Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | b51e29501f30 |
children | 92aa6797d639 |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "interpreter/bytecode.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/linkResolver.hpp" | |
7956 | 30 #include "memory/heapInspection.hpp" |
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31 #include "oops/methodData.hpp" |
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32 #include "prims/jvmtiRedefineClasses.hpp" |
1972 | 33 #include "runtime/compilationPolicy.hpp" |
34 #include "runtime/deoptimization.hpp" | |
35 #include "runtime/handles.inline.hpp" | |
0 | 36 |
37 // ================================================================== | |
38 // DataLayout | |
39 // | |
40 // Overlay for generic profiling data. | |
41 | |
42 // Some types of data layouts need a length field. | |
43 bool DataLayout::needs_array_len(u1 tag) { | |
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44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag); |
0 | 45 } |
46 | |
47 // Perform generic initialization of the data. More specific | |
48 // initialization occurs in overrides of ProfileData::post_initialize. | |
49 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { | |
50 _header._bits = (intptr_t)0; | |
51 _header._struct._tag = tag; | |
52 _header._struct._bci = bci; | |
53 for (int i = 0; i < cell_count; i++) { | |
54 set_cell_at(i, (intptr_t)0); | |
55 } | |
56 if (needs_array_len(tag)) { | |
57 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. | |
58 } | |
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59 if (tag == call_type_data_tag) { |
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60 CallTypeData::initialize(this, cell_count); |
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61 } else if (tag == virtual_call_type_data_tag) { |
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62 VirtualCallTypeData::initialize(this, cell_count); |
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63 } |
0 | 64 } |
65 | |
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66 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) { |
941 | 67 ResourceMark m; |
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68 data_in()->clean_weak_klass_links(cl); |
941 | 69 } |
70 | |
71 | |
0 | 72 // ================================================================== |
73 // ProfileData | |
74 // | |
75 // A ProfileData object is created to refer to a section of profiling | |
76 // data in a structured way. | |
77 | |
78 // Constructor for invalid ProfileData. | |
79 ProfileData::ProfileData() { | |
80 _data = NULL; | |
81 } | |
82 | |
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83 char* ProfileData::print_data_on_helper(const MethodData* md) const { |
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84 DataLayout* dp = md->extra_data_base(); |
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85 DataLayout* end = md->extra_data_limit(); |
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86 stringStream ss; |
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87 for (;; dp = MethodData::next_extra(dp)) { |
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88 assert(dp < end, "moved past end of extra data"); |
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89 switch(dp->tag()) { |
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90 case DataLayout::speculative_trap_data_tag: |
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91 if (dp->bci() == bci()) { |
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92 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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93 int trap = data->trap_state(); |
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94 char buf[100]; |
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95 ss.print("trap/"); |
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96 data->method()->print_short_name(&ss); |
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97 ss.print("(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); |
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98 } |
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99 break; |
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100 case DataLayout::bit_data_tag: |
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101 break; |
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102 case DataLayout::no_tag: |
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103 case DataLayout::arg_info_data_tag: |
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104 return ss.as_string(); |
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105 break; |
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106 default: |
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107 fatal(err_msg("unexpected tag %d", dp->tag())); |
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108 } |
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109 } |
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110 return NULL; |
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111 } |
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112 |
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113 void ProfileData::print_data_on(outputStream* st, const MethodData* md) const { |
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114 print_data_on(st, print_data_on_helper(md)); |
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115 } |
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116 |
0 | 117 #ifndef PRODUCT |
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118 void ProfileData::print_shared(outputStream* st, const char* name, const char* extra) const { |
0 | 119 st->print("bci: %d", bci()); |
120 st->fill_to(tab_width_one); | |
121 st->print("%s", name); | |
122 tab(st); | |
123 int trap = trap_state(); | |
124 if (trap != 0) { | |
125 char buf[100]; | |
126 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); | |
127 } | |
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128 if (extra != NULL) { |
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129 st->print(extra); |
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130 } |
0 | 131 int flags = data()->flags(); |
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132 if (flags != 0) { |
0 | 133 st->print("flags(%d) ", flags); |
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134 } |
0 | 135 } |
136 | |
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137 void ProfileData::tab(outputStream* st, bool first) const { |
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138 st->fill_to(first ? tab_width_one : tab_width_two); |
0 | 139 } |
140 #endif // !PRODUCT | |
141 | |
142 // ================================================================== | |
143 // BitData | |
144 // | |
145 // A BitData corresponds to a one-bit flag. This is used to indicate | |
146 // whether a checkcast bytecode has seen a null value. | |
147 | |
148 | |
149 #ifndef PRODUCT | |
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150 void BitData::print_data_on(outputStream* st, const char* extra) const { |
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151 print_shared(st, "BitData", extra); |
0 | 152 } |
153 #endif // !PRODUCT | |
154 | |
155 // ================================================================== | |
156 // CounterData | |
157 // | |
158 // A CounterData corresponds to a simple counter. | |
159 | |
160 #ifndef PRODUCT | |
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161 void CounterData::print_data_on(outputStream* st, const char* extra) const { |
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162 print_shared(st, "CounterData", extra); |
0 | 163 st->print_cr("count(%u)", count()); |
164 } | |
165 #endif // !PRODUCT | |
166 | |
167 // ================================================================== | |
168 // JumpData | |
169 // | |
170 // A JumpData is used to access profiling information for a direct | |
171 // branch. It is a counter, used for counting the number of branches, | |
172 // plus a data displacement, used for realigning the data pointer to | |
173 // the corresponding target bci. | |
174 | |
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175 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 176 assert(stream->bci() == bci(), "wrong pos"); |
177 int target; | |
178 Bytecodes::Code c = stream->code(); | |
179 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { | |
180 target = stream->dest_w(); | |
181 } else { | |
182 target = stream->dest(); | |
183 } | |
184 int my_di = mdo->dp_to_di(dp()); | |
185 int target_di = mdo->bci_to_di(target); | |
186 int offset = target_di - my_di; | |
187 set_displacement(offset); | |
188 } | |
189 | |
190 #ifndef PRODUCT | |
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191 void JumpData::print_data_on(outputStream* st, const char* extra) const { |
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192 print_shared(st, "JumpData", extra); |
0 | 193 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); |
194 } | |
195 #endif // !PRODUCT | |
196 | |
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197 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, bool include_receiver, int max) { |
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198 // Parameter profiling include the receiver |
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199 int args_count = include_receiver ? 1 : 0; |
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200 ResourceMark rm; |
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201 SignatureStream ss(signature); |
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202 args_count += ss.reference_parameter_count(); |
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203 args_count = MIN2(args_count, max); |
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204 return args_count * per_arg_cell_count; |
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205 } |
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206 |
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207 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { |
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208 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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209 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); |
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210 Bytecode_invoke inv(stream->method(), stream->bci()); |
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211 int args_cell = 0; |
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212 if (arguments_profiling_enabled()) { |
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213 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit); |
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214 } |
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215 int ret_cell = 0; |
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216 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { |
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217 ret_cell = ReturnTypeEntry::static_cell_count(); |
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218 } |
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219 int header_cell = 0; |
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220 if (args_cell + ret_cell > 0) { |
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221 header_cell = header_cell_count(); |
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222 } |
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223 |
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224 return header_cell + args_cell + ret_cell; |
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225 } |
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226 |
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227 class ArgumentOffsetComputer : public SignatureInfo { |
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228 private: |
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229 int _max; |
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230 GrowableArray<int> _offsets; |
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231 |
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232 void set(int size, BasicType type) { _size += size; } |
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233 void do_object(int begin, int end) { |
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234 if (_offsets.length() < _max) { |
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235 _offsets.push(_size); |
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236 } |
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237 SignatureInfo::do_object(begin, end); |
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238 } |
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239 void do_array (int begin, int end) { |
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240 if (_offsets.length() < _max) { |
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241 _offsets.push(_size); |
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242 } |
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243 SignatureInfo::do_array(begin, end); |
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244 } |
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245 |
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246 public: |
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247 ArgumentOffsetComputer(Symbol* signature, int max) |
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248 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { |
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249 } |
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250 |
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251 int total() { lazy_iterate_parameters(); return _size; } |
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252 |
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253 int off_at(int i) const { return _offsets.at(i); } |
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254 }; |
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255 |
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256 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver, bool include_receiver) { |
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257 ResourceMark rm; |
