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.trace.lsra;
  24 
  25 import org.graalvm.compiler.core.common.alloc.Trace;
  26 import org.graalvm.compiler.debug.Debug;
  27 import org.graalvm.compiler.debug.Indent;
  28 import org.graalvm.compiler.lir.alloc.trace.lsra.TraceLinearScanPhase.TraceLinearScan;
  29 import org.graalvm.compiler.lir.gen.LIRGenerationResult;
  30 
  31 import jdk.vm.ci.code.TargetDescription;
  32 
  33 final class TraceLinearScanRegisterAllocationPhase extends TraceLinearScanAllocationPhase {
  34 
  35     @Override
  36     protected void run(TargetDescription target, LIRGenerationResult lirGenRes, Trace trace, TraceLinearScanAllocationContext context) {
  37         TraceLinearScan allocator = context.allocator;
  38         allocateRegisters(allocator);
  39     }
  40 
  41     @SuppressWarnings("try")
  42     private static void allocateRegisters(TraceLinearScan allocator) {
  43         try (Indent indent = Debug.logAndIndent("allocate registers")) {
  44             FixedInterval precoloredIntervals = allocator.createFixedUnhandledList();
  45             TraceInterval notPrecoloredIntervals = allocator.createUnhandledListByFrom(TraceLinearScanPhase.IS_VARIABLE_INTERVAL);
  46 
  47             // allocate cpu registers
  48             TraceLinearScanWalker lsw = new TraceLinearScanWalker(allocator, precoloredIntervals, notPrecoloredIntervals);
  49             lsw.walk();
  50             lsw.finishAllocation();
  51         }
  52     }
  53 
  54 }