Mercurial > hg > truffle
annotate src/share/vm/opto/compile.cpp @ 12278:8c84f04ff977
Merge
| author | kevinw |
|---|---|
| date | Wed, 18 Sep 2013 19:50:44 +0200 |
| parents | edb5ab0f3fe5 |
| children | 884ed7a10f09 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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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" |
| 1972 | 28 #include "classfile/systemDictionary.hpp" |
| 29 #include "code/exceptionHandlerTable.hpp" | |
| 30 #include "code/nmethod.hpp" | |
| 31 #include "compiler/compileLog.hpp" | |
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32 #include "compiler/disassembler.hpp" |
| 1972 | 33 #include "compiler/oopMap.hpp" |
| 34 #include "opto/addnode.hpp" | |
| 35 #include "opto/block.hpp" | |
| 36 #include "opto/c2compiler.hpp" | |
| 37 #include "opto/callGenerator.hpp" | |
| 38 #include "opto/callnode.hpp" | |
| 39 #include "opto/cfgnode.hpp" | |
| 40 #include "opto/chaitin.hpp" | |
| 41 #include "opto/compile.hpp" | |
| 42 #include "opto/connode.hpp" | |
| 43 #include "opto/divnode.hpp" | |
| 44 #include "opto/escape.hpp" | |
| 45 #include "opto/idealGraphPrinter.hpp" | |
| 46 #include "opto/loopnode.hpp" | |
| 47 #include "opto/machnode.hpp" | |
| 48 #include "opto/macro.hpp" | |
| 49 #include "opto/matcher.hpp" | |
| 50 #include "opto/memnode.hpp" | |
| 51 #include "opto/mulnode.hpp" | |
| 52 #include "opto/node.hpp" | |
| 53 #include "opto/opcodes.hpp" | |
| 54 #include "opto/output.hpp" | |
| 55 #include "opto/parse.hpp" | |
| 56 #include "opto/phaseX.hpp" | |
| 57 #include "opto/rootnode.hpp" | |
| 58 #include "opto/runtime.hpp" | |
| 59 #include "opto/stringopts.hpp" | |
| 60 #include "opto/type.hpp" | |
| 61 #include "opto/vectornode.hpp" | |
| 62 #include "runtime/arguments.hpp" | |
| 63 #include "runtime/signature.hpp" | |
| 64 #include "runtime/stubRoutines.hpp" | |
| 65 #include "runtime/timer.hpp" | |
| 10405 | 66 #include "trace/tracing.hpp" |
| 1972 | 67 #include "utilities/copy.hpp" |
| 68 #ifdef TARGET_ARCH_MODEL_x86_32 | |
| 69 # include "adfiles/ad_x86_32.hpp" | |
| 70 #endif | |
| 71 #ifdef TARGET_ARCH_MODEL_x86_64 | |
| 72 # include "adfiles/ad_x86_64.hpp" | |
| 73 #endif | |
| 74 #ifdef TARGET_ARCH_MODEL_sparc | |
| 75 # include "adfiles/ad_sparc.hpp" | |
| 76 #endif | |
| 77 #ifdef TARGET_ARCH_MODEL_zero | |
| 78 # include "adfiles/ad_zero.hpp" | |
| 79 #endif | |
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80 #ifdef TARGET_ARCH_MODEL_arm |
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81 # include "adfiles/ad_arm.hpp" |
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82 #endif |
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83 #ifdef TARGET_ARCH_MODEL_ppc |
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84 # include "adfiles/ad_ppc.hpp" |
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85 #endif |
| 0 | 86 |
| 2008 | 87 |
| 88 // -------------------- Compile::mach_constant_base_node ----------------------- | |
| 89 // Constant table base node singleton. | |
| 90 MachConstantBaseNode* Compile::mach_constant_base_node() { | |
| 91 if (_mach_constant_base_node == NULL) { | |
| 92 _mach_constant_base_node = new (C) MachConstantBaseNode(); | |
| 93 _mach_constant_base_node->add_req(C->root()); | |
| 94 } | |
| 95 return _mach_constant_base_node; | |
| 96 } | |
| 97 | |
| 98 | |
| 0 | 99 /// Support for intrinsics. |
| 100 | |
| 101 // Return the index at which m must be inserted (or already exists). | |
| 102 // The sort order is by the address of the ciMethod, with is_virtual as minor key. | |
| 103 int Compile::intrinsic_insertion_index(ciMethod* m, bool is_virtual) { | |
| 104 #ifdef ASSERT | |
| 105 for (int i = 1; i < _intrinsics->length(); i++) { | |
| 106 CallGenerator* cg1 = _intrinsics->at(i-1); | |
| 107 CallGenerator* cg2 = _intrinsics->at(i); | |
| 108 assert(cg1->method() != cg2->method() | |
| 109 ? cg1->method() < cg2->method() | |
| 110 : cg1->is_virtual() < cg2->is_virtual(), | |
| 111 "compiler intrinsics list must stay sorted"); | |
| 112 } | |
| 113 #endif | |
| 114 // Binary search sorted list, in decreasing intervals [lo, hi]. | |
| 115 int lo = 0, hi = _intrinsics->length()-1; | |
| 116 while (lo <= hi) { | |
| 117 int mid = (uint)(hi + lo) / 2; | |
| 118 ciMethod* mid_m = _intrinsics->at(mid)->method(); | |
| 119 if (m < mid_m) { | |
| 120 hi = mid-1; | |
| 121 } else if (m > mid_m) { | |
| 122 lo = mid+1; | |
| 123 } else { | |
| 124 // look at minor sort key | |
| 125 bool mid_virt = _intrinsics->at(mid)->is_virtual(); | |
| 126 if (is_virtual < mid_virt) { | |
| 127 hi = mid-1; | |
| 128 } else if (is_virtual > mid_virt) { | |
| 129 lo = mid+1; | |
| 130 } else { | |
| 131 return mid; // exact match | |
| 132 } | |
| 133 } | |
| 134 } | |
| 135 return lo; // inexact match | |
| 136 } | |
| 137 | |
| 138 void Compile::register_intrinsic(CallGenerator* cg) { | |
| 139 if (_intrinsics == NULL) { | |
| 7473 | 140 _intrinsics = new (comp_arena())GrowableArray<CallGenerator*>(comp_arena(), 60, 0, NULL); |
| 0 | 141 } |
| 142 // This code is stolen from ciObjectFactory::insert. | |
| 143 // Really, GrowableArray should have methods for | |
| 144 // insert_at, remove_at, and binary_search. | |
| 145 int len = _intrinsics->length(); | |
| 146 int index = intrinsic_insertion_index(cg->method(), cg->is_virtual()); | |
| 147 if (index == len) { | |
| 148 _intrinsics->append(cg); | |
| 149 } else { | |
| 150 #ifdef ASSERT | |
| 151 CallGenerator* oldcg = _intrinsics->at(index); | |
| 152 assert(oldcg->method() != cg->method() || oldcg->is_virtual() != cg->is_virtual(), "don't register twice"); | |
| 153 #endif | |
| 154 _intrinsics->append(_intrinsics->at(len-1)); | |
| 155 int pos; | |
| 156 for (pos = len-2; pos >= index; pos--) { | |
| 157 _intrinsics->at_put(pos+1,_intrinsics->at(pos)); | |
| 158 } | |
| 159 _intrinsics->at_put(index, cg); | |
| 160 } | |
| 161 assert(find_intrinsic(cg->method(), cg->is_virtual()) == cg, "registration worked"); | |
| 162 } | |
| 163 | |
| 164 CallGenerator* Compile::find_intrinsic(ciMethod* m, bool is_virtual) { | |
| 165 assert(m->is_loaded(), "don't try this on unloaded methods"); | |
| 166 if (_intrinsics != NULL) { | |
| 167 int index = intrinsic_insertion_index(m, is_virtual); | |
| 168 if (index < _intrinsics->length() | |
| 169 && _intrinsics->at(index)->method() == m | |
| 170 && _intrinsics->at(index)->is_virtual() == is_virtual) { | |
| 171 return _intrinsics->at(index); | |
| 172 } | |
| 173 } | |
| 174 // Lazily create intrinsics for intrinsic IDs well-known in the runtime. | |
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175 if (m->intrinsic_id() != vmIntrinsics::_none && |
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176 m->intrinsic_id() <= vmIntrinsics::LAST_COMPILER_INLINE) { |
| 0 | 177 CallGenerator* cg = make_vm_intrinsic(m, is_virtual); |
| 178 if (cg != NULL) { | |
| 179 // Save it for next time: | |
| 180 register_intrinsic(cg); | |
| 181 return cg; | |
| 182 } else { | |
| 183 gather_intrinsic_statistics(m->intrinsic_id(), is_virtual, _intrinsic_disabled); | |
| 184 } | |
| 185 } | |
| 186 return NULL; | |
| 187 } | |
| 188 | |
| 189 // Compile:: register_library_intrinsics and make_vm_intrinsic are defined | |
| 190 // in library_call.cpp. | |
| 191 | |
| 192 | |
| 193 #ifndef PRODUCT | |
| 194 // statistics gathering... | |
| 195 | |
| 196 juint Compile::_intrinsic_hist_count[vmIntrinsics::ID_LIMIT] = {0}; | |
| 197 jubyte Compile::_intrinsic_hist_flags[vmIntrinsics::ID_LIMIT] = {0}; | |
| 198 | |
| 199 bool Compile::gather_intrinsic_statistics(vmIntrinsics::ID id, bool is_virtual, int flags) { | |
| 200 assert(id > vmIntrinsics::_none && id < vmIntrinsics::ID_LIMIT, "oob"); | |
| 201 int oflags = _intrinsic_hist_flags[id]; | |
| 202 assert(flags != 0, "what happened?"); | |
| 203 if (is_virtual) { | |
| 204 flags |= _intrinsic_virtual; | |
| 205 } | |
| 206 bool changed = (flags != oflags); | |
| 207 if ((flags & _intrinsic_worked) != 0) { | |
| 208 juint count = (_intrinsic_hist_count[id] += 1); | |
| 209 if (count == 1) { | |
| 210 changed = true; // first time | |
| 211 } | |
| 212 // increment the overall count also: | |
| 213 _intrinsic_hist_count[vmIntrinsics::_none] += 1; | |
| 214 } | |
| 215 if (changed) { | |
| 216 if (((oflags ^ flags) & _intrinsic_virtual) != 0) { | |
| 217 // Something changed about the intrinsic's virtuality. | |
| 218 if ((flags & _intrinsic_virtual) != 0) { | |
| 219 // This is the first use of this intrinsic as a virtual call. | |
| 220 if (oflags != 0) { | |
| 221 // We already saw it as a non-virtual, so note both cases. | |
| 222 flags |= _intrinsic_both; | |
| 223 } | |
| 224 } else if ((oflags & _intrinsic_both) == 0) { | |
| 225 // This is the first use of this intrinsic as a non-virtual | |
| 226 flags |= _intrinsic_both; | |
| 227 } | |
| 228 } | |
| 229 _intrinsic_hist_flags[id] = (jubyte) (oflags | flags); | |
| 230 } | |
| 231 // update the overall flags also: | |
| 232 _intrinsic_hist_flags[vmIntrinsics::_none] |= (jubyte) flags; | |
| 233 return changed; | |
| 234 } | |
| 235 | |
| 236 static char* format_flags(int flags, char* buf) { | |
| 237 buf[0] = 0; | |
| 238 if ((flags & Compile::_intrinsic_worked) != 0) strcat(buf, ",worked"); | |
| 239 if ((flags & Compile::_intrinsic_failed) != 0) strcat(buf, ",failed"); | |
| 240 if ((flags & Compile::_intrinsic_disabled) != 0) strcat(buf, ",disabled"); | |
| 241 if ((flags & Compile::_intrinsic_virtual) != 0) strcat(buf, ",virtual"); | |
| 242 if ((flags & Compile::_intrinsic_both) != 0) strcat(buf, ",nonvirtual"); | |
| 243 if (buf[0] == 0) strcat(buf, ","); | |
| 244 assert(buf[0] == ',', "must be"); | |
| 245 return &buf[1]; | |
| 246 } | |
| 247 | |
| 248 void Compile::print_intrinsic_statistics() { | |
| 249 char flagsbuf[100]; | |
| 250 ttyLocker ttyl; | |
| 251 if (xtty != NULL) xtty->head("statistics type='intrinsic'"); | |
| 252 tty->print_cr("Compiler intrinsic usage:"); | |
| 253 juint total = _intrinsic_hist_count[vmIntrinsics::_none]; | |
| 254 if (total == 0) total = 1; // avoid div0 in case of no successes | |
| 255 #define PRINT_STAT_LINE(name, c, f) \ | |
| 256 tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(c), ((c) * 100.0) / total, name, f); | |
| 257 for (int index = 1 + (int)vmIntrinsics::_none; index < (int)vmIntrinsics::ID_LIMIT; index++) { | |
| 258 vmIntrinsics::ID id = (vmIntrinsics::ID) index; | |
| 259 int flags = _intrinsic_hist_flags[id]; | |
| 260 juint count = _intrinsic_hist_count[id]; | |
| 261 if ((flags | count) != 0) { | |
| 262 PRINT_STAT_LINE(vmIntrinsics::name_at(id), count, format_flags(flags, flagsbuf)); | |
| 263 } | |
| 264 } | |
| 265 PRINT_STAT_LINE("total", total, format_flags(_intrinsic_hist_flags[vmIntrinsics::_none], flagsbuf)); | |
| 266 if (xtty != NULL) xtty->tail("statistics"); | |
| 267 } | |
| 268 | |
| 269 void Compile::print_statistics() { | |
| 270 { ttyLocker ttyl; | |
| 271 if (xtty != NULL) xtty->head("statistics type='opto'"); | |
| 272 Parse::print_statistics(); | |
| 273 PhaseCCP::print_statistics(); | |
| 274 PhaseRegAlloc::print_statistics(); | |
| 275 Scheduling::print_statistics(); | |
| 276 PhasePeephole::print_statistics(); | |
| 277 PhaseIdealLoop::print_statistics(); | |
| 278 if (xtty != NULL) xtty->tail("statistics"); | |
| 279 } | |
| 280 if (_intrinsic_hist_flags[vmIntrinsics::_none] != 0) { | |
| 281 // put this under its own <statistics> element. | |
| 282 print_intrinsic_statistics(); | |
| 283 } | |
| 284 } | |
| 285 #endif //PRODUCT | |
| 286 | |
| 287 // Support for bundling info | |
| 288 Bundle* Compile::node_bundling(const Node *n) { | |
| 289 assert(valid_bundle_info(n), "oob"); | |
| 290 return &_node_bundling_base[n->_idx]; | |
| 291 } | |
| 292 | |
| 293 bool Compile::valid_bundle_info(const Node *n) { | |
| 294 return (_node_bundling_limit > n->_idx); | |
| 295 } | |
| 296 | |
| 297 | |
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298 void Compile::gvn_replace_by(Node* n, Node* nn) { |
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299 for (DUIterator_Last imin, i = n->last_outs(imin); i >= imin; ) { |
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300 Node* use = n->last_out(i); |
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301 bool is_in_table = initial_gvn()->hash_delete(use); |
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302 uint uses_found = 0; |
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303 for (uint j = 0; j < use->len(); j++) { |
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304 if (use->in(j) == n) { |
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305 if (j < use->req()) |
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306 use->set_req(j, nn); |
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307 else |
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308 use->set_prec(j, nn); |
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309 uses_found++; |
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310 } |
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311 } |
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312 if (is_in_table) { |
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313 // reinsert into table |
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314 initial_gvn()->hash_find_insert(use); |
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315 } |
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316 record_for_igvn(use); |
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317 i -= uses_found; // we deleted 1 or more copies of this edge |
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318 } |
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319 } |
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320 |
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321 |
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322 static inline bool not_a_node(const Node* n) { |
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323 if (n == NULL) return true; |
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324 if (((intptr_t)n & 1) != 0) return true; // uninitialized, etc. |
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325 if (*(address*)n == badAddress) return true; // kill by Node::destruct |
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326 return false; |
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327 } |
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328 |
| 0 | 329 // Identify all nodes that are reachable from below, useful. |
| 330 // Use breadth-first pass that records state in a Unique_Node_List, | |
| 331 // recursive traversal is slower. | |
| 332 void Compile::identify_useful_nodes(Unique_Node_List &useful) { | |
| 333 int estimated_worklist_size = unique(); | |
| 334 useful.map( estimated_worklist_size, NULL ); // preallocate space | |
| 335 | |
| 336 // Initialize worklist | |
| 337 if (root() != NULL) { useful.push(root()); } | |
| 338 // If 'top' is cached, declare it useful to preserve cached node | |
| 339 if( cached_top_node() ) { useful.push(cached_top_node()); } | |
| 340 | |
| 341 // Push all useful nodes onto the list, breadthfirst | |
| 342 for( uint next = 0; next < useful.size(); ++next ) { | |
| 343 assert( next < unique(), "Unique useful nodes < total nodes"); | |
| 344 Node *n = useful.at(next); | |
| 345 uint max = n->len(); | |
| 346 for( uint i = 0; i < max; ++i ) { | |
| 347 Node *m = n->in(i); | |
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348 if (not_a_node(m)) continue; |
| 0 | 349 useful.push(m); |
| 350 } | |
| 351 } | |
| 352 } | |
| 353 | |
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354 // Update dead_node_list with any missing dead nodes using useful |
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355 // list. Consider all non-useful nodes to be useless i.e., dead nodes. |
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356 void Compile::update_dead_node_list(Unique_Node_List &useful) { |
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357 uint max_idx = unique(); |
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358 VectorSet& useful_node_set = useful.member_set(); |
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359 |
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360 for (uint node_idx = 0; node_idx < max_idx; node_idx++) { |
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361 // If node with index node_idx is not in useful set, |
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362 // mark it as dead in dead node list. |
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363 if (! useful_node_set.test(node_idx) ) { |
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364 record_dead_node(node_idx); |
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365 } |
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366 } |
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367 } |
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368 |
| 7473 | 369 void Compile::remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful) { |
| 370 int shift = 0; | |
| 371 for (int i = 0; i < inlines->length(); i++) { | |
| 372 CallGenerator* cg = inlines->at(i); | |
| 373 CallNode* call = cg->call_node(); | |
| 374 if (shift > 0) { | |
| 375 inlines->at_put(i-shift, cg); | |
| 376 } | |
| 377 if (!useful.member(call)) { | |
| 378 shift++; | |
| 379 } | |
| 380 } | |
| 381 inlines->trunc_to(inlines->length()-shift); | |
| 382 } | |
| 383 | |
| 0 | 384 // Disconnect all useless nodes by disconnecting those at the boundary. |
| 385 void Compile::remove_useless_nodes(Unique_Node_List &useful) { | |
| 386 uint next = 0; | |
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387 while (next < useful.size()) { |
| 0 | 388 Node *n = useful.at(next++); |
| 389 // Use raw traversal of out edges since this code removes out edges | |
| 390 int max = n->outcnt(); | |
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391 for (int j = 0; j < max; ++j) { |
| 0 | 392 Node* child = n->raw_out(j); |
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393 if (! useful.member(child)) { |
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394 assert(!child->is_top() || child != top(), |
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395 "If top is cached in Compile object it is in useful list"); |
| 0 | 396 // Only need to remove this out-edge to the useless node |
| 397 n->raw_del_out(j); | |
| 398 --j; | |
| 399 --max; | |
| 400 } | |
| 401 } | |
| 402 if (n->outcnt() == 1 && n->has_special_unique_user()) { | |
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403 record_for_igvn(n->unique_out()); |
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404 } |
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405 } |
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406 // Remove useless macro and predicate opaq nodes |
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407 for (int i = C->macro_count()-1; i >= 0; i--) { |
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408 Node* n = C->macro_node(i); |
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409 if (!useful.member(n)) { |
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410 remove_macro_node(n); |
| 0 | 411 } |
| 412 } | |
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413 // Remove useless expensive node |
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414 for (int i = C->expensive_count()-1; i >= 0; i--) { |
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415 Node* n = C->expensive_node(i); |
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416 if (!useful.member(n)) { |
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417 remove_expensive_node(n); |
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418 } |
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419 } |
| 7473 | 420 // clean up the late inline lists |
| 421 remove_useless_late_inlines(&_string_late_inlines, useful); | |
| 10278 | 422 remove_useless_late_inlines(&_boxing_late_inlines, useful); |
| 7473 | 423 remove_useless_late_inlines(&_late_inlines, useful); |
| 0 | 424 debug_only(verify_graph_edges(true/*check for no_dead_code*/);) |
| 425 } | |
| 426 | |
| 427 //------------------------------frame_size_in_words----------------------------- | |
| 428 // frame_slots in units of words | |
| 429 int Compile::frame_size_in_words() const { | |
| 430 // shift is 0 in LP32 and 1 in LP64 | |
| 431 const int shift = (LogBytesPerWord - LogBytesPerInt); | |
| 432 int words = _frame_slots >> shift; | |
| 433 assert( words << shift == _frame_slots, "frame size must be properly aligned in LP64" ); | |
| 434 return words; | |
| 435 } | |
| 436 | |
| 437 // ============================================================================ | |
| 438 //------------------------------CompileWrapper--------------------------------- | |
| 439 class CompileWrapper : public StackObj { | |
| 440 Compile *const _compile; | |
| 441 public: | |
| 442 CompileWrapper(Compile* compile); | |
| 443 | |
| 444 ~CompileWrapper(); | |
| 445 }; | |
| 446 | |
| 447 CompileWrapper::CompileWrapper(Compile* compile) : _compile(compile) { | |
| 448 // the Compile* pointer is stored in the current ciEnv: | |
| 449 ciEnv* env = compile->env(); | |
| 450 assert(env == ciEnv::current(), "must already be a ciEnv active"); | |
| 451 assert(env->compiler_data() == NULL, "compile already active?"); | |
| 452 env->set_compiler_data(compile); | |
| 453 assert(compile == Compile::current(), "sanity"); | |
| 454 | |
| 455 compile->set_type_dict(NULL); | |
| 456 compile->set_type_hwm(NULL); | |
| 457 compile->set_type_last_size(0); | |
| 458 compile->set_last_tf(NULL, NULL); | |
| 459 compile->set_indexSet_arena(NULL); | |
| 460 compile->set_indexSet_free_block_list(NULL); | |
| 461 compile->init_type_arena(); | |
| 462 Type::Initialize(compile); | |
| 463 _compile->set_scratch_buffer_blob(NULL); | |
| 464 _compile->begin_method(); | |
| 465 } | |
| 466 CompileWrapper::~CompileWrapper() { | |
| 467 _compile->end_method(); | |
| 468 if (_compile->scratch_buffer_blob() != NULL) | |
| 469 BufferBlob::free(_compile->scratch_buffer_blob()); | |
| 470 _compile->env()->set_compiler_data(NULL); | |
| 471 } | |
| 472 | |
| 473 | |
| 474 //----------------------------print_compile_messages--------------------------- | |
| 475 void Compile::print_compile_messages() { | |
| 476 #ifndef PRODUCT | |
| 477 // Check if recompiling | |
| 478 if (_subsume_loads == false && PrintOpto) { | |
| 479 // Recompiling without allowing machine instructions to subsume loads | |
| 480 tty->print_cr("*********************************************************"); | |
| 481 tty->print_cr("** Bailout: Recompile without subsuming loads **"); | |
| 482 tty->print_cr("*********************************************************"); | |
| 483 } | |
|
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484 if (_do_escape_analysis != DoEscapeAnalysis && PrintOpto) { |
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485 // Recompiling without escape analysis |
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486 tty->print_cr("*********************************************************"); |
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487 tty->print_cr("** Bailout: Recompile without escape analysis **"); |
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488 tty->print_cr("*********************************************************"); |
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489 } |
| 10278 | 490 if (_eliminate_boxing != EliminateAutoBox && PrintOpto) { |
| 491 // Recompiling without boxing elimination | |
| 492 tty->print_cr("*********************************************************"); | |
| 493 tty->print_cr("** Bailout: Recompile without boxing elimination **"); | |
| 494 tty->print_cr("*********************************************************"); | |
| 495 } | |
| 0 | 496 if (env()->break_at_compile()) { |
| 605 | 497 // Open the debugger when compiling this method. |
| 0 | 498 tty->print("### Breaking when compiling: "); |
| 499 method()->print_short_name(); | |
| 500 tty->cr(); | |
| 501 BREAKPOINT; | |
| 502 } | |
| 503 | |
| 504 if( PrintOpto ) { | |
| 505 if (is_osr_compilation()) { | |
| 506 tty->print("[OSR]%3d", _compile_id); | |
| 507 } else { | |
| 508 tty->print("%3d", _compile_id); | |
| 509 } | |
| 510 } | |
| 511 #endif | |
| 512 } | |
| 513 | |
| 514 | |
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515 //-----------------------init_scratch_buffer_blob------------------------------ |
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516 // Construct a temporary BufferBlob and cache it for this compile. |
| 2008 | 517 void Compile::init_scratch_buffer_blob(int const_size) { |
|
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518 // If there is already a scratch buffer blob allocated and the |
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519 // constant section is big enough, use it. Otherwise free the |
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520 // current and allocate a new one. |
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521 BufferBlob* blob = scratch_buffer_blob(); |
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522 if ((blob != NULL) && (const_size <= _scratch_const_size)) { |
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523 // Use the current blob. |
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524 } else { |
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525 if (blob != NULL) { |
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526 BufferBlob::free(blob); |
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527 } |
| 0 | 528 |
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529 ResourceMark rm; |
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530 _scratch_const_size = const_size; |
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531 int size = (MAX_inst_size + MAX_stubs_size + _scratch_const_size); |
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532 blob = BufferBlob::create("Compile::scratch_buffer", size); |
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533 // Record the buffer blob for next time. |
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534 set_scratch_buffer_blob(blob); |
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535 // Have we run out of code space? |
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536 if (scratch_buffer_blob() == NULL) { |
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537 // Let CompilerBroker disable further compilations. |
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538 record_failure("Not enough space for scratch buffer in CodeCache"); |
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539 return; |
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540 } |
| 163 | 541 } |
| 0 | 542 |
| 543 // Initialize the relocation buffers | |
| 1748 | 544 relocInfo* locs_buf = (relocInfo*) blob->content_end() - MAX_locs_size; |
| 0 | 545 set_scratch_locs_memory(locs_buf); |
| 546 } | |
| 547 | |
| 548 | |
