Full list of intrinsic functions in HotSpot in JDK 7, 8, 9 and 10

gnkoshelev March 27, 2018 at 12:39

Full list of intrinsic functions in HotSpot in JDK 7, 8, 9 and 10

An intrinsic or intrinsic function is a function that the JIT compiler can embed instead of calling Java and JNI code for optimization purposes. An important conclusion from this is that intrinsic functions are not available in interpreter mode. By default, HotSpot uses two JIT compilers C1 and C2, so an implementation of the intrinsic function for each of the JIT compilers may be available . Differences in the implementation of intrinsic functions for different JIT compilers are due to different internal representation of the code ( intermediate representation - IR ).

HotSpot implements several hundred intrinsics(their number is growing from release to release). A description of all intrinsic functions can be found in the OpenJDK sources in the file vmSymbols.hpp. Below are the complete lists of intrinsics for JDK 7 ( vmSymbols.hpp ), JDK 8 ( vmSymbols.hpp ), JDK 9 ( vmSymbols.hpp ) and JDK 10 ( vmSymbols.hpp ).

The description is as follows:

<название интринсика> .<заменяемый метод класса>

Intrinsic Functions in JDK 7

Intrinsic Functions in JDK 7

java.lang.Object

_hashCode                 java.lang.Object.hashCode()
_getClass                 java.lang.Object.getClass()
_clone                    java.lang.Object.clone()
_Object_init              java.lang.Object()

java.lang.Math

_dabs                     java.lang.Math.abs(double)
_dsin                     java.lang.Math.sin(double)
_dcos                     java.lang.Math.cos(double)
_dtan                     java.lang.Math.tan(double)
_datan2                   java.lang.Math.atan2(double, double)
_dsqrt                    java.lang.Math.sqrt(double)
_dlog                     java.lang.Math.log(double)
_dlog10                   java.lang.Math.log10(double)
_dpow                     java.lang.Math.pow(double, double)
_dexp                     java.lang.Math.exp(double)
_min                      java.lang.Math.min(int, int)
_max                      java.lang.Math.max(int, int)

Double Float

_floatToRawIntBits        java.lang.Float.floatToRawIntBits(float)
_floatToIntBits           java.lang.Float.floatToIntBits(float)
_intBitsToFloat           java.lang.Float.intBitsToFloat(int)
_doubleToRawLongBits      java.lang.Double.doubleToRawLongBits(double)
_doubleToLongBits         java.lang.Double.doubleToLongBits(double)
_longBitsToDouble         java.lang.Double.longBitsToDouble(long)

Integer, Long, Character, Short

_numberOfLeadingZeros_i   java.lang.Integer.numberOfLeadingZeros(int)
_numberOfLeadingZeros_l   java.lang.Long.numberOfLeadingZeros(long)
_numberOfTrailingZeros_i  java.lang.Integer.numberOfTrailingZeros(int)
_numberOfTrailingZeros_l  java.lang.Long.numberOfTrailingZeros(long)
_bitCount_i               java.lang.Integer.bitCount(int)
_bitCount_l               java.lang.Long.bitCount(long)
_reverseBytes_i           java.lang.Integer.reverseBytes(int)
_reverseBytes_l           java.lang.Long.reverseBytes(long)
_reverseBytes_c           java.lang.Character.reverseBytes(char)
_reverseBytes_s           java.lang.Short.reverseBytes(short)
_Integer_toString         java.lang.Integer.toString(int)

java.lang.System

_identityHashCode         java.lang.System.identityHashCode(Object)
_currentTimeMillis        java.lang.System.currentTimeMillis()
_nanoTime                 java.lang.System.nanoTime()
_arraycopy                java.lang.System.arraycopy(Object, int, Object, int, int)

java.lang.Thread

_isInterrupted            java.lang.Thread.isInterrupted(boolean)
_currentThread            java.lang.Thread.currentThread()

java.lang.Class

_isAssignableFrom         java.lang.Class.isAssignableFrom(Class)
_isInstance               java.lang.Class.isInstance(Object)
_getModifiers             java.lang.Class.getModifiers()
_isInterface              java.lang.Class.isInterface()
_isArray                  java.lang.Class.isArray()
_isPrimitive              java.lang.Class.isPrimitive()
_getSuperclass            java.lang.Class.getSuperclass()
_getComponentType         java.lang.Class.getComponentType()

Reflection

_getClassAccessFlags      sun.reflect.Reflection.getClassAccessFlags(Class)
_getCallerClass           sun.reflect.Reflection.getCallerClass(int)
_getLength                java.lang.reflect.Array.getLength(Object)
_newArray                 java.lang.reflect.Array.newArray(Class, int)
_invoke                   java.lang.reflect.Method.invoke(Object, Object...)

java.util.Arrays

_copyOf                   java.util.Arrays.copyOf(Object[], int, Class)
_copyOfRange              java.util.Arrays.copyOfRange(Object[], int, int, Class)
_equalsC                  java.util.Arrays.equals(char[], char[])

java.lang.String

_compareTo                java.lang.String.compareTo(String)
_indexOf                  java.lang.String.indexOf(String)
_equals                   java.lang.String.equals(Object)
_String_String            java.lang.String(String)

java.nio.Buffer

_checkIndex               java.nio.Buffer.checkIndex(int)

java.lang.ref.Reference

_Reference_get            java.lang.ref.Reference.get()

Cryptography

_aescrypt_encryptBlock com.sun.crypto.provider.AESCrypt.encryptBlock(byte[], in, byte[], int)
_aescrypt_decryptBlock com.sun.crypto.provider.AESCrypt.decryptBlock(byte[], in, byte[], int)
_cipherBlockChaining_encryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.encrypt(byte[], int, int, byte[], int)
_cipherBlockChaining_decryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.decrypt(byte[], int, int, byte[], int)

sun.misc.Unsafe

_allocateInstance         sun.misc.Unsafe.allocateInstance(Class)
_copyMemory               sun.misc.Unsafe.copyMemory(Object, long, Object, long, long)
_park                     sun.misc.Unsafe.park(boolean, long)
_unpark                   sun.misc.Unsafe.unpark(Object)
_getObject                sun.misc.Unsafe.getObject(Object, long)
_getBoolean               sun.misc.Unsafe.getBoolean(Object, long)
_getByte                  sun.misc.Unsafe.getByte(Object, long)
_getShort                 sun.misc.Unsafe.getShort(Object, long)
_getChar                  sun.misc.Unsafe.getChar(Object, long)
_getInt                   sun.misc.Unsafe.getInt(Object, long)
_getLong                  sun.misc.Unsafe.getLong(Object, long)
_getFloat                 sun.misc.Unsafe.getFloat(Object, long)
_getDouble                sun.misc.Unsafe.getDouble(Object, long)
_putObject                sun.misc.Unsafe.putObject(Object, long, Object)
_putBoolean               sun.misc.Unsafe.putBoolean(Object, long, boolean)
_putByte                  sun.misc.Unsafe.putByte(Object, long, byte)
_putShort                 sun.misc.Unsafe.putShort(Object, long, short)
_putChar                  sun.misc.Unsafe.putChar(Object, long, char)
_putInt                   sun.misc.Unsafe.putInt(Object, long, int)
_putLong                  sun.misc.Unsafe.putLong(Object, long, long)
_putFloat                 sun.misc.Unsafe.putFloat(Object, long, float)
_putDouble                sun.misc.Unsafe.putDouble(Object, long, double)
_getObjectVolatile        sun.misc.Unsafe.getObjectVolatile(Object, long)
_getBooleanVolatile       sun.misc.Unsafe.getBooleanVolatile(Object, long)
_getByteVolatile          sun.misc.Unsafe.getByteVolatile(Object, long)
_getShortVolatile         sun.misc.Unsafe.getShortVolatile(Object, long)
_getCharVolatile          sun.misc.Unsafe.getCharVolatile(Object, long)
_getIntVolatile           sun.misc.Unsafe.getIntVolatile(Object, long)
_getLongVolatile          sun.misc.Unsafe.getLongVolatile(Object, long)
_getFloatVolatile         sun.misc.Unsafe.getFloatVolatile(Object, long)
_getDoubleVolatile        sun.misc.Unsafe.getDoubleVolatile(Object, long)
_putObjectVolatile        sun.misc.Unsafe.putObjectVolatile(Object, long, Object)
_putBooleanVolatile       sun.misc.Unsafe.putBooleanVolatile(Object, long, boolean)
_putByteVolatile          sun.misc.Unsafe.putByteVolatile(Object, long, byte)
_putShortVolatile         sun.misc.Unsafe.putShortVolatile(Object, long, short)
_putCharVolatile          sun.misc.Unsafe.putCharVolatile(Object, long, char)
_putIntVolatile           sun.misc.Unsafe.putIntVolatile(Object, long, int)
_putLongVolatile          sun.misc.Unsafe.putLongVolatile(Object, long, long)
_putFloatVolatile         sun.misc.Unsafe.putFloatVolatile(Object, long, float)
_putDoubleVolatile        sun.misc.Unsafe.putDoubleVolatile(Object, long, double)
_getByte_raw              sun.misc.Unsafe.getByte(long)
_getShort_raw             sun.misc.Unsafe.getShort(long)
_getChar_raw              sun.misc.Unsafe.getChar(long)
_getInt_raw               sun.misc.Unsafe.getInt(long)
_getLong_raw              sun.misc.Unsafe.getLong(long)
_getFloat_raw             sun.misc.Unsafe.getFloat(long)
_getDouble_raw            sun.misc.Unsafe.getDouble(long)
_getAddress_raw           sun.misc.Unsafe.getAddress(long)
_putByte_raw              sun.misc.Unsafe.putByte(long, byte)
_putShort_raw             sun.misc.Unsafe.putShort(long, short)
_putChar_raw              sun.misc.Unsafe.putChar(long, char)
_putInt_raw               sun.misc.Unsafe.putInt(long, int)
_putLong_raw              sun.misc.Unsafe.putLong(long, long)
_putFloat_raw             sun.misc.Unsafe.putFloat(long, float)
_putDouble_raw            sun.misc.Unsafe.putDouble(long, double)
_putAddress_raw           sun.misc.Unsafe.putAddress(long, long)
_compareAndSwapObject     sun.misc.Unsafe.compareAndSwapObject(Object, long, Object, Object)
_compareAndSwapLong       sun.misc.Unsafe.compareAndSwapLong(Object, long, long, long)
_compareAndSwapInt        sun.misc.Unsafe.compareAndSwapInt(Object, long, int, int)
_putOrderedObject         sun.misc.Unsafe.putOrderedObject(Object, long, Object)
_putOrderedLong           sun.misc.Unsafe.putOrderedLong(Object, long, long)
_putOrderedInt            sun.misc.Unsafe.putOrderedInt(Object, long, int)
_getAndAddInt             sun.misc.Unsafe.getAndAddInt(Object, long, int)
_getAndAddLong            sun.misc.Unsafe.getAndAddLong(Object, long, long)
_getAndSetInt             sun.misc.Unsafe.getAndSet(Object, long, int)
_getAndSetLong            sun.misc.Unsafe.getAndSet(Object, long, long)
_getAndSetObject          sun.misc.Unsafe.getAndSet(Object, long, Object)
_prefetchRead             sun.misc.Unsafe.prefetchRead(Object, long)
_prefetchWrite            sun.misc.Unsafe.prefetchWrite(Object, long)
_prefetchReadStatic       sun.misc.Unsafe.prefetchReadStatic(Object, long)
_prefetchWriteStatic      sun.misc.Unsafe.prefetchWriteStatic(Object, long)

