Mercurial > hg > graal-jvmci-8
annotate src/share/vm/opto/compile.cpp @ 23822:626f594dffa6
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
Reviewed-by: stuefe, coleenp, roland
author | csahu |
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date | Tue, 01 Mar 2016 12:50:37 +0530 |
parents | 535618ab1c04 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2015, 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 * | |
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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" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
17622 | 28 #include "ci/ciReplay.hpp" |
1972 | 29 #include "classfile/systemDictionary.hpp" |
30 #include "code/exceptionHandlerTable.hpp" | |
31 #include "code/nmethod.hpp" | |
32 #include "compiler/compileLog.hpp" | |
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33 #include "compiler/disassembler.hpp" |
1972 | 34 #include "compiler/oopMap.hpp" |
35 #include "opto/addnode.hpp" | |
36 #include "opto/block.hpp" | |
37 #include "opto/c2compiler.hpp" | |
38 #include "opto/callGenerator.hpp" | |
39 #include "opto/callnode.hpp" | |
40 #include "opto/cfgnode.hpp" | |
41 #include "opto/chaitin.hpp" | |
42 #include "opto/compile.hpp" | |
43 #include "opto/connode.hpp" | |
44 #include "opto/divnode.hpp" | |
45 #include "opto/escape.hpp" | |
46 #include "opto/idealGraphPrinter.hpp" | |
47 #include "opto/loopnode.hpp" | |
48 #include "opto/machnode.hpp" | |
49 #include "opto/macro.hpp" | |
50 #include "opto/matcher.hpp" | |
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51 #include "opto/mathexactnode.hpp" |
1972 | 52 #include "opto/memnode.hpp" |
53 #include "opto/mulnode.hpp" | |
54 #include "opto/node.hpp" | |
55 #include "opto/opcodes.hpp" | |
56 #include "opto/output.hpp" | |
57 #include "opto/parse.hpp" | |
58 #include "opto/phaseX.hpp" | |
59 #include "opto/rootnode.hpp" | |
60 #include "opto/runtime.hpp" | |
61 #include "opto/stringopts.hpp" | |
62 #include "opto/type.hpp" | |
63 #include "opto/vectornode.hpp" | |
64 #include "runtime/arguments.hpp" | |
65 #include "runtime/signature.hpp" | |
66 #include "runtime/stubRoutines.hpp" | |
67 #include "runtime/timer.hpp" | |
10405 | 68 #include "trace/tracing.hpp" |
1972 | 69 #include "utilities/copy.hpp" |
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70 #if defined AD_MD_HPP |
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71 # include AD_MD_HPP |
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72 #elif defined TARGET_ARCH_MODEL_x86_32 |
1972 | 73 # include "adfiles/ad_x86_32.hpp" |
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74 #elif defined TARGET_ARCH_MODEL_x86_64 |
1972 | 75 # include "adfiles/ad_x86_64.hpp" |
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76 #elif defined TARGET_ARCH_MODEL_sparc |
1972 | 77 # include "adfiles/ad_sparc.hpp" |
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78 #elif defined TARGET_ARCH_MODEL_zero |
1972 | 79 # include "adfiles/ad_zero.hpp" |
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80 #elif defined TARGET_ARCH_MODEL_ppc_64 |
14391 | 81 # include "adfiles/ad_ppc_64.hpp" |
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82 #endif |
0 | 83 |
2008 | 84 |
85 // -------------------- Compile::mach_constant_base_node ----------------------- | |
86 // Constant table base node singleton. | |
87 MachConstantBaseNode* Compile::mach_constant_base_node() { | |
88 if (_mach_constant_base_node == NULL) { | |
89 _mach_constant_base_node = new (C) MachConstantBaseNode(); | |
90 _mach_constant_base_node->add_req(C->root()); | |
91 } | |
92 return _mach_constant_base_node; | |
93 } | |
94 | |
95 | |
0 | 96 /// Support for intrinsics. |
97 | |
98 // Return the index at which m must be inserted (or already exists). | |
99 // The sort order is by the address of the ciMethod, with is_virtual as minor key. | |
100 int Compile::intrinsic_insertion_index(ciMethod* m, bool is_virtual) { | |
101 #ifdef ASSERT | |
102 for (int i = 1; i < _intrinsics->length(); i++) { | |
103 CallGenerator* cg1 = _intrinsics->at(i-1); | |
104 CallGenerator* cg2 = _intrinsics->at(i); | |
105 assert(cg1->method() != cg2->method() | |
106 ? cg1->method() < cg2->method() | |
107 : cg1->is_virtual() < cg2->is_virtual(), | |
108 "compiler intrinsics list must stay sorted"); | |
109 } | |
110 #endif | |
111 // Binary search sorted list, in decreasing intervals [lo, hi]. | |
112 int lo = 0, hi = _intrinsics->length()-1; | |
113 while (lo <= hi) { | |
114 int mid = (uint)(hi + lo) / 2; | |
115 ciMethod* mid_m = _intrinsics->at(mid)->method(); | |
116 if (m < mid_m) { | |
117 hi = mid-1; | |
118 } else if (m > mid_m) { | |
119 lo = mid+1; | |
120 } else { | |
121 // look at minor sort key | |
122 bool mid_virt = _intrinsics->at(mid)->is_virtual(); | |
123 if (is_virtual < mid_virt) { | |
124 hi = mid-1; | |
125 } else if (is_virtual > mid_virt) { | |
126 lo = mid+1; | |
127 } else { | |
128 return mid; // exact match | |
129 } | |
130 } | |
131 } | |
132 return lo; // inexact match | |
133 } | |
134 | |
135 void Compile::register_intrinsic(CallGenerator* cg) { | |
136 if (_intrinsics == NULL) { | |
7473 | 137 _intrinsics = new (comp_arena())GrowableArray<CallGenerator*>(comp_arena(), 60, 0, NULL); |
0 | 138 } |
139 // This code is stolen from ciObjectFactory::insert. | |
140 // Really, GrowableArray should have methods for | |
141 // insert_at, remove_at, and binary_search. | |
142 int len = _intrinsics->length(); | |
143 int index = intrinsic_insertion_index(cg->method(), cg->is_virtual()); | |
144 if (index == len) { | |
145 _intrinsics->append(cg); | |
146 } else { | |
147 #ifdef ASSERT | |
148 CallGenerator* oldcg = _intrinsics->at(index); | |
149 assert(oldcg->method() != cg->method() || oldcg->is_virtual() != cg->is_virtual(), "don't register twice"); | |
150 #endif | |
151 _intrinsics->append(_intrinsics->at(len-1)); | |
152 int pos; | |
153 for (pos = len-2; pos >= index; pos--) { | |
154 _intrinsics->at_put(pos+1,_intrinsics->at(pos)); | |
155 } | |
156 _intrinsics->at_put(index, cg); | |
157 } | |
158 assert(find_intrinsic(cg->method(), cg->is_virtual()) == cg, "registration worked"); | |
159 } | |
160 | |
161 CallGenerator* Compile::find_intrinsic(ciMethod* m, bool is_virtual) { | |
162 assert(m->is_loaded(), "don't try this on unloaded methods"); | |
163 if (_intrinsics != NULL) { | |
164 int index = intrinsic_insertion_index(m, is_virtual); | |
165 if (index < _intrinsics->length() | |
166 && _intrinsics->at(index)->method() == m | |
167 && _intrinsics->at(index)->is_virtual() == is_virtual) { | |
168 return _intrinsics->at(index); | |
169 } | |
170 } | |
171 // Lazily create intrinsics for intrinsic IDs well-known in the runtime. | |
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172 if (m->intrinsic_id() != vmIntrinsics::_none && |
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173 m->intrinsic_id() <= vmIntrinsics::LAST_COMPILER_INLINE) { |
0 | 174 CallGenerator* cg = make_vm_intrinsic(m, is_virtual); |
175 if (cg != NULL) { | |
176 // Save it for next time: | |
177 register_intrinsic(cg); | |
178 return cg; | |
179 } else { | |
180 gather_intrinsic_statistics(m->intrinsic_id(), is_virtual, _intrinsic_disabled); | |
181 } | |
182 } | |
183 return NULL; | |
184 } | |
185 | |
186 // Compile:: register_library_intrinsics and make_vm_intrinsic are defined | |
187 // in library_call.cpp. | |
188 | |
189 | |
190 #ifndef PRODUCT | |
191 // statistics gathering... | |
192 | |
193 juint Compile::_intrinsic_hist_count[vmIntrinsics::ID_LIMIT] = {0}; | |
194 jubyte Compile::_intrinsic_hist_flags[vmIntrinsics::ID_LIMIT] = {0}; | |
195 | |
196 bool Compile::gather_intrinsic_statistics(vmIntrinsics::ID id, bool is_virtual, int flags) { | |
197 assert(id > vmIntrinsics::_none && id < vmIntrinsics::ID_LIMIT, "oob"); | |
198 int oflags = _intrinsic_hist_flags[id]; | |
199 assert(flags != 0, "what happened?"); | |
200 if (is_virtual) { | |
201 flags |= _intrinsic_virtual; | |
202 } | |
203 bool changed = (flags != oflags); | |
204 if ((flags & _intrinsic_worked) != 0) { | |
205 juint count = (_intrinsic_hist_count[id] += 1); | |
206 if (count == 1) { | |
207 changed = true; // first time | |
208 } | |
209 // increment the overall count also: | |
210 _intrinsic_hist_count[vmIntrinsics::_none] += 1; | |
211 } | |
212 if (changed) { | |
213 if (((oflags ^ flags) & _intrinsic_virtual) != 0) { | |
214 // Something changed about the intrinsic's virtuality. | |
215 if ((flags & _intrinsic_virtual) != 0) { | |
216 // This is the first use of this intrinsic as a virtual call. | |
217 if (oflags != 0) { | |
218 // We already saw it as a non-virtual, so note both cases. | |
219 flags |= _intrinsic_both; | |
220 } | |
221 } else if ((oflags & _intrinsic_both) == 0) { | |
222 // This is the first use of this intrinsic as a non-virtual | |
223 flags |= _intrinsic_both; | |
224 } | |
225 } | |
226 _intrinsic_hist_flags[id] = (jubyte) (oflags | flags); | |
227 } | |
228 // update the overall flags also: | |
229 _intrinsic_hist_flags[vmIntrinsics::_none] |= (jubyte) flags; | |
230 return changed; | |
231 } | |
232 | |
233 static char* format_flags(int flags, char* buf) { | |
234 buf[0] = 0; | |
235 if ((flags & Compile::_intrinsic_worked) != 0) strcat(buf, ",worked"); | |
236 if ((flags & Compile::_intrinsic_failed) != 0) strcat(buf, ",failed"); | |
237 if ((flags & Compile::_intrinsic_disabled) != 0) strcat(buf, ",disabled"); | |
238 if ((flags & Compile::_intrinsic_virtual) != 0) strcat(buf, ",virtual"); | |
239 if ((flags & Compile::_intrinsic_both) != 0) strcat(buf, ",nonvirtual"); | |
240 if (buf[0] == 0) strcat(buf, ","); | |
241 assert(buf[0] == ',', "must be"); | |
242 return &buf[1]; | |
243 } | |
244 | |
245 void Compile::print_intrinsic_statistics() { | |
246 char flagsbuf[100]; | |
247 ttyLocker ttyl; | |
248 if (xtty != NULL) xtty->head("statistics type='intrinsic'"); | |
249 tty->print_cr("Compiler intrinsic usage:"); | |
250 juint total = _intrinsic_hist_count[vmIntrinsics::_none]; | |
251 if (total == 0) total = 1; // avoid div0 in case of no successes | |
252 #define PRINT_STAT_LINE(name, c, f) \ | |
253 tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(c), ((c) * 100.0) / total, name, f); | |
254 for (int index = 1 + (int)vmIntrinsics::_none; index < (int)vmIntrinsics::ID_LIMIT; index++) { | |
255 vmIntrinsics::ID id = (vmIntrinsics::ID) index; | |
256 int flags = _intrinsic_hist_flags[id]; | |
257 juint count = _intrinsic_hist_count[id]; | |
258 if ((flags | count) != 0) { | |
259 PRINT_STAT_LINE(vmIntrinsics::name_at(id), count, format_flags(flags, flagsbuf)); | |
260 } | |
261 } | |
262 PRINT_STAT_LINE("total", total, format_flags(_intrinsic_hist_flags[vmIntrinsics::_none], flagsbuf)); | |
263 if (xtty != NULL) xtty->tail("statistics"); | |
264 } | |
265 | |
266 void Compile::print_statistics() { | |
267 { ttyLocker ttyl; | |
268 if (xtty != NULL) xtty->head("statistics type='opto'"); | |
269 Parse::print_statistics(); | |
270 PhaseCCP::print_statistics(); | |
271 PhaseRegAlloc::print_statistics(); | |
272 Scheduling::print_statistics(); | |
273 PhasePeephole::print_statistics(); | |
274 PhaseIdealLoop::print_statistics(); | |
275 if (xtty != NULL) xtty->tail("statistics"); | |
276 } | |
277 if (_intrinsic_hist_flags[vmIntrinsics::_none] != 0) { | |
278 // put this under its own <statistics> element. | |
279 print_intrinsic_statistics(); | |
280 } | |
281 } | |
282 #endif //PRODUCT | |
283 | |
284 // Support for bundling info | |
285 Bundle* Compile::node_bundling(const Node *n) { | |
286 assert(valid_bundle_info(n), "oob"); | |
287 return &_node_bundling_base[n->_idx]; | |
288 } | |
289 | |
290 bool Compile::valid_bundle_info(const Node *n) { | |
291 return (_node_bundling_limit > n->_idx); | |
292 } | |
293 | |
294 | |
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295 void Compile::gvn_replace_by(Node* n, Node* nn) { |
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296 for (DUIterator_Last imin, i = n->last_outs(imin); i >= imin; ) { |
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297 Node* use = n->last_out(i); |
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298 bool is_in_table = initial_gvn()->hash_delete(use); |
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299 uint uses_found = 0; |
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300 for (uint j = 0; j < use->len(); j++) { |
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301 if (use->in(j) == n) { |
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302 if (j < use->req()) |
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303 use->set_req(j, nn); |
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304 else |
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305 use->set_prec(j, nn); |
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306 uses_found++; |
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307 } |
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308 } |
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309 if (is_in_table) { |
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310 // reinsert into table |
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311 initial_gvn()->hash_find_insert(use); |
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312 } |
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313 record_for_igvn(use); |
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314 i -= uses_found; // we deleted 1 or more copies of this edge |
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315 } |
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316 } |
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317 |
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318 |
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319 static inline bool not_a_node(const Node* n) { |
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320 if (n == NULL) return true; |
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321 if (((intptr_t)n & 1) != 0) return true; // uninitialized, etc. |
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322 if (*(address*)n == badAddress) return true; // kill by Node::destruct |
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323 return false; |
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324 } |
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325 |
0 | 326 // Identify all nodes that are reachable from below, useful. |
327 // Use breadth-first pass that records state in a Unique_Node_List, | |
328 // recursive traversal is slower. | |
329 void Compile::identify_useful_nodes(Unique_Node_List &useful) { | |
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330 int estimated_worklist_size = live_nodes(); |
0 | 331 useful.map( estimated_worklist_size, NULL ); // preallocate space |
332 | |
333 // Initialize worklist | |
334 if (root() != NULL) { useful.push(root()); } | |
335 // If 'top' is cached, declare it useful to preserve cached node | |
336 if( cached_top_node() ) { useful.push(cached_top_node()); } | |
337 | |
338 // Push all useful nodes onto the list, breadthfirst | |
339 for( uint next = 0; next < useful.size(); ++next ) { | |
340 assert( next < unique(), "Unique useful nodes < total nodes"); | |
341 Node *n = useful.at(next); | |
342 uint max = n->len(); | |
343 for( uint i = 0; i < max; ++i ) { | |
344 Node *m = n->in(i); | |
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345 if (not_a_node(m)) continue; |
0 | 346 useful.push(m); |
347 } | |
348 } | |
349 } | |
350 | |
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351 // Update dead_node_list with any missing dead nodes using useful |
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352 // list. Consider all non-useful nodes to be useless i.e., dead nodes. |
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353 void Compile::update_dead_node_list(Unique_Node_List &useful) { |
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354 uint max_idx = unique(); |
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355 VectorSet& useful_node_set = useful.member_set(); |
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356 |
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357 for (uint node_idx = 0; node_idx < max_idx; node_idx++) { |
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358 // If node with index node_idx is not in useful set, |
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359 // mark it as dead in dead node list. |
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360 if (! useful_node_set.test(node_idx) ) { |
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361 record_dead_node(node_idx); |
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362 } |
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363 } |
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364 } |
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365 |
7473 | 366 void Compile::remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful) { |
367 int shift = 0; | |
368 for (int i = 0; i < inlines->length(); i++) { | |
369 CallGenerator* cg = inlines->at(i); | |
370 CallNode* call = cg->call_node(); | |
371 if (shift > 0) { | |
372 inlines->at_put(i-shift, cg); | |
373 } | |
374 if (!useful.member(call)) { | |
375 shift++; | |
376 } | |
377 } | |
378 inlines->trunc_to(inlines->length()-shift); | |
379 } | |
380 | |
0 | 381 // Disconnect all useless nodes by disconnecting those at the boundary. |
382 void Compile::remove_useless_nodes(Unique_Node_List &useful) { | |
383 uint next = 0; | |
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384 while (next < useful.size()) { |
0 | 385 Node *n = useful.at(next++); |
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386 if (n->is_SafePoint()) { |
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387 // We're done with a parsing phase. Replaced nodes are not valid |
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388 // beyond that point. |
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389 n->as_SafePoint()->delete_replaced_nodes(); |
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390 } |
0 | 391 // Use raw traversal of out edges since this code removes out edges |
392 int max = n->outcnt(); | |
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393 for (int j = 0; j < max; ++j) { |
0 | 394 Node* child = n->raw_out(j); |
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395 if (! useful.member(child)) { |
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396 assert(!child->is_top() || child != top(), |
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397 "If top is cached in Compile object it is in useful list"); |
0 | 398 // Only need to remove this out-edge to the useless node |
399 n->raw_del_out(j); | |
400 --j; | |
401 --max; | |
402 } | |
403 } | |
404 if (n->outcnt() == 1 && n->has_special_unique_user()) { | |
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405 record_for_igvn(n->unique_out()); |
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406 } |
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407 } |
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408 // Remove useless macro and predicate opaq nodes |
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409 for (int i = C->macro_count()-1; i >= 0; i--) { |
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410 Node* n = C->macro_node(i); |
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411 if (!useful.member(n)) { |
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412 remove_macro_node(n); |
0 | 413 } |
414 } | |
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415 // Remove useless CastII nodes with range check dependency |
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416 for (int i = range_check_cast_count() - 1; i >= 0; i--) { |
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417 Node* cast = range_check_cast_node(i); |
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418 if (!useful.member(cast)) { |
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419 remove_range_check_cast(cast); |
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420 } |
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421 } |
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422 // Remove useless expensive node |
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423 for (int i = C->expensive_count()-1; i >= 0; i--) { |
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424 Node* n = C->expensive_node(i); |
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425 if (!useful.member(n)) { |
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426 remove_expensive_node(n); |
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427 } |
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428 } |
7473 | 429 // clean up the late inline lists |
430 remove_useless_late_inlines(&_string_late_inlines, useful); | |
10278 | 431 remove_useless_late_inlines(&_boxing_late_inlines, useful); |
7473 | 432 remove_useless_late_inlines(&_late_inlines, useful); |
0 | 433 debug_only(verify_graph_edges(true/*check for no_dead_code*/);) |
434 } | |
435 | |
436 //------------------------------frame_size_in_words----------------------------- | |
437 // frame_slots in units of words | |
438 int Compile::frame_size_in_words() const { | |
439 // shift is 0 in LP32 and 1 in LP64 | |
440 const int shift = (LogBytesPerWord - LogBytesPerInt); | |
441 int words = _frame_slots >> shift; | |
442 assert( words << shift == _frame_slots, "frame size must be properly aligned in LP64" ); | |
443 return words; | |
444 } | |
445 | |
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446 // To bang the stack of this compiled method we use the stack size |
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447 // that the interpreter would need in case of a deoptimization. This |
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448 // removes the need to bang the stack in the deoptimization blob which |
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449 // in turn simplifies stack overflow handling. |
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450 int Compile::bang_size_in_bytes() const { |
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451 return MAX2(_interpreter_frame_size, frame_size_in_bytes()); |
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452 } |
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453 |
0 | 454 // ============================================================================ |
455 //------------------------------CompileWrapper--------------------------------- | |
456 class CompileWrapper : public StackObj { | |
457 Compile *const _compile; | |
458 public: | |
459 CompileWrapper(Compile* compile); | |
460 | |
461 ~CompileWrapper(); | |
462 }; | |
463 | |
464 CompileWrapper::CompileWrapper(Compile* compile) : _compile(compile) { | |
465 // the Compile* pointer is stored in the current ciEnv: | |
466 ciEnv* env = compile->env(); | |
467 assert(env == ciEnv::current(), "must already be a ciEnv active"); | |
468 assert(env->compiler_data() == NULL, "compile already active?"); | |
469 env->set_compiler_data(compile); | |
470 assert(compile == Compile::current(), "sanity"); | |
471 | |
472 compile->set_type_dict(NULL); | |
473 compile->set_type_hwm(NULL); | |
474 compile->set_type_last_size(0); | |
475 compile->set_last_tf(NULL, NULL); | |
476 compile->set_indexSet_arena(NULL); | |
477 compile->set_indexSet_free_block_list(NULL); | |
478 compile->init_type_arena(); | |
479 Type::Initialize(compile); | |
480 _compile->set_scratch_buffer_blob(NULL); | |
481 _compile->begin_method(); | |
482 } | |
483 CompileWrapper::~CompileWrapper() { | |
484 _compile->end_method(); | |
485 if (_compile->scratch_buffer_blob() != NULL) | |
486 BufferBlob::free(_compile->scratch_buffer_blob()); | |
487 _compile->env()->set_compiler_data(NULL); | |
488 } | |
489 | |
490 | |
491 //----------------------------print_compile_messages--------------------------- | |
492 void Compile::print_compile_messages() { | |
493 #ifndef PRODUCT | |
494 // Check if recompiling | |
495 if (_subsume_loads == false && PrintOpto) { | |
496 // Recompiling without allowing machine instructions to subsume loads | |
497 tty->print_cr("*********************************************************"); | |
498 tty->print_cr("** Bailout: Recompile without subsuming loads **"); | |
499 tty->print_cr("*********************************************************"); | |
500 } | |
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501 if (_do_escape_analysis != DoEscapeAnalysis && PrintOpto) { |
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502 // Recompiling without escape analysis |
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503 tty->print_cr("*********************************************************"); |
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504 tty->print_cr("** Bailout: Recompile without escape analysis **"); |
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505 tty->print_cr("*********************************************************"); |
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506 } |
10278 | 507 if (_eliminate_boxing != EliminateAutoBox && PrintOpto) { |
508 // Recompiling without boxing elimination | |
509 tty->print_cr("*********************************************************"); | |
510 tty->print_cr("** Bailout: Recompile without boxing elimination **"); | |
511 tty->print_cr("*********************************************************"); | |
512 } | |
0 | 513 if (env()->break_at_compile()) { |
605 | 514 // Open the debugger when compiling this method. |
0 | 515 tty->print("### Breaking when compiling: "); |
516 method()->print_short_name(); | |
517 tty->cr(); | |
518 BREAKPOINT; | |
519 } | |
520 | |
521 if( PrintOpto ) { | |
522 if (is_osr_compilation()) { | |
523 tty->print("[OSR]%3d", _compile_id); | |
524 } else { | |
525 tty->print("%3d", _compile_id); | |
526 } | |
527 } | |
528 #endif | |
529 } | |
530 | |
531 | |
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532 //-----------------------init_scratch_buffer_blob------------------------------ |
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533 // Construct a temporary BufferBlob and cache it for this compile. |
2008 | 534 void Compile::init_scratch_buffer_blob(int const_size) { |
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535 // If there is already a scratch buffer blob allocated and the |
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536 // constant section is big enough, use it. Otherwise free the |
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537 // current and allocate a new one. |
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538 BufferBlob* blob = scratch_buffer_blob(); |
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539 if ((blob != NULL) && (const_size <= _scratch_const_size)) { |
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540 // Use the current blob. |
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541 } else { |
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542 if (blob != NULL) { |
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543 BufferBlob::free(blob); |
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544 } |
0 | 545 |
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546 ResourceMark rm; |
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547 _scratch_const_size = const_size; |
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548 int size = (MAX_inst_size + MAX_stubs_size + _scratch_const_size); |
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549 blob = BufferBlob::create("Compile::scratch_buffer", size); |
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550 // Record the buffer blob for next time. |
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551 set_scratch_buffer_blob(blob); |
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552 // Have we run out of code space? |
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553 if (scratch_buffer_blob() == NULL) { |
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554 // Let CompilerBroker disable further compilations. |
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555 record_failure("Not enough space for scratch buffer in CodeCache"); |
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556 return; |
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557 } |
163 | 558 } |
0 | 559 |
560 // Initialize the relocation buffers | |
1748 | 561 relocInfo* locs_buf = (relocInfo*) blob->content_end() - MAX_locs_size; |
0 | 562 set_scratch_locs_memory(locs_buf); |
563 } | |
564 | |
565 | |
566 //-----------------------scratch_emit_size------------------------------------- | |
567 // Helper function that computes size by emitting code | |
568 uint Compile::scratch_emit_size(const Node* n) { | |
2008 | 569 // Start scratch_emit_size section. |
570 set_in_scratch_emit_size(true); | |
571 | |
0 | 572 // Emit into a trash buffer and count bytes emitted. |
573 // This is a pretty expensive way to compute a size, | |
574 // but it works well enough if seldom used. | |
575 // All common fixed-size instructions are given a size | |
576 // method by the AD file. | |
577 // Note that the scratch buffer blob and locs memory are | |
578 // allocated at the beginning of the compile task, and | |
579 // may be shared by several calls to scratch_emit_size. | |
580 // The allocation of the scratch buffer blob is particularly | |
581 // expensive, since it has to grab the code cache lock. | |
582 BufferBlob* blob = this->scratch_buffer_blob(); | |
583 assert(blob != NULL, "Initialize BufferBlob at start"); | |
584 assert(blob->size() > MAX_inst_size, "sanity"); | |
585 relocInfo* locs_buf = scratch_locs_memory(); | |
1748 | 586 address blob_begin = blob->content_begin(); |
0 | 587 address blob_end = (address)locs_buf; |
1748 | 588 assert(blob->content_contains(blob_end), "sanity"); |
0 | 589 CodeBuffer buf(blob_begin, blob_end - blob_begin); |
2008 | 590 buf.initialize_consts_size(_scratch_const_size); |
0 | 591 buf.initialize_stubs_size(MAX_stubs_size); |
592 assert(locs_buf != NULL, "sanity"); | |
2008 | 593 int lsize = MAX_locs_size / 3; |
594 buf.consts()->initialize_shared_locs(&locs_buf[lsize * 0], lsize); | |
595 buf.insts()->initialize_shared_locs( &locs_buf[lsize * 1], lsize); | |
596 buf.stubs()->initialize_shared_locs( &locs_buf[lsize * 2], lsize); | |
597 | |
598 // Do the emission. | |
3839 | 599 |
