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annotate src/share/vm/opto/bytecodeInfo.cpp @ 6948:e522a00b91aa

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Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
author Doug Simon <doug.simon@oracle.com>
date Mon, 12 Nov 2012 23:14:12 +0100
parents 957c266d8bc5 d804e148cff8
children 2cb439954abf
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1 /*
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2 * Copyright (c) 1998, 2012, 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 "classfile/systemDictionary.hpp"
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27 #include "classfile/vmSymbols.hpp"
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28 #include "compiler/compileBroker.hpp"
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29 #include "compiler/compileLog.hpp"
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30 #include "interpreter/linkResolver.hpp"
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31 #include "oops/objArrayKlass.hpp"
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32 #include "opto/callGenerator.hpp"
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33 #include "opto/parse.hpp"
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34 #include "runtime/handles.inline.hpp"
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35
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36 //=============================================================================
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37 //------------------------------InlineTree-------------------------------------
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38 InlineTree::InlineTree(Compile* c,
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39 const InlineTree *caller_tree, ciMethod* callee,
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40 JVMState* caller_jvms, int caller_bci,
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41 float site_invoke_ratio, int max_inline_level) :
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42 C(c),
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43 _caller_jvms(caller_jvms),
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44 _caller_tree((InlineTree*) caller_tree),
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45 _method(callee),
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46 _site_invoke_ratio(site_invoke_ratio),
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47 _max_inline_level(max_inline_level),
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48 _count_inline_bcs(method()->code_size_for_inlining())
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49 {
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50 NOT_PRODUCT(_count_inlines = 0;)
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51 if (_caller_jvms != NULL) {
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52 // Keep a private copy of the caller_jvms:
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53 _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms());
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54 _caller_jvms->set_bci(caller_jvms->bci());
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55 assert(!caller_jvms->should_reexecute(), "there should be no reexecute bytecode with inlining");
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56 }
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57 assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS");
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58 assert((caller_tree == NULL ? 0 : caller_tree->stack_depth() + 1) == stack_depth(), "correct (redundant) depth parameter");
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59 assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter");
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60 if (UseOldInlining) {
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61 // Update hierarchical counts, count_inline_bcs() and count_inlines()
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62 InlineTree *caller = (InlineTree *)caller_tree;
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63 for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) {
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64 caller->_count_inline_bcs += count_inline_bcs();
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65 NOT_PRODUCT(caller->_count_inlines++;)
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66 }
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67 }
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68 }
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69
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70 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms,
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71 float site_invoke_ratio, int max_inline_level) :
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72 C(c),
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73 _caller_jvms(caller_jvms),
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74 _caller_tree(NULL),
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75 _method(callee_method),
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76 _site_invoke_ratio(site_invoke_ratio),
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77 _max_inline_level(max_inline_level),
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78 _count_inline_bcs(method()->code_size())
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79 {
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80 NOT_PRODUCT(_count_inlines = 0;)
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81 assert(!UseOldInlining, "do not use for old stuff");
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82 }
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83
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84 static bool is_init_with_ea(ciMethod* callee_method,
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85 ciMethod* caller_method, Compile* C) {
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86 // True when EA is ON and a java constructor is called or
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87 // a super constructor is called from an inlined java constructor.
