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24 
25 #ifndef CPU_ARM_GLOBALS_ARM_HPP
26 #define CPU_ARM_GLOBALS_ARM_HPP
27 
28 //
29 // Sets the default values for platform dependent flags used by the runtime system.
30 // (see globals.hpp)
31 //
32 
33 define_pd_global(bool,  ImplicitNullChecks,       true);  // Generate code for implicit null checks
34 define_pd_global(bool,  UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast
35 define_pd_global(bool,  TrapBasedNullChecks,      false); // Not needed
36 
37 define_pd_global(uintx, CodeCacheSegmentSize, 64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment.
38 define_pd_global(intx,  CodeEntryAlignment,       16);
39 define_pd_global(intx,  OptoLoopAlignment,        16);
40 
41 #define DEFAULT_STACK_YELLOW_PAGES (2)
42 #define DEFAULT_STACK_RED_PAGES (1)
43 #define DEFAULT_STACK_SHADOW_PAGES (5 DEBUG_ONLY(+1))
44 #define DEFAULT_STACK_RESERVED_PAGES (0)
45 
46 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
47 #define MIN_STACK_RED_PAGES    DEFAULT_STACK_RED_PAGES
48 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES
49 #define MIN_STACK_RESERVED_PAGES (0)
50 
51 define_pd_global(intx,  StackYellowPages,         DEFAULT_STACK_YELLOW_PAGES);
52 define_pd_global(intx,  StackRedPages,            DEFAULT_STACK_RED_PAGES);
53 define_pd_global(intx,  StackShadowPages,         DEFAULT_STACK_SHADOW_PAGES);
54 define_pd_global(intx,  StackReservedPages,       DEFAULT_STACK_RESERVED_PAGES);
55 
56 define_pd_global(intx,  InlineFrequencyCount,     50);
57 #if  defined(COMPILER1) || defined(COMPILER2)
58 define_pd_global(intx,  InlineSmallCode,          1500);
59 #endif
60 
61 define_pd_global(bool,  RewriteBytecodes,         true);
62 define_pd_global(bool,  RewriteFrequentPairs,     true);
63 
64 define_pd_global(bool,  PreserveFramePointer,     false);
65 
66 // GC Ergo Flags
67 define_pd_global(size_t, CMSYoungGenPerWorker,    16*M);  // default max size of CMS young gen, per GC worker thread
68 
69 define_pd_global(uintx, TypeProfileLevel, 0);
70 
71 // No performance work done here yet.
72 define_pd_global(bool, CompactStrings, false);
73 
74 define_pd_global(intx, InitArrayShortSize, 8*BytesPerLong);
75 
76 define_pd_global(bool, ThreadLocalHandshakes, false);
77 
78 #define ARCH_FLAGS(develop, \
79                    product, \
80                    diagnostic, \
81                    experimental, \
82                    notproduct, \
83                    range, \
84                    constraint, \
85                    writeable)
86 #endif // CPU_ARM_GLOBALS_ARM_HPP
87