Mercurial > hg > truffle
annotate src/share/vm/c1/c1_LIRGenerator.cpp @ 14662:3c3953fb3f2a
8033380: Experimental VM flag to enforce access atomicity
Summary: -XX:+AlwaysAtomicAccesses to unconditionally enforce the access atomicity.
Reviewed-by: roland, kvn, iveresov
| author | shade |
|---|---|
| date | Mon, 03 Mar 2014 15:54:45 +0400 |
| parents | 8cdf3f43f63e |
| children | b51e29501f30 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2005, 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" |
| 26 #include "c1/c1_Compilation.hpp" | |
| 27 #include "c1/c1_FrameMap.hpp" | |
| 28 #include "c1/c1_Instruction.hpp" | |
| 29 #include "c1/c1_LIRAssembler.hpp" | |
| 30 #include "c1/c1_LIRGenerator.hpp" | |
| 31 #include "c1/c1_ValueStack.hpp" | |
| 32 #include "ci/ciArrayKlass.hpp" | |
| 33 #include "ci/ciInstance.hpp" | |
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34 #include "ci/ciObjArray.hpp" |
| 1972 | 35 #include "runtime/sharedRuntime.hpp" |
| 36 #include "runtime/stubRoutines.hpp" | |
| 37 #include "utilities/bitMap.inline.hpp" | |
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38 #include "utilities/macros.hpp" |
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39 #if INCLUDE_ALL_GCS |
| 1972 | 40 #include "gc_implementation/g1/heapRegion.hpp" |
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41 #endif // INCLUDE_ALL_GCS |
| 0 | 42 |
| 43 #ifdef ASSERT | |
| 44 #define __ gen()->lir(__FILE__, __LINE__)-> | |
| 45 #else | |
| 46 #define __ gen()->lir()-> | |
| 47 #endif | |
| 48 | |
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49 // TODO: ARM - Use some recognizable constant which still fits architectural constraints |
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50 #ifdef ARM |
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51 #define PATCHED_ADDR (204) |
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52 #else |
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53 #define PATCHED_ADDR (max_jint) |
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54 #endif |
| 0 | 55 |
| 56 void PhiResolverState::reset(int max_vregs) { | |
| 57 // Initialize array sizes | |
| 58 _virtual_operands.at_put_grow(max_vregs - 1, NULL, NULL); | |
| 59 _virtual_operands.trunc_to(0); | |
| 60 _other_operands.at_put_grow(max_vregs - 1, NULL, NULL); | |
| 61 _other_operands.trunc_to(0); | |
| 62 _vreg_table.at_put_grow(max_vregs - 1, NULL, NULL); | |
| 63 _vreg_table.trunc_to(0); | |
| 64 } | |
| 65 | |
| 66 | |
| 67 | |
| 68 //-------------------------------------------------------------- | |
| 69 // PhiResolver | |
| 70 | |
| 71 // Resolves cycles: | |
| 72 // | |
| 73 // r1 := r2 becomes temp := r1 | |
| 74 // r2 := r1 r1 := r2 | |
| 75 // r2 := temp | |
| 76 // and orders moves: | |
| 77 // | |
| 78 // r2 := r3 becomes r1 := r2 | |
| 79 // r1 := r2 r2 := r3 | |
| 80 | |
| 81 PhiResolver::PhiResolver(LIRGenerator* gen, int max_vregs) | |
| 82 : _gen(gen) | |
| 83 , _state(gen->resolver_state()) | |
| 84 , _temp(LIR_OprFact::illegalOpr) | |
| 85 { | |
| 86 // reinitialize the shared state arrays | |
| 87 _state.reset(max_vregs); | |
| 88 } | |
| 89 | |
| 90 | |
| 91 void PhiResolver::emit_move(LIR_Opr src, LIR_Opr dest) { | |
| 92 assert(src->is_valid(), ""); | |
| 93 assert(dest->is_valid(), ""); | |
| 94 __ move(src, dest); | |
| 95 } | |
| 96 | |
| 97 | |
| 98 void PhiResolver::move_temp_to(LIR_Opr dest) { | |
| 99 assert(_temp->is_valid(), ""); | |
| 100 emit_move(_temp, dest); | |
| 101 NOT_PRODUCT(_temp = LIR_OprFact::illegalOpr); | |
| 102 } | |
| 103 | |
| 104 | |
| 105 void PhiResolver::move_to_temp(LIR_Opr src) { | |
| 106 assert(_temp->is_illegal(), ""); | |
| 107 _temp = _gen->new_register(src->type()); | |
| 108 emit_move(src, _temp); | |
| 109 } | |
| 110 | |
| 111 | |
| 112 // Traverse assignment graph in depth first order and generate moves in post order | |
| 113 // ie. two assignments: b := c, a := b start with node c: | |
| 114 // Call graph: move(NULL, c) -> move(c, b) -> move(b, a) | |
| 115 // Generates moves in this order: move b to a and move c to b | |
| 116 // ie. cycle a := b, b := a start with node a | |
| 117 // Call graph: move(NULL, a) -> move(a, b) -> move(b, a) | |
| 118 // Generates moves in this order: move b to temp, move a to b, move temp to a | |
| 119 void PhiResolver::move(ResolveNode* src, ResolveNode* dest) { | |
| 120 if (!dest->visited()) { | |
| 121 dest->set_visited(); | |
| 122 for (int i = dest->no_of_destinations()-1; i >= 0; i --) { | |
| 123 move(dest, dest->destination_at(i)); | |
| 124 } | |
| 125 } else if (!dest->start_node()) { | |
| 126 // cylce in graph detected | |
| 127 assert(_loop == NULL, "only one loop valid!"); | |
| 128 _loop = dest; | |
| 129 move_to_temp(src->operand()); | |
| 130 return; | |
| 131 } // else dest is a start node | |
| 132 | |
| 133 if (!dest->assigned()) { | |
| 134 if (_loop == dest) { | |
| 135 move_temp_to(dest->operand()); | |
| 136 dest->set_assigned(); | |
| 137 } else if (src != NULL) { | |
| 138 emit_move(src->operand(), dest->operand()); | |
| 139 dest->set_assigned(); | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 | |
| 145 PhiResolver::~PhiResolver() { | |
| 146 int i; | |
| 147 // resolve any cycles in moves from and to virtual registers | |
| 148 for (i = virtual_operands().length() - 1; i >= 0; i --) { | |
| 149 ResolveNode* node = virtual_operands()[i]; | |
| 150 if (!node->visited()) { | |
| 151 _loop = NULL; | |
| 152 move(NULL, node); | |
| 153 node->set_start_node(); | |
| 154 assert(_temp->is_illegal(), "move_temp_to() call missing"); | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 // generate move for move from non virtual register to abitrary destination | |
| 159 for (i = other_operands().length() - 1; i >= 0; i --) { | |
| 160 ResolveNode* node = other_operands()[i]; | |
| 161 for (int j = node->no_of_destinations() - 1; j >= 0; j --) { | |
| 162 emit_move(node->operand(), node->destination_at(j)->operand()); | |
| 163 } | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 | |
| 168 ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) { | |
| 169 ResolveNode* node; | |
| 170 if (opr->is_virtual()) { | |
| 171 int vreg_num = opr->vreg_number(); | |
| 172 node = vreg_table().at_grow(vreg_num, NULL); | |
| 173 assert(node == NULL || node->operand() == opr, ""); | |
| 174 if (node == NULL) { | |
| 175 node = new ResolveNode(opr); | |
| 176 vreg_table()[vreg_num] = node; | |
| 177 } | |
| 178 // Make sure that all virtual operands show up in the list when | |
| 179 // they are used as the source of a move. | |
| 180 if (source && !virtual_operands().contains(node)) { | |
| 181 virtual_operands().append(node); | |
| 182 } | |
| 183 } else { | |
| 184 assert(source, ""); | |
| 185 node = new ResolveNode(opr); | |
| 186 other_operands().append(node); | |
| 187 } | |
| 188 return node; | |
| 189 } | |
| 190 | |
| 191 | |
| 192 void PhiResolver::move(LIR_Opr src, LIR_Opr dest) { | |
| 193 assert(dest->is_virtual(), ""); | |
| 194 // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr(); | |
| 195 assert(src->is_valid(), ""); | |
| 196 assert(dest->is_valid(), ""); | |
| 197 ResolveNode* source = source_node(src); | |
| 198 source->append(destination_node(dest)); | |
| 199 } | |
| 200 | |
| 201 | |
| 202 //-------------------------------------------------------------- | |
| 203 // LIRItem | |
| 204 | |
| 205 void LIRItem::set_result(LIR_Opr opr) { | |
| 206 assert(value()->operand()->is_illegal() || value()->operand()->is_constant(), "operand should never change"); | |
| 207 value()->set_operand(opr); | |
| 208 | |
| 209 if (opr->is_virtual()) { | |
| 210 _gen->_instruction_for_operand.at_put_grow(opr->vreg_number(), value(), NULL); | |
| 211 } | |
| 212 | |
| 213 _result = opr; | |
| 214 } | |
| 215 | |
| 216 void LIRItem::load_item() { | |
| 217 if (result()->is_illegal()) { | |
| 218 // update the items result | |
| 219 _result = value()->operand(); | |
| 220 } | |
| 221 if (!result()->is_register()) { | |
| 222 LIR_Opr reg = _gen->new_register(value()->type()); | |
| 223 __ move(result(), reg); | |
| 224 if (result()->is_constant()) { | |
| 225 _result = reg; | |
| 226 } else { | |
| 227 set_result(reg); | |
| 228 } | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 | |
| 233 void LIRItem::load_for_store(BasicType type) { | |
| 234 if (_gen->can_store_as_constant(value(), type)) { | |
| 235 _result = value()->operand(); | |
| 236 if (!_result->is_constant()) { | |
| 237 _result = LIR_OprFact::value_type(value()->type()); | |
| 238 } | |
| 239 } else if (type == T_BYTE || type == T_BOOLEAN) { | |
| 240 load_byte_item(); | |
| 241 } else { | |
| 242 load_item(); | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 void LIRItem::load_item_force(LIR_Opr reg) { | |
| 247 LIR_Opr r = result(); | |
| 248 if (r != reg) { | |
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249 #if !defined(ARM) && !defined(E500V2) |
| 0 | 250 if (r->type() != reg->type()) { |
| 251 // moves between different types need an intervening spill slot | |
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252 r = _gen->force_to_spill(r, reg->type()); |
| 0 | 253 } |
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254 #endif |
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255 __ move(r, reg); |
| 0 | 256 _result = reg; |
| 257 } | |
| 258 } | |
| 259 | |
| 260 ciObject* LIRItem::get_jobject_constant() const { | |
| 261 ObjectType* oc = type()->as_ObjectType(); | |
| 262 if (oc) { | |
| 263 return oc->constant_value(); | |
| 264 } | |
| 265 return NULL; | |
| 266 } | |
| 267 | |
| 268 | |
| 269 jint LIRItem::get_jint_constant() const { | |
| 270 assert(is_constant() && value() != NULL, ""); | |
| 271 assert(type()->as_IntConstant() != NULL, "type check"); | |
| 272 return type()->as_IntConstant()->value(); | |
| 273 } | |
| 274 | |
| 275 | |
| 276 jint LIRItem::get_address_constant() const { | |
| 277 assert(is_constant() && value() != NULL, ""); | |
| 278 assert(type()->as_AddressConstant() != NULL, "type check"); | |
| 279 return type()->as_AddressConstant()->value(); | |