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258 int start = 0; |
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259 // Parameter profiling include the receiver |
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260 if (include_receiver && has_receiver) { |
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261 set_stack_slot(0, 0); |
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262 set_type(0, type_none()); |
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263 start += 1; |
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264 } |
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265 ArgumentOffsetComputer aos(signature, _number_of_entries-start); |
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266 aos.total(); |
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267 for (int i = start; i < _number_of_entries; i++) { |
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268 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0)); |
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269 set_type(i, type_none()); |
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270 } |
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271 } |
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272 |
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273 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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274 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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275 Bytecode_invoke inv(stream->method(), stream->bci()); |
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276 |
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277 SignatureStream ss(inv.signature()); |
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278 if (has_arguments()) { |
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279 #ifdef ASSERT |
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280 ResourceMark rm; |
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281 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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282 assert(count > 0, "room for args type but none found?"); |
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283 check_number_of_arguments(count); |
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284 #endif |
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285 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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286 } |
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287 |
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288 if (has_return()) { |
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289 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); |
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290 _ret.post_initialize(); |
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291 } |
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292 } |
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293 |
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294 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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295 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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296 Bytecode_invoke inv(stream->method(), stream->bci()); |
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297 |
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298 if (has_arguments()) { |
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299 #ifdef ASSERT |
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300 ResourceMark rm; |
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301 SignatureStream ss(inv.signature()); |
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302 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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303 assert(count > 0, "room for args type but none found?"); |
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304 check_number_of_arguments(count); |
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305 #endif |
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306 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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307 } |
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308 |
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309 if (has_return()) { |
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310 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); |
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311 _ret.post_initialize(); |
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312 } |
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313 } |
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314 |
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315 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { |
13080 | 316 Klass* k = (Klass*)klass_part(p); |
317 return k != NULL && k->is_loader_alive(is_alive_cl); | |
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318 } |
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319 |
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320 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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321 for (int i = 0; i < _number_of_entries; i++) { |
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322 intptr_t p = type(i); |
13080 | 323 if (!is_loader_alive(is_alive_cl, p)) { |
324 set_type(i, with_status((Klass*)NULL, p)); | |
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325 } |
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326 } |
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327 } |
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328 |
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329 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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330 intptr_t p = type(); |
13080 | 331 if (!is_loader_alive(is_alive_cl, p)) { |
332 set_type(with_status((Klass*)NULL, p)); | |
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333 } |
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334 } |
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335 |
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336 bool TypeEntriesAtCall::return_profiling_enabled() { |
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337 return MethodData::profile_return(); |
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338 } |
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339 |
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340 bool TypeEntriesAtCall::arguments_profiling_enabled() { |
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341 return MethodData::profile_arguments(); |
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342 } |
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343 |
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344 #ifndef PRODUCT |
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345 void TypeEntries::print_klass(outputStream* st, intptr_t k) { |
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346 if (is_type_none(k)) { |
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347 st->print("none"); |
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348 } else if (is_type_unknown(k)) { |
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349 st->print("unknown"); |
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350 } else { |
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351 valid_klass(k)->print_value_on(st); |
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352 } |
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353 if (was_null_seen(k)) { |
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354 st->print(" (null seen)"); |
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355 } |
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356 } |
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357 |
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358 void TypeStackSlotEntries::print_data_on(outputStream* st) const { |
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359 for (int i = 0; i < _number_of_entries; i++) { |
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360 _pd->tab(st); |
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361 st->print("%d: stack(%u) ", i, stack_slot(i)); |
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362 print_klass(st, type(i)); |
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363 st->cr(); |
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364 } |
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365 } |
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366 |
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367 void ReturnTypeEntry::print_data_on(outputStream* st) const { |
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368 _pd->tab(st); |
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369 print_klass(st, type()); |
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370 st->cr(); |
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371 } |
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372 |
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373 void CallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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374 CounterData::print_data_on(st, extra); |
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375 if (has_arguments()) { |
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376 tab(st, true); |
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377 st->print("argument types"); |
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378 _args.print_data_on(st); |
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379 } |
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380 if (has_return()) { |
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381 tab(st, true); |
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382 st->print("return type"); |
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383 _ret.print_data_on(st); |
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384 } |
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385 } |
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386 |
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387 void VirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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388 VirtualCallData::print_data_on(st, extra); |
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389 if (has_arguments()) { |
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390 tab(st, true); |
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391 st->print("argument types"); |
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392 _args.print_data_on(st); |
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393 } |
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394 if (has_return()) { |
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395 tab(st, true); |
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396 st->print("return type"); |
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397 _ret.print_data_on(st); |
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398 } |
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399 } |
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400 #endif |
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401 |
0 | 402 // ================================================================== |
403 // ReceiverTypeData | |
404 // | |
405 // A ReceiverTypeData is used to access profiling information about a | |
406 // dynamic type check. It consists of a counter which counts the total times | |
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407 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 408 // which are used to store a type profile for the receiver of the check. |
409 | |
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410 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
941 | 411 for (uint row = 0; row < row_limit(); row++) { |
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412 Klass* p = receiver(row); |
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413 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { |
941 | 414 clear_row(row); |
415 } | |
416 } | |
417 } | |
418 | |
9765 | 419 #ifdef GRAAL |
420 void VirtualCallData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { | |
421 ReceiverTypeData::clean_weak_klass_links(is_alive_cl); | |
422 for (uint row = 0; row < method_row_limit(); row++) { | |
423 Method* p = method(row); | |
424 if (p != NULL && !p->method_holder()->is_loader_alive(is_alive_cl)) { | |
425 clear_method_row(row); | |
426 } | |
427 } | |
428 } | |
429 #endif // GRAAL | |
430 | |
0 | 431 #ifndef PRODUCT |
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432 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 433 uint row; |
434 int entries = 0; | |
435 for (row = 0; row < row_limit(); row++) { | |
436 if (receiver(row) != NULL) entries++; | |
437 } | |
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438 #ifdef GRAAL |
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439 st->print_cr("count(%u) nonprofiled_count(%u) entries(%u)", count(), nonprofiled_count(), entries); |
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440 #else |
0 | 441 st->print_cr("count(%u) entries(%u)", count(), entries); |
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442 #endif |
1783 | 443 int total = count(); |
444 for (row = 0; row < row_limit(); row++) { | |
445 if (receiver(row) != NULL) { | |
446 total += receiver_count(row); | |
447 } | |
448 } | |
0 | 449 for (row = 0; row < row_limit(); row++) { |
450 if (receiver(row) != NULL) { | |
451 tab(st); | |
452 receiver(row)->print_value_on(st); | |
1783 | 453 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 454 } |
455 } | |
456 } | |
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457 void ReceiverTypeData::print_data_on(outputStream* st, const char* extra) const { |
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458 print_shared(st, "ReceiverTypeData", extra); |
0 | 459 print_receiver_data_on(st); |
460 } | |
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461 |
