Quelle globals_aarch64.hpp Sprache: C

/*
* Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 2019, Red Hat Inc. 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_AARCH64_GLOBALS_AARCH64_HPP
#define CPU_AARCH64_GLOBALS_AARCH64_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)

define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
define_pd_global(bool, TrapBasedNullChecks,  false);
define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast

define_pd_global(uintx, CodeCacheSegmentSize,    64 COMPILER1_AND_COMPILER2_PRESENT(+64)); // Tiered compilation has large code-entry alignment.
define_pd_global(intx, CodeEntryAlignment,       64);
define_pd_global(intx, OptoLoopAlignment,        16);

#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(+5))
#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 DEFAULT_STACK_SHADOW_PAGES
#define MIN_STACK_RESERVED_PAGES (0)

define_pd_global(bool, VMContinuations, true);

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, PreserveFramePointer, false);

define_pd_global(uintx, TypeProfileLevel, 111);

define_pd_global(bool, CompactStrings, true);

// Clear short arrays bigger than one word in an arch-specific way
define_pd_global(intx, InitArrayShortSize, BytesPerLong);

#if defined(COMPILER1) || defined(COMPILER2)
define_pd_global(intx, InlineSmallCode,          1000);
#endif

#define ARCH_FLAGS(develop,                                             \
                   product,                                             \
                   notproduct,                                          \
                   range,                                               \
                   constraint)                                          \
                                                                        \
  product(bool, NearCpool, true,                                        \
         "constant pool is close to instructions")                      \
  product(bool, UseNeon, false,                                         \
          "Use Neon for CRC32 computation")                             \
  product(bool, UseCRC32, false,                                        \
          "Use CRC32 instructions for CRC32 computation")               \
  product(bool, UseSIMDForMemoryOps, false,                             \
          "Use SIMD instructions in generated memory move code")        \
  product(bool, UseSIMDForArrayEquals, true,                            \
          "Use SIMD instructions in generated array equals code")       \
  product(bool, UseSimpleArrayEquals, false,                            \
          "Use simplest and shortest implementation for array equals")  \
  product(bool, UseSIMDForBigIntegerShiftIntrinsics, true,              \
          "Use SIMD instructions for left/right shift of BigInteger")   \
  product(bool, AvoidUnalignedAccesses, false,                          \
          "Avoid generating unaligned memory accesses")                 \
  product(bool, UseLSE, false,                                          \
          "Use LSE instructions")                                       \
  product(uint, UseSVE, 0,                                              \
          "Highest supported SVE instruction set version")              \
          range(0, 2)                                                   \
  product(bool, UseBlockZeroing, true,                                  \
          "Use DC ZVA for block zeroing")                               \
  product(intx, BlockZeroingLowLimit, 256,                              \
          "Minimum size in bytes when block zeroing will be used")      \
          range(wordSize, max_jint)                                     \
  product(bool, TraceTraps, false, "Trace all traps the signal handler")\
  product(int, SoftwarePrefetchHintDistance, -1,                        \
          "Use prfm hint with specified distance in compiled code."     \
          "Value -1 means off.")                                        \
          range(-1, 4096)                                               \
  product(ccstr, OnSpinWaitInst, "none", DIAGNOSTIC,                    \
          "The instruction to use to implement "                        \
          "java.lang.Thread.onSpinWait()."                              \
          "Options: none, nop, isb, yield.")                            \
  product(uint, OnSpinWaitInstCount, 1, DIAGNOSTIC,                     \
          "The number of OnSpinWaitInst instructions to generate."      \
          "It cannot be used with OnSpinWaitInst=none.")                \
          range(1, 99)                                                  \
  product(ccstr, UseBranchProtection, "none",                           \
          "Branch Protection to use: none, standard, pac-ret")          \

// end of ARCH_FLAGS

#endif // CPU_AARCH64_GLOBALS_AARCH64_HPP

quality100%

¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.