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src/hotspot/cpu/aarch64/globals_aarch64.hpp

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  58 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES);
  59 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES);
  60 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES);
  61 
  62 define_pd_global(bool, RewriteBytecodes,     true);
  63 define_pd_global(bool, RewriteFrequentPairs, true);
  64 
  65 define_pd_global(bool, PreserveFramePointer, false);
  66 
  67 define_pd_global(uintx, TypeProfileLevel, 111);
  68 
  69 define_pd_global(bool, CompactStrings, true);
  70 
  71 // Clear short arrays bigger than one word in an arch-specific way
  72 define_pd_global(intx, InitArrayShortSize, BytesPerLong);
  73 
  74 #if defined(COMPILER1) || defined(COMPILER2)
  75 define_pd_global(intx, InlineSmallCode,          1000);
  76 #endif
  77 
  78 #define ARCH_FLAGS(develop, \
  79                    product, \
  80                    diagnostic, \
  81                    experimental, \
  82                    notproduct, \
  83                    range, \
  84                    constraint) \
  85                                                                         \
  86   product(bool, NearCpool, true,                                        \
  87          "constant pool is close to instructions")                      \
  88                                                                         \
  89   product(bool, UseBarriersForVolatile, false,                          \
  90           "Use memory barriers to implement volatile accesses")         \
  91   product(bool, UseNeon, false,                                         \
  92           "Use Neon for CRC32 computation")                             \
  93   product(bool, UseCRC32, false,                                        \
  94           "Use CRC32 instructions for CRC32 computation")               \
  95   product(bool, UseSIMDForMemoryOps, false,                             \
  96           "Use SIMD instructions in generated memory move code")        \
  97   product(bool, UseSIMDForArrayEquals, true,                            \
  98           "Use SIMD instructions in generated array equals code")       \
  99   product(bool, UseSimpleArrayEquals, false,                            \
 100           "Use simpliest and shortest implementation for array equals") \
 101   product(bool, AvoidUnalignedAccesses, false,                          \
 102           "Avoid generating unaligned memory accesses")                 \
 103   product(bool, UseLSE, false,                                          \
 104           "Use LSE instructions")                                       \
 105   product(bool, UseBlockZeroing, true,                                  \
 106           "Use DC ZVA for block zeroing")                               \
 107   product(intx, BlockZeroingLowLimit, 256,                              \
 108           "Minimum size in bytes when block zeroing will be used")      \
 109           range(1, max_jint)                                            \
 110   product(bool, TraceTraps, false, "Trace all traps the signal handler")\
 111   product(int, SoftwarePrefetchHintDistance, -1,                        \
 112           "Use prfm hint with specified distance in compiled code."     \
 113           "Value -1 means off.")                                        \
 114           range(-1, 4096)





 115 
 116 #endif // CPU_AARCH64_GLOBALS_AARCH64_HPP


  58 define_pd_global(intx, StackRedPages, DEFAULT_STACK_RED_PAGES);
  59 define_pd_global(intx, StackShadowPages, DEFAULT_STACK_SHADOW_PAGES);
  60 define_pd_global(intx, StackReservedPages, DEFAULT_STACK_RESERVED_PAGES);
  61 
  62 define_pd_global(bool, RewriteBytecodes,     true);
  63 define_pd_global(bool, RewriteFrequentPairs, true);
  64 
  65 define_pd_global(bool, PreserveFramePointer, false);
  66 
  67 define_pd_global(uintx, TypeProfileLevel, 111);
  68 
  69 define_pd_global(bool, CompactStrings, true);
  70 
  71 // Clear short arrays bigger than one word in an arch-specific way
  72 define_pd_global(intx, InitArrayShortSize, BytesPerLong);
  73 
  74 #if defined(COMPILER1) || defined(COMPILER2)
  75 define_pd_global(intx, InlineSmallCode,          1000);
  76 #endif
  77 
  78 #include "runtime/flags/jvmFlag.hpp"
  79 PRODUCT_FLAG(bool,     NearCpool, true, JVMFlag::DEFAULT,
  80                        "constant pool is close to instructions");
  81 
  82 PRODUCT_FLAG(bool,     UseBarriersForVolatile, false, JVMFlag::DEFAULT,
  83                        "Use memory barriers to implement volatile accesses");
  84 
  85 PRODUCT_FLAG(bool,     UseNeon, false, JVMFlag::DEFAULT,
  86                        "Use Neon for CRC32 computation");
  87 
  88 PRODUCT_FLAG(bool,     UseCRC32, false, JVMFlag::DEFAULT,
  89                        "Use CRC32 instructions for CRC32 computation");
  90 
  91 PRODUCT_FLAG(bool,     UseSIMDForMemoryOps, false, JVMFlag::DEFAULT,
  92                        "Use SIMD instructions in generated memory move code");
  93 
  94 PRODUCT_FLAG(bool,     UseSIMDForArrayEquals, true, JVMFlag::DEFAULT,
  95                        "Use SIMD instructions in generated array equals code");
  96 
  97 PRODUCT_FLAG(bool,     UseSimpleArrayEquals, false, JVMFlag::DEFAULT,
  98                        "Use simpliest and shortest implementation for array equals");
  99 
 100 PRODUCT_FLAG(bool,     AvoidUnalignedAccesses, false, JVMFlag::DEFAULT,
 101                        "Avoid generating unaligned memory accesses");
 102 
 103 PRODUCT_FLAG(bool,     UseLSE, false, JVMFlag::DEFAULT,
 104                        "Use LSE instructions");
 105 
 106 PRODUCT_FLAG(bool,     UseBlockZeroing, true, JVMFlag::DEFAULT,
 107                        "Use DC ZVA for block zeroing");
 108 
 109 PRODUCT_FLAG(intx,     BlockZeroingLowLimit, 256, JVMFlag::RANGE,
 110                        "Minimum size in bytes when block zeroing will be used");
 111    FLAG_RANGE(         BlockZeroingLowLimit, 1, max_jint);
 112 
 113 PRODUCT_FLAG(bool,     TraceTraps, false, JVMFlag::DEFAULT,
 114                        "Trace all traps the signal handler");
 115 
 116 PRODUCT_FLAG(int,      SoftwarePrefetchHintDistance, -1, JVMFlag::RANGE,
 117                        "Use prfm hint with specified distance in compiled code."
 118                        "Value -1 means off.");
 119    FLAG_RANGE(         SoftwarePrefetchHintDistance, -1, 4096);
 120 
 121 #endif // CPU_AARCH64_GLOBALS_AARCH64_HPP
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