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jdk-24/hotspot/src/cpu/x86/vm/globals_x86.hpp

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/*
8068977: Remove unused sun.misc.Unsafe prefetch intrinsic support Reviewed-by: kvn, vlivanov
2015-02-10 21:32:05 +01:00
* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
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* 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.
*
6941466: Oracle rebranding changes for Hotspot repositories Change all the Sun copyrights to Oracle copyright Reviewed-by: ohair
2010-05-27 19:08:38 -07:00
* 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.
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*
*/
6989984: Use standard include model for Hospot Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
2010-11-23 13:22:55 -08:00
#ifndef CPU_X86_VM_GLOBALS_X86_HPP
#define CPU_X86_VM_GLOBALS_X86_HPP
#include "utilities/globalDefinitions.hpp"
#include "utilities/macros.hpp"
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// Sets the default values for platform dependent flags used by the runtime system.
// (see globals.hpp)
6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
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define_pd_global(bool, ConvertSleepToYield, true);
define_pd_global(bool, ShareVtableStubs, true);
define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this
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6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
2009-10-28 16:25:51 -04:00
define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
8029015: PPC64 (part 216): opto: trap based null and range checks On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks. Reviewed-by: kvn
2013-11-27 16:16:21 -08:00
define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on x86.
define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast
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// See 4827828 for this change. There is no globals_core_i486.hpp. I can't
// assign a different value for C2 without touching a number of files. Use
// #ifdef to minimize the change as it's late in Mantis. -- FIXME.
// c1 doesn't have this problem because the fix to 4858033 assures us
// the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
// the uep and the vep doesn't get real alignment but just slops on by
// only assured that the entry instruction meets the 5 byte size requirement.
#ifdef COMPILER2
6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
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define_pd_global(intx, CodeEntryAlignment, 32);
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#else
6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
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define_pd_global(intx, CodeEntryAlignment, 16);
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#endif // COMPILER2
6940701: Don't align loops in stubs for Niagara sparc Don't align loops in stubs for Niagara sparc since NOPs are expensive. Reviewed-by: twisti, never
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define_pd_global(intx, OptoLoopAlignment, 16);
6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
2009-10-28 16:25:51 -04:00
define_pd_global(intx, InlineFrequencyCount, 100);
define_pd_global(intx, InlineSmallCode, 1000);
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8015660: Test8009761.java "Failed: init recursive calls: 24. After deopt 25" Windows reserves and only partially commits thread stack. For detecting more thread stack space for execution, Windows installs one-shot page as guard page just before the current commited edge. It will trigger STACK_OVERFLOW_EXCEPTION when lands on last 4 pages of thread stack space. StackYellowPages default value is 2 on Windows (plus 1 page of StackRedPages, 3 pages guarded by hotspot) so the exception happens one page before Yellow pages. Same route executed second time will have one more page brought in, this leads same execution with different stack depth(interpreter mode). We need match Windows settings so the stack overflow exception will not happen before Yellow pages. Reviewed-by: dholmes
2013-06-18 09:08:35 -07:00
define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3));
6887571: Increase default heap config sizes Apply modification of existing server heap size ergo to all collectors except CMS. Reviewed-by: jmasa, ysr, xlu
2009-10-28 16:25:51 -04:00
define_pd_global(intx, StackRedPages, 1);
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#ifdef AMD64
// Very large C++ stack frames using solaris-amd64 optimized builds
