Mercurial > hg > truffle
annotate src/share/vm/opto/doCall.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 8aa5fd5d2046 |
| children | 3d58a4983660 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1344
diff
changeset
|
2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1344
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1344
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1344
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "ci/ciCPCache.hpp" | |
| 27 #include "ci/ciCallSite.hpp" | |
| 28 #include "ci/ciMethodHandle.hpp" | |
| 29 #include "classfile/vmSymbols.hpp" | |
| 30 #include "compiler/compileLog.hpp" | |
| 31 #include "interpreter/linkResolver.hpp" | |
| 32 #include "opto/addnode.hpp" | |
| 33 #include "opto/callGenerator.hpp" | |
| 34 #include "opto/cfgnode.hpp" | |
| 35 #include "opto/mulnode.hpp" | |
| 36 #include "opto/parse.hpp" | |
| 37 #include "opto/rootnode.hpp" | |
| 38 #include "opto/runtime.hpp" | |
| 39 #include "opto/subnode.hpp" | |
| 40 #include "prims/nativeLookup.hpp" | |
| 41 #include "runtime/sharedRuntime.hpp" | |
| 0 | 42 |
| 43 #ifndef PRODUCT | |
| 44 void trace_type_profile(ciMethod *method, int depth, int bci, ciMethod *prof_method, ciKlass *prof_klass, int site_count, int receiver_count) { | |
| 45 if (TraceTypeProfile || PrintInlining || PrintOptoInlining) { | |
| 46 tty->print(" "); | |
| 47 for( int i = 0; i < depth; i++ ) tty->print(" "); | |
| 48 if (!PrintOpto) { | |
| 49 method->print_short_name(); | |
| 50 tty->print(" ->"); | |
| 51 } | |
| 52 tty->print(" @ %d ", bci); | |
| 53 prof_method->print_short_name(); | |
| 54 tty->print(" >>TypeProfile (%d/%d counts) = ", receiver_count, site_count); | |
| 55 prof_klass->name()->print_symbol(); | |
| 56 tty->print_cr(" (%d bytes)", prof_method->code_size()); | |
| 57 } | |
| 58 } | |
| 59 #endif | |
| 60 | |
|
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1138
diff
changeset
|
61 CallGenerator* Compile::call_generator(ciMethod* call_method, int vtable_index, bool call_is_virtual, |
|
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1138
diff
changeset
|
62 JVMState* jvms, bool allow_inline, |
|
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1138
diff
changeset
|
63 float prof_factor) { |
| 0 | 64 CallGenerator* cg; |
| 65 | |
| 66 // Dtrace currently doesn't work unless all calls are vanilla | |
|
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
726
diff
changeset
|
67 if (env()->dtrace_method_probes()) { |
| 0 | 68 allow_inline = false; |
| 69 } | |
| 70 | |
| 71 // Note: When we get profiling during stage-1 compiles, we want to pull | |
| 72 // from more specific profile data which pertains to this inlining. | |
| 73 // Right now, ignore the information in jvms->caller(), and do method[bci]. | |
| 74 ciCallProfile profile = jvms->method()->call_profile_at_bci(jvms->bci()); | |
| 75 | |
| 76 // See how many times this site has been invoked. | |
| 77 int site_count = profile.count(); | |
| 78 int receiver_count = -1; | |
| 79 if (call_is_virtual && UseTypeProfile && profile.has_receiver(0)) { | |
| 80 // Receivers in the profile structure are ordered by call counts | |
| 81 // so that the most called (major) receiver is profile.receiver(0). | |
| 82 receiver_count = profile.receiver_count(0); | |
| 83 } | |
| 84 | |
| 85 CompileLog* log = this->log(); | |
| 86 if (log != NULL) { | |
| 87 int rid = (receiver_count >= 0)? log->identify(profile.receiver(0)): -1; | |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1206
diff
changeset
|
88 int r2id = (rid != -1 && profile.has_receiver(1))? log->identify(profile.receiver(1)):-1; |
| 0 | 89 log->begin_elem("call method='%d' count='%d' prof_factor='%g'", |
| 90 log->identify(call_method), site_count, prof_factor); | |
| 91 if (call_is_virtual) log->print(" virtual='1'"); | |
| 92 if (allow_inline) log->print(" inline='1'"); | |
| 93 if (receiver_count >= 0) { | |
| 94 log->print(" receiver='%d' receiver_count='%d'", rid, receiver_count); | |
| 95 if (profile.has_receiver(1)) { | |
| 96 log->print(" receiver2='%d' receiver2_count='%d'", r2id, profile.receiver_count(1)); | |
| 97 } | |
| 98 } | |
| 99 log->end_elem(); | |
| 100 } | |
| 101 | |
| 102 // Special case the handling of certain common, profitable library | |
| 103 // methods. If these methods are replaced with specialized code, | |
| 104 // then we return it as the inlined version of the call. | |
| 105 // We do this before the strict f.p. check below because the | |
| 106 // intrinsics handle strict f.p. correctly. | |
| 107 if (allow_inline) { | |
| 108 cg = find_intrinsic(call_method, call_is_virtual); | |
| 109 if (cg != NULL) return cg; | |
| 110 } | |
| 111 | |
|
1823
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
112 // Do MethodHandle calls. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
113 // NOTE: This must happen before normal inlining logic below since |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
114 // MethodHandle.invoke* are native methods which obviously don't |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
115 // have bytecodes and so normal inlining fails. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
116 if (call_method->is_method_handle_invoke()) { |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
117 if (jvms->method()->java_code_at_bci(jvms->bci()) != Bytecodes::_invokedynamic) { |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
118 GraphKit kit(jvms); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
119 Node* n = kit.argument(0); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
120 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
121 if (n->Opcode() == Op_ConP) { |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
122 const TypeOopPtr* oop_ptr = n->bottom_type()->is_oopptr(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
123 ciObject* const_oop = oop_ptr->const_oop(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
124 ciMethodHandle* method_handle = const_oop->as_method_handle(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
125 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
126 // Set the actually called method to have access to the class |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
127 // and signature in the MethodHandleCompiler. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
128 method_handle->set_callee(call_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
129 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
