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comparison src/cpu/x86/vm/globals_x86.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children f6da6f0174ac
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 //
26 // Sets the default values for platform dependent flags used by the runtime system.
27 // (see globals.hpp)
28 //
29
30 define_pd_global(bool, ConvertSleepToYield, true);
31 define_pd_global(bool, ShareVtableStubs, true);
32 define_pd_global(bool, CountInterpCalls, true);
33
34 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
35 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
36
37 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
38 // assign a different value for C2 without touching a number of files. Use
39 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
40 // c1 doesn't have this problem because the fix to 4858033 assures us
41 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
42 // the uep and the vep doesn't get real alignment but just slops on by
43 // only assured that the entry instruction meets the 5 byte size requirement.
44 #ifdef COMPILER2
45 define_pd_global(intx, CodeEntryAlignment, 32);
46 #else
47 define_pd_global(intx, CodeEntryAlignment, 16);
48 #endif // COMPILER2
49
50 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this
51
52 define_pd_global(uintx, TLABSize, 0);
53 #ifdef AMD64
54 define_pd_global(uintx, NewSize, ScaleForWordSize(2048 * K));
55 // Very large C++ stack frames using solaris-amd64 optimized builds
56 // due to lack of optimization caused by C++ compiler bugs
57 define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2));
58 #else
59 define_pd_global(uintx, NewSize, 1024 * K);
60 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
61 #endif // AMD64
62 define_pd_global(intx, InlineFrequencyCount, 100);
63 define_pd_global(intx, PreInflateSpin, 10);
64
65 define_pd_global(intx, StackYellowPages, 2);
66 define_pd_global(intx, StackRedPages, 1);
67
68 define_pd_global(bool, RewriteBytecodes, true);
69 define_pd_global(bool, RewriteFrequentPairs, true);