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 "ci/ciCallSite.hpp"
26 #include "ci/ciMethodHandle.hpp"
27 #include "ci/ciSymbols.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #include "logging/log.hpp"
33 #include "logging/logLevel.hpp"
34 #include "logging/logMessage.hpp"
35 #include "logging/logStream.hpp"
36 #include "opto/addnode.hpp"
37 #include "opto/callGenerator.hpp"
38 #include "opto/castnode.hpp"
39 #include "opto/cfgnode.hpp"
40 #include "opto/mulnode.hpp"
41 #include "opto/parse.hpp"
42 #include "opto/rootnode.hpp"
43 #include "opto/runtime.hpp"
44 #include "opto/subnode.hpp"
45 #include "prims/methodHandles.hpp"
46 #include "runtime/sharedRuntime.hpp"
47 #include "utilities/macros.hpp"
48 #if INCLUDE_JFR
49 #include "jfr/jfr.hpp"
50 #endif
51
52 static void print_trace_type_profile(outputStream* out, int depth, ciKlass* prof_klass, int site_count, int receiver_count,
53 bool with_deco) {
54 if (with_deco) {
55 CompileTask::print_inline_indent(depth, out);
56 }
57 out->print(" \\-> TypeProfile (%d/%d counts) = ", receiver_count, site_count);
58 prof_klass->name()->print_symbol_on(out);
59 if (with_deco) {
69 if (!C->print_inlining()) {
70 if (!PrintOpto && !PrintCompilation) {
71 method->print_short_name();
72 tty->cr();
73 }
74 CompileTask::print_inlining_tty(prof_method, depth, bci, InliningResult::SUCCESS);
75 print_trace_type_profile(tty, depth, prof_klass, site_count, receiver_count, true);
76 } else {
77 auto stream = C->inline_printer()->record(method, jvms, InliningResult::SUCCESS);
78 print_trace_type_profile(stream, depth, prof_klass, site_count, receiver_count, false);
79 }
80 }
81
82 LogTarget(Debug, jit, inlining) lt;
83 if (lt.is_enabled()) {
84 LogStream ls(lt);
85 print_trace_type_profile(&ls, depth, prof_klass, site_count, receiver_count, true);
86 }
87 }
88
89 CallGenerator* Compile::call_generator(ciMethod* callee, int vtable_index, bool call_does_dispatch,
90 JVMState* jvms, bool allow_inline,
91 float prof_factor, ciKlass* speculative_receiver_type,
92 bool allow_intrinsics) {
93 assert(callee != nullptr, "failed method resolution");
94
95 ciMethod* caller = jvms->method();
96 int bci = jvms->bci();
97 Bytecodes::Code bytecode = caller->java_code_at_bci(bci);
98 ciMethod* orig_callee = caller->get_method_at_bci(bci);
99
100 const bool is_virtual_or_interface = (bytecode == Bytecodes::_invokevirtual) ||
101 (bytecode == Bytecodes::_invokeinterface) ||
102 (orig_callee->intrinsic_id() == vmIntrinsics::_linkToVirtual) ||
103 (orig_callee->intrinsic_id() == vmIntrinsics::_linkToInterface);
104
105 // Dtrace currently doesn't work unless all calls are vanilla
106 if (env()->dtrace_method_probes()) {
107 allow_inline = false;
108 }
128 log->begin_elem("call method='%d' count='%d' prof_factor='%f'",
129 log->identify(callee), site_count, prof_factor);
130 if (call_does_dispatch) log->print(" virtual='1'");
131 if (allow_inline) log->print(" inline='1'");
132 if (receiver_count >= 0) {
133 log->print(" receiver='%d' receiver_count='%d'", rid, receiver_count);
134 if (profile.has_receiver(1)) {
135 log->print(" receiver2='%d' receiver2_count='%d'", r2id, profile.receiver_count(1));
136 }
137 }
138 if (callee->is_method_handle_intrinsic()) {
139 log->print(" method_handle_intrinsic='1'");
140 }
141 log->end_elem();
142 }
143
144 // Special case the handling of certain common, profitable library
145 // methods. If these methods are replaced with specialized code,
146 // then we return it as the inlined version of the call.