130 // Get an adapter for the MethodHandle. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
131 ciMethod* target_method = method_handle->get_method_handle_adapter(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
132 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
133 CallGenerator* hit_cg = this->call_generator(target_method, vtable_index, false, jvms, true, prof_factor); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
134 if (hit_cg != NULL && hit_cg->is_inline()) |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
135 return hit_cg; |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
136 } |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
137 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
138 return CallGenerator::for_direct_call(call_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
139 } |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
140 else { |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
141 // Get the MethodHandle from the CallSite. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
142 ciMethod* caller_method = jvms->method(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
143 ciBytecodeStream str(caller_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
144 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
145 ciCallSite* call_site = str.get_call_site(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
146 ciMethodHandle* method_handle = call_site->get_target(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
147 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
148 // Set the actually called method to have access to the class |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
149 // and signature in the MethodHandleCompiler. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
150 method_handle->set_callee(call_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
151 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
152 // Get an adapter for the MethodHandle. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
153 ciMethod* target_method = method_handle->get_invokedynamic_adapter(); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
154 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
155 CallGenerator* hit_cg = this->call_generator(target_method, vtable_index, false, jvms, true, prof_factor); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
156 if (hit_cg != NULL && hit_cg->is_inline()) { |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
157 CallGenerator* miss_cg = CallGenerator::for_dynamic_call(call_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
158 return CallGenerator::for_predicted_dynamic_call(method_handle, miss_cg, hit_cg, prof_factor); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
159 } |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
160 |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
161 // If something failed, generate a normal dynamic call. |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
162 return CallGenerator::for_dynamic_call(call_method); |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
163 } |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
164 } |
|
8aa5fd5d2046
6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument
twisti
parents:
1645
diff
changeset
|
165 |
| 0 | 166 // Do not inline strict fp into non-strict code, or the reverse |
| 167 bool caller_method_is_strict = jvms->method()->is_strict(); | |
| 168 if( caller_method_is_strict ^ call_method->is_strict() ) { | |
| 169 allow_inline = false; | |
| 170 } | |
| 171 | |
| 172 // Attempt to inline... | |
| 173 if (allow_inline) { | |
| 174 // The profile data is only partly attributable to this caller, | |
| 175 // scale back the call site information. | |
| 176 float past_uses = jvms->method()->scale_count(site_count, prof_factor); | |
| 177 // This is the number of times we expect the call code to be used. | |
| 178 float expected_uses = past_uses; | |
| 179 | |
| 180 // Try inlining a bytecoded method: | |
| 181 if (!call_is_virtual) { | |
| 182 InlineTree* ilt; | |
| 183 if (UseOldInlining) { | |
| 184 ilt = InlineTree::find_subtree_from_root(this->ilt(), jvms->caller(), jvms->method()); | |
| 185 } else { | |
| 186 // Make a disembodied, stateless ILT. | |
| 187 // TO DO: When UseOldInlining is removed, copy the ILT code elsewhere. | |
| 188 float site_invoke_ratio = prof_factor; | |
| 189 // Note: ilt is for the root of this parse, not the present call site. | |
|
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1138
diff
changeset
|
190 ilt = new InlineTree(this, jvms->method(), jvms->caller(), site_invoke_ratio, 0); |
| 0 | 191 } |
| 192 WarmCallInfo scratch_ci; | |
| 193 if (!UseOldInlining) | |
| 194 scratch_ci.init(jvms, call_method, profile, prof_factor); | |
| 195 WarmCallInfo* ci = ilt->ok_to_inline(call_method, jvms, profile, &scratch_ci); | |
| 196 assert(ci != &scratch_ci, "do not let this pointer escape"); | |
| 197 bool allow_inline = (ci != NULL && !ci->is_cold()); | |
| 198 bool require_inline = (allow_inline && ci->is_hot()); | |
| 199 | |
| 200 if (allow_inline) { | |
| 201 CallGenerator* cg = CallGenerator::for_inline(call_method, expected_uses); | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
202 if (require_inline && cg != NULL && should_delay_inlining(call_method, jvms)) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
203 // Delay the inlining of this method to give us the |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
204 // opportunity to perform some high level optimizations |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
205 // first. |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
206 return CallGenerator::for_late_inline(call_method, cg); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
207 } |
| 0 | 208 if (cg == NULL) { |
| 209 // Fall through. | |
| 210 } else if (require_inline || !InlineWarmCalls) { | |
| 211 return cg; | |
| 212 } else { | |
| 213 CallGenerator* cold_cg = call_generator(call_method, vtable_index, call_is_virtual, jvms, false, prof_factor); | |
| 214 return CallGenerator::for_warm_call(ci, cold_cg, cg); | |
| 215 } | |
| 216 } | |
| 217 } | |
| 218 | |
| 219 // Try using the type profile. | |
| 220 if (call_is_virtual && site_count > 0 && receiver_count > 0) { | |
| 221 // The major receiver's count >= TypeProfileMajorReceiverPercent of site_count. | |
| 222 bool have_major_receiver = (100.*profile.receiver_prob(0) >= (float)TypeProfileMajorReceiverPercent); | |
| 223 ciMethod* receiver_method = NULL; | |
