250 assert(!Bytecodes::must_rewrite(code), "invokes aren't rewritten");
251 ConstantPool* cpool = method()->constants();
252
253 Bytecode invoke_bc(s.bytecode());
254
255 switch (code) {
256 case Bytecodes::_invokedynamic: {
257 assert(invoke_bc.has_index_u4(code), "sanity");
258 int method_index = invoke_bc.get_index_u4(code);
259 return cpool->invokedynamic_cp_cache_entry_at(method_index)->is_f1_null();
260 }
261 case Bytecodes::_invokevirtual: // fall-through
262 case Bytecodes::_invokeinterface: // fall-through
263 case Bytecodes::_invokespecial: // fall-through
264 case Bytecodes::_invokestatic: {
265 if (cpool->has_preresolution()) {
266 return false; // might have been reached
267 }
268 assert(!invoke_bc.has_index_u4(code), "sanity");
269 int method_index = invoke_bc.get_index_u2_cpcache(code);
270 Method* resolved_method = ConstantPool::method_at_if_loaded(cpool, method_index);
271 return (resolved_method == NULL);
272 }
273 default: ShouldNotReachHere();
274 }
275 } else if (!Bytecodes::must_rewrite(code)) {
276 // might have been reached
277 return false;
278 }
279
280 // the bytecode might not be rewritten if the method is an accessor, etc.
281 address ientry = method->interpreter_entry();
282 if (ientry != entry_for_kind(AbstractInterpreter::zerolocals) &&
283 ientry != entry_for_kind(AbstractInterpreter::zerolocals_synchronized))
284 return false; // interpreter does not run this method!
285
286 // otherwise, we can be sure this bytecode has never been executed
287 return true;
288 }
289
290
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250 assert(!Bytecodes::must_rewrite(code), "invokes aren't rewritten");
251 ConstantPool* cpool = method()->constants();
252
253 Bytecode invoke_bc(s.bytecode());
254
255 switch (code) {
256 case Bytecodes::_invokedynamic: {
257 assert(invoke_bc.has_index_u4(code), "sanity");
258 int method_index = invoke_bc.get_index_u4(code);
259 return cpool->invokedynamic_cp_cache_entry_at(method_index)->is_f1_null();
260 }
261 case Bytecodes::_invokevirtual: // fall-through
262 case Bytecodes::_invokeinterface: // fall-through
263 case Bytecodes::_invokespecial: // fall-through
264 case Bytecodes::_invokestatic: {
265 if (cpool->has_preresolution()) {
266 return false; // might have been reached
267 }
268 assert(!invoke_bc.has_index_u4(code), "sanity");
269 int method_index = invoke_bc.get_index_u2_cpcache(code);
270 constantPoolHandle cp(Thread::current(), cpool);
271 Method* resolved_method = ConstantPool::method_at_if_loaded(cp, method_index);
272 return (resolved_method == NULL);
273 }
274 default: ShouldNotReachHere();
275 }
276 } else if (!Bytecodes::must_rewrite(code)) {
277 // might have been reached
278 return false;
279 }
280
281 // the bytecode might not be rewritten if the method is an accessor, etc.
282 address ientry = method->interpreter_entry();
283 if (ientry != entry_for_kind(AbstractInterpreter::zerolocals) &&
284 ientry != entry_for_kind(AbstractInterpreter::zerolocals_synchronized))
285 return false; // interpreter does not run this method!
286
287 // otherwise, we can be sure this bytecode has never been executed
288 return true;
289 }
290
291
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