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462 #ifdef GRAAL |
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463 void VirtualCallData::print_method_data_on(outputStream* st) const { |
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464 uint row; |
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465 int entries = 0; |
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466 for (row = 0; row < method_row_limit(); row++) { |
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467 if (method(row) != NULL) entries++; |
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468 } |
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469 tab(st); |
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470 st->print_cr("method_entries(%u)", entries); |
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471 int total = count(); |
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472 for (row = 0; row < method_row_limit(); row++) { |
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473 if (method(row) != NULL) { |
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474 total += method_count(row); |
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475 } |
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476 } |
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477 for (row = 0; row < method_row_limit(); row++) { |
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478 if (method(row) != NULL) { |
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479 tab(st); |
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480 method(row)->print_value_on(st); |
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481 st->print_cr("(%u %4.2f)", method_count(row), (float) method_count(row) / (float) total); |
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482 } |
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483 } |
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484 } |
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485 #endif |
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486 |
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487 void VirtualCallData::print_data_on(outputStream* st, const char* extra) const { |
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488 print_shared(st, "VirtualCallData", extra); |
0 | 489 print_receiver_data_on(st); |
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490 #ifdef GRAAL |
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491 print_method_data_on(st); |
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492 #endif |
0 | 493 } |
494 #endif // !PRODUCT | |
495 | |
496 // ================================================================== | |
497 // RetData | |
498 // | |
499 // A RetData is used to access profiling information for a ret bytecode. | |
500 // It is composed of a count of the number of times that the ret has | |
501 // been executed, followed by a series of triples of the form | |
502 // (bci, count, di) which count the number of times that some bci was the | |
503 // target of the ret and cache a corresponding displacement. | |
504 | |
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505 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 506 for (uint row = 0; row < row_limit(); row++) { |
507 set_bci_displacement(row, -1); | |
508 set_bci(row, no_bci); | |
509 } | |
510 // release so other threads see a consistent state. bci is used as | |
511 // a valid flag for bci_displacement. | |
512 OrderAccess::release(); | |
513 } | |
514 | |
515 // This routine needs to atomically update the RetData structure, so the | |
516 // caller needs to hold the RetData_lock before it gets here. Since taking | |
517 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
518 // wrapper around a derived oop, taking the lock in _this_ method will | |
519 // basically cause the 'this' pointer's _data field to contain junk after the | |
520 // lock. We require the caller to take the lock before making the ProfileData | |
521 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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522 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 523 // First find the mdp which corresponds to the return bci. |
524 address mdp = h_mdo->bci_to_dp(return_bci); | |
525 | |
526 // Now check to see if any of the cache slots are open. | |
527 for (uint row = 0; row < row_limit(); row++) { | |
528 if (bci(row) == no_bci) { | |
529 set_bci_displacement(row, mdp - dp()); | |
530 set_bci_count(row, DataLayout::counter_increment); | |
531 // Barrier to ensure displacement is written before the bci; allows | |
532 // the interpreter to read displacement without fear of race condition. | |
533 release_set_bci(row, return_bci); | |
534 break; | |
535 } | |
536 } | |
537 return mdp; | |
538 } | |
539 | |
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540 #ifdef CC_INTERP |
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541 DataLayout* RetData::advance(MethodData *md, int bci) { |
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542 return (DataLayout*) md->bci_to_dp(bci); |
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543 } |
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544 #endif // CC_INTERP |
0 | 545 |
546 #ifndef PRODUCT | |
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547 void RetData::print_data_on(outputStream* st, const char* extra) const { |
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548 print_shared(st, "RetData", extra); |
0 | 549 uint row; |
550 int entries = 0; | |
551 for (row = 0; row < row_limit(); row++) { | |
552 if (bci(row) != no_bci) entries++; | |
553 } | |
554 st->print_cr("count(%u) entries(%u)", count(), entries); | |
555 for (row = 0; row < row_limit(); row++) { | |
556 if (bci(row) != no_bci) { | |
557 tab(st); | |
558 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
559 bci(row), bci_count(row), bci_displacement(row)); | |
560 } | |
561 } | |
562 } | |
563 #endif // !PRODUCT | |
564 | |
565 // ================================================================== | |
566 // BranchData | |
567 // | |
568 // A BranchData is used to access profiling data for a two-way branch. | |
569 // It consists of taken and not_taken counts as well as a data displacement | |
570 // for the taken case. | |
571 | |
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572 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 573 assert(stream->bci() == bci(), "wrong pos"); |
574 int target = stream->dest(); | |
575 int my_di = mdo->dp_to_di(dp()); | |
576 int target_di = mdo->bci_to_di(target); | |
577 int offset = target_di - my_di; | |
578 set_displacement(offset); | |
579 } | |
580 | |
581 #ifndef PRODUCT | |
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582 void BranchData::print_data_on(outputStream* st, const char* extra) const { |
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583 print_shared(st, "BranchData", extra); |
0 | 584 st->print_cr("taken(%u) displacement(%d)", |
585 taken(), displacement()); | |
586 tab(st); | |
587 st->print_cr("not taken(%u)", not_taken()); | |
588 } | |
589 #endif | |
590 | |
591 // ================================================================== | |
592 // MultiBranchData | |
593 // | |
594 // A MultiBranchData is used to access profiling information for | |
595 // a multi-way branch (*switch bytecodes). It consists of a series | |
596 // of (count, displacement) pairs, which count the number of times each | |
597 // case was taken and specify the data displacment for each branch target. | |
598 | |
599 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
600 int cell_count = 0; | |
601 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 602 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
603 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 604 } else { |
2142 | 605 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
606 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 607 } |
608 return cell_count; | |
609 } | |
610 | |
611 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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612 MethodData* mdo) { |
0 | 613 assert(stream->bci() == bci(), "wrong pos"); |
614 int target; | |
615 int my_di; | |
616 int target_di; | |
617 int offset; | |
618 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 619 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
620 int len = sw.length(); | |
0 | 621 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
622 for (int count = 0; count < len; count++) { | |
2142 | 623 target = sw.dest_offset_at(count) + bci(); |
0 | 624 my_di = mdo->dp_to_di(dp()); |
625 target_di = mdo->bci_to_di(target); | |
626 offset = target_di - my_di; | |
627 set_displacement_at(count, offset); | |
628 } | |
2142 | 629 target = sw.default_offset() + bci(); |
0 | 630 my_di = mdo->dp_to_di(dp()); |
631 target_di = mdo->bci_to_di(target); | |
632 offset = target_di - my_di; | |
633 set_default_displacement(offset); | |
634 | |
635 } else { | |
2142 | 636 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
637 int npairs = sw.number_of_pairs(); | |
0 | 638 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
639 for (int count = 0; count < npairs; count++) { | |
2142 | 640 LookupswitchPair pair = sw.pair_at(count); |
641 target = pair.offset() + bci(); | |
0 | 642 my_di = mdo->dp_to_di(dp()); |
643 target_di = mdo->bci_to_di(target); | |
644 offset = target_di - my_di; | |
645 set_displacement_at(count, offset); | |
646 } | |
2142 | 647 target = sw.default_offset() + bci(); |
0 | 648 my_di = mdo->dp_to_di(dp()); |
649 target_di = mdo->bci_to_di(target); | |
650 offset = target_di - my_di; | |
651 set_default_displacement(offset); | |
652 } | |
653 } | |
654 | |
655 #ifndef PRODUCT | |
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656 void MultiBranchData::print_data_on(outputStream* st, const char* extra) const { |
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657 print_shared(st, "MultiBranchData", extra); |
0 | 658 st->print_cr("default_count(%u) displacement(%d)", |
659 default_count(), default_displacement()); | |
660 int cases = number_of_cases(); | |
661 for (int i = 0; i < cases; i++) { | |
662 tab(st); | |
663 st->print_cr("count(%u) displacement(%d)", | |
664 count_at(i), displacement_at(i)); | |
665 } | |
666 } | |
667 #endif | |
668 | |
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669 #ifndef PRODUCT |
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670 void ArgInfoData::print_data_on(outputStream* st, const char* extra) const { |
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671 print_shared(st, "ArgInfoData", extra); |
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672 int nargs = number_of_args(); |
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673 for (int i = 0; i < nargs; i++) { |
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674 st->print(" 0x%x", arg_modified(i)); |
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675 } |
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676 st->cr(); |
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677 } |
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678 |
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679 #endif |
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680 |
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681 int ParametersTypeData::compute_cell_count(Method* m) { |
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682 if (!MethodData::profile_parameters_for_method(m)) { |
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683 return 0; |
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684 } |
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685 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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686 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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687 if (obj_args > 0) { |
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688 return obj_args + 1; // 1 cell for array len |
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689 } |
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690 return 0; |
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691 } |
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692 |
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693 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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694 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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695 } |
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696 |
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697 bool ParametersTypeData::profiling_enabled() { |
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698 return MethodData::profile_parameters(); |
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699 } |
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700 |
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701 #ifndef PRODUCT |
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702 void ParametersTypeData::print_data_on(outputStream* st, const char* extra) const { |
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703 st->print("parameter types", extra); |
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704 _parameters.print_data_on(st); |
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705 } |
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706 |
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707 void SpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const { |
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708 print_shared(st, "SpeculativeTrapData", extra); |
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709 tab(st); |
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710 method()->print_short_name(st); |
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711 st->cr(); |
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712 } |
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713 #endif |
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714 |
0 | 715 // ================================================================== |
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716 // MethodData* |
0 | 717 // |