| 549 //-----------------------scratch_emit_size------------------------------------- | |
| 550 // Helper function that computes size by emitting code | |
| 551 uint Compile::scratch_emit_size(const Node* n) { | |
| 2008 | 552 // Start scratch_emit_size section. |
| 553 set_in_scratch_emit_size(true); | |
| 554 | |
| 0 | 555 // Emit into a trash buffer and count bytes emitted. |
| 556 // This is a pretty expensive way to compute a size, | |
| 557 // but it works well enough if seldom used. | |
| 558 // All common fixed-size instructions are given a size | |
| 559 // method by the AD file. | |
| 560 // Note that the scratch buffer blob and locs memory are | |
| 561 // allocated at the beginning of the compile task, and | |
| 562 // may be shared by several calls to scratch_emit_size. | |
| 563 // The allocation of the scratch buffer blob is particularly | |
| 564 // expensive, since it has to grab the code cache lock. | |
| 565 BufferBlob* blob = this->scratch_buffer_blob(); | |
| 566 assert(blob != NULL, "Initialize BufferBlob at start"); | |
| 567 assert(blob->size() > MAX_inst_size, "sanity"); | |
| 568 relocInfo* locs_buf = scratch_locs_memory(); | |
| 1748 | 569 address blob_begin = blob->content_begin(); |
| 0 | 570 address blob_end = (address)locs_buf; |
| 1748 | 571 assert(blob->content_contains(blob_end), "sanity"); |
| 0 | 572 CodeBuffer buf(blob_begin, blob_end - blob_begin); |
| 2008 | 573 buf.initialize_consts_size(_scratch_const_size); |
| 0 | 574 buf.initialize_stubs_size(MAX_stubs_size); |
| 575 assert(locs_buf != NULL, "sanity"); | |
| 2008 | 576 int lsize = MAX_locs_size / 3; |
| 577 buf.consts()->initialize_shared_locs(&locs_buf[lsize * 0], lsize); | |
| 578 buf.insts()->initialize_shared_locs( &locs_buf[lsize * 1], lsize); | |
| 579 buf.stubs()->initialize_shared_locs( &locs_buf[lsize * 2], lsize); | |
| 580 | |
| 581 // Do the emission. | |
| 3839 | 582 |
| 583 Label fakeL; // Fake label for branch instructions. | |
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584 Label* saveL = NULL; |
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585 uint save_bnum = 0; |
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586 bool is_branch = n->is_MachBranch(); |
| 3839 | 587 if (is_branch) { |
| 588 MacroAssembler masm(&buf); | |
| 589 masm.bind(fakeL); | |
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590 n->as_MachBranch()->save_label(&saveL, &save_bnum); |
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591 n->as_MachBranch()->label_set(&fakeL, 0); |
| 3839 | 592 } |
| 0 | 593 n->emit(buf, this->regalloc()); |
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594 if (is_branch) // Restore label. |
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595 n->as_MachBranch()->label_set(saveL, save_bnum); |
| 2008 | 596 |
| 597 // End scratch_emit_size section. | |
| 598 set_in_scratch_emit_size(false); | |
| 599 | |
| 1748 | 600 return buf.insts_size(); |
| 0 | 601 } |
| 602 | |
| 603 | |
| 604 // ============================================================================ | |
| 605 //------------------------------Compile standard------------------------------- | |
| 606 debug_only( int Compile::_debug_idx = 100000; ) | |
| 607 | |
| 608 // Compile a method. entry_bci is -1 for normal compilations and indicates | |
| 609 // the continuation bci for on stack replacement. | |
| 610 | |
| 611 | |
| 10278 | 612 Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr_bci, |
| 613 bool subsume_loads, bool do_escape_analysis, bool eliminate_boxing ) | |
| 0 | 614 : Phase(Compiler), |
| 615 _env(ci_env), | |
| 616 _log(ci_env->log()), | |
| 617 _compile_id(ci_env->compile_id()), | |
| 618 _save_argument_registers(false), | |
| 619 _stub_name(NULL), | |
| 620 _stub_function(NULL), | |
| 621 _stub_entry_point(NULL), | |
| 622 _method(target), | |
| 623 _entry_bci(osr_bci), | |
| 624 _initial_gvn(NULL), | |
| 625 _for_igvn(NULL), | |
| 626 _warm_calls(NULL), | |
| 627 _subsume_loads(subsume_loads), | |
|
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628 _do_escape_analysis(do_escape_analysis), |
| 10278 | 629 _eliminate_boxing(eliminate_boxing), |
| 0 | 630 _failure_reason(NULL), |
| 631 _code_buffer("Compile::Fill_buffer"), | |
| 632 _orig_pc_slot(0), | |
| 633 _orig_pc_slot_offset_in_bytes(0), | |
| 1265 | 634 _has_method_handle_invokes(false), |
| 2008 | 635 _mach_constant_base_node(NULL), |
| 0 | 636 _node_bundling_limit(0), |
| 637 _node_bundling_base(NULL), | |
|
859
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638 _java_calls(0), |
|
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639 _inner_loops(0), |
| 2008 | 640 _scratch_const_size(-1), |
| 641 _in_scratch_emit_size(false), | |
|
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642 _dead_node_list(comp_arena()), |
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643 _dead_node_count(0), |
| 0 | 644 #ifndef PRODUCT |
| 645 _trace_opto_output(TraceOptoOutput || method()->has_option("TraceOptoOutput")), | |
| 646 _printer(IdealGraphPrinter::printer()), | |
| 647 #endif | |
|
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|
648 _congraph(NULL), |
| 7473 | 649 _late_inlines(comp_arena(), 2, 0, NULL), |
| 650 _string_late_inlines(comp_arena(), 2, 0, NULL), | |
| 10278 | 651 _boxing_late_inlines(comp_arena(), 2, 0, NULL), |
| 7473 | 652 _late_inlines_pos(0), |
| 653 _number_of_mh_late_inlines(0), | |
| 654 _inlining_progress(false), | |
| 655 _inlining_incrementally(false), | |
|
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656 _print_inlining_list(NULL), |
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|
657 _print_inlining(0) { |
| 0 | 658 C = this; |
| 659 | |
| 660 CompileWrapper cw(this); | |
| 661 #ifndef PRODUCT | |
| 662 if (TimeCompiler2) { | |
| 663 tty->print(" "); | |
| 664 target->holder()->name()->print(); | |
| 665 tty->print("."); | |
| 666 target->print_short_name(); | |
| 667 tty->print(" "); | |
| 668 } | |
| 669 TraceTime t1("Total compilation time", &_t_totalCompilation, TimeCompiler, TimeCompiler2); | |
| 670 TraceTime t2(NULL, &_t_methodCompilation, TimeCompiler, false); | |
|
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671 bool print_opto_assembly = PrintOptoAssembly || _method->has_option("PrintOptoAssembly"); |
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672 if (!print_opto_assembly) { |
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|
673 bool print_assembly = (PrintAssembly || _method->should_print_assembly()); |
|
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|
674 if (print_assembly && !Disassembler::can_decode()) { |
|
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|
675 tty->print_cr("PrintAssembly request changed to PrintOptoAssembly"); |
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|
676 print_opto_assembly = true; |
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|
677 } |
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|
678 } |
|
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|
679 set_print_assembly(print_opto_assembly); |
|
367
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|
680 set_parsed_irreducible_loop(false); |
| 0 | 681 #endif |
| 682 | |
| 683 if (ProfileTraps) { | |
| 684 // Make sure the method being compiled gets its own MDO, | |
| 685 // so we can at least track the decompile_count(). | |
|
2007
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7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
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|
686 method()->ensure_method_data(); |
| 0 | 687 } |
| 688 | |
| 689 Init(::AliasLevel); | |
| 690 | |
| 691 | |
| 692 print_compile_messages(); | |
| 693 | |
| 694 if (UseOldInlining || PrintCompilation NOT_PRODUCT( || PrintOpto) ) | |
| 695 _ilt = InlineTree::build_inline_tree_root(); | |
| 696 else | |
| 697 _ilt = NULL; | |
| 698 | |
| 699 // Even if NO memory addresses are used, MergeMem nodes must have at least 1 slice | |
| 700 assert(num_alias_types() >= AliasIdxRaw, ""); | |
| 701 | |
| 702 #define MINIMUM_NODE_HASH 1023 | |
| 703 // Node list that Iterative GVN will start with | |
| 704 Unique_Node_List for_igvn(comp_arena()); | |
| 705 set_for_igvn(&for_igvn); | |
| 706 | |
| 707 // GVN that will be run immediately on new nodes | |
| 708 uint estimated_size = method()->code_size()*4+64; | |
| 709 estimated_size = (estimated_size < MINIMUM_NODE_HASH ? MINIMUM_NODE_HASH : estimated_size); | |
| 710 PhaseGVN gvn(node_arena(), estimated_size); | |
| 711 set_initial_gvn(&gvn); | |
| 712 | |
| 7605 | 713 if (PrintInlining || PrintIntrinsics NOT_PRODUCT( || PrintOptoInlining)) { |
|
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|
714 _print_inlining_list = new (comp_arena())GrowableArray<PrintInliningBuffer>(comp_arena(), 1, 1, PrintInliningBuffer()); |
|
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|
715 } |
| 0 | 716 { // Scope for timing the parser |
| 717 TracePhase t3("parse", &_t_parser, true); | |
| 718 | |
| 719 // Put top into the hash table ASAP. | |
| 720 initial_gvn()->transform_no_reclaim(top()); | |
| 721 | |
| 722 // Set up tf(), start(), and find a CallGenerator. | |
|
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
723 CallGenerator* cg = NULL; |
| 0 | 724 if (is_osr_compilation()) { |
| 725 const TypeTuple *domain = StartOSRNode::osr_domain(); | |
| 726 const TypeTuple *range = TypeTuple::make_range(method()->signature()); | |
| 727 init_tf(TypeFunc::make(domain, range)); | |
|
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
728 StartNode* s = new (this) StartOSRNode(root(), domain); |
| 0 | 729 initial_gvn()->set_type_bottom(s); |
| 730 init_start(s); | |
| 731 cg = CallGenerator::for_osr(method(), entry_bci()); | |
| 732 } else { | |
| 733 // Normal case. | |
| 734 init_tf(TypeFunc::make(method())); | |
|
6804
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|
735 StartNode* s = new (this) StartNode(root(), tf()->domain()); |
| 0 | 736 initial_gvn()->set_type_bottom(s); |
| 737 init_start(s); | |
|
3249
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|
738 if (method()->intrinsic_id() == vmIntrinsics::_Reference_get && UseG1GC) { |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
739 // With java.lang.ref.reference.get() we must go through the |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
740 // intrinsic when G1 is enabled - even when get() is the root |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
741 // method of the compile - so that, if necessary, the value in |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
742 // the referent field of the reference object gets recorded by |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
743 // the pre-barrier code. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
744 // Specifically, if G1 is enabled, the value in the referent |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
745 // field is recorded by the G1 SATB pre barrier. This will |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
746 // 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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changeset
|
747 // object removed from the list of discovered references during |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
748 // reference processing. |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
749 cg = find_intrinsic(method(), false); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
750 } |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
751 if (cg == NULL) { |
|
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changeset
|
752 float past_uses = method()->interpreter_invocation_count(); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
753 float expected_uses = past_uses; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
754 cg = CallGenerator::for_inline(method(), expected_uses); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
755 } |
| 0 | 756 } |
| 757 if (failing()) return; | |
| 758 if (cg == NULL) { | |
| 759 record_method_not_compilable_all_tiers("cannot parse method"); | |
| 760 return; | |
| 761 } | |
| 762 JVMState* jvms = build_start_state(start(), tf()); | |
| 763 if ((jvms = cg->generate(jvms)) == NULL) { | |
| 764 record_method_not_compilable("method parse failed"); | |
| 765 return; | |
| 766 } | |
| 767 GraphKit kit(jvms); | |
| 768 | |
| 769 if (!kit.stopped()) { | |
| 770 // Accept return values, and transfer control we know not where. | |
| 771 // This is done by a special, unique ReturnNode bound to root. | |
| 772 return_values(kit.jvms()); | |
| 773 } | |
| 774 | |
| 775 if (kit.has_exceptions()) { | |
| 776 // Any exceptions that escape from this call must be rethrown | |
| 777 // to whatever caller is dynamically above us on the stack. | |
| 778 // This is done by a special, unique RethrowNode bound to root. | |
| 779 rethrow_exceptions(kit.transfer_exceptions_into_jvms()); | |
| 780 } | |
| 781 | |
| 7473 | 782 assert(IncrementalInline || (_late_inlines.length() == 0 && !has_mh_late_inlines()), "incremental inlining is off"); |
| 783 | |
| 784 if (_late_inlines.length() == 0 && !has_mh_late_inlines() && !failing() && has_stringbuilder()) { | |
| 785 inline_string_calls(true); | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
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parents:
929
diff
changeset
|
786 } |
| 7473 | 787 |
| 788 if (failing()) return; | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
789 |
| 10405 | 790 print_method(PHASE_BEFORE_REMOVEUSELESS, 3); |
|
367
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6384206: Phis which are later unneeded are impairing our ability to inline based on static types
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|
791 |
| 0 | 792 // Remove clutter produced by parsing. |
| 793 if (!failing()) { | |
| 794 ResourceMark rm; | |
| 795 PhaseRemoveUseless pru(initial_gvn(), &for_igvn); | |
| 796 } | |
| 797 } | |
| 798 | |
| 799 // Note: Large methods are capped off in do_one_bytecode(). | |
| 800 if (failing()) return; | |
| 801 | |
| 802 // After parsing, node notes are no longer automagic. | |
| 803 // They must be propagated by register_new_node_with_optimizer(), | |
| 804 // clone(), or the like. | |
| 805 set_default_node_notes(NULL); | |
| 806 | |
| 807 for (;;) { | |
| 808 int successes = Inline_Warm(); | |
| 809 if (failing()) return; | |
| 810 if (successes == 0) break; | |
| 811 } | |
| 812 | |
| 813 // Drain the list. | |
| 814 Finish_Warm(); | |
| 815 #ifndef PRODUCT | |
| 816 if (_printer) { | |
| 817 _printer->print_inlining(this); | |
| 818 } | |
| 819 #endif | |
| 820 | |
| 821 if (failing()) return; | |
| 822 NOT_PRODUCT( verify_graph_edges(); ) | |
| 823 | |
| 824 // Now optimize | |
| 825 Optimize(); | |
| 826 if (failing()) return; | |
| 827 NOT_PRODUCT( verify_graph_edges(); ) | |
| 828 | |
| 829 #ifndef PRODUCT | |
| 830 if (PrintIdeal) { | |
| 831 ttyLocker ttyl; // keep the following output all in one block | |
| 832 // This output goes directly to the tty, not the compiler log. | |
| 833 // To enable tools to match it up with the compilation activity, | |
| 834 // be sure to tag this tty output with the compile ID. | |
| 835 if (xtty != NULL) { | |
| 836 xtty->head("ideal compile_id='%d'%s", compile_id(), | |
| 837 is_osr_compilation() ? " compile_kind='osr'" : | |
| 838 ""); | |
| 839 } | |
| 840 root()->dump(9999); | |
| 841 if (xtty != NULL) { | |
| 842 xtty->tail("ideal"); | |
| 843 } | |
| 844 } | |
| 845 #endif | |
| 846 | |
| 847 // Now that we know the size of all the monitors we can add a fixed slot | |
| 848 // for the original deopt pc. | |
| 849 | |
| 850 _orig_pc_slot = fixed_slots(); | |
| 851 int next_slot = _orig_pc_slot + (sizeof(address) / VMRegImpl::stack_slot_size); | |
| 852 set_fixed_slots(next_slot); | |
| 853 | |
| 854 // Now generate code | |
| 855 Code_Gen(); | |
| 856 if (failing()) return; | |
| 857 | |
| 858 // Check if we want to skip execution of all compiled code. | |
| 859 { | |
| 860 #ifndef PRODUCT | |
| 861 if (OptoNoExecute) { | |
| 862 record_method_not_compilable("+OptoNoExecute"); // Flag as failed | |
| 863 return; | |
| 864 } | |
| 865 TracePhase t2("install_code", &_t_registerMethod, TimeCompiler); | |
| 866 #endif | |
| 867 | |
| 868 if (is_osr_compilation()) { | |
| 869 _code_offsets.set_value(CodeOffsets::Verified_Entry, 0); | |
| 870 _code_offsets.set_value(CodeOffsets::OSR_Entry, _first_block_size); | |
| 871 } else { | |
| 872 _code_offsets.set_value(CodeOffsets::Verified_Entry, _first_block_size); | |
| 873 _code_offsets.set_value(CodeOffsets::OSR_Entry, 0); | |
| 874 } | |
| 875 | |
| 876 env()->register_method(_method, _entry_bci, | |
| 877 &_code_offsets, | |
| 878 _orig_pc_slot_offset_in_bytes, | |
| 879 code_buffer(), | |
| 880 frame_size_in_words(), _oop_map_set, | |
| 881 &_handler_table, &_inc_table, | |
| 882 compiler, | |
| 883 env()->comp_level(), | |
|
6792
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diff
changeset
|
884 has_unsafe_access(), |
|
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changeset
|
885 SharedRuntime::is_wide_vector(max_vector_size()) |
| 0 | 886 ); |
| 6843 | 887 |
| 888 if (log() != NULL) // Print code cache state into compiler log | |
| 889 log()->code_cache_state(); | |
| 0 | 890 } |
| 891 } | |
| 892 | |
| 893 //------------------------------Compile---------------------------------------- | |
| 894 // Compile a runtime stub | |
| 895 Compile::Compile( ciEnv* ci_env, | |
| 896 TypeFunc_generator generator, | |
| 897 address stub_function, | |
| 898 const char *stub_name, | |
| 899 int is_fancy_jump, | |
| 900 bool pass_tls, | |
| 901 bool save_arg_registers, | |
| 902 bool return_pc ) | |
| 903 : Phase(Compiler), | |
| 904 _env(ci_env), | |
| 905 _log(ci_env->log()), | |
|
8730
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8005772: Stubs report compile id -1 in phase events
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diff
changeset
|
906 _compile_id(0), |
| 0 | 907 _save_argument_registers(save_arg_registers), |
| 908 _method(NULL), | |
| 909 _stub_name(stub_name), | |
| 910 _stub_function(stub_function), | |
| 911 _stub_entry_point(NULL), | |
| 912 _entry_bci(InvocationEntryBci), | |
| 913 _initial_gvn(NULL), | |
| 914 _for_igvn(NULL), | |
| 915 _warm_calls(NULL), | |
| 916 _orig_pc_slot(0), | |
| 917 _orig_pc_slot_offset_in_bytes(0), | |
| 918 _subsume_loads(true), | |
|
38
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6667610: (Escape Analysis) retry compilation without EA if it fails
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diff
changeset
|
919 _do_escape_analysis(false), |
| 10278 | 920 _eliminate_boxing(false), |
| 0 | 921 _failure_reason(NULL), |
| 922 _code_buffer("Compile::Fill_buffer"), | |
| 1265 | 923 _has_method_handle_invokes(false), |
| 2008 | 924 _mach_constant_base_node(NULL), |
| 0 | 925 _node_bundling_limit(0), |
| 926 _node_bundling_base(NULL), | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
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856
diff
changeset
|
927 _java_calls(0), |
|
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6860599: nodes limit could be reached during Output phase
kvn
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856
diff
changeset
|
928 _inner_loops(0), |
| 0 | 929 #ifndef PRODUCT |
| 930 _trace_opto_output(TraceOptoOutput), | |
| 931 _printer(NULL), | |
| 932 #endif | |
|
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|
933 _dead_node_list(comp_arena()), |
|
2aff40cb4703
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|
934 _dead_node_count(0), |
|
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|
935 _congraph(NULL), |
| 7473 | 936 _number_of_mh_late_inlines(0), |
| 937 _inlining_progress(false), | |
| 938 _inlining_incrementally(false), | |
|
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|
939 _print_inlining_list(NULL), |
|
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|
940 _print_inlining(0) { |
| 0 | 941 C = this; |
| 942 | |
| 943 #ifndef PRODUCT | |
| 944 TraceTime t1(NULL, &_t_totalCompilation, TimeCompiler, false); | |
| 945 TraceTime t2(NULL, &_t_stubCompilation, TimeCompiler, false); | |
| 946 set_print_assembly(PrintFrameConverterAssembly); | |
|
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|
947 set_parsed_irreducible_loop(false); |
| 0 | 948 #endif |
| 949 CompileWrapper cw(this); | |
| 950 Init(/*AliasLevel=*/ 0); | |
| 951 init_tf((*generator)()); | |
| 952 | |
| 953 { | |
| 954 // The following is a dummy for the sake of GraphKit::gen_stub | |
| 955 Unique_Node_List for_igvn(comp_arena()); | |
| 956 set_for_igvn(&for_igvn); // not used, but some GraphKit guys push on this | |
| 957 PhaseGVN gvn(Thread::current()->resource_area(),255); | |
| 958 set_initial_gvn(&gvn); // not significant, but GraphKit guys use it pervasively | |
| 959 gvn.transform_no_reclaim(top()); | |
| 960 | |
| 961 GraphKit kit; | |
| 962 kit.gen_stub(stub_function, stub_name, is_fancy_jump, pass_tls, return_pc); | |
| 963 } | |
| 964 | |
| 965 NOT_PRODUCT( verify_graph_edges(); ) | |
| 966 Code_Gen(); | |
| 967 if (failing()) return; | |
| 968 | |
| 969 | |
| 970 // Entry point will be accessed using compile->stub_entry_point(); | |
| 971 if (code_buffer() == NULL) { | |
| 972 Matcher::soft_match_failure(); | |
| 973 } else { | |
| 974 if (PrintAssembly && (WizardMode || Verbose)) | |
| 975 tty->print_cr("### Stub::%s", stub_name); | |
| 976 | |
| 977 if (!failing()) { | |
| 978 assert(_fixed_slots == 0, "no fixed slots used for runtime stubs"); | |
| 979 | |
| 980 // Make the NMethod | |
| 981 // For now we mark the frame as never safe for profile stackwalking | |
| 982 RuntimeStub *rs = RuntimeStub::new_runtime_stub(stub_name, | |
| 983 code_buffer(), | |
| 984 CodeOffsets::frame_never_safe, | |
| 985 // _code_offsets.value(CodeOffsets::Frame_Complete), | |
| 986 frame_size_in_words(), | |
| 987 _oop_map_set, | |
| 988 save_arg_registers); | |
| 989 assert(rs != NULL && rs->is_runtime_stub(), "sanity check"); | |
| 990 | |
| 991 _stub_entry_point = rs->entry_point(); | |
| 992 } | |
| 993 } | |
| 994 } | |
| 995 | |
| 996 //------------------------------Init------------------------------------------- | |
| 997 // Prepare for a single compilation | |
| 998 void Compile::Init(int aliaslevel) { | |
| 999 _unique = 0; | |
| 1000 _regalloc = NULL; | |
| 1001 | |
| 1002 _tf = NULL; // filled in later | |
| 1003 _top = NULL; // cached later | |
| 1004 _matcher = NULL; // filled in later | |
| 1005 _cfg = NULL; // filled in later | |
| 1006 | |
| 1007 set_24_bit_selection_and_mode(Use24BitFP, false); | |
| 1008 | |
| 1009 _node_note_array = NULL; | |
| 1010 _default_node_notes = NULL; | |
| 1011 | |
| 1012 _immutable_memory = NULL; // filled in at first inquiry | |
| 1013 | |
| 1014 // Globally visible Nodes | |
| 1015 // First set TOP to NULL to give safe behavior during creation of RootNode | |
| 1016 set_cached_top_node(NULL); | |
|
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1017 set_root(new (this) RootNode()); |
| 0 | 1018 // Now that you have a Root to point to, create the real TOP |
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1019 set_cached_top_node( new (this) ConNode(Type::TOP) ); |
| 0 | 1020 set_recent_alloc(NULL, NULL); |
| 1021 | |
| 1022 // Create Debug Information Recorder to record scopes, oopmaps, etc. | |
|
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1023 env()->set_oop_recorder(new OopRecorder(env()->arena())); |
| 0 | 1024 env()->set_debug_info(new DebugInformationRecorder(env()->oop_recorder())); |
| 1025 env()->set_dependencies(new Dependencies(env())); | |
| 1026 | |
| 1027 _fixed_slots = 0; | |
| 1028 set_has_split_ifs(false); | |
| 1029 set_has_loops(has_method() && method()->has_loops()); // first approximation | |
|
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1030 set_has_stringbuilder(false); |
| 10278 | 1031 set_has_boxed_value(false); |
| 0 | 1032 _trap_can_recompile = false; // no traps emitted yet |
| 1033 _major_progress = true; // start out assuming good things will happen | |
| 1034 set_has_unsafe_access(false); | |
|
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1035 set_max_vector_size(0); |
| 0 | 1036 Copy::zero_to_bytes(_trap_hist, sizeof(_trap_hist)); |
| 1037 set_decompile_count(0); | |
| 1038 | |
| 418 | 1039 set_do_freq_based_layout(BlockLayoutByFrequency || method_has_option("BlockLayoutByFrequency")); |
| 1783 | 1040 set_num_loop_opts(LoopOptsCount); |
| 1041 set_do_inlining(Inline); | |
| 1042 set_max_inline_size(MaxInlineSize); | |
| 1043 set_freq_inline_size(FreqInlineSize); | |
| 1044 set_do_scheduling(OptoScheduling); | |
| 1045 set_do_count_invocations(false); | |
| 1046 set_do_method_data_update(false); | |
| 0 | 1047 |
| 1048 if (debug_info()->recording_non_safepoints()) { | |
| 1049 set_node_note_array(new(comp_arena()) GrowableArray<Node_Notes*> | |
| 1050 (comp_arena(), 8, 0, NULL)); | |
| 1051 set_default_node_notes(Node_Notes::make(this)); | |
| 1052 } | |
| 1053 | |
| 1054 // // -- Initialize types before each compile -- | |
| 1055 // // Update cached type information | |
| 1056 // if( _method && _method->constants() ) | |
| 1057 // Type::update_loaded_types(_method, _method->constants()); | |
| 1058 | |
| 1059 // Init alias_type map. | |
|
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1060 if (!_do_escape_analysis && aliaslevel == 3) |
| 0 | 1061 aliaslevel = 2; // No unique types without escape analysis |
| 1062 _AliasLevel = aliaslevel; | |
| 1063 const int grow_ats = 16; | |
| 1064 _max_alias_types = grow_ats; | |
| 1065 _alias_types = NEW_ARENA_ARRAY(comp_arena(), AliasType*, grow_ats); | |
| 1066 AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, grow_ats); | |
| 1067 Copy::zero_to_bytes(ats, sizeof(AliasType)*grow_ats); | |
| 1068 { | |
| 1069 for (int i = 0; i < grow_ats; i++) _alias_types[i] = &ats[i]; | |
| 1070 } | |
| 1071 // Initialize the first few types. | |
| 1072 _alias_types[AliasIdxTop]->Init(AliasIdxTop, NULL); | |
| 1073 _alias_types[AliasIdxBot]->Init(AliasIdxBot, TypePtr::BOTTOM); | |
| 1074 _alias_types[AliasIdxRaw]->Init(AliasIdxRaw, TypeRawPtr::BOTTOM); | |
| 1075 _num_alias_types = AliasIdxRaw+1; | |
| 1076 // Zero out the alias type cache. | |
| 1077 Copy::zero_to_bytes(_alias_cache, sizeof(_alias_cache)); | |
| 1078 // A NULL adr_type hits in the cache right away. Preload the right answer. | |
| 1079 probe_alias_cache(NULL)->_index = AliasIdxTop; | |
| 1080 | |
| 1081 _intrinsics = NULL; | |
| 1685 | 1082 _macro_nodes = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); |
| 1083 _predicate_opaqs = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); | |
|
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|
1084 _expensive_nodes = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8, 0, NULL); |
| 0 | 1085 register_library_intrinsics(); |
| 1086 } | |
| 1087 | |
| 1088 //---------------------------init_start---------------------------------------- | |
| 1089 // Install the StartNode on this compile object. | |
| 1090 void Compile::init_start(StartNode* s) { | |
| 1091 if (failing()) | |
| 1092 return; // already failing | |
| 1093 assert(s == start(), ""); | |