| 280 } | |
| 281 | |
| 282 | |
| 283 jfloat LIRItem::get_jfloat_constant() const { | |
| 284 assert(is_constant() && value() != NULL, ""); | |
| 285 assert(type()->as_FloatConstant() != NULL, "type check"); | |
| 286 return type()->as_FloatConstant()->value(); | |
| 287 } | |
| 288 | |
| 289 | |
| 290 jdouble LIRItem::get_jdouble_constant() const { | |
| 291 assert(is_constant() && value() != NULL, ""); | |
| 292 assert(type()->as_DoubleConstant() != NULL, "type check"); | |
| 293 return type()->as_DoubleConstant()->value(); | |
| 294 } | |
| 295 | |
| 296 | |
| 297 jlong LIRItem::get_jlong_constant() const { | |
| 298 assert(is_constant() && value() != NULL, ""); | |
| 299 assert(type()->as_LongConstant() != NULL, "type check"); | |
| 300 return type()->as_LongConstant()->value(); | |
| 301 } | |
| 302 | |
| 303 | |
| 304 | |
| 305 //-------------------------------------------------------------- | |
| 306 | |
| 307 | |
| 308 void LIRGenerator::init() { | |
| 342 | 309 _bs = Universe::heap()->barrier_set(); |
| 0 | 310 } |
| 311 | |
| 312 | |
| 313 void LIRGenerator::block_do_prolog(BlockBegin* block) { | |
| 314 #ifndef PRODUCT | |
| 315 if (PrintIRWithLIR) { | |
| 316 block->print(); | |
| 317 } | |
| 318 #endif | |
| 319 | |
| 320 // set up the list of LIR instructions | |
| 321 assert(block->lir() == NULL, "LIR list already computed for this block"); | |
| 322 _lir = new LIR_List(compilation(), block); | |
| 323 block->set_lir(_lir); | |
| 324 | |
| 325 __ branch_destination(block->label()); | |
| 326 | |
| 327 if (LIRTraceExecution && | |
| 1584 | 328 Compilation::current()->hir()->start()->block_id() != block->block_id() && |
| 0 | 329 !block->is_set(BlockBegin::exception_entry_flag)) { |
| 330 assert(block->lir()->instructions_list()->length() == 1, "should come right after br_dst"); | |
| 331 trace_block_entry(block); | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 | |
| 336 void LIRGenerator::block_do_epilog(BlockBegin* block) { | |
| 337 #ifndef PRODUCT | |
| 338 if (PrintIRWithLIR) { | |
| 339 tty->cr(); | |
| 340 } | |
| 341 #endif | |
| 342 | |
| 343 // LIR_Opr for unpinned constants shouldn't be referenced by other | |
| 344 // blocks so clear them out after processing the block. | |
| 345 for (int i = 0; i < _unpinned_constants.length(); i++) { | |
| 346 _unpinned_constants.at(i)->clear_operand(); | |
| 347 } | |
| 348 _unpinned_constants.trunc_to(0); | |
| 349 | |
| 350 // clear our any registers for other local constants | |
| 351 _constants.trunc_to(0); | |
| 352 _reg_for_constants.trunc_to(0); | |
| 353 } | |
| 354 | |
| 355 | |
| 356 void LIRGenerator::block_do(BlockBegin* block) { | |
| 357 CHECK_BAILOUT(); | |
| 358 | |
| 359 block_do_prolog(block); | |
| 360 set_block(block); | |
| 361 | |
| 362 for (Instruction* instr = block; instr != NULL; instr = instr->next()) { | |
| 363 if (instr->is_pinned()) do_root(instr); | |
| 364 } | |
| 365 | |
| 366 set_block(NULL); | |
| 367 block_do_epilog(block); | |
| 368 } | |
| 369 | |
| 370 | |
| 371 //-------------------------LIRGenerator----------------------------- | |
| 372 | |
| 373 // This is where the tree-walk starts; instr must be root; | |
| 374 void LIRGenerator::do_root(Value instr) { | |
| 375 CHECK_BAILOUT(); | |
| 376 | |
| 377 InstructionMark im(compilation(), instr); | |
| 378 | |
| 379 assert(instr->is_pinned(), "use only with roots"); | |
| 380 assert(instr->subst() == instr, "shouldn't have missed substitution"); | |
| 381 | |
| 382 instr->visit(this); | |
| 383 | |
| 384 assert(!instr->has_uses() || instr->operand()->is_valid() || | |
| 385 instr->as_Constant() != NULL || bailed_out(), "invalid item set"); | |
| 386 } | |
| 387 | |
| 388 | |
| 389 // This is called for each node in tree; the walk stops if a root is reached | |
| 390 void LIRGenerator::walk(Value instr) { | |
| 391 InstructionMark im(compilation(), instr); | |
| 392 //stop walk when encounter a root | |
| 393 if (instr->is_pinned() && instr->as_Phi() == NULL || instr->operand()->is_valid()) { | |
| 394 assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited"); | |
| 395 } else { | |
| 396 assert(instr->subst() == instr, "shouldn't have missed substitution"); | |
| 397 instr->visit(this); | |
| 398 // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use"); | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 | |
| 403 CodeEmitInfo* LIRGenerator::state_for(Instruction* x, ValueStack* state, bool ignore_xhandler) { | |
| 1819 | 404 assert(state != NULL, "state must be defined"); |
| 405 | |
| 8860 | 406 #ifndef PRODUCT |
| 407 state->verify(); | |
| 408 #endif | |
| 409 | |
| 1819 | 410 ValueStack* s = state; |
| 411 for_each_state(s) { | |
| 412 if (s->kind() == ValueStack::EmptyExceptionState) { | |
| 413 assert(s->stack_size() == 0 && s->locals_size() == 0 && (s->locks_size() == 0 || s->locks_size() == 1), "state must be empty"); | |
| 414 continue; | |
| 0 | 415 } |
| 1819 | 416 |
| 417 int index; | |
| 418 Value value; | |
| 419 for_each_stack_value(s, index, value) { | |
| 420 assert(value->subst() == value, "missed substitution"); | |
| 421 if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { | |
| 422 walk(value); | |
| 423 assert(value->operand()->is_valid(), "must be evaluated now"); | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 int bci = s->bci(); | |
| 0 | 428 IRScope* scope = s->scope(); |
| 429 ciMethod* method = scope->method(); | |
| 430 | |
| 431 MethodLivenessResult liveness = method->liveness_at_bci(bci); | |
| 432 if (bci == SynchronizationEntryBCI) { | |
| 433 if (x->as_ExceptionObject() || x->as_Throw()) { | |
| 434 // all locals are dead on exit from the synthetic unlocker | |
| 435 liveness.clear(); | |
| 436 } else { | |
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437 assert(x->as_MonitorEnter() || x->as_ProfileInvoke(), "only other cases are MonitorEnter and ProfileInvoke"); |
| 0 | 438 } |
| 439 } | |
| 440 if (!liveness.is_valid()) { | |
| 441 // Degenerate or breakpointed method. | |
| 442 bailout("Degenerate or breakpointed method"); | |
| 443 } else { | |
| 444 assert((int)liveness.size() == s->locals_size(), "error in use of liveness"); | |
| 445 for_each_local_value(s, index, value) { | |
| 446 assert(value->subst() == value, "missed substition"); | |
| 447 if (liveness.at(index) && !value->type()->is_illegal()) { | |
| 448 if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { | |
| 449 walk(value); | |
| 450 assert(value->operand()->is_valid(), "must be evaluated now"); | |
| 451 } | |
| 452 } else { | |
| 453 // NULL out this local so that linear scan can assume that all non-NULL values are live. | |
| 454 s->invalidate_local(index); | |
| 455 } | |
| 456 } | |
| 457 } | |
| 458 } | |
| 459 | |
| 8860 | 460 return new CodeEmitInfo(state, ignore_xhandler ? NULL : x->exception_handlers(), x->check_flag(Instruction::DeoptimizeOnException)); |
| 0 | 461 } |
| 462 | |
| 463 | |
| 464 CodeEmitInfo* LIRGenerator::state_for(Instruction* x) { | |
| 1819 | 465 return state_for(x, x->exception_state()); |
| 0 | 466 } |
| 467 | |
| 468 | |
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469 void LIRGenerator::klass2reg_with_patching(LIR_Opr r, ciMetadata* obj, CodeEmitInfo* info) { |
| 0 | 470 if (!obj->is_loaded() || PatchALot) { |
| 471 assert(info != NULL, "info must be set if class is not loaded"); | |
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472 __ klass2reg_patch(NULL, r, info); |
| 0 | 473 } else { |
| 474 // no patching needed | |
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475 __ metadata2reg(obj->constant_encoding(), r); |
| 0 | 476 } |
| 477 } | |
| 478 | |
| 479 | |
| 480 void LIRGenerator::array_range_check(LIR_Opr array, LIR_Opr index, | |
| 481 CodeEmitInfo* null_check_info, CodeEmitInfo* range_check_info) { | |
| 482 CodeStub* stub = new RangeCheckStub(range_check_info, index); | |
| 483 if (index->is_constant()) { | |
| 484 cmp_mem_int(lir_cond_belowEqual, array, arrayOopDesc::length_offset_in_bytes(), | |
| 485 index->as_jint(), null_check_info); | |
| 486 __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch | |
| 487 } else { | |
| 488 cmp_reg_mem(lir_cond_aboveEqual, index, array, | |
| 489 arrayOopDesc::length_offset_in_bytes(), T_INT, null_check_info); | |
| 490 __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch | |
| 491 } | |
| 492 } | |
| 493 | |
| 494 | |
| 495 void LIRGenerator::nio_range_check(LIR_Opr buffer, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) { | |
| 496 CodeStub* stub = new RangeCheckStub(info, index, true); | |
| 497 if (index->is_constant()) { | |
| 498 cmp_mem_int(lir_cond_belowEqual, buffer, java_nio_Buffer::limit_offset(), index->as_jint(), info); | |
| 499 __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch | |
| 500 } else { | |
| 501 cmp_reg_mem(lir_cond_aboveEqual, index, buffer, | |
| 502 java_nio_Buffer::limit_offset(), T_INT, info); | |
| 503 __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch | |
| 504 } | |
| 505 __ move(index, result); | |
| 506 } | |
| 507 | |
| 508 | |
| 509 | |
| 510 void LIRGenerator::arithmetic_op(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, bool is_strictfp, LIR_Opr tmp_op, CodeEmitInfo* info) { | |
| 511 LIR_Opr result_op = result; | |
| 512 LIR_Opr left_op = left; | |
| 513 LIR_Opr right_op = right; | |
| 514 | |
| 515 if (TwoOperandLIRForm && left_op != result_op) { | |
| 516 assert(right_op != result_op, "malformed"); | |
| 517 __ move(left_op, result_op); | |
| 518 left_op = result_op; | |
| 519 } | |
| 520 | |
| 521 switch(code) { | |
| 522 case Bytecodes::_dadd: | |
| 523 case Bytecodes::_fadd: | |
| 524 case Bytecodes::_ladd: | |
| 525 case Bytecodes::_iadd: __ add(left_op, right_op, result_op); break; | |
| 526 case Bytecodes::_fmul: | |
| 527 case Bytecodes::_lmul: __ mul(left_op, right_op, result_op); break; | |
| 528 | |
| 529 case Bytecodes::_dmul: | |
| 530 { | |
| 531 if (is_strictfp) { | |
| 532 __ mul_strictfp(left_op, right_op, result_op, tmp_op); break; | |
| 533 } else { | |
| 534 __ mul(left_op, right_op, result_op); break; | |
| 535 } | |