147 CallGenerator* cg_intrinsic = nullptr;
148 if (allow_inline && allow_intrinsics) {
149 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
150 if (cg != nullptr) {
151 if (cg->is_predicated()) {
152 // Code without intrinsic but, hopefully, inlined.
153 CallGenerator* inline_cg = this->call_generator(callee,
154 vtable_index, call_does_dispatch, jvms, allow_inline, prof_factor, speculative_receiver_type, false);
155 if (inline_cg != nullptr) {
156 cg = CallGenerator::for_predicated_intrinsic(cg, inline_cg);
157 }
158 }
159
160 // If intrinsic does the virtual dispatch, we try to use the type profile
161 // first, and hopefully inline it as the regular virtual call below.
162 // We will retry the intrinsic if nothing had claimed it afterwards.
163 if (cg->does_virtual_dispatch()) {
164 cg_intrinsic = cg;
165 cg = nullptr;
166 } else if (IncrementalInline && should_delay_vector_inlining(callee, jvms)) {
167 return CallGenerator::for_late_inline(callee, cg);
168 } else {
584 // Speculative type of the receiver if any
585 ciKlass* speculative_receiver_type = nullptr;
586 if (is_virtual_or_interface) {
587 Node* receiver_node = stack(sp() - nargs);
588 const TypeOopPtr* receiver_type = _gvn.type(receiver_node)->isa_oopptr();
589 // call_does_dispatch and vtable_index are out-parameters. They might be changed.
590 // For arrays, klass below is Object. When vtable calls are used,
591 // resolving the call with Object would allow an illegal call to
592 // finalize() on an array. We use holder instead: illegal calls to
593 // finalize() won't be compiled as vtable calls (IC call
594 // resolution will catch the illegal call) and the few legal calls
595 // on array types won't be either.
596 callee = C->optimize_virtual_call(method(), klass, holder, orig_callee,
597 receiver_type, is_virtual,
598 call_does_dispatch, vtable_index); // out-parameters
599 speculative_receiver_type = receiver_type != nullptr ? receiver_type->speculative_type() : nullptr;
600 }
601
602 // Additional receiver subtype checks for interface calls via invokespecial or invokeinterface.
603 ciKlass* receiver_constraint = nullptr;
604 if (iter().cur_bc_raw() == Bytecodes::_invokespecial && !orig_callee->is_object_initializer()) {
605 ciInstanceKlass* calling_klass = method()->holder();
606 ciInstanceKlass* sender_klass = calling_klass;
607 if (sender_klass->is_interface()) {
608 receiver_constraint = sender_klass;
609 }
610 } else if (iter().cur_bc_raw() == Bytecodes::_invokeinterface && orig_callee->is_private()) {
611 assert(holder->is_interface(), "How did we get a non-interface method here!");
612 receiver_constraint = holder;
613 }
614
615 if (receiver_constraint != nullptr) {
616 Node* receiver_node = stack(sp() - nargs);
617 Node* cls_node = makecon(TypeKlassPtr::make(receiver_constraint, Type::trust_interfaces));
618 Node* bad_type_ctrl = nullptr;
619 Node* casted_receiver = gen_checkcast(receiver_node, cls_node, &bad_type_ctrl);
620 if (bad_type_ctrl != nullptr) {
621 PreserveJVMState pjvms(this);
622 set_control(bad_type_ctrl);
623 uncommon_trap(Deoptimization::Reason_class_check,
624 Deoptimization::Action_none);
625 }
626 if (stopped()) {
627 return; // MUST uncommon-trap?
628 }
629 set_stack(sp() - nargs, casted_receiver);
630 }
631
632 // Note: It's OK to try to inline a virtual call.
633 // The call generator will not attempt to inline a polymorphic call
634 // unless it knows how to optimize the receiver dispatch.
