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
|
|
82 // positive filter: should send be inlined? returns NULL, if yes, or rejection msg
|
|
83 const char* InlineTree::shouldInline(ciMethod* callee_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) const {
|
|
84 // Allows targeted inlining
|
|
85 if(callee_method->should_inline()) {
|
|
86 *wci_result = *(WarmCallInfo::always_hot());
|
|
87 if (PrintInlining && Verbose) {
|
|
88 print_indent(inline_depth());
|
|
89 tty->print_cr("Inlined method is hot: ");
|
|
90 }
|
|
91 return NULL;
|
|
92 }
|
|
93
|
|
94 // positive filter: should send be inlined? returns NULL (--> yes)
|
|
95 // or rejection msg
|
|
96 int max_size = C->max_inline_size();
|
|
97 int size = callee_method->code_size();
|
|
98
|
|
99 // Check for too many throws (and not too huge)
|
|
100 if(callee_method->interpreter_throwout_count() > InlineThrowCount && size < InlineThrowMaxSize ) {
|
|
101 wci_result->set_profit(wci_result->profit() * 100);
|
|
102 if (PrintInlining && Verbose) {
|
|
103 print_indent(inline_depth());
|
|
104 tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count());
|
|
105 }
|
|
106 return NULL;
|
|
107 }
|
|
108
|
|
109 if (!UseOldInlining) {
|
|
110 return NULL; // size and frequency are represented in a new way
|
|
111 }
|
|
112
|
|
113 int call_site_count = method()->scale_count(profile.count());
|
|
114 int invoke_count = method()->interpreter_invocation_count();
|
|
115 assert( invoke_count != 0, "Require invokation count greater than zero");
|
|
116 int freq = call_site_count/invoke_count;
|
|
117 // bump the max size if the call is frequent
|
|
118 if ((freq >= InlineFrequencyRatio) || (call_site_count >= InlineFrequencyCount)) {
|
|
119 max_size = C->freq_inline_size();
|
|
120 if (size <= max_size && TraceFrequencyInlining) {
|
|
121 print_indent(inline_depth());
|
|
122 tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count);
|
|
123 print_indent(inline_depth());
|
|
124 callee_method->print();
|
|
125 tty->cr();
|
|
126 }
|
|
127 } else {
|
|
128 // Not hot. Check for medium-sized pre-existing nmethod at cold sites.
|
|
129 if (callee_method->has_compiled_code() && callee_method->instructions_size() > InlineSmallCode/4)
|
|
130 return "already compiled into a medium method";
|
|
131 }
|
|
132 if (size > max_size) {
|
|
133 if (max_size > C->max_inline_size())
|
|
134 return "hot method too big";
|
|
135 return "too big";
|
|
136 }
|
|
137 return NULL;
|
|
138 }
|
|
139
|
|
140
|
|
141 // negative filter: should send NOT be inlined? returns NULL, ok to inline, or rejection msg
|
|
142 const char* InlineTree::shouldNotInline(ciMethod *callee_method, WarmCallInfo* wci_result) const {
|
|
143 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg
|
|
144 if (!UseOldInlining) {
|
|
145 const char* fail = NULL;
|
|
146 if (callee_method->is_abstract()) fail = "abstract method";
|
|
147 // note: we allow ik->is_abstract()
|
|
148 if (!callee_method->holder()->is_initialized()) fail = "method holder not initialized";
|
|
149 if (callee_method->is_native()) fail = "native method";
|
|
150
|
|
151 if (fail) {
|
|
152 *wci_result = *(WarmCallInfo::always_cold());
|
|
153 return fail;
|
|
154 }
|
|
155
|
|
156 if (callee_method->has_unloaded_classes_in_signature()) {
|
|
157 wci_result->set_profit(wci_result->profit() * 0.1);
|
|
158 }
|
|
159
|
|
160 // don't inline exception code unless the top method belongs to an
|
|
161 // exception class
|
|
162 if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
|
|
163 ciMethod* top_method = caller_jvms() ? caller_jvms()->of_depth(1)->method() : method();
|
|
164 if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
|
|
165 wci_result->set_profit(wci_result->profit() * 0.1);
|
|
166 }
|
|
167 }
|
|
168
|
|
169 if (callee_method->has_compiled_code() && callee_method->instructions_size() > InlineSmallCode) {
|
|
170 wci_result->set_profit(wci_result->profit() * 0.1);
|
|
171 // %%% adjust wci_result->size()?