| 1094 } | |
| 1095 | |
| 1096 StartNode* Compile::start() const { | |
| 1097 assert(!failing(), ""); | |
| 1098 for (DUIterator_Fast imax, i = root()->fast_outs(imax); i < imax; i++) { | |
| 1099 Node* start = root()->fast_out(i); | |
| 1100 if( start->is_Start() ) | |
| 1101 return start->as_Start(); | |
| 1102 } | |
| 1103 ShouldNotReachHere(); | |
| 1104 return NULL; | |
| 1105 } | |
| 1106 | |
| 1107 //-------------------------------immutable_memory------------------------------------- | |
| 1108 // Access immutable memory | |
| 1109 Node* Compile::immutable_memory() { | |
| 1110 if (_immutable_memory != NULL) { | |
| 1111 return _immutable_memory; | |
| 1112 } | |
| 1113 StartNode* s = start(); | |
| 1114 for (DUIterator_Fast imax, i = s->fast_outs(imax); true; i++) { | |
| 1115 Node *p = s->fast_out(i); | |
| 1116 if (p != s && p->as_Proj()->_con == TypeFunc::Memory) { | |
| 1117 _immutable_memory = p; | |
| 1118 return _immutable_memory; | |
| 1119 } | |
| 1120 } | |
| 1121 ShouldNotReachHere(); | |
| 1122 return NULL; | |
| 1123 } | |
| 1124 | |
| 1125 //----------------------set_cached_top_node------------------------------------ | |
| 1126 // Install the cached top node, and make sure Node::is_top works correctly. | |
| 1127 void Compile::set_cached_top_node(Node* tn) { | |
| 1128 if (tn != NULL) verify_top(tn); | |
| 1129 Node* old_top = _top; | |
| 1130 _top = tn; | |
| 1131 // Calling Node::setup_is_top allows the nodes the chance to adjust | |
| 1132 // their _out arrays. | |
| 1133 if (_top != NULL) _top->setup_is_top(); | |
| 1134 if (old_top != NULL) old_top->setup_is_top(); | |
| 1135 assert(_top == NULL || top()->is_top(), ""); | |
| 1136 } | |
| 1137 | |
|
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1138 #ifdef ASSERT |
|
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1139 uint Compile::count_live_nodes_by_graph_walk() { |
|
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1140 Unique_Node_List useful(comp_arena()); |
|
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1141 // Get useful node list by walking the graph. |
|
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1142 identify_useful_nodes(useful); |
|
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1143 return useful.size(); |
|
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1144 } |
|
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1145 |
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1146 void Compile::print_missing_nodes() { |
|
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1147 |
|
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1148 // Return if CompileLog is NULL and PrintIdealNodeCount is false. |
|
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1149 if ((_log == NULL) && (! PrintIdealNodeCount)) { |
|
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1150 return; |
|
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|
1151 } |
|
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1152 |
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1153 // This is an expensive function. It is executed only when the user |
|
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1154 // specifies VerifyIdealNodeCount option or otherwise knows the |
|
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|
1155 // additional work that needs to be done to identify reachable nodes |
|
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1156 // by walking the flow graph and find the missing ones using |
|
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|
1157 // _dead_node_list. |
|
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1158 |
|
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1159 Unique_Node_List useful(comp_arena()); |
|
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1160 // Get useful node list by walking the graph. |
|
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1161 identify_useful_nodes(useful); |
|
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1162 |
|
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1163 uint l_nodes = C->live_nodes(); |
|
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1164 uint l_nodes_by_walk = useful.size(); |
|
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1165 |
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1166 if (l_nodes != l_nodes_by_walk) { |
|
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1167 if (_log != NULL) { |
|
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1168 _log->begin_head("mismatched_nodes count='%d'", abs((int) (l_nodes - l_nodes_by_walk))); |
|
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1169 _log->stamp(); |
|
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1170 _log->end_head(); |
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1171 } |
|
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1172 VectorSet& useful_member_set = useful.member_set(); |
|
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1173 int last_idx = l_nodes_by_walk; |
|
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1174 for (int i = 0; i < last_idx; i++) { |
|
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1175 if (useful_member_set.test(i)) { |
|
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1176 if (_dead_node_list.test(i)) { |
|
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1177 if (_log != NULL) { |
|
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1178 _log->elem("mismatched_node_info node_idx='%d' type='both live and dead'", i); |
|
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1179 } |
|
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1180 if (PrintIdealNodeCount) { |
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1181 // Print the log message to tty |
|
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1182 tty->print_cr("mismatched_node idx='%d' both live and dead'", i); |
|
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1183 useful.at(i)->dump(); |
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1184 } |
|
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1185 } |
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1186 } |
|
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1187 else if (! _dead_node_list.test(i)) { |
|
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1188 if (_log != NULL) { |
|
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1189 _log->elem("mismatched_node_info node_idx='%d' type='neither live nor dead'", i); |
|
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1190 } |
|
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1191 if (PrintIdealNodeCount) { |
|
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1192 // Print the log message to tty |
|
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1193 tty->print_cr("mismatched_node idx='%d' type='neither live nor dead'", i); |
|
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1194 } |
|
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1195 } |
|
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1196 } |
|
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1197 if (_log != NULL) { |
|
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1198 _log->tail("mismatched_nodes"); |
|
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1199 } |
|
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|
1200 } |
|
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1201 } |
|
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1202 #endif |
|
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|
1203 |
| 0 | 1204 #ifndef PRODUCT |
| 1205 void Compile::verify_top(Node* tn) const { | |
| 1206 if (tn != NULL) { | |
| 1207 assert(tn->is_Con(), "top node must be a constant"); | |
| 1208 assert(((ConNode*)tn)->type() == Type::TOP, "top node must have correct type"); | |
| 1209 assert(tn->in(0) != NULL, "must have live top node"); | |
| 1210 } | |
| 1211 } | |
| 1212 #endif | |
| 1213 | |
| 1214 | |
| 1215 ///-------------------Managing Per-Node Debug & Profile Info------------------- | |
| 1216 | |
| 1217 void Compile::grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by) { | |
| 1218 guarantee(arr != NULL, ""); | |
| 1219 int num_blocks = arr->length(); | |
| 1220 if (grow_by < num_blocks) grow_by = num_blocks; | |
| 1221 int num_notes = grow_by * _node_notes_block_size; | |
| 1222 Node_Notes* notes = NEW_ARENA_ARRAY(node_arena(), Node_Notes, num_notes); | |
| 1223 Copy::zero_to_bytes(notes, num_notes * sizeof(Node_Notes)); | |
| 1224 while (num_notes > 0) { | |
| 1225 arr->append(notes); | |
| 1226 notes += _node_notes_block_size; | |
| 1227 num_notes -= _node_notes_block_size; | |
| 1228 } | |
| 1229 assert(num_notes == 0, "exact multiple, please"); | |
| 1230 } | |
| 1231 | |
| 1232 bool Compile::copy_node_notes_to(Node* dest, Node* source) { | |
| 1233 if (source == NULL || dest == NULL) return false; | |
| 1234 | |
| 1235 if (dest->is_Con()) | |
| 1236 return false; // Do not push debug info onto constants. | |
| 1237 | |
| 1238 #ifdef ASSERT | |
| 1239 // Leave a bread crumb trail pointing to the original node: | |
| 1240 if (dest != NULL && dest != source && dest->debug_orig() == NULL) { | |
| 1241 dest->set_debug_orig(source); | |
| 1242 } | |
| 1243 #endif | |
| 1244 | |
| 1245 if (node_note_array() == NULL) | |
| 1246 return false; // Not collecting any notes now. | |
| 1247 | |
| 1248 // This is a copy onto a pre-existing node, which may already have notes. | |
| 1249 // If both nodes have notes, do not overwrite any pre-existing notes. | |
| 1250 Node_Notes* source_notes = node_notes_at(source->_idx); | |
| 1251 if (source_notes == NULL || source_notes->is_clear()) return false; | |
| 1252 Node_Notes* dest_notes = node_notes_at(dest->_idx); | |
| 1253 if (dest_notes == NULL || dest_notes->is_clear()) { | |
| 1254 return set_node_notes_at(dest->_idx, source_notes); | |
| 1255 } | |
| 1256 | |
| 1257 Node_Notes merged_notes = (*source_notes); | |
| 1258 // The order of operations here ensures that dest notes will win... | |
| 1259 merged_notes.update_from(dest_notes); | |
| 1260 return set_node_notes_at(dest->_idx, &merged_notes); | |
| 1261 } | |
| 1262 | |
| 1263 | |
| 1264 //--------------------------allow_range_check_smearing------------------------- | |
| 1265 // Gating condition for coalescing similar range checks. | |
| 1266 // Sometimes we try 'speculatively' replacing a series of a range checks by a | |
| 1267 // single covering check that is at least as strong as any of them. | |
| 1268 // If the optimization succeeds, the simplified (strengthened) range check | |
| 1269 // will always succeed. If it fails, we will deopt, and then give up | |
| 1270 // on the optimization. | |
| 1271 bool Compile::allow_range_check_smearing() const { | |
| 1272 // If this method has already thrown a range-check, | |
| 1273 // assume it was because we already tried range smearing | |
| 1274 // and it failed. | |
| 1275 uint already_trapped = trap_count(Deoptimization::Reason_range_check); | |
| 1276 return !already_trapped; | |
| 1277 } | |
| 1278 | |
| 1279 | |
| 1280 //------------------------------flatten_alias_type----------------------------- | |
| 1281 const TypePtr *Compile::flatten_alias_type( const TypePtr *tj ) const { | |
| 1282 int offset = tj->offset(); | |
| 1283 TypePtr::PTR ptr = tj->ptr(); | |
| 1284 | |
| 247 | 1285 // Known instance (scalarizable allocation) alias only with itself. |
| 1286 bool is_known_inst = tj->isa_oopptr() != NULL && | |
| 1287 tj->is_oopptr()->is_known_instance(); | |
| 1288 | |
| 0 | 1289 // Process weird unsafe references. |
| 1290 if (offset == Type::OffsetBot && (tj->isa_instptr() /*|| tj->isa_klassptr()*/)) { | |
| 1291 assert(InlineUnsafeOps, "indeterminate pointers come only from unsafe ops"); | |
| 247 | 1292 assert(!is_known_inst, "scalarizable allocation should not have unsafe references"); |
| 0 | 1293 tj = TypeOopPtr::BOTTOM; |
| 1294 ptr = tj->ptr(); | |
| 1295 offset = tj->offset(); | |
| 1296 } | |
| 1297 | |
| 1298 // Array pointers need some flattening | |
| 1299 const TypeAryPtr *ta = tj->isa_aryptr(); | |
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1300 if (ta && ta->is_stable()) { |
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1301 // Erase stability property for alias analysis. |
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1302 tj = ta = ta->cast_to_stable(false); |
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1303 } |
| 247 | 1304 if( ta && is_known_inst ) { |
| 1305 if ( offset != Type::OffsetBot && | |
| 1306 offset > arrayOopDesc::length_offset_in_bytes() ) { | |
| 1307 offset = Type::OffsetBot; // Flatten constant access into array body only | |
| 1308 tj = ta = TypeAryPtr::make(ptr, ta->ary(), ta->klass(), true, offset, ta->instance_id()); | |
| 1309 } | |
| 1310 } else if( ta && _AliasLevel >= 2 ) { | |
| 0 | 1311 // For arrays indexed by constant indices, we flatten the alias |
| 1312 // space to include all of the array body. Only the header, klass | |
| 1313 // and array length can be accessed un-aliased. | |
| 1314 if( offset != Type::OffsetBot ) { | |
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1315 if( ta->const_oop() ) { // MethodData* or Method* |
| 0 | 1316 offset = Type::OffsetBot; // Flatten constant access into array body |
| 247 | 1317 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),ta->ary(),ta->klass(),false,offset); |
| 0 | 1318 } else if( offset == arrayOopDesc::length_offset_in_bytes() ) { |
| 1319 // range is OK as-is. | |
| 1320 tj = ta = TypeAryPtr::RANGE; | |
| 1321 } else if( offset == oopDesc::klass_offset_in_bytes() ) { | |
| 1322 tj = TypeInstPtr::KLASS; // all klass loads look alike | |
| 1323 ta = TypeAryPtr::RANGE; // generic ignored junk | |
| 1324 ptr = TypePtr::BotPTR; | |
| 1325 } else if( offset == oopDesc::mark_offset_in_bytes() ) { | |
| 1326 tj = TypeInstPtr::MARK; | |
| 1327 ta = TypeAryPtr::RANGE; // generic ignored junk | |
| 1328 ptr = TypePtr::BotPTR; | |
| 1329 } else { // Random constant offset into array body | |
| 1330 offset = Type::OffsetBot; // Flatten constant access into array body | |
| 247 | 1331 tj = ta = TypeAryPtr::make(ptr,ta->ary(),ta->klass(),false,offset); |
| 0 | 1332 } |
| 1333 } | |
| 1334 // Arrays of fixed size alias with arrays of unknown size. | |
| 1335 if (ta->size() != TypeInt::POS) { | |
| 1336 const TypeAry *tary = TypeAry::make(ta->elem(), TypeInt::POS); | |
| 247 | 1337 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,ta->klass(),false,offset); |
| 0 | 1338 } |
| 1339 // Arrays of known objects become arrays of unknown objects. | |
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1340 if (ta->elem()->isa_narrowoop() && ta->elem() != TypeNarrowOop::BOTTOM) { |
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1341 const TypeAry *tary = TypeAry::make(TypeNarrowOop::BOTTOM, ta->size()); |
| 247 | 1342 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL,false,offset); |
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1343 } |
| 0 | 1344 if (ta->elem()->isa_oopptr() && ta->elem() != TypeInstPtr::BOTTOM) { |
| 1345 const TypeAry *tary = TypeAry::make(TypeInstPtr::BOTTOM, ta->size()); | |
| 247 | 1346 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL,false,offset); |
| 0 | 1347 } |
| 1348 // Arrays of bytes and of booleans both use 'bastore' and 'baload' so | |
| 1349 // cannot be distinguished by bytecode alone. | |
| 1350 if (ta->elem() == TypeInt::BOOL) { | |
| 1351 const TypeAry *tary = TypeAry::make(TypeInt::BYTE, ta->size()); | |
| 1352 ciKlass* aklass = ciTypeArrayKlass::make(T_BYTE); | |
| 247 | 1353 tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,aklass,false,offset); |
| 0 | 1354 } |
| 1355 // During the 2nd round of IterGVN, NotNull castings are removed. | |
| 1356 // Make sure the Bottom and NotNull variants alias the same. | |
| 1357 // Also, make sure exact and non-exact variants alias the same. | |
| 1358 if( ptr == TypePtr::NotNull || ta->klass_is_exact() ) { | |
| 3789 | 1359 tj = ta = TypeAryPtr::make(TypePtr::BotPTR,ta->ary(),ta->klass(),false,offset); |
| 0 | 1360 } |
| 1361 } | |
| 1362 | |
| 1363 // Oop pointers need some flattening | |
| 1364 const TypeInstPtr *to = tj->isa_instptr(); | |
| 1365 if( to && _AliasLevel >= 2 && to != TypeOopPtr::BOTTOM ) { | |
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1366 ciInstanceKlass *k = to->klass()->as_instance_klass(); |
| 0 | 1367 if( ptr == TypePtr::Constant ) { |
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1368 if (to->klass() != ciEnv::current()->Class_klass() || |
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1369 offset < k->size_helper() * wordSize) { |
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1370 // No constant oop pointers (such as Strings); they alias with |
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1371 // unknown strings. |
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1372 assert(!is_known_inst, "not scalarizable allocation"); |
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1373 tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
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1374 } |
| 247 | 1375 } else if( is_known_inst ) { |
| 163 | 1376 tj = to; // Keep NotNull and klass_is_exact for instance type |
| 0 | 1377 } else if( ptr == TypePtr::NotNull || to->klass_is_exact() ) { |
| 1378 // During the 2nd round of IterGVN, NotNull castings are removed. | |
| 1379 // Make sure the Bottom and NotNull variants alias the same. | |
| 1380 // Also, make sure exact and non-exact variants alias the same. | |
| 247 | 1381 tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
| 0 | 1382 } |
| 1383 // Canonicalize the holder of this field | |
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1384 if (offset >= 0 && offset < instanceOopDesc::base_offset_in_bytes()) { |
| 0 | 1385 // First handle header references such as a LoadKlassNode, even if the |
| 1386 // object's klass is unloaded at compile time (4965979). | |
| 247 | 1387 if (!is_known_inst) { // Do it only for non-instance types |
| 1388 tj = to = TypeInstPtr::make(TypePtr::BotPTR, env()->Object_klass(), false, NULL, offset); | |
| 1389 } | |
| 0 | 1390 } else if (offset < 0 || offset >= k->size_helper() * wordSize) { |
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1391 // Static fields are in the space above the normal instance |
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1392 // fields in the java.lang.Class instance. |
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1393 if (to->klass() != ciEnv::current()->Class_klass()) { |
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1394 to = NULL; |
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1395 tj = TypeOopPtr::BOTTOM; |
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1396 offset = tj->offset(); |
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1397 } |
| 0 | 1398 } else { |
| 1399 ciInstanceKlass *canonical_holder = k->get_canonical_holder(offset); | |
| 1400 if (!k->equals(canonical_holder) || tj->offset() != offset) { | |
| 247 | 1401 if( is_known_inst ) { |
| 1402 tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, true, NULL, offset, to->instance_id()); | |
| 1403 } else { | |
| 1404 tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, false, NULL, offset); | |
| 1405 } | |
| 0 | 1406 } |
| 1407 } | |
| 1408 } | |
| 1409 | |
| 1410 // Klass pointers to object array klasses need some flattening | |
| 1411 const TypeKlassPtr *tk = tj->isa_klassptr(); | |
| 1412 if( tk ) { | |
| 1413 // If we are referencing a field within a Klass, we need | |
| 1414 // to assume the worst case of an Object. Both exact and | |
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1415 // inexact types must flatten to the same alias class so |
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1416 // use NotNull as the PTR. |
| 0 | 1417 if ( offset == Type::OffsetBot || (offset >= 0 && (size_t)offset < sizeof(Klass)) ) { |
| 1418 | |
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1419 tj = tk = TypeKlassPtr::make(TypePtr::NotNull, |
| 0 | 1420 TypeKlassPtr::OBJECT->klass(), |
| 1421 offset); | |
| 1422 } | |
| 1423 | |
| 1424 ciKlass* klass = tk->klass(); | |
| 1425 if( klass->is_obj_array_klass() ) { | |
| 1426 ciKlass* k = TypeAryPtr::OOPS->klass(); | |
| 1427 if( !k || !k->is_loaded() ) // Only fails for some -Xcomp runs | |
| 1428 k = TypeInstPtr::BOTTOM->klass(); | |
| 1429 tj = tk = TypeKlassPtr::make( TypePtr::NotNull, k, offset ); | |
| 1430 } | |
| 1431 | |
| 1432 // Check for precise loads from the primary supertype array and force them | |
| 1433 // to the supertype cache alias index. Check for generic array loads from | |
| 1434 // the primary supertype array and also force them to the supertype cache | |
| 1435 // alias index. Since the same load can reach both, we need to merge | |
| 1436 // these 2 disparate memories into the same alias class. Since the | |
| 1437 // primary supertype array is read-only, there's no chance of confusion | |
| 1438 // where we bypass an array load and an array store. | |
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1439 int primary_supers_offset = in_bytes(Klass::primary_supers_offset()); |
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1440 if (offset == Type::OffsetBot || |
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1441 (offset >= primary_supers_offset && |
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1442 offset < (int)(primary_supers_offset + Klass::primary_super_limit() * wordSize)) || |
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1443 offset == (int)in_bytes(Klass::secondary_super_cache_offset())) { |
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1444 offset = in_bytes(Klass::secondary_super_cache_offset()); |
| 0 | 1445 tj = tk = TypeKlassPtr::make( TypePtr::NotNull, tk->klass(), offset ); |
| 1446 } | |
| 1447 } | |
| 1448 | |
| 1449 // Flatten all Raw pointers together. | |
| 1450 if (tj->base() == Type::RawPtr) | |
| 1451 tj = TypeRawPtr::BOTTOM; | |
| 1452 | |
| 1453 if (tj->base() == Type::AnyPtr) | |
| 1454 tj = TypePtr::BOTTOM; // An error, which the caller must check for. | |
| 1455 | |
| 1456 // Flatten all to bottom for now | |
| 1457 switch( _AliasLevel ) { | |
| 1458 case 0: | |
| 1459 tj = TypePtr::BOTTOM; | |
| 1460 break; | |
| 1461 case 1: // Flatten to: oop, static, field or array | |
| 1462 switch (tj->base()) { | |
| 1463 //case Type::AryPtr: tj = TypeAryPtr::RANGE; break; | |
| 1464 case Type::RawPtr: tj = TypeRawPtr::BOTTOM; break; | |
| 1465 case Type::AryPtr: // do not distinguish arrays at all | |
| 1466 case Type::InstPtr: tj = TypeInstPtr::BOTTOM; break; | |
| 1467 case Type::KlassPtr: tj = TypeKlassPtr::OBJECT; break; | |
| 1468 case Type::AnyPtr: tj = TypePtr::BOTTOM; break; // caller checks it | |
| 1469 default: ShouldNotReachHere(); | |
| 1470 } | |
| 1471 break; | |
| 605 | 1472 case 2: // No collapsing at level 2; keep all splits |
| 1473 case 3: // No collapsing at level 3; keep all splits | |
| 0 | 1474 break; |
| 1475 default: | |
| 1476 Unimplemented(); | |
| 1477 } | |
| 1478 | |
| 1479 offset = tj->offset(); | |
| 1480 assert( offset != Type::OffsetTop, "Offset has fallen from constant" ); | |
| 1481 | |
| 1482 assert( (offset != Type::OffsetBot && tj->base() != Type::AryPtr) || | |
| 1483 (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || | |
| 1484 (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || | |
| 1485 (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || | |
| 1486 (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || | |
| 1487 (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || | |
| 1488 (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr) , | |
| 1489 "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); | |
| 1490 assert( tj->ptr() != TypePtr::TopPTR && | |
| 1491 tj->ptr() != TypePtr::AnyNull && | |
| 1492 tj->ptr() != TypePtr::Null, "No imprecise addresses" ); | |
| 1493 // assert( tj->ptr() != TypePtr::Constant || | |
| 1494 // tj->base() == Type::RawPtr || | |
| 1495 // tj->base() == Type::KlassPtr, "No constant oop addresses" ); | |
| 1496 | |
| 1497 return tj; | |
| 1498 } | |
| 1499 | |
| 1500 void Compile::AliasType::Init(int i, const TypePtr* at) { | |
| 1501 _index = i; | |
| 1502 _adr_type = at; | |
| 1503 _field = NULL; | |
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1504 _element = NULL; |
| 0 | 1505 _is_rewritable = true; // default |
| 1506 const TypeOopPtr *atoop = (at != NULL) ? at->isa_oopptr() : NULL; | |
| 223 | 1507 if (atoop != NULL && atoop->is_known_instance()) { |
| 1508 const TypeOopPtr *gt = atoop->cast_to_instance_id(TypeOopPtr::InstanceBot); | |
| 0 | 1509 _general_index = Compile::current()->get_alias_index(gt); |
| 1510 } else { | |
| 1511 _general_index = 0; | |
| 1512 } | |
| 1513 } | |
| 1514 | |
| 1515 //---------------------------------print_on------------------------------------ | |
| 1516 #ifndef PRODUCT | |
| 1517 void Compile::AliasType::print_on(outputStream* st) { | |
| 1518 if (index() < 10) | |
| 1519 st->print("@ <%d> ", index()); | |
| 1520 else st->print("@ <%d>", index()); | |
| 1521 st->print(is_rewritable() ? " " : " RO"); | |
| 1522 int offset = adr_type()->offset(); | |
| 1523 if (offset == Type::OffsetBot) | |
| 1524 st->print(" +any"); | |
| 1525 else st->print(" +%-3d", offset); | |
| 1526 st->print(" in "); | |
| 1527 adr_type()->dump_on(st); | |
| 1528 const TypeOopPtr* tjp = adr_type()->isa_oopptr(); | |
| 1529 if (field() != NULL && tjp) { | |
| 1530 if (tjp->klass() != field()->holder() || | |
| 1531 tjp->offset() != field()->offset_in_bytes()) { | |
| 1532 st->print(" != "); | |
| 1533 field()->print(); | |
| 1534 st->print(" ***"); | |
| 1535 } | |
| 1536 } | |
| 1537 } | |
| 1538 | |
| 1539 void print_alias_types() { | |
| 1540 Compile* C = Compile::current(); | |
| 1541 tty->print_cr("--- Alias types, AliasIdxBot .. %d", C->num_alias_types()-1); | |
| 1542 for (int idx = Compile::AliasIdxBot; idx < C->num_alias_types(); idx++) { | |
| 1543 C->alias_type(idx)->print_on(tty); | |
| 1544 tty->cr(); | |
| 1545 } | |
| 1546 } | |
| 1547 #endif | |
| 1548 | |
| 1549 | |
| 1550 //----------------------------probe_alias_cache-------------------------------- | |
| 1551 Compile::AliasCacheEntry* Compile::probe_alias_cache(const TypePtr* adr_type) { | |
| 1552 intptr_t key = (intptr_t) adr_type; | |
| 1553 key ^= key >> logAliasCacheSize; | |
| 1554 return &_alias_cache[key & right_n_bits(logAliasCacheSize)]; | |
| 1555 } | |
| 1556 | |
| 1557 | |
| 1558 //-----------------------------grow_alias_types-------------------------------- | |
| 1559 void Compile::grow_alias_types() { | |
| 1560 const int old_ats = _max_alias_types; // how many before? | |
| 1561 const int new_ats = old_ats; // how many more? | |
| 1562 const int grow_ats = old_ats+new_ats; // how many now? | |
| 1563 _max_alias_types = grow_ats; | |
| 1564 _alias_types = REALLOC_ARENA_ARRAY(comp_arena(), AliasType*, _alias_types, old_ats, grow_ats); | |
| 1565 AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, new_ats); | |
