1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "ci/ciValueKlass.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "compiler/compileLog.hpp"
29 #include "oops/objArrayKlass.hpp"
30 #include "oops/valueArrayKlass.hpp"
31 #include "opto/addnode.hpp"
32 #include "opto/memnode.hpp"
33 #include "opto/mulnode.hpp"
34 #include "opto/parse.hpp"
35 #include "opto/rootnode.hpp"
36 #include "opto/runtime.hpp"
37 #include "opto/valuetypenode.hpp"
38 #include "runtime/sharedRuntime.hpp"
39
40 //------------------------------make_dtrace_method_entry_exit ----------------
41 // Dtrace -- record entry or exit of a method if compiled with dtrace support
42 void GraphKit::make_dtrace_method_entry_exit(ciMethod* method, bool is_entry) {
43 const TypeFunc *call_type = OptoRuntime::dtrace_method_entry_exit_Type();
44 address call_address = is_entry ? CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry) :
45 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit);
46 const char *call_name = is_entry ? "dtrace_method_entry" : "dtrace_method_exit";
47
48 // Get base of thread-local storage area
49 Node* thread = _gvn.transform( new ThreadLocalNode() );
50
51 // Get method
52 const TypePtr* method_type = TypeMetadataPtr::make(method);
53 Node *method_node = _gvn.transform(ConNode::make(method_type));
54
55 kill_dead_locals();
56
57 // For some reason, this call reads only raw memory.
58 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM;
59 make_runtime_call(RC_LEAF | RC_NARROW_MEM,
60 call_type, call_address,
61 call_name, raw_adr_type,
62 thread, method_node);
63 }
64
65
66 //=============================================================================
67 //------------------------------do_checkcast-----------------------------------
68 void Parse::do_checkcast() {
69 bool will_link;
70 ciKlass* klass = iter().get_klass(will_link);
71
72 Node *obj = peek();
73
74 // Throw uncommon trap if class is not loaded or the value we are casting
75 // _from_ is not loaded, and value is not null. If the value _is_ NULL,
76 // then the checkcast does nothing.
77 const TypeOopPtr *tp = _gvn.type(obj)->isa_oopptr();
78 if (!will_link || (tp && tp->klass() && !tp->klass()->is_loaded())) {
79 if (C->log() != NULL) {
80 if (!will_link) {
81 C->log()->elem("assert_null reason='checkcast' klass='%d'",
82 C->log()->identify(klass));
83 }
84 if (tp && tp->klass() && !tp->klass()->is_loaded()) {
85 // %%% Cannot happen?
86 C->log()->elem("assert_null reason='checkcast source' klass='%d'",
87 C->log()->identify(tp->klass()));
88 }
89 }
90 null_assert(obj);
91 assert( stopped() || _gvn.type(peek())->higher_equal(TypePtr::NULL_PTR), "what's left behind is null" );
92 if (!stopped()) {
93 profile_null_checkcast();
94 }
95 return;
96 }
97
98 Node *res = gen_checkcast(obj, makecon(TypeKlassPtr::make(klass)) );
99
100 // Pop from stack AFTER gen_checkcast because it can uncommon trap and
101 // the debug info has to be correct.
102 pop();
103 push(res);
104 }
105
106
107 //------------------------------do_instanceof----------------------------------
108 void Parse::do_instanceof() {
109 if (stopped()) return;
110 // We would like to return false if class is not loaded, emitting a
111 // dependency, but Java requires instanceof to load its operand.
112
113 // Throw uncommon trap if class is not loaded
114 bool will_link;
115 ciKlass* klass = iter().get_klass(will_link);
116
117 if (!will_link) {
118 if (C->log() != NULL) {
119 C->log()->elem("assert_null reason='instanceof' klass='%d'",
120 C->log()->identify(klass));
121 }
122 null_assert(peek());
123 assert( stopped() || _gvn.type(peek())->higher_equal(TypePtr::NULL_PTR), "what's left behind is null" );
124 if (!stopped()) {
125 // The object is now known to be null.
