Mercurial > hg > truffle
diff src/share/vm/opto/library_call.cpp @ 4739:52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
Summary: Change instanceKlass::_init_state field to u1 type.
Reviewed-by: bdelsart, coleenp, dholmes, phh, never
Contributed-by: Jiangli Zhou <jiangli.zhou@oracle.com>
| author | coleenp |
|---|---|
| date | Tue, 06 Dec 2011 18:28:51 -0500 |
| parents | a92cdbac8b9e |
| children | 22cee0ee8927 |
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--- a/src/share/vm/opto/library_call.cpp Tue Nov 29 14:44:44 2011 -0500 +++ b/src/share/vm/opto/library_call.cpp Tue Dec 06 18:28:51 2011 -0500 @@ -2807,7 +2807,9 @@ // Serializable.class or Object[].class. The runtime will handle it. // But we must make an explicit check for initialization. Node* insp = basic_plus_adr(kls, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)); - Node* inst = make_load(NULL, insp, TypeInt::INT, T_INT); + // Use T_BOOLEAN for instanceKlass::_init_state so the compiler + // can generate code to load it as unsigned byte. + Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); Node* bits = intcon(instanceKlass::fully_initialized); Node* test = _gvn.transform( new (C, 3) SubINode(inst, bits) ); // The 'test' is non-zero if we need to take a slow path.