| 224 if (have_major_receiver || profile.morphism() == 1 || | |
| 225 (profile.morphism() == 2 && UseBimorphicInlining)) { | |
| 226 // receiver_method = profile.method(); | |
| 227 // Profiles do not suggest methods now. Look it up in the major receiver. | |
| 228 receiver_method = call_method->resolve_invoke(jvms->method()->holder(), | |
| 229 profile.receiver(0)); | |
| 230 } | |
| 231 if (receiver_method != NULL) { | |
| 232 // The single majority receiver sufficiently outweighs the minority. | |
| 233 CallGenerator* hit_cg = this->call_generator(receiver_method, | |
| 234 vtable_index, !call_is_virtual, jvms, allow_inline, prof_factor); | |
| 235 if (hit_cg != NULL) { | |
| 236 // Look up second receiver. | |
| 237 CallGenerator* next_hit_cg = NULL; | |
| 238 ciMethod* next_receiver_method = NULL; | |
| 239 if (profile.morphism() == 2 && UseBimorphicInlining) { | |
| 240 next_receiver_method = call_method->resolve_invoke(jvms->method()->holder(), | |
| 241 profile.receiver(1)); | |
| 242 if (next_receiver_method != NULL) { | |
| 243 next_hit_cg = this->call_generator(next_receiver_method, | |
| 244 vtable_index, !call_is_virtual, jvms, | |
| 245 allow_inline, prof_factor); | |
| 246 if (next_hit_cg != NULL && !next_hit_cg->is_inline() && | |
| 247 have_major_receiver && UseOnlyInlinedBimorphic) { | |
| 248 // Skip if we can't inline second receiver's method | |
| 249 next_hit_cg = NULL; | |
| 250 } | |
| 251 } | |
| 252 } | |
| 253 CallGenerator* miss_cg; | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1157
diff
changeset
|
254 Deoptimization::DeoptReason reason = (profile.morphism() == 2) ? |
|
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1157
diff
changeset
|
255 Deoptimization::Reason_bimorphic : |
|
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1157
diff
changeset
|
256 Deoptimization::Reason_class_check; |
| 0 | 257 if (( profile.morphism() == 1 || |
| 258 (profile.morphism() == 2 && next_hit_cg != NULL) ) && | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1157
diff
changeset
|
259 !too_many_traps(jvms->method(), jvms->bci(), reason) |
| 0 | 260 ) { |
| 261 // Generate uncommon trap for class check failure path | |
| 262 // in case of monomorphic or bimorphic virtual call site. | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1157
diff
changeset
|
263 miss_cg = CallGenerator::for_uncommon_trap(call_method, reason, |
| 0 | 264 Deoptimization::Action_maybe_recompile); |
| 265 } else { | |
| 266 // Generate virtual call for class check failure path | |
| 267 // in case of polymorphic virtual call site. | |
| 268 miss_cg = CallGenerator::for_virtual_call(call_method, vtable_index); | |
| 269 } | |
| 270 if (miss_cg != NULL) { | |
| 271 if (next_hit_cg != NULL) { | |
| 272 NOT_PRODUCT(trace_type_profile(jvms->method(), jvms->depth(), jvms->bci(), next_receiver_method, profile.receiver(1), site_count, profile.receiver_count(1))); | |
| 273 // We don't need to record dependency on a receiver here and below. | |
| 274 // Whenever we inline, the dependency is added by Parse::Parse(). | |
| 275 miss_cg = CallGenerator::for_predicted_call(profile.receiver(1), miss_cg, next_hit_cg, PROB_MAX); | |
| 276 } | |
| 277 if (miss_cg != NULL) { | |
| 278 NOT_PRODUCT(trace_type_profile(jvms->method(), jvms->depth(), jvms->bci(), receiver_method, profile.receiver(0), site_count, receiver_count)); | |
| 279 cg = CallGenerator::for_predicted_call(profile.receiver(0), miss_cg, hit_cg, profile.receiver_prob(0)); | |
| 280 if (cg != NULL) return cg; | |
| 281 } | |
| 282 } | |
| 283 } | |
| 284 } | |
| 285 } | |
| 286 } | |
| 287 | |
| 288 // There was no special inlining tactic, or it bailed out. | |
| 289 // Use a more generic tactic, like a simple call. | |
| 290 if (call_is_virtual) { | |
| 291 return CallGenerator::for_virtual_call(call_method, vtable_index); | |
| 292 } else { | |
| 293 // Class Hierarchy Analysis or Type Profile reveals a unique target, | |
| 294 // or it is a static or special call. | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
295 return CallGenerator::for_direct_call(call_method, should_delay_inlining(call_method, jvms)); |
| 0 | 296 } |
| 297 } | |
| 298 | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
299 // Return true for methods that shouldn't be inlined early so that |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
300 // they are easier to analyze and optimize as intrinsics. |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
301 bool Compile::should_delay_inlining(ciMethod* call_method, JVMState* jvms) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
302 if (has_stringbuilder()) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
303 |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
304 if ((call_method->holder() == C->env()->StringBuilder_klass() || |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
305 call_method->holder() == C->env()->StringBuffer_klass()) && |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
306 (jvms->method()->holder() == C->env()->StringBuilder_klass() || |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
307 jvms->method()->holder() == C->env()->StringBuffer_klass())) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
308 // Delay SB calls only when called from non-SB code |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
309 return false; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
310 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
311 |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
312 switch (call_method->intrinsic_id()) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
313 case vmIntrinsics::_StringBuilder_void: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
314 case vmIntrinsics::_StringBuilder_int: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
315 case vmIntrinsics::_StringBuilder_String: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
316 case vmIntrinsics::_StringBuilder_append_char: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
317 case vmIntrinsics::_StringBuilder_append_int: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
318 case vmIntrinsics::_StringBuilder_append_String: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
319 case vmIntrinsics::_StringBuilder_toString: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
320 case vmIntrinsics::_StringBuffer_void: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
321 case vmIntrinsics::_StringBuffer_int: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
