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 const bool check_access = !orig_callee->is_method_handle_intrinsic(); // method handle intrinsics don't perform access checks
106
107 // Dtrace currently doesn't work unless all calls are vanilla
108 if (env()->dtrace_method_probes()) {
130 log->begin_elem("call method='%d' count='%d' prof_factor='%f'",
131 log->identify(callee), site_count, prof_factor);
132 if (call_does_dispatch) log->print(" virtual='1'");
133 if (allow_inline) log->print(" inline='1'");
134 if (receiver_count >= 0) {
135 log->print(" receiver='%d' receiver_count='%d'", rid, receiver_count);
136 if (profile.has_receiver(1)) {
137 log->print(" receiver2='%d' receiver2_count='%d'", r2id, profile.receiver_count(1));
138 }
139 }
140 if (callee->is_method_handle_intrinsic()) {
141 log->print(" method_handle_intrinsic='1'");
142 }
143 log->end_elem();
144 }
145
146 // Special case the handling of certain common, profitable library
147 // methods. If these methods are replaced with specialized code,
148 // then we return it as the inlined version of the call.
149 CallGenerator* cg_intrinsic = nullptr;
150 if (allow_inline && allow_intrinsics) {
151 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
152 if (cg != nullptr) {
153 if (cg->is_predicated()) {
154 // Code without intrinsic but, hopefully, inlined.
155 CallGenerator* inline_cg = this->call_generator(callee,
156 vtable_index, call_does_dispatch, jvms, allow_inline, prof_factor, speculative_receiver_type, false);
157 if (inline_cg != nullptr) {
158 cg = CallGenerator::for_predicated_intrinsic(cg, inline_cg);
159 }
160 }
161
162 // If intrinsic does the virtual dispatch, we try to use the type profile
163 // first, and hopefully inline it as the regular virtual call below.
164 // We will retry the intrinsic if nothing had claimed it afterwards.
165 if (cg->does_virtual_dispatch()) {
166 cg_intrinsic = cg;
167 cg = nullptr;
168 } else if (IncrementalInline && should_delay_vector_inlining(callee, jvms)) {
169 return CallGenerator::for_late_inline(callee, cg);
170 } else {
590 // Speculative type of the receiver if any
591 ciKlass* speculative_receiver_type = nullptr;
592 if (is_virtual_or_interface) {
593 Node* receiver_node = stack(sp() - nargs);
594 const TypeOopPtr* receiver_type = _gvn.type(receiver_node)->isa_oopptr();
595 // call_does_dispatch and vtable_index are out-parameters. They might be changed.
596 // For arrays, klass below is Object. When vtable calls are used,
597 // resolving the call with Object would allow an illegal call to
598 // finalize() on an array. We use holder instead: illegal calls to
599 // finalize() won't be compiled as vtable calls (IC call
600 // resolution will catch the illegal call) and the few legal calls
601 // on array types won't be either.
602 callee = C->optimize_virtual_call(method(), klass, holder, orig_callee,
603 receiver_type, is_virtual,
604 call_does_dispatch, vtable_index); // out-parameters
605 speculative_receiver_type = receiver_type != nullptr ? receiver_type->speculative_type() : nullptr;
606 }
607
608 // Additional receiver subtype checks for interface calls via invokespecial or invokeinterface.
609 ciKlass* receiver_constraint = nullptr;
610 if (iter().cur_bc_raw() == Bytecodes::_invokespecial && !orig_callee->is_object_initializer()) {
611 ciInstanceKlass* calling_klass = method()->holder();
612 ciInstanceKlass* sender_klass = calling_klass;
613 if (sender_klass->is_interface()) {
614 receiver_constraint = sender_klass;
615 }
616 } else if (iter().cur_bc_raw() == Bytecodes::_invokeinterface && orig_callee->is_private()) {
617 assert(holder->is_interface(), "How did we get a non-interface method here!");
618 receiver_constraint = holder;
619 }
620
621 if (receiver_constraint != nullptr) {
622 Node* receiver_node = stack(sp() - nargs);
623 Node* cls_node = makecon(TypeKlassPtr::make(receiver_constraint, Type::trust_interfaces));
624 Node* bad_type_ctrl = nullptr;
625 Node* casted_receiver = gen_checkcast(receiver_node, cls_node, &bad_type_ctrl);
626 if (bad_type_ctrl != nullptr) {
627 PreserveJVMState pjvms(this);
628 set_control(bad_type_ctrl);
629 uncommon_trap(Deoptimization::Reason_class_check,
630 Deoptimization::Action_none);
631 }
632 if (stopped()) {
633 return; // MUST uncommon-trap?