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88 return C->do_escape_analysis() && EliminateAllocations &&
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89 ( callee_method->is_initializer() ||
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90 (caller_method->is_initializer() &&
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91 caller_method != C->method() &&
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92 caller_method->holder()->is_subclass_of(callee_method->holder()))
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93 );
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94 }
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95
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96 // positive filter: should callee be inlined? returns NULL, if yes, or rejection msg
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97 const char* InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) const {
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98 // Allows targeted inlining
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99 if(callee_method->should_inline()) {
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100 *wci_result = *(WarmCallInfo::always_hot());
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101 if (PrintInlining && Verbose) {
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102 CompileTask::print_inline_indent(inline_level());
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103 tty->print_cr("Inlined method is hot: ");
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104 }
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105 return NULL;
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106 }
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107
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108 // positive filter: should send be inlined? returns NULL (--> yes)
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109 // or rejection msg
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110 int size = callee_method->code_size_for_inlining();
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111
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112 // Check for too many throws (and not too huge)
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113 if(callee_method->interpreter_throwout_count() > InlineThrowCount &&
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114 size < InlineThrowMaxSize ) {
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115 wci_result->set_profit(wci_result->profit() * 100);
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116 if (PrintInlining && Verbose) {
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117 CompileTask::print_inline_indent(inline_level());
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118 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count());
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119 }
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120 return NULL;
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121 }
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122
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123 if (!UseOldInlining) {
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124 return NULL; // size and frequency are represented in a new way
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125 }
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126
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127 int default_max_inline_size = C->max_inline_size();
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128 int inline_small_code_size = InlineSmallCode / 4;
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129 int max_inline_size = default_max_inline_size;
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130
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131 int call_site_count = method()->scale_count(profile.count());
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132 int invoke_count = method()->interpreter_invocation_count();
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133
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134 assert(invoke_count != 0, "require invocation count greater than zero");
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135 int freq = call_site_count / invoke_count;
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136
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137 // bump the max size if the call is frequent
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138 if ((freq >= InlineFrequencyRatio) ||
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139 (call_site_count >= InlineFrequencyCount) ||
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140 is_init_with_ea(callee_method, caller_method, C)) {
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141
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142 max_inline_size = C->freq_inline_size();
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143 if (size <= max_inline_size && TraceFrequencyInlining) {
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144 CompileTask::print_inline_indent(inline_level());
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145 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count);
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146 CompileTask::print_inline_indent(inline_level());
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147 callee_method->print();
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148 tty->cr();
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149 }
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150 } else {
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151 // Not hot. Check for medium-sized pre-existing nmethod at cold sites.
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152 if (callee_method->has_compiled_code() &&
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153 callee_method->instructions_size(CompLevel_full_optimization) > inline_small_code_size)
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154 return "already compiled into a medium method";
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155 }
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156 if (size > max_inline_size) {
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157 if (max_inline_size > default_max_inline_size)
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158 return "hot method too big";
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159 return "too big";
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160 }
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161 return NULL;
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162 }
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163
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164
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165 // negative filter: should callee NOT be inlined? returns NULL, ok to inline, or rejection msg
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166 const char* InlineTree::should_not_inline(ciMethod *callee_method, ciMethod* caller_method, WarmCallInfo* wci_result) const {
0
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167 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg
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168 if (!UseOldInlining) {
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169 const char* fail = NULL;
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170 if ( callee_method->is_abstract()) fail = "abstract method";
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171 // note: we allow ik->is_abstract()
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172 if (!callee_method->holder()->is_initialized()) fail = "method holder not initialized";
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173 if ( callee_method->is_native()) fail = "native method";
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174 if ( callee_method->dont_inline()) fail = "don't inline by annotation";
0
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175
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176 if (fail) {
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177 *wci_result = *(WarmCallInfo::always_cold());
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178 return fail;
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179 }
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180
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181 if (callee_method->has_unloaded_classes_in_signature()) {
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182 wci_result->set_profit(wci_result->profit() * 0.1);
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183 }
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184
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185 // don't inline exception code unless the top method belongs to an
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186 // exception class
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187 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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188 ciMethod* top_method = caller_jvms() ? caller_jvms()->of_depth(1)->method() : method();
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189 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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190 wci_result->set_profit(wci_result->profit() * 0.1);
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191 }
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192 }
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193
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194 if (callee_method->has_compiled_code() &&
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195 callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) {
0
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196 wci_result->set_profit(wci_result->profit() * 0.1);
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197 // %%% adjust wci_result->size()?