| 536 } | |
| 537 break; | |
| 538 | |
| 539 case Bytecodes::_imul: | |
| 540 { | |
| 541 bool did_strength_reduce = false; | |
| 542 | |
| 543 if (right->is_constant()) { | |
| 544 int c = right->as_jint(); | |
| 545 if (is_power_of_2(c)) { | |
| 546 // do not need tmp here | |
| 547 __ shift_left(left_op, exact_log2(c), result_op); | |
| 548 did_strength_reduce = true; | |
| 549 } else { | |
| 550 did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op); | |
| 551 } | |
| 552 } | |
| 553 // we couldn't strength reduce so just emit the multiply | |
| 554 if (!did_strength_reduce) { | |
| 555 __ mul(left_op, right_op, result_op); | |
| 556 } | |
| 557 } | |
| 558 break; | |
| 559 | |
| 560 case Bytecodes::_dsub: | |
| 561 case Bytecodes::_fsub: | |
| 562 case Bytecodes::_lsub: | |
| 563 case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break; | |
| 564 | |
| 565 case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break; | |
| 566 // ldiv and lrem are implemented with a direct runtime call | |
| 567 | |
| 568 case Bytecodes::_ddiv: | |
| 569 { | |
| 570 if (is_strictfp) { | |
| 571 __ div_strictfp (left_op, right_op, result_op, tmp_op); break; | |
| 572 } else { | |
| 573 __ div (left_op, right_op, result_op); break; | |
| 574 } | |
| 575 } | |
| 576 break; | |
| 577 | |
| 578 case Bytecodes::_drem: | |
| 579 case Bytecodes::_frem: __ rem (left_op, right_op, result_op); break; | |
| 580 | |
| 581 default: ShouldNotReachHere(); | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 | |
| 586 void LIRGenerator::arithmetic_op_int(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr tmp) { | |
| 587 arithmetic_op(code, result, left, right, false, tmp); | |
| 588 } | |
| 589 | |
| 590 | |
| 591 void LIRGenerator::arithmetic_op_long(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) { | |
| 592 arithmetic_op(code, result, left, right, false, LIR_OprFact::illegalOpr, info); | |
| 593 } | |
| 594 | |
| 595 | |
| 596 void LIRGenerator::arithmetic_op_fpu(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, bool is_strictfp, LIR_Opr tmp) { | |
| 597 arithmetic_op(code, result, left, right, is_strictfp, tmp); | |
| 598 } | |
| 599 | |
| 600 | |
| 601 void LIRGenerator::shift_op(Bytecodes::Code code, LIR_Opr result_op, LIR_Opr value, LIR_Opr count, LIR_Opr tmp) { | |
| 602 if (TwoOperandLIRForm && value != result_op) { | |
| 603 assert(count != result_op, "malformed"); | |
| 604 __ move(value, result_op); | |
| 605 value = result_op; | |
| 606 } | |
| 607 | |
| 608 assert(count->is_constant() || count->is_register(), "must be"); | |
| 609 switch(code) { | |
| 610 case Bytecodes::_ishl: | |
| 611 case Bytecodes::_lshl: __ shift_left(value, count, result_op, tmp); break; | |
| 612 case Bytecodes::_ishr: | |
| 613 case Bytecodes::_lshr: __ shift_right(value, count, result_op, tmp); break; | |
| 614 case Bytecodes::_iushr: | |
| 615 case Bytecodes::_lushr: __ unsigned_shift_right(value, count, result_op, tmp); break; | |
| 616 default: ShouldNotReachHere(); | |
| 617 } | |
| 618 } | |
| 619 | |
| 620 | |
| 621 void LIRGenerator::logic_op (Bytecodes::Code code, LIR_Opr result_op, LIR_Opr left_op, LIR_Opr right_op) { | |
| 622 if (TwoOperandLIRForm && left_op != result_op) { | |
| 623 assert(right_op != result_op, "malformed"); | |
| 624 __ move(left_op, result_op); | |
| 625 left_op = result_op; | |
| 626 } | |
| 627 | |
| 628 switch(code) { | |
| 629 case Bytecodes::_iand: | |
| 630 case Bytecodes::_land: __ logical_and(left_op, right_op, result_op); break; | |
| 631 | |
| 632 case Bytecodes::_ior: | |
| 633 case Bytecodes::_lor: __ logical_or(left_op, right_op, result_op); break; | |
| 634 | |
| 635 case Bytecodes::_ixor: | |
| 636 case Bytecodes::_lxor: __ logical_xor(left_op, right_op, result_op); break; | |
| 637 | |
| 638 default: ShouldNotReachHere(); | |
| 639 } | |
| 640 } | |
| 641 | |
| 642 | |
| 643 void LIRGenerator::monitor_enter(LIR_Opr object, LIR_Opr lock, LIR_Opr hdr, LIR_Opr scratch, int monitor_no, CodeEmitInfo* info_for_exception, CodeEmitInfo* info) { | |
| 644 if (!GenerateSynchronizationCode) return; | |
| 645 // for slow path, use debug info for state after successful locking | |
| 646 CodeStub* slow_path = new MonitorEnterStub(object, lock, info); | |
| 647 __ load_stack_address_monitor(monitor_no, lock); | |
| 648 // for handling NullPointerException, use debug info representing just the lock stack before this monitorenter | |
| 649 __ lock_object(hdr, object, lock, scratch, slow_path, info_for_exception); | |
| 650 } | |
| 651 | |
| 652 | |
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653 void LIRGenerator::monitor_exit(LIR_Opr object, LIR_Opr lock, LIR_Opr new_hdr, LIR_Opr scratch, int monitor_no) { |
| 0 | 654 if (!GenerateSynchronizationCode) return; |
| 655 // setup registers | |
| 656 LIR_Opr hdr = lock; | |
| 657 lock = new_hdr; | |
| 658 CodeStub* slow_path = new MonitorExitStub(lock, UseFastLocking, monitor_no); | |
| 659 __ load_stack_address_monitor(monitor_no, lock); | |
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660 __ unlock_object(hdr, object, lock, scratch, slow_path); |
| 0 | 661 } |
| 662 | |
| 663 | |
| 664 void LIRGenerator::new_instance(LIR_Opr dst, ciInstanceKlass* klass, LIR_Opr scratch1, LIR_Opr scratch2, LIR_Opr scratch3, LIR_Opr scratch4, LIR_Opr klass_reg, CodeEmitInfo* info) { | |
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665 klass2reg_with_patching(klass_reg, klass, info); |
| 0 | 666 // If klass is not loaded we do not know if the klass has finalizers: |
| 667 if (UseFastNewInstance && klass->is_loaded() | |
| 668 && !Klass::layout_helper_needs_slow_path(klass->layout_helper())) { | |
| 669 | |
| 670 Runtime1::StubID stub_id = klass->is_initialized() ? Runtime1::fast_new_instance_id : Runtime1::fast_new_instance_init_check_id; | |
| 671 | |
| 672 CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, stub_id); | |
| 673 | |
| 674 assert(klass->is_loaded(), "must be loaded"); | |
| 675 // allocate space for instance | |
| 676 assert(klass->size_helper() >= 0, "illegal instance size"); | |
| 677 const int instance_size = align_object_size(klass->size_helper()); | |
| 678 __ allocate_object(dst, scratch1, scratch2, scratch3, scratch4, | |
| 679 oopDesc::header_size(), instance_size, klass_reg, !klass->is_initialized(), slow_path); | |
| 680 } else { | |
| 681 CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, Runtime1::new_instance_id); | |
| 682 __ branch(lir_cond_always, T_ILLEGAL, slow_path); | |
| 683 __ branch_destination(slow_path->continuation()); | |
| 684 } | |
| 685 } | |
| 686 | |
| 687 | |
| 688 static bool is_constant_zero(Instruction* inst) { | |
| 689 IntConstant* c = inst->type()->as_IntConstant(); | |
| 690 if (c) { | |
| 691 return (c->value() == 0); | |
| 692 } | |
| 693 return false; | |
| 694 } | |
| 695 | |
| 696 | |
| 697 static bool positive_constant(Instruction* inst) { | |
| 698 IntConstant* c = inst->type()->as_IntConstant(); | |
| 699 if (c) { | |
| 700 return (c->value() >= 0); | |
| 701 } | |
| 702 return false; | |
| 703 } | |
| 704 | |
| 705 | |
| 706 static ciArrayKlass* as_array_klass(ciType* type) { | |
| 707 if (type != NULL && type->is_array_klass() && type->is_loaded()) { | |
| 708 return (ciArrayKlass*)type; | |
| 709 } else { | |
| 710 return NULL; | |
| 711 } | |
| 712 } | |
| 713 | |
| 2446 | 714 static ciType* phi_declared_type(Phi* phi) { |
| 715 ciType* t = phi->operand_at(0)->declared_type(); | |
| 716 if (t == NULL) { | |
| 717 return NULL; | |
| 718 } | |
| 719 for(int i = 1; i < phi->operand_count(); i++) { | |
| 720 if (t != phi->operand_at(i)->declared_type()) { | |
| 721 return NULL; | |
| 722 } | |
| 723 } | |
| 724 return t; | |
| 725 } | |
| 726 | |
| 0 | 727 void LIRGenerator::arraycopy_helper(Intrinsic* x, int* flagsp, ciArrayKlass** expected_typep) { |
| 728 Instruction* src = x->argument_at(0); | |
| 729 Instruction* src_pos = x->argument_at(1); | |
| 730 Instruction* dst = x->argument_at(2); | |
| 731 Instruction* dst_pos = x->argument_at(3); | |
| 732 Instruction* length = x->argument_at(4); | |
| 733 | |
| 734 // first try to identify the likely type of the arrays involved | |
| 735 ciArrayKlass* expected_type = NULL; | |
| 2446 | 736 bool is_exact = false, src_objarray = false, dst_objarray = false; |
| 0 | 737 { |
| 738 ciArrayKlass* src_exact_type = as_array_klass(src->exact_type()); | |
| 739 ciArrayKlass* src_declared_type = as_array_klass(src->declared_type()); | |
| 2446 | 740 Phi* phi; |
| 741 if (src_declared_type == NULL && (phi = src->as_Phi()) != NULL) { | |
| 742 src_declared_type = as_array_klass(phi_declared_type(phi)); | |
| 743 } | |
| 0 | 744 ciArrayKlass* dst_exact_type = as_array_klass(dst->exact_type()); |
| 745 ciArrayKlass* dst_declared_type = as_array_klass(dst->declared_type()); | |
| 2446 | 746 if (dst_declared_type == NULL && (phi = dst->as_Phi()) != NULL) { |
| 747 dst_declared_type = as_array_klass(phi_declared_type(phi)); | |
| 748 } | |
| 749 | |
| 0 | 750 if (src_exact_type != NULL && src_exact_type == dst_exact_type) { |
| 751 // the types exactly match so the type is fully known | |
| 752 is_exact = true; | |
| 753 expected_type = src_exact_type; | |
| 754 } else if (dst_exact_type != NULL && dst_exact_type->is_obj_array_klass()) { | |
| 755 ciArrayKlass* dst_type = (ciArrayKlass*) dst_exact_type; | |
| 756 ciArrayKlass* src_type = NULL; | |
| 757 if (src_exact_type != NULL && src_exact_type->is_obj_array_klass()) { | |
| 758 src_type = (ciArrayKlass*) src_exact_type; | |
| 759 } else if (src_declared_type != NULL && src_declared_type->is_obj_array_klass()) { | |
| 760 src_type = (ciArrayKlass*) src_declared_type; | |
| 761 } | |
| 762 if (src_type != NULL) { | |
| 763 if (src_type->element_type()->is_subtype_of(dst_type->element_type())) { | |
| 764 is_exact = true; | |
| 765 expected_type = dst_type; | |
| 766 } | |
| 767 } | |
| 768 } | |
| 769 // at least pass along a good guess | |
| 770 if (expected_type == NULL) expected_type = dst_exact_type; | |
| 771 if (expected_type == NULL) expected_type = src_declared_type; | |
