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annotate src/cpu/x86/vm/globals_x86.hpp @ 11080:b800986664f4

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7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 Summary: add intrinsics using new instruction to interpreter, C1, C2, for suitable x86; add test Reviewed-by: kvn, twisti
author drchase
date Tue, 02 Jul 2013 20:42:12 -0400
parents cd54c7e92908
children 14904566a4b2 d13d7aba8c12
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1 /*
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2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef CPU_X86_VM_GLOBALS_X86_HPP
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26 #define CPU_X86_VM_GLOBALS_X86_HPP
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27
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28 #include "utilities/globalDefinitions.hpp"
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29 #include "utilities/macros.hpp"
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30
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31 // Sets the default values for platform dependent flags used by the runtime system.
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32 // (see globals.hpp)
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33
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34 define_pd_global(bool, ConvertSleepToYield, true);
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35 define_pd_global(bool, ShareVtableStubs, true);
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36 define_pd_global(bool, CountInterpCalls, true);
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37 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this
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38
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39 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
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40 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
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41
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42 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
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43 // assign a different value for C2 without touching a number of files. Use
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44 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
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45 // c1 doesn't have this problem because the fix to 4858033 assures us
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46 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
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47 // the uep and the vep doesn't get real alignment but just slops on by
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48 // only assured that the entry instruction meets the 5 byte size requirement.
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49 #ifdef COMPILER2
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50 define_pd_global(intx, CodeEntryAlignment, 32);
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51 #else
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52 define_pd_global(intx, CodeEntryAlignment, 16);
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53 #endif // COMPILER2
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54 define_pd_global(intx, OptoLoopAlignment, 16);
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55 define_pd_global(intx, InlineFrequencyCount, 100);
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56 define_pd_global(intx, InlineSmallCode, 1000);
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57
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58 define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3));
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59 define_pd_global(intx, StackRedPages, 1);
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60 #ifdef AMD64
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61 // Very large C++ stack frames using solaris-amd64 optimized builds
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62 // due to lack of optimization caused by C++ compiler bugs
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63 define_pd_global(intx, StackShadowPages, NOT_WIN64(20) WIN64_ONLY(6) DEBUG_ONLY(+2));
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64 #else
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65 define_pd_global(intx, StackShadowPages, 4 DEBUG_ONLY(+5));
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66 #endif // AMD64
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67
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68 define_pd_global(intx, PreInflateSpin, 10);
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70 define_pd_global(bool, RewriteBytecodes, true);
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71 define_pd_global(bool, RewriteFrequentPairs, true);
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72
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73 #ifdef _ALLBSD_SOURCE
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74 define_pd_global(bool, UseMembar, true);
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75 #else
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76 define_pd_global(bool, UseMembar, false);
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77 #endif
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78
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79 // GC Ergo Flags
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80 define_pd_global(uintx, CMSYoungGenPerWorker, 64*M); // default max size of CMS young gen, per GC worker thread
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82 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \
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83 \
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84 develop(bool, IEEEPrecision, true, \
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85 "Enables IEEE precision (for INTEL only)") \
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86 \
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87 product(intx, FenceInstruction, 0, \
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88 "(Unsafe,Unstable) Experimental") \
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89 \
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90 product(intx, ReadPrefetchInstr, 0, \
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91 "Prefetch instruction to prefetch ahead") \
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92 \
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93 product(bool, UseStoreImmI16, true, \
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94 "Use store immediate 16-bits value instruction on x86") \
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95 \
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96 product(intx, UseAVX, 99, \
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97 "Highest supported AVX instructions set on x86/x64") \
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98 \
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99 product(bool, UseCLMUL, false, \
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100 "Control whether CLMUL instructions can be used on x86/x64") \
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101 \
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102 diagnostic(bool, UseIncDec, true, \
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103 "Use INC, DEC instructions on x86") \
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104 \
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105 product(bool, UseNewLongLShift, false, \
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106 "Use optimized bitwise shift left") \
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107 \
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108 product(bool, UseAddressNop, false, \
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109 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
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110 \
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111 product(bool, UseXmmLoadAndClearUpper, true, \
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112 "Load low part of XMM register and clear upper part") \
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113 \
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114 product(bool, UseXmmRegToRegMoveAll, false, \
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115 "Copy all XMM register bits when moving value between registers") \
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116 \
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117 product(bool, UseXmmI2D, false, \
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118 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
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119 \
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120 product(bool, UseXmmI2F, false, \
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121 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
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122 \
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123 product(bool, UseUnalignedLoadStores, false, \
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124 "Use SSE2 MOVDQU instruction for Arraycopy") \
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125 \
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126 product(bool, UseFastStosb, false, \
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127 "Use fast-string operation for zeroing: rep stosb") \
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128 \
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129 /* assembler */ \
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130 product(bool, Use486InstrsOnly, false, \
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131 "Use 80486 Compliant instruction subset") \
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132 \
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133 product(bool, UseCountLeadingZerosInstruction, false, \
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134 "Use count leading zeros instruction") \
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135
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136 #endif // CPU_X86_VM_GLOBALS_X86_HPP