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annotate src/share/vm/opto/bytecodeInfo.cpp @ 17467:55fb97c4c58d hs25-b65

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8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 Summary: Copyright year updated for files modified during 2013 Reviewed-by: twisti, iveresov
author mikael
date Tue, 24 Dec 2013 11:48:39 -0800
parents e74074c34312
children 183bd5c00828
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1 /*
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2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "ci/ciReplay.hpp"
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27 #include "classfile/systemDictionary.hpp"
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28 #include "classfile/vmSymbols.hpp"
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29 #include "compiler/compileBroker.hpp"
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30 #include "compiler/compileLog.hpp"
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31 #include "interpreter/linkResolver.hpp"
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32 #include "oops/objArrayKlass.hpp"
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33 #include "opto/callGenerator.hpp"
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34 #include "opto/parse.hpp"
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35 #include "runtime/handles.inline.hpp"
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36
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37 //=============================================================================
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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),
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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 {
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53 NOT_PRODUCT(_count_inlines = 0;)
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54 if (_caller_jvms != NULL) {
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55 // Keep a private copy of the caller_jvms:
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56 _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms());
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57 _caller_jvms->set_bci(caller_jvms->bci());
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58 assert(!caller_jvms->should_reexecute(), "there should be no reexecute bytecode with inlining");
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59 }
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60 assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS");
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61 assert((caller_tree == NULL ? 0 : caller_tree->stack_depth() + 1) == stack_depth(), "correct (redundant) depth parameter");
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62 assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter");
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63 if (UseOldInlining) {
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64 // Update hierarchical counts, count_inline_bcs() and count_inlines()
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65 InlineTree *caller = (InlineTree *)caller_tree;
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66 for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) {
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67 caller->_count_inline_bcs += count_inline_bcs();
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68 NOT_PRODUCT(caller->_count_inlines++;)
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69 }
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70 }
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71 }
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72
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73 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms,
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74 float site_invoke_ratio, int max_inline_level) :
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75 C(c),
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76 _caller_jvms(caller_jvms),
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77 _caller_tree(NULL),
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78 _method(callee_method),
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79 _site_invoke_ratio(site_invoke_ratio),
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80 _max_inline_level(max_inline_level),
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81 _count_inline_bcs(method()->code_size()),
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82 _msg(NULL)
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83 {
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84 NOT_PRODUCT(_count_inlines = 0;)
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85 assert(!UseOldInlining, "do not use for old stuff");
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86 }
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87
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88 /**
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89 * Return true when EA is ON and a java constructor is called or
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90 * a super constructor is called from an inlined java constructor.
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91 * Also return true for boxing methods.
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92 */
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93 static bool is_init_with_ea(ciMethod* callee_method,
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94 ciMethod* caller_method, Compile* C) {
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95 if (!C->do_escape_analysis() || !EliminateAllocations) {
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96 return false; // EA is off
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97 }
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98 if (callee_method->is_initializer()) {
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99 return true; // constuctor
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100 }
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101 if (caller_method->is_initializer() &&
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102 caller_method != C->method() &&
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103 caller_method->holder()->is_subclass_of(callee_method->holder())) {
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104 return true; // super constructor is called from inlined constructor
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105 }
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106 if (C->eliminate_boxing() && callee_method->is_boxing_method()) {
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107 return true;
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108 }
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109 return false;
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110 }
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111
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112 /**
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113 * Force inlining unboxing accessor.
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114 */
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115 static bool is_unboxing_method(ciMethod* callee_method, Compile* C) {
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116 return C->eliminate_boxing() && callee_method->is_unboxing_method();
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117 }
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118
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119 // positive filter: should callee be inlined?
