Mercurial > hg > truffle
annotate src/share/vm/opto/bytecodeInfo.cpp @ 14257:f7eeaff95a25
8029464: assert(ft == ttkp->cast_to_ptr_type(jtkp->ptr()) || ft->isa_narrowoop()
Summary: Fix the assert check for narrow klass pointer.
Reviewed-by: twisti, kvn
author | roland |
---|---|
date | Mon, 13 Jan 2014 16:16:25 -0800 |
parents | 183bd5c00828 |
children | 17ec2d5c43e8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2013, 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" |
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26 #include "ci/ciReplay.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
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29 #include "compiler/compileBroker.hpp" |
1972 | 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" | |
0 | 36 |
37 //============================================================================= | |
38 //------------------------------InlineTree------------------------------------- | |
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39 InlineTree::InlineTree(Compile* c, |
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40 const InlineTree *caller_tree, ciMethod* callee, |
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41 JVMState* caller_jvms, int caller_bci, |
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42 float site_invoke_ratio, int max_inline_level) : |
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43 C(c), |
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44 _caller_jvms(caller_jvms), |
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45 _caller_tree((InlineTree*) caller_tree), |
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46 _method(callee), |
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47 _site_invoke_ratio(site_invoke_ratio), |
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48 _max_inline_level(max_inline_level), |
7473 | 49 _count_inline_bcs(method()->code_size_for_inlining()), |
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50 _subtrees(c->comp_arena(), 2, 0, NULL), |
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51 _msg(NULL) |
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52 { |
14232 | 53 #ifndef PRODUCT |
54 _count_inlines = 0; | |
55 _forced_inline = false; | |
56 #endif | |
0 | 57 if (_caller_jvms != NULL) { |
58 // Keep a private copy of the caller_jvms: | |
59 _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms()); | |
60 _caller_jvms->set_bci(caller_jvms->bci()); | |
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61 assert(!caller_jvms->should_reexecute(), "there should be no reexecute bytecode with inlining"); |
0 | 62 } |
63 assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS"); | |
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64 assert((caller_tree == NULL ? 0 : caller_tree->stack_depth() + 1) == stack_depth(), "correct (redundant) depth parameter"); |
0 | 65 assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter"); |
66 if (UseOldInlining) { | |
67 // Update hierarchical counts, count_inline_bcs() and count_inlines() | |
68 InlineTree *caller = (InlineTree *)caller_tree; | |
69 for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) { | |
70 caller->_count_inline_bcs += count_inline_bcs(); | |
71 NOT_PRODUCT(caller->_count_inlines++;) | |
72 } | |
73 } | |
74 } | |
75 | |
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76 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, |
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77 float site_invoke_ratio, int max_inline_level) : |
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78 C(c), |
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79 _caller_jvms(caller_jvms), |
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80 _caller_tree(NULL), |
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81 _method(callee_method), |
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82 _site_invoke_ratio(site_invoke_ratio), |
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83 _max_inline_level(max_inline_level), |
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84 _count_inline_bcs(method()->code_size()), |
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85 _msg(NULL) |
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86 { |
14232 | 87 #ifndef PRODUCT |
88 _count_inlines = 0; | |
89 _forced_inline = false; | |
90 #endif | |
0 | 91 assert(!UseOldInlining, "do not use for old stuff"); |
92 } | |
93 | |
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94 /** |
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95 * Return true when EA is ON and a java constructor is called or |
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96 * a super constructor is called from an inlined java constructor. |
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97 * Also return true for boxing methods. |
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98 */ |
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99 static bool is_init_with_ea(ciMethod* callee_method, |
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100 ciMethod* caller_method, Compile* C) { |
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101 if (!C->do_escape_analysis() || !EliminateAllocations) { |
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102 return false; // EA is off |
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103 } |
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104 if (callee_method->is_initializer()) { |
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105 return true; // constuctor |
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106 } |
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107 if (caller_method->is_initializer() && |
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108 caller_method != C->method() && |