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198 }
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199
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200 return NULL;
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201 }
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202
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203 // First check all inlining restrictions which are required for correctness
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204 if ( callee_method->is_abstract()) return "abstract method";
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205 // note: we allow ik->is_abstract()
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206 if (!callee_method->holder()->is_initialized()) return "method holder not initialized";
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207 if ( callee_method->is_native()) return "native method";
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208 if ( callee_method->dont_inline()) return "don't inline by annotation";
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209 if ( callee_method->has_unloaded_classes_in_signature()) return "unloaded signature classes";
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210
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211 if (callee_method->force_inline() || callee_method->should_inline()) {
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212 // ignore heuristic controls on inlining
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213 return NULL;
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214 }
5407
80ae8033fe01 Perform compiler oracle should_not_inline check before heuristic checks
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 3939
diff changeset
215 if (callee_method->should_not_inline()) {
80ae8033fe01 Perform compiler oracle should_not_inline check before heuristic checks
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 3939
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216 return "disallowed by CompilerOracle";
80ae8033fe01 Perform compiler oracle should_not_inline check before heuristic checks
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 3939
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217 }
0
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218
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219 // Now perform checks which are heuristic
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220
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221 if (callee_method->has_compiled_code() &&
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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222 callee_method->instructions_size(CompLevel_full_optimization) > InlineSmallCode) {
0
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223 return "already compiled into a big method";
6266
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224 }
0
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225
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226 // don't inline exception code unless the top method belongs to an
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227 // exception class
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228 if (caller_tree() != NULL &&
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229 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
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230 const InlineTree *top = this;
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231 while (top->caller_tree() != NULL) top = top->caller_tree();
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232 ciInstanceKlass* k = top->method()->holder();
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233 if (!k->is_subclass_of(C->env()->Throwable_klass()))
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234 return "exception method";
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235 }
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236
5950
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
237 if (callee_method->should_not_inline()) {
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
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238 return "disallowed by CompilerOracle";
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
239 }
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
240
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
241 if (UseStringCache) {
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
242 // Do not inline StringCache::profile() method used only at the beginning.
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
243 if (callee_method->name() == ciSymbol::profile_name() &&
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
244 callee_method->holder()->name() == ciSymbol::java_lang_StringCache()) {
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
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245 return "profiling method";
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
246 }
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
247 }
0f4014d7731b 7152961: InlineTree::should_not_inline may exit prematurely
never
parents: 3939
diff changeset
248
0
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249 // use frequency-based objections only for non-trivial methods
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250 if (callee_method->code_size() <= MaxTrivialSize) return NULL;
41
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251
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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diff changeset
252 // don't use counts with -Xcomp or CTW
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
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253 if (UseInterpreter && !CompileTheWorld) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
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254
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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parents: 0
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255 if (!callee_method->has_compiled_code() &&
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
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256 !callee_method->was_executed_more_than(0)) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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257 return "never executed";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
258 }
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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259
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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260 if (is_init_with_ea(callee_method, caller_method, C)) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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261
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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262 // Escape Analysis: inline all executed constructors
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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263
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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diff changeset
264 } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold,
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
265 CompileThreshold >> 1))) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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diff changeset
266 return "executed < MinInliningThreshold times";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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parents: 0
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267 }
0
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268 }
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269
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270 return NULL;
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271 }
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272
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273 //-----------------------------try_to_inline-----------------------------------
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274 // return NULL if ok, reason for not inlining otherwise
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275 // Relocated from "InliningClosure::try_to_inline"
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
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diff changeset
276 const char* InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) {
0
a61af66fc99e Initial load
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277
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278 // Old algorithm had funny accumulating BC-size counters
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279 if (UseOldInlining && ClipInlining
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280 && (int)count_inline_bcs() >= DesiredMethodLimit) {
a61af66fc99e Initial load
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281 return "size > DesiredMethodLimit";
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282 }
a61af66fc99e Initial load
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283
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284 const char *msg = NULL;
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diff changeset
285 msg = should_inline(callee_method, caller_method, caller_bci, profile, wci_result);
e2a92dd0d3d2 7042122: JSR 292: adjust various inline thresholds for JSR 292 API methods and method handle adapters
twisti
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diff changeset
286 if (msg != NULL)
41
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diff changeset
287 return msg;
3366
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twisti
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diff changeset
288
e2a92dd0d3d2 7042122: JSR 292: adjust various inline thresholds for JSR 292 API methods and method handle adapters
twisti
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diff changeset
289 msg = should_not_inline(callee_method, caller_method, wci_result);
e2a92dd0d3d2 7042122: JSR 292: adjust various inline thresholds for JSR 292 API methods and method handle adapters
twisti
parents: 3345
diff changeset
290 if (msg != NULL)
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
291 return msg;
0
a61af66fc99e Initial load
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292
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c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
293 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
294 // accessor methods are not subject to any of the following limits.