635 bool try_inline = (C->do_inlining() || InlineAccessors);
636
637 // ---------------------
638 dec_sp(nargs); // Temporarily pop args for JVM state of call
639 JVMState* jvms = sync_jvms();
640
641 // ---------------------
642 // Decide call tactic.
643 // This call checks with CHA, the interpreter profile, intrinsics table, etc.
644 // It decides whether inlining is desirable or not.
645 CallGenerator* cg = C->call_generator(callee, vtable_index, call_does_dispatch, jvms, try_inline, prof_factor(), speculative_receiver_type);
646
647 // NOTE: Don't use orig_callee and callee after this point! Use cg->method() instead.
648 orig_callee = callee = nullptr;
649
650 // ---------------------
651
652 // Feed profiling data for arguments to the type system so it can
653 // propagate it as speculative types
654 record_profiled_arguments_for_speculation(cg->method(), bc());
655
656 #ifndef PRODUCT
657 // bump global counters for calls
658 count_compiled_calls(/*at_method_entry*/ false, cg->is_inline());
659
660 // Record first part of parsing work for this call
661 parse_histogram()->record_change();
662 #endif // not PRODUCT
663
664 assert(jvms == this->jvms(), "still operating on the right JVMS");
665 assert(jvms_in_sync(), "jvms must carry full info into CG");
712
713 assert(check_call_consistency(jvms, cg), "inconsistent info");
714
715 if (!stopped()) {
716 // This was some sort of virtual call, which did a null check for us.
717 // Now we can assert receiver-not-null, on the normal return path.
718 if (receiver != nullptr && cg->is_virtual()) {
719 Node* cast = cast_not_null(receiver);
720 // %%% assert(receiver == cast, "should already have cast the receiver");
721 }
722
723 ciType* rtype = cg->method()->return_type();
724 ciType* ctype = declared_signature->return_type();
725
726 if (Bytecodes::has_optional_appendix(iter().cur_bc_raw()) || is_signature_polymorphic) {
727 // Be careful here with return types.
728 if (ctype != rtype) {
729 BasicType rt = rtype->basic_type();
730 BasicType ct = ctype->basic_type();
731 if (ct == T_VOID) {
732 // It's OK for a method to return a value that is discarded.
733 // The discarding does not require any special action from the caller.
734 // The Java code knows this, at VerifyType.isNullConversion.
735 pop_node(rt); // whatever it was, pop it
736 } else if (rt == T_INT || is_subword_type(rt)) {
737 // Nothing. These cases are handled in lambda form bytecode.
738 assert(ct == T_INT || is_subword_type(ct), "must match: rt=%s, ct=%s", type2name(rt), type2name(ct));
739 } else if (is_reference_type(rt)) {
740 assert(is_reference_type(ct), "rt=%s, ct=%s", type2name(rt), type2name(ct));
741 if (ctype->is_loaded()) {
742 const TypeOopPtr* arg_type = TypeOopPtr::make_from_klass(rtype->as_klass());
743 const Type* sig_type = TypeOopPtr::make_from_klass(ctype->as_klass());
744 if (arg_type != nullptr && !arg_type->higher_equal(sig_type)) {
745 Node* retnode = pop();
746 Node* cast_obj = _gvn.transform(new CheckCastPPNode(control(), retnode, sig_type));
747 push(cast_obj);
748 }
749 }
750 } else {
751 assert(rt == ct, "unexpected mismatch: rt=%s, ct=%s", type2name(rt), type2name(ct));
752 // push a zero; it's better than getting an oop/int mismatch
770 // If the return type of the method is not loaded, assert that the
771 // value we got is a null. Otherwise, we need to recompile.