| 772 if (expected_type == NULL) expected_type = dst_declared_type; | |
| 2446 | 773 |
| 774 src_objarray = (src_exact_type && src_exact_type->is_obj_array_klass()) || (src_declared_type && src_declared_type->is_obj_array_klass()); | |
| 775 dst_objarray = (dst_exact_type && dst_exact_type->is_obj_array_klass()) || (dst_declared_type && dst_declared_type->is_obj_array_klass()); | |
| 0 | 776 } |
| 777 | |
| 778 // if a probable array type has been identified, figure out if any | |
| 779 // of the required checks for a fast case can be elided. | |
| 780 int flags = LIR_OpArrayCopy::all_flags; | |
| 2446 | 781 |
| 782 if (!src_objarray) | |
| 783 flags &= ~LIR_OpArrayCopy::src_objarray; | |
| 784 if (!dst_objarray) | |
| 785 flags &= ~LIR_OpArrayCopy::dst_objarray; | |
| 786 | |
| 787 if (!x->arg_needs_null_check(0)) | |
| 788 flags &= ~LIR_OpArrayCopy::src_null_check; | |
| 789 if (!x->arg_needs_null_check(2)) | |
| 790 flags &= ~LIR_OpArrayCopy::dst_null_check; | |
| 791 | |
| 792 | |
| 0 | 793 if (expected_type != NULL) { |
| 2446 | 794 Value length_limit = NULL; |
| 795 | |
| 796 IfOp* ifop = length->as_IfOp(); | |
| 797 if (ifop != NULL) { | |
| 798 // look for expressions like min(v, a.length) which ends up as | |
| 799 // x > y ? y : x or x >= y ? y : x | |
| 800 if ((ifop->cond() == If::gtr || ifop->cond() == If::geq) && | |
| 801 ifop->x() == ifop->fval() && | |
| 802 ifop->y() == ifop->tval()) { | |
| 803 length_limit = ifop->y(); | |
| 804 } | |
| 805 } | |
| 806 | |
| 807 // try to skip null checks and range checks | |
| 808 NewArray* src_array = src->as_NewArray(); | |
| 809 if (src_array != NULL) { | |
| 0 | 810 flags &= ~LIR_OpArrayCopy::src_null_check; |
| 2446 | 811 if (length_limit != NULL && |
| 812 src_array->length() == length_limit && | |
| 813 is_constant_zero(src_pos)) { | |
| 814 flags &= ~LIR_OpArrayCopy::src_range_check; | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 NewArray* dst_array = dst->as_NewArray(); | |
| 819 if (dst_array != NULL) { | |
| 0 | 820 flags &= ~LIR_OpArrayCopy::dst_null_check; |
| 2446 | 821 if (length_limit != NULL && |
| 822 dst_array->length() == length_limit && | |
| 823 is_constant_zero(dst_pos)) { | |
| 824 flags &= ~LIR_OpArrayCopy::dst_range_check; | |
| 825 } | |
| 826 } | |
| 0 | 827 |
| 828 // check from incoming constant values | |
| 829 if (positive_constant(src_pos)) | |
| 830 flags &= ~LIR_OpArrayCopy::src_pos_positive_check; | |
| 831 if (positive_constant(dst_pos)) | |
| 832 flags &= ~LIR_OpArrayCopy::dst_pos_positive_check; | |
| 833 if (positive_constant(length)) | |
| 834 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 835 | |
| 836 // see if the range check can be elided, which might also imply | |
| 837 // that src or dst is non-null. | |
| 838 ArrayLength* al = length->as_ArrayLength(); | |
| 839 if (al != NULL) { | |
| 840 if (al->array() == src) { | |
| 841 // it's the length of the source array | |
| 842 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 843 flags &= ~LIR_OpArrayCopy::src_null_check; | |
| 844 if (is_constant_zero(src_pos)) | |
| 845 flags &= ~LIR_OpArrayCopy::src_range_check; | |
| 846 } | |
| 847 if (al->array() == dst) { | |
| 848 // it's the length of the destination array | |
| 849 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 850 flags &= ~LIR_OpArrayCopy::dst_null_check; | |
| 851 if (is_constant_zero(dst_pos)) | |
| 852 flags &= ~LIR_OpArrayCopy::dst_range_check; | |
| 853 } | |
| 854 } | |
| 855 if (is_exact) { | |
| 856 flags &= ~LIR_OpArrayCopy::type_check; | |
| 857 } | |
| 858 } | |
| 859 | |
| 2446 | 860 IntConstant* src_int = src_pos->type()->as_IntConstant(); |
| 861 IntConstant* dst_int = dst_pos->type()->as_IntConstant(); | |
| 862 if (src_int && dst_int) { | |
| 863 int s_offs = src_int->value(); | |
| 864 int d_offs = dst_int->value(); | |
| 865 if (src_int->value() >= dst_int->value()) { | |
| 866 flags &= ~LIR_OpArrayCopy::overlapping; | |
| 867 } | |
| 868 if (expected_type != NULL) { | |
| 869 BasicType t = expected_type->element_type()->basic_type(); | |
| 870 int element_size = type2aelembytes(t); | |
| 871 if (((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && | |
| 872 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0)) { | |
| 873 flags &= ~LIR_OpArrayCopy::unaligned; | |
| 874 } | |
| 875 } | |
| 876 } else if (src_pos == dst_pos || is_constant_zero(dst_pos)) { | |
| 877 // src and dest positions are the same, or dst is zero so assume | |
| 878 // nonoverlapping copy. | |
| 879 flags &= ~LIR_OpArrayCopy::overlapping; | |
| 880 } | |
| 881 | |
| 0 | 882 if (src == dst) { |
| 883 // moving within a single array so no type checks are needed | |
| 884 if (flags & LIR_OpArrayCopy::type_check) { | |
| 885 flags &= ~LIR_OpArrayCopy::type_check; | |
| 886 } | |
| 887 } | |
| 888 *flagsp = flags; | |
| 889 *expected_typep = (ciArrayKlass*)expected_type; | |
| 890 } | |
| 891 | |
| 892 | |
| 893 LIR_Opr LIRGenerator::round_item(LIR_Opr opr) { | |
| 894 assert(opr->is_register(), "why spill if item is not register?"); | |
| 895 | |
| 896 if (RoundFPResults && UseSSE < 1 && opr->is_single_fpu()) { | |
| 897 LIR_Opr result = new_register(T_FLOAT); | |
| 898 set_vreg_flag(result, must_start_in_memory); | |
| 899 assert(opr->is_register(), "only a register can be spilled"); | |
| 900 assert(opr->value_type()->is_float(), "rounding only for floats available"); | |
| 901 __ roundfp(opr, LIR_OprFact::illegalOpr, result); | |
| 902 return result; | |
| 903 } | |
| 904 return opr; | |
| 905 } | |
| 906 | |
| 907 | |
| 908 LIR_Opr LIRGenerator::force_to_spill(LIR_Opr value, BasicType t) { | |
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909 assert(type2size[t] == type2size[value->type()], |
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910 err_msg_res("size mismatch: t=%s, value->type()=%s", type2name(t), type2name(value->type()))); |
| 0 | 911 if (!value->is_register()) { |
| 912 // force into a register | |
| 913 LIR_Opr r = new_register(value->type()); | |
| 914 __ move(value, r); | |
| 915 value = r; | |
| 916 } | |
| 917 | |
| 918 // create a spill location | |
| 919 LIR_Opr tmp = new_register(t); | |
| 920 set_vreg_flag(tmp, LIRGenerator::must_start_in_memory); | |
| 921 | |
| 922 // move from register to spill | |
| 923 __ move(value, tmp); | |
| 924 return tmp; | |
| 925 } | |
| 926 | |
| 927 void LIRGenerator::profile_branch(If* if_instr, If::Condition cond) { | |
| 928 if (if_instr->should_profile()) { | |
| 929 ciMethod* method = if_instr->profiled_method(); | |
| 930 assert(method != NULL, "method should be set if branch is profiled"); | |
|
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931 ciMethodData* md = method->method_data_or_null(); |
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932 assert(md != NULL, "Sanity"); |
| 0 | 933 ciProfileData* data = md->bci_to_data(if_instr->profiled_bci()); |
| 934 assert(data != NULL, "must have profiling data"); | |
| 935 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 936 int taken_count_offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); | |
| 937 int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); | |
| 1783 | 938 if (if_instr->is_swapped()) { |
| 939 int t = taken_count_offset; | |
| 940 taken_count_offset = not_taken_count_offset; | |
| 941 not_taken_count_offset = t; | |
| 942 } | |
| 943 | |
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944 LIR_Opr md_reg = new_register(T_METADATA); |
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945 __ metadata2reg(md->constant_encoding(), md_reg); |
| 1783 | 946 |
| 947 LIR_Opr data_offset_reg = new_pointer_register(); | |
| 0 | 948 __ cmove(lir_cond(cond), |
| 1783 | 949 LIR_OprFact::intptrConst(taken_count_offset), |
| 950 LIR_OprFact::intptrConst(not_taken_count_offset), | |
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951 data_offset_reg, as_BasicType(if_instr->x()->type())); |
| 1783 | 952 |
| 953 // MDO cells are intptr_t, so the data_reg width is arch-dependent. | |
| 954 LIR_Opr data_reg = new_pointer_register(); | |
| 955 LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, data_reg->type()); | |
| 2002 | 956 __ move(data_addr, data_reg); |
| 1783 | 957 // Use leal instead of add to avoid destroying condition codes on x86 |
| 0 | 958 LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT); |
| 959 __ leal(LIR_OprFact::address(fake_incr_value), data_reg); | |
| 2002 | 960 __ move(data_reg, data_addr); |
| 0 | 961 } |
| 962 } | |
| 963 | |
| 964 // Phi technique: | |
| 965 // This is about passing live values from one basic block to the other. | |
| 966 // In code generated with Java it is rather rare that more than one | |
| 967 // value is on the stack from one basic block to the other. | |
| 968 // We optimize our technique for efficient passing of one value | |
| 969 // (of type long, int, double..) but it can be extended. | |
| 970 // When entering or leaving a basic block, all registers and all spill | |
| 971 // slots are release and empty. We use the released registers | |
| 972 // and spill slots to pass the live values from one block | |
| 973 // to the other. The topmost value, i.e., the value on TOS of expression | |
| 974 // stack is passed in registers. All other values are stored in spilling | |
| 975 // area. Every Phi has an index which designates its spill slot | |
| 976 // At exit of a basic block, we fill the register(s) and spill slots. | |
| 977 // At entry of a basic block, the block_prolog sets up the content of phi nodes | |
| 978 // and locks necessary registers and spilling slots. | |
| 979 | |
| 980 | |
| 981 // move current value to referenced phi function | |
| 982 void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_val) { | |
| 983 Phi* phi = sux_val->as_Phi(); | |
| 984 // cur_val can be null without phi being null in conjunction with inlining | |
| 985 if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) { | |
| 986 LIR_Opr operand = cur_val->operand(); | |
| 987 if (cur_val->operand()->is_illegal()) { | |
| 988 assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL, | |