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718 // A MethodData* holds information which has been collected about |
0 | 719 // a method. |
720 | |
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721 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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722 int size = MethodData::compute_allocation_size_in_words(method); |
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723 |
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724 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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725 MethodData(method(), size, CHECK_NULL); |
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726 } |
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727 |
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728 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8883 | 729 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 730 return no_profile_data; |
731 #else | |
0 | 732 switch (code) { |
733 case Bytecodes::_checkcast: | |
734 case Bytecodes::_instanceof: | |
735 case Bytecodes::_aastore: | |
736 if (TypeProfileCasts) { | |
737 return ReceiverTypeData::static_cell_count(); | |
738 } else { | |
739 return BitData::static_cell_count(); | |
740 } | |
741 case Bytecodes::_invokespecial: | |
742 case Bytecodes::_invokestatic: | |
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743 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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744 return variable_cell_count; |
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|
745 } else { |
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746 return CounterData::static_cell_count(); |
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|
747 } |
0 | 748 case Bytecodes::_goto: |
749 case Bytecodes::_goto_w: | |
750 case Bytecodes::_jsr: | |
751 case Bytecodes::_jsr_w: | |
752 return JumpData::static_cell_count(); | |
753 case Bytecodes::_invokevirtual: | |
754 case Bytecodes::_invokeinterface: | |
12882
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755 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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756 return variable_cell_count; |
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|
757 } else { |
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|
758 return VirtualCallData::static_cell_count(); |
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|
759 } |
726
be93aad57795
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diff
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|
760 case Bytecodes::_invokedynamic: |
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761 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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762 return variable_cell_count; |
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|
763 } else { |
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|
764 return CounterData::static_cell_count(); |
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|
765 } |
0 | 766 case Bytecodes::_ret: |
767 return RetData::static_cell_count(); | |
768 case Bytecodes::_ifeq: | |
769 case Bytecodes::_ifne: | |
770 case Bytecodes::_iflt: | |
771 case Bytecodes::_ifge: | |
772 case Bytecodes::_ifgt: | |
773 case Bytecodes::_ifle: | |
774 case Bytecodes::_if_icmpeq: | |
775 case Bytecodes::_if_icmpne: | |
776 case Bytecodes::_if_icmplt: | |
777 case Bytecodes::_if_icmpge: | |
778 case Bytecodes::_if_icmpgt: | |
779 case Bytecodes::_if_icmple: | |
780 case Bytecodes::_if_acmpeq: | |
781 case Bytecodes::_if_acmpne: | |
782 case Bytecodes::_ifnull: | |
783 case Bytecodes::_ifnonnull: | |
784 return BranchData::static_cell_count(); | |
785 case Bytecodes::_lookupswitch: | |
786 case Bytecodes::_tableswitch: | |
787 return variable_cell_count; | |
788 } | |
789 return no_profile_data; | |
8860 | 790 #endif |
0 | 791 } |
792 | |
793 // Compute the size of the profiling information corresponding to | |
794 // the current bytecode. | |
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795 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 796 int cell_count = bytecode_cell_count(stream->code()); |
797 if (cell_count == no_profile_data) { | |
798 return 0; | |
799 } | |
800 if (cell_count == variable_cell_count) { | |
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|
801 switch (stream->code()) { |
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|
802 case Bytecodes::_lookupswitch: |
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|
803 case Bytecodes::_tableswitch: |
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|
804 cell_count = MultiBranchData::compute_cell_count(stream); |
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|
805 break; |
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|
806 case Bytecodes::_invokespecial: |
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|
807 case Bytecodes::_invokestatic: |
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|
808 case Bytecodes::_invokedynamic: |
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809 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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810 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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811 profile_return_for_invoke(stream->method(), stream->bci())) { |
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812 cell_count = CallTypeData::compute_cell_count(stream); |
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|
813 } else { |
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|
814 cell_count = CounterData::static_cell_count(); |
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|
815 } |
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|
816 break; |
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|
817 case Bytecodes::_invokevirtual: |
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|
818 case Bytecodes::_invokeinterface: { |
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819 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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820 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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821 profile_return_for_invoke(stream->method(), stream->bci())) { |
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822 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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823 } else { |
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824 cell_count = VirtualCallData::static_cell_count(); |
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|
825 } |
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|
826 break; |
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|
827 } |
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|
828 default: |
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|
829 fatal("unexpected bytecode for var length profile data"); |
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|
830 } |
0 | 831 } |
832 // Note: cell_count might be zero, meaning that there is just | |
833 // a DataLayout header, with no extra cells. | |
834 assert(cell_count >= 0, "sanity"); | |
835 return DataLayout::compute_size_in_bytes(cell_count); | |
836 } | |
837 | |
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838 bool MethodData::is_speculative_trap_bytecode(Bytecodes::Code code) { |
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|
839 // Bytecodes for which we may use speculation |
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840 switch (code) { |
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841 case Bytecodes::_checkcast: |
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changeset
|
842 case Bytecodes::_instanceof: |
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|
843 case Bytecodes::_aastore: |
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|
844 case Bytecodes::_invokevirtual: |
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845 case Bytecodes::_invokeinterface: |
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|
846 case Bytecodes::_if_acmpeq: |
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847 case Bytecodes::_if_acmpne: |
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848 case Bytecodes::_invokestatic: |
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|
849 #ifdef COMPILER2 |
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|
850 return UseTypeSpeculation; |
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|
851 #endif |
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852 default: |
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853 return false; |
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|
854 } |
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855 return false; |
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|
856 } |
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|
857 |
8616
d343737786fe
changed profiling of exceptions so that the ExceptionSeen flag also works without GRAALVM
Christian Haeubl <haeubl@ssw.jku.at>
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diff
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|
858 #ifdef GRAAL |
14518 | 859 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps) { |
4568
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better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
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|
860 if (!ProfileTraps) return 0; |
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
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|
861 |
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
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|
862 // Assume that up to 30% of the possibly trapping BCIs with no MDP will need to allocate one. |
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
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parents:
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diff
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|
863 return MIN2(empty_bc_count, MAX2(4, (empty_bc_count * 30) / 100)); |
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
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diff
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|
864 } |
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better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4439
diff
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|
865 #else |
14500
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|
866 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps) { |
0 | 867 if (ProfileTraps) { |
868 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
869 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
870 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
871 int one_percent_of_data | |
872 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
873 if (extra_data_count < one_percent_of_data) | |
874 extra_data_count = one_percent_of_data; | |
875 if (extra_data_count > empty_bc_count) | |
876 extra_data_count = empty_bc_count; // no need for more | |
14500
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|
877 |
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|
878 // Make sure we have a minimum number of extra data slots to |
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roland
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diff
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|
879 // allocate SpeculativeTrapData entries. We would want to have one |
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880 // entry per compilation that inlines this method and for which |
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881 // some type speculation assumption fails. So the room we need for |
fdad2932c73f
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|
882 // the SpeculativeTrapData entries doesn't directly depend on the |
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roland
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|
883 // size of the method. Because it's hard to estimate, we reserve |
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|
884 // space for an arbitrary number of entries. |
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roland
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|
885 int spec_data_count = (needs_speculative_traps ? SpecTrapLimitExtraEntries : 0) * |
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|
886 (SpeculativeTrapData::static_cell_count() + DataLayout::header_size_in_cells()); |
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|
887 |
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roland
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|
888 return MAX2(extra_data_count, spec_data_count); |
0 | 889 } else { |
890 return 0; | |
891 } | |
892 } | |
4568
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4439
diff
changeset
|
893 #endif |
0 | 894 |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
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|
895 // Compute the size of the MethodData* necessary to store |
0 | 896 // profiling information about a given method. Size is in bytes. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
897 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 898 int data_size = 0; |
899 BytecodeStream stream(method); | |
900 Bytecodes::Code c; | |
901 int empty_bc_count = 0; // number of bytecodes lacking data | |
14500
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roland
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diff
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|
902 bool needs_speculative_traps = false; |
0 | 903 while ((c = stream.next()) >= 0) { |
904 int size_in_bytes = compute_data_size(&stream); | |
905 data_size += size_in_bytes; | |
13181
389d40d7d99f
fixed bug in MethodData and added assertion that precomputed size == initialized size
Doug Simon <doug.simon@oracle.com>
parents:
13108
diff
changeset
|
906 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
14500
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roland
parents:
14435
diff
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|
907 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 908 } |
909 int object_size = in_bytes(data_offset()) + data_size; | |
910 | |