// due to lack of optimization caused by C++ compiler bugs
7059899: Stack overflows in Java code cause 64-bit JVMs to exit due to SIGSEGV Increase StackShadowPages to accomodate the JDK changes to increase buffer size in socketWrite Reviewed-by: acorn, phh
2012-02-13 12:30:47 -05:00
define_pd_global(intx, StackShadowPages, NOT_WIN64(20) WIN64_ONLY(6) DEBUG_ONLY(+2));
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#else
7143061: nsk/stress/stack/b4525850 crash VM Reviewed-by: kvn, twisti
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define_pd_global(intx, StackShadowPages, 4 DEBUG_ONLY(+5));
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#endif // AMD64
define_pd_global(bool, RewriteBytecodes, true);
define_pd_global(bool, RewriteFrequentPairs, true);
6989297: Integrate additional portability improvements Reviewed-by: vladidan, dholmes
2010-10-07 15:12:57 -04:00
7089790: integrate bsd-port changes Co-authored-by: Greg Lewis <glewis@eyesbeyond.com> Co-authored-by: Jung-uk Kim <jkim@freebsd.org> Co-authored-by: Christos Zoulas <christos@zoulas.com> Co-authored-by: Landon Fuller <landonf@plausible.coop> Co-authored-by: The FreeBSD Foundation <board@freebsdfoundation.org> Co-authored-by: Michael Franz <mvfranz@gmail.com> Co-authored-by: Roger Hoover <rhoover@apple.com> Co-authored-by: Alexander Strange <astrange@apple.com> Reviewed-by: kvn, twisti, jrose
2011-09-25 16:03:29 -07:00
#ifdef _ALLBSD_SOURCE
define_pd_global(bool, UseMembar, true);
#else
6989297: Integrate additional portability improvements Reviewed-by: vladidan, dholmes
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define_pd_global(bool, UseMembar, false);
7089790: integrate bsd-port changes Co-authored-by: Greg Lewis <glewis@eyesbeyond.com> Co-authored-by: Jung-uk Kim <jkim@freebsd.org> Co-authored-by: Christos Zoulas <christos@zoulas.com> Co-authored-by: Landon Fuller <landonf@plausible.coop> Co-authored-by: The FreeBSD Foundation <board@freebsdfoundation.org> Co-authored-by: Michael Franz <mvfranz@gmail.com> Co-authored-by: Roger Hoover <rhoover@apple.com> Co-authored-by: Alexander Strange <astrange@apple.com> Reviewed-by: kvn, twisti, jrose
2011-09-25 16:03:29 -07:00
#endif
6989984: Use standard include model for Hospot Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
2010-11-23 13:22:55 -08:00
6896099: Integrate CMS heap ergo with default heap sizing ergo 6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m 7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification 7027529: CMS: retire CMSUseOldDefaults flag Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago. Reviewed-by: brutisso, poonam
2011-03-16 10:37:08 -07:00
// GC Ergo Flags
8074459: Flags handling memory sizes should be of type size_t Changed the type to size_t for flags that handles memory sizes Reviewed-by: kbarrett, tschatzl
2015-03-03 18:01:27 +01:00
define_pd_global(size_t, CMSYoungGenPerWorker, 64*M); // default max size of CMS young gen, per GC worker thread
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp Reviewed-by: kvn, dholmes, coleenp
2012-08-27 15:17:17 -07:00
8026251: New type profiling points: parameters to methods X86 interpreter and c1 type profiling for parameters on method entries Reviewed-by: kvn, twisti
2013-10-22 09:51:47 +02:00
define_pd_global(uintx, TypeProfileLevel, 111);
8023657: New type profiling points: arguments to call X86 interpreter and c1 type profiling for arguments at calls Reviewed-by: kvn, twisti
2013-10-09 16:32:21 +02:00
8068945: Use RBP register as proper frame pointer in JIT compiled code on x86 Introduce the PreserveFramePointer flag to control if RBP is used as the frame pointer or as a general purpose register. Reviewed-by: kvn, roland, dlong, enevill, shade
2015-04-27 10:49:43 +02:00
define_pd_global(bool, PreserveFramePointer, false);
8122937: [JEP 245] Validate JVM Command-Line Flag Arguments Validate the arguments to all JVM command-line flags so as to avoid crashes, and ensure that appropriate error messages are displayed when they are invalid. Reviewed-by: ddmitriev, dholmes, kbarrett, drwhite, brutisso, coleenp
2015-06-18 14:39:38 -05:00
#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint) \
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp Reviewed-by: kvn, dholmes, coleenp
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\
develop(bool, IEEEPrecision, true, \
"Enables IEEE precision (for INTEL only)") \
\
product(bool, UseStoreImmI16, true, \
"Use store immediate 16-bits value instruction on x86") \
\
product(intx, UseAVX, 99, \
"Highest supported AVX instructions set on x86/x64") \