| 989 "these can be produced lazily"); | |
| 990 operand = operand_for_instruction(cur_val); | |
| 991 } | |
| 992 resolver->move(operand, operand_for_instruction(phi)); | |
| 993 } | |
| 994 } | |
| 995 | |
| 996 | |
| 997 // Moves all stack values into their PHI position | |
| 998 void LIRGenerator::move_to_phi(ValueStack* cur_state) { | |
| 999 BlockBegin* bb = block(); | |
| 1000 if (bb->number_of_sux() == 1) { | |
| 1001 BlockBegin* sux = bb->sux_at(0); | |
| 1002 assert(sux->number_of_preds() > 0, "invalid CFG"); | |
| 1003 | |
| 1004 // a block with only one predecessor never has phi functions | |
| 1005 if (sux->number_of_preds() > 1) { | |
| 1006 int max_phis = cur_state->stack_size() + cur_state->locals_size(); | |
| 1007 PhiResolver resolver(this, _virtual_register_number + max_phis * 2); | |
| 1008 | |
| 1009 ValueStack* sux_state = sux->state(); | |
| 1010 Value sux_value; | |
| 1011 int index; | |
| 1012 | |
| 1819 | 1013 assert(cur_state->scope() == sux_state->scope(), "not matching"); |
| 1014 assert(cur_state->locals_size() == sux_state->locals_size(), "not matching"); | |
| 1015 assert(cur_state->stack_size() == sux_state->stack_size(), "not matching"); | |
| 1016 | |
| 0 | 1017 for_each_stack_value(sux_state, index, sux_value) { |
| 1018 move_to_phi(&resolver, cur_state->stack_at(index), sux_value); | |
| 1019 } | |
| 1020 | |
| 1021 for_each_local_value(sux_state, index, sux_value) { | |
| 1022 move_to_phi(&resolver, cur_state->local_at(index), sux_value); | |
| 1023 } | |
| 1024 | |
| 1025 assert(cur_state->caller_state() == sux_state->caller_state(), "caller states must be equal"); | |
| 1026 } | |
| 1027 } | |
| 1028 } | |
| 1029 | |
| 1030 | |
| 1031 LIR_Opr LIRGenerator::new_register(BasicType type) { | |
| 1032 int vreg = _virtual_register_number; | |
| 1033 // add a little fudge factor for the bailout, since the bailout is | |
| 1034 // only checked periodically. This gives a few extra registers to | |
| 1035 // hand out before we really run out, which helps us keep from | |
| 1036 // tripping over assertions. | |
| 1037 if (vreg + 20 >= LIR_OprDesc::vreg_max) { | |
| 1038 bailout("out of virtual registers"); | |
| 1039 if (vreg + 2 >= LIR_OprDesc::vreg_max) { | |
| 1040 // wrap it around | |
| 1041 _virtual_register_number = LIR_OprDesc::vreg_base; | |
| 1042 } | |
| 1043 } | |
| 1044 _virtual_register_number += 1; | |
| 1045 return LIR_OprFact::virtual_register(vreg, type); | |
| 1046 } | |
| 1047 | |
| 1048 | |
| 1049 // Try to lock using register in hint | |
| 1050 LIR_Opr LIRGenerator::rlock(Value instr) { | |
| 1051 return new_register(instr->type()); | |
| 1052 } | |
| 1053 | |
| 1054 | |
| 1055 // does an rlock and sets result | |
| 1056 LIR_Opr LIRGenerator::rlock_result(Value x) { | |
| 1057 LIR_Opr reg = rlock(x); | |
| 1058 set_result(x, reg); | |
| 1059 return reg; | |
| 1060 } | |
| 1061 | |
| 1062 | |
| 1063 // does an rlock and sets result | |
| 1064 LIR_Opr LIRGenerator::rlock_result(Value x, BasicType type) { | |
| 1065 LIR_Opr reg; | |
| 1066 switch (type) { | |
| 1067 case T_BYTE: | |
| 1068 case T_BOOLEAN: | |
| 1069 reg = rlock_byte(type); | |
| 1070 break; | |
| 1071 default: | |
| 1072 reg = rlock(x); | |
| 1073 break; | |
| 1074 } | |
| 1075 | |
| 1076 set_result(x, reg); | |
| 1077 return reg; | |
| 1078 } | |
| 1079 | |
| 1080 | |
| 1081 //--------------------------------------------------------------------- | |
| 1082 ciObject* LIRGenerator::get_jobject_constant(Value value) { | |
| 1083 ObjectType* oc = value->type()->as_ObjectType(); | |
| 1084 if (oc) { | |
| 1085 return oc->constant_value(); | |
| 1086 } | |
| 1087 return NULL; | |
| 1088 } | |
| 1089 | |
| 1090 | |
| 1091 void LIRGenerator::do_ExceptionObject(ExceptionObject* x) { | |
| 1092 assert(block()->is_set(BlockBegin::exception_entry_flag), "ExceptionObject only allowed in exception handler block"); | |
| 1093 assert(block()->next() == x, "ExceptionObject must be first instruction of block"); | |
| 1094 | |
| 1095 // no moves are created for phi functions at the begin of exception | |
| 1096 // handlers, so assign operands manually here | |
| 1097 for_each_phi_fun(block(), phi, | |
| 1098 operand_for_instruction(phi)); | |
| 1099 | |
| 1100 LIR_Opr thread_reg = getThreadPointer(); | |
| 2002 | 1101 __ move_wide(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT), |
| 1102 exceptionOopOpr()); | |
| 1103 __ move_wide(LIR_OprFact::oopConst(NULL), | |
| 1104 new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT)); | |
| 1105 __ move_wide(LIR_OprFact::oopConst(NULL), | |
| 1106 new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT)); | |
| 0 | 1107 |
| 1108 LIR_Opr result = new_register(T_OBJECT); | |
| 1109 __ move(exceptionOopOpr(), result); | |
| 1110 set_result(x, result); | |
| 1111 } | |
| 1112 | |
| 1113 | |
| 1114 //---------------------------------------------------------------------- | |
| 1115 //---------------------------------------------------------------------- | |
| 1116 //---------------------------------------------------------------------- | |
| 1117 //---------------------------------------------------------------------- | |
| 1118 // visitor functions | |
| 1119 //---------------------------------------------------------------------- | |
| 1120 //---------------------------------------------------------------------- | |
| 1121 //---------------------------------------------------------------------- | |
| 1122 //---------------------------------------------------------------------- | |
| 1123 | |
| 1124 void LIRGenerator::do_Phi(Phi* x) { | |
| 1125 // phi functions are never visited directly | |
| 1126 ShouldNotReachHere(); | |
| 1127 } | |
| 1128 | |
| 1129 | |
| 1130 // Code for a constant is generated lazily unless the constant is frequently used and can't be inlined. | |
| 1131 void LIRGenerator::do_Constant(Constant* x) { | |
| 1819 | 1132 if (x->state_before() != NULL) { |
| 0 | 1133 // Any constant with a ValueStack requires patching so emit the patch here |
| 1134 LIR_Opr reg = rlock_result(x); | |
| 1819 | 1135 CodeEmitInfo* info = state_for(x, x->state_before()); |
| 0 | 1136 __ oop2reg_patch(NULL, reg, info); |
| 1137 } else if (x->use_count() > 1 && !can_inline_as_constant(x)) { | |
| 1138 if (!x->is_pinned()) { | |
| 1139 // unpinned constants are handled specially so that they can be | |
| 1140 // put into registers when they are used multiple times within a | |
| 1141 // block. After the block completes their operand will be | |
| 1142 // cleared so that other blocks can't refer to that register. | |
| 1143 set_result(x, load_constant(x)); | |
| 1144 } else { | |
| 1145 LIR_Opr res = x->operand(); | |
| 1146 if (!res->is_valid()) { | |
| 1147 res = LIR_OprFact::value_type(x->type()); | |
| 1148 } | |
| 1149 if (res->is_constant()) { | |
| 1150 LIR_Opr reg = rlock_result(x); | |
| 1151 __ move(res, reg); | |
| 1152 } else { | |
| 1153 set_result(x, res); | |
| 1154 } | |
| 1155 } | |
| 1156 } else { | |
| 1157 set_result(x, LIR_OprFact::value_type(x->type())); | |
| 1158 } | |
| 1159 } | |
| 1160 | |
| 1161 | |
| 1162 void LIRGenerator::do_Local(Local* x) { | |
| 1163 // operand_for_instruction has the side effect of setting the result | |
| 1164 // so there's no need to do it here. | |
| 1165 operand_for_instruction(x); | |
| 1166 } | |
| 1167 | |
| 1168 | |
| 1169 void LIRGenerator::do_IfInstanceOf(IfInstanceOf* x) { | |
| 1170 Unimplemented(); | |
| 1171 } | |
| 1172 | |
| 1173 | |
| 1174 void LIRGenerator::do_Return(Return* x) { | |
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1175 if (compilation()->env()->dtrace_method_probes()) { |
| 0 | 1176 BasicTypeList signature; |
| 2002 | 1177 signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
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1178 signature.append(T_METADATA); // Method* |
| 0 | 1179 LIR_OprList* args = new LIR_OprList(); |
| 1180 args->append(getThreadPointer()); | |
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1181 LIR_Opr meth = new_register(T_METADATA); |
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1182 __ metadata2reg(method()->constant_encoding(), meth); |
| 0 | 1183 args->append(meth); |
| 1184 call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL); | |
| 1185 } | |
| 1186 | |
| 1187 if (x->type()->is_void()) { | |
| 1188 __ return_op(LIR_OprFact::illegalOpr); | |
| 1189 } else { | |
| 1190 LIR_Opr reg = result_register_for(x->type(), /*callee=*/true); | |
| 1191 LIRItem result(x->result(), this); | |
| 1192 | |
| 1193 result.load_item_force(reg); | |
| 1194 __ return_op(result.result()); | |
| 1195 } | |
| 1196 set_no_result(x); | |
| 1197 } | |
| 1198 | |
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1199 // Examble: ref.get() |
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1200 // Combination of LoadField and g1 pre-write barrier |
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1201 void LIRGenerator::do_Reference_get(Intrinsic* x) { |
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1202 |
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1203 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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1204 guarantee(referent_offset > 0, "referent offset not initialized"); |
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1205 |
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1206 assert(x->number_of_arguments() == 1, "wrong type"); |
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1207 |
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1208 LIRItem reference(x->argument_at(0), this); |
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1209 reference.load_item(); |
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1210 |
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1211 // need to perform the null check on the reference objecy |
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1212 CodeEmitInfo* info = NULL; |
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1213 if (x->needs_null_check()) { |
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1214 info = state_for(x); |