|
|
172 }
|
|
173
|
|
174 return NULL;
|
|
175 }
|
|
176
|
|
177 // First check all inlining restrictions which are required for correctness
|
|
178 if (callee_method->is_abstract()) return "abstract method";
|
|
179 // note: we allow ik->is_abstract()
|
|
180 if (!callee_method->holder()->is_initialized()) return "method holder not initialized";
|
|
181 if (callee_method->is_native()) return "native method";
|
|
182 if (callee_method->has_unloaded_classes_in_signature()) return "unloaded signature classes";
|
|
183
|
|
184 if (callee_method->should_inline()) {
|
|
185 // ignore heuristic controls on inlining
|
|
186 return NULL;
|
|
187 }
|
|
188
|
|
189 // Now perform checks which are heuristic
|
|
190
|
|
191 if( callee_method->has_compiled_code() && callee_method->instructions_size() > InlineSmallCode )
|
|
192 return "already compiled into a big method";
|
|
193
|
|
194 // don't inline exception code unless the top method belongs to an
|
|
195 // exception class
|
|
196 if (caller_tree() != NULL &&
|
|
197 callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
|
|
198 const InlineTree *top = this;
|
|
199 while (top->caller_tree() != NULL) top = top->caller_tree();
|
|
200 ciInstanceKlass* k = top->method()->holder();
|
|
201 if (!k->is_subclass_of(C->env()->Throwable_klass()))
|
|
202 return "exception method";
|
|
203 }
|
|
204
|
|
205 // use frequency-based objections only for non-trivial methods
|
|
206 if (callee_method->code_size() <= MaxTrivialSize) return NULL;
|
|
207 if (UseInterpreter && !CompileTheWorld) { // don't use counts with -Xcomp or CTW
|
|
208 if (!callee_method->has_compiled_code() && !callee_method->was_executed_more_than(0)) return "never executed";
|
|
209 if (!callee_method->was_executed_more_than(MIN2(MinInliningThreshold, CompileThreshold >> 1))) return "executed < MinInliningThreshold times";
|
|
210 }
|
|
211
|
|
212 if (callee_method->should_not_inline()) {
|
|
213 return "disallowed by CompilerOracle";
|
|
214 }
|
|
215
|
|
216 return NULL;
|
|
217 }
|
|
218
|
|
219 //-----------------------------try_to_inline-----------------------------------
|
|
220 // return NULL if ok, reason for not inlining otherwise
|
|
221 // Relocated from "InliningClosure::try_to_inline"
|
|
222 const char* InlineTree::try_to_inline(ciMethod* callee_method, int caller_bci, ciCallProfile& profile, WarmCallInfo* wci_result) {
|
|
223 ciMethod* caller_method = method();
|
|
224
|
|
225 // Old algorithm had funny accumulating BC-size counters
|
|
226 if (UseOldInlining && ClipInlining
|
|
227 && (int)count_inline_bcs() >= DesiredMethodLimit) {
|
|
228 return "size > DesiredMethodLimit";
|
|
229 }
|
|
230
|
|
231 const char *msg = NULL;
|
|
232 if ((msg = shouldInline(callee_method, caller_bci, profile, wci_result)) != NULL) return msg;
|
|
233 if ((msg = shouldNotInline(callee_method, wci_result)) != NULL) return msg;
|
|
234
|
|
235 bool is_accessor = InlineAccessors && callee_method->is_accessor();
|
|
236
|
|
237 // suppress a few checks for accessors and trivial methods
|
|
238 if (!is_accessor && callee_method->code_size() > MaxTrivialSize) {
|
|
239 // don't inline into giant methods
|
|
240 if (C->unique() > (uint)NodeCountInliningCutoff) return "NodeCountInliningCutoff";
|
|
241
|
|
242 // don't inline unreached call sites
|
|
243 if (profile.count() == 0) return "call site not reached";
|
|
244 }
|
|
245
|
|
246 if (!C->do_inlining() && InlineAccessors && !is_accessor) return "not an accessor";