lava.lang.Throwable

_fillInStackTrace         java.lang.Throwable.fillInStackTrace()

java.lang.StringBuilder

_StringBuilder_void          java.lang.StringBuilder()
_StringBuilder_int           java.lang.StringBuilder(int)
_StringBuilder_String        java.lang.StringBuilder(String)
_StringBuilder_append_char   java.lang.StringBuilder.append(char)
_StringBuilder_append_int    java.lang.StringBuilder.append(int)
_StringBuilder_append_String java.lang.StringBuilder.append(String)
_StringBuilder_toString        java.lang.StringBuilder.toString()

java.lang.StringBuffer

_StringBuffer_void          java.lang.StringBuffer()
_StringBuffer_int           java.lang.StringBuffer(int)
_StringBuffer_String        java.lang.StringBuffer(String)
_StringBuffer_append_char   java.lang.StringBuffer.append(char)
_StringBuffer_append_int    java.lang.StringBuffer.append(int)
_StringBuffer_append_String java.lang.StringBuffer.append(String)
_StringBuffer_toString         java.lang.StringBuffer.toString()

java.lang.invoke.MethodHandle

_invokeGeneric            java.lang.invoke.MethodHandle.invoke*
_invokeBasic              java.lang.invoke.MethodHandle.invokeBasic*
_linkToVirtual            java.lang.invoke.MethodHandle.linkToVirtual*
_linkToStatic             java.lang.invoke.MethodHandle.linkToStatic*
_linkToSpecial            java.lang.invoke.MethodHandle.linkToSpecial*
_linkToInterface          java.lang.invoke.MethodHandle.linkToInterface*
_compiledLambdaForm       java.lang.invoke.MethodHandle.*

Boxing and Unboxing

_booleanValue             java.lang.Boolean.booleanValue()
_byteValue                java.lang.Byte.byteValue()
_charValue                java.lang.Character.charValue()
_shortValue               java.lang.Short.shortValue()
_intValue                 java.lang.Integer.intValue()
_longValue                java.lang.Long.longValue()
_floatValue               java.lang.Float.floatValue()
_doubleValue              java.lang.Double.doubleValue()
_Boolean_valueOf          java.lang.Boolean.valueOf(boolean)
_Byte_valueOf             java.lang.Byte.valueOf(byte)
_Character_valueOf        java.lang.Character.valueOf(char)
_Short_valueOf            java.lang.Short.valueOf(short)
_Integer_valueOf          java.lang.Integer.valueOf(int)
_Long_valueOf             java.lang.Long.valueOf(long)
_Float_valueOf            java.lang.Float.valueOf(float)
_Double_valueOf           java.lang.Double.valueOf(double)

Intrinsic Functions in JDK 8

Intrinsic Functions in JDK 8

java.lang.Object

_hashCode                 java.lang.Object.hashCode()
_getClass                 java.lang.Object.getClass()
_clone                    java.lang.Object.clone()
_Object_init              java.lang.Object()

java.lang.Math

_dabs                     java.lang.Math.abs(double)
_dsin                     java.lang.Math.sin(double)
_dcos                     java.lang.Math.cos(double)
_dtan                     java.lang.Math.tan(double)
_datan2                   java.lang.Math.atan2(double, double)
_dsqrt                    java.lang.Math.sqrt(double)
_dlog                     java.lang.Math.log(double)
_dlog10                   java.lang.Math.log10(double)
_dpow                     java.lang.Math.pow(double, double)
_dexp                     java.lang.Math.exp(double)
_min                      java.lang.Math.min(int, int)
_max                      java.lang.Math.max(int, int)
_addExactI                java.lang.Math.addExact(int, int)
_addExactL                java.lang.Math.addExact(long, long)
_decrementExactI          java.lang.Math.decrementExact(int)
_decrementExactL          java.lang.Math.decrementExact(long)
_incrementExactI          java.lang.Math.incrementExact(int)
_incrementExactL          java.lang.Math.incrementExact(long)
_multiplyExactI           java.lang.Math.multiplyExact(int, int)
_multiplyExactL           java.lang.Math.multiplyExact(long, long)
_negateExactI             java.lang.Math.negateExact(int)
_negateExactL             java.lang.Math.negateExact(long)
_subtractExactI           java.lang.Math.subtractExact(int, int)
_subtractExactL           java.lang.Math.subtractExact(long, long)

В JDK 8 в класс java.lang.Math были добавлены новые методы и для них соответствующие intrinsic-функции.

Double, Float

_floatToRawIntBits        java.lang.Float.floatToRawIntBits(float)
_floatToIntBits           java.lang.Float.floatToIntBits(float)
_intBitsToFloat           java.lang.Float.intBitsToFloat(int)
_doubleToRawLongBits      java.lang.Double.doubleToRawLongBits(double)
_doubleToLongBits         java.lang.Double.doubleToLongBits(double)
_longBitsToDouble         java.lang.Double.longBitsToDouble(long)

Integer, Long, Character, Short

_numberOfLeadingZeros_i   java.lang.Integer.numberOfLeadingZeros(int)
_numberOfLeadingZeros_l   java.lang.Long.numberOfLeadingZeros(long)
_numberOfTrailingZeros_i  java.lang.Integer.numberOfTrailingZeros(int)
_numberOfTrailingZeros_l  java.lang.Long.numberOfTrailingZeros(long)
_bitCount_i               java.lang.Integer.bitCount(int)
_bitCount_l               java.lang.Long.bitCount(long)
_reverseBytes_i           java.lang.Integer.reverseBytes(int)
_reverseBytes_l           java.lang.Long.reverseBytes(long)
_reverseBytes_c           java.lang.Character.reverseBytes(char)
_reverseBytes_s           java.lang.Short.reverseBytes(short)
_Integer_toString         java.lang.Integer.toString(int)

java.lang.System

_identityHashCode         java.lang.System.identityHashCode(Object)
_currentTimeMillis        java.lang.System.currentTimeMillis()
_nanoTime                 java.lang.System.nanoTime()
_arraycopy                java.lang.System.arraycopy(Object, int, Object, int, int)

java.lang.Thread

_isInterrupted            java.lang.Thread.isInterrupted(boolean)
_currentThread            java.lang.Thread.currentThread()

java.lang.Class

_isAssignableFrom         java.lang.Class.isAssignableFrom(Class)
_isInstance               java.lang.Class.isInstance(Object)
_getModifiers             java.lang.Class.getModifiers()
_isInterface              java.lang.Class.isInterface()
_isArray                  java.lang.Class.isArray()
_isPrimitive              java.lang.Class.isPrimitive()
_getSuperclass            java.lang.Class.getSuperclass()
_getComponentType         java.lang.Class.getComponentType()

Reflection

_getClassAccessFlags      sun.reflect.Reflection.getClassAccessFlags(Class)
_getCallerClass           sun.reflect.Reflection.getCallerClass()
_getLength                java.lang.reflect.Array.getLength(Object)
_newArray                 java.lang.reflect.Array.newArray(Class, int)
_invoke                   java.lang.reflect.Method.invoke(Object, Object...)

В JDK 8 метод sun.reflect.reflection.getCallerClass(int) помечен как @Deprecated, вмеcто него используется метод sun.reflect.Reflection.getCallerClass().

java.util.Arrays

_copyOf                   java.util.Arrays.copyOf(Object[], int, Class)
_copyOfRange              java.util.Arrays.copyOfRange(Object[], int, int, Class)
_equalsC                  java.util.Arrays.equals(char[], char[])

java.lang.String

_compareTo                java.lang.String.compareTo(String)
_indexOf                  java.lang.String.indexOf(String)
_equals                   java.lang.String.equals(Object)
_String_String            java.lang.String(String)

java.nio.Buffer

_checkIndex               java.nio.Buffer.checkIndex(int)

sun.nio.cs.ISO_8859_1$Encoder

_encodeISOArray     sun.nio.cs.ISO_8859_1.Encoder.encodeISOArray(char[], int, byte[], int, int)

В класс sun.nio.cs.ISO_8859_1$Encoder был добавлен новый метод encodeISOArray.

java.math.BigInteger

_multiplyToLen       java.math.BigInteger.multiplyToLen(int[], int, int[], int, int[])
_squareToLen         java.math.BigInteger.squareToLen(int[], int, int[], int)
_mulAdd              java.math.BigInteger.mulAdd(int[], int[], int, int, int)
_montgomeryMultiply  java.math.BigInteger.montgomeryMultiply(int[], int[], int[], int, long, int[])
_montgomerySquare    java.math.BigInteger.montgomerySquare(int[], int[], int, long, int[])

Для нескольких методов java.math.BigInteger в JDK 8 появились свои интринсики.

java.lang.ref.Reference

_Reference_get            java.lang.ref.Reference.get()

Cryptography

_aescrypt_encryptBlock com.sun.crypto.provider.AESCrypt.encryptBlock(byte[], in, byte[], int)
_aescrypt_decryptBlock com.sun.crypto.provider.AESCrypt.decryptBlock(byte[], in, byte[], int)
_cipherBlockChaining_encryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.encrypt(byte[], int, int, byte[], int)
_cipherBlockChaining_decryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.decrypt(byte[], int, int, byte[], int)

sun.security.provider.*

_sha_implCompress sun.security.provider.SHA.implCompress(byte[], int)
_sha2_implCompress sun.security.provider.SHA2.implCompress(byte[], int)
_sha5_implCompress sun.security.provider.SHA5.implCompress(byte[], int)
_digestBase_implCompressMB sun.security.provider.Digestbase.implCompressMultiBlock(byte[], int, int)

Только в JDK 8 появились интринсики для implCompress(). Добавлен новый метод sun.security.provider.DigestBase.implCompressMultiBlock().

java.util.zip.CRC32

_updateCRC32               java.util.zip.CRC32.update(int, int)
_updateBytesCRC32          java.util.zip.CRC32.updateBytes(int, byte[], int, int)
_updateByteBufferCRC32     java.util.zip.CRC32.updateByteBuffer(int, long, int, int)

Два интринсика для ранее существовавших метода update и updateBytes. Метод updateByteBuffer появился только в JDK 8.