126 // Shortcut the effect of gen_instanceof and return "false" directly.
127 pop(); // pop the null
128 push(_gvn.intcon(0)); // push false answer
129 }
130 return;
131 }
132
133 // Push the bool result back on stack
134 Node* res = gen_instanceof(peek(), makecon(TypeKlassPtr::make(klass)), true);
135
136 // Pop from stack AFTER gen_instanceof because it can uncommon trap.
137 pop();
138 push(res);
139 }
140
141 //------------------------------array_store_check------------------------------
142 // pull array from stack and check that the store is valid
143 void Parse::array_store_check(bool target_is_valuetypearray) {
144
145 // Shorthand access to array store elements without popping them.
146 Node *obj = peek(0);
147 Node *idx = peek(1);
148 Node *ary = peek(2);
149
150 if (_gvn.type(obj) == TypePtr::NULL_PTR) {
151 // There's never a type check on null values.
152 // This cutout lets us avoid the uncommon_trap(Reason_array_check)
153 // below, which turns into a performance liability if the
154 // gen_checkcast folds up completely.
155 return;
156 }
157
158 // Extract the array klass type
159 int klass_offset = oopDesc::klass_offset_in_bytes();
160 Node* p = basic_plus_adr( ary, ary, klass_offset );
161 // p's type is array-of-OOPS plus klass_offset
162 Node* array_klass = _gvn.transform(LoadKlassNode::make(_gvn, NULL, immutable_memory(), p, TypeInstPtr::KLASS));
163 // Get the array klass
164 const TypeKlassPtr *tak = _gvn.type(array_klass)->is_klassptr();
165
166 // The type of array_klass is usually INexact array-of-oop. Heroically
167 // cast array_klass to EXACT array and uncommon-trap if the cast fails.
168 // Make constant out of the inexact array klass, but use it only if the cast
169 // succeeds.
170 bool always_see_exact_class = false;
171 if (MonomorphicArrayCheck
172 && !too_many_traps(Deoptimization::Reason_array_check)
173 && !tak->klass_is_exact()
174 && tak != TypeKlassPtr::OBJECT) {
175 // Regarding the fourth condition in the if-statement from above:
176 //
177 // If the compiler has determined that the type of array 'ary' (represented
178 // by 'array_klass') is java/lang/Object, the compiler must not assume that
179 // the array 'ary' is monomorphic.
180 //
181 // If 'ary' were of type java/lang/Object, this arraystore would have to fail,
182 // because it is not possible to perform a arraystore into an object that is not
183 // a "proper" array.
184 //
185 // Therefore, let's obtain at runtime the type of 'ary' and check if we can still
186 // successfully perform the store.
187 //
188 // The implementation reasons for the condition are the following:
189 //
190 // java/lang/Object is the superclass of all arrays, but it is represented by the VM
191 // as an InstanceKlass. The checks generated by gen_checkcast() (see below) expect
192 // 'array_klass' to be ObjArrayKlass, which can result in invalid memory accesses.
193 //
194 // See issue JDK-8057622 for details.
195
196 always_see_exact_class = true;
197 // (If no MDO at all, hope for the best, until a trap actually occurs.)
198
199 // Make a constant out of the inexact array klass
200 const TypeKlassPtr *extak = tak->cast_to_exactness(true)->is_klassptr();
201 Node* con = makecon(extak);
202 Node* cmp = _gvn.transform(new CmpPNode( array_klass, con ));
203 Node* bol = _gvn.transform(new BoolNode( cmp, BoolTest::eq ));
204 Node* ctrl= control();
205 { BuildCutout unless(this, bol, PROB_MAX);
206 uncommon_trap(Deoptimization::Reason_array_check,
207 Deoptimization::Action_maybe_recompile,
208 tak->klass());
209 }
210 if (stopped()) { // MUST uncommon-trap?
211 set_control(ctrl); // Then Don't Do It, just fall into the normal checking
212 } else { // Cast array klass to exactness:
213 // Use the exact constant value we know it is.
