globals_x86.hpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 2000, 2009, 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// Sets the default values for platform dependent flags used by the runtime system. 26// (see globals.hpp) 27 28define_pd_global(bool, ConvertSleepToYield, true); 29define_pd_global(bool, ShareVtableStubs, true); 30define_pd_global(bool, CountInterpCalls, true); 31define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this 32 33define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks 34define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast 35 36// See 4827828 for this change. There is no globals_core_i486.hpp. I can't 37// assign a different value for C2 without touching a number of files. Use 38// #ifdef to minimize the change as it's late in Mantis. -- FIXME. 39// c1 doesn't have this problem because the fix to 4858033 assures us 40// the the vep is aligned at CodeEntryAlignment whereas c2 only aligns 41// the uep and the vep doesn't get real alignment but just slops on by 42// only assured that the entry instruction meets the 5 byte size requirement. 43#ifdef COMPILER2 44define_pd_global(intx, CodeEntryAlignment, 32); 45#else 46define_pd_global(intx, CodeEntryAlignment, 16); 47#endif // COMPILER2 48define_pd_global(intx, OptoLoopAlignment, 16); 49define_pd_global(intx, InlineFrequencyCount, 100); 50define_pd_global(intx, InlineSmallCode, 1000); 51 52define_pd_global(intx, StackYellowPages, 2); 53define_pd_global(intx, StackRedPages, 1); 54#ifdef AMD64 55// Very large C++ stack frames using solaris-amd64 optimized builds 56// due to lack of optimization caused by C++ compiler bugs 57define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2)); 58#else 59define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); 60#endif // AMD64 61 62define_pd_global(intx, PreInflateSpin, 10); 63 64define_pd_global(bool, RewriteBytecodes, true); 65define_pd_global(bool, RewriteFrequentPairs, true); 66