view src/cpu/x86/vm/interpreterGenerator_x86.hpp @ 15388:769fc3629f59

Add phase FlowSensitiveReductionPhase. It is possible to remove GuardingPiNodes, CheckCastNodes, and FixedGuards during HighTier under certain conditions (control-flow sensitive conditions). The phase added in this commit (FlowSensitiveReductionPhase) does that, and in addition replaces usages with "downcasting" PiNodes when possible thus resulting in more precise object stamps (e.g., non-null). Finally, usages of floating, side-effects free, expressions are also simplified (as per control-flow sensitive conditions). The newly added phase runs only during HighTier and can be deactivated using Graal option FlowSensitiveReduction (it is active by default).
author Miguel Garcia <miguel.m.garcia@oracle.com>
date Fri, 25 Apr 2014 16:50:52 +0200
parents 4062efea018b
children
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/*
 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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
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#ifndef CPU_X86_VM_INTERPRETERGENERATOR_X86_HPP
#define CPU_X86_VM_INTERPRETERGENERATOR_X86_HPP


// Generation of Interpreter
//
  friend class AbstractInterpreterGenerator;

  address generate_deopt_entry_for(TosState state, int step);

 private:

  address generate_normal_entry(bool synchronized);
  address generate_native_entry(bool synchronized);
  address generate_abstract_entry(void);
  address generate_math_entry(AbstractInterpreter::MethodKind kind);
  address generate_empty_entry(void);
  address generate_accessor_entry(void);
  address generate_Reference_get_entry();
  address generate_CRC32_update_entry();
  address generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind);
  void lock_method(void);
  void generate_stack_overflow_check(void);

  void generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue);
  void generate_counter_overflow(Label* do_continue);

#endif // CPU_X86_VM_INTERPRETERGENERATOR_X86_HPP