322 case vmIntrinsics::_StringBuffer_String: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
323 case vmIntrinsics::_StringBuffer_append_char: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
324 case vmIntrinsics::_StringBuffer_append_int: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
325 case vmIntrinsics::_StringBuffer_append_String: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
326 case vmIntrinsics::_StringBuffer_toString: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
327 case vmIntrinsics::_Integer_toString: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
328 return true; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
329 |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
330 case vmIntrinsics::_String_String: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
331 { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
332 Node* receiver = jvms->map()->in(jvms->argoff() + 1); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
333 if (receiver->is_Proj() && receiver->in(0)->is_CallStaticJava()) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
334 CallStaticJavaNode* csj = receiver->in(0)->as_CallStaticJava(); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
335 ciMethod* m = csj->method(); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
336 if (m != NULL && |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
337 (m->intrinsic_id() == vmIntrinsics::_StringBuffer_toString || |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
338 m->intrinsic_id() == vmIntrinsics::_StringBuilder_toString)) |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
339 // Delay String.<init>(new SB()) |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
340 return true; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
341 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
342 return false; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
343 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
344 |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
345 default: |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
346 return false; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
347 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
348 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
349 return false; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
350 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
844
diff
changeset
|
351 |
| 0 | 352 |
| 353 // uncommon-trap call-sites where callee is unloaded, uninitialized or will not link | |
| 354 bool Parse::can_not_compile_call_site(ciMethod *dest_method, ciInstanceKlass* klass) { | |
| 355 // Additional inputs to consider... | |
| 356 // bc = bc() | |
| 357 // caller = method() | |
| 358 // iter().get_method_holder_index() | |
| 359 assert( dest_method->is_loaded(), "ciTypeFlow should not let us get here" ); | |
| 360 // Interface classes can be loaded & linked and never get around to | |
| 361 // being initialized. Uncommon-trap for not-initialized static or | |
| 362 // v-calls. Let interface calls happen. | |
|
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1135
diff
changeset
|
363 ciInstanceKlass* holder_klass = dest_method->holder(); |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
364 if (!holder_klass->is_being_initialized() && |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
365 !holder_klass->is_initialized() && |
| 0 | 366 !holder_klass->is_interface()) { |
| 367 uncommon_trap(Deoptimization::Reason_uninitialized, | |
| 368 Deoptimization::Action_reinterpret, | |
| 369 holder_klass); | |
| 370 return true; | |
| 371 } | |
| 372 | |
| 373 assert(dest_method->will_link(method()->holder(), klass, bc()), "dest_method: typeflow responsibility"); | |
| 374 return false; | |
| 375 } | |
| 376 | |
| 377 | |
| 378 //------------------------------do_call---------------------------------------- | |
| 379 // Handle your basic call. Inline if we can & want to, else just setup call. | |
| 380 void Parse::do_call() { | |
| 381 // It's likely we are going to add debug info soon. | |
| 382 // Also, if we inline a guy who eventually needs debug info for this JVMS, | |
| 383 // our contribution to it is cleaned up right here. | |
| 384 kill_dead_locals(); | |
| 385 | |
| 386 // Set frequently used booleans | |
| 387 bool is_virtual = bc() == Bytecodes::_invokevirtual; | |
| 388 bool is_virtual_or_interface = is_virtual || bc() == Bytecodes::_invokeinterface; | |
| 389 bool has_receiver = is_virtual_or_interface || bc() == Bytecodes::_invokespecial; | |
|
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1135
diff
changeset
|
390 bool is_invokedynamic = bc() == Bytecodes::_invokedynamic; |
| 0 | 391 |
| 392 // Find target being called | |
| 393 bool will_link; | |
| 394 ciMethod* dest_method = iter().get_method(will_link); | |
| 395 ciInstanceKlass* holder_klass = dest_method->holder(); | |
| 396 ciKlass* holder = iter().get_declared_method_holder(); | |
| 397 ciInstanceKlass* klass = ciEnv::get_instance_klass_for_declared_method_holder(holder); | |
| 398 | |
|
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1135
diff
changeset
|
399 int nargs = dest_method->arg_size(); |
|
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1135
diff
changeset
|
400 if (is_invokedynamic) nargs -= 1; |
| 0 | 401 |
| 402 // uncommon-trap when callee is unloaded, uninitialized or will not link | |
| 403 // bailout when too many arguments for register representation | |
| 404 if (!will_link || can_not_compile_call_site(dest_method, klass)) { | |
| 405 #ifndef PRODUCT | |
| 406 if (PrintOpto && (Verbose || WizardMode)) { | |
| 407 method()->print_name(); tty->print_cr(" can not compile call at bci %d to:", bci()); | |
| 408 dest_method->print_name(); tty->cr(); | |
| 409 } | |
| 410 #endif | |
| 411 return; | |
| 412 } | |
| 413 assert(holder_klass->is_loaded(), ""); | |
|
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1135
diff
changeset
|
414 assert((dest_method->is_static() || is_invokedynamic) == !has_receiver , "must match bc"); |
| 0 | 415 // Note: this takes into account invokeinterface of methods declared in java/lang/Object, |
| 416 // which should be invokevirtuals but according to the VM spec may be invokeinterfaces | |
| 417 assert(holder_klass->is_interface() || holder_klass->super() == NULL || (bc() != Bytecodes::_invokeinterface), "must match bc"); | |
| 418 // Note: In the absence of miranda methods, an abstract class K can perform | |
| 419 // an invokevirtual directly on an interface method I.m if K implements I. | |