| 1566 Copy::zero_to_bytes(ats, sizeof(AliasType)*new_ats); | |
| 1567 for (int i = 0; i < new_ats; i++) _alias_types[old_ats+i] = &ats[i]; | |
| 1568 } | |
| 1569 | |
| 1570 | |
| 1571 //--------------------------------find_alias_type------------------------------ | |
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1572 Compile::AliasType* Compile::find_alias_type(const TypePtr* adr_type, bool no_create, ciField* original_field) { |
| 0 | 1573 if (_AliasLevel == 0) |
| 1574 return alias_type(AliasIdxBot); | |
| 1575 | |
| 1576 AliasCacheEntry* ace = probe_alias_cache(adr_type); | |
| 1577 if (ace->_adr_type == adr_type) { | |
| 1578 return alias_type(ace->_index); | |
| 1579 } | |
| 1580 | |
| 1581 // Handle special cases. | |
| 1582 if (adr_type == NULL) return alias_type(AliasIdxTop); | |
| 1583 if (adr_type == TypePtr::BOTTOM) return alias_type(AliasIdxBot); | |
| 1584 | |
| 1585 // Do it the slow way. | |
| 1586 const TypePtr* flat = flatten_alias_type(adr_type); | |
| 1587 | |
| 1588 #ifdef ASSERT | |
| 1589 assert(flat == flatten_alias_type(flat), "idempotent"); | |
| 1590 assert(flat != TypePtr::BOTTOM, "cannot alias-analyze an untyped ptr"); | |
| 1591 if (flat->isa_oopptr() && !flat->isa_klassptr()) { | |
| 1592 const TypeOopPtr* foop = flat->is_oopptr(); | |
| 247 | 1593 // Scalarizable allocations have exact klass always. |
| 1594 bool exact = !foop->klass_is_exact() || foop->is_known_instance(); | |
| 1595 const TypePtr* xoop = foop->cast_to_exactness(exact)->is_ptr(); | |
| 0 | 1596 assert(foop == flatten_alias_type(xoop), "exactness must not affect alias type"); |
| 1597 } | |
| 1598 assert(flat == flatten_alias_type(flat), "exact bit doesn't matter"); | |
| 1599 #endif | |
| 1600 | |
| 1601 int idx = AliasIdxTop; | |
| 1602 for (int i = 0; i < num_alias_types(); i++) { | |
| 1603 if (alias_type(i)->adr_type() == flat) { | |
| 1604 idx = i; | |
| 1605 break; | |
| 1606 } | |
| 1607 } | |
| 1608 | |
| 1609 if (idx == AliasIdxTop) { | |
| 1610 if (no_create) return NULL; | |
| 1611 // Grow the array if necessary. | |
| 1612 if (_num_alias_types == _max_alias_types) grow_alias_types(); | |
| 1613 // Add a new alias type. | |
| 1614 idx = _num_alias_types++; | |
| 1615 _alias_types[idx]->Init(idx, flat); | |
| 1616 if (flat == TypeInstPtr::KLASS) alias_type(idx)->set_rewritable(false); | |
| 1617 if (flat == TypeAryPtr::RANGE) alias_type(idx)->set_rewritable(false); | |
| 1618 if (flat->isa_instptr()) { | |
| 1619 if (flat->offset() == java_lang_Class::klass_offset_in_bytes() | |
| 1620 && flat->is_instptr()->klass() == env()->Class_klass()) | |
| 1621 alias_type(idx)->set_rewritable(false); | |
| 1622 } | |
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1623 if (flat->isa_aryptr()) { |
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1624 #ifdef ASSERT |
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1625 const int header_size_min = arrayOopDesc::base_offset_in_bytes(T_BYTE); |
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1626 // (T_BYTE has the weakest alignment and size restrictions...) |
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1627 assert(flat->offset() < header_size_min, "array body reference must be OffsetBot"); |
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1628 #endif |
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1629 if (flat->offset() == TypePtr::OffsetBot) { |
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1630 alias_type(idx)->set_element(flat->is_aryptr()->elem()); |
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1631 } |
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1632 } |
| 0 | 1633 if (flat->isa_klassptr()) { |
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1634 if (flat->offset() == in_bytes(Klass::super_check_offset_offset())) |
| 0 | 1635 alias_type(idx)->set_rewritable(false); |
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1636 if (flat->offset() == in_bytes(Klass::modifier_flags_offset())) |
| 0 | 1637 alias_type(idx)->set_rewritable(false); |
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1638 if (flat->offset() == in_bytes(Klass::access_flags_offset())) |
| 0 | 1639 alias_type(idx)->set_rewritable(false); |
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1640 if (flat->offset() == in_bytes(Klass::java_mirror_offset())) |
| 0 | 1641 alias_type(idx)->set_rewritable(false); |
| 1642 } | |
| 1643 // %%% (We would like to finalize JavaThread::threadObj_offset(), | |
| 1644 // but the base pointer type is not distinctive enough to identify | |
| 1645 // references into JavaThread.) | |
| 1646 | |
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1647 // Check for final fields. |
| 0 | 1648 const TypeInstPtr* tinst = flat->isa_instptr(); |
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1649 if (tinst && tinst->offset() >= instanceOopDesc::base_offset_in_bytes()) { |
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1650 ciField* field; |
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1651 if (tinst->const_oop() != NULL && |
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1652 tinst->klass() == ciEnv::current()->Class_klass() && |
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1653 tinst->offset() >= (tinst->klass()->as_instance_klass()->size_helper() * wordSize)) { |
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1654 // static field |
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1655 ciInstanceKlass* k = tinst->const_oop()->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
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1656 field = k->get_field_by_offset(tinst->offset(), true); |
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1657 } else { |
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1658 ciInstanceKlass *k = tinst->klass()->as_instance_klass(); |
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1659 field = k->get_field_by_offset(tinst->offset(), false); |
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1660 } |
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1661 assert(field == NULL || |
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1662 original_field == NULL || |
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1663 (field->holder() == original_field->holder() && |
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1664 field->offset() == original_field->offset() && |
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1665 field->is_static() == original_field->is_static()), "wrong field?"); |
| 0 | 1666 // Set field() and is_rewritable() attributes. |
| 1667 if (field != NULL) alias_type(idx)->set_field(field); | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 // Fill the cache for next time. | |
| 1672 ace->_adr_type = adr_type; | |
| 1673 ace->_index = idx; | |
| 1674 assert(alias_type(adr_type) == alias_type(idx), "type must be installed"); | |
| 1675 | |
| 1676 // Might as well try to fill the cache for the flattened version, too. | |
| 1677 AliasCacheEntry* face = probe_alias_cache(flat); | |
| 1678 if (face->_adr_type == NULL) { | |
| 1679 face->_adr_type = flat; | |
| 1680 face->_index = idx; | |
| 1681 assert(alias_type(flat) == alias_type(idx), "flat type must work too"); | |
| 1682 } | |
| 1683 | |
| 1684 return alias_type(idx); | |
| 1685 } | |
| 1686 | |
| 1687 | |
| 1688 Compile::AliasType* Compile::alias_type(ciField* field) { | |
| 1689 const TypeOopPtr* t; | |
| 1690 if (field->is_static()) | |
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1691 t = TypeInstPtr::make(field->holder()->java_mirror()); |
| 0 | 1692 else |
| 1693 t = TypeOopPtr::make_from_klass_raw(field->holder()); | |
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1694 AliasType* atp = alias_type(t->add_offset(field->offset_in_bytes()), field); |
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1695 assert((field->is_final() || field->is_stable()) == !atp->is_rewritable(), "must get the rewritable bits correct"); |
| 0 | 1696 return atp; |
| 1697 } | |
| 1698 | |
| 1699 | |
| 1700 //------------------------------have_alias_type-------------------------------- | |
| 1701 bool Compile::have_alias_type(const TypePtr* adr_type) { | |
| 1702 AliasCacheEntry* ace = probe_alias_cache(adr_type); | |
| 1703 if (ace->_adr_type == adr_type) { | |
| 1704 return true; | |
| 1705 } | |
| 1706 | |
| 1707 // Handle special cases. | |
| 1708 if (adr_type == NULL) return true; | |
| 1709 if (adr_type == TypePtr::BOTTOM) return true; | |
| 1710 | |
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1711 return find_alias_type(adr_type, true, NULL) != NULL; |
| 0 | 1712 } |
| 1713 | |
| 1714 //-----------------------------must_alias-------------------------------------- | |
| 1715 // True if all values of the given address type are in the given alias category. | |
| 1716 bool Compile::must_alias(const TypePtr* adr_type, int alias_idx) { | |
| 1717 if (alias_idx == AliasIdxBot) return true; // the universal category | |
| 1718 if (adr_type == NULL) return true; // NULL serves as TypePtr::TOP | |
| 1719 if (alias_idx == AliasIdxTop) return false; // the empty category | |
| 1720 if (adr_type->base() == Type::AnyPtr) return false; // TypePtr::BOTTOM or its twins | |
| 1721 | |
| 1722 // the only remaining possible overlap is identity | |
| 1723 int adr_idx = get_alias_index(adr_type); | |
| 1724 assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, ""); | |
| 1725 assert(adr_idx == alias_idx || | |
| 1726 (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM | |
| 1727 && adr_type != TypeOopPtr::BOTTOM), | |
| 1728 "should not be testing for overlap with an unsafe pointer"); | |
| 1729 return adr_idx == alias_idx; | |
| 1730 } | |
| 1731 | |
| 1732 //------------------------------can_alias-------------------------------------- | |
| 1733 // True if any values of the given address type are in the given alias category. | |
| 1734 bool Compile::can_alias(const TypePtr* adr_type, int alias_idx) { | |
| 1735 if (alias_idx == AliasIdxTop) return false; // the empty category | |
| 1736 if (adr_type == NULL) return false; // NULL serves as TypePtr::TOP | |
| 1737 if (alias_idx == AliasIdxBot) return true; // the universal category | |
| 1738 if (adr_type->base() == Type::AnyPtr) return true; // TypePtr::BOTTOM or its twins | |
| 1739 | |
| 1740 // the only remaining possible overlap is identity | |
| 1741 int adr_idx = get_alias_index(adr_type); | |
| 1742 assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, ""); | |
| 1743 return adr_idx == alias_idx; | |
| 1744 } | |
| 1745 | |
| 1746 | |
| 1747 | |
| 1748 //---------------------------pop_warm_call------------------------------------- | |
| 1749 WarmCallInfo* Compile::pop_warm_call() { | |
| 1750 WarmCallInfo* wci = _warm_calls; | |
| 1751 if (wci != NULL) _warm_calls = wci->remove_from(wci); | |
| 1752 return wci; | |
| 1753 } | |
| 1754 | |
| 1755 //----------------------------Inline_Warm-------------------------------------- | |
| 1756 int Compile::Inline_Warm() { | |
| 1757 // If there is room, try to inline some more warm call sites. | |
| 1758 // %%% Do a graph index compaction pass when we think we're out of space? | |
| 1759 if (!InlineWarmCalls) return 0; | |
| 1760 | |
| 1761 int calls_made_hot = 0; | |
| 1762 int room_to_grow = NodeCountInliningCutoff - unique(); | |
| 1763 int amount_to_grow = MIN2(room_to_grow, (int)NodeCountInliningStep); | |
| 1764 int amount_grown = 0; | |
| 1765 WarmCallInfo* call; | |
| 1766 while (amount_to_grow > 0 && (call = pop_warm_call()) != NULL) { | |
| 1767 int est_size = (int)call->size(); | |
| 1768 if (est_size > (room_to_grow - amount_grown)) { | |
| 1769 // This one won't fit anyway. Get rid of it. | |
| 1770 call->make_cold(); | |
| 1771 continue; | |
| 1772 } | |
| 1773 call->make_hot(); | |
| 1774 calls_made_hot++; | |
| 1775 amount_grown += est_size; | |
| 1776 amount_to_grow -= est_size; | |
| 1777 } | |
| 1778 | |
| 1779 if (calls_made_hot > 0) set_major_progress(); | |
| 1780 return calls_made_hot; | |
| 1781 } | |
| 1782 | |
| 1783 | |
| 1784 //----------------------------Finish_Warm-------------------------------------- | |
| 1785 void Compile::Finish_Warm() { | |
| 1786 if (!InlineWarmCalls) return; | |
| 1787 if (failing()) return; | |
| 1788 if (warm_calls() == NULL) return; | |
| 1789 | |
| 1790 // Clean up loose ends, if we are out of space for inlining. | |
| 1791 WarmCallInfo* call; | |
| 1792 while ((call = pop_warm_call()) != NULL) { | |
| 1793 call->make_cold(); | |
| 1794 } | |
| 1795 } | |
| 1796 | |
| 1172 | 1797 //---------------------cleanup_loop_predicates----------------------- |
| 1798 // Remove the opaque nodes that protect the predicates so that all unused | |
| 1799 // checks and uncommon_traps will be eliminated from the ideal graph | |
| 1800 void Compile::cleanup_loop_predicates(PhaseIterGVN &igvn) { | |
| 1801 if (predicate_count()==0) return; | |
| 1802 for (int i = predicate_count(); i > 0; i--) { | |
| 1803 Node * n = predicate_opaque1_node(i-1); | |
| 1804 assert(n->Opcode() == Op_Opaque1, "must be"); | |
| 1805 igvn.replace_node(n, n->in(1)); | |
| 1806 } | |
| 1807 assert(predicate_count()==0, "should be clean!"); | |
| 1808 } | |
| 0 | 1809 |
| 7473 | 1810 // StringOpts and late inlining of string methods |
| 1811 void Compile::inline_string_calls(bool parse_time) { | |
| 1812 { | |
| 1813 // remove useless nodes to make the usage analysis simpler | |
| 1814 ResourceMark rm; | |
| 1815 PhaseRemoveUseless pru(initial_gvn(), for_igvn()); | |
| 1816 } | |
| 1817 | |
| 1818 { | |
| 1819 ResourceMark rm; | |
| 10405 | 1820 print_method(PHASE_BEFORE_STRINGOPTS, 3); |
| 7473 | 1821 PhaseStringOpts pso(initial_gvn(), for_igvn()); |
| 10405 | 1822 print_method(PHASE_AFTER_STRINGOPTS, 3); |
| 7473 | 1823 } |
| 1824 | |
| 1825 // now inline anything that we skipped the first time around | |
| 1826 if (!parse_time) { | |
| 1827 _late_inlines_pos = _late_inlines.length(); | |
| 1828 } | |
| 1829 | |
| 1830 while (_string_late_inlines.length() > 0) { | |
| 1831 CallGenerator* cg = _string_late_inlines.pop(); | |
| 1832 cg->do_late_inline(); | |
| 1833 if (failing()) return; | |
| 1834 } | |
| 1835 _string_late_inlines.trunc_to(0); | |
| 1836 } | |
| 1837 | |
| 10278 | 1838 // Late inlining of boxing methods |
| 1839 void Compile::inline_boxing_calls(PhaseIterGVN& igvn) { | |
| 1840 if (_boxing_late_inlines.length() > 0) { | |
| 1841 assert(has_boxed_value(), "inconsistent"); | |
| 1842 | |
| 1843 PhaseGVN* gvn = initial_gvn(); | |
| 1844 set_inlining_incrementally(true); | |
| 1845 | |
| 1846 assert( igvn._worklist.size() == 0, "should be done with igvn" ); | |
| 1847 for_igvn()->clear(); | |
| 1848 gvn->replace_with(&igvn); | |
| 1849 | |
| 1850 while (_boxing_late_inlines.length() > 0) { | |
| 1851 CallGenerator* cg = _boxing_late_inlines.pop(); | |
| 1852 cg->do_late_inline(); | |
| 1853 if (failing()) return; | |
| 1854 } | |
| 1855 _boxing_late_inlines.trunc_to(0); | |
| 1856 | |
| 1857 { | |
| 1858 ResourceMark rm; | |
| 1859 PhaseRemoveUseless pru(gvn, for_igvn()); | |
| 1860 } | |
| 1861 | |
| 1862 igvn = PhaseIterGVN(gvn); | |
| 1863 igvn.optimize(); | |
| 1864 | |
| 1865 set_inlining_progress(false); | |
| 1866 set_inlining_incrementally(false); | |
| 1867 } | |
| 1868 } | |
| 1869 | |
| 7473 | 1870 void Compile::inline_incrementally_one(PhaseIterGVN& igvn) { |
| 1871 assert(IncrementalInline, "incremental inlining should be on"); | |
| 1872 PhaseGVN* gvn = initial_gvn(); | |
| 1873 | |
| 1874 set_inlining_progress(false); | |
| 1875 for_igvn()->clear(); | |
| 1876 gvn->replace_with(&igvn); | |
| 1877 | |
| 1878 int i = 0; | |
| 1879 | |
| 1880 for (; i <_late_inlines.length() && !inlining_progress(); i++) { | |
| 1881 CallGenerator* cg = _late_inlines.at(i); | |
| 1882 _late_inlines_pos = i+1; | |
| 1883 cg->do_late_inline(); | |
| 1884 if (failing()) return; | |
| 1885 } | |
| 1886 int j = 0; | |
| 1887 for (; i < _late_inlines.length(); i++, j++) { | |
| 1888 _late_inlines.at_put(j, _late_inlines.at(i)); | |
| 1889 } | |
| 1890 _late_inlines.trunc_to(j); | |
| 1891 | |
| 1892 { | |
| 1893 ResourceMark rm; | |
| 10278 | 1894 PhaseRemoveUseless pru(gvn, for_igvn()); |
| 7473 | 1895 } |
| 1896 | |
| 1897 igvn = PhaseIterGVN(gvn); | |
| 1898 } | |
| 1899 | |
| 1900 // Perform incremental inlining until bound on number of live nodes is reached | |
| 1901 void Compile::inline_incrementally(PhaseIterGVN& igvn) { | |
| 1902 PhaseGVN* gvn = initial_gvn(); | |
| 1903 | |
| 1904 set_inlining_incrementally(true); | |
| 1905 set_inlining_progress(true); | |
| 1906 uint low_live_nodes = 0; | |
| 1907 | |
| 1908 while(inlining_progress() && _late_inlines.length() > 0) { | |
| 1909 | |
| 1910 if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { | |
| 1911 if (low_live_nodes < (uint)LiveNodeCountInliningCutoff * 8 / 10) { | |
| 1912 // PhaseIdealLoop is expensive so we only try it once we are | |
| 1913 // out of loop and we only try it again if the previous helped | |
| 1914 // got the number of nodes down significantly | |
| 1915 PhaseIdealLoop ideal_loop( igvn, false, true ); | |
| 1916 if (failing()) return; | |
| 1917 low_live_nodes = live_nodes(); | |
| 1918 _major_progress = true; | |
| 1919 } | |
| 1920 | |
| 1921 if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { | |
| 1922 break; | |
| 1923 } | |
| 1924 } | |
| 1925 | |
| 1926 inline_incrementally_one(igvn); | |
| 1927 | |
| 1928 if (failing()) return; | |
| 1929 | |
| 1930 igvn.optimize(); | |
| 1931 | |
| 1932 if (failing()) return; | |
| 1933 } | |
| 1934 | |
| 1935 assert( igvn._worklist.size() == 0, "should be done with igvn" ); | |
| 1936 | |
| 1937 if (_string_late_inlines.length() > 0) { | |
| 1938 assert(has_stringbuilder(), "inconsistent"); | |
| 1939 for_igvn()->clear(); | |
| 1940 initial_gvn()->replace_with(&igvn); | |
| 1941 | |
| 1942 inline_string_calls(false); | |
| 1943 | |
| 1944 if (failing()) return; | |
| 1945 | |
| 1946 { | |
| 1947 ResourceMark rm; | |
| 1948 PhaseRemoveUseless pru(initial_gvn(), for_igvn()); | |
| 1949 } | |
| 1950 | |
| 1951 igvn = PhaseIterGVN(gvn); | |
| 1952 | |
| 1953 igvn.optimize(); | |
| 1954 } | |
| 1955 | |
| 1956 set_inlining_incrementally(false); | |
| 1957 } | |
| 1958 | |
| 1959 | |
| 0 | 1960 //------------------------------Optimize--------------------------------------- |
| 1961 // Given a graph, optimize it. | |
| 1962 void Compile::Optimize() { | |
| 1963 TracePhase t1("optimizer", &_t_optimizer, true); | |
| 1964 | |
| 1965 #ifndef PRODUCT | |
| 1966 if (env()->break_at_compile()) { | |
| 1967 BREAKPOINT; | |
| 1968 } | |
| 1969 | |
| 1970 #endif | |
| 1971 | |
| 1972 ResourceMark rm; | |
| 1973 int loop_opts_cnt; | |
| 1974 | |
| 1975 NOT_PRODUCT( verify_graph_edges(); ) | |
| 1976 | |
| 10405 | 1977 print_method(PHASE_AFTER_PARSING); |
| 0 | 1978 |
| 1979 { | |
| 1980 // Iterative Global Value Numbering, including ideal transforms | |
| 1981 // Initialize IterGVN with types and values from parse-time GVN | |
| 1982 PhaseIterGVN igvn(initial_gvn()); | |
| 1983 { | |
| 1984 NOT_PRODUCT( TracePhase t2("iterGVN", &_t_iterGVN, TimeCompiler); ) | |
| 1985 igvn.optimize(); | |
| 1986 } | |
| 1987 | |
| 10405 | 1988 print_method(PHASE_ITER_GVN1, 2); |
| 0 | 1989 |
| 1990 if (failing()) return; | |
| 1991 | |
| 10278 | 1992 { |
| 1993 NOT_PRODUCT( TracePhase t2("incrementalInline", &_t_incrInline, TimeCompiler); ) | |
| 1994 inline_incrementally(igvn); | |
| 1995 } | |
| 7473 | 1996 |
| 10405 | 1997 print_method(PHASE_INCREMENTAL_INLINE, 2); |
| 7473 | 1998 |
| 1999 if (failing()) return; | |
| 2000 | |
| 10278 | 2001 if (eliminate_boxing()) { |
| 2002 NOT_PRODUCT( TracePhase t2("incrementalInline", &_t_incrInline, TimeCompiler); ) | |
| 2003 // Inline valueOf() methods now. | |
| 2004 inline_boxing_calls(igvn); | |
| 2005 | |
| 10405 | 2006 print_method(PHASE_INCREMENTAL_BOXING_INLINE, 2); |
| 10278 | 2007 |
| 2008 if (failing()) return; | |
| 2009 } | |
| 2010 | |
|
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2011 // No more new expensive nodes will be added to the list from here |
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2012 // so keep only the actual candidates for optimizations. |
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2013 cleanup_expensive_nodes(igvn); |
|
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|
2014 |
|
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2015 // Perform escape analysis |
|
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2016 if (_do_escape_analysis && ConnectionGraph::has_candidates(this)) { |
|
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2017 if (has_loops()) { |
|
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2018 // Cleanup graph (remove dead nodes). |
|
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2019 TracePhase t2("idealLoop", &_t_idealLoop, true); |
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2020 PhaseIdealLoop ideal_loop( igvn, false, true ); |
| 10405 | 2021 if (major_progress()) print_method(PHASE_PHASEIDEAL_BEFORE_EA, 2); |
|
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2022 if (failing()) return; |
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|
2023 } |
|
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2024 ConnectionGraph::do_analysis(this, &igvn); |
|
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|
2025 |
|
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|
2026 if (failing()) return; |
|
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|
2027 |
| 4115 | 2028 // Optimize out fields loads from scalar replaceable allocations. |
|
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|
2029 igvn.optimize(); |
| 10405 | 2030 print_method(PHASE_ITER_GVN_AFTER_EA, 2); |
|
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|
2031 |
|
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|
2032 if (failing()) return; |
|
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|
2033 |
| 4115 | 2034 if (congraph() != NULL && macro_count() > 0) { |
|
5948
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|
2035 NOT_PRODUCT( TracePhase t2("macroEliminate", &_t_macroEliminate, TimeCompiler); ) |
| 4115 | 2036 PhaseMacroExpand mexp(igvn); |
| 2037 mexp.eliminate_macro_nodes(); | |
| 2038 igvn.set_delay_transform(false); | |
| 2039 | |
| 2040 igvn.optimize(); | |
| 10405 | 2041 print_method(PHASE_ITER_GVN_AFTER_ELIMINATION, 2); |
| 4115 | 2042 |
| 2043 if (failing()) return; | |
| 2044 } | |
|
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2045 } |
|
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|
2046 |
| 0 | 2047 // Loop transforms on the ideal graph. Range Check Elimination, |
| 2048 // peeling, unrolling, etc. | |
| 2049 | |
| 2050 // Set loop opts counter | |
| 2051 loop_opts_cnt = num_loop_opts(); | |
| 2052 if((loop_opts_cnt > 0) && (has_loops() || has_split_ifs())) { | |
| 2053 { | |
| 2054 TracePhase t2("idealLoop", &_t_idealLoop, true); | |
| 2445 | 2055 PhaseIdealLoop ideal_loop( igvn, true ); |
| 0 | 2056 loop_opts_cnt--; |
| 10405 | 2057 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP1, 2); |
| 0 | 2058 if (failing()) return; |
| 2059 } | |
| 2060 // Loop opts pass if partial peeling occurred in previous pass | |
| 2061 if(PartialPeelLoop && major_progress() && (loop_opts_cnt > 0)) { | |
| 2062 TracePhase t3("idealLoop", &_t_idealLoop, true); | |
| 2445 | 2063 PhaseIdealLoop ideal_loop( igvn, false ); |
| 0 | 2064 loop_opts_cnt--; |
| 10405 | 2065 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP2, 2); |
| 0 | 2066 if (failing()) return; |
| 2067 } | |
| 2068 // Loop opts pass for loop-unrolling before CCP | |
| 2069 if(major_progress() && (loop_opts_cnt > 0)) { | |
| 2070 TracePhase t4("idealLoop", &_t_idealLoop, true); | |
| 2445 | 2071 PhaseIdealLoop ideal_loop( igvn, false ); |
| 0 | 2072 loop_opts_cnt--; |
| 10405 | 2073 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP3, 2); |
| 0 | 2074 } |
|
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2075 if (!failing()) { |
|
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|
2076 // Verify that last round of loop opts produced a valid graph |
|
046932b72aa2
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diff
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|
2077 NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); ) |
|
046932b72aa2
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parents:
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diff
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|
2078 PhaseIdealLoop::verify(igvn); |
|
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diff
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|
2079 } |
| 0 | 2080 } |
| 2081 if (failing()) return; | |
| 2082 | |
| 2083 // Conditional Constant Propagation; | |
| 2084 PhaseCCP ccp( &igvn ); | |
| 2085 assert( true, "Break here to ccp.dump_nodes_and_types(_root,999,1)"); | |
| 2086 { | |
| 2087 TracePhase t2("ccp", &_t_ccp, true); | |
| 2088 ccp.do_transform(); | |
| 2089 } | |
| 10405 | 2090 print_method(PHASE_CPP1, 2); |
| 0 | 2091 |
| 2092 assert( true, "Break here to ccp.dump_old2new_map()"); | |
| 2093 | |
| 2094 // Iterative Global Value Numbering, including ideal transforms | |
| 2095 { | |
| 2096 NOT_PRODUCT( TracePhase t2("iterGVN2", &_t_iterGVN2, TimeCompiler); ) | |
| 2097 igvn = ccp; | |
| 2098 igvn.optimize(); | |
| 2099 } | |
| 2100 | |
| 10405 | 2101 print_method(PHASE_ITER_GVN2, 2); |
| 0 | 2102 |
| 2103 if (failing()) return; | |
| 2104 | |
| 2105 // Loop transforms on the ideal graph. Range Check Elimination, | |
| 2106 // peeling, unrolling, etc. | |
| 2107 if(loop_opts_cnt > 0) { | |
| 2108 debug_only( int cnt = 0; ); | |
| 2109 while(major_progress() && (loop_opts_cnt > 0)) { | |
| 2110 TracePhase t2("idealLoop", &_t_idealLoop, true); | |
| 2111 assert( cnt++ < 40, "infinite cycle in loop optimization" ); | |
| 2445 | 2112 PhaseIdealLoop ideal_loop( igvn, true); |
| 0 | 2113 loop_opts_cnt--; |
| 10405 | 2114 if (major_progress()) print_method(PHASE_PHASEIDEALLOOP_ITERATIONS, 2); |
| 0 | 2115 if (failing()) return; |
| 2116 } | |
| 2117 } | |
|
921
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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|
2118 |
|
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
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diff
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|
2119 { |
|
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
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|
2120 // Verify that all previous optimizations produced a valid graph |
|
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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|
2121 // at least to this point, even if no loop optimizations were done. |
|
046932b72aa2
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|
2122 NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); ) |
|
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
never
parents:
859
diff
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|
2123 PhaseIdealLoop::verify(igvn); |
|
046932b72aa2
6862956: PhaseIdealLoop should have a CFG verification mode
