Mercurial > hg > truffle
annotate src/share/vm/opto/bytecodeInfo.cpp @ 6653:2d5407ae1ac4
intermediate materialization is now removed during lowering of an InstanceOfNode that has a single usage which is an IfNode in the same block
lowered InstanceOfNode snippet graph is shared among similar usages of the InstanceOfNode
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 30 Oct 2012 23:58:53 +0100 |
parents | 957c266d8bc5 |
children | e522a00b91aa |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2011, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
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28 #include "compiler/compileBroker.hpp" |
1972 | 29 #include "compiler/compileLog.hpp" |
30 #include "interpreter/linkResolver.hpp" | |
31 #include "oops/objArrayKlass.hpp" | |
32 #include "opto/callGenerator.hpp" | |
33 #include "opto/parse.hpp" | |
34 #include "runtime/handles.inline.hpp" | |
0 | 35 |
36 //============================================================================= | |
37 //------------------------------InlineTree------------------------------------- | |
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38 InlineTree::InlineTree(Compile* c, |
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39 const InlineTree *caller_tree, ciMethod* callee, |
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40 JVMState* caller_jvms, int caller_bci, |
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41 float site_invoke_ratio, int max_inline_level) : |
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42 C(c), |
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43 _caller_jvms(caller_jvms), |
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44 _caller_tree((InlineTree*) caller_tree), |
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45 _method(callee), |
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46 _site_invoke_ratio(site_invoke_ratio), |
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47 _max_inline_level(max_inline_level), |
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48 _count_inline_bcs(method()->code_size_for_inlining()) |
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49 { |
0 | 50 NOT_PRODUCT(_count_inlines = 0;) |
51 if (_caller_jvms != NULL) { | |
52 // Keep a private copy of the caller_jvms: | |
53 _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms()); | |
54 _caller_jvms->set_bci(caller_jvms->bci()); | |
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55 assert(!caller_jvms->should_reexecute(), "there should be no reexecute bytecode with inlining"); |
0 | 56 } |
57 assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS"); | |
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58 assert((caller_tree == NULL ? 0 : caller_tree->stack_depth() + 1) == stack_depth(), "correct (redundant) depth parameter"); |
0 | 59 assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter"); |
60 if (UseOldInlining) { | |
61 // Update hierarchical counts, count_inline_bcs() and count_inlines() | |
62 InlineTree *caller = (InlineTree *)caller_tree; | |
63 for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) { | |
64 caller->_count_inline_bcs += count_inline_bcs(); | |
65 NOT_PRODUCT(caller->_count_inlines++;) | |
66 } | |
67 } | |
68 } | |
69 | |
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70 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, |
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71 float site_invoke_ratio, int max_inline_level) : |
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72 C(c), |
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73 _caller_jvms(caller_jvms), |
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74 _caller_tree(NULL), |
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75 _method(callee_method), |
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76 _site_invoke_ratio(site_invoke_ratio), |
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77 _max_inline_level(max_inline_level), |
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78 _count_inline_bcs(method()->code_size()) |
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79 { |
0 | 80 NOT_PRODUCT(_count_inlines = 0;) |
81 assert(!UseOldInlining, "do not use for old stuff"); | |
82 } | |
83 | |
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84 static bool is_init_with_ea(ciMethod* callee_method, |
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85 ciMethod* caller_method, Compile* C) { |
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86 // True when EA is ON and a java constructor is called or |
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87 // a super constructor is called from an inlined java constructor. |
244 | 88 return C->do_escape_analysis() && EliminateAllocations && |
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89 ( callee_method->is_initializer() || |
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90 (caller_method->is_initializer() && |
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91 caller_method != C->method() && |
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92 caller_method->holder()->is_subclass_of(callee_method->holder())) |
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93 ); |
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94 } |
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95 |
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96 // positive filter: should callee be inlined? returns NULL, if yes, or rejection msg |
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97 const char* InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) const { |
0 | 98 // Allows targeted inlining |
99 if(callee_method->should_inline()) { | |
100 *wci_result = *(WarmCallInfo::always_hot()); | |
101 if (PrintInlining && Verbose) { | |
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102 CompileTask::print_inline_indent(inline_level()); |
0 | 103 tty->print_cr("Inlined method is hot: "); |
104 } | |
105 return NULL; | |
106 } | |
107 | |
108 // positive filter: should send be inlined? returns NULL (--> yes) | |
