Mercurial > hg > truffle
annotate src/share/vm/opto/bytecodeInfo.cpp @ 41:874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
Summary: java constructors should be inlined to be able scalar replace a new object
Reviewed-by: rasbold
author | kvn |
---|---|
date | Fri, 07 Mar 2008 11:09:13 -0800 |
parents | a61af66fc99e |
children | d1605aabd0a1 524eca34ea76 |
rev | line source |
---|---|
0 | 1 /* |
2 * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_bytecodeInfo.cpp.incl" | |
27 | |
28 // These variables are declared in parse1.cpp | |
29 extern int explicit_null_checks_inserted; | |
30 extern int explicit_null_checks_elided; | |
31 extern int explicit_null_checks_inserted_old; | |
32 extern int explicit_null_checks_elided_old; | |
33 extern int nodes_created_old; | |
34 extern int nodes_created; | |
35 extern int methods_parsed_old; | |
36 extern int methods_parsed; | |
37 extern int methods_seen; | |
38 extern int methods_seen_old; | |
39 | |
40 | |
41 //============================================================================= | |
42 //------------------------------InlineTree------------------------------------- | |
43 InlineTree::InlineTree( Compile* c, const InlineTree *caller_tree, ciMethod* callee, JVMState* caller_jvms, int caller_bci, float site_invoke_ratio ) | |
44 : C(c), _caller_jvms(caller_jvms), | |
45 _caller_tree((InlineTree*)caller_tree), | |
46 _method(callee), _site_invoke_ratio(site_invoke_ratio), | |
47 _count_inline_bcs(method()->code_size()) { | |
48 NOT_PRODUCT(_count_inlines = 0;) | |
49 if (_caller_jvms != NULL) { | |
50 // Keep a private copy of the caller_jvms: | |
51 _caller_jvms = new (C) JVMState(caller_jvms->method(), caller_tree->caller_jvms()); | |
52 _caller_jvms->set_bci(caller_jvms->bci()); | |
53 } | |
54 assert(_caller_jvms->same_calls_as(caller_jvms), "consistent JVMS"); | |
55 assert((caller_tree == NULL ? 0 : caller_tree->inline_depth() + 1) == inline_depth(), "correct (redundant) depth parameter"); | |
56 assert(caller_bci == this->caller_bci(), "correct (redundant) bci parameter"); | |
57 if (UseOldInlining) { | |
58 // Update hierarchical counts, count_inline_bcs() and count_inlines() | |
59 InlineTree *caller = (InlineTree *)caller_tree; | |
60 for( ; caller != NULL; caller = ((InlineTree *)(caller->caller_tree())) ) { | |
61 caller->_count_inline_bcs += count_inline_bcs(); | |
62 NOT_PRODUCT(caller->_count_inlines++;) | |
63 } | |
64 } | |
65 } | |
66 | |
67 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, float site_invoke_ratio) | |
68 : C(c), _caller_jvms(caller_jvms), _caller_tree(NULL), | |
69 _method(callee_method), _site_invoke_ratio(site_invoke_ratio), | |
70 _count_inline_bcs(method()->code_size()) { | |
71 NOT_PRODUCT(_count_inlines = 0;) | |
72 assert(!UseOldInlining, "do not use for old stuff"); | |
73 } | |
74 | |
75 | |
76 | |
77 static void print_indent(int depth) { | |
78 tty->print(" "); | |
79 for (int i = depth; i != 0; --i) tty->print(" "); | |
80 } | |
81 | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
82 static bool is_init_with_ea(ciMethod* callee_method, |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
83 ciMethod* caller_method, Compile* C) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
84 // True when EA is ON and a java constructor is called or |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
85 // a super constructor is called from an inlined java constructor. |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
86 return DoEscapeAnalysis && EliminateAllocations && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
87 ( callee_method->is_initializer() || |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
88 (caller_method->is_initializer() && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
89 caller_method != C->method() && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
90 caller_method->holder()->is_subclass_of(callee_method->holder())) |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
91 ); |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
92 } |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
93 |
0 | 94 // positive filter: should send be inlined? returns NULL, if yes, or rejection msg |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