600 Label fakeL; // Fake label for branch instructions. | |
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601 Label* saveL = NULL; |
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602 uint save_bnum = 0; |
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603 bool is_branch = n->is_MachBranch(); |
3839 | 604 if (is_branch) { |
605 MacroAssembler masm(&buf); | |
606 masm.bind(fakeL); | |
3853
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607 n->as_MachBranch()->save_label(&saveL, &save_bnum); |
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608 n->as_MachBranch()->label_set(&fakeL, 0); |
3839 | 609 } |
0 | 610 n->emit(buf, this->regalloc()); |
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|
611 if (is_branch) // Restore label. |
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612 n->as_MachBranch()->label_set(saveL, save_bnum); |
2008 | 613 |
614 // End scratch_emit_size section. | |
615 set_in_scratch_emit_size(false); | |
616 | |
1748 | 617 return buf.insts_size(); |
0 | 618 } |
619 | |
620 | |
621 // ============================================================================ | |
622 //------------------------------Compile standard------------------------------- | |
623 debug_only( int Compile::_debug_idx = 100000; ) | |
624 | |
625 // Compile a method. entry_bci is -1 for normal compilations and indicates | |
626 // the continuation bci for on stack replacement. | |
627 | |
628 | |
10278 | 629 Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr_bci, |
630 bool subsume_loads, bool do_escape_analysis, bool eliminate_boxing ) | |
0 | 631 : Phase(Compiler), |
632 _env(ci_env), | |
633 _log(ci_env->log()), | |
634 _compile_id(ci_env->compile_id()), | |
635 _save_argument_registers(false), | |
636 _stub_name(NULL), | |
637 _stub_function(NULL), | |
638 _stub_entry_point(NULL), | |
639 _method(target), | |
640 _entry_bci(osr_bci), | |
641 _initial_gvn(NULL), | |
642 _for_igvn(NULL), | |
643 _warm_calls(NULL), | |
644 _subsume_loads(subsume_loads), | |
38
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645 _do_escape_analysis(do_escape_analysis), |
10278 | 646 _eliminate_boxing(eliminate_boxing), |
0 | 647 _failure_reason(NULL), |
648 _code_buffer("Compile::Fill_buffer"), | |
649 _orig_pc_slot(0), | |
650 _orig_pc_slot_offset_in_bytes(0), | |
1265 | 651 _has_method_handle_invokes(false), |
2008 | 652 _mach_constant_base_node(NULL), |
0 | 653 _node_bundling_limit(0), |
654 _node_bundling_base(NULL), | |
859
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655 _java_calls(0), |
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656 _inner_loops(0), |
2008 | 657 _scratch_const_size(-1), |
658 _in_scratch_emit_size(false), | |
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659 _dead_node_list(comp_arena()), |
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660 _dead_node_count(0), |
0 | 661 #ifndef PRODUCT |
662 _trace_opto_output(TraceOptoOutput || method()->has_option("TraceOptoOutput")), | |
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663 _in_dump_cnt(0), |
0 | 664 _printer(IdealGraphPrinter::printer()), |
665 #endif | |
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666 _congraph(NULL), |
20360 | 667 _comp_arena(mtCompiler), |
668 _node_arena(mtCompiler), | |
669 _old_arena(mtCompiler), | |
670 _Compile_types(mtCompiler), | |
17622 | 671 _replay_inline_data(NULL), |
7473 | 672 _late_inlines(comp_arena(), 2, 0, NULL), |
673 _string_late_inlines(comp_arena(), 2, 0, NULL), | |
10278 | 674 _boxing_late_inlines(comp_arena(), 2, 0, NULL), |
7473 | 675 _late_inlines_pos(0), |
676 _number_of_mh_late_inlines(0), | |
677 _inlining_progress(false), | |
678 _inlining_incrementally(false), | |
7421
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679 _print_inlining_list(NULL), |
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680 _print_inlining_idx(0), |
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681 _interpreter_frame_size(0), |
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682 _max_node_limit(MaxNodeLimit) { |
0 | 683 C = this; |
684 | |
685 CompileWrapper cw(this); | |
686 #ifndef PRODUCT | |
687 if (TimeCompiler2) { | |
688 tty->print(" "); | |
689 target->holder()->name()->print(); | |
690 tty->print("."); | |
691 target->print_short_name(); | |
692 tty->print(" "); | |
693 } | |
694 TraceTime t1("Total compilation time", &_t_totalCompilation, TimeCompiler, TimeCompiler2); | |
695 TraceTime t2(NULL, &_t_methodCompilation, TimeCompiler, false); | |
100
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696 bool print_opto_assembly = PrintOptoAssembly || _method->has_option("PrintOptoAssembly"); |
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697 if (!print_opto_assembly) { |
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698 bool print_assembly = (PrintAssembly || _method->should_print_assembly()); |
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699 if (print_assembly && !Disassembler::can_decode()) { |
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700 tty->print_cr("PrintAssembly request changed to PrintOptoAssembly"); |
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701 print_opto_assembly = true; |
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702 } |
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703 } |
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704 set_print_assembly(print_opto_assembly); |
367
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705 set_parsed_irreducible_loop(false); |
17622 | 706 |
707 if (method()->has_option("ReplayInline")) { | |
708 _replay_inline_data = ciReplay::load_inline_data(method(), entry_bci(), ci_env->comp_level()); | |
709 } | |
0 | 710 #endif |
12295 | 711 set_print_inlining(PrintInlining || method()->has_option("PrintInlining") NOT_PRODUCT( || PrintOptoInlining)); |
712 set_print_intrinsics(PrintIntrinsics || method()->has_option("PrintIntrinsics")); | |
17914
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8039298: assert(base == NULL || t_adr->isa_rawptr() || !phase->type(base)->higher_equal(TypePtr::NULL_PTR))
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713 set_has_irreducible_loop(true); // conservative until build_loop_tree() reset it |
0 | 714 |
17780 | 715 if (ProfileTraps RTM_OPT_ONLY( || UseRTMLocking )) { |
0 | 716 // Make sure the method being compiled gets its own MDO, |
717 // so we can at least track the decompile_count(). | |
17780 | 718 // Need MDO to record RTM code generation state. |
2007
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719 method()->ensure_method_data(); |
0 | 720 } |
721 | |
722 Init(::AliasLevel); | |
723 | |
724 | |
725 print_compile_messages(); | |
726 | |
17672 | 727 _ilt = InlineTree::build_inline_tree_root(); |
0 | 728 |
729 // Even if NO memory addresses are used, MergeMem nodes must have at least 1 slice | |
730 assert(num_alias_types() >= AliasIdxRaw, ""); | |
731 | |
732 #define MINIMUM_NODE_HASH 1023 | |
733 // Node list that Iterative GVN will start with | |
734 Unique_Node_List for_igvn(comp_arena()); | |
735 set_for_igvn(&for_igvn); | |
736 | |
737 // GVN that will be run immediately on new nodes | |
738 uint estimated_size = method()->code_size()*4+64; | |
739 estimated_size = (estimated_size < MINIMUM_NODE_HASH ? MINIMUM_NODE_HASH : estimated_size); | |
740 PhaseGVN gvn(node_arena(), estimated_size); | |
741 set_initial_gvn(&gvn); | |
742 | |
12295 | 743 if (print_inlining() || print_intrinsics()) { |
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744 _print_inlining_list = new (comp_arena())GrowableArray<PrintInliningBuffer>(comp_arena(), 1, 1, PrintInliningBuffer()); |
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745 } |
0 | 746 { // Scope for timing the parser |
747 TracePhase t3("parse", &_t_parser, true); | |
748 | |
749 // Put top into the hash table ASAP. | |
750 initial_gvn()->transform_no_reclaim(top()); | |
751 | |
752 // Set up tf(), start(), and find a CallGenerator. | |
3249
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753 CallGenerator* cg = NULL; |
0 | 754 if (is_osr_compilation()) { |
755 const TypeTuple *domain = StartOSRNode::osr_domain(); | |
756 const TypeTuple *range = TypeTuple::make_range(method()->signature()); | |
757 init_tf(TypeFunc::make(domain, range)); | |
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758 StartNode* s = new (this) StartOSRNode(root(), domain); |
0 | 759 initial_gvn()->set_type_bottom(s); |
760 init_start(s); | |
761 cg = CallGenerator::for_osr(method(), entry_bci()); | |
762 } else { | |
763 // Normal case. | |
764 init_tf(TypeFunc::make(method())); | |
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765 StartNode* s = new (this) StartNode(root(), tf()->domain()); |
0 | 766 initial_gvn()->set_type_bottom(s); |
767 init_start(s); | |
3249
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768 if (method()->intrinsic_id() == vmIntrinsics::_Reference_get && UseG1GC) { |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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769 // With java.lang.ref.reference.get() we must go through the |
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770 // intrinsic when G1 is enabled - even when get() is the root |
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771 // method of the compile - so that, if necessary, the value in |
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772 // the referent field of the reference object gets recorded by |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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773 // the pre-barrier code. |
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774 // Specifically, if G1 is enabled, the value in the referent |
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|
775 // field is recorded by the G1 SATB pre barrier. This will |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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776 // result in the referent being marked live and the reference |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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777 // object removed from the list of discovered references during |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
778 // reference processing. |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
779 cg = find_intrinsic(method(), false); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
changeset
|
780 } |
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|
781 if (cg == NULL) { |
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782 float past_uses = method()->interpreter_invocation_count(); |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
783 float expected_uses = past_uses; |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
784 cg = CallGenerator::for_inline(method(), expected_uses); |
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|
785 } |
0 | 786 } |
787 if (failing()) return; | |
788 if (cg == NULL) { | |
789 record_method_not_compilable_all_tiers("cannot parse method"); | |
790 return; | |
791 } | |
792 JVMState* jvms = build_start_state(start(), tf()); | |
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793 if ((jvms = cg->generate(jvms)) == NULL) { |
0 | 794 record_method_not_compilable("method parse failed"); |
795 return; | |
796 } | |
797 GraphKit kit(jvms); | |
798 | |
799 if (!kit.stopped()) { | |
800 // Accept return values, and transfer control we know not where. | |
801 // This is done by a special, unique ReturnNode bound to root. | |
802 return_values(kit.jvms()); | |
803 } | |
804 | |
805 if (kit.has_exceptions()) { | |
806 // Any exceptions that escape from this call must be rethrown | |
807 // to whatever caller is dynamically above us on the stack. | |
808 // This is done by a special, unique RethrowNode bound to root. | |
809 rethrow_exceptions(kit.transfer_exceptions_into_jvms()); | |
810 } | |
811 | |
7473 | 812 assert(IncrementalInline || (_late_inlines.length() == 0 && !has_mh_late_inlines()), "incremental inlining is off"); |
813 | |
814 if (_late_inlines.length() == 0 && !has_mh_late_inlines() && !failing() && has_stringbuilder()) { | |
815 inline_string_calls(true); | |
1080
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diff
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|
816 } |
7473 | 817 |
818 if (failing()) return; | |
1080
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819 |
10405 | 820 print_method(PHASE_BEFORE_REMOVEUSELESS, 3); |
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821 |
0 | 822 // Remove clutter produced by parsing. |
823 if (!failing()) { | |
824 ResourceMark rm; | |
825 PhaseRemoveUseless pru(initial_gvn(), &for_igvn); | |
826 } | |
827 } | |
828 | |
829 // Note: Large methods are capped off in do_one_bytecode(). | |
830 if (failing()) return; | |
831 | |
832 // After parsing, node notes are no longer automagic. | |
833 // They must be propagated by register_new_node_with_optimizer(), | |
834 // clone(), or the like. | |
835 set_default_node_notes(NULL); | |
836 | |
837 for (;;) { | |
838 int successes = Inline_Warm(); | |
839 if (failing()) return; | |
840 if (successes == 0) break; | |
841 } | |
842 | |
843 // Drain the list. | |
844 Finish_Warm(); | |
845 #ifndef PRODUCT | |
846 if (_printer) { | |
847 _printer->print_inlining(this); | |
848 } | |
849 #endif | |
850 | |
851 if (failing()) return; | |
852 NOT_PRODUCT( verify_graph_edges(); ) | |
853 | |
854 // Now optimize | |
855 Optimize(); | |
856 if (failing()) return; | |
857 NOT_PRODUCT( verify_graph_edges(); ) | |
858 | |
859 #ifndef PRODUCT | |
860 if (PrintIdeal) { | |
861 ttyLocker ttyl; // keep the following output all in one block | |
862 // This output goes directly to the tty, not the compiler log. | |
863 // To enable tools to match it up with the compilation activity, | |
864 // be sure to tag this tty output with the compile ID. | |
865 if (xtty != NULL) { | |
866 xtty->head("ideal compile_id='%d'%s", compile_id(), | |
867 is_osr_compilation() ? " compile_kind='osr'" : | |
868 ""); | |
869 } | |
870 root()->dump(9999); | |
871 if (xtty != NULL) { | |
872 xtty->tail("ideal"); | |
873 } | |
874 } | |
875 #endif | |
876 | |
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877 NOT_PRODUCT( verify_barriers(); ) |
17622 | 878 |
879 // Dump compilation data to replay it. | |
880 if (method()->has_option("DumpReplay")) { | |
881 env()->dump_replay_data(_compile_id); | |
882 } | |
883 if (method()->has_option("DumpInline") && (ilt() != NULL)) { | |
884 env()->dump_inline_data(_compile_id); | |
885 } | |
886 | |
0 | 887 // Now that we know the size of all the monitors we can add a fixed slot |
888 // for the original deopt pc. | |
889 | |
890 _orig_pc_slot = fixed_slots(); | |
891 int next_slot = _orig_pc_slot + (sizeof(address) / VMRegImpl::stack_slot_size); | |
892 set_fixed_slots(next_slot); | |
893 | |
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894 // Compute when to use implicit null checks. Used by matching trap based |
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895 // nodes and NullCheck optimization. |
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896 set_allowed_deopt_reasons(); |
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897 |
0 | 898 // Now generate code |
899 Code_Gen(); | |
900 if (failing()) return; | |
901 | |
902 // Check if we want to skip execution of all compiled code. | |
903 { | |
904 #ifndef PRODUCT | |
905 if (OptoNoExecute) { | |
906 record_method_not_compilable("+OptoNoExecute"); // Flag as failed | |
907 return; | |
908 } | |
909 TracePhase t2("install_code", &_t_registerMethod, TimeCompiler); | |
910 #endif | |
911 | |
912 if (is_osr_compilation()) { | |
913 _code_offsets.set_value(CodeOffsets::Verified_Entry, 0); | |
914 _code_offsets.set_value(CodeOffsets::OSR_Entry, _first_block_size); | |
915 } else { | |
916 _code_offsets.set_value(CodeOffsets::Verified_Entry, _first_block_size); | |
917 _code_offsets.set_value(CodeOffsets::OSR_Entry, 0); | |
918 } | |
919 | |
920 env()->register_method(_method, _entry_bci, | |
921 &_code_offsets, | |
922 _orig_pc_slot_offset_in_bytes, | |
923 code_buffer(), | |
924 frame_size_in_words(), _oop_map_set, | |
925 &_handler_table, &_inc_table, | |
926 compiler, | |
927 env()->comp_level(), | |
6792
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7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
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928 has_unsafe_access(), |
17780 | 929 SharedRuntime::is_wide_vector(max_vector_size()), |
930 rtm_state() | |
0 | 931 ); |
6843 | 932 |
933 if (log() != NULL) // Print code cache state into compiler log | |
934 log()->code_cache_state(); | |
0 | 935 } |
936 } | |
937 | |
938 //------------------------------Compile---------------------------------------- | |
939 // Compile a runtime stub | |
940 Compile::Compile( ciEnv* ci_env, | |
941 TypeFunc_generator generator, | |
942 address stub_function, | |
943 const char *stub_name, | |
944 int is_fancy_jump, | |
945 bool pass_tls, | |
946 bool save_arg_registers, | |
947 bool return_pc ) | |
948 : Phase(Compiler), | |
949 _env(ci_env), | |
950 _log(ci_env->log()), | |
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951 _compile_id(0), |
0 | 952 _save_argument_registers(save_arg_registers), |
953 _method(NULL), | |
954 _stub_name(stub_name), | |
955 _stub_function(stub_function), | |
956 _stub_entry_point(NULL), | |
957 _entry_bci(InvocationEntryBci), | |
958 _initial_gvn(NULL), | |
959 _for_igvn(NULL), | |
960 _warm_calls(NULL), | |
961 _orig_pc_slot(0), | |
962 _orig_pc_slot_offset_in_bytes(0), | |
963 _subsume_loads(true), | |
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964 _do_escape_analysis(false), |
10278 | 965 _eliminate_boxing(false), |
0 | 966 _failure_reason(NULL), |
967 _code_buffer("Compile::Fill_buffer"), | |
1265 | 968 _has_method_handle_invokes(false), |
2008 | 969 _mach_constant_base_node(NULL), |
0 | 970 _node_bundling_limit(0), |
971 _node_bundling_base(NULL), | |
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972 _java_calls(0), |
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973 _inner_loops(0), |
0 | 974 #ifndef PRODUCT |
975 _trace_opto_output(TraceOptoOutput), | |
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976 _in_dump_cnt(0), |
0 | 977 _printer(NULL), |
978 #endif | |
20360 | 979 _comp_arena(mtCompiler), |
980 _node_arena(mtCompiler), | |
981 _old_arena(mtCompiler), | |
982 _Compile_types(mtCompiler), | |
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983 _dead_node_list(comp_arena()), |
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984 _dead_node_count(0), |
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985 _congraph(NULL), |
17622 | 986 _replay_inline_data(NULL), |
7473 | 987 _number_of_mh_late_inlines(0), |
988 _inlining_progress(false), | |
989 _inlining_incrementally(false), | |
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990 _print_inlining_list(NULL), |
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991 _print_inlining_idx(0), |
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992 _allowed_reasons(0), |
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993 _interpreter_frame_size(0), |
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994 _max_node_limit(MaxNodeLimit) { |
0 | 995 C = this; |
996 | |
997 #ifndef PRODUCT | |
998 TraceTime t1(NULL, &_t_totalCompilation, TimeCompiler, false); | |
999 TraceTime t2(NULL, &_t_stubCompilation, TimeCompiler, false); | |
1000 set_print_assembly(PrintFrameConverterAssembly); | |
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1001 set_parsed_irreducible_loop(false); |
0 | 1002 #endif |
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1003 set_has_irreducible_loop(false); // no loops |
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1004 |
0 | 1005 CompileWrapper cw(this); |
1006 Init(/*AliasLevel=*/ 0); | |
1007 init_tf((*generator)()); | |
1008 | |
1009 { | |
1010 // The following is a dummy for the sake of GraphKit::gen_stub | |
1011 Unique_Node_List for_igvn(comp_arena()); | |
1012 set_for_igvn(&for_igvn); // not used, but some GraphKit guys push on this | |
1013 PhaseGVN gvn(Thread::current()->resource_area(),255); | |
1014 set_initial_gvn(&gvn); // not significant, but GraphKit guys use it pervasively | |
1015 gvn.transform_no_reclaim(top()); | |
1016 | |
1017 GraphKit kit; | |
1018 kit.gen_stub(stub_function, stub_name, is_fancy_jump, pass_tls, return_pc); | |
1019 } | |
1020 | |
1021 NOT_PRODUCT( verify_graph_edges(); ) | |
1022 Code_Gen(); | |
1023 if (failing()) return; | |
1024 | |
1025 | |
1026 // Entry point will be accessed using compile->stub_entry_point(); | |
1027 if (code_buffer() == NULL) { | |
1028 Matcher::soft_match_failure(); | |
1029 } else { | |
1030 if (PrintAssembly && (WizardMode || Verbose)) | |
1031 tty->print_cr("### Stub::%s", stub_name); | |
1032 | |
1033 if (!failing()) { | |
1034 assert(_fixed_slots == 0, "no fixed slots used for runtime stubs"); | |
1035 | |
1036 // Make the NMethod | |
1037 // For now we mark the frame as never safe for profile stackwalking | |
1038 RuntimeStub *rs = RuntimeStub::new_runtime_stub(stub_name, | |
1039 code_buffer(), | |
1040 CodeOffsets::frame_never_safe, | |
1041 // _code_offsets.value(CodeOffsets::Frame_Complete), | |
1042 frame_size_in_words(), | |
1043 _oop_map_set, | |
1044 save_arg_registers); | |
1045 assert(rs != NULL && rs->is_runtime_stub(), "sanity check"); | |
1046 | |
1047 _stub_entry_point = rs->entry_point(); | |
1048 } | |
1049 } | |
1050 } | |
1051 | |
1052 //------------------------------Init------------------------------------------- | |
1053 // Prepare for a single compilation | |
1054 void Compile::Init(int aliaslevel) { | |
1055 _unique = 0; | |
1056 _regalloc = NULL; | |
1057 | |
1058 _tf = NULL; // filled in later | |
1059 _top = NULL; // cached later | |
1060 _matcher = NULL; // filled in later | |
1061 _cfg = NULL; // filled in later | |
1062 | |
1063 set_24_bit_selection_and_mode(Use24BitFP, false); | |
1064 | |
1065 _node_note_array = NULL; | |
1066 _default_node_notes = NULL; | |
1067 | |
1068 _immutable_memory = NULL; // filled in at first inquiry | |
1069 | |
1070 // Globally visible Nodes | |
1071 // First set TOP to NULL to give safe behavior during creation of RootNode | |
1072 set_cached_top_node(NULL); | |
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1073 set_root(new (this) RootNode()); |
0 | 1074 // Now that you have a Root to point to, create the real TOP |
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1075 set_cached_top_node( new (this) ConNode(Type::TOP) ); |
0 | 1076 set_recent_alloc(NULL, NULL); |
1077 | |
1078 // Create Debug Information Recorder to record scopes, oopmaps, etc. | |
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1079 env()->set_oop_recorder(new OopRecorder(env()->arena())); |
0 | 1080 env()->set_debug_info(new DebugInformationRecorder(env()->oop_recorder())); |
1081 env()->set_dependencies(new Dependencies(env())); | |
1082 | |
1083 _fixed_slots = 0; | |
1084 set_has_split_ifs(false); | |
1085 set_has_loops(has_method() && method()->has_loops()); // first approximation | |
1080
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1086 set_has_stringbuilder(false); |
10278 | 1087 set_has_boxed_value(false); |
0 | 1088 _trap_can_recompile = false; // no traps emitted yet |
1089 _major_progress = true; // start out assuming good things will happen | |
1090 set_has_unsafe_access(false); | |
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1091 set_max_vector_size(0); |
0 | 1092 Copy::zero_to_bytes(_trap_hist, sizeof(_trap_hist)); |
1093 set_decompile_count(0); | |
1094 | |
418 | 1095 set_do_freq_based_layout(BlockLayoutByFrequency || method_has_option("BlockLayoutByFrequency")); |
1783 | 1096 set_num_loop_opts(LoopOptsCount); |
1097 set_do_inlining(Inline); | |
1098 set_max_inline_size(MaxInlineSize); | |
1099 set_freq_inline_size(FreqInlineSize); | |
1100 set_do_scheduling(OptoScheduling); | |
1101 set_do_count_invocations(false); | |
1102 set_do_method_data_update(false); | |
17780 | 1103 set_rtm_state(NoRTM); // No RTM lock eliding by default |
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1104 method_has_option_value("MaxNodeLimit", _max_node_limit); |
17780 | 1105 #if INCLUDE_RTM_OPT |
1106 if (UseRTMLocking && has_method() && (method()->method_data_or_null() != NULL)) { | |
1107 int rtm_state = method()->method_data()->rtm_state(); | |
1108 if (method_has_option("NoRTMLockEliding") || ((rtm_state & NoRTM) != 0)) { | |
1109 // Don't generate RTM lock eliding code. | |
1110 set_rtm_state(NoRTM); | |
1111 } else if (method_has_option("UseRTMLockEliding") || ((rtm_state & UseRTM) != 0) || !UseRTMDeopt) { | |
1112 // Generate RTM lock eliding code without abort ratio calculation code. | |
1113 set_rtm_state(UseRTM); | |
1114 } else if (UseRTMDeopt) { | |
1115 // Generate RTM lock eliding code and include abort ratio calculation | |
1116 // code if UseRTMDeopt is on. | |
1117 set_rtm_state(ProfileRTM); | |
1118 } | |
1119 } | |
1120 #endif | |
0 | 1121 if (debug_info()->recording_non_safepoints()) { |
1122 set_node_note_array(new(comp_arena()) GrowableArray<Node_Notes*> | |
1123 (comp_arena(), 8, 0, NULL)); | |
1124 set_default_node_notes(Node_Notes::make(this)); | |
1125 } | |
1126 | |
1127 // // -- Initialize types before each compile -- | |
1128 // // Update cached type information | |
1129 // if( _method && _method->constants() ) | |
1130 // Type::update_loaded_types(_method, _method->constants()); | |
1131 | |
1132 // Init alias_type map. | |
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1133 if (!_do_escape_analysis && aliaslevel == 3) |
0 | 1134 aliaslevel = 2; // No unique types without escape analysis |
1135 _AliasLevel = aliaslevel; | |
1136 const int grow_ats = 16; | |
1137 _max_alias_types = grow_ats; | |
1138 _alias_types = NEW_ARENA_ARRAY(comp_arena(), AliasType*, grow_ats); | |
1139 AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, grow_ats); | |
1140 Copy::zero_to_bytes(ats, sizeof(AliasType)*grow_ats); | |
1141 { | |
1142 for (int i = 0; i < grow_ats; i++) _alias_types[i] = &ats[i]; | |
1143 } | |
1144 // Initialize the first few types. | |
1145 _alias_types[AliasIdxTop]->Init(AliasIdxTop, NULL); | |
1146 _alias_types[AliasIdxBot]->Init(AliasIdxBot, TypePtr::BOTTOM); | |
1147 _alias_types[AliasIdxRaw]->Init(AliasIdxRaw, TypeRawPtr::BOTTOM); | |
1148 _num_alias_types = AliasIdxRaw+1; | |
1149 // Zero out the alias type cache. | |
1150 Copy::zero_to_bytes(_alias_cache, sizeof(_alias_cache)); | |
1151 // A NULL adr_type hits in the cache right away. Preload the right answer. | |
1152 probe_alias_cache(NULL)->_index = AliasIdxTop; | |
1153 | |
1154 _intrinsics = NULL; | |
1685 | 1155 _macro_nodes = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); |
1156 _predicate_opaqs = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); | |
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1157 _expensive_nodes = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); |
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1158 _range_check_casts = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); |
0 | 1159 register_library_intrinsics(); |
1160 } | |
1161 | |
1162 //---------------------------init_start---------------------------------------- | |
1163 // Install the StartNode on this compile object. | |
1164 void Compile::init_start(StartNode* s) { | |
1165 if (failing()) | |
1166 return; // already failing | |
1167 assert(s == start(), ""); | |
1168 } | |
1169 | |
1170 StartNode* Compile::start() const { | |
1171 assert(!failing(), ""); | |
1172 for (DUIterator_Fast imax, i = root()->fast_outs(imax); i < imax; i++) { | |
1173 Node* start = root()->fast_out(i); | |
1174 if( start->is_Start() ) | |
1175 return start->as_Start(); | |
1176 } | |
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1177 fatal("Did not find Start node!"); |
0 | 1178 return NULL; |
1179 } | |
1180 | |
1181 //-------------------------------immutable_memory------------------------------------- | |
1182 // Access immutable memory | |
1183 Node* Compile::immutable_memory() { | |
1184 if (_immutable_memory != NULL) { | |
1185 return _immutable_memory; | |
1186 } | |
1187 StartNode* s = start(); | |
1188 for (DUIterator_Fast imax, i = s->fast_outs(imax); true; i++) { | |
1189 Node *p = s->fast_out(i); | |
1190 if (p != s && p->as_Proj()->_con == TypeFunc::Memory) { | |
1191 _immutable_memory = p; | |
1192 return _immutable_memory; | |
1193 } | |
1194 } | |
1195 ShouldNotReachHere(); | |
1196 return NULL; | |
1197 } | |
1198 | |
1199 //----------------------set_cached_top_node------------------------------------ | |
1200 // Install the cached top node, and make sure Node::is_top works correctly. | |
1201 void Compile::set_cached_top_node(Node* tn) { | |
1202 if (tn != NULL) verify_top(tn); | |
1203 Node* old_top = _top; | |
1204 _top = tn; | |
1205 // Calling Node::setup_is_top allows the nodes the chance to adjust | |
1206 // their _out arrays. | |
1207 if (_top != NULL) _top->setup_is_top(); | |
1208 if (old_top != NULL) old_top->setup_is_top(); | |
1209 assert(_top == NULL || top()->is_top(), ""); | |
1210 } | |
1211 | |
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1212 #ifdef ASSERT |
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1213 uint Compile::count_live_nodes_by_graph_walk() { |
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1214 Unique_Node_List useful(comp_arena()); |
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1215 // Get useful node list by walking the graph. |
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1216 identify_useful_nodes(useful); |
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1217 return useful.size(); |
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1218 } |
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1219 |
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1220 void Compile::print_missing_nodes() { |
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1221 |
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1222 // Return if CompileLog is NULL and PrintIdealNodeCount is false. |
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1223 if ((_log == NULL) && (! PrintIdealNodeCount)) { |
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1224 return; |
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1225 } |
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1226 |