109 // or rejection msg | |
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110 int size = callee_method->code_size_for_inlining(); |
0 | 111 |
112 // Check for too many throws (and not too huge) | |
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113 if(callee_method->interpreter_throwout_count() > InlineThrowCount && |
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114 size < InlineThrowMaxSize ) { |
0 | 115 wci_result->set_profit(wci_result->profit() * 100); |
116 if (PrintInlining && Verbose) { | |
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117 CompileTask::print_inline_indent(inline_level()); |
0 | 118 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count()); |
119 } | |
120 return NULL; | |
121 } | |
122 | |
123 if (!UseOldInlining) { | |
124 return NULL; // size and frequency are represented in a new way | |
125 } | |
126 | |
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127 int default_max_inline_size = C->max_inline_size(); |
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128 int inline_small_code_size = InlineSmallCode / 4; |
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129 int max_inline_size = default_max_inline_size; |
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130 |
0 | 131 int call_site_count = method()->scale_count(profile.count()); |
132 int invoke_count = method()->interpreter_invocation_count(); | |
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133 |
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134 assert(invoke_count != 0, "require invocation count greater than zero"); |
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135 int freq = call_site_count / invoke_count; |
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136 |
0 | 137 // bump the max size if the call is frequent |
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138 if ((freq >= InlineFrequencyRatio) || |
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139 (call_site_count >= InlineFrequencyCount) || |
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140 is_init_with_ea(callee_method, caller_method, C)) { |
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141 |
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142 max_inline_size = C->freq_inline_size(); |
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143 if (size <= max_inline_size && TraceFrequencyInlining) { |
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144 CompileTask::print_inline_indent(inline_level()); |
0 | 145 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count); |
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146 CompileTask::print_inline_indent(inline_level()); |
0 | 147 callee_method->print(); |
148 tty->cr(); | |
149 } | |
150 } else { | |
151 // Not hot. Check for medium-sized pre-existing nmethod at cold sites. | |
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152 if (callee_method->has_compiled_code() && |
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153 callee_method->instructions_size(CompLevel_full_optimization) > inline_small_code_size) |
0 | 154 return "already compiled into a medium method"; |
155 } | |
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156 if (size > max_inline_size) { |
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157 if (max_inline_size > default_max_inline_size) |
0 | 158 return "hot method too big"; |
159 return "too big"; | |
160 } | |
161 return NULL; | |
162 } | |
163 | |
164 | |
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165 // negative filter: should callee NOT be inlined? returns NULL, ok to inline, or rejection msg |
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166 const char* InlineTree::should_not_inline(ciMethod *callee_method, ciMethod* caller_method, WarmCallInfo* wci_result) const { |
0 | 167 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg |
168 if (!UseOldInlining) { | |
169 const char* fail = NULL; | |
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170 if ( callee_method->is_abstract()) fail = "abstract method"; |
0 | 171 // note: we allow ik->is_abstract() |
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172 if (!callee_method->holder()->is_initialized()) fail = "method holder not initialized"; |
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173 if ( callee_method->is_native()) fail = "native method"; |
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174 if ( callee_method->dont_inline()) fail = "don't inline by annotation"; |
0 | 175 |
176 if (fail) { | |
177 *wci_result = *(WarmCallInfo::always_cold()); | |
178 return fail; | |
179 } | |
180 | |
181 if (callee_method->has_unloaded_classes_in_signature()) { | |
182 wci_result->set_profit(wci_result->profit() * 0.1); | |
183 } | |
184 | |
185 // don't inline exception code unless the top method belongs to an | |
186 // exception class | |
187 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
188 ciMethod* top_method = caller_jvms() ? caller_jvms()->of_depth(1)->method() : method(); | |
189 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
190 wci_result->set_profit(wci_result->profit() * 0.1); | |
191 } | |
192 } | |
193 | |
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194 if (callee_method->has_compiled_code() && |
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195 callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) { |
0 | 196 wci_result->set_profit(wci_result->profit() * 0.1); |
197 // %%% adjust wci_result->size()? | |
198 } | |
199 | |
200 return NULL; | |
201 } | |
202 | |
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203 // First check all inlining restrictions which are required for correctness |
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204 if ( callee_method->is_abstract()) return "abstract method"; |
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205 // note: we allow ik->is_abstract() |
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206 if (!callee_method->holder()->is_initialized()) return "method holder not initialized"; |
