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annotate src/share/vm/opto/macro.cpp @ 10278:6f3fd5150b67

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6934604: enable parts of EliminateAutoBox by default Summary: Resurrected autobox elimination code and enabled part of it by default. Reviewed-by: roland, twisti
author kvn
date Wed, 08 May 2013 15:08:01 -0700
parents 8651f608fea4
children 70120f47d403
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1 /*
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2 * Copyright (c) 2005, 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 "compiler/compileLog.hpp"
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27 #include "libadt/vectset.hpp"
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28 #include "opto/addnode.hpp"
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29 #include "opto/callnode.hpp"
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30 #include "opto/cfgnode.hpp"
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31 #include "opto/compile.hpp"
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32 #include "opto/connode.hpp"
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33 #include "opto/locknode.hpp"
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34 #include "opto/loopnode.hpp"
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35 #include "opto/macro.hpp"
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36 #include "opto/memnode.hpp"
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37 #include "opto/node.hpp"
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38 #include "opto/phaseX.hpp"
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39 #include "opto/rootnode.hpp"
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40 #include "opto/runtime.hpp"
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41 #include "opto/subnode.hpp"
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42 #include "opto/type.hpp"
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43 #include "runtime/sharedRuntime.hpp"
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44
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45
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46 //
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47 // Replace any references to "oldref" in inputs to "use" with "newref".
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48 // Returns the number of replacements made.
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49 //
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50 int PhaseMacroExpand::replace_input(Node *use, Node *oldref, Node *newref) {
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51 int nreplacements = 0;
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52 uint req = use->req();
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53 for (uint j = 0; j < use->len(); j++) {
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54 Node *uin = use->in(j);
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55 if (uin == oldref) {
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56 if (j < req)
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57 use->set_req(j, newref);
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58 else
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59 use->set_prec(j, newref);
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60 nreplacements++;
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61 } else if (j >= req && uin == NULL) {
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62 break;
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63 }
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64 }
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65 return nreplacements;
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66 }
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67
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68 void PhaseMacroExpand::copy_call_debug_info(CallNode *oldcall, CallNode * newcall) {
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69 // Copy debug information and adjust JVMState information
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70 uint old_dbg_start = oldcall->tf()->domain()->cnt();
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71 uint new_dbg_start = newcall->tf()->domain()->cnt();
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72 int jvms_adj = new_dbg_start - old_dbg_start;
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73 assert (new_dbg_start == newcall->req(), "argument count mismatch");
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75 Dict* sosn_map = new Dict(cmpkey,hashkey);
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76 for (uint i = old_dbg_start; i < oldcall->req(); i++) {
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77 Node* old_in = oldcall->in(i);
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78 // Clone old SafePointScalarObjectNodes, adjusting their field contents.
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79 if (old_in != NULL && old_in->is_SafePointScalarObject()) {
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80 SafePointScalarObjectNode* old_sosn = old_in->as_SafePointScalarObject();
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81 uint old_unique = C->unique();
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82 Node* new_in = old_sosn->clone(jvms_adj, sosn_map);
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83 if (old_unique != C->unique()) {
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84 new_in->set_req(0, C->root()); // reset control edge
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85 new_in = transform_later(new_in); // Register new node.
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86 }
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87 old_in = new_in;
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88 }
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89 newcall->add_req(old_in);
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90 }
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91
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92 newcall->set_jvms(oldcall->jvms());
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93 for (JVMState *jvms = newcall->jvms(); jvms != NULL; jvms = jvms->caller()) {
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94 jvms->set_map(newcall);
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95 jvms->set_locoff(jvms->locoff()+jvms_adj);
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96 jvms->set_stkoff(jvms->stkoff()+jvms_adj);
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97 jvms->set_monoff(jvms->monoff()+jvms_adj);
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98 jvms->set_scloff(jvms->scloff()+jvms_adj);
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99 jvms->set_endoff(jvms->endoff()+jvms_adj);
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100 }
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101 }
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102
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103 Node* PhaseMacroExpand::opt_bits_test(Node* ctrl, Node* region, int edge, Node* word, int mask, int bits, bool return_fast_path) {
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104 Node* cmp;
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105 if (mask != 0) {
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106 Node* and_node = transform_later(new (C) AndXNode(word, MakeConX(mask)));
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107 cmp = transform_later(new (C) CmpXNode(and_node, MakeConX(bits)));
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108 } else {
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109 cmp = word;
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110 }
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111 Node* bol = transform_later(new (C) BoolNode(cmp, BoolTest::ne));
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112 IfNode* iff = new (C) IfNode( ctrl, bol, PROB_MIN, COUNT_UNKNOWN );
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113 transform_later(iff);
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114
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115 // Fast path taken.
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116 Node *fast_taken = transform_later( new (C) IfFalseNode(iff) );
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117
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118 // Fast path not-taken, i.e. slow path
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119 Node *slow_taken = transform_later( new (C) IfTrueNode(iff) );
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120
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121 if (return_fast_path) {
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122 region->init_req(edge, slow_taken); // Capture slow-control
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123 return fast_taken;
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124 } else {
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125 region->init_req(edge, fast_taken); // Capture fast-control
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126 return slow_taken;
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127 }
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128 }
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129
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130 //--------------------copy_predefined_input_for_runtime_call--------------------
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131 void PhaseMacroExpand::copy_predefined_input_for_runtime_call(Node * ctrl, CallNode* oldcall, CallNode* call) {
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132 // Set fixed predefined input arguments
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133 call->init_req( TypeFunc::Control, ctrl );
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134 call->init_req( TypeFunc::I_O , oldcall->in( TypeFunc::I_O) );
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135 call->init_req( TypeFunc::Memory , oldcall->in( TypeFunc::Memory ) ); // ?????
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136 call->init_req( TypeFunc::ReturnAdr, oldcall->in( TypeFunc::ReturnAdr ) );
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137 call->init_req( TypeFunc::FramePtr, oldcall->in( TypeFunc::FramePtr ) );
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138 }
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139
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140 //------------------------------make_slow_call---------------------------------
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141 CallNode* PhaseMacroExpand::make_slow_call(CallNode *oldcall, const TypeFunc* slow_call_type, address slow_call, const char* leaf_name, Node* slow_path, Node* parm0, Node* parm1) {
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142
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143 // Slow-path call
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144 CallNode *call = leaf_name
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145 ? (CallNode*)new (C) CallLeafNode ( slow_call_type, slow_call, leaf_name, TypeRawPtr::BOTTOM )
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146 : (CallNode*)new (C) CallStaticJavaNode( slow_call_type, slow_call, OptoRuntime::stub_name(slow_call), oldcall->jvms()->bci(), TypeRawPtr::BOTTOM );
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147
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148 // Slow path call has no side-effects, uses few values
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149 copy_predefined_input_for_runtime_call(slow_path, oldcall, call );
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150 if (parm0 != NULL) call->init_req(TypeFunc::Parms+0, parm0);
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151 if (parm1 != NULL) call->init_req(TypeFunc::Parms+1, parm1);
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152 copy_call_debug_info(oldcall, call);
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153 call->set_cnt(PROB_UNLIKELY_MAG(4)); // Same effect as RC_UNCOMMON.
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154 _igvn.replace_node(oldcall, call);
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155 transform_later(call);
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156
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157 return call;
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158 }
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159
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160 void PhaseMacroExpand::extract_call_projections(CallNode *call) {
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161 _fallthroughproj = NULL;
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162 _fallthroughcatchproj = NULL;
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163 _ioproj_fallthrough = NULL;
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164 _ioproj_catchall = NULL;
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165 _catchallcatchproj = NULL;
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166 _memproj_fallthrough = NULL;
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167 _memproj_catchall = NULL;
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168 _resproj = NULL;
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169 for (DUIterator_Fast imax, i = call->fast_outs(imax); i < imax; i++) {
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170 ProjNode *pn = call->fast_out(i)->as_Proj();
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171 switch (pn->_con) {
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172 case TypeFunc::Control:
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173 {
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174 // For Control (fallthrough) and I_O (catch_all_index) we have CatchProj -> Catch -> Proj
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parents:
diff changeset
175 _fallthroughproj = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
176 DUIterator_Fast jmax, j = pn->fast_outs(jmax);
a61af66fc99e Initial load
duke
parents:
diff changeset
177 const Node *cn = pn->fast_out(j);
a61af66fc99e Initial load
duke
parents:
diff changeset
178 if (cn->is_Catch()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
179 ProjNode *cpn = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
180 for (DUIterator_Fast kmax, k = cn->fast_outs(kmax); k < kmax; k++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
181 cpn = cn->fast_out(k)->as_Proj();
a61af66fc99e Initial load
duke
parents:
diff changeset
182 assert(cpn->is_CatchProj(), "must be a CatchProjNode");
a61af66fc99e Initial load
duke
parents:
diff changeset
183 if (cpn->_con == CatchProjNode::fall_through_index)
a61af66fc99e Initial load
duke
parents:
diff changeset
184 _fallthroughcatchproj = cpn;
a61af66fc99e Initial load
duke
parents:
diff changeset
185 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
186 assert(cpn->_con == CatchProjNode::catch_all_index, "must be correct index.");
a61af66fc99e Initial load
duke
parents:
diff changeset
187 _catchallcatchproj = cpn;
a61af66fc99e Initial load
duke
parents:
diff changeset
188 }
a61af66fc99e Initial load
duke
parents:
diff changeset
189 }
a61af66fc99e Initial load
duke
parents:
diff changeset
190 }
a61af66fc99e Initial load
duke
parents:
diff changeset
191 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
192 }
a61af66fc99e Initial load
duke
parents:
diff changeset
193 case TypeFunc::I_O:
a61af66fc99e Initial load
duke
parents:
diff changeset
194 if (pn->_is_io_use)
a61af66fc99e Initial load
duke
parents:
diff changeset
195 _ioproj_catchall = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
196 else
a61af66fc99e Initial load
duke
parents:
diff changeset
197 _ioproj_fallthrough = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
198 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
199 case TypeFunc::Memory:
a61af66fc99e Initial load
duke
parents:
diff changeset
200 if (pn->_is_io_use)
a61af66fc99e Initial load
duke
parents:
diff changeset
201 _memproj_catchall = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
202 else
a61af66fc99e Initial load
duke
parents:
diff changeset
203 _memproj_fallthrough = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
204 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
205 case TypeFunc::Parms:
a61af66fc99e Initial load
duke
parents:
diff changeset
206 _resproj = pn;
a61af66fc99e Initial load
duke
parents:
diff changeset
207 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
208 default:
a61af66fc99e Initial load
duke
parents:
diff changeset
209 assert(false, "unexpected projection from allocation node.");
a61af66fc99e Initial load
duke
parents:
diff changeset
210 }
a61af66fc99e Initial load
duke
parents:
diff changeset
211 }
a61af66fc99e Initial load
duke
parents:
diff changeset
212
a61af66fc99e Initial load
duke
parents:
diff changeset
213 }
a61af66fc99e Initial load
duke
parents:
diff changeset
214
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
215 // Eliminate a card mark sequence. p2x is a ConvP2XNode
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
216 void PhaseMacroExpand::eliminate_card_mark(Node* p2x) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
217 assert(p2x->Opcode() == Op_CastP2X, "ConvP2XNode required");
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
218 if (!UseG1GC) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
219 // vanilla/CMS post barrier
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
220 Node *shift = p2x->unique_out();
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
221 Node *addp = shift->unique_out();
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
222 for (DUIterator_Last jmin, j = addp->last_outs(jmin); j >= jmin; --j) {
3282
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
223 Node *mem = addp->last_out(j);
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
224 if (UseCondCardMark && mem->is_Load()) {
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
225 assert(mem->Opcode() == Op_LoadB, "unexpected code shape");
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
226 // The load is checking if the card has been written so
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
227 // replace it with zero to fold the test.
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
228 _igvn.replace_node(mem, intcon(0));
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
229 continue;
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
230 }
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
231 assert(mem->is_Store(), "store required");
149bb459be66 7029167: add support for conditional card marks
never
parents: 2100
diff changeset
232 _igvn.replace_node(mem, mem->in(MemNode::Memory));
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
233 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
234 } else {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
235 // G1 pre/post barriers
4894
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
236 assert(p2x->outcnt() <= 2, "expects 1 or 2 users: Xor and URShift nodes");
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
237 // It could be only one user, URShift node, in Object.clone() instrinsic
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
238 // but the new allocation is passed to arraycopy stub and it could not
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
239 // be scalar replaced. So we don't check the case.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
240
4894
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
241 // An other case of only one user (Xor) is when the value check for NULL
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
242 // in G1 post barrier is folded after CCP so the code which used URShift
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
243 // is removed.
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
244
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
245 // Take Region node before eliminating post barrier since it also
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
246 // eliminates CastP2X node when it has only one user.
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
247 Node* this_region = p2x->in(0);
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
248 assert(this_region != NULL, "");
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
249
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
250 // Remove G1 post barrier.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
251
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
252 // Search for CastP2X->Xor->URShift->Cmp path which
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
253 // checks if the store done to a different from the value's region.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
254 // And replace Cmp with #0 (false) to collapse G1 post barrier.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
255 Node* xorx = NULL;
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
256 for (DUIterator_Fast imax, i = p2x->fast_outs(imax); i < imax; i++) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
257 Node* u = p2x->fast_out(i);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
258 if (u->Opcode() == Op_XorX) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
259 xorx = u;
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
260 break;
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
261 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
262 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
263 assert(xorx != NULL, "missing G1 post barrier");
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
264 Node* shift = xorx->unique_out();
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
265 Node* cmpx = shift->unique_out();
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
266 assert(cmpx->is_Cmp() && cmpx->unique_out()->is_Bool() &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
267 cmpx->unique_out()->as_Bool()->_test._test == BoolTest::ne,
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
268 "missing region check in G1 post barrier");
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
269 _igvn.replace_node(cmpx, makecon(TypeInt::CC_EQ));
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
270
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
271 // Remove G1 pre barrier.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
272
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
273 // Search "if (marking != 0)" check and set it to "false".
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
274 // There is no G1 pre barrier if previous stored value is NULL
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
275 // (for example, after initialization).
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
276 if (this_region->is_Region() && this_region->req() == 3) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
277 int ind = 1;
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
278 if (!this_region->in(ind)->is_IfFalse()) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
279 ind = 2;
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
280 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
281 if (this_region->in(ind)->is_IfFalse()) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
282 Node* bol = this_region->in(ind)->in(0)->in(1);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
283 assert(bol->is_Bool(), "");
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
284 cmpx = bol->in(1);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
285 if (bol->as_Bool()->_test._test == BoolTest::ne &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
286 cmpx->is_Cmp() && cmpx->in(2) == intcon(0) &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
287 cmpx->in(1)->is_Load()) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
288 Node* adr = cmpx->in(1)->as_Load()->in(MemNode::Address);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
289 const int marking_offset = in_bytes(JavaThread::satb_mark_queue_offset() +
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
290 PtrQueue::byte_offset_of_active());
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
291 if (adr->is_AddP() && adr->in(AddPNode::Base) == top() &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
292 adr->in(AddPNode::Address)->Opcode() == Op_ThreadLocal &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
293 adr->in(AddPNode::Offset) == MakeConX(marking_offset)) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
294 _igvn.replace_node(cmpx, makecon(TypeInt::CC_EQ));
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
295 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
296 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
297 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
298 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
299 // Now CastP2X can be removed since it is used only on dead path
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
300 // which currently still alive until igvn optimize it.
4894
b9bc6cae88f2 7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents: 4792
diff changeset
301 assert(p2x->outcnt() == 0 || p2x->unique_out()->Opcode() == Op_URShiftX, "");
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 780
diff changeset
302 _igvn.replace_node(p2x, top());
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
303 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
304 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
305
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
306 // Search for a memory operation for the specified memory slice.
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
307 static Node *scan_mem_chain(Node *mem, int alias_idx, int offset, Node *start_mem, Node *alloc, PhaseGVN *phase) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
308 Node *orig_mem = mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
309 Node *alloc_mem = alloc->in(TypeFunc::Memory);
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
310 const TypeOopPtr *tinst = phase->C->get_adr_type(alias_idx)->isa_oopptr();
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
311 while (true) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
312 if (mem == alloc_mem || mem == start_mem ) {
605
98cb887364d3 6810672: Comment typos
twisti
parents: 601
diff changeset
313 return mem; // hit one of our sentinels
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
314 } else if (mem->is_MergeMem()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
315 mem = mem->as_MergeMem()->memory_at(alias_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
316 } else if (mem->is_Proj() && mem->as_Proj()->_con == TypeFunc::Memory) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
317 Node *in = mem->in(0);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
318 // we can safely skip over safepoints, calls, locks and membars because we
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
319 // already know that the object is safe to eliminate.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
320 if (in->is_Initialize() && in->as_Initialize()->allocation() == alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
321 return in;
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
322 } else if (in->is_Call()) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
323 CallNode *call = in->as_Call();
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
324 if (!call->may_modify(tinst, phase)) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
325 mem = call->in(TypeFunc::Memory);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
326 }
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
327 mem = in->in(TypeFunc::Memory);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
328 } else if (in->is_MemBar()) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
329 mem = in->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
330 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
331 assert(false, "unexpected projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
332 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
333 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
334 const TypePtr* atype = mem->as_Store()->adr_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
335 int adr_idx = Compile::current()->get_alias_index(atype);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
336 if (adr_idx == alias_idx) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
337 assert(atype->isa_oopptr(), "address type must be oopptr");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
338 int adr_offset = atype->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
339 uint adr_iid = atype->is_oopptr()->instance_id();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
340 // Array elements references have the same alias_idx
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
341 // but different offset and different instance_id.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
342 if (adr_offset == offset && adr_iid == alloc->_idx)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
343 return mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
344 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
345 assert(adr_idx == Compile::AliasIdxRaw, "address must match or be raw");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
346 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
347 mem = mem->in(MemNode::Memory);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
348 } else if (mem->is_ClearArray()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
349 if (!ClearArrayNode::step_through(&mem, alloc->_idx, phase)) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
350 // Can not bypass initialization of the instance
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
351 // we are looking.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
352 debug_only(intptr_t offset;)
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
353 assert(alloc == AllocateNode::Ideal_allocation(mem->in(3), phase, offset), "sanity");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
354 InitializeNode* init = alloc->as_Allocate()->initialization();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
355 // We are looking for stored value, return Initialize node
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
356 // or memory edge from Allocate node.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
357 if (init != NULL)
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
358 return init;
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
359 else
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
360 return alloc->in(TypeFunc::Memory); // It will produce zero value (see callers).
