1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  24 
  25 #ifndef CPU_ARM_C2_GLOBALS_ARM_HPP
  26 #define CPU_ARM_C2_GLOBALS_ARM_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 //
  32 // Sets the default values for platform dependent flags used by the server compiler.
  33 // (see c2_globals.hpp).  Alpha-sorted.
  34 
  35 define_pd_global(bool, BackgroundCompilation,        true);
  36 define_pd_global(bool, CICompileOSR,                 true);
  37 define_pd_global(bool, InlineIntrinsics,             false);
  38 define_pd_global(bool, PreferInterpreterNativeStubs, false);
  39 define_pd_global(bool, ProfileTraps,                 true);
  40 define_pd_global(bool, UseOnStackReplacement,        true);
  41 define_pd_global(bool, ProfileInterpreter,           true);
  42 define_pd_global(bool, TieredCompilation,            false);
  43 define_pd_global(intx, CompileThreshold,             10000);
  44 
  45 define_pd_global(intx, OnStackReplacePercentage,     140);
  46 define_pd_global(intx, ConditionalMoveLimit,         4);
  47 // C2 gets to use all the float/double registers
  48 define_pd_global(intx, FLOATPRESSURE,                30);
  49 define_pd_global(intx, FreqInlineSize,               175);
  50 define_pd_global(intx, INTPRESSURE,                  12);
  51 define_pd_global(intx, InteriorEntryAlignment,       16);  // = CodeEntryAlignment
  52 define_pd_global(size_t, NewSizeThreadIncrease,      ScaleForWordSize(4*K));
  53 // The default setting 16/16 seems to work best.
  54 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
  55 //define_pd_global(intx, OptoLoopAlignment,            16);  // = 4*wordSize
  56 define_pd_global(intx, RegisterCostAreaRatio,        16000);
  57 define_pd_global(bool, UseTLAB,                      true);
  58 define_pd_global(bool, ResizeTLAB,                   true);
  59 define_pd_global(intx, LoopUnrollLimit,              60); // Design center runs on 1.3.1
  60 define_pd_global(intx, LoopPercentProfileLimit,      10);
  61 define_pd_global(intx, MinJumpTableSize,             16);
  62 
  63 // Peephole and CISC spilling both break the graph, and so makes the
  64 // scheduler sick.
  65 define_pd_global(bool, OptoPeephole,                 false);
  66 define_pd_global(bool, UseCISCSpill,                 false);
  67 define_pd_global(bool, OptoBundling,                 false);
  68 define_pd_global(bool, OptoScheduling,               true);
  69 define_pd_global(bool, OptoRegScheduling,            false);
  70 define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
  71 define_pd_global(bool, IdealizeClearArrayNode,       true);
  72 
  73 #ifdef _LP64
  74 // We need to make sure that all generated code is within
  75 // 2 gigs of the libjvm.so runtime routines so we can use
  76 // the faster "call" instruction rather than the expensive
  77 // sequence of instructions to load a 64 bit pointer.
  78 //
  79 // InitialCodeCacheSize derived from specjbb2000 run.
  80 define_pd_global(size_t, InitialCodeCacheSize,       2048*K); // Integral multiple of CodeCacheExpansionSize
  81 define_pd_global(size_t, ReservedCodeCacheSize,      48*M);
  82 define_pd_global(size_t, NonProfiledCodeHeapSize,    21*M);
  83 define_pd_global(size_t, ProfiledCodeHeapSize,       22*M);
  84 define_pd_global(size_t, NonNMethodCodeHeapSize,     5*M );
  85 define_pd_global(size_t, CodeCacheExpansionSize,     64*K);
  86 
  87 // Ergonomics related flags
  88 define_pd_global(uint64_t, MaxRAM,                   128ULL*G);
  89 #else
  90 // InitialCodeCacheSize derived from specjbb2000 run.
  91 define_pd_global(size_t, InitialCodeCacheSize,       1536*K); // Integral multiple of CodeCacheExpansionSize
  92 define_pd_global(size_t, ReservedCodeCacheSize,      32*M);
  93 define_pd_global(size_t, NonProfiledCodeHeapSize,    13*M);
  94 define_pd_global(size_t, ProfiledCodeHeapSize,       14*M);
  95 define_pd_global(size_t, NonNMethodCodeHeapSize,     5*M );
  96 define_pd_global(size_t, CodeCacheExpansionSize,     32*K);
  97 // Ergonomics related flags
  98 define_pd_global(uint64_t, MaxRAM,                   4ULL*G);
  99 #endif
 100 define_pd_global(uintx, CodeCacheMinBlockLength,     4);
 101 define_pd_global(size_t, CodeCacheMinimumUseSpace,   400*K);
 102 
 103 define_pd_global(bool,  TrapBasedRangeChecks,        false); // Not needed
 104 
 105 // Heap related flags
 106 define_pd_global(size_t, MetaspaceSize,              ScaleForWordSize(16*M));
 107 
 108 // Ergonomics related flags
 109 define_pd_global(bool, NeverActAsServerClassMachine, false);
 110 
 111 #endif // CPU_ARM_C2_GLOBALS_ARM_HPP