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207 if ( callee_method->is_native()) return "native method"; |
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208 if ( callee_method->dont_inline()) return "don't inline by annotation"; |
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209 if ( callee_method->has_unloaded_classes_in_signature()) return "unloaded signature classes"; |
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210 |
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211 if (callee_method->force_inline() || callee_method->should_inline()) { |
0 | 212 // ignore heuristic controls on inlining |
213 return NULL; | |
214 } | |
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215 if (callee_method->should_not_inline()) { |
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216 return "disallowed by CompilerOracle"; |
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217 } |
0 | 218 |
219 // Now perform checks which are heuristic | |
220 | |
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221 if (callee_method->has_compiled_code() && |
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222 callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) { |
0 | 223 return "already compiled into a big method"; |
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224 } |
0 | 225 |
226 // don't inline exception code unless the top method belongs to an | |
227 // exception class | |
228 if (caller_tree() != NULL && | |
229 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
230 const InlineTree *top = this; | |
231 while (top->caller_tree() != NULL) top = top->caller_tree(); | |
232 ciInstanceKlass* k = top->method()->holder(); | |
233 if (!k->is_subclass_of(C->env()->Throwable_klass())) | |
234 return "exception method"; | |
235 } | |
236 | |
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237 if (callee_method->should_not_inline()) { |
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238 return "disallowed by CompilerOracle"; |
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239 } |
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240 |
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241 if (UseStringCache) { |
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242 // Do not inline StringCache::profile() method used only at the beginning. |
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243 if (callee_method->name() == ciSymbol::profile_name() && |
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244 callee_method->holder()->name() == ciSymbol::java_lang_StringCache()) { |
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245 return "profiling method"; |
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246 } |
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247 } |
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248 |
0 | 249 // use frequency-based objections only for non-trivial methods |
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250 if (callee_method->code_size() <= MaxTrivialSize) return NULL; |
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251 |
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252 // don't use counts with -Xcomp or CTW |
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253 if (UseInterpreter && !CompileTheWorld) { |
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254 |
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255 if (!callee_method->has_compiled_code() && |
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256 !callee_method->was_executed_more_than(0)) { |
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257 return "never executed"; |
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258 } |
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259 |
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260 if (is_init_with_ea(callee_method, caller_method, C)) { |
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261 |
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262 // Escape Analysis: inline all executed constructors |
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263 |
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264 } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold, |
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265 CompileThreshold >> 1))) { |
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266 return "executed < MinInliningThreshold times"; |
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267 } |
0 | 268 } |
269 | |
270 return NULL; | |
271 } | |
272 | |
273 //-----------------------------try_to_inline----------------------------------- | |
274 // return NULL if ok, reason for not inlining otherwise | |
275 // Relocated from "InliningClosure::try_to_inline" | |
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276 const char* InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) { |
0 | 277 |
278 // Old algorithm had funny accumulating BC-size counters | |
279 if (UseOldInlining && ClipInlining | |
280 && (int)count_inline_bcs() >= DesiredMethodLimit) { | |
281 return "size > DesiredMethodLimit"; | |
282 } | |
283 | |
284 const char *msg = NULL; | |
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285 msg = should_inline(callee_method, caller_method, caller_bci, profile, wci_result); |
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286 if (msg != NULL) |
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287 return msg; |
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288 |
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289 msg = should_not_inline(callee_method, caller_method, wci_result); |
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290 if (msg != NULL) |
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291 return msg; |
0 | 292 |
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293 if (InlineAccessors && callee_method->is_accessor()) { |
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294 // accessor methods are not subject to any of the following limits. |
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295 return NULL; |
