J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
Mikael Vidstedt | 769dd50 | 2012-10-09 10:09:34 -0700 | [diff] [blame] | 2 | * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | * |
Erik Trimble | ba7c173 | 2010-05-27 19:08:38 -0700 | [diff] [blame] | 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. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 25 | #include "precompiled.hpp" |
Yumin Qi | f712e12 | 2012-11-12 14:03:53 -0800 | [diff] [blame] | 26 | #include "ci/ciReplay.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 27 | #include "classfile/systemDictionary.hpp" |
| 28 | #include "classfile/vmSymbols.hpp" |
Christian Thalinger | f51036e | 2011-03-28 03:58:07 -0700 | [diff] [blame] | 29 | #include "compiler/compileBroker.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 30 | #include "compiler/compileLog.hpp" |
| 31 | #include "interpreter/linkResolver.hpp" |
| 32 | #include "oops/objArrayKlass.hpp" |
| 33 | #include "opto/callGenerator.hpp" |
| 34 | #include "opto/parse.hpp" |
| 35 | #include "runtime/handles.inline.hpp" |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 36 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 37 | //============================================================================= |
| 38 | //------------------------------InlineTree------------------------------------- |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 39 | InlineTree::InlineTree(Compile* c, |
| 40 | const InlineTree *caller_tree, ciMethod* callee, |
| 41 | JVMState* caller_jvms, int caller_bci, |
| 42 | float site_invoke_ratio, int max_inline_level) : |
| 43 | C(c), |
| 44 | _caller_jvms(caller_jvms), |
| 45 | _caller_tree((InlineTree*) caller_tree), |
| 46 | _method(callee), |
| 47 | _site_invoke_ratio(site_invoke_ratio), |
| 48 | _max_inline_level(max_inline_level), |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 49 | _count_inline_bcs(method()->code_size_for_inlining()), |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 50 | _subtrees(c->comp_arena(), 2, 0, NULL), |
| 51 | _msg(NULL) |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 52 | { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 53 | NOT_PRODUCT(_count_inlines = 0;) |
| 54 | if (_caller_jvms != NULL) { |
| 55 | // Keep a private copy of the caller_jvms: |
| 56 | _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms()); |
| 57 | _caller_jvms->set_bci(caller_jvms->bci()); |
Changpeng Fang | ae00753 | 2009-07-31 17:12:33 -0700 | [diff] [blame] | 58 | assert(!caller_jvms->should_reexecute(), "there should be no reexecute bytecode with inlining"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 59 | } |
| 60 | assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS"); |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 61 | assert((caller_tree == NULL ? 0 : caller_tree->stack_depth() + 1) == stack_depth(), "correct (redundant) depth parameter"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 62 | assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter"); |
| 63 | if (UseOldInlining) { |
| 64 | // Update hierarchical counts, count_inline_bcs() and count_inlines() |
| 65 | InlineTree *caller = (InlineTree *)caller_tree; |
| 66 | for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) { |
| 67 | caller->_count_inline_bcs += count_inline_bcs(); |
| 68 | NOT_PRODUCT(caller->_count_inlines++;) |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 73 | InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 74 | float site_invoke_ratio, int max_inline_level) : |
| 75 | C(c), |
| 76 | _caller_jvms(caller_jvms), |
| 77 | _caller_tree(NULL), |
| 78 | _method(callee_method), |
| 79 | _site_invoke_ratio(site_invoke_ratio), |
| 80 | _max_inline_level(max_inline_level), |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 81 | _count_inline_bcs(method()->code_size()), |
| 82 | _msg(NULL) |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 83 | { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 84 | NOT_PRODUCT(_count_inlines = 0;) |
| 85 | assert(!UseOldInlining, "do not use for old stuff"); |
| 86 | } |
| 87 | |
Vladimir Kozlov | 2ed62e8 | 2013-05-13 14:36:39 -0700 | [diff] [blame] | 88 | /** |
| 89 | * Return true when EA is ON and a java constructor is called or |
| 90 | * a super constructor is called from an inlined java constructor. |
| 91 | * Also return true for boxing methods. |
| 92 | */ |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 93 | static bool is_init_with_ea(ciMethod* callee_method, |
| 94 | ciMethod* caller_method, Compile* C) { |
Vladimir Kozlov | 2ed62e8 | 2013-05-13 14:36:39 -0700 | [diff] [blame] | 95 | if (!C->do_escape_analysis() || !EliminateAllocations) { |
| 96 | return false; // EA is off |
| 97 | } |
| 98 | if (callee_method->is_initializer()) { |
| 99 | return true; // constuctor |
| 100 | } |
| 101 | if (caller_method->is_initializer() && |
| 102 | caller_method != C->method() && |
| 103 | caller_method->holder()->is_subclass_of(callee_method->holder())) { |
| 104 | return true; // super constructor is called from inlined constructor |
| 105 | } |