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
361 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
362 // Otherwise skip it (the call updated 'mem' value).
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
363 } else if (mem->Opcode() == Op_SCMemProj) {
7637
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
364 mem = mem->in(0);
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
365 Node* adr = NULL;
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
366 if (mem->is_LoadStore()) {
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
367 adr = mem->in(MemNode::Address);
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
368 } else {
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
369 assert(mem->Opcode() == Op_EncodeISOArray, "sanity");
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
370 adr = mem->in(3); // Destination array
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
371 }
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
372 const TypePtr* atype = adr->bottom_type()->is_ptr();
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
373 int adr_idx = Compile::current()->get_alias_index(atype);
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
374 if (adr_idx == alias_idx) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
375 assert(false, "Object is not scalar replaceable if a LoadStore node access its field");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
376 return NULL;
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
377 }
7637
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
378 mem = mem->in(MemNode::Memory);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
379 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
380 return mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
381 }
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
382 assert(mem != orig_mem, "dead memory loop");
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
383 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
384 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
385
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
386 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
387 // Given a Memory Phi, compute a value Phi containing the values from stores
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
388 // on the input paths.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
389 // Note: this function is recursive, its depth is limied by the "level" argument
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
390 // Returns the computed Phi, or NULL if it cannot compute it.
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
391 Node *PhaseMacroExpand::value_from_mem_phi(Node *mem, BasicType ft, const Type *phi_type, const TypeOopPtr *adr_t, Node *alloc, Node_Stack *value_phis, int level) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
392 assert(mem->is_Phi(), "sanity");
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
393 int alias_idx = C->get_alias_index(adr_t);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
394 int offset = adr_t->offset();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
395 int instance_id = adr_t->instance_id();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
396
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
397 // Check if an appropriate value phi already exists.
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
398 Node* region = mem->in(0);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
399 for (DUIterator_Fast kmax, k = region->fast_outs(kmax); k < kmax; k++) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
400 Node* phi = region->fast_out(k);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
401 if (phi->is_Phi() && phi != mem &&
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
402 phi->as_Phi()->is_same_inst_field(phi_type, instance_id, alias_idx, offset)) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
403 return phi;
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
404 }
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
405 }
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
406 // Check if an appropriate new value phi already exists.
3788
e3cbc9ddd434 7044738: Loop unroll optimization causes incorrect result
kvn
parents: 3754
diff changeset
407 Node* new_phi = value_phis->find(mem->_idx);
e3cbc9ddd434 7044738: Loop unroll optimization causes incorrect result
kvn
parents: 3754
diff changeset
408 if (new_phi != NULL)
e3cbc9ddd434 7044738: Loop unroll optimization causes incorrect result
kvn
parents: 3754
diff changeset
409 return new_phi;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
410
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
411 if (level <= 0) {
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
412 return NULL; // Give up: phi tree too deep
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
413 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
414 Node *start_mem = C->start()->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
415 Node *alloc_mem = alloc->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
416
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
417 uint length = mem->req();
6197
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 6144
diff changeset
418 GrowableArray <Node *> values(length, length, NULL, false);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
419
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
420 // create a new Phi for the value
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
421 PhiNode *phi = new (C) PhiNode(mem->in(0), phi_type, NULL, instance_id, alias_idx, offset);
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
422 transform_later(phi);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
423 value_phis->push(phi, mem->_idx);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
424
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
425 for (uint j = 1; j < length; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
426 Node *in = mem->in(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
427 if (in == NULL || in->is_top()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
428 values.at_put(j, in);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
429 } else {
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
430 Node *val = scan_mem_chain(in, alias_idx, offset, start_mem, alloc, &_igvn);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
431 if (val == start_mem || val == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
432 // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
433 values.at_put(j, _igvn.zerocon(ft));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
434 continue;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
435 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
436 if (val->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
437 val = val->as_Initialize()->find_captured_store(offset, type2aelembytes(ft), &_igvn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
438 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
439 if (val == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
440 return NULL; // can't find a value on this path
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
441 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
442 if (val == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
443 values.at_put(j, mem);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
444 } else if (val->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
445 values.at_put(j, val->in(MemNode::ValueIn));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
446 } else if(val->is_Proj() && val->in(0) == alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
447 values.at_put(j, _igvn.zerocon(ft));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
448 } else if (val->is_Phi()) {
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
449 val = value_from_mem_phi(val, ft, phi_type, adr_t, alloc, value_phis, level-1);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
450 if (val == NULL) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
451 return NULL;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
452 }
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
453 values.at_put(j, val);
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
454 } else if (val->Opcode() == Op_SCMemProj) {
7637
b30b3c2a0cf2 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents: 7196
diff changeset
455 assert(val->in(0)->is_LoadStore() || val->in(0)->Opcode() == Op_EncodeISOArray, "sanity");
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
456 assert(false, "Object is not scalar replaceable if a LoadStore node access its field");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
457 return NULL;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
458 } else {
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
459 #ifdef ASSERT
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
460 val->dump();
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
461 assert(false, "unknown node on this path");
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 565
diff changeset
462 #endif
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
463 return NULL; // unknown node on this path
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
464 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
465 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
466 }
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
467 // Set Phi's inputs
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
468 for (uint j = 1; j < length; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
469 if (values.at(j) == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
470 phi->init_req(j, phi);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
471 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
472 phi->init_req(j, values.at(j));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
473 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
474 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
475 return phi;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
476 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
477
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
478 // Search the last value stored into the object's field.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
479 Node *PhaseMacroExpand::value_from_mem(Node *sfpt_mem, BasicType ft, const Type *ftype, const TypeOopPtr *adr_t, Node *alloc) {
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
480 assert(adr_t->is_known_instance_field(), "instance required");
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
481 int instance_id = adr_t->instance_id();
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
482 assert((uint)instance_id == alloc->_idx, "wrong allocation");
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
483
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
484 int alias_idx = C->get_alias_index(adr_t);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
485 int offset = adr_t->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
486 Node *start_mem = C->start()->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
487 Node *alloc_ctrl = alloc->in(TypeFunc::Control);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
488 Node *alloc_mem = alloc->in(TypeFunc::Memory);
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
489 Arena *a = Thread::current()->resource_area();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
490 VectorSet visited(a);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
491
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
492
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
493 bool done = sfpt_mem == alloc_mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
494 Node *mem = sfpt_mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
495 while (!done) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
496 if (visited.test_set(mem->_idx)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
497 return NULL; // found a loop, give up
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
498 }
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
499 mem = scan_mem_chain(mem, alias_idx, offset, start_mem, alloc, &_igvn);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
500 if (mem == start_mem || mem == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
501 done = true; // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
502 } else if (mem->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
503 mem = mem->as_Initialize()->find_captured_store(offset, type2aelembytes(ft), &_igvn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
504 if (mem == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
505 done = true; // Something go wrong.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
506 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
507 const TypePtr* atype = mem->as_Store()->adr_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
508 assert(C->get_alias_index(atype) == Compile::AliasIdxRaw, "store is correct memory slice");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
509 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
510 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
511 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
512 const TypeOopPtr* atype = mem->as_Store()->adr_type()->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
513 assert(atype != NULL, "address type must be oopptr");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
514 assert(C->get_alias_index(atype) == alias_idx &&
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
515 atype->is_known_instance_field() && atype->offset() == offset &&
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
516 atype->instance_id() == instance_id, "store is correct memory slice");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
517 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
518 } else if (mem->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
519 // try to find a phi's unique input
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
520 Node *unique_input = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
521 Node *top = C->top();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
522 for (uint i = 1; i < mem->req(); i++) {
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
523 Node *n = scan_mem_chain(mem->in(i), alias_idx, offset, start_mem, alloc, &_igvn);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
524 if (n == NULL || n == top || n == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
525 continue;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
526 } else if (unique_input == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
527 unique_input = n;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
528 } else if (unique_input != n) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
529 unique_input = top;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
530 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
531 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
532 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
533 if (unique_input != NULL && unique_input != top) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
534 mem = unique_input;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
535 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
536 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
537 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
538 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
539 assert(false, "unexpected node");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
540 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
541 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
542 if (mem != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
543 if (mem == start_mem || mem == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
544 // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
545 return _igvn.zerocon(ft);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
546 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
547 return mem->in(MemNode::ValueIn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
548 } else if (mem->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
549 // attempt to produce a Phi reflecting the values on the input paths of the Phi
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
550 Node_Stack value_phis(a, 8);
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
551 Node * phi = value_from_mem_phi(mem, ft, ftype, adr_t, alloc, &value_phis, ValueSearchLimit);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
552 if (phi != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
553 return phi;
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
554 } else {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
555 // Kill all new Phis
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
556 while(value_phis.is_nonempty()) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
557 Node* n = value_phis.node();
1621
6027dddc26c6 6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()
kvn
parents: 1609
diff changeset
558 _igvn.replace_node(n, C->top());
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
559 value_phis.pop();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 235
diff changeset
560 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
561 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
562 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
563 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
564 // Something go wrong.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
565 return NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
566 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
567
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
568 // Check the possibility of scalar replacement.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
569 bool PhaseMacroExpand::can_eliminate_allocation(AllocateNode *alloc, GrowableArray <SafePointNode *>& safepoints) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
570 // Scan the uses of the allocation to check for anything that would
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
571 // prevent us from eliminating it.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
572 NOT_PRODUCT( const char* fail_eliminate = NULL; )
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
573 DEBUG_ONLY( Node* disq_node = NULL; )
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
574 bool can_eliminate = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
575
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
576 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
577 const TypeOopPtr* res_type = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
578 if (res == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
579 // All users were eliminated.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
580 } else if (!res->is_CheckCastPP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
581 NOT_PRODUCT(fail_eliminate = "Allocation does not have unique CheckCastPP";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
582 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
583 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
584 res_type = _igvn.type(res)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
585 if (res_type == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
586 NOT_PRODUCT(fail_eliminate = "Neither instance or array allocation";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
587 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
588 } else if (res_type->isa_aryptr()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
589 int length = alloc->in(AllocateNode::ALength)->find_int_con(-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
590 if (length < 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
591 NOT_PRODUCT(fail_eliminate = "Array's size is not constant";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
592 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
593 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
594 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
595 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
596
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
597 if (can_eliminate && res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
598 for (DUIterator_Fast jmax, j = res->fast_outs(jmax);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
599 j < jmax && can_eliminate; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
600 Node* use = res->fast_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
601
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
602 if (use->is_AddP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
603 const TypePtr* addp_type = _igvn.type(use)->is_ptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
604 int offset = addp_type->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
605
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
606 if (offset == Type::OffsetTop || offset == Type::OffsetBot) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
607 NOT_PRODUCT(fail_eliminate = "Undefined field referrence";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
608 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
609 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
610 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
611 for (DUIterator_Fast kmax, k = use->fast_outs(kmax);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
612 k < kmax && can_eliminate; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
613 Node* n = use->fast_out(k);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
614 if (!n->is_Store() && n->Opcode() != Op_CastP2X) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
615 DEBUG_ONLY(disq_node = n;)
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
616 if (n->is_Load() || n->is_LoadStore()) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
617 NOT_PRODUCT(fail_eliminate = "Field load";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
618 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
619 NOT_PRODUCT(fail_eliminate = "Not store field referrence";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
620 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
621 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
622 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
623 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
624 } else if (use->is_SafePoint()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
625 SafePointNode* sfpt = use->as_SafePoint();
168
7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents: 163
diff changeset
626 if (sfpt->is_Call() && sfpt->as_Call()->has_non_debug_use(res)) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
627 // Object is passed as argument.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
628 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
629 NOT_PRODUCT(fail_eliminate = "Object is passed as argument";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
630 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
631 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
632 Node* sfptMem = sfpt->memory();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
633 if (sfptMem == NULL || sfptMem->is_top()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
634 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
635 NOT_PRODUCT(fail_eliminate = "NULL or TOP memory";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
636 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
637 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
638 safepoints.append_if_missing(sfpt);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
639 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
640 } else if (use->Opcode() != Op_CastP2X) { // CastP2X is used by card mark
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
641 if (use->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
642 if (use->outcnt() == 1 && use->unique_out()->Opcode() == Op_Return) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
643 NOT_PRODUCT(fail_eliminate = "Object is return value";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
644 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
645 NOT_PRODUCT(fail_eliminate = "Object is referenced by Phi";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
646 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
647 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
648 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
649 if (use->Opcode() == Op_Return) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
650 NOT_PRODUCT(fail_eliminate = "Object is return value";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
651 }else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
652 NOT_PRODUCT(fail_eliminate = "Object is referenced by node";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
653 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
654 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
655 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
656 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
657 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
658 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
659 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
660
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
661 #ifndef PRODUCT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
662 if (PrintEliminateAllocations) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
663 if (can_eliminate) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
664 tty->print("Scalar ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
665 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
666 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
667 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
668 res->dump();
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
669 } else if (alloc->_is_scalar_replaceable) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
670 tty->print("NotScalar (%s)", fail_eliminate);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
671 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
672 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
673 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
674 res->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
675 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
676 if (disq_node != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
677 tty->print(" >>>> ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
678 disq_node->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
679 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
680 #endif /*ASSERT*/
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
681 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
682 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
683 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
684 return can_eliminate;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
685 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
686
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
687 // Do scalar replacement.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
688 bool PhaseMacroExpand::scalar_replacement(AllocateNode *alloc, GrowableArray <SafePointNode *>& safepoints) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
689 GrowableArray <SafePointNode *> safepoints_done;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
690
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
691 ciKlass* klass = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
692 ciInstanceKlass* iklass = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
693 int nfields = 0;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
694 int array_base;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
695 int element_size;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
696 BasicType basic_elem_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
697 ciType* elem_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
698
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
699 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
700 const TypeOopPtr* res_type = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
701 if (res != NULL) { // Could be NULL when there are no users
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
702 res_type = _igvn.type(res)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
703 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
704
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
705 if (res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
706 klass = res_type->klass();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
707 if (res_type->isa_instptr()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
708 // find the fields of the class which will be needed for safepoint debug information
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
709 assert(klass->is_instance_klass(), "must be an instance klass.");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
710 iklass = klass->as_instance_klass();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
711 nfields = iklass->nof_nonstatic_fields();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
712 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
713 // find the array's elements which will be needed for safepoint debug information
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
714 nfields = alloc->in(AllocateNode::ALength)->find_int_con(-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
715 assert(klass->is_array_klass() && nfields >= 0, "must be an array klass.");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
716 elem_type = klass->as_array_klass()->element_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
717 basic_elem_type = elem_type->basic_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
718 array_base = arrayOopDesc::base_offset_in_bytes(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
719 element_size = type2aelembytes(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
720 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
721 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
722 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
723 // Process the safepoint uses
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
724 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
725 while (safepoints.length() > 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
726 SafePointNode* sfpt = safepoints.pop();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
727 Node* mem = sfpt->memory();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
728 uint first_ind = sfpt->req();
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
729 SafePointScalarObjectNode* sobj = new (C) SafePointScalarObjectNode(res_type,
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
730 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
731 alloc,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
732 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
733 first_ind, nfields);
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
734 sobj->init_req(0, C->root());
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
735 transform_later(sobj);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
736
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
737 // Scan object's fields adding an input to the safepoint for each field.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
738 for (int j = 0; j < nfields; j++) {
306
af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 253
diff changeset
739 intptr_t offset;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
740 ciField* field = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
741 if (iklass != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
742 field = iklass->nonstatic_field_at(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
743 offset = field->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
744 elem_type = field->type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
745 basic_elem_type = field->layout_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
746 } else {
306
af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 253
diff changeset
747 offset = array_base + j * (intptr_t)element_size;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
748 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
749
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
750 const Type *field_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
751 // The next code is taken from Parse::do_get_xxx().
124
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
752 if (basic_elem_type == T_OBJECT || basic_elem_type == T_ARRAY) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
753 if (!elem_type->is_loaded()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
754 field_type = TypeInstPtr::BOTTOM;
1682
e5dfb3ccb88b 6969569: assert(is_static() && is_constant()) failed: illegal call to constant_value()
kvn
parents: 1621
diff changeset
755 } else if (field != NULL && field->is_constant() && field->is_static()) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
756 // This can happen if the constant oop is non-perm.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
757 ciObject* con = field->constant_value().as_object();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
758 // Do not "join" in the previous type; it doesn't add value,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
759 // and may yield a vacuous result if the field is of interface type.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
760 field_type = TypeOopPtr::make_from_constant(con)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
761 assert(field_type != NULL, "field singleton type must be consistent");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
762 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
763 field_type = TypeOopPtr::make_from_klass(elem_type->as_klass());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
764 }
124
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
765 if (UseCompressedOops) {
221
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 216
diff changeset
766 field_type = field_type->make_narrowoop();
124
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
767 basic_elem_type = T_NARROWOOP;
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
768 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
769 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
770 field_type = Type::get_const_basic_type(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
771 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
772
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
773 const TypeOopPtr *field_addr_type = res_type->add_offset(offset)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
774
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
775 Node *field_val = value_from_mem(mem, basic_elem_type, field_type, field_addr_type, alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
776 if (field_val == NULL) {
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
777 // We weren't able to find a value for this field,
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
778 // give up on eliminating this allocation.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
779
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
780 // Remove any extra entries we added to the safepoint.