95 const char* InlineTree::shouldInline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) const { |
0 | 96 // Allows targeted inlining |
97 if(callee_method->should_inline()) { | |
98 *wci_result = *(WarmCallInfo::always_hot()); | |
99 if (PrintInlining && Verbose) { | |
100 print_indent(inline_depth()); | |
101 tty->print_cr("Inlined method is hot: "); | |
102 } | |
103 return NULL; | |
104 } | |
105 | |
106 // positive filter: should send be inlined? returns NULL (--> yes) | |
107 // or rejection msg | |
108 int max_size = C->max_inline_size(); | |
109 int size = callee_method->code_size(); | |
110 | |
111 // Check for too many throws (and not too huge) | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
112 if(callee_method->interpreter_throwout_count() > InlineThrowCount && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
113 size < InlineThrowMaxSize ) { |
0 | 114 wci_result->set_profit(wci_result->profit() * 100); |
115 if (PrintInlining && Verbose) { | |
116 print_indent(inline_depth()); | |
117 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count()); | |
118 } | |
119 return NULL; | |
120 } | |
121 | |
122 if (!UseOldInlining) { | |
123 return NULL; // size and frequency are represented in a new way | |
124 } | |
125 | |
126 int call_site_count = method()->scale_count(profile.count()); | |
127 int invoke_count = method()->interpreter_invocation_count(); | |
128 assert( invoke_count != 0, "Require invokation count greater than zero"); | |
129 int freq = call_site_count/invoke_count; | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
130 |
0 | 131 // bump the max size if the call is frequent |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
132 if ((freq >= InlineFrequencyRatio) || |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
133 (call_site_count >= InlineFrequencyCount) || |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
134 is_init_with_ea(callee_method, caller_method, C)) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
135 |
0 | 136 max_size = C->freq_inline_size(); |
137 if (size <= max_size && TraceFrequencyInlining) { | |
138 print_indent(inline_depth()); | |
139 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count); | |
140 print_indent(inline_depth()); | |
141 callee_method->print(); | |
142 tty->cr(); | |
143 } | |
144 } else { | |
145 // Not hot. Check for medium-sized pre-existing nmethod at cold sites. | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
146 if (callee_method->has_compiled_code() && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
147 callee_method->instructions_size() > InlineSmallCode/4) |
0 | 148 return "already compiled into a medium method"; |
149 } | |
150 if (size > max_size) { | |
151 if (max_size > C->max_inline_size()) | |
152 return "hot method too big"; | |
153 return "too big"; | |
154 } | |
155 return NULL; | |
156 } | |
157 | |
158 | |
159 // negative filter: should send NOT be inlined? returns NULL, ok to inline, or rejection msg | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
160 const char* InlineTree::shouldNotInline(ciMethod *callee_method, ciMethod* caller_method, WarmCallInfo* wci_result) const { |
0 | 161 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg |
162 if (!UseOldInlining) { | |
163 const char* fail = NULL; | |
164 if (callee_method->is_abstract()) fail = "abstract method"; | |
165 // note: we allow ik->is_abstract() | |
166 if (!callee_method->holder()->is_initialized()) fail = "method holder not initialized"; | |
167 if (callee_method->is_native()) fail = "native method"; | |
168 | |
169 if (fail) { | |
170 *wci_result = *(WarmCallInfo::always_cold()); | |
171 return fail; | |
172 } | |
173 | |
174 if (callee_method->has_unloaded_classes_in_signature()) { | |
175 wci_result->set_profit(wci_result->profit() * 0.1); | |
176 } | |
177 | |
178 // don't inline exception code unless the top method belongs to an | |
179 // exception class | |
180 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
181 ciMethod* top_method = caller_jvms() ? caller_jvms()->of_depth(1)->method() : method(); | |
182 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
183 wci_result->set_profit(wci_result->profit() * 0.1); | |
184 } | |
185 } | |
186 | |