| 106 | if (C->eliminate_boxing() && callee_method->is_boxing_method()) { |
| 107 | return true; |
| 108 | } |
| 109 | return false; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 110 | } |
| 111 | |
Vladimir Kozlov | 2ed62e8 | 2013-05-13 14:36:39 -0700 | [diff] [blame] | 112 | /** |
| 113 | * Force inlining unboxing accessor. |
| 114 | */ |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 115 | static bool is_unboxing_method(ciMethod* callee_method, Compile* C) { |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 116 | return C->eliminate_boxing() && callee_method->is_unboxing_method(); |
| 117 | } |
| 118 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 119 | // positive filter: should callee be inlined? |
| 120 | bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method, |
| 121 | int caller_bci, ciCallProfile& profile, |
| 122 | WarmCallInfo* wci_result) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 123 | // Allows targeted inlining |
| 124 | if(callee_method->should_inline()) { |
| 125 | *wci_result = *(WarmCallInfo::always_hot()); |
Vladimir Kozlov | 0ccb284 | 2013-09-24 16:08:00 -0700 | [diff] [blame] | 126 | if (C->print_inlining() && Verbose) { |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 127 | CompileTask::print_inline_indent(inline_level()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 128 | tty->print_cr("Inlined method is hot: "); |
| 129 | } |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 130 | set_msg("force inline by CompilerOracle"); |
| 131 | return true; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 132 | } |
| 133 | |
Christian Thalinger | 05b60b3 | 2011-08-31 01:40:45 -0700 | [diff] [blame] | 134 | int size = callee_method->code_size_for_inlining(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 135 | |
| 136 | // Check for too many throws (and not too huge) |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 137 | if(callee_method->interpreter_throwout_count() > InlineThrowCount && |
| 138 | size < InlineThrowMaxSize ) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 139 | wci_result->set_profit(wci_result->profit() * 100); |
Vladimir Kozlov | 0ccb284 | 2013-09-24 16:08:00 -0700 | [diff] [blame] | 140 | if (C->print_inlining() && Verbose) { |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 141 | CompileTask::print_inline_indent(inline_level()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 142 | tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count()); |
| 143 | } |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 144 | set_msg("many throws"); |
| 145 | return true; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | if (!UseOldInlining) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 149 | set_msg("!UseOldInlining"); |
| 150 | return true; // size and frequency are represented in a new way |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 151 | } |
| 152 | |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 153 | int default_max_inline_size = C->max_inline_size(); |
| 154 | int inline_small_code_size = InlineSmallCode / 4; |
| 155 | int max_inline_size = default_max_inline_size; |
| 156 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 157 | int call_site_count = method()->scale_count(profile.count()); |
| 158 | int invoke_count = method()->interpreter_invocation_count(); |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 159 | |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 160 | assert(invoke_count != 0, "require invocation count greater than zero"); |
| 161 | int freq = call_site_count / invoke_count; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 162 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 163 | // bump the max size if the call is frequent |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 164 | if ((freq >= InlineFrequencyRatio) || |
| 165 | (call_site_count >= InlineFrequencyCount) || |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 166 | is_unboxing_method(callee_method, C) || |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 167 | is_init_with_ea(callee_method, caller_method, C)) { |
| 168 | |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 169 | max_inline_size = C->freq_inline_size(); |
| 170 | if (size <= max_inline_size && TraceFrequencyInlining) { |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 171 | CompileTask::print_inline_indent(inline_level()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 172 | tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count); |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 173 | CompileTask::print_inline_indent(inline_level()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 174 | callee_method->print(); |
| 175 | tty->cr(); |
| 176 | } |
| 177 | } else { |
| 178 | // Not hot. Check for medium-sized pre-existing nmethod at cold sites. |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 179 | if (callee_method->has_compiled_code() && |
Vladimir Kozlov | 3679ebd | 2013-03-19 10:56:33 -0700 | [diff] [blame] | 180 | callee_method->instructions_size() > inline_small_code_size) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 181 | set_msg("already compiled into a medium method"); |