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
781 uint last = sfpt->req() - 1;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
782 for (int k = 0; k < j; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
783 sfpt->del_req(last--);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
784 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
785 // rollback processed safepoints
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
786 while (safepoints_done.length() > 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
787 SafePointNode* sfpt_done = safepoints_done.pop();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
788 // remove any extra entries we added to the safepoint
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
789 last = sfpt_done->req() - 1;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
790 for (int k = 0; k < nfields; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
791 sfpt_done->del_req(last--);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
792 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
793 JVMState *jvms = sfpt_done->jvms();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
794 jvms->set_endoff(sfpt_done->req());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
795 // Now make a pass over the debug information replacing any references
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
796 // to SafePointScalarObjectNode with the allocated object.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
797 int start = jvms->debug_start();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
798 int end = jvms->debug_end();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
799 for (int i = start; i < end; i++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
800 if (sfpt_done->in(i)->is_SafePointScalarObject()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
801 SafePointScalarObjectNode* scobj = sfpt_done->in(i)->as_SafePointScalarObject();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
802 if (scobj->first_index() == sfpt_done->req() &&
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
803 scobj->n_fields() == (uint)nfields) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
804 assert(scobj->alloc() == alloc, "sanity");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
805 sfpt_done->set_req(i, res);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
806 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
807 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
808 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
809 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
810 #ifndef PRODUCT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
811 if (PrintEliminateAllocations) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
812 if (field != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
813 tty->print("=== At SafePoint node %d can't find value of Field: ",
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
814 sfpt->_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
815 field->print();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
816 int field_idx = C->get_alias_index(field_addr_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
817 tty->print(" (alias_idx=%d)", field_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
818 } else { // Array's element
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
819 tty->print("=== At SafePoint node %d can't find value of array element [%d]",
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
820 sfpt->_idx, j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
821 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
822 tty->print(", which prevents elimination of: ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
823 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
824 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
825 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
826 res->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
827 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
828 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
829 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
830 }
124
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
831 if (UseCompressedOops && field_type->isa_narrowoop()) {
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
832 // Enable "DecodeN(EncodeP(Allocate)) --> Allocate" transformation
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
833 // to be able scalar replace the allocation.
221
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 216
diff changeset
834 if (field_val->is_EncodeP()) {
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 216
diff changeset
835 field_val = field_val->in(1);
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 216
diff changeset
836 } else {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
837 field_val = transform_later(new (C) DecodeNNode(field_val, field_val->bottom_type()->make_ptr()));
221
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 216
diff changeset
838 }
124
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 113
diff changeset
839 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
840 sfpt->add_req(field_val);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
841 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
842 JVMState *jvms = sfpt->jvms();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
843 jvms->set_endoff(sfpt->req());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
844 // Now make a pass over the debug information replacing any references
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
845 // to the allocated object with "sobj"
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
846 int start = jvms->debug_start();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
847 int end = jvms->debug_end();
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
848 sfpt->replace_edges_in_range(res, sobj, start, end);
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
849 safepoints_done.append_if_missing(sfpt); // keep it for rollback
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
850 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
851 return true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
852 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
853
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
854 // Process users of eliminated allocation.
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
855 void PhaseMacroExpand::process_users_of_allocation(CallNode *alloc) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
856 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
857 if (res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
858 for (DUIterator_Last jmin, j = res->last_outs(jmin); j >= jmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
859 Node *use = res->last_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
860 uint oc1 = res->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
861
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
862 if (use->is_AddP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
863 for (DUIterator_Last kmin, k = use->last_outs(kmin); k >= kmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
864 Node *n = use->last_out(k);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
865 uint oc2 = use->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
866 if (n->is_Store()) {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
867 #ifdef ASSERT
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
868 // Verify that there is no dependent MemBarVolatile nodes,
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
869 // they should be removed during IGVN, see MemBarNode::Ideal().
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
870 for (DUIterator_Fast pmax, p = n->fast_outs(pmax);
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
871 p < pmax; p++) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
872 Node* mb = n->fast_out(p);
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
873 assert(mb->is_Initialize() || !mb->is_MemBar() ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
874 mb->req() <= MemBarNode::Precedent ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
875 mb->in(MemBarNode::Precedent) != n,
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
876 "MemBarVolatile should be eliminated for non-escaping object");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
877 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1080
diff changeset
878 #endif
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
879 _igvn.replace_node(n, n->in(MemNode::Memory));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
880 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
881 eliminate_card_mark(n);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
882 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
883 k -= (oc2 - use->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
884 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
885 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
886 eliminate_card_mark(use);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
887 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
888 j -= (oc1 - res->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
889 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
890 assert(res->outcnt() == 0, "all uses of allocated objects must be deleted");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
891 _igvn.remove_dead_node(res);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
892 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
893
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
894 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
895 // Process other users of allocation's projections
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
896 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
897 if (_resproj != NULL && _resproj->outcnt() != 0) {
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
898 // First disconnect stores captured by Initialize node.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
899 // If Initialize node is eliminated first in the following code,
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
900 // it will kill such stores and DUIterator_Last will assert.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
901 for (DUIterator_Fast jmax, j = _resproj->fast_outs(jmax); j < jmax; j++) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
902 Node *use = _resproj->fast_out(j);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
903 if (use->is_AddP()) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
904 // raw memory addresses used only by the initialization
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
905 _igvn.replace_node(use, C->top());
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
906 --j; --jmax;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
907 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
908 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
909 for (DUIterator_Last jmin, j = _resproj->last_outs(jmin); j >= jmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
910 Node *use = _resproj->last_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
911 uint oc1 = _resproj->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
912 if (use->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
913 // Eliminate Initialize node.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
914 InitializeNode *init = use->as_Initialize();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
915 assert(init->outcnt() <= 2, "only a control and memory projection expected");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
916 Node *ctrl_proj = init->proj_out(TypeFunc::Control);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
917 if (ctrl_proj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
918 assert(init->in(TypeFunc::Control) == _fallthroughcatchproj, "allocation control projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
919 _igvn.replace_node(ctrl_proj, _fallthroughcatchproj);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
920 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
921 Node *mem_proj = init->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
922 if (mem_proj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
923 Node *mem = init->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
924 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
925 if (mem->is_MergeMem()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
926 assert(mem->in(TypeFunc::Memory) == _memproj_fallthrough, "allocation memory projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
927 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
928 assert(mem == _memproj_fallthrough, "allocation memory projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
929 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
930 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
931 _igvn.replace_node(mem_proj, mem);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
932 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
933 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
934 assert(false, "only Initialize or AddP expected");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
935 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
936 j -= (oc1 - _resproj->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
937 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
938 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
939 if (_fallthroughcatchproj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
940 _igvn.replace_node(_fallthroughcatchproj, alloc->in(TypeFunc::Control));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
941 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
942 if (_memproj_fallthrough != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
943 _igvn.replace_node(_memproj_fallthrough, alloc->in(TypeFunc::Memory));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
944 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
945 if (_memproj_catchall != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
946 _igvn.replace_node(_memproj_catchall, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
947 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
948 if (_ioproj_fallthrough != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
949 _igvn.replace_node(_ioproj_fallthrough, alloc->in(TypeFunc::I_O));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
950 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
951 if (_ioproj_catchall != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
952 _igvn.replace_node(_ioproj_catchall, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
953 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
954 if (_catchallcatchproj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
955 _igvn.replace_node(_catchallcatchproj, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
956 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
957 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
958
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
959 bool PhaseMacroExpand::eliminate_allocate_node(AllocateNode *alloc) {
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
960 if (!EliminateAllocations || !alloc->_is_non_escaping) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
961 return false;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
962 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
963 Node* klass = alloc->in(AllocateNode::KlassNode);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
964 const TypeKlassPtr* tklass = _igvn.type(klass)->is_klassptr();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
965 Node* res = alloc->result_cast();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
966 // Eliminate boxing allocations which are not used
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
967 // regardless scalar replacable status.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
968 bool boxing_alloc = C->eliminate_boxing() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
969 tklass->klass()->is_instance_klass() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
970 tklass->klass()->as_instance_klass()->is_box_klass();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
971 if (!alloc->_is_scalar_replaceable && (!boxing_alloc || (res != NULL))) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
972 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
973 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
974
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
975 extract_call_projections(alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
976
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
977 GrowableArray <SafePointNode *> safepoints;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
978 if (!can_eliminate_allocation(alloc, safepoints)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
979 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
980 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
981
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
982 if (!alloc->_is_scalar_replaceable) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
983 assert(res == NULL, "sanity");
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
984 // We can only eliminate allocation if all debug info references
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
985 // are already replaced with SafePointScalarObject because
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
986 // we can't search for a fields value without instance_id.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
987 if (safepoints.length() > 0) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
988 return false;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
989 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
990 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
991
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
992 if (!scalar_replacement(alloc, safepoints)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
993 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
994 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
995
1080
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
996 CompileLog* log = C->log();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
997 if (log != NULL) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
998 log->head("eliminate_allocation type='%d'",
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
999 log->identify(tklass->klass()));
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1000 JVMState* p = alloc->jvms();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1001 while (p != NULL) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1002 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method()));
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1003 p = p->caller();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1004 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1005 log->tail("eliminate_allocation");
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1006 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1007
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1008 process_users_of_allocation(alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1009
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1010 #ifndef PRODUCT
1080
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1011 if (PrintEliminateAllocations) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1012 if (alloc->is_AllocateArray())
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1013 tty->print_cr("++++ Eliminated: %d AllocateArray", alloc->_idx);
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1014 else
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1015 tty->print_cr("++++ Eliminated: %d Allocate", alloc->_idx);
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
1016 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1017 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1018
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1019 return true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1020 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
1021
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1022 bool PhaseMacroExpand::eliminate_boxing_node(CallStaticJavaNode *boxing) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1023 // EA should remove all uses of non-escaping boxing node.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1024 if (!C->eliminate_boxing() || boxing->proj_out(TypeFunc::Parms) != NULL) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1025 return false;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1026 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1027
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1028 extract_call_projections(boxing);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1029
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1030 const TypeTuple* r = boxing->tf()->range();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1031 assert(r->cnt() > TypeFunc::Parms, "sanity");
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1032 const TypeInstPtr* t = r->field_at(TypeFunc::Parms)->isa_instptr();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1033 assert(t != NULL, "sanity");
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1034
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1035 CompileLog* log = C->log();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1036 if (log != NULL) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1037 log->head("eliminate_boxing type='%d'",
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1038 log->identify(t->klass()));
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1039 JVMState* p = boxing->jvms();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1040 while (p != NULL) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1041 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method()));
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1042 p = p->caller();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1043 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1044 log->tail("eliminate_boxing");
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1045 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1046
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1047 process_users_of_allocation(boxing);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1048
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1049 #ifndef PRODUCT
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1050 if (PrintEliminateAllocations) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1051 tty->print("++++ Eliminated: %d ", boxing->_idx);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1052 boxing->method()->print_short_name(tty);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1053 tty->cr();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1054 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1055 #endif
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1056
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1057 return true;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
1058 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1059
a61af66fc99e Initial load
duke
parents:
diff changeset
1060 //---------------------------set_eden_pointers-------------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
1061 void PhaseMacroExpand::set_eden_pointers(Node* &eden_top_adr, Node* &eden_end_adr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1062 if (UseTLAB) { // Private allocation: load from TLS
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1063 Node* thread = transform_later(new (C) ThreadLocalNode());
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1064 int tlab_top_offset = in_bytes(JavaThread::tlab_top_offset());
a61af66fc99e Initial load
duke
parents:
diff changeset
1065 int tlab_end_offset = in_bytes(JavaThread::tlab_end_offset());
a61af66fc99e Initial load
duke
parents:
diff changeset
1066 eden_top_adr = basic_plus_adr(top()/*not oop*/, thread, tlab_top_offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
1067 eden_end_adr = basic_plus_adr(top()/*not oop*/, thread, tlab_end_offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
1068 } else { // Shared allocation: load from globals
a61af66fc99e Initial load
duke
parents:
diff changeset
1069 CollectedHeap* ch = Universe::heap();
a61af66fc99e Initial load
duke
parents:
diff changeset
1070 address top_adr = (address)ch->top_addr();
a61af66fc99e Initial load
duke
parents:
diff changeset
1071 address end_adr = (address)ch->end_addr();
a61af66fc99e Initial load
duke
parents:
diff changeset
1072 eden_top_adr = makecon(TypeRawPtr::make(top_adr));
a61af66fc99e Initial load
duke
parents:
diff changeset
1073 eden_end_adr = basic_plus_adr(eden_top_adr, end_adr - top_adr);
a61af66fc99e Initial load
duke
parents:
diff changeset
1074 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1075 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1076
a61af66fc99e Initial load
duke
parents:
diff changeset
1077
a61af66fc99e Initial load
duke
parents:
diff changeset
1078 Node* PhaseMacroExpand::make_load(Node* ctl, Node* mem, Node* base, int offset, const Type* value_type, BasicType bt) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1079 Node* adr = basic_plus_adr(base, offset);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
1080 const TypePtr* adr_type = adr->bottom_type()->is_ptr();
113
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
1081 Node* value = LoadNode::make(_igvn, ctl, mem, adr, adr_type, value_type, bt);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1082 transform_later(value);
a61af66fc99e Initial load
duke
parents:
diff changeset
1083 return value;
a61af66fc99e Initial load
duke
parents:
diff changeset
1084 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1085
a61af66fc99e Initial load
duke
parents:
diff changeset
1086
a61af66fc99e Initial load
duke
parents:
diff changeset
1087 Node* PhaseMacroExpand::make_store(Node* ctl, Node* mem, Node* base, int offset, Node* value, BasicType bt) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1088 Node* adr = basic_plus_adr(base, offset);
113
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
1089 mem = StoreNode::make(_igvn, ctl, mem, adr, NULL, value, bt);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1090 transform_later(mem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1091 return mem;
a61af66fc99e Initial load
duke
parents:
diff changeset
1092 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1093
a61af66fc99e Initial load
duke
parents:
diff changeset
1094 //=============================================================================
a61af66fc99e Initial load
duke
parents:
diff changeset
1095 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1096 // A L L O C A T I O N
a61af66fc99e Initial load
duke
parents:
diff changeset
1097 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1098 // Allocation attempts to be fast in the case of frequent small objects.
a61af66fc99e Initial load
duke
parents:
diff changeset
1099 // It breaks down like this:
a61af66fc99e Initial load
duke
parents:
diff changeset
1100 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1101 // 1) Size in doublewords is computed. This is a constant for objects and
a61af66fc99e Initial load
duke
parents:
diff changeset
1102 // variable for most arrays. Doubleword units are used to avoid size
a61af66fc99e Initial load
duke
parents:
diff changeset
1103 // overflow of huge doubleword arrays. We need doublewords in the end for
a61af66fc99e Initial load
duke
parents:
diff changeset
1104 // rounding.
a61af66fc99e Initial load
duke
parents:
diff changeset
1105 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1106 // 2) Size is checked for being 'too large'. Too-large allocations will go
a61af66fc99e Initial load
duke
parents:
diff changeset
1107 // the slow path into the VM. The slow path can throw any required
a61af66fc99e Initial load
duke
parents:
diff changeset
1108 // exceptions, and does all the special checks for very large arrays. The
a61af66fc99e Initial load
duke
parents:
diff changeset
1109 // size test can constant-fold away for objects. For objects with
a61af66fc99e Initial load
duke
parents:
diff changeset
1110 // finalizers it constant-folds the otherway: you always go slow with
a61af66fc99e Initial load
duke
parents:
diff changeset
1111 // finalizers.
a61af66fc99e Initial load
duke
parents:
diff changeset
1112 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1113 // 3) If NOT using TLABs, this is the contended loop-back point.
a61af66fc99e Initial load
duke
parents:
diff changeset
1114 // Load-Locked the heap top. If using TLABs normal-load the heap top.
a61af66fc99e Initial load
duke
parents:
diff changeset
1115 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1116 // 4) Check that heap top + size*8 < max. If we fail go the slow ` route.
a61af66fc99e Initial load
duke
parents:
diff changeset
1117 // NOTE: "top+size*8" cannot wrap the 4Gig line! Here's why: for largish
a61af66fc99e Initial load
duke
parents:
diff changeset
1118 // "size*8" we always enter the VM, where "largish" is a constant picked small
a61af66fc99e Initial load
duke
parents:
diff changeset
1119 // enough that there's always space between the eden max and 4Gig (old space is
a61af66fc99e Initial load
duke
parents:
diff changeset
1120 // there so it's quite large) and large enough that the cost of entering the VM
a61af66fc99e Initial load
duke
parents:
diff changeset
1121 // is dwarfed by the cost to initialize the space.
a61af66fc99e Initial load
duke
parents:
diff changeset
1122 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1123 // 5) If NOT using TLABs, Store-Conditional the adjusted heap top back
a61af66fc99e Initial load
duke
parents:
diff changeset
1124 // down. If contended, repeat at step 3. If using TLABs normal-store
a61af66fc99e Initial load
duke
parents:
diff changeset
1125 // adjusted heap top back down; there is no contention.
a61af66fc99e Initial load
duke
parents:
diff changeset
1126 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1127 // 6) If !ZeroTLAB then Bulk-clear the object/array. Fill in klass & mark
a61af66fc99e Initial load
duke
parents:
diff changeset
1128 // fields.
a61af66fc99e Initial load
duke
parents:
diff changeset
1129 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1130 // 7) Merge with the slow-path; cast the raw memory pointer to the correct
a61af66fc99e Initial load
duke
parents:
diff changeset
1131 // oop flavor.
a61af66fc99e Initial load
duke
parents:
diff changeset
1132 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1133 //=============================================================================
a61af66fc99e Initial load
duke
parents:
diff changeset
1134 // FastAllocateSizeLimit value is in DOUBLEWORDS.
a61af66fc99e Initial load
duke
parents:
diff changeset
1135 // Allocations bigger than this always go the slow route.
a61af66fc99e Initial load
duke
parents:
diff changeset
1136 // This value must be small enough that allocation attempts that need to
a61af66fc99e Initial load
duke
parents:
diff changeset
1137 // trigger exceptions go the slow route. Also, it must be small enough so
a61af66fc99e Initial load
duke
parents:
diff changeset
1138 // that heap_top + size_in_bytes does not wrap around the 4Gig limit.
