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comparison: src/cpu/x86/vm/globals_x86.hpp
src/cpu/x86/vm/globals_x86.hpp
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| 1 /* | |
| 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef CPU_X86_VM_GLOBALS_X86_HPP | |
| 26 #define CPU_X86_VM_GLOBALS_X86_HPP | |
| 27 | |
| 28 #include "utilities/globalDefinitions.hpp" | |
| 29 #include "utilities/macros.hpp" | |
| 30 | |
| 31 // Sets the default values for platform dependent flags used by the runtime system. | |
| 32 // (see globals.hpp) | |
| 33 | |
| 34 define_pd_global(bool, ConvertSleepToYield, true); | |
| 35 define_pd_global(bool, ShareVtableStubs, true); | |
| 36 define_pd_global(bool, CountInterpCalls, true); | |
| 37 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this | |
| 38 | |
| 39 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks | |
| 40 define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on x86. | |
| 41 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast | |
| 42 | |
| 43 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't | |
| 44 // assign a different value for C2 without touching a number of files. Use | |
| 45 // #ifdef to minimize the change as it's late in Mantis. -- FIXME. | |
| 46 // c1 doesn't have this problem because the fix to 4858033 assures us | |
| 47 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns | |
| 48 // the uep and the vep doesn't get real alignment but just slops on by | |
| 49 // only assured that the entry instruction meets the 5 byte size requirement. | |
| 50 #ifdef COMPILER2 | |
| 51 define_pd_global(intx, CodeEntryAlignment, 32); | |
| 52 #else | |
| 53 define_pd_global(intx, CodeEntryAlignment, 16); | |
| 54 #endif // COMPILER2 | |
| 55 define_pd_global(intx, OptoLoopAlignment, 16); | |
| 56 define_pd_global(intx, InlineFrequencyCount, 100); | |
| 57 define_pd_global(intx, InlineSmallCode, 1000); | |
| 58 | |
| 59 define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3)); | |
| 60 define_pd_global(intx, StackRedPages, 1); | |
| 61 #ifdef AMD64 | |
| 62 // Very large C++ stack frames using solaris-amd64 optimized builds | |
| 63 // due to lack of optimization caused by C++ compiler bugs | |
| 64 define_pd_global(intx, StackShadowPages, NOT_WIN64(20) WIN64_ONLY(6) DEBUG_ONLY(+2)); | |
| 65 #else | |
| 66 define_pd_global(intx, StackShadowPages, 4 DEBUG_ONLY(+5)); | |
| 67 #endif // AMD64 | |
| 68 | |
| 69 define_pd_global(intx, PreInflateSpin, 10); | |
| 70 | |
| 71 define_pd_global(bool, RewriteBytecodes, true); | |
| 72 define_pd_global(bool, RewriteFrequentPairs, true); | |
| 73 | |
| 74 #ifdef _ALLBSD_SOURCE | |
| 75 define_pd_global(bool, UseMembar, true); | |
| 76 #else | |
| 77 define_pd_global(bool, UseMembar, false); | |
| 78 #endif | |
| 79 | |
| 80 // GC Ergo Flags | |
| 81 define_pd_global(uintx, CMSYoungGenPerWorker, 64*M); // default max size of CMS young gen, per GC worker thread | |
| 82 | |
| 83 define_pd_global(uintx, TypeProfileLevel, 111); | |
| 84 | |
| 85 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ | |
| 86 \ | |
| 87 develop(bool, IEEEPrecision, true, \ | |
| 88 "Enables IEEE precision (for INTEL only)") \ | |
| 89 \ | |
| 90 product(intx, FenceInstruction, 0, \ | |
| 91 "(Unsafe,Unstable) Experimental") \ | |
| 92 \ | |
| 93 product(intx, ReadPrefetchInstr, 0, \ | |
| 94 "Prefetch instruction to prefetch ahead") \ | |
| 95 \ | |
| 96 product(bool, UseStoreImmI16, true, \ | |
| 97 "Use store immediate 16-bits value instruction on x86") \ | |
| 98 \ | |