| 182 | return false; |
Vladimir Kozlov | 3679ebd | 2013-03-19 10:56:33 -0700 | [diff] [blame] | 183 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 184 | } |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 185 | if (size > max_inline_size) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 186 | if (max_inline_size > default_max_inline_size) { |
| 187 | set_msg("hot method too big"); |
| 188 | } else { |
| 189 | set_msg("too big"); |
| 190 | } |
| 191 | return false; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 192 | } |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 193 | return true; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 197 | // negative filter: should callee NOT be inlined? |
| 198 | bool InlineTree::should_not_inline(ciMethod *callee_method, |
| 199 | ciMethod* caller_method, |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 200 | JVMState* jvms, |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 201 | WarmCallInfo* wci_result) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 202 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 203 | const char* fail_msg = NULL; |
| 204 | |
| 205 | // First check all inlining restrictions which are required for correctness |
| 206 | if ( callee_method->is_abstract()) { |
| 207 | fail_msg = "abstract method"; // // note: we allow ik->is_abstract() |
| 208 | } else if (!callee_method->holder()->is_initialized()) { |
| 209 | fail_msg = "method holder not initialized"; |
| 210 | } else if ( callee_method->is_native()) { |
| 211 | fail_msg = "native method"; |
| 212 | } else if ( callee_method->dont_inline()) { |
| 213 | fail_msg = "don't inline by annotation"; |
| 214 | } |
| 215 | |
| 216 | if (!UseOldInlining) { |
| 217 | if (fail_msg != NULL) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 218 | *wci_result = *(WarmCallInfo::always_cold()); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 219 | set_msg(fail_msg); |
| 220 | return true; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | if (callee_method->has_unloaded_classes_in_signature()) { |
| 224 | wci_result->set_profit(wci_result->profit() * 0.1); |
| 225 | } |
| 226 | |
| 227 | // don't inline exception code unless the top method belongs to an |
| 228 | // exception class |
| 229 | if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 230 | ciMethod* top_method = jvms->caller() != NULL ? jvms->caller()->of_depth(1)->method() : method(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 231 | if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { |
| 232 | wci_result->set_profit(wci_result->profit() * 0.1); |
| 233 | } |
| 234 | } |
| 235 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 236 | if (callee_method->has_compiled_code() && |
Yumin Qi | f712e12 | 2012-11-12 14:03:53 -0800 | [diff] [blame] | 237 | callee_method->instructions_size() > InlineSmallCode) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 238 | wci_result->set_profit(wci_result->profit() * 0.1); |
| 239 | // %%% adjust wci_result->size()? |
| 240 | } |
| 241 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 242 | return false; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 243 | } |
| 244 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 245 | // one more inlining restriction |
| 246 | if (fail_msg == NULL && callee_method->has_unloaded_classes_in_signature()) { |
| 247 | fail_msg = "unloaded signature classes"; |
| 248 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 249 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 250 | if (fail_msg != NULL) { |
| 251 | set_msg(fail_msg); |
| 252 | return true; |
| 253 | } |
| 254 | |
| 255 | // ignore heuristic controls on inlining |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 256 | if (callee_method->should_inline()) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 257 | set_msg("force inline by CompilerOracle"); |
| 258 | return false; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 259 | } |
| 260 | |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 261 | if (callee_method->should_not_inline()) { |
| 262 | set_msg("disallowed by CompilerOracle"); |
| 263 | return true; |
| 264 | } |
| 265 | |
| 266 | #ifndef PRODUCT |
| 267 | if (ciReplay::should_not_inline(callee_method)) { |
| 268 | set_msg("disallowed by ciReplay"); |
| 269 | return true; |
| 270 | } |
| 271 | #endif |
| 272 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 273 | // Now perform checks which are heuristic |
| 274 | |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 275 | if (is_unboxing_method(callee_method, C)) { |
| 276 | // Inline unboxing methods. |
| 277 | return false; |
| 278 | } |
| 279 | |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 280 | if (!callee_method->force_inline()) { |
| 281 | if (callee_method->has_compiled_code() && |
| 282 | callee_method->instructions_size() > InlineSmallCode) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 283 | set_msg("already compiled into a big method"); |