|
|
247
|
|
248 if( inline_depth() > MaxInlineLevel ) return "inlining too deep";
|
|
249 if( method() == callee_method &&
|
|
250 inline_depth() > MaxRecursiveInlineLevel ) return "recursively inlining too deep";
|
|
251
|
|
252 int size = callee_method->code_size();
|
|
253
|
|
254 if (UseOldInlining && ClipInlining
|
|
255 && (int)count_inline_bcs() + size >= DesiredMethodLimit) {
|
|
256 return "size > DesiredMethodLimit";
|
|
257 }
|
|
258
|
|
259 // ok, inline this method
|
|
260 return NULL;
|
|
261 }
|
|
262
|
|
263 //------------------------------pass_initial_checks----------------------------
|
|
264 bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* callee_method) {
|
|
265 ciInstanceKlass *callee_holder = callee_method ? callee_method->holder() : NULL;
|
|
266 // Check if a callee_method was suggested
|
|
267 if( callee_method == NULL ) return false;
|
|
268 // Check if klass of callee_method is loaded
|
|
269 if( !callee_holder->is_loaded() ) return false;
|
|
270 if( !callee_holder->is_initialized() ) return false;
|
|
271 if( !UseInterpreter || CompileTheWorld /* running Xcomp or CTW */ ) {
|
|
272 // Checks that constant pool's call site has been visited
|
|
273 // stricter than callee_holder->is_initialized()
|
|
274 ciBytecodeStream iter(caller_method);
|
|
275 iter.force_bci(caller_bci);
|
|
276 int index = iter.get_index_big();
|
|
277 if( !caller_method->is_klass_loaded(index, true) ) {
|
|
278 return false;
|
|
279 }
|
|
280 // Try to do constant pool resolution if running Xcomp
|
|
281 Bytecodes::Code call_bc = iter.cur_bc();
|
|
282 if( !caller_method->check_call(index, call_bc == Bytecodes::_invokestatic) ) {
|
|
283 return false;
|
|
284 }
|
|
285 }
|
|
286 // We will attempt to see if a class/field/etc got properly loaded. If it
|
|
287 // did not, it may attempt to throw an exception during our probing. Catch
|
|
288 // and ignore such exceptions and do not attempt to compile the method.
|
|
289 if( callee_method->should_exclude() ) return false;
|
|
290
|
|
291 return true;
|
|
292 }
|
|
293
|
|
294 #ifndef PRODUCT
|
|
295 //------------------------------print_inlining---------------------------------
|
|
296 // Really, the failure_msg can be a success message also.
|
|
297 void InlineTree::print_inlining(ciMethod *callee_method, int caller_bci, const char *failure_msg) const {
|
|
298 print_indent(inline_depth());
|
|
299 tty->print("@ %d ", caller_bci);
|
|
300 if( callee_method ) callee_method->print_short_name();
|
|
301 else tty->print(" callee not monotonic or profiled");
|
|
302 tty->print(" %s", (failure_msg ? failure_msg : "inline"));
|
|
303 if( Verbose && callee_method ) {
|
|
304 const InlineTree *top = this;
|
|
305 while( top->caller_tree() != NULL ) { top = top->caller_tree(); }
|
|
306 tty->print(" bcs: %d+%d invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count());
|
|
307 }
|
|
308 tty->cr();
|
|
309 }
|
|
310 #endif
|
|
311
|
|
312 //------------------------------ok_to_inline-----------------------------------
|
|
313 WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms, ciCallProfile& profile, WarmCallInfo* initial_wci) {
|
|
314 assert(callee_method != NULL, "caller checks for optimized virtual!");
|
|
315 #ifdef ASSERT
|
|
316 // Make sure the incoming jvms has the same information content as me.
|
|
317 // This means that we can eventually make this whole class AllStatic.