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120 bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method,
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121 int caller_bci, ciCallProfile& profile,
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122 WarmCallInfo* wci_result) {
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123 // Allows targeted inlining
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124 if(callee_method->should_inline()) {
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125 *wci_result = *(WarmCallInfo::always_hot());
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126 if (C->print_inlining() && Verbose) {
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127 CompileTask::print_inline_indent(inline_level());
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128 tty->print_cr("Inlined method is hot: ");
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129 }
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130 set_msg("force inline by CompilerOracle");
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131 return true;
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132 }
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133
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134 int size = callee_method->code_size_for_inlining();
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135
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136 // Check for too many throws (and not too huge)
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137 if(callee_method->interpreter_throwout_count() > InlineThrowCount &&
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138 size < InlineThrowMaxSize ) {
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139 wci_result->set_profit(wci_result->profit() * 100);
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140 if (C->print_inlining() && Verbose) {
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141 CompileTask::print_inline_indent(inline_level());
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142 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count());
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143 }
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144 set_msg("many throws");
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145 return true;
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146 }
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147
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148 if (!UseOldInlining) {
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149 set_msg("!UseOldInlining");
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150 return true; // size and frequency are represented in a new way
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151 }
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152
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153 int default_max_inline_size = C->max_inline_size();
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154 int inline_small_code_size = InlineSmallCode / 4;
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155 int max_inline_size = default_max_inline_size;
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156
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157 int call_site_count = method()->scale_count(profile.count());
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158 int invoke_count = method()->interpreter_invocation_count();
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159
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160 assert(invoke_count != 0, "require invocation count greater than zero");
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161 int freq = call_site_count / invoke_count;
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162
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163 // bump the max size if the call is frequent
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164 if ((freq >= InlineFrequencyRatio) ||
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165 (call_site_count >= InlineFrequencyCount) ||
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166 is_unboxing_method(callee_method, C) ||
41
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167 is_init_with_ea(callee_method, caller_method, C)) {
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168
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169 max_inline_size = C->freq_inline_size();
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170 if (size <= max_inline_size && TraceFrequencyInlining) {
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171 CompileTask::print_inline_indent(inline_level());
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172 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count);
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173 CompileTask::print_inline_indent(inline_level());
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174 callee_method->print();
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175 tty->cr();
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176 }
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177 } else {
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178 // Not hot. Check for medium-sized pre-existing nmethod at cold sites.
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179 if (callee_method->has_compiled_code() &&
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180 callee_method->instructions_size() > inline_small_code_size) {
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181 set_msg("already compiled into a medium method");
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182 return false;
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183 }
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184 }
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185 if (size > max_inline_size) {
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186 if (max_inline_size > default_max_inline_size) {
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187 set_msg("hot method too big");
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188 } else {
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189 set_msg("too big");
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190 }
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191 return false;
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192 }
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193 return true;
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194 }
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195
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196
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197 // negative filter: should callee NOT be inlined?
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198 bool InlineTree::should_not_inline(ciMethod *callee_method,
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199 ciMethod* caller_method,
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200 JVMState* jvms,
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201 WarmCallInfo* wci_result) {
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202
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203 const char* fail_msg = NULL;
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204
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205 // First check all inlining restrictions which are required for correctness
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206 if ( callee_method->is_abstract()) {
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207 fail_msg = "abstract method"; // // note: we allow ik->is_abstract()
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208 } else if (!callee_method->holder()->is_initialized()) {
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209 fail_msg = "method holder not initialized";
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210 } else if ( callee_method->is_native()) {
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211 fail_msg = "native method";
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212 } else if ( callee_method->dont_inline()) {
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213 fail_msg = "don't inline by annotation";
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214 }
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215
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216 if (!UseOldInlining) {
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217 if (fail_msg != NULL) {
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218 *wci_result = *(WarmCallInfo::always_cold());
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219 set_msg(fail_msg);
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220 return true;
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221 }
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222
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223 if (callee_method->has_unloaded_classes_in_signature()) {
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224 wci_result->set_profit(wci_result->profit() * 0.1);
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225 }
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226
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227 // don't inline exception code unless the top method belongs to an
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228 // exception class
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229 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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230 ciMethod* top_method = jvms->caller() != NULL ? jvms->caller()->of_depth(1)->method() : method();
0
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231 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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232 wci_result->set_profit(wci_result->profit() * 0.1);
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233 }
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234 }
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235
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236 if (callee_method->has_compiled_code() &&
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237 callee_method->instructions_size() > InlineSmallCode) {
0
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238 wci_result->set_profit(wci_result->profit() * 0.1);
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239 // %%% adjust wci_result->size()?
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240 }
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241
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242 return false;
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243 }
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244
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245 // one more inlining restriction
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246 if (fail_msg == NULL && callee_method->has_unloaded_classes_in_signature()) {
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247 fail_msg = "unloaded signature classes";
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248 }
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249
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250 if (fail_msg != NULL) {
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251 set_msg(fail_msg);
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252 return true;
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253 }
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254
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255 // ignore heuristic controls on inlining
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256 if (callee_method->should_inline()) {
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257 set_msg("force inline by CompilerOracle");
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258 return false;
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259 }
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260
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261 if (callee_method->should_not_inline()) {
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262 set_msg("disallowed by CompilerOracle");
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263 return true;
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264 }
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265
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266 #ifndef PRODUCT
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267 if (ciReplay::should_not_inline(callee_method)) {
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268 set_msg("disallowed by ciReplay");
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269 return true;
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270 }
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271 #endif
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272
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273 // Now perform checks which are heuristic
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274
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275 if (is_unboxing_method(callee_method, C)) {
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276 // Inline unboxing methods.
