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package org.graalvm.compiler.lir.sparc;

import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
import org.graalvm.compiler.lir.LIRInstruction;

Implementors of this interface are able to place its last instruction into the delay slot of a SPARCDelayedControlTransfer instruction. The implementor has to do following steps to emit code into the delay slot for the DelayedControlTransfer instruction:
  1. Emit everything up to the second last instruction.
  2. Call SPARCDelayedControlTransfer.emitControlTransfer(CompilationResultBuilder, SPARCMacroAssembler) to let the DelayedControlTransfer instruction emit its own code (But must not stuff the delay slot with Nop)
  3. emit the last instruction for this LIRInstruction
Note: If this instruction decides not to use the delay slot, it can skip the call of SPARCDelayedControlTransfer.emitControlTransfer(CompilationResultBuilder, SPARCMacroAssembler) . The DelayedControlTransfer instruction will emit the code just with Nop in the delay slot.
/** * Implementors of this interface are able to place its last instruction into the delay slot of a * {@link SPARCDelayedControlTransfer} instruction. * * The implementor has to do following steps to emit code into the delay slot for the * DelayedControlTransfer instruction: * <ol> * <li>Emit everything up to the second last instruction.</li> * <li>Call * {@link SPARCDelayedControlTransfer#emitControlTransfer(org.graalvm.compiler.lir.asm.CompilationResultBuilder, SPARCMacroAssembler)} * to let the DelayedControlTransfer instruction emit its own code (But must not stuff the delay * slot with Nop)</li> * <li>emit the last instruction for this {@link LIRInstruction}</li> * </ol> * * Note: If this instruction decides not to use the delay slot, it can skip the call of * {@link SPARCDelayedControlTransfer#emitControlTransfer(org.graalvm.compiler.lir.asm.CompilationResultBuilder, SPARCMacroAssembler)} * . The DelayedControlTransfer instruction will emit the code just with Nop in the delay slot. */
public interface SPARCTailDelayedLIRInstruction extends SPARCLIRInstructionMixin { default void setDelayedControlTransfer(SPARCDelayedControlTransfer holder) { getSPARCLIRInstructionStore().delayedControlTransfer = holder; } default SPARCDelayedControlTransfer getDelayedControlTransfer() { return getSPARCLIRInstructionStore().delayedControlTransfer; } }