772 if (!rtype->is_loaded()) {
773 if (PrintOpto && (Verbose || WizardMode)) {
774 method()->print_name(); tty->print_cr(" asserting nullness of result at bci: %d", bci());
775 cg->method()->print_name(); tty->cr();
776 }
777 if (C->log() != nullptr) {
778 C->log()->elem("assert_null reason='return' klass='%d'",
779 C->log()->identify(rtype));
780 }
781 // If there is going to be a trap, put it at the next bytecode:
782 set_bci(iter().next_bci());
783 null_assert(peek());
784 set_bci(iter().cur_bci()); // put it back
785 }
786 BasicType ct = ctype->basic_type();
787 if (is_reference_type(ct)) {
788 record_profiled_return_for_speculation();
789 }
790 }
791
792 // Restart record of parsing work after possible inlining of call
793 #ifndef PRODUCT
794 parse_histogram()->set_initial_state(bc());
795 #endif
796 }
797
798 //---------------------------catch_call_exceptions-----------------------------
799 // Put a Catch and CatchProj nodes behind a just-created call.
800 // Send their caught exceptions to the proper handler.
801 // This may be used after a call to the rethrow VM stub,
802 // when it is needed to process unloaded exception classes.
803 void Parse::catch_call_exceptions(ciExceptionHandlerStream& handlers) {
804 // Exceptions are delivered through this channel:
805 Node* i_o = this->i_o();
806
807 // Add a CatchNode.
808 Arena tmp_mem{mtCompiler};
809 GrowableArray<int> bcis(&tmp_mem, 8, 0, -1);
|
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 "ci/ciCallSite.hpp"
26 #include "ci/ciMethodHandle.hpp"
27 #include "ci/ciSymbols.hpp"
28 #include "classfile/vmIntrinsics.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "compiler/compileLog.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #include "jvm_io.h"
34 #include "logging/log.hpp"
35 #include "logging/logLevel.hpp"
36 #include "logging/logMessage.hpp"
37 #include "logging/logStream.hpp"
38 #include "opto/addnode.hpp"
39 #include "opto/callGenerator.hpp"
40 #include "opto/castnode.hpp"
41 #include "opto/cfgnode.hpp"
42 #include "opto/inlinetypenode.hpp"
43 #include "opto/mulnode.hpp"
44 #include "opto/parse.hpp"
45 #include "opto/rootnode.hpp"
46 #include "opto/runtime.hpp"
47 #include "opto/subnode.hpp"
48 #include "prims/methodHandles.hpp"
49 #include "runtime/sharedRuntime.hpp"
50 #include "utilities/macros.hpp"
51 #if INCLUDE_JFR
52 #include "jfr/jfr.hpp"
53 #endif
54
55 static void print_trace_type_profile(outputStream* out, int depth, ciKlass* prof_klass, int site_count, int receiver_count,
56 bool with_deco) {
57 if (with_deco) {
58 CompileTask::print_inline_indent(depth, out);
59 }
60 out->print(" \\-> TypeProfile (%d/%d counts) = ", receiver_count, site_count);
61 prof_klass->name()->print_symbol_on(out);
62 if (with_deco) {
72 if (!C->print_inlining()) {
73 if (!PrintOpto && !PrintCompilation) {
74 method->print_short_name();
75 tty->cr();
76 }
77 CompileTask::print_inlining_tty(prof_method, depth, bci, InliningResult::SUCCESS);
78 print_trace_type_profile(tty, depth, prof_klass, site_count, receiver_count, true);
79 } else {
80 auto stream = C->inline_printer()->record(method, jvms, InliningResult::SUCCESS);
81 print_trace_type_profile(stream, depth, prof_klass, site_count, receiver_count, false);
82 }
83 }
84
85 LogTarget(Debug, jit, inlining) lt;
86 if (lt.is_enabled()) {
87 LogStream ls(lt);
88 print_trace_type_profile(&ls, depth, prof_klass, site_count, receiver_count, true);
89 }
90 }
91
92 static bool arg_can_be_larval(ciMethod* callee, int arg_idx) {
93 if (callee->is_object_constructor() && arg_idx == 0) {
94 return true;
95 }
96