634 }
635 set_stack(sp() - nargs, casted_receiver);
636 }
637
638 // Note: It's OK to try to inline a virtual call.
639 // The call generator will not attempt to inline a polymorphic call
640 // unless it knows how to optimize the receiver dispatch.
641 bool try_inline = (C->do_inlining() || InlineAccessors);
642
643 // ---------------------
644 dec_sp(nargs); // Temporarily pop args for JVM state of call
645 JVMState* jvms = sync_jvms();
646
647 // ---------------------
648 // Decide call tactic.
649 // This call checks with CHA, the interpreter profile, intrinsics table, etc.
650 // It decides whether inlining is desirable or not.
651 CallGenerator* cg = C->call_generator(callee, vtable_index, call_does_dispatch, jvms, try_inline, prof_factor(), speculative_receiver_type);
652
653 // NOTE: Don't use orig_callee and callee after this point! Use cg->method() instead.
654 orig_callee = callee = nullptr;
655
656 // ---------------------
657
658 // Feed profiling data for arguments to the type system so it can
659 // propagate it as speculative types
660 record_profiled_arguments_for_speculation(cg->method(), bc());
661
662 #ifndef PRODUCT
663 // bump global counters for calls
664 count_compiled_calls(/*at_method_entry*/ false, cg->is_inline());
665
666 // Record first part of parsing work for this call
667 parse_histogram()->record_change();
668 #endif // not PRODUCT
669
670 assert(jvms == this->jvms(), "still operating on the right JVMS");
671 assert(jvms_in_sync(), "jvms must carry full info into CG");
718
719 assert(check_call_consistency(jvms, cg), "inconsistent info");
720
721 if (!stopped()) {
722 // This was some sort of virtual call, which did a null check for us.
723 // Now we can assert receiver-not-null, on the normal return path.
724 if (receiver != nullptr && cg->is_virtual()) {
725 Node* cast = cast_not_null(receiver);
726 // %%% assert(receiver == cast, "should already have cast the receiver");
727 }
728
729 ciType* rtype = cg->method()->return_type();
730 ciType* ctype = declared_signature->return_type();
731
732 if (Bytecodes::has_optional_appendix(iter().cur_bc_raw()) || is_signature_polymorphic) {
733 // Be careful here with return types.
734 if (ctype != rtype) {
735 BasicType rt = rtype->basic_type();
736 BasicType ct = ctype->basic_type();
737 if (ct == T_VOID) {
738 // It's OK for a method to return a value that is discarded.
739 // The discarding does not require any special action from the caller.
740 // The Java code knows this, at VerifyType.isNullConversion.
741 pop_node(rt); // whatever it was, pop it
742 } else if (rt == T_INT || is_subword_type(rt)) {
743 // Nothing. These cases are handled in lambda form bytecode.
744 assert(ct == T_INT || is_subword_type(ct), "must match: rt=%s, ct=%s", type2name(rt), type2name(ct));
745 } else if (is_reference_type(rt)) {
746 assert(is_reference_type(ct), "rt=%s, ct=%s", type2name(rt), type2name(ct));
747 if (ctype->is_loaded()) {
748 const TypeOopPtr* arg_type = TypeOopPtr::make_from_klass(rtype->as_klass());
749 const Type* sig_type = TypeOopPtr::make_from_klass(ctype->as_klass());
750 if (arg_type != nullptr && !arg_type->higher_equal(sig_type)) {
751 Node* retnode = pop();
752 Node* cast_obj = _gvn.transform(new CheckCastPPNode(control(), retnode, sig_type));
753 push(cast_obj);
754 }
755 }
756 } else {
757 assert(rt == ct, "unexpected mismatch: rt=%s, ct=%s", type2name(rt), type2name(ct));
758 // push a zero; it's better than getting an oop/int mismatch
776 // If the return type of the method is not loaded, assert that the
777 // value we got is a null. Otherwise, we need to recompile.