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
295 return NULL;
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
296 }
0
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297
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298 // suppress a few checks for accessors and trivial methods
6266
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twisti
parents: 5950
diff changeset
299 if (callee_method->code_size() > MaxTrivialSize) {
41
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kvn
parents: 0
diff changeset
300
0
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301 // don't inline into giant methods
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
302 if (C->unique() > (uint)NodeCountInliningCutoff) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
303 return "NodeCountInliningCutoff";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
304 }
0
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diff changeset
305
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
306 if ((!UseInterpreter || CompileTheWorld) &&
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
307 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
308
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
309 // 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
310 // inline constructors even if they are not reached.
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
311
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
312 } else if (profile.count() == 0) {
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
313 // don't inline unreached call sites
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
314 return "call site not reached";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
315 }
0
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316 }
a61af66fc99e Initial load
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317
1157
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jrose
parents: 1138
diff changeset
318 if (!C->do_inlining() && InlineAccessors) {
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
319 return "not an accessor";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
320 }
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
321 if (inline_level() > _max_inline_level) {
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
322 return "inlining too deep";
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
323 }
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
324
3334
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
325 // detect direct and indirect recursive inlining
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
326 if (!callee_method->is_compiled_lambda_form()) {
3334
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
327 // count the current method and the callee
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
328 int inline_level = (method() == callee_method) ? 1 : 0;
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
329 if (inline_level > MaxRecursiveInlineLevel)
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
330 return "recursively inlining too deep";
b21ecca7ccc4 6552561: MaxRecursiveInlineLevel flag doesn't operate correctly
twisti
parents: 2405
diff changeset
331 // count callers of current method and callee
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
332 JVMState* jvms = caller_jvms();
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
333 while (jvms != NULL && jvms->has_method()) {
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2357
diff changeset
334 if (jvms->method() == callee_method) {
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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335 inline_level++;
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diff changeset
336 if (inline_level > MaxRecursiveInlineLevel)
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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337 return "recursively inlining too deep";
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338 }
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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339 jvms = jvms->caller();
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340 }
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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341 }
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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342
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343 int size = callee_method->code_size_for_inlining();
0
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344
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345 if (UseOldInlining && ClipInlining
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346 && (int)count_inline_bcs() + size >= DesiredMethodLimit) {
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347 return "size > DesiredMethodLimit";
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348 }
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349
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350 // ok, inline this method
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351 return NULL;
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352 }
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353
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354 //------------------------------pass_initial_checks----------------------------
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355 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) {
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356 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL;
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357 // Check if a callee_method was suggested
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358 if( callee_method == NULL ) return false;
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359 // Check if klass of callee_method is loaded
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360 if( !callee_holder->is_loaded() ) return false;
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361 if( !callee_holder->is_initialized() ) return false;
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362 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) {
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363 // Checks that constant pool's call site has been visited
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364 // stricter than callee_holder->is_initialized()
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365 ciBytecodeStream iter(caller_method);
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366 iter.force_bci(caller_bci);
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367 Bytecodes::Code call_bc = iter.cur_bc();
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368 // An invokedynamic instruction does not have a klass.
