hotspot/src/cpu/aarch64/vm/globals_aarch64.hpp
author fyang
Tue, 12 Apr 2016 11:53:44 +0800
changeset 38037 31c22b526d30
parent 36564 9442bb67de26
child 38079 fd24ad51113a
child 38143 3b732f17ea7d
permissions -rw-r--r--
8153713: aarch64: improve short array clearing using store pair Summary: aarch64: generate store pair instruction to clear short arrays Reviewed-by: aph
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/*
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 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
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 * Copyright (c) 2015, Red Hat Inc. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef CPU_AARCH64_VM_GLOBALS_AARCH64_HPP
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#define CPU_AARCH64_VM_GLOBALS_AARCH64_HPP
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/macros.hpp"
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// Sets the default values for platform dependent flags used by the runtime system.
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// (see globals.hpp)
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define_pd_global(bool, ShareVtableStubs,         true);
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define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
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define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
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define_pd_global(bool, TrapBasedNullChecks,  false);
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define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast
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define_pd_global(intx, CodeEntryAlignment,       64);
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define_pd_global(intx, OptoLoopAlignment,        16);
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define_pd_global(intx, InlineFrequencyCount,     100);
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#define DEFAULT_STACK_YELLOW_PAGES (2)
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#define DEFAULT_STACK_RED_PAGES (1)
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#define DEFAULT_STACK_SHADOW_PAGES (4 DEBUG_ONLY(+5))
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#define DEFAULT_STACK_RESERVED_PAGES (0)
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#define MIN_STACK_YELLOW_PAGES 1
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#define MIN_STACK_RED_PAGES    1
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#define MIN_STACK_SHADOW_PAGES 1
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#define MIN_STACK_RESERVED_PAGES (0)
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define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES);
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define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES);
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define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES);
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define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES);
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define_pd_global(bool, RewriteBytecodes,     true);
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define_pd_global(bool, RewriteFrequentPairs, true);
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define_pd_global(bool, UseMembar,            true);
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define_pd_global(bool, PreserveFramePointer, false);
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// GC Ergo Flags
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define_pd_global(uintx, CMSYoungGenPerWorker, 64*M);  // default max size of CMS young gen, per GC worker thread
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define_pd_global(uintx, TypeProfileLevel, 111);
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// No performance work done here yet.
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define_pd_global(bool, CompactStrings, false);
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// avoid biased locking while we are bootstrapping the aarch64 build
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define_pd_global(bool, UseBiasedLocking, false);
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// Clear short arrays bigger than one word in an arch-specific way
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define_pd_global(intx, InitArrayShortSize, BytesPerLong);
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#if defined(COMPILER1) || defined(COMPILER2)
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define_pd_global(intx, InlineSmallCode,          1000);
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#endif
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#ifdef BUILTIN_SIM
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#define UseBuiltinSim           true
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#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint) \
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                                                                        \
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  product(bool, NotifySimulator, UseBuiltinSim,                         \
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         "tell the AArch64 sim where we are in method code")            \
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                                                                        \
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  product(bool, UseSimulatorCache, false,                               \
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         "tell sim to cache memory updates until exclusive op occurs")  \
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                                                                        \
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  product(bool, DisableBCCheck, true,                                   \
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          "tell sim not to invoke bccheck callback")                    \
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                                                                        \
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  product(bool, NearCpool, true,                                        \
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         "constant pool is close to instructions")                      \
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                                                                        \
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  product(bool, UseBarriersForVolatile, false,                          \
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          "Use memory barriers to implement volatile accesses")         \
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                                                                        \
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  product(bool, UseCRC32, false,                                        \
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          "Use CRC32 instructions for CRC32 computation")               \
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                                                                        \
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  product(bool, UseLSE, false,                                          \
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          "Use LSE instructions")                                       \
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// Don't attempt to use Neon on builtin sim until builtin sim supports it
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#define UseCRC32 false
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#define UseSIMDForMemoryOps    false
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#else
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#define UseBuiltinSim           false
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#define NotifySimulator         false
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#define UseSimulatorCache       false
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#define DisableBCCheck          true
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#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint) \
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                                                                        \
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  product(bool, NearCpool, true,                                        \
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         "constant pool is close to instructions")                      \
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                                                                        \
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  product(bool, UseBarriersForVolatile, false,                          \
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          "Use memory barriers to implement volatile accesses")         \
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  product(bool, UseNeon, false,                                         \
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          "Use Neon for CRC32 computation")                             \
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  product(bool, UseCRC32, false,                                        \
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          "Use CRC32 instructions for CRC32 computation")               \
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  product(bool, UseSIMDForMemoryOps, false,                             \
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          "Use SIMD instructions in generated memory move code")        \
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  product(bool, UseLSE, false,                                          \
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          "Use LSE instructions")                                       \
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  product(bool, TraceTraps, false, "Trace all traps the signal handler")
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#endif
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#endif // CPU_AARCH64_VM_GLOBALS_AARCH64_HPP