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109 caller_method->holder()->is_subclass_of(callee_method->holder())) { |
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110 return true; // super constructor is called from inlined constructor |
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111 } |
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112 if (C->eliminate_boxing() && callee_method->is_boxing_method()) { |
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113 return true; |
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114 } |
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115 return false; |
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116 } |
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117 |
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118 /** |
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119 * Force inlining unboxing accessor. |
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120 */ |
10278 | 121 static bool is_unboxing_method(ciMethod* callee_method, Compile* C) { |
122 return C->eliminate_boxing() && callee_method->is_unboxing_method(); | |
123 } | |
124 | |
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125 // positive filter: should callee be inlined? |
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126 bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method, |
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127 int caller_bci, ciCallProfile& profile, |
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128 WarmCallInfo* wci_result) { |
0 | 129 // Allows targeted inlining |
130 if(callee_method->should_inline()) { | |
131 *wci_result = *(WarmCallInfo::always_hot()); | |
12295 | 132 if (C->print_inlining() && Verbose) { |
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133 CompileTask::print_inline_indent(inline_level()); |
0 | 134 tty->print_cr("Inlined method is hot: "); |
135 } | |
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136 set_msg("force inline by CompilerOracle"); |
14232 | 137 _forced_inline = true; |
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138 return true; |
0 | 139 } |
140 | |
14232 | 141 #ifndef PRODUCT |
142 int inline_depth = inline_level()+1; | |
143 if (ciReplay::should_inline(C->replay_inline_data(), callee_method, caller_bci, inline_depth)) { | |
144 set_msg("force inline by ciReplay"); | |
145 _forced_inline = true; | |
146 return true; | |
147 } | |
148 #endif | |
149 | |
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150 int size = callee_method->code_size_for_inlining(); |
0 | 151 |
152 // Check for too many throws (and not too huge) | |
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153 if(callee_method->interpreter_throwout_count() > InlineThrowCount && |
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154 size < InlineThrowMaxSize ) { |
0 | 155 wci_result->set_profit(wci_result->profit() * 100); |
12295 | 156 if (C->print_inlining() && Verbose) { |
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157 CompileTask::print_inline_indent(inline_level()); |
0 | 158 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count()); |
159 } | |
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160 set_msg("many throws"); |
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161 return true; |
0 | 162 } |
163 | |
164 if (!UseOldInlining) { | |
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165 set_msg("!UseOldInlining"); |
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166 return true; // size and frequency are represented in a new way |
0 | 167 } |
168 | |
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169 int default_max_inline_size = C->max_inline_size(); |
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170 int inline_small_code_size = InlineSmallCode / 4; |
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171 int max_inline_size = default_max_inline_size; |
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172 |
0 | 173 int call_site_count = method()->scale_count(profile.count()); |
174 int invoke_count = method()->interpreter_invocation_count(); | |
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175 |
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176 assert(invoke_count != 0, "require invocation count greater than zero"); |
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177 int freq = call_site_count / invoke_count; |
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178 |
0 | 179 // bump the max size if the call is frequent |
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180 if ((freq >= InlineFrequencyRatio) || |
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181 (call_site_count >= InlineFrequencyCount) || |
10278 | 182 is_unboxing_method(callee_method, C) || |
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183 is_init_with_ea(callee_method, caller_method, C)) { |
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184 |
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185 max_inline_size = C->freq_inline_size(); |
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186 if (size <= max_inline_size && TraceFrequencyInlining) { |
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187 CompileTask::print_inline_indent(inline_level()); |
0 | 188 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count); |
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189 CompileTask::print_inline_indent(inline_level()); |
0 | 190 callee_method->print(); |
191 tty->cr(); | |
192 } | |
193 } else { | |
194 // Not hot. Check for medium-sized pre-existing nmethod at cold sites. | |
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195 if (callee_method->has_compiled_code() && |