214 replace_in_map(array_klass,con);
215 CompileLog* log = C->log();
216 if (log != NULL) {
217 log->elem("cast_up reason='monomorphic_array' from='%d' to='(exact)'",
218 log->identify(tak->klass()));
219 }
220 array_klass = con; // Use cast value moving forward
221 }
222 }
223
224 // Come here for polymorphic array klasses
225
226 // Extract the array element class
227 int element_klass_offset = in_bytes(ArrayKlass::element_klass_offset());
228
229 Node *p2 = basic_plus_adr(array_klass, array_klass, element_klass_offset);
230 // We are allowed to use the constant type only if cast succeeded. If always_see_exact_class is true,
231 // we must set a control edge from the IfTrue node created by the uncommon_trap above to the
232 // LoadKlassNode.
233 Node* a_e_klass = _gvn.transform(LoadKlassNode::make(_gvn, always_see_exact_class ? control() : NULL,
234 immutable_memory(), p2, tak));
235
236 if (target_is_valuetypearray) {
237 ciKlass* target_elem_klass = gvn().type(a_e_klass)->is_klassptr()->klass();
238 ciKlass* source_klass = gvn().type(obj)->is_valuetype()->value_klass();
239 if (!target_elem_klass->equals(source_klass)) {
240 Node* slow_ctl = type_check(a_e_klass, TypeKlassPtr::make(source_klass), 1.0);
241 {
242 PreserveJVMState pjvms(this);
243 set_control(slow_ctl);
244 builtin_throw(Deoptimization::Reason_class_check);
245 }
246 }
247 } else {
248 // Check (the hard way) and throw if not a subklass.
249 // Result is ignored, we just need the CFG effects.
250 gen_checkcast(obj, a_e_klass);
251 }
252 }
253
254
255 void Parse::emit_guard_for_new(ciInstanceKlass* klass) {
256 // Emit guarded new
257 // if (klass->_init_thread != current_thread ||
258 // klass->_init_state != being_initialized)
259 // uncommon_trap
260 Node* cur_thread = _gvn.transform( new ThreadLocalNode() );
261 Node* merge = new RegionNode(3);
262 _gvn.set_type(merge, Type::CONTROL);
263 Node* kls = makecon(TypeKlassPtr::make(klass));
264
265 Node* init_thread_offset = _gvn.MakeConX(in_bytes(InstanceKlass::init_thread_offset()));
266 Node* adr_node = basic_plus_adr(kls, kls, init_thread_offset);
267 Node* init_thread = make_load(NULL, adr_node, TypeRawPtr::BOTTOM, T_ADDRESS, MemNode::unordered);
268 Node *tst = Bool( CmpP( init_thread, cur_thread), BoolTest::eq);
269 IfNode* iff = create_and_map_if(control(), tst, PROB_ALWAYS, COUNT_UNKNOWN);
270 set_control(IfTrue(iff));
271 merge->set_req(1, IfFalse(iff));
272
273 Node* init_state_offset = _gvn.MakeConX(in_bytes(InstanceKlass::init_state_offset()));
274 adr_node = basic_plus_adr(kls, kls, init_state_offset);
275 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler
276 // can generate code to load it as unsigned byte.
277 Node* init_state = make_load(NULL, adr_node, TypeInt::UBYTE, T_BOOLEAN, MemNode::unordered);
278 Node* being_init = _gvn.intcon(InstanceKlass::being_initialized);
279 tst = Bool( CmpI( init_state, being_init), BoolTest::eq);
280 iff = create_and_map_if(control(), tst, PROB_ALWAYS, COUNT_UNKNOWN);
281 set_control(IfTrue(iff));
282 merge->set_req(2, IfFalse(iff));
283
284 PreserveJVMState pjvms(this);
285 record_for_igvn(merge);
286 set_control(merge);
287
288 uncommon_trap(Deoptimization::Reason_uninitialized,
289 Deoptimization::Action_reinterpret,
290 klass);
291 }
292
293
294 //------------------------------do_new-----------------------------------------
295 void Parse::do_new() {
296 kill_dead_locals();
297
298 bool will_link;
299 ciInstanceKlass* klass = iter().get_klass(will_link)->as_instance_klass();
300 assert(will_link, "_new: typeflow responsibility");
301
302 // Should initialize, or throw an InstantiationError?