| 420 | |
| 421 // --------------------- | |
| 422 // Does Class Hierarchy Analysis reveal only a single target of a v-call? | |
| 423 // Then we may inline or make a static call, but become dependent on there being only 1 target. | |
| 424 // Does the call-site type profile reveal only one receiver? | |
| 425 // Then we may introduce a run-time check and inline on the path where it succeeds. | |
| 426 // The other path may uncommon_trap, check for another receiver, or do a v-call. | |
| 427 | |
| 428 // Choose call strategy. | |
| 429 bool call_is_virtual = is_virtual_or_interface; | |
| 430 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 431 ciMethod* call_method = dest_method; | |
| 432 | |
| 433 // Try to get the most accurate receiver type | |
| 434 if (is_virtual_or_interface) { | |
| 435 Node* receiver_node = stack(sp() - nargs); | |
| 436 const TypeOopPtr* receiver_type = _gvn.type(receiver_node)->isa_oopptr(); | |
| 437 ciMethod* optimized_virtual_method = optimize_inlining(method(), bci(), klass, dest_method, receiver_type); | |
| 438 | |
| 439 // Have the call been sufficiently improved such that it is no longer a virtual? | |
| 440 if (optimized_virtual_method != NULL) { | |
| 441 call_method = optimized_virtual_method; | |
| 442 call_is_virtual = false; | |
| 443 } else if (!UseInlineCaches && is_virtual && call_method->is_loaded()) { | |
| 444 // We can make a vtable call at this site | |
| 445 vtable_index = call_method->resolve_vtable_index(method()->holder(), klass); | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 // Note: It's OK to try to inline a virtual call. | |
| 450 // The call generator will not attempt to inline a polymorphic call | |
| 451 // unless it knows how to optimize the receiver dispatch. | |
| 452 bool try_inline = (C->do_inlining() || InlineAccessors); | |
| 453 | |
| 454 // --------------------- | |
| 455 inc_sp(- nargs); // Temporarily pop args for JVM state of call | |
| 456 JVMState* jvms = sync_jvms(); | |
| 457 | |
| 458 // --------------------- | |
| 459 // Decide call tactic. | |
| 460 // This call checks with CHA, the interpreter profile, intrinsics table, etc. | |
| 461 // It decides whether inlining is desirable or not. | |
| 462 CallGenerator* cg = C->call_generator(call_method, vtable_index, call_is_virtual, jvms, try_inline, prof_factor()); | |
| 463 | |
| 464 // --------------------- | |
| 465 // Round double arguments before call | |
| 466 round_double_arguments(dest_method); | |
| 467 | |
| 468 #ifndef PRODUCT | |
| 469 // bump global counters for calls | |
| 470 count_compiled_calls(false/*at_method_entry*/, cg->is_inline()); | |
| 471 | |
| 472 // Record first part of parsing work for this call | |
| 473 parse_histogram()->record_change(); | |
| 474 #endif // not PRODUCT | |
| 475 | |
| 476 assert(jvms == this->jvms(), "still operating on the right JVMS"); | |
| 477 assert(jvms_in_sync(), "jvms must carry full info into CG"); | |
| 478 | |
| 479 // save across call, for a subsequent cast_not_null. | |
| 480 Node* receiver = has_receiver ? argument(0) : NULL; | |
| 481 | |
| 482 // Bump method data counters (We profile *before* the call is made | |
| 483 // because exceptions don't return to the call site.) | |
| 484 profile_call(receiver); | |
| 485 | |
| 486 JVMState* new_jvms; | |
| 487 if ((new_jvms = cg->generate(jvms)) == NULL) { | |
| 488 // When inlining attempt fails (e.g., too many arguments), | |
| 489 // it may contaminate the current compile state, making it | |
| 490 // impossible to pull back and try again. Once we call | |
| 491 // cg->generate(), we are committed. If it fails, the whole | |
| 492 // compilation task is compromised. | |
| 493 if (failing()) return; | |
| 494 #ifndef PRODUCT | |
| 495 if (PrintOpto || PrintOptoInlining || PrintInlining) { | |
| 496 // Only one fall-back, so if an intrinsic fails, ignore any bytecodes. | |
| 497 if (cg->is_intrinsic() && call_method->code_size() > 0) { | |
| 498 tty->print("Bailed out of intrinsic, will not inline: "); | |
| 499 call_method->print_name(); tty->cr(); | |
| 500 } | |
| 501 } | |
| 502 #endif | |
| 503 // This can happen if a library intrinsic is available, but refuses | |
| 504 // the call site, perhaps because it did not match a pattern the | |
| 505 // intrinsic was expecting to optimize. The fallback position is | |
| 506 // to call out-of-line. | |
| 507 try_inline = false; // Inline tactic bailed out. | |
| 508 cg = C->call_generator(call_method, vtable_index, call_is_virtual, jvms, try_inline, prof_factor()); | |
| 509 if ((new_jvms = cg->generate(jvms)) == NULL) { | |
| 510 guarantee(failing(), "call failed to generate: calls should work"); | |
| 511 return; | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 if (cg->is_inline()) { | |
| 67 | 516 // Accumulate has_loops estimate |
| 517 C->set_has_loops(C->has_loops() || call_method->has_loops()); | |
| 0 | 518 C->env()->notice_inlined_method(call_method); |
| 519 } | |
| 520 | |
| 521 // Reset parser state from [new_]jvms, which now carries results of the call. | |
| 522 // Return value (if any) is already pushed on the stack by the cg. | |
| 523 add_exception_states_from(new_jvms); | |
| 524 if (new_jvms->map()->control() == top()) { | |
| 525 stop_and_kill_map(); | |
| 526 } else { | |
| 527 assert(new_jvms->same_calls_as(jvms), "method/bci left unchanged"); | |
| 528 set_jvms(new_jvms); | |
| 529 } | |
| 530 | |
| 531 if (!stopped()) { | |
| 532 // This was some sort of virtual call, which did a null check for us. | |
| 533 // Now we can assert receiver-not-null, on the normal return path. | |
| 534 if (receiver != NULL && cg->is_virtual()) { | |
| 535 Node* cast = cast_not_null(receiver); | |
| 536 // %%% assert(receiver == cast, "should already have cast the receiver"); | |
| 537 } | |
| 538 | |
| 539 // Round double result after a call from strict to non-strict code | |
| 540 round_double_result(dest_method); | |
| 541 | |
| 542 // If the return type of the method is not loaded, assert that the | |
| 543 // value we got is a null. Otherwise, we need to recompile. | |
| 544 if (!dest_method->return_type()->is_loaded()) { | |
| 545 #ifndef PRODUCT | |
| 546 if (PrintOpto && (Verbose || WizardMode)) { | |
| 547 method()->print_name(); tty->print_cr(" asserting nullness of result at bci: %d", bci()); | |
| 548 dest_method->print_name(); tty->cr(); | |
| 549 } | |
| 550 #endif | |
| 551 if (C->log() != NULL) { | |
| 552 C->log()->elem("assert_null reason='return' klass='%d'", | |