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1227 // This is an expensive function. It is executed only when the user |
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1228 // specifies VerifyIdealNodeCount option or otherwise knows the |
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1229 // additional work that needs to be done to identify reachable nodes |
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1230 // by walking the flow graph and find the missing ones using |
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1231 // _dead_node_list. |
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1232 |
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1233 Unique_Node_List useful(comp_arena()); |
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1234 // Get useful node list by walking the graph. |
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1235 identify_useful_nodes(useful); |
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1236 |
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1237 uint l_nodes = C->live_nodes(); |
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1238 uint l_nodes_by_walk = useful.size(); |
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1239 |
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1240 if (l_nodes != l_nodes_by_walk) { |
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1241 if (_log != NULL) { |
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1242 _log->begin_head("mismatched_nodes count='%d'", abs((int) (l_nodes - l_nodes_by_walk))); |
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1243 _log->stamp(); |
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1244 _log->end_head(); |
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1245 } |
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1246 VectorSet& useful_member_set = useful.member_set(); |
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1247 int last_idx = l_nodes_by_walk; |
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1248 for (int i = 0; i < last_idx; i++) { |
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1249 if (useful_member_set.test(i)) { |
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1250 if (_dead_node_list.test(i)) { |
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1251 if (_log != NULL) { |
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1252 _log->elem("mismatched_node_info node_idx='%d' type='both live and dead'", i); |
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1253 } |
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1254 if (PrintIdealNodeCount) { |
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1255 // Print the log message to tty |
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1256 tty->print_cr("mismatched_node idx='%d' both live and dead'", i); |
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1257 useful.at(i)->dump(); |
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1258 } |
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1259 } |
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1260 } |
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1261 else if (! _dead_node_list.test(i)) { |
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1262 if (_log != NULL) { |
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1263 _log->elem("mismatched_node_info node_idx='%d' type='neither live nor dead'", i); |
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1264 } |
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1265 if (PrintIdealNodeCount) { |
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1266 // Print the log message to tty |
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1267 tty->print_cr("mismatched_node idx='%d' type='neither live nor dead'", i); |
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1268 } |
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1269 } |
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1270 } |
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1271 if (_log != NULL) { |
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1272 _log->tail("mismatched_nodes"); |
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1273 } |
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1274 } |
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1275 } |
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1276 #endif |
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1277 |
0 | 1278 #ifndef PRODUCT |
1279 void Compile::verify_top(Node* tn) const { | |
1280 if (tn != NULL) { | |
1281 assert(tn->is_Con(), "top node must be a constant"); | |
1282 assert(((ConNode*)tn)->type() == Type::TOP, "top node must have correct type"); | |
1283 assert(tn->in(0) != NULL, "must have live top node"); | |
1284 } | |
1285 } | |
1286 #endif | |
1287 | |
1288 | |
1289 ///-------------------Managing Per-Node Debug & Profile Info------------------- | |
1290 | |
1291 void Compile::grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by) { | |
1292 guarantee(arr != NULL, ""); | |
1293 int num_blocks = arr->length(); | |
1294 if (grow_by < num_blocks) grow_by = num_blocks; | |
1295 int num_notes = grow_by * _node_notes_block_size; | |
1296 Node_Notes* notes = NEW_ARENA_ARRAY(node_arena(), Node_Notes, num_notes); | |
1297 Copy::zero_to_bytes(notes, num_notes * sizeof(Node_Notes)); | |
1298 while (num_notes > 0) { | |
1299 arr->append(notes); | |
1300 notes += _node_notes_block_size; | |
1301 num_notes -= _node_notes_block_size; | |
1302 } | |
1303 assert(num_notes == 0, "exact multiple, please"); | |
1304 } | |
1305 | |
1306 bool Compile::copy_node_notes_to(Node* dest, Node* source) { | |
1307 if (source == NULL || dest == NULL) return false; | |
1308 | |
1309 if (dest->is_Con()) | |
1310 return false; // Do not push debug info onto constants. | |
1311 | |
1312 #ifdef ASSERT | |
1313 // Leave a bread crumb trail pointing to the original node: | |
1314 if (dest != NULL && dest != source && dest->debug_orig() == NULL) { | |
1315 dest->set_debug_orig(source); | |
1316 } | |
1317 #endif | |
1318 | |
1319 if (node_note_array() == NULL) | |
1320 return false; // Not collecting any notes now. | |
1321 | |
1322 // This is a copy onto a pre-existing node, which may already have notes. | |
1323 // If both nodes have notes, do not overwrite any pre-existing notes. | |
1324 Node_Notes* source_notes = node_notes_at(source->_idx); | |
1325 if (source_notes == NULL || source_notes->is_clear()) return false; | |
1326 Node_Notes* dest_notes = node_notes_at(dest->_idx); | |
1327 if (dest_notes == NULL || dest_notes->is_clear()) { | |
1328 return set_node_notes_at(dest->_idx, source_notes); | |
1329 } | |
1330 | |
1331 Node_Notes merged_notes = (*source_notes); | |
1332 // The order of operations here ensures that dest notes will win... | |
1333 merged_notes.update_from(dest_notes); | |
1334 return set_node_notes_at(dest->_idx, &merged_notes); | |
1335 } | |
1336 | |
1337 | |
1338 //--------------------------allow_range_check_smearing------------------------- | |
1339 // Gating condition for coalescing similar range checks. | |
1340 // Sometimes we try 'speculatively' replacing a series of a range checks by a | |
1341 // single covering check that is at least as strong as any of them. | |
1342 // If the optimization succeeds, the simplified (strengthened) range check | |
1343 // will always succeed. If it fails, we will deopt, and then give up | |
1344 // on the optimization. | |
1345 bool Compile::allow_range_check_smearing() const { | |
1346 // If this method has already thrown a range-check, | |
1347 // assume it was because we already tried range smearing | |
1348 // and it failed. | |
1349 uint already_trapped = trap_count(Deoptimization::Reason_range_check); | |
1350 return !already_trapped; | |
1351 } | |
1352 | |
1353 | |
1354 //------------------------------flatten_alias_type----------------------------- | |
1355 const TypePtr *Compile::flatten_alias_type( const TypePtr *tj ) const { | |
1356 int offset = tj->offset(); | |
1357 TypePtr::PTR ptr = tj->ptr(); | |
1358 | |
247 | 1359 // Known instance (scalarizable allocation) alias only with itself. |
1360 bool is_known_inst = tj->isa_oopptr() != NULL && | |
1361 tj->is_oopptr()->is_known_instance(); | |
1362 | |
0 | 1363 // Process weird unsafe references. |
1364 if (offset == Type::OffsetBot && (tj->isa_instptr() /*|| tj->isa_klassptr()*/)) { | |
1365 assert(InlineUnsafeOps, "indeterminate pointers come only from unsafe ops"); | |
247 | 1366 assert(!is_known_inst, "scalarizable allocation should not have unsafe references"); |
0 | 1367 tj = TypeOopPtr::BOTTOM; |
1368 ptr = tj->ptr(); | |
1369 offset = tj->offset(); | |
1370 } | |
1371 | |
1372 // Array pointers need some flattening | |
1373 const TypeAryPtr *ta = tj->isa_aryptr(); | |
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1374 if (ta && ta->is_stable()) { |
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1375 // Erase stability property for alias analysis. |
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1376 tj = ta = ta->cast_to_stable(false); |
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1377 } |
247 | 1378 if( ta && is_known_inst ) { |
1379 if ( offset != Type::OffsetBot && | |
1380 offset > arrayOopDesc::length_offset_in_bytes() ) { | |
1381 offset = Type::OffsetBot; // Flatten constant access into array body only | |
1382 tj = ta = TypeAryPtr::make(ptr, ta->ary(), ta->klass(), true, offset, ta->instance_id()); | |
1383 } | |
1384 } else if( ta && _AliasLevel >= 2 ) { | |
0 | 1385 // For arrays indexed by constant indices, we flatten the alias |
1386 // space to include all of the array body. Only the header, klass | |
1387 // and array length can be accessed un-aliased. | |
1388 if( offset != Type::OffsetBot ) { | |
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1389 if( ta->const_oop() ) { // MethodData* or Method* |
0 | 1390 offset = Type::OffsetBot; // Flatten constant access into array body |
247 | 1391 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),ta->ary(),ta->klass(),false,offset); |
0 | 1392 } else if( offset == arrayOopDesc::length_offset_in_bytes() ) { |
1393 // range is OK as-is. | |
1394 tj = ta = TypeAryPtr::RANGE; | |
1395 } else if( offset == oopDesc::klass_offset_in_bytes() ) { | |
1396 tj = TypeInstPtr::KLASS; // all klass loads look alike | |
1397 ta = TypeAryPtr::RANGE; // generic ignored junk | |
1398 ptr = TypePtr::BotPTR; | |
1399 } else if( offset == oopDesc::mark_offset_in_bytes() ) { | |
1400 tj = TypeInstPtr::MARK; | |
1401 ta = TypeAryPtr::RANGE; // generic ignored junk | |
1402 ptr = TypePtr::BotPTR; | |
1403 } else { // Random constant offset into array body | |
1404 offset = Type::OffsetBot; // Flatten constant access into array body | |
247 | 1405 tj = ta = TypeAryPtr::make(ptr,ta->ary(),ta->klass(),false,offset); |
0 | 1406 } |
1407 } | |
1408 // Arrays of fixed size alias with arrays of unknown size. | |
1409 if (ta->size() != TypeInt::POS) { | |
1410 const TypeAry *tary = TypeAry::make(ta->elem(), TypeInt::POS); | |
247 | 1411 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,ta->klass(),false,offset); |
0 | 1412 } |
1413 // Arrays of known objects become arrays of unknown objects. | |
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1414 if (ta->elem()->isa_narrowoop() && ta->elem() != TypeNarrowOop::BOTTOM) { |
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1415 const TypeAry *tary = TypeAry::make(TypeNarrowOop::BOTTOM, ta->size()); |
247 | 1416 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL,false,offset); |
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1417 } |
0 | 1418 if (ta->elem()->isa_oopptr() && ta->elem() != TypeInstPtr::BOTTOM) { |
1419 const TypeAry *tary = TypeAry::make(TypeInstPtr::BOTTOM, ta->size()); | |
247 | 1420 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL,false,offset); |
0 | 1421 } |
1422 // Arrays of bytes and of booleans both use 'bastore' and 'baload' so | |
1423 // cannot be distinguished by bytecode alone. | |
1424 if (ta->elem() == TypeInt::BOOL) { | |
1425 const TypeAry *tary = TypeAry::make(TypeInt::BYTE, ta->size()); | |
1426 ciKlass* aklass = ciTypeArrayKlass::make(T_BYTE); | |
247 | 1427 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,aklass,false,offset); |
0 | 1428 } |
1429 // During the 2nd round of IterGVN, NotNull castings are removed. | |
1430 // Make sure the Bottom and NotNull variants alias the same. | |
1431 // Also, make sure exact and non-exact variants alias the same. | |
12966 | 1432 if (ptr == TypePtr::NotNull || ta->klass_is_exact() || ta->speculative() != NULL) { |
3789 | 1433 tj = ta = TypeAryPtr::make(TypePtr::BotPTR,ta->ary(),ta->klass(),false,offset); |
0 | 1434 } |
1435 } | |
1436 | |
1437 // Oop pointers need some flattening | |
1438 const TypeInstPtr *to = tj->isa_instptr(); | |
1439 if( to && _AliasLevel >= 2 && to != TypeOopPtr::BOTTOM ) { | |
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1440 ciInstanceKlass *k = to->klass()->as_instance_klass(); |
0 | 1441 if( ptr == TypePtr::Constant ) { |
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1442 if (to->klass() != ciEnv::current()->Class_klass() || |
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1443 offset < k->size_helper() * wordSize) { |
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1444 // No constant oop pointers (such as Strings); they alias with |
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1445 // unknown strings. |
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1446 assert(!is_known_inst, "not scalarizable allocation"); |
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1447 tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
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1448 } |
247 | 1449 } else if( is_known_inst ) { |
163 | 1450 tj = to; // Keep NotNull and klass_is_exact for instance type |
0 | 1451 } else if( ptr == TypePtr::NotNull || to->klass_is_exact() ) { |
1452 // During the 2nd round of IterGVN, NotNull castings are removed. | |
1453 // Make sure the Bottom and NotNull variants alias the same. | |
1454 // Also, make sure exact and non-exact variants alias the same. | |
247 | 1455 tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
0 | 1456 } |
12966 | 1457 if (to->speculative() != NULL) { |
1458 tj = to = TypeInstPtr::make(to->ptr(),to->klass(),to->klass_is_exact(),to->const_oop(),to->offset(), to->instance_id()); | |
1459 } | |
0 | 1460 // Canonicalize the holder of this field |
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1461 if (offset >= 0 && offset < instanceOopDesc::base_offset_in_bytes()) { |
0 | 1462 // First handle header references such as a LoadKlassNode, even if the |
1463 // object's klass is unloaded at compile time (4965979). | |
247 | 1464 if (!is_known_inst) { // Do it only for non-instance types |
1465 tj = to = TypeInstPtr::make(TypePtr::BotPTR, env()->Object_klass(), false, NULL, offset); | |
1466 } | |
0 | 1467 } else if (offset < 0 || offset >= k->size_helper() * wordSize) { |
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1468 // Static fields are in the space above the normal instance |
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1469 // fields in the java.lang.Class instance. |
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1470 if (to->klass() != ciEnv::current()->Class_klass()) { |
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1471 to = NULL; |
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1472 tj = TypeOopPtr::BOTTOM; |
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1473 offset = tj->offset(); |
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1474 } |
0 | 1475 } else { |
1476 ciInstanceKlass *canonical_holder = k->get_canonical_holder(offset); | |
1477 if (!k->equals(canonical_holder) || tj->offset() != offset) { | |
247 | 1478 if( is_known_inst ) { |
1479 tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, true, NULL, offset, to->instance_id()); | |
1480 } else { | |
1481 tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, false, NULL, offset); | |
1482 } | |
0 | 1483 } |
1484 } | |
1485 } | |
1486 | |
1487 // Klass pointers to object array klasses need some flattening | |
1488 const TypeKlassPtr *tk = tj->isa_klassptr(); | |
1489 if( tk ) { | |
1490 // If we are referencing a field within a Klass, we need | |
1491 // to assume the worst case of an Object. Both exact and | |
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1492 // inexact types must flatten to the same alias class so |
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1493 // use NotNull as the PTR. |
0 | 1494 if ( offset == Type::OffsetBot || (offset >= 0 && (size_t)offset < sizeof(Klass)) ) { |
1495 | |
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1496 tj = tk = TypeKlassPtr::make(TypePtr::NotNull, |
0 | 1497 TypeKlassPtr::OBJECT->klass(), |
1498 offset); | |
1499 } | |
1500 | |
1501 ciKlass* klass = tk->klass(); | |
1502 if( klass->is_obj_array_klass() ) { | |
1503 ciKlass* k = TypeAryPtr::OOPS->klass(); | |
1504 if( !k || !k->is_loaded() ) // Only fails for some -Xcomp runs | |
1505 k = TypeInstPtr::BOTTOM->klass(); | |
1506 tj = tk = TypeKlassPtr::make( TypePtr::NotNull, k, offset ); | |
1507 } | |
1508 | |
1509 // Check for precise loads from the primary supertype array and force them | |
1510 // to the supertype cache alias index. Check for generic array loads from | |
1511 // the primary supertype array and also force them to the supertype cache | |
1512 // alias index. Since the same load can reach both, we need to merge | |
1513 // these 2 disparate memories into the same alias class. Since the | |
1514 // primary supertype array is read-only, there's no chance of confusion | |
1515 // where we bypass an array load and an array store. | |
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1516 int primary_supers_offset = in_bytes(Klass::primary_supers_offset()); |
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1517 if (offset == Type::OffsetBot || |
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1518 (offset >= primary_supers_offset && |
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1519 offset < (int)(primary_supers_offset + Klass::primary_super_limit() * wordSize)) || |
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1520 offset == (int)in_bytes(Klass::secondary_super_cache_offset())) { |
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1521 offset = in_bytes(Klass::secondary_super_cache_offset()); |
0 | 1522 tj = tk = TypeKlassPtr::make( TypePtr::NotNull, tk->klass(), offset ); |
1523 } | |
1524 } | |
1525 | |
1526 // Flatten all Raw pointers together. | |
1527 if (tj->base() == Type::RawPtr) | |
1528 tj = TypeRawPtr::BOTTOM; | |
1529 | |
1530 if (tj->base() == Type::AnyPtr) | |
1531 tj = TypePtr::BOTTOM; // An error, which the caller must check for. | |
1532 | |
1533 // Flatten all to bottom for now | |
1534 switch( _AliasLevel ) { | |
1535 case 0: | |
1536 tj = TypePtr::BOTTOM; | |
1537 break; | |
1538 case 1: // Flatten to: oop, static, field or array | |
1539 switch (tj->base()) { | |
1540 //case Type::AryPtr: tj = TypeAryPtr::RANGE; break; | |
1541 case Type::RawPtr: tj = TypeRawPtr::BOTTOM; break; | |
1542 case Type::AryPtr: // do not distinguish arrays at all | |
1543 case Type::InstPtr: tj = TypeInstPtr::BOTTOM; break; | |
1544 case Type::KlassPtr: tj = TypeKlassPtr::OBJECT; break; | |
1545 case Type::AnyPtr: tj = TypePtr::BOTTOM; break; // caller checks it | |
1546 default: ShouldNotReachHere(); | |
1547 } | |
1548 break; | |
605 | 1549 case 2: // No collapsing at level 2; keep all splits |
1550 case 3: // No collapsing at level 3; keep all splits | |
0 | 1551 break; |
1552 default: | |
1553 Unimplemented(); | |
1554 } | |
1555 | |
1556 offset = tj->offset(); | |
1557 assert( offset != Type::OffsetTop, "Offset has fallen from constant" ); | |
1558 | |
1559 assert( (offset != Type::OffsetBot && tj->base() != Type::AryPtr) || | |
1560 (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || | |
1561 (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || | |
1562 (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || | |
1563 (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || | |
1564 (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || | |
1565 (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr) , | |
1566 "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); | |
1567 assert( tj->ptr() != TypePtr::TopPTR && | |
1568 tj->ptr() != TypePtr::AnyNull && | |
1569 tj->ptr() != TypePtr::Null, "No imprecise addresses" ); | |
1570 // assert( tj->ptr() != TypePtr::Constant || | |
1571 // tj->base() == Type::RawPtr || | |
1572 // tj->base() == Type::KlassPtr, "No constant oop addresses" ); | |
1573 | |
1574 return tj; | |
1575 } | |
1576 | |
1577 void Compile::AliasType::Init(int i, const TypePtr* at) { | |
1578 _index = i; | |
1579 _adr_type = at; | |
1580 _field = NULL; | |
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1581 _element = NULL; |
0 | 1582 _is_rewritable = true; // default |
1583 const TypeOopPtr *atoop = (at != NULL) ? at->isa_oopptr() : NULL; | |
223 | 1584 if (atoop != NULL && atoop->is_known_instance()) { |
1585 const TypeOopPtr *gt = atoop->cast_to_instance_id(TypeOopPtr::InstanceBot); | |
0 | 1586 _general_index = Compile::current()->get_alias_index(gt); |
1587 } else { | |
1588 _general_index = 0; | |
1589 } | |
1590 } | |
1591 | |
1592 //---------------------------------print_on------------------------------------ | |
1593 #ifndef PRODUCT | |
1594 void Compile::AliasType::print_on(outputStream* st) { | |
1595 if (index() < 10) | |
1596 st->print("@ <%d> ", index()); | |
1597 else st->print("@ <%d>", index()); | |
1598 st->print(is_rewritable() ? " " : " RO"); | |
1599 int offset = adr_type()->offset(); | |
1600 if (offset == Type::OffsetBot) | |
1601 st->print(" +any"); | |
1602 else st->print(" +%-3d", offset); | |
1603 st->print(" in "); | |
1604 adr_type()->dump_on(st); | |
1605 const TypeOopPtr* tjp = adr_type()->isa_oopptr(); | |
1606 if (field() != NULL && tjp) { | |
1607 if (tjp->klass() != field()->holder() || | |
1608 tjp->offset() != field()->offset_in_bytes()) { | |
1609 st->print(" != "); | |
1610 field()->print(); | |
1611 st->print(" ***"); | |
1612 } | |
1613 } | |
1614 } | |
1615 | |
1616 void print_alias_types() { | |
1617 Compile* C = Compile::current(); | |
1618 tty->print_cr("--- Alias types, AliasIdxBot .. %d", C->num_alias_types()-1); | |
1619 for (int idx = Compile::AliasIdxBot; idx < C->num_alias_types(); idx++) { | |
1620 C->alias_type(idx)->print_on(tty); | |
1621 tty->cr(); | |
1622 } | |
1623 } | |
1624 #endif | |
1625 | |
1626 | |
1627 //----------------------------probe_alias_cache-------------------------------- | |
1628 Compile::AliasCacheEntry* Compile::probe_alias_cache(const TypePtr* adr_type) { | |
1629 intptr_t key = (intptr_t) adr_type; | |
1630 key ^= key >> logAliasCacheSize; | |
1631 return &_alias_cache[key & right_n_bits(logAliasCacheSize)]; | |
1632 } | |
1633 | |
1634 | |
1635 //-----------------------------grow_alias_types-------------------------------- | |
1636 void Compile::grow_alias_types() { | |
1637 const int old_ats = _max_alias_types; // how many before? | |
1638 const int new_ats = old_ats; // how many more? | |
1639 const int grow_ats = old_ats+new_ats; // how many now? | |
1640 _max_alias_types = grow_ats; | |
1641 _alias_types = REALLOC_ARENA_ARRAY(comp_arena(), AliasType*, _alias_types, old_ats, grow_ats); | |
1642 AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, new_ats); | |
1643 Copy::zero_to_bytes(ats, sizeof(AliasType)*new_ats); | |
1644 for (int i = 0; i < new_ats; i++) _alias_types[old_ats+i] = &ats[i]; | |
1645 } | |
1646 | |
1647 | |
1648 //--------------------------------find_alias_type------------------------------ | |
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1649 Compile::AliasType* Compile::find_alias_type(const TypePtr* adr_type, bool no_create, ciField* original_field) { |
0 | 1650 if (_AliasLevel == 0) |
1651 return alias_type(AliasIdxBot); | |
1652 | |
1653 AliasCacheEntry* ace = probe_alias_cache(adr_type); | |
1654 if (ace->_adr_type == adr_type) { | |
1655 return alias_type(ace->_index); | |
1656 } | |
1657 | |
1658 // Handle special cases. | |
1659 if (adr_type == NULL) return alias_type(AliasIdxTop); | |
1660 if (adr_type == TypePtr::BOTTOM) return alias_type(AliasIdxBot); | |
1661 | |
1662 // Do it the slow way. | |
1663 const TypePtr* flat = flatten_alias_type(adr_type); | |
1664 | |
1665 #ifdef ASSERT | |
1666 assert(flat == flatten_alias_type(flat), "idempotent"); | |
1667 assert(flat != TypePtr::BOTTOM, "cannot alias-analyze an untyped ptr"); | |
1668 if (flat->isa_oopptr() && !flat->isa_klassptr()) { | |
1669 const TypeOopPtr* foop = flat->is_oopptr(); | |
247 | 1670 // Scalarizable allocations have exact klass always. |
1671 bool exact = !foop->klass_is_exact() || foop->is_known_instance(); | |
1672 const TypePtr* xoop = foop->cast_to_exactness(exact)->is_ptr(); | |
0 | 1673 assert(foop == flatten_alias_type(xoop), "exactness must not affect alias type"); |
1674 } | |
1675 assert(flat == flatten_alias_type(flat), "exact bit doesn't matter"); | |
1676 #endif | |
1677 | |
1678 int idx = AliasIdxTop; | |
1679 for (int i = 0; i < num_alias_types(); i++) { | |
1680 if (alias_type(i)->adr_type() == flat) { | |
1681 idx = i; | |
1682 break; | |
1683 } | |
1684 } | |
1685 | |
1686 if (idx == AliasIdxTop) { | |
1687 if (no_create) return NULL; | |
1688 // Grow the array if necessary. | |
1689 if (_num_alias_types == _max_alias_types) grow_alias_types(); | |
1690 // Add a new alias type. | |
1691 idx = _num_alias_types++; | |
1692 _alias_types[idx]->Init(idx, flat); | |
1693 if (flat == TypeInstPtr::KLASS) alias_type(idx)->set_rewritable(false); | |
1694 if (flat == TypeAryPtr::RANGE) alias_type(idx)->set_rewritable(false); | |
1695 if (flat->isa_instptr()) { | |
1696 if (flat->offset() == java_lang_Class::klass_offset_in_bytes() | |
1697 && flat->is_instptr()->klass() == env()->Class_klass()) | |
1698 alias_type(idx)->set_rewritable(false); | |
1699 } | |
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1700 if (flat->isa_aryptr()) { |
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1701 #ifdef ASSERT |
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1702 const int header_size_min = arrayOopDesc::base_offset_in_bytes(T_BYTE); |
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1703 // (T_BYTE has the weakest alignment and size restrictions...) |
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1704 assert(flat->offset() < header_size_min, "array body reference must be OffsetBot"); |
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1705 #endif |
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1706 if (flat->offset() == TypePtr::OffsetBot) { |
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1707 alias_type(idx)->set_element(flat->is_aryptr()->elem()); |
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1708 } |
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1709 } |
0 | 1710 if (flat->isa_klassptr()) { |
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1711 if (flat->offset() == in_bytes(Klass::super_check_offset_offset())) |
0 | 1712 alias_type(idx)->set_rewritable(false); |
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1713 if (flat->offset() == in_bytes(Klass::modifier_flags_offset())) |
0 | 1714 alias_type(idx)->set_rewritable(false); |
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1715 if (flat->offset() == in_bytes(Klass::access_flags_offset())) |
0 | 1716 alias_type(idx)->set_rewritable(false); |
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1717 if (flat->offset() == in_bytes(Klass::java_mirror_offset())) |
0 | 1718 alias_type(idx)->set_rewritable(false); |
1719 } | |
1720 // %%% (We would like to finalize JavaThread::threadObj_offset(), | |
1721 // but the base pointer type is not distinctive enough to identify | |
1722 // references into JavaThread.) | |
1723 | |
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1724 // Check for final fields. |
0 | 1725 const TypeInstPtr* tinst = flat->isa_instptr(); |
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1726 if (tinst && tinst->offset() >= instanceOopDesc::base_offset_in_bytes()) { |
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1727 ciField* field; |
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1728 if (tinst->const_oop() != NULL && |
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1729 tinst->klass() == ciEnv::current()->Class_klass() && |
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1730 tinst->offset() >= (tinst->klass()->as_instance_klass()->size_helper() * wordSize)) { |
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1731 // static field |
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1732 ciInstanceKlass* k = tinst->const_oop()->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
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1733 field = k->get_field_by_offset(tinst->offset(), true); |
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1734 } else { |
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1735 ciInstanceKlass *k = tinst->klass()->as_instance_klass(); |
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1736 field = k->get_field_by_offset(tinst->offset(), false); |
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1737 } |
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1738 assert(field == NULL || |
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1739 original_field == NULL || |
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1740 (field->holder() == original_field->holder() && |
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1741 field->offset() == original_field->offset() && |
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1742 field->is_static() == original_field->is_static()), "wrong field?"); |
0 | 1743 // Set field() and is_rewritable() attributes. |
1744 if (field != NULL) alias_type(idx)->set_field(field); | |
1745 } | |
1746 } | |
1747 | |
1748 // Fill the cache for next time. | |
1749 ace->_adr_type = adr_type; | |
1750 ace->_index = idx; | |
1751 assert(alias_type(adr_type) == alias_type(idx), "type must be installed"); | |
1752 | |
1753 // Might as well try to fill the cache for the flattened version, too. | |
1754 AliasCacheEntry* face = probe_alias_cache(flat); | |
1755 if (face->_adr_type == NULL) { | |
1756 face->_adr_type = flat; | |