sun.misc.Unsafe

_allocateInstance         sun.misc.Unsafe.allocateInstance(Class)
_copyMemory               sun.misc.Unsafe.copyMemory(Object, long, Object, long, long)
_park                     sun.misc.Unsafe.park(boolean, long)
_unpark                   sun.misc.Unsafe.unpark(Object)
_loadFence                sun.misc.Unsafe.loadFence()
_storeFence               sun.misc.Unsafe.storeFence()
_fullFence                sun.misc.Unsafe.fullFence()
_getObject                sun.misc.Unsafe.getObject(Object, long)
_getBoolean               sun.misc.Unsafe.getBoolean(Object, long)
_getByte                  sun.misc.Unsafe.getByte(Object, long)
_getShort                 sun.misc.Unsafe.getShort(Object, long)
_getChar                  sun.misc.Unsafe.getChar(Object, long)
_getInt                   sun.misc.Unsafe.getInt(Object, long)
_getLong                  sun.misc.Unsafe.getLong(Object, long)
_getFloat                 sun.misc.Unsafe.getFloat(Object, long)
_getDouble                sun.misc.Unsafe.getDouble(Object, long)
_putObject                sun.misc.Unsafe.putObject(Object, long, Object)
_putBoolean               sun.misc.Unsafe.putBoolean(Object, long, boolean)
_putByte                  sun.misc.Unsafe.putByte(Object, long, byte)
_putShort                 sun.misc.Unsafe.putShort(Object, long, short)
_putChar                  sun.misc.Unsafe.putChar(Object, long, char)
_putInt                   sun.misc.Unsafe.putInt(Object, long, int)
_putLong                  sun.misc.Unsafe.putLong(Object, long, long)
_putFloat                 sun.misc.Unsafe.putFloat(Object, long, float)
_putDouble                sun.misc.Unsafe.putDouble(Object, long, double)
_getObjectVolatile        sun.misc.Unsafe.getObjectVolatile(Object, long)
_getBooleanVolatile       sun.misc.Unsafe.getBooleanVolatile(Object, long)
_getByteVolatile          sun.misc.Unsafe.getByteVolatile(Object, long)
_getShortVolatile         sun.misc.Unsafe.getShortVolatile(Object, long)
_getCharVolatile          sun.misc.Unsafe.getCharVolatile(Object, long)
_getIntVolatile           sun.misc.Unsafe.getIntVolatile(Object, long)
_getLongVolatile          sun.misc.Unsafe.getLongVolatile(Object, long)
_getFloatVolatile         sun.misc.Unsafe.getFloatVolatile(Object, long)
_getDoubleVolatile        sun.misc.Unsafe.getDoubleVolatile(Object, long)
_putObjectVolatile        sun.misc.Unsafe.putObjectVolatile(Object, long, Object)
_putBooleanVolatile       sun.misc.Unsafe.putBooleanVolatile(Object, long, boolean)
_putByteVolatile          sun.misc.Unsafe.putByteVolatile(Object, long, byte)
_putShortVolatile         sun.misc.Unsafe.putShortVolatile(Object, long, short)
_putCharVolatile          sun.misc.Unsafe.putCharVolatile(Object, long, char)
_putIntVolatile           sun.misc.Unsafe.putIntVolatile(Object, long, int)
_putLongVolatile          sun.misc.Unsafe.putLongVolatile(Object, long, long)
_putFloatVolatile         sun.misc.Unsafe.putFloatVolatile(Object, long, float)
_putDoubleVolatile        sun.misc.Unsafe.putDoubleVolatile(Object, long, double)
_getByte_raw              sun.misc.Unsafe.getByte(long)
_getShort_raw             sun.misc.Unsafe.getShort(long)
_getChar_raw              sun.misc.Unsafe.getChar(long)
_getInt_raw               sun.misc.Unsafe.getInt(long)
_getLong_raw              sun.misc.Unsafe.getLong(long)
_getFloat_raw             sun.misc.Unsafe.getFloat(long)
_getDouble_raw            sun.misc.Unsafe.getDouble(long)
_getAddress_raw           sun.misc.Unsafe.getAddress(long)
_putByte_raw              sun.misc.Unsafe.putByte(long, byte)
_putShort_raw             sun.misc.Unsafe.putShort(long, short)
_putChar_raw              sun.misc.Unsafe.putChar(long, char)
_putInt_raw               sun.misc.Unsafe.putInt(long, int)
_putLong_raw              sun.misc.Unsafe.putLong(long, long)
_putFloat_raw             sun.misc.Unsafe.putFloat(long, float)
_putDouble_raw            sun.misc.Unsafe.putDouble(long, double)
_putAddress_raw           sun.misc.Unsafe.putAddress(long, long)
_compareAndSwapObject     sun.misc.Unsafe.compareAndSwapObject(Object, long, Object, Object)
_compareAndSwapLong       sun.misc.Unsafe.compareAndSwapLong(Object, long, long, long)
_compareAndSwapInt        sun.misc.Unsafe.compareAndSwapInt(Object, long, int, int)
_putOrderedObject         sun.misc.Unsafe.putOrderedObject(Object, long, Object)
_putOrderedLong           sun.misc.Unsafe.putOrderedLong(Object, long, long)
_putOrderedInt            sun.misc.Unsafe.putOrderedInt(Object, long, int)
_getAndAddInt             sun.misc.Unsafe.getAndAddInt(Object, long, int)
_getAndAddLong            sun.misc.Unsafe.getAndAddLong(Object, long, long)
_getAndSetInt             sun.misc.Unsafe.getAndSet(Object, long, int)
_getAndSetLong            sun.misc.Unsafe.getAndSet(Object, long, long)
_getAndSetObject          sun.misc.Unsafe.getAndSet(Object, long, Object)
_prefetchRead             sun.misc.Unsafe.prefetchRead(Object, long)
_prefetchWrite            sun.misc.Unsafe.prefetchWrite(Object, long)
_prefetchReadStatic       sun.misc.Unsafe.prefetchReadStatic(Object, long)
_prefetchWriteStatic      sun.misc.Unsafe.prefetchWriteStatic(Object, long)

Три новых метода sun.misc.Unsafe.*fence() (memory barriers).

lava.lang.Throwable

_fillInStackTrace         java.lang.Throwable.fillInStackTrace()

java.lang.StringBuilder

_StringBuilder_void          java.lang.StringBuilder()
_StringBuilder_int           java.lang.StringBuilder(int)
_StringBuilder_String        java.lang.StringBuilder(String)
_StringBuilder_append_char   java.lang.StringBuilder.append(char)
_StringBuilder_append_int    java.lang.StringBuilder.append(int)
_StringBuilder_append_String java.lang.StringBuilder.append(String)
_StringBuilder_toString        java.lang.StringBuilder.toString()

java.lang.StringBuffer

_StringBuffer_void          java.lang.StringBuffer()
_StringBuffer_int           java.lang.StringBuffer(int)
_StringBuffer_String        java.lang.StringBuffer(String)
_StringBuffer_append_char   java.lang.StringBuffer.append(char)
_StringBuffer_append_int    java.lang.StringBuffer.append(int)
_StringBuffer_append_String java.lang.StringBuffer.append(String)
_StringBuffer_toString         java.lang.StringBuffer.toString()

java.lang.invoke.MethodHandle

_invokeGeneric            java.lang.invoke.MethodHandle.invoke*
_invokeBasic              java.lang.invoke.MethodHandle.invokeBasic*
_linkToVirtual            java.lang.invoke.MethodHandle.linkToVirtual*
_linkToStatic             java.lang.invoke.MethodHandle.linkToStatic*
_linkToSpecial            java.lang.invoke.MethodHandle.linkToSpecial*
_linkToInterface          java.lang.invoke.MethodHandle.linkToInterface*
_compiledLambdaForm       java.lang.invoke.MethodHandle.*
_profileBoolean java.lang.invoke.MethodHandleImpl.profileBoolean(boolean, int[])

Новый метод java.lang.invoke.MethodHandleImpl.profileBoolean(). Комментарий разработчиков над этим методом: Intrinsified by C2. Counters are used during parsing to calculate branch frequencies..

Boxing и Unboxing

_booleanValue             java.lang.Boolean.booleanValue()
_byteValue                java.lang.Byte.byteValue()
_charValue                java.lang.Character.charValue()
_shortValue               java.lang.Short.shortValue()
_intValue                 java.lang.Integer.intValue()
_longValue                java.lang.Long.longValue()
_floatValue               java.lang.Float.floatValue()
_doubleValue              java.lang.Double.doubleValue()
_Boolean_valueOf          java.lang.Boolean.valueOf(boolean)
_Byte_valueOf             java.lang.Byte.valueOf(byte)
_Character_valueOf        java.lang.Character.valueOf(char)
_Short_valueOf            java.lang.Short.valueOf(short)
_Integer_valueOf          java.lang.Integer.valueOf(int)
_Long_valueOf             java.lang.Long.valueOf(long)
_Float_valueOf            java.lang.Float.valueOf(float)
_Double_valueOf           java.lang.Double.valueOf(double)

Intrinsic-функции в JDK 9

Abstract was added in JDK 9 jdk.internal.HotSpotIntrinsicCandidate, which represents that method call marked @HotSpotIntrinsicCandidate, it can be replaced intrinsikom . “Maybe” in this context means that having an intrinsic function for the corresponding method does not guarantee that the JIT compiler will use the intrinsic .

I will add that a bug was launched with a proposal to rename the annotation to @IntrinsicCandidateand not produce VM-specific entities, as it was with sun.misc.

Intrinsic Functions in JDK 9

java.lang.Object

_hashCode                 java.lang.Object.hashCode()
_getClass                 java.lang.Object.getClass()
_clone                    java.lang.Object.clone()
_notify                   java.lang.Object.notify()
_notifyAll                java.lang.Object.notifyAll()
_Object_init              java.lang.Object()

In JDK 9, for Objectadded a couple of intrinsic functions : _notifyand _notifyAll.

java.lang.Math

_dabs                     java.lang.Math.abs(double)
_dsin                     java.lang.Math.sin(double)
_dcos                     java.lang.Math.cos(double)
_dtan                     java.lang.Math.tan(double)
_datan2                   java.lang.Math.atan2(double, double)
_dsqrt                    java.lang.Math.sqrt(double)
_dlog                     java.lang.Math.log(double)
_dlog10                   java.lang.Math.log10(double)
_dpow                     java.lang.Math.pow(double, double)
_dexp                     java.lang.Math.exp(double)
_min                      java.lang.Math.min(int, int)
_max                      java.lang.Math.max(int, int)
_addExactI                java.lang.Math.addExact(int, int)
_addExactL                java.lang.Math.addExact(long, long)
_decrementExactI          java.lang.Math.decrementExact(int)
_decrementExactL          java.lang.Math.decrementExact(long)
_incrementExactI          java.lang.Math.incrementExact(int)
_incrementExactL          java.lang.Math.incrementExact(long)
_multiplyExactI           java.lang.Math.multiplyExact(int, int)
_multiplyExactL           java.lang.Math.multiplyExact(long, long)
_negateExactI             java.lang.Math.negateExact(int)
_negateExactL             java.lang.Math.negateExact(long)
_subtractExactI           java.lang.Math.subtractExact(int, int)
_subtractExactL           java.lang.Math.subtractExact(long, long)
_fmaD                     java.lang.Math.fma(double, double, double)
_fmaF                     java.lang.Math.fma(float, float, float)

В JDK 9 в класс java.lang.Math добавили пару методов fma (~ a * b + c) и для них соответствующие intrinsic-функции.

