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 * version 2 for more details (a copy is included in the LICENSE file that
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package org.graalvm.compiler.lir.alloc.trace.lsra;

import org.graalvm.compiler.core.common.alloc.RegisterAllocationConfig;
import org.graalvm.compiler.core.common.alloc.Trace;
import org.graalvm.compiler.core.common.alloc.TraceBuilderResult;
import org.graalvm.compiler.debug.DebugContext;
import org.graalvm.compiler.debug.Indent;
import org.graalvm.compiler.lir.alloc.trace.lsra.TraceLinearScanPhase.TraceLinearScan;
import org.graalvm.compiler.lir.gen.LIRGenerationResult;
import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory;

import jdk.vm.ci.code.TargetDescription;

final class TraceLinearScanRegisterAllocationPhase extends TraceLinearScanAllocationPhase {

    @Override
    protected void run(TargetDescription target, LIRGenerationResult lirGenRes, Trace trace, MoveFactory spillMoveFactory, RegisterAllocationConfig registerAllocationConfig,
                    TraceBuilderResult traceBuilderResult, TraceLinearScan allocator) {
        allocateRegisters(allocator);
    }

    @SuppressWarnings("try")
    private static void allocateRegisters(TraceLinearScan allocator) {
        DebugContext debug = allocator.getDebug();
        try (Indent indent = debug.logAndIndent("allocate registers")) {
            FixedInterval precoloredIntervals = allocator.createFixedUnhandledList();
            TraceInterval notPrecoloredIntervals = allocator.createUnhandledListByFrom(TraceLinearScanPhase.IS_VARIABLE_INTERVAL);

            // allocate cpu registers
            TraceLinearScanWalker lsw = new TraceLinearScanWalker(allocator, precoloredIntervals, notPrecoloredIntervals);
            lsw.walk();
            lsw.finishAllocation();
        }
    }

}
