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// We use a different narrow Klass pointer geometry depending on
// whether we run in standard mode or in compact-object-header-mode.
// Narrow klass pointer bits for an unshifted narrow Klass pointer.
static constexpr int narrow_klass_pointer_bits_noncoh = 32;
- static constexpr int narrow_klass_pointer_bits_coh = 22;
+ static constexpr int narrow_klass_pointer_bits_coh = 19;
// Bit size of a narrowKlass
static int _narrow_klass_pointer_bits;
// The maximum shift values we can use depending on UseCompactObjectHeaders
static int max_shift() { check_init(_max_shift); return _max_shift; }
// Returns the maximum encoding range, given the current geometry (narrow klass bit size and shift)
static size_t max_encoding_range_size() { return nth_bit(narrow_klass_pointer_bits() + max_shift()); }
+ // For use before pre-initialization
+ static constexpr size_t max_klass_range_size_coh = nth_bit(narrow_klass_pointer_bits_coh + max_shift_coh);
+
// Returns the maximum allowed klass range size.
static size_t max_klass_range_size();
// Reserve a range of memory that is to contain Klass strucutures which are referenced by narrow Klass IDs.
// If optimize_for_zero_base is true, the implementation will attempt to reserve optimized for zero-based encoding.
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