97 if (arg_idx != 1 || callee->intrinsic_id() == vmIntrinsicID::_none) {
98 return false;
99 }
100
101 switch (callee->intrinsic_id()) {
102 case vmIntrinsicID::_finishPrivateBuffer:
103 case vmIntrinsicID::_putBoolean:
104 case vmIntrinsicID::_putBooleanOpaque:
105 case vmIntrinsicID::_putBooleanRelease:
106 case vmIntrinsicID::_putBooleanVolatile:
107 case vmIntrinsicID::_putByte:
108 case vmIntrinsicID::_putByteOpaque:
109 case vmIntrinsicID::_putByteRelease:
110 case vmIntrinsicID::_putByteVolatile:
111 case vmIntrinsicID::_putChar:
112 case vmIntrinsicID::_putCharOpaque:
113 case vmIntrinsicID::_putCharRelease:
114 case vmIntrinsicID::_putCharUnaligned:
115 case vmIntrinsicID::_putCharVolatile:
116 case vmIntrinsicID::_putShort:
117 case vmIntrinsicID::_putShortOpaque:
118 case vmIntrinsicID::_putShortRelease:
119 case vmIntrinsicID::_putShortUnaligned:
120 case vmIntrinsicID::_putShortVolatile:
121 case vmIntrinsicID::_putInt:
122 case vmIntrinsicID::_putIntOpaque:
123 case vmIntrinsicID::_putIntRelease:
124 case vmIntrinsicID::_putIntUnaligned:
125 case vmIntrinsicID::_putIntVolatile:
126 case vmIntrinsicID::_putLong:
127 case vmIntrinsicID::_putLongOpaque:
128 case vmIntrinsicID::_putLongRelease:
129 case vmIntrinsicID::_putLongUnaligned:
130 case vmIntrinsicID::_putLongVolatile:
131 case vmIntrinsicID::_putFloat:
132 case vmIntrinsicID::_putFloatOpaque:
133 case vmIntrinsicID::_putFloatRelease:
134 case vmIntrinsicID::_putFloatVolatile:
135 case vmIntrinsicID::_putDouble:
136 case vmIntrinsicID::_putDoubleOpaque:
137 case vmIntrinsicID::_putDoubleRelease:
138 case vmIntrinsicID::_putDoubleVolatile:
139 case vmIntrinsicID::_putReference:
140 case vmIntrinsicID::_putReferenceOpaque:
141 case vmIntrinsicID::_putReferenceRelease:
142 case vmIntrinsicID::_putReferenceVolatile:
143 case vmIntrinsicID::_putValue:
144 return true;
145 default:
146 return false;
147 }
148 }
149
150 CallGenerator* Compile::call_generator(ciMethod* callee, int vtable_index, bool call_does_dispatch,
151 JVMState* jvms, bool allow_inline,
152 float prof_factor, ciKlass* speculative_receiver_type,
153 bool allow_intrinsics) {
154 assert(callee != nullptr, "failed method resolution");
155
156 ciMethod* caller = jvms->method();
157 int bci = jvms->bci();
158 Bytecodes::Code bytecode = caller->java_code_at_bci(bci);
159 ciMethod* orig_callee = caller->get_method_at_bci(bci);
160
161 const bool is_virtual_or_interface = (bytecode == Bytecodes::_invokevirtual) ||
162 (bytecode == Bytecodes::_invokeinterface) ||
163 (orig_callee->intrinsic_id() == vmIntrinsics::_linkToVirtual) ||
164 (orig_callee->intrinsic_id() == vmIntrinsics::_linkToInterface);
165
166 // Dtrace currently doesn't work unless all calls are vanilla
167 if (env()->dtrace_method_probes()) {
168 allow_inline = false;
169 }
189 log->begin_elem("call method='%d' count='%d' prof_factor='%f'",
190 log->identify(callee), site_count, prof_factor);
191 if (call_does_dispatch) log->print(" virtual='1'");
192 if (allow_inline) log->print(" inline='1'");
193 if (receiver_count >= 0) {
194 log->print(" receiver='%d' receiver_count='%d'", rid, receiver_count);
195 if (profile.has_receiver(1)) {
196 log->print(" receiver2='%d' receiver2_count='%d'", r2id, profile.receiver_count(1));
197 }
198 }
199 if (callee->is_method_handle_intrinsic()) {
200 log->print(" method_handle_intrinsic='1'");
201 }
202 log->end_elem();
203 }
204
205 // Special case the handling of certain common, profitable library
206 // methods. If these methods are replaced with specialized code,
207 // then we return it as the inlined version of the call.
