1 /*
   2  * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright 2012, 2015 SAP AG. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #include "precompiled.hpp"
  27 #include "opto/compile.hpp"
  28 #include "opto/node.hpp"
  29 #include "runtime/globals.hpp"
  30 #include "utilities/debug.hpp"
  31 
  32 // processor dependent initialization for ppc
  33 
  34 void Compile::pd_compiler2_init() {
  35 
  36   // Power7 and later
  37   if (PowerArchitecturePPC64 > 6) {
  38     if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
  39       FLAG_SET_ERGO(bool, UsePopCountInstruction, true);
  40     }
  41   }
  42 
  43   if (PowerArchitecturePPC64 == 6) {
  44     if (FLAG_IS_DEFAULT(InsertEndGroupPPC64)) {
  45       FLAG_SET_ERGO(bool, InsertEndGroupPPC64, true);
  46     }
  47   }
  48 
  49   if (!VM_Version::has_isel() && FLAG_IS_DEFAULT(ConditionalMoveLimit)) {
  50     FLAG_SET_ERGO(intx, ConditionalMoveLimit, 0);
  51   }
  52 
  53   if (OptimizeFill) {
  54     warning("OptimizeFill is not supported on this CPU.");
  55     FLAG_SET_DEFAULT(OptimizeFill, false);
  56   }
  57 
  58 }