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277 return false;
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278 }
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279
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280 if (!callee_method->force_inline()) {
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281 if (callee_method->has_compiled_code() &&
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282 callee_method->instructions_size() > InlineSmallCode) {
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283 set_msg("already compiled into a big method");
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284 return true;
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285 }
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286 }
0
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287
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288 // don't inline exception code unless the top method belongs to an
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289 // exception class
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290 if (caller_tree() != NULL &&
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291 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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292 const InlineTree *top = this;
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293 while (top->caller_tree() != NULL) top = top->caller_tree();
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294 ciInstanceKlass* k = top->method()->holder();
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295 if (!k->is_subclass_of(C->env()->Throwable_klass())) {
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296 set_msg("exception method");
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297 return true;
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298 }
0
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299 }
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300
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301 // use frequency-based objections only for non-trivial methods
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302 if (callee_method->code_size() <= MaxTrivialSize) {
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303 return false;
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304 }
41
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305
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306 // don't use counts with -Xcomp or CTW
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307 if (UseInterpreter && !CompileTheWorld) {
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diff changeset
308
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309 if (!callee_method->has_compiled_code() &&
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310 !callee_method->was_executed_more_than(0)) {
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311 set_msg("never executed");
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312 return true;
41
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diff changeset
313 }
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314
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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315 if (is_init_with_ea(callee_method, caller_method, C)) {
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diff changeset
316 // Escape Analysis: inline all executed constructors
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317 return false;
41
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diff changeset
318 } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold,
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diff changeset
319 CompileThreshold >> 1))) {
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320 set_msg("executed < MinInliningThreshold times");
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321 return true;
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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diff changeset
322 }
0
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323 }
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324
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325 return false;
0
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326 }
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327
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328 //-----------------------------try_to_inline-----------------------------------
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329 // return true if ok
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330 // Relocated from "InliningClosure::try_to_inline"
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331 bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method,
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332 int caller_bci, JVMState* jvms, ciCallProfile& profile,
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iignatyev
parents: 7991
diff changeset
333 WarmCallInfo* wci_result, bool& should_delay) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
334
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
335 // Old algorithm had funny accumulating BC-size counters
0
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parents:
diff changeset
336 if (UseOldInlining && ClipInlining
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parents:
diff changeset
337 && (int)count_inline_bcs() >= DesiredMethodLimit) {
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
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parents: 7421
diff changeset
338 if (!callee_method->force_inline() || !IncrementalInline) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
339 set_msg("size > DesiredMethodLimit");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
340 return false;
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
341 } else if (!C->inlining_incrementally()) {
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
342 should_delay = true;
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
343 }
0
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diff changeset
344 }
a61af66fc99e Initial load
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parents:
diff changeset
345
8119
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parents: 7991
diff changeset
346 if (!should_inline(callee_method, caller_method, caller_bci, profile,
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
347 wci_result)) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
348 return false;
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
349 }
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
350 if (should_not_inline(callee_method, caller_method, jvms, wci_result)) {
8119
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iignatyev
parents: 7991
diff changeset
351 return false;
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
352 }
0
a61af66fc99e Initial load
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diff changeset
353
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c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
354 if (InlineAccessors && callee_method->is_accessor()) {
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
355 // accessor methods are not subject to any of the following limits.