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1215 } |
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1216 |
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1217 LIR_Address* referent_field_adr = |
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1218 new LIR_Address(reference.result(), referent_offset, T_OBJECT); |
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1219 |
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1220 LIR_Opr result = rlock_result(x); |
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1221 |
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1222 __ load(referent_field_adr, result, info); |
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1223 |
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1224 // Register the value in the referent field with the pre-barrier |
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1225 pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */, |
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1226 result /* pre_val */, |
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1227 false /* do_load */, |
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1228 false /* patch */, |
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1229 NULL /* info */); |
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1230 } |
| 0 | 1231 |
| 6135 | 1232 // Example: clazz.isInstance(object) |
| 1233 void LIRGenerator::do_isInstance(Intrinsic* x) { | |
| 1234 assert(x->number_of_arguments() == 2, "wrong type"); | |
| 1235 | |
| 1236 // TODO could try to substitute this node with an equivalent InstanceOf | |
| 1237 // if clazz is known to be a constant Class. This will pick up newly found | |
| 1238 // constants after HIR construction. I'll leave this to a future change. | |
| 1239 | |
| 1240 // as a first cut, make a simple leaf call to runtime to stay platform independent. | |
| 1241 // could follow the aastore example in a future change. | |
| 1242 | |
| 1243 LIRItem clazz(x->argument_at(0), this); | |
| 1244 LIRItem object(x->argument_at(1), this); | |
| 1245 clazz.load_item(); | |
| 1246 object.load_item(); | |
| 1247 LIR_Opr result = rlock_result(x); | |
| 1248 | |
| 1249 // need to perform null check on clazz | |
| 1250 if (x->needs_null_check()) { | |
| 1251 CodeEmitInfo* info = state_for(x); | |
| 1252 __ null_check(clazz.result(), info); | |
| 1253 } | |
| 1254 | |
| 1255 LIR_Opr call_result = call_runtime(clazz.value(), object.value(), | |
| 1256 CAST_FROM_FN_PTR(address, Runtime1::is_instance_of), | |
| 1257 x->type(), | |
| 1258 NULL); // NULL CodeEmitInfo results in a leaf call | |
| 1259 __ move(call_result, result); | |
| 1260 } | |
| 1261 | |
| 0 | 1262 // Example: object.getClass () |
| 1263 void LIRGenerator::do_getClass(Intrinsic* x) { | |
| 1264 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 1265 | |
| 1266 LIRItem rcvr(x->argument_at(0), this); | |
| 1267 rcvr.load_item(); | |
| 12955 | 1268 LIR_Opr temp = new_register(T_METADATA); |
| 0 | 1269 LIR_Opr result = rlock_result(x); |
| 1270 | |
| 1271 // need to perform the null check on the rcvr | |
| 1272 CodeEmitInfo* info = NULL; | |
| 1273 if (x->needs_null_check()) { | |
| 1819 | 1274 info = state_for(x); |
| 0 | 1275 } |
| 12955 | 1276 |
| 1277 // FIXME T_ADDRESS should actually be T_METADATA but it can't because the | |
| 1278 // meaning of these two is mixed up (see JDK-8026837). | |
| 1279 __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), temp, info); | |
| 1280 __ move_wide(new LIR_Address(temp, in_bytes(Klass::java_mirror_offset()), T_OBJECT), result); | |
| 0 | 1281 } |
| 1282 | |
| 1283 | |
| 1284 // Example: Thread.currentThread() | |
| 1285 void LIRGenerator::do_currentThread(Intrinsic* x) { | |
| 1286 assert(x->number_of_arguments() == 0, "wrong type"); | |
| 1287 LIR_Opr reg = rlock_result(x); | |
| 2002 | 1288 __ move_wide(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg); |
| 0 | 1289 } |
| 1290 | |
| 1291 | |
| 1292 void LIRGenerator::do_RegisterFinalizer(Intrinsic* x) { | |
| 1293 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 1294 LIRItem receiver(x->argument_at(0), this); | |
| 1295 | |
| 1296 receiver.load_item(); | |
| 1297 BasicTypeList signature; | |
| 1298 signature.append(T_OBJECT); // receiver | |
| 1299 LIR_OprList* args = new LIR_OprList(); | |
| 1300 args->append(receiver.result()); | |
| 1301 CodeEmitInfo* info = state_for(x, x->state()); | |
| 1302 call_runtime(&signature, args, | |
| 1303 CAST_FROM_FN_PTR(address, Runtime1::entry_for(Runtime1::register_finalizer_id)), | |
| 1304 voidType, info); | |
| 1305 | |
| 1306 set_no_result(x); | |
| 1307 } | |
| 1308 | |
| 1309 | |
| 1310 //------------------------local access-------------------------------------- | |
| 1311 | |
| 1312 LIR_Opr LIRGenerator::operand_for_instruction(Instruction* x) { | |
| 1313 if (x->operand()->is_illegal()) { | |
| 1314 Constant* c = x->as_Constant(); | |
| 1315 if (c != NULL) { | |
| 1316 x->set_operand(LIR_OprFact::value_type(c->type())); | |
| 1317 } else { | |
| 1318 assert(x->as_Phi() || x->as_Local() != NULL, "only for Phi and Local"); | |
| 1319 // allocate a virtual register for this local or phi | |
| 1320 x->set_operand(rlock(x)); | |
| 1321 _instruction_for_operand.at_put_grow(x->operand()->vreg_number(), x, NULL); | |
| 1322 } | |
| 1323 } | |
| 1324 return x->operand(); | |
| 1325 } | |
| 1326 | |
| 1327 | |
| 1328 Instruction* LIRGenerator::instruction_for_opr(LIR_Opr opr) { | |
| 1329 if (opr->is_virtual()) { | |
| 1330 return instruction_for_vreg(opr->vreg_number()); | |
| 1331 } | |
| 1332 return NULL; | |
| 1333 } | |
| 1334 | |
| 1335 | |
| 1336 Instruction* LIRGenerator::instruction_for_vreg(int reg_num) { | |
| 1337 if (reg_num < _instruction_for_operand.length()) { | |
| 1338 return _instruction_for_operand.at(reg_num); | |
| 1339 } | |
| 1340 return NULL; | |
| 1341 } | |
| 1342 | |
| 1343 | |
| 1344 void LIRGenerator::set_vreg_flag(int vreg_num, VregFlag f) { | |
| 1345 if (_vreg_flags.size_in_bits() == 0) { | |
| 1346 BitMap2D temp(100, num_vreg_flags); | |
| 1347 temp.clear(); | |
| 1348 _vreg_flags = temp; | |
| 1349 } | |
| 1350 _vreg_flags.at_put_grow(vreg_num, f, true); | |
| 1351 } | |
| 1352 | |
| 1353 bool LIRGenerator::is_vreg_flag_set(int vreg_num, VregFlag f) { | |
| 1354 if (!_vreg_flags.is_valid_index(vreg_num, f)) { | |
| 1355 return false; | |
| 1356 } | |
| 1357 return _vreg_flags.at(vreg_num, f); | |
| 1358 } | |
| 1359 | |
| 1360 | |
| 1361 // Block local constant handling. This code is useful for keeping | |
| 1362 // unpinned constants and constants which aren't exposed in the IR in | |
| 1363 // registers. Unpinned Constant instructions have their operands | |
| 1364 // cleared when the block is finished so that other blocks can't end | |
| 1365 // up referring to their registers. | |
| 1366 | |
| 1367 LIR_Opr LIRGenerator::load_constant(Constant* x) { | |
| 1368 assert(!x->is_pinned(), "only for unpinned constants"); | |
| 1369 _unpinned_constants.append(x); | |
| 1370 return load_constant(LIR_OprFact::value_type(x->type())->as_constant_ptr()); | |
| 1371 } | |
| 1372 | |
| 1373 | |
| 1374 LIR_Opr LIRGenerator::load_constant(LIR_Const* c) { | |
| 1375 BasicType t = c->type(); | |
| 1376 for (int i = 0; i < _constants.length(); i++) { | |
| 1377 LIR_Const* other = _constants.at(i); | |
| 1378 if (t == other->type()) { | |
| 1379 switch (t) { | |
| 1380 case T_INT: | |
| 1381 case T_FLOAT: | |
| 1382 if (c->as_jint_bits() != other->as_jint_bits()) continue; | |
| 1383 break; | |
| 1384 case T_LONG: | |
| 1385 case T_DOUBLE: | |
|
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1386 if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue; |
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1387 if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue; |
| 0 | 1388 break; |
| 1389 case T_OBJECT: | |
| 1390 if (c->as_jobject() != other->as_jobject()) continue; | |
| 1391 break; | |
| 1392 } | |
| 1393 return _reg_for_constants.at(i); | |
| 1394 } | |
| 1395 } | |
| 1396 | |
| 1397 LIR_Opr result = new_register(t); | |
| 1398 __ move((LIR_Opr)c, result); | |
| 1399 _constants.append(c); | |
| 1400 _reg_for_constants.append(result); | |
| 1401 return result; | |
| 1402 } | |
| 1403 | |
| 1404 // Various barriers | |
| 1405 | |
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1406 void LIRGenerator::pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
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1407 bool do_load, bool patch, CodeEmitInfo* info) { |
| 342 | 1408 // Do the pre-write barrier, if any. |
| 1409 switch (_bs->kind()) { | |
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1410 #if INCLUDE_ALL_GCS |
| 342 | 1411 case BarrierSet::G1SATBCT: |
| 1412 case BarrierSet::G1SATBCTLogging: | |
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1413 G1SATBCardTableModRef_pre_barrier(addr_opr, pre_val, do_load, patch, info); |
| 342 | 1414 break; |
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1415 #endif // INCLUDE_ALL_GCS |
| 342 | 1416 case BarrierSet::CardTableModRef: |
| 1417 case BarrierSet::CardTableExtension: | |
| 1418 // No pre barriers | |
| 1419 break; | |
| 1420 case BarrierSet::ModRef: | |
| 1421 case BarrierSet::Other: | |
| 1422 // No pre barriers | |
| 1423 break; | |
| 1424 default : | |
| 1425 ShouldNotReachHere(); | |
| 1426 | |
| 1427 } | |
| 1428 } | |
| 1429 | |
| 0 | 1430 void LIRGenerator::post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
| 342 | 1431 switch (_bs->kind()) { |
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1432 #if INCLUDE_ALL_GCS |
| 342 | 1433 case BarrierSet::G1SATBCT: |
| 1434 case BarrierSet::G1SATBCTLogging: | |
| 1435 G1SATBCardTableModRef_post_barrier(addr, new_val); | |
| 1436 break; | |
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1437 #endif // INCLUDE_ALL_GCS |
| 0 | 1438 case BarrierSet::CardTableModRef: |
| 1439 case BarrierSet::CardTableExtension: | |
| 1440 CardTableModRef_post_barrier(addr, new_val); | |
| 1441 break; | |
| 1442 case BarrierSet::ModRef: | |