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196 callee_method->instructions_size() > inline_small_code_size) { |
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197 set_msg("already compiled into a medium method"); |
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198 return false; |
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199 } |
0 | 200 } |
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201 if (size > max_inline_size) { |
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202 if (max_inline_size > default_max_inline_size) { |
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203 set_msg("hot method too big"); |
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204 } else { |
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205 set_msg("too big"); |
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206 } |
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207 return false; |
0 | 208 } |
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209 return true; |
0 | 210 } |
211 | |
212 | |
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213 // negative filter: should callee NOT be inlined? |
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214 bool InlineTree::should_not_inline(ciMethod *callee_method, |
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215 ciMethod* caller_method, |
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216 JVMState* jvms, |
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217 WarmCallInfo* wci_result) { |
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218 |
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219 const char* fail_msg = NULL; |
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220 |
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221 // First check all inlining restrictions which are required for correctness |
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222 if ( callee_method->is_abstract()) { |
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223 fail_msg = "abstract method"; // // note: we allow ik->is_abstract() |
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224 } else if (!callee_method->holder()->is_initialized()) { |
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225 fail_msg = "method holder not initialized"; |
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226 } else if ( callee_method->is_native()) { |
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227 fail_msg = "native method"; |
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228 } else if ( callee_method->dont_inline()) { |
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229 fail_msg = "don't inline by annotation"; |
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230 } |
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231 |
0 | 232 if (!UseOldInlining) { |
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233 if (fail_msg != NULL) { |
0 | 234 *wci_result = *(WarmCallInfo::always_cold()); |
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235 set_msg(fail_msg); |
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236 return true; |
0 | 237 } |
238 | |
239 if (callee_method->has_unloaded_classes_in_signature()) { | |
240 wci_result->set_profit(wci_result->profit() * 0.1); | |
241 } | |
242 | |
243 // don't inline exception code unless the top method belongs to an | |
244 // exception class | |
245 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
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246 ciMethod* top_method = jvms->caller() != NULL ? jvms->caller()->of_depth(1)->method() : method(); |
0 | 247 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { |
248 wci_result->set_profit(wci_result->profit() * 0.1); | |
249 } | |
250 } | |
251 | |
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252 if (callee_method->has_compiled_code() && |
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253 callee_method->instructions_size() > InlineSmallCode) { |
0 | 254 wci_result->set_profit(wci_result->profit() * 0.1); |
255 // %%% adjust wci_result->size()? | |
256 } | |
257 | |
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258 return false; |
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259 } |
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260 |
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261 // one more inlining restriction |
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262 if (fail_msg == NULL && callee_method->has_unloaded_classes_in_signature()) { |
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263 fail_msg = "unloaded signature classes"; |
0 | 264 } |
265 | |
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266 if (fail_msg != NULL) { |
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267 set_msg(fail_msg); |
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268 return true; |
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269 } |
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270 |
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271 // ignore heuristic controls on inlining |
7473 | 272 if (callee_method->should_inline()) { |
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273 set_msg("force inline by CompilerOracle"); |
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274 return false; |
0 | 275 } |
276 | |
10278 | 277 if (callee_method->should_not_inline()) { |
278 set_msg("disallowed by CompilerOracle"); | |
279 return true; | |
280 } | |
281 | |
282 #ifndef PRODUCT | |
14232 | 283 int caller_bci = jvms->bci(); |
284 int inline_depth = inline_level()+1; | |
285 if (ciReplay::should_inline(C->replay_inline_data(), callee_method, caller_bci, inline_depth)) { | |
286 set_msg("force inline by ciReplay"); | |
287 return false; | |
288 } | |
289 | |