303 if (!klass->is_initialized() && !klass->is_being_initialized() ||
304 klass->is_abstract() || klass->is_interface() ||
305 klass->name() == ciSymbol::java_lang_Class() ||
306 iter().is_unresolved_klass()) {
307 uncommon_trap(Deoptimization::Reason_uninitialized,
308 Deoptimization::Action_reinterpret,
309 klass);
310 return;
311 }
312 if (klass->is_being_initialized()) {
313 emit_guard_for_new(klass);
314 }
315
316 Node* kls = makecon(TypeKlassPtr::make(klass));
317 Node* obj = new_instance(kls);
318
319 // Push resultant oop onto stack
320 push(obj);
321
322 // Keep track of whether opportunities exist for StringBuilder
323 // optimizations.
324 if (OptimizeStringConcat &&
325 (klass == C->env()->StringBuilder_klass() ||
326 klass == C->env()->StringBuffer_klass())) {
327 C->set_has_stringbuilder(true);
328 }
329
330 // Keep track of boxed values for EliminateAutoBox optimizations.
331 if (C->eliminate_boxing() && klass->is_box_klass()) {
332 C->set_has_boxed_value(true);
333 }
334 }
335
336 //------------------------------do_vdefault-------------------------------------
337 void Parse::do_vdefault() {
338 // Fixme additional checks needed?
339 bool will_link;
340 ciValueKlass* vk = iter().get_klass(will_link)->as_value_klass();
341 assert(will_link, "vdefault: typeflow responsibility");
342
343 // Create a new ValueTypeNode
344 Node* vt = ValueTypeNode::make_default(_gvn, vk);
345
346 push(_gvn.transform(vt));
347 }
348
349 //------------------------------do_vwithfield-----------------------------------
350 void Parse::do_vwithfield() {
351 // Fixme additional checks needed?
352 bool will_link;
353 ciField* field = iter().get_field(will_link);
354 assert(will_link, "vdefault: typeflow responsibility");
355 BasicType bt = field->layout_type();
356 Node* val = type2size[bt] == 1 ? pop() : pop_pair();
357 Node* vt = pop();
358 assert(vt->is_ValueType(), "value type expected here");
359
360 ValueTypeNode* new_vt = vt->clone()->as_ValueType();
361 new_vt->set_oop(_gvn.zerocon(T_VALUETYPE));
362 int offset = field->offset();
363 uint i = 0;
364 for (; i < new_vt->field_count() && new_vt->field_offset(i) != offset; i++);
365 assert(i < new_vt->field_count(), "where's the field");
366 new_vt->set_field_value(i, val);
367
368 push(_gvn.transform(new_vt));
369 }
370
371 #ifndef PRODUCT
372 //------------------------------dump_map_adr_mem-------------------------------
373 // Debug dump of the mapping from address types to MergeMemNode indices.
374 void Parse::dump_map_adr_mem() const {
375 tty->print_cr("--- Mapping from address types to memory Nodes ---");
376 MergeMemNode *mem = map() == NULL ? NULL : (map()->memory()->is_MergeMem() ?
377 map()->memory()->as_MergeMem() : NULL);
378 for (uint i = 0; i < (uint)C->num_alias_types(); i++) {
379 C->alias_type(i)->print_on(tty);
380 tty->print("\t");
381 // Node mapping, if any
382 if (mem && i < mem->req() && mem->in(i) && mem->in(i) != mem->empty_memory()) {
383 mem->in(i)->dump();
384 } else {
385 tty->cr();
386 }
387 }
388 }
389
390 #endif
391
392
393 //=============================================================================
394 //
395 // parser methods for profiling
396
397
398 //----------------------test_counter_against_threshold ------------------------
399 void Parse::test_counter_against_threshold(Node* cnt, int limit) {
400 // Test the counter against the limit and uncommon trap if greater.