911 // Add some extra DataLayout cells (at least one) to track stray traps. | |
14500
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|
912 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
0 | 913 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); |
914 | |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
915 // Add a cell to record information about modified arguments. |
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
916 int arg_size = method->size_of_parameters(); |
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
917 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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10376
diff
changeset
|
918 |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
919 // Reserve room for an area of the MDO dedicated to profiling of |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
920 // parameters |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
921 int args_cell = ParametersTypeData::compute_cell_count(method()); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
922 if (args_cell > 0) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
923 object_size += DataLayout::compute_size_in_bytes(args_cell); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
924 } |
0 | 925 return object_size; |
926 } | |
927 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
928 // Compute the size of the MethodData* necessary to store |
0 | 929 // profiling information about a given method. Size is in words |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
930 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 931 int byte_size = compute_allocation_size_in_bytes(method); |
932 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
933 return align_object_size(word_size); | |
934 } | |
935 | |
936 // Initialize an individual data segment. Returns the size of | |
937 // the segment in bytes. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
938 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 939 int data_index) { |
8883 | 940 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 941 return 0; |
942 #else | |
0 | 943 int cell_count = -1; |
944 int tag = DataLayout::no_tag; | |
945 DataLayout* data_layout = data_layout_at(data_index); | |
946 Bytecodes::Code c = stream->code(); | |
947 switch (c) { | |
948 case Bytecodes::_checkcast: | |
949 case Bytecodes::_instanceof: | |
950 case Bytecodes::_aastore: | |
951 if (TypeProfileCasts) { | |
952 cell_count = ReceiverTypeData::static_cell_count(); | |
953 tag = DataLayout::receiver_type_data_tag; | |
954 } else { | |
955 cell_count = BitData::static_cell_count(); | |
956 tag = DataLayout::bit_data_tag; | |
957 } | |
958 break; | |
959 case Bytecodes::_invokespecial: | |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
960 case Bytecodes::_invokestatic: { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
961 int counter_data_cell_count = CounterData::static_cell_count(); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
962 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
963 profile_return_for_invoke(stream->method(), stream->bci())) { |
12875
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
964 cell_count = CallTypeData::compute_cell_count(stream); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
965 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
966 cell_count = counter_data_cell_count; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
967 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
968 if (cell_count > counter_data_cell_count) { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
969 tag = DataLayout::call_type_data_tag; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
970 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
971 tag = DataLayout::counter_data_tag; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
972 } |
0 | 973 break; |
12875
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
974 } |
0 | 975 case Bytecodes::_goto: |
976 case Bytecodes::_goto_w: | |
977 case Bytecodes::_jsr: | |
978 case Bytecodes::_jsr_w: | |
979 cell_count = JumpData::static_cell_count(); | |
980 tag = DataLayout::jump_data_tag; | |
981 break; | |
982 case Bytecodes::_invokevirtual: | |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
983 case Bytecodes::_invokeinterface: { |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
984 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
985 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
986 profile_return_for_invoke(stream->method(), stream->bci())) { |
12875
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
987 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
988 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
989 cell_count = virtual_call_data_cell_count; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
990 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
991 if (cell_count > virtual_call_data_cell_count) { |
d13d7aba8c12
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parents:
10376
diff
changeset
|
992 tag = DataLayout::virtual_call_type_data_tag; |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
993 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
994 tag = DataLayout::virtual_call_data_tag; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
995 } |
0 | 996 break; |
12875
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roland
parents:
10376
diff
changeset
|
997 } |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
998 case Bytecodes::_invokedynamic: { |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
196
diff
changeset
|
999 // %%% should make a type profile for any invokedynamic that takes a ref argument |
12875
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roland
parents:
10376
diff
changeset
|
1000 int counter_data_cell_count = CounterData::static_cell_count(); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1001 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1002 profile_return_for_invoke(stream->method(), stream->bci())) { |
12875
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10376
diff
changeset
|
1003 cell_count = CallTypeData::compute_cell_count(stream); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
1004 } else { |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
1005 cell_count = counter_data_cell_count; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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10376
diff
changeset
|
1006 } |
d13d7aba8c12
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diff
changeset
|
1007 if (cell_count > counter_data_cell_count) { |
d13d7aba8c12
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diff
changeset
|
1008 tag = DataLayout::call_type_data_tag; |
d13d7aba8c12
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roland
parents:
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diff
changeset
|
1009 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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diff
changeset
|
1010 tag = DataLayout::counter_data_tag; |
d13d7aba8c12
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diff
changeset
|
1011 } |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
196
diff
changeset
|
1012 break; |
12875
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changeset
|
1013 } |
0 | 1014 case Bytecodes::_ret: |
1015 cell_count = RetData::static_cell_count(); | |
1016 tag = DataLayout::ret_data_tag; | |
1017 break; | |
1018 case Bytecodes::_ifeq: | |
1019 case Bytecodes::_ifne: | |
1020 case Bytecodes::_iflt: | |
1021 case Bytecodes::_ifge: | |
1022 case Bytecodes::_ifgt: | |
1023 case Bytecodes::_ifle: | |
1024 case Bytecodes::_if_icmpeq: | |
1025 case Bytecodes::_if_icmpne: | |
1026 case Bytecodes::_if_icmplt: | |
1027 case Bytecodes::_if_icmpge: | |
1028 case Bytecodes::_if_icmpgt: | |
1029 case Bytecodes::_if_icmple: | |
1030 case Bytecodes::_if_acmpeq: | |
1031 case Bytecodes::_if_acmpne: | |
1032 case Bytecodes::_ifnull: | |
1033 case Bytecodes::_ifnonnull: | |
1034 cell_count = BranchData::static_cell_count(); | |
1035 tag = DataLayout::branch_data_tag; | |
1036 break; | |
1037 case Bytecodes::_lookupswitch: | |
1038 case Bytecodes::_tableswitch: | |
1039 cell_count = MultiBranchData::compute_cell_count(stream); | |
1040 tag = DataLayout::multi_branch_data_tag; | |
1041 break; | |
1042 } | |
1043 assert(tag == DataLayout::multi_branch_data_tag || | |
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1044 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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1045 (tag == DataLayout::call_type_data_tag || |
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1046 tag == DataLayout::counter_data_tag || |
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1047 tag == DataLayout::virtual_call_type_data_tag || |
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1048 tag == DataLayout::virtual_call_data_tag)) || |
0 | 1049 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
1050 if (cell_count >= 0) { | |
1051 assert(tag != DataLayout::no_tag, "bad tag"); | |
1052 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
1053 data_layout->initialize(tag, stream->bci(), cell_count); | |
1054 return DataLayout::compute_size_in_bytes(cell_count); | |
1055 } else { | |
1056 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
1057 return 0; | |
1058 } | |
8860 | 1059 #endif |
0 | 1060 } |
1061 | |
1062 // Get the data at an arbitrary (sort of) data index. | |
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1063 ProfileData* MethodData::data_at(int data_index) const { |
0 | 1064 if (out_of_bounds(data_index)) { |
1065 return NULL; | |
1066 } | |
1067 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 1068 return data_layout->data_in(); |
1069 } | |
0 | 1070 |
941 | 1071 ProfileData* DataLayout::data_in() { |
1072 switch (tag()) { | |
0 | 1073 case DataLayout::no_tag: |
1074 default: | |
1075 ShouldNotReachHere(); | |
1076 return NULL; | |
1077 case DataLayout::bit_data_tag: | |
941 | 1078 return new BitData(this); |
0 | 1079 case DataLayout::counter_data_tag: |
941 | 1080 return new CounterData(this); |
0 | 1081 case DataLayout::jump_data_tag: |
941 | 1082 return new JumpData(this); |
0 | 1083 case DataLayout::receiver_type_data_tag: |
941 | 1084 return new ReceiverTypeData(this); |
0 | 1085 case DataLayout::virtual_call_data_tag: |
941 | 1086 return new VirtualCallData(this); |
0 | 1087 case DataLayout::ret_data_tag: |
941 | 1088 return new RetData(this); |
0 | 1089 case DataLayout::branch_data_tag: |
941 | 1090 return new BranchData(this); |
0 | 1091 case DataLayout::multi_branch_data_tag: |
941 | 1092 return new MultiBranchData(this); |
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1093 case DataLayout::arg_info_data_tag: |
941 | 1094 return new ArgInfoData(this); |
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1095 case DataLayout::call_type_data_tag: |
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1096 return new CallTypeData(this); |
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1097 case DataLayout::virtual_call_type_data_tag: |
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1098 return new VirtualCallTypeData(this); |
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1099 case DataLayout::parameters_type_data_tag: |
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1100 return new ParametersTypeData(this); |
0 | 1101 }; |
1102 } | |
1103 | |
1104 // Iteration over data. | |
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1105 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 1106 int current_index = dp_to_di(current->dp()); |
1107 int next_index = current_index + current->size_in_bytes(); | |
1108 ProfileData* next = data_at(next_index); | |
1109 return next; | |
1110 } | |
1111 | |
1112 // Give each of the data entries a chance to perform specific | |
1113 // data initialization. | |
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1114 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 1115 ResourceMark rm; |
1116 ProfileData* data; | |
1117 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
1118 stream->set_start(data->bci()); | |
1119 stream->next(); | |
1120 data->post_initialize(stream, this); | |
1121 } | |
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1122 if (_parameters_type_data_di != -1) { |
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1123 parameters_type_data()->post_initialize(NULL, this); |
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1124 } |
0 | 1125 } |
1126 | |
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1127 // Initialize the MethodData* corresponding to a given method. |
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1128 MethodData::MethodData(methodHandle method, int size, TRAPS) |
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1129 : _extra_data_lock(Monitor::leaf, "MDO extra data lock") { |
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1130 // Set the method back-pointer. |
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1131 _method = method(); |
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1132 initialize(); |
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1133 } |
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1134 |
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1135 void MethodData::initialize(bool for_reprofile) { |
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1136 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 1137 ResourceMark rm; |
1783 | 1138 |
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1139 init(); |
0 | 1140 set_creation_mileage(mileage_of(method())); |
1141 | |
1142 // Go through the bytecodes and allocate and initialize the | |
1143 // corresponding data cells. | |
1144 int data_size = 0; | |
1145 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1146 _data[0] = 0; // apparently not set below. |
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1147 BytecodeStream stream(method()); |
0 | 1148 Bytecodes::Code c; |
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1149 bool needs_speculative_traps = false; |
0 | 1150 while ((c = stream.next()) >= 0) { |
1151 int size_in_bytes = initialize_data(&stream, data_size); | |
1152 data_size += size_in_bytes; | |
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1153 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