a61af66fc99e Initial load
duke
parents:
diff changeset
1139 //=============================================================================j//
a61af66fc99e Initial load
duke
parents:
diff changeset
1140 // %%% Here is an old comment from parseHelper.cpp; is it outdated?
a61af66fc99e Initial load
duke
parents:
diff changeset
1141 // The allocator will coalesce int->oop copies away. See comment in
a61af66fc99e Initial load
duke
parents:
diff changeset
1142 // coalesce.cpp about how this works. It depends critically on the exact
a61af66fc99e Initial load
duke
parents:
diff changeset
1143 // code shape produced here, so if you are changing this code shape
a61af66fc99e Initial load
duke
parents:
diff changeset
1144 // make sure the GC info for the heap-top is correct in and around the
a61af66fc99e Initial load
duke
parents:
diff changeset
1145 // slow-path call.
a61af66fc99e Initial load
duke
parents:
diff changeset
1146 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1147
a61af66fc99e Initial load
duke
parents:
diff changeset
1148 void PhaseMacroExpand::expand_allocate_common(
a61af66fc99e Initial load
duke
parents:
diff changeset
1149 AllocateNode* alloc, // allocation node to be expanded
a61af66fc99e Initial load
duke
parents:
diff changeset
1150 Node* length, // array length for an array allocation
a61af66fc99e Initial load
duke
parents:
diff changeset
1151 const TypeFunc* slow_call_type, // Type of slow call
a61af66fc99e Initial load
duke
parents:
diff changeset
1152 address slow_call_address // Address of slow call
a61af66fc99e Initial load
duke
parents:
diff changeset
1153 )
a61af66fc99e Initial load
duke
parents:
diff changeset
1154 {
a61af66fc99e Initial load
duke
parents:
diff changeset
1155
a61af66fc99e Initial load
duke
parents:
diff changeset
1156 Node* ctrl = alloc->in(TypeFunc::Control);
a61af66fc99e Initial load
duke
parents:
diff changeset
1157 Node* mem = alloc->in(TypeFunc::Memory);
a61af66fc99e Initial load
duke
parents:
diff changeset
1158 Node* i_o = alloc->in(TypeFunc::I_O);
a61af66fc99e Initial load
duke
parents:
diff changeset
1159 Node* size_in_bytes = alloc->in(AllocateNode::AllocSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
1160 Node* klass_node = alloc->in(AllocateNode::KlassNode);
a61af66fc99e Initial load
duke
parents:
diff changeset
1161 Node* initial_slow_test = alloc->in(AllocateNode::InitialTest);
a61af66fc99e Initial load
duke
parents:
diff changeset
1162
a61af66fc99e Initial load
duke
parents:
diff changeset
1163 assert(ctrl != NULL, "must have control");
a61af66fc99e Initial load
duke
parents:
diff changeset
1164 // We need a Region and corresponding Phi's to merge the slow-path and fast-path results.
a61af66fc99e Initial load
duke
parents:
diff changeset
1165 // they will not be used if "always_slow" is set
a61af66fc99e Initial load
duke
parents:
diff changeset
1166 enum { slow_result_path = 1, fast_result_path = 2 };
a61af66fc99e Initial load
duke
parents:
diff changeset
1167 Node *result_region;
a61af66fc99e Initial load
duke
parents:
diff changeset
1168 Node *result_phi_rawmem;
a61af66fc99e Initial load
duke
parents:
diff changeset
1169 Node *result_phi_rawoop;
a61af66fc99e Initial load
duke
parents:
diff changeset
1170 Node *result_phi_i_o;
a61af66fc99e Initial load
duke
parents:
diff changeset
1171
a61af66fc99e Initial load
duke
parents:
diff changeset
1172 // The initial slow comparison is a size check, the comparison
a61af66fc99e Initial load
duke
parents:
diff changeset
1173 // we want to do is a BoolTest::gt
a61af66fc99e Initial load
duke
parents:
diff changeset
1174 bool always_slow = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1175 int tv = _igvn.find_int_con(initial_slow_test, -1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1176 if (tv >= 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1177 always_slow = (tv == 1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1178 initial_slow_test = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1179 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1180 initial_slow_test = BoolNode::make_predicate(initial_slow_test, &_igvn);
a61af66fc99e Initial load
duke
parents:
diff changeset
1181 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1182
780
c96bf21b756f 6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents: 708
diff changeset
1183 if (C->env()->dtrace_alloc_probes() ||
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1184 !UseTLAB && (!Universe::heap()->supports_inline_contig_alloc() ||
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1185 (UseConcMarkSweepGC && CMSIncrementalMode))) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1186 // Force slow-path allocation
a61af66fc99e Initial load
duke
parents:
diff changeset
1187 always_slow = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1188 initial_slow_test = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1189 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1190
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1191
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1192 enum { too_big_or_final_path = 1, need_gc_path = 2 };
a61af66fc99e Initial load
duke
parents:
diff changeset
1193 Node *slow_region = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1194 Node *toobig_false = ctrl;
a61af66fc99e Initial load
duke
parents:
diff changeset
1195
a61af66fc99e Initial load
duke
parents:
diff changeset
1196 assert (initial_slow_test == NULL || !always_slow, "arguments must be consistent");
a61af66fc99e Initial load
duke
parents:
diff changeset
1197 // generate the initial test if necessary
a61af66fc99e Initial load
duke
parents:
diff changeset
1198 if (initial_slow_test != NULL ) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1199 slow_region = new (C) RegionNode(3);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1200
a61af66fc99e Initial load
duke
parents:
diff changeset
1201 // Now make the initial failure test. Usually a too-big test but
a61af66fc99e Initial load
duke
parents:
diff changeset
1202 // might be a TRUE for finalizers or a fancy class check for
a61af66fc99e Initial load
duke
parents:
diff changeset
1203 // newInstance0.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1204 IfNode *toobig_iff = new (C) IfNode(ctrl, initial_slow_test, PROB_MIN, COUNT_UNKNOWN);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1205 transform_later(toobig_iff);
a61af66fc99e Initial load
duke
parents:
diff changeset
1206 // Plug the failing-too-big test into the slow-path region
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1207 Node *toobig_true = new (C) IfTrueNode( toobig_iff );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1208 transform_later(toobig_true);
a61af66fc99e Initial load
duke
parents:
diff changeset
1209 slow_region ->init_req( too_big_or_final_path, toobig_true );
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1210 toobig_false = new (C) IfFalseNode( toobig_iff );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1211 transform_later(toobig_false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1212 } else { // No initial test, just fall into next case
a61af66fc99e Initial load
duke
parents:
diff changeset
1213 toobig_false = ctrl;
a61af66fc99e Initial load
duke
parents:
diff changeset
1214 debug_only(slow_region = NodeSentinel);
a61af66fc99e Initial load
duke
parents:
diff changeset
1215 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1216
a61af66fc99e Initial load
duke
parents:
diff changeset
1217 Node *slow_mem = mem; // save the current memory state for slow path
a61af66fc99e Initial load
duke
parents:
diff changeset
1218 // generate the fast allocation code unless we know that the initial test will always go slow
a61af66fc99e Initial load
duke
parents:
diff changeset
1219 if (!always_slow) {
565
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception
kvn
parents: 490
diff changeset
1220 // Fast path modifies only raw memory.
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception
kvn
parents: 490
diff changeset
1221 if (mem->is_MergeMem()) {
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception
kvn
parents: 490
diff changeset
1222 mem = mem->as_MergeMem()->memory_at(Compile::AliasIdxRaw);
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception
kvn
parents: 490
diff changeset
1223 }
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception
kvn
parents: 490
diff changeset
1224
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1225 Node* eden_top_adr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1226 Node* eden_end_adr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1227
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1228 set_eden_pointers(eden_top_adr, eden_end_adr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1229
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1230 // Load Eden::end. Loop invariant and hoisted.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1231 //
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1232 // Note: We set the control input on "eden_end" and "old_eden_top" when using
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1233 // a TLAB to work around a bug where these values were being moved across
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1234 // a safepoint. These are not oops, so they cannot be include in the oop
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1235 // map, but they can be changed by a GC. The proper way to fix this would
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1236 // be to set the raw memory state when generating a SafepointNode. However
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1237 // this will require extensive changes to the loop optimization in order to
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1238 // prevent a degradation of the optimization.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1239 // See comment in memnode.hpp, around line 227 in class LoadPNode.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1240 Node *eden_end = make_load(ctrl, mem, eden_end_adr, 0, TypeRawPtr::BOTTOM, T_ADDRESS);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents: 124
diff changeset
1241
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1242 // allocate the Region and Phi nodes for the result
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1243 result_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1244 result_phi_rawmem = new (C) PhiNode(result_region, Type::MEMORY, TypeRawPtr::BOTTOM);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1245 result_phi_rawoop = new (C) PhiNode(result_region, TypeRawPtr::BOTTOM);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1246 result_phi_i_o = new (C) PhiNode(result_region, Type::ABIO); // I/O is used for Prefetch
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1247
a61af66fc99e Initial load
duke
parents:
diff changeset
1248 // We need a Region for the loop-back contended case.
a61af66fc99e Initial load
duke
parents:
diff changeset
1249 enum { fall_in_path = 1, contended_loopback_path = 2 };
a61af66fc99e Initial load
duke
parents:
diff changeset
1250 Node *contended_region;
a61af66fc99e Initial load
duke
parents:
diff changeset
1251 Node *contended_phi_rawmem;
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1252 if (UseTLAB) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1253 contended_region = toobig_false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1254 contended_phi_rawmem = mem;
a61af66fc99e Initial load
duke
parents:
diff changeset
1255 } else {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1256 contended_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1257 contended_phi_rawmem = new (C) PhiNode(contended_region, Type::MEMORY, TypeRawPtr::BOTTOM);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1258 // Now handle the passing-too-big test. We fall into the contended
a61af66fc99e Initial load
duke
parents:
diff changeset
1259 // loop-back merge point.
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1260 contended_region ->init_req(fall_in_path, toobig_false);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1261 contended_phi_rawmem->init_req(fall_in_path, mem);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1262 transform_later(contended_region);
a61af66fc99e Initial load
duke
parents:
diff changeset
1263 transform_later(contended_phi_rawmem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1264 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1265
a61af66fc99e Initial load
duke
parents:
diff changeset
1266 // Load(-locked) the heap top.
a61af66fc99e Initial load
duke
parents:
diff changeset
1267 // See note above concerning the control input when using a TLAB
a61af66fc99e Initial load
duke
parents:
diff changeset
1268 Node *old_eden_top = UseTLAB
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1269 ? new (C) LoadPNode (ctrl, contended_phi_rawmem, eden_top_adr, TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM)
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1270 : new (C) LoadPLockedNode(contended_region, contended_phi_rawmem, eden_top_adr);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1271
a61af66fc99e Initial load
duke
parents:
diff changeset
1272 transform_later(old_eden_top);
a61af66fc99e Initial load
duke
parents:
diff changeset
1273 // Add to heap top to get a new heap top
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1274 Node *new_eden_top = new (C) AddPNode(top(), old_eden_top, size_in_bytes);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1275 transform_later(new_eden_top);
a61af66fc99e Initial load
duke
parents:
diff changeset
1276 // Check for needing a GC; compare against heap end
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1277 Node *needgc_cmp = new (C) CmpPNode(new_eden_top, eden_end);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1278 transform_later(needgc_cmp);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1279 Node *needgc_bol = new (C) BoolNode(needgc_cmp, BoolTest::ge);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1280 transform_later(needgc_bol);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1281 IfNode *needgc_iff = new (C) IfNode(contended_region, needgc_bol, PROB_UNLIKELY_MAG(4), COUNT_UNKNOWN);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1282 transform_later(needgc_iff);
a61af66fc99e Initial load
duke
parents:
diff changeset
1283
a61af66fc99e Initial load
duke
parents:
diff changeset
1284 // Plug the failing-heap-space-need-gc test into the slow-path region
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1285 Node *needgc_true = new (C) IfTrueNode(needgc_iff);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1286 transform_later(needgc_true);
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1287 if (initial_slow_test) {
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1288 slow_region->init_req(need_gc_path, needgc_true);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1289 // This completes all paths into the slow merge point
a61af66fc99e Initial load
duke
parents:
diff changeset
1290 transform_later(slow_region);
a61af66fc99e Initial load
duke
parents:
diff changeset
1291 } else { // No initial slow path needed!
a61af66fc99e Initial load
duke
parents:
diff changeset
1292 // Just fall from the need-GC path straight into the VM call.
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1293 slow_region = needgc_true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1294 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1295 // No need for a GC. Setup for the Store-Conditional
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1296 Node *needgc_false = new (C) IfFalseNode(needgc_iff);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1297 transform_later(needgc_false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1298
a61af66fc99e Initial load
duke
parents:
diff changeset
1299 // Grab regular I/O before optional prefetch may change it.
a61af66fc99e Initial load
duke
parents:
diff changeset
1300 // Slow-path does no I/O so just set it to the original I/O.
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1301 result_phi_i_o->init_req(slow_result_path, i_o);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1302
a61af66fc99e Initial load
duke
parents:
diff changeset
1303 i_o = prefetch_allocation(i_o, needgc_false, contended_phi_rawmem,
a61af66fc99e Initial load
duke
parents:
diff changeset
1304 old_eden_top, new_eden_top, length);
a61af66fc99e Initial load
duke
parents:
diff changeset
1305
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1306 // Name successful fast-path variables
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1307 Node* fast_oop = old_eden_top;
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1308 Node* fast_oop_ctrl;
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1309 Node* fast_oop_rawmem;
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1310
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1311 // Store (-conditional) the modified eden top back down.
a61af66fc99e Initial load
duke
parents:
diff changeset
1312 // StorePConditional produces flags for a test PLUS a modified raw
a61af66fc99e Initial load
duke
parents:
diff changeset
1313 // memory state.
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1314 if (UseTLAB) {
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1315 Node* store_eden_top =
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1316 new (C) StorePNode(needgc_false, contended_phi_rawmem, eden_top_adr,
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1317 TypeRawPtr::BOTTOM, new_eden_top);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1318 transform_later(store_eden_top);
a61af66fc99e Initial load
duke
parents:
diff changeset
1319 fast_oop_ctrl = needgc_false; // No contention, so this is the fast path
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1320 fast_oop_rawmem = store_eden_top;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1321 } else {
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1322 Node* store_eden_top =
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1323 new (C) StorePConditionalNode(needgc_false, contended_phi_rawmem, eden_top_adr,
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1324 new_eden_top, fast_oop/*old_eden_top*/);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1325 transform_later(store_eden_top);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1326 Node *contention_check = new (C) BoolNode(store_eden_top, BoolTest::ne);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1327 transform_later(contention_check);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1328 store_eden_top = new (C) SCMemProjNode(store_eden_top);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1329 transform_later(store_eden_top);
a61af66fc99e Initial load
duke
parents:
diff changeset
1330
a61af66fc99e Initial load
duke
parents:
diff changeset
1331 // If not using TLABs, check to see if there was contention.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1332 IfNode *contention_iff = new (C) IfNode (needgc_false, contention_check, PROB_MIN, COUNT_UNKNOWN);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1333 transform_later(contention_iff);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1334 Node *contention_true = new (C) IfTrueNode(contention_iff);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1335 transform_later(contention_true);
a61af66fc99e Initial load
duke
parents:
diff changeset
1336 // If contention, loopback and try again.
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1337 contended_region->init_req(contended_loopback_path, contention_true);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1338 contended_phi_rawmem->init_req(contended_loopback_path, store_eden_top);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1339
a61af66fc99e Initial load
duke
parents:
diff changeset
1340 // Fast-path succeeded with no contention!
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1341 Node *contention_false = new (C) IfFalseNode(contention_iff);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1342 transform_later(contention_false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1343 fast_oop_ctrl = contention_false;
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1344
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1345 // Bump total allocated bytes for this thread
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1346 Node* thread = new (C) ThreadLocalNode();
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1347 transform_later(thread);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1348 Node* alloc_bytes_adr = basic_plus_adr(top()/*not oop*/, thread,
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1349 in_bytes(JavaThread::allocated_bytes_offset()));
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1350 Node* alloc_bytes = make_load(fast_oop_ctrl, store_eden_top, alloc_bytes_adr,
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1351 0, TypeLong::LONG, T_LONG);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1352 #ifdef _LP64
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1353 Node* alloc_size = size_in_bytes;
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1354 #else
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1355 Node* alloc_size = new (C) ConvI2LNode(size_in_bytes);
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1356 transform_later(alloc_size);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1357 #endif
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1358 Node* new_alloc_bytes = new (C) AddLNode(alloc_bytes, alloc_size);
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1359 transform_later(new_alloc_bytes);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1360 fast_oop_rawmem = make_store(fast_oop_ctrl, store_eden_top, alloc_bytes_adr,
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1361 0, new_alloc_bytes, T_LONG);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1362 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1363
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1364 InitializeNode* init = alloc->initialization();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1365 fast_oop_rawmem = initialize_object(alloc,
a61af66fc99e Initial load
duke
parents:
diff changeset
1366 fast_oop_ctrl, fast_oop_rawmem, fast_oop,
a61af66fc99e Initial load
duke
parents:
diff changeset
1367 klass_node, length, size_in_bytes);
a61af66fc99e Initial load
duke
parents:
diff changeset
1368
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1369 // If initialization is performed by an array copy, any required
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1370 // MemBarStoreStore was already added. If the object does not
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1371 // escape no need for a MemBarStoreStore. Otherwise we need a
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1372 // MemBarStoreStore so that stores that initialize this object
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1373 // can't be reordered with a subsequent store that makes this
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1374 // object accessible by other threads.
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1375 if (init == NULL || (!init->is_complete_with_arraycopy() && !init->does_not_escape())) {
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1376 if (init == NULL || init->req() < InitializeNode::RawStores) {
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1377 // No InitializeNode or no stores captured by zeroing
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1378 // elimination. Simply add the MemBarStoreStore after object
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1379 // initialization.