8119
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parents: 7991
diff changeset
356 set_msg("accessor");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
357 return true;
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
358 }
0
a61af66fc99e Initial load
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359
a61af66fc99e Initial load
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parents:
diff changeset
360 // suppress a few checks for accessors and trivial methods
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
361 if (callee_method->code_size() > MaxTrivialSize) {
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
362
0
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363 // don't inline into giant methods
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
364 if (C->over_inlining_cutoff()) {
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
365 if ((!callee_method->force_inline() && !caller_method->is_compiled_lambda_form())
d092d1b31229 8005071: Incremental inlining for JSR 292
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parents: 7421
diff changeset
366 || !IncrementalInline) {
8119
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diff changeset
367 set_msg("NodeCountInliningCutoff");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
368 return false;
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
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parents: 7421
diff changeset
369 } else {
d092d1b31229 8005071: Incremental inlining for JSR 292
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diff changeset
370 should_delay = true;
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
371 }
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
372 }
0
a61af66fc99e Initial load
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parents:
diff changeset
373
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
374 if ((!UseInterpreter || CompileTheWorld) &&
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
375 is_init_with_ea(callee_method, caller_method, C)) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
376
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
377 // Escape Analysis stress testing when running Xcomp or CTW:
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
378 // inline constructors even if they are not reached.
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
379
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
380 } else if (profile.count() == 0) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
381 // don't inline unreached call sites
8119
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diff changeset
382 set_msg("call site not reached");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
383 return false;
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
384 }
0
a61af66fc99e Initial load
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parents:
diff changeset
385 }
a61af66fc99e Initial load
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parents:
diff changeset
386
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
387 if (!C->do_inlining() && InlineAccessors) {
8119
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iignatyev
parents: 7991
diff changeset
388 set_msg("not an accessor");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
389 return false;
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
390 }
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
391 if (inline_level() > _max_inline_level) {
13081
e74074c34312 8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents: 12862
diff changeset
392 if (callee_method->force_inline() && inline_level() > MaxForceInlineLevel) {
e74074c34312 8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents: 12862
diff changeset
393 set_msg("MaxForceInlineLevel");
e74074c34312 8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents: 12862
diff changeset
394 return false;
e74074c34312 8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents: 12862
diff changeset
395 }
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
396 if (!callee_method->force_inline() || !IncrementalInline) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
397 set_msg("inlining too deep");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
398 return false;
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
399 } else if (!C->inlining_incrementally()) {
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
400 should_delay = true;
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
401 }
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
402 }
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
403
3334
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
404 // detect direct and indirect recursive inlining
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
405 {
3334
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
406 // count the current method and the callee
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
407 const bool is_compiled_lambda_form = callee_method->is_compiled_lambda_form();
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
408 int inline_level = 0;
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
409 if (!is_compiled_lambda_form) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
410 if (method() == callee_method) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
411 inline_level++;
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
412 }
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
413 }
3334
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
414 // count callers of current method and callee
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
415 Node* callee_argument0 = is_compiled_lambda_form ? jvms->map()->argument(jvms, 0)->uncast() : NULL;
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
416 for (JVMState* j = jvms->caller(); j != NULL && j->has_method(); j = j->caller()) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
417 if (j->method() == callee_method) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
418 if (is_compiled_lambda_form) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
419 // Since compiled lambda forms are heavily reused we allow recursive inlining. If it is truly
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
420 // a recursion (using the same "receiver") we limit inlining otherwise we can easily blow the
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
421 // compiler stack.
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
422 Node* caller_argument0 = j->map()->argument(j, 0)->uncast();
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
423 if (caller_argument0 == callee_argument0) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
424 inline_level++;
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
425 }
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
426 } else {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
427 inline_level++;
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
428 }
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
429 }
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
430 }
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
431 if (inline_level > MaxRecursiveInlineLevel) {
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
432 set_msg("recursive inlining is too deep");
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
433 return false;
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
434 }
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
435 }
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
436
3897
de847cac9235 7078382: JSR 292: don't count method handle adapters against inlining budgets
twisti
parents: 3784
diff changeset
437 int size = callee_method->code_size_for_inlining();
0
a61af66fc99e Initial load
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parents:
diff changeset
438
a61af66fc99e Initial load
duke
parents:
diff changeset
439 if (UseOldInlining && ClipInlining
a61af66fc99e Initial load
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parents:
diff changeset
440 && (int)count_inline_bcs() + size >= DesiredMethodLimit) {
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
441 if (!callee_method->force_inline() || !IncrementalInline) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
442 set_msg("size > DesiredMethodLimit");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
443 return false;
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
444 } else if (!C->inlining_incrementally()) {
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
445 should_delay = true;
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
446 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
447 }
a61af66fc99e Initial load
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parents:
diff changeset
448
a61af66fc99e Initial load
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parents:
diff changeset
449 // ok, inline this method
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
450 return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
451 }
a61af66fc99e Initial load
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parents:
diff changeset
452
a61af66fc99e Initial load
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parents:
diff changeset
453 //------------------------------pass_initial_checks----------------------------
a61af66fc99e Initial load
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parents:
diff changeset
454 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) {
a61af66fc99e Initial load
duke
parents:
diff changeset
455 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL;
a61af66fc99e Initial load
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parents:
diff changeset
456 // Check if a callee_method was suggested
a61af66fc99e Initial load
duke
parents:
diff changeset
457 if( callee_method == NULL ) return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
458 // Check if klass of callee_method is loaded
a61af66fc99e Initial load
duke
parents:
diff changeset
459 if( !callee_holder->is_loaded() ) return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
460 if( !callee_holder->is_initialized() ) return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
461 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
462 // Checks that constant pool's call site has been visited
a61af66fc99e Initial load
duke
parents:
diff changeset
463 // stricter than callee_holder->is_initialized()
a61af66fc99e Initial load
duke
parents:
diff changeset
464 ciBytecodeStream iter(caller_method);
a61af66fc99e Initial load
duke
parents:
diff changeset
465 iter.force_bci(caller_bci);
a61af66fc99e Initial load
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parents:
diff changeset
466 Bytecodes::Code call_bc = iter.cur_bc();
1137
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
467 // An invokedynamic instruction does not have a klass.