1757 face->_index = idx; | |
1758 assert(alias_type(flat) == alias_type(idx), "flat type must work too"); | |
1759 } | |
1760 | |
1761 return alias_type(idx); | |
1762 } | |
1763 | |
1764 | |
1765 Compile::AliasType* Compile::alias_type(ciField* field) { | |
1766 const TypeOopPtr* t; | |
1767 if (field->is_static()) | |
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1768 t = TypeInstPtr::make(field->holder()->java_mirror()); |
0 | 1769 else |
1770 t = TypeOopPtr::make_from_klass_raw(field->holder()); | |
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1771 AliasType* atp = alias_type(t->add_offset(field->offset_in_bytes()), field); |
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1772 assert((field->is_final() || field->is_stable()) == !atp->is_rewritable(), "must get the rewritable bits correct"); |
0 | 1773 return atp; |
1774 } | |
1775 | |
1776 | |
1777 //------------------------------have_alias_type-------------------------------- | |
1778 bool Compile::have_alias_type(const TypePtr* adr_type) { | |
1779 AliasCacheEntry* ace = probe_alias_cache(adr_type); | |
1780 if (ace->_adr_type == adr_type) { | |
1781 return true; | |
1782 } | |
1783 | |
1784 // Handle special cases. | |
1785 if (adr_type == NULL) return true; | |
1786 if (adr_type == TypePtr::BOTTOM) return true; | |
1787 | |
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1788 return find_alias_type(adr_type, true, NULL) != NULL; |
0 | 1789 } |
1790 | |
1791 //-----------------------------must_alias-------------------------------------- | |
1792 // True if all values of the given address type are in the given alias category. | |
1793 bool Compile::must_alias(const TypePtr* adr_type, int alias_idx) { | |
1794 if (alias_idx == AliasIdxBot) return true; // the universal category | |
1795 if (adr_type == NULL) return true; // NULL serves as TypePtr::TOP | |
1796 if (alias_idx == AliasIdxTop) return false; // the empty category | |
1797 if (adr_type->base() == Type::AnyPtr) return false; // TypePtr::BOTTOM or its twins | |
1798 | |
1799 // the only remaining possible overlap is identity | |
1800 int adr_idx = get_alias_index(adr_type); | |
1801 assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, ""); | |
1802 assert(adr_idx == alias_idx || | |
1803 (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM | |
1804 && adr_type != TypeOopPtr::BOTTOM), | |
1805 "should not be testing for overlap with an unsafe pointer"); | |
1806 return adr_idx == alias_idx; | |
1807 } | |
1808 | |
1809 //------------------------------can_alias-------------------------------------- | |
1810 // True if any values of the given address type are in the given alias category. | |
1811 bool Compile::can_alias(const TypePtr* adr_type, int alias_idx) { | |
1812 if (alias_idx == AliasIdxTop) return false; // the empty category | |
1813 if (adr_type == NULL) return false; // NULL serves as TypePtr::TOP | |
1814 if (alias_idx == AliasIdxBot) return true; // the universal category | |
1815 if (adr_type->base() == Type::AnyPtr) return true; // TypePtr::BOTTOM or its twins | |
1816 | |
1817 // the only remaining possible overlap is identity | |
1818 int adr_idx = get_alias_index(adr_type); | |
1819 assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, ""); | |
1820 return adr_idx == alias_idx; | |
1821 } | |
1822 | |
1823 | |
1824 | |
1825 //---------------------------pop_warm_call------------------------------------- | |
1826 WarmCallInfo* Compile::pop_warm_call() { | |
1827 WarmCallInfo* wci = _warm_calls; | |
1828 if (wci != NULL) _warm_calls = wci->remove_from(wci); | |
1829 return wci; | |
1830 } | |
1831 | |
1832 //----------------------------Inline_Warm-------------------------------------- | |
1833 int Compile::Inline_Warm() { | |
1834 // If there is room, try to inline some more warm call sites. | |
1835 // %%% Do a graph index compaction pass when we think we're out of space? | |
1836 if (!InlineWarmCalls) return 0; | |
1837 | |
1838 int calls_made_hot = 0; | |
1839 int room_to_grow = NodeCountInliningCutoff - unique(); | |
1840 int amount_to_grow = MIN2(room_to_grow, (int)NodeCountInliningStep); | |
1841 int amount_grown = 0; | |
1842 WarmCallInfo* call; | |
1843 while (amount_to_grow > 0 && (call = pop_warm_call()) != NULL) { | |
1844 int est_size = (int)call->size(); | |
1845 if (est_size > (room_to_grow - amount_grown)) { | |
1846 // This one won't fit anyway. Get rid of it. | |
1847 call->make_cold(); | |
1848 continue; | |
1849 } | |
1850 call->make_hot(); | |
1851 calls_made_hot++; | |
1852 amount_grown += est_size; | |
1853 amount_to_grow -= est_size; | |
1854 } | |
1855 | |
1856 if (calls_made_hot > 0) set_major_progress(); | |
1857 return calls_made_hot; | |
1858 } | |
1859 | |
1860 | |
1861 //----------------------------Finish_Warm-------------------------------------- | |
1862 void Compile::Finish_Warm() { | |
1863 if (!InlineWarmCalls) return; | |
1864 if (failing()) return; | |
1865 if (warm_calls() == NULL) return; | |
1866 | |
1867 // Clean up loose ends, if we are out of space for inlining. | |
1868 WarmCallInfo* call; | |
1869 while ((call = pop_warm_call()) != NULL) { | |
1870 call->make_cold(); | |
1871 } | |
1872 } | |
1873 | |
1172 | 1874 //---------------------cleanup_loop_predicates----------------------- |
1875 // Remove the opaque nodes that protect the predicates so that all unused | |
1876 // checks and uncommon_traps will be eliminated from the ideal graph | |
1877 void Compile::cleanup_loop_predicates(PhaseIterGVN &igvn) { | |
1878 if (predicate_count()==0) return; | |
1879 for (int i = predicate_count(); i > 0; i--) { | |
1880 Node * n = predicate_opaque1_node(i-1); | |
1881 assert(n->Opcode() == Op_Opaque1, "must be"); | |
1882 igvn.replace_node(n, n->in(1)); | |
1883 } | |
1884 assert(predicate_count()==0, "should be clean!"); | |
1885 } | |
0 | 1886 |
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1887 void Compile::add_range_check_cast(Node* n) { |
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1888 assert(n->isa_CastII()->has_range_check(), "CastII should have range check dependency"); |
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1889 assert(!_range_check_casts->contains(n), "duplicate entry in range check casts"); |
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1890 _range_check_casts->append(n); |
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1891 } |
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1892 |
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1893 // Remove all range check dependent CastIINodes. |
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1894 void Compile::remove_range_check_casts(PhaseIterGVN &igvn) { |
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1895 for (int i = range_check_cast_count(); i > 0; i--) { |
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1896 Node* cast = range_check_cast_node(i-1); |
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1897 assert(cast->isa_CastII()->has_range_check(), "CastII should have range check dependency"); |
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1898 igvn.replace_node(cast, cast->in(1)); |
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1899 } |
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1900 assert(range_check_cast_count() == 0, "should be empty"); |
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1901 } |
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1902 |
7473 | 1903 // StringOpts and late inlining of string methods |
1904 void Compile::inline_string_calls(bool parse_time) { | |
1905 { | |
1906 // remove useless nodes to make the usage analysis simpler | |
1907 ResourceMark rm; | |
1908 PhaseRemoveUseless pru(initial_gvn(), for_igvn()); | |
1909 } | |
1910 | |
1911 { | |
1912 ResourceMark rm; | |
10405 | 1913 print_method(PHASE_BEFORE_STRINGOPTS, 3); |
7473 | 1914 PhaseStringOpts pso(initial_gvn(), for_igvn()); |
10405 | 1915 print_method(PHASE_AFTER_STRINGOPTS, 3); |
7473 | 1916 } |
1917 | |
1918 // now inline anything that we skipped the first time around | |
1919 if (!parse_time) { | |
1920 _late_inlines_pos = _late_inlines.length(); | |
1921 } | |
1922 | |
1923 while (_string_late_inlines.length() > 0) { | |
1924 CallGenerator* cg = _string_late_inlines.pop(); | |
1925 cg->do_late_inline(); | |
1926 if (failing()) return; | |
1927 } | |
1928 _string_late_inlines.trunc_to(0); | |
1929 } | |
1930 | |
10278 | 1931 // Late inlining of boxing methods |
1932 void Compile::inline_boxing_calls(PhaseIterGVN& igvn) { | |
1933 if (_boxing_late_inlines.length() > 0) { | |
1934 assert(has_boxed_value(), "inconsistent"); | |
1935 | |
1936 PhaseGVN* gvn = initial_gvn(); | |
1937 set_inlining_incrementally(true); | |
1938 | |
1939 assert( igvn._worklist.size() == 0, "should be done with igvn" ); | |
1940 for_igvn()->clear(); | |
1941 gvn->replace_with(&igvn); | |
1942 | |
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1943 _late_inlines_pos = _late_inlines.length(); |
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1944 |
10278 | 1945 while (_boxing_late_inlines.length() > 0) { |
1946 CallGenerator* cg = _boxing_late_inlines.pop(); | |
1947 cg->do_late_inline(); | |
1948 if (failing()) return; | |
1949 } | |
1950 _boxing_late_inlines.trunc_to(0); | |
1951 | |
1952 { | |
1953 ResourceMark rm; | |
1954 PhaseRemoveUseless pru(gvn, for_igvn()); | |
1955 } | |
1956 | |
1957 igvn = PhaseIterGVN(gvn); | |
1958 igvn.optimize(); | |
1959 | |
1960 set_inlining_progress(false); | |
1961 set_inlining_incrementally(false); | |
1962 } | |
1963 } | |
1964 | |
7473 | 1965 void Compile::inline_incrementally_one(PhaseIterGVN& igvn) { |
1966 assert(IncrementalInline, "incremental inlining should be on"); | |
1967 PhaseGVN* gvn = initial_gvn(); | |
1968 | |
1969 set_inlining_progress(false); | |
1970 for_igvn()->clear(); | |
1971 gvn->replace_with(&igvn); | |
1972 | |
1973 int i = 0; | |
1974 | |
1975 for (; i <_late_inlines.length() && !inlining_progress(); i++) { | |
1976 CallGenerator* cg = _late_inlines.at(i); | |
1977 _late_inlines_pos = i+1; | |
1978 cg->do_late_inline(); | |
1979 if (failing()) return; | |
1980 } | |
1981 int j = 0; | |
1982 for (; i < _late_inlines.length(); i++, j++) { | |
1983 _late_inlines.at_put(j, _late_inlines.at(i)); | |
1984 } | |
1985 _late_inlines.trunc_to(j); | |
1986 | |
1987 { | |
1988 ResourceMark rm; | |
10278 | 1989 PhaseRemoveUseless pru(gvn, for_igvn()); |
7473 | 1990 } |
1991 | |
1992 igvn = PhaseIterGVN(gvn); | |
1993 } | |
1994 | |
1995 // Perform incremental inlining until bound on number of live nodes is reached | |
1996 void Compile::inline_incrementally(PhaseIterGVN& igvn) { | |
1997 PhaseGVN* gvn = initial_gvn(); | |
1998 | |
1999 set_inlining_incrementally(true); | |
2000 set_inlining_progress(true); | |
2001 uint low_live_nodes = 0; | |
2002 | |
2003 while(inlining_progress() && _late_inlines.length() > 0) { | |
2004 | |
2005 if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { | |
2006 if (low_live_nodes < (uint)LiveNodeCountInliningCutoff * 8 / 10) { | |
2007 // PhaseIdealLoop is expensive so we only try it once we are | |
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2008 // out of live nodes and we only try it again if the previous |
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2009 // helped got the number of nodes down significantly |
7473 | 2010 PhaseIdealLoop ideal_loop( igvn, false, true ); |
2011 if (failing()) return; | |
2012 low_live_nodes = live_nodes(); | |
2013 _major_progress = true; | |
2014 } | |
2015 | |
2016 if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { | |
2017 break; | |
2018 } | |
2019 } | |
2020 | |
2021 inline_incrementally_one(igvn); | |
2022 | |
2023 if (failing()) return; | |
2024 | |
2025 igvn.optimize(); | |
2026 | |
2027 if (failing()) return; | |
2028 } | |
2029 | |
2030 assert( igvn._worklist.size() == 0, "should be done with igvn" ); | |
2031 | |
2032 if (_string_late_inlines.length() > 0) { | |
2033 assert(has_stringbuilder(), "inconsistent"); | |
2034 for_igvn()->clear(); | |
2035 initial_gvn()->replace_with(&igvn); | |
2036 | |
2037 inline_string_calls(false); | |
2038 | |
2039 if (failing()) return; | |
2040 | |
2041 { | |
2042 ResourceMark rm; | |
2043 PhaseRemoveUseless pru(initial_gvn(), for_igvn()); | |
2044 } | |
2045 | |
2046 igvn = PhaseIterGVN(gvn); | |
2047 | |
2048 igvn.optimize(); | |
2049 } | |
2050 | |
2051 set_inlining_incrementally(false); | |
2052 } | |
2053 | |
2054 | |
0 | 2055 //------------------------------Optimize--------------------------------------- |
2056 // Given a graph, optimize it. | |
2057 void Compile::Optimize() { | |
2058 TracePhase t1("optimizer", &_t_optimizer, true); | |
2059 | |
2060 #ifndef PRODUCT | |
2061 if (env()->break_at_compile()) { | |
2062 BREAKPOINT; | |
2063 } | |
2064 | |
2065 #endif | |
2066 | |
2067 ResourceMark rm; | |
2068 int loop_opts_cnt; | |
2069 | |
2070 NOT_PRODUCT( verify_graph_edges(); ) | |
2071 | |
10405 | 2072 print_method(PHASE_AFTER_PARSING); |
0 | 2073 |
2074 { | |
2075 // Iterative Global Value Numbering, including ideal transforms | |
2076 // Initialize IterGVN with types and values from parse-time GVN | |
2077 PhaseIterGVN igvn(initial_gvn()); | |
2078 { | |
2079 NOT_PRODUCT( TracePhase t2("iterGVN", &_t_iterGVN, TimeCompiler); ) | |
2080 igvn.optimize(); | |
2081 } | |
2082 | |
10405 | 2083 print_method(PHASE_ITER_GVN1, 2); |
0 | 2084 |
2085 if (failing()) return; | |
2086 | |
10278 | 2087 { |
2088 NOT_PRODUCT( TracePhase t2("incrementalInline", &_t_incrInline, TimeCompiler); ) | |
2089 inline_incrementally(igvn); | |
2090 } | |
7473 | 2091 |
10405 | 2092 print_method(PHASE_INCREMENTAL_INLINE, 2); |
7473 | 2093 |
2094 if (failing()) return; | |
2095 | |
10278 | 2096 if (eliminate_boxing()) { |
2097 NOT_PRODUCT( TracePhase t2("incrementalInline", &_t_incrInline, TimeCompiler); ) | |
2098 // Inline valueOf() methods now. | |
2099 inline_boxing_calls(igvn); | |
2100 | |
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2101 if (AlwaysIncrementalInline) { |
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2102 inline_incrementally(igvn); |
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2103 } |
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2104 |
10405 | 2105 print_method(PHASE_INCREMENTAL_BOXING_INLINE, 2); |
10278 | 2106 |
2107 if (failing()) return; | |
2108 } | |
2109 | |
12966 | 2110 // Remove the speculative part of types and clean up the graph from |
2111 // the extra CastPP nodes whose only purpose is to carry them. Do | |
2112 // that early so that optimizations are not disrupted by the extra | |
2113 // CastPP nodes. | |
2114 remove_speculative_types(igvn); | |
2115 | |
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2116 // No more new expensive nodes will be added to the list from here |
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2117 // so keep only the actual candidates for optimizations. |
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2118 cleanup_expensive_nodes(igvn); |
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2119 |
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2120 if (!failing() && RenumberLiveNodes && live_nodes() + NodeLimitFudgeFactor < unique()) { |
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2121 NOT_PRODUCT(Compile::TracePhase t2("", &_t_renumberLive, TimeCompiler);) |
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2122 initial_gvn()->replace_with(&igvn); |
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2123 for_igvn()->clear(); |
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2124 Unique_Node_List new_worklist(C->comp_arena()); |
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2125 { |
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2126 ResourceMark rm; |
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2127 PhaseRenumberLive prl = PhaseRenumberLive(initial_gvn(), for_igvn(), &new_worklist); |
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2128 } |
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2129 set_for_igvn(&new_worklist); |
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2130 igvn = PhaseIterGVN(initial_gvn()); |
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2131 igvn.optimize(); |
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2132 } |
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2133 |
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|
2134 // Perform escape analysis |
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|
2135 if (_do_escape_analysis && ConnectionGraph::has_candidates(this)) { |
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2136 if (has_loops()) { |
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2137 // Cleanup graph (remove dead nodes). |
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2138 TracePhase t2("idealLoop", &_t_idealLoop, true); |
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2139 PhaseIdealLoop ideal_loop( igvn, false, true ); |
10405 | 2140 if (major_progress()) print_method(PHASE_PHASEIDEAL_BEFORE_EA, 2); |
4064
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2141 if (failing()) return; |
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|
2142 } |
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2143 ConnectionGraph::do_analysis(this, &igvn); |
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|
2144 |
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|
2145 if (failing()) return; |
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2146 |
4115 | 2147 // Optimize out fields loads from scalar replaceable allocations. |
1634
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2148 igvn.optimize(); |
10405 | 2149 print_method(PHASE_ITER_GVN_AFTER_EA, 2); |
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2150 |
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|
2151 if (failing()) return; |
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2152 |
4115 | 2153 if (congraph() != NULL && macro_count() > 0) { |
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2154 NOT_PRODUCT( TracePhase t2("macroEliminate", &_t_macroEliminate, TimeCompiler); ) |
4115 | 2155 PhaseMacroExpand mexp(igvn); |
2156 mexp.eliminate_macro_nodes(); | |
2157 igvn.set_delay_transform(false); | |
2158 | |
2159 igvn.optimize(); | |
10405 | 2160 print_method(PHASE_ITER_GVN_AFTER_ELIMINATION, 2); |
4115 | 2161 |
2162 if (failing()) return; | |
2163 } | |
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2164 } |
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2165 |
0 | 2166 // Loop transforms on the ideal graph. Range Check Elimination, |
2167 // peeling, unrolling, etc. | |
2168 | |
2169 // Set loop opts counter | |
2170 loop_opts_cnt = num_loop_opts(); | |
2171 if((loop_opts_cnt > 0) && (has_loops() || has_split_ifs())) { | |
2172 { | |
2173 TracePhase t2("idealLoop", &_t_idealLoop, true); | |
2445 | 2174 PhaseIdealLoop ideal_loop( igvn, true ); |
0 | 2175 loop_opts_cnt--; |
10405 | 2176 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP1, 2); |
0 | 2177 if (failing()) return; |
2178 } | |
2179 // Loop opts pass if partial peeling occurred in previous pass | |
2180 if(PartialPeelLoop && major_progress() && (loop_opts_cnt > 0)) { | |
2181 TracePhase t3("idealLoop", &_t_idealLoop, true); | |
2445 | 2182 PhaseIdealLoop ideal_loop( igvn, false ); |
0 | 2183 loop_opts_cnt--; |
10405 | 2184 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP2, 2); |
0 | 2185 if (failing()) return; |
2186 } | |
2187 // Loop opts pass for loop-unrolling before CCP | |
2188 if(major_progress() && (loop_opts_cnt > 0)) { | |
2189 TracePhase t4("idealLoop", &_t_idealLoop, true); | |
2445 | 2190 PhaseIdealLoop ideal_loop( igvn, false ); |
0 | 2191 loop_opts_cnt--; |
10405 | 2192 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP3, 2); |
0 | 2193 } |
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2194 if (!failing()) { |
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2195 // Verify that last round of loop opts produced a valid graph |
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2196 NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); ) |
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2197 PhaseIdealLoop::verify(igvn); |
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2198 } |
0 | 2199 } |
2200 if (failing()) return; | |
2201 | |
2202 // Conditional Constant Propagation; | |
2203 PhaseCCP ccp( &igvn ); | |
2204 assert( true, "Break here to ccp.dump_nodes_and_types(_root,999,1)"); | |
2205 { | |
2206 TracePhase t2("ccp", &_t_ccp, true); | |
2207 ccp.do_transform(); | |
2208 } | |
10405 | 2209 print_method(PHASE_CPP1, 2); |
0 | 2210 |
2211 assert( true, "Break here to ccp.dump_old2new_map()"); | |
2212 | |
2213 // Iterative Global Value Numbering, including ideal transforms | |
2214 { | |
2215 NOT_PRODUCT( TracePhase t2("iterGVN2", &_t_iterGVN2, TimeCompiler); ) | |
2216 igvn = ccp; | |
2217 igvn.optimize(); | |
2218 } | |
2219 | |
10405 | 2220 print_method(PHASE_ITER_GVN2, 2); |
0 | 2221 |
2222 if (failing()) return; | |
2223 | |
2224 // Loop transforms on the ideal graph. Range Check Elimination, | |
2225 // peeling, unrolling, etc. | |
2226 if(loop_opts_cnt > 0) { | |
2227 debug_only( int cnt = 0; ); | |
2228 while(major_progress() && (loop_opts_cnt > 0)) { | |
2229 TracePhase t2("idealLoop", &_t_idealLoop, true); | |
2230 assert( cnt++ < 40, "infinite cycle in loop optimization" ); | |
2445 | 2231 PhaseIdealLoop ideal_loop( igvn, true); |
0 | 2232 loop_opts_cnt--; |
10405 | 2233 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP_ITERATIONS, 2); |
0 | 2234 if (failing()) return; |
2235 } | |
2236 } | |
921
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
changeset
|
2237 |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
changeset
|
2238 { |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
859
diff
changeset
|
2239 // Verify that all previous optimizations produced a valid graph |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
859
diff
changeset
|
2240 // at least to this point, even if no loop optimizations were done. |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
changeset
|
2241 NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); ) |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
changeset
|
2242 PhaseIdealLoop::verify(igvn); |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
859
diff
changeset
|
2243 } |
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
859
diff
changeset
|
2244 |
23799
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
2245 if (range_check_cast_count() > 0) { |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
2246 // No more loop optimizations. Remove all range check dependent CastIINodes. |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
2247 C->remove_range_check_casts(igvn); |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
2248 igvn.optimize(); |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
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parents:
23471
diff
changeset
|
2249 } |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
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diff
changeset
|
2250 |
0 | 2251 { |
2252 NOT_PRODUCT( TracePhase t2("macroExpand", &_t_macroExpand, TimeCompiler); ) | |
2253 PhaseMacroExpand mex(igvn); | |
2254 if (mex.expand_macro_nodes()) { | |
2255 assert(failing(), "must bail out w/ explicit message"); | |
2256 return; | |
2257 } | |
2258 } | |
2259 | |
2260 } // (End scope of igvn; run destructor if necessary for asserts.) | |
2261 | |
7605 | 2262 dump_inlining(); |
0 | 2263 // A method with only infinite loops has no edges entering loops from root |
2264 { | |
2265 NOT_PRODUCT( TracePhase t2("graphReshape", &_t_graphReshaping, TimeCompiler); ) | |
2266 if (final_graph_reshaping()) { | |
2267 assert(failing(), "must bail out w/ explicit message"); | |
2268 return; | |
2269 } | |
2270 } | |
2271 | |
10405 | 2272 print_method(PHASE_OPTIMIZE_FINISHED, 2); |
0 | 2273 } |
2274 | |
2275 | |
2276 //------------------------------Code_Gen--------------------------------------- | |
2277 // Given a graph, generate code for it | |
2278 void Compile::Code_Gen() { | |
12071
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8023003: Cleanup the public interface to PhaseCFG
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diff
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|
2279 if (failing()) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
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diff
changeset
|
2280 return; |
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8023003: Cleanup the public interface to PhaseCFG
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diff
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|
2281 } |
0 | 2282 |
2283 // Perform instruction selection. You might think we could reclaim Matcher | |
2284 // memory PDQ, but actually the Matcher is used in generating spill code. | |
2285 // Internals of the Matcher (including some VectorSets) must remain live | |
2286 // for awhile - thus I cannot reclaim Matcher memory lest a VectorSet usage | |
2287 // set a bit in reclaimed memory. | |
2288 | |
2289 // In debug mode can dump m._nodes.dump() for mapping of ideal to machine | |
2290 // nodes. Mapping is only valid at the root of each matched subtree. | |
2291 NOT_PRODUCT( verify_graph_edges(); ) | |
2292 | |
12071
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8023003: Cleanup the public interface to PhaseCFG
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12023
diff
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|
2293 Matcher matcher; |
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8023003: Cleanup the public interface to PhaseCFG
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diff
changeset
|
2294 _matcher = &matcher; |
0 | 2295 { |
2296 TracePhase t2("matcher", &_t_matcher, true); | |
12071
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8023003: Cleanup the public interface to PhaseCFG
adlertz
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diff
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|
2297 matcher.match(); |
0 | 2298 } |
2299 // In debug mode can dump m._nodes.dump() for mapping of ideal to machine | |
2300 // nodes. Mapping is only valid at the root of each matched subtree. | |
2301 NOT_PRODUCT( verify_graph_edges(); ) | |
2302 | |
2303 // If you have too many nodes, or if matching has failed, bail out | |
2304 check_node_count(0, "out of nodes matching instructions"); | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2305 if (failing()) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2306 return; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
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diff
changeset
|
2307 } |
0 | 2308 |
2309 // Build a proper-looking CFG | |
12071
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8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2310 PhaseCFG cfg(node_arena(), root(), matcher); |
0 | 2311 _cfg = &cfg; |
2312 { | |
2313 NOT_PRODUCT( TracePhase t2("scheduler", &_t_scheduler, TimeCompiler); ) | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2314 bool success = cfg.do_global_code_motion(); |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2315 if (!success) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
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12023
diff
changeset
|
2316 return; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2317 } |
0 | 2318 |
10405 | 2319 print_method(PHASE_GLOBAL_CODE_MOTION, 2); |
0 | 2320 NOT_PRODUCT( verify_graph_edges(); ) |
2321 debug_only( cfg.verify(); ) | |
2322 } | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2323 |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
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diff
changeset
|
2324 PhaseChaitin regalloc(unique(), cfg, matcher); |
0 | 2325 _regalloc = ®alloc; |
2326 { | |
2327 TracePhase t2("regalloc", &_t_registerAllocation, true); | |
2328 // Perform register allocation. After Chaitin, use-def chains are | |
2329 // no longer accurate (at spill code) and so must be ignored. | |
2330 // Node->LRG->reg mappings are still accurate. | |
2331 _regalloc->Register_Allocate(); | |
2332 | |
2333 // Bail out if the allocator builds too many nodes | |
10111 | 2334 if (failing()) { |
2335 return; | |
2336 } | |
0 | 2337 } |
2338 | |
2339 // Prior to register allocation we kept empty basic blocks in case the | |
2340 // the allocator needed a place to spill. After register allocation we | |
2341 // are not adding any new instructions. If any basic block is empty, we | |
2342 // can now safely remove it. | |
2343 { | |
418 | 2344 NOT_PRODUCT( TracePhase t2("blockOrdering", &_t_blockOrdering, TimeCompiler); ) |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2345 cfg.remove_empty_blocks(); |
418 | 2346 if (do_freq_based_layout()) { |
2347 PhaseBlockLayout layout(cfg); | |
2348 } else { | |
2349 cfg.set_loop_alignment(); | |
2350 } | |
2351 cfg.fixup_flow(); | |
0 | 2352 } |
2353 | |
2354 // Apply peephole optimizations | |
2355 if( OptoPeephole ) { | |
2356 NOT_PRODUCT( TracePhase t2("peephole", &_t_peephole, TimeCompiler); ) | |
2357 PhasePeephole peep( _regalloc, cfg); | |
2358 peep.do_transform(); | |
2359 } | |
2360 | |
14428
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2361 // Do late expand if CPU requires this. |
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2362 if (Matcher::require_postalloc_expand) { |
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2363 NOT_PRODUCT(TracePhase t2c("postalloc_expand", &_t_postalloc_expand, true)); |
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2364 cfg.postalloc_expand(_regalloc); |
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2365 } |
044b28168e20
8003854: PPC64 (part 115): Introduce PostallocExpand that expands nodes after register allocation
goetz
parents:
14422
diff
changeset
|
2366 |
0 | 2367 // Convert Nodes to instruction bits in a buffer |
2368 { | |
2369 // %%%% workspace merge brought two timers together for one job | |
2370 TracePhase t2a("output", &_t_output, true); | |
2371 NOT_PRODUCT( TraceTime t2b(NULL, &_t_codeGeneration, TimeCompiler, false); ) | |
2372 Output(); | |
2373 } | |
2374 | |
10405 | 2375 print_method(PHASE_FINAL_CODE); |
0 | 2376 |
2377 // He's dead, Jim. | |
2378 _cfg = (PhaseCFG*)0xdeadbeef; | |
2379 _regalloc = (PhaseChaitin*)0xdeadbeef; | |
2380 } | |
2381 | |
2382 | |