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parents:
859
diff
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|
2124 } |
|
046932b72aa2
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diff
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|
2125 |
| 0 | 2126 { |
| 2127 NOT_PRODUCT( TracePhase t2("macroExpand", &_t_macroExpand, TimeCompiler); ) | |
| 2128 PhaseMacroExpand mex(igvn); | |
| 2129 if (mex.expand_macro_nodes()) { | |
| 2130 assert(failing(), "must bail out w/ explicit message"); | |
| 2131 return; | |
| 2132 } | |
| 2133 } | |
| 2134 | |
| 2135 } // (End scope of igvn; run destructor if necessary for asserts.) | |
| 2136 | |
| 7605 | 2137 dump_inlining(); |
| 0 | 2138 // A method with only infinite loops has no edges entering loops from root |
| 2139 { | |
| 2140 NOT_PRODUCT( TracePhase t2("graphReshape", &_t_graphReshaping, TimeCompiler); ) | |
| 2141 if (final_graph_reshaping()) { | |
| 2142 assert(failing(), "must bail out w/ explicit message"); | |
| 2143 return; | |
| 2144 } | |
| 2145 } | |
| 2146 | |
| 10405 | 2147 print_method(PHASE_OPTIMIZE_FINISHED, 2); |
| 0 | 2148 } |
| 2149 | |
| 2150 | |
| 2151 //------------------------------Code_Gen--------------------------------------- | |
| 2152 // Given a graph, generate code for it | |
| 2153 void Compile::Code_Gen() { | |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
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|
2154 if (failing()) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2155 return; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2156 } |
| 0 | 2157 |
| 2158 // Perform instruction selection. You might think we could reclaim Matcher | |
| 2159 // memory PDQ, but actually the Matcher is used in generating spill code. | |
| 2160 // Internals of the Matcher (including some VectorSets) must remain live | |
| 2161 // for awhile - thus I cannot reclaim Matcher memory lest a VectorSet usage | |
| 2162 // set a bit in reclaimed memory. | |
| 2163 | |
| 2164 // In debug mode can dump m._nodes.dump() for mapping of ideal to machine | |
| 2165 // nodes. Mapping is only valid at the root of each matched subtree. | |
| 2166 NOT_PRODUCT( verify_graph_edges(); ) | |
| 2167 | |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2168 Matcher matcher; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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diff
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|
2169 _matcher = &matcher; |
| 0 | 2170 { |
| 2171 TracePhase t2("matcher", &_t_matcher, true); | |
|
12071
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8023003: Cleanup the public interface to PhaseCFG
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diff
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|
2172 matcher.match(); |
| 0 | 2173 } |
| 2174 // In debug mode can dump m._nodes.dump() for mapping of ideal to machine | |
| 2175 // nodes. Mapping is only valid at the root of each matched subtree. | |
| 2176 NOT_PRODUCT( verify_graph_edges(); ) | |
| 2177 | |
| 2178 // If you have too many nodes, or if matching has failed, bail out | |
| 2179 check_node_count(0, "out of nodes matching instructions"); | |
|
12071
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8023003: Cleanup the public interface to PhaseCFG
adlertz
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diff
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|
2180 if (failing()) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
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|
2181 return; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
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|
2182 } |
| 0 | 2183 |
| 2184 // Build a proper-looking CFG | |
|
12071
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8023003: Cleanup the public interface to PhaseCFG
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12023
diff
changeset
|
2185 PhaseCFG cfg(node_arena(), root(), matcher); |
| 0 | 2186 _cfg = &cfg; |
| 2187 { | |
| 2188 NOT_PRODUCT( TracePhase t2("scheduler", &_t_scheduler, TimeCompiler); ) | |
|
12071
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8023003: Cleanup the public interface to PhaseCFG
adlertz
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diff
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|
2189 bool success = cfg.do_global_code_motion(); |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
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|
2190 if (!success) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
changeset
|
2191 return; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
diff
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|
2192 } |
| 0 | 2193 |
| 10405 | 2194 print_method(PHASE_GLOBAL_CODE_MOTION, 2); |
| 0 | 2195 NOT_PRODUCT( verify_graph_edges(); ) |
| 2196 debug_only( cfg.verify(); ) | |
| 2197 } | |
|
12071
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8023003: Cleanup the public interface to PhaseCFG
adlertz
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|
2198 |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
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12023
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|
2199 PhaseChaitin regalloc(unique(), cfg, matcher); |
| 0 | 2200 _regalloc = ®alloc; |
| 2201 { | |
| 2202 TracePhase t2("regalloc", &_t_registerAllocation, true); | |
| 2203 // Perform register allocation. After Chaitin, use-def chains are | |
| 2204 // no longer accurate (at spill code) and so must be ignored. | |
| 2205 // Node->LRG->reg mappings are still accurate. | |
| 2206 _regalloc->Register_Allocate(); | |
| 2207 | |
| 2208 // Bail out if the allocator builds too many nodes | |
| 10111 | 2209 if (failing()) { |
| 2210 return; | |
| 2211 } | |
| 0 | 2212 } |
| 2213 | |
| 2214 // Prior to register allocation we kept empty basic blocks in case the | |
| 2215 // the allocator needed a place to spill. After register allocation we | |
| 2216 // are not adding any new instructions. If any basic block is empty, we | |
| 2217 // can now safely remove it. | |
| 2218 { | |
| 418 | 2219 NOT_PRODUCT( TracePhase t2("blockOrdering", &_t_blockOrdering, TimeCompiler); ) |
|
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8023003: Cleanup the public interface to PhaseCFG
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|
2220 cfg.remove_empty_blocks(); |
| 418 | 2221 if (do_freq_based_layout()) { |
| 2222 PhaseBlockLayout layout(cfg); | |
| 2223 } else { | |
| 2224 cfg.set_loop_alignment(); | |
| 2225 } | |
| 2226 cfg.fixup_flow(); | |
| 0 | 2227 } |
| 2228 | |
| 2229 // Apply peephole optimizations | |
| 2230 if( OptoPeephole ) { | |
| 2231 NOT_PRODUCT( TracePhase t2("peephole", &_t_peephole, TimeCompiler); ) | |
| 2232 PhasePeephole peep( _regalloc, cfg); | |
| 2233 peep.do_transform(); | |
| 2234 } | |
| 2235 | |
| 2236 // Convert Nodes to instruction bits in a buffer | |
| 2237 { | |
| 2238 // %%%% workspace merge brought two timers together for one job | |
| 2239 TracePhase t2a("output", &_t_output, true); | |
| 2240 NOT_PRODUCT( TraceTime t2b(NULL, &_t_codeGeneration, TimeCompiler, false); ) | |
| 2241 Output(); | |
| 2242 } | |
| 2243 | |
| 10405 | 2244 print_method(PHASE_FINAL_CODE); |
| 0 | 2245 |
| 2246 // He's dead, Jim. | |
| 2247 _cfg = (PhaseCFG*)0xdeadbeef; | |
| 2248 _regalloc = (PhaseChaitin*)0xdeadbeef; | |
| 2249 } | |
| 2250 | |
| 2251 | |
| 2252 //------------------------------dump_asm--------------------------------------- | |
| 2253 // Dump formatted assembly | |
| 2254 #ifndef PRODUCT | |
| 2255 void Compile::dump_asm(int *pcs, uint pc_limit) { | |
| 2256 bool cut_short = false; | |
| 2257 tty->print_cr("#"); | |
| 2258 tty->print("# "); _tf->dump(); tty->cr(); | |
| 2259 tty->print_cr("#"); | |
| 2260 | |
| 2261 // For all blocks | |
| 2262 int pc = 0x0; // Program counter | |
| 2263 char starts_bundle = ' '; | |
| 2264 _regalloc->dump_frame(); | |
| 2265 | |
| 2266 Node *n = NULL; | |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2267 for (uint i = 0; i < _cfg->number_of_blocks(); i++) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2268 if (VMThread::should_terminate()) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2269 cut_short = true; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2270 break; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2271 } |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2272 Block* block = _cfg->get_block(i); |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2273 if (block->is_connector() && !Verbose) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2274 continue; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2275 } |
|
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2276 n = block->head(); |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2277 if (pcs && n->_idx < pc_limit) { |
| 0 | 2278 tty->print("%3.3x ", pcs[n->_idx]); |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2279 } else { |
| 0 | 2280 tty->print(" "); |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2281 } |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2282 block->dump_head(_cfg); |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2283 if (block->is_connector()) { |
| 0 | 2284 tty->print_cr(" # Empty connector block"); |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2285 } else if (block->num_preds() == 2 && block->pred(1)->is_CatchProj() && block->pred(1)->as_CatchProj()->_con == CatchProjNode::fall_through_index) { |
| 0 | 2286 tty->print_cr(" # Block is sole successor of call"); |
| 2287 } | |
| 2288 | |
| 2289 // For all instructions | |
| 2290 Node *delay = NULL; | |
|
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2291 for (uint j = 0; j < block->number_of_nodes(); j++) { |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2292 if (VMThread::should_terminate()) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2293 cut_short = true; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2294 break; |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2295 } |
|
12167
650868c062a9
8023691: Create interface for nodes in class Block
adlertz
parents:
12071
diff
changeset
|
2296 n = block->get_node(j); |
| 0 | 2297 if (valid_bundle_info(n)) { |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2298 Bundle* bundle = node_bundling(n); |
| 0 | 2299 if (bundle->used_in_unconditional_delay()) { |
| 2300 delay = n; | |
| 2301 continue; | |
| 2302 } | |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2303 if (bundle->starts_bundle()) { |
| 0 | 2304 starts_bundle = '+'; |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2305 } |
| 0 | 2306 } |
| 2307 | |
|
12071
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2308 if (WizardMode) { |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2309 n->dump(); |
|
adb9a7d94cb5
8023003: Cleanup the public interface to PhaseCFG
adlertz
parents:
12023
diff
changeset
|
2310 } |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2311 |
| 0 | 2312 if( !n->is_Region() && // Dont print in the Assembly |
| 2313 !n->is_Phi() && // a few noisely useless nodes | |
| 2314 !n->is_Proj() && | |
| 2315 !n->is_MachTemp() && | |
|
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1080
diff
changeset
|
2316 !n->is_SafePointScalarObject() && |
| 0 | 2317 !n->is_Catch() && // Would be nice to print exception table targets |
| 2318 !n->is_MergeMem() && // Not very interesting | |
| 2319 !n->is_top() && // Debug info table constants | |
| 2320 !(n->is_Con() && !n->is_Mach())// Debug info table constants | |
| 2321 ) { | |
| 2322 if (pcs && n->_idx < pc_limit) | |
| 2323 tty->print("%3.3x", pcs[n->_idx]); | |
| 2324 else | |
| 2325 tty->print(" "); | |
| 2326 tty->print(" %c ", starts_bundle); | |
| 2327 starts_bundle = ' '; | |
| 2328 tty->print("\t"); | |
| 2329 n->format(_regalloc, tty); | |
| 2330 tty->cr(); | |
| 2331 } | |
| 2332 | |
| 2333 // If we have an instruction with a delay slot, and have seen a delay, | |
| 2334 // then back up and print it | |
| 2335 if (valid_bundle_info(n) && node_bundling(n)->use_unconditional_delay()) { | |
| 2336 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
|
2337 if (WizardMode) delay->dump(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2338 |
| 0 | 2339 if (node_bundling(delay)->starts_bundle()) |
| 2340 starts_bundle = '+'; | |
| 2341 if (pcs && n->_idx < pc_limit) | |
| 2342 tty->print("%3.3x", pcs[n->_idx]); | |
| 2343 else | |
| 2344 tty->print(" "); | |
| 2345 tty->print(" %c ", starts_bundle); | |
| 2346 starts_bundle = ' '; | |
| 2347 tty->print("\t"); | |
| 2348 delay->format(_regalloc, tty); | |
| 2349 tty->print_cr(""); | |
| 2350 delay = NULL; | |
| 2351 } | |
| 2352 | |
| 2353 // Dump the exception table as well | |
| 2354 if( n->is_Catch() && (Verbose || WizardMode) ) { | |
| 2355 // Print the exception table for this offset | |
| 2356 _handler_table.print_subtable_for(pc); | |
| 2357 } | |
| 2358 } | |
| 2359 | |
| 2360 if (pcs && n->_idx < pc_limit) | |
| 2361 tty->print_cr("%3.3x", pcs[n->_idx]); | |
| 2362 else | |
| 2363 tty->print_cr(""); | |
| 2364 | |
| 2365 assert(cut_short || delay == NULL, "no unconditional delay branch"); | |
| 2366 | |
| 2367 } // End of per-block dump | |
| 2368 tty->print_cr(""); | |
| 2369 | |
| 2370 if (cut_short) tty->print_cr("*** disassembly is cut short ***"); | |
| 2371 } | |
| 2372 #endif | |
| 2373 | |
| 2374 //------------------------------Final_Reshape_Counts--------------------------- | |
| 2375 // This class defines counters to help identify when a method | |
| 2376 // may/must be executed using hardware with only 24-bit precision. | |
| 2377 struct Final_Reshape_Counts : public StackObj { | |
| 2378 int _call_count; // count non-inlined 'common' calls | |
| 2379 int _float_count; // count float ops requiring 24-bit precision | |
| 2380 int _double_count; // count double ops requiring more precision | |
| 2381 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
|
2382 int _inner_loop_count; // count loops which need alignment |
| 0 | 2383 VectorSet _visited; // Visitation flags |
| 2384 Node_List _tests; // Set of IfNodes & PCTableNodes | |
| 2385 | |
| 2386 Final_Reshape_Counts() : | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2387 _call_count(0), _float_count(0), _double_count(0), |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2388 _java_call_count(0), _inner_loop_count(0), |
| 0 | 2389 _visited( Thread::current()->resource_area() ) { } |
| 2390 | |
| 2391 void inc_call_count () { _call_count ++; } | |
| 2392 void inc_float_count () { _float_count ++; } | |
| 2393 void inc_double_count() { _double_count++; } | |
| 2394 void inc_java_call_count() { _java_call_count++; } | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2395 void inc_inner_loop_count() { _inner_loop_count++; } |
| 0 | 2396 |
| 2397 int get_call_count () const { return _call_count ; } | |
| 2398 int get_float_count () const { return _float_count ; } | |
| 2399 int get_double_count() const { return _double_count; } | |
| 2400 int get_java_call_count() const { return _java_call_count; } | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2401 int get_inner_loop_count() const { return _inner_loop_count; } |
| 0 | 2402 }; |
| 2403 | |
|
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8730
diff
changeset
|
2404 #ifdef ASSERT |
| 0 | 2405 static bool oop_offset_is_sane(const TypeInstPtr* tp) { |
| 2406 ciInstanceKlass *k = tp->klass()->as_instance_klass(); | |
| 2407 // Make sure the offset goes inside the instance layout. | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2408 return k->contains_field_offset(tp->offset()); |
| 0 | 2409 // Note that OffsetBot and OffsetTop are very negative. |
| 2410 } | |
|
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
8730
diff
changeset
|
2411 #endif |
| 0 | 2412 |
|
3248
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2413 // Eliminate trivially redundant StoreCMs and accumulate their |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2414 // precedence edges. |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2415 void Compile::eliminate_redundant_card_marks(Node* n) { |
|
3248
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2416 assert(n->Opcode() == Op_StoreCM, "expected StoreCM"); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2417 if (n->in(MemNode::Address)->outcnt() > 1) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2418 // There are multiple users of the same address so it might be |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2419 // possible to eliminate some of the StoreCMs |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2420 Node* mem = n->in(MemNode::Memory); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2421 Node* adr = n->in(MemNode::Address); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2422 Node* val = n->in(MemNode::ValueIn); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2423 Node* prev = n; |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2424 bool done = false; |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2425 // Walk the chain of StoreCMs eliminating ones that match. As |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2426 // long as it's a chain of single users then the optimization is |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2427 // safe. Eliminating partially redundant StoreCMs would require |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2428 // cloning copies down the other paths. |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2429 while (mem->Opcode() == Op_StoreCM && mem->outcnt() == 1 && !done) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2430 if (adr == mem->in(MemNode::Address) && |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2431 val == mem->in(MemNode::ValueIn)) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2432 // redundant StoreCM |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2433 if (mem->req() > MemNode::OopStore) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2434 // Hasn't been processed by this code yet. |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2435 n->add_prec(mem->in(MemNode::OopStore)); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2436 } else { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2437 // Already converted to precedence edge |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2438 for (uint i = mem->req(); i < mem->len(); i++) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2439 // Accumulate any precedence edges |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2440 if (mem->in(i) != NULL) { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2441 n->add_prec(mem->in(i)); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2442 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2443 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2444 // Everything above this point has been processed. |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2445 done = true; |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2446 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2447 // Eliminate the previous StoreCM |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2448 prev->set_req(MemNode::Memory, mem->in(MemNode::Memory)); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2449 assert(mem->outcnt() == 0, "should be dead"); |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2450 mem->disconnect_inputs(NULL, this); |
|
3248
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2451 } else { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2452 prev = mem; |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2453 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2454 mem = prev->in(MemNode::Memory); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2455 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2456 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2457 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2458 |
| 0 | 2459 //------------------------------final_graph_reshaping_impl---------------------- |
| 2460 // Implement items 1-5 from final_graph_reshaping below. | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2461 void Compile::final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc) { |
| 0 | 2462 |
|
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2463 if ( n->outcnt() == 0 ) return; // dead node |
| 0 | 2464 uint nop = n->Opcode(); |
| 2465 | |
| 2466 // Check for 2-input instruction with "last use" on right input. | |
| 2467 // Swap to left input. Implements item (2). | |
| 2468 if( n->req() == 3 && // two-input instruction | |
| 2469 n->in(1)->outcnt() > 1 && // left use is NOT a last use | |
| 2470 (!n->in(1)->is_Phi() || n->in(1)->in(2) != n) && // it is not data loop | |
| 2471 n->in(2)->outcnt() == 1 &&// right use IS a last use | |
| 2472 !n->in(2)->is_Con() ) { // right use is not a constant | |
| 2473 // Check for commutative opcode | |
| 2474 switch( nop ) { | |
| 2475 case Op_AddI: case Op_AddF: case Op_AddD: case Op_AddL: | |
| 2476 case Op_MaxI: case Op_MinI: | |
| 2477 case Op_MulI: case Op_MulF: case Op_MulD: case Op_MulL: | |
| 2478 case Op_AndL: case Op_XorL: case Op_OrL: | |
| 2479 case Op_AndI: case Op_XorI: case Op_OrI: { | |
| 2480 // Move "last use" input to left by swapping inputs | |
| 2481 n->swap_edges(1, 2); | |
| 2482 break; | |
| 2483 } | |
| 2484 default: | |
| 2485 break; | |
| 2486 } | |
| 2487 } | |
| 2488 | |
| 1609 | 2489 #ifdef ASSERT |
| 2490 if( n->is_Mem() ) { | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2491 int alias_idx = get_alias_index(n->as_Mem()->adr_type()); |
| 1609 | 2492 assert( n->in(0) != NULL || alias_idx != Compile::AliasIdxRaw || |
| 2493 // oop will be recorded in oop map if load crosses safepoint | |
| 2494 n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || | |
| 2495 LoadNode::is_immutable_value(n->in(MemNode::Address))), | |
| 2496 "raw memory operations should have control edge"); | |
| 2497 } | |
| 2498 #endif | |
| 0 | 2499 // Count FPU ops and common calls, implements item (3) |
| 2500 switch( nop ) { | |
| 2501 // Count all float operations that may use FPU | |
| 2502 case Op_AddF: | |
| 2503 case Op_SubF: | |
| 2504 case Op_MulF: | |
| 2505 case Op_DivF: | |
| 2506 case Op_NegF: | |
| 2507 case Op_ModF: | |
| 2508 case Op_ConvI2F: | |
| 2509 case Op_ConF: | |
| 2510 case Op_CmpF: | |
| 2511 case Op_CmpF3: | |
| 2512 // case Op_ConvL2F: // longs are split into 32-bit halves | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2513 frc.inc_float_count(); |
| 0 | 2514 break; |
| 2515 | |
| 2516 case Op_ConvF2D: | |
| 2517 case Op_ConvD2F: | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2518 frc.inc_float_count(); |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2519 frc.inc_double_count(); |
| 0 | 2520 break; |
| 2521 | |
| 2522 // Count all double operations that may use FPU | |
| 2523 case Op_AddD: | |
| 2524 case Op_SubD: | |
| 2525 case Op_MulD: | |
| 2526 case Op_DivD: | |
| 2527 case Op_NegD: | |
| 2528 case Op_ModD: | |
| 2529 case Op_ConvI2D: | |
| 2530 case Op_ConvD2I: | |
| 2531 // case Op_ConvL2D: // handled by leaf call | |
| 2532 // case Op_ConvD2L: // handled by leaf call | |
| 2533 case Op_ConD: | |
| 2534 case Op_CmpD: | |
| 2535 case Op_CmpD3: | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2536 frc.inc_double_count(); |
| 0 | 2537 break; |
| 2538 case Op_Opaque1: // Remove Opaque Nodes before matching | |
| 2539 case Op_Opaque2: // Remove Opaque Nodes before matching | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2540 n->subsume_by(n->in(1), this); |
| 0 | 2541 break; |
| 2542 case Op_CallStaticJava: | |
| 2543 case Op_CallJava: | |
| 2544 case Op_CallDynamicJava: | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2545 frc.inc_java_call_count(); // Count java call site; |
| 0 | 2546 case Op_CallRuntime: |
| 2547 case Op_CallLeaf: | |
| 2548 case Op_CallLeafNoFP: { | |
| 2549 assert( n->is_Call(), "" ); | |
| 2550 CallNode *call = n->as_Call(); | |
| 2551 // Count call sites where the FP mode bit would have to be flipped. | |
| 2552 // Do not count uncommon runtime calls: | |
| 2553 // uncommon_trap, _complete_monitor_locking, _complete_monitor_unlocking, | |
| 2554 // _new_Java, _new_typeArray, _new_objArray, _rethrow_Java, ... | |
| 2555 if( !call->is_CallStaticJava() || !call->as_CallStaticJava()->_name ) { | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2556 frc.inc_call_count(); // Count the call site |
| 0 | 2557 } else { // See if uncommon argument is shared |
| 2558 Node *n = call->in(TypeFunc::Parms); | |
| 2559 int nop = n->Opcode(); | |
| 2560 // Clone shared simple arguments to uncommon calls, item (1). | |
| 2561 if( n->outcnt() > 1 && | |
| 2562 !n->is_Proj() && | |
| 2563 nop != Op_CreateEx && | |
| 2564 nop != Op_CheckCastPP && | |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2565 nop != Op_DecodeN && |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2566 nop != Op_DecodeNKlass && |
| 0 | 2567 !n->is_Mem() ) { |
| 2568 Node *x = n->clone(); | |
| 2569 call->set_req( TypeFunc::Parms, x ); | |
| 2570 } | |
| 2571 } | |
| 2572 break; | |
| 2573 } | |
| 2574 | |
| 2575 case Op_StoreD: | |
| 2576 case Op_LoadD: | |
| 2577 case Op_LoadD_unaligned: | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2578 frc.inc_double_count(); |
| 0 | 2579 goto handle_mem; |
| 2580 case Op_StoreF: | |
| 2581 case Op_LoadF: | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2582 frc.inc_float_count(); |
| 0 | 2583 goto handle_mem; |
| 2584 | |
|
3248
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2585 case Op_StoreCM: |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2586 { |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2587 // Convert OopStore dependence into precedence edge |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2588 Node* prec = n->in(MemNode::OopStore); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2589 n->del_req(MemNode::OopStore); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2590 n->add_prec(prec); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2591 eliminate_redundant_card_marks(n); |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2592 } |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2593 |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2594 // fall through |
|
e6beb62de02d
7032963: StoreCM shouldn't participate in store elimination
never
parents:
2376
diff
changeset
|
2595 |
| 0 | 2596 case Op_StoreB: |
| 2597 case Op_StoreC: | |
| 2598 case Op_StorePConditional: | |
| 2599 case Op_StoreI: | |
| 2600 case Op_StoreL: | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
418
diff
changeset
|
2601 case Op_StoreIConditional: |
| 0 | 2602 case Op_StoreLConditional: |
| 2603 case Op_CompareAndSwapI: | |
| 2604 case Op_CompareAndSwapL: | |
| 2605 case Op_CompareAndSwapP: | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2606 case Op_CompareAndSwapN: |
|
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2607 case Op_GetAndAddI: |
|
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2608 case Op_GetAndAddL: |
|
