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24 
25 #ifndef CPU_X86_C2_GLOBALS_X86_HPP
26 #define CPU_X86_C2_GLOBALS_X86_HPP
27 
28 #include "utilities/globalDefinitions.hpp"
29 #include "utilities/macros.hpp"
30 
31 // Sets the default values for platform dependent flags used by the server compiler.
32 // (see c2_globals.hpp).  Alpha-sorted.
33 define_pd_global(bool, BackgroundCompilation,        true);
34 define_pd_global(bool, UseTLAB,                      true);
35 define_pd_global(bool, ResizeTLAB,                   true);
36 define_pd_global(bool, CICompileOSR,                 true);
37 define_pd_global(bool, InlineIntrinsics,             true);
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,            trueInTiered);
43 define_pd_global(intx, CompileThreshold,             10000);
44 
45 define_pd_global(intx, OnStackReplacePercentage,     140);
46 define_pd_global(intx, ConditionalMoveLimit,         3);
47 define_pd_global(intx, FreqInlineSize,               325);
48 define_pd_global(intx, MinJumpTableSize,             10);
49 define_pd_global(intx, LoopPercentProfileLimit,      30);
50 #ifdef AMD64
51 define_pd_global(intx,  INTPRESSURE,                 13);
52 define_pd_global(intx,  FLOATPRESSURE,               14);
53 define_pd_global(intx,  InteriorEntryAlignment,      16);
54 define_pd_global(size_t, NewSizeThreadIncrease,     ScaleForWordSize(4*K));
55 define_pd_global(intx,  LoopUnrollLimit,             60);
56 // InitialCodeCacheSize derived from specjbb2000 run.
57 define_pd_global(uintx, InitialCodeCacheSize,        2496*K); // Integral multiple of CodeCacheExpansionSize
58 define_pd_global(uintx, CodeCacheExpansionSize,      64*K);
59 
60 // Ergonomics related flags
61 define_pd_global(uint64_t, MaxRAM,                   128ULL*G);
62 #else
63 define_pd_global(intx,  INTPRESSURE,                 6);
64 define_pd_global(intx,  FLOATPRESSURE,               6);
65 define_pd_global(intx,  InteriorEntryAlignment,      4);
66 define_pd_global(size_t, NewSizeThreadIncrease,      4*K);
67 define_pd_global(intx,  LoopUnrollLimit,             50);     // Design center runs on 1.3.1
68 // InitialCodeCacheSize derived from specjbb2000 run.
69 define_pd_global(uintx, InitialCodeCacheSize,        2304*K); // Integral multiple of CodeCacheExpansionSize
70 define_pd_global(uintx, CodeCacheExpansionSize,      32*K);
71 
72 // Ergonomics related flags
73 define_pd_global(uint64_t, MaxRAM,                   4ULL*G);
74 #endif // AMD64
75 define_pd_global(intx, RegisterCostAreaRatio,        16000);
76 
77 // Peephole and CISC spilling both break the graph, and so makes the
78 // scheduler sick.
79 define_pd_global(bool, OptoPeephole,                 true);
80 define_pd_global(bool, UseCISCSpill,                 true);
81 define_pd_global(bool, OptoScheduling,               false);
82 define_pd_global(bool, OptoBundling,                 false);
83 define_pd_global(bool, OptoRegScheduling,            true);
84 define_pd_global(bool, SuperWordLoopUnrollAnalysis,  true);
85 define_pd_global(bool, IdealizeClearArrayNode,       true);
86 
87 define_pd_global(uintx, ReservedCodeCacheSize,       48*M);
88 define_pd_global(uintx, NonProfiledCodeHeapSize,     21*M);
89 define_pd_global(uintx, ProfiledCodeHeapSize,        22*M);
90 define_pd_global(uintx, NonNMethodCodeHeapSize,      5*M );
91 define_pd_global(uintx, CodeCacheMinBlockLength,     6);
92 define_pd_global(uintx, CodeCacheMinimumUseSpace,    400*K);
93 
94 define_pd_global(bool,  TrapBasedRangeChecks,        false); // Not needed on x86.
95 
96 // Heap related flags
97 define_pd_global(size_t, MetaspaceSize,              ScaleForWordSize(16*M));
98 
99 // Ergonomics related flags
100 define_pd_global(bool, NeverActAsServerClassMachine, false);
101 
102 #endif // CPU_X86_C2_GLOBALS_X86_HPP
103