| 284 | return true; |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 285 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 286 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 287 | |
| 288 | // don't inline exception code unless the top method belongs to an |
| 289 | // exception class |
| 290 | if (caller_tree() != NULL && |
| 291 | callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { |
| 292 | const InlineTree *top = this; |
| 293 | while (top->caller_tree() != NULL) top = top->caller_tree(); |
| 294 | ciInstanceKlass* k = top->method()->holder(); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 295 | if (!k->is_subclass_of(C->env()->Throwable_klass())) { |
| 296 | set_msg("exception method"); |
| 297 | return true; |
| 298 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | // use frequency-based objections only for non-trivial methods |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 302 | if (callee_method->code_size() <= MaxTrivialSize) { |
| 303 | return false; |
| 304 | } |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 305 | |
| 306 | // don't use counts with -Xcomp or CTW |
| 307 | if (UseInterpreter && !CompileTheWorld) { |
| 308 | |
| 309 | if (!callee_method->has_compiled_code() && |
| 310 | !callee_method->was_executed_more_than(0)) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 311 | set_msg("never executed"); |
| 312 | return true; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | if (is_init_with_ea(callee_method, caller_method, C)) { |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 316 | // Escape Analysis: inline all executed constructors |
Vladimir Kozlov | b4977e8 | 2013-05-08 15:08:01 -0700 | [diff] [blame] | 317 | return false; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 318 | } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold, |
| 319 | CompileThreshold >> 1))) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 320 | set_msg("executed < MinInliningThreshold times"); |
| 321 | return true; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 322 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 325 | return false; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | //-----------------------------try_to_inline----------------------------------- |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 329 | // return true if ok |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 330 | // Relocated from "InliningClosure::try_to_inline" |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 331 | bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method, |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 332 | int caller_bci, JVMState* jvms, ciCallProfile& profile, |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 333 | WarmCallInfo* wci_result, bool& should_delay) { |
| 334 | |
| 335 | // Old algorithm had funny accumulating BC-size counters |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 336 | if (UseOldInlining && ClipInlining |
| 337 | && (int)count_inline_bcs() >= DesiredMethodLimit) { |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 338 | if (!callee_method->force_inline() || !IncrementalInline) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 339 | set_msg("size > DesiredMethodLimit"); |
| 340 | return false; |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 341 | } else if (!C->inlining_incrementally()) { |
| 342 | should_delay = true; |
| 343 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 344 | } |
| 345 | |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 346 | if (!should_inline(callee_method, caller_method, caller_bci, profile, |
| 347 | wci_result)) { |
| 348 | return false; |
| 349 | } |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 350 | if (should_not_inline(callee_method, caller_method, jvms, wci_result)) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 351 | return false; |
| 352 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 353 | |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 354 | if (InlineAccessors && callee_method->is_accessor()) { |
| 355 | // accessor methods are not subject to any of the following limits. |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 356 | set_msg("accessor"); |
| 357 | return true; |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 358 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 359 | |
| 360 | // suppress a few checks for accessors and trivial methods |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 361 | if (callee_method->code_size() > MaxTrivialSize) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 362 | |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 363 | // don't inline into giant methods |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 364 | if (C->over_inlining_cutoff()) { |
| 365 | if ((!callee_method->force_inline() && !caller_method->is_compiled_lambda_form()) |
| 366 | || !IncrementalInline) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 367 | set_msg("NodeCountInliningCutoff"); |
| 368 | return false; |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 369 | } else { |
