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diff --git a/runtime/gc/verification-inl.h b/runtime/gc/verification-inl.h
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+++ b/runtime/gc/verification-inl.h
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+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_GC_VERIFICATION_INL_H_
+#define ART_RUNTIME_GC_VERIFICATION_INL_H_
+
+#include "verification.h"
+
+#include "mirror/class-inl.h"
+
+namespace art {
+namespace gc {
+
+template <ReadBarrierOption kReadBarrierOption>
+bool Verification::IsValidClassUnchecked(mirror::Class* klass) const {
+  mirror::Class* k1 = klass->GetClass<kVerifyNone, kReadBarrierOption>();
+  if (!IsValidHeapObjectAddress(k1)) {
+    return false;
+  }
+  // `k1` should be class class, take the class again to verify.
+  // Note that this check may not be valid for the no image space
+  // since the class class might move around from moving GC.
+  mirror::Class* k2 = k1->GetClass<kVerifyNone, kReadBarrierOption>();
+  if (!IsValidHeapObjectAddress(k2)) {
+    return false;
+  }
+  return k1 == k2;
+}
+
+template <ReadBarrierOption kReadBarrierOption>
+bool Verification::IsValidClass(mirror::Class* klass) const {
+  if (!IsValidHeapObjectAddress(klass)) {
+    return false;
+  }
+  return IsValidClassUnchecked<kReadBarrierOption>(klass);
+}
+
+template <ReadBarrierOption kReadBarrierOption>
+bool Verification::IsValidObject(mirror::Object* obj) const {
+  if (!IsValidHeapObjectAddress(obj)) {
+    return false;
+  }
+  mirror::Class* klass = obj->GetClass<kVerifyNone, kReadBarrierOption>();
+  return IsValidClass(klass);
+}
+
+}  // namespace gc
+}  // namespace art
+
+#endif  // ART_RUNTIME_GC_VERIFICATION_INL_H_