2383 //------------------------------dump_asm--------------------------------------- | |
2384 // Dump formatted assembly | |
2385 #ifndef PRODUCT | |
2386 void Compile::dump_asm(int *pcs, uint pc_limit) { | |
2387 bool cut_short = false; | |
2388 tty->print_cr("#"); | |
2389 tty->print("# "); _tf->dump(); tty->cr(); | |
2390 tty->print_cr("#"); | |
2391 | |
2392 // For all blocks | |
2393 int pc = 0x0; // Program counter | |
2394 char starts_bundle = ' '; | |
2395 _regalloc->dump_frame(); | |
2396 | |
2397 Node *n = NULL; | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2398 for (uint i = 0; i < _cfg->number_of_blocks(); i++) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2399 if (VMThread::should_terminate()) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2400 cut_short = true; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2401 break; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2402 } |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2403 Block* block = _cfg->get_block(i); |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2404 if (block->is_connector() && !Verbose) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2405 continue; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2406 } |
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2407 n = block->head(); |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2408 if (pcs && n->_idx < pc_limit) { |
0 | 2409 tty->print("%3.3x ", pcs[n->_idx]); |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2410 } else { |
0 | 2411 tty->print(" "); |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2412 } |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2413 block->dump_head(_cfg); |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2414 if (block->is_connector()) { |
0 | 2415 tty->print_cr(" # Empty connector block"); |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2416 } else if (block->num_preds() == 2 && block->pred(1)->is_CatchProj() && block->pred(1)->as_CatchProj()->_con == CatchProjNode::fall_through_index) { |
0 | 2417 tty->print_cr(" # Block is sole successor of call"); |
2418 } | |
2419 | |
2420 // For all instructions | |
2421 Node *delay = NULL; | |
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2422 for (uint j = 0; j < block->number_of_nodes(); j++) { |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2423 if (VMThread::should_terminate()) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2424 cut_short = true; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2425 break; |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2426 } |
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2427 n = block->get_node(j); |
0 | 2428 if (valid_bundle_info(n)) { |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2429 Bundle* bundle = node_bundling(n); |
0 | 2430 if (bundle->used_in_unconditional_delay()) { |
2431 delay = n; | |
2432 continue; | |
2433 } | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2434 if (bundle->starts_bundle()) { |
0 | 2435 starts_bundle = '+'; |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2436 } |
0 | 2437 } |
2438 | |
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2439 if (WizardMode) { |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2440 n->dump(); |
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2441 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2442 |
0 | 2443 if( !n->is_Region() && // Dont print in the Assembly |
2444 !n->is_Phi() && // a few noisely useless nodes | |
2445 !n->is_Proj() && | |
2446 !n->is_MachTemp() && | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1080
diff
changeset
|
2447 !n->is_SafePointScalarObject() && |
0 | 2448 !n->is_Catch() && // Would be nice to print exception table targets |
2449 !n->is_MergeMem() && // Not very interesting | |
2450 !n->is_top() && // Debug info table constants | |
2451 !(n->is_Con() && !n->is_Mach())// Debug info table constants | |
2452 ) { | |
2453 if (pcs && n->_idx < pc_limit) | |
2454 tty->print("%3.3x", pcs[n->_idx]); | |
2455 else | |
2456 tty->print(" "); | |
2457 tty->print(" %c ", starts_bundle); | |
2458 starts_bundle = ' '; | |
2459 tty->print("\t"); | |
2460 n->format(_regalloc, tty); | |
2461 tty->cr(); | |
2462 } | |
2463 | |
2464 // If we have an instruction with a delay slot, and have seen a delay, | |
2465 // then back up and print it | |
2466 if (valid_bundle_info(n) && node_bundling(n)->use_unconditional_delay()) { | |
2467 assert(delay != NULL, "no unconditional delay instruction"); | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2468 if (WizardMode) delay->dump(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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100
diff
changeset
|
2469 |
0 | 2470 if (node_bundling(delay)->starts_bundle()) |
2471 starts_bundle = '+'; | |
2472 if (pcs && n->_idx < pc_limit) | |
2473 tty->print("%3.3x", pcs[n->_idx]); | |
2474 else | |
2475 tty->print(" "); | |
2476 tty->print(" %c ", starts_bundle); | |
2477 starts_bundle = ' '; | |
2478 tty->print("\t"); | |
2479 delay->format(_regalloc, tty); | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
2480 tty->cr(); |
0 | 2481 delay = NULL; |
2482 } | |
2483 | |
2484 // Dump the exception table as well | |
2485 if( n->is_Catch() && (Verbose || WizardMode) ) { | |
2486 // Print the exception table for this offset | |
2487 _handler_table.print_subtable_for(pc); | |
2488 } | |
2489 } | |
2490 | |
2491 if (pcs && n->_idx < pc_limit) | |
2492 tty->print_cr("%3.3x", pcs[n->_idx]); | |
2493 else | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
2494 tty->cr(); |
0 | 2495 |
2496 assert(cut_short || delay == NULL, "no unconditional delay branch"); | |
2497 | |
2498 } // End of per-block dump | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
2499 tty->cr(); |
0 | 2500 |
2501 if (cut_short) tty->print_cr("*** disassembly is cut short ***"); | |
2502 } | |
2503 #endif | |
2504 | |
2505 //------------------------------Final_Reshape_Counts--------------------------- | |
2506 // This class defines counters to help identify when a method | |
2507 // may/must be executed using hardware with only 24-bit precision. | |
2508 struct Final_Reshape_Counts : public StackObj { | |
2509 int _call_count; // count non-inlined 'common' calls | |
2510 int _float_count; // count float ops requiring 24-bit precision | |
2511 int _double_count; // count double ops requiring more precision | |
2512 int _java_call_count; // count non-inlined 'java' calls | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2513 int _inner_loop_count; // count loops which need alignment |
0 | 2514 VectorSet _visited; // Visitation flags |
2515 Node_List _tests; // Set of IfNodes & PCTableNodes | |
2516 | |
2517 Final_Reshape_Counts() : | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2518 _call_count(0), _float_count(0), _double_count(0), |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
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|
2519 _java_call_count(0), _inner_loop_count(0), |
0 | 2520 _visited( Thread::current()->resource_area() ) { } |
2521 | |
2522 void inc_call_count () { _call_count ++; } | |
2523 void inc_float_count () { _float_count ++; } | |
2524 void inc_double_count() { _double_count++; } | |
2525 void inc_java_call_count() { _java_call_count++; } | |
859
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|
2526 void inc_inner_loop_count() { _inner_loop_count++; } |
0 | 2527 |
2528 int get_call_count () const { return _call_count ; } | |
2529 int get_float_count () const { return _float_count ; } | |
2530 int get_double_count() const { return _double_count; } | |
2531 int get_java_call_count() const { return _java_call_count; } | |
859
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|
2532 int get_inner_loop_count() const { return _inner_loop_count; } |
0 | 2533 }; |
2534 | |
9060
cc32ccaaf47f
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diff
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|
2535 #ifdef ASSERT |
0 | 2536 static bool oop_offset_is_sane(const TypeInstPtr* tp) { |
2537 ciInstanceKlass *k = tp->klass()->as_instance_klass(); | |
2538 // Make sure the offset goes inside the instance layout. | |
113
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2539 return k->contains_field_offset(tp->offset()); |
0 | 2540 // Note that OffsetBot and OffsetTop are very negative. |
2541 } | |
9060
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|
2542 #endif |
0 | 2543 |
3248
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|
2544 // Eliminate trivially redundant StoreCMs and accumulate their |
e6beb62de02d
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diff
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|
2545 // precedence edges. |
7196
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|
2546 void Compile::eliminate_redundant_card_marks(Node* n) { |
3248
e6beb62de02d
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|
2547 assert(n->Opcode() == Op_StoreCM, "expected StoreCM"); |
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diff
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|
2548 if (n->in(MemNode::Address)->outcnt() > 1) { |
e6beb62de02d
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diff
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|
2549 // There are multiple users of the same address so it might be |
e6beb62de02d
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diff
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|
2550 // possible to eliminate some of the StoreCMs |
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diff
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|
2551 Node* mem = n->in(MemNode::Memory); |
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|
2552 Node* adr = n->in(MemNode::Address); |
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|
2553 Node* val = n->in(MemNode::ValueIn); |
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diff
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|
2554 Node* prev = n; |
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diff
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|
2555 bool done = false; |
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|
2556 // Walk the chain of StoreCMs eliminating ones that match. As |
e6beb62de02d
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|
2557 // long as it's a chain of single users then the optimization is |
e6beb62de02d
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parents:
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|
2558 // safe. Eliminating partially redundant StoreCMs would require |
e6beb62de02d
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|
2559 // cloning copies down the other paths. |
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|
2560 while (mem->Opcode() == Op_StoreCM && mem->outcnt() == 1 && !done) { |
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|
2561 if (adr == mem->in(MemNode::Address) && |
e6beb62de02d
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|
2562 val == mem->in(MemNode::ValueIn)) { |
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|
2563 // redundant StoreCM |
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diff
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|
2564 if (mem->req() > MemNode::OopStore) { |
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|
2565 // Hasn't been processed by this code yet. |
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|
2566 n->add_prec(mem->in(MemNode::OopStore)); |
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|
2567 } else { |
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|
2568 // Already converted to precedence edge |
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diff
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|
2569 for (uint i = mem->req(); i < mem->len(); i++) { |
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diff
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|
2570 // Accumulate any precedence edges |
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diff
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|
2571 if (mem->in(i) != NULL) { |
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changeset
|
2572 n->add_prec(mem->in(i)); |
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|
2573 } |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
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changeset
|
2574 } |
e6beb62de02d
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diff
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|
2575 // Everything above this point has been processed. |
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diff
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|
2576 done = true; |
e6beb62de02d
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diff
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|
2577 } |
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diff
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|
2578 // Eliminate the previous StoreCM |
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diff
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|
2579 prev->set_req(MemNode::Memory, mem->in(MemNode::Memory)); |
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diff
changeset
|
2580 assert(mem->outcnt() == 0, "should be dead"); |
7196
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7092905: C2: Keep track of the number of dead nodes
bharadwaj
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diff
changeset
|
2581 mem->disconnect_inputs(NULL, this); |
3248
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diff
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|
2582 } else { |
e6beb62de02d
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diff
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|
2583 prev = mem; |
e6beb62de02d
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diff
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|
2584 } |
e6beb62de02d
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diff
changeset
|
2585 mem = prev->in(MemNode::Memory); |
e6beb62de02d
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diff
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|
2586 } |
e6beb62de02d
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parents:
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diff
changeset
|
2587 } |
e6beb62de02d
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parents:
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diff
changeset
|
2588 } |
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diff
changeset
|
2589 |
0 | 2590 //------------------------------final_graph_reshaping_impl---------------------- |
2591 // Implement items 1-5 from final_graph_reshaping below. | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
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6888
diff
changeset
|
2592 void Compile::final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc) { |
0 | 2593 |
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
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|
2594 if ( n->outcnt() == 0 ) return; // dead node |
0 | 2595 uint nop = n->Opcode(); |
2596 | |
2597 // Check for 2-input instruction with "last use" on right input. | |
2598 // Swap to left input. Implements item (2). | |
2599 if( n->req() == 3 && // two-input instruction | |
2600 n->in(1)->outcnt() > 1 && // left use is NOT a last use | |
2601 (!n->in(1)->is_Phi() || n->in(1)->in(2) != n) && // it is not data loop | |
2602 n->in(2)->outcnt() == 1 &&// right use IS a last use | |
2603 !n->in(2)->is_Con() ) { // right use is not a constant | |
2604 // Check for commutative opcode | |
2605 switch( nop ) { | |
2606 case Op_AddI: case Op_AddF: case Op_AddD: case Op_AddL: | |
2607 case Op_MaxI: case Op_MinI: | |
2608 case Op_MulI: case Op_MulF: case Op_MulD: case Op_MulL: | |
2609 case Op_AndL: case Op_XorL: case Op_OrL: | |
2610 case Op_AndI: case Op_XorI: case Op_OrI: { | |
2611 // Move "last use" input to left by swapping inputs | |
2612 n->swap_edges(1, 2); | |
2613 break; | |
2614 } | |
2615 default: | |
2616 break; | |
2617 } | |
2618 } | |
2619 | |
1609 | 2620 #ifdef ASSERT |
2621 if( n->is_Mem() ) { | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2622 int alias_idx = get_alias_index(n->as_Mem()->adr_type()); |
1609 | 2623 assert( n->in(0) != NULL || alias_idx != Compile::AliasIdxRaw || |
2624 // oop will be recorded in oop map if load crosses safepoint | |
2625 n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || | |
2626 LoadNode::is_immutable_value(n->in(MemNode::Address))), | |
2627 "raw memory operations should have control edge"); | |
2628 } | |
2629 #endif | |
0 | 2630 // Count FPU ops and common calls, implements item (3) |
2631 switch( nop ) { | |
2632 // Count all float operations that may use FPU | |
2633 case Op_AddF: | |
2634 case Op_SubF: | |
2635 case Op_MulF: | |
2636 case Op_DivF: | |
2637 case Op_NegF: | |
2638 case Op_ModF: | |
2639 case Op_ConvI2F: | |
2640 case Op_ConF: | |
2641 case Op_CmpF: | |
2642 case Op_CmpF3: | |
2643 // case Op_ConvL2F: // longs are split into 32-bit halves | |
859
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6860599: nodes limit could be reached during Output phase
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parents:
856
diff
changeset
|
2644 frc.inc_float_count(); |
0 | 2645 break; |
2646 | |
2647 case Op_ConvF2D: | |
2648 case Op_ConvD2F: | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
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diff
changeset
|
2649 frc.inc_float_count(); |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2650 frc.inc_double_count(); |
0 | 2651 break; |
2652 | |
2653 // Count all double operations that may use FPU | |
2654 case Op_AddD: | |
2655 case Op_SubD: | |
2656 case Op_MulD: | |
2657 case Op_DivD: | |
2658 case Op_NegD: | |
2659 case Op_ModD: | |
2660 case Op_ConvI2D: | |
2661 case Op_ConvD2I: | |
2662 // case Op_ConvL2D: // handled by leaf call | |
2663 // case Op_ConvD2L: // handled by leaf call | |
2664 case Op_ConD: | |
2665 case Op_CmpD: | |
2666 case Op_CmpD3: | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
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856
diff
changeset
|
2667 frc.inc_double_count(); |
0 | 2668 break; |
2669 case Op_Opaque1: // Remove Opaque Nodes before matching | |
2670 case Op_Opaque2: // Remove Opaque Nodes before matching | |
17780 | 2671 case Op_Opaque3: |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
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6888
diff
changeset
|
2672 n->subsume_by(n->in(1), this); |
0 | 2673 break; |
2674 case Op_CallStaticJava: | |
2675 case Op_CallJava: | |
2676 case Op_CallDynamicJava: | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
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parents:
856
diff
changeset
|
2677 frc.inc_java_call_count(); // Count java call site; |
0 | 2678 case Op_CallRuntime: |
2679 case Op_CallLeaf: | |
2680 case Op_CallLeafNoFP: { | |
2681 assert( n->is_Call(), "" ); | |
2682 CallNode *call = n->as_Call(); | |
2683 // Count call sites where the FP mode bit would have to be flipped. | |
2684 // Do not count uncommon runtime calls: | |
2685 // uncommon_trap, _complete_monitor_locking, _complete_monitor_unlocking, | |
2686 // _new_Java, _new_typeArray, _new_objArray, _rethrow_Java, ... | |
2687 if( !call->is_CallStaticJava() || !call->as_CallStaticJava()->_name ) { | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
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diff
changeset
|
2688 frc.inc_call_count(); // Count the call site |
0 | 2689 } else { // See if uncommon argument is shared |
2690 Node *n = call->in(TypeFunc::Parms); | |
2691 int nop = n->Opcode(); | |
2692 // Clone shared simple arguments to uncommon calls, item (1). | |
2693 if( n->outcnt() > 1 && | |
2694 !n->is_Proj() && | |
2695 nop != Op_CreateEx && | |
2696 nop != Op_CheckCastPP && | |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
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293
diff
changeset
|
2697 nop != Op_DecodeN && |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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6843
diff
changeset
|
2698 nop != Op_DecodeNKlass && |
0 | 2699 !n->is_Mem() ) { |
2700 Node *x = n->clone(); | |
2701 call->set_req( TypeFunc::Parms, x ); | |
2702 } | |
2703 } | |
2704 break; | |
2705 } | |
2706 | |
2707 case Op_StoreD: | |
2708 case Op_LoadD: | |
2709 case Op_LoadD_unaligned: | |
859
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6860599: nodes limit could be reached during Output phase
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diff
changeset
|
2710 frc.inc_double_count(); |
0 | 2711 goto handle_mem; |
2712 case Op_StoreF: | |
2713 case Op_LoadF: | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2714 frc.inc_float_count(); |
0 | 2715 goto handle_mem; |
2716 | |
3248
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2717 case Op_StoreCM: |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2718 { |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2719 // Convert OopStore dependence into precedence edge |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2720 Node* prec = n->in(MemNode::OopStore); |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2721 n->del_req(MemNode::OopStore); |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2722 n->add_prec(prec); |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2723 eliminate_redundant_card_marks(n); |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2724 } |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2725 |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2726 // fall through |
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
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diff
changeset
|
2727 |
0 | 2728 case Op_StoreB: |
2729 case Op_StoreC: | |
2730 case Op_StorePConditional: | |
2731 case Op_StoreI: | |
2732 case Op_StoreL: | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
418
diff
changeset
|
2733 case Op_StoreIConditional: |
0 | 2734 case Op_StoreLConditional: |
2735 case Op_CompareAndSwapI: | |
2736 case Op_CompareAndSwapL: | |
2737 case Op_CompareAndSwapP: | |
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2738 case Op_CompareAndSwapN: |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2739 case Op_GetAndAddI: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2740 case Op_GetAndAddL: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2741 case Op_GetAndSetI: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2742 case Op_GetAndSetL: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2743 case Op_GetAndSetP: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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parents:
6792
diff
changeset
|
2744 case Op_GetAndSetN: |
0 | 2745 case Op_StoreP: |
113
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diff
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|
2746 case Op_StoreN: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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6843
diff
changeset
|
2747 case Op_StoreNKlass: |
0 | 2748 case Op_LoadB: |
624 | 2749 case Op_LoadUB: |
558
3b5ac9e7e6ea
6796746: rename LoadC (char) opcode class to LoadUS (unsigned short)
twisti
parents:
492
diff
changeset
|
2750 case Op_LoadUS: |
0 | 2751 case Op_LoadI: |
2752 case Op_LoadKlass: | |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
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163
diff
changeset
|
2753 case Op_LoadNKlass: |
0 | 2754 case Op_LoadL: |
2755 case Op_LoadL_unaligned: | |
2756 case Op_LoadPLocked: | |
2757 case Op_LoadP: | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
changeset
|
2758 case Op_LoadN: |
0 | 2759 case Op_LoadRange: |
2760 case Op_LoadS: { | |
2761 handle_mem: | |
2762 #ifdef ASSERT | |
2763 if( VerifyOptoOopOffsets ) { | |
2764 assert( n->is_Mem(), "" ); | |
2765 MemNode *mem = (MemNode*)n; | |
2766 // Check to see if address types have grounded out somehow. | |
2767 const TypeInstPtr *tp = mem->in(MemNode::Address)->bottom_type()->isa_instptr(); | |
2768 assert( !tp || oop_offset_is_sane(tp), "" ); | |
2769 } | |
2770 #endif | |
2771 break; | |
2772 } | |
2773 | |
2774 case Op_AddP: { // Assert sane base pointers | |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2775 Node *addp = n->in(AddPNode::Address); |
0 | 2776 assert( !addp->is_AddP() || |
2777 addp->in(AddPNode::Base)->is_top() || // Top OK for allocation | |
2778 addp->in(AddPNode::Base) == n->in(AddPNode::Base), | |
2779 "Base pointers must match" ); | |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2780 #ifdef _LP64 |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12167
diff
changeset
|
2781 if ((UseCompressedOops || UseCompressedClassPointers) && |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2782 addp->Opcode() == Op_ConP && |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2783 addp == n->in(AddPNode::Base) && |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2784 n->in(AddPNode::Offset)->is_Con()) { |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2785 // Use addressing with narrow klass to load with offset on x86. |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2786 // On sparc loading 32-bits constant and decoding it have less |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2787 // instructions (4) then load 64-bits constant (7). |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2788 // Do this transformation here since IGVN will convert ConN back to ConP. |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2789 const Type* t = addp->bottom_type(); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2790 if (t->isa_oopptr() || t->isa_klassptr()) { |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2791 Node* nn = NULL; |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2792 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2793 int op = t->isa_oopptr() ? Op_ConN : Op_ConNKlass; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2794 |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2795 // Look for existing ConN node of the same exact type. |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2796 Node* r = root(); |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2797 uint cnt = r->outcnt(); |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2798 for (uint i = 0; i < cnt; i++) { |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2799 Node* m = r->raw_out(i); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2800 if (m!= NULL && m->Opcode() == op && |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
182
diff
changeset
|
2801 m->bottom_type()->make_ptr() == t) { |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2802 nn = m; |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2803 break; |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2804 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2805 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2806 if (nn != NULL) { |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2807 // Decode a narrow oop to match address |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2808 // [R12 + narrow_oop_reg<<3 + offset] |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2809 if (t->isa_oopptr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2810 nn = new (this) DecodeNNode(nn, t); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2811 } else { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2812 nn = new (this) DecodeNKlassNode(nn, t); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2813 } |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2814 n->set_req(AddPNode::Base, nn); |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2815 n->set_req(AddPNode::Address, nn); |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2816 if (addp->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2817 addp->disconnect_inputs(NULL, this); |
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2818 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2819 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2820 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2821 } |
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2822 #endif |
0 | 2823 break; |
2824 } | |
2825 | |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2826 #ifdef _LP64 |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2827 case Op_CastPP: |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2828 if (n->in(1)->is_DecodeN() && Matcher::gen_narrow_oop_implicit_null_checks()) { |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2829 Node* in1 = n->in(1); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2830 const Type* t = n->bottom_type(); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2831 Node* new_in1 = in1->clone(); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2832 new_in1->as_DecodeN()->set_type(t); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2833 |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2834 if (!Matcher::narrow_oop_use_complex_address()) { |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2835 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2836 // x86, ARM and friends can handle 2 adds in addressing mode |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2837 // and Matcher can fold a DecodeN node into address by using |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2838 // a narrow oop directly and do implicit NULL check in address: |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2839 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2840 // [R12 + narrow_oop_reg<<3 + offset] |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2841 // NullCheck narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2842 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2843 // On other platforms (Sparc) we have to keep new DecodeN node and |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2844 // use it to do implicit NULL check in address: |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2845 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2846 // decode_not_null narrow_oop_reg, base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2847 // [base_reg + offset] |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2848 // NullCheck base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2849 // |