Double, Float

_floatToRawIntBits        java.lang.Float.floatToRawIntBits(float)
_floatToIntBits           java.lang.Float.floatToIntBits(float)
_intBitsToFloat           java.lang.Float.intBitsToFloat(int)
_doubleToRawLongBits      java.lang.Double.doubleToRawLongBits(double)
_doubleToLongBits         java.lang.Double.doubleToLongBits(double)
_longBitsToDouble         java.lang.Double.longBitsToDouble(long)

Integer, Long, Character, Short

_numberOfLeadingZeros_i   java.lang.Integer.numberOfLeadingZeros(int)
_numberOfLeadingZeros_l   java.lang.Long.numberOfLeadingZeros(long)
_numberOfTrailingZeros_i  java.lang.Integer.numberOfTrailingZeros(int)
_numberOfTrailingZeros_l  java.lang.Long.numberOfTrailingZeros(long)
_bitCount_i               java.lang.Integer.bitCount(int)
_bitCount_l               java.lang.Long.bitCount(long)
_reverseBytes_i           java.lang.Integer.reverseBytes(int)
_reverseBytes_l           java.lang.Long.reverseBytes(long)
_reverseBytes_c           java.lang.Character.reverseBytes(char)
_reverseBytes_s           java.lang.Short.reverseBytes(short)
_Integer_toString         java.lang.Integer.toString(int)

java.lang.System

_identityHashCode         java.lang.System.identityHashCode(Object)
_currentTimeMillis        java.lang.System.currentTimeMillis()
_nanoTime                 java.lang.System.nanoTime()
_arraycopy                java.lang.System.arraycopy(Object, int, Object, int, int)

java.lang.Thread

_isInterrupted            java.lang.Thread.isInterrupted(boolean)
_currentThread            java.lang.Thread.currentThread()
_onSpinWait               java.lang.Thread.onSpinWait()

В JDK 9 появился новый метод onSpinWait — реализация busy waiting.

java.lang.Class

_isAssignableFrom         java.lang.Class.isAssignableFrom(Class)
_isInstance               java.lang.Class.isInstance(Object)
_getModifiers             java.lang.Class.getModifiers()
_isInterface              java.lang.Class.isInterface()
_isArray                  java.lang.Class.isArray()
_isPrimitive              java.lang.Class.isPrimitive()
_getSuperclass            java.lang.Class.getSuperclass()
_Class_cast               java.lang.Class.cast(Object)

Удалена intrinsic-функция для java.lang.Class.getComponentType() (getComponentType перестал быть native-методом).
В JDK 9 добавлен интринсик для метода cast.

Reflection

_getClassAccessFlags      sun.reflect.Reflection.getClassAccessFlags(Class)
_getCallerClass           sun.reflect.Reflection.getCallerClass()
_getLength                java.lang.reflect.Array.getLength(Object)
_newArray                 java.lang.reflect.Array.newArray(Class, int)
_invoke                   java.lang.reflect.Method.invoke(Object, Object...)

java.util.Arrays

_copyOf                   java.util.Arrays.copyOf(Object[], int, Class)
_copyOfRange              java.util.Arrays.copyOfRange(Object[], int, int, Class)
_equalsC                  java.util.Arrays.equals(char[], char[])
_equalsB                  java.util.Arrays.equals(boolean[], boolean[])

В JDK 9 добавлен intrinsic для java.util.Arrays.equals(boolean[], boolean[]).

StringUTF16 и StringLatin1

_compressStringC          java.lang.StringUTF16.compress(char[], int, byte[], int, int)
_compressStringB          java.lang.StringUTF16.compress(byte[], int, byte[], int, int)
_inflateStringC           java.lang.StringLatin1.inflate(byte[], int, char[], int, int)
_inflateStringB           java.lang.StringLatin1.inflate(byte[], int, byte[], int, int)
_toBytesStringU           java.lang.StringUTF16.toBytes(char[], int, int)
_getCharsStringU          java.lang.StringUTF16.getChars(byte[], int, int, char[], int)
_getCharStringU           java.lang.StringUTF16.getChar(byte[], int)
_putCharStringU           java.lang.StringUTF16.putChar(byte[] int, int)
_compareToL               java.lang.StringLatin1.compareTo(byte[], byte[])
_compareToU               java.lang.StringUTF16.compareTo(byte[], byte[])
_compareToLU              java.lang.StringLatin1.compareToUTF16(byte[], byte[])
_compareToUL              java.lang.StringUTF16.compareToLatin1(byte[], byte[])
_indexOfL                 java.lang.StringLatin1.indexOf(byte[], byte[])
_indexOfU                 java.lang.StringUTF16.indexOf(byte[], byte[])
_indexOfUL                java.lang.StringUTF16.indexOfLatin1(byte[], byte[])
_indexOfIL                java.lang.StringLatin1.indexOf(byte[], int, byte[], int, int)
_indexOfIU                java.lang.StringUTF16.indexOf(byte[], int, byte[], int, int)
_indexOfIUL               java.lang.StringUTF16.indexOfLatin1(byte[], int, byte[], int, int)
_indexOfU_char            java.lang.StringUTF16.indexOfChar(byte[], int, int, int)
_equalsL                  java.lang.StringLatin1.equals(byte[], byte[])
_equalsU                  java.lang.StringUTF16.equals(byte[], byte[])

В связи с изменениями в классе String в JDK 9 — JEP-254, появились два новых класса StringUTF16 и StringLatin1.

jdk.internal.util.Preconditions

_Preconditions_checkIndex jdk.internal.util.Preconditions.checkIndex(int, int, java.util.function.BiFunction)

Новый класс в JDK 9 с разными вспомогательными методами. Интринсик добавлен для метода проверки попадания значения в заданные границы.

java.lang.StringCoding

_hasNegatives             java.lang.StringCoding.hasNegatives(byte[], int, int)
_encodeByteISOArray       java.lang.StringCoding.encodeISOArray(byte[], int, byte[], int, int)

Ещё один новый класс в JDK 9.

java.lang.String

_String_String            java.lang.String(String)

Удалены прочие intrinsic-функции (_compareTo, _equals, _indexOf), т.к. реализация соответствующих методов перешла к классам StringUTF16 и StringLatin1. Подробнее об изменениях в классе String в JEP-254.

java.nio.Buffer

_checkIndex               java.nio.Buffer.checkIndex(int)

sun.nio.cs.ISO_8859_1$Encoder

_encodeISOArray     sun.nio.cs.ISO_8859_1.Encoder.encodeISOArray(char[], int, byte[], int, int)

В JDK 9 подвергся рефакторингу класс sun.nio.cs.ISO_8859_1$Encoder: был добавлен новый метод implEncodeISOArray, старый интринсик привязан к новому методу.

java.math.BigInteger

_multiplyToLen       java.math.BigInteger.multiplyToLen(int[], int, int[], int, int[])
_squareToLen         java.math.BigInteger.squareToLen(int[], int, int[], int)
_mulAdd              java.math.BigInteger.mulAdd(int[], int[], int, int, int)
_montgomeryMultiply  java.math.BigInteger.montgomeryMultiply(int[], int[], int[], int, long, int[])
_montgomerySquare    java.math.BigInteger.montgomerySquare(int[], int[], int, long, int[])

java.util.ArraysSupport

_vectorizedMismatch java.util.ArraysSupport.vectorizedMismatch(Object, long, Object, long, int, int)

Новый класс в JDK 9.

java.lang.ref.Reference

_Reference_get            java.lang.ref.Reference.get()

Cryptography

_aescrypt_encryptBlock com.sun.crypto.provider.AESCrypt.encryptBlock(byte[], in, byte[], int)
_aescrypt_decryptBlock com.sun.crypto.provider.AESCrypt.decryptBlock(byte[], in, byte[], int)
_cipherBlockChaining_encryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.encrypt(byte[], int, int, byte[], int)
_cipherBlockChaining_decryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.decrypt(byte[], int, int, byte[], int)
_counterMode_AESCrypt com.sun.crypto.provider.CounterMode.implCrypt(byte[], int, int, byte[], int)
_ghash_processBlocks com.sun.crypto.provider.GHASH.processBlocks(byte[], int, int, long[], long[])

В JDK 9 реализация метода CounterMode.crypt() вынесена в метод implCrypt с добавлением интринсика. Аналогичным образом отрефакторен GHASH.

sun.security.provider.*

_sha_implCompress sun.security.provider.SHA.implCompress(byte[], int)
_sha2_implCompress sun.security.provider.SHA2.implCompress(byte[], int)
_sha5_implCompress sun.security.provider.SHA5.implCompress(byte[], int)
_digestBase_implCompressMB sun.security.provider.DigestBase.implCompressMultiBlock0(byte[], int, int)

Рефакторинг DigestBase в JDK 9.

java.util.zip.CRC32 и java.util.zip.CRC32C

_updateCRC32               java.util.zip.CRC32.update(int2_int_signature)
_updateBytesCRC32          java.util.zip.CRC32.updateBytes0(updateBytes_signature)
_updateByteBufferCRC32     java.util.zip.CRC32.updateByteBuffer0(updateByteBuffer_signature)
_updateBytesCRC32C             java.util.zip.CRC32C.updateBytes(int, byte[], int, int)
_updateDirectByteBufferCRC32C  java.util.zip.CRC32C.updateDirectByteBuffer(int, long, int, int)
_updateBytesAdler32       java.util.zip.Adler32.updateBytes(int, byte[], int, int)
_updateByteBufferAdler32  java.util.zip.Adler32.updateByteBuffer(int, long, int, int)

Ещё код, подвергшийся рефакторингу в JDK 9.
Новый класс java.util.zip.CRC32C.