| 370 | should_delay = true; |
| 371 | } |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | if ((!UseInterpreter || CompileTheWorld) && |
| 375 | is_init_with_ea(callee_method, caller_method, C)) { |
| 376 | |
| 377 | // Escape Analysis stress testing when running Xcomp or CTW: |
| 378 | // inline constructors even if they are not reached. |
| 379 | |
| 380 | } else if (profile.count() == 0) { |
| 381 | // don't inline unreached call sites |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 382 | set_msg("call site not reached"); |
| 383 | return false; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 384 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 385 | } |
| 386 | |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 387 | if (!C->do_inlining() && InlineAccessors) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 388 | set_msg("not an accessor"); |
| 389 | return false; |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 390 | } |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 391 | if (inline_level() > _max_inline_level) { |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 392 | if (!callee_method->force_inline() || !IncrementalInline) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 393 | set_msg("inlining too deep"); |
| 394 | return false; |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 395 | } else if (!C->inlining_incrementally()) { |
| 396 | should_delay = true; |
| 397 | } |
Vladimir Kozlov | 9ec574b | 2008-03-07 11:09:13 -0800 | [diff] [blame] | 398 | } |
Christian Thalinger | f51036e | 2011-03-28 03:58:07 -0700 | [diff] [blame] | 399 | |
Christian Thalinger | 6bfb306 | 2011-05-02 00:55:09 -0700 | [diff] [blame] | 400 | // detect direct and indirect recursive inlining |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 401 | { |
Christian Thalinger | 6bfb306 | 2011-05-02 00:55:09 -0700 | [diff] [blame] | 402 | // count the current method and the callee |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 403 | const bool is_compiled_lambda_form = callee_method->is_compiled_lambda_form(); |
| 404 | int inline_level = 0; |
| 405 | if (!is_compiled_lambda_form) { |
| 406 | if (method() == callee_method) { |
| 407 | inline_level++; |
| 408 | } |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 409 | } |
Christian Thalinger | 6bfb306 | 2011-05-02 00:55:09 -0700 | [diff] [blame] | 410 | // count callers of current method and callee |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 411 | Node* callee_argument0 = is_compiled_lambda_form ? jvms->map()->argument(jvms, 0)->uncast() : NULL; |
| 412 | for (JVMState* j = jvms->caller(); j != NULL && j->has_method(); j = j->caller()) { |
| 413 | if (j->method() == callee_method) { |
| 414 | if (is_compiled_lambda_form) { |
| 415 | // Since compiled lambda forms are heavily reused we allow recursive inlining. If it is truly |
| 416 | // a recursion (using the same "receiver") we limit inlining otherwise we can easily blow the |
| 417 | // compiler stack. |
| 418 | Node* caller_argument0 = j->map()->argument(j, 0)->uncast(); |
| 419 | if (caller_argument0 == callee_argument0) { |
| 420 | inline_level++; |
| 421 | } |
| 422 | } else { |
| 423 | inline_level++; |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 424 | } |
Christian Thalinger | f51036e | 2011-03-28 03:58:07 -0700 | [diff] [blame] | 425 | } |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 426 | } |
| 427 | if (inline_level > MaxRecursiveInlineLevel) { |
| 428 | set_msg("recursive inlining is too deep"); |
| 429 | return false; |
Christian Thalinger | f51036e | 2011-03-28 03:58:07 -0700 | [diff] [blame] | 430 | } |
| 431 | } |
| 432 | |
Christian Thalinger | 05b60b3 | 2011-08-31 01:40:45 -0700 | [diff] [blame] | 433 | int size = callee_method->code_size_for_inlining(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 434 | |
| 435 | if (UseOldInlining && ClipInlining |
| 436 | && (int)count_inline_bcs() + size >= DesiredMethodLimit) { |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 437 | if (!callee_method->force_inline() || !IncrementalInline) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 438 | set_msg("size > DesiredMethodLimit"); |
| 439 | return false; |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 440 | } else if (!C->inlining_incrementally()) { |
| 441 | should_delay = true; |
| 442 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | // ok, inline this method |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 446 | return true; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | //------------------------------pass_initial_checks---------------------------- |
| 450 | bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) { |
| 451 | ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL; |
| 452 | // Check if a callee_method was suggested |
| 453 | if( callee_method == NULL ) return false; |
| 454 | // Check if klass of callee_method is loaded |
| 455 | if( !callee_holder->is_loaded() ) return false; |
| 456 | if( !callee_holder->is_initialized() ) return false; |