| 553 C->log()->identify(dest_method->return_type())); | |
| 554 } | |
| 555 // If there is going to be a trap, put it at the next bytecode: | |
| 556 set_bci(iter().next_bci()); | |
| 557 do_null_assert(peek(), T_OBJECT); | |
| 558 set_bci(iter().cur_bci()); // put it back | |
| 559 } | |
| 560 } | |
| 561 | |
| 562 // Restart record of parsing work after possible inlining of call | |
| 563 #ifndef PRODUCT | |
| 564 parse_histogram()->set_initial_state(bc()); | |
| 565 #endif | |
| 566 } | |
| 567 | |
| 568 //---------------------------catch_call_exceptions----------------------------- | |
| 569 // Put a Catch and CatchProj nodes behind a just-created call. | |
| 570 // Send their caught exceptions to the proper handler. | |
| 571 // This may be used after a call to the rethrow VM stub, | |
| 572 // when it is needed to process unloaded exception classes. | |
| 573 void Parse::catch_call_exceptions(ciExceptionHandlerStream& handlers) { | |
| 574 // Exceptions are delivered through this channel: | |
| 575 Node* i_o = this->i_o(); | |
| 576 | |
| 577 // Add a CatchNode. | |
| 578 GrowableArray<int>* bcis = new (C->node_arena()) GrowableArray<int>(C->node_arena(), 8, 0, -1); | |
| 579 GrowableArray<const Type*>* extypes = new (C->node_arena()) GrowableArray<const Type*>(C->node_arena(), 8, 0, NULL); | |
| 580 GrowableArray<int>* saw_unloaded = new (C->node_arena()) GrowableArray<int>(C->node_arena(), 8, 0, 0); | |
| 581 | |
| 582 for (; !handlers.is_done(); handlers.next()) { | |
| 583 ciExceptionHandler* h = handlers.handler(); | |
| 584 int h_bci = h->handler_bci(); | |
| 585 ciInstanceKlass* h_klass = h->is_catch_all() ? env()->Throwable_klass() : h->catch_klass(); | |
| 586 // Do not introduce unloaded exception types into the graph: | |
| 587 if (!h_klass->is_loaded()) { | |
| 588 if (saw_unloaded->contains(h_bci)) { | |
| 589 /* We've already seen an unloaded exception with h_bci, | |
| 590 so don't duplicate. Duplication will cause the CatchNode to be | |
| 591 unnecessarily large. See 4713716. */ | |
| 592 continue; | |
| 593 } else { | |
| 594 saw_unloaded->append(h_bci); | |
| 595 } | |
| 596 } | |
| 597 const Type* h_extype = TypeOopPtr::make_from_klass(h_klass); | |
| 598 // (We use make_from_klass because it respects UseUniqueSubclasses.) | |
| 599 h_extype = h_extype->join(TypeInstPtr::NOTNULL); | |
| 600 assert(!h_extype->empty(), "sanity"); | |
| 601 // Note: It's OK if the BCIs repeat themselves. | |
| 602 bcis->append(h_bci); | |
| 603 extypes->append(h_extype); | |
| 604 } | |
| 605 | |
| 606 int len = bcis->length(); | |
| 607 CatchNode *cn = new (C, 2) CatchNode(control(), i_o, len+1); | |
| 608 Node *catch_ = _gvn.transform(cn); | |
| 609 | |
| 610 // now branch with the exception state to each of the (potential) | |
| 611 // handlers | |
| 612 for(int i=0; i < len; i++) { | |
| 613 // Setup JVM state to enter the handler. | |
| 614 PreserveJVMState pjvms(this); | |
| 615 // Locals are just copied from before the call. | |
| 616 // Get control from the CatchNode. | |
| 617 int handler_bci = bcis->at(i); | |
| 618 Node* ctrl = _gvn.transform( new (C, 1) CatchProjNode(catch_, i+1,handler_bci)); | |
| 619 // This handler cannot happen? | |
| 620 if (ctrl == top()) continue; | |
| 621 set_control(ctrl); | |
| 622 | |
| 623 // Create exception oop | |
| 624 const TypeInstPtr* extype = extypes->at(i)->is_instptr(); | |
| 625 Node *ex_oop = _gvn.transform(new (C, 2) CreateExNode(extypes->at(i), ctrl, i_o)); | |
| 626 | |
| 627 // Handle unloaded exception classes. | |
| 628 if (saw_unloaded->contains(handler_bci)) { | |
| 629 // An unloaded exception type is coming here. Do an uncommon trap. | |
| 630 #ifndef PRODUCT | |
| 631 // We do not expect the same handler bci to take both cold unloaded | |
| 632 // and hot loaded exceptions. But, watch for it. | |
| 633 if (extype->is_loaded()) { | |
| 634 tty->print_cr("Warning: Handler @%d takes mixed loaded/unloaded exceptions in "); | |
| 635 method()->print_name(); tty->cr(); | |
| 636 } else if (PrintOpto && (Verbose || WizardMode)) { | |
| 637 tty->print("Bailing out on unloaded exception type "); | |
| 638 extype->klass()->print_name(); | |
| 639 tty->print(" at bci:%d in ", bci()); | |
| 640 method()->print_name(); tty->cr(); | |
| 641 } | |
| 642 #endif | |
| 643 // Emit an uncommon trap instead of processing the block. | |
| 644 set_bci(handler_bci); | |
| 645 push_ex_oop(ex_oop); | |
| 646 uncommon_trap(Deoptimization::Reason_unloaded, | |
| 647 Deoptimization::Action_reinterpret, | |
| 648 extype->klass(), "!loaded exception"); | |
| 649 set_bci(iter().cur_bci()); // put it back | |
| 650 continue; | |
| 651 } | |
| 652 | |
| 653 // go to the exception handler | |
| 654 if (handler_bci < 0) { // merge with corresponding rethrow node | |
| 655 throw_to_exit(make_exception_state(ex_oop)); | |
| 656 } else { // Else jump to corresponding handle | |
| 657 push_ex_oop(ex_oop); // Clear stack and push just the oop. | |
| 658 merge_exception(handler_bci); | |
| 659 } | |
| 660 } | |
| 661 | |
| 662 // The first CatchProj is for the normal return. | |
| 663 // (Note: If this is a call to rethrow_Java, this node goes dead.) | |
| 664 set_control(_gvn.transform( new (C, 1) CatchProjNode(catch_, CatchProjNode::fall_through_index, CatchProjNode::no_handler_bci))); | |
| 665 } | |
| 666 | |
| 667 | |
| 668 //----------------------------catch_inline_exceptions-------------------------- | |
| 669 // Handle all exceptions thrown by an inlined method or individual bytecode. | |
| 670 // Common case 1: we have no handler, so all exceptions merge right into | |
| 671 // the rethrow case. | |
| 672 // Case 2: we have some handlers, with loaded exception klasses that have | |
| 673 // no subklasses. We do a Deutsch-Shiffman style type-check on the incoming | |
| 674 // exception oop and branch to the handler directly. | |
| 675 // Case 3: We have some handlers with subklasses or are not loaded at | |
| 676 // compile-time. We have to call the runtime to resolve the exception. | |
| 677 // So we insert a RethrowCall and all the logic that goes with it. | |
| 678 void Parse::catch_inline_exceptions(SafePointNode* ex_map) { | |
| 679 // Caller is responsible for saving away the map for normal control flow! | |
| 680 assert(stopped(), "call set_map(NULL) first"); | |
| 681 assert(method()->has_exception_handlers(), "don't come here w/o work to do"); | |
| 682 | |
| 683 Node* ex_node = saved_ex_oop(ex_map); | |
| 684 if (ex_node == top()) { | |
| 685 // No action needed. | |
| 686 return; | |