208 CallGenerator* cg_intrinsic = nullptr;
209 if (callee->intrinsic_id() == vmIntrinsics::_makePrivateBuffer || callee->intrinsic_id() == vmIntrinsics::_finishPrivateBuffer) {
210 // These methods must be inlined so that we don't have larval value objects crossing method
211 // boundaries
212 assert(!call_does_dispatch, "callee should not be virtual %s", callee->name()->as_utf8());
213 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
214
215 if (cg == nullptr) {
216 // This is probably because the intrinsics is disabled from the command line
217 char reason[256];
218 jio_snprintf(reason, sizeof(reason), "cannot find an intrinsics for %s", callee->name()->as_utf8());
219 C->record_method_not_compilable(reason);
220 return nullptr;
221 }
222 return cg;
223 } else if (allow_inline && allow_intrinsics) {
224 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
225 if (cg != nullptr) {
226 if (cg->is_predicated()) {
227 // Code without intrinsic but, hopefully, inlined.
228 CallGenerator* inline_cg = this->call_generator(callee,
229 vtable_index, call_does_dispatch, jvms, allow_inline, prof_factor, speculative_receiver_type, false);
230 if (inline_cg != nullptr) {
231 cg = CallGenerator::for_predicated_intrinsic(cg, inline_cg);
232 }
233 }
234
235 // If intrinsic does the virtual dispatch, we try to use the type profile
236 // first, and hopefully inline it as the regular virtual call below.
237 // We will retry the intrinsic if nothing had claimed it afterwards.
238 if (cg->does_virtual_dispatch()) {
239 cg_intrinsic = cg;
240 cg = nullptr;
241 } else if (IncrementalInline && should_delay_vector_inlining(callee, jvms)) {
242 return CallGenerator::for_late_inline(callee, cg);
243 } else {
659 // Speculative type of the receiver if any
660 ciKlass* speculative_receiver_type = nullptr;
661 if (is_virtual_or_interface) {
662 Node* receiver_node = stack(sp() - nargs);
663 const TypeOopPtr* receiver_type = _gvn.type(receiver_node)->isa_oopptr();
664 // call_does_dispatch and vtable_index are out-parameters. They might be changed.
665 // For arrays, klass below is Object. When vtable calls are used,
666 // resolving the call with Object would allow an illegal call to
667 // finalize() on an array. We use holder instead: illegal calls to
668 // finalize() won't be compiled as vtable calls (IC call
669 // resolution will catch the illegal call) and the few legal calls
670 // on array types won't be either.
671 callee = C->optimize_virtual_call(method(), klass, holder, orig_callee,
672 receiver_type, is_virtual,
673 call_does_dispatch, vtable_index); // out-parameters
674 speculative_receiver_type = receiver_type != nullptr ? receiver_type->speculative_type() : nullptr;
675 }
676
677 // Additional receiver subtype checks for interface calls via invokespecial or invokeinterface.