605 | 2850 // Pin the new DecodeN node to non-null path on these platform (Sparc) |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2851 // to keep the information to which NULL check the new DecodeN node |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2852 // corresponds to use it as value in implicit_null_check(). |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2853 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2854 new_in1->set_req(0, n->in(0)); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2855 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2856 |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2857 n->subsume_by(new_in1, this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2858 if (in1->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2859 in1->disconnect_inputs(NULL, this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2860 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2861 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2862 break; |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2863 |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2864 case Op_CmpP: |
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2865 // Do this transformation here to preserve CmpPNode::sub() and |
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2866 // other TypePtr related Ideal optimizations (for example, ptr nullness). |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2867 if (n->in(1)->is_DecodeNarrowPtr() || n->in(2)->is_DecodeNarrowPtr()) { |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2868 Node* in1 = n->in(1); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2869 Node* in2 = n->in(2); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2870 if (!in1->is_DecodeNarrowPtr()) { |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2871 in2 = in1; |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2872 in1 = n->in(2); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2873 } |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2874 assert(in1->is_DecodeNarrowPtr(), "sanity"); |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2875 |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2876 Node* new_in2 = NULL; |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2877 if (in2->is_DecodeNarrowPtr()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2878 assert(in2->Opcode() == in1->Opcode(), "must be same node type"); |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2879 new_in2 = in2->in(1); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2880 } else if (in2->Opcode() == Op_ConP) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2881 const Type* t = in2->bottom_type(); |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2882 if (t == TypePtr::NULL_PTR) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2883 assert(in1->is_DecodeN(), "compare klass to null?"); |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2884 // Don't convert CmpP null check into CmpN if compressed |
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2885 // oops implicit null check is not generated. |
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2886 // This will allow to generate normal oop implicit null check. |
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2887 if (Matcher::gen_narrow_oop_implicit_null_checks()) |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2888 new_in2 = ConNode::make(this, TypeNarrowOop::NULL_PTR); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2889 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2890 // This transformation together with CastPP transformation above |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2891 // will generated code for implicit NULL checks for compressed oops. |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2892 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2893 // The original code after Optimize() |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2894 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2895 // LoadN memory, narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2896 // decode narrow_oop_reg, base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2897 // CmpP base_reg, NULL |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2898 // CastPP base_reg // NotNull |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2899 // Load [base_reg + offset], val_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2900 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2901 // after these transformations will be |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2902 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2903 // LoadN memory, narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2904 // CmpN narrow_oop_reg, NULL |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2905 // decode_not_null narrow_oop_reg, base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2906 // Load [base_reg + offset], val_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2907 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2908 // and the uncommon path (== NULL) will use narrow_oop_reg directly |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2909 // since narrow oops can be used in debug info now (see the code in |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2910 // final_graph_reshaping_walk()). |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2911 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2912 // At the end the code will be matched to |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2913 // on x86: |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2914 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2915 // Load_narrow_oop memory, narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2916 // Load [R12 + narrow_oop_reg<<3 + offset], val_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2917 // NullCheck narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2918 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2919 // and on sparc: |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2920 // |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2921 // Load_narrow_oop memory, narrow_oop_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2922 // decode_not_null narrow_oop_reg, base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2923 // Load [base_reg + offset], val_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2924 // NullCheck base_reg |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2925 // |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2926 } else if (t->isa_oopptr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2927 new_in2 = ConNode::make(this, t->make_narrowoop()); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2928 } else if (t->isa_klassptr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2929 new_in2 = ConNode::make(this, t->make_narrowklass()); |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2930 } |
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2931 } |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2932 if (new_in2 != NULL) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2933 Node* cmpN = new (this) CmpNNode(in1->in(1), new_in2); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2934 n->subsume_by(cmpN, this); |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2935 if (in1->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2936 in1->disconnect_inputs(NULL, this); |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2937 } |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2938 if (in2->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2939 in2->disconnect_inputs(NULL, this); |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2940 } |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2941 } |
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2942 } |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
253
diff
changeset
|
2943 break; |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2944 |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2945 case Op_DecodeN: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2946 case Op_DecodeNKlass: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2947 assert(!n->in(1)->is_EncodeNarrowPtr(), "should be optimized out"); |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2948 // DecodeN could be pinned when it can't be fold into |
492
5496e074077f
6787050: assert(n->in(0) == 0L,"no control") with UseCompressedOops on sparcv9
kvn
parents:
490
diff
changeset
|
2949 // an address expression, see the code for Op_CastPP above. |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2950 assert(n->in(0) == NULL || (UseCompressedOops && !Matcher::narrow_oop_use_complex_address()), "no control"); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2951 break; |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2952 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2953 case Op_EncodeP: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2954 case Op_EncodePKlass: { |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2955 Node* in1 = n->in(1); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2956 if (in1->is_DecodeNarrowPtr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2957 n->subsume_by(in1->in(1), this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2958 } else if (in1->Opcode() == Op_ConP) { |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2959 const Type* t = in1->bottom_type(); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2960 if (t == TypePtr::NULL_PTR) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2961 assert(t->isa_oopptr(), "null klass?"); |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2962 n->subsume_by(ConNode::make(this, TypeNarrowOop::NULL_PTR), this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2963 } else if (t->isa_oopptr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2964 n->subsume_by(ConNode::make(this, t->make_narrowoop()), this); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2965 } else if (t->isa_klassptr()) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2966 n->subsume_by(ConNode::make(this, t->make_narrowklass()), this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2967 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2968 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2969 if (in1->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2970 in1->disconnect_inputs(NULL, this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2971 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2972 break; |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2973 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2974 |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2975 case Op_Proj: { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2976 if (OptimizeStringConcat) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2977 ProjNode* p = n->as_Proj(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2978 if (p->_is_io_use) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2979 // Separate projections were used for the exception path which |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2980 // are normally removed by a late inline. If it wasn't inlined |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2981 // then they will hang around and should just be replaced with |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2982 // the original one. |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2983 Node* proj = NULL; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2984 // Replace with just one |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2985 for (SimpleDUIterator i(p->in(0)); i.has_next(); i.next()) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2986 Node *use = i.get(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2987 if (use->is_Proj() && p != use && use->as_Proj()->_con == p->_con) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2988 proj = use; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2989 break; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2990 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2991 } |
4767 | 2992 assert(proj != NULL, "must be found"); |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2993 p->subsume_by(proj, this); |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2994 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2995 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2996 break; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2997 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2998 |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2999 case Op_Phi: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3000 if (n->as_Phi()->bottom_type()->isa_narrowoop() || n->as_Phi()->bottom_type()->isa_narrowklass()) { |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3001 // The EncodeP optimization may create Phi with the same edges |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3002 // for all paths. It is not handled well by Register Allocator. |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3003 Node* unique_in = n->in(1); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3004 assert(unique_in != NULL, ""); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3005 uint cnt = n->req(); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3006 for (uint i = 2; i < cnt; i++) { |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3007 Node* m = n->in(i); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3008 assert(m != NULL, ""); |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3009 if (unique_in != m) |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3010 unique_in = NULL; |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3011 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3012 if (unique_in != NULL) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3013 n->subsume_by(unique_in, this); |
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3014 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3015 } |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3016 break; |
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
3017 |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
3018 #endif |
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
3019 |
23799
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3020 #ifdef ASSERT |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3021 case Op_CastII: |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3022 // Verify that all range check dependent CastII nodes were removed. |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3023 if (n->isa_CastII()->has_range_check()) { |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3024 n->dump(3); |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3025 assert(false, "Range check dependent CastII node was not removed"); |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3026 } |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3027 break; |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3028 #endif |
535618ab1c04
6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
thartmann
parents:
23471
diff
changeset
|
3029 |
0 | 3030 case Op_ModI: |
3031 if (UseDivMod) { | |
3032 // Check if a%b and a/b both exist | |
3033 Node* d = n->find_similar(Op_DivI); | |
3034 if (d) { | |
3035 // Replace them with a fused divmod if supported | |
3036 if (Matcher::has_match_rule(Op_DivModI)) { | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3037 DivModINode* divmod = DivModINode::make(this, n); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3038 d->subsume_by(divmod->div_proj(), this); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3039 n->subsume_by(divmod->mod_proj(), this); |
0 | 3040 } else { |
3041 // replace a%b with a-((a/b)*b) | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3042 Node* mult = new (this) MulINode(d, d->in(2)); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3043 Node* sub = new (this) SubINode(d->in(1), mult); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3044 n->subsume_by(sub, this); |
0 | 3045 } |
3046 } | |
3047 } | |
3048 break; | |
3049 | |
3050 case Op_ModL: | |
3051 if (UseDivMod) { | |
3052 // Check if a%b and a/b both exist | |
3053 Node* d = n->find_similar(Op_DivL); | |
3054 if (d) { | |
3055 // Replace them with a fused divmod if supported | |
3056 if (Matcher::has_match_rule(Op_DivModL)) { | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3057 DivModLNode* divmod = DivModLNode::make(this, n); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3058 d->subsume_by(divmod->div_proj(), this); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3059 n->subsume_by(divmod->mod_proj(), this); |
0 | 3060 } else { |
3061 // replace a%b with a-((a/b)*b) | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3062 Node* mult = new (this) MulLNode(d, d->in(2)); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3063 Node* sub = new (this) SubLNode(d->in(1), mult); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3064 n->subsume_by(sub, this); |
0 | 3065 } |
3066 } | |
3067 } | |
3068 break; | |
3069 | |
6179
8c92982cbbc4
7119644: Increase superword's vector size up to 256 bits
kvn
parents:
6143
diff
changeset
|
3070 case Op_LoadVector: |
8c92982cbbc4
7119644: Increase superword's vector size up to 256 bits
kvn
parents:
6143
diff
changeset
|
3071 case Op_StoreVector: |
0 | 3072 break; |
3073 | |
3074 case Op_PackB: | |
3075 case Op_PackS: | |
3076 case Op_PackI: | |
3077 case Op_PackF: | |
3078 case Op_PackL: | |
3079 case Op_PackD: | |
3080 if (n->req()-1 > 2) { | |
3081 // Replace many operand PackNodes with a binary tree for matching | |
3082 PackNode* p = (PackNode*) n; | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3083 Node* btp = p->binary_tree_pack(this, 1, n->req()); |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3084 n->subsume_by(btp, this); |
0 | 3085 } |
3086 break; | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3087 case Op_Loop: |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3088 case Op_CountedLoop: |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3089 if (n->as_Loop()->is_inner_loop()) { |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3090 frc.inc_inner_loop_count(); |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3091 } |
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3092 break; |
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3093 case Op_LShiftI: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3094 case Op_RShiftI: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3095 case Op_URShiftI: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3096 case Op_LShiftL: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3097 case Op_RShiftL: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3098 case Op_URShiftL: |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3099 if (Matcher::need_masked_shift_count) { |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3100 // The cpu's shift instructions don't restrict the count to the |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3101 // lower 5/6 bits. We need to do the masking ourselves. |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3102 Node* in2 = n->in(2); |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3103 juint mask = (n->bottom_type() == TypeInt::INT) ? (BitsPerInt - 1) : (BitsPerLong - 1); |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3104 const TypeInt* t = in2->find_int_type(); |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3105 if (t != NULL && t->is_con()) { |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3106 juint shift = t->get_con(); |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3107 if (shift > mask) { // Unsigned cmp |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3108 n->set_req(2, ConNode::make(this, TypeInt::make(shift & mask))); |
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3109 } |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3110 } else { |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3111 if (t == NULL || t->_lo < 0 || t->_hi > (int)mask) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3112 Node* shift = new (this) AndINode(in2, ConNode::make(this, TypeInt::make(mask))); |
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3113 n->set_req(2, shift); |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3114 } |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3115 } |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3116 if (in2->outcnt() == 0) { // Remove dead node |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3117 in2->disconnect_inputs(NULL, this); |
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3118 } |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3119 } |
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
3120 break; |
8694
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3121 case Op_MemBarStoreStore: |
10278 | 3122 case Op_MemBarRelease: |
8694
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3123 // Break the link with AllocateNode: it is no longer useful and |
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3124 // confuses register allocation. |
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3125 if (n->req() > MemBarNode::Precedent) { |
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3126 n->set_req(MemBarNode::Precedent, top()); |
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3127 } |
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
3128 break; |
0 | 3129 default: |
3130 assert( !n->is_Call(), "" ); | |
3131 assert( !n->is_Mem(), "" ); | |
22985
eb8b5cc64669
8063137: Never-taken branches should be pruned when GWT LambdaForms are shared
vlivanov
parents:
22851
diff
changeset
|
3132 assert( nop != Op_ProfileBoolean, "should be eliminated during IGVN"); |
0 | 3133 break; |
3134 } | |
127 | 3135 |
3136 // Collect CFG split points | |
3137 if (n->is_MultiBranch()) | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3138 frc._tests.push(n); |
0 | 3139 } |
3140 | |
3141 //------------------------------final_graph_reshaping_walk--------------------- | |
3142 // Replacing Opaque nodes with their input in final_graph_reshaping_impl(), | |
3143 // requires that the walk visits a node's inputs before visiting the node. | |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3144 void Compile::final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ) { |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3145 ResourceArea *area = Thread::current()->resource_area(); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3146 Unique_Node_List sfpt(area); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3147 |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3148 frc._visited.set(root->_idx); // first, mark node as visited |
0 | 3149 uint cnt = root->req(); |
3150 Node *n = root; | |
3151 uint i = 0; | |
3152 while (true) { | |
3153 if (i < cnt) { | |
3154 // Place all non-visited non-null inputs onto stack | |
3155 Node* m = n->in(i); | |
3156 ++i; | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3157 if (m != NULL && !frc._visited.test_set(m->_idx)) { |
17980
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
3158 if (m->is_SafePoint() && m->as_SafePoint()->jvms() != NULL) { |
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
3159 // compute worst case interpreter size in case of a deoptimization |
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
3160 update_interpreter_frame_size(m->as_SafePoint()->jvms()->interpreter_frame_size()); |
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
3161 |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3162 sfpt.push(m); |
17980
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
3163 } |
0 | 3164 cnt = m->req(); |
3165 nstack.push(n, i); // put on stack parent and next input's index | |
3166 n = m; | |
3167 i = 0; | |
3168 } | |
3169 } else { | |
3170 // Now do post-visit work | |
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3171 final_graph_reshaping_impl( n, frc ); |
0 | 3172 if (nstack.is_empty()) |
3173 break; // finished | |
3174 n = nstack.node(); // Get node from stack | |
3175 cnt = n->req(); | |
3176 i = nstack.index(); | |
3177 nstack.pop(); // Shift to the next node on stack | |
3178 } | |
3179 } | |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3180 |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
3181 // Skip next transformation if compressed oops are not used. |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3182 if ((UseCompressedOops && !Matcher::gen_narrow_oop_implicit_null_checks()) || |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12167
diff
changeset
|
3183 (!UseCompressedOops && !UseCompressedClassPointers)) |
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
3184 return; |
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
3185 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3186 // Go over safepoints nodes to skip DecodeN/DecodeNKlass nodes for debug edges. |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3187 // It could be done for an uncommon traps or any safepoints/calls |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3188 // if the DecodeN/DecodeNKlass node is referenced only in a debug info. |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3189 while (sfpt.size() > 0) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3190 n = sfpt.pop(); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3191 JVMState *jvms = n->as_SafePoint()->jvms(); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3192 assert(jvms != NULL, "sanity"); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3193 int start = jvms->debug_start(); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3194 int end = n->req(); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3195 bool is_uncommon = (n->is_CallStaticJava() && |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3196 n->as_CallStaticJava()->uncommon_trap_request() != 0); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3197 for (int j = start; j < end; j++) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3198 Node* in = n->in(j); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3199 if (in->is_DecodeNarrowPtr()) { |
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3200 bool safe_to_skip = true; |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3201 if (!is_uncommon ) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3202 // Is it safe to skip? |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3203 for (uint i = 0; i < in->outcnt(); i++) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3204 Node* u = in->raw_out(i); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3205 if (!u->is_SafePoint() || |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3206 u->is_Call() && u->as_Call()->has_non_debug_use(n)) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3207 safe_to_skip = false; |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3208 } |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3209 } |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3210 } |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3211 if (safe_to_skip) { |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3212 n->set_req(j, in->in(1)); |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3213 } |
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
3214 if (in->outcnt() == 0) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3215 in->disconnect_inputs(NULL, this); |
331
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3216 } |
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3217 } |
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3218 } |
cecd8eb4e0ca
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293
diff
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|
3219 } |
0 | 3220 } |
3221 | |
3222 //------------------------------final_graph_reshaping-------------------------- | |
3223 // Final Graph Reshaping. | |
3224 // | |
3225 // (1) Clone simple inputs to uncommon calls, so they can be scheduled late | |
3226 // and not commoned up and forced early. Must come after regular | |
3227 // optimizations to avoid GVN undoing the cloning. Clone constant | |
3228 // inputs to Loop Phis; these will be split by the allocator anyways. | |
3229 // Remove Opaque nodes. | |
3230 // (2) Move last-uses by commutative operations to the left input to encourage | |
3231 // Intel update-in-place two-address operations and better register usage | |
3232 // on RISCs. Must come after regular optimizations to avoid GVN Ideal | |
3233 // calls canonicalizing them back. | |
3234 // (3) Count the number of double-precision FP ops, single-precision FP ops | |
3235 // and call sites. On Intel, we can get correct rounding either by | |
3236 // forcing singles to memory (requires extra stores and loads after each | |
3237 // FP bytecode) or we can set a rounding mode bit (requires setting and | |
3238 // clearing the mode bit around call sites). The mode bit is only used | |
3239 // if the relative frequency of single FP ops to calls is low enough. | |
3240 // This is a key transform for SPEC mpeg_audio. | |
3241 // (4) Detect infinite loops; blobs of code reachable from above but not | |
3242 // below. Several of the Code_Gen algorithms fail on such code shapes, | |
3243 // so we simply bail out. Happens a lot in ZKM.jar, but also happens | |
3244 // from time to time in other codes (such as -Xcomp finalizer loops, etc). | |
3245 // Detection is by looking for IfNodes where only 1 projection is | |
3246 // reachable from below or CatchNodes missing some targets. | |
3247 // (5) Assert for insane oop offsets in debug mode. | |
3248 | |
3249 bool Compile::final_graph_reshaping() { | |
3250 // an infinite loop may have been eliminated by the optimizer, | |
3251 // in which case the graph will be empty. | |
3252 if (root()->req() == 1) { | |
3253 record_method_not_compilable("trivial infinite loop"); | |
3254 return true; | |
3255 } | |
3256 | |
8048
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3257 // Expensive nodes have their control input set to prevent the GVN |
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3258 // from freely commoning them. There's no GVN beyond this point so |
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3259 // no need to keep the control input. We want the expensive nodes to |
