Mercurial > hg > truffle

comparison src/share/vm/ci/ciStreams.cpp @ 6634:7f813940ac35

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
7192406: JSR 292: C2 needs exact return type information for invokedynamic and invokehandle call sites Reviewed-by: kvn
author twisti
date Tue, 28 Aug 2012 15:24:39 -0700
parents 1d7922586cf6
children da91efe96a93
comparison
equal deleted inserted replaced
6633:a5dd6e3ef9f3 6634:7f813940ac35
353 353
354 // ------------------------------------------------------------------ 354 // ------------------------------------------------------------------
355 // ciBytecodeStream::get_method 355 // ciBytecodeStream::get_method
356 // 356 //
357 // If this is a method invocation bytecode, get the invoked method. 357 // If this is a method invocation bytecode, get the invoked method.
358 ciMethod* ciBytecodeStream::get_method(bool& will_link) { 358 // Additionally return the declared signature to get more concrete
359 VM_ENTRY_MARK; 359 // type information if required (Cf. invokedynamic and invokehandle).
360 constantPoolHandle cpool(_method->get_methodOop()->constants()); 360 ciMethod* ciBytecodeStream::get_method(bool& will_link, ciSignature* *declared_signature_result) {
361 ciMethod* m = CURRENT_ENV->get_method_by_index(cpool, get_method_index(), cur_bc(), _holder); 361 VM_ENTRY_MARK;
362 ciEnv* env = CURRENT_ENV;
363 constantPoolHandle cpool(_method->get_methodOop()->constants());
364 ciMethod* m = env->get_method_by_index(cpool, get_method_index(), cur_bc(), _holder);
362 will_link = m->is_loaded(); 365 will_link = m->is_loaded();
366 // Get declared method signature and return it.
367 if (has_optional_appendix()) {
368 const int sig_index = get_method_signature_index();
369 Symbol* sig_sym = cpool->symbol_at(sig_index);
370 ciKlass* pool_holder = env->get_object(cpool->pool_holder())->as_klass();
371 (*declared_signature_result) = new (env->arena()) ciSignature(pool_holder, cpool, env->get_symbol(sig_sym));
372 } else {
373 (*declared_signature_result) = m->signature();
374 }
363 return m; 375 return m;
364 } 376 }
365 377
366 // ------------------------------------------------------------------ 378 // ------------------------------------------------------------------
367 // ciBytecodeStream::has_appendix 379 // ciBytecodeStream::has_appendix
417 constantPoolOop cpool = _method->get_methodOop()->constants(); 429 constantPoolOop cpool = _method->get_methodOop()->constants();
418 return cpool->klass_ref_index_at(get_method_index()); 430 return cpool->klass_ref_index_at(get_method_index());
419 } 431 }
420 432
421 // ------------------------------------------------------------------ 433 // ------------------------------------------------------------------
422 // ciBytecodeStream::get_declared_method_signature
423 //
424 // Get the declared signature of the currently referenced method.
425 //
426 // This is always the same as the signature of the resolved method
427 // itself, except for _invokehandle and _invokedynamic calls.
428 //
429 ciSignature* ciBytecodeStream::get_declared_method_signature() {
430 int sig_index = get_method_signature_index();
431 VM_ENTRY_MARK;
432 ciEnv* env = CURRENT_ENV;
433 constantPoolHandle cpool(_method->get_methodOop()->constants());
434 Symbol* sig_sym = cpool->symbol_at(sig_index);
435 ciKlass* pool_holder = env->get_object(cpool->pool_holder())->as_klass();
436 return new (env->arena()) ciSignature(pool_holder, cpool, env->get_symbol(sig_sym));
437 }
438
439 // ------------------------------------------------------------------
440 // ciBytecodeStream::get_method_signature_index 434 // ciBytecodeStream::get_method_signature_index
441 // 435 //
442 // Get the constant pool index of the signature of the method 436 // Get the constant pool index of the signature of the method
443 // referenced by the current bytecode. Used for generating 437 // referenced by the current bytecode. Used for generating
444 // deoptimization information. 438 // deoptimization information.
445 int ciBytecodeStream::get_method_signature_index() { 439 int ciBytecodeStream::get_method_signature_index() {
446 VM_ENTRY_MARK; 440 GUARDED_VM_ENTRY(
447 constantPoolOop cpool = _holder->get_instanceKlass()->constants(); 441 constantPoolOop cpool = _holder->get_instanceKlass()->constants();
448 int method_index = get_method_index(); 442 const int method_index = get_method_index();
449 int name_and_type_index = cpool->name_and_type_ref_index_at(method_index); 443 const int name_and_type_index = cpool->name_and_type_ref_index_at(method_index);
450 return cpool->signature_ref_index_at(name_and_type_index); 444 return cpool->signature_ref_index_at(name_and_type_index);
445 )
451 } 446 }
452 447
453 // ------------------------------------------------------------------ 448 // ------------------------------------------------------------------
454 // ciBytecodeStream::get_cpcache 449 // ciBytecodeStream::get_cpcache
455 ciCPCache* ciBytecodeStream::get_cpcache() const { 450 ciCPCache* ciBytecodeStream::get_cpcache() const {