| 1443 case BarrierSet::Other: | |
| 1444 // No post barriers | |
| 1445 break; | |
| 1446 default : | |
| 1447 ShouldNotReachHere(); | |
| 1448 } | |
| 1449 } | |
| 1450 | |
| 342 | 1451 //////////////////////////////////////////////////////////////////////// |
|
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1452 #if INCLUDE_ALL_GCS |
| 342 | 1453 |
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1454 void LIRGenerator::G1SATBCardTableModRef_pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
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1455 bool do_load, bool patch, CodeEmitInfo* info) { |
| 342 | 1456 // First we test whether marking is in progress. |
| 1457 BasicType flag_type; | |
| 1458 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { | |
| 1459 flag_type = T_INT; | |
| 1460 } else { | |
| 1461 guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, | |
| 1462 "Assumption"); | |
| 1463 flag_type = T_BYTE; | |
| 1464 } | |
| 1465 LIR_Opr thrd = getThreadPointer(); | |
| 1466 LIR_Address* mark_active_flag_addr = | |
| 1467 new LIR_Address(thrd, | |
| 1468 in_bytes(JavaThread::satb_mark_queue_offset() + | |
| 1469 PtrQueue::byte_offset_of_active()), | |
| 1470 flag_type); | |
| 1471 // Read the marking-in-progress flag. | |
| 1472 LIR_Opr flag_val = new_register(T_INT); | |
| 1473 __ load(mark_active_flag_addr, flag_val); | |
| 1474 __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0)); | |
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1475 |
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1476 LIR_PatchCode pre_val_patch_code = lir_patch_none; |
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1477 |
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1478 CodeStub* slow; |
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1479 |
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1480 if (do_load) { |
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1481 assert(pre_val == LIR_OprFact::illegalOpr, "sanity"); |
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1482 assert(addr_opr != LIR_OprFact::illegalOpr, "sanity"); |
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1483 |
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1484 if (patch) |
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1485 pre_val_patch_code = lir_patch_normal; |
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1486 |
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1487 pre_val = new_register(T_OBJECT); |
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1488 |
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1489 if (!addr_opr->is_address()) { |
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1490 assert(addr_opr->is_register(), "must be"); |
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1491 addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, T_OBJECT)); |
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1492 } |
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1493 slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code, info); |
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1494 } else { |
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1495 assert(addr_opr == LIR_OprFact::illegalOpr, "sanity"); |
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1496 assert(pre_val->is_register(), "must be"); |
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1497 assert(pre_val->type() == T_OBJECT, "must be an object"); |
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1498 assert(info == NULL, "sanity"); |
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1499 |
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1500 slow = new G1PreBarrierStub(pre_val); |
| 342 | 1501 } |
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1502 |
| 342 | 1503 __ branch(lir_cond_notEqual, T_INT, slow); |
| 1504 __ branch_destination(slow->continuation()); | |
| 1505 } | |
| 1506 | |
| 1507 void LIRGenerator::G1SATBCardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { | |
| 1508 // If the "new_val" is a constant NULL, no barrier is necessary. | |
| 1509 if (new_val->is_constant() && | |
| 1510 new_val->as_constant_ptr()->as_jobject() == NULL) return; | |
| 1511 | |
| 1512 if (!new_val->is_register()) { | |
| 1572 | 1513 LIR_Opr new_val_reg = new_register(T_OBJECT); |
| 342 | 1514 if (new_val->is_constant()) { |
| 1515 __ move(new_val, new_val_reg); | |
| 1516 } else { | |
| 1517 __ leal(new_val, new_val_reg); | |
| 1518 } | |
| 1519 new_val = new_val_reg; | |
| 1520 } | |
| 1521 assert(new_val->is_register(), "must be a register at this point"); | |
| 1522 | |
| 1523 if (addr->is_address()) { | |
| 1524 LIR_Address* address = addr->as_address_ptr(); | |
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1525 LIR_Opr ptr = new_pointer_register(); |
| 342 | 1526 if (!address->index()->is_valid() && address->disp() == 0) { |
| 1527 __ move(address->base(), ptr); | |
| 1528 } else { | |
| 1529 assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); | |
| 1530 __ leal(addr, ptr); | |
| 1531 } | |
| 1532 addr = ptr; | |
| 1533 } | |
| 1534 assert(addr->is_register(), "must be a register at this point"); | |
| 1535 | |
| 1536 LIR_Opr xor_res = new_pointer_register(); | |
| 1537 LIR_Opr xor_shift_res = new_pointer_register(); | |
| 1538 if (TwoOperandLIRForm ) { | |
| 1539 __ move(addr, xor_res); | |
| 1540 __ logical_xor(xor_res, new_val, xor_res); | |
| 1541 __ move(xor_res, xor_shift_res); | |
| 1542 __ unsigned_shift_right(xor_shift_res, | |
| 1543 LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), | |
| 1544 xor_shift_res, | |
| 1545 LIR_OprDesc::illegalOpr()); | |
| 1546 } else { | |
| 1547 __ logical_xor(addr, new_val, xor_res); | |
| 1548 __ unsigned_shift_right(xor_res, | |
| 1549 LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), | |
| 1550 xor_shift_res, | |
| 1551 LIR_OprDesc::illegalOpr()); | |
| 1552 } | |
| 1553 | |
| 1554 if (!new_val->is_register()) { | |
| 1572 | 1555 LIR_Opr new_val_reg = new_register(T_OBJECT); |
| 342 | 1556 __ leal(new_val, new_val_reg); |
| 1557 new_val = new_val_reg; | |
| 1558 } | |
| 1559 assert(new_val->is_register(), "must be a register at this point"); | |
| 1560 | |
| 1561 __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD)); | |
| 1562 | |
| 1563 CodeStub* slow = new G1PostBarrierStub(addr, new_val); | |
| 1572 | 1564 __ branch(lir_cond_notEqual, LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow); |
| 342 | 1565 __ branch_destination(slow->continuation()); |
| 1566 } | |
| 1567 | |
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1568 #endif // INCLUDE_ALL_GCS |
| 342 | 1569 //////////////////////////////////////////////////////////////////////// |
| 1570 | |
| 0 | 1571 void LIRGenerator::CardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
| 1572 | |
| 342 | 1573 assert(sizeof(*((CardTableModRefBS*)_bs)->byte_map_base) == sizeof(jbyte), "adjust this code"); |
| 1574 LIR_Const* card_table_base = new LIR_Const(((CardTableModRefBS*)_bs)->byte_map_base); | |
| 0 | 1575 if (addr->is_address()) { |
| 1576 LIR_Address* address = addr->as_address_ptr(); | |
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1577 // ptr cannot be an object because we use this barrier for array card marks |
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1578 // and addr can point in the middle of an array. |
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1579 LIR_Opr ptr = new_pointer_register(); |
| 0 | 1580 if (!address->index()->is_valid() && address->disp() == 0) { |
| 1581 __ move(address->base(), ptr); | |
| 1582 } else { | |
| 1583 assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); | |
| 1584 __ leal(addr, ptr); | |
| 1585 } | |
| 1586 addr = ptr; | |
| 1587 } | |
| 1588 assert(addr->is_register(), "must be a register at this point"); | |
| 1589 | |
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1590 #ifdef ARM |
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1591 // TODO: ARM - move to platform-dependent code |
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1592 LIR_Opr tmp = FrameMap::R14_opr; |
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1593 if (VM_Version::supports_movw()) { |
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1594 __ move((LIR_Opr)card_table_base, tmp); |
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1595 } else { |
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1596 __ move(new LIR_Address(FrameMap::Rthread_opr, in_bytes(JavaThread::card_table_base_offset()), T_ADDRESS), tmp); |
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1597 } |
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1598 |
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1599 CardTableModRefBS* ct = (CardTableModRefBS*)_bs; |
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1600 LIR_Address *card_addr = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTableModRefBS::card_shift, 0, T_BYTE); |
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1601 if(((int)ct->byte_map_base & 0xff) == 0) { |
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1602 __ move(tmp, card_addr); |
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1603 } else { |
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1604 LIR_Opr tmp_zero = new_register(T_INT); |
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1605 __ move(LIR_OprFact::intConst(0), tmp_zero); |
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1606 __ move(tmp_zero, card_addr); |
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1607 } |
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1608 #else // ARM |
| 0 | 1609 LIR_Opr tmp = new_pointer_register(); |
| 1610 if (TwoOperandLIRForm) { | |
| 1611 __ move(addr, tmp); | |
| 1612 __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp); | |
| 1613 } else { | |
| 1614 __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp); | |
| 1615 } | |
| 1616 if (can_inline_as_constant(card_table_base)) { | |
| 1617 __ move(LIR_OprFact::intConst(0), | |
| 1618 new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE)); | |