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2609 case Op_GetAndSetI: |
|
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2610 case Op_GetAndSetL: |
|
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2611 case Op_GetAndSetP: |
|
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6792
diff
changeset
|
2612 case Op_GetAndSetN: |
| 0 | 2613 case Op_StoreP: |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2614 case Op_StoreN: |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2615 case Op_StoreNKlass: |
| 0 | 2616 case Op_LoadB: |
| 624 | 2617 case Op_LoadUB: |
|
558
3b5ac9e7e6ea
6796746: rename LoadC (char) opcode class to LoadUS (unsigned short)
twisti
parents:
492
diff
changeset
|
2618 case Op_LoadUS: |
| 0 | 2619 case Op_LoadI: |
| 2620 case Op_LoadKlass: | |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2621 case Op_LoadNKlass: |
| 0 | 2622 case Op_LoadL: |
| 2623 case Op_LoadL_unaligned: | |
| 2624 case Op_LoadPLocked: | |
| 2625 case Op_LoadP: | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
2626 case Op_LoadN: |
| 0 | 2627 case Op_LoadRange: |
| 2628 case Op_LoadS: { | |
| 2629 handle_mem: | |
| 2630 #ifdef ASSERT | |
| 2631 if( VerifyOptoOopOffsets ) { | |
| 2632 assert( n->is_Mem(), "" ); | |
| 2633 MemNode *mem = (MemNode*)n; | |
| 2634 // Check to see if address types have grounded out somehow. | |
| 2635 const TypeInstPtr *tp = mem->in(MemNode::Address)->bottom_type()->isa_instptr(); | |
| 2636 assert( !tp || oop_offset_is_sane(tp), "" ); | |
| 2637 } | |
| 2638 #endif | |
| 2639 break; | |
| 2640 } | |
| 2641 | |
| 2642 case Op_AddP: { // Assert sane base pointers | |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2643 Node *addp = n->in(AddPNode::Address); |
| 0 | 2644 assert( !addp->is_AddP() || |
| 2645 addp->in(AddPNode::Base)->is_top() || // Top OK for allocation | |
| 2646 addp->in(AddPNode::Base) == n->in(AddPNode::Base), | |
| 2647 "Base pointers must match" ); | |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2648 #ifdef _LP64 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2649 if ((UseCompressedOops || UseCompressedKlassPointers) && |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2650 addp->Opcode() == Op_ConP && |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2651 addp == n->in(AddPNode::Base) && |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2652 n->in(AddPNode::Offset)->is_Con()) { |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2653 // 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
|
2654 // 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
|
2655 // instructions (4) then load 64-bits constant (7). |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2656 // 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
|
2657 const Type* t = addp->bottom_type(); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2658 if (t->isa_oopptr() || t->isa_klassptr()) { |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2659 Node* nn = NULL; |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2660 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2661 int op = t->isa_oopptr() ? Op_ConN : Op_ConNKlass; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2662 |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2663 // 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
|
2664 Node* r = root(); |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2665 uint cnt = r->outcnt(); |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2666 for (uint i = 0; i < cnt; i++) { |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2667 Node* m = r->raw_out(i); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2668 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
|
2669 m->bottom_type()->make_ptr() == t) { |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2670 nn = m; |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2671 break; |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2672 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2673 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2674 if (nn != NULL) { |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2675 // Decode a narrow oop to match address |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2676 // [R12 + narrow_oop_reg<<3 + offset] |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2677 if (t->isa_oopptr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2678 nn = new (this) DecodeNNode(nn, t); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2679 } else { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2680 nn = new (this) DecodeNKlassNode(nn, t); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2681 } |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2682 n->set_req(AddPNode::Base, nn); |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2683 n->set_req(AddPNode::Address, nn); |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2684 if (addp->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2685 addp->disconnect_inputs(NULL, this); |
|
182
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2686 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2687 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2688 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2689 } |
|
44abbb0d4c18
6709093: Compressed Oops: reduce size of compiled methods
kvn
parents:
168
diff
changeset
|
2690 #endif |
| 0 | 2691 break; |
| 2692 } | |
| 2693 | |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2694 #ifdef _LP64 |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2695 case Op_CastPP: |
|
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2696 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
|
2697 Node* in1 = n->in(1); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2698 const Type* t = n->bottom_type(); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2699 Node* new_in1 = in1->clone(); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2700 new_in1->as_DecodeN()->set_type(t); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2701 |
|
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2702 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
|
2703 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2704 // 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
|
2705 // 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
|
2706 // 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
|
2707 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2708 // [R12 + narrow_oop_reg<<3 + offset] |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2709 // NullCheck narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2710 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2711 // 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
|
2712 // 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
|
2713 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2714 // 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
|
2715 // [base_reg + offset] |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2716 // NullCheck base_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2717 // |
| 605 | 2718 // 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
|
2719 // 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
|
2720 // 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
|
2721 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2722 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
|
2723 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2724 |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2725 n->subsume_by(new_in1, this); |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2726 if (in1->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2727 in1->disconnect_inputs(NULL, this); |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2728 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2729 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2730 break; |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2731 |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2732 case Op_CmpP: |
|
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2733 // 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
|
2734 // other TypePtr related Ideal optimizations (for example, ptr nullness). |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2735 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
|
2736 Node* in1 = n->in(1); |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2737 Node* in2 = n->in(2); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2738 if (!in1->is_DecodeNarrowPtr()) { |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2739 in2 = in1; |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2740 in1 = n->in(2); |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2741 } |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2742 assert(in1->is_DecodeNarrowPtr(), "sanity"); |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2743 |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2744 Node* new_in2 = NULL; |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2745 if (in2->is_DecodeNarrowPtr()) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2746 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
|
2747 new_in2 = in2->in(1); |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2748 } else if (in2->Opcode() == Op_ConP) { |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2749 const Type* t = in2->bottom_type(); |
|
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2750 if (t == TypePtr::NULL_PTR) { |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2751 assert(in1->is_DecodeN(), "compare klass to null?"); |
|
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2752 // 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
|
2753 // oops implicit null check is not generated. |
|
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
kvn
parents:
1397
diff
changeset
|
2754 // 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
|
2755 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
|
2756 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
|
2757 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2758 // This transformation together with CastPP transformation above |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2759 // 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
|
2760 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2761 // The original code after Optimize() |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2762 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2763 // LoadN memory, narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2764 // decode narrow_oop_reg, base_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2765 // CmpP base_reg, NULL |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2766 // CastPP base_reg // NotNull |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2767 // Load [base_reg + offset], val_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2768 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2769 // after these transformations will be |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2770 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2771 // LoadN memory, narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2772 // CmpN narrow_oop_reg, NULL |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2773 // 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
|
2774 // Load [base_reg + offset], val_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2775 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2776 // 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
|
2777 // 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
|
2778 // final_graph_reshaping_walk()). |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2779 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2780 // 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
|
2781 // on x86: |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2782 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2783 // Load_narrow_oop memory, narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2784 // 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
|
2785 // NullCheck narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2786 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2787 // and on sparc: |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2788 // |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2789 // Load_narrow_oop memory, narrow_oop_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2790 // 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
|
2791 // Load [base_reg + offset], val_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2792 // NullCheck base_reg |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2793 // |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2794 } else if (t->isa_oopptr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2795 new_in2 = ConNode::make(this, t->make_narrowoop()); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2796 } else if (t->isa_klassptr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2797 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
|
2798 } |
|
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2799 } |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2800 if (new_in2 != NULL) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2801 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
|
2802 n->subsume_by(cmpN, this); |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2803 if (in1->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2804 in1->disconnect_inputs(NULL, this); |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2805 } |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2806 if (in2->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2807 in2->disconnect_inputs(NULL, this); |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
293
diff
changeset
|
2808 } |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2809 } |
|
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2810 } |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
253
diff
changeset
|
2811 break; |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2812 |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2813 case Op_DecodeN: |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2814 case Op_DecodeNKlass: |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2815 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
|
2816 // 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
|
2817 // 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
|
2818 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
|
2819 break; |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2820 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2821 case Op_EncodeP: |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2822 case Op_EncodePKlass: { |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2823 Node* in1 = n->in(1); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2824 if (in1->is_DecodeNarrowPtr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2825 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
|
2826 } else if (in1->Opcode() == Op_ConP) { |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2827 const Type* t = in1->bottom_type(); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2828 if (t == TypePtr::NULL_PTR) { |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2829 assert(t->isa_oopptr(), "null klass?"); |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2830 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
|
2831 } else if (t->isa_oopptr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2832 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
|
2833 } else if (t->isa_klassptr()) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2834 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
|
2835 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2836 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2837 if (in1->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2838 in1->disconnect_inputs(NULL, this); |
|
368
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 break; |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2841 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2842 |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2843 case Op_Proj: { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2844 if (OptimizeStringConcat) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2845 ProjNode* p = n->as_Proj(); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2846 if (p->_is_io_use) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2847 // Separate projections were used for the exception path which |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2848 // 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
|
2849 // then they will hang around and should just be replaced with |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2850 // the original one. |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2851 Node* proj = NULL; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2852 // Replace with just one |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2853 for (SimpleDUIterator i(p->in(0)); i.has_next(); i.next()) { |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2854 Node *use = i.get(); |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2855 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
|
2856 proj = use; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2857 break; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2858 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2859 } |
| 4767 | 2860 assert(proj != NULL, "must be found"); |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2861 p->subsume_by(proj, this); |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2862 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2863 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2864 break; |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2865 } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
929
diff
changeset
|
2866 |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2867 case Op_Phi: |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
2868 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
|
2869 // 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
|
2870 // 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
|
2871 Node* unique_in = n->in(1); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2872 assert(unique_in != NULL, ""); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2873 uint cnt = n->req(); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2874 for (uint i = 2; i < cnt; i++) { |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2875 Node* m = n->in(i); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2876 assert(m != NULL, ""); |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2877 if (unique_in != m) |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2878 unique_in = NULL; |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2879 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2880 if (unique_in != NULL) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2881 n->subsume_by(unique_in, this); |
|
368
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2882 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2883 } |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2884 break; |
|
36ccc817fca4
6747051: Improve code and implicit null check generation for compressed oops
kvn
parents:
367
diff
changeset
|
2885 |
|
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2886 #endif |
|
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
2887 |
| 0 | 2888 case Op_ModI: |
| 2889 if (UseDivMod) { | |
| 2890 // Check if a%b and a/b both exist | |
| 2891 Node* d = n->find_similar(Op_DivI); | |
| 2892 if (d) { | |
| 2893 // Replace them with a fused divmod if supported | |
| 2894 if (Matcher::has_match_rule(Op_DivModI)) { | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2895 DivModINode* divmod = DivModINode::make(this, n); |
|
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2896 d->subsume_by(divmod->div_proj(), this); |
|
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2897 n->subsume_by(divmod->mod_proj(), this); |
| 0 | 2898 } else { |
| 2899 // 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
|
2900 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
|
2901 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
|
2902 n->subsume_by(sub, this); |
| 0 | 2903 } |
| 2904 } | |
| 2905 } | |
| 2906 break; | |
| 2907 | |
| 2908 case Op_ModL: | |
| 2909 if (UseDivMod) { | |
| 2910 // Check if a%b and a/b both exist | |
| 2911 Node* d = n->find_similar(Op_DivL); | |
| 2912 if (d) { | |
| 2913 // Replace them with a fused divmod if supported | |
| 2914 if (Matcher::has_match_rule(Op_DivModL)) { | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2915 DivModLNode* divmod = DivModLNode::make(this, n); |
|
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2916 d->subsume_by(divmod->div_proj(), this); |
|
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2917 n->subsume_by(divmod->mod_proj(), this); |
| 0 | 2918 } else { |
| 2919 // 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
|
2920 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
|
2921 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
|
2922 n->subsume_by(sub, this); |
| 0 | 2923 } |
| 2924 } | |
| 2925 } | |
| 2926 break; | |
| 2927 | |
|
6179
8c92982cbbc4
7119644: Increase superword's vector size up to 256 bits
kvn
parents:
6143
diff
changeset
|
2928 case Op_LoadVector: |
|
8c92982cbbc4
7119644: Increase superword's vector size up to 256 bits
kvn
parents:
6143
diff
changeset
|
2929 case Op_StoreVector: |
| 0 | 2930 break; |
| 2931 | |
| 2932 case Op_PackB: | |
| 2933 case Op_PackS: | |
| 2934 case Op_PackI: | |
| 2935 case Op_PackF: | |
| 2936 case Op_PackL: | |
| 2937 case Op_PackD: | |
| 2938 if (n->req()-1 > 2) { | |
| 2939 // Replace many operand PackNodes with a binary tree for matching | |
| 2940 PackNode* p = (PackNode*) n; | |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2941 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
|
2942 n->subsume_by(btp, this); |
| 0 | 2943 } |
| 2944 break; | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2945 case Op_Loop: |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2946 case Op_CountedLoop: |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2947 if (n->as_Loop()->is_inner_loop()) { |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2948 frc.inc_inner_loop_count(); |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2949 } |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
2950 break; |
|
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2951 case Op_LShiftI: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2952 case Op_RShiftI: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2953 case Op_URShiftI: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2954 case Op_LShiftL: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2955 case Op_RShiftL: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2956 case Op_URShiftL: |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2957 if (Matcher::need_masked_shift_count) { |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2958 // 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
|
2959 // lower 5/6 bits. We need to do the masking ourselves. |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2960 Node* in2 = n->in(2); |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2961 juint mask = (n->bottom_type() == TypeInt::INT) ? (BitsPerInt - 1) : (BitsPerLong - 1); |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2962 const TypeInt* t = in2->find_int_type(); |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2963 if (t != NULL && t->is_con()) { |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2964 juint shift = t->get_con(); |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2965 if (shift > mask) { // Unsigned cmp |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2966 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
|
2967 } |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2968 } else { |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2969 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
|
2970 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
|
2971 n->set_req(2, shift); |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2972 } |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2973 } |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2974 if (in2->outcnt() == 0) { // Remove dead node |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
2975 in2->disconnect_inputs(NULL, this); |
|
2401
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2976 } |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2977 } |
|
7e88bdae86ec
7029017: Additional architecture support for c2 compiler
roland
parents:
2376
diff
changeset
|
2978 break; |
|
8694
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
2979 case Op_MemBarStoreStore: |
| 10278 | 2980 case Op_MemBarRelease: |
|
8694
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
2981 // 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
|
2982 // confuses register allocation. |
|
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
2983 if (n->req() > MemBarNode::Precedent) { |
|
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
2984 n->set_req(MemBarNode::Precedent, top()); |
|
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
roland
parents:
8691
diff
changeset
|
2985 } |
|
8651f608fea4
8009460: C2compiler crash in machnode::in_regmask(unsigned int)
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8691
diff
changeset
|
2986 break; |
| 0 | 2987 default: |
| 2988 assert( !n->is_Call(), "" ); | |
| 2989 assert( !n->is_Mem(), "" ); | |
| 2990 break; | |
| 2991 } | |
| 127 | 2992 |
| 2993 // Collect CFG split points | |
| 2994 if (n->is_MultiBranch()) | |
|
859
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diff
changeset
|
2995 frc._tests.push(n); |
| 0 | 2996 } |
| 2997 | |
| 2998 //------------------------------final_graph_reshaping_walk--------------------- | |
| 2999 // Replacing Opaque nodes with their input in final_graph_reshaping_impl(), | |
| 3000 // 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
|
3001 void Compile::final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ) { |
|
331
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|
3002 ResourceArea *area = Thread::current()->resource_area(); |
|
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|
3003 Unique_Node_List sfpt(area); |
|
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|
3004 |
|
859
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diff
changeset
|
3005 frc._visited.set(root->_idx); // first, mark node as visited |
| 0 | 3006 uint cnt = root->req(); |
| 3007 Node *n = root; | |
| 3008 uint i = 0; | |
| 3009 while (true) { | |
| 3010 if (i < cnt) { | |
| 3011 // Place all non-visited non-null inputs onto stack | |
