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package org.graalvm.compiler.hotspot;

import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.debug.GraalError;
import org.graalvm.compiler.hotspot.meta.HotSpotConstantLoadAction;
import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
import org.graalvm.compiler.hotspot.nodes.GraalHotSpotVMConfigNode;
import org.graalvm.compiler.hotspot.nodes.aot.LoadConstantIndirectlyNode;
import org.graalvm.compiler.hotspot.nodes.aot.ResolveConstantNode;
import org.graalvm.compiler.hotspot.nodes.aot.ResolveMethodAndLoadCountersNode;
import org.graalvm.compiler.hotspot.nodes.profiling.RandomSeedNode;
import org.graalvm.compiler.hotspot.replacements.EncodedSymbolConstant;
import org.graalvm.compiler.lir.LIRFrameState;
import org.graalvm.compiler.lir.VirtualStackSlot;
import org.graalvm.compiler.lir.gen.LIRGenerator;
import org.graalvm.compiler.lir.gen.LIRGeneratorTool;

import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant;
import jdk.vm.ci.hotspot.HotSpotObjectConstant;
import jdk.vm.ci.meta.Constant;
import jdk.vm.ci.meta.DeoptimizationAction;
import jdk.vm.ci.meta.DeoptimizationReason;
import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.meta.Value;

