org.graalvm.compiler.nodes.loop

Enum DefaultLoopPolicies.FullUnrollability

java.lang.Object

java.lang.Enum<DefaultLoopPolicies.FullUnrollability>

org.graalvm.compiler.nodes.loop.DefaultLoopPolicies.FullUnrollability

All Implemented Interfaces:

Serializable, Comparable<DefaultLoopPolicies.FullUnrollability>

Enclosing class:

DefaultLoopPolicies

public static enum DefaultLoopPolicies.FullUnrollability
extends Enum<DefaultLoopPolicies.FullUnrollability>

This enum represents the result of analyzing a loop for full unrolling. It is used by DefaultLoopPolicies.canFullUnroll(org.graalvm.compiler.nodes.loop.LoopEx) to communicate to its caller whether a loop should be fully unrolled, and if not, why not.

Enum Constant Summary

Enum Constants

Enum Constant and Description
MUST_NOT_DUPLICATE We cannot fully unroll this loop because we cannot duplicate it.
NOT_COUNTED We cannot fully unroll this loop because it is not a counted loop with a constant max trip count, or the counter might overflow.
SHOULD_FULL_UNROLL We can and should fully unroll this loop.
TOO_LARGE We could fully unroll this loop, but we should not because this would exceed a global or per-loop size limit.
TOO_MANY_ITERATIONS We could fully unroll this loop, but we should not because it has more iterations than allowed by the full unrolling options.

Method Summary

Modifier and Type	Method and Description
static DefaultLoopPolicies.FullUnrollability	valueOf(String name) Returns the enum constant of this type with the specified name.
static DefaultLoopPolicies.FullUnrollability[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SHOULD_FULL_UNROLL

public static final DefaultLoopPolicies.FullUnrollability SHOULD_FULL_UNROLL

We can and should fully unroll this loop.

NOT_COUNTED

public static final DefaultLoopPolicies.FullUnrollability NOT_COUNTED

We cannot fully unroll this loop because it is not a counted loop with a constant max trip count, or the counter might overflow.

MUST_NOT_DUPLICATE

public static final DefaultLoopPolicies.FullUnrollability MUST_NOT_DUPLICATE

We cannot fully unroll this loop because we cannot duplicate it.

TOO_MANY_ITERATIONS

public static final DefaultLoopPolicies.FullUnrollability TOO_MANY_ITERATIONS

We could fully unroll this loop, but we should not because it has more iterations than allowed by the full unrolling options.

TOO_LARGE

public static final DefaultLoopPolicies.FullUnrollability TOO_LARGE

We could fully unroll this loop, but we should not because this would exceed a global or per-loop size limit.

Method Detail

values

public static DefaultLoopPolicies.FullUnrollability[] values()

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DefaultLoopPolicies.FullUnrollability valueOf(String name)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null