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3260 // be freely moved to the least frequent code path by gcm. |
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3261 assert(OptimizeExpensiveOps || expensive_count() == 0, "optimization off but list non empty?"); |
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3262 for (int i = 0; i < expensive_count(); i++) { |
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3263 _expensive_nodes->at(i)->set_req(0, NULL); |
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3264 } |
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3265 |
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3266 Final_Reshape_Counts frc; |
0 | 3267 |
3268 // Visit everybody reachable! | |
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3269 // Allocate stack of size C->live_nodes()/2 to avoid frequent realloc |
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3270 Node_Stack nstack(live_nodes() >> 1); |
859
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3271 final_graph_reshaping_walk(nstack, root(), frc); |
0 | 3272 |
3273 // Check for unreachable (from below) code (i.e., infinite loops). | |
859
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3274 for( uint i = 0; i < frc._tests.size(); i++ ) { |
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3275 MultiBranchNode *n = frc._tests[i]->as_MultiBranch(); |
127 | 3276 // Get number of CFG targets. |
0 | 3277 // Note that PCTables include exception targets after calls. |
127 | 3278 uint required_outcnt = n->required_outcnt(); |
3279 if (n->outcnt() != required_outcnt) { | |
0 | 3280 // Check for a few special cases. Rethrow Nodes never take the |
3281 // 'fall-thru' path, so expected kids is 1 less. | |
3282 if (n->is_PCTable() && n->in(0) && n->in(0)->in(0)) { | |
3283 if (n->in(0)->in(0)->is_Call()) { | |
3284 CallNode *call = n->in(0)->in(0)->as_Call(); | |
3285 if (call->entry_point() == OptoRuntime::rethrow_stub()) { | |
127 | 3286 required_outcnt--; // Rethrow always has 1 less kid |
0 | 3287 } else if (call->req() > TypeFunc::Parms && |
3288 call->is_CallDynamicJava()) { | |
3289 // Check for null receiver. In such case, the optimizer has | |
3290 // detected that the virtual call will always result in a null | |
3291 // pointer exception. The fall-through projection of this CatchNode | |
3292 // will not be populated. | |
3293 Node *arg0 = call->in(TypeFunc::Parms); | |
3294 if (arg0->is_Type() && | |
3295 arg0->as_Type()->type()->higher_equal(TypePtr::NULL_PTR)) { | |
127 | 3296 required_outcnt--; |
0 | 3297 } |
3298 } else if (call->entry_point() == OptoRuntime::new_array_Java() && | |
3299 call->req() > TypeFunc::Parms+1 && | |
3300 call->is_CallStaticJava()) { | |
3301 // Check for negative array length. In such case, the optimizer has | |
3302 // detected that the allocation attempt will always result in an | |
3303 // exception. There is no fall-through projection of this CatchNode . | |
3304 Node *arg1 = call->in(TypeFunc::Parms+1); | |
3305 if (arg1->is_Type() && | |
3306 arg1->as_Type()->type()->join(TypeInt::POS)->empty()) { | |
127 | 3307 required_outcnt--; |
0 | 3308 } |
3309 } | |
3310 } | |
3311 } | |
127 | 3312 // Recheck with a better notion of 'required_outcnt' |
3313 if (n->outcnt() != required_outcnt) { | |
0 | 3314 record_method_not_compilable("malformed control flow"); |
3315 return true; // Not all targets reachable! | |
3316 } | |
3317 } | |
3318 // Check that I actually visited all kids. Unreached kids | |
3319 // must be infinite loops. | |
3320 for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) | |
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3321 if (!frc._visited.test(n->fast_out(j)->_idx)) { |
0 | 3322 record_method_not_compilable("infinite loop"); |
3323 return true; // Found unvisited kid; must be unreach | |
3324 } | |
3325 } | |
3326 | |
3327 // If original bytecodes contained a mixture of floats and doubles | |
3328 // check if the optimizer has made it homogenous, item (3). | |
929
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3329 if( Use24BitFPMode && Use24BitFP && UseSSE == 0 && |
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3330 frc.get_float_count() > 32 && |
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|
3331 frc.get_double_count() == 0 && |
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|
3332 (10 * frc.get_call_count() < frc.get_float_count()) ) { |
0 | 3333 set_24_bit_selection_and_mode( false, true ); |
3334 } | |
3335 | |
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3336 set_java_calls(frc.get_java_call_count()); |
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3337 set_inner_loops(frc.get_inner_loop_count()); |
0 | 3338 |
3339 // No infinite loops, no reason to bail out. | |
3340 return false; | |
3341 } | |
3342 | |
3343 //-----------------------------too_many_traps---------------------------------- | |
3344 // Report if there are too many traps at the current method and bci. | |
3345 // Return true if there was a trap, and/or PerMethodTrapLimit is exceeded. | |
3346 bool Compile::too_many_traps(ciMethod* method, | |
3347 int bci, | |
3348 Deoptimization::DeoptReason reason) { | |
3349 ciMethodData* md = method->method_data(); | |
3350 if (md->is_empty()) { | |
3351 // Assume the trap has not occurred, or that it occurred only | |
3352 // because of a transient condition during start-up in the interpreter. | |
3353 return false; | |
3354 } | |
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3355 ciMethod* m = Deoptimization::reason_is_speculate(reason) ? this->method() : NULL; |
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3356 if (md->has_trap_at(bci, m, reason) != 0) { |
0 | 3357 // Assume PerBytecodeTrapLimit==0, for a more conservative heuristic. |
3358 // Also, if there are multiple reasons, or if there is no per-BCI record, | |
3359 // assume the worst. | |
3360 if (log()) | |
3361 log()->elem("observe trap='%s' count='%d'", | |
3362 Deoptimization::trap_reason_name(reason), | |
3363 md->trap_count(reason)); | |
3364 return true; | |
3365 } else { | |
3366 // Ignore method/bci and see if there have been too many globally. | |
3367 return too_many_traps(reason, md); | |
3368 } | |
3369 } | |
3370 | |
3371 // Less-accurate variant which does not require a method and bci. | |
3372 bool Compile::too_many_traps(Deoptimization::DeoptReason reason, | |
3373 ciMethodData* logmd) { | |
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3374 if (trap_count(reason) >= Deoptimization::per_method_trap_limit(reason)) { |
0 | 3375 // Too many traps globally. |
3376 // Note that we use cumulative trap_count, not just md->trap_count. | |
3377 if (log()) { | |
3378 int mcount = (logmd == NULL)? -1: (int)logmd->trap_count(reason); | |
3379 log()->elem("observe trap='%s' count='0' mcount='%d' ccount='%d'", | |
3380 Deoptimization::trap_reason_name(reason), | |
3381 mcount, trap_count(reason)); | |
3382 } | |
3383 return true; | |
3384 } else { | |
3385 // The coast is clear. | |
3386 return false; | |
3387 } | |
3388 } | |
3389 | |
3390 //--------------------------too_many_recompiles-------------------------------- | |
3391 // Report if there are too many recompiles at the current method and bci. | |
3392 // Consults PerBytecodeRecompilationCutoff and PerMethodRecompilationCutoff. | |
3393 // Is not eager to return true, since this will cause the compiler to use | |
3394 // Action_none for a trap point, to avoid too many recompilations. | |
3395 bool Compile::too_many_recompiles(ciMethod* method, | |
3396 int bci, | |
3397 Deoptimization::DeoptReason reason) { | |
3398 ciMethodData* md = method->method_data(); | |
3399 if (md->is_empty()) { | |
3400 // Assume the trap has not occurred, or that it occurred only | |
3401 // because of a transient condition during start-up in the interpreter. | |
3402 return false; | |
3403 } | |
3404 // Pick a cutoff point well within PerBytecodeRecompilationCutoff. | |
3405 uint bc_cutoff = (uint) PerBytecodeRecompilationCutoff / 8; | |
3406 uint m_cutoff = (uint) PerMethodRecompilationCutoff / 2 + 1; // not zero | |
3407 Deoptimization::DeoptReason per_bc_reason | |
3408 = Deoptimization::reason_recorded_per_bytecode_if_any(reason); | |
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3409 ciMethod* m = Deoptimization::reason_is_speculate(reason) ? this->method() : NULL; |
0 | 3410 if ((per_bc_reason == Deoptimization::Reason_none |
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3411 || md->has_trap_at(bci, m, reason) != 0) |
0 | 3412 // The trap frequency measure we care about is the recompile count: |
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3413 && md->trap_recompiled_at(bci, m) |
0 | 3414 && md->overflow_recompile_count() >= bc_cutoff) { |
3415 // Do not emit a trap here if it has already caused recompilations. | |
3416 // Also, if there are multiple reasons, or if there is no per-BCI record, | |
3417 // assume the worst. | |
3418 if (log()) | |
3419 log()->elem("observe trap='%s recompiled' count='%d' recompiles2='%d'", | |
3420 Deoptimization::trap_reason_name(reason), | |
3421 md->trap_count(reason), | |
3422 md->overflow_recompile_count()); | |
3423 return true; | |
3424 } else if (trap_count(reason) != 0 | |
3425 && decompile_count() >= m_cutoff) { | |
3426 // Too many recompiles globally, and we have seen this sort of trap. | |
3427 // Use cumulative decompile_count, not just md->decompile_count. | |
3428 if (log()) | |
3429 log()->elem("observe trap='%s' count='%d' mcount='%d' decompiles='%d' mdecompiles='%d'", | |
3430 Deoptimization::trap_reason_name(reason), | |
3431 md->trap_count(reason), trap_count(reason), | |
3432 md->decompile_count(), decompile_count()); | |
3433 return true; | |
3434 } else { | |
3435 // The coast is clear. | |
3436 return false; | |
3437 } | |
3438 } | |
3439 | |
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3440 // Compute when not to trap. Used by matching trap based nodes and |
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|
3441 // NullCheck optimization. |
41b780b43b74
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|
3442 void Compile::set_allowed_deopt_reasons() { |
41b780b43b74
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|
3443 _allowed_reasons = 0; |
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3444 if (is_method_compilation()) { |
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|
3445 for (int rs = (int)Deoptimization::Reason_none+1; rs < Compile::trapHistLength; rs++) { |
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|
3446 assert(rs < BitsPerInt, "recode bit map"); |
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3447 if (!too_many_traps((Deoptimization::DeoptReason) rs)) { |
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3448 _allowed_reasons |= nth_bit(rs); |
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3449 } |
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|
3450 } |
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|
3451 } |
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|
3452 } |
0 | 3453 |
3454 #ifndef PRODUCT | |
3455 //------------------------------verify_graph_edges--------------------------- | |
3456 // Walk the Graph and verify that there is a one-to-one correspondence | |
3457 // between Use-Def edges and Def-Use edges in the graph. | |
3458 void Compile::verify_graph_edges(bool no_dead_code) { | |
3459 if (VerifyGraphEdges) { | |
3460 ResourceArea *area = Thread::current()->resource_area(); | |
3461 Unique_Node_List visited(area); | |
3462 // Call recursive graph walk to check edges | |
3463 _root->verify_edges(visited); | |
3464 if (no_dead_code) { | |
3465 // Now make sure that no visited node is used by an unvisited node. | |
3466 bool dead_nodes = 0; | |
3467 Unique_Node_List checked(area); | |
3468 while (visited.size() > 0) { | |
3469 Node* n = visited.pop(); | |
3470 checked.push(n); | |
3471 for (uint i = 0; i < n->outcnt(); i++) { | |
3472 Node* use = n->raw_out(i); | |
3473 if (checked.member(use)) continue; // already checked | |
3474 if (visited.member(use)) continue; // already in the graph | |
3475 if (use->is_Con()) continue; // a dead ConNode is OK | |
3476 // At this point, we have found a dead node which is DU-reachable. | |
3477 if (dead_nodes++ == 0) | |
3478 tty->print_cr("*** Dead nodes reachable via DU edges:"); | |
3479 use->dump(2); | |
3480 tty->print_cr("---"); | |
3481 checked.push(use); // No repeats; pretend it is now checked. | |
3482 } | |
3483 } | |
3484 assert(dead_nodes == 0, "using nodes must be reachable from root"); | |
3485 } | |
3486 } | |
3487 } | |
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3488 |
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|
3489 // Verify GC barriers consistency |
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|
3490 // Currently supported: |
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|
3491 // - G1 pre-barriers (see GraphKit::g1_write_barrier_pre()) |
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3492 void Compile::verify_barriers() { |
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|
3493 if (UseG1GC) { |
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3494 // Verify G1 pre-barriers |
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3495 const int marking_offset = in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active()); |
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3496 |
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|
3497 ResourceArea *area = Thread::current()->resource_area(); |
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3498 Unique_Node_List visited(area); |
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3499 Node_List worklist(area); |
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3500 // We're going to walk control flow backwards starting from the Root |
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3501 worklist.push(_root); |
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|
3502 while (worklist.size() > 0) { |
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|
3503 Node* x = worklist.pop(); |
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|
3504 if (x == NULL || x == top()) continue; |
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|
3505 if (visited.member(x)) { |
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|
3506 continue; |
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|
3507 } else { |
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|
3508 visited.push(x); |
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|
3509 } |
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|
3510 |
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3511 if (x->is_Region()) { |
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3512 for (uint i = 1; i < x->req(); i++) { |
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3513 worklist.push(x->in(i)); |
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3514 } |
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|
3515 } else { |
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|
3516 worklist.push(x->in(0)); |
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3517 // We are looking for the pattern: |
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3518 // /->ThreadLocal |
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3519 // If->Bool->CmpI->LoadB->AddP->ConL(marking_offset) |
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3520 // \->ConI(0) |
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3521 // We want to verify that the If and the LoadB have the same control |
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3522 // See GraphKit::g1_write_barrier_pre() |
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3523 if (x->is_If()) { |
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3524 IfNode *iff = x->as_If(); |
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3525 if (iff->in(1)->is_Bool() && iff->in(1)->in(1)->is_Cmp()) { |
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3526 CmpNode *cmp = iff->in(1)->in(1)->as_Cmp(); |
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3527 if (cmp->Opcode() == Op_CmpI && cmp->in(2)->is_Con() && cmp->in(2)->bottom_type()->is_int()->get_con() == 0 |
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3528 && cmp->in(1)->is_Load()) { |
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3529 LoadNode* load = cmp->in(1)->as_Load(); |
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3530 if (load->Opcode() == Op_LoadB && load->in(2)->is_AddP() && load->in(2)->in(2)->Opcode() == Op_ThreadLocal |
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3531 && load->in(2)->in(3)->is_Con() |
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3532 && load->in(2)->in(3)->bottom_type()->is_intptr_t()->get_con() == marking_offset) { |
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|
3533 |
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3534 Node* if_ctrl = iff->in(0); |
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3535 Node* load_ctrl = load->in(0); |
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|
3536 |
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3537 if (if_ctrl != load_ctrl) { |
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3538 // Skip possible CProj->NeverBranch in infinite loops |
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3539 if ((if_ctrl->is_Proj() && if_ctrl->Opcode() == Op_CProj) |
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3540 && (if_ctrl->in(0)->is_MultiBranch() && if_ctrl->in(0)->Opcode() == Op_NeverBranch)) { |
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3541 if_ctrl = if_ctrl->in(0)->in(0); |
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3542 } |
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|
3543 } |
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3544 assert(load_ctrl != NULL && if_ctrl == load_ctrl, "controls must match"); |
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3545 } |
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|
3546 } |
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|
3547 } |
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|
3548 } |
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|
3549 } |
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|
3550 } |
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|
3551 } |
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|
3552 } |
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|
3553 |
0 | 3554 #endif |
3555 | |
3556 // The Compile object keeps track of failure reasons separately from the ciEnv. | |
3557 // This is required because there is not quite a 1-1 relation between the | |
3558 // ciEnv and its compilation task and the Compile object. Note that one | |
3559 // ciEnv might use two Compile objects, if C2Compiler::compile_method decides | |
3560 // to backtrack and retry without subsuming loads. Other than this backtracking | |
3561 // behavior, the Compile's failure reason is quietly copied up to the ciEnv | |
3562 // by the logic in C2Compiler. | |
3563 void Compile::record_failure(const char* reason) { | |
3564 if (log() != NULL) { | |
3565 log()->elem("failure reason='%s' phase='compile'", reason); | |
3566 } | |
3567 if (_failure_reason == NULL) { | |
3568 // Record the first failure reason. | |
3569 _failure_reason = reason; | |
3570 } | |
10405 | 3571 |
3572 EventCompilerFailure event; | |
3573 if (event.should_commit()) { | |
3574 event.set_compileID(Compile::compile_id()); | |
3575 event.set_failure(reason); | |
3576 event.commit(); | |
3577 } | |
3578 | |
222 | 3579 if (!C->failure_reason_is(C2Compiler::retry_no_subsuming_loads())) { |
10405 | 3580 C->print_method(PHASE_FAILURE); |
222 | 3581 } |
0 | 3582 _root = NULL; // flush the graph, too |
3583 } | |
3584 | |
3585 Compile::TracePhase::TracePhase(const char* name, elapsedTimer* accumulator, bool dolog) | |
7196
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3586 : TraceTime(NULL, accumulator, false NOT_PRODUCT( || TimeCompiler ), false), |
2aff40cb4703
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|
3587 _phase_name(name), _dolog(dolog) |
0 | 3588 { |
3589 if (dolog) { | |
3590 C = Compile::current(); | |
3591 _log = C->log(); | |
3592 } else { | |
3593 C = NULL; | |
3594 _log = NULL; | |
3595 } | |
3596 if (_log != NULL) { | |
7196
2aff40cb4703
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parents:
6888
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changeset
|
3597 _log->begin_head("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
0 | 3598 _log->stamp(); |
3599 _log->end_head(); | |
3600 } | |
3601 } | |
3602 | |
3603 Compile::TracePhase::~TracePhase() { | |
7196
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|
3604 |
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|
3605 C = Compile::current(); |
2aff40cb4703
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parents:
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changeset
|
3606 if (_dolog) { |
2aff40cb4703
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bharadwaj
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6888
diff
changeset
|
3607 _log = C->log(); |
2aff40cb4703
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diff
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|
3608 } else { |
2aff40cb4703
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bharadwaj
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6888
diff
changeset
|
3609 _log = NULL; |
2aff40cb4703
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bharadwaj
parents:
6888
diff
changeset
|
3610 } |
2aff40cb4703
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changeset
|
3611 |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
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6888
diff
changeset
|
3612 #ifdef ASSERT |
2aff40cb4703
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bharadwaj
parents:
6888
diff
changeset
|
3613 if (PrintIdealNodeCount) { |
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
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diff
changeset
|
3614 tty->print_cr("phase name='%s' nodes='%d' live='%d' live_graph_walk='%d'", |
2aff40cb4703
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bharadwaj
parents:
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diff
changeset
|
3615 _phase_name, C->unique(), C->live_nodes(), C->count_live_nodes_by_graph_walk()); |
2aff40cb4703
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bharadwaj
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changeset
|
3616 } |
2aff40cb4703
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changeset
|
3617 |
2aff40cb4703
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diff
changeset
|
3618 if (VerifyIdealNodeCount) { |
2aff40cb4703
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bharadwaj
parents:
6888
diff
changeset
|
3619 Compile::current()->print_missing_nodes(); |
2aff40cb4703
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bharadwaj
parents:
6888
diff
changeset
|
3620 } |
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diff
changeset
|
3621 #endif |
2aff40cb4703
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|
3622 |
0 | 3623 if (_log != NULL) { |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
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6888
diff
changeset
|
3624 _log->done("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
0 | 3625 } |
3626 } | |
2008 | 3627 |
3628 //============================================================================= | |
3629 // Two Constant's are equal when the type and the value are equal. | |
3630 bool Compile::Constant::operator==(const Constant& other) { | |
3631 if (type() != other.type() ) return false; | |
3632 if (can_be_reused() != other.can_be_reused()) return false; | |
3633 // For floating point values we compare the bit pattern. | |
3634 switch (type()) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6619
diff
changeset
|
3635 case T_FLOAT: return (_v._value.i == other._v._value.i); |
2008 | 3636 case T_LONG: |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6619
diff
changeset
|
3637 case T_DOUBLE: return (_v._value.j == other._v._value.j); |
2008 | 3638 case T_OBJECT: |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6619
diff
changeset
|
3639 case T_ADDRESS: return (_v._value.l == other._v._value.l); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6619
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|
3640 case T_VOID: return (_v._value.l == other._v._value.l); // jump-table entries |
6888
cfe522e6461c
8000623: tools/javac/Diagnostics/6769027/T6769027.java crashes in PSPromotionManager::copy_to_survivor_space
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6849
diff
changeset
|
3641 case T_METADATA: return (_v._metadata == other._v._metadata); |
2008 | 3642 default: ShouldNotReachHere(); |
3643 } | |
3644 return false; | |
3645 } | |
3646 | |
3647 static int type_to_size_in_bytes(BasicType t) { | |
3648 switch (t) { | |
3649 case T_LONG: return sizeof(jlong ); | |
3650 case T_FLOAT: return sizeof(jfloat ); | |
3651 case T_DOUBLE: return sizeof(jdouble); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3652 case T_METADATA: return sizeof(Metadata*); |
2008 | 3653 // We use T_VOID as marker for jump-table entries (labels) which |
4114
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7003454: order constants in constant table by number of references in code
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diff
changeset
|
3654 // need an internal word relocation. |
2008 | 3655 case T_VOID: |
3656 case T_ADDRESS: | |
3657 case T_OBJECT: return sizeof(jobject); | |
3658 } | |
3659 | |
3660 ShouldNotReachHere(); | |
3661 return -1; | |
3662 } | |
3663 | |
4114
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twisti
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|
3664 int Compile::ConstantTable::qsort_comparator(Constant* a, Constant* b) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3665 // sort descending |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3666 if (a->freq() > b->freq()) return -1; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3667 if (a->freq() < b->freq()) return 1; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3668 return 0; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3669 } |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3670 |
2008 | 3671 void Compile::ConstantTable::calculate_offsets_and_size() { |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3672 // First, sort the array by frequencies. |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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diff
changeset
|
3673 _constants.sort(qsort_comparator); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
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|
3674 |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3675 #ifdef ASSERT |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3676 // Make sure all jump-table entries were sorted to the end of the |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3677 // array (they have a negative frequency). |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3678 bool found_void = false; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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diff
changeset
|
3679 for (int i = 0; i < _constants.length(); i++) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3680 Constant con = _constants.at(i); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3681 if (con.type() == T_VOID) |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3682 found_void = true; // jump-tables |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3683 else |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3684 assert(!found_void, "wrong sorting"); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3685 } |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3686 #endif |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3687 |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3688 int offset = 0; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3689 for (int i = 0; i < _constants.length(); i++) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3690 Constant* con = _constants.adr_at(i); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3691 |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3692 // Align offset for type. |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3693 int typesize = type_to_size_in_bytes(con->type()); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3694 offset = align_size_up(offset, typesize); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3695 con->set_offset(offset); // set constant's offset |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3696 |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3697 if (con->type() == T_VOID) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3698 MachConstantNode* n = (MachConstantNode*) con->get_jobject(); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3699 offset = offset + typesize * n->outcnt(); // expand jump-table |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3700 } else { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3701 offset = offset + typesize; |
2008 | 3702 } |
3703 } | |
3704 | |
3705 // Align size up to the next section start (which is insts; see | |
3706 // CodeBuffer::align_at_start). | |
3707 assert(_size == -1, "already set?"); | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3708 _size = align_size_up(offset, CodeEntryAlignment); |
2008 | 3709 } |
3710 | |
3711 void Compile::ConstantTable::emit(CodeBuffer& cb) { | |
3712 MacroAssembler _masm(&cb); | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3713 for (int i = 0; i < _constants.length(); i++) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3714 Constant con = _constants.at(i); |
23822
626f594dffa6
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
csahu
parents:
23799
diff
changeset
|