| 3012 Node* m = n->in(i); | |
| 3013 ++i; | |
|
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|
3014 if (m != NULL && !frc._visited.test_set(m->_idx)) { |
|
331
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|
3015 if (m->is_SafePoint() && m->as_SafePoint()->jvms() != NULL) |
|
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|
3016 sfpt.push(m); |
| 0 | 3017 cnt = m->req(); |
| 3018 nstack.push(n, i); // put on stack parent and next input's index | |
| 3019 n = m; | |
| 3020 i = 0; | |
| 3021 } | |
| 3022 } else { | |
| 3023 // Now do post-visit work | |
|
859
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diff
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|
3024 final_graph_reshaping_impl( n, frc ); |
| 0 | 3025 if (nstack.is_empty()) |
| 3026 break; // finished | |
| 3027 n = nstack.node(); // Get node from stack | |
| 3028 cnt = n->req(); | |
| 3029 i = nstack.index(); | |
| 3030 nstack.pop(); // Shift to the next node on stack | |
| 3031 } | |
| 3032 } | |
|
331
cecd8eb4e0ca
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|
3033 |
|
1575
3657cb01ffc5
6954029: Improve implicit null check generation with compressed oops
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parents:
1397
diff
changeset
|
3034 // Skip next transformation if compressed oops are not used. |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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parents:
6843
diff
changeset
|
3035 if ((UseCompressedOops && !Matcher::gen_narrow_oop_implicit_null_checks()) || |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6843
diff
changeset
|
3036 (!UseCompressedOops && !UseCompressedKlassPointers)) |
|
1575
3657cb01ffc5
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parents:
1397
diff
changeset
|
3037 return; |
|
3657cb01ffc5
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parents:
1397
diff
changeset
|
3038 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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diff
changeset
|
3039 // Go over safepoints nodes to skip DecodeN/DecodeNKlass nodes for debug edges. |
|
331
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|
3040 // It could be done for an uncommon traps or any safepoints/calls |
|
6848
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diff
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|
3041 // if the DecodeN/DecodeNKlass node is referenced only in a debug info. |
|
331
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|
3042 while (sfpt.size() > 0) { |
|
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diff
changeset
|
3043 n = sfpt.pop(); |
|
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changeset
|
3044 JVMState *jvms = n->as_SafePoint()->jvms(); |
|
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|
3045 assert(jvms != NULL, "sanity"); |
|
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diff
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|
3046 int start = jvms->debug_start(); |
|
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diff
changeset
|
3047 int end = n->req(); |
|
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diff
changeset
|
3048 bool is_uncommon = (n->is_CallStaticJava() && |
|
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|
3049 n->as_CallStaticJava()->uncommon_trap_request() != 0); |
|
cecd8eb4e0ca
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diff
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|
3050 for (int j = start; j < end; j++) { |
|
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diff
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|
3051 Node* in = n->in(j); |
|
6848
8e47bac5643a
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6843
diff
changeset
|
3052 if (in->is_DecodeNarrowPtr()) { |
|
331
cecd8eb4e0ca
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diff
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|
3053 bool safe_to_skip = true; |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
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diff
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|
3054 if (!is_uncommon ) { |
|
cecd8eb4e0ca
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kvn
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diff
changeset
|
3055 // Is it safe to skip? |
|
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diff
changeset
|
3056 for (uint i = 0; i < in->outcnt(); i++) { |
|
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diff
changeset
|
3057 Node* u = in->raw_out(i); |
|
cecd8eb4e0ca
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diff
changeset
|
3058 if (!u->is_SafePoint() || |
|
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diff
changeset
|
3059 u->is_Call() && u->as_Call()->has_non_debug_use(n)) { |
|
cecd8eb4e0ca
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diff
changeset
|
3060 safe_to_skip = false; |
|
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kvn
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diff
changeset
|
3061 } |
|
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3062 } |
|
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3063 } |
|
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3064 if (safe_to_skip) { |
|
cecd8eb4e0ca
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kvn
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diff
changeset
|
3065 n->set_req(j, in->in(1)); |
|
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kvn
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diff
changeset
|
3066 } |
|
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3067 if (in->outcnt() == 0) { |
|
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6888
diff
changeset
|
3068 in->disconnect_inputs(NULL, this); |
|
331
cecd8eb4e0ca
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diff
changeset
|
3069 } |
|
cecd8eb4e0ca
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kvn
parents:
293
diff
changeset
|
3070 } |
|
cecd8eb4e0ca
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kvn
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diff
changeset
|
3071 } |
|
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|
3072 } |
| 0 | 3073 } |
| 3074 | |
| 3075 //------------------------------final_graph_reshaping-------------------------- | |
| 3076 // Final Graph Reshaping. | |
| 3077 // | |
| 3078 // (1) Clone simple inputs to uncommon calls, so they can be scheduled late | |
| 3079 // and not commoned up and forced early. Must come after regular | |
| 3080 // optimizations to avoid GVN undoing the cloning. Clone constant | |
| 3081 // inputs to Loop Phis; these will be split by the allocator anyways. | |
| 3082 // Remove Opaque nodes. | |
| 3083 // (2) Move last-uses by commutative operations to the left input to encourage | |
| 3084 // Intel update-in-place two-address operations and better register usage | |
| 3085 // on RISCs. Must come after regular optimizations to avoid GVN Ideal | |
| 3086 // calls canonicalizing them back. | |
| 3087 // (3) Count the number of double-precision FP ops, single-precision FP ops | |
| 3088 // and call sites. On Intel, we can get correct rounding either by | |
| 3089 // forcing singles to memory (requires extra stores and loads after each | |
| 3090 // FP bytecode) or we can set a rounding mode bit (requires setting and | |
| 3091 // clearing the mode bit around call sites). The mode bit is only used | |
| 3092 // if the relative frequency of single FP ops to calls is low enough. | |
| 3093 // This is a key transform for SPEC mpeg_audio. | |
| 3094 // (4) Detect infinite loops; blobs of code reachable from above but not | |
| 3095 // below. Several of the Code_Gen algorithms fail on such code shapes, | |
| 3096 // so we simply bail out. Happens a lot in ZKM.jar, but also happens | |
| 3097 // from time to time in other codes (such as -Xcomp finalizer loops, etc). | |
| 3098 // Detection is by looking for IfNodes where only 1 projection is | |
| 3099 // reachable from below or CatchNodes missing some targets. | |
| 3100 // (5) Assert for insane oop offsets in debug mode. | |
| 3101 | |
| 3102 bool Compile::final_graph_reshaping() { | |
| 3103 // an infinite loop may have been eliminated by the optimizer, | |
| 3104 // in which case the graph will be empty. | |
| 3105 if (root()->req() == 1) { | |
| 3106 record_method_not_compilable("trivial infinite loop"); | |
| 3107 return true; | |
| 3108 } | |
| 3109 | |
|
8048
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3110 // Expensive nodes have their control input set to prevent the GVN |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3111 // from freely commoning them. There's no GVN beyond this point so |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3112 // no need to keep the control input. We want the expensive nodes to |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3113 // be freely moved to the least frequent code path by gcm. |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3114 assert(OptimizeExpensiveOps || expensive_count() == 0, "optimization off but list non empty?"); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3115 for (int i = 0; i < expensive_count(); i++) { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3116 _expensive_nodes->at(i)->set_req(0, NULL); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3117 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3118 |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3119 Final_Reshape_Counts frc; |
| 0 | 3120 |
| 3121 // Visit everybody reachable! | |
| 3122 // Allocate stack of size C->unique()/2 to avoid frequent realloc | |
| 3123 Node_Stack nstack(unique() >> 1); | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3124 final_graph_reshaping_walk(nstack, root(), frc); |
| 0 | 3125 |
| 3126 // Check for unreachable (from below) code (i.e., infinite loops). | |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3127 for( uint i = 0; i < frc._tests.size(); i++ ) { |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
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856
diff
changeset
|
3128 MultiBranchNode *n = frc._tests[i]->as_MultiBranch(); |
| 127 | 3129 // Get number of CFG targets. |
| 0 | 3130 // Note that PCTables include exception targets after calls. |
| 127 | 3131 uint required_outcnt = n->required_outcnt(); |
| 3132 if (n->outcnt() != required_outcnt) { | |
| 0 | 3133 // Check for a few special cases. Rethrow Nodes never take the |
| 3134 // 'fall-thru' path, so expected kids is 1 less. | |
| 3135 if (n->is_PCTable() && n->in(0) && n->in(0)->in(0)) { | |
| 3136 if (n->in(0)->in(0)->is_Call()) { | |
| 3137 CallNode *call = n->in(0)->in(0)->as_Call(); | |
| 3138 if (call->entry_point() == OptoRuntime::rethrow_stub()) { | |
| 127 | 3139 required_outcnt--; // Rethrow always has 1 less kid |
| 0 | 3140 } else if (call->req() > TypeFunc::Parms && |
| 3141 call->is_CallDynamicJava()) { | |
| 3142 // Check for null receiver. In such case, the optimizer has | |
| 3143 // detected that the virtual call will always result in a null | |
| 3144 // pointer exception. The fall-through projection of this CatchNode | |
| 3145 // will not be populated. | |
| 3146 Node *arg0 = call->in(TypeFunc::Parms); | |
| 3147 if (arg0->is_Type() && | |
| 3148 arg0->as_Type()->type()->higher_equal(TypePtr::NULL_PTR)) { | |
| 127 | 3149 required_outcnt--; |
| 0 | 3150 } |
| 3151 } else if (call->entry_point() == OptoRuntime::new_array_Java() && | |
| 3152 call->req() > TypeFunc::Parms+1 && | |
| 3153 call->is_CallStaticJava()) { | |
| 3154 // Check for negative array length. In such case, the optimizer has | |
| 3155 // detected that the allocation attempt will always result in an | |
| 3156 // exception. There is no fall-through projection of this CatchNode . | |
| 3157 Node *arg1 = call->in(TypeFunc::Parms+1); | |
| 3158 if (arg1->is_Type() && | |
| 3159 arg1->as_Type()->type()->join(TypeInt::POS)->empty()) { | |
| 127 | 3160 required_outcnt--; |
| 0 | 3161 } |
| 3162 } | |
| 3163 } | |
| 3164 } | |
| 127 | 3165 // Recheck with a better notion of 'required_outcnt' |
| 3166 if (n->outcnt() != required_outcnt) { | |
| 0 | 3167 record_method_not_compilable("malformed control flow"); |
| 3168 return true; // Not all targets reachable! | |
| 3169 } | |
| 3170 } | |
| 3171 // Check that I actually visited all kids. Unreached kids | |
| 3172 // must be infinite loops. | |
| 3173 for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) | |
|
859
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kvn
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856
diff
changeset
|
3174 if (!frc._visited.test(n->fast_out(j)->_idx)) { |
| 0 | 3175 record_method_not_compilable("infinite loop"); |
| 3176 return true; // Found unvisited kid; must be unreach | |
| 3177 } | |
| 3178 } | |
| 3179 | |
| 3180 // If original bytecodes contained a mixture of floats and doubles | |
| 3181 // check if the optimizer has made it homogenous, item (3). | |
|
929
cd18bd5e667c
6873777: FPU control word optimization still performed with SSE
never
parents:
921
diff
changeset
|
3182 if( Use24BitFPMode && Use24BitFP && UseSSE == 0 && |
|
859
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3183 frc.get_float_count() > 32 && |
|
ea3f9723b5cf
6860599: nodes limit could be reached during Output phase
kvn
parents:
856
diff
changeset
|
3184 frc.get_double_count() == 0 && |
|
ea3f9723b5cf
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kvn
parents:
856
diff
changeset
|
3185 (10 * frc.get_call_count() < frc.get_float_count()) ) { |
| 0 | 3186 set_24_bit_selection_and_mode( false, true ); |
| 3187 } | |
| 3188 | |
|
859
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6860599: nodes limit could be reached during Output phase
kvn
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856
diff
changeset
|
3189 set_java_calls(frc.get_java_call_count()); |
|
ea3f9723b5cf
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kvn
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856
diff
changeset
|
3190 set_inner_loops(frc.get_inner_loop_count()); |
| 0 | 3191 |
| 3192 // No infinite loops, no reason to bail out. | |
| 3193 return false; | |
| 3194 } | |
| 3195 | |
| 3196 //-----------------------------too_many_traps---------------------------------- | |
| 3197 // Report if there are too many traps at the current method and bci. | |
| 3198 // Return true if there was a trap, and/or PerMethodTrapLimit is exceeded. | |
| 3199 bool Compile::too_many_traps(ciMethod* method, | |
| 3200 int bci, | |
| 3201 Deoptimization::DeoptReason reason) { | |
| 3202 ciMethodData* md = method->method_data(); | |
| 3203 if (md->is_empty()) { | |
| 3204 // Assume the trap has not occurred, or that it occurred only | |
| 3205 // because of a transient condition during start-up in the interpreter. | |
| 3206 return false; | |
| 3207 } | |
| 3208 if (md->has_trap_at(bci, reason) != 0) { | |
| 3209 // Assume PerBytecodeTrapLimit==0, for a more conservative heuristic. | |
| 3210 // Also, if there are multiple reasons, or if there is no per-BCI record, | |
| 3211 // assume the worst. | |
| 3212 if (log()) | |
| 3213 log()->elem("observe trap='%s' count='%d'", | |
| 3214 Deoptimization::trap_reason_name(reason), | |
| 3215 md->trap_count(reason)); | |
| 3216 return true; | |
| 3217 } else { | |
| 3218 // Ignore method/bci and see if there have been too many globally. | |
| 3219 return too_many_traps(reason, md); | |
| 3220 } | |
| 3221 } | |
| 3222 | |
| 3223 // Less-accurate variant which does not require a method and bci. | |
| 3224 bool Compile::too_many_traps(Deoptimization::DeoptReason reason, | |
| 3225 ciMethodData* logmd) { | |
| 3226 if (trap_count(reason) >= (uint)PerMethodTrapLimit) { | |
| 3227 // Too many traps globally. | |
| 3228 // Note that we use cumulative trap_count, not just md->trap_count. | |
| 3229 if (log()) { | |
| 3230 int mcount = (logmd == NULL)? -1: (int)logmd->trap_count(reason); | |
| 3231 log()->elem("observe trap='%s' count='0' mcount='%d' ccount='%d'", | |
| 3232 Deoptimization::trap_reason_name(reason), | |
| 3233 mcount, trap_count(reason)); | |
| 3234 } | |
| 3235 return true; | |
| 3236 } else { | |
| 3237 // The coast is clear. | |
| 3238 return false; | |
| 3239 } | |
| 3240 } | |
| 3241 | |
| 3242 //--------------------------too_many_recompiles-------------------------------- | |
| 3243 // Report if there are too many recompiles at the current method and bci. | |
| 3244 // Consults PerBytecodeRecompilationCutoff and PerMethodRecompilationCutoff. | |
| 3245 // Is not eager to return true, since this will cause the compiler to use | |
| 3246 // Action_none for a trap point, to avoid too many recompilations. | |
| 3247 bool Compile::too_many_recompiles(ciMethod* method, | |
| 3248 int bci, | |
| 3249 Deoptimization::DeoptReason reason) { | |
| 3250 ciMethodData* md = method->method_data(); | |
| 3251 if (md->is_empty()) { | |
| 3252 // Assume the trap has not occurred, or that it occurred only | |
| 3253 // because of a transient condition during start-up in the interpreter. | |
| 3254 return false; | |
| 3255 } | |
| 3256 // Pick a cutoff point well within PerBytecodeRecompilationCutoff. | |
| 3257 uint bc_cutoff = (uint) PerBytecodeRecompilationCutoff / 8; | |
| 3258 uint m_cutoff = (uint) PerMethodRecompilationCutoff / 2 + 1; // not zero | |
| 3259 Deoptimization::DeoptReason per_bc_reason | |
| 3260 = Deoptimization::reason_recorded_per_bytecode_if_any(reason); | |
| 3261 if ((per_bc_reason == Deoptimization::Reason_none | |
| 3262 || md->has_trap_at(bci, reason) != 0) | |
| 3263 // The trap frequency measure we care about is the recompile count: | |
| 3264 && md->trap_recompiled_at(bci) | |
| 3265 && md->overflow_recompile_count() >= bc_cutoff) { | |
| 3266 // Do not emit a trap here if it has already caused recompilations. | |
| 3267 // Also, if there are multiple reasons, or if there is no per-BCI record, | |
| 3268 // assume the worst. | |
| 3269 if (log()) | |
| 3270 log()->elem("observe trap='%s recompiled' count='%d' recompiles2='%d'", | |
| 3271 Deoptimization::trap_reason_name(reason), | |
| 3272 md->trap_count(reason), | |
| 3273 md->overflow_recompile_count()); | |
| 3274 return true; | |
| 3275 } else if (trap_count(reason) != 0 | |
| 3276 && decompile_count() >= m_cutoff) { | |
| 3277 // Too many recompiles globally, and we have seen this sort of trap. | |
| 3278 // Use cumulative decompile_count, not just md->decompile_count. | |
| 3279 if (log()) | |
| 3280 log()->elem("observe trap='%s' count='%d' mcount='%d' decompiles='%d' mdecompiles='%d'", | |
| 3281 Deoptimization::trap_reason_name(reason), | |
| 3282 md->trap_count(reason), trap_count(reason), | |
| 3283 md->decompile_count(), decompile_count()); | |
| 3284 return true; | |
| 3285 } else { | |
| 3286 // The coast is clear. | |
| 3287 return false; | |
| 3288 } | |
| 3289 } | |
| 3290 | |
| 3291 | |
| 3292 #ifndef PRODUCT | |
| 3293 //------------------------------verify_graph_edges--------------------------- | |
| 3294 // Walk the Graph and verify that there is a one-to-one correspondence | |
| 3295 // between Use-Def edges and Def-Use edges in the graph. | |
| 3296 void Compile::verify_graph_edges(bool no_dead_code) { | |
| 3297 if (VerifyGraphEdges) { | |
| 3298 ResourceArea *area = Thread::current()->resource_area(); | |
| 3299 Unique_Node_List visited(area); | |
| 3300 // Call recursive graph walk to check edges | |
| 3301 _root->verify_edges(visited); | |
| 3302 if (no_dead_code) { | |
| 3303 // Now make sure that no visited node is used by an unvisited node. | |
| 3304 bool dead_nodes = 0; | |
| 3305 Unique_Node_List checked(area); | |
| 3306 while (visited.size() > 0) { | |
| 3307 Node* n = visited.pop(); | |
| 3308 checked.push(n); | |
| 3309 for (uint i = 0; i < n->outcnt(); i++) { | |
| 3310 Node* use = n->raw_out(i); | |
| 3311 if (checked.member(use)) continue; // already checked | |
| 3312 if (visited.member(use)) continue; // already in the graph | |
| 3313 if (use->is_Con()) continue; // a dead ConNode is OK | |
| 3314 // At this point, we have found a dead node which is DU-reachable. | |
| 3315 if (dead_nodes++ == 0) | |
| 3316 tty->print_cr("*** Dead nodes reachable via DU edges:"); | |
| 3317 use->dump(2); | |
| 3318 tty->print_cr("---"); | |
| 3319 checked.push(use); // No repeats; pretend it is now checked. | |
| 3320 } | |
| 3321 } | |
| 3322 assert(dead_nodes == 0, "using nodes must be reachable from root"); | |
| 3323 } | |
| 3324 } | |
| 3325 } | |
| 3326 #endif | |
| 3327 | |
| 3328 // The Compile object keeps track of failure reasons separately from the ciEnv. | |
| 3329 // This is required because there is not quite a 1-1 relation between the | |
| 3330 // ciEnv and its compilation task and the Compile object. Note that one | |
| 3331 // ciEnv might use two Compile objects, if C2Compiler::compile_method decides | |
| 3332 // to backtrack and retry without subsuming loads. Other than this backtracking | |
| 3333 // behavior, the Compile's failure reason is quietly copied up to the ciEnv | |
| 3334 // by the logic in C2Compiler. | |
| 3335 void Compile::record_failure(const char* reason) { | |
| 3336 if (log() != NULL) { | |
| 3337 log()->elem("failure reason='%s' phase='compile'", reason); | |
| 3338 } | |
| 3339 if (_failure_reason == NULL) { | |
| 3340 // Record the first failure reason. | |
| 3341 _failure_reason = reason; | |
| 3342 } | |
| 10405 | 3343 |
| 3344 EventCompilerFailure event; | |
| 3345 if (event.should_commit()) { | |
| 3346 event.set_compileID(Compile::compile_id()); | |
| 3347 event.set_failure(reason); | |
| 3348 event.commit(); | |
| 3349 } | |
| 3350 | |
| 222 | 3351 if (!C->failure_reason_is(C2Compiler::retry_no_subsuming_loads())) { |
| 10405 | 3352 C->print_method(PHASE_FAILURE); |
| 222 | 3353 } |
| 0 | 3354 _root = NULL; // flush the graph, too |
| 3355 } | |
| 3356 | |
| 3357 Compile::TracePhase::TracePhase(const char* name, elapsedTimer* accumulator, bool dolog) | |
|
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3358 : TraceTime(NULL, accumulator, false NOT_PRODUCT( || TimeCompiler ), false), |
|
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|
3359 _phase_name(name), _dolog(dolog) |
| 0 | 3360 { |
| 3361 if (dolog) { | |
| 3362 C = Compile::current(); | |
| 3363 _log = C->log(); | |
| 3364 } else { | |
| 3365 C = NULL; | |
| 3366 _log = NULL; | |
| 3367 } | |
| 3368 if (_log != NULL) { | |
|
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3369 _log->begin_head("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
| 0 | 3370 _log->stamp(); |
| 3371 _log->end_head(); | |
| 3372 } | |
| 3373 } | |
| 3374 | |
| 3375 Compile::TracePhase::~TracePhase() { | |
|
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3376 |
|
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|
3377 C = Compile::current(); |
|
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|
3378 if (_dolog) { |
|
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|
3379 _log = C->log(); |
|
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|
3380 } else { |
|
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|
3381 _log = NULL; |
|
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|
3382 } |
|
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|
3383 |
|
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|
3384 #ifdef ASSERT |
|
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|
3385 if (PrintIdealNodeCount) { |
|
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|
3386 tty->print_cr("phase name='%s' nodes='%d' live='%d' live_graph_walk='%d'", |
|
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|
3387 _phase_name, C->unique(), C->live_nodes(), C->count_live_nodes_by_graph_walk()); |
|
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|
3388 } |
|
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|
3389 |
|
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|
3390 if (VerifyIdealNodeCount) { |
|
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|
3391 Compile::current()->print_missing_nodes(); |
|
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|
3392 } |
|
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|
3393 #endif |
|
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|
3394 |
| 0 | 3395 if (_log != NULL) { |
|
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|
3396 _log->done("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
| 0 | 3397 } |
| 3398 } | |
| 2008 | 3399 |
| 3400 //============================================================================= | |
| 3401 // Two Constant's are equal when the type and the value are equal. | |
| 3402 bool Compile::Constant::operator==(const Constant& other) { | |
| 3403 if (type() != other.type() ) return false; | |
| 3404 if (can_be_reused() != other.can_be_reused()) return false; | |
| 3405 // For floating point values we compare the bit pattern. | |
| 3406 switch (type()) { | |
|
6725
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|
3407 case T_FLOAT: return (_v._value.i == other._v._value.i); |
| 2008 | 3408 case T_LONG: |
|
6725
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3409 case T_DOUBLE: return (_v._value.j == other._v._value.j); |
| 2008 | 3410 case T_OBJECT: |
|
6725
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3411 case T_ADDRESS: return (_v._value.l == other._v._value.l); |
|
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3412 case T_VOID: return (_v._value.l == other._v._value.l); // jump-table entries |
|
6888
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8000623: tools/javac/Diagnostics/6769027/T6769027.java crashes in PSPromotionManager::copy_to_survivor_space
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|
3413 case T_METADATA: return (_v._metadata == other._v._metadata); |
| 2008 | 3414 default: ShouldNotReachHere(); |
| 3415 } | |
| 3416 return false; | |
| 3417 } | |
| 3418 | |
| 3419 static int type_to_size_in_bytes(BasicType t) { | |
| 3420 switch (t) { | |
| 3421 case T_LONG: return sizeof(jlong ); | |
| 3422 case T_FLOAT: return sizeof(jfloat ); | |
| 3423 case T_DOUBLE: return sizeof(jdouble); | |
|
6725
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|
3424 case T_METADATA: return sizeof(Metadata*); |
| 2008 | 3425 // We use T_VOID as marker for jump-table entries (labels) which |
|
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|
3426 // need an internal word relocation. |
| 2008 | 3427 case T_VOID: |
| 3428 case T_ADDRESS: | |
| 3429 case T_OBJECT: return sizeof(jobject); | |
| 3430 } | |
| 3431 | |
| 3432 ShouldNotReachHere(); | |
| 3433 return -1; | |
| 3434 } | |
| 3435 | |
|
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|
3436 int Compile::ConstantTable::qsort_comparator(Constant* a, Constant* b) { |
|
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|
3437 // sort descending |
|
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|
3438 if (a->freq() > b->freq()) return -1; |
|
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|
3439 if (a->freq() < b->freq()) return 1; |
|
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|
3440 return 0; |