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
468 if (call_bc != Bytecodes::_invokedynamic) {
1565
ab102d5d923e 6939207: refactor constant pool index processing
jrose
parents: 1564
diff changeset
469 int index = iter.get_index_u2_cpcache();
1137
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
470 if (!caller_method->is_klass_loaded(index, true)) {
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
471 return false;
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
472 }
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
473 // Try to do constant pool resolution if running Xcomp
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
474 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) {
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
475 return false;
97125851f396 6829187: compiler optimizations required for JSR 292
twisti
parents: 903
diff changeset
476 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
477 }
a61af66fc99e Initial load
duke
parents:
diff changeset
478 }
a61af66fc99e Initial load
duke
parents:
diff changeset
479 // We will attempt to see if a class/field/etc got properly loaded. If it
a61af66fc99e Initial load
duke
parents:
diff changeset
480 // did not, it may attempt to throw an exception during our probing. Catch
a61af66fc99e Initial load
duke
parents:
diff changeset
481 // and ignore such exceptions and do not attempt to compile the method.
a61af66fc99e Initial load
duke
parents:
diff changeset
482 if( callee_method->should_exclude() ) return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
483
a61af66fc99e Initial load
duke
parents:
diff changeset
484 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
485 }
a61af66fc99e Initial load
duke
parents:
diff changeset
486
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
487 //------------------------------check_can_parse--------------------------------
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
488 const char* InlineTree::check_can_parse(ciMethod* callee) {
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
489 // Certain methods cannot be parsed at all:
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
490 if ( callee->is_native()) return "native method";
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
491 if ( callee->is_abstract()) return "abstract method";
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
492 if (!callee->can_be_compiled()) return "not compilable (disabled)";
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
493 if (!callee->has_balanced_monitors()) return "not compilable (unbalanced monitors)";
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
494 if ( callee->get_flow_analysis()->failing()) return "not compilable (flow analysis failed)";
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
495 return NULL;
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
496 }
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
497
0
a61af66fc99e Initial load
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parents:
diff changeset
498 //------------------------------print_inlining---------------------------------
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
499 void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci,
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
500 bool success) const {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
501 const char* inline_msg = msg();
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
502 assert(inline_msg != NULL, "just checking");
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
503 if (C->log() != NULL) {
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
504 if (success) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
505 C->log()->inline_success(inline_msg);
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
506 } else {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
507 C->log()->inline_fail(inline_msg);
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
508 }
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
509 }
12295
1b64d46620a3 8022585: VM crashes when ran with -XX:+PrintInlining
kvn
parents: 11154
diff changeset
510 if (C->print_inlining()) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
511 C->print_inlining(callee_method, inline_level(), caller_bci, inline_msg);
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
512 if (callee_method == NULL) tty->print(" callee not monotonic or profiled");
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
513 if (Verbose && callee_method) {
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
514 const InlineTree *top = this;
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
515 while( top->caller_tree() != NULL ) { top = top->caller_tree(); }
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
516 //tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count());
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
517 }
0
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parents:
diff changeset
518 }
a61af66fc99e Initial load
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parents:
diff changeset
519 }
a61af66fc99e Initial load
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parents:
diff changeset
520
a61af66fc99e Initial load
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parents:
diff changeset
521 //------------------------------ok_to_inline-----------------------------------
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
522 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci, bool& should_delay) {
0
a61af66fc99e Initial load
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parents:
diff changeset
523 assert(callee_method != NULL, "caller checks for optimized virtual!");
7473
d092d1b31229 8005071: Incremental inlining for JSR 292
roland
parents: 7421
diff changeset
524 assert(!should_delay, "should be initialized to false");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
525 #ifdef ASSERT
a61af66fc99e Initial load
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parents:
diff changeset
526 // Make sure the incoming jvms has the same information content as me.
