/* * Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012, 2020 SAP SE. 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 * questions. * #ifndef CPU_PPC_GLOBALS_PPC_HPP#define CPU_PPC_GLOBALS_PPC_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) bool , ImplicitNullChecks, true ); // Generate code for implicit null checks. bool , TrapBasedNullChecks, true );bool , UncommonNullCast, true ); // Uncommon-trap NULLs passed to check cast. #define DEFAULT_STACK_YELLOW_PAGES (2)#define DEFAULT_STACK_RED_PAGES (1)// Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the // stack if compiled for unix and LP64. To pass stack overflow tests we need // 20 shadow pages. #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2))#define DEFAULT_STACK_RESERVED_PAGES (1)#define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES#define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES#define MIN_STACK_SHADOW_PAGES (3 DEBUG_ONLY(+1))#define MIN_STACK_RESERVED_PAGES (0)bool , VMContinuations, AIX_ONLY(false ) NOT_AIX(true ));// Use large code-entry alignment. // Flags for template interpreter. bool , RewriteBytecodes, true );bool , RewriteFrequentPairs, true );bool , PreserveFramePointer, false );bool , CompactStrings, true );// 2x unrolled loop is shorter with more than 9 HeapWords. // Platform dependent flag handling: flags only defined on this platform. #define ARCH_FLAGS(develop, \"Specify the PowerPC family version in use. If not provided, " \"HotSpot will determine it automatically. Host family version " \"is the maximum value allowed (instructions are not emulated)." ) \/* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \ /* indirect call by a direct call. */ \ bool , ReoptimizeCallSequences, true , DIAGNOSTIC, \"Reoptimize code-sequences of calls at runtime." ) \/* Power 8: Configure Data Stream Control Register. */ \ "Power8 or later: Specify encoded value for Data Stream Control " \"Register" ) \"Power8 or later: DPFD (default prefetch depth) value of the " \"Data Stream Control Register." \" 0: hardware default, 1: none, 2-7: min-max, 8: don't touch" ) \"Power8 or later: URG (depth attainment urgency) value of the " \"Data Stream Control Register." \" 0: hardware default, 1: none, 2-7: min-max, 8: don't touch" ) \bool , UseLoadInstructionsForStackBangingPPC64, false , DIAGNOSTIC, \"Use load instructions for stack banging." ) \bool , UseStaticBranchPredictionInCompareAndSwapPPC64, true , DIAGNOSTIC,\"Use static branch prediction hints in CAS operations." ) \bool , UseStaticBranchPredictionForUncommonPathsPPC64, false , DIAGNOSTIC,\"Use static branch prediction hints for uncommon paths." ) \/* special instructions */ \ bool , SuperwordUseVSX, false , \"Use Power8 VSX instructions for superword optimization." ) \bool , UseByteReverseInstructions, false , DIAGNOSTIC, \"Use byte reverse instructions." ) \bool , UseVectorByteReverseInstructionsPPC64, false , DIAGNOSTIC, \"Use Power9 xxbr* vector byte reverse instructions." ) \bool , UseCountLeadingZerosInstructionsPPC64, true , DIAGNOSTIC, \"Use count leading zeros instructions." ) \bool , UseCountTrailingZerosInstructionsPPC64, false , DIAGNOSTIC, \"Use count trailing zeros instructions." ) \bool , UseExtendedLoadAndReserveInstructionsPPC64, false , DIAGNOSTIC,\"Use extended versions of load-and-reserve instructions." ) \bool , UseRotateAndMaskInstructionsPPC64, true , DIAGNOSTIC, \"Use rotate and mask instructions." ) \/* Trap based checks. */ \ /* Trap based checks use the ppc trap instructions to check certain */ \ /* conditions. This instruction raises a SIGTRAP caught by the */ \ /* exception handler of the VM. */ \ bool , UseSIGTRAP, true , \"Allow trap instructions that make use of SIGTRAP. Use this to " \"switch off all optimizations requiring SIGTRAP." ) \bool , TrapBasedICMissChecks, true , DIAGNOSTIC, \"Raise and handle SIGTRAP if inline cache miss detected." ) \bool , TraceTraps, false , DIAGNOSTIC, \"Trace all traps the signal handler handles." ) \bool , ZapMemory, false , \"Write 0x0101... to empty memory. Use this to ease debugging." ) \/* Use Restricted Transactional Memory for lock elision */ \ bool , UseRTMLocking, false , \"Enable RTM lock eliding for inflated locks in compiled code" ) \bool , UseRTMForStackLocks, false , EXPERIMENTAL, \"Enable RTM lock eliding for stack locks in compiled code" ) \bool , UseRTMDeopt, false , \"Perform deopt and recompilation based on RTM abort ratio" ) \int , RTMRetryCount, 5, \"Number of RTM retries on lock abort or busy" ) \int , RTMSpinLoopCount, 100, EXPERIMENTAL, \"Spin count for lock to become free before RTM retry" ) \/* immediate operand limit on ppc */ \ int , RTMAbortThreshold, 1000, EXPERIMENTAL, \"Calculate abort ratio after this number of aborts" ) \int , RTMLockingThreshold, 10000, EXPERIMENTAL, \"Lock count at which to do RTM lock eliding without " \"abort ratio calculation" ) \int , RTMAbortRatio, 50, EXPERIMENTAL, \"Lock abort ratio at which to stop use RTM lock eliding" ) \/* natural range */ \ int , RTMTotalCountIncrRate, 64, EXPERIMENTAL, \"Increment total RTM attempted lock count once every n times" ) \/* immediate operand limit on ppc */ \ "Number of milliseconds to wait before start calculating aborts " \"for RTM locking" ) \bool , UseRTMXendForLockBusy, true , EXPERIMENTAL, \"Use RTM Xend instead of Xabort when lock busy" )// end of ARCH_FLAGS #endif // CPU_PPC_GLOBALS_PPC_HPP quality 100%
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