| 99 product(intx, UseAVX, 99, \ | |
| 100 "Highest supported AVX instructions set on x86/x64") \ | |
| 101 \ | |
| 102 product(bool, UseCLMUL, false, \ | |
| 103 "Control whether CLMUL instructions can be used on x86/x64") \ | |
| 104 \ | |
| 105 diagnostic(bool, UseIncDec, true, \ | |
| 106 "Use INC, DEC instructions on x86") \ | |
| 107 \ | |
| 108 product(bool, UseNewLongLShift, false, \ | |
| 109 "Use optimized bitwise shift left") \ | |
| 110 \ | |
| 111 product(bool, UseAddressNop, false, \ | |
| 112 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
| 113 \ | |
| 114 product(bool, UseXmmLoadAndClearUpper, true, \ | |
| 115 "Load low part of XMM register and clear upper part") \ | |
| 116 \ | |
| 117 product(bool, UseXmmRegToRegMoveAll, false, \ | |
| 118 "Copy all XMM register bits when moving value between registers") \ | |
| 119 \ | |
| 120 product(bool, UseXmmI2D, false, \ | |
| 121 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
| 122 \ | |
| 123 product(bool, UseXmmI2F, false, \ | |
| 124 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
| 125 \ | |
| 126 product(bool, UseUnalignedLoadStores, false, \ | |
| 127 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
| 128 \ | |
| 129 product(bool, UseFastStosb, false, \ | |
| 130 "Use fast-string operation for zeroing: rep stosb") \ | |
| 131 \ | |
| 132 /* Use Restricted Transactional Memory for lock eliding */ \ | |
| 133 experimental(bool, UseRTMLocking, false, \ | |
| 134 "Enable RTM lock eliding for inflated locks in compiled code") \ | |
| 135 \ | |
| 136 experimental(bool, UseRTMForStackLocks, false, \ | |
| 137 "Enable RTM lock eliding for stack locks in compiled code") \ | |
| 138 \ | |
| 139 experimental(bool, UseRTMDeopt, false, \ | |
| 140 "Perform deopt and recompilation based on RTM abort ratio") \ | |
| 141 \ | |
| 142 experimental(uintx, RTMRetryCount, 5, \ | |
| 143 "Number of RTM retries on lock abort or busy") \ | |
| 144 \ | |
| 145 experimental(intx, RTMSpinLoopCount, 100, \ | |
| 146 "Spin count for lock to become free before RTM retry") \ | |
| 147 \ | |
| 148 experimental(intx, RTMAbortThreshold, 1000, \ | |
| 149 "Calculate abort ratio after this number of aborts") \ | |
| 150 \ | |
| 151 experimental(intx, RTMLockingThreshold, 10000, \ | |
| 152 "Lock count at which to do RTM lock eliding without " \ | |
| 153 "abort ratio calculation") \ | |
| 154 \ | |
| 155 experimental(intx, RTMAbortRatio, 50, \ | |
| 156 "Lock abort ratio at which to stop use RTM lock eliding") \ | |
| 157 \ | |
| 158 experimental(intx, RTMTotalCountIncrRate, 64, \ | |
| 159 "Increment total RTM attempted lock count once every n times") \ | |
| 160 \ | |
| 161 experimental(intx, RTMLockingCalculationDelay, 0, \ | |
| 162 "Number of milliseconds to wait before start calculating aborts " \ | |
| 163 "for RTM locking") \ | |
| 164 \ | |
| 165 experimental(bool, UseRTMXendForLockBusy, true, \ | |
| 166 "Use RTM Xend instead of Xabort when lock busy") \ | |
| 167 \ | |
| 168 /* assembler */ \ | |
| 169 product(bool, Use486InstrsOnly, false, \ | |
| 170 "Use 80486 Compliant instruction subset") \ | |
| 171 \ | |
| 172 product(bool, UseCountLeadingZerosInstruction, false, \ | |
| 173 "Use count leading zeros instruction") \ | |
| 174 \ | |
| 175 product(bool, UseCountTrailingZerosInstruction, false, \ | |
| 176 "Use count trailing zeros instruction") \ | |
| 177 \ | |
| 178 product(bool, UseBMI1Instructions, false, \ | |
| 179 "Use BMI instructions") | |
| 180 | |
| 181 #endif // CPU_X86_VM_GLOBALS_X86_HPP |
