1 /*
   2  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
   4  * Copyright (c) 2015-2018, Azul Systems, Inc. All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 #ifndef CPU_AARCH32_VM_C2_GLOBALS_AARCH32_HPP
  28 #define CPU_AARCH32_VM_C2_GLOBALS_AARCH32_HPP
  29 
  30 #include "utilities/globalDefinitions.hpp"
  31 #include "utilities/macros.hpp"
  32 
  33 //
  34 // Sets the default values for platform dependent flags used by the server compiler.
  35 // (see c2_globals.hpp).  Alpha-sorted.
  36 
  37 define_pd_global(bool, BackgroundCompilation,        true);
  38 define_pd_global(bool, CICompileOSR,                 true);
  39 define_pd_global(bool, InlineIntrinsics,             false); // TODO FIXME temporary, please enable
  40 define_pd_global(bool, PreferInterpreterNativeStubs, false);
  41 define_pd_global(bool, ProfileTraps,                 true);
  42 define_pd_global(bool, UseOnStackReplacement,        true);
  43 define_pd_global(bool, ProfileInterpreter,           true);
  44 define_pd_global(bool, TieredCompilation,            false);
  45 define_pd_global(intx, CompileThreshold,             10000);
  46 
  47 define_pd_global(intx, OnStackReplacePercentage,     140);
  48 define_pd_global(intx, ConditionalMoveLimit,         4);
  49 // C2 gets to use all the float/double registers
  50 define_pd_global(intx, FLOATPRESSURE,                30);
  51 define_pd_global(intx, FreqInlineSize,               175);
  52 define_pd_global(intx, INTPRESSURE,                  12);
  53 define_pd_global(intx, InteriorEntryAlignment,       32);  // = CodeEntryAlignment
  54 define_pd_global(size_t, NewSizeThreadIncrease,      ScaleForWordSize(4*K));
  55 // The default setting 16/16 seems to work best.
  56 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
  57 //define_pd_global(intx, OptoLoopAlignment,            16);  // = 4*wordSize
  58 define_pd_global(intx, RegisterCostAreaRatio,        16000);
  59 define_pd_global(bool, UseTLAB,                      true);
  60 define_pd_global(bool, ResizeTLAB,                   true);
  61 define_pd_global(intx, LoopUnrollLimit,              60);
  62 define_pd_global(intx, LoopPercentProfileLimit,      10);
  63 define_pd_global(intx, MinJumpTableSize,             16);
  64 
  65 // Peephole and CISC spilling both break the graph, and so makes the
  66 // scheduler sick.
  67 define_pd_global(bool, OptoPeephole,                 false);
  68 define_pd_global(bool, UseCISCSpill,                 false);
  69 define_pd_global(bool, OptoBundling,                 false);
  70 define_pd_global(bool, OptoScheduling,               true);
  71 define_pd_global(bool, OptoRegScheduling,            false);
  72 define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
  73 define_pd_global(bool, IdealizeClearArrayNode,       true);
  74 
  75 // InitialCodeCacheSize derived from specjbb2000 run.
  76 define_pd_global(size_t, InitialCodeCacheSize,       1536*K); // Integral multiple of CodeCacheExpansionSize
  77 define_pd_global(size_t, ReservedCodeCacheSize,      32*M);
  78 define_pd_global(size_t, NonProfiledCodeHeapSize,    13*M);
  79 define_pd_global(size_t, ProfiledCodeHeapSize,       14*M);
  80 define_pd_global(size_t, NonNMethodCodeHeapSize,     5*M );
  81 define_pd_global(size_t, CodeCacheExpansionSize,     32*K);
  82 // Ergonomics related flags
  83 define_pd_global(uint64_t, MaxRAM,                   4ULL*G);
  84 define_pd_global(uintx, CodeCacheMinBlockLength,     4);
  85 define_pd_global(size_t, CodeCacheMinimumUseSpace,   400*K);
  86 
  87 define_pd_global(bool,  TrapBasedRangeChecks,        false); // Not needed
  88 
  89 // Heap related flags
  90 define_pd_global(size_t, MetaspaceSize,              ScaleForWordSize(16*M));
  91 
  92 // Ergonomics related flags
  93 define_pd_global(bool, NeverActAsServerClassMachine, false);
  94 
  95 #endif // CPU_AARCH32_VM_C2_GLOBALS_AARCH32_HPP