401
402 // This code is largely copied from the range check code in
403 // array_addressing()
404
405 // Test invocation count vs threshold
406 Node *threshold = makecon(TypeInt::make(limit));
407 Node *chk = _gvn.transform( new CmpUNode( cnt, threshold) );
408 BoolTest::mask btest = BoolTest::lt;
409 Node *tst = _gvn.transform( new BoolNode( chk, btest) );
410 // Branch to failure if threshold exceeded
411 { BuildCutout unless(this, tst, PROB_ALWAYS);
412 uncommon_trap(Deoptimization::Reason_age,
413 Deoptimization::Action_maybe_recompile);
414 }
415 }
416
417 //----------------------increment_and_test_invocation_counter-------------------
418 void Parse::increment_and_test_invocation_counter(int limit) {
419 if (!count_invocations()) return;
420
421 // Get the Method* node.
422 ciMethod* m = method();
423 MethodCounters* counters_adr = m->ensure_method_counters();
424 if (counters_adr == NULL) {
425 C->record_failure("method counters allocation failed");
426 return;
427 }
428
429 Node* ctrl = control();
430 const TypePtr* adr_type = TypeRawPtr::make((address) counters_adr);
431 Node *counters_node = makecon(adr_type);
432 Node* adr_iic_node = basic_plus_adr(counters_node, counters_node,
433 MethodCounters::interpreter_invocation_counter_offset_in_bytes());
434 Node* cnt = make_load(ctrl, adr_iic_node, TypeInt::INT, T_INT, adr_type, MemNode::unordered);
435
436 test_counter_against_threshold(cnt, limit);
437
438 // Add one to the counter and store
439 Node* incr = _gvn.transform(new AddINode(cnt, _gvn.intcon(1)));
440 store_to_memory(ctrl, adr_iic_node, incr, T_INT, adr_type, MemNode::unordered);
441 }
442
443 //----------------------------method_data_addressing---------------------------
444 Node* Parse::method_data_addressing(ciMethodData* md, ciProfileData* data, ByteSize counter_offset, Node* idx, uint stride) {
445 // Get offset within MethodData* of the data array
446 ByteSize data_offset = MethodData::data_offset();
447
448 // Get cell offset of the ProfileData within data array
449 int cell_offset = md->dp_to_di(data->dp());
450
451 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
452 int offset = in_bytes(data_offset) + cell_offset + in_bytes(counter_offset);
453
454 const TypePtr* adr_type = TypeMetadataPtr::make(md);
455 Node* mdo = makecon(adr_type);
456 Node* ptr = basic_plus_adr(mdo, mdo, offset);
457
458 if (stride != 0) {
459 Node* str = _gvn.MakeConX(stride);
460 Node* scale = _gvn.transform( new MulXNode( idx, str ) );
461 ptr = _gvn.transform( new AddPNode( mdo, ptr, scale ) );
462 }
463
464 return ptr;
465 }
466
467 //--------------------------increment_md_counter_at----------------------------
468 void Parse::increment_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize counter_offset, Node* idx, uint stride) {
469 Node* adr_node = method_data_addressing(md, data, counter_offset, idx, stride);
470
471 const TypePtr* adr_type = _gvn.type(adr_node)->is_ptr();
472 Node* cnt = make_load(NULL, adr_node, TypeInt::INT, T_INT, adr_type, MemNode::unordered);
473 Node* incr = _gvn.transform(new AddINode(cnt, _gvn.intcon(DataLayout::counter_increment)));
474 store_to_memory(NULL, adr_node, incr, T_INT, adr_type, MemNode::unordered);
475 }
476
477 //--------------------------test_for_osr_md_counter_at-------------------------
478 void Parse::test_for_osr_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize counter_offset, int limit) {
479 Node* adr_node = method_data_addressing(md, data, counter_offset);
480
481 const TypePtr* adr_type = _gvn.type(adr_node)->is_ptr();
482 Node* cnt = make_load(NULL, adr_node, TypeInt::INT, T_INT, adr_type, MemNode::unordered);
483
484 test_counter_against_threshold(cnt, limit);
485 }
486
487 //-------------------------------set_md_flag_at--------------------------------
488 void Parse::set_md_flag_at(ciMethodData* md, ciProfileData* data, int flag_constant) {
489 Node* adr_node = method_data_addressing(md, data, DataLayout::flags_offset());
490
491 const TypePtr* adr_type = _gvn.type(adr_node)->is_ptr();
492 Node* flags = make_load(NULL, adr_node, TypeInt::BYTE, T_BYTE, adr_type, MemNode::unordered);
493 Node* incr = _gvn.transform(new OrINode(flags, _gvn.intcon(flag_constant)));
494 store_to_memory(NULL, adr_node, incr, T_BYTE, adr_type, MemNode::unordered);
495 }
496
497 //----------------------------profile_taken_branch-----------------------------
498 void Parse::profile_taken_branch(int target_bci, bool force_update) {
499 // This is a potential osr_site if we have a backedge.