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296 } |
0 | 297 |
298 // suppress a few checks for accessors and trivial methods | |
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299 if (callee_method->code_size() > MaxTrivialSize) { |
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300 |
0 | 301 // don't inline into giant methods |
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302 if (C->unique() > (uint)NodeCountInliningCutoff) { |
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303 return "NodeCountInliningCutoff"; |
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304 } |
0 | 305 |
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306 if ((!UseInterpreter || CompileTheWorld) && |
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307 is_init_with_ea(callee_method, caller_method, C)) { |
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308 |
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309 // Escape Analysis stress testing when running Xcomp or CTW: |
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310 // inline constructors even if they are not reached. |
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311 |
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312 } else if (profile.count() == 0) { |
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313 // don't inline unreached call sites |
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314 return "call site not reached"; |
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315 } |
0 | 316 } |
317 | |
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318 if (!C->do_inlining() && InlineAccessors) { |
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319 return "not an accessor"; |
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320 } |
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321 if (inline_level() > _max_inline_level) { |
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322 return "inlining too deep"; |
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323 } |
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324 |
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325 // detect direct and indirect recursive inlining |
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326 if (!callee_method->is_compiled_lambda_form()) { |
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327 // count the current method and the callee |
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328 int inline_level = (method() == callee_method) ? 1 : 0; |
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329 if (inline_level > MaxRecursiveInlineLevel) |
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330 return "recursively inlining too deep"; |
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331 // count callers of current method and callee |
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332 JVMState* jvms = caller_jvms(); |
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333 while (jvms != NULL && jvms->has_method()) { |
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334 if (jvms->method() == callee_method) { |
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335 inline_level++; |
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336 if (inline_level > MaxRecursiveInlineLevel) |
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337 return "recursively inlining too deep"; |
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338 } |
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339 jvms = jvms->caller(); |
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340 } |
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341 } |
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342 |
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343 int size = callee_method->code_size_for_inlining(); |
0 | 344 |
345 if (UseOldInlining && ClipInlining | |
346 && (int)count_inline_bcs() + size >= DesiredMethodLimit) { | |
347 return "size > DesiredMethodLimit"; | |
348 } | |
349 | |
350 // ok, inline this method | |
351 return NULL; | |
352 } | |
353 | |
354 //------------------------------pass_initial_checks---------------------------- | |
355 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) { | |
356 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL; | |
357 // Check if a callee_method was suggested | |
358 if( callee_method == NULL ) return false; | |
359 // Check if klass of callee_method is loaded | |
360 if( !callee_holder->is_loaded() ) return false; | |
361 if( !callee_holder->is_initialized() ) return false; | |
362 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) { | |
363 // Checks that constant pool's call site has been visited | |
364 // stricter than callee_holder->is_initialized() | |
365 ciBytecodeStream iter(caller_method); | |
366 iter.force_bci(caller_bci); | |
367 Bytecodes::Code call_bc = iter.cur_bc(); | |
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368 // An invokedynamic instruction does not have a klass. |
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369 if (call_bc != Bytecodes::_invokedynamic) { |
1565 | 370 int index = iter.get_index_u2_cpcache(); |
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371 if (!caller_method->is_klass_loaded(index, true)) { |
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372 return false; |
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373 } |
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374 // Try to do constant pool resolution if running Xcomp |
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375 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) { |
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376 return false; |
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377 } |
0 | 378 } |
379 } | |
380 // We will attempt to see if a class/field/etc got properly loaded. If it | |
381 // did not, it may attempt to throw an exception during our probing. Catch | |
382 // and ignore such exceptions and do not attempt to compile the method. | |
383 if( callee_method->should_exclude() ) return false; | |