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369 if (call_bc != Bytecodes::_invokedynamic) {
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370 int index = iter.get_index_u2_cpcache();
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371 if (!caller_method->is_klass_loaded(index, true)) {
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372 return false;
97125851f396 6829187: compiler optimizations required for JSR 292
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373 }
97125851f396 6829187: compiler optimizations required for JSR 292
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374 // Try to do constant pool resolution if running Xcomp
97125851f396 6829187: compiler optimizations required for JSR 292
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375 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) {
97125851f396 6829187: compiler optimizations required for JSR 292
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376 return false;
97125851f396 6829187: compiler optimizations required for JSR 292
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377 }
0
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378 }
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379 }
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380 // We will attempt to see if a class/field/etc got properly loaded. If it
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381 // did not, it may attempt to throw an exception during our probing. Catch
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382 // and ignore such exceptions and do not attempt to compile the method.
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383 if( callee_method->should_exclude() ) return false;
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384
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385 return true;
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386 }
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387
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388 //------------------------------check_can_parse--------------------------------
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389 const char* InlineTree::check_can_parse(ciMethod* callee) {
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390 // Certain methods cannot be parsed at all:
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
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391 if ( callee->is_native()) return "native method";
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392 if ( callee->is_abstract()) return "abstract method";
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393 if (!callee->can_be_compiled()) return "not compilable (disabled)";
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394 if (!callee->has_balanced_monitors()) return "not compilable (unbalanced monitors)";
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395 if ( callee->get_flow_analysis()->failing()) return "not compilable (flow analysis failed)";
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
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396 return NULL;
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
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parents: 3897
diff changeset
397 }
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
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diff changeset
398
0
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399 //------------------------------print_inlining---------------------------------
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400 // Really, the failure_msg can be a success message also.
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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401 void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci, const char* failure_msg) const {
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
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402 CompileTask::print_inlining(callee_method, inline_level(), caller_bci, failure_msg ? failure_msg : "inline");
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
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403 if (callee_method == NULL) tty->print(" callee not monotonic or profiled");
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twisti
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diff changeset
404 if (Verbose && callee_method) {
0
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parents:
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405 const InlineTree *top = this;
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406 while( top->caller_tree() != NULL ) { top = top->caller_tree(); }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents: 5950
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407 //tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count());
0
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408 }
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409 }
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410
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parents:
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411 //------------------------------ok_to_inline-----------------------------------
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412 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci) {
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413 assert(callee_method != NULL, "caller checks for optimized virtual!");
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414 #ifdef ASSERT
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415 // Make sure the incoming jvms has the same information content as me.
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parents:
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416 // This means that we can eventually make this whole class AllStatic.
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417 if (jvms->caller() == NULL) {
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418 assert(_caller_jvms == NULL, "redundant instance state");
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419 } else {
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420 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state");
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421 }
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422 assert(_method == jvms->method(), "redundant instance state");
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423 #endif
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424 const char *failure_msg = NULL;
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425 int caller_bci = jvms->bci();
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426 ciMethod *caller_method = jvms->method();
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427
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
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parents: 3897
diff changeset
428 // Do some initial checks.
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
429 if (!pass_initial_checks(caller_method, caller_bci, callee_method)) {
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
430 if (PrintInlining) print_inlining(callee_method, caller_bci, "failed initial checks");
0
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431 return NULL;
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432 }
a61af66fc99e Initial load
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parents:
diff changeset
433
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
434 // Do some parse checks.
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
435 failure_msg = check_can_parse(callee_method);
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
436 if (failure_msg != NULL) {
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
437 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg);
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
438 return NULL;
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
439 }
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
440
0
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parents:
diff changeset
441 // Check if inlining policy says no.
