com.oracle.graal.hotspot.replacements.arraycopy

Class UnsafeArrayCopySnippets

java.lang.Object

com.oracle.graal.hotspot.replacements.arraycopy.UnsafeArrayCopySnippets

All Implemented Interfaces:

Snippets

public class UnsafeArrayCopySnippets
extends Object
implements Snippets

As opposed to ArrayCopySnippets, these Snippets do not perform store checks.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UnsafeArrayCopySnippets.Templates

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	supportsUnalignedMemoryAccess
private static Kind	VECTOR_KIND
private static long	VECTOR_SIZE

Constructor Summary

Constructors

Constructor and Description
UnsafeArrayCopySnippets()

Method Summary

Modifier and Type	Method and Description
static void	arraycopyBoolean(boolean[] src, int srcPos, boolean[] dest, int destPos, int length)
static void	arraycopyByte(byte[] src, int srcPos, byte[] dest, int destPos, int length)
static void	arraycopyChar(char[] src, int srcPos, char[] dest, int destPos, int length)
static void	arraycopyDouble(double[] src, int srcPos, double[] dest, int destPos, int length)
static void	arraycopyFloat(float[] src, int srcPos, float[] dest, int destPos, int length)
static void	arraycopyInt(int[] src, int srcPos, int[] dest, int destPos, int length)
static void	arraycopyLong(long[] src, int srcPos, long[] dest, int destPos, int length)
static void	arraycopyObject(Object[] src, int srcPos, Object[] dest, int destPos, int length) For this kind, Object, we want to avoid write barriers between writes, but instead have them at the end of the snippet.
static void	arraycopyPrimitive(Object src, int srcPos, Object dest, int destPos, int length, int layoutHelper)
static void	arraycopyShort(short[] src, int srcPos, short[] dest, int destPos, int length)
private static LocationIdentity	getArrayLocation(Kind kind)
private static void	vectorizedCopy(Object src, int srcPos, Object dest, int destPos, int length, Kind baseKind, LocationIdentity locationIdentity)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

supportsUnalignedMemoryAccess

private static final boolean supportsUnalignedMemoryAccess

VECTOR_KIND

private static final Kind VECTOR_KIND

VECTOR_SIZE

private static final long VECTOR_SIZE

Constructor Detail

UnsafeArrayCopySnippets

public UnsafeArrayCopySnippets()

Method Detail

vectorizedCopy

private static void vectorizedCopy(Object src,
                                   int srcPos,
                                   Object dest,
                                   int destPos,
                                   int length,
                                   Kind baseKind,
                                   LocationIdentity locationIdentity)

getArrayLocation

private static LocationIdentity getArrayLocation(Kind kind)

arraycopyByte

public static void arraycopyByte(byte[] src,
                                 int srcPos,
                                 byte[] dest,
                                 int destPos,
                                 int length)

arraycopyBoolean

public static void arraycopyBoolean(boolean[] src,
                                    int srcPos,
                                    boolean[] dest,
                                    int destPos,
                                    int length)

arraycopyChar

public static void arraycopyChar(char[] src,
                                 int srcPos,
                                 char[] dest,
                                 int destPos,
                                 int length)

arraycopyShort

public static void arraycopyShort(short[] src,
                                  int srcPos,
                                  short[] dest,
                                  int destPos,
                                  int length)

arraycopyInt

public static void arraycopyInt(int[] src,
                                int srcPos,
                                int[] dest,
                                int destPos,
                                int length)

arraycopyFloat

public static void arraycopyFloat(float[] src,
                                  int srcPos,
                                  float[] dest,
                                  int destPos,
                                  int length)

arraycopyLong

public static void arraycopyLong(long[] src,
                                 int srcPos,
                                 long[] dest,
                                 int destPos,
                                 int length)

arraycopyDouble

public static void arraycopyDouble(double[] src,
                                   int srcPos,
                                   double[] dest,
                                   int destPos,
                                   int length)

arraycopyObject

public static void arraycopyObject(Object[] src,
                                   int srcPos,
                                   Object[] dest,
                                   int destPos,
                                   int length)

For this kind, Object, we want to avoid write barriers between writes, but instead have them at the end of the snippet. This is done by using DirectObjectStoreNode, and rely on WriteBarrierAdditionPhase to put write barriers after the UnsafeArrayCopyNode with kind Object.

arraycopyPrimitive

public static void arraycopyPrimitive(Object src,
                                      int srcPos,
                                      Object dest,
                                      int destPos,
                                      int length,
                                      int layoutHelper)