187 if (callee_method->has_compiled_code() && callee_method->instructions_size() > InlineSmallCode) { | |
188 wci_result->set_profit(wci_result->profit() * 0.1); | |
189 // %%% adjust wci_result->size()? | |
190 } | |
191 | |
192 return NULL; | |
193 } | |
194 | |
195 // First check all inlining restrictions which are required for correctness | |
196 if (callee_method->is_abstract()) return "abstract method"; | |
197 // note: we allow ik->is_abstract() | |
198 if (!callee_method->holder()->is_initialized()) return "method holder not initialized"; | |
199 if (callee_method->is_native()) return "native method"; | |
200 if (callee_method->has_unloaded_classes_in_signature()) return "unloaded signature classes"; | |
201 | |
202 if (callee_method->should_inline()) { | |
203 // ignore heuristic controls on inlining | |
204 return NULL; | |
205 } | |
206 | |
207 // Now perform checks which are heuristic | |
208 | |
209 if( callee_method->has_compiled_code() && callee_method->instructions_size() > InlineSmallCode ) | |
210 return "already compiled into a big method"; | |
211 | |
212 // don't inline exception code unless the top method belongs to an | |
213 // exception class | |
214 if (caller_tree() != NULL && | |
215 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) { | |
216 const InlineTree *top = this; | |
217 while (top->caller_tree() != NULL) top = top->caller_tree(); | |
218 ciInstanceKlass* k = top->method()->holder(); | |
219 if (!k->is_subclass_of(C->env()->Throwable_klass())) | |
220 return "exception method"; | |
221 } | |
222 | |
223 // use frequency-based objections only for non-trivial methods | |
224 if (callee_method->code_size() <= MaxTrivialSize) return NULL; | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
225 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
226 // don't use counts with -Xcomp or CTW |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
227 if (UseInterpreter && !CompileTheWorld) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
228 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
229 if (!callee_method->has_compiled_code() && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
230 !callee_method->was_executed_more_than(0)) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
231 return "never executed"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
232 } |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
233 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
234 if (is_init_with_ea(callee_method, caller_method, C)) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
235 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
236 // Escape Analysis: inline all executed constructors |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
237 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
238 } else if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold, |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
239 CompileThreshold >> 1))) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
240 return "executed < MinInliningThreshold times"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
241 } |
0 | 242 } |
243 | |
244 if (callee_method->should_not_inline()) { | |
245 return "disallowed by CompilerOracle"; | |
246 } | |
247 | |
248 return NULL; | |
249 } | |
250 | |
251 //-----------------------------try_to_inline----------------------------------- | |
252 // return NULL if ok, reason for not inlining otherwise | |
253 // Relocated from "InliningClosure::try_to_inline" | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
254 const char* InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) { |
0 | 255 |
256 // Old algorithm had funny accumulating BC-size counters | |
257 if (UseOldInlining && ClipInlining | |
258 && (int)count_inline_bcs() >= DesiredMethodLimit) { | |
259 return "size > DesiredMethodLimit"; | |
260 } | |
261 | |
262 const char *msg = NULL; | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
263 if ((msg = shouldInline(callee_method, caller_method, caller_bci, |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
264 profile, wci_result)) != NULL) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
265 return msg; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