| 687 } | |
| 688 const TypeInstPtr* ex_type = _gvn.type(ex_node)->isa_instptr(); | |
| 689 NOT_PRODUCT(if (ex_type==NULL) tty->print_cr("*** Exception not InstPtr")); | |
| 690 if (ex_type == NULL) | |
| 691 ex_type = TypeOopPtr::make_from_klass(env()->Throwable_klass())->is_instptr(); | |
| 692 | |
| 693 // determine potential exception handlers | |
| 694 ciExceptionHandlerStream handlers(method(), bci(), | |
| 695 ex_type->klass()->as_instance_klass(), | |
| 696 ex_type->klass_is_exact()); | |
| 697 | |
| 698 // Start executing from the given throw state. (Keep its stack, for now.) | |
| 699 // Get the exception oop as known at compile time. | |
| 700 ex_node = use_exception_state(ex_map); | |
| 701 | |
| 702 // Get the exception oop klass from its header | |
| 703 Node* ex_klass_node = NULL; | |
| 704 if (has_ex_handler() && !ex_type->klass_is_exact()) { | |
| 705 Node* p = basic_plus_adr( ex_node, ex_node, oopDesc::klass_offset_in_bytes()); | |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
67
diff
changeset
|
706 ex_klass_node = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeInstPtr::KLASS, TypeKlassPtr::OBJECT) ); |
| 0 | 707 |
| 708 // Compute the exception klass a little more cleverly. | |
| 709 // Obvious solution is to simple do a LoadKlass from the 'ex_node'. | |
| 710 // However, if the ex_node is a PhiNode, I'm going to do a LoadKlass for | |
| 711 // each arm of the Phi. If I know something clever about the exceptions | |
| 712 // I'm loading the class from, I can replace the LoadKlass with the | |
| 713 // klass constant for the exception oop. | |
| 714 if( ex_node->is_Phi() ) { | |
| 715 ex_klass_node = new (C, ex_node->req()) PhiNode( ex_node->in(0), TypeKlassPtr::OBJECT ); | |
| 716 for( uint i = 1; i < ex_node->req(); i++ ) { | |
| 717 Node* p = basic_plus_adr( ex_node->in(i), ex_node->in(i), oopDesc::klass_offset_in_bytes() ); | |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
67
diff
changeset
|
718 Node* k = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeInstPtr::KLASS, TypeKlassPtr::OBJECT) ); |
| 0 | 719 ex_klass_node->init_req( i, k ); |
| 720 } | |
| 721 _gvn.set_type(ex_klass_node, TypeKlassPtr::OBJECT); | |
| 722 | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 // Scan the exception table for applicable handlers. | |
| 727 // If none, we can call rethrow() and be done! | |
| 728 // If precise (loaded with no subklasses), insert a D.S. style | |
| 729 // pointer compare to the correct handler and loop back. | |
| 730 // If imprecise, switch to the Rethrow VM-call style handling. | |
| 731 | |
| 732 int remaining = handlers.count_remaining(); | |
| 733 | |
| 734 // iterate through all entries sequentially | |
| 735 for (;!handlers.is_done(); handlers.next()) { | |
| 736 ciExceptionHandler* handler = handlers.handler(); | |
| 737 | |
| 738 if (handler->is_rethrow()) { | |
| 739 // If we fell off the end of the table without finding an imprecise | |
| 740 // exception klass (and without finding a generic handler) then we | |
| 741 // know this exception is not handled in this method. We just rethrow | |
| 742 // the exception into the caller. | |
| 743 throw_to_exit(make_exception_state(ex_node)); | |
| 744 return; | |
| 745 } | |
| 746 | |
| 747 // exception handler bci range covers throw_bci => investigate further | |
| 748 int handler_bci = handler->handler_bci(); | |
| 749 | |
| 750 if (remaining == 1) { | |
| 751 push_ex_oop(ex_node); // Push exception oop for handler | |
| 752 #ifndef PRODUCT | |
| 753 if (PrintOpto && WizardMode) { | |
| 754 tty->print_cr(" Catching every inline exception bci:%d -> handler_bci:%d", bci(), handler_bci); | |
| 755 } | |
| 756 #endif | |
| 757 merge_exception(handler_bci); // jump to handler | |
| 758 return; // No more handling to be done here! | |
| 759 } | |
| 760 | |
| 1344 | 761 // Get the handler's klass |
| 0 | 762 ciInstanceKlass* klass = handler->catch_klass(); |
| 1344 | 763 |
| 764 if (!klass->is_loaded()) { // klass is not loaded? | |
| 765 // fall through into catch_call_exceptions which will emit a | |
| 766 // handler with an uncommon trap. | |
| 767 break; | |
| 0 | 768 } |
| 769 | |
| 770 if (klass->is_interface()) // should not happen, but... | |
| 771 break; // bail out | |
| 772 | |
| 1344 | 773 // Check the type of the exception against the catch type |
| 0 | 774 const TypeKlassPtr *tk = TypeKlassPtr::make(klass); |
| 775 Node* con = _gvn.makecon(tk); | |
| 1344 | 776 Node* not_subtype_ctrl = gen_subtype_check(ex_klass_node, con); |
| 777 if (!stopped()) { | |
| 778 PreserveJVMState pjvms(this); | |
| 779 const TypeInstPtr* tinst = TypeOopPtr::make_from_klass_unique(klass)->cast_to_ptr_type(TypePtr::NotNull)->is_instptr(); | |
| 780 assert(klass->has_subklass() || tinst->klass_is_exact(), "lost exactness"); | |
| 0 | 781 Node* ex_oop = _gvn.transform(new (C, 2) CheckCastPPNode(control(), ex_node, tinst)); |
| 782 push_ex_oop(ex_oop); // Push exception oop for handler | |
| 783 #ifndef PRODUCT | |
| 784 if (PrintOpto && WizardMode) { | |
| 785 tty->print(" Catching inline exception bci:%d -> handler_bci:%d -- ", bci(), handler_bci); | |
| 786 klass->print_name(); | |
| 787 tty->cr(); | |
| 788 } | |
| 789 #endif | |
| 790 merge_exception(handler_bci); | |
| 791 } | |
| 1344 | 792 set_control(not_subtype_ctrl); |
| 0 | 793 |
| 794 // Come here if exception does not match handler. | |
| 795 // Carry on with more handler checks. | |
| 796 --remaining; | |
| 797 } | |
| 798 | |
| 799 assert(!stopped(), "you should return if you finish the chain"); | |
| 800 | |
| 801 // Oops, need to call into the VM to resolve the klasses at runtime. | |
| 802 // Note: This call must not deoptimize, since it is not a real at this bci! | |
| 803 kill_dead_locals(); | |
| 804 | |
| 805 make_runtime_call(RC_NO_LEAF | RC_MUST_THROW, | |
| 806 OptoRuntime::rethrow_Type(), | |
| 807 OptoRuntime::rethrow_stub(), | |
| 808 NULL, NULL, | |
| 809 ex_node); | |
| 810 | |
| 811 // Rethrow is a pure call, no side effects, only a result. | |
| 812 // The result cannot be allocated, so we use I_O | |
| 813 | |
| 814 // Catch exceptions from the rethrow | |
| 815 catch_call_exceptions(handlers); | |
| 816 } | |
| 817 | |
| 818 | |
| 819 // (Note: Moved add_debug_info into GraphKit::add_safepoint_edges.) | |
| 820 | |
| 821 | |
| 822 #ifndef PRODUCT | |
| 823 void Parse::count_compiled_calls(bool at_method_entry, bool is_inline) { | |
| 824 if( CountCompiledCalls ) { | |
| 825 if( at_method_entry ) { | |
| 826 // bump invocation counter if top method (for statistics) | |
