src/cpu/x86/vm/globals_x86.hpp

Fri, 06 Mar 2009 21:36:50 -0800

author
jrose
date
Fri, 06 Mar 2009 21:36:50 -0800
changeset 1058
9adddb8c0fc8
parent 435
a61af66fc99e
child 1110
f6da6f0174ac
permissions
-rw-r--r--

6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
Summary: Code in vtableStubs and templateTable moved into MacroAssembler.
Reviewed-by: kvn

     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  */
    25 //
    26 // Sets the default values for platform dependent flags used by the runtime system.
    27 // (see globals.hpp)
    28 //
    30 define_pd_global(bool,  ConvertSleepToYield,      true);
    31 define_pd_global(bool,  ShareVtableStubs,         true);
    32 define_pd_global(bool,  CountInterpCalls,         true);
    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
    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
    50 define_pd_global(bool, NeedsDeoptSuspend,           false); // only register window machines need this
    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);
    65 define_pd_global(intx, StackYellowPages, 2);
    66 define_pd_global(intx, StackRedPages, 1);
    68 define_pd_global(bool, RewriteBytecodes,     true);
    69 define_pd_global(bool, RewriteFrequentPairs, true);

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