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8148481: Devirtualize Klass::vtable

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Move remainder of vtable related methods to Klass

Reviewed-by: cjplummer, coleenp
This commit is contained in:
Mikael Gerdin 2016-01-19 12:07:32 +01:00
parent 211dc93a85
commit 3cda485fe5
12 changed files with 44 additions and 73 deletions
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22
hotspot/src/share/vm/oops/instanceKlass.hpp
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@ -944,11 +944,10 @@ public:
virtual void collect_statistics(KlassSizeStats *sz) const;
#endif
intptr_t* start_of_vtable() const { return (intptr_t*) ((address)this + in_bytes(vtable_start_offset())); }
intptr_t* start_of_itable() const { return start_of_vtable() + vtable_length(); }
int itable_offset_in_words() const { return start_of_itable() - (intptr_t*)this; }
intptr_t* start_of_itable() const { return (intptr_t*)start_of_vtable() + vtable_length(); }
intptr_t* end_of_itable() const { return start_of_itable() + itable_length(); }
intptr_t* end_of_itable() const { return start_of_itable() + itable_length(); }
int itable_offset_in_words() const { return start_of_itable() - (intptr_t*)this; }
address static_field_addr(int offset);
@ -997,9 +996,7 @@ public:
return !layout_helper_needs_slow_path(layout_helper());
}
// Java vtable/itable
klassVtable* vtable() const; // return new klassVtable wrapper
inline Method* method_at_vtable(int index);
// Java itable
klassItable* itable() const; // return new klassItable wrapper
Method* method_at_itable(Klass* holder, int index, TRAPS);
@ -1249,17 +1246,6 @@ public:
void oop_verify_on(oop obj, outputStream* st);
};
inline Method* InstanceKlass::method_at_vtable(int index) {
#ifndef PRODUCT
assert(index >= 0, "valid vtable index");
if (DebugVtables) {
verify_vtable_index(index);
}
#endif
vtableEntry* ve = (vtableEntry*)start_of_vtable();
return ve[index].method();
}
// for adding methods
// UNSET_IDNUM return means no more ids available
inline u2 InstanceKlass::next_method_idnum() {