\
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 Add intrinsics using new instruction to interpreter, C1, C2, for suitable x86; add test Reviewed-by: kvn, twisti
2013-07-02 20:42:12 -04:00
product(bool, UseCLMUL, false, \
"Control whether CLMUL instructions can be used on x86/x64") \
\
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp Reviewed-by: kvn, dholmes, coleenp
2012-08-27 15:17:17 -07:00
diagnostic(bool, UseIncDec, true, \
"Use INC, DEC instructions on x86") \
\
product(bool, UseNewLongLShift, false, \
"Use optimized bitwise shift left") \
\
product(bool, UseAddressNop, false, \
"Use '0F 1F [addr]' NOP instructions on x86 cpus") \
\
product(bool, UseXmmLoadAndClearUpper, true, \
"Load low part of XMM register and clear upper part") \
\
product(bool, UseXmmRegToRegMoveAll, false, \
"Copy all XMM register bits when moving value between registers") \
\
product(bool, UseXmmI2D, false, \
"Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
\
product(bool, UseXmmI2F, false, \
"Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
\
product(bool, UseUnalignedLoadStores, false, \
"Use SSE2 MOVDQU instruction for Arraycopy") \
\
8005522: use fast-string instructions on x86 for zeroing Use 'rep stosb' instead of 'rep stosq' when fast-string operations are available. Reviewed-by: twisti, roland
2013-01-03 15:09:55 -08:00
product(bool, UseFastStosb, false, \
"Use fast-string operation for zeroing: rep stosb") \
8031320: Use Intel RTM instructions for locks Use RTM for inflated locks and stack locks. Reviewed-by: iveresov, twisti, roland, dcubed
2014-03-20 17:49:27 -07:00
\
/* Use Restricted Transactional Memory for lock eliding */ \
product(bool, UseRTMLocking, false, \
"Enable RTM lock eliding for inflated locks in compiled code") \
\
experimental(bool, UseRTMForStackLocks, false, \
"Enable RTM lock eliding for stack locks in compiled code") \
\
product(bool, UseRTMDeopt, false, \
"Perform deopt and recompilation based on RTM abort ratio") \
\
product(uintx, RTMRetryCount, 5, \
"Number of RTM retries on lock abort or busy") \
\
experimental(intx, RTMSpinLoopCount, 100, \
"Spin count for lock to become free before RTM retry") \
\
experimental(intx, RTMAbortThreshold, 1000, \
"Calculate abort ratio after this number of aborts") \
\
experimental(intx, RTMLockingThreshold, 10000, \
"Lock count at which to do RTM lock eliding without " \
"abort ratio calculation") \
\
experimental(intx, RTMAbortRatio, 50, \
"Lock abort ratio at which to stop use RTM lock eliding") \
\
experimental(intx, RTMTotalCountIncrRate, 64, \
"Increment total RTM attempted lock count once every n times") \
\
experimental(intx, RTMLockingCalculationDelay, 0, \
"Number of milliseconds to wait before start calculating aborts " \
"for RTM locking") \
\
8038939: Some options related to RTM locking optimization works inconsistently Switch UseRTMXendForLockBusy flag ON by default and change code to retry RTM locking on lock busy condition by default. Reviewed-by: roland
2014-04-09 11:18:02 -07:00
experimental(bool, UseRTMXendForLockBusy, true, \
8031320: Use Intel RTM instructions for locks Use RTM for inflated locks and stack locks. Reviewed-by: iveresov, twisti, roland, dcubed
2014-03-20 17:49:27 -07:00
"Use RTM Xend instead of Xabort when lock busy") \
8005522: use fast-string instructions on x86 for zeroing Use 'rep stosb' instead of 'rep stosq' when fast-string operations are available. Reviewed-by: twisti, roland
2013-01-03 15:09:55 -08:00
\
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp Reviewed-by: kvn, dholmes, coleenp
2012-08-27 15:17:17 -07:00
/* assembler */ \
product(bool, Use486InstrsOnly, false, \
"Use 80486 Compliant instruction subset") \
\
product(bool, UseCountLeadingZerosInstruction, false, \
"Use count leading zeros instruction") \
8031321: Support Intel bit manipulation instructions Add support for BMI1 instructions Reviewed-by: kvn, roland
2014-03-12 11:24:26 -07:00
\
product(bool, UseCountTrailingZerosInstruction, false, \
"Use count trailing zeros instruction") \
\
product(bool, UseBMI1Instructions, false, \
8055494: Add C2 x86 intrinsic for BigInteger::multiplyToLen() method Add new C2 intrinsic for BigInteger::multiplyToLen() on x86 in 64-bit VM. Reviewed-by: roland
2014-09-02 12:48:45 -07:00
"Use BMI1 instructions") \
\
product(bool, UseBMI2Instructions, false, \
"Use BMI2 instructions")
6989984: Use standard include model for Hospot Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
2010-11-23 13:22:55 -08:00
#endif // CPU_X86_VM_GLOBALS_X86_HPP
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