Mercurial > jdk8-mips64-public > hotspot / annotate
src/cpu/ppc/vm/globals_ppc.hpp@41b780b43b74 (annotated)
src/cpu/ppc/vm/globals_ppc.hpp
Wed, 27 Nov 2013 16:16:21 -0800
- author
- goetz
- date
- Wed, 27 Nov 2013 16:16:21 -0800
- changeset 6490
- 41b780b43b74
- parent 6486
- b0133e4187d3
- child 6495
- 67fa91961822
- permissions
- -rw-r--r--
8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn
| goetz@6458 | 1 | /* |
| goetz@6458 | 2 | * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| goetz@6458 | 3 | * Copyright 2012, 2013 SAP AG. All rights reserved. |
| goetz@6458 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| goetz@6458 | 5 | * |
| goetz@6458 | 6 | * This code is free software; you can redistribute it and/or modify it |
| goetz@6458 | 7 | * under the terms of the GNU General Public License version 2 only, as |
| goetz@6458 | 8 | * published by the Free Software Foundation. |
| goetz@6458 | 9 | * |
| goetz@6458 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| goetz@6458 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| goetz@6458 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| goetz@6458 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| goetz@6458 | 14 | * accompanied this code). |
| goetz@6458 | 15 | * |
| goetz@6458 | 16 | * You should have received a copy of the GNU General Public License version |
| goetz@6458 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| goetz@6458 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| goetz@6458 | 19 | * |
| goetz@6458 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| goetz@6458 | 21 | * or visit www.oracle.com if you need additional information or have any |
| goetz@6458 | 22 | * questions. |
| goetz@6458 | 23 | * |
| goetz@6458 | 24 | */ |
| goetz@6458 | 25 | |
| goetz@6458 | 26 | #ifndef CPU_PPC_VM_GLOBALS_PPC_HPP |
| goetz@6458 | 27 | #define CPU_PPC_VM_GLOBALS_PPC_HPP |
| goetz@6458 | 28 | |
| goetz@6458 | 29 | #include "utilities/globalDefinitions.hpp" |
| goetz@6458 | 30 | #include "utilities/macros.hpp" |
| goetz@6458 | 31 | |
| goetz@6458 | 32 | // Sets the default values for platform dependent flags used by the runtime system. |
| goetz@6458 | 33 | // (see globals.hpp) |
| goetz@6458 | 34 | |
| goetz@6458 | 35 | define_pd_global(bool, ConvertSleepToYield, true); |
| goetz@6458 | 36 | define_pd_global(bool, ShareVtableStubs, false); // Improves performance markedly for mtrt and compress. |
| goetz@6458 | 37 | define_pd_global(bool, NeedsDeoptSuspend, false); // Only register window machines need this. |
| goetz@6458 | 38 | |
| goetz@6458 | 39 | |
| goetz@6458 | 40 | define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks. |
| goetz@6490 | 41 | define_pd_global(bool, TrapBasedNullChecks, true); |
| goetz@6458 | 42 | define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast. |
| goetz@6458 | 43 | |
| goetz@6458 | 44 | // Use large code-entry alignment. |
| goetz@6458 | 45 | define_pd_global(intx, CodeEntryAlignment, 128); |
| goetz@6458 | 46 | define_pd_global(intx, OptoLoopAlignment, 16); |
| goetz@6458 | 47 | define_pd_global(intx, InlineFrequencyCount, 100); |
| goetz@6458 | 48 | define_pd_global(intx, InlineSmallCode, 1500); |
| goetz@6458 | 49 | |
| goetz@6458 | 50 | define_pd_global(intx, PreInflateSpin, 10); |
| goetz@6458 | 51 | |
| goetz@6458 | 52 | // Flags for template interpreter. |
| goetz@6458 | 53 | define_pd_global(bool, RewriteBytecodes, true); |
| goetz@6458 | 54 | define_pd_global(bool, RewriteFrequentPairs, true); |