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442 WarmCallInfo wci = *(initial_wci);
41
874b2c4f43d1 6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents: 0
diff changeset
443 failure_msg = try_to_inline(callee_method, caller_method, caller_bci, profile, &wci);
0
a61af66fc99e Initial load
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parents:
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444 if (failure_msg != NULL && C->log() != NULL) {
6843
c3e799c37717 7177003: C1: LogCompilation support
vlivanov
parents: 6266
diff changeset
445 C->log()->inline_fail(failure_msg);
0
a61af66fc99e Initial load
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446 }
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447
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diff changeset
448 #ifndef PRODUCT
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449 if (UseOldInlining && InlineWarmCalls
a61af66fc99e Initial load
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parents:
diff changeset
450 && (PrintOpto || PrintOptoInlining || PrintInlining)) {
a61af66fc99e Initial load
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parents:
diff changeset
451 bool cold = wci.is_cold();
a61af66fc99e Initial load
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parents:
diff changeset
452 bool hot = !cold && wci.is_hot();
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parents:
diff changeset
453 bool old_cold = (failure_msg != NULL);
a61af66fc99e Initial load
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parents:
diff changeset
454 if (old_cold != cold || (Verbose || WizardMode)) {
a61af66fc99e Initial load
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parents:
diff changeset
455 tty->print(" OldInlining= %4s : %s\n WCI=",
a61af66fc99e Initial load
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parents:
diff changeset
456 old_cold ? "cold" : "hot", failure_msg ? failure_msg : "OK");
a61af66fc99e Initial load
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parents:
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457 wci.print();
a61af66fc99e Initial load
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parents:
diff changeset
458 }
a61af66fc99e Initial load
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parents:
diff changeset
459 }
a61af66fc99e Initial load
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parents:
diff changeset
460 #endif
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parents:
diff changeset
461 if (UseOldInlining) {
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parents:
diff changeset
462 if (failure_msg == NULL)
a61af66fc99e Initial load
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parents:
diff changeset
463 wci = *(WarmCallInfo::always_hot());
a61af66fc99e Initial load
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parents:
diff changeset
464 else
a61af66fc99e Initial load
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parents:
diff changeset
465 wci = *(WarmCallInfo::always_cold());
a61af66fc99e Initial load
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parents:
diff changeset
466 }
a61af66fc99e Initial load
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parents:
diff changeset
467 if (!InlineWarmCalls) {
a61af66fc99e Initial load
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parents:
diff changeset
468 if (!wci.is_cold() && !wci.is_hot()) {
a61af66fc99e Initial load
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parents:
diff changeset
469 // Do not inline the warm calls.
a61af66fc99e Initial load
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parents:
diff changeset
470 wci = *(WarmCallInfo::always_cold());
a61af66fc99e Initial load
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parents:
diff changeset
471 }
a61af66fc99e Initial load
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parents:
diff changeset
472 }
a61af66fc99e Initial load
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parents:
diff changeset
473
a61af66fc99e Initial load
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parents:
diff changeset
474 if (!wci.is_cold()) {
a61af66fc99e Initial load
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parents:
diff changeset
475 // In -UseOldInlining, the failure_msg may also be a success message.
a61af66fc99e Initial load
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parents:
diff changeset
476 if (failure_msg == NULL) failure_msg = "inline (hot)";
a61af66fc99e Initial load
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parents:
diff changeset
477
a61af66fc99e Initial load
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parents:
diff changeset
478 // Inline!
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
479 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg);
0
a61af66fc99e Initial load
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parents:
diff changeset
480 if (UseOldInlining)
a61af66fc99e Initial load
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parents:
diff changeset
481 build_inline_tree_for_callee(callee_method, jvms, caller_bci);
a61af66fc99e Initial load
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parents:
diff changeset
482 if (InlineWarmCalls && !wci.is_hot())
a61af66fc99e Initial load
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parents:
diff changeset
483 return new (C) WarmCallInfo(wci); // copy to heap
a61af66fc99e Initial load
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parents:
diff changeset
484 return WarmCallInfo::always_hot();
a61af66fc99e Initial load
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parents:
diff changeset
485 }
a61af66fc99e Initial load
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parents:
diff changeset
486
a61af66fc99e Initial load
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parents:
diff changeset
487 // Do not inline
a61af66fc99e Initial load
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parents:
diff changeset
488 if (failure_msg == NULL) failure_msg = "too cold to inline";
3900
a32de5085326 7079673: JSR 292: C1 should inline bytecoded method handle adapters
twisti
parents: 3897
diff changeset
489 if (PrintInlining) print_inlining(callee_method, caller_bci, failure_msg);
0
a61af66fc99e Initial load
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parents:
diff changeset
490 return NULL;
a61af66fc99e Initial load
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parents:
diff changeset
491 }
a61af66fc99e Initial load
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parents:
diff changeset
492
a61af66fc99e Initial load
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parents:
diff changeset
493 //------------------------------compute_callee_frequency-----------------------
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parents:
diff changeset
494 float InlineTree::compute_callee_frequency( int caller_bci ) const {
a61af66fc99e Initial load
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parents:
diff changeset
495 int count = method()->interpreter_call_site_count(caller_bci);
a61af66fc99e Initial load
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parents:
diff changeset
496 int invcnt = method()->interpreter_invocation_count();
a61af66fc99e Initial load
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parents:
diff changeset
497 float freq = (float)count/(float)invcnt;
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parents:
diff changeset
498 // Call-site count / interpreter invocation count, scaled recursively.