| 457 | if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) { |
| 458 | // Checks that constant pool's call site has been visited |
| 459 | // stricter than callee_holder->is_initialized() |
| 460 | ciBytecodeStream iter(caller_method); |
| 461 | iter.force_bci(caller_bci); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 462 | Bytecodes::Code call_bc = iter.cur_bc(); |
Christian Thalinger | 375527d | 2010-01-05 13:05:58 +0100 | [diff] [blame] | 463 | // An invokedynamic instruction does not have a klass. |
| 464 | if (call_bc != Bytecodes::_invokedynamic) { |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 465 | int index = iter.get_index_u2_cpcache(); |
Christian Thalinger | 375527d | 2010-01-05 13:05:58 +0100 | [diff] [blame] | 466 | if (!caller_method->is_klass_loaded(index, true)) { |
| 467 | return false; |
| 468 | } |
| 469 | // Try to do constant pool resolution if running Xcomp |
| 470 | if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) { |
| 471 | return false; |
| 472 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 473 | } |
| 474 | } |
| 475 | // We will attempt to see if a class/field/etc got properly loaded. If it |
| 476 | // did not, it may attempt to throw an exception during our probing. Catch |
| 477 | // and ignore such exceptions and do not attempt to compile the method. |
| 478 | if( callee_method->should_exclude() ) return false; |
| 479 | |
| 480 | return true; |
| 481 | } |
| 482 | |
Christian Thalinger | fcc2a86 | 2011-09-01 01:31:25 -0700 | [diff] [blame] | 483 | //------------------------------check_can_parse-------------------------------- |
| 484 | const char* InlineTree::check_can_parse(ciMethod* callee) { |
| 485 | // Certain methods cannot be parsed at all: |
| 486 | if ( callee->is_native()) return "native method"; |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 487 | if ( callee->is_abstract()) return "abstract method"; |
Christian Thalinger | fcc2a86 | 2011-09-01 01:31:25 -0700 | [diff] [blame] | 488 | if (!callee->can_be_compiled()) return "not compilable (disabled)"; |
| 489 | if (!callee->has_balanced_monitors()) return "not compilable (unbalanced monitors)"; |
| 490 | if ( callee->get_flow_analysis()->failing()) return "not compilable (flow analysis failed)"; |
| 491 | return NULL; |
| 492 | } |
| 493 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 494 | //------------------------------print_inlining--------------------------------- |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 495 | void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci, |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 496 | bool success) const { |
| 497 | const char* inline_msg = msg(); |
| 498 | assert(inline_msg != NULL, "just checking"); |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 499 | if (C->log() != NULL) { |
| 500 | if (success) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 501 | C->log()->inline_success(inline_msg); |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 502 | } else { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 503 | C->log()->inline_fail(inline_msg); |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 504 | } |
| 505 | } |
Vladimir Kozlov | 0ccb284 | 2013-09-24 16:08:00 -0700 | [diff] [blame] | 506 | if (C->print_inlining()) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 507 | C->print_inlining(callee_method, inline_level(), caller_bci, inline_msg); |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 508 | if (callee_method == NULL) tty->print(" callee not monotonic or profiled"); |
| 509 | if (Verbose && callee_method) { |
| 510 | const InlineTree *top = this; |
| 511 | while( top->caller_tree() != NULL ) { top = top->caller_tree(); } |
| 512 | //tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count()); |
| 513 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 514 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 515 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 516 | |
| 517 | //------------------------------ok_to_inline----------------------------------- |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 518 | WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci, bool& should_delay) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 519 | assert(callee_method != NULL, "caller checks for optimized virtual!"); |
Roland Westrelin | 73d6d41 | 2012-12-23 17:08:22 +0100 | [diff] [blame] | 520 | assert(!should_delay, "should be initialized to false"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 521 | #ifdef ASSERT |
| 522 | // Make sure the incoming jvms has the same information content as me. |
| 523 | // This means that we can eventually make this whole class AllStatic. |
| 524 | if (jvms->caller() == NULL) { |
| 525 | assert(_caller_jvms == NULL, "redundant instance state"); |
| 526 | } else { |
| 527 | assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state"); |
| 528 | } |
| 529 | assert(_method == jvms->method(), "redundant instance state"); |