3715 address constant_addr = NULL; |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3716 switch (con.type()) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3717 case T_LONG: constant_addr = _masm.long_constant( con.get_jlong() ); break; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3718 case T_FLOAT: constant_addr = _masm.float_constant( con.get_jfloat() ); break; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3719 case T_DOUBLE: constant_addr = _masm.double_constant(con.get_jdouble()); break; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3720 case T_OBJECT: { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3721 jobject obj = con.get_jobject(); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3722 int oop_index = _masm.oop_recorder()->find_index(obj); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3723 constant_addr = _masm.address_constant((address) obj, oop_Relocation::spec(oop_index)); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3724 break; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3725 } |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3726 case T_ADDRESS: { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3727 address addr = (address) con.get_jobject(); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3728 constant_addr = _masm.address_constant(addr); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3729 break; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3730 } |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3731 // We use T_VOID as marker for jump-table entries (labels) which |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3732 // need an internal word relocation. |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3733 case T_VOID: { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3734 MachConstantNode* n = (MachConstantNode*) con.get_jobject(); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3735 // Fill the jump-table with a dummy word. The real value is |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3736 // filled in later in fill_jump_table. |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3737 address dummy = (address) n; |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3738 constant_addr = _masm.address_constant(dummy); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3739 // Expand jump-table |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3740 for (uint i = 1; i < n->outcnt(); i++) { |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3741 address temp_addr = _masm.address_constant(dummy + i); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3742 assert(temp_addr, "consts section too small"); |
2008 | 3743 } |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3744 break; |
2008 | 3745 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3746 case T_METADATA: { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3747 Metadata* obj = con.get_metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3748 int metadata_index = _masm.oop_recorder()->find_index(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3749 constant_addr = _masm.address_constant((address) obj, metadata_Relocation::spec(metadata_index)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3750 break; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3751 } |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3752 default: ShouldNotReachHere(); |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3753 } |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3754 assert(constant_addr, "consts section too small"); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
3755 assert((constant_addr - _masm.code()->consts()->start()) == con.offset(), |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
3756 err_msg_res("must be: %d == %d", (int) (constant_addr - _masm.code()->consts()->start()), (int)(con.offset()))); |
2008 | 3757 } |
3758 } | |
3759 | |
3760 int Compile::ConstantTable::find_offset(Constant& con) const { | |
3761 int idx = _constants.find(con); | |
3762 assert(idx != -1, "constant must be in constant table"); | |
3763 int offset = _constants.at(idx).offset(); | |
3764 assert(offset != -1, "constant table not emitted yet?"); | |
3765 return offset; | |
3766 } | |
3767 | |
3768 void Compile::ConstantTable::add(Constant& con) { | |
3769 if (con.can_be_reused()) { | |
3770 int idx = _constants.find(con); | |
3771 if (idx != -1 && _constants.at(idx).can_be_reused()) { | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3772 _constants.adr_at(idx)->inc_freq(con.freq()); // increase the frequency by the current value |
2008 | 3773 return; |
3774 } | |
3775 } | |
3776 (void) _constants.append(con); | |
3777 } | |
3778 | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3779 Compile::Constant Compile::ConstantTable::add(MachConstantNode* n, BasicType type, jvalue value) { |
12023
d1034bd8cefc
8022284: Hide internal data structure in PhaseCFG
adlertz
parents:
10405
diff
changeset
|
3780 Block* b = Compile::current()->cfg()->get_block_for_node(n); |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3781 Constant con(type, value, b->_freq); |
2008 | 3782 add(con); |
3783 return con; | |
3784 } | |
3785 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3786 Compile::Constant Compile::ConstantTable::add(Metadata* metadata) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3787 Constant con(metadata); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3788 add(con); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3789 return con; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3790 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3791 |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3792 Compile::Constant Compile::ConstantTable::add(MachConstantNode* n, MachOper* oper) { |
2008 | 3793 jvalue value; |
3794 BasicType type = oper->type()->basic_type(); | |
3795 switch (type) { | |
3796 case T_LONG: value.j = oper->constantL(); break; | |
3797 case T_FLOAT: value.f = oper->constantF(); break; | |
3798 case T_DOUBLE: value.d = oper->constantD(); break; | |
3799 case T_OBJECT: | |
3800 case T_ADDRESS: value.l = (jobject) oper->constant(); break; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3801 case T_METADATA: return add((Metadata*)oper->constant()); break; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3802 default: guarantee(false, err_msg_res("unhandled type: %s", type2name(type))); |
2008 | 3803 } |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3804 return add(n, type, value); |
2008 | 3805 } |
3806 | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3807 Compile::Constant Compile::ConstantTable::add_jump_table(MachConstantNode* n) { |
2008 | 3808 jvalue value; |
3809 // We can use the node pointer here to identify the right jump-table | |
3810 // as this method is called from Compile::Fill_buffer right before | |
3811 // the MachNodes are emitted and the jump-table is filled (means the | |
3812 // MachNode pointers do not change anymore). | |
3813 value.l = (jobject) n; | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3814 Constant con(T_VOID, value, next_jump_table_freq(), false); // Labels of a jump-table cannot be reused. |
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3815 add(con); |
2008 | 3816 return con; |
3817 } | |
3818 | |
3819 void Compile::ConstantTable::fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const { | |
3820 // If called from Compile::scratch_emit_size do nothing. | |
3821 if (Compile::current()->in_scratch_emit_size()) return; | |
3822 | |
3823 assert(labels.is_nonempty(), "must be"); | |
6268
6c5b7a6becc8
7187454: stack overflow in C2 compiler thread on Solaris x86
kvn
parents:
6179
diff
changeset
|
3824 assert((uint) labels.length() == n->outcnt(), err_msg_res("must be equal: %d == %d", labels.length(), n->outcnt())); |
2008 | 3825 |
3826 // Since MachConstantNode::constant_offset() also contains | |
3827 // table_base_offset() we need to subtract the table_base_offset() | |
3828 // to get the plain offset into the constant table. | |
3829 int offset = n->constant_offset() - table_base_offset(); | |
3830 | |
3831 MacroAssembler _masm(&cb); | |
3832 address* jump_table_base = (address*) (_masm.code()->consts()->start() + offset); | |
3833 | |
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3834 for (uint i = 0; i < n->outcnt(); i++) { |
2008 | 3835 address* constant_addr = &jump_table_base[i]; |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
3836 assert(*constant_addr == (((address) n) + i), err_msg_res("all jump-table entries must contain adjusted node pointer: " INTPTR_FORMAT " == " INTPTR_FORMAT, p2i(*constant_addr), p2i(((address) n) + i))); |
2008 | 3837 *constant_addr = cb.consts()->target(*labels.at(i), (address) constant_addr); |
3838 cb.consts()->relocate((address) constant_addr, relocInfo::internal_word_type); | |
3839 } | |
3840 } | |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3841 |
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3842 void Compile::dump_inlining() { |
12295 | 3843 if (print_inlining() || print_intrinsics()) { |
7473 | 3844 // Print inlining message for candidates that we couldn't inline |
3845 // for lack of space or non constant receiver | |
3846 for (int i = 0; i < _late_inlines.length(); i++) { | |
3847 CallGenerator* cg = _late_inlines.at(i); | |
3848 cg->print_inlining_late("live nodes > LiveNodeCountInliningCutoff"); | |
3849 } | |
3850 Unique_Node_List useful; | |
3851 useful.push(root()); | |
3852 for (uint next = 0; next < useful.size(); ++next) { | |
3853 Node* n = useful.at(next); | |
3854 if (n->is_Call() && n->as_Call()->generator() != NULL && n->as_Call()->generator()->call_node() == n) { | |
3855 CallNode* call = n->as_Call(); | |
3856 CallGenerator* cg = call->generator(); | |
3857 cg->print_inlining_late("receiver not constant"); | |
3858 } | |
3859 uint max = n->len(); | |
3860 for ( uint i = 0; i < max; ++i ) { | |
3861 Node *m = n->in(i); | |
3862 if ( m == NULL ) continue; | |
3863 useful.push(m); | |
3864 } | |
3865 } | |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3866 for (int i = 0; i < _print_inlining_list->length(); i++) { |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17914
diff
changeset
|
3867 tty->print("%s", _print_inlining_list->adr_at(i)->ss()->as_string()); |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3868 } |
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3869 } |
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3870 } |
8048
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3871 |
17622 | 3872 // Dump inlining replay data to the stream. |
3873 // Don't change thread state and acquire any locks. | |
3874 void Compile::dump_inline_data(outputStream* out) { | |
3875 InlineTree* inl_tree = ilt(); | |
3876 if (inl_tree != NULL) { | |
3877 out->print(" inline %d", inl_tree->count()); | |
3878 inl_tree->dump_replay_data(out); | |
3879 } | |
3880 } | |
3881 | |
8048
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3882 int Compile::cmp_expensive_nodes(Node* n1, Node* n2) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3883 if (n1->Opcode() < n2->Opcode()) return -1; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3884 else if (n1->Opcode() > n2->Opcode()) return 1; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3885 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3886 assert(n1->req() == n2->req(), err_msg_res("can't compare %s nodes: n1->req() = %d, n2->req() = %d", NodeClassNames[n1->Opcode()], n1->req(), n2->req())); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3887 for (uint i = 1; i < n1->req(); i++) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3888 if (n1->in(i) < n2->in(i)) return -1; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3889 else if (n1->in(i) > n2->in(i)) return 1; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3890 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3891 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3892 return 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3893 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3894 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3895 int Compile::cmp_expensive_nodes(Node** n1p, Node** n2p) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3896 Node* n1 = *n1p; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3897 Node* n2 = *n2p; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3898 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3899 return cmp_expensive_nodes(n1, n2); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3900 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3901 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3902 void Compile::sort_expensive_nodes() { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3903 if (!expensive_nodes_sorted()) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3904 _expensive_nodes->sort(cmp_expensive_nodes); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3905 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3906 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3907 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3908 bool Compile::expensive_nodes_sorted() const { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3909 for (int i = 1; i < _expensive_nodes->length(); i++) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3910 if (cmp_expensive_nodes(_expensive_nodes->adr_at(i), _expensive_nodes->adr_at(i-1)) < 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3911 return false; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
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diff
changeset
|
3912 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3913 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3914 return true; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3915 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3916 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3917 bool Compile::should_optimize_expensive_nodes(PhaseIterGVN &igvn) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3918 if (_expensive_nodes->length() == 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3919 return false; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3920 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3921 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3922 assert(OptimizeExpensiveOps, "optimization off?"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3923 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3924 // Take this opportunity to remove dead nodes from the list |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3925 int j = 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3926 for (int i = 0; i < _expensive_nodes->length(); i++) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3927 Node* n = _expensive_nodes->at(i); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3928 if (!n->is_unreachable(igvn)) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3929 assert(n->is_expensive(), "should be expensive"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3930 _expensive_nodes->at_put(j, n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3931 j++; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3932 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3933 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3934 _expensive_nodes->trunc_to(j); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3935 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3936 // Then sort the list so that similar nodes are next to each other |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3937 // and check for at least two nodes of identical kind with same data |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3938 // inputs. |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3939 sort_expensive_nodes(); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3940 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3941 for (int i = 0; i < _expensive_nodes->length()-1; i++) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3942 if (cmp_expensive_nodes(_expensive_nodes->adr_at(i), _expensive_nodes->adr_at(i+1)) == 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3943 return true; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3944 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3945 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3946 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3947 return false; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3948 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3949 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3950 void Compile::cleanup_expensive_nodes(PhaseIterGVN &igvn) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3951 if (_expensive_nodes->length() == 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3952 return; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3953 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3954 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3955 assert(OptimizeExpensiveOps, "optimization off?"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3956 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3957 // Sort to bring similar nodes next to each other and clear the |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3958 // control input of nodes for which there's only a single copy. |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3959 sort_expensive_nodes(); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3960 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3961 int j = 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3962 int identical = 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3963 int i = 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3964 for (; i < _expensive_nodes->length()-1; i++) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3965 assert(j <= i, "can't write beyond current index"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3966 if (_expensive_nodes->at(i)->Opcode() == _expensive_nodes->at(i+1)->Opcode()) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3967 identical++; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3968 _expensive_nodes->at_put(j++, _expensive_nodes->at(i)); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3969 continue; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3970 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3971 if (identical > 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3972 _expensive_nodes->at_put(j++, _expensive_nodes->at(i)); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3973 identical = 0; |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3974 } else { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3975 Node* n = _expensive_nodes->at(i); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3976 igvn.hash_delete(n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3977 n->set_req(0, NULL); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3978 igvn.hash_insert(n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3979 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3980 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3981 if (identical > 0) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3982 _expensive_nodes->at_put(j++, _expensive_nodes->at(i)); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3983 } else if (_expensive_nodes->length() >= 1) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3984 Node* n = _expensive_nodes->at(i); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3985 igvn.hash_delete(n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3986 n->set_req(0, NULL); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3987 igvn.hash_insert(n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3988 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3989 _expensive_nodes->trunc_to(j); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3990 } |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3991 |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3992 void Compile::add_expensive_node(Node * n) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3993 assert(!_expensive_nodes->contains(n), "duplicate entry in expensive list"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3994 assert(n->is_expensive(), "expensive nodes with non-null control here only"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3995 assert(!n->is_CFG() && !n->is_Mem(), "no cfg or memory nodes here"); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3996 if (OptimizeExpensiveOps) { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3997 _expensive_nodes->append(n); |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3998 } else { |
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3999 // Clear control input and let IGVN optimize expensive nodes if |
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4000 // OptimizeExpensiveOps is off. |
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4001 n->set_req(0, NULL); |
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4002 } |
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4003 } |
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4004 |
12966 | 4005 /** |
4006 * Remove the speculative part of types and clean up the graph | |
4007 */ | |
4008 void Compile::remove_speculative_types(PhaseIterGVN &igvn) { | |
4009 if (UseTypeSpeculation) { | |
4010 Unique_Node_List worklist; | |
4011 worklist.push(root()); | |
4012 int modified = 0; | |
4013 // Go over all type nodes that carry a speculative type, drop the | |
4014 // speculative part of the type and enqueue the node for an igvn | |
4015 // which may optimize it out. | |
4016 for (uint next = 0; next < worklist.size(); ++next) { | |
4017 Node *n = worklist.at(next); | |
17671
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4018 if (n->is_Type()) { |
12966 | 4019 TypeNode* tn = n->as_Type(); |
17671
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4020 const Type* t = tn->type(); |
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4021 const Type* t_no_spec = t->remove_speculative(); |
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4022 if (t_no_spec != t) { |
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4023 bool in_hash = igvn.hash_delete(n); |
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4024 assert(in_hash, "node should be in igvn hash table"); |
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4025 tn->set_type(t_no_spec); |
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4026 igvn.hash_insert(n); |
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4027 igvn._worklist.push(n); // give it a chance to go away |
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4028 modified++; |
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4029 } |
12966 | 4030 } |
4031 uint max = n->len(); | |
4032 for( uint i = 0; i < max; ++i ) { | |
4033 Node *m = n->in(i); | |
4034 if (not_a_node(m)) continue; | |
4035 worklist.push(m); | |
4036 } | |
4037 } | |
4038 // Drop the speculative part of all types in the igvn's type table | |
4039 igvn.remove_speculative_types(); | |
4040 if (modified > 0) { | |
4041 igvn.optimize(); | |
4042 } | |
17671
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4043 #ifdef ASSERT |
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4044 // Verify that after the IGVN is over no speculative type has resurfaced |
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4045 worklist.clear(); |
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4046 worklist.push(root()); |
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4047 for (uint next = 0; next < worklist.size(); ++next) { |
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4048 Node *n = worklist.at(next); |
17895
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4049 const Type* t = igvn.type_or_null(n); |
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4050 assert((t == NULL) || (t == t->remove_speculative()), "no more speculative types"); |
17671
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4051 if (n->is_Type()) { |
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4052 t = n->as_Type()->type(); |
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4053 assert(t == t->remove_speculative(), "no more speculative types"); |
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4054 } |
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4055 uint max = n->len(); |
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4056 for( uint i = 0; i < max; ++i ) { |
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4057 Node *m = n->in(i); |
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4058 if (not_a_node(m)) continue; |
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4059 worklist.push(m); |
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4060 } |
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4061 } |
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4062 igvn.check_no_speculative_types(); |
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4063 #endif |
12966 | 4064 } |
4065 } | |
4066 | |
23799
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4067 // Convert integer value to a narrowed long type dependent on ctrl (for example, a range check) |
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4068 Node* Compile::constrained_convI2L(PhaseGVN* phase, Node* value, const TypeInt* itype, Node* ctrl) { |
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4069 if (ctrl != NULL) { |
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4070 // Express control dependency by a CastII node with a narrow type. |
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4071 value = new (phase->C) CastIINode(value, itype, false, true /* range check dependency */); |
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4072 // Make the CastII node dependent on the control input to prevent the narrowed ConvI2L |
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4073 // node from floating above the range check during loop optimizations. Otherwise, the |
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4074 // ConvI2L node may be eliminated independently of the range check, causing the data path |
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4075 // to become TOP while the control path is still there (although it's unreachable). |
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4076 value->set_req(0, ctrl); |
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4077 // Save CastII node to remove it after loop optimizations. |
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4078 phase->C->add_range_check_cast(value); |
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4079 value = phase->transform(value); |
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4080 } |
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4081 const TypeLong* ltype = TypeLong::make(itype->_lo, itype->_hi, itype->_widen); |
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4082 return phase->transform(new (phase->C) ConvI2LNode(value, ltype)); |
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4083 } |
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4084 |
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4085 // Auxiliary method to support randomized stressing/fuzzing. |
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4086 // |
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4087 // This method can be called the arbitrary number of times, with current count |
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4088 // as the argument. The logic allows selecting a single candidate from the |
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4089 // running list of candidates as follows: |
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4090 // int count = 0; |
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4091 // Cand* selected = null; |
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4092 // while(cand = cand->next()) { |
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4093 // if (randomized_select(++count)) { |
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4094 // selected = cand; |
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4095 // } |
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4096 // } |
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4097 // |
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4098 // Including count equalizes the chances any candidate is "selected". |
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4099 // This is useful when we don't have the complete list of candidates to choose |
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4100 // from uniformly. In this case, we need to adjust the randomicity of the |
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4101 // selection, or else we will end up biasing the selection towards the latter |
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4102 // candidates. |
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4103 // |
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4104 // Quick back-envelope calculation shows that for the list of n candidates |
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4105 // the equal probability for the candidate to persist as "best" can be |
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4106 // achieved by replacing it with "next" k-th candidate with the probability |
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4107 // of 1/k. It can be easily shown that by the end of the run, the |
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4108 // probability for any candidate is converged to 1/n, thus giving the |
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4109 // uniform distribution among all the candidates. |
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4110 // |
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4111 // We don't care about the domain size as long as (RANDOMIZED_DOMAIN / count) is large. |
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4112 #define RANDOMIZED_DOMAIN_POW 29 |
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4113 #define RANDOMIZED_DOMAIN (1 << RANDOMIZED_DOMAIN_POW) |
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4114 #define RANDOMIZED_DOMAIN_MASK ((1 << (RANDOMIZED_DOMAIN_POW + 1)) - 1) |
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4115 bool Compile::randomized_select(int count) { |
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4116 assert(count > 0, "only positive"); |
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4117 return (os::random() & RANDOMIZED_DOMAIN_MASK) < (RANDOMIZED_DOMAIN / count); |
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4118 } |