| /* |
| * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
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| * |
| */ |
| |
| #ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP |
| #define CPU_SPARC_VM_GLOBALS_SPARC_HPP |
| |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/macros.hpp" |
| |
| // Sets the default values for platform dependent flags used by the runtime system. |
| // (see globals.hpp) |
| |
| // For sparc we do not do call backs when a thread is in the interpreter, because the |
| // interpreter dispatch needs at least two instructions - first to load the dispatch address |
| // in a register, and second to jmp. The swapping of the dispatch table may occur _after_ |
| // the load of the dispatch address and hence the jmp would still go to the location |
| // according to the prior table. So, we let the thread continue and let it block by itself. |
| define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second |
| define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress |
| define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this |
| |
| define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks |
| define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on sparc. |
| define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast |
| |
| define_pd_global(uintx, CodeCacheSegmentSize, 64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment. |
| define_pd_global(intx, CodeEntryAlignment, 32); |
| // The default setting 16/16 seems to work best. |
| // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.) |
| define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize |
| define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC |
| define_pd_global(intx, InlineSmallCode, 1500); |
| |
| #define DEFAULT_STACK_YELLOW_PAGES (2) |
| #define DEFAULT_STACK_RED_PAGES (1) |
| #define DEFAULT_STACK_RESERVED_PAGES (SOLARIS_ONLY(1) NOT_SOLARIS(0)) |
| |
| define_pd_global(intx, CompilerThreadStackSize, 1024); |
| define_pd_global(intx, ThreadStackSize, 1024); |
| define_pd_global(intx, VMThreadStackSize, 1024); |
| #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2)) |
| |
| #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES |
| #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES |
| #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES |
| #define MIN_STACK_RESERVED_PAGES (0) |
| |
| define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES); |
| define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES); |
| define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES); |
| define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES); |
| |
| define_pd_global(bool, RewriteBytecodes, true); |
| define_pd_global(bool, RewriteFrequentPairs, true); |
| |
| define_pd_global(bool, UseMembar, false); |
| |
| define_pd_global(bool, PreserveFramePointer, false); |
| |
| // GC Ergo Flags |
| define_pd_global(size_t, CMSYoungGenPerWorker, 16*M); // default max size of CMS young gen, per GC worker thread |
| |
| define_pd_global(uintx, TypeProfileLevel, 111); |
| |
| define_pd_global(bool, CompactStrings, true); |
| |
| define_pd_global(intx, InitArrayShortSize, 8*BytesPerLong); |
| |
| #define ARCH_FLAGS(develop, \ |
| product, \ |
| diagnostic, \ |
| experimental, \ |
| notproduct, \ |
| range, \ |
| constraint, \ |
| writeable) \ |
| \ |
| product(intx, UseVIS, 99, \ |
| "Highest supported VIS instructions set on Sparc") \ |
| range(0, 99) \ |
| \ |
| product(bool, UseCBCond, false, \ |
| "Use compare and branch instruction on SPARC") \ |
| \ |
| product(bool, UseBlockZeroing, false, \ |
| "Use special cpu instructions for block zeroing") \ |
| \ |
| product(intx, BlockZeroingLowLimit, 2048, \ |
| "Minimum size in bytes when block zeroing will be used") \ |
| range(1, max_jint) \ |
| \ |
| product(bool, UseBlockCopy, false, \ |
| "Use special cpu instructions for block copy") \ |
| \ |
| product(intx, BlockCopyLowLimit, 2048, \ |
| "Minimum size in bytes when block copy will be used") \ |
| range(1, max_jint) \ |
| \ |
| product(bool, UseNiagaraInstrs, false, \ |
| "Use Niagara-efficient instruction subset") \ |
| \ |
| develop(bool, UseCASForSwap, false, \ |
| "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ |
| \ |
| product(uintx, ArraycopySrcPrefetchDistance, 0, \ |
| "Distance to prefetch source array in arraycopy") \ |
| constraint(ArraycopySrcPrefetchDistanceConstraintFunc, AfterErgo) \ |
| \ |
| product(uintx, ArraycopyDstPrefetchDistance, 0, \ |
| "Distance to prefetch destination array in arraycopy") \ |
| constraint(ArraycopyDstPrefetchDistanceConstraintFunc, AfterErgo) \ |
| |
| #endif // CPU_SPARC_VM_GLOBALS_SPARC_HPP |