384 | |
385 return true; | |
386 } | |
387 | |
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388 //------------------------------check_can_parse-------------------------------- |
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389 const char* InlineTree::check_can_parse(ciMethod* callee) { |
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390 // Certain methods cannot be parsed at all: |
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391 if ( callee->is_native()) return "native method"; |
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392 if ( callee->is_abstract()) return "abstract method"; |
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393 if (!callee->can_be_compiled()) return "not compilable (disabled)"; |
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394 if (!callee->has_balanced_monitors()) return "not compilable (unbalanced monitors)"; |
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395 if ( callee->get_flow_analysis()->failing()) return "not compilable (flow analysis failed)"; |
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396 return NULL; |
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397 } |
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398 |
0 | 399 //------------------------------print_inlining--------------------------------- |
400 // Really, the failure_msg can be a success message also. | |
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401 void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci, const char* failure_msg) const { |
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402 CompileTask::print_inlining(callee_method, inline_level(), caller_bci, failure_msg ? failure_msg : "inline"); |
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403 if (callee_method == NULL) tty->print(" callee not monotonic or profiled"); |
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404 if (Verbose && callee_method) { |
0 | 405 const InlineTree *top = this; |
406 while( top->caller_tree() != NULL ) { top = top->caller_tree(); } | |
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407 //tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count()); |
0 | 408 } |
409 } | |
410 | |
411 //------------------------------ok_to_inline----------------------------------- | |
412 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci) { | |
413 assert(callee_method != NULL, "caller checks for optimized virtual!"); | |
414 #ifdef ASSERT | |
415 // Make sure the incoming jvms has the same information content as me. | |
416 // This means that we can eventually make this whole class AllStatic. | |
417 if (jvms->caller() == NULL) { | |
418 assert(_caller_jvms == NULL, "redundant instance state"); | |
419 } else { | |
420 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state"); | |
421 } | |
422 assert(_method == jvms->method(), "redundant instance state"); | |
423 #endif | |
424 const char *failure_msg = NULL; | |
425 int caller_bci = jvms->bci(); | |
426 ciMethod *caller_method = jvms->method(); | |
427 | |
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428 // Do some initial checks. |
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429 if (!pass_initial_checks(caller_method, caller_bci, callee_method)) { |
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430 if (PrintInlining) print_inlining(callee_method, caller_bci, "failed initial checks"); |
0 | 431 return NULL; |
432 } | |
433 | |
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434 // Do some parse checks. |
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435 failure_msg = check_can_parse(callee_method); |
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436 if (failure_msg != NULL) { |
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437 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg); |
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438 return NULL; |
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439 } |
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440 |
0 | 441 // Check if inlining policy says no. |
442 WarmCallInfo wci = *(initial_wci); | |
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443 failure_msg = try_to_inline(callee_method, caller_method, caller_bci, profile, &wci); |
0 | 444 if (failure_msg != NULL && C->log() != NULL) { |
445 C->log()->begin_elem("inline_fail reason='"); | |
446 C->log()->text("%s", failure_msg); | |
447 C->log()->end_elem("'"); | |
448 } | |
449 | |
450 #ifndef PRODUCT | |
451 if (UseOldInlining && InlineWarmCalls | |
452 && (PrintOpto || PrintOptoInlining || PrintInlining)) { | |
453 bool cold = wci.is_cold(); | |
454 bool hot = !cold && wci.is_hot(); | |
455 bool old_cold = (failure_msg != NULL); | |
456 if (old_cold != cold || (Verbose || WizardMode)) { | |
457 tty->print(" OldInlining= %4s : %s\n WCI=", | |
458 old_cold ? "cold" : "hot", failure_msg ? failure_msg : "OK"); | |
459 wci.print(); | |
460 } | |
461 } | |
462 #endif | |
463 if (UseOldInlining) { | |
464 if (failure_msg == NULL) | |
465 wci = *(WarmCallInfo::always_hot()); | |
466 else | |
467 wci = *(WarmCallInfo::always_cold()); | |
468 } | |
469 if (!InlineWarmCalls) { | |
470 if (!wci.is_cold() && !wci.is_hot()) { | |
471 // Do not inline the warm calls. | |
472 wci = *(WarmCallInfo::always_cold()); | |
473 } | |
474 } | |
475 | |
476 if (!wci.is_cold()) { | |
477 // In -UseOldInlining, the failure_msg may also be a success message. | |
478 if (failure_msg == NULL) failure_msg = "inline (hot)"; | |
479 | |
480 // Inline! | |
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481 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg); |
0 | 482 if (UseOldInlining) |
483 build_inline_tree_for_callee(callee_method, jvms, caller_bci); | |
484 if (InlineWarmCalls && !wci.is_hot()) | |
485 return new (C) WarmCallInfo(wci); // copy to heap | |
486 return WarmCallInfo::always_hot(); | |
487 } | |
488 | |
489 // Do not inline | |
490 if (failure_msg == NULL) failure_msg = "too cold to inline"; | |