| 827 if (CountCompiledCalls && depth() == 1) { | |
| 828 const TypeInstPtr* addr_type = TypeInstPtr::make(method()); | |
| 829 Node* adr1 = makecon(addr_type); | |
| 830 Node* adr2 = basic_plus_adr(adr1, adr1, in_bytes(methodOopDesc::compiled_invocation_counter_offset())); | |
| 831 increment_counter(adr2); | |
| 832 } | |
| 833 } else if (is_inline) { | |
| 834 switch (bc()) { | |
| 835 case Bytecodes::_invokevirtual: increment_counter(SharedRuntime::nof_inlined_calls_addr()); break; | |
| 836 case Bytecodes::_invokeinterface: increment_counter(SharedRuntime::nof_inlined_interface_calls_addr()); break; | |
| 837 case Bytecodes::_invokestatic: | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
367
diff
changeset
|
838 case Bytecodes::_invokedynamic: |
| 0 | 839 case Bytecodes::_invokespecial: increment_counter(SharedRuntime::nof_inlined_static_calls_addr()); break; |
| 840 default: fatal("unexpected call bytecode"); | |
| 841 } | |
| 842 } else { | |
| 843 switch (bc()) { | |
| 844 case Bytecodes::_invokevirtual: increment_counter(SharedRuntime::nof_normal_calls_addr()); break; | |
| 845 case Bytecodes::_invokeinterface: increment_counter(SharedRuntime::nof_interface_calls_addr()); break; | |
| 846 case Bytecodes::_invokestatic: | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
367
diff
changeset
|
847 case Bytecodes::_invokedynamic: |
| 0 | 848 case Bytecodes::_invokespecial: increment_counter(SharedRuntime::nof_static_calls_addr()); break; |
| 849 default: fatal("unexpected call bytecode"); | |
| 850 } | |
| 851 } | |
| 852 } | |
| 853 } | |
| 854 #endif //PRODUCT | |
| 855 | |
| 856 | |
| 857 // Identify possible target method and inlining style | |
| 858 ciMethod* Parse::optimize_inlining(ciMethod* caller, int bci, ciInstanceKlass* klass, | |
| 859 ciMethod *dest_method, const TypeOopPtr* receiver_type) { | |
| 860 // only use for virtual or interface calls | |
| 861 | |
| 862 // If it is obviously final, do not bother to call find_monomorphic_target, | |
| 863 // because the class hierarchy checks are not needed, and may fail due to | |
| 864 // incompletely loaded classes. Since we do our own class loading checks | |
| 865 // in this module, we may confidently bind to any method. | |
| 866 if (dest_method->can_be_statically_bound()) { | |
| 867 return dest_method; | |
| 868 } | |
| 869 | |
| 870 // Attempt to improve the receiver | |
| 871 bool actual_receiver_is_exact = false; | |
| 872 ciInstanceKlass* actual_receiver = klass; | |
| 873 if (receiver_type != NULL) { | |
| 874 // Array methods are all inherited from Object, and are monomorphic. | |
| 875 if (receiver_type->isa_aryptr() && | |
| 876 dest_method->holder() == env()->Object_klass()) { | |
| 877 return dest_method; | |
| 878 } | |
| 879 | |
| 880 // All other interesting cases are instance klasses. | |
| 881 if (!receiver_type->isa_instptr()) { | |
| 882 return NULL; | |
| 883 } | |
| 884 | |
| 885 ciInstanceKlass *ikl = receiver_type->klass()->as_instance_klass(); | |
| 886 if (ikl->is_loaded() && ikl->is_initialized() && !ikl->is_interface() && | |
|
367
194b8e3a2fc4
6384206: Phis which are later unneeded are impairing our ability to inline based on static types
never
parents:
196
diff
changeset
|
887 (ikl == actual_receiver || ikl->is_subtype_of(actual_receiver))) { |
| 0 | 888 // ikl is a same or better type than the original actual_receiver, |
| 889 // e.g. static receiver from bytecodes. | |
| 890 actual_receiver = ikl; | |
| 891 // Is the actual_receiver exact? | |
| 892 actual_receiver_is_exact = receiver_type->klass_is_exact(); | |
| 893 } | |
| 894 } | |
| 895 | |
| 896 ciInstanceKlass* calling_klass = caller->holder(); | |
| 897 ciMethod* cha_monomorphic_target = dest_method->find_monomorphic_target(calling_klass, klass, actual_receiver); | |
| 898 if (cha_monomorphic_target != NULL) { | |
| 899 assert(!cha_monomorphic_target->is_abstract(), ""); | |
| 900 // Look at the method-receiver type. Does it add "too much information"? | |
| 901 ciKlass* mr_klass = cha_monomorphic_target->holder(); | |
| 902 const Type* mr_type = TypeInstPtr::make(TypePtr::BotPTR, mr_klass); | |
| 903 if (receiver_type == NULL || !receiver_type->higher_equal(mr_type)) { | |
| 904 // Calling this method would include an implicit cast to its holder. | |
| 905 // %%% Not yet implemented. Would throw minor asserts at present. | |
| 906 // %%% The most common wins are already gained by +UseUniqueSubclasses. | |
| 907 // To fix, put the higher_equal check at the call of this routine, | |
| 908 // and add a CheckCastPP to the receiver. | |
| 909 if (TraceDependencies) { | |
| 910 tty->print_cr("found unique CHA method, but could not cast up"); | |
| 911 tty->print(" method = "); | |
| 912 cha_monomorphic_target->print(); | |
| 913 tty->cr(); | |
| 914 } | |
| 915 if (C->log() != NULL) { | |
| 916 C->log()->elem("missed_CHA_opportunity klass='%d' method='%d'", | |
| 917 C->log()->identify(klass), | |
| 918 C->log()->identify(cha_monomorphic_target)); | |
| 919 } | |
| 920 cha_monomorphic_target = NULL; | |
| 921 } | |
| 922 } | |
| 923 if (cha_monomorphic_target != NULL) { | |
| 924 // Hardwiring a virtual. | |
| 925 // If we inlined because CHA revealed only a single target method, | |
| 926 // then we are dependent on that target method not getting overridden | |
| 927 // by dynamic class loading. Be sure to test the "static" receiver | |
| 928 // dest_method here, as opposed to the actual receiver, which may | |
| 929 // falsely lead us to believe that the receiver is final or private. | |
| 930 C->dependencies()->assert_unique_concrete_method(actual_receiver, cha_monomorphic_target); | |
| 931 return cha_monomorphic_target; | |
| 932 } | |
| 933 | |
| 934 // If the type is exact, we can still bind the method w/o a vcall. | |
| 935 // (This case comes after CHA so we can see how much extra work it does.) | |
| 936 if (actual_receiver_is_exact) { | |
| 937 // In case of evolution, there is a dependence on every inlined method, since each | |
| 938 // such method can be changed when its class is redefined. | |
| 939 ciMethod* exact_method = dest_method->resolve_invoke(calling_klass, actual_receiver); | |
| 940 if (exact_method != NULL) { | |
| 941 #ifndef PRODUCT | |
| 942 if (PrintOpto) { | |
| 943 tty->print(" Calling method via exact type @%d --- ", bci); | |
| 944 exact_method->print_name(); | |
| 945 tty->cr(); | |
| 946 } | |
| 947 #endif | |
| 948 return exact_method; | |
| 949 } | |
| 950 } | |
| 951 | |
| 952 return NULL; | |
| 953 } |