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Datei: c2_init_ppc.cpp Sprache: C

/*
* Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2020 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/

#include "precompiled.hpp"
#include "opto/compile.hpp"
#include "opto/node.hpp"
#include "runtime/globals.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/vm_version.hpp"
#include "utilities/debug.hpp"

// Processor dependent initialization of C2 compiler for ppc.

void Compile::pd_compiler2_init() {

  // Power7 and later.
  if (PowerArchitecturePPC64 > 6) {
    if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
      FLAG_SET_ERGO(UsePopCountInstruction, true);
    }
  }

  if (!VM_Version::has_isel() && FLAG_IS_DEFAULT(ConditionalMoveLimit)) {
    FLAG_SET_ERGO(ConditionalMoveLimit, 0);
  }

  if (OptimizeFill) {
    warning("OptimizeFill is not supported on this CPU.");
    FLAG_SET_DEFAULT(OptimizeFill, false);
  }

}

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