678 ciKlass* receiver_constraint = nullptr;
679 if (iter().cur_bc_raw() == Bytecodes::_invokespecial && !orig_callee->is_object_constructor()) {
680 ciInstanceKlass* calling_klass = method()->holder();
681 ciInstanceKlass* sender_klass = calling_klass;
682 if (sender_klass->is_interface()) {
683 receiver_constraint = sender_klass;
684 }
685 } else if (iter().cur_bc_raw() == Bytecodes::_invokeinterface && orig_callee->is_private()) {
686 assert(holder->is_interface(), "How did we get a non-interface method here!");
687 receiver_constraint = holder;
688 }
689
690 if (receiver_constraint != nullptr) {
691 Node* receiver_node = stack(sp() - nargs);
692 Node* cls_node = makecon(TypeKlassPtr::make(receiver_constraint, Type::trust_interfaces));
693 Node* bad_type_ctrl = nullptr;
694 Node* casted_receiver = gen_checkcast(receiver_node, cls_node, &bad_type_ctrl);
695 if (bad_type_ctrl != nullptr) {
696 PreserveJVMState pjvms(this);
697 set_control(bad_type_ctrl);
698 uncommon_trap(Deoptimization::Reason_class_check,
699 Deoptimization::Action_none);
700 }
701 if (stopped()) {
702 return; // MUST uncommon-trap?
703 }
704 set_stack(sp() - nargs, casted_receiver);
705 }
706
707 // Scalarize value objects passed into this invocation if we know that they are not larval
708 for (int arg_idx = 0; arg_idx < nargs; arg_idx++) {
709 if (arg_can_be_larval(callee, arg_idx)) {
710 continue;
711 }
712
713 cast_to_non_larval(peek(nargs - 1 - arg_idx));
714 }
715
716 // Note: It's OK to try to inline a virtual call.
717 // The call generator will not attempt to inline a polymorphic call
718 // unless it knows how to optimize the receiver dispatch.
719 bool try_inline = (C->do_inlining() || InlineAccessors);
720
721 // ---------------------
722 dec_sp(nargs); // Temporarily pop args for JVM state of call
723 JVMState* jvms = sync_jvms();
724
725 // ---------------------
726 // Decide call tactic.
727 // This call checks with CHA, the interpreter profile, intrinsics table, etc.
728 // It decides whether inlining is desirable or not.
729 CallGenerator* cg = C->call_generator(callee, vtable_index, call_does_dispatch, jvms, try_inline, prof_factor(), speculative_receiver_type);
730 if (failing()) {
731 return;
732 }
733 assert(cg != nullptr, "must find a CallGenerator for callee %s", callee->name()->as_utf8());
734
735 // NOTE: Don't use orig_callee and callee after this point! Use cg->method() instead.
736 orig_callee = callee = nullptr;
737
738 // ---------------------
739
740 // Feed profiling data for arguments to the type system so it can
741 // propagate it as speculative types
742 record_profiled_arguments_for_speculation(cg->method(), bc());
743
744 #ifndef PRODUCT
745 // bump global counters for calls
746 count_compiled_calls(/*at_method_entry*/ false, cg->is_inline());
747
748 // Record first part of parsing work for this call
749 parse_histogram()->record_change();
750 #endif // not PRODUCT
751
752 assert(jvms == this->jvms(), "still operating on the right JVMS");
753 assert(jvms_in_sync(), "jvms must carry full info into CG");
800
801 assert(check_call_consistency(jvms, cg), "inconsistent info");
802
803 if (!stopped()) {
804 // This was some sort of virtual call, which did a null check for us.
805 // Now we can assert receiver-not-null, on the normal return path.
806 if (receiver != nullptr && cg->is_virtual()) {
807 Node* cast = cast_not_null(receiver);
808 // %%% assert(receiver == cast, "should already have cast the receiver");
809 }
810
811 ciType* rtype = cg->method()->return_type();
812 ciType* ctype = declared_signature->return_type();
813
814 if (Bytecodes::has_optional_appendix(iter().cur_bc_raw()) || is_signature_polymorphic) {
815 // Be careful here with return types.
816 if (ctype != rtype) {
817 BasicType rt = rtype->basic_type();
818 BasicType ct = ctype->basic_type();
819 if (ct == T_VOID) {
820 // It's OK for a method to return a value that is discarded.
821 // The discarding does not require any special action from the caller.
822 // The Java code knows this, at VerifyType.isNullConversion.
823 pop_node(rt); // whatever it was, pop it
824 } else if (rt == T_INT || is_subword_type(rt)) {
825 // Nothing. These cases are handled in lambda form bytecode.