500 int cur_bci = bci();
501 bool osr_site =
502 (target_bci <= cur_bci) && count_invocations() && UseOnStackReplacement;
503
504 // If we are going to OSR, restart at the target bytecode.
505 set_bci(target_bci);
506
507 // To do: factor out the the limit calculations below. These duplicate
508 // the similar limit calculations in the interpreter.
509
510 if (method_data_update() || force_update) {
511 ciMethodData* md = method()->method_data();
512 assert(md != NULL, "expected valid ciMethodData");
513 ciProfileData* data = md->bci_to_data(cur_bci);
514 assert(data->is_JumpData(), "need JumpData for taken branch");
515 increment_md_counter_at(md, data, JumpData::taken_offset());
516 }
517
518 // In the new tiered system this is all we need to do. In the old
519 // (c2 based) tiered sytem we must do the code below.
520 #ifndef TIERED
521 if (method_data_update()) {
522 ciMethodData* md = method()->method_data();
523 if (osr_site) {
524 ciProfileData* data = md->bci_to_data(cur_bci);
525 int limit = (CompileThreshold
526 * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100;
527 test_for_osr_md_counter_at(md, data, JumpData::taken_offset(), limit);
528 }
529 } else {
530 // With method data update off, use the invocation counter to trigger an
531 // OSR compilation, as done in the interpreter.
532 if (osr_site) {
533 int limit = (CompileThreshold * OnStackReplacePercentage) / 100;
534 increment_and_test_invocation_counter(limit);
535 }
536 }
537 #endif // TIERED
538
539 // Restore the original bytecode.
540 set_bci(cur_bci);
541 }
542
543 //--------------------------profile_not_taken_branch---------------------------
544 void Parse::profile_not_taken_branch(bool force_update) {
545
546 if (method_data_update() || force_update) {
547 ciMethodData* md = method()->method_data();
548 assert(md != NULL, "expected valid ciMethodData");
549 ciProfileData* data = md->bci_to_data(bci());
550 assert(data->is_BranchData(), "need BranchData for not taken branch");
551 increment_md_counter_at(md, data, BranchData::not_taken_offset());
552 }
553
554 }
555
556 //---------------------------------profile_call--------------------------------
557 void Parse::profile_call(Node* receiver) {
558 if (!method_data_update()) return;
559
560 switch (bc()) {
561 case Bytecodes::_invokevirtual:
562 case Bytecodes::_invokeinterface:
563 profile_receiver_type(receiver);
564 break;
565 case Bytecodes::_invokestatic:
566 case Bytecodes::_invokedynamic:
567 case Bytecodes::_invokespecial:
568 profile_generic_call();
569 break;
570 default: fatal("unexpected call bytecode");
571 }
572 }
573
574 //------------------------------profile_generic_call---------------------------
575 void Parse::profile_generic_call() {
576 assert(method_data_update(), "must be generating profile code");
577
578 ciMethodData* md = method()->method_data();
579 assert(md != NULL, "expected valid ciMethodData");
580 ciProfileData* data = md->bci_to_data(bci());
581 assert(data->is_CounterData(), "need CounterData for not taken branch");
582 increment_md_counter_at(md, data, CounterData::count_offset());
583 }
584
585 //-----------------------------profile_receiver_type---------------------------
586 void Parse::profile_receiver_type(Node* receiver) {
587 assert(method_data_update(), "must be generating profile code");
588
589 ciMethodData* md = method()->method_data();
590 assert(md != NULL, "expected valid ciMethodData");
591 ciProfileData* data = md->bci_to_data(bci());
592 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData here");
593
594 // Skip if we aren't tracking receivers
595 if (TypeProfileWidth < 1) {
596 increment_md_counter_at(md, data, CounterData::count_offset());
597 return;
598 }
599 ciReceiverTypeData* rdata = (ciReceiverTypeData*)data->as_ReceiverTypeData();
600
601 Node* method_data = method_data_addressing(md, rdata, in_ByteSize(0));
602
603 // Using an adr_type of TypePtr::BOTTOM to work around anti-dep problems.
