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  */
  24 
  25 #include "incls/_precompiled.incl"
  26 #include "incls/_ifg.cpp.incl"












  27 
  28 #define EXACT_PRESSURE 1
  29 
  30 //=============================================================================
  31 //------------------------------IFG--------------------------------------------
  32 PhaseIFG::PhaseIFG( Arena *arena ) : Phase(Interference_Graph), _arena(arena) {
  33 }
  34 
  35 //------------------------------init-------------------------------------------
  36 void PhaseIFG::init( uint maxlrg ) {
  37   _maxlrg = maxlrg;
  38   _yanked = new (_arena) VectorSet(_arena);
  39   _is_square = false;
  40   // Make uninitialized adjacency lists
  41   _adjs = (IndexSet*)_arena->Amalloc(sizeof(IndexSet)*maxlrg);
  42   // Also make empty live range structures
  43   _lrgs = (LRG *)_arena->Amalloc( maxlrg * sizeof(LRG) );
  44   memset(_lrgs,0,sizeof(LRG)*maxlrg);
  45   // Init all to empty
  46   for( uint i = 0; i < maxlrg; i++ ) {

   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  */
  24 
  25 #include "precompiled.hpp"
  26 #include "compiler/oopMap.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "opto/addnode.hpp"
  29 #include "opto/block.hpp"
  30 #include "opto/callnode.hpp"
  31 #include "opto/cfgnode.hpp"
  32 #include "opto/chaitin.hpp"
  33 #include "opto/coalesce.hpp"
  34 #include "opto/connode.hpp"
  35 #include "opto/indexSet.hpp"
  36 #include "opto/machnode.hpp"
  37 #include "opto/memnode.hpp"
  38 #include "opto/opcodes.hpp"
  39 
  40 #define EXACT_PRESSURE 1
  41 
  42 //=============================================================================
  43 //------------------------------IFG--------------------------------------------
  44 PhaseIFG::PhaseIFG( Arena *arena ) : Phase(Interference_Graph), _arena(arena) {
  45 }
  46 
  47 //------------------------------init-------------------------------------------
  48 void PhaseIFG::init( uint maxlrg ) {
  49   _maxlrg = maxlrg;
  50   _yanked = new (_arena) VectorSet(_arena);
  51   _is_square = false;
  52   // Make uninitialized adjacency lists
  53   _adjs = (IndexSet*)_arena->Amalloc(sizeof(IndexSet)*maxlrg);
  54   // Also make empty live range structures
  55   _lrgs = (LRG *)_arena->Amalloc( maxlrg * sizeof(LRG) );
  56   memset(_lrgs,0,sizeof(LRG)*maxlrg);
  57   // Init all to empty
  58   for( uint i = 0; i < maxlrg; i++ ) {