1 /*
   2  * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.lir.alloc.lsra;
  24 
  25 import org.graalvm.compiler.core.common.alloc.RegisterAllocationConfig;
  26 import org.graalvm.compiler.lir.alloc.lsra.ssa.SSALinearScan;
  27 import org.graalvm.compiler.lir.gen.LIRGenerationResult;
  28 import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory;
  29 import org.graalvm.compiler.lir.phases.AllocationPhase;
  30 
  31 import jdk.vm.ci.code.TargetDescription;
  32 
  33 public final class LinearScanPhase extends AllocationPhase {
  34 
  35     private boolean neverSpillConstants;
  36 
  37     public void setNeverSpillConstants(boolean neverSpillConstants) {
  38         this.neverSpillConstants = neverSpillConstants;
  39     }
  40 
  41     @Override
  42     protected void run(TargetDescription target, LIRGenerationResult lirGenRes, AllocationContext context) {
  43         MoveFactory spillMoveFactory = context.spillMoveFactory;
  44         RegisterAllocationConfig registerAllocationConfig = context.registerAllocationConfig;
  45         final LinearScan allocator = new SSALinearScan(target, lirGenRes, spillMoveFactory, registerAllocationConfig, lirGenRes.getLIR().linearScanOrder(), neverSpillConstants);
  46         allocator.allocate(target, lirGenRes, spillMoveFactory, registerAllocationConfig);
  47     }
  48 }