h

@@ -86,6 +86,9 @@ class Isolate;
 #define DCHECK_OBJECT_SIZE(size) \
   DCHECK((0 < size) && (size <= Page::kMaxRegularHeapObjectSize))
 
+#define DCHECK_CODEOBJECT_SIZE(size, code_space) \
+  DCHECK((0 < size) && (size <= code_space->AreaSize()))
+
 #define DCHECK_PAGE_OFFSET(offset) \
   DCHECK((Page::kObjectStartOffset <= offset) && (offset <= Page::kPageSize))
 
@@ -840,7 +843,7 @@ class Page : public MemoryChunk {
   // memory. This also applies to new space allocation, since objects are never
   // migrated from new space to large object space. Takes double alignment into
   // account.
-  static const int kMaxRegularHeapObjectSize = kPageSize - kObjectStartOffset;
+  static const int kMaxRegularHeapObjectSize = 128 * KB * (i::kPointerSize / 4);
 
   static const int kAllocatableMemory = kPageSize - kObjectStartOffset;
 

src/objects.h

@@ -10048,9 +10048,14 @@ class JSArray: public JSObject {
   static const int kLengthOffset = JSObject::kHeaderSize;
   static const int kSize = kLengthOffset + kPointerSize;
 
-  // Note that Page::kMaxRegularHeapObjectSize puts a limit on
-  // permissible values (see the DCHECK in heap.cc).
-  static const int kInitialMaxFastElementArray = 100000;
+  // 128 * KB is the Page::kMaxRegularHeapObjectSize defined in spaces.h which
+  // we do not want to include in objects.h
+  // Note that Page::kMaxRegularHeapObjectSize has to be in sync with
+  // kInitialMaxFastElementArray which is checked in a DCHECK in heap.cc.
+  static const int kInitialMaxFastElementArray =
+      (128 * KB * (i::kPointerSize / 4) - FixedArray::kHeaderSize - kSize -
+       AllocationMemento::kSize) /
+      kPointerSize;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray);

test/cctest/test-serialize.cc

@@ -1223,15 +1223,15 @@ TEST(SerializeToplevelThreeBigStrings) {
       CompileRun("a")
           ->ToString(CcTest::isolate()->GetCurrentContext())
           .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
   result_str = CompileRun("b")
                    ->ToString(CcTest::isolate()->GetCurrentContext())
                    .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
   result_str = CompileRun("c")
                    ->ToString(CcTest::isolate()->GetCurrentContext())
                    .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
 
   delete cache;
   source_a.Dispose();

test/cctest/test-spaces.cc

@@ -430,7 +430,8 @@ TEST(CompactionSpace) {
   // and would thus neither grow, nor be able to allocate an object.
   const int kNumObjects = 100;
   const int kExpectedPages = (kNumObjects / (compaction_space->AreaSize() /
-                                             Page::kMaxRegularHeapObjectSize));
+                                             Page::kMaxRegularHeapObjectSize)) +
+                             1;
   for (int i = 0; i < kNumObjects; i++) {
     compaction_space->AllocateRawUnaligned(Page::kMaxRegularHeapObjectSize)
         .ToObjectChecked();