| 530 | #endif |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 531 | int caller_bci = jvms->bci(); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 532 | ciMethod* caller_method = jvms->method(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 533 | |
Christian Thalinger | fcc2a86 | 2011-09-01 01:31:25 -0700 | [diff] [blame] | 534 | // Do some initial checks. |
| 535 | if (!pass_initial_checks(caller_method, caller_bci, callee_method)) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 536 | set_msg("failed initial checks"); |
| 537 | print_inlining(callee_method, caller_bci, false /* !success */); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 538 | return NULL; |
| 539 | } |
| 540 | |
Christian Thalinger | fcc2a86 | 2011-09-01 01:31:25 -0700 | [diff] [blame] | 541 | // Do some parse checks. |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 542 | set_msg(check_can_parse(callee_method)); |
| 543 | if (msg() != NULL) { |
| 544 | print_inlining(callee_method, caller_bci, false /* !success */); |
Christian Thalinger | fcc2a86 | 2011-09-01 01:31:25 -0700 | [diff] [blame] | 545 | return NULL; |
| 546 | } |
| 547 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 548 | // Check if inlining policy says no. |
| 549 | WarmCallInfo wci = *(initial_wci); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 550 | bool success = try_to_inline(callee_method, caller_method, caller_bci, |
Christian Thalinger | bfc53b6 | 2013-10-04 10:11:48 -0700 | [diff] [blame^] | 551 | jvms, profile, &wci, should_delay); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 552 | |
| 553 | #ifndef PRODUCT |
| 554 | if (UseOldInlining && InlineWarmCalls |
Vladimir Kozlov | 0ccb284 | 2013-09-24 16:08:00 -0700 | [diff] [blame] | 555 | && (PrintOpto || C->print_inlining())) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 556 | bool cold = wci.is_cold(); |
| 557 | bool hot = !cold && wci.is_hot(); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 558 | bool old_cold = !success; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 559 | if (old_cold != cold || (Verbose || WizardMode)) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 560 | if (msg() == NULL) { |
| 561 | set_msg("OK"); |
| 562 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 563 | tty->print(" OldInlining= %4s : %s\n WCI=", |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 564 | old_cold ? "cold" : "hot", msg()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 565 | wci.print(); |
| 566 | } |
| 567 | } |
| 568 | #endif |
| 569 | if (UseOldInlining) { |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 570 | if (success) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 571 | wci = *(WarmCallInfo::always_hot()); |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 572 | } else { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 573 | wci = *(WarmCallInfo::always_cold()); |
Igor Ignatyev | 1a9e6be | 2013-02-01 03:02:01 -0800 | [diff] [blame] | 574 | } |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 575 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 576 | if (!InlineWarmCalls) { |
| 577 | if (!wci.is_cold() && !wci.is_hot()) { |
| 578 | // Do not inline the warm calls. |
| 579 | wci = *(WarmCallInfo::always_cold()); |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | if (!wci.is_cold()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 584 | // Inline! |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 585 | if (msg() == NULL) { |
| 586 | set_msg("inline (hot)"); |
| 587 | } |
| 588 | print_inlining(callee_method, caller_bci, true /* success */); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 589 | if (UseOldInlining) |
| 590 | build_inline_tree_for_callee(callee_method, jvms, caller_bci); |
| 591 | if (InlineWarmCalls && !wci.is_hot()) |
| 592 | return new (C) WarmCallInfo(wci); // copy to heap |
| 593 | return WarmCallInfo::always_hot(); |
| 594 | } |
| 595 | |
| 596 | // Do not inline |
Igor Ignatyev | 50efb85 | 2013-02-27 05:58:48 -0800 | [diff] [blame] | 597 | if (msg() == NULL) { |
| 598 | set_msg("too cold to inline"); |
| 599 | } |
| 600 | print_inlining(callee_method, caller_bci, false /* !success */ ); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 601 | return NULL; |
| 602 | } |
| 603 | |
| 604 | //------------------------------compute_callee_frequency----------------------- |
| 605 | float InlineTree::compute_callee_frequency( int caller_bci ) const { |
| 606 | int count = method()->interpreter_call_site_count(caller_bci); |
| 607 | int invcnt = method()->interpreter_invocation_count(); |
| 608 | float freq = (float)count/(float)invcnt; |
| 609 | // Call-site count / interpreter invocation count, scaled recursively. |
| 610 | // Always between 0.0 and 1.0. Represents the percentage of the method's |
| 611 | // total execution time used at this call site. |
| 612 | |
| 613 | return freq; |
| 614 | } |
| 615 | |
| 616 | //------------------------------build_inline_tree_for_callee------------------- |
| 617 | InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) { |
| 618 | float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci); |
| 619 | // Attempt inlining. |
