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 jdk.vm.ci.code;
  24 
  25 import java.util.*;




  26 
  27 /**
  28  * A map from registers to frame slots. This can be used to describe where callee saved registers
  29  * are saved in a callee's frame.
  30  */
  31 public final class RegisterSaveLayout {
  32 
  33     /**
  34      * Keys.
  35      */
  36     private final Register[] registers;
  37 
  38     /**
  39      * Slot indexes relative to stack pointer.
  40      */
  41     private final int[] slots;
  42 
  43     /**
  44      * Creates a map from registers to frame slots.
  45      *

   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 jdk.vm.ci.code;
  24 
  25 import java.util.Arrays;
  26 import java.util.HashMap;
  27 import java.util.HashSet;
  28 import java.util.Map;
  29 import java.util.TreeMap;
  30 
  31 /**
  32  * A map from registers to frame slots. This can be used to describe where callee saved registers
  33  * are saved in a callee's frame.
  34  */
  35 public final class RegisterSaveLayout {
  36 
  37     /**
  38      * Keys.
  39      */
  40     private final Register[] registers;
  41 
  42     /**
  43      * Slot indexes relative to stack pointer.
  44      */
  45     private final int[] slots;
  46 
  47     /**
  48      * Creates a map from registers to frame slots.
  49      *