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1154 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 1155 } |
1156 _data_size = data_size; | |
1157 int object_size = in_bytes(data_offset()) + data_size; | |
1158 | |
1159 // Add some extra DataLayout cells (at least one) to track stray traps. | |
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1160 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
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1161 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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1162 |
14518 | 1163 //#ifdef GRAAL |
1164 // if (for_reprofile) { | |
1165 // // Clear out extra data | |
1166 // Copy::zero_to_bytes((HeapWord*) extra_data_base(), extra_size); | |
1167 // } | |
1168 //#endif | |
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1169 // Let's zero the space for the extra data |
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1170 Copy::zero_to_bytes(((address)_data) + data_size, extra_size); |
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1171 |
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1172 // Add a cell to record information about modified arguments. |
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1173 // Set up _args_modified array after traps cells so that |
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1174 // the code for traps cells works. |
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1175 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1176 |
8615 | 1177 int arg_size = method()->size_of_parameters(); |
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1178 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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1179 |
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1180 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1181 object_size += extra_size + arg_data_size; |
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1182 |
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1183 int parms_cell = ParametersTypeData::compute_cell_count(method()); |
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1184 // If we are profiling parameters, we reserver an area near the end |
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1185 // of the MDO after the slots for bytecodes (because there's no bci |
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|
1186 // for method entry so they don't fit with the framework for the |
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1187 // profiling of bytecodes). We store the offset within the MDO of |
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1188 // this area (or -1 if no parameter is profiled) |
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1189 if (parms_cell > 0) { |
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1190 object_size += DataLayout::compute_size_in_bytes(parms_cell); |
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1191 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1192 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
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1193 dp->initialize(DataLayout::parameters_type_data_tag, 0, parms_cell); |
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1194 } else { |
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1195 _parameters_type_data_di = -1; |
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|
1196 } |
0 | 1197 |
1198 // Set an initial hint. Don't use set_hint_di() because | |
1199 // first_di() may be out of bounds if data_size is 0. | |
1200 // In that situation, _hint_di is never used, but at | |
1201 // least well-defined. | |
1202 _hint_di = first_di(); | |
1203 | |
1204 post_initialize(&stream); | |
1205 | |
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1206 assert(object_size == compute_allocation_size_in_bytes(methodHandle(_method)), "MethodData: computed size != initialized size"); |
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1207 set_size(object_size); |
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1208 } |
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1209 |
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1210 void MethodData::init() { |
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1211 _invocation_counter.init(); |
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1212 _backedge_counter.init(); |
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1213 _invocation_counter_start = 0; |
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1214 _backedge_counter_start = 0; |
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1215 _num_loops = 0; |
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1216 _num_blocks = 0; |
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1217 _highest_comp_level = 0; |
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1218 _highest_osr_comp_level = 0; |
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1219 _would_profile = true; |
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1220 #ifdef GRAAL |
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1221 _graal_node_count = 0; |
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1222 #endif |
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1223 |
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1224 // Initialize flags and trap history. |
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1225 _nof_decompiles = 0; |
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1226 _nof_overflow_recompiles = 0; |
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1227 _nof_overflow_traps = 0; |
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1228 clear_escape_info(); |
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1229 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1230 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1231 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1232 } |
1233 | |
1234 // Get a measure of how much mileage the method has on it. | |
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1235 int MethodData::mileage_of(Method* method) { |
0 | 1236 int mileage = 0; |
1783 | 1237 if (TieredCompilation) { |
1238 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1239 } else { | |
1240 int iic = method->interpreter_invocation_count(); | |
1241 if (mileage < iic) mileage = iic; | |
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1242 MethodCounters* mcs = method->method_counters(); |
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1243 if (mcs != NULL) { |
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1244 InvocationCounter* ic = mcs->invocation_counter(); |
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1245 InvocationCounter* bc = mcs->backedge_counter(); |
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1246 int icval = ic->count(); |
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1247 if (ic->carry()) icval += CompileThreshold; |
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1248 if (mileage < icval) mileage = icval; |
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1249 int bcval = bc->count(); |
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1250 if (bc->carry()) bcval += CompileThreshold; |
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1251 if (mileage < bcval) mileage = bcval; |
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1252 } |
1783 | 1253 } |
0 | 1254 return mileage; |
1255 } | |
1256 | |
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1257 bool MethodData::is_mature() const { |
1783 | 1258 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1259 } |
1260 | |
1261 // Translate a bci to its corresponding data index (di). | |
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1262 address MethodData::bci_to_dp(int bci) { |
0 | 1263 ResourceMark rm; |
1264 ProfileData* data = data_before(bci); | |
1265 ProfileData* prev = NULL; | |
1266 for ( ; is_valid(data); data = next_data(data)) { | |
1267 if (data->bci() >= bci) { | |
1268 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1269 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1270 return data->dp(); | |
1271 } | |
1272 prev = data; | |
1273 } | |
1274 return (address)limit_data_position(); | |
1275 } | |
1276 | |
1277 // Translate a bci to its corresponding data, or NULL. | |
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1278 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1279 ProfileData* data = data_before(bci); |
1280 for ( ; is_valid(data); data = next_data(data)) { | |
1281 if (data->bci() == bci) { | |
1282 set_hint_di(dp_to_di(data->dp())); | |
1283 return data; | |
1284 } else if (data->bci() > bci) { | |
1285 break; | |
1286 } | |
1287 } | |
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1288 return bci_to_extra_data(bci, NULL, false); |
0 | 1289 } |
1290 | |
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1291 DataLayout* MethodData::next_extra(DataLayout* dp) { |
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1292 int nb_cells = 0; |
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1293 switch(dp->tag()) { |
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1294 case DataLayout::bit_data_tag: |
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1295 case DataLayout::no_tag: |
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1296 nb_cells = BitData::static_cell_count(); |
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1297 break; |
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1298 case DataLayout::speculative_trap_data_tag: |
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1299 nb_cells = SpeculativeTrapData::static_cell_count(); |
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1300 break; |
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1301 default: |
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1302 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1303 } |
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1304 return (DataLayout*)((address)dp + DataLayout::compute_size_in_bytes(nb_cells)); |
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1305 } |
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1306 |
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1307 ProfileData* MethodData::bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent) { |
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1308 DataLayout* end = extra_data_limit(); |
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1309 |
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1310 for (;; dp = next_extra(dp)) { |
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1311 assert(dp < end, "moved past end of extra data"); |
0 | 1312 // No need for "OrderAccess::load_acquire" ops, |
1313 // since the data structure is monotonic. | |
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1314 switch(dp->tag()) { |
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1315 case DataLayout::no_tag: |
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1316 return NULL; |
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1317 case DataLayout::arg_info_data_tag: |
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1318 dp = end; |
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1319 return NULL; // ArgInfoData is at the end of extra data section. |
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1320 case DataLayout::bit_data_tag: |
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1321 if (m == NULL && dp->bci() == bci) { |
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1322 return new BitData(dp); |
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1323 } |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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|
1324 break; |
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1325 case DataLayout::speculative_trap_data_tag: |
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1326 if (m != NULL) { |
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1327 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1328 // data->method() may be null in case of a concurrent |
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1329 // allocation. Maybe it's for the same method. Try to use that |
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1330 // entry in that case. |
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1331 if (dp->bci() == bci) { |
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1332 if (data->method() == NULL) { |
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1333 assert(concurrent, "impossible because no concurrent allocation"); |
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1334 return NULL; |
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1335 } else if (data->method() == m) { |
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1336 return data; |
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|
1337 } |
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1338 } |
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1339 } |
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1340 break; |
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|
1341 default: |
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1342 fatal(err_msg("unexpected tag %d", dp->tag())); |
0 | 1343 } |
1344 } | |
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1345 return NULL; |
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|
1346 } |
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1347 |
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|
1348 |
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1349 // Translate a bci to its corresponding extra data, or NULL. |
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1350 ProfileData* MethodData::bci_to_extra_data(int bci, Method* m, bool create_if_missing) { |
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1351 // This code assumes an entry for a SpeculativeTrapData is 2 cells |
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1352 assert(2*DataLayout::compute_size_in_bytes(BitData::static_cell_count()) == |
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1353 DataLayout::compute_size_in_bytes(SpeculativeTrapData::static_cell_count()), |
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1354 "code needs to be adjusted"); |