| 620 | InlineTree* old_ilt = callee_at(caller_bci, callee_method); |
| 621 | if (old_ilt != NULL) { |
| 622 | return old_ilt; |
| 623 | } |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 624 | int max_inline_level_adjust = 0; |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 625 | if (caller_jvms->method() != NULL) { |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 626 | if (caller_jvms->method()->is_compiled_lambda_form()) |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 627 | max_inline_level_adjust += 1; // don't count actions in MH or indy adapter frames |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 628 | else if (callee_method->is_method_handle_intrinsic() || |
| 629 | callee_method->is_compiled_lambda_form()) { |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 630 | max_inline_level_adjust += 1; // don't count method handle calls from java.lang.invoke implem |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 631 | } |
Vladimir Kozlov | 0ccb284 | 2013-09-24 16:08:00 -0700 | [diff] [blame] | 632 | if (max_inline_level_adjust != 0 && C->print_inlining() && (Verbose || WizardMode)) { |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 633 | CompileTask::print_inline_indent(inline_level()); |
Christian Thalinger | fee8d7f | 2011-05-10 00:45:03 -0700 | [diff] [blame] | 634 | tty->print_cr(" \\-> discounting inline depth"); |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 635 | } |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 636 | if (max_inline_level_adjust != 0 && C->log()) { |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 637 | int id1 = C->log()->identify(caller_jvms->method()); |
| 638 | int id2 = C->log()->identify(callee_method); |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 639 | C->log()->elem("inline_level_discount caller='%d' callee='%d'", id1, id2); |
John R Rose | 6fbdf20 | 2010-01-08 13:58:49 -0800 | [diff] [blame] | 640 | } |
| 641 | } |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 642 | InlineTree* ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _max_inline_level + max_inline_level_adjust); |
| 643 | _subtrees.append(ilt); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 644 | |
| 645 | NOT_PRODUCT( _count_inlines += 1; ) |
| 646 | |
| 647 | return ilt; |
| 648 | } |
| 649 | |
| 650 | |
| 651 | //---------------------------------------callee_at----------------------------- |
| 652 | InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const { |
| 653 | for (int i = 0; i < _subtrees.length(); i++) { |
| 654 | InlineTree* sub = _subtrees.at(i); |
| 655 | if (sub->caller_bci() == bci && callee == sub->method()) { |
| 656 | return sub; |
| 657 | } |
| 658 | } |
| 659 | return NULL; |
| 660 | } |
| 661 | |
| 662 | |
| 663 | //------------------------------build_inline_tree_root------------------------- |
| 664 | InlineTree *InlineTree::build_inline_tree_root() { |
| 665 | Compile* C = Compile::current(); |
| 666 | |
| 667 | // Root of inline tree |
Tom Rodriguez | 15161b8 | 2011-06-22 14:45:37 -0700 | [diff] [blame] | 668 | InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 669 | |
| 670 | return ilt; |
| 671 | } |
| 672 | |
| 673 | |
| 674 | //-------------------------find_subtree_from_root----------------------------- |
| 675 | // Given a jvms, which determines a call chain from the root method, |
| 676 | // find the corresponding inline tree. |
| 677 | // Note: This method will be removed or replaced as InlineTree goes away. |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 678 | InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 679 | InlineTree* iltp = root; |
| 680 | uint depth = jvms && jvms->has_method() ? jvms->depth() : 0; |
| 681 | for (uint d = 1; d <= depth; d++) { |
| 682 | JVMState* jvmsp = jvms->of_depth(d); |
| 683 | // Select the corresponding subtree for this bci. |
| 684 | assert(jvmsp->method() == iltp->method(), "tree still in sync"); |
| 685 | ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method(); |
| 686 | InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 687 | if (sub == NULL) { |
| 688 | if (d == depth) { |
| 689 | sub = iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 690 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 691 | guarantee(sub != NULL, "should be a sub-ilt here"); |
| 692 | return sub; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 693 | } |
| 694 | iltp = sub; |
| 695 | } |
| 696 | return iltp; |
| 697 | } |
Tom Rodriguez | e3afdf1 | 2011-09-11 14:48:24 -0700 | [diff] [blame] | 698 | |
| 699 | |
| 700 | |
| 701 | #ifndef PRODUCT |
| 702 | void InlineTree::print_impl(outputStream* st, int indent) const { |
| 703 | for (int i = 0; i < indent; i++) st->print(" "); |
| 704 | st->print(" @ %d ", caller_bci()); |
| 705 | method()->print_short_name(st); |
| 706 | st->cr(); |
| 707 | |
| 708 | for (int i = 0 ; i < _subtrees.length(); i++) { |
| 709 | _subtrees.at(i)->print_impl(st, indent + 2); |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | void InlineTree::print_value_on(outputStream* st) const { |
| 714 | print_impl(st, 2); |
| 715 | } |
| 716 | #endif |