778 if (!rtype->is_loaded()) {
779 if (PrintOpto && (Verbose || WizardMode)) {
780 method()->print_name(); tty->print_cr(" asserting nullness of result at bci: %d", bci());
781 cg->method()->print_name(); tty->cr();
782 }
783 if (C->log() != nullptr) {
784 C->log()->elem("assert_null reason='return' klass='%d'",
785 C->log()->identify(rtype));
786 }
787 // If there is going to be a trap, put it at the next bytecode:
788 set_bci(iter().next_bci());
789 null_assert(peek());
790 set_bci(iter().cur_bci()); // put it back
791 }
792 BasicType ct = ctype->basic_type();
793 if (is_reference_type(ct)) {
794 record_profiled_return_for_speculation();
795 }
796 }
797
798 // Restart record of parsing work after possible inlining of call
799 #ifndef PRODUCT
800 parse_histogram()->set_initial_state(bc());
801 #endif
802 }
803
804 //---------------------------catch_call_exceptions-----------------------------
805 // Put a Catch and CatchProj nodes behind a just-created call.
806 // Send their caught exceptions to the proper handler.
807 // This may be used after a call to the rethrow VM stub,
808 // when it is needed to process unloaded exception classes.
809 void Parse::catch_call_exceptions(ciExceptionHandlerStream& handlers) {
810 // Exceptions are delivered through this channel:
811 Node* i_o = this->i_o();
812
813 // Add a CatchNode.
814 Arena tmp_mem{mtCompiler};
815 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 const bool check_access = !orig_callee->is_method_handle_intrinsic(); // method handle intrinsics don't perform access checks
167
168 // Dtrace currently doesn't work unless all calls are vanilla
169 if (env()->dtrace_method_probes()) {
191 log->begin_elem("call method='%d' count='%d' prof_factor='%f'",
192 log->identify(callee), site_count, prof_factor);
193 if (call_does_dispatch) log->print(" virtual='1'");
194 if (allow_inline) log->print(" inline='1'");
195 if (receiver_count >= 0) {
196 log->print(" receiver='%d' receiver_count='%d'", rid, receiver_count);
197 if (profile.has_receiver(1)) {
198 log->print(" receiver2='%d' receiver2_count='%d'", r2id, profile.receiver_count(1));
199 }
200 }
201 if (callee->is_method_handle_intrinsic()) {
202 log->print(" method_handle_intrinsic='1'");
203 }
204 log->end_elem();
205 }
206
207 // Special case the handling of certain common, profitable library
208 // methods. If these methods are replaced with specialized code,
209 // then we return it as the inlined version of the call.
210 CallGenerator* cg_intrinsic = nullptr;
211 if (callee->intrinsic_id() == vmIntrinsics::_makePrivateBuffer || callee->intrinsic_id() == vmIntrinsics::_finishPrivateBuffer) {
212 // These methods must be inlined so that we don't have larval value objects crossing method
213 // boundaries
214 assert(!call_does_dispatch, "callee should not be virtual %s", callee->name()->as_utf8());
215 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
216
217 if (cg == nullptr) {
218 // This is probably because the intrinsics is disabled from the command line
219 char reason[256];
220 jio_snprintf(reason, sizeof(reason), "cannot find an intrinsics for %s", callee->name()->as_utf8());
221 C->record_method_not_compilable(reason);
222 return nullptr;
223 }
224 return cg;
225 } else if (allow_inline && allow_intrinsics) {
226 CallGenerator* cg = find_intrinsic(callee, call_does_dispatch);
227 if (cg != nullptr) {
228 if (cg->is_predicated()) {
229 // Code without intrinsic but, hopefully, inlined.
230 CallGenerator* inline_cg = this->call_generator(callee,
231 vtable_index, call_does_dispatch, jvms, allow_inline, prof_factor, speculative_receiver_type, false);
232 if (inline_cg != nullptr) {
233 cg = CallGenerator::for_predicated_intrinsic(cg, inline_cg);
234 }
235 }
236
237 // If intrinsic does the virtual dispatch, we try to use the type profile
238 // first, and hopefully inline it as the regular virtual call below.
239 // We will retry the intrinsic if nothing had claimed it afterwards.
240 if (cg->does_virtual_dispatch()) {
241 cg_intrinsic = cg;
242 cg = nullptr;
243 } else if (IncrementalInline && should_delay_vector_inlining(callee, jvms)) {
244 return CallGenerator::for_late_inline(callee, cg);
245 } else {
665 // Speculative type of the receiver if any
666 ciKlass* speculative_receiver_type = nullptr;
667 if (is_virtual_or_interface) {
668 Node* receiver_node = stack(sp() - nargs);
669 const TypeOopPtr* receiver_type = _gvn.type(receiver_node)->isa_oopptr();
670 // call_does_dispatch and vtable_index are out-parameters. They might be changed.
671 // For arrays, klass below is Object. When vtable calls are used,
672 // resolving the call with Object would allow an illegal call to
673 // finalize() on an array. We use holder instead: illegal calls to
674 // finalize() won't be compiled as vtable calls (IC call
675 // resolution will catch the illegal call) and the few legal calls
676 // on array types won't be either.