8694
8651f608fea4 8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents: 7637
diff changeset
1380 MemBarNode* mb = MemBarNode::make(C, Op_MemBarStoreStore, Compile::AliasIdxBot);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1381 transform_later(mb);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1382
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1383 mb->init_req(TypeFunc::Memory, fast_oop_rawmem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1384 mb->init_req(TypeFunc::Control, fast_oop_ctrl);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1385 fast_oop_ctrl = new (C) ProjNode(mb,TypeFunc::Control);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1386 transform_later(fast_oop_ctrl);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1387 fast_oop_rawmem = new (C) ProjNode(mb,TypeFunc::Memory);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1388 transform_later(fast_oop_rawmem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1389 } else {
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1390 // Add the MemBarStoreStore after the InitializeNode so that
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1391 // all stores performing the initialization that were moved
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1392 // before the InitializeNode happen before the storestore
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1393 // barrier.
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1394
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1395 Node* init_ctrl = init->proj_out(TypeFunc::Control);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1396 Node* init_mem = init->proj_out(TypeFunc::Memory);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1397
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1398 MemBarNode* mb = MemBarNode::make(C, Op_MemBarStoreStore, Compile::AliasIdxBot);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1399 transform_later(mb);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1400
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1401 Node* ctrl = new (C) ProjNode(init,TypeFunc::Control);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1402 transform_later(ctrl);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1403 Node* mem = new (C) ProjNode(init,TypeFunc::Memory);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1404 transform_later(mem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1405
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1406 // The MemBarStoreStore depends on control and memory coming
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1407 // from the InitializeNode
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1408 mb->init_req(TypeFunc::Memory, mem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1409 mb->init_req(TypeFunc::Control, ctrl);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1410
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1411 ctrl = new (C) ProjNode(mb,TypeFunc::Control);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1412 transform_later(ctrl);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1413 mem = new (C) ProjNode(mb,TypeFunc::Memory);
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1414 transform_later(mem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1415
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1416 // All nodes that depended on the InitializeNode for control
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1417 // and memory must now depend on the MemBarNode that itself
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1418 // depends on the InitializeNode
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1419 _igvn.replace_node(init_ctrl, ctrl);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1420 _igvn.replace_node(init_mem, mem);
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1421 }
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1422 }
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4762
diff changeset
1423
780
c96bf21b756f 6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents: 708
diff changeset
1424 if (C->env()->dtrace_extended_probes()) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1425 // Slow-path call
a61af66fc99e Initial load
duke
parents:
diff changeset
1426 int size = TypeFunc::Parms + 2;
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1427 CallLeafNode *call = new (C) CallLeafNode(OptoRuntime::dtrace_object_alloc_Type(),
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1428 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc_base),
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1429 "dtrace_object_alloc",
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1430 TypeRawPtr::BOTTOM);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1431
a61af66fc99e Initial load
duke
parents:
diff changeset
1432 // Get base of thread-local storage area
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1433 Node* thread = new (C) ThreadLocalNode();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1434 transform_later(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1435
a61af66fc99e Initial load
duke
parents:
diff changeset
1436 call->init_req(TypeFunc::Parms+0, thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1437 call->init_req(TypeFunc::Parms+1, fast_oop);
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1438 call->init_req(TypeFunc::Control, fast_oop_ctrl);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1439 call->init_req(TypeFunc::I_O , top()); // does no i/o
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1440 call->init_req(TypeFunc::Memory , fast_oop_rawmem);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1441 call->init_req(TypeFunc::ReturnAdr, alloc->in(TypeFunc::ReturnAdr));
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1442 call->init_req(TypeFunc::FramePtr, alloc->in(TypeFunc::FramePtr));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1443 transform_later(call);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1444 fast_oop_ctrl = new (C) ProjNode(call,TypeFunc::Control);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1445 transform_later(fast_oop_ctrl);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1446 fast_oop_rawmem = new (C) ProjNode(call,TypeFunc::Memory);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1447 transform_later(fast_oop_rawmem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1448 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1449
a61af66fc99e Initial load
duke
parents:
diff changeset
1450 // Plug in the successful fast-path into the result merge point
2100
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1451 result_region ->init_req(fast_result_path, fast_oop_ctrl);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1452 result_phi_rawoop->init_req(fast_result_path, fast_oop);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1453 result_phi_i_o ->init_req(fast_result_path, i_o);
b1a2afa37ec4 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 1972
diff changeset
1454 result_phi_rawmem->init_req(fast_result_path, fast_oop_rawmem);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1455 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1456 slow_region = ctrl;
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1457 result_phi_i_o = i_o; // Rename it to use in the following code.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1458 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1459
a61af66fc99e Initial load
duke
parents:
diff changeset
1460 // Generate slow-path call
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1461 CallNode *call = new (C) CallStaticJavaNode(slow_call_type, slow_call_address,
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1462 OptoRuntime::stub_name(slow_call_address),
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1463 alloc->jvms()->bci(),
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1464 TypePtr::BOTTOM);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1465 call->init_req( TypeFunc::Control, slow_region );
a61af66fc99e Initial load
duke
parents:
diff changeset
1466 call->init_req( TypeFunc::I_O , top() ) ; // does no i/o
a61af66fc99e Initial load
duke
parents:
diff changeset
1467 call->init_req( TypeFunc::Memory , slow_mem ); // may gc ptrs
a61af66fc99e Initial load
duke
parents:
diff changeset
1468 call->init_req( TypeFunc::ReturnAdr, alloc->in(TypeFunc::ReturnAdr) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1469 call->init_req( TypeFunc::FramePtr, alloc->in(TypeFunc::FramePtr) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1470
a61af66fc99e Initial load
duke
parents:
diff changeset
1471 call->init_req(TypeFunc::Parms+0, klass_node);
a61af66fc99e Initial load
duke
parents:
diff changeset
1472 if (length != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1473 call->init_req(TypeFunc::Parms+1, length);
a61af66fc99e Initial load
duke
parents:
diff changeset
1474 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1475
a61af66fc99e Initial load
duke
parents:
diff changeset
1476 // Copy debug information and adjust JVMState information, then replace
a61af66fc99e Initial load
duke
parents:
diff changeset
1477 // allocate node with the call
a61af66fc99e Initial load
duke
parents:
diff changeset
1478 copy_call_debug_info((CallNode *) alloc, call);
a61af66fc99e Initial load
duke
parents:
diff changeset
1479 if (!always_slow) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1480 call->set_cnt(PROB_UNLIKELY_MAG(4)); // Same effect as RC_UNCOMMON.
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1481 } else {
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1482 // Hook i_o projection to avoid its elimination during allocation
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1483 // replacement (when only a slow call is generated).
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1484 call->set_req(TypeFunc::I_O, result_phi_i_o);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1485 }
1621
6027dddc26c6 6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()
kvn
parents: 1609
diff changeset
1486 _igvn.replace_node(alloc, call);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1487 transform_later(call);
a61af66fc99e Initial load
duke
parents:
diff changeset
1488
a61af66fc99e Initial load
duke
parents:
diff changeset
1489 // Identify the output projections from the allocate node and
a61af66fc99e Initial load
duke
parents:
diff changeset
1490 // adjust any references to them.
a61af66fc99e Initial load
duke
parents:
diff changeset
1491 // The control and io projections look like:
a61af66fc99e Initial load
duke
parents:
diff changeset
1492 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1493 // v---Proj(ctrl) <-----+ v---CatchProj(ctrl)
a61af66fc99e Initial load
duke
parents:
diff changeset
1494 // Allocate Catch
a61af66fc99e Initial load
duke
parents:
diff changeset
1495 // ^---Proj(io) <-------+ ^---CatchProj(io)
a61af66fc99e Initial load
duke
parents:
diff changeset
1496 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1497 // We are interested in the CatchProj nodes.
a61af66fc99e Initial load
duke
parents:
diff changeset
1498 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1499 extract_call_projections(call);
a61af66fc99e Initial load
duke
parents:
diff changeset
1500
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1501 // An allocate node has separate memory projections for the uses on
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1502 // the control and i_o paths. Replace the control memory projection with
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1503 // result_phi_rawmem (unless we are only generating a slow call when
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1504 // both memory projections are combined)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1505 if (!always_slow && _memproj_fallthrough != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1506 for (DUIterator_Fast imax, i = _memproj_fallthrough->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1507 Node *use = _memproj_fallthrough->fast_out(i);
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1508 _igvn.rehash_node_delayed(use);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1509 imax -= replace_input(use, _memproj_fallthrough, result_phi_rawmem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1510 // back up iterator
a61af66fc99e Initial load
duke
parents:
diff changeset
1511 --i;
a61af66fc99e Initial load
duke
parents:
diff changeset
1512 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1513 }
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1514 // Now change uses of _memproj_catchall to use _memproj_fallthrough and delete
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1515 // _memproj_catchall so we end up with a call that has only 1 memory projection.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1516 if (_memproj_catchall != NULL ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1517 if (_memproj_fallthrough == NULL) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1518 _memproj_fallthrough = new (C) ProjNode(call, TypeFunc::Memory);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1519 transform_later(_memproj_fallthrough);
a61af66fc99e Initial load
duke
parents:
diff changeset
1520 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1521 for (DUIterator_Fast imax, i = _memproj_catchall->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1522 Node *use = _memproj_catchall->fast_out(i);
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1523 _igvn.rehash_node_delayed(use);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1524 imax -= replace_input(use, _memproj_catchall, _memproj_fallthrough);
a61af66fc99e Initial load
duke
parents:
diff changeset
1525 // back up iterator
a61af66fc99e Initial load
duke
parents:
diff changeset
1526 --i;
a61af66fc99e Initial load
duke
parents:
diff changeset
1527 }
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1528 assert(_memproj_catchall->outcnt() == 0, "all uses must be deleted");
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1529 _igvn.remove_dead_node(_memproj_catchall);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1530 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1531
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1532 // An allocate node has separate i_o projections for the uses on the control
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1533 // and i_o paths. Always replace the control i_o projection with result i_o
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1534 // otherwise incoming i_o become dead when only a slow call is generated
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1535 // (it is different from memory projections where both projections are
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1536 // combined in such case).
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1537 if (_ioproj_fallthrough != NULL) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1538 for (DUIterator_Fast imax, i = _ioproj_fallthrough->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1539 Node *use = _ioproj_fallthrough->fast_out(i);
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1540 _igvn.rehash_node_delayed(use);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1541 imax -= replace_input(use, _ioproj_fallthrough, result_phi_i_o);
a61af66fc99e Initial load
duke
parents:
diff changeset
1542 // back up iterator
a61af66fc99e Initial load
duke
parents:
diff changeset
1543 --i;
a61af66fc99e Initial load
duke
parents:
diff changeset
1544 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1545 }
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1546 // Now change uses of _ioproj_catchall to use _ioproj_fallthrough and delete
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1547 // _ioproj_catchall so we end up with a call that has only 1 i_o projection.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1548 if (_ioproj_catchall != NULL ) {
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1549 if (_ioproj_fallthrough == NULL) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1550 _ioproj_fallthrough = new (C) ProjNode(call, TypeFunc::I_O);
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1551 transform_later(_ioproj_fallthrough);
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1552 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1553 for (DUIterator_Fast imax, i = _ioproj_catchall->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1554 Node *use = _ioproj_catchall->fast_out(i);
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1555 _igvn.rehash_node_delayed(use);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1556 imax -= replace_input(use, _ioproj_catchall, _ioproj_fallthrough);
a61af66fc99e Initial load
duke
parents:
diff changeset
1557 // back up iterator
a61af66fc99e Initial load
duke
parents:
diff changeset
1558 --i;
a61af66fc99e Initial load
duke
parents:
diff changeset
1559 }
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1560 assert(_ioproj_catchall->outcnt() == 0, "all uses must be deleted");
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1561 _igvn.remove_dead_node(_ioproj_catchall);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1562 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1563
a61af66fc99e Initial load
duke
parents:
diff changeset
1564 // if we generated only a slow call, we are done
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1565 if (always_slow) {
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1566 // Now we can unhook i_o.
4769
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1567 if (result_phi_i_o->outcnt() > 1) {
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1568 call->set_req(TypeFunc::I_O, top());
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1569 } else {
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1570 assert(result_phi_i_o->unique_ctrl_out() == call, "");
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1571 // Case of new array with negative size known during compilation.
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1572 // AllocateArrayNode::Ideal() optimization disconnect unreachable
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1573 // following code since call to runtime will throw exception.
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1574 // As result there will be no users of i_o after the call.
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1575 // Leave i_o attached to this call to avoid problems in preceding graph.
9c87bcb3b4dd 7125879: assert(proj != NULL) failed: must be found
kvn
parents: 4767
diff changeset
1576 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1577 return;
4767
d12a66fa3820 7123954: Some CTW test crash with SIGSEGV
kvn
parents: 4763
diff changeset
1578 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1579
a61af66fc99e Initial load
duke
parents:
diff changeset
1580
a61af66fc99e Initial load
duke
parents:
diff changeset
1581 if (_fallthroughcatchproj != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1582 ctrl = _fallthroughcatchproj->clone();
a61af66fc99e Initial load
duke
parents:
diff changeset
1583 transform_later(ctrl);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
1584 _igvn.replace_node(_fallthroughcatchproj, result_region);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1585 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1586 ctrl = top();
a61af66fc99e Initial load
duke
parents:
diff changeset
1587 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1588 Node *slow_result;
a61af66fc99e Initial load
duke
parents:
diff changeset
1589 if (_resproj == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1590 // no uses of the allocation result
a61af66fc99e Initial load
duke
parents:
diff changeset
1591 slow_result = top();
a61af66fc99e Initial load
duke
parents:
diff changeset
1592 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1593 slow_result = _resproj->clone();
a61af66fc99e Initial load
duke
parents:
diff changeset
1594 transform_later(slow_result);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
1595 _igvn.replace_node(_resproj, result_phi_rawoop);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1596 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1597
a61af66fc99e Initial load
duke
parents:
diff changeset
1598 // Plug slow-path into result merge point
a61af66fc99e Initial load
duke
parents:
diff changeset
1599 result_region ->init_req( slow_result_path, ctrl );
a61af66fc99e Initial load
duke
parents:
diff changeset
1600 result_phi_rawoop->init_req( slow_result_path, slow_result);
a61af66fc99e Initial load
duke
parents:
diff changeset
1601 result_phi_rawmem->init_req( slow_result_path, _memproj_fallthrough );
a61af66fc99e Initial load
duke
parents:
diff changeset
1602 transform_later(result_region);
a61af66fc99e Initial load
duke
parents:
diff changeset
1603 transform_later(result_phi_rawoop);
a61af66fc99e Initial load
duke
parents:
diff changeset
1604 transform_later(result_phi_rawmem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1605 transform_later(result_phi_i_o);
a61af66fc99e Initial load
duke
parents:
diff changeset
1606 // This completes all paths into the result merge point
a61af66fc99e Initial load
duke
parents:
diff changeset
1607 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1608
a61af66fc99e Initial load
duke
parents:
diff changeset
1609
a61af66fc99e Initial load
duke
parents:
diff changeset
1610 // Helper for PhaseMacroExpand::expand_allocate_common.
a61af66fc99e Initial load
duke
parents:
diff changeset
1611 // Initializes the newly-allocated storage.
a61af66fc99e Initial load
duke
parents:
diff changeset
1612 Node*
a61af66fc99e Initial load
duke
parents:
diff changeset
1613 PhaseMacroExpand::initialize_object(AllocateNode* alloc,
a61af66fc99e Initial load
duke
parents:
diff changeset
1614 Node* control, Node* rawmem, Node* object,
a61af66fc99e Initial load
duke
parents:
diff changeset
1615 Node* klass_node, Node* length,
a61af66fc99e Initial load
duke
parents:
diff changeset
1616 Node* size_in_bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1617 InitializeNode* init = alloc->initialization();
a61af66fc99e Initial load
duke
parents:
diff changeset
1618 // Store the klass & mark bits
a61af66fc99e Initial load
duke
parents:
diff changeset
1619 Node* mark_node = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1620 // For now only enable fast locking for non-array types
a61af66fc99e Initial load
duke
parents:
diff changeset
1621 if (UseBiasedLocking && (length == NULL)) {
4762
069ab3f976d3 7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
parents: 4115
diff changeset
1622 mark_node = make_load(control, rawmem, klass_node, in_bytes(Klass::prototype_header_offset()), TypeRawPtr::BOTTOM, T_ADDRESS);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1623 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1624 mark_node = makecon(TypeRawPtr::make((address)markOopDesc::prototype()));
a61af66fc99e Initial load
duke
parents:
diff changeset
1625 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1626 rawmem = make_store(control, rawmem, object, oopDesc::mark_offset_in_bytes(), mark_node, T_ADDRESS);
113
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
1627
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6197
diff changeset
1628 rawmem = make_store(control, rawmem, object, oopDesc::klass_offset_in_bytes(), klass_node, T_METADATA);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1629 int header_size = alloc->minimum_header_size(); // conservatively small
a61af66fc99e Initial load
duke
parents:
diff changeset
1630
a61af66fc99e Initial load
duke
parents:
diff changeset
1631 // Array length
a61af66fc99e Initial load
duke
parents:
diff changeset
1632 if (length != NULL) { // Arrays need length field
a61af66fc99e Initial load
duke
parents:
diff changeset
1633 rawmem = make_store(control, rawmem, object, arrayOopDesc::length_offset_in_bytes(), length, T_INT);
a61af66fc99e Initial load
duke
parents:
diff changeset
1634 // conservatively small header size:
113
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
1635 header_size = arrayOopDesc::base_offset_in_bytes(T_BYTE);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1636 ciKlass* k = _igvn.type(klass_node)->is_klassptr()->klass();
a61af66fc99e Initial load
duke
parents:
diff changeset
1637 if (k->is_array_klass()) // we know the exact header size in most cases:
a61af66fc99e Initial load
duke
parents:
diff changeset
1638 header_size = Klass::layout_helper_header_size(k->layout_helper());
a61af66fc99e Initial load
duke
parents:
diff changeset
1639 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1640
a61af66fc99e Initial load
duke
parents:
diff changeset
1641 // Clear the object body, if necessary.
