jdk8-mips64-public/hotspot: src/cpu/x86/vm/globals

6989297: Integrate additional portability improvements
Reviewed-by: vladidan, dholmes

     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

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     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

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    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

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    25 // Sets the default values for platform dependent flags used by the runtime system.

    26 // (see globals.hpp)

    28 define_pd_global(bool, ConvertSleepToYield,      true);

    29 define_pd_global(bool, ShareVtableStubs,         true);

    30 define_pd_global(bool, CountInterpCalls,         true);

    31 define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this

    33 define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks

    34 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast

    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

    44 define_pd_global(intx, CodeEntryAlignment,       32);

    45 #else

    46 define_pd_global(intx, CodeEntryAlignment,       16);

    47 #endif // COMPILER2

    48 define_pd_global(intx, OptoLoopAlignment,        16);

    49 define_pd_global(intx, InlineFrequencyCount,     100);

    50 define_pd_global(intx, InlineSmallCode,          1000);

    52 define_pd_global(intx, StackYellowPages, 2);

    53 define_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

    57 define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2));

    58 #else

    59 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));

    60 #endif // AMD64

    62 define_pd_global(intx, PreInflateSpin,           10);

    64 define_pd_global(bool, RewriteBytecodes,     true);

    65 define_pd_global(bool, RewriteFrequentPairs, true);

    67 define_pd_global(bool, UseMembar,            false);

src/cpu/x86/vm/globals_x86.hpp@3dc12ef8735e