|
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|
3441 } |
|
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|
3442 |
| 2008 | 3443 void Compile::ConstantTable::calculate_offsets_and_size() { |
|
4114
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|
3444 // First, sort the array by frequencies. |
|
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|
3445 _constants.sort(qsort_comparator); |
|
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|
3446 |
|
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|
3447 #ifdef ASSERT |
|
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|
3448 // Make sure all jump-table entries were sorted to the end of the |
|
6729bbc1fcd6
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|
3449 // array (they have a negative frequency). |
|
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7003454: order constants in constant table by number of references in code
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|
3450 bool found_void = false; |
|
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7003454: order constants in constant table by number of references in code
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|
3451 for (int i = 0; i < _constants.length(); i++) { |
|
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|
3452 Constant con = _constants.at(i); |
|
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|
3453 if (con.type() == T_VOID) |
|
6729bbc1fcd6
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|
3454 found_void = true; // jump-tables |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
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|
3455 else |
|
6729bbc1fcd6
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|
3456 assert(!found_void, "wrong sorting"); |
|
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7003454: order constants in constant table by number of references in code
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|
3457 } |
|
6729bbc1fcd6
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|
3458 #endif |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
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|
3459 |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
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|
3460 int offset = 0; |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
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changeset
|
3461 for (int i = 0; i < _constants.length(); i++) { |
|
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7003454: order constants in constant table by number of references in code
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|
3462 Constant* con = _constants.adr_at(i); |
|
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7003454: order constants in constant table by number of references in code
twisti
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|
3463 |
|
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changeset
|
3464 // Align offset for type. |
|
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7003454: order constants in constant table by number of references in code
twisti
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changeset
|
3465 int typesize = type_to_size_in_bytes(con->type()); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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changeset
|
3466 offset = align_size_up(offset, typesize); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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changeset
|
3467 con->set_offset(offset); // set constant's offset |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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|
3468 |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
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changeset
|
3469 if (con->type() == T_VOID) { |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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changeset
|
3470 MachConstantNode* n = (MachConstantNode*) con->get_jobject(); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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changeset
|
3471 offset = offset + typesize * n->outcnt(); // expand jump-table |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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4064
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changeset
|
3472 } else { |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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diff
changeset
|
3473 offset = offset + typesize; |
| 2008 | 3474 } |
| 3475 } | |
| 3476 | |
| 3477 // Align size up to the next section start (which is insts; see | |
| 3478 // CodeBuffer::align_at_start). | |
| 3479 assert(_size == -1, "already set?"); | |
|
4114
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|
3480 _size = align_size_up(offset, CodeEntryAlignment); |
| 2008 | 3481 } |
| 3482 | |
| 3483 void Compile::ConstantTable::emit(CodeBuffer& cb) { | |
| 3484 MacroAssembler _masm(&cb); | |
|
4114
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twisti
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|
3485 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
|
3486 Constant con = _constants.at(i); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
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diff
changeset
|
3487 address constant_addr; |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3488 switch (con.type()) { |
|
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7003454: order constants in constant table by number of references in code
twisti
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4064
diff
changeset
|
3489 case T_LONG: constant_addr = _masm.long_constant( con.get_jlong() ); break; |
|
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twisti
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changeset
|
3490 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
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changeset
|
3491 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
|
3492 case T_OBJECT: { |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3493 jobject obj = con.get_jobject(); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3494 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
|
3495 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
|
3496 break; |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3497 } |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3498 case T_ADDRESS: { |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3499 address addr = (address) con.get_jobject(); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3500 constant_addr = _masm.address_constant(addr); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3501 break; |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3502 } |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3503 // 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
|
3504 // need an internal word relocation. |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3505 case T_VOID: { |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3506 MachConstantNode* n = (MachConstantNode*) con.get_jobject(); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3507 // 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
|
3508 // 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
|
3509 address dummy = (address) n; |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3510 constant_addr = _masm.address_constant(dummy); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3511 // Expand jump-table |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3512 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
|
3513 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
|
3514 assert(temp_addr, "consts section too small"); |
| 2008 | 3515 } |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3516 break; |
| 2008 | 3517 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3518 case T_METADATA: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3519 Metadata* obj = con.get_metadata(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3520 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
|
3521 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
|
3522 break; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3523 } |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3524 default: ShouldNotReachHere(); |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3525 } |
|
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3526 assert(constant_addr, "consts section too small"); |
|
6268
6c5b7a6becc8
7187454: stack overflow in C2 compiler thread on Solaris x86
kvn
parents:
6179
diff
changeset
|
3527 assert((constant_addr - _masm.code()->consts()->start()) == con.offset(), err_msg_res("must be: %d == %d", constant_addr - _masm.code()->consts()->start(), con.offset())); |
| 2008 | 3528 } |
| 3529 } | |
| 3530 | |
| 3531 int Compile::ConstantTable::find_offset(Constant& con) const { | |
| 3532 int idx = _constants.find(con); | |
| 3533 assert(idx != -1, "constant must be in constant table"); | |
| 3534 int offset = _constants.at(idx).offset(); | |
| 3535 assert(offset != -1, "constant table not emitted yet?"); | |
| 3536 return offset; | |
| 3537 } | |
| 3538 | |
| 3539 void Compile::ConstantTable::add(Constant& con) { | |
| 3540 if (con.can_be_reused()) { | |
| 3541 int idx = _constants.find(con); | |
| 3542 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
|
3543 _constants.adr_at(idx)->inc_freq(con.freq()); // increase the frequency by the current value |
| 2008 | 3544 return; |
| 3545 } | |
| 3546 } | |
| 3547 (void) _constants.append(con); | |
| 3548 } | |
| 3549 | |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3550 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
|
3551 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
|
3552 Constant con(type, value, b->_freq); |
| 2008 | 3553 add(con); |
| 3554 return con; | |
| 3555 } | |
| 3556 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3557 Compile::Constant Compile::ConstantTable::add(Metadata* metadata) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3558 Constant con(metadata); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3559 add(con); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3560 return con; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3561 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6619
diff
changeset
|
3562 |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3563 Compile::Constant Compile::ConstantTable::add(MachConstantNode* n, MachOper* oper) { |
| 2008 | 3564 jvalue value; |
| 3565 BasicType type = oper->type()->basic_type(); | |
| 3566 switch (type) { | |
| 3567 case T_LONG: value.j = oper->constantL(); break; | |
| 3568 case T_FLOAT: value.f = oper->constantF(); break; | |
| 3569 case T_DOUBLE: value.d = oper->constantD(); break; | |
| 3570 case T_OBJECT: | |
| 3571 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
|
3572 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
|
3573 default: guarantee(false, err_msg_res("unhandled type: %s", type2name(type))); |
| 2008 | 3574 } |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3575 return add(n, type, value); |
| 2008 | 3576 } |
| 3577 | |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3578 Compile::Constant Compile::ConstantTable::add_jump_table(MachConstantNode* n) { |
| 2008 | 3579 jvalue value; |
| 3580 // We can use the node pointer here to identify the right jump-table | |
| 3581 // as this method is called from Compile::Fill_buffer right before | |
| 3582 // the MachNodes are emitted and the jump-table is filled (means the | |
| 3583 // MachNode pointers do not change anymore). | |
| 3584 value.l = (jobject) n; | |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3585 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
|
3586 add(con); |
| 2008 | 3587 return con; |
| 3588 } | |
| 3589 | |
| 3590 void Compile::ConstantTable::fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const { | |
| 3591 // If called from Compile::scratch_emit_size do nothing. | |
| 3592 if (Compile::current()->in_scratch_emit_size()) return; | |
| 3593 | |
| 3594 assert(labels.is_nonempty(), "must be"); | |
|
6268
6c5b7a6becc8
7187454: stack overflow in C2 compiler thread on Solaris x86
kvn
parents:
6179
diff
changeset
|
3595 assert((uint) labels.length() == n->outcnt(), err_msg_res("must be equal: %d == %d", labels.length(), n->outcnt())); |
| 2008 | 3596 |
| 3597 // Since MachConstantNode::constant_offset() also contains | |
| 3598 // table_base_offset() we need to subtract the table_base_offset() | |
| 3599 // to get the plain offset into the constant table. | |
| 3600 int offset = n->constant_offset() - table_base_offset(); | |
| 3601 | |
| 3602 MacroAssembler _masm(&cb); | |
| 3603 address* jump_table_base = (address*) (_masm.code()->consts()->start() + offset); | |
| 3604 | |
|
4114
6729bbc1fcd6
7003454: order constants in constant table by number of references in code
twisti
parents:
4064
diff
changeset
|
3605 for (uint i = 0; i < n->outcnt(); i++) { |
| 2008 | 3606 address* constant_addr = &jump_table_base[i]; |
|
6268
6c5b7a6becc8
7187454: stack overflow in C2 compiler thread on Solaris x86
kvn
parents:
6179
diff
changeset
|
3607 assert(*constant_addr == (((address) n) + i), err_msg_res("all jump-table entries must contain adjusted node pointer: " INTPTR_FORMAT " == " INTPTR_FORMAT, *constant_addr, (((address) n) + i))); |
| 2008 | 3608 *constant_addr = cb.consts()->target(*labels.at(i), (address) constant_addr); |
| 3609 cb.consts()->relocate((address) constant_addr, relocInfo::internal_word_type); | |
| 3610 } | |
| 3611 } | |
|
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3612 |
|
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3613 void Compile::dump_inlining() { |
| 7605 | 3614 if (PrintInlining || PrintIntrinsics NOT_PRODUCT( || PrintOptoInlining)) { |
| 7473 | 3615 // Print inlining message for candidates that we couldn't inline |
| 3616 // for lack of space or non constant receiver | |
| 3617 for (int i = 0; i < _late_inlines.length(); i++) { | |
| 3618 CallGenerator* cg = _late_inlines.at(i); | |
| 3619 cg->print_inlining_late("live nodes > LiveNodeCountInliningCutoff"); | |
| 3620 } | |
| 3621 Unique_Node_List useful; | |
| 3622 useful.push(root()); | |
| 3623 for (uint next = 0; next < useful.size(); ++next) { | |
| 3624 Node* n = useful.at(next); | |
| 3625 if (n->is_Call() && n->as_Call()->generator() != NULL && n->as_Call()->generator()->call_node() == n) { | |
| 3626 CallNode* call = n->as_Call(); | |
| 3627 CallGenerator* cg = call->generator(); | |
| 3628 cg->print_inlining_late("receiver not constant"); | |
| 3629 } | |
| 3630 uint max = n->len(); | |
| 3631 for ( uint i = 0; i < max; ++i ) { | |
| 3632 Node *m = n->in(i); | |
| 3633 if ( m == NULL ) continue; | |
| 3634 useful.push(m); | |
| 3635 } | |
| 3636 } | |
|
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3637 for (int i = 0; i < _print_inlining_list->length(); i++) { |
|
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3638 tty->print(_print_inlining_list->at(i).ss()->as_string()); |
|
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3639 } |
|
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3640 } |
|
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7199
diff
changeset
|
3641 } |
|
8048
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3642 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3643 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
|
3644 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
|
3645 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
|
3646 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3647 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
|
3648 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
|
3649 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
|
3650 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
|
3651 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3652 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3653 return 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3654 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3655 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3656 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
|
3657 Node* n1 = *n1p; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3658 Node* n2 = *n2p; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3659 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3660 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
|
3661 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3662 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3663 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
|
3664 if (!expensive_nodes_sorted()) { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3665 _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
|
3666 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3667 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3668 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3669 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
|
3670 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
|
3671 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
|
3672 return false; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3673 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3674 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3675 return true; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3676 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3677 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3678 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
|
3679 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
|
3680 return false; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3681 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3682 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3683 assert(OptimizeExpensiveOps, "optimization off?"); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3684 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3685 // 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
|
3686 int j = 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3687 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
|
3688 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
|
3689 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
|
3690 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
|
3691 _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
|
3692 j++; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3693 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3694 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3695 _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
|
3696 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3697 // 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
|
3698 // 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
|
3699 // inputs. |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3700 sort_expensive_nodes(); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3701 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3702 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
|
3703 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
|
3704 return true; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3705 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3706 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3707 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3708 return false; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3709 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3710 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3711 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
|
3712 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
|
3713 return; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3714 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3715 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3716 assert(OptimizeExpensiveOps, "optimization off?"); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3717 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3718 // 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
|
3719 // 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
|
3720 sort_expensive_nodes(); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3721 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3722 int j = 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3723 int identical = 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3724 int i = 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3725 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
|
3726 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
|
3727 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
|
3728 identical++; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3729 _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
|
3730 continue; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3731 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3732 if (identical > 0) { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3733 _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
|
3734 identical = 0; |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3735 } else { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3736 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
|
3737 igvn.hash_delete(n); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3738 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
|
3739 igvn.hash_insert(n); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3740 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3741 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3742 if (identical > 0) { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3743 _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
|
3744 } 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
|
3745 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
|
3746 igvn.hash_delete(n); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3747 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
|
3748 igvn.hash_insert(n); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3749 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3750 _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
|
3751 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3752 |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3753 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
|
3754 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
|
3755 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
|
3756 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
|
3757 if (OptimizeExpensiveOps) { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3758 _expensive_nodes->append(n); |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3759 } else { |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3760 // Clear control input and let IGVN optimize expensive nodes if |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3761 // OptimizeExpensiveOps is off. |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3762 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
|
3763 } |
|
8b3da8d14c93
7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
roland
parents:
7605
diff
changeset
|
3764 } |
|
8691
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3765 |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3766 // Auxiliary method to support randomized stressing/fuzzing. |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3767 // |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3768 // This method can be called the arbitrary number of times, with current count |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3769 // as the argument. The logic allows selecting a single candidate from the |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3770 // running list of candidates as follows: |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3771 // int count = 0; |
|
571076d3c79d
8009120: Fuzz instruction scheduling in HotSpot compilers
shade
parents:
8048
diff
changeset
|
3772 // Cand* selected = null; |
|
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3773 // while(cand = cand->next()) { |
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3774 // if (randomized_select(++count)) { |
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3775 // selected = cand; |
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3776 // } |
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3777 // } |
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3778 // |
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3779 // Including count equalizes the chances any candidate is "selected". |
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3780 // This is useful when we don't have the complete list of candidates to choose |
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3781 // from uniformly. In this case, we need to adjust the randomicity of the |
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3782 // selection, or else we will end up biasing the selection towards the latter |
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3783 // candidates. |
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3784 // |
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3785 // Quick back-envelope calculation shows that for the list of n candidates |
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3786 // the equal probability for the candidate to persist as "best" can be |
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3787 // achieved by replacing it with "next" k-th candidate with the probability |
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3788 // of 1/k. It can be easily shown that by the end of the run, the |
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3789 // probability for any candidate is converged to 1/n, thus giving the |
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3790 // uniform distribution among all the candidates. |
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3791 // |
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3792 // We don't care about the domain size as long as (RANDOMIZED_DOMAIN / count) is large. |
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3793 #define RANDOMIZED_DOMAIN_POW 29 |
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3794 #define RANDOMIZED_DOMAIN (1 << RANDOMIZED_DOMAIN_POW) |
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3795 #define RANDOMIZED_DOMAIN_MASK ((1 << (RANDOMIZED_DOMAIN_POW + 1)) - 1) |
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3796 bool Compile::randomized_select(int count) { |
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3797 assert(count > 0, "only positive"); |
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3798 return (os::random() & RANDOMIZED_DOMAIN_MASK) < (RANDOMIZED_DOMAIN / count); |
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3799 } |