a61af66fc99e Initial load
duke
parents:
diff changeset
1642 if (init == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1643 // The init has somehow disappeared; be cautious and clear everything.
a61af66fc99e Initial load
duke
parents:
diff changeset
1644 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1645 // This can happen if a node is allocated but an uncommon trap occurs
a61af66fc99e Initial load
duke
parents:
diff changeset
1646 // immediately. In this case, the Initialize gets associated with the
a61af66fc99e Initial load
duke
parents:
diff changeset
1647 // trap, and may be placed in a different (outer) loop, if the Allocate
a61af66fc99e Initial load
duke
parents:
diff changeset
1648 // is in a loop. If (this is rare) the inner loop gets unrolled, then
a61af66fc99e Initial load
duke
parents:
diff changeset
1649 // there can be two Allocates to one Initialize. The answer in all these
a61af66fc99e Initial load
duke
parents:
diff changeset
1650 // edge cases is safety first. It is always safe to clear immediately
a61af66fc99e Initial load
duke
parents:
diff changeset
1651 // within an Allocate, and then (maybe or maybe not) clear some more later.
a61af66fc99e Initial load
duke
parents:
diff changeset
1652 if (!ZeroTLAB)
a61af66fc99e Initial load
duke
parents:
diff changeset
1653 rawmem = ClearArrayNode::clear_memory(control, rawmem, object,
a61af66fc99e Initial load
duke
parents:
diff changeset
1654 header_size, size_in_bytes,
a61af66fc99e Initial load
duke
parents:
diff changeset
1655 &_igvn);
a61af66fc99e Initial load
duke
parents:
diff changeset
1656 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1657 if (!init->is_complete()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1658 // Try to win by zeroing only what the init does not store.
a61af66fc99e Initial load
duke
parents:
diff changeset
1659 // We can also try to do some peephole optimizations,
a61af66fc99e Initial load
duke
parents:
diff changeset
1660 // such as combining some adjacent subword stores.
a61af66fc99e Initial load
duke
parents:
diff changeset
1661 rawmem = init->complete_stores(control, rawmem, object,
a61af66fc99e Initial load
duke
parents:
diff changeset
1662 header_size, size_in_bytes, &_igvn);
a61af66fc99e Initial load
duke
parents:
diff changeset
1663 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1664 // We have no more use for this link, since the AllocateNode goes away:
a61af66fc99e Initial load
duke
parents:
diff changeset
1665 init->set_req(InitializeNode::RawAddress, top());
a61af66fc99e Initial load
duke
parents:
diff changeset
1666 // (If we keep the link, it just confuses the register allocator,
a61af66fc99e Initial load
duke
parents:
diff changeset
1667 // who thinks he sees a real use of the address by the membar.)
a61af66fc99e Initial load
duke
parents:
diff changeset
1668 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1669
a61af66fc99e Initial load
duke
parents:
diff changeset
1670 return rawmem;
a61af66fc99e Initial load
duke
parents:
diff changeset
1671 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1672
a61af66fc99e Initial load
duke
parents:
diff changeset
1673 // Generate prefetch instructions for next allocations.
a61af66fc99e Initial load
duke
parents:
diff changeset
1674 Node* PhaseMacroExpand::prefetch_allocation(Node* i_o, Node*& needgc_false,
a61af66fc99e Initial load
duke
parents:
diff changeset
1675 Node*& contended_phi_rawmem,
a61af66fc99e Initial load
duke
parents:
diff changeset
1676 Node* old_eden_top, Node* new_eden_top,
a61af66fc99e Initial load
duke
parents:
diff changeset
1677 Node* length) {
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1678 enum { fall_in_path = 1, pf_path = 2 };
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1679 if( UseTLAB && AllocatePrefetchStyle == 2 ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1680 // Generate prefetch allocation with watermark check.
a61af66fc99e Initial load
duke
parents:
diff changeset
1681 // As an allocation hits the watermark, we will prefetch starting
a61af66fc99e Initial load
duke
parents:
diff changeset
1682 // at a "distance" away from watermark.
a61af66fc99e Initial load
duke
parents:
diff changeset
1683
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1684 Node *pf_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1685 Node *pf_phi_rawmem = new (C) PhiNode( pf_region, Type::MEMORY,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1686 TypeRawPtr::BOTTOM );
a61af66fc99e Initial load
duke
parents:
diff changeset
1687 // I/O is used for Prefetch
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1688 Node *pf_phi_abio = new (C) PhiNode( pf_region, Type::ABIO );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1689
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1690 Node *thread = new (C) ThreadLocalNode();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1691 transform_later(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1692
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1693 Node *eden_pf_adr = new (C) AddPNode( top()/*not oop*/, thread,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1694 _igvn.MakeConX(in_bytes(JavaThread::tlab_pf_top_offset())) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1695 transform_later(eden_pf_adr);
a61af66fc99e Initial load
duke
parents:
diff changeset
1696
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1697 Node *old_pf_wm = new (C) LoadPNode( needgc_false,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1698 contended_phi_rawmem, eden_pf_adr,
a61af66fc99e Initial load
duke
parents:
diff changeset
1699 TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM );
a61af66fc99e Initial load
duke
parents:
diff changeset
1700 transform_later(old_pf_wm);
a61af66fc99e Initial load
duke
parents:
diff changeset
1701
a61af66fc99e Initial load
duke
parents:
diff changeset
1702 // check against new_eden_top
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1703 Node *need_pf_cmp = new (C) CmpPNode( new_eden_top, old_pf_wm );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1704 transform_later(need_pf_cmp);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1705 Node *need_pf_bol = new (C) BoolNode( need_pf_cmp, BoolTest::ge );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1706 transform_later(need_pf_bol);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1707 IfNode *need_pf_iff = new (C) IfNode( needgc_false, need_pf_bol,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1708 PROB_UNLIKELY_MAG(4), COUNT_UNKNOWN );
a61af66fc99e Initial load
duke
parents:
diff changeset
1709 transform_later(need_pf_iff);
a61af66fc99e Initial load
duke
parents:
diff changeset
1710
a61af66fc99e Initial load
duke
parents:
diff changeset
1711 // true node, add prefetchdistance
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1712 Node *need_pf_true = new (C) IfTrueNode( need_pf_iff );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1713 transform_later(need_pf_true);
a61af66fc99e Initial load
duke
parents:
diff changeset
1714
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1715 Node *need_pf_false = new (C) IfFalseNode( need_pf_iff );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1716 transform_later(need_pf_false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1717
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1718 Node *new_pf_wmt = new (C) AddPNode( top(), old_pf_wm,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1719 _igvn.MakeConX(AllocatePrefetchDistance) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1720 transform_later(new_pf_wmt );
a61af66fc99e Initial load
duke
parents:
diff changeset
1721 new_pf_wmt->set_req(0, need_pf_true);
a61af66fc99e Initial load
duke
parents:
diff changeset
1722
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1723 Node *store_new_wmt = new (C) StorePNode( need_pf_true,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1724 contended_phi_rawmem, eden_pf_adr,
a61af66fc99e Initial load
duke
parents:
diff changeset
1725 TypeRawPtr::BOTTOM, new_pf_wmt );
a61af66fc99e Initial load
duke
parents:
diff changeset
1726 transform_later(store_new_wmt);
a61af66fc99e Initial load
duke
parents:
diff changeset
1727
a61af66fc99e Initial load
duke
parents:
diff changeset
1728 // adding prefetches
a61af66fc99e Initial load
duke
parents:
diff changeset
1729 pf_phi_abio->init_req( fall_in_path, i_o );
a61af66fc99e Initial load
duke
parents:
diff changeset
1730
a61af66fc99e Initial load
duke
parents:
diff changeset
1731 Node *prefetch_adr;
a61af66fc99e Initial load
duke
parents:
diff changeset
1732 Node *prefetch;
a61af66fc99e Initial load
duke
parents:
diff changeset
1733 uint lines = AllocatePrefetchDistance / AllocatePrefetchStepSize;
a61af66fc99e Initial load
duke
parents:
diff changeset
1734 uint step_size = AllocatePrefetchStepSize;
a61af66fc99e Initial load
duke
parents:
diff changeset
1735 uint distance = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
1736
a61af66fc99e Initial load
duke
parents:
diff changeset
1737 for ( uint i = 0; i < lines; i++ ) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1738 prefetch_adr = new (C) AddPNode( old_pf_wm, new_pf_wmt,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1739 _igvn.MakeConX(distance) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1740 transform_later(prefetch_adr);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1741 prefetch = new (C) PrefetchAllocationNode( i_o, prefetch_adr );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1742 transform_later(prefetch);
a61af66fc99e Initial load
duke
parents:
diff changeset
1743 distance += step_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
1744 i_o = prefetch;
a61af66fc99e Initial load
duke
parents:
diff changeset
1745 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1746 pf_phi_abio->set_req( pf_path, i_o );
a61af66fc99e Initial load
duke
parents:
diff changeset
1747
a61af66fc99e Initial load
duke
parents:
diff changeset
1748 pf_region->init_req( fall_in_path, need_pf_false );
a61af66fc99e Initial load
duke
parents:
diff changeset
1749 pf_region->init_req( pf_path, need_pf_true );
a61af66fc99e Initial load
duke
parents:
diff changeset
1750
a61af66fc99e Initial load
duke
parents:
diff changeset
1751 pf_phi_rawmem->init_req( fall_in_path, contended_phi_rawmem );
a61af66fc99e Initial load
duke
parents:
diff changeset
1752 pf_phi_rawmem->init_req( pf_path, store_new_wmt );
a61af66fc99e Initial load
duke
parents:
diff changeset
1753
a61af66fc99e Initial load
duke
parents:
diff changeset
1754 transform_later(pf_region);
a61af66fc99e Initial load
duke
parents:
diff changeset
1755 transform_later(pf_phi_rawmem);
a61af66fc99e Initial load
duke
parents:
diff changeset
1756 transform_later(pf_phi_abio);
a61af66fc99e Initial load
duke
parents:
diff changeset
1757
a61af66fc99e Initial load
duke
parents:
diff changeset
1758 needgc_false = pf_region;
a61af66fc99e Initial load
duke
parents:
diff changeset
1759 contended_phi_rawmem = pf_phi_rawmem;
a61af66fc99e Initial load
duke
parents:
diff changeset
1760 i_o = pf_phi_abio;
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1761 } else if( UseTLAB && AllocatePrefetchStyle == 3 ) {
3854
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1762 // Insert a prefetch for each allocation.
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1763 // This code is used for Sparc with BIS.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1764 Node *pf_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1765 Node *pf_phi_rawmem = new (C) PhiNode( pf_region, Type::MEMORY,
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1766 TypeRawPtr::BOTTOM );
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1767
3854
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1768 // Generate several prefetch instructions.
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1769 uint lines = (length != NULL) ? AllocatePrefetchLines : AllocateInstancePrefetchLines;
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1770 uint step_size = AllocatePrefetchStepSize;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1771 uint distance = AllocatePrefetchDistance;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1772
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1773 // Next cache address.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1774 Node *cache_adr = new (C) AddPNode(old_eden_top, old_eden_top,
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1775 _igvn.MakeConX(distance));
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1776 transform_later(cache_adr);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1777 cache_adr = new (C) CastP2XNode(needgc_false, cache_adr);
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1778 transform_later(cache_adr);
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1779 Node* mask = _igvn.MakeConX(~(intptr_t)(step_size-1));
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1780 cache_adr = new (C) AndXNode(cache_adr, mask);
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1781 transform_later(cache_adr);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1782 cache_adr = new (C) CastX2PNode(cache_adr);
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1783 transform_later(cache_adr);
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1784
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1785 // Prefetch
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1786 Node *prefetch = new (C) PrefetchAllocationNode( contended_phi_rawmem, cache_adr );
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1787 prefetch->set_req(0, needgc_false);
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1788 transform_later(prefetch);
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1789 contended_phi_rawmem = prefetch;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1790 Node *prefetch_adr;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1791 distance = step_size;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1792 for ( uint i = 1; i < lines; i++ ) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1793 prefetch_adr = new (C) AddPNode( cache_adr, cache_adr,
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1794 _igvn.MakeConX(distance) );
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1795 transform_later(prefetch_adr);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1796 prefetch = new (C) PrefetchAllocationNode( contended_phi_rawmem, prefetch_adr );
1367
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1797 transform_later(prefetch);
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1798 distance += step_size;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1799 contended_phi_rawmem = prefetch;
9e321dcfa5b7 6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents: 1100
diff changeset
1800 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1801 } else if( AllocatePrefetchStyle > 0 ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1802 // Insert a prefetch for each allocation only on the fast-path
a61af66fc99e Initial load
duke
parents:
diff changeset
1803 Node *prefetch_adr;
a61af66fc99e Initial load
duke
parents:
diff changeset
1804 Node *prefetch;
3854
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1805 // Generate several prefetch instructions.
1af104d6cf99 7079329: Adjust allocation prefetching for T4
kvn
parents: 3849
diff changeset
1806 uint lines = (length != NULL) ? AllocatePrefetchLines : AllocateInstancePrefetchLines;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1807 uint step_size = AllocatePrefetchStepSize;
a61af66fc99e Initial load
duke
parents:
diff changeset
1808 uint distance = AllocatePrefetchDistance;
a61af66fc99e Initial load
duke
parents:
diff changeset
1809 for ( uint i = 0; i < lines; i++ ) {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1810 prefetch_adr = new (C) AddPNode( old_eden_top, new_eden_top,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1811 _igvn.MakeConX(distance) );
a61af66fc99e Initial load
duke
parents:
diff changeset
1812 transform_later(prefetch_adr);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
1813 prefetch = new (C) PrefetchAllocationNode( i_o, prefetch_adr );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1814 // Do not let it float too high, since if eden_top == eden_end,
a61af66fc99e Initial load
duke
parents:
diff changeset
1815 // both might be null.
a61af66fc99e Initial load
duke
parents:
diff changeset
1816 if( i == 0 ) { // Set control for first prefetch, next follows it
a61af66fc99e Initial load
duke
parents:
diff changeset
1817 prefetch->init_req(0, needgc_false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1818 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1819 transform_later(prefetch);
a61af66fc99e Initial load
duke
parents:
diff changeset
1820 distance += step_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
1821 i_o = prefetch;
a61af66fc99e Initial load
duke
parents:
diff changeset
1822 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1823 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1824 return i_o;
a61af66fc99e Initial load
duke
parents:
diff changeset
1825 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1826
a61af66fc99e Initial load
duke
parents:
diff changeset
1827
a61af66fc99e Initial load
duke
parents:
diff changeset
1828 void PhaseMacroExpand::expand_allocate(AllocateNode *alloc) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1829 expand_allocate_common(alloc, NULL,
a61af66fc99e Initial load
duke
parents:
diff changeset
1830 OptoRuntime::new_instance_Type(),
a61af66fc99e Initial load
duke
parents:
diff changeset
1831 OptoRuntime::new_instance_Java());
a61af66fc99e Initial load
duke
parents:
diff changeset
1832 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1833
a61af66fc99e Initial load
duke
parents:
diff changeset
1834 void PhaseMacroExpand::expand_allocate_array(AllocateArrayNode *alloc) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1835 Node* length = alloc->in(AllocateNode::ALength);
3961
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1836 InitializeNode* init = alloc->initialization();
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1837 Node* klass_node = alloc->in(AllocateNode::KlassNode);
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1838 ciKlass* k = _igvn.type(klass_node)->is_klassptr()->klass();
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1839 address slow_call_address; // Address of slow call
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1840 if (init != NULL && init->is_complete_with_arraycopy() &&
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1841 k->is_type_array_klass()) {
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1842 // Don't zero type array during slow allocation in VM since
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1843 // it will be initialized later by arraycopy in compiled code.
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1844 slow_call_address = OptoRuntime::new_array_nozero_Java();
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1845 } else {
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1846 slow_call_address = OptoRuntime::new_array_Java();
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1847 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1848 expand_allocate_common(alloc, length,
a61af66fc99e Initial load
duke
parents:
diff changeset
1849 OptoRuntime::new_array_Type(),
3961
a92cdbac8b9e 7081933: Use zeroing elimination optimization for large array
kvn
parents: 3854
diff changeset
1850 slow_call_address);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1851 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1852
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1853 //-------------------mark_eliminated_box----------------------------------
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1854 //
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1855 // During EA obj may point to several objects but after few ideal graph
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1856 // transformations (CCP) it may point to only one non escaping object
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1857 // (but still using phi), corresponding locks and unlocks will be marked
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1858 // for elimination. Later obj could be replaced with a new node (new phi)
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1859 // and which does not have escape information. And later after some graph
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1860 // reshape other locks and unlocks (which were not marked for elimination
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1861 // before) are connected to this new obj (phi) but they still will not be
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1862 // marked for elimination since new obj has no escape information.
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1863 // Mark all associated (same box and obj) lock and unlock nodes for
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1864 // elimination if some of them marked already.
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1865 void PhaseMacroExpand::mark_eliminated_box(Node* oldbox, Node* obj) {
4792
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1866 if (oldbox->as_BoxLock()->is_eliminated())
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1867 return; // This BoxLock node was processed already.
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1868
4792
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1869 // New implementation (EliminateNestedLocks) has separate BoxLock
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1870 // node for each locked region so mark all associated locks/unlocks as
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1871 // eliminated even if different objects are referenced in one locked region
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1872 // (for example, OSR compilation of nested loop inside locked scope).