290 if (ciReplay::should_not_inline(C->replay_inline_data(), callee_method, caller_bci, inline_depth)) { | |
291 set_msg("disallowed by ciReplay"); | |
292 return true; | |
293 } | |
294 | |
10278 | 295 if (ciReplay::should_not_inline(callee_method)) { |
296 set_msg("disallowed by ciReplay"); | |
297 return true; | |
298 } | |
299 #endif | |
300 | |
0 | 301 // Now perform checks which are heuristic |
302 | |
10278 | 303 if (is_unboxing_method(callee_method, C)) { |
304 // Inline unboxing methods. | |
305 return false; | |
306 } | |
307 | |
7473 | 308 if (!callee_method->force_inline()) { |
309 if (callee_method->has_compiled_code() && | |
310 callee_method->instructions_size() > InlineSmallCode) { | |
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311 set_msg("already compiled into a big method"); |
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312 return true; |
7473 | 313 } |
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314 } |
0 | 315 |
316 // don't inline exception code unless the top method belongs to an | |
317 // exception class | |
318 if (caller_tree() != NULL && | |
319 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
320 const InlineTree *top = this; | |
321 while (top->caller_tree() != NULL) top = top->caller_tree(); | |
322 ciInstanceKlass* k = top->method()->holder(); | |
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323 if (!k->is_subclass_of(C->env()->Throwable_klass())) { |
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324 set_msg("exception method"); |
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325 return true; |
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326 } |
0 | 327 } |
328 | |
329 // use frequency-based objections only for non-trivial methods | |
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330 if (callee_method->code_size() <= MaxTrivialSize) { |
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331 return false; |
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332 } |
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333 |
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334 // don't use counts with -Xcomp or CTW |
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335 if (UseInterpreter && !CompileTheWorld) { |
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336 |
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337 if (!callee_method->has_compiled_code() && |
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338 !callee_method->was_executed_more_than(0)) { |
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339 set_msg("never executed"); |
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340 return true; |
41
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341 } |
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342 |
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343 if (is_init_with_ea(callee_method, caller_method, C)) { |
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344 // Escape Analysis: inline all executed constructors |
10278 | 345 return false; |
41
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346 } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold, |
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347 CompileThreshold >> 1))) { |
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348 set_msg("executed < MinInliningThreshold times"); |
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349 return true; |
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350 } |
0 | 351 } |
352 | |
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353 return false; |
0 | 354 } |
355 | |
356 //-----------------------------try_to_inline----------------------------------- | |
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357 // return true if ok |
0 | 358 // Relocated from "InliningClosure::try_to_inline" |
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359 bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method, |
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360 int caller_bci, JVMState* jvms, ciCallProfile& profile, |
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361 WarmCallInfo* wci_result, bool& should_delay) { |
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362 |
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363 // Old algorithm had funny accumulating BC-size counters |
0 | 364 if (UseOldInlining && ClipInlining |
365 && (int)count_inline_bcs() >= DesiredMethodLimit) { | |
7473 | 366 if (!callee_method->force_inline() || !IncrementalInline) { |
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367 set_msg("size > DesiredMethodLimit"); |
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368 return false; |
7473 | 369 } else if (!C->inlining_incrementally()) { |
370 should_delay = true; | |
371 } | |
0 | 372 } |
373 | |
14232 | 374 _forced_inline = false; // Reset |
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375 if (!should_inline(callee_method, caller_method, caller_bci, profile, |
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376 wci_result)) { |
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377 return false; |
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378 } |
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379 if (should_not_inline(callee_method, caller_method, jvms, wci_result)) { |
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380 return false; |
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381 } |
0 | 382 |
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383 if (InlineAccessors && callee_method->is_accessor()) { |
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384 // accessor methods are not subject to any of the following limits. |
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385 set_msg("accessor"); |