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1355 |
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1356 DataLayout* dp = extra_data_base(); |
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1357 DataLayout* end = extra_data_limit(); |
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1358 |
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1359 // Allocation in the extra data space has to be atomic because not |
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1360 // all entries have the same size and non atomic concurrent |
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1361 // allocation would result in a corrupted extra data space. |
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1362 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, true); |
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1363 if (result != NULL) { |
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1364 return result; |
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1365 } |
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1366 |
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1367 if (create_if_missing && dp < end) { |
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1368 MutexLocker ml(&_extra_data_lock); |
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8035841: assert(dp_src->tag() == dp_dst->tag()) failed: should be same tags 1 != 0 at ciMethodData.cpp:90
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1369 // Check again now that we have the lock. Another thread may |
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1370 // have added extra data entries. |
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1371 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, false); |
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1372 if (result != NULL || dp >= end) { |
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1373 return result; |
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1374 } |
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1375 |
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1376 assert(dp->tag() == DataLayout::no_tag || (dp->tag() == DataLayout::speculative_trap_data_tag && m != NULL), "should be free"); |
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1377 assert(next_extra(dp)->tag() == DataLayout::no_tag || next_extra(dp)->tag() == DataLayout::arg_info_data_tag, "should be free or arg info"); |
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1378 u1 tag = m == NULL ? DataLayout::bit_data_tag : DataLayout::speculative_trap_data_tag; |
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1379 // SpeculativeTrapData is 2 slots. Make sure we have room. |
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1380 if (m != NULL && next_extra(dp)->tag() != DataLayout::no_tag) { |
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1381 return NULL; |
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1382 } |
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1383 DataLayout temp; |
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1384 temp.initialize(tag, bci, 0); |
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1385 |
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1386 dp->set_header(temp.header()); |
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1387 assert(dp->tag() == tag, "sane"); |
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1388 assert(dp->bci() == bci, "no concurrent allocation"); |
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1389 if (tag == DataLayout::bit_data_tag) { |
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1390 return new BitData(dp); |
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1391 } else { |
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1392 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1393 data->set_method(m); |
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1394 return data; |
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1395 } |
0 | 1396 } |
1397 return NULL; | |
1398 } | |
1399 | |
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1400 ArgInfoData *MethodData::arg_info() { |
45
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1401 DataLayout* dp = extra_data_base(); |
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1402 DataLayout* end = extra_data_limit(); |
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1403 for (; dp < end; dp = next_extra(dp)) { |
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1404 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1405 return new ArgInfoData(dp); |
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|
1406 } |
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|
1407 return NULL; |
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|
1408 } |
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|
1409 |
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1410 // Printing |
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1411 |
0 | 1412 #ifndef PRODUCT |
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1413 |
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1414 void MethodData::print_on(outputStream* st) const { |
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1415 assert(is_methodData(), "should be method data"); |
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1416 st->print("method data for "); |
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1417 method()->print_value_on(st); |
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1418 st->cr(); |
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|
1419 print_data_on(st); |
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|
1420 } |
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1421 |
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1422 #endif //PRODUCT |
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1423 |
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1424 void MethodData::print_value_on(outputStream* st) const { |
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1425 assert(is_methodData(), "should be method data"); |
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|
1426 st->print("method data for "); |
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|
1427 method()->print_value_on(st); |
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|
1428 } |
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|
1429 |
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|
1430 #ifndef PRODUCT |
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1431 void MethodData::print_data_on(outputStream* st) const { |
0 | 1432 ResourceMark rm; |
1433 ProfileData* data = first_data(); | |
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|
1434 if (_parameters_type_data_di != -1) { |
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|
1435 parameters_type_data()->print_data_on(st); |
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|
1436 } |
0 | 1437 for ( ; is_valid(data); data = next_data(data)) { |
1438 st->print("%d", dp_to_di(data->dp())); | |
1439 st->fill_to(6); | |
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1440 data->print_data_on(st, this); |
0 | 1441 } |
45
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|
1442 st->print_cr("--- Extra data:"); |
0 | 1443 DataLayout* dp = extra_data_base(); |
1444 DataLayout* end = extra_data_limit(); | |
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1445 for (;; dp = next_extra(dp)) { |
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1446 assert(dp < end, "moved past end of extra data"); |
0 | 1447 // No need for "OrderAccess::load_acquire" ops, |
1448 // since the data structure is monotonic. | |
14500
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|
1449 switch(dp->tag()) { |
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|
1450 case DataLayout::no_tag: |
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|
1451 continue; |
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|
1452 case DataLayout::bit_data_tag: |
45
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|
1453 data = new BitData(dp); |
14500
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|
1454 break; |
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|
1455 case DataLayout::speculative_trap_data_tag: |
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1456 data = new SpeculativeTrapData(dp); |
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|
1457 break; |
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|
1458 case DataLayout::arg_info_data_tag: |
45
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|
1459 data = new ArgInfoData(dp); |
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|
1460 dp = end; // ArgInfoData is at the end of extra data section. |
14500
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|
1461 break; |
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|
1462 default: |
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|
1463 fatal(err_msg("unexpected tag %d", dp->tag())); |
45
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|
1464 } |
0 | 1465 st->print("%d", dp_to_di(data->dp())); |
1466 st->fill_to(6); | |
1467 data->print_data_on(st); | |
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|
1468 if (dp >= end) return; |
0 | 1469 } |
1470 } | |
1471 #endif | |
1472 | |
7956 | 1473 #if INCLUDE_SERVICES |
1474 // Size Statistics | |
1475 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1476 int n = sz->count(this); | |
1477 sz->_method_data_bytes += n; | |
1478 sz->_method_all_bytes += n; | |
1479 sz->_rw_bytes += n; | |
1480 } | |
1481 #endif // INCLUDE_SERVICES | |
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|
1482 |
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|
1483 // Verification |
da91efe96a93
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|
1484 |
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|
1485 void MethodData::verify_on(outputStream* st) { |
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|
1486 guarantee(is_methodData(), "object must be method data"); |
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|
1487 // guarantee(m->is_perm(), "should be in permspace"); |
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|
1488 this->verify_data_on(st); |
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|
1489 } |
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|
1490 |
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|
1491 void MethodData::verify_data_on(outputStream* st) { |
0 | 1492 NEEDS_CLEANUP; |
1493 // not yet implemented. | |
1494 } | |
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|
1495 |
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|
1496 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
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|
1497 if (m->is_compiled_lambda_form()) { |
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|
1498 return true; |
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|
1499 } |
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|
1500 |
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|
1501 Bytecode_invoke inv(m , bci); |
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|
1502 return inv.is_invokedynamic() || inv.is_invokehandle(); |
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|
1503 } |
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|
1504 |
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|
1505 int MethodData::profile_arguments_flag() { |
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|
1506 return TypeProfileLevel % 10; |
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|
1507 } |
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|
1508 |
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|
1509 bool MethodData::profile_arguments() { |
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|
1510 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
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|
1511 } |
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|
1512 |
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|
1513 bool MethodData::profile_arguments_jsr292_only() { |
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|
1514 return profile_arguments_flag() == type_profile_jsr292; |
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|
1515 } |
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|
1516 |
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|
1517 bool MethodData::profile_all_arguments() { |
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|
1518 return profile_arguments_flag() == type_profile_all; |
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|
1519 } |
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|
1520 |
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|
1521 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
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|
1522 if (!profile_arguments()) { |
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|
1523 return false; |
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|
1524 } |
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|
1525 |
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|
1526 if (profile_all_arguments()) { |
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|
1527 return true; |
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|
1528 } |
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|
1529 |
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|
1530 assert(profile_arguments_jsr292_only(), "inconsistent"); |
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|
1531 return profile_jsr292(m, bci); |
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|
1532 } |
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|
1533 |
12882
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|
1534 int MethodData::profile_return_flag() { |
12962
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|
1535 return (TypeProfileLevel % 100) / 10; |
12882
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|
1536 } |
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|
1537 |
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|
1538 bool MethodData::profile_return() { |
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|
