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1 /*
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2 * Copyright 2000-2009 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Sets the default values for platform dependent flags used by the runtime system.
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26 // (see globals.hpp)
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27
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1064
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28 define_pd_global(bool, ConvertSleepToYield, true);
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29 define_pd_global(bool, ShareVtableStubs, true);
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30 define_pd_global(bool, CountInterpCalls, true);
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31 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this
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32
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33 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
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34 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
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35
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36 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
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37 // assign a different value for C2 without touching a number of files. Use
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38 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
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39 // c1 doesn't have this problem because the fix to 4858033 assures us
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40 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
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41 // the uep and the vep doesn't get real alignment but just slops on by
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42 // only assured that the entry instruction meets the 5 byte size requirement.
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43 #ifdef COMPILER2
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44 define_pd_global(intx, CodeEntryAlignment, 32);
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45 #else
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46 define_pd_global(intx, CodeEntryAlignment, 16);
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47 #endif // COMPILER2
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48 define_pd_global(intx, InlineFrequencyCount, 100);
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49 define_pd_global(intx, InlineSmallCode, 1000);
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50
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1064
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51 define_pd_global(intx, StackYellowPages, 2);
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52 define_pd_global(intx, StackRedPages, 1);
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53 #ifdef AMD64
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54 // Very large C++ stack frames using solaris-amd64 optimized builds
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55 // due to lack of optimization caused by C++ compiler bugs
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56 define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2));
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57 #else
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58 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
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59 #endif // AMD64
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60
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61 define_pd_global(intx, PreInflateSpin, 10);
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62
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63 define_pd_global(bool, RewriteBytecodes, true);
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64 define_pd_global(bool, RewriteFrequentPairs, true);
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