|
|
318 if (jvms->caller() == NULL) {
|
|
319 assert(_caller_jvms == NULL, "redundant instance state");
|
|
320 } else {
|
|
321 assert(_caller_jvms->same_calls_as(jvms->caller()), "redundant instance state");
|
|
322 }
|
|
323 assert(_method == jvms->method(), "redundant instance state");
|
|
324 #endif
|
|
325 const char *failure_msg = NULL;
|
|
326 int caller_bci = jvms->bci();
|
|
327 ciMethod *caller_method = jvms->method();
|
|
328
|
|
329 if( !pass_initial_checks(caller_method, caller_bci, callee_method)) {
|
|
330 if( PrintInlining ) {
|
|
331 failure_msg = "failed_initial_checks";
|
|
332 print_inlining( callee_method, caller_bci, failure_msg);
|
|
333 }
|
|
334 return NULL;
|
|
335 }
|
|
336
|
|
337 // Check if inlining policy says no.
|
|
338 WarmCallInfo wci = *(initial_wci);
|
|
339 failure_msg = try_to_inline(callee_method, caller_bci, profile, &wci);
|
|
340 if (failure_msg != NULL && C->log() != NULL) {
|
|
341 C->log()->begin_elem("inline_fail reason='");
|
|
342 C->log()->text("%s", failure_msg);
|
|
343 C->log()->end_elem("'");
|
|
344 }
|
|
345
|
|
346 #ifndef PRODUCT
|
|
347 if (UseOldInlining && InlineWarmCalls
|
|
348 && (PrintOpto || PrintOptoInlining || PrintInlining)) {
|
|
349 bool cold = wci.is_cold();
|
|
350 bool hot = !cold && wci.is_hot();
|
|
351 bool old_cold = (failure_msg != NULL);
|
|
352 if (old_cold != cold || (Verbose || WizardMode)) {
|
|
353 tty->print(" OldInlining= %4s : %s\n WCI=",
|
|
354 old_cold ? "cold" : "hot", failure_msg ? failure_msg : "OK");
|
|
355 wci.print();
|
|
356 }
|
|
357 }
|
|
358 #endif
|
|
359 if (UseOldInlining) {
|
|
360 if (failure_msg == NULL)
|
|
361 wci = *(WarmCallInfo::always_hot());
|
|
362 else
|
|
363 wci = *(WarmCallInfo::always_cold());
|
|
364 }
|
|
365 if (!InlineWarmCalls) {
|
|
366 if (!wci.is_cold() && !wci.is_hot()) {
|
|
367 // Do not inline the warm calls.
|
|
368 wci = *(WarmCallInfo::always_cold());
|
|
369 }
|
|
370 }
|
|
371
|
|
372 if (!wci.is_cold()) {
|
|
373 // In -UseOldInlining, the failure_msg may also be a success message.
|
|
374 if (failure_msg == NULL) failure_msg = "inline (hot)";
|
|
375
|
|
376 // Inline!
|
|
377 if( PrintInlining ) print_inlining( callee_method, caller_bci, failure_msg);
|
|
378 if (UseOldInlining)
|
|
379 build_inline_tree_for_callee(callee_method, jvms, caller_bci);
|
|
380 if (InlineWarmCalls && !wci.is_hot())
|
|
381 return new (C) WarmCallInfo(wci); // copy to heap
|
|
382 return WarmCallInfo::always_hot();
|
|
383 }
|
|
384
|
|
385 // Do not inline
|
|
386 if (failure_msg == NULL) failure_msg = "too cold to inline";
|
|
387 if( PrintInlining ) print_inlining( callee_method, caller_bci, failure_msg);
|
|
388 return NULL;
|
|
389 }
|
|
390
|
|
391 //------------------------------compute_callee_frequency-----------------------
|
|
392 float InlineTree::compute_callee_frequency( int caller_bci ) const {
|
|
393 int count = method()->interpreter_call_site_count(caller_bci);
|
|
394 int invcnt = method()->interpreter_invocation_count();
|
|
395 float freq = (float)count/(float)invcnt;
|
|
396 // Call-site count / interpreter invocation count, scaled recursively.
|
|
397 // Always between 0.0 and 1.0. Represents the percentage of the method's
|
|
398 // total execution time used at this call site.
|
|
399
|
|
400 return freq;
|
|
401 }
|
|
402
|
|
403 //------------------------------build_inline_tree_for_callee-------------------
|
|
404 InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, JVMState* caller_jvms, int caller_bci) {
|
|
405 float recur_frequency = _site_invoke_ratio * compute_callee_frequency(caller_bci);
|
|
406 // Attempt inlining.