1539 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
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|
1540 } |
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|
1541 |
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|
1542 bool MethodData::profile_return_jsr292_only() { |
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|
1543 return profile_return_flag() == type_profile_jsr292; |
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diff
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|
1544 } |
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|
1545 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1546 bool MethodData::profile_all_return() { |
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|
1547 return profile_return_flag() == type_profile_all; |
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diff
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|
1548 } |
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roland
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|
1549 |
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|
1550 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
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|
1551 if (!profile_return()) { |
ce0cc25bc5e2
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|
1552 return false; |
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|
1553 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1554 |
ce0cc25bc5e2
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|
1555 if (profile_all_return()) { |
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|
1556 return true; |
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|
1557 } |
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|
1558 |
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|
1559 assert(profile_return_jsr292_only(), "inconsistent"); |
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|
1560 return profile_jsr292(m, bci); |
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|
1561 } |
12962
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|
1562 |
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|
1563 int MethodData::profile_parameters_flag() { |
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diff
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|
1564 return TypeProfileLevel / 100; |
5ccbab1c69f3
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|
1565 } |
5ccbab1c69f3
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|
1566 |
5ccbab1c69f3
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diff
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|
1567 bool MethodData::profile_parameters() { |
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|
1568 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; |
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|
1569 } |
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|
1570 |
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|
1571 bool MethodData::profile_parameters_jsr292_only() { |
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|
1572 return profile_parameters_flag() == type_profile_jsr292; |
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|
1573 } |
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|
1574 |
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|
1575 bool MethodData::profile_all_parameters() { |
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|
1576 return profile_parameters_flag() == type_profile_all; |
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|
1577 } |
5ccbab1c69f3
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|
1578 |
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|
1579 bool MethodData::profile_parameters_for_method(methodHandle m) { |
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|
1580 if (!profile_parameters()) { |
5ccbab1c69f3
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|
1581 return false; |
5ccbab1c69f3
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diff
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|
1582 } |
5ccbab1c69f3
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|
1583 |
5ccbab1c69f3
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|
1584 if (profile_all_parameters()) { |
5ccbab1c69f3
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|
1585 return true; |
5ccbab1c69f3
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diff
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|
1586 } |
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|
1587 |
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|
1588 assert(profile_parameters_jsr292_only(), "inconsistent"); |
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|
1589 return m->is_compiled_lambda_form(); |
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|
1590 } |
14500
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|
1591 |
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1592 void MethodData::clean_extra_data_helper(DataLayout* dp, int shift, bool reset) { |
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|
1593 if (shift == 0) { |
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|
1594 return; |
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|
1595 } |
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|
1596 if (!reset) { |
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|
1597 // Move all cells of trap entry at dp left by "shift" cells |
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1598 intptr_t* start = (intptr_t*)dp; |
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1599 intptr_t* end = (intptr_t*)next_extra(dp); |
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1600 for (intptr_t* ptr = start; ptr < end; ptr++) { |
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|
1601 *(ptr-shift) = *ptr; |
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|
1602 } |
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|
1603 } else { |
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|
1604 // Reset "shift" cells stopping at dp |
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|
1605 intptr_t* start = ((intptr_t*)dp) - shift; |
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|
1606 intptr_t* end = (intptr_t*)dp; |
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|
1607 for (intptr_t* ptr = start; ptr < end; ptr++) { |
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|
1608 *ptr = 0; |
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|
1609 } |
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|
1610 } |
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|
1611 } |
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|
1612 |
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|
1613 // Remove SpeculativeTrapData entries that reference an unloaded |
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|
1614 // method |
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|
1615 void MethodData::clean_extra_data(BoolObjectClosure* is_alive) { |
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|
1616 DataLayout* dp = extra_data_base(); |
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|
1617 DataLayout* end = extra_data_limit(); |
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|
1618 |
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|
1619 int shift = 0; |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1620 for (; dp < end; dp = next_extra(dp)) { |
fdad2932c73f
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|
1621 switch(dp->tag()) { |
fdad2932c73f
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|
1622 case DataLayout::speculative_trap_data_tag: { |
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|
1623 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1624 Method* m = data->method(); |
fdad2932c73f
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|
1625 assert(m != NULL, "should have a method"); |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1626 if (!m->method_holder()->is_loader_alive(is_alive)) { |
fdad2932c73f
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|
1627 // "shift" accumulates the number of cells for dead |
fdad2932c73f
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|
1628 // SpeculativeTrapData entries that have been seen so |
fdad2932c73f
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|
1629 // far. Following entries must be shifted left by that many |
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|
1630 // cells to remove the dead SpeculativeTrapData entries. |
fdad2932c73f
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|
1631 shift += (int)((intptr_t*)next_extra(dp) - (intptr_t*)dp); |
fdad2932c73f
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|
1632 } else { |
fdad2932c73f
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|
1633 // Shift this entry left if it follows dead |
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|
1634 // SpeculativeTrapData entries |
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|
1635 clean_extra_data_helper(dp, shift); |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1636 } |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1637 break; |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1638 } |
fdad2932c73f
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|
1639 case DataLayout::bit_data_tag: |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1640 // Shift this entry left if it follows dead SpeculativeTrapData |
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|
1641 // entries |
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|
1642 clean_extra_data_helper(dp, shift); |
fdad2932c73f
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|
1643 continue; |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1644 case DataLayout::no_tag: |
fdad2932c73f
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|
1645 case DataLayout::arg_info_data_tag: |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1646 // We are at end of the live trap entries. The previous "shift" |
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|
1647 // cells contain entries that are either dead or were shifted |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1648 // left. They need to be reset to no_tag |
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|
1649 clean_extra_data_helper(dp, shift, true); |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1650 return; |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1651 default: |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1652 fatal(err_msg("unexpected tag %d", dp->tag())); |
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|
1653 } |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
changeset
|
1654 } |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
changeset
|
1655 } |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1656 |
fdad2932c73f
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|
1657 // Verify there's no unloaded method referenced by a |
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|
1658 // SpeculativeTrapData entry |
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|
1659 void MethodData::verify_extra_data_clean(BoolObjectClosure* is_alive) { |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1660 #ifdef ASSERT |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1661 DataLayout* dp = extra_data_base(); |
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|
1662 DataLayout* end = extra_data_limit(); |
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|
1663 |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1664 for (; dp < end; dp = next_extra(dp)) { |
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diff
changeset
|
1665 switch(dp->tag()) { |
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|
1666 case DataLayout::speculative_trap_data_tag: { |
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|
1667 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1668 Method* m = data->method(); |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1669 assert(m != NULL && m->method_holder()->is_loader_alive(is_alive), "Method should exist"); |
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1670 break; |
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1671 } |
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1672 case DataLayout::bit_data_tag: |
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1673 continue; |
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1674 case DataLayout::no_tag: |
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1675 case DataLayout::arg_info_data_tag: |
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1676 return; |
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1677 default: |
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1678 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1679 } |
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1680 } |
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1681 #endif |
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1682 } |
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1683 |
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1684 void MethodData::clean_method_data(BoolObjectClosure* is_alive) { |
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1685 for (ProfileData* data = first_data(); |
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1686 is_valid(data); |
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1687 data = next_data(data)) { |
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1688 data->clean_weak_klass_links(is_alive); |
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1689 } |
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1690 ParametersTypeData* parameters = parameters_type_data(); |
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1691 if (parameters != NULL) { |
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1692 parameters->clean_weak_klass_links(is_alive); |
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1693 } |
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1694 |
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1695 clean_extra_data(is_alive); |
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1696 verify_extra_data_clean(is_alive); |
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1697 } |