89d0a5d40008 7129618: assert(obj_node->eqv_uncast(obj),"");
kvn
parents: 4790
diff changeset
1873 if (EliminateNestedLocks ||
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1874 oldbox->as_BoxLock()->is_simple_lock_region(NULL, obj)) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1875 // Box is used only in one lock region. Mark this box as eliminated.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1876 _igvn.hash_delete(oldbox);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1877 oldbox->as_BoxLock()->set_eliminated(); // This changes box's hash value
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1878 _igvn.hash_insert(oldbox);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1879
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1880 for (uint i = 0; i < oldbox->outcnt(); i++) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1881 Node* u = oldbox->raw_out(i);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1882 if (u->is_AbstractLock() && !u->as_AbstractLock()->is_non_esc_obj()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1883 AbstractLockNode* alock = u->as_AbstractLock();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1884 // Check lock's box since box could be referenced by Lock's debug info.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1885 if (alock->box_node() == oldbox) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1886 // Mark eliminated all related locks and unlocks.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1887 alock->set_non_esc_obj();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1888 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1889 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1890 }
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1891 return;
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
1892 }
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1893
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1894 // Create new "eliminated" BoxLock node and use it in monitor debug info
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1895 // instead of oldbox for the same object.
4790
b0ff910edfc9 7128355: assert(!nocreate) failed: Cannot build a phi for a block already parsed
kvn
parents: 4778
diff changeset
1896 BoxLockNode* newbox = oldbox->clone()->as_BoxLock();
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1897
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1898 // Note: BoxLock node is marked eliminated only here and it is used
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1899 // to indicate that all associated lock and unlock nodes are marked
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1900 // for elimination.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1901 newbox->set_eliminated();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1902 transform_later(newbox);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1903
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1904 // Replace old box node with new box for all users of the same object.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1905 for (uint i = 0; i < oldbox->outcnt();) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1906 bool next_edge = true;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1907
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1908 Node* u = oldbox->raw_out(i);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1909 if (u->is_AbstractLock()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1910 AbstractLockNode* alock = u->as_AbstractLock();
4778
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1911 if (alock->box_node() == oldbox && alock->obj_node()->eqv_uncast(obj)) {
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1912 // Replace Box and mark eliminated all related locks and unlocks.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1913 alock->set_non_esc_obj();
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1914 _igvn.rehash_node_delayed(alock);
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1915 alock->set_box_node(newbox);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1916 next_edge = false;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1917 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1918 }
4778
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1919 if (u->is_FastLock() && u->as_FastLock()->obj_node()->eqv_uncast(obj)) {
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1920 FastLockNode* flock = u->as_FastLock();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1921 assert(flock->box_node() == oldbox, "sanity");
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1922 _igvn.rehash_node_delayed(flock);
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1923 flock->set_box_node(newbox);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1924 next_edge = false;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1925 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1926
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1927 // Replace old box in monitor debug info.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1928 if (u->is_SafePoint() && u->as_SafePoint()->jvms()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1929 SafePointNode* sfn = u->as_SafePoint();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1930 JVMState* youngest_jvms = sfn->jvms();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1931 int max_depth = youngest_jvms->depth();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1932 for (int depth = 1; depth <= max_depth; depth++) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1933 JVMState* jvms = youngest_jvms->of_depth(depth);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1934 int num_mon = jvms->nof_monitors();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1935 // Loop over monitors
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1936 for (int idx = 0; idx < num_mon; idx++) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1937 Node* obj_node = sfn->monitor_obj(jvms, idx);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1938 Node* box_node = sfn->monitor_box(jvms, idx);
4778
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1939 if (box_node == oldbox && obj_node->eqv_uncast(obj)) {
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1940 int j = jvms->monitor_box_offset(idx);
6144
5e990493719e 7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
kvn
parents: 4894
diff changeset
1941 _igvn.replace_input_of(u, j, newbox);
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1942 next_edge = false;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1943 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1944 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1945 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1946 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1947 if (next_edge) i++;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1948 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1949 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1950
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1951 //-----------------------mark_eliminated_locking_nodes-----------------------
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1952 void PhaseMacroExpand::mark_eliminated_locking_nodes(AbstractLockNode *alock) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1953 if (EliminateNestedLocks) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1954 if (alock->is_nested()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1955 assert(alock->box_node()->as_BoxLock()->is_eliminated(), "sanity");
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1956 return;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1957 } else if (!alock->is_non_esc_obj()) { // Not eliminated or coarsened
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1958 // Only Lock node has JVMState needed here.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1959 if (alock->jvms() != NULL && alock->as_Lock()->is_nested_lock_region()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1960 // Mark eliminated related nested locks and unlocks.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1961 Node* obj = alock->obj_node();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1962 BoxLockNode* box_node = alock->box_node()->as_BoxLock();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1963 assert(!box_node->is_eliminated(), "should not be marked yet");
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1964 // Note: BoxLock node is marked eliminated only here
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1965 // and it is used to indicate that all associated lock
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
1966 // and unlock nodes are marked for elimination.
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1967 box_node->set_eliminated(); // Box's hash is always NO_HASH here
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1968 for (uint i = 0; i < box_node->outcnt(); i++) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1969 Node* u = box_node->raw_out(i);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1970 if (u->is_AbstractLock()) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1971 alock = u->as_AbstractLock();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1972 if (alock->box_node() == box_node) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1973 // Verify that this Box is referenced only by related locks.
4778
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1974 assert(alock->obj_node()->eqv_uncast(obj), "");
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1975 // Mark all related locks and unlocks.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1976 alock->set_nested();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1977 }
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
1978 }
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1979 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1980 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1981 return;
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1982 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1983 // Process locks for non escaping object
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1984 assert(alock->is_non_esc_obj(), "");
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1985 } // EliminateNestedLocks
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1986
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1987 if (alock->is_non_esc_obj()) { // Lock is used for non escaping object
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1988 // Look for all locks of this object and mark them and
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1989 // corresponding BoxLock nodes as eliminated.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1990 Node* obj = alock->obj_node();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1991 for (uint j = 0; j < obj->outcnt(); j++) {
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1992 Node* o = obj->raw_out(j);
4778
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1993 if (o->is_AbstractLock() &&
35acf8f0a2e4 7128352: assert(obj_node == obj) failed
kvn
parents: 4777
diff changeset
1994 o->as_AbstractLock()->obj_node()->eqv_uncast(obj)) {
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1995 alock = o->as_AbstractLock();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1996 Node* box = alock->box_node();
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1997 // Replace old box node with new eliminated box for all users
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1998 // of the same object and mark related locks as eliminated.
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
1999 mark_eliminated_box(box, obj);
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2000 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2001 }
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2002 }
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2003 }
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2004
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2005 // we have determined that this lock/unlock can be eliminated, we simply
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2006 // eliminate the node without expanding it.
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2007 //
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2008 // Note: The membar's associated with the lock/unlock are currently not
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2009 // eliminated. This should be investigated as a future enhancement.
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2010 //
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2011 bool PhaseMacroExpand::eliminate_locking_node(AbstractLockNode *alock) {
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2012
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2013 if (!alock->is_eliminated()) {
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2014 return false;
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2015 }
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2016 #ifdef ASSERT
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2017 if (!alock->is_coarsened()) {
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2018 // Check that new "eliminated" BoxLock node is created.
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2019 BoxLockNode* oldbox = alock->box_node()->as_BoxLock();
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2020 assert(oldbox->is_eliminated(), "should be done already");
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2021 }
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2022 #endif
1080
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2023 CompileLog* log = C->log();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2024 if (log != NULL) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2025 log->head("eliminate_lock lock='%d'",
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2026 alock->is_Lock());
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2027 JVMState* p = alock->jvms();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2028 while (p != NULL) {
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2029 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method()));
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2030 p = p->caller();
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2031 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2032 log->tail("eliminate_lock");
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2033 }
7c57aead6d3e 6892658: C2 should optimize some stringbuilder patterns
never
parents: 851
diff changeset
2034
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2035 #ifndef PRODUCT
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2036 if (PrintEliminateLocks) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2037 if (alock->is_Lock()) {
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2038 tty->print_cr("++++ Eliminated: %d Lock", alock->_idx);
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2039 } else {
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2040 tty->print_cr("++++ Eliminated: %d Unlock", alock->_idx);
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2041 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2042 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2043 #endif
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2044
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2045 Node* mem = alock->in(TypeFunc::Memory);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2046 Node* ctrl = alock->in(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2047
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2048 extract_call_projections(alock);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2049 // There are 2 projections from the lock. The lock node will
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2050 // be deleted when its last use is subsumed below.
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2051 assert(alock->outcnt() == 2 &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2052 _fallthroughproj != NULL &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2053 _memproj_fallthrough != NULL,
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2054 "Unexpected projections from Lock/Unlock");
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2055
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2056 Node* fallthroughproj = _fallthroughproj;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2057 Node* memproj_fallthrough = _memproj_fallthrough;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2058
a61af66fc99e Initial load
duke
parents:
diff changeset
2059 // The memory projection from a lock/unlock is RawMem
a61af66fc99e Initial load
duke
parents:
diff changeset
2060 // The input to a Lock is merged memory, so extract its RawMem input
a61af66fc99e Initial load
duke
parents:
diff changeset
2061 // (unless the MergeMem has been optimized away.)
a61af66fc99e Initial load
duke
parents:
diff changeset
2062 if (alock->is_Lock()) {
3849
f1c12354c3f7 7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths
roland
parents: 3788
diff changeset
2063 // Seach for MemBarAcquireLock node and delete it also.
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2064 MemBarNode* membar = fallthroughproj->unique_ctrl_out()->as_MemBar();
3849
f1c12354c3f7 7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths
roland
parents: 3788
diff changeset
2065 assert(membar != NULL && membar->Opcode() == Op_MemBarAcquireLock, "");
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2066 Node* ctrlproj = membar->proj_out(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2067 Node* memproj = membar->proj_out(TypeFunc::Memory);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2068 _igvn.replace_node(ctrlproj, fallthroughproj);
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2069 _igvn.replace_node(memproj, memproj_fallthrough);
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2070
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2071 // Delete FastLock node also if this Lock node is unique user
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2072 // (a loop peeling may clone a Lock node).
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2073 Node* flock = alock->as_Lock()->fastlock_node();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2074 if (flock->outcnt() == 1) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2075 assert(flock->unique_out() == alock, "sanity");
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2076 _igvn.replace_node(flock, top());
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2077 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2078 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2079
3849
f1c12354c3f7 7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths
roland
parents: 3788
diff changeset
2080 // Seach for MemBarReleaseLock node and delete it also.
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2081 if (alock->is_Unlock() && ctrl != NULL && ctrl->is_Proj() &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2082 ctrl->in(0)->is_MemBar()) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2083 MemBarNode* membar = ctrl->in(0)->as_MemBar();
3849
f1c12354c3f7 7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths
roland
parents: 3788
diff changeset
2084 assert(membar->Opcode() == Op_MemBarReleaseLock &&
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2085 mem->is_Proj() && membar == mem->in(0), "");
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2086 _igvn.replace_node(fallthroughproj, ctrl);
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2087 _igvn.replace_node(memproj_fallthrough, mem);
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2088 fallthroughproj = ctrl;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2089 memproj_fallthrough = mem;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2090 ctrl = membar->in(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2091 mem = membar->in(TypeFunc::Memory);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2092 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2093
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2094 _igvn.replace_node(fallthroughproj, ctrl);
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2095 _igvn.replace_node(memproj_fallthrough, mem);
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2096 return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2097 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2098
a61af66fc99e Initial load
duke
parents:
diff changeset
2099
a61af66fc99e Initial load
duke
parents:
diff changeset
2100 //------------------------------expand_lock_node----------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
2101 void PhaseMacroExpand::expand_lock_node(LockNode *lock) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2102
a61af66fc99e Initial load
duke
parents:
diff changeset
2103 Node* ctrl = lock->in(TypeFunc::Control);
a61af66fc99e Initial load
duke
parents:
diff changeset
2104 Node* mem = lock->in(TypeFunc::Memory);
a61af66fc99e Initial load
duke
parents:
diff changeset
2105 Node* obj = lock->obj_node();
a61af66fc99e Initial load
duke
parents:
diff changeset
2106 Node* box = lock->box_node();
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2107 Node* flock = lock->fastlock_node();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2108
4790
b0ff910edfc9 7128355: assert(!nocreate) failed: Cannot build a phi for a block already parsed
kvn
parents: 4778
diff changeset
2109 assert(!box->as_BoxLock()->is_eliminated(), "sanity");
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2110
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2111 // Make the merge point
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2112 Node *region;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2113 Node *mem_phi;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2114 Node *slow_path;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2115
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2116 if (UseOptoBiasInlining) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2117 /*
605
98cb887364d3 6810672: Comment typos
twisti
parents: 601
diff changeset
2118 * See the full description in MacroAssembler::biased_locking_enter().
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2119 *
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2120 * if( (mark_word & biased_lock_mask) == biased_lock_pattern ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2121 * // The object is biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2122 * proto_node = klass->prototype_header;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2123 * o_node = thread | proto_node;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2124 * x_node = o_node ^ mark_word;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2125 * if( (x_node & ~age_mask) == 0 ) { // Biased to the current thread ?
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2126 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2127 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2128 * if( (x_node & biased_lock_mask) != 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2129 * // The klass's prototype header is no longer biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2130 * cas(&mark_word, mark_word, proto_node)
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2131 * goto cas_lock;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2132 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2133 * // The klass's prototype header is still biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2134 * if( (x_node & epoch_mask) != 0 ) { // Expired epoch?
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2135 * old = mark_word;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2136 * new = o_node;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2137 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2138 * // Different thread or anonymous biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2139 * old = mark_word & (epoch_mask | age_mask | biased_lock_mask);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2140 * new = thread | old;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2141 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2142 * // Try to rebias.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2143 * if( cas(&mark_word, old, new) == 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2144 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2145 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2146 * goto slow_path; // Failed.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2147 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2148 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2149 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2150 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2151 * // The object is not biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2152 * cas_lock:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2153 * if( FastLock(obj) == 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2154 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2155 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2156 * slow_path:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2157 * OptoRuntime::complete_monitor_locking_Java(obj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2158 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2159 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2160 */
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2161
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2162 region = new (C) RegionNode(5);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2163 // create a Phi for the memory state
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2164 mem_phi = new (C) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2165
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2166 Node* fast_lock_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2167 Node* fast_lock_mem_phi = new (C) PhiNode( fast_lock_region, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2168
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2169 // First, check mark word for the biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2170 Node* mark_node = make_load(ctrl, mem, obj, oopDesc::mark_offset_in_bytes(), TypeX_X, TypeX_X->basic_type());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2171
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2172 // Get fast path - mark word has the biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2173 ctrl = opt_bits_test(ctrl, fast_lock_region, 1, mark_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2174 markOopDesc::biased_lock_mask_in_place,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2175 markOopDesc::biased_lock_pattern, true);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2176 // fast_lock_region->in(1) is set to slow path.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2177 fast_lock_mem_phi->init_req(1, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2178
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2179 // Now check that the lock is biased to the current thread and has
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2180 // the same epoch and bias as Klass::_prototype_header.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2181
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2182 // Special-case a fresh allocation to avoid building nodes:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2183 Node* klass_node = AllocateNode::Ideal_klass(obj, &_igvn);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2184 if (klass_node == NULL) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2185 Node* k_adr = basic_plus_adr(obj, oopDesc::klass_offset_in_bytes());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2186 klass_node = transform_later( LoadKlassNode::make(_igvn, mem, k_adr, _igvn.type(k_adr)->is_ptr()) );
490
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2187 #ifdef _LP64
6848
8e47bac5643a 7054512: Compress class pointers after perm gen removal
roland
parents: 6804
diff changeset
2188 if (UseCompressedKlassPointers && klass_node->is_DecodeNKlass()) {
490
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2189 assert(klass_node->in(1)->Opcode() == Op_LoadNKlass, "sanity");
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2190 klass_node->in(1)->init_req(0, ctrl);
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2191 } else
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2192 #endif
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code"
kvn
parents: 460
diff changeset
2193 klass_node->init_req(0, ctrl);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2194 }
4762
069ab3f976d3 7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
parents: 4115
diff changeset
2195 Node *proto_node = make_load(ctrl, mem, klass_node, in_bytes(Klass::prototype_header_offset()), TypeX_X, TypeX_X->basic_type());
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2196
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2197 Node* thread = transform_later(new (C) ThreadLocalNode());
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2198 Node* cast_thread = transform_later(new (C) CastP2XNode(ctrl, thread));
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2199 Node* o_node = transform_later(new (C) OrXNode(cast_thread, proto_node));
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2200 Node* x_node = transform_later(new (C) XorXNode(o_node, mark_node));
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2201
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2202 // Get slow path - mark word does NOT match the value.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2203 Node* not_biased_ctrl = opt_bits_test(ctrl, region, 3, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2204 (~markOopDesc::age_mask_in_place), 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2205 // region->in(3) is set to fast path - the object is biased to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2206 mem_phi->init_req(3, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2207
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2208
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2209 // Mark word does NOT match the value (thread | Klass::_prototype_header).