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parents:
diff changeset
527 // This means that we can eventually make this whole class AllStatic.
a61af66fc99e Initial load
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parents:
diff changeset
528 if (jvms->caller() == NULL) {
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parents:
diff changeset
529 assert(_caller_jvms == NULL, "redundant instance state");
a61af66fc99e Initial load
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parents:
diff changeset
530 } else {
a61af66fc99e Initial load
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parents:
diff changeset
531 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state");
a61af66fc99e Initial load
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parents:
diff changeset
532 }
a61af66fc99e Initial load
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parents:
diff changeset
533 assert(_method == jvms->method(), "redundant instance state");
a61af66fc99e Initial load
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parents:
diff changeset
534 #endif
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parents:
diff changeset
535 int caller_bci = jvms->bci();
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
536 ciMethod* caller_method = jvms->method();
0
a61af66fc99e Initial load
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parents:
diff changeset
537
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
538 // Do some initial checks.
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
539 if (!pass_initial_checks(caller_method, caller_bci, callee_method)) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
540 set_msg("failed initial checks");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
541 print_inlining(callee_method, caller_bci, false /* !success */);
0
a61af66fc99e Initial load
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parents:
diff changeset
542 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
543 }
a61af66fc99e Initial load
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parents:
diff changeset
544
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
545 // Do some parse checks.
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
546 set_msg(check_can_parse(callee_method));
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
547 if (msg() != NULL) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
548 print_inlining(callee_method, caller_bci, false /* !success */);
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
549 return NULL;
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
550 }
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
551
0
a61af66fc99e Initial load
duke
parents:
diff changeset
552 // Check if inlining policy says no.
a61af66fc99e Initial load
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parents:
diff changeset
553 WarmCallInfo wci = *(initial_wci);
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
554 bool success = try_to_inline(callee_method, caller_method, caller_bci,
12862
0c4c40f5c399 8011138: C2: stack overflow in compiler thread because of recursive inlining of lambda form methods
twisti
parents: 12295
diff changeset
555 jvms, profile, &wci, should_delay);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
556
a61af66fc99e Initial load
duke
parents:
diff changeset
557 #ifndef PRODUCT
a61af66fc99e Initial load
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parents:
diff changeset
558 if (UseOldInlining && InlineWarmCalls
12295
1b64d46620a3 8022585: VM crashes when ran with -XX:+PrintInlining
kvn
parents: 11154
diff changeset
559 && (PrintOpto || C->print_inlining())) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
560 bool cold = wci.is_cold();
a61af66fc99e Initial load
duke
parents:
diff changeset
561 bool hot = !cold && wci.is_hot();
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
562 bool old_cold = !success;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
563 if (old_cold != cold || (Verbose || WizardMode)) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
564 if (msg() == NULL) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
565 set_msg("OK");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
566 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
567 tty->print(" OldInlining= %4s : %s\n WCI=",
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
568 old_cold ? "cold" : "hot", msg());
0
a61af66fc99e Initial load
duke
parents:
diff changeset
569 wci.print();
a61af66fc99e Initial load
duke
parents:
diff changeset
570 }
a61af66fc99e Initial load
duke
parents:
diff changeset
571 }
a61af66fc99e Initial load
duke
parents:
diff changeset
572 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
573 if (UseOldInlining) {
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
574 if (success) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
575 wci = *(WarmCallInfo::always_hot());
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
576 } else {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
577 wci = *(WarmCallInfo::always_cold());
7991
60bba1398c51 8005439: no message about inline method if it specifed by CompileCommand
vlivanov
parents: 7473
diff changeset
578 }
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
579 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
580 if (!InlineWarmCalls) {
a61af66fc99e Initial load
duke
parents:
diff changeset
581 if (!wci.is_cold() && !wci.is_hot()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
582 // Do not inline the warm calls.
a61af66fc99e Initial load
duke
parents:
diff changeset
583 wci = *(WarmCallInfo::always_cold());
a61af66fc99e Initial load
duke
parents:
diff changeset
584 }
a61af66fc99e Initial load
duke
parents:
diff changeset
585 }
a61af66fc99e Initial load
duke
parents:
diff changeset
586
a61af66fc99e Initial load
duke
parents:
diff changeset
587 if (!wci.is_cold()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
588 // Inline!