This interface defines the contract a HotSpot backend LIR generator needs to fulfill in addition to abstract methods from LIRGenerator and LIRGeneratorTool.
/** * This interface defines the contract a HotSpot backend LIR generator needs to fulfill in addition * to abstract methods from {@link LIRGenerator} and {@link LIRGeneratorTool}. */
public interface HotSpotLIRGenerator extends LIRGeneratorTool {
Emits an operation to make a tail call.
Params:
  • args – the arguments of the call
  • address – the target address of the call
/** * Emits an operation to make a tail call. * * @param args the arguments of the call * @param address the target address of the call */
void emitTailcall(Value[] args, Value address);
Emits code that jumps to the deopt blob uncommon_trap entry point with action and reason.
/** * Emits code that jumps to the deopt blob uncommon_trap entry point with {@code action} and * {@code reason}. */
void emitDeoptimizeCaller(DeoptimizationAction action, DeoptimizationReason reason);
Emits code that jumps to the deopt blob unpack_with_exception entry point with exception.
Params:
  • exception –
/** * Emits code that jumps to the deopt blob unpack_with_exception entry point with * {@code exception}. * * @param exception */
void emitDeoptimizeWithExceptionInCaller(Value exception);
Emits code for a LoadConstantIndirectlyNode.
Params:
  • constant –
Returns:value of loaded address in register
/** * Emits code for a {@link LoadConstantIndirectlyNode}. * * @param constant * @return value of loaded address in register */
default Value emitLoadObjectAddress(Constant constant) { throw new GraalError("Emitting code to load an object address is not currently supported on %s", target().arch); }
Emits code for a LoadConstantIndirectlyNode.
Params:
  • constant – original constant
  • action – action to perform on the metaspace object
Returns:Value of loaded address in register
/** * Emits code for a {@link LoadConstantIndirectlyNode}. * * @param constant original constant * @param action action to perform on the metaspace object * @return Value of loaded address in register */
default Value emitLoadMetaspaceAddress(Constant constant, HotSpotConstantLoadAction action) { throw new GraalError("Emitting code to load a metaspace address is not currently supported on %s", target().arch); }
Emits code for a GraalHotSpotVMConfigNode.
Params:
  • markId – id of the value to load
  • kind – type of the value to load
Returns:value of loaded global in register
/** * Emits code for a {@link GraalHotSpotVMConfigNode}. * * @param markId id of the value to load * @param kind type of the value to load * @return value of loaded global in register */
default Value emitLoadConfigValue(HotSpotMarkId markId, LIRKind kind) { throw new GraalError("Emitting code to load a config value is not currently supported on %s", target().arch); }
Emits code for a ResolveConstantNode to resolve a HotSpotObjectConstant.
Params:
  • constant – original constant
  • constantDescription – a description of the string that need to be materialized (and interned) as java.lang.String, generated with EncodedSymbolConstant
  • frameState – frame state for the runtime call
Returns:the address of the requested constant.
/** * Emits code for a {@link ResolveConstantNode} to resolve a {@link HotSpotObjectConstant}. * * @param constant original constant * @param constantDescription a description of the string that need to be materialized (and * interned) as java.lang.String, generated with {@link EncodedSymbolConstant} * @param frameState frame state for the runtime call * @return the address of the requested constant. */
default Value emitObjectConstantRetrieval(Constant constant, Value constantDescription, LIRFrameState frameState) { throw new GraalError("Emitting code to resolve an object constant is not currently supported on %s", target().arch); }
Emits code to resolve a dynamic constant.
Params:
  • constant – original constant
  • frameState – frame state for the runtime call
Returns:the address of the requested constant.
/** * Emits code to resolve a dynamic constant. * * @param constant original constant * @param frameState frame state for the runtime call * @return the address of the requested constant. */
default Value emitResolveDynamicInvoke(Constant constant, LIRFrameState frameState) { throw new GraalError("Emitting code to resolve a dynamic constant is not currently supported on %s", target().arch); }
Emits code for a ResolveConstantNode to resolve a HotSpotMetaspaceConstant.
Params:
Returns:the address of the requested constant.
/** * Emits code for a {@link ResolveConstantNode} to resolve a {@link HotSpotMetaspaceConstant}. * * @param constant original constant * @param constantDescription a symbolic description of the {@link HotSpotMetaspaceConstant} * generated by {@link EncodedSymbolConstant} * @param frameState frame state for the runtime call * @return the address of the requested constant. */
default Value emitMetaspaceConstantRetrieval(Constant constant, Value constantDescription, LIRFrameState frameState) { throw new GraalError("Emitting code to resolve a metaspace constant is not currently supported on %s", target().arch); }
Emits code for a ResolveMethodAndLoadCountersNode to resolve a HotSpotMetaspaceConstant that represents a ResolvedJavaMethod and return the corresponding MethodCounters object.
Params:
  • method – original constant
  • klassHint – a klass in which the method is declared
  • methodDescription – is symbolic description of the constant generated by EncodedSymbolConstant
  • frameState – frame state for the runtime call
Returns:the address of the requested constant.
/** * Emits code for a {@link ResolveMethodAndLoadCountersNode} to resolve a * {@link HotSpotMetaspaceConstant} that represents a {@link ResolvedJavaMethod} and return the * corresponding MethodCounters object. * * @param method original constant * @param klassHint a klass in which the method is declared * @param methodDescription is symbolic description of the constant generated by * {@link EncodedSymbolConstant} * @param frameState frame state for the runtime call * @return the address of the requested constant. */
default Value emitResolveMethodAndLoadCounters(Constant method, Value klassHint, Value methodDescription, LIRFrameState frameState) { throw new GraalError("Emitting code to resolve a method and load counters is not currently supported on %s", target().arch); }
Emits code for a ResolveConstantNode to resolve a klass HotSpotMetaspaceConstant and run static initializer.
Params:
Returns:the address of the requested constant.
/** * Emits code for a {@link ResolveConstantNode} to resolve a klass * {@link HotSpotMetaspaceConstant} and run static initializer. * * * @param constant original constant * @param constantDescription a symbolic description of the {@link HotSpotMetaspaceConstant} * generated by {@link EncodedSymbolConstant} * @param frameState frame state for the runtime call * @return the address of the requested constant. */
default Value emitKlassInitializationAndRetrieval(Constant constant, Value constantDescription, LIRFrameState frameState) { throw new GraalError("Emitting code to initialize a class is not currently supported on %s", target().arch); }
Emits code for a RandomSeedNode.
Returns:value of the counter
/** * Emits code for a {@link RandomSeedNode}. * * @return value of the counter */
default Value emitRandomSeed() { throw new GraalError("Emitting code to return a random seed is not currently supported on %s", target().arch); }
Gets a stack slot for a lock at a given lock nesting depth.
/** * Gets a stack slot for a lock at a given lock nesting depth. */
VirtualStackSlot getLockSlot(int lockDepth); @Override HotSpotProviders getProviders(); }