a61af66fc99e Initial load
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parents:
diff changeset
499 // Always between 0.0 and 1.0. Represents the percentage of the method's
a61af66fc99e Initial load
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parents:
diff changeset
500 // total execution time used at this call site.
a61af66fc99e Initial load
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parents:
diff changeset
501
a61af66fc99e Initial load
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parents:
diff changeset
502 return freq;
a61af66fc99e Initial load
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parents:
diff changeset
503 }
a61af66fc99e Initial load
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parents:
diff changeset
504
a61af66fc99e Initial load
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parents:
diff changeset
505 //------------------------------build_inline_tree_for_callee-------------------
a61af66fc99e Initial load
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parents:
diff changeset
506 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) {
a61af66fc99e Initial load
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parents:
diff changeset
507 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci);
a61af66fc99e Initial load
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parents:
diff changeset
508 // Attempt inlining.
a61af66fc99e Initial load
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parents:
diff changeset
509 InlineTree* old_ilt = callee_at(caller_bci, callee_method);
a61af66fc99e Initial load
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parents:
diff changeset
510 if (old_ilt != NULL) {
a61af66fc99e Initial load
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parents:
diff changeset
511 return old_ilt;
a61af66fc99e Initial load
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parents:
diff changeset
512 }
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
513 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
514 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
515 if (caller_jvms->method()->is_compiled_lambda_form())
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
516 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
517 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
518 callee_method->is_compiled_lambda_form()) {
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
519 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
520 }
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
521 if (max_inline_level_adjust != 0 && PrintInlining && (Verbose || WizardMode)) {
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
522 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
523 tty->print_cr(" \\-> discounting inline depth");
1157
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jrose
parents: 1138
diff changeset
524 }
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
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parents: 3366
diff changeset
525 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
526 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
527 int id2 = C->log()->identify(callee_method);
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
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parents: 3366
diff changeset
528 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
529 }
c3b315a0d58a 6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents: 1138
diff changeset
530 }
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
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parents: 3366
diff changeset
531 InlineTree* ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _max_inline_level + max_inline_level_adjust);
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
532 _subtrees.append(ilt);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
533
a61af66fc99e Initial load
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parents:
diff changeset
534 NOT_PRODUCT( _count_inlines += 1; )
a61af66fc99e Initial load
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parents:
diff changeset
535
a61af66fc99e Initial load
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parents:
diff changeset
536 return ilt;
a61af66fc99e Initial load
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parents:
diff changeset
537 }
a61af66fc99e Initial load
duke
parents:
diff changeset
538
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parents:
diff changeset
539
a61af66fc99e Initial load
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parents:
diff changeset
540 //---------------------------------------callee_at-----------------------------
a61af66fc99e Initial load
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parents:
diff changeset
541 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const {
a61af66fc99e Initial load
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parents:
diff changeset
542 for (int i = 0; i < _subtrees.length(); i++) {
a61af66fc99e Initial load
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parents:
diff changeset
543 InlineTree* sub = _subtrees.at(i);
a61af66fc99e Initial load
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parents:
diff changeset
544 if (sub->caller_bci() == bci && callee == sub->method()) {
a61af66fc99e Initial load
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parents:
diff changeset
545 return sub;
a61af66fc99e Initial load
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parents:
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546 }
a61af66fc99e Initial load
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parents:
diff changeset
547 }
a61af66fc99e Initial load
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parents:
diff changeset
548 return NULL;
a61af66fc99e Initial load
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parents:
diff changeset
549 }
a61af66fc99e Initial load
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parents:
diff changeset
550
a61af66fc99e Initial load
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parents:
diff changeset
551
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parents:
diff changeset
552 //------------------------------build_inline_tree_root-------------------------
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parents:
diff changeset
553 InlineTree *InlineTree::build_inline_tree_root() {
a61af66fc99e Initial load
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parents:
diff changeset
554 Compile* C = Compile::current();
a61af66fc99e Initial load
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parents:
diff changeset
555
a61af66fc99e Initial load
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parents:
diff changeset
556 // Root of inline tree
3458
393e144bb99b 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 3366
diff changeset
557 InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel);
0
a61af66fc99e Initial load
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parents:
diff changeset
558
a61af66fc99e Initial load
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parents:
diff changeset
559 return ilt;
a61af66fc99e Initial load
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parents:
diff changeset
560 }
a61af66fc99e Initial load
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parents:
diff changeset
561
a61af66fc99e Initial load
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parents:
diff changeset
562
a61af66fc99e Initial load
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parents:
diff changeset
563 //-------------------------find_subtree_from_root-----------------------------
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parents:
diff changeset
564 // Given a jvms, which determines a call chain from the root method,
a61af66fc99e Initial load
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parents:
diff changeset
565 // find the corresponding inline tree.
a61af66fc99e Initial load
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parents:
diff changeset
566 // Note: This method will be removed or replaced as InlineTree goes away.
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
567 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee) {
0
a61af66fc99e Initial load
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parents:
diff changeset
568 InlineTree* iltp = root;
a61af66fc99e Initial load
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parents:
diff changeset
569 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0;
a61af66fc99e Initial load
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parents:
diff changeset
570 for (uint d = 1; d <= depth; d++) {
a61af66fc99e Initial load
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parents:
diff changeset
571 JVMState* jvmsp = jvms->of_depth(d);
a61af66fc99e Initial load
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parents:
diff changeset
572 // Select the corresponding subtree for this bci.
a61af66fc99e Initial load
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parents:
diff changeset
573 assert(jvmsp->method() == iltp->method(), "tree still in sync");
a61af66fc99e Initial load
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parents:
diff changeset
574 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method();
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parents:
diff changeset
575 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee);
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
576 if (sub == NULL) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
577 if (d == depth) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
578 sub = iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci());
0
a61af66fc99e Initial load
duke
parents:
diff changeset
579 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
580 guarantee(sub != NULL, "should be a sub-ilt here");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 5950
diff changeset
581 return sub;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
582 }
a61af66fc99e Initial load
duke
parents:
diff changeset
583 iltp = sub;
a61af66fc99e Initial load
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parents:
diff changeset
584 }
a61af66fc99e Initial load
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parents:
diff changeset
585 return iltp;
a61af66fc99e Initial load
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parents:
diff changeset
586 }
3939
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
587
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
588
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
589
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
590 #ifndef PRODUCT
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
591 void InlineTree::print_impl(outputStream* st, int indent) const {
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
592 for (int i = 0; i < indent; i++) st->print(" ");
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
593 st->print(" @ %d ", caller_bci());
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
594 method()->print_short_name(st);
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
595 st->cr();
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
596
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
597 for (int i = 0 ; i < _subtrees.length(); i++) {
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
598 _subtrees.at(i)->print_impl(st, indent + 2);
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
599 }
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
600 }
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
601
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
602 void InlineTree::print_value_on(outputStream* st) const {
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
603 print_impl(st, 2);
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
604 }
f6f3bb0ee072 7088955: add C2 IR support to the SA
never
parents: 3905
diff changeset
605 #endif