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386 return true; |
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387 } |
0 | 388 |
389 // suppress a few checks for accessors and trivial methods | |
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390 if (callee_method->code_size() > MaxTrivialSize) { |
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391 |
0 | 392 // don't inline into giant methods |
7473 | 393 if (C->over_inlining_cutoff()) { |
394 if ((!callee_method->force_inline() && !caller_method->is_compiled_lambda_form()) | |
395 || !IncrementalInline) { | |
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396 set_msg("NodeCountInliningCutoff"); |
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397 return false; |
7473 | 398 } else { |
399 should_delay = true; | |
400 } | |
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401 } |
0 | 402 |
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403 if ((!UseInterpreter || CompileTheWorld) && |
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404 is_init_with_ea(callee_method, caller_method, C)) { |
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405 // Escape Analysis stress testing when running Xcomp or CTW: |
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406 // inline constructors even if they are not reached. |
14232 | 407 } else if (forced_inline()) { |
408 // Inlining was forced by CompilerOracle or ciReplay | |
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409 } else if (profile.count() == 0) { |
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410 // don't inline unreached call sites |
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411 set_msg("call site not reached"); |
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412 return false; |
41
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413 } |
0 | 414 } |
415 | |
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416 if (!C->do_inlining() && InlineAccessors) { |
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417 set_msg("not an accessor"); |
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418 return false; |
41
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419 } |
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420 if (inline_level() > _max_inline_level) { |
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421 if (callee_method->force_inline() && inline_level() > MaxForceInlineLevel) { |
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422 set_msg("MaxForceInlineLevel"); |
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423 return false; |
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424 } |
7473 | 425 if (!callee_method->force_inline() || !IncrementalInline) { |
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426 set_msg("inlining too deep"); |
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427 return false; |
7473 | 428 } else if (!C->inlining_incrementally()) { |
429 should_delay = true; | |
430 } | |
41
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431 } |
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432 |
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433 // detect direct and indirect recursive inlining |
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434 { |
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435 // count the current method and the callee |
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436 const bool is_compiled_lambda_form = callee_method->is_compiled_lambda_form(); |
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437 int inline_level = 0; |
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438 if (!is_compiled_lambda_form) { |
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439 if (method() == callee_method) { |
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440 inline_level++; |
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441 } |
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442 } |
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443 // count callers of current method and callee |
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444 Node* callee_argument0 = is_compiled_lambda_form ? jvms->map()->argument(jvms, 0)->uncast() : NULL; |
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445 for (JVMState* j = jvms->caller(); j != NULL && j->has_method(); j = j->caller()) { |
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446 if (j->method() == callee_method) { |
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447 if (is_compiled_lambda_form) { |
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448 // Since compiled lambda forms are heavily reused we allow recursive inlining. If it is truly |
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449 // a recursion (using the same "receiver") we limit inlining otherwise we can easily blow the |
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450 // compiler stack. |
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451 Node* caller_argument0 = j->map()->argument(j, 0)->uncast(); |
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452 if (caller_argument0 == callee_argument0) { |
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453 inline_level++; |
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454 } |
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455 } else { |
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456 inline_level++; |
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457 } |
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458 } |
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459 } |
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460 if (inline_level > MaxRecursiveInlineLevel) { |
