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25 
26 #ifndef CPU_S390_C2_GLOBALS_S390_HPP
27 #define CPU_S390_C2_GLOBALS_S390_HPP
28 
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/macros.hpp"
31 
32 // Sets the default values for platform dependent flags used by the server compiler.
33 // (see c2_globals.hpp).
34 
35 define_pd_global(bool, BackgroundCompilation,        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,         4);
47 define_pd_global(intx, FLOATPRESSURE,                15);
48 define_pd_global(intx, FreqInlineSize,               175);
49 // 10 prevents spill-split-recycle sanity check in JVM2008.xml.transform.
50 define_pd_global(intx, INTPRESSURE,                  10); // Medium size register set, 6 special purpose regs, 3 SOE regs.
51 define_pd_global(intx, InteriorEntryAlignment,       2);
52 define_pd_global(size_t, NewSizeThreadIncrease,      ScaleForWordSize(4*K));
53 define_pd_global(intx, RegisterCostAreaRatio,        12000);
54 define_pd_global(intx, LoopUnrollLimit,              60);
55 define_pd_global(intx, LoopPercentProfileLimit,      10);
56 define_pd_global(intx, MinJumpTableSize,             18);
57 
58 // Peephole and CISC spilling both break the graph, and so make the
59 // scheduler sick.
60 define_pd_global(bool, OptoPeephole,                 false);
61 define_pd_global(bool, UseCISCSpill,                 true);
62 define_pd_global(bool, OptoBundling,                 false);
63 define_pd_global(bool, OptoScheduling,               false);
64 define_pd_global(bool, OptoRegScheduling,            false);
65 define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
66 // On s390x, we can clear the array with a single instruction,
67 // so don't idealize it.
68 define_pd_global(bool, IdealizeClearArrayNode,       false);
69 
70 // InitialCodeCacheSize derived from specjbb2000 run.
71 define_pd_global(uintx, InitialCodeCacheSize,        2048*K); // Integral multiple of CodeCacheExpansionSize
72 define_pd_global(uintx, ReservedCodeCacheSize,       48*M);
73 define_pd_global(uintx, NonProfiledCodeHeapSize,     21*M);
74 define_pd_global(uintx, ProfiledCodeHeapSize,        22*M);
75 define_pd_global(uintx, NonNMethodCodeHeapSize,      5*M);
76 define_pd_global(uintx, CodeCacheExpansionSize,      64*K);
77 
78 // Ergonomics related flags
79 define_pd_global(uint64_t, MaxRAM,                   128ULL*G);
80 define_pd_global(uintx, CodeCacheMinBlockLength,     4);
81 define_pd_global(uintx, CodeCacheMinimumUseSpace,    400*K);
82 
83 define_pd_global(bool,  TrapBasedRangeChecks,        false); // Not needed on z/Architecture.
84 
85 // Heap related flags
86 define_pd_global(size_t, MetaspaceSize,              ScaleForWordSize(16*M));
87 
88 // Ergonomics related flags
89 define_pd_global(bool, NeverActAsServerClassMachine, false);
90 
91 #endif // CPU_S390_C2_GLOBALS_S390_HPP
92