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2210
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2211
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2212 // First, check biased pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2213 // Get fast path - _prototype_header has the same biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2214 ctrl = opt_bits_test(not_biased_ctrl, fast_lock_region, 2, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2215 markOopDesc::biased_lock_mask_in_place, 0, true);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2216
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2217 not_biased_ctrl = fast_lock_region->in(2); // Slow path
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2218 // fast_lock_region->in(2) - the prototype header is no longer biased
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2219 // and we have to revoke the bias on this object.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2220 // We are going to try to reset the mark of this object to the prototype
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2221 // value and fall through to the CAS-based locking scheme.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2222 Node* adr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes());
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2223 Node* cas = new (C) StoreXConditionalNode(not_biased_ctrl, mem, adr,
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2224 proto_node, mark_node);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2225 transform_later(cas);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2226 Node* proj = transform_later( new (C) SCMemProjNode(cas));
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2227 fast_lock_mem_phi->init_req(2, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2228
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2229
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2230 // Second, check epoch bits.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2231 Node* rebiased_region = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2232 Node* old_phi = new (C) PhiNode( rebiased_region, TypeX_X);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2233 Node* new_phi = new (C) PhiNode( rebiased_region, TypeX_X);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2234
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2235 // Get slow path - mark word does NOT match epoch bits.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2236 Node* epoch_ctrl = opt_bits_test(ctrl, rebiased_region, 1, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2237 markOopDesc::epoch_mask_in_place, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2238 // The epoch of the current bias is not valid, attempt to rebias the object
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2239 // toward the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2240 rebiased_region->init_req(2, epoch_ctrl);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2241 old_phi->init_req(2, mark_node);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2242 new_phi->init_req(2, o_node);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2243
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2244 // rebiased_region->in(1) is set to fast path.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2245 // The epoch of the current bias is still valid but we know
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2246 // nothing about the owner; it might be set or it might be clear.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2247 Node* cmask = MakeConX(markOopDesc::biased_lock_mask_in_place |
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2248 markOopDesc::age_mask_in_place |
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2249 markOopDesc::epoch_mask_in_place);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2250 Node* old = transform_later(new (C) AndXNode(mark_node, cmask));
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2251 cast_thread = transform_later(new (C) CastP2XNode(ctrl, thread));
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2252 Node* new_mark = transform_later(new (C) OrXNode(cast_thread, old));
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2253 old_phi->init_req(1, old);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2254 new_phi->init_req(1, new_mark);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2255
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2256 transform_later(rebiased_region);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2257 transform_later(old_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2258 transform_later(new_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2259
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2260 // Try to acquire the bias of the object using an atomic operation.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2261 // If this fails we will go in to the runtime to revoke the object's bias.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2262 cas = new (C) StoreXConditionalNode(rebiased_region, mem, adr,
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2263 new_phi, old_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2264 transform_later(cas);
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2265 proj = transform_later( new (C) SCMemProjNode(cas));
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2266
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2267 // Get slow path - Failed to CAS.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2268 not_biased_ctrl = opt_bits_test(rebiased_region, region, 4, cas, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2269 mem_phi->init_req(4, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2270 // region->in(4) is set to fast path - the object is rebiased to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2271
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2272 // Failed to CAS.
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2273 slow_path = new (C) RegionNode(3);
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2274 Node *slow_mem = new (C) PhiNode( slow_path, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2275
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2276 slow_path->init_req(1, not_biased_ctrl); // Capture slow-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2277 slow_mem->init_req(1, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2278
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2279 // Call CAS-based locking scheme (FastLock node).
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2280
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2281 transform_later(fast_lock_region);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2282 transform_later(fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2283
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2284 // Get slow path - FastLock failed to lock the object.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2285 ctrl = opt_bits_test(fast_lock_region, region, 2, flock, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2286 mem_phi->init_req(2, fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2287 // region->in(2) is set to fast path - the object is locked to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2288
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2289 slow_path->init_req(2, ctrl); // Capture slow-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2290 slow_mem->init_req(2, fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2291
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2292 transform_later(slow_path);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2293 transform_later(slow_mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2294 // Reset lock's memory edge.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2295 lock->set_req(TypeFunc::Memory, slow_mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2296
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2297 } else {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2298 region = new (C) RegionNode(3);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2299 // create a Phi for the memory state
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2300 mem_phi = new (C) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2301
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2302 // Optimize test; set region slot 2
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2303 slow_path = opt_bits_test(ctrl, region, 2, flock, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2304 mem_phi->init_req(2, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2305 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2306
a61af66fc99e Initial load
duke
parents:
diff changeset
2307 // Make slow path call
a61af66fc99e Initial load
duke
parents:
diff changeset
2308 CallNode *call = make_slow_call( (CallNode *) lock, OptoRuntime::complete_monitor_enter_Type(), OptoRuntime::complete_monitor_locking_Java(), NULL, slow_path, obj, box );
a61af66fc99e Initial load
duke
parents:
diff changeset
2309
a61af66fc99e Initial load
duke
parents:
diff changeset
2310 extract_call_projections(call);
a61af66fc99e Initial load
duke
parents:
diff changeset
2311
a61af66fc99e Initial load
duke
parents:
diff changeset
2312 // Slow path can only throw asynchronous exceptions, which are always
a61af66fc99e Initial load
duke
parents:
diff changeset
2313 // de-opted. So the compiler thinks the slow-call can never throw an
a61af66fc99e Initial load
duke
parents:
diff changeset
2314 // exception. If it DOES throw an exception we would need the debug
a61af66fc99e Initial load
duke
parents:
diff changeset
2315 // info removed first (since if it throws there is no monitor).
a61af66fc99e Initial load
duke
parents:
diff changeset
2316 assert ( _ioproj_fallthrough == NULL && _ioproj_catchall == NULL &&
a61af66fc99e Initial load
duke
parents:
diff changeset
2317 _memproj_catchall == NULL && _catchallcatchproj == NULL, "Unexpected projection from Lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
2318
a61af66fc99e Initial load
duke
parents:
diff changeset
2319 // Capture slow path
a61af66fc99e Initial load
duke
parents:
diff changeset
2320 // disconnect fall-through projection from call and create a new one
a61af66fc99e Initial load
duke
parents:
diff changeset
2321 // hook up users of fall-through projection to region
a61af66fc99e Initial load
duke
parents:
diff changeset
2322 Node *slow_ctrl = _fallthroughproj->clone();
a61af66fc99e Initial load
duke
parents:
diff changeset
2323 transform_later(slow_ctrl);
a61af66fc99e Initial load
duke
parents:
diff changeset
2324 _igvn.hash_delete(_fallthroughproj);
7196
2aff40cb4703 7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents: 6848
diff changeset
2325 _fallthroughproj->disconnect_inputs(NULL, C);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2326 region->init_req(1, slow_ctrl);
a61af66fc99e Initial load
duke
parents:
diff changeset
2327 // region inputs are now complete
a61af66fc99e Initial load
duke
parents:
diff changeset
2328 transform_later(region);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2329 _igvn.replace_node(_fallthroughproj, region);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2330
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2331 Node *memproj = transform_later( new(C) ProjNode(call, TypeFunc::Memory) );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2332 mem_phi->init_req(1, memproj );
a61af66fc99e Initial load
duke
parents:
diff changeset
2333 transform_later(mem_phi);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2334 _igvn.replace_node(_memproj_fallthrough, mem_phi);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2335 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2336
a61af66fc99e Initial load
duke
parents:
diff changeset
2337 //------------------------------expand_unlock_node----------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
2338 void PhaseMacroExpand::expand_unlock_node(UnlockNode *unlock) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2339
66
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents: 63
diff changeset
2340 Node* ctrl = unlock->in(TypeFunc::Control);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2341 Node* mem = unlock->in(TypeFunc::Memory);
a61af66fc99e Initial load
duke
parents:
diff changeset
2342 Node* obj = unlock->obj_node();
a61af66fc99e Initial load
duke
parents:
diff changeset
2343 Node* box = unlock->box_node();
a61af66fc99e Initial load
duke
parents:
diff changeset
2344
4790
b0ff910edfc9 7128355: assert(!nocreate) failed: Cannot build a phi for a block already parsed
kvn
parents: 4778
diff changeset
2345 assert(!box->as_BoxLock()->is_eliminated(), "sanity");
4777
e9a5e0a812c8 7125896: Eliminate nested locks
kvn
parents: 4769
diff changeset
2346
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2347 // No need for a null check on unlock
a61af66fc99e Initial load
duke
parents:
diff changeset
2348
a61af66fc99e Initial load
duke
parents:
diff changeset
2349 // Make the merge point
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2350 Node *region;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2351 Node *mem_phi;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2352
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2353 if (UseOptoBiasInlining) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2354 // Check for biased locking unlock case, which is a no-op.
605
98cb887364d3 6810672: Comment typos
twisti
parents: 601
diff changeset
2355 // See the full description in MacroAssembler::biased_locking_exit().
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2356 region = new (C) RegionNode(4);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2357 // create a Phi for the memory state
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2358 mem_phi = new (C) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2359 mem_phi->init_req(3, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2360
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2361 Node* mark_node = make_load(ctrl, mem, obj, oopDesc::mark_offset_in_bytes(), TypeX_X, TypeX_X->basic_type());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2362 ctrl = opt_bits_test(ctrl, region, 3, mark_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2363 markOopDesc::biased_lock_mask_in_place,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2364 markOopDesc::biased_lock_pattern);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2365 } else {
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2366 region = new (C) RegionNode(3);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2367 // create a Phi for the memory state
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2368 mem_phi = new (C) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2369 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2370
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2371 FastUnlockNode *funlock = new (C) FastUnlockNode( ctrl, obj, box );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2372 funlock = transform_later( funlock )->as_FastUnlock();
a61af66fc99e Initial load
duke
parents:
diff changeset
2373 // Optimize test; set region slot 2
420
a1980da045cc 6462850: generate biased locking code in C2 ideal graph
kvn
parents: 362
diff changeset
2374 Node *slow_path = opt_bits_test(ctrl, region, 2, funlock, 0, 0);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2375
a61af66fc99e Initial load
duke
parents:
diff changeset
2376 CallNode *call = make_slow_call( (CallNode *) unlock, OptoRuntime::complete_monitor_exit_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_unlocking_C), "complete_monitor_unlocking_C", slow_path, obj, box );
a61af66fc99e Initial load
duke
parents:
diff changeset
2377
a61af66fc99e Initial load
duke
parents:
diff changeset
2378 extract_call_projections(call);
a61af66fc99e Initial load
duke
parents:
diff changeset
2379
a61af66fc99e Initial load
duke
parents:
diff changeset
2380 assert ( _ioproj_fallthrough == NULL && _ioproj_catchall == NULL &&
a61af66fc99e Initial load
duke
parents:
diff changeset
2381 _memproj_catchall == NULL && _catchallcatchproj == NULL, "Unexpected projection from Lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
2382
a61af66fc99e Initial load
duke
parents:
diff changeset
2383 // No exceptions for unlocking
a61af66fc99e Initial load
duke
parents:
diff changeset
2384 // Capture slow path
a61af66fc99e Initial load
duke
parents:
diff changeset
2385 // disconnect fall-through projection from call and create a new one
a61af66fc99e Initial load
duke
parents:
diff changeset
2386 // hook up users of fall-through projection to region
a61af66fc99e Initial load
duke
parents:
diff changeset
2387 Node *slow_ctrl = _fallthroughproj->clone();
a61af66fc99e Initial load
duke
parents:
diff changeset
2388 transform_later(slow_ctrl);
a61af66fc99e Initial load
duke
parents:
diff changeset
2389 _igvn.hash_delete(_fallthroughproj);
7196
2aff40cb4703 7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents: 6848
diff changeset
2390 _fallthroughproj->disconnect_inputs(NULL, C);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2391 region->init_req(1, slow_ctrl);
a61af66fc99e Initial load
duke
parents:
diff changeset
2392 // region inputs are now complete
a61af66fc99e Initial load
duke
parents:
diff changeset
2393 transform_later(region);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2394 _igvn.replace_node(_fallthroughproj, region);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2395
6804
e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents: 6725
diff changeset
2396 Node *memproj = transform_later( new(C) ProjNode(call, TypeFunc::Memory) );
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2397 mem_phi->init_req(1, memproj );
a61af66fc99e Initial load
duke
parents:
diff changeset
2398 mem_phi->init_req(2, mem);
a61af66fc99e Initial load
duke
parents:
diff changeset
2399 transform_later(mem_phi);
708
f2049ae95c3d 6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
kvn
parents: 628
diff changeset
2400 _igvn.replace_node(_memproj_fallthrough, mem_phi);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2401 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2402
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2403 //---------------------------eliminate_macro_nodes----------------------
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2404 // Eliminate scalar replaced allocations and associated locks.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2405 void PhaseMacroExpand::eliminate_macro_nodes() {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2406 if (C->macro_count() == 0)
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2407 return;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2408
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2409 // First, attempt to eliminate locks
3754
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2410 int cnt = C->macro_count();
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2411 for (int i=0; i < cnt; i++) {
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2412 Node *n = C->macro_node(i);
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2413 if (n->is_AbstractLock()) { // Lock and Unlock nodes
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2414 // Before elimination mark all associated (same box and obj)
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2415 // lock and unlock nodes.
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2416 mark_eliminated_locking_nodes(n->as_AbstractLock());
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2417 }
642c68c75db9 7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
kvn
parents: 3345
diff changeset
2418 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2419 bool progress = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2420 while (progress) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2421 progress = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2422 for (int i = C->macro_count(); i > 0; i--) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2423 Node * n = C->macro_node(i-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2424 bool success = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2425 debug_only(int old_macro_count = C->macro_count(););
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2426 if (n->is_AbstractLock()) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2427 success = eliminate_locking_node(n->as_AbstractLock());
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2428 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2429 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2430 progress = progress || success;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2431 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2432 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2433 // Next, attempt to eliminate allocations
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2434 progress = true;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2435 while (progress) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2436 progress = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2437 for (int i = C->macro_count(); i > 0; i--) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2438 Node * n = C->macro_node(i-1);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2439 bool success = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2440 debug_only(int old_macro_count = C->macro_count(););
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2441 switch (n->class_id()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2442 case Node::Class_Allocate:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2443 case Node::Class_AllocateArray:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2444 success = eliminate_allocate_node(n->as_Allocate());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2445 break;
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2446 case Node::Class_CallStaticJava:
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2447 success = eliminate_boxing_node(n->as_CallStaticJava());
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2448 break;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2449 case Node::Class_Lock:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2450 case Node::Class_Unlock:
460
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents: 436
diff changeset
2451 assert(!n->as_AbstractLock()->is_eliminated(), "sanity");
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2452 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2453 default:
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2454 assert(n->Opcode() == Op_LoopLimit ||
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2455 n->Opcode() == Op_Opaque1 ||
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2456 n->Opcode() == Op_Opaque2, "unknown node type in macro list");
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2457 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2458 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2459 progress = progress || success;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2460 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2461 }
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2462 }
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2463
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2464 //------------------------------expand_macro_nodes----------------------
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2465 // Returns true if a failure occurred.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2466 bool PhaseMacroExpand::expand_macro_nodes() {
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2467 // Last attempt to eliminate macro nodes.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2468 eliminate_macro_nodes();
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2469
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2470 // Make sure expansion will not cause node limit to be exceeded.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2471 // Worst case is a macro node gets expanded into about 50 nodes.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2472 // Allow 50% more for optimization.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2473 if (C->check_node_count(C->macro_count() * 75, "out of nodes before macro expansion" ) )
a61af66fc99e Initial load
duke
parents:
diff changeset
2474 return true;
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2475
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2476 // Eliminate Opaque and LoopLimit nodes. Do it after all loop optimizations.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2477 bool progress = true;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2478 while (progress) {
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2479 progress = false;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2480 for (int i = C->macro_count(); i > 0; i--) {
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2481 Node * n = C->macro_node(i-1);
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2482 bool success = false;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2483 debug_only(int old_macro_count = C->macro_count(););
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2484 if (n->Opcode() == Op_LoopLimit) {
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2485 // Remove it from macro list and put on IGVN worklist to optimize.
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2486 C->remove_macro_node(n);
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2487 _igvn._worklist.push(n);
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2488 success = true;
10278
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2489 } else if (n->Opcode() == Op_CallStaticJava) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2490 // Remove it from macro list and put on IGVN worklist to optimize.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2491 C->remove_macro_node(n);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2492 _igvn._worklist.push(n);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 8694
diff changeset
2493 success = true;
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2494 } else if (n->Opcode() == Op_Opaque1 || n->Opcode() == Op_Opaque2) {
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2495 _igvn.replace_node(n, n->in(1));
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2496 success = true;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2497 }
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2498 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2499 progress = progress || success;
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2500 }
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2501 }
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2502
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2503 // expand "macro" nodes
a61af66fc99e Initial load
duke
parents:
diff changeset
2504 // nodes are removed from the macro list as they are processed
a61af66fc99e Initial load
duke
parents:
diff changeset
2505 while (C->macro_count() > 0) {
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2506 int macro_count = C->macro_count();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2507 Node * n = C->macro_node(macro_count-1);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2508 assert(n->is_macro(), "only macro nodes expected here");
a61af66fc99e Initial load
duke
parents:
diff changeset
2509 if (_igvn.type(n) == Type::TOP || n->in(0)->is_top() ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2510 // node is unreachable, so don't try to expand it
a61af66fc99e Initial load
duke
parents:
diff changeset
2511 C->remove_macro_node(n);
a61af66fc99e Initial load
duke
parents:
diff changeset
2512 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2513 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2514 switch (n->class_id()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2515 case Node::Class_Allocate:
a61af66fc99e Initial load
duke
parents:
diff changeset
2516 expand_allocate(n->as_Allocate());
a61af66fc99e Initial load
duke
parents:
diff changeset
2517 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2518 case Node::Class_AllocateArray:
a61af66fc99e Initial load
duke
parents:
diff changeset
2519 expand_allocate_array(n->as_AllocateArray());
a61af66fc99e Initial load
duke
parents:
diff changeset
2520 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2521 case Node::Class_Lock:
a61af66fc99e Initial load
duke
parents:
diff changeset
2522 expand_lock_node(n->as_Lock());
a61af66fc99e Initial load
duke
parents:
diff changeset
2523 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2524 case Node::Class_Unlock:
a61af66fc99e Initial load
duke
parents:
diff changeset
2525 expand_unlock_node(n->as_Unlock());
a61af66fc99e Initial load
duke
parents:
diff changeset
2526 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2527 default:
a61af66fc99e Initial load
duke
parents:
diff changeset
2528 assert(false, "unknown node type in macro list");
a61af66fc99e Initial load
duke
parents:
diff changeset
2529 }
73
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects
kvn
parents: 66
diff changeset
2530 assert(C->macro_count() < macro_count, "must have deleted a node from macro list");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2531 if (C->failing()) return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2532 }
113
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
2533
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 73
diff changeset
2534 _igvn.set_delay_transform(false);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2535 _igvn.optimize();
4115
1bd45abaa507 6890673: Eliminate allocations immediately after EA
kvn
parents: 3961
diff changeset
2536 if (C->failing()) return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2537 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2538 }