1 files changed, 0 insertions, 179 deletions
diff --git a/deps/v8/test/unittests/heap/object-start-bitmap-unittest.cc b/deps/v8/test/unittests/heap/object-start-bitmap-unittest.cc
deleted file mode 100644
index d08c9d04d0..0000000000
--- a/deps/v8/test/unittests/heap/object-start-bitmap-unittest.cc
+++ /dev/null
@@ -1,179 +0,0 @@
-// Copyright 2020 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-start-bitmap.h"
-
-#include "src/base/macros.h"
-#include "src/heap/object-start-bitmap-inl.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace v8 {
-namespace internal {
-
-namespace {
-
-bool IsEmpty(const ObjectStartBitmap& bitmap) {
-  size_t count = 0;
-  bitmap.Iterate([&count](Address) { count++; });
-  return count == 0;
-}
-
-// Abstraction for objects that hides ObjectStartBitmap::kGranularity and
-// the base address as getting either of it wrong will result in failed DCHECKs.
-class TestObject {
- public:
-  static PtrComprCageBase kCageBase;
-  static Address kBaseOffset;
-
-  explicit TestObject(size_t number) : number_(number) {
-    const size_t max_entries = ObjectStartBitmap::MaxEntries();
-    EXPECT_GE(max_entries, number_);
-  }
-
-  Address base_ptr() const {
-    return kBaseOffset + ObjectStartBitmap::Granularity() * number_;
-  }
-
-  // Allow implicitly converting Object to Address.
-  operator Address() const { return base_ptr(); }
-
- private:
-  const size_t number_;
-};
-
-PtrComprCageBase TestObject::kCageBase{0xca6e00000000ul};
-Address TestObject::kBaseOffset = reinterpret_cast<Address>(0x4000ul);
-
-}  // namespace
-
-TEST(V8ObjectStartBitmapTest, MoreThanZeroEntriesPossible) {
-  const size_t max_entries = ObjectStartBitmap::MaxEntries();
-  EXPECT_LT(0u, max_entries);
-}
-
-TEST(V8ObjectStartBitmapTest, InitialEmpty) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  EXPECT_TRUE(IsEmpty(bitmap));
-}
-
-TEST(V8ObjectStartBitmapTest, SetBitImpliesNonEmpty) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  bitmap.SetBit(TestObject(0));
-  EXPECT_FALSE(IsEmpty(bitmap));
-}
-
-TEST(V8ObjectStartBitmapTest, SetBitCheckBit) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object(7);
-  bitmap.SetBit(object);
-  EXPECT_TRUE(bitmap.CheckBit(object));
-}
-
-TEST(V8ObjectStartBitmapTest, SetBitClearbitCheckBit) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object(77);
-  bitmap.SetBit(object);
-  bitmap.ClearBit(object);
-  EXPECT_FALSE(bitmap.CheckBit(object));
-}
-
-TEST(V8ObjectStartBitmapTest, SetBitClearBitImpliesEmpty) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object(123);
-  bitmap.SetBit(object);
-  bitmap.ClearBit(object);
-  EXPECT_TRUE(IsEmpty(bitmap));
-}
-
-TEST(V8ObjectStartBitmapTest, AdjacentObjectsAtBegin) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object0(0);
-  TestObject object1(1);
-  bitmap.SetBit(object0);
-  bitmap.SetBit(object1);
-  EXPECT_FALSE(bitmap.CheckBit(TestObject(3)));
-  size_t count = 0;
-  bitmap.Iterate([&count, object0, object1](Address current) {
-    if (count == 0) {
-      EXPECT_EQ(object0.base_ptr(), current);
-    } else if (count == 1) {
-      EXPECT_EQ(object1.base_ptr(), current);
-    }
-    count++;
-  });
-  EXPECT_EQ(2u, count);
-}
-
-TEST(V8ObjectStartBitmapTest, AdjacentObjectsAtEnd) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  const size_t last_entry_index = ObjectStartBitmap::MaxEntries() - 1;
-  TestObject object0(last_entry_index - 1);
-  TestObject object1(last_entry_index);
-  bitmap.SetBit(object0);
-  bitmap.SetBit(object1);
-  EXPECT_FALSE(bitmap.CheckBit(TestObject(last_entry_index - 2)));
-  size_t count = 0;
-  bitmap.Iterate([&count, object0, object1](Address current) {
-    if (count == 0) {
-      EXPECT_EQ(object0.base_ptr(), current);
-    } else if (count == 1) {
-      EXPECT_EQ(object1.base_ptr(), current);
-    }
-    count++;
-  });
-  EXPECT_EQ(2u, count);
-}
-
-TEST(V8ObjectStartBitmapTest, FindBasePtrExact) {
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object(654);
-  bitmap.SetBit(object);
-  EXPECT_EQ(object.base_ptr(), bitmap.FindBasePtrImpl(object.base_ptr()));
-}
-
-TEST(V8ObjectStartBitmapTest, FindBasePtrApproximate) {
-  const size_t kInternalDelta = 37;
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object(654);
-  bitmap.SetBit(object);
-  EXPECT_EQ(object.base_ptr(),
-            bitmap.FindBasePtrImpl(object.base_ptr() + kInternalDelta));
-}
-
-TEST(V8ObjectStartBitmapTest, FindBasePtrIteratingWholeBitmap) {
-  const size_t kLastWordDelta = ObjectStartBitmap::MaxEntries() - 1;
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object_to_find(0);
-  bitmap.SetBit(object_to_find);
-  Address hint_index = TestObject(kLastWordDelta);
-  EXPECT_EQ(object_to_find.base_ptr(), bitmap.FindBasePtrImpl(hint_index));
-}
-
-TEST(V8ObjectStartBitmapTest, FindBasePtrNextCell) {
-  // This white box test makes use of the fact that cells are of type uint32_t.
-  const size_t kCellSize = sizeof(uint32_t);
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object_to_find(kCellSize - 1);
-  Address hint = TestObject(kCellSize);
-  bitmap.SetBit(TestObject(0));
-  bitmap.SetBit(object_to_find);
-  EXPECT_EQ(object_to_find.base_ptr(), bitmap.FindBasePtrImpl(hint));
-}
-
-TEST(V8ObjectStartBitmapTest, FindBasePtrSameCell) {
-  // This white box test makes use of the fact that cells are of type uint32_t.
-  const size_t kCellSize = sizeof(uint32_t);
-  ObjectStartBitmap bitmap(TestObject::kCageBase, TestObject::kBaseOffset);
-  TestObject object_to_find(kCellSize - 1);
-  Address hint = object_to_find;
-  bitmap.SetBit(TestObject(0));
-  bitmap.SetBit(object_to_find);
-  EXPECT_EQ(object_to_find.base_ptr(), bitmap.FindBasePtrImpl(hint));
-}
-
-// TODO(v8:12851): If the ObjectStartBitmap implementation stays, unit tests
-// should be added to test the functionality of method FindBasePtr.
-
-}  // namespace internal
-}  // namespace v8