677 callee = C->optimize_virtual_call(method(), klass, holder, orig_callee,
678 receiver_type, is_virtual,
679 call_does_dispatch, vtable_index); // out-parameters
680 speculative_receiver_type = receiver_type != nullptr ? receiver_type->speculative_type() : nullptr;
681 }
682
683 // Additional receiver subtype checks for interface calls via invokespecial or invokeinterface.
684 ciKlass* receiver_constraint = nullptr;
685 if (iter().cur_bc_raw() == Bytecodes::_invokespecial && !orig_callee->is_object_constructor()) {
686 ciInstanceKlass* calling_klass = method()->holder();
687 ciInstanceKlass* sender_klass = calling_klass;
688 if (sender_klass->is_interface()) {
689 receiver_constraint = sender_klass;
690 }
691 } else if (iter().cur_bc_raw() == Bytecodes::_invokeinterface && orig_callee->is_private()) {
692 assert(holder->is_interface(), "How did we get a non-interface method here!");
693 receiver_constraint = holder;
694 }
695
696 if (receiver_constraint != nullptr) {
697 Node* receiver_node = stack(sp() - nargs);
698 Node* cls_node = makecon(TypeKlassPtr::make(receiver_constraint, Type::trust_interfaces));
699 Node* bad_type_ctrl = nullptr;
700 Node* casted_receiver = gen_checkcast(receiver_node, cls_node, &bad_type_ctrl);
701 if (bad_type_ctrl != nullptr) {
702 PreserveJVMState pjvms(this);
703 set_control(bad_type_ctrl);
704 uncommon_trap(Deoptimization::Reason_class_check,
705 Deoptimization::Action_none);
706 }
707 if (stopped()) {
708 return; // MUST uncommon-trap?
709 }
710 set_stack(sp() - nargs, casted_receiver);
711 }
712
713 // Scalarize value objects passed into this invocation if we know that they are not larval
714 for (int arg_idx = 0; arg_idx < nargs; arg_idx++) {
715 if (arg_can_be_larval(callee, arg_idx)) {
716 continue;
717 }
718
719 cast_to_non_larval(peek(nargs - 1 - arg_idx));
720 }
721
722 // Note: It's OK to try to inline a virtual call.
723 // The call generator will not attempt to inline a polymorphic call
724 // unless it knows how to optimize the receiver dispatch.
725 bool try_inline = (C->do_inlining() || InlineAccessors);
726
727 // ---------------------
728 dec_sp(nargs); // Temporarily pop args for JVM state of call
729 JVMState* jvms = sync_jvms();
730
731 // ---------------------
732 // Decide call tactic.
733 // This call checks with CHA, the interpreter profile, intrinsics table, etc.
734 // It decides whether inlining is desirable or not.
735 CallGenerator* cg = C->call_generator(callee, vtable_index, call_does_dispatch, jvms, try_inline, prof_factor(), speculative_receiver_type);
736 if (failing()) {
737 return;
738 }
739 assert(cg != nullptr, "must find a CallGenerator for callee %s", callee->name()->as_utf8());
740
741 // NOTE: Don't use orig_callee and callee after this point! Use cg->method() instead.
742 orig_callee = callee = nullptr;
743
744 // ---------------------
745
746 // Feed profiling data for arguments to the type system so it can
747 // propagate it as speculative types
748 record_profiled_arguments_for_speculation(cg->method(), bc());
749
750 #ifndef PRODUCT
751 // bump global counters for calls
752 count_compiled_calls(/*at_method_entry*/ false, cg->is_inline());
753
754 // Record first part of parsing work for this call
755 parse_histogram()->record_change();
756 #endif // not PRODUCT
757
758 assert(jvms == this->jvms(), "still operating on the right JVMS");
759 assert(jvms_in_sync(), "jvms must carry full info into CG");
806
807 assert(check_call_consistency(jvms, cg), "inconsistent info");
808
809 if (!stopped()) {
810 // This was some sort of virtual call, which did a null check for us.
811 // Now we can assert receiver-not-null, on the normal return path.
812 if (receiver != nullptr && cg->is_virtual()) {
813 Node* cast = cast_not_null(receiver);
814 // %%% assert(receiver == cast, "should already have cast the receiver");
815 }
816
817 ciType* rtype = cg->method()->return_type();
818 ciType* ctype = declared_signature->return_type();
819
820 if (Bytecodes::has_optional_appendix(iter().cur_bc_raw()) || is_signature_polymorphic) {
821 // Be careful here with return types.