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461 set_msg("recursive inlining is too deep"); |
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462 return false; |
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463 } |
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464 } |
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465 |
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466 int size = callee_method->code_size_for_inlining(); |
0 | 467 |
468 if (UseOldInlining && ClipInlining | |
469 && (int)count_inline_bcs() + size >= DesiredMethodLimit) { | |
7473 | 470 if (!callee_method->force_inline() || !IncrementalInline) { |
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471 set_msg("size > DesiredMethodLimit"); |
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472 return false; |
7473 | 473 } else if (!C->inlining_incrementally()) { |
474 should_delay = true; | |
475 } | |
0 | 476 } |
477 | |
478 // ok, inline this method | |
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479 return true; |
0 | 480 } |
481 | |
482 //------------------------------pass_initial_checks---------------------------- | |
483 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) { | |
484 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL; | |
485 // Check if a callee_method was suggested | |
486 if( callee_method == NULL ) return false; | |
487 // Check if klass of callee_method is loaded | |
488 if( !callee_holder->is_loaded() ) return false; | |
489 if( !callee_holder->is_initialized() ) return false; | |
490 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) { | |
491 // Checks that constant pool's call site has been visited | |
492 // stricter than callee_holder->is_initialized() | |
493 ciBytecodeStream iter(caller_method); | |
494 iter.force_bci(caller_bci); | |
495 Bytecodes::Code call_bc = iter.cur_bc(); | |
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496 // An invokedynamic instruction does not have a klass. |
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497 if (call_bc != Bytecodes::_invokedynamic) { |
1565 | 498 int index = iter.get_index_u2_cpcache(); |
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499 if (!caller_method->is_klass_loaded(index, true)) { |
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500 return false; |
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501 } |
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502 // Try to do constant pool resolution if running Xcomp |
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503 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) { |
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504 return false; |
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505 } |
0 | 506 } |
507 } | |
508 // We will attempt to see if a class/field/etc got properly loaded. If it | |
509 // did not, it may attempt to throw an exception during our probing. Catch | |
510 // and ignore such exceptions and do not attempt to compile the method. | |
511 if( callee_method->should_exclude() ) return false; | |
512 | |
513 return true; | |
514 } | |
515 | |
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516 //------------------------------check_can_parse-------------------------------- |
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517 const char* InlineTree::check_can_parse(ciMethod* callee) { |
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518 // Certain methods cannot be parsed at all: |
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519 if ( callee->is_native()) return "native method"; |
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520 if ( callee->is_abstract()) return "abstract method"; |
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521 if (!callee->can_be_compiled()) return "not compilable (disabled)"; |
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522 if (!callee->has_balanced_monitors()) return "not compilable (unbalanced monitors)"; |
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523 if ( callee->get_flow_analysis()->failing()) return "not compilable (flow analysis failed)"; |
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524 return NULL; |
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525 } |
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526 |
0 | 527 //------------------------------print_inlining--------------------------------- |
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528 void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci, |
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529 bool success) const { |
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530 const char* inline_msg = msg(); |
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531 assert(inline_msg != NULL, "just checking"); |
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532 if (C->log() != NULL) { |
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533 if (success) { |
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534 C->log()->inline_success(inline_msg); |
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535 } else { |
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536 C->log()->inline_fail(inline_msg); |
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537 } |
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538 } |
12295 | 539 if (C->print_inlining()) { |
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540 C->print_inlining(callee_method, inline_level(), caller_bci, inline_msg); |
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541 if (callee_method == NULL) tty->print(" callee not monotonic or profiled"); |
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542 if (Verbose && callee_method) { |
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543 const InlineTree *top = this; |