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
589 if (msg() == NULL) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
590 set_msg("inline (hot)");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
591 }
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
592 print_inlining(callee_method, caller_bci, true /* success */);
0
a61af66fc99e Initial load
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parents:
diff changeset
593 if (UseOldInlining)
a61af66fc99e Initial load
duke
parents:
diff changeset
594 build_inline_tree_for_callee(callee_method, jvms, caller_bci);
a61af66fc99e Initial load
duke
parents:
diff changeset
595 if (InlineWarmCalls && !wci.is_hot())
a61af66fc99e Initial load
duke
parents:
diff changeset
596 return new (C) WarmCallInfo(wci); // copy to heap
a61af66fc99e Initial load
duke
parents:
diff changeset
597 return WarmCallInfo::always_hot();
a61af66fc99e Initial load
duke
parents:
diff changeset
598 }
a61af66fc99e Initial load
duke
parents:
diff changeset
599
a61af66fc99e Initial load
duke
parents:
diff changeset
600 // Do not inline
8119
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
601 if (msg() == NULL) {
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
602 set_msg("too cold to inline");
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
603 }
133bf557ef77 8007439: C2: adding successful message of inlining
iignatyev
parents: 7991
diff changeset
604 print_inlining(callee_method, caller_bci, false /* !success */ );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
605 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
606 }
a61af66fc99e Initial load
duke
parents:
diff changeset
607
a61af66fc99e Initial load
duke
parents:
diff changeset
608 //------------------------------compute_callee_frequency-----------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
609 float InlineTree::compute_callee_frequency( int caller_bci ) const {
a61af66fc99e Initial load
duke
parents:
diff changeset
610 int count = method()->interpreter_call_site_count(caller_bci);
a61af66fc99e Initial load
duke
parents:
diff changeset
611 int invcnt = method()->interpreter_invocation_count();
a61af66fc99e Initial load
duke
parents:
diff changeset
612 float freq = (float)count/(float)invcnt;
a61af66fc99e Initial load
duke
parents:
diff changeset
613 // Call-site count / interpreter invocation count, scaled recursively.
a61af66fc99e Initial load
duke
parents:
diff changeset
614 // Always between 0.0 and 1.0. Represents the percentage of the method's
a61af66fc99e Initial load
duke
parents:
diff changeset
615 // total execution time used at this call site.
a61af66fc99e Initial load
duke
parents:
diff changeset
616
a61af66fc99e Initial load
duke
parents:
diff changeset
617 return freq;
a61af66fc99e Initial load
duke
parents:
diff changeset
618 }
a61af66fc99e Initial load
duke
parents:
diff changeset
619
a61af66fc99e Initial load
duke
parents:
diff changeset
620 //------------------------------build_inline_tree_for_callee-------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
621 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) {
a61af66fc99e Initial load
duke
parents:
diff changeset
622 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci);
a61af66fc99e Initial load
duke
parents:
diff changeset
623 // Attempt inlining.