604 // A better solution might be to use TypeRawPtr::BOTTOM with RC_NARROW_MEM.
605 make_runtime_call(RC_LEAF, OptoRuntime::profile_receiver_type_Type(),
606 CAST_FROM_FN_PTR(address,
607 OptoRuntime::profile_receiver_type_C),
608 "profile_receiver_type_C",
609 TypePtr::BOTTOM,
610 method_data, receiver);
611 }
612
613 //---------------------------------profile_ret---------------------------------
614 void Parse::profile_ret(int target_bci) {
615 if (!method_data_update()) return;
616
617 // Skip if we aren't tracking ret targets
618 if (TypeProfileWidth < 1) return;
619
620 ciMethodData* md = method()->method_data();
621 assert(md != NULL, "expected valid ciMethodData");
622 ciProfileData* data = md->bci_to_data(bci());
623 assert(data->is_RetData(), "need RetData for ret");
624 ciRetData* ret_data = (ciRetData*)data->as_RetData();
625
626 // Look for the target_bci is already in the table
627 uint row;
628 bool table_full = true;
629 for (row = 0; row < ret_data->row_limit(); row++) {
630 int key = ret_data->bci(row);
631 table_full &= (key != RetData::no_bci);
632 if (key == target_bci) break;
633 }
634
635 if (row >= ret_data->row_limit()) {
636 // The target_bci was not found in the table.
637 if (!table_full) {
638 // XXX: Make slow call to update RetData
639 }
640 return;
641 }
642
643 // the target_bci is already in the table
644 increment_md_counter_at(md, data, RetData::bci_count_offset(row));
645 }
646
647 //--------------------------profile_null_checkcast----------------------------
648 void Parse::profile_null_checkcast() {
649 // Set the null-seen flag, done in conjunction with the usual null check. We
650 // never unset the flag, so this is a one-way switch.
651 if (!method_data_update()) return;
652
653 ciMethodData* md = method()->method_data();
654 assert(md != NULL, "expected valid ciMethodData");
655 ciProfileData* data = md->bci_to_data(bci());
656 assert(data->is_BitData(), "need BitData for checkcast");
657 set_md_flag_at(md, data, BitData::null_seen_byte_constant());
658 }
659
660 //-----------------------------profile_switch_case-----------------------------
661 void Parse::profile_switch_case(int table_index) {
662 if (!method_data_update()) return;
663
664 ciMethodData* md = method()->method_data();
665 assert(md != NULL, "expected valid ciMethodData");
666
667 ciProfileData* data = md->bci_to_data(bci());
668 assert(data->is_MultiBranchData(), "need MultiBranchData for switch case");
669 if (table_index >= 0) {
670 increment_md_counter_at(md, data, MultiBranchData::case_count_offset(table_index));
671 } else {
672 increment_md_counter_at(md, data, MultiBranchData::default_count_offset());
673 }
674 }