|
|
407 InlineTree* old_ilt = callee_at(caller_bci, callee_method);
|
|
408 if (old_ilt != NULL) {
|
|
409 return old_ilt;
|
|
410 }
|
|
411 InlineTree *ilt = new InlineTree( C, this, callee_method, caller_jvms, caller_bci, recur_frequency );
|
|
412 _subtrees.append( ilt );
|
|
413
|
|
414 NOT_PRODUCT( _count_inlines += 1; )
|
|
415
|
|
416 return ilt;
|
|
417 }
|
|
418
|
|
419
|
|
420 //---------------------------------------callee_at-----------------------------
|
|
421 InlineTree *InlineTree::callee_at(int bci, ciMethod* callee) const {
|
|
422 for (int i = 0; i < _subtrees.length(); i++) {
|
|
423 InlineTree* sub = _subtrees.at(i);
|
|
424 if (sub->caller_bci() == bci && callee == sub->method()) {
|
|
425 return sub;
|
|
426 }
|
|
427 }
|
|
428 return NULL;
|
|
429 }
|
|
430
|
|
431
|
|
432 //------------------------------build_inline_tree_root-------------------------
|
|
433 InlineTree *InlineTree::build_inline_tree_root() {
|
|
434 Compile* C = Compile::current();
|
|
435
|
|
436 // Root of inline tree
|
|
437 InlineTree *ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F);
|
|
438
|
|
439 return ilt;
|
|
440 }
|
|
441
|
|
442
|
|
443 //-------------------------find_subtree_from_root-----------------------------
|
|
444 // Given a jvms, which determines a call chain from the root method,
|
|
445 // find the corresponding inline tree.
|
|
446 // Note: This method will be removed or replaced as InlineTree goes away.
|
|
447 InlineTree* InlineTree::find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee, bool create_if_not_found) {
|
|
448 InlineTree* iltp = root;
|
|
449 uint depth = jvms && jvms->has_method() ? jvms->depth() : 0;
|
|
450 for (uint d = 1; d <= depth; d++) {
|
|
451 JVMState* jvmsp = jvms->of_depth(d);
|
|
452 // Select the corresponding subtree for this bci.
|
|
453 assert(jvmsp->method() == iltp->method(), "tree still in sync");
|
|
454 ciMethod* d_callee = (d == depth) ? callee : jvms->of_depth(d+1)->method();
|
|
455 InlineTree* sub = iltp->callee_at(jvmsp->bci(), d_callee);
|
|
456 if (!sub) {
|
|
457 if (create_if_not_found && d == depth) {
|
|
458 return iltp->build_inline_tree_for_callee(d_callee, jvmsp, jvmsp->bci());
|
|
459 }
|
|
460 assert(sub != NULL, "should be a sub-ilt here");
|
|
461 return NULL;
|
|
462 }
|
|
463 iltp = sub;
|
|
464 }
|
|
465 return iltp;
|
|
466 }
|
|
467
|
|
468 // ----------------------------------------------------------------------------
|
|
469 #ifndef PRODUCT
|
|
470
|
|
471 static void per_method_stats() {
|
|
472 // Compute difference between this method's cumulative totals and old totals
|
|
473 int explicit_null_checks_cur = explicit_null_checks_inserted - explicit_null_checks_inserted_old;
|
|
474 int elided_null_checks_cur = explicit_null_checks_elided - explicit_null_checks_elided_old;
|
|
475
|
|
476 // Print differences
|
|
477 if( explicit_null_checks_cur )
|
|
478 tty->print_cr("XXX Explicit NULL checks inserted: %d", explicit_null_checks_cur);
|
|
479 if( elided_null_checks_cur )
|
|
480 tty->print_cr("XXX Explicit NULL checks removed at parse time: %d", elided_null_checks_cur);
|
|
481
|
|
482 // Store the current cumulative totals
|
|
483 nodes_created_old = nodes_created;
|
|
484 methods_parsed_old = methods_parsed;
|
|
485 methods_seen_old = methods_seen;
|
|
486 explicit_null_checks_inserted_old = explicit_null_checks_inserted;
|
|
487 explicit_null_checks_elided_old = explicit_null_checks_elided;
|
|
488 }
|
|
489
|
|
490 #endif
|