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1 /*
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2 * Copyright 2000-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Sets the default values for platform dependent flags used by the server compiler.
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26 // (see c2_globals.hpp). Alpha-sorted.
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27
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28 define_pd_global(bool, BackgroundCompilation, true);
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29 define_pd_global(bool, CICompileOSR, true);
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30 define_pd_global(bool, InlineIntrinsics, false);
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31 define_pd_global(bool, PreferInterpreterNativeStubs, false);
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32 define_pd_global(bool, ProfileTraps, true);
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33 define_pd_global(bool, UseOnStackReplacement, true);
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34 #ifdef CC_INTERP
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35 define_pd_global(bool, ProfileInterpreter, false);
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36 #else
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37 define_pd_global(bool, ProfileInterpreter, true);
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38 #endif // CC_INTERP
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39 define_pd_global(bool, TieredCompilation, false);
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40 #ifdef TIERED
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41 define_pd_global(intx, CompileThreshold, 1000);
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42 define_pd_global(intx, BackEdgeThreshold, 14000);
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43 #else
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44 define_pd_global(intx, CompileThreshold, 10000);
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45 define_pd_global(intx, BackEdgeThreshold, 140000);
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46 #endif // TIERED
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47
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48 define_pd_global(intx, Tier2CompileThreshold, 10000); // unused level
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49 define_pd_global(intx, Tier3CompileThreshold, 10000);
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50 define_pd_global(intx, Tier4CompileThreshold, 40000);
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51
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52 define_pd_global(intx, Tier2BackEdgeThreshold, 100000);
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53 define_pd_global(intx, Tier3BackEdgeThreshold, 100000);
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54 define_pd_global(intx, Tier4BackEdgeThreshold, 100000);
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55
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56 define_pd_global(intx, OnStackReplacePercentage, 140);
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57 define_pd_global(intx, ConditionalMoveLimit, 4);
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58 define_pd_global(intx, FLOATPRESSURE, 52); // C2 on V9 gets to use all the float/double registers
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59 define_pd_global(intx, FreqInlineSize, 175);
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60 define_pd_global(intx, INTPRESSURE, 48); // large register set
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61 define_pd_global(intx, InteriorEntryAlignment, 16); // = CodeEntryAlignment
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62 define_pd_global(intx, NewRatio, 2);
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63 define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
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64 // The default setting 16/16 seems to work best.
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65 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
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66 define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize
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67 define_pd_global(intx, RegisterCostAreaRatio, 12000);
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68 define_pd_global(bool, UseTLAB, true);
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69 define_pd_global(bool, ResizeTLAB, true);
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70 define_pd_global(intx, LoopUnrollLimit, 60); // Design center runs on 1.3.1
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71
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72 // Peephole and CISC spilling both break the graph, and so makes the
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73 // scheduler sick.
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74 define_pd_global(bool, OptoPeephole, false);
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75 define_pd_global(bool, UseCISCSpill, false);
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76 define_pd_global(bool, OptoBundling, false);
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77 define_pd_global(bool, OptoScheduling, true);
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78
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79 #ifdef _LP64
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80 // We need to make sure that all generated code is within
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81 // 2 gigs of the libjvm.so runtime routines so we can use
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82 // the faster "call" instruction rather than the expensive
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83 // sequence of instructions to load a 64 bit pointer.
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84 //
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85 // InitialCodeCacheSize derived from specjbb2000 run.
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86 define_pd_global(intx, InitialCodeCacheSize, 2048*K); // Integral multiple of CodeCacheExpansionSize
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87 define_pd_global(intx, ReservedCodeCacheSize, 48*M);
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88 define_pd_global(intx, CodeCacheExpansionSize, 64*K);
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89
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90 // Ergonomics related flags
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91 define_pd_global(uintx, DefaultMaxRAM, 32*G);
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92 #else
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93 // InitialCodeCacheSize derived from specjbb2000 run.
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94 define_pd_global(intx, InitialCodeCacheSize, 1536*K); // Integral multiple of CodeCacheExpansionSize
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95 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
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96 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
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97 // Ergonomics related flags
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98 define_pd_global(uintx, DefaultMaxRAM, 1*G);
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99 #endif
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100 define_pd_global(uintx,CodeCacheMinBlockLength, 4);
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101
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102 // Heap related flags
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103 define_pd_global(uintx, PermSize, ScaleForWordSize(16*M));
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104 define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M));
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105
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106 // Ergonomics related flags
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107 define_pd_global(bool, NeverActAsServerClassMachine, false);
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