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544 while( top->caller_tree() != NULL ) { top = top->caller_tree(); } |
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545 //tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count()); |
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546 } |
0 | 547 } |
548 } | |
549 | |
550 //------------------------------ok_to_inline----------------------------------- | |
7473 | 551 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci, bool& should_delay) { |
0 | 552 assert(callee_method != NULL, "caller checks for optimized virtual!"); |
7473 | 553 assert(!should_delay, "should be initialized to false"); |
0 | 554 #ifdef ASSERT |
555 // Make sure the incoming jvms has the same information content as me. | |
556 // This means that we can eventually make this whole class AllStatic. | |
557 if (jvms->caller() == NULL) { | |
558 assert(_caller_jvms == NULL, "redundant instance state"); | |
559 } else { | |
560 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state"); | |
561 } | |
562 assert(_method == jvms->method(), "redundant instance state"); | |
563 #endif | |
564 int caller_bci = jvms->bci(); | |
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565 ciMethod* caller_method = jvms->method(); |
0 | 566 |
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567 // Do some initial checks. |
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568 if (!pass_initial_checks(caller_method, caller_bci, callee_method)) { |
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569 set_msg("failed initial checks"); |
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570 print_inlining(callee_method, caller_bci, false /* !success */); |
0 | 571 return NULL; |
572 } | |
573 | |
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574 // Do some parse checks. |
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575 set_msg(check_can_parse(callee_method)); |
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576 if (msg() != NULL) { |
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577 print_inlining(callee_method, caller_bci, false /* !success */); |
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578 return NULL; |
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579 } |
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580 |
0 | 581 // Check if inlining policy says no. |
582 WarmCallInfo wci = *(initial_wci); | |
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583 bool success = try_to_inline(callee_method, caller_method, caller_bci, |
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584 jvms, profile, &wci, should_delay); |
0 | 585 |
586 #ifndef PRODUCT | |
587 if (UseOldInlining && InlineWarmCalls | |
12295 | 588 && (PrintOpto || C->print_inlining())) { |
0 | 589 bool cold = wci.is_cold(); |
590 bool hot = !cold && wci.is_hot(); | |
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591 bool old_cold = !success; |
0 | 592 if (old_cold != cold || (Verbose || WizardMode)) { |
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593 if (msg() == NULL) { |
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594 set_msg("OK"); |
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595 } |
0 | 596 tty->print(" OldInlining= %4s : %s\n WCI=", |
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597 old_cold ? "cold" : "hot", msg()); |
0 | 598 wci.print(); |
599 } | |
600 } | |
601 #endif | |
602 if (UseOldInlining) { | |
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603 if (success) { |
0 | 604 wci = *(WarmCallInfo::always_hot()); |
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605 } else { |
0 | 606 wci = *(WarmCallInfo::always_cold()); |
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607 } |
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608 } |
0 | 609 if (!InlineWarmCalls) { |
610 if (!wci.is_cold() && !wci.is_hot()) { | |
611 // Do not inline the warm calls. | |
612 wci = *(WarmCallInfo::always_cold()); | |
613 } | |
614 } | |
615 | |
616 if (!wci.is_cold()) { | |
617 // Inline! | |
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618 if (msg() == NULL) { |
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619 set_msg("inline (hot)"); |
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620 } |
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621 print_inlining(callee_method, caller_bci, true /* success */); |
0 | 622 if (UseOldInlining) |
623 build_inline_tree_for_callee(callee_method, jvms, caller_bci); | |
624 if (InlineWarmCalls && !wci.is_hot()) | |
625 return new (C) WarmCallInfo(wci); // copy to heap | |
626 return WarmCallInfo::always_hot(); | |
627 } | |
628 | |
629 // Do not inline | |
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630 if (msg() == NULL) { |
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631 set_msg("too cold to inline"); |
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632 } |
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633 print_inlining(callee_method, caller_bci, false /* !success */ ); |
0 | 634 return NULL; |
635 } | |
636 | |
637 //------------------------------compute_callee_frequency----------------------- | |
638 float InlineTree::compute_callee_frequency( int caller_bci ) const { | |
639 int count = method()->interpreter_call_site_count(caller_bci); | |
640 int invcnt = method()->interpreter_invocation_count(); | |
641 float freq = (float)count/(float)invcnt; | |
642 // Call-site count / interpreter invocation count, scaled recursively. | |
643 // Always between 0.0 and 1.0. Represents the percentage of the method's | |
644 // total execution time used at this call site. | |
645 | |
646 return freq; | |
647 } | |
648 | |
649 //------------------------------build_inline_tree_for_callee------------------- | |