jdk.internal.misc.Unsafe

_allocateInstance         jdk.internal.misc.Unsafe.allocateInstance(Class)
_allocateUninitializedArray jdk.internal.misc.Unsafe.allocateUninitializedArray0(Class, int)
_copyMemory               jdk.internal.misc.Unsafe.copyMemory0(Object, long, Object, long, long)
_park                     jdk.internal.misc.Unsafe.park(boolean, long)
_unpark                   jdk.internal.misc.Unsafe.unpark(Object)
_loadFence                jdk.internal.misc.Unsafe.loadFence()
_storeFence                jdk.internal.misc.Unsafe.storeFence()
_fullFence                 jdk.internal.misc.Unsafe.fullFence()
_getObject                 jdk.internal.misc.Unsafe.getObject(Object, long)
_getBoolean                jdk.internal.misc.Unsafe.getBoolean(Object, long)
_getByte                   jdk.internal.misc.Unsafe.getByte(Object, long)
_getShort                  jdk.internal.misc.Unsafe.getShort(Object, long)
_getChar                   jdk.internal.misc.Unsafe.getChar(Object, long)
_getInt                    jdk.internal.misc.Unsafe.getInt(Object, long)
_getLong                   jdk.internal.misc.Unsafe.getLong(Object, long)
_getFloat                  jdk.internal.misc.Unsafe.getFloat(Object, long)
_getDouble                 jdk.internal.misc.Unsafe.getDouble(Object, long)
_putObject                 jdk.internal.misc.Unsafe.putObject(Object, long, Object)
_putBoolean                jdk.internal.misc.Unsafe.putBoolean(Object, long, boolean)
_putByte                   jdk.internal.misc.Unsafe.putByte(Object, long, byte)
_putShort                  jdk.internal.misc.Unsafe.putShort(Object, long, short)
_putChar                   jdk.internal.misc.Unsafe.putChar(Object, long, char)
_putInt                    jdk.internal.misc.Unsafe.putInt(Object, long, int)
_putLong                   jdk.internal.misc.Unsafe.putLong(Object, long, long)
_putFloat                  jdk.internal.misc.Unsafe.putFloat(Object, long, float)
_putDouble                 jdk.internal.misc.Unsafe.putDouble(Object, long, double)
_getObjectVolatile         jdk.internal.misc.Unsafe.getObjectVolatile(Object, long)
_getBooleanVolatile        jdk.internal.misc.Unsafe.getBooleanVolatile(Object, long)
_getByteVolatile           jdk.internal.misc.Unsafe.getByteVolatile(Object, long)
_getShortVolatile          jdk.internal.misc.Unsafe.getShortVolatile(Object, long)
_getCharVolatile           jdk.internal.misc.Unsafe.getCharVolatile(Object, long)
_getIntVolatile            jdk.internal.misc.Unsafe.getIntVolatile(Object, long)
_getLongVolatile           jdk.internal.misc.Unsafe.getLongVolatile(Object, long)
_getFloatVolatile          jdk.internal.misc.Unsafe.getFloatVolatile(Object, long)
_getDoubleVolatile         jdk.internal.misc.Unsafe.getDoubleVolatile(Object, long)
_putObjectVolatile         jdk.internal.misc.Unsafe.putObjectVolatile(Object, long, Object)
_putBooleanVolatile        jdk.internal.misc.Unsafe.putBooleanVolatile(Object, long, boolean)
_putByteVolatile           jdk.internal.misc.Unsafe.putByteVolatile(Object, long, byte)
_putShortVolatile          jdk.internal.misc.Unsafe.putShortVolatile(Object, long, short)
_putCharVolatile           jdk.internal.misc.Unsafe.putCharVolatile(Object, long, char)
_putIntVolatile            jdk.internal.misc.Unsafe.putIntVolatile(Object, long, int)
_putLongVolatile           jdk.internal.misc.Unsafe.putLongVolatile(Object, long, long)
_putFloatVolatile          jdk.internal.misc.Unsafe.putFloatVolatile(Object, long, float)
_putDoubleVolatile         jdk.internal.misc.Unsafe.putDoubleVolatile(Object, long, double)
_getObjectOpaque          jdk.internal.misc.Unsafe.getObjectOpaque(Object, long)
_getBooleanOpaque         jdk.internal.misc.Unsafe.getBooleanOpaque(Object, long)
_getByteOpaque            jdk.internal.misc.Unsafe.getByteOpaque(Object, long)
_getShortOpaque           jdk.internal.misc.Unsafe.getShortOpaque(Object, long)
_getCharOpaque            jdk.internal.misc.Unsafe.getCharOpaque(Object, long)
_getIntOpaque             jdk.internal.misc.Unsafe.getIntOpaque(Object, long)
_getLongOpaque            jdk.internal.misc.Unsafe.getLongOpaque(Object, long)
_getFloatOpaque           jdk.internal.misc.Unsafe.getFloatOpaque(Object, long)
_getDoubleOpaque          jdk.internal.misc.Unsafe.getDoubleOpaque(Object, long)
_putObjectOpaque          jdk.internal.misc.Unsafe.putObjectOpaque(Object, long, Object)
_putBooleanOpaque         jdk.internal.misc.Unsafe.putBooleanOpaque(Object, long, boolean)
_putByteOpaque            jdk.internal.misc.Unsafe.putByteOpaque(Object, long, byte)
_putShortOpaque           jdk.internal.misc.Unsafe.putShortOpaque(Object, long, short)
_putCharOpaque            jdk.internal.misc.Unsafe.putCharOpaque(Object, long, char)
_putIntOpaque             jdk.internal.misc.Unsafe.putIntOpaque(Object, long, int)
_putLongOpaque            jdk.internal.misc.Unsafe.putLongOpaque(Object, long, long)
_putFloatOpaque           jdk.internal.misc.Unsafe.putFloatOpaque(Object, long, float)
_putDoubleOpaque          jdk.internal.misc.Unsafe.putDoubleOpaque(Object, long, double)
_getObjectAcquire        jdk.internal.misc.Unsafe.getObjectAcquire(Object, long)
_getBooleanAcquire       jdk.internal.misc.Unsafe.getBooleanAcquire(Object, long)
_getByteAcquire          jdk.internal.misc.Unsafe.getByteAcquire(Object, long)
_getShortAcquire         jdk.internal.misc.Unsafe.getShortAcquire(Object, long)
_getCharAcquire          jdk.internal.misc.Unsafe.getCharAcquire(Object, long)
_getIntAcquire           jdk.internal.misc.Unsafe.getIntAcquire(Object, long)
_getLongAcquire          jdk.internal.misc.Unsafe.getLongAcquire(Object, long)
_getFloatAcquire         jdk.internal.misc.Unsafe.getFloatAcquire(Object, long)
_getDoubleAcquire        jdk.internal.misc.Unsafe.getDoubleAcquire(Object, long)
_putObjectAcquire        jdk.internal.misc.Unsafe.putObjectAcquire(Object, long, Object)
_putBooleanAcquire       jdk.internal.misc.Unsafe.putBooleanAcquire(Object, long, boolean)
_putByteAcquire          jdk.internal.misc.Unsafe.putByteAcquire(Object, long, byte)
_putShortAcquire         jdk.internal.misc.Unsafe.putShortAcquire(Object, long, short)
_putCharAcquire          jdk.internal.misc.Unsafe.putCharAcquire(Object, long, char)
_putIntAcquire           jdk.internal.misc.Unsafe.putIntAcquire(Object, long, int)
_putLongAcquire          jdk.internal.misc.Unsafe.putLongAcquire(Object, long, long)
_putFloatAcquire         jdk.internal.misc.Unsafe.putFloatAcquire(Object, long, float)
_putDoubleAcquire        jdk.internal.misc.Unsafe.putDoubleAcquire(Object, long, double)
_getShortUnaligned         jdk.internal.misc.Unsafe.getShortUnaligned(Object, long)
_getCharUnaligned          jdk.internal.misc.Unsafe.getCharUnaligned(Object, long)
_getIntUnaligned           jdk.internal.misc.Unsafe.getIntUnaligned(Object, long)
_getLongUnaligned          jdk.internal.misc.Unsafe.getLongUnaligned(Object, long)
_putShortUnaligned         jdk.internal.misc.Unsafe.putShortUnaligned(Object, long, short)
_putCharUnaligned          jdk.internal.misc.Unsafe.putCharUnaligned(Object, long, char)
_putIntUnaligned           jdk.internal.misc.Unsafe.putIntUnaligned(Object, long, int)
_putLongUnaligned          jdk.internal.misc.Unsafe.putLongUnaligned(Object, long, long)
_compareAndSetObject              jdk.internal.misc.Unsafe.compareAndSetObject(Object, long, Object, Object)
_compareAndExchangeObject         jdk.internal.misc.Unsafe.compareAndExchangeObject(Object, long, Object, Object)
_compareAndExchangeObjectAcquire  jdk.internal.misc.Unsafe.compareAndExchangeObjectAcquire(Object, long, Object, Object)
_compareAndExchangeObjectRelease  jdk.internal.misc.Unsafe.compareAndExchangeObjectRelease(Object, long, Object, Object)
_compareAndSetLong                jdk.internal.misc.Unsafe.compareAndSetLong(Object, long, long, long)
_compareAndExchangeLong           jdk.internal.misc.Unsafe.compareAndExchangeLong(Object, long, long, long)
_compareAndExchangeLongAcquire    jdk.internal.misc.Unsafe.compareAndExchangeLongAcquire(Object, long, long, long)
_compareAndExchangeLongRelease    jdk.internal.misc.Unsafe.compareAndExchangeLongRelease(Object, long, long, long)
_compareAndSetInt                 jdk.internal.misc.Unsafe.compareAndSetInt(Object, long, int, int)
_compareAndExchangeInt            jdk.internal.misc.Unsafe.compareAndExchangeInt(Object, long, int, int)
_compareAndExchangeIntAcquire     jdk.internal.misc.Unsafe.compareAndExchangeIntAcquire(Object, long, int, int)
_compareAndExchangeIntRelease     jdk.internal.misc.Unsafe.compareAndExchangeIntRelease(Object, long, int, int)
_compareAndSetByte                jdk.internal.misc.Unsafe.compareAndSetByte(Object, long, byte, byte)
_compareAndExchangeByte           jdk.internal.misc.Unsafe.compareAndExchangeByte(Object, long, byte, byte)
_compareAndExchangeByteAcquire    jdk.internal.misc.Unsafe.compareAndExchangeByteAcquire(Object, long, byte, byte)
_compareAndExchangeByteRelease    jdk.internal.misc.Unsafe.compareAndExchangeByteRelease(Object, long, byte, byte)
_compareAndSetShort               jdk.internal.misc.Unsafe.compareAndSetShort(Object, long, short, short)
_compareAndExchangeShort          jdk.internal.misc.Unsafe.compareAndExchangeShort(Object, long, short, short)
_compareAndExchangeShortAcquire   jdk.internal.misc.Unsafe.compareAndExchangeShortAcquire(Object, long, short, short)
_compareAndExchangeShortRelease   jdk.internal.misc.Unsafe.compareAndExchangeShortRelease(Object, long, short, short)
_weakCompareAndSetObjectPlain     jdk.internal.misc.Unsafe.weakCompareAndSetObjectPlain(Object, long, Object, Object)
_weakCompareAndSetObjectAcquire   jdk.internal.misc.Unsafe.weakCompareAndSetObjectAcquire(Object, long, Object, Object)
_weakCompareAndSetObjectRelease   jdk.internal.misc.Unsafe.weakCompareAndSetObjectRelease(Object, long, Object, Object)
_weakCompareAndSetObject          jdk.internal.misc.Unsafe.weakCompareAndSetObject(Object, long, Object, Object)
_weakCompareAndSetLongPlain       jdk.internal.misc.Unsafe.weakCompareAndSetLongPlain(Object, long, long, long)
_weakCompareAndSetLongAcquire     jdk.internal.misc.Unsafe.weakCompareAndSetLongAcquire(Object, long, long, long)
_weakCompareAndSetLongRelease     jdk.internal.misc.Unsafe.weakCompareAndSetLongRelease(Object, long, long, long)
_weakCompareAndSetLong            jdk.internal.misc.Unsafe.weakCompareAndSetLong(Object, long, long, long)
_weakCompareAndSetIntPlain        jdk.internal.misc.Unsafe.weakCompareAndSetIntPlain(Object, long, int, int)
_weakCompareAndSetIntAcquire      jdk.internal.misc.Unsafe.weakCompareAndSetIntAcquire(Object, long, int, int)
_weakCompareAndSetIntRelease      jdk.internal.misc.Unsafe.weakCompareAndSetIntRelease(Object, long, int, int)
_weakCompareAndSetInt             jdk.internal.misc.Unsafe.weakCompareAndSetInt(Object, long, int, int)
_weakCompareAndSetBytePlain       jdk.internal.misc.Unsafe.weakCompareAndSetBytePlain(Object, long, byte, byte)
_weakCompareAndSetByteAcquire     jdk.internal.misc.Unsafe.weakCompareAndSetByteAcquire(Object, long, byte, byte)
_weakCompareAndSetByteRelease     jdk.internal.misc.Unsafe.weakCompareAndSetByteRelease(Object, long, byte, byte)
_weakCompareAndSetByte            jdk.internal.misc.Unsafe.weakCompareAndSetByte(Object, long, byte, byte)
_weakCompareAndSetShortPlain      jdk.internal.misc.Unsafe.weakCompareAndSetShortPlain(Object, long, short, short)
_weakCompareAndSetShortAcquire    jdk.internal.misc.Unsafe.weakCompareAndSetShortAcquire(Object, long, short, short)
_weakCompareAndSetShortRelease    jdk.internal.misc.Unsafe.weakCompareAndSetShortRelease(Object, long, short, short)
_weakCompareAndSetShort           jdk.internal.misc.Unsafe.weakCompareAndSetShort(Object, long, short, short)
_getAndAddInt             jdk.internal.misc.Unsafe.getAndAddInt(Object, long, int)
_getAndAddLong            jdk.internal.misc.Unsafe.getAndAddLong(Object, long, long)
_getAndAddByte            jdk.internal.misc.Unsafe.getAndAddByte(Object, long, byte)
_getAndAddShort           jdk.internal.misc.Unsafe.getAndAddShort(Object, long, short)
_getAndSetInt             jdk.internal.misc.Unsafe.getAndSetInt(Object, long, int)
_getAndSetLong            jdk.internal.misc.Unsafe.getAndSetLong(Object, long, int)
_getAndSetByte            jdk.internal.misc.Unsafe.getAndSetByte(Object, long, byte)
_getAndSetShort           jdk.internal.misc.Unsafe.getAndSetShort(Object, long, short)
_getAndSetObject          jdk.internal.misc.Unsafe.getAndSetObject(Object, long, Object)