822 if (ctype != rtype) {
823 BasicType rt = rtype->basic_type();
824 BasicType ct = ctype->basic_type();
825 if (ct == T_VOID) {
826 // It's OK for a method to return a value that is discarded.
827 // The discarding does not require any special action from the caller.
828 // The Java code knows this, at VerifyType.isNullConversion.
829 pop_node(rt); // whatever it was, pop it
830 } else if (rt == T_INT || is_subword_type(rt)) {
831 // Nothing. These cases are handled in lambda form bytecode.
832 assert(ct == T_INT || is_subword_type(ct), "must match: rt=%s, ct=%s", type2name(rt), type2name(ct));
833 } else if (is_reference_type(rt)) {
834 assert(is_reference_type(ct), "rt=%s, ct=%s", type2name(rt), type2name(ct));
835 if (ctype->is_loaded()) {
836 const TypeOopPtr* arg_type = TypeOopPtr::make_from_klass(rtype->as_klass());
837 const Type* sig_type = TypeOopPtr::make_from_klass(ctype->as_klass());
838 if (arg_type != nullptr && !arg_type->higher_equal(sig_type)) {
839 Node* retnode = pop();
840 Node* cast_obj = _gvn.transform(new CheckCastPPNode(control(), retnode, sig_type));
841 push(cast_obj);
842 }
843 }
844 } else {
845 assert(rt == ct, "unexpected mismatch: rt=%s, ct=%s", type2name(rt), type2name(ct));
846 // push a zero; it's better than getting an oop/int mismatch
864 // If the return type of the method is not loaded, assert that the
865 // value we got is a null. Otherwise, we need to recompile.
866 if (!rtype->is_loaded()) {
867 if (PrintOpto && (Verbose || WizardMode)) {
868 method()->print_name(); tty->print_cr(" asserting nullness of result at bci: %d", bci());
869 cg->method()->print_name(); tty->cr();
870 }
871 if (C->log() != nullptr) {
872 C->log()->elem("assert_null reason='return' klass='%d'",
873 C->log()->identify(rtype));
874 }
875 // If there is going to be a trap, put it at the next bytecode:
876 set_bci(iter().next_bci());
877 null_assert(peek());
878 set_bci(iter().cur_bci()); // put it back
879 }
880 BasicType ct = ctype->basic_type();
881 if (is_reference_type(ct)) {
882 record_profiled_return_for_speculation();
883 }
884
885 if (!rtype->is_void() && cg->method()->intrinsic_id() != vmIntrinsicID::_makePrivateBuffer) {
886 Node* retnode = peek();
887 const Type* rettype = gvn().type(retnode);
888 if (rettype->is_inlinetypeptr() && !retnode->is_InlineType()) {
889 retnode = InlineTypeNode::make_from_oop(this, retnode, rettype->inline_klass());
890 dec_sp(1);
891 push(retnode);
892 }
893 }
894
895 if (cg->method()->is_object_constructor() && receiver != nullptr && gvn().type(receiver)->is_inlinetypeptr()) {
896 InlineTypeNode* non_larval = InlineTypeNode::make_from_oop(this, receiver, gvn().type(receiver)->inline_klass());
897 // Relinquish the oop input, we will delay the allocation to the point it is needed, see the
898 // comments in InlineTypeNode::Ideal for more details
899 non_larval = non_larval->clone_if_required(&gvn(), nullptr);
900 non_larval->set_oop(gvn(), null());
901 non_larval->set_is_buffered(gvn(), false);
902 non_larval = gvn().transform(non_larval)->as_InlineType();
903 map()->replace_edge(receiver, non_larval);
904 }
905 }
906
907 // Restart record of parsing work after possible inlining of call
908 #ifndef PRODUCT
909 parse_histogram()->set_initial_state(bc());
910 #endif
911 }
912
913 //---------------------------catch_call_exceptions-----------------------------
914 // Put a Catch and CatchProj nodes behind a just-created call.
915 // Send their caught exceptions to the proper handler.
916 // This may be used after a call to the rethrow VM stub,
917 // when it is needed to process unloaded exception classes.
918 void Parse::catch_call_exceptions(ciExceptionHandlerStream& handlers) {
919 // Exceptions are delivered through this channel:
920 Node* i_o = this->i_o();
921
922 // Add a CatchNode.
923 Arena tmp_mem{mtCompiler};
924 GrowableArray<int> bcis(&tmp_mem, 8, 0, -1);
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