goetz@6458: /* goetz@6458: * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. goetz@6458: * Copyright 2012, 2013 SAP AG. All rights reserved. goetz@6458: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. goetz@6458: * goetz@6458: * This code is free software; you can redistribute it and/or modify it goetz@6458: * under the terms of the GNU General Public License version 2 only, as goetz@6458: * published by the Free Software Foundation. goetz@6458: * goetz@6458: * This code is distributed in the hope that it will be useful, but WITHOUT goetz@6458: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or goetz@6458: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License goetz@6458: * version 2 for more details (a copy is included in the LICENSE file that goetz@6458: * accompanied this code). goetz@6458: * goetz@6458: * You should have received a copy of the GNU General Public License version goetz@6458: * 2 along with this work; if not, write to the Free Software Foundation, goetz@6458: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. goetz@6458: * goetz@6458: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA goetz@6458: * or visit www.oracle.com if you need additional information or have any goetz@6458: * questions. goetz@6458: * goetz@6458: */ goetz@6458: goetz@6458: #ifndef CPU_PPC_VM_GLOBALS_PPC_HPP goetz@6458: #define CPU_PPC_VM_GLOBALS_PPC_HPP goetz@6458: goetz@6458: #include "utilities/globalDefinitions.hpp" goetz@6458: #include "utilities/macros.hpp" goetz@6458: goetz@6458: // Sets the default values for platform dependent flags used by the runtime system. goetz@6458: // (see globals.hpp) goetz@6458: goetz@6458: define_pd_global(bool, ConvertSleepToYield, true); goetz@6458: define_pd_global(bool, ShareVtableStubs, false); // Improves performance markedly for mtrt and compress. goetz@6458: define_pd_global(bool, NeedsDeoptSuspend, false); // Only register window machines need this. goetz@6458: goetz@6458: goetz@6458: define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks. goetz@6458: define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast. goetz@6458: goetz@6458: // Use large code-entry alignment. goetz@6458: define_pd_global(intx, CodeEntryAlignment, 128); goetz@6458: define_pd_global(intx, OptoLoopAlignment, 16); goetz@6458: define_pd_global(intx, InlineFrequencyCount, 100); goetz@6458: define_pd_global(intx, InlineSmallCode, 1500); goetz@6458: goetz@6458: define_pd_global(intx, PreInflateSpin, 10); goetz@6458: goetz@6458: // Flags for template interpreter. goetz@6458: define_pd_global(bool, RewriteBytecodes, true); goetz@6458: define_pd_global(bool, RewriteFrequentPairs, true); goetz@6458: goetz@6458: define_pd_global(bool, UseMembar, false); goetz@6458: goetz@6458: // GC Ergo Flags goetz@6473: define_pd_global(uintx, CMSYoungGenPerWorker, 16*M); // Default max size of CMS young gen, per GC worker thread. goetz@6458: goetz@6475: define_pd_global(uintx, TypeProfileLevel, 0); goetz@6458: goetz@6458: // Platform dependent flag handling: flags only defined on this platform. goetz@6458: #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ goetz@6458: product(uintx, PowerArchitecturePPC64, 0, \ goetz@6458: "CPU Version: x for PowerX. Currently recognizes Power5 to " \ goetz@6458: "Power7. Default is 0. CPUs newer than Power7 will be " \ goetz@6458: "recognized as Power7.") \ goetz@6458: \ goetz@6458: /* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \ goetz@6458: /* indirect call by a direct call. */ \ goetz@6458: product(bool, ReoptimizeCallSequences, true, \ goetz@6458: "Reoptimize code-sequences of calls at runtime.") \ goetz@6458: \ goetz@6458: product(bool, UseLoadInstructionsForStackBangingPPC64, false, \ goetz@6458: "Use load instructions for stack banging.") \ goetz@6458: \ goetz@6458: /* special instructions */ \ goetz@6458: \ goetz@6458: product(bool, UseCountLeadingZerosInstructionsPPC64, true, \ goetz@6458: "Use count leading zeros instructions.") \ goetz@6458: \ goetz@6458: product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, \ goetz@6458: "Use extended versions of load-and-reserve instructions.") \ goetz@6458: \ goetz@6458: product(bool, UseRotateAndMaskInstructionsPPC64, true, \ goetz@6458: "Use rotate and mask instructions.") \ goetz@6458: \ goetz@6458: product(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, \ goetz@6458: "Use static branch prediction hints in CAS operations.") \ goetz@6458: \ goetz@6458: /* Trap based checks. */ \ goetz@6458: /* Trap based checks use the ppc trap instructions to check certain */ \ goetz@6458: /* conditions. This instruction raises a SIGTRAP caught by the */ \ goetz@6458: /* exception handler of the VM. */ \ goetz@6486: product(bool, UseSIGTRAP, true, \ goetz@6458: "Allow trap instructions that make use of SIGTRAP. Use this to " \ goetz@6458: "switch off all optimizations requiring SIGTRAP.") \ goetz@6458: product(bool, TrapBasedICMissChecks, true, \ goetz@6458: "Raise and handle SIGTRAP if inline cache miss detected.") \ goetz@6458: product(bool, TrapBasedNotEntrantChecks, true, \ goetz@6458: "Raise and handle SIGTRAP if calling not entrant or zombie" \ goetz@6458: " method.") \ goetz@6458: product(bool, TrapBasedNullChecks, true, \ goetz@6458: "Generate code for null checks that uses a cmp and trap " \ goetz@6458: "instruction raising SIGTRAP. This is only used if an access to" \ goetz@6458: "null (+offset) will not raise a SIGSEGV.") \ goetz@6458: product(bool, TrapBasedRangeChecks, true, \ goetz@6458: "Raise and handle SIGTRAP if array out of bounds check fails.") \ goetz@6458: product(bool, TraceTraps, false, "Trace all traps the signal handler" \ goetz@6458: "handles.") \ goetz@6458: \ goetz@6458: product(bool, ZapMemory, false, "Write 0x0101... to empty memory." \ goetz@6458: " Use this to ease debugging.") \ goetz@6458: goetz@6458: goetz@6458: goetz@6458: #endif // CPU_PPC_VM_GLOBALS_PPC_HPP