Класс sun.misc.Unsafe переехал в другой пакет — jdk.internal.misc.Unsafe, также был сильно переработан. Добавлено большое число интринсиков.

lava.lang.Throwable

Из JDK 9 удалена intrinsic-функция для Throwable.fillInStackTrace().

java.lang.StringBuilder

_StringBuilder_void          java.lang.StringBuilder()
_StringBuilder_int           java.lang.StringBuilder(int)
_StringBuilder_String        java.lang.StringBuilder(String)
_StringBuilder_append_char   java.lang.StringBuilder.append(char)
_StringBuilder_append_int    java.lang.StringBuilder.append(int)
_StringBuilder_append_String java.lang.StringBuilder.append(String)
_StringBuilder_toString        java.lang.StringBuilder.toString()

java.lang.StringBuffer

_StringBuffer_void          java.lang.StringBuffer()
_StringBuffer_int           java.lang.StringBuffer(int)
_StringBuffer_String        java.lang.StringBuffer(String)
_StringBuffer_append_char   java.lang.StringBuffer.append(char)
_StringBuffer_append_int    java.lang.StringBuffer.append(int)
_StringBuffer_append_String java.lang.StringBuffer.append(String)
_StringBuffer_toString         java.lang.StringBuffer.toString()

java.lang.invoke.MethodHandle

_invokeGeneric            java.lang.invoke.MethodHandle.invoke*
_invokeBasic              java.lang.invoke.MethodHandle.invokeBasic*
_linkToVirtual            java.lang.invoke.MethodHandle.linkToVirtual*
_linkToStatic             java.lang.invoke.MethodHandle.linkToStatic*
_linkToSpecial            java.lang.invoke.MethodHandle.linkToSpecial*
_linkToInterface          java.lang.invoke.MethodHandle.linkToInterface*
_compiledLambdaForm       java.lang.invoke.MethodHandle.*
_profileBoolean    java.lang.invoke.MethodHandleImpl.profileBoolean(boolean, int[])
_isCompileConstant java.lang.invoke.MethodHandleImpl.isCompileConstant(Object)

Новый метод java.lang.invoke.MethodHandleImpl.isCompileConstant().

Boxing и Unboxing

_booleanValue             java.lang.Boolean.booleanValue()
_byteValue                java.lang.Byte.byteValue()
_charValue                java.lang.Character.charValue()
_shortValue               java.lang.Short.shortValue()
_intValue                 java.lang.Integer.intValue()
_longValue                java.lang.Long.longValue()
_floatValue               java.lang.Float.floatValue()
_doubleValue              java.lang.Double.doubleValue()
_Boolean_valueOf          java.lang.Boolean.valueOf(boolean)
_Byte_valueOf             java.lang.Byte.valueOf(byte)
_Character_valueOf        java.lang.Character.valueOf(char)
_Short_valueOf            java.lang.Short.valueOf(short)
_Integer_valueOf          java.lang.Integer.valueOf(int)
_Long_valueOf             java.lang.Long.valueOf(long)
_Float_valueOf            java.lang.Float.valueOf(float)
_Double_valueOf           java.lang.Double.valueOf(double)

java.util.stream.StreamsRangeIntSpliterator

_forEachRemaining java_util_stream_StreamsRangeIntSpliterator.forEachRemaining(java.util.function.IntConsumer)

Intrinsic for the method appeared in JDK 9 StreamRangeIntSpliterator.forEachRemaining.

Intrinsic Functions in JDK 10

In JDK 10, the number of intrinsics has not changed and completely coincides with JDK 9.

Intrinsic Functions in JDK 10

java.lang.Object

_hashCode                 java.lang.Object.hashCode()
_getClass                 java.lang.Object.getClass()
_clone                    java.lang.Object.clone()
_notify                   java.lang.Object.notify()
_notifyAll                java.lang.Object.notifyAll()
_Object_init              java.lang.Object()

java.lang.Math

_dabs                     java.lang.Math.abs(double)
_dsin                     java.lang.Math.sin(double)
_dcos                     java.lang.Math.cos(double)
_dtan                     java.lang.Math.tan(double)
_datan2                   java.lang.Math.atan2(double, double)
_dsqrt                    java.lang.Math.sqrt(double)
_dlog                     java.lang.Math.log(double)
_dlog10                   java.lang.Math.log10(double)
_dpow                     java.lang.Math.pow(double, double)
_dexp                     java.lang.Math.exp(double)
_min                      java.lang.Math.min(int, int)
_max                      java.lang.Math.max(int, int)
_addExactI                java.lang.Math.addExact(int, int)
_addExactL                java.lang.Math.addExact(long, long)
_decrementExactI          java.lang.Math.decrementExact(int)
_decrementExactL          java.lang.Math.decrementExact(long)
_incrementExactI          java.lang.Math.incrementExact(int)
_incrementExactL          java.lang.Math.incrementExact(long)
_multiplyExactI           java.lang.Math.multiplyExact(int, int)
_multiplyExactL           java.lang.Math.multiplyExact(long, long)
_negateExactI             java.lang.Math.negateExact(int)
_negateExactL             java.lang.Math.negateExact(long)
_subtractExactI           java.lang.Math.subtractExact(int, int)
_subtractExactL           java.lang.Math.subtractExact(long, long)
_fmaD                     java.lang.Math.fma(double, double, double)
_fmaF                     java.lang.Math.fma(float, float, float)

Double Float

_floatToRawIntBits        java.lang.Float.floatToRawIntBits(float)
_floatToIntBits           java.lang.Float.floatToIntBits(float)
_intBitsToFloat           java.lang.Float.intBitsToFloat(int)
_doubleToRawLongBits      java.lang.Double.doubleToRawLongBits(double)
_doubleToLongBits         java.lang.Double.doubleToLongBits(double)
_longBitsToDouble         java.lang.Double.longBitsToDouble(long)

Integer, Long, Character, Short

_numberOfLeadingZeros_i   java.lang.Integer.numberOfLeadingZeros(int)
_numberOfLeadingZeros_l   java.lang.Long.numberOfLeadingZeros(long)
_numberOfTrailingZeros_i  java.lang.Integer.numberOfTrailingZeros(int)
_numberOfTrailingZeros_l  java.lang.Long.numberOfTrailingZeros(long)
_bitCount_i               java.lang.Integer.bitCount(int)
_bitCount_l               java.lang.Long.bitCount(long)
_reverseBytes_i           java.lang.Integer.reverseBytes(int)
_reverseBytes_l           java.lang.Long.reverseBytes(long)
_reverseBytes_c           java.lang.Character.reverseBytes(char)
_reverseBytes_s           java.lang.Short.reverseBytes(short)
_Integer_toString         java.lang.Integer.toString(int)

java.lang.System

_identityHashCode         java.lang.System.identityHashCode(Object)
_currentTimeMillis        java.lang.System.currentTimeMillis()
_nanoTime                 java.lang.System.nanoTime()
_arraycopy                java.lang.System.arraycopy(Object, int, Object, int, int)

java.lang.Thread

_isInterrupted            java.lang.Thread.isInterrupted(boolean)
_currentThread            java.lang.Thread.currentThread()
_onSpinWait               java.lang.Thread.onSpinWait()

java.lang.Class

_isAssignableFrom         java.lang.Class.isAssignableFrom(Class)
_isInstance               java.lang.Class.isInstance(Object)
_getModifiers             java.lang.Class.getModifiers()
_isInterface              java.lang.Class.isInterface()
_isArray                  java.lang.Class.isArray()
_isPrimitive              java.lang.Class.isPrimitive()
_getSuperclass            java.lang.Class.getSuperclass()
_Class_cast               java.lang.Class.cast(Object)

Reflection

_getClassAccessFlags      sun.reflect.Reflection.getClassAccessFlags(Class)
_getCallerClass           sun.reflect.Reflection.getCallerClass()
_getLength                java.lang.reflect.Array.getLength(Object)
_newArray                 java.lang.reflect.Array.newArray(Class, int)
_invoke                   java.lang.reflect.Method.invoke(Object, Object...)

java.util.Arrays

_copyOf                   java.util.Arrays.copyOf(Object[], int, Class)
_copyOfRange              java.util.Arrays.copyOfRange(Object[], int, int, Class)
_equalsC                  java.util.Arrays.equals(char[], char[])
_equalsB                  java.util.Arrays.equals(boolean[], boolean[])

StringUTF16 and StringLatin1

_compressStringC          java.lang.StringUTF16.compress(char[], int, byte[], int, int)
_compressStringB          java.lang.StringUTF16.compress(byte[], int, byte[], int, int)
_inflateStringC           java.lang.StringLatin1.inflate(byte[], int, char[], int, int)
_inflateStringB           java.lang.StringLatin1.inflate(byte[], int, byte[], int, int)
_toBytesStringU           java.lang.StringUTF16.toBytes(char[], int, int)
_getCharsStringU          java.lang.StringUTF16.getChars(byte[], int, int, char[], int)
_getCharStringU           java.lang.StringUTF16.getChar(byte[], int)
_putCharStringU           java.lang.StringUTF16.putChar(byte[] int, int)
_compareToL               java.lang.StringLatin1.compareTo(byte[], byte[])
_compareToU               java.lang.StringUTF16.compareTo(byte[], byte[])
_compareToLU              java.lang.StringLatin1.compareToUTF16(byte[], byte[])
_compareToUL              java.lang.StringUTF16.compareToLatin1(byte[], byte[])
_indexOfL                 java.lang.StringLatin1.indexOf(byte[], byte[])
_indexOfU                 java.lang.StringUTF16.indexOf(byte[], byte[])
_indexOfUL                java.lang.StringUTF16.indexOfLatin1(byte[], byte[])
_indexOfIL                java.lang.StringLatin1.indexOf(byte[], int, byte[], int, int)
_indexOfIU                java.lang.StringUTF16.indexOf(byte[], int, byte[], int, int)
_indexOfIUL               java.lang.StringUTF16.indexOfLatin1(byte[], int, byte[], int, int)
_indexOfU_char            java.lang.StringUTF16.indexOfChar(byte[], int, int, int)
_equalsL                  java.lang.StringLatin1.equals(byte[], byte[])
_equalsU                  java.lang.StringUTF16.equals(byte[], byte[])

jdk.internal.util.Preconditions

_Preconditions_checkIndex jdk.internal.util.Preconditions.checkIndex(int, int, java.util.function.BiFunction)

java.lang.StringCoding

_hasNegatives             java.lang.StringCoding.hasNegatives(byte[], int, int)
_encodeByteISOArray       java.lang.StringCoding.encodeISOArray(byte[], int, byte[], int, int)

java.lang.String

_String_String            java.lang.String(String)

java.nio.Buffer

_checkIndex               java.nio.Buffer.checkIndex(int)

sun.nio.cs.ISO_8859_1 $ Encoder

_encodeISOArray     sun.nio.cs.ISO_8859_1.Encoder.encodeISOArray(char[], int, byte[], int, int)

java.math.BigInteger

_multiplyToLen       java.math.BigInteger.multiplyToLen(int[], int, int[], int, int[])
_squareToLen         java.math.BigInteger.squareToLen(int[], int, int[], int)
_mulAdd              java.math.BigInteger.mulAdd(int[], int[], int, int, int)
_montgomeryMultiply  java.math.BigInteger.montgomeryMultiply(int[], int[], int[], int, long, int[])
_montgomerySquare    java.math.BigInteger.montgomerySquare(int[], int[], int, long, int[])

java.util.ArraysSupport

_vectorizedMismatch java.util.ArraysSupport.vectorizedMismatch(Object, long, Object, long, int, int)

java.lang.ref.Reference

_Reference_get            java.lang.ref.Reference.get()