826 assert(ct == T_INT || is_subword_type(ct), "must match: rt=%s, ct=%s", type2name(rt), type2name(ct));
827 } else if (is_reference_type(rt)) {
828 assert(is_reference_type(ct), "rt=%s, ct=%s", type2name(rt), type2name(ct));
829 if (ctype->is_loaded()) {
830 const TypeOopPtr* arg_type = TypeOopPtr::make_from_klass(rtype->as_klass());
831 const Type* sig_type = TypeOopPtr::make_from_klass(ctype->as_klass());
832 if (arg_type != nullptr && !arg_type->higher_equal(sig_type)) {
833 Node* retnode = pop();
834 Node* cast_obj = _gvn.transform(new CheckCastPPNode(control(), retnode, sig_type));
835 push(cast_obj);
836 }
837 }
838 } else {
839 assert(rt == ct, "unexpected mismatch: rt=%s, ct=%s", type2name(rt), type2name(ct));
840 // push a zero; it's better than getting an oop/int mismatch
858 // If the return type of the method is not loaded, assert that the
859 // value we got is a null. Otherwise, we need to recompile.
860 if (!rtype->is_loaded()) {
861 if (PrintOpto && (Verbose || WizardMode)) {
862 method()->print_name(); tty->print_cr(" asserting nullness of result at bci: %d", bci());
863 cg->method()->print_name(); tty->cr();
864 }
865 if (C->log() != nullptr) {
866 C->log()->elem("assert_null reason='return' klass='%d'",
867 C->log()->identify(rtype));
868 }
869 // If there is going to be a trap, put it at the next bytecode:
870 set_bci(iter().next_bci());
871 null_assert(peek());
872 set_bci(iter().cur_bci()); // put it back
873 }
874 BasicType ct = ctype->basic_type();
875 if (is_reference_type(ct)) {
876 record_profiled_return_for_speculation();
877 }
878
879 if (!rtype->is_void() && cg->method()->intrinsic_id() != vmIntrinsicID::_makePrivateBuffer) {
880 Node* retnode = peek();
881 const Type* rettype = gvn().type(retnode);
882 if (rettype->is_inlinetypeptr() && !retnode->is_InlineType()) {
883 retnode = InlineTypeNode::make_from_oop(this, retnode, rettype->inline_klass());
884 dec_sp(1);
885 push(retnode);
886 }
887 }
888
889 if (cg->method()->is_object_constructor() && receiver != nullptr && gvn().type(receiver)->is_inlinetypeptr()) {
890 InlineTypeNode* non_larval = InlineTypeNode::make_from_oop(this, receiver, gvn().type(receiver)->inline_klass());
891 // Relinquish the oop input, we will delay the allocation to the point it is needed, see the
892 // comments in InlineTypeNode::Ideal for more details
893 non_larval = non_larval->clone_if_required(&gvn(), nullptr);
894 non_larval->set_oop(gvn(), null());
895 non_larval->set_is_buffered(gvn(), false);
896 non_larval = gvn().transform(non_larval)->as_InlineType();
897 map()->replace_edge(receiver, non_larval);
898 }
899 }
900
901 // Restart record of parsing work after possible inlining of call
902 #ifndef PRODUCT
903 parse_histogram()->set_initial_state(bc());
904 #endif
905 }
906
907 //---------------------------catch_call_exceptions-----------------------------
908 // Put a Catch and CatchProj nodes behind a just-created call.
909 // Send their caught exceptions to the proper handler.
910 // This may be used after a call to the rethrow VM stub,
911 // when it is needed to process unloaded exception classes.
912 void Parse::catch_call_exceptions(ciExceptionHandlerStream& handlers) {
913 // Exceptions are delivered through this channel:
914 Node* i_o = this->i_o();
915
916 // Add a CatchNode.
917 Arena tmp_mem{mtCompiler};
918 GrowableArray<int> bcis(&tmp_mem, 8, 0, -1);
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