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8138659: Speed up InstanceKlass subclass discrimination

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Add _misc_kind field and flags, move around predicates.

Reviewed-by: coleenp, stefank
This commit is contained in:
Kim Barrett 2015-10-09 14:08:15 -04:00
parent aeffdfc249
commit 37125920a7
9 changed files with 88 additions and 40 deletions
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6
hotspot/src/share/vm/oops/instanceKlass.cpp
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@ -145,8 +145,8 @@ InstanceKlass* InstanceKlass::allocate_instance_klass(
} else {
// normal class
ik = new (loader_data, size, THREAD) InstanceKlass(
vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt,
access_flags, is_anonymous);
vtable_len, itable_len, static_field_size, nonstatic_oop_map_size,
InstanceKlass::_misc_kind_other, rt, access_flags, is_anonymous);
}
} else {
// reference klass
@ -195,6 +195,7 @@ InstanceKlass::InstanceKlass(int vtable_len,
int itable_len,
int static_field_size,
int nonstatic_oop_map_size,
unsigned kind,
ReferenceType rt,
AccessFlags access_flags,
bool is_anonymous) {
@ -209,6 +210,7 @@ InstanceKlass::InstanceKlass(int vtable_len,
set_nonstatic_oop_map_size(nonstatic_oop_map_size);
set_access_flags(access_flags);
_misc_flags = 0; // initialize to zero
set_kind(kind);
set_is_anonymous(is_anonymous);
assert(size() == iksize, "wrong size for object");