266 } |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
267 if ((msg = shouldNotInline(callee_method, caller_method, |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
268 wci_result)) != NULL) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
269 return msg; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
270 } |
0 | 271 |
272 bool is_accessor = InlineAccessors && callee_method->is_accessor(); | |
273 | |
274 // suppress a few checks for accessors and trivial methods | |
275 if (!is_accessor && callee_method->code_size() > MaxTrivialSize) { | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
276 |
0 | 277 // don't inline into giant methods |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
278 if (C->unique() > (uint)NodeCountInliningCutoff) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
279 return "NodeCountInliningCutoff"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
280 } |
0 | 281 |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
282 if ((!UseInterpreter || CompileTheWorld) && |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
283 is_init_with_ea(callee_method, caller_method, C)) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
284 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
285 // Escape Analysis stress testing when running Xcomp or CTW: |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
286 // inline constructors even if they are not reached. |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
287 |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
288 } else if (profile.count() == 0) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
289 // don't inline unreached call sites |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
290 return "call site not reached"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
291 } |
0 | 292 } |
293 | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
294 if (!C->do_inlining() && InlineAccessors && !is_accessor) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
295 return "not an accessor"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
296 } |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
297 if( inline_depth() > MaxInlineLevel ) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
298 return "inlining too deep"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
299 } |
0 | 300 if( method() == callee_method && |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
301 inline_depth() > MaxRecursiveInlineLevel ) { |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
302 return "recursively inlining too deep"; |
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
303 } |
0 | 304 |
305 int size = callee_method->code_size(); | |
306 | |
307 if (UseOldInlining && ClipInlining | |
308 && (int)count_inline_bcs() + size >= DesiredMethodLimit) { | |
309 return "size > DesiredMethodLimit"; | |
310 } | |
311 | |
312 // ok, inline this method | |
313 return NULL; | |
314 } | |
315 | |
316 //------------------------------pass_initial_checks---------------------------- | |
317 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) { | |
318 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL; | |
319 // Check if a callee_method was suggested | |
320 if( callee_method == NULL ) return false; | |
321 // Check if klass of callee_method is loaded | |
322 if( !callee_holder->is_loaded() ) return false; | |
323 if( !callee_holder->is_initialized() ) return false; | |
324 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) { | |
325 // Checks that constant pool's call site has been visited | |
326 // stricter than callee_holder->is_initialized() | |
327 ciBytecodeStream iter(caller_method); | |
328 iter.force_bci(caller_bci); | |
329 int index = iter.get_index_big(); | |
330 if( !caller_method->is_klass_loaded(index, true) ) { | |
331 return false; | |
332 } | |
333 // Try to do constant pool resolution if running Xcomp | |
334 Bytecodes::Code call_bc = iter.cur_bc(); | |
335 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) { | |
336 return false; | |
337 } | |
338 } | |
339 // We will attempt to see if a class/field/etc got properly loaded. If it | |
340 // did not, it may attempt to throw an exception during our probing. Catch | |