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491 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg); |
0 | 492 return NULL; |
493 } | |
494 | |
495 //------------------------------compute_callee_frequency----------------------- | |
496 float InlineTree::compute_callee_frequency( int caller_bci ) const { | |
497 int count = method()->interpreter_call_site_count(caller_bci); | |
498 int invcnt = method()->interpreter_invocation_count(); | |
499 float freq = (float)count/(float)invcnt; | |
500 // Call-site count / interpreter invocation count, scaled recursively. | |
501 // Always between 0.0 and 1.0. Represents the percentage of the method's | |
502 // total execution time used at this call site. | |
503 | |
504 return freq; | |
505 } | |
506 | |
507 //------------------------------build_inline_tree_for_callee------------------- | |
508 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) { | |
509 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci); | |
510 // Attempt inlining. | |
511 InlineTree* old_ilt = callee_at(caller_bci, callee_method); | |
512 if (old_ilt != NULL) { | |
513 return old_ilt; | |
514 } | |
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515 int max_inline_level_adjust = 0; |
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516 if (caller_jvms->method() != NULL) { |
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517 if (caller_jvms->method()->is_compiled_lambda_form()) |
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518 max_inline_level_adjust += 1; // don't count actions in MH or indy adapter frames |
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519 else if (callee_method->is_method_handle_intrinsic() || |
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520 callee_method->is_compiled_lambda_form()) { |
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521 max_inline_level_adjust += 1; // don't count method handle calls from java.lang.invoke implem |
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522 } |
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523 if (max_inline_level_adjust != 0 && PrintInlining && (Verbose || WizardMode)) { |
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524 CompileTask::print_inline_indent(inline_level()); |
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525 tty->print_cr(" \\-> discounting inline depth"); |
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526 } |
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527 if (max_inline_level_adjust != 0 && C->log()) { |
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528 int id1 = C->log()->identify(caller_jvms->method()); |
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529 int id2 = C->log()->identify(callee_method); |
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530 C->log()->elem("inline_level_discount caller='%d' callee='%d'", id1, id2); |
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531 } |
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532 } |
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533 InlineTree* ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _max_inline_level + max_inline_level_adjust); |
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534 _subtrees.append(ilt); |
0 | 535 |
536 NOT_PRODUCT( _count_inlines += 1; ) | |
537 | |
538 return ilt; | |
539 } | |
540 | |
541 | |
542 //---------------------------------------callee_at----------------------------- | |
543 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const { | |
544 for (int i = 0; i < _subtrees.length(); i++) { | |
545 InlineTree* sub = _subtrees.at(i); | |
546 if (sub->caller_bci() == bci && callee == sub->method()) { | |
547 return sub; | |
548 } | |
549 } | |
550 return NULL; | |
551 } | |
552 | |
553 | |
554 //------------------------------build_inline_tree_root------------------------- | |
555 InlineTree *InlineTree::build_inline_tree_root() { | |
556 Compile* C = Compile::current(); | |
557 | |
558 // Root of inline tree | |
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559 InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel); |
0 | 560 |
561 return ilt; | |
562 } | |
563 | |
564 | |
565 //-------------------------find_subtree_from_root----------------------------- | |
566 // Given a jvms, which determines a call chain from the root method, | |
567 // find the corresponding inline tree. | |
568 // Note: This method will be removed or replaced as InlineTree goes away. | |
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569 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee) { |
0 | 570 InlineTree* iltp = root; |
571 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0; | |
572 for (uint d = 1; d <= depth; d++) { | |
573 JVMState* jvmsp = jvms->of_depth(d); | |
574 // Select the corresponding subtree for this bci. | |
575 assert(jvmsp->method() == iltp->method(), "tree still in sync"); | |
576 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method(); | |
577 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee); | |
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578 if (sub == NULL) { |
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579 if (d == depth) { |
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580 sub = iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci()); |
0 | 581 } |
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582 guarantee(sub != NULL, "should be a sub-ilt here"); |
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583 return sub; |
0 | 584 } |
585 iltp = sub; | |
586 } | |
587 return iltp; | |
588 } | |
3939 | 589 |
590 | |
591 | |
592 #ifndef PRODUCT | |
593 void InlineTree::print_impl(outputStream* st, int indent) const { | |
594 for (int i = 0; i < indent; i++) st->print(" "); | |
595 st->print(" @ %d ", caller_bci()); | |
596 method()->print_short_name(st); | |
597 st->cr(); | |
598 | |
599 for (int i = 0 ; i < _subtrees.length(); i++) { | |
600 _subtrees.at(i)->print_impl(st, indent + 2); | |
601 } | |
602 } | |
603 | |
604 void InlineTree::print_value_on(outputStream* st) const { | |
605 print_impl(st, 2); | |
606 } | |
607 #endif |