650 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) { | |
651 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci); | |
652 // Attempt inlining. | |
653 InlineTree* old_ilt = callee_at(caller_bci, callee_method); | |
654 if (old_ilt != NULL) { | |
655 return old_ilt; | |
656 } | |
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657 int max_inline_level_adjust = 0; |
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658 if (caller_jvms->method() != NULL) { |
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659 if (caller_jvms->method()->is_compiled_lambda_form()) |
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660 max_inline_level_adjust += 1; // don't count actions in MH or indy adapter frames |
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661 else if (callee_method->is_method_handle_intrinsic() || |
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662 callee_method->is_compiled_lambda_form()) { |
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663 max_inline_level_adjust += 1; // don't count method handle calls from java.lang.invoke implem |
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664 } |
12295 | 665 if (max_inline_level_adjust != 0 && C->print_inlining() && (Verbose || WizardMode)) { |
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666 CompileTask::print_inline_indent(inline_level()); |
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667 tty->print_cr(" \\-> discounting inline depth"); |
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668 } |
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669 if (max_inline_level_adjust != 0 && C->log()) { |
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670 int id1 = C->log()->identify(caller_jvms->method()); |
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671 int id2 = C->log()->identify(callee_method); |
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672 C->log()->elem("inline_level_discount caller='%d' callee='%d'", id1, id2); |
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673 } |
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674 } |
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675 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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676 _subtrees.append(ilt); |
0 | 677 |
678 NOT_PRODUCT( _count_inlines += 1; ) | |
679 | |
680 return ilt; | |
681 } | |
682 | |
683 | |
684 //---------------------------------------callee_at----------------------------- | |
685 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const { | |
686 for (int i = 0; i < _subtrees.length(); i++) { | |
687 InlineTree* sub = _subtrees.at(i); | |
688 if (sub->caller_bci() == bci && callee == sub->method()) { | |
689 return sub; | |
690 } | |
691 } | |
692 return NULL; | |
693 } | |
694 | |
695 | |
696 //------------------------------build_inline_tree_root------------------------- | |
697 InlineTree *InlineTree::build_inline_tree_root() { | |
698 Compile* C = Compile::current(); | |
699 | |
700 // Root of inline tree | |
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701 InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel); |
0 | 702 |
703 return ilt; | |
704 } | |
705 | |
706 | |
707 //-------------------------find_subtree_from_root----------------------------- | |
708 // Given a jvms, which determines a call chain from the root method, | |
709 // find the corresponding inline tree. | |
710 // Note: This method will be removed or replaced as InlineTree goes away. | |
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711 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee) { |
0 | 712 InlineTree* iltp = root; |
713 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0; | |
714 for (uint d = 1; d <= depth; d++) { | |
715 JVMState* jvmsp = jvms->of_depth(d); | |
716 // Select the corresponding subtree for this bci. | |
717 assert(jvmsp->method() == iltp->method(), "tree still in sync"); | |
718 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method(); | |
719 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee); | |
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720 if (sub == NULL) { |
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721 if (d == depth) { |
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722 sub = iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci()); |
0 | 723 } |
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724 guarantee(sub != NULL, "should be a sub-ilt here"); |
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725 return sub; |
0 | 726 } |
727 iltp = sub; | |
728 } | |
729 return iltp; | |
730 } | |
3939 | 731 |
14232 | 732 // Count number of nodes in this subtree |
733 int InlineTree::count() const { | |
734 int result = 1; | |
735 for (int i = 0 ; i < _subtrees.length(); i++) { | |
736 result += _subtrees.at(i)->count(); | |
737 } | |
738 return result; | |
739 } | |
740 | |
741 void InlineTree::dump_replay_data(outputStream* out) { | |
742 out->print(" %d %d ", inline_level(), caller_bci()); | |
743 method()->dump_name_as_ascii(out); | |
744 for (int i = 0 ; i < _subtrees.length(); i++) { | |
745 _subtrees.at(i)->dump_replay_data(out); | |
746 } | |
747 } | |
3939 | 748 |
749 | |
750 #ifndef PRODUCT | |
751 void InlineTree::print_impl(outputStream* st, int indent) const { | |
752 for (int i = 0; i < indent; i++) st->print(" "); | |
14232 | 753 st->print(" @ %d", caller_bci()); |
3939 | 754 method()->print_short_name(st); |
755 st->cr(); | |
756 | |
757 for (int i = 0 ; i < _subtrees.length(); i++) { | |
758 _subtrees.at(i)->print_impl(st, indent + 2); | |
759 } | |
760 } | |
761 | |
762 void InlineTree::print_value_on(outputStream* st) const { | |
763 print_impl(st, 2); | |
764 } | |
765 #endif |