Cryptography

_aescrypt_encryptBlock com.sun.crypto.provider.AESCrypt.encryptBlock(byte[], in, byte[], int)
_aescrypt_decryptBlock com.sun.crypto.provider.AESCrypt.decryptBlock(byte[], in, byte[], int)
_cipherBlockChaining_encryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.encrypt(byte[], int, int, byte[], int)
_cipherBlockChaining_decryptAESCrypt com.sun.crypto.provider.CipherBlockChaining.decrypt(byte[], int, int, byte[], int)
_counterMode_AESCrypt com.sun.crypto.provider.CounterMode.implCrypt(byte[], int, int, byte[], int)
_ghash_processBlocks com.sun.crypto.provider.GHASH.processBlocks(byte[], int, int, long[], long[])

sun.security.provider. *

_sha_implCompress sun.security.provider.SHA.implCompress(byte[], int)
_sha2_implCompress sun.security.provider.SHA2.implCompress(byte[], int)
_sha5_implCompress sun.security.provider.SHA5.implCompress(byte[], int)
_digestBase_implCompressMB sun.security.provider.DigestBase.implCompressMultiBlock0(byte[], int, int)

java.util.zip.CRC32 and java.util.zip.CRC32C

_updateCRC32               java.util.zip.CRC32.update(int2_int_signature)
_updateBytesCRC32          java.util.zip.CRC32.updateBytes0(updateBytes_signature)
_updateByteBufferCRC32     java.util.zip.CRC32.updateByteBuffer0(updateByteBuffer_signature)
_updateBytesCRC32C             java.util.zip.CRC32C.updateBytes(int, byte[], int, int)
_updateDirectByteBufferCRC32C  java.util.zip.CRC32C.updateDirectByteBuffer(int, long, int, int)
_updateBytesAdler32       java.util.zip.Adler32.updateBytes(int, byte[], int, int)
_updateByteBufferAdler32  java.util.zip.Adler32.updateByteBuffer(int, long, int, int)

jdk.internal.misc.Unsafe

_allocateInstance         jdk.internal.misc.Unsafe.allocateInstance(Class)
_allocateUninitializedArray jdk.internal.misc.Unsafe.allocateUninitializedArray0(Class, int)
_copyMemory               jdk.internal.misc.Unsafe.copyMemory0(Object, long, Object, long, long)
_park                     jdk.internal.misc.Unsafe.park(boolean, long)
_unpark                   jdk.internal.misc.Unsafe.unpark(Object)
_loadFence                jdk.internal.misc.Unsafe.loadFence()
_storeFence                jdk.internal.misc.Unsafe.storeFence()
_fullFence                 jdk.internal.misc.Unsafe.fullFence()
_getObject                 jdk.internal.misc.Unsafe.getObject(Object, long)
_getBoolean                jdk.internal.misc.Unsafe.getBoolean(Object, long)
_getByte                   jdk.internal.misc.Unsafe.getByte(Object, long)
_getShort                  jdk.internal.misc.Unsafe.getShort(Object, long)
_getChar                   jdk.internal.misc.Unsafe.getChar(Object, long)
_getInt                    jdk.internal.misc.Unsafe.getInt(Object, long)
_getLong                   jdk.internal.misc.Unsafe.getLong(Object, long)
_getFloat                  jdk.internal.misc.Unsafe.getFloat(Object, long)
_getDouble                 jdk.internal.misc.Unsafe.getDouble(Object, long)
_putObject                 jdk.internal.misc.Unsafe.putObject(Object, long, Object)
_putBoolean                jdk.internal.misc.Unsafe.putBoolean(Object, long, boolean)
_putByte                   jdk.internal.misc.Unsafe.putByte(Object, long, byte)
_putShort                  jdk.internal.misc.Unsafe.putShort(Object, long, short)
_putChar                   jdk.internal.misc.Unsafe.putChar(Object, long, char)
_putInt                    jdk.internal.misc.Unsafe.putInt(Object, long, int)
_putLong                   jdk.internal.misc.Unsafe.putLong(Object, long, long)
_putFloat                  jdk.internal.misc.Unsafe.putFloat(Object, long, float)
_putDouble                 jdk.internal.misc.Unsafe.putDouble(Object, long, double)
_getObjectVolatile         jdk.internal.misc.Unsafe.getObjectVolatile(Object, long)
_getBooleanVolatile        jdk.internal.misc.Unsafe.getBooleanVolatile(Object, long)
_getByteVolatile           jdk.internal.misc.Unsafe.getByteVolatile(Object, long)
_getShortVolatile          jdk.internal.misc.Unsafe.getShortVolatile(Object, long)
_getCharVolatile           jdk.internal.misc.Unsafe.getCharVolatile(Object, long)
_getIntVolatile            jdk.internal.misc.Unsafe.getIntVolatile(Object, long)
_getLongVolatile           jdk.internal.misc.Unsafe.getLongVolatile(Object, long)
_getFloatVolatile          jdk.internal.misc.Unsafe.getFloatVolatile(Object, long)
_getDoubleVolatile         jdk.internal.misc.Unsafe.getDoubleVolatile(Object, long)
_putObjectVolatile         jdk.internal.misc.Unsafe.putObjectVolatile(Object, long, Object)
_putBooleanVolatile        jdk.internal.misc.Unsafe.putBooleanVolatile(Object, long, boolean)
_putByteVolatile           jdk.internal.misc.Unsafe.putByteVolatile(Object, long, byte)
_putShortVolatile          jdk.internal.misc.Unsafe.putShortVolatile(Object, long, short)
_putCharVolatile           jdk.internal.misc.Unsafe.putCharVolatile(Object, long, char)
_putIntVolatile            jdk.internal.misc.Unsafe.putIntVolatile(Object, long, int)
_putLongVolatile           jdk.internal.misc.Unsafe.putLongVolatile(Object, long, long)
_putFloatVolatile          jdk.internal.misc.Unsafe.putFloatVolatile(Object, long, float)
_putDoubleVolatile         jdk.internal.misc.Unsafe.putDoubleVolatile(Object, long, double)
_getObjectOpaque          jdk.internal.misc.Unsafe.getObjectOpaque(Object, long)
_getBooleanOpaque         jdk.internal.misc.Unsafe.getBooleanOpaque(Object, long)
_getByteOpaque            jdk.internal.misc.Unsafe.getByteOpaque(Object, long)
_getShortOpaque           jdk.internal.misc.Unsafe.getShortOpaque(Object, long)
_getCharOpaque            jdk.internal.misc.Unsafe.getCharOpaque(Object, long)
_getIntOpaque             jdk.internal.misc.Unsafe.getIntOpaque(Object, long)
_getLongOpaque            jdk.internal.misc.Unsafe.getLongOpaque(Object, long)
_getFloatOpaque           jdk.internal.misc.Unsafe.getFloatOpaque(Object, long)
_getDoubleOpaque          jdk.internal.misc.Unsafe.getDoubleOpaque(Object, long)
_putObjectOpaque          jdk.internal.misc.Unsafe.putObjectOpaque(Object, long, Object)
_putBooleanOpaque         jdk.internal.misc.Unsafe.putBooleanOpaque(Object, long, boolean)
_putByteOpaque            jdk.internal.misc.Unsafe.putByteOpaque(Object, long, byte)
_putShortOpaque           jdk.internal.misc.Unsafe.putShortOpaque(Object, long, short)
_putCharOpaque            jdk.internal.misc.Unsafe.putCharOpaque(Object, long, char)
_putIntOpaque             jdk.internal.misc.Unsafe.putIntOpaque(Object, long, int)
_putLongOpaque            jdk.internal.misc.Unsafe.putLongOpaque(Object, long, long)
_putFloatOpaque           jdk.internal.misc.Unsafe.putFloatOpaque(Object, long, float)
_putDoubleOpaque          jdk.internal.misc.Unsafe.putDoubleOpaque(Object, long, double)
_getObjectAcquire        jdk.internal.misc.Unsafe.getObjectAcquire(Object, long)
_getBooleanAcquire       jdk.internal.misc.Unsafe.getBooleanAcquire(Object, long)
_getByteAcquire          jdk.internal.misc.Unsafe.getByteAcquire(Object, long)
_getShortAcquire         jdk.internal.misc.Unsafe.getShortAcquire(Object, long)
_getCharAcquire          jdk.internal.misc.Unsafe.getCharAcquire(Object, long)
_getIntAcquire           jdk.internal.misc.Unsafe.getIntAcquire(Object, long)
_getLongAcquire          jdk.internal.misc.Unsafe.getLongAcquire(Object, long)
_getFloatAcquire         jdk.internal.misc.Unsafe.getFloatAcquire(Object, long)
_getDoubleAcquire        jdk.internal.misc.Unsafe.getDoubleAcquire(Object, long)
_putObjectAcquire        jdk.internal.misc.Unsafe.putObjectAcquire(Object, long, Object)
_putBooleanAcquire       jdk.internal.misc.Unsafe.putBooleanAcquire(Object, long, boolean)
_putByteAcquire          jdk.internal.misc.Unsafe.putByteAcquire(Object, long, byte)
_putShortAcquire         jdk.internal.misc.Unsafe.putShortAcquire(Object, long, short)
_putCharAcquire          jdk.internal.misc.Unsafe.putCharAcquire(Object, long, char)
_putIntAcquire           jdk.internal.misc.Unsafe.putIntAcquire(Object, long, int)
_putLongAcquire          jdk.internal.misc.Unsafe.putLongAcquire(Object, long, long)
_putFloatAcquire         jdk.internal.misc.Unsafe.putFloatAcquire(Object, long, float)
_putDoubleAcquire        jdk.internal.misc.Unsafe.putDoubleAcquire(Object, long, double)
_getShortUnaligned         jdk.internal.misc.Unsafe.getShortUnaligned(Object, long)
_getCharUnaligned          jdk.internal.misc.Unsafe.getCharUnaligned(Object, long)
_getIntUnaligned           jdk.internal.misc.Unsafe.getIntUnaligned(Object, long)
_getLongUnaligned          jdk.internal.misc.Unsafe.getLongUnaligned(Object, long)
_putShortUnaligned         jdk.internal.misc.Unsafe.putShortUnaligned(Object, long, short)
_putCharUnaligned          jdk.internal.misc.Unsafe.putCharUnaligned(Object, long, char)
_putIntUnaligned           jdk.internal.misc.Unsafe.putIntUnaligned(Object, long, int)
_putLongUnaligned          jdk.internal.misc.Unsafe.putLongUnaligned(Object, long, long)
_compareAndSetObject              jdk.internal.misc.Unsafe.compareAndSetObject(Object, long, Object, Object)
_compareAndExchangeObject         jdk.internal.misc.Unsafe.compareAndExchangeObject(Object, long, Object, Object)
_compareAndExchangeObjectAcquire  jdk.internal.misc.Unsafe.compareAndExchangeObjectAcquire(Object, long, Object, Object)
_compareAndExchangeObjectRelease  jdk.internal.misc.Unsafe.compareAndExchangeObjectRelease(Object, long, Object, Object)
_compareAndSetLong                jdk.internal.misc.Unsafe.compareAndSetLong(Object, long, long, long)
_compareAndExchangeLong           jdk.internal.misc.Unsafe.compareAndExchangeLong(Object, long, long, long)
_compareAndExchangeLongAcquire    jdk.internal.misc.Unsafe.compareAndExchangeLongAcquire(Object, long, long, long)
_compareAndExchangeLongRelease    jdk.internal.misc.Unsafe.compareAndExchangeLongRelease(Object, long, long, long)
_compareAndSetInt                 jdk.internal.misc.Unsafe.compareAndSetInt(Object, long, int, int)
_compareAndExchangeInt            jdk.internal.misc.Unsafe.compareAndExchangeInt(Object, long, int, int)
_compareAndExchangeIntAcquire     jdk.internal.misc.Unsafe.compareAndExchangeIntAcquire(Object, long, int, int)
_compareAndExchangeIntRelease     jdk.internal.misc.Unsafe.compareAndExchangeIntRelease(Object, long, int, int)
_compareAndSetByte                jdk.internal.misc.Unsafe.compareAndSetByte(Object, long, byte, byte)
_compareAndExchangeByte           jdk.internal.misc.Unsafe.compareAndExchangeByte(Object, long, byte, byte)
_compareAndExchangeByteAcquire    jdk.internal.misc.Unsafe.compareAndExchangeByteAcquire(Object, long, byte, byte)
_compareAndExchangeByteRelease    jdk.internal.misc.Unsafe.compareAndExchangeByteRelease(Object, long, byte, byte)
_compareAndSetShort               jdk.internal.misc.Unsafe.compareAndSetShort(Object, long, short, short)
_compareAndExchangeShort          jdk.internal.misc.Unsafe.compareAndExchangeShort(Object, long, short, short)
_compareAndExchangeShortAcquire   jdk.internal.misc.Unsafe.compareAndExchangeShortAcquire(Object, long, short, short)
_compareAndExchangeShortRelease   jdk.internal.misc.Unsafe.compareAndExchangeShortRelease(Object, long, short, short)
_weakCompareAndSetObjectPlain     jdk.internal.misc.Unsafe.weakCompareAndSetObjectPlain(Object, long, Object, Object)
_weakCompareAndSetObjectAcquire   jdk.internal.misc.Unsafe.weakCompareAndSetObjectAcquire(Object, long, Object, Object)
_weakCompareAndSetObjectRelease   jdk.internal.misc.Unsafe.weakCompareAndSetObjectRelease(Object, long, Object, Object)
_weakCompareAndSetObject          jdk.internal.misc.Unsafe.weakCompareAndSetObject(Object, long, Object, Object)
_weakCompareAndSetLongPlain       jdk.internal.misc.Unsafe.weakCompareAndSetLongPlain(Object, long, long, long)
_weakCompareAndSetLongAcquire     jdk.internal.misc.Unsafe.weakCompareAndSetLongAcquire(Object, long, long, long)
_weakCompareAndSetLongRelease     jdk.internal.misc.Unsafe.weakCompareAndSetLongRelease(Object, long, long, long)
_weakCompareAndSetLong            jdk.internal.misc.Unsafe.weakCompareAndSetLong(Object, long, long, long)
_weakCompareAndSetIntPlain        jdk.internal.misc.Unsafe.weakCompareAndSetIntPlain(Object, long, int, int)
_weakCompareAndSetIntAcquire      jdk.internal.misc.Unsafe.weakCompareAndSetIntAcquire(Object, long, int, int)
_weakCompareAndSetIntRelease      jdk.internal.misc.Unsafe.weakCompareAndSetIntRelease(Object, long, int, int)
_weakCompareAndSetInt             jdk.internal.misc.Unsafe.weakCompareAndSetInt(Object, long, int, int)
_weakCompareAndSetBytePlain       jdk.internal.misc.Unsafe.weakCompareAndSetBytePlain(Object, long, byte, byte)
_weakCompareAndSetByteAcquire     jdk.internal.misc.Unsafe.weakCompareAndSetByteAcquire(Object, long, byte, byte)
_weakCompareAndSetByteRelease     jdk.internal.misc.Unsafe.weakCompareAndSetByteRelease(Object, long, byte, byte)
_weakCompareAndSetByte            jdk.internal.misc.Unsafe.weakCompareAndSetByte(Object, long, byte, byte)
_weakCompareAndSetShortPlain      jdk.internal.misc.Unsafe.weakCompareAndSetShortPlain(Object, long, short, short)
_weakCompareAndSetShortAcquire    jdk.internal.misc.Unsafe.weakCompareAndSetShortAcquire(Object, long, short, short)
_weakCompareAndSetShortRelease    jdk.internal.misc.Unsafe.weakCompareAndSetShortRelease(Object, long, short, short)
_weakCompareAndSetShort           jdk.internal.misc.Unsafe.weakCompareAndSetShort(Object, long, short, short)
_getAndAddInt             jdk.internal.misc.Unsafe.getAndAddInt(Object, long, int)
_getAndAddLong            jdk.internal.misc.Unsafe.getAndAddLong(Object, long, long)
_getAndAddByte            jdk.internal.misc.Unsafe.getAndAddByte(Object, long, byte)
_getAndAddShort           jdk.internal.misc.Unsafe.getAndAddShort(Object, long, short)
_getAndSetInt             jdk.internal.misc.Unsafe.getAndSetInt(Object, long, int)
_getAndSetLong            jdk.internal.misc.Unsafe.getAndSetLong(Object, long, int)
_getAndSetByte            jdk.internal.misc.Unsafe.getAndSetByte(Object, long, byte)
_getAndSetShort           jdk.internal.misc.Unsafe.getAndSetShort(Object, long, short)
_getAndSetObject          jdk.internal.misc.Unsafe.getAndSetObject(Object, long, Object)