a61af66fc99e Initial load
duke
parents:
diff changeset
624 InlineTree* old_ilt = callee_at(caller_bci, callee_method);
a61af66fc99e Initial load
duke
parents:
diff changeset
625 if (old_ilt != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
626 return old_ilt;
a61af66fc99e Initial load
duke
parents:
diff changeset
627 }
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
628 int max_inline_level_adjust = 0;
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
629 if (caller_jvms->method() != NULL) {
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
630 if (caller_jvms->method()->is_compiled_lambda_form())
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
631 max_inline_level_adjust += 1; // don't count actions in MH or indy adapter frames
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
632 else if (callee_method->is_method_handle_intrinsic() ||
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
633 callee_method->is_compiled_lambda_form()) {
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
634 max_inline_level_adjust += 1; // don't count method handle calls from java.lang.invoke implem
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
635 }
12295
1b64d46620a3 8022585: VM crashes when ran with -XX:+PrintInlining
kvn
parents: 11154
diff changeset
636 if (max_inline_level_adjust != 0 && C->print_inlining() && (Verbose || WizardMode)) {
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
637 CompileTask::print_inline_indent(inline_level());
3366
e2a92dd0d3d2 7042122: JSR 292: adjust various inline thresholds for JSR 292 API methods and method handle adapters
twisti
parents: 3345
diff changeset
638 tty->print_cr(" \\-> discounting inline depth");
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
639 }
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
640 if (max_inline_level_adjust != 0 && C->log()) {
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
641 int id1 = C->log()->identify(caller_jvms->method());
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
642 int id2 = C->log()->identify(callee_method);
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
643 C->log()->elem("inline_level_discount caller='%d' callee='%d'", id1, id2);
1157
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
644 }
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
645 }
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
646 InlineTree* ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _max_inline_level + max_inline_level_adjust);
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
647 _subtrees.append(ilt);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
648
a61af66fc99e Initial load
duke
parents:
diff changeset
649 NOT_PRODUCT( _count_inlines += 1; )
a61af66fc99e Initial load
duke
parents:
diff changeset
650
a61af66fc99e Initial load
duke
parents:
diff changeset
651 return ilt;
a61af66fc99e Initial load
duke
parents:
diff changeset
652 }
a61af66fc99e Initial load
duke
parents:
diff changeset
653
a61af66fc99e Initial load
duke
parents:
diff changeset
654
a61af66fc99e Initial load
duke
parents:
diff changeset
655 //---------------------------------------callee_at-----------------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
656 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const {
a61af66fc99e Initial load
duke
parents:
diff changeset
657 for (int i = 0; i < _subtrees.length(); i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
658 InlineTree* sub = _subtrees.at(i);
a61af66fc99e Initial load
duke
parents:
diff changeset
659 if (sub->caller_bci() == bci && callee == sub->method()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
660 return sub;
a61af66fc99e Initial load
duke
parents:
diff changeset
661 }
a61af66fc99e Initial load
duke
parents:
diff changeset
662 }
a61af66fc99e Initial load
duke
parents:
diff changeset
663 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
664 }
a61af66fc99e Initial load
duke
parents:
diff changeset
665
a61af66fc99e Initial load
duke
parents:
diff changeset
666
a61af66fc99e Initial load
duke
parents:
diff changeset
667 //------------------------------build_inline_tree_root-------------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
668 InlineTree *InlineTree::build_inline_tree_root() {
a61af66fc99e Initial load
duke
parents:
diff changeset
669 Compile* C = Compile::current();
a61af66fc99e Initial load
duke
parents:
diff changeset
670
a61af66fc99e Initial load
duke
parents:
diff changeset
671 // Root of inline tree
3784
aabf25fa3f05 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
672 InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
673
a61af66fc99e Initial load
duke
parents:
diff changeset
674 return ilt;
a61af66fc99e Initial load
duke
parents:
diff changeset
675 }
a61af66fc99e Initial load
duke
parents:
diff changeset
676
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677
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678 //-------------------------find_subtree_from_root-----------------------------
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679 // Given a jvms, which determines a call chain from the root method,
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680 // find the corresponding inline tree.
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681 // Note: This method will be removed or replaced as InlineTree goes away.
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682 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee) {
0
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683 InlineTree* iltp = root;
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684 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0;
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685 for (uint d = 1; d <= depth; d++) {
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686 JVMState* jvmsp = jvms->of_depth(d);
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687 // Select the corresponding subtree for this bci.
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688 assert(jvmsp->method() == iltp->method(), "tree still in sync");
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689 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method();
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690 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee);
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691 if (sub == NULL) {
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692 if (d == depth) {
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693 sub = iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci());
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694 }
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695 guarantee(sub != NULL, "should be a sub-ilt here");
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696 return sub;
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697 }
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698 iltp = sub;
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699 }
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700 return iltp;
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701 }
3939
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702
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703
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704
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705 #ifndef PRODUCT
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706 void InlineTree::print_impl(outputStream* st, int indent) const {
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707 for (int i = 0; i < indent; i++) st->print(" ");
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708 st->print(" @ %d ", caller_bci());
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709 method()->print_short_name(st);
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710 st->cr();
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711
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712 for (int i = 0 ; i < _subtrees.length(); i++) {
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713 _subtrees.at(i)->print_impl(st, indent + 2);
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714 }
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715 }
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716
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717 void InlineTree::print_value_on(outputStream* st) const {
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718 print_impl(st, 2);
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719 }
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720 #endif