src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.sparc/src/org/graalvm/compiler/lir/sparc/SPARCLIRInstruction.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.lir.sparc;

import org.graalvm.compiler.core.common.NumUtil;
import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
import org.graalvm.compiler.lir.LIRInstruction;
import org.graalvm.compiler.lir.LIRInstructionClass;
import org.graalvm.compiler.lir.asm.CompilationResultBuilder;

import jdk.vm.ci.meta.JavaConstant;

/**
 * Convenience class to provide SPARCMacroAssembler for the {@link #emitCode} method.
 */
public abstract class SPARCLIRInstruction extends LIRInstruction implements SPARCLIRInstructionMixin {
    public static final LIRInstructionClass<SPARCLIRInstruction> TYPE = LIRInstructionClass.create(SPARCLIRInstruction.class);
    private final SPARCLIRInstructionMixinStore store;

    protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c) {
        this(c, null);
    }

    protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c, SizeEstimate size) {
        super(c);
        store = new SPARCLIRInstructionMixinStore(size);
    }

    @Override
    public void emitCode(CompilationResultBuilder crb) {
        emitCode(crb, (SPARCMacroAssembler) crb.asm);
    }

    protected abstract void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm);

    @Override
    public SPARCLIRInstructionMixinStore getSPARCLIRInstructionStore() {
        return store;
    }

    protected static int asImmediate(JavaConstant value) {
        if (value.isNull()) {
            return 0;
        } else {
            long val = value.asLong();
            assert NumUtil.isInt(val);
            return (int) val;
        }
    }
}