java.lang.StringBuilder

_StringBuilder_void          java.lang.StringBuilder()
_StringBuilder_int           java.lang.StringBuilder(int)
_StringBuilder_String        java.lang.StringBuilder(String)
_StringBuilder_append_char   java.lang.StringBuilder.append(char)
_StringBuilder_append_int    java.lang.StringBuilder.append(int)
_StringBuilder_append_String java.lang.StringBuilder.append(String)
_StringBuilder_toString        java.lang.StringBuilder.toString()

java.lang.StringBuffer

_StringBuffer_void          java.lang.StringBuffer()
_StringBuffer_int           java.lang.StringBuffer(int)
_StringBuffer_String        java.lang.StringBuffer(String)
_StringBuffer_append_char   java.lang.StringBuffer.append(char)
_StringBuffer_append_int    java.lang.StringBuffer.append(int)
_StringBuffer_append_String java.lang.StringBuffer.append(String)
_StringBuffer_toString         java.lang.StringBuffer.toString()

java.lang.invoke.MethodHandle

_invokeGeneric            java.lang.invoke.MethodHandle.invoke*
_invokeBasic              java.lang.invoke.MethodHandle.invokeBasic*
_linkToVirtual            java.lang.invoke.MethodHandle.linkToVirtual*
_linkToStatic             java.lang.invoke.MethodHandle.linkToStatic*
_linkToSpecial            java.lang.invoke.MethodHandle.linkToSpecial*
_linkToInterface          java.lang.invoke.MethodHandle.linkToInterface*
_compiledLambdaForm       java.lang.invoke.MethodHandle.*
_profileBoolean    java.lang.invoke.MethodHandleImpl.profileBoolean(boolean, int[])
_isCompileConstant java.lang.invoke.MethodHandleImpl.isCompileConstant(Object)

Boxing and Unboxing

_booleanValue             java.lang.Boolean.booleanValue()
_byteValue                java.lang.Byte.byteValue()
_charValue                java.lang.Character.charValue()
_shortValue               java.lang.Short.shortValue()
_intValue                 java.lang.Integer.intValue()
_longValue                java.lang.Long.longValue()
_floatValue               java.lang.Float.floatValue()
_doubleValue              java.lang.Double.doubleValue()
_Boolean_valueOf          java.lang.Boolean.valueOf(boolean)
_Byte_valueOf             java.lang.Byte.valueOf(byte)
_Character_valueOf        java.lang.Character.valueOf(char)
_Short_valueOf            java.lang.Short.valueOf(short)
_Integer_valueOf          java.lang.Integer.valueOf(int)
_Long_valueOf             java.lang.Long.valueOf(long)
_Float_valueOf            java.lang.Float.valueOf(float)
_Double_valueOf           java.lang.Double.valueOf(double)

java.util.stream.StreamsRangeIntSpliterator

_forEachRemaining java_util_stream_StreamsRangeIntSpliterator.forEachRemaining(java.util.function.IntConsumer)

Benefits of Intrinsic Functions

Интринсик предпочтительнее Java-кода в плане производительности по двум основным причинам: во-первых, нет необходимости в дополнительных проверках (проверки на null, границы массивов и прочее), которые приводят к различным RuntimeException, во-вторых, в intrinsic-функции могут быть реализованы platform-specific оптимизации.

По сравнению с JNI-вызовами отсутствуют накладные расходы, связанные с копированием данных (в native и обратно) и дополнительной прослойкой для контроля за Java-объектами, используемыми в native-коде.

Контроль

Чтобы посмотреть, какие интринсики были подставлены, можно воспользоваться опцией -XX:+PrintIntrinsics:

-XX:+UnlockDiagnosticVMOptions
-XX:+PrintIntrinsics

To make sure that intrification is possible (using intrinsic functions ) only in JIT compilation mode, you can run it together with the option -Xint(JVM runs only in interpreter mode).

To disable the use of a specific intrinsic function , you can use the option -XX:DisableIntrinsic:

-XX:+UnlockDiagnosticVMOptions
-XX:DisableIntrinsic=<название интринсика>[,<название интринсика>]

Notes

Important note from apangin :

It should be noted that not all of these methods are intrinsics in the literal sense, that is, it is not at all necessary that JIT substitutes a special code for the call. Some are compiled as regular Java methods, and their mention in vmSymbols.hppdue to the need to distinguish them in runtime for another reason.

For example, it is Method.invokemarked in order not to take it into account in security check when traversing the stack. Availability Throwable.fillInStackTraceserves as a hint for Escape Analysys, Unsafe.park/unparkand is completely in vain marked.

At the same time, with JDK 9, the method is Throwable.fillInStackTracegenerally removed from the list of intrinsics .

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