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package org.graalvm.compiler.nodes.spi;

import org.graalvm.compiler.core.common.spi.ConstantFieldProvider;
import org.graalvm.compiler.graph.NodeSourcePosition;
import org.graalvm.compiler.nodes.FixedNode;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.LogicNode;
import org.graalvm.compiler.nodes.extended.AnchoringNode;
import org.graalvm.compiler.nodes.extended.GuardingNode;

import jdk.vm.ci.meta.ConstantReflectionProvider;
import jdk.vm.ci.meta.DeoptimizationAction;
import jdk.vm.ci.meta.DeoptimizationReason;
import jdk.vm.ci.meta.MetaAccessProvider;
import jdk.vm.ci.meta.SpeculationLog.Speculation;

public interface LoweringTool {

    CoreProviders getProviders();

    MetaAccessProvider getMetaAccess();

    LoweringProvider getLowerer();

    ConstantReflectionProvider getConstantReflection();

    ConstantFieldProvider getConstantFieldProvider();

    Replacements getReplacements();

    StampProvider getStampProvider();

    GuardingNode createGuard(FixedNode before, LogicNode condition, DeoptimizationReason deoptReason, DeoptimizationAction action);

    GuardingNode createGuard(FixedNode before, LogicNode condition, DeoptimizationReason deoptReason, DeoptimizationAction action, Speculation speculation, boolean negated,
                    NodeSourcePosition noDeoptSuccessorPosition);

    
Gets the closest fixed node preceding the node currently being lowered.
/** * Gets the closest fixed node preceding the node currently being lowered. */
FixedWithNextNode lastFixedNode(); AnchoringNode getCurrentGuardAnchor();
Marker interface lowering stages.
/** * Marker interface lowering stages. */
interface LoweringStage { }
The lowering stages used in a standard Graal phase plan. Lowering is called 3 times, during every tier of compilation.
/** * The lowering stages used in a standard Graal phase plan. Lowering is called 3 times, during * every tier of compilation. */
enum StandardLoweringStage implements LoweringStage { HIGH_TIER, MID_TIER, LOW_TIER }
Returns current lowering stage.
/** * Returns current lowering stage. */
LoweringStage getLoweringStage(); }