| goetz@6458 | 55 | |
| goetz@6458 | 56 | define_pd_global(bool, UseMembar, false); |
| goetz@6458 | 57 | |
| goetz@6458 | 58 | // GC Ergo Flags |
| goetz@6473 | 59 | define_pd_global(uintx, CMSYoungGenPerWorker, 16*M); // Default max size of CMS young gen, per GC worker thread. |
| goetz@6458 | 60 | |
| goetz@6475 | 61 | define_pd_global(uintx, TypeProfileLevel, 0); |
| goetz@6458 | 62 | |
| goetz@6458 | 63 | // Platform dependent flag handling: flags only defined on this platform. |
| goetz@6458 | 64 | #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \ |
| goetz@6458 | 65 | product(uintx, PowerArchitecturePPC64, 0, \ |
| goetz@6458 | 66 | "CPU Version: x for PowerX. Currently recognizes Power5 to " \ |
| goetz@6458 | 67 | "Power7. Default is 0. CPUs newer than Power7 will be " \ |
| goetz@6458 | 68 | "recognized as Power7.") \ |
| goetz@6458 | 69 | \ |
| goetz@6458 | 70 | /* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \ |
| goetz@6458 | 71 | /* indirect call by a direct call. */ \ |
| goetz@6458 | 72 | product(bool, ReoptimizeCallSequences, true, \ |
| goetz@6458 | 73 | "Reoptimize code-sequences of calls at runtime.") \ |
| goetz@6458 | 74 | \ |
| goetz@6458 | 75 | product(bool, UseLoadInstructionsForStackBangingPPC64, false, \ |
| goetz@6458 | 76 | "Use load instructions for stack banging.") \ |
| goetz@6458 | 77 | \ |
| goetz@6458 | 78 | /* special instructions */ \ |
| goetz@6458 | 79 | \ |
| goetz@6458 | 80 | product(bool, UseCountLeadingZerosInstructionsPPC64, true, \ |
| goetz@6458 | 81 | "Use count leading zeros instructions.") \ |
| goetz@6458 | 82 | \ |
| goetz@6458 | 83 | product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, \ |
| goetz@6458 | 84 | "Use extended versions of load-and-reserve instructions.") \ |
| goetz@6458 | 85 | \ |
| goetz@6458 | 86 | product(bool, UseRotateAndMaskInstructionsPPC64, true, \ |
| goetz@6458 | 87 | "Use rotate and mask instructions.") \ |
| goetz@6458 | 88 | \ |
| goetz@6458 | 89 | product(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, \ |
| goetz@6458 | 90 | "Use static branch prediction hints in CAS operations.") \ |
| goetz@6458 | 91 | \ |
| goetz@6458 | 92 | /* Trap based checks. */ \ |
| goetz@6458 | 93 | /* Trap based checks use the ppc trap instructions to check certain */ \ |
| goetz@6458 | 94 | /* conditions. This instruction raises a SIGTRAP caught by the */ \ |
| goetz@6458 | 95 | /* exception handler of the VM. */ \ |
| goetz@6486 | 96 | product(bool, UseSIGTRAP, true, \ |
| goetz@6458 | 97 | "Allow trap instructions that make use of SIGTRAP. Use this to " \ |
| goetz@6458 | 98 | "switch off all optimizations requiring SIGTRAP.") \ |
| goetz@6458 | 99 | product(bool, TrapBasedICMissChecks, true, \ |
| goetz@6458 | 100 | "Raise and handle SIGTRAP if inline cache miss detected.") \ |
| goetz@6458 | 101 | product(bool, TrapBasedNotEntrantChecks, true, \ |
| goetz@6458 | 102 | "Raise and handle SIGTRAP if calling not entrant or zombie" \ |
| goetz@6458 | 103 | " method.") \ |
| goetz@6458 | 104 | product(bool, TraceTraps, false, "Trace all traps the signal handler" \ |
| goetz@6458 | 105 | "handles.") \ |
| goetz@6458 | 106 | \ |
| goetz@6458 | 107 | product(bool, ZapMemory, false, "Write 0x0101... to empty memory." \ |
| goetz@6458 | 108 | " Use this to ease debugging.") \ |
| goetz@6458 | 109 | |
| goetz@6458 | 110 | |
| goetz@6458 | 111 | |
| goetz@6458 | 112 | #endif // CPU_PPC_VM_GLOBALS_PPC_HPP |
