1 /* 2 * Copyright (c) 2008, 2017, 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 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_ARM_VM_GLOBALS_ARM_HPP 26 #define CPU_ARM_VM_GLOBALS_ARM_HPP 27 28 // 29 // Sets the default values for platform dependent flags used by the runtime system. 30 // (see globals.hpp) 31 // 32 33 define_pd_global(bool, ShareVtableStubs, true); 34 35 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks 36 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast 37 define_pd_global(bool, TrapBasedNullChecks, false); // Not needed 38 39 define_pd_global(uintx, CodeCacheSegmentSize, 64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment. 40 define_pd_global(intx, CodeEntryAlignment, 16); 41 define_pd_global(intx, OptoLoopAlignment, 16); 42 43 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this 44 45 #define DEFAULT_STACK_YELLOW_PAGES (2) 46 #define DEFAULT_STACK_RED_PAGES (1) 47 #define DEFAULT_STACK_SHADOW_PAGES (5 DEBUG_ONLY(+1)) 48 #define DEFAULT_STACK_RESERVED_PAGES (0) 49 50 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES 51 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES 52 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES 53 #define MIN_STACK_RESERVED_PAGES (0) 54 55 define_pd_global(intx, StackYellowPages, DEFAULT_STACK_YELLOW_PAGES); 56 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES); 57 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES); 58 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES); 59 60 define_pd_global(intx, InlineFrequencyCount, 50); 61 #if defined(COMPILER1) || defined(COMPILER2) 62 define_pd_global(intx, InlineSmallCode, 1500); 63 #endif 64 65 define_pd_global(bool, RewriteBytecodes, true); 66 define_pd_global(bool, RewriteFrequentPairs, true); 67 68 define_pd_global(bool, UseMembar, true); 69 70 define_pd_global(bool, PreserveFramePointer, false); 71 72 // GC Ergo Flags 73 define_pd_global(size_t, CMSYoungGenPerWorker, 16*M); // default max size of CMS young gen, per GC worker thread 74 75 define_pd_global(uintx, TypeProfileLevel, 0); 76 77 // No performance work done here yet. 78 define_pd_global(bool, CompactStrings, false); 79 80 define_pd_global(intx, InitArrayShortSize, 8*BytesPerLong); 81 82 define_pd_global(bool, ThreadLocalHandshakes, false); 83 84 #define ARCH_FLAGS(develop, \ 85 product, \ 86 diagnostic, \ 87 experimental, \ 88 notproduct, \ 89 range, \ 90 constraint, \ 91 writeable) 92 #endif // CPU_ARM_VM_GLOBALS_ARM_HPP