| /* |
| * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2012, 2013 SAP AG. 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_PPC_VM_GLOBALS_PPC_HPP |
| #define CPU_PPC_VM_GLOBALS_PPC_HPP |
| |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/macros.hpp" |
| |
| // Sets the default values for platform dependent flags used by the runtime system. |
| // (see globals.hpp) |
| |
| define_pd_global(bool, ConvertSleepToYield, true); |
| define_pd_global(bool, ShareVtableStubs, false); // Improves performance markedly for mtrt and compress. |
| define_pd_global(bool, NeedsDeoptSuspend, false); // Only register window machines need this. |
| |
| |
| define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks. |
| define_pd_global(bool, TrapBasedNullChecks, true); |
| define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast. |
| |
| // Use large code-entry alignment. |
| define_pd_global(intx, CodeEntryAlignment, 128); |
| define_pd_global(intx, OptoLoopAlignment, 16); |
| define_pd_global(intx, InlineFrequencyCount, 100); |
| define_pd_global(intx, InlineSmallCode, 1500); |
| |
| define_pd_global(intx, PreInflateSpin, 10); |
| |
| // Flags for template interpreter. |
| define_pd_global(bool, RewriteBytecodes, true); |
| define_pd_global(bool, RewriteFrequentPairs, true); |
| |
| define_pd_global(bool, UseMembar, false); |
| |
| define_pd_global(bool, PreserveFramePointer, false); |
| |
| // GC Ergo Flags |
| define_pd_global(uintx, CMSYoungGenPerWorker, 16*M); // Default max size of CMS young gen, per GC worker thread. |
| |
| define_pd_global(uintx, TypeProfileLevel, 0); |
| |
| // Platform dependent flag handling: flags only defined on this platform. |
| #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ |
| \ |
| /* Load poll address from thread. This is used to implement per-thread */ \ |
| /* safepoints on platforms != IA64. */ \ |
| product(bool, LoadPollAddressFromThread, false, \ |
| "Load polling page address from thread object (required for " \ |
| "per-thread safepoints on platforms != IA64)") \ |
| \ |
| product(uintx, PowerArchitecturePPC64, 0, \ |
| "CPU Version: x for PowerX. Currently recognizes Power5 to " \ |
| "Power7. Default is 0. CPUs newer than Power7 will be " \ |
| "recognized as Power7.") \ |
| \ |
| /* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \ |
| /* indirect call by a direct call. */ \ |
| product(bool, ReoptimizeCallSequences, true, \ |
| "Reoptimize code-sequences of calls at runtime.") \ |
| \ |
| product(bool, UseLoadInstructionsForStackBangingPPC64, false, \ |
| "Use load instructions for stack banging.") \ |
| \ |
| /* special instructions */ \ |
| \ |
| product(bool, UseCountLeadingZerosInstructionsPPC64, true, \ |
| "Use count leading zeros instructions.") \ |
| \ |
| product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, \ |
| "Use extended versions of load-and-reserve instructions.") \ |
| \ |
| product(bool, UseRotateAndMaskInstructionsPPC64, true, \ |
| "Use rotate and mask instructions.") \ |
| \ |
| product(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, \ |
| "Use static branch prediction hints in CAS operations.") \ |
| product(bool, UseStaticBranchPredictionForUncommonPathsPPC64, false, \ |
| "Use static branch prediction hints for uncommon paths.") \ |
| \ |
| product(bool, UsePower6SchedulerPPC64, false, \ |
| "Use Power6 Scheduler.") \ |
| \ |
| product(bool, InsertEndGroupPPC64, false, \ |
| "Insert EndGroup instructions to optimize for Power6.") \ |
| \ |
| /* Trap based checks. */ \ |
| /* Trap based checks use the ppc trap instructions to check certain */ \ |
| /* conditions. This instruction raises a SIGTRAP caught by the */ \ |
| /* exception handler of the VM. */ \ |
| product(bool, UseSIGTRAP, true, \ |
| "Allow trap instructions that make use of SIGTRAP. Use this to " \ |
| "switch off all optimizations requiring SIGTRAP.") \ |
| product(bool, TrapBasedICMissChecks, true, \ |
| "Raise and handle SIGTRAP if inline cache miss detected.") \ |
| product(bool, TrapBasedNotEntrantChecks, true, \ |
| "Raise and handle SIGTRAP if calling not entrant or zombie" \ |
| " method.") \ |
| product(bool, TraceTraps, false, "Trace all traps the signal handler" \ |
| "handles.") \ |
| \ |
| product(bool, ZapMemory, false, "Write 0x0101... to empty memory." \ |
| " Use this to ease debugging.") \ |
| |
| |
| #endif // CPU_PPC_VM_GLOBALS_PPC_HPP |