1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/ppc/vm/globals_ppc.hpp Fri Aug 02 16:46:45 2013 +0200
1.3 @@ -0,0 +1,116 @@
1.4 +/*
1.5 + * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2012, 2013 SAP AG. All rights reserved.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef CPU_PPC_VM_GLOBALS_PPC_HPP
1.30 +#define CPU_PPC_VM_GLOBALS_PPC_HPP
1.31 +
1.32 +#include "utilities/globalDefinitions.hpp"
1.33 +#include "utilities/macros.hpp"
1.34 +
1.35 +// Sets the default values for platform dependent flags used by the runtime system.
1.36 +// (see globals.hpp)
1.37 +
1.38 +define_pd_global(bool, ConvertSleepToYield, true);
1.39 +define_pd_global(bool, ShareVtableStubs, false); // Improves performance markedly for mtrt and compress.
1.40 +define_pd_global(bool, NeedsDeoptSuspend, false); // Only register window machines need this.
1.41 +
1.42 +
1.43 +define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks.
1.44 +define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast.
1.45 +
1.46 +// Use large code-entry alignment.
1.47 +define_pd_global(intx, CodeEntryAlignment, 128);
1.48 +define_pd_global(intx, OptoLoopAlignment, 16);
1.49 +define_pd_global(intx, InlineFrequencyCount, 100);
1.50 +define_pd_global(intx, InlineSmallCode, 1500);
1.51 +
1.52 +define_pd_global(intx, PreInflateSpin, 10);
1.53 +
1.54 +// Flags for template interpreter.
1.55 +define_pd_global(bool, RewriteBytecodes, true);
1.56 +define_pd_global(bool, RewriteFrequentPairs, true);
1.57 +
1.58 +define_pd_global(bool, UseMembar, false);
1.59 +
1.60 +// GC Ergo Flags
1.61 +define_pd_global(intx, CMSYoungGenPerWorker, 16*M); // Default max size of CMS young gen, per GC worker thread.
1.62 +
1.63 +
1.64 +// Platform dependent flag handling: flags only defined on this platform.
1.65 +#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \
1.66 + product(uintx, PowerArchitecturePPC64, 0, \
1.67 + "CPU Version: x for PowerX. Currently recognizes Power5 to " \
1.68 + "Power7. Default is 0. CPUs newer than Power7 will be " \
1.69 + "recognized as Power7.") \
1.70 + \
1.71 + /* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \
1.72 + /* indirect call by a direct call. */ \
1.73 + product(bool, ReoptimizeCallSequences, true, \
1.74 + "Reoptimize code-sequences of calls at runtime.") \
1.75 + \
1.76 + product(bool, UseLoadInstructionsForStackBangingPPC64, false, \
1.77 + "Use load instructions for stack banging.") \
1.78 + \
1.79 + /* special instructions */ \
1.80 + \
1.81 + product(bool, UseCountLeadingZerosInstructionsPPC64, true, \
1.82 + "Use count leading zeros instructions.") \
1.83 + \
1.84 + product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, \
1.85 + "Use extended versions of load-and-reserve instructions.") \
1.86 + \
1.87 + product(bool, UseRotateAndMaskInstructionsPPC64, true, \
1.88 + "Use rotate and mask instructions.") \
1.89 + \
1.90 + product(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, \
1.91 + "Use static branch prediction hints in CAS operations.") \
1.92 + \
1.93 + /* Trap based checks. */ \
1.94 + /* Trap based checks use the ppc trap instructions to check certain */ \
1.95 + /* conditions. This instruction raises a SIGTRAP caught by the */ \
1.96 + /* exception handler of the VM. */ \
1.97 + product(bool, UseSIGTRAP, false, \
1.98 + "Allow trap instructions that make use of SIGTRAP. Use this to " \
1.99 + "switch off all optimizations requiring SIGTRAP.") \
1.100 + product(bool, TrapBasedICMissChecks, true, \
1.101 + "Raise and handle SIGTRAP if inline cache miss detected.") \
1.102 + product(bool, TrapBasedNotEntrantChecks, true, \
1.103 + "Raise and handle SIGTRAP if calling not entrant or zombie" \
1.104 + " method.") \
1.105 + product(bool, TrapBasedNullChecks, true, \
1.106 + "Generate code for null checks that uses a cmp and trap " \
1.107 + "instruction raising SIGTRAP. This is only used if an access to" \
1.108 + "null (+offset) will not raise a SIGSEGV.") \
1.109 + product(bool, TrapBasedRangeChecks, true, \
1.110 + "Raise and handle SIGTRAP if array out of bounds check fails.") \
1.111 + product(bool, TraceTraps, false, "Trace all traps the signal handler" \
1.112 + "handles.") \
1.113 + \
1.114 + product(bool, ZapMemory, false, "Write 0x0101... to empty memory." \
1.115 + " Use this to ease debugging.") \
1.116 +
1.117 +
1.118 +
1.119 +#endif // CPU_PPC_VM_GLOBALS_PPC_HPP