341 // and ignore such exceptions and do not attempt to compile the method. | |
342 if( callee_method->should_exclude() ) return false; | |
343 | |
344 return true; | |
345 } | |
346 | |
347 #ifndef PRODUCT | |
348 //------------------------------print_inlining--------------------------------- | |
349 // Really, the failure_msg can be a success message also. | |
350 void InlineTree::print_inlining(ciMethod *callee_method, int caller_bci, const char *failure_msg) const { | |
351 print_indent(inline_depth()); | |
352 tty->print("@ %d ", caller_bci); | |
353 if( callee_method ) callee_method->print_short_name(); | |
354 else tty->print(" callee not monotonic or profiled"); | |
355 tty->print(" %s", (failure_msg ? failure_msg : "inline")); | |
356 if( Verbose && callee_method ) { | |
357 const InlineTree *top = this; | |
358 while( top->caller_tree() != NULL ) { top = top->caller_tree(); } | |
359 tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count()); | |
360 } | |
361 tty->cr(); | |
362 } | |
363 #endif | |
364 | |
365 //------------------------------ok_to_inline----------------------------------- | |
366 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci) { | |
367 assert(callee_method != NULL, "caller checks for optimized virtual!"); | |
368 #ifdef ASSERT | |
369 // Make sure the incoming jvms has the same information content as me. | |
370 // This means that we can eventually make this whole class AllStatic. | |
371 if (jvms->caller() == NULL) { | |
372 assert(_caller_jvms == NULL, "redundant instance state"); | |
373 } else { | |
374 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state"); | |
375 } | |
376 assert(_method == jvms->method(), "redundant instance state"); | |
377 #endif | |
378 const char *failure_msg = NULL; | |
379 int caller_bci = jvms->bci(); | |
380 ciMethod *caller_method = jvms->method(); | |
381 | |
382 if( !pass_initial_checks(caller_method, caller_bci, callee_method)) { | |
383 if( PrintInlining ) { | |
384 failure_msg = "failed_initial_checks"; | |
385 print_inlining( callee_method, caller_bci, failure_msg); | |
386 } | |
387 return NULL; | |
388 } | |
389 | |
390 // Check if inlining policy says no. | |
391 WarmCallInfo wci = *(initial_wci); | |
41
874b2c4f43d1
6667605: (Escape Analysis) inline java constructors when EA is on
kvn
parents:
0
diff
changeset
|
392 failure_msg = try_to_inline(callee_method, caller_method, caller_bci, profile, &wci); |
0 | 393 if (failure_msg != NULL && C->log() != NULL) { |
394 C->log()->begin_elem("inline_fail reason='"); | |
395 C->log()->text("%s", failure_msg); | |
396 C->log()->end_elem("'"); | |
397 } | |
398 | |
399 #ifndef PRODUCT | |
400 if (UseOldInlining && InlineWarmCalls | |
401 && (PrintOpto || PrintOptoInlining || PrintInlining)) { | |
402 bool cold = wci.is_cold(); | |
403 bool hot = !cold && wci.is_hot(); | |
404 bool old_cold = (failure_msg != NULL); | |
405 if (old_cold != cold || (Verbose || WizardMode)) { | |
406 tty->print(" OldInlining= %4s : %s\n WCI=", | |
407 old_cold ? "cold" : "hot", failure_msg ? failure_msg : "OK"); | |
408 wci.print(); | |
409 } | |
410 } | |
411 #endif | |
412 if (UseOldInlining) { | |
413 if (failure_msg == NULL) | |
414 wci = *(WarmCallInfo::always_hot()); | |
415 else | |
416 wci = *(WarmCallInfo::always_cold()); | |
417 } | |
418 if (!InlineWarmCalls) { | |
419 if (!wci.is_cold() && !wci.is_hot()) { | |
420 // Do not inline the warm calls. | |
421 wci = *(WarmCallInfo::always_cold()); | |
422 } | |
423 } | |
424 | |
425 if (!wci.is_cold()) { | |
426 // In -UseOldInlining, the failure_msg may also be a success message. | |
427 if (failure_msg == NULL) failure_msg = "inline (hot)"; | |
428 | |
429 // Inline! | |
430 if( PrintInlining ) print_inlining( callee_method, caller_bci, failure_msg); | |
431 if (UseOldInlining) | |
432 build_inline_tree_for_callee(callee_method, jvms, caller_bci); | |
433 if (InlineWarmCalls && !wci.is_hot()) | |
434 return new (C) WarmCallInfo(wci); // copy to heap | |
435 return WarmCallInfo::always_hot(); | |
436 } | |
437 | |
438 // Do not inline | |
439 if (failure_msg == NULL) failure_msg = "too cold to inline"; | |
440 if( PrintInlining ) print_inlining( callee_method, caller_bci, failure_msg); | |
441 return NULL; | |
442 } | |
443 | |
