Mercurial > hg > truffle

view src/cpu/x86/vm/c2_globals_x86.hpp @ 15388:769fc3629f59

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 4ca6dc0799b6
children 89152779163c
line wrap: on
line source

/*
 * Copyright (c) 2000, 2012, 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
 * questions.
 *
 */

#ifndef CPU_X86_VM_C2_GLOBALS_X86_HPP
#define CPU_X86_VM_C2_GLOBALS_X86_HPP

#include "utilities/globalDefinitions.hpp"
#include "utilities/macros.hpp"

// Sets the default values for platform dependent flags used by the server compiler.
// (see c2_globals.hpp).  Alpha-sorted.
define_pd_global(bool, BackgroundCompilation,        true);
define_pd_global(bool, UseTLAB,                      true);
define_pd_global(bool, ResizeTLAB,                   true);
define_pd_global(bool, CICompileOSR,                 true);
define_pd_global(bool, InlineIntrinsics,             true);
define_pd_global(bool, PreferInterpreterNativeStubs, false);
define_pd_global(bool, ProfileTraps,                 true);
define_pd_global(bool, UseOnStackReplacement,        true);
define_pd_global(intx, TypeProfileWidth,             2   );
define_pd_global(intx, MethodProfileWidth,           0   );
#ifdef CC_INTERP
define_pd_global(bool, ProfileInterpreter,           false);
#else
define_pd_global(bool, ProfileInterpreter,           true);
#endif // CC_INTERP
define_pd_global(bool, TieredCompilation,            trueInTiered);
define_pd_global(intx, CompileThreshold,             10000);
define_pd_global(intx, BackEdgeThreshold,            100000);

define_pd_global(intx, OnStackReplacePercentage,     140);
define_pd_global(intx, ConditionalMoveLimit,         3);
define_pd_global(intx, FLOATPRESSURE,                6);
define_pd_global(intx, FreqInlineSize,               325);
define_pd_global(intx, MinJumpTableSize,             10);
#ifdef AMD64
define_pd_global(intx, INTPRESSURE,                  13);
define_pd_global(intx, InteriorEntryAlignment,       16);
define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
define_pd_global(intx, LoopUnrollLimit,              60);
// InitialCodeCacheSize derived from specjbb2000 run.
define_pd_global(intx, InitialCodeCacheSize,         2496*K); // Integral multiple of CodeCacheExpansionSize
define_pd_global(intx, CodeCacheExpansionSize,       64*K);

// Ergonomics related flags
define_pd_global(uint64_t,MaxRAM,                    128ULL*G);
#else
define_pd_global(intx, INTPRESSURE,                  6);
define_pd_global(intx, InteriorEntryAlignment,       4);
define_pd_global(intx, NewSizeThreadIncrease,        4*K);
define_pd_global(intx, LoopUnrollLimit,              50);     // Design center runs on 1.3.1
// InitialCodeCacheSize derived from specjbb2000 run.
define_pd_global(intx, InitialCodeCacheSize,         2304*K); // Integral multiple of CodeCacheExpansionSize
define_pd_global(intx, CodeCacheExpansionSize,       32*K);

// Ergonomics related flags
define_pd_global(uint64_t,MaxRAM,                    4ULL*G);
#endif // AMD64
define_pd_global(intx, RegisterCostAreaRatio,        16000);

// Peephole and CISC spilling both break the graph, and so makes the
// scheduler sick.
define_pd_global(bool, OptoPeephole,                 true);
define_pd_global(bool, UseCISCSpill,                 true);
define_pd_global(bool, OptoScheduling,               false);
define_pd_global(bool, OptoBundling,                 false);

#ifdef GRAAL
define_pd_global(intx, ReservedCodeCacheSize,        64*M);
#else
define_pd_global(intx, ReservedCodeCacheSize,        48*M);
#endif
define_pd_global(uintx, CodeCacheMinBlockLength,     4);
define_pd_global(uintx, CodeCacheMinimumUseSpace,    400*K);

// Heap related flags
define_pd_global(uintx,MetaspaceSize,    ScaleForWordSize(16*M));

// Ergonomics related flags
define_pd_global(bool, NeverActAsServerClassMachine, false);

#endif // CPU_X86_VM_C2_GLOBALS_X86_HPP