444 //------------------------------compute_callee_frequency----------------------- | |
445 float InlineTree::compute_callee_frequency( int caller_bci ) const { | |
446 int count = method()->interpreter_call_site_count(caller_bci); | |
447 int invcnt = method()->interpreter_invocation_count(); | |
448 float freq = (float)count/(float)invcnt; | |
449 // Call-site count / interpreter invocation count, scaled recursively. | |
450 // Always between 0.0 and 1.0. Represents the percentage of the method's | |
451 // total execution time used at this call site. | |
452 | |
453 return freq; | |
454 } | |
455 | |
456 //------------------------------build_inline_tree_for_callee------------------- | |
457 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) { | |
458 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci); | |
459 // Attempt inlining. | |
460 InlineTree* old_ilt = callee_at(caller_bci, callee_method); | |
461 if (old_ilt != NULL) { | |
462 return old_ilt; | |
463 } | |
464 InlineTree *ilt = new InlineTree( C, this, callee_method, caller_jvms, caller_bci, recur_frequency ); | |
465 _subtrees.append( ilt ); | |
466 | |
467 NOT_PRODUCT( _count_inlines += 1; ) | |
468 | |
469 return ilt; | |
470 } | |
471 | |
472 | |
473 //---------------------------------------callee_at----------------------------- | |
474 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const { | |
475 for (int i = 0; i < _subtrees.length(); i++) { | |
476 InlineTree* sub = _subtrees.at(i); | |
477 if (sub->caller_bci() == bci && callee == sub->method()) { | |
478 return sub; | |
479 } | |
480 } | |
481 return NULL; | |
482 } | |
483 | |
484 | |
485 //------------------------------build_inline_tree_root------------------------- | |
486 InlineTree *InlineTree::build_inline_tree_root() { | |
487 Compile* C = Compile::current(); | |
488 | |
489 // Root of inline tree | |
490 InlineTree *ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F); | |
491 | |
492 return ilt; | |
493 } | |
494 | |
495 | |
496 //-------------------------find_subtree_from_root----------------------------- | |
497 // Given a jvms, which determines a call chain from the root method, | |
498 // find the corresponding inline tree. | |
499 // Note: This method will be removed or replaced as InlineTree goes away. | |
500 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee, bool create_if_not_found) { | |
501 InlineTree* iltp = root; | |
502 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0; | |
503 for (uint d = 1; d <= depth; d++) { | |
504 JVMState* jvmsp = jvms->of_depth(d); | |
505 // Select the corresponding subtree for this bci. | |
506 assert(jvmsp->method() == iltp->method(), "tree still in sync"); | |
507 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method(); | |
508 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee); | |
509 if (!sub) { | |
510 if (create_if_not_found && d == depth) { | |
511 return iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci()); | |
512 } | |
513 assert(sub != NULL, "should be a sub-ilt here"); | |
514 return NULL; | |
515 } | |
516 iltp = sub; | |
517 } | |
518 return iltp; | |
519 } | |
520 | |
521 // ---------------------------------------------------------------------------- | |
522 #ifndef PRODUCT | |
523 | |
524 static void per_method_stats() { | |
525 // Compute difference between this method's cumulative totals and old totals | |
526 int explicit_null_checks_cur = explicit_null_checks_inserted - explicit_null_checks_inserted_old; | |
527 int elided_null_checks_cur = explicit_null_checks_elided - explicit_null_checks_elided_old; | |
528 | |
529 // Print differences | |
530 if( explicit_null_checks_cur ) | |
531 tty->print_cr("XXX Explicit NULL checks inserted: %d", explicit_null_checks_cur); | |
532 if( elided_null_checks_cur ) | |
533 tty->print_cr("XXX Explicit NULL checks removed at parse time: %d", elided_null_checks_cur); | |
534 | |
535 // Store the current cumulative totals | |
536 nodes_created_old = nodes_created; | |
537 methods_parsed_old = methods_parsed; | |
538 methods_seen_old = methods_seen; | |
539 explicit_null_checks_inserted_old = explicit_null_checks_inserted; | |
540 explicit_null_checks_elided_old = explicit_null_checks_elided; | |
541 } | |
542 | |
543 #endif |