| 1619 } else { | |
| 1620 __ move(LIR_OprFact::intConst(0), | |
| 1621 new LIR_Address(tmp, load_constant(card_table_base), | |
| 1622 T_BYTE)); | |
| 1623 } | |
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1624 #endif // ARM |
| 0 | 1625 } |
| 1626 | |
| 1627 | |
| 1628 //------------------------field access-------------------------------------- | |
| 1629 | |
| 1630 // Comment copied form templateTable_i486.cpp | |
| 1631 // ---------------------------------------------------------------------------- | |
| 1632 // Volatile variables demand their effects be made known to all CPU's in | |
| 1633 // order. Store buffers on most chips allow reads & writes to reorder; the | |
| 1634 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
| 1635 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
| 1636 // reorder volatile references, the hardware also must not reorder them). | |
| 1637 // | |
| 1638 // According to the new Java Memory Model (JMM): | |
| 1639 // (1) All volatiles are serialized wrt to each other. | |
| 1640 // ALSO reads & writes act as aquire & release, so: | |
| 1641 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
| 1642 // the read float up to before the read. It's OK for non-volatile memory refs | |
| 1643 // that happen before the volatile read to float down below it. | |
| 1644 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
| 1645 // that happen BEFORE the write float down to after the write. It's OK for | |
| 1646 // non-volatile memory refs that happen after the volatile write to float up | |
| 1647 // before it. | |
| 1648 // | |
| 1649 // We only put in barriers around volatile refs (they are expensive), not | |
| 1650 // _between_ memory refs (that would require us to track the flavor of the | |
| 1651 // previous memory refs). Requirements (2) and (3) require some barriers | |
| 1652 // before volatile stores and after volatile loads. These nearly cover | |
| 1653 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
| 1654 // case is placed after volatile-stores although it could just as well go | |
| 1655 // before volatile-loads. | |
| 1656 | |
| 1657 | |
| 1658 void LIRGenerator::do_StoreField(StoreField* x) { | |
| 1659 bool needs_patching = x->needs_patching(); | |
| 1660 bool is_volatile = x->field()->is_volatile(); | |
| 1661 BasicType field_type = x->field_type(); | |
| 1662 bool is_oop = (field_type == T_ARRAY || field_type == T_OBJECT); | |
| 1663 | |
| 1664 CodeEmitInfo* info = NULL; | |
| 1665 if (needs_patching) { | |
| 1666 assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); | |
| 1667 info = state_for(x, x->state_before()); | |
| 1668 } else if (x->needs_null_check()) { | |
| 1669 NullCheck* nc = x->explicit_null_check(); | |
| 1670 if (nc == NULL) { | |
| 1819 | 1671 info = state_for(x); |
| 0 | 1672 } else { |
| 1673 info = state_for(nc); | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 | |
| 1678 LIRItem object(x->obj(), this); | |
| 1679 LIRItem value(x->value(), this); | |
| 1680 | |
| 1681 object.load_item(); | |
| 1682 | |
| 1683 if (is_volatile || needs_patching) { | |
| 1684 // load item if field is volatile (fewer special cases for volatiles) | |
| 1685 // load item if field not initialized | |
| 1686 // load item if field not constant | |
| 1687 // because of code patching we cannot inline constants | |
| 1688 if (field_type == T_BYTE || field_type == T_BOOLEAN) { | |
| 1689 value.load_byte_item(); | |
| 1690 } else { | |
| 1691 value.load_item(); | |
| 1692 } | |
| 1693 } else { | |
| 1694 value.load_for_store(field_type); | |
| 1695 } | |
| 1696 | |
| 1697 set_no_result(x); | |
| 1698 | |
| 1819 | 1699 #ifndef PRODUCT |
| 0 | 1700 if (PrintNotLoaded && needs_patching) { |
| 1701 tty->print_cr(" ###class not loaded at store_%s bci %d", | |
| 1819 | 1702 x->is_static() ? "static" : "field", x->printable_bci()); |
| 0 | 1703 } |
| 1819 | 1704 #endif |
| 0 | 1705 |
| 1706 if (x->needs_null_check() && | |
| 1707 (needs_patching || | |
| 1708 MacroAssembler::needs_explicit_null_check(x->offset()))) { | |
| 1709 // emit an explicit null check because the offset is too large | |
| 1710 __ null_check(object.result(), new CodeEmitInfo(info)); | |
| 1711 } | |
| 1712 | |
| 1713 LIR_Address* address; | |
| 1714 if (needs_patching) { | |
| 1715 // we need to patch the offset in the instruction so don't allow | |
| 1716 // generate_address to try to be smart about emitting the -1. | |
| 1717 // Otherwise the patching code won't know how to find the | |
| 1718 // instruction to patch. | |
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1719 address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
| 0 | 1720 } else { |
| 1721 address = generate_address(object.result(), x->offset(), field_type); | |
| 1722 } | |
| 1723 | |
| 1724 if (is_volatile && os::is_MP()) { | |
| 1725 __ membar_release(); | |
| 1726 } | |
| 1727 | |
| 342 | 1728 if (is_oop) { |
| 1729 // Do the pre-write barrier, if any. | |
| 1730 pre_barrier(LIR_OprFact::address(address), | |
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1731 LIR_OprFact::illegalOpr /* pre_val */, |
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1732 true /* do_load*/, |
| 342 | 1733 needs_patching, |
| 1734 (info ? new CodeEmitInfo(info) : NULL)); | |
| 1735 } | |
| 1736 | |
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1737 bool needs_atomic_access = is_volatile || AlwaysAtomicAccesses; |
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1738 if (needs_atomic_access && !needs_patching) { |
| 0 | 1739 volatile_field_store(value.result(), address, info); |
| 1740 } else { | |
| 1741 LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; | |
| 1742 __ store(value.result(), address, info, patch_code); | |
| 1743 } | |
| 1744 | |
| 1745 if (is_oop) { | |
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1746 // Store to object so mark the card of the header |
| 0 | 1747 post_barrier(object.result(), value.result()); |
| 1748 } | |
| 1749 | |
| 1750 if (is_volatile && os::is_MP()) { | |
| 1751 __ membar(); | |
| 1752 } | |
| 1753 } | |
| 1754 | |
| 1755 | |
| 1756 void LIRGenerator::do_LoadField(LoadField* x) { | |
| 1757 bool needs_patching = x->needs_patching(); | |
| 1758 bool is_volatile = x->field()->is_volatile(); | |
| 1759 BasicType field_type = x->field_type(); | |
| 1760 | |
| 1761 CodeEmitInfo* info = NULL; | |
| 1762 if (needs_patching) { | |
| 1763 assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); | |
| 1764 info = state_for(x, x->state_before()); | |
| 1765 } else if (x->needs_null_check()) { | |
| 1766 NullCheck* nc = x->explicit_null_check(); | |
| 1767 if (nc == NULL) { | |
| 1819 | 1768 info = state_for(x); |
| 0 | 1769 } else { |
| 1770 info = state_for(nc); | |
| 1771 } | |
| 1772 } | |
| 1773 | |
| 1774 LIRItem object(x->obj(), this); | |
| 1775 | |
| 1776 object.load_item(); | |
| 1777 | |
| 1819 | 1778 #ifndef PRODUCT |
| 0 | 1779 if (PrintNotLoaded && needs_patching) { |
| 1780 tty->print_cr(" ###class not loaded at load_%s bci %d", | |
| 1819 | 1781 x->is_static() ? "static" : "field", x->printable_bci()); |
| 0 | 1782 } |
| 1819 | 1783 #endif |
| 0 | 1784 |
| 8860 | 1785 bool stress_deopt = StressLoopInvariantCodeMotion && info && info->deoptimize_on_exception(); |
| 0 | 1786 if (x->needs_null_check() && |
| 1787 (needs_patching || | |
| 8860 | 1788 MacroAssembler::needs_explicit_null_check(x->offset()) || |
| 1789 stress_deopt)) { | |
| 1790 LIR_Opr obj = object.result(); | |
| 1791 if (stress_deopt) { | |
| 1792 obj = new_register(T_OBJECT); | |
| 1793 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1794 } | |
| 0 | 1795 // emit an explicit null check because the offset is too large |
| 8860 | 1796 __ null_check(obj, new CodeEmitInfo(info)); |
| 0 | 1797 } |
| 1798 | |
| 1799 LIR_Opr reg = rlock_result(x, field_type); | |
| 1800 LIR_Address* address; | |
| 1801 if (needs_patching) { | |
| 1802 // we need to patch the offset in the instruction so don't allow | |
| 1803 // generate_address to try to be smart about emitting the -1. | |
| 1804 // Otherwise the patching code won't know how to find the | |
| 1805 // instruction to patch. | |
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1806 address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
| 0 | 1807 } else { |
| 1808 address = generate_address(object.result(), x->offset(), field_type); | |
| 1809 } | |
| 1810 | |
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1811 bool needs_atomic_access = is_volatile || AlwaysAtomicAccesses; |
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1812 if (needs_atomic_access && !needs_patching) { |
| 0 | 1813 volatile_field_load(address, reg, info); |
| 1814 } else { | |
| 1815 LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; | |
| 1816 __ load(address, reg, info, patch_code); | |
| 1817 } | |
| 1818 | |
| 1819 if (is_volatile && os::is_MP()) { | |
| 1820 __ membar_acquire(); | |
| 1821 } | |
| 1822 } | |
| 1823 | |
| 1824 | |
| 1825 //------------------------java.nio.Buffer.checkIndex------------------------ | |
| 1826 | |
| 1827 // int java.nio.Buffer.checkIndex(int) | |
| 1828 void LIRGenerator::do_NIOCheckIndex(Intrinsic* x) { | |
| 1829 // NOTE: by the time we are in checkIndex() we are guaranteed that | |
| 1830 // the buffer is non-null (because checkIndex is package-private and | |
| 1831 // only called from within other methods in the buffer). | |
| 1832 assert(x->number_of_arguments() == 2, "wrong type"); | |
| 1833 LIRItem buf (x->argument_at(0), this); | |
| 1834 LIRItem index(x->argument_at(1), this); | |
| 1835 buf.load_item(); | |
| 1836 index.load_item(); | |
| 1837 | |
| 1838 LIR_Opr result = rlock_result(x); | |
| 1839 if (GenerateRangeChecks) { | |
| 1840 CodeEmitInfo* info = state_for(x); | |
| 1841 CodeStub* stub = new RangeCheckStub(info, index.result(), true); | |
| 1842 if (index.result()->is_constant()) { | |
| 1843 cmp_mem_int(lir_cond_belowEqual, buf.result(), java_nio_Buffer::limit_offset(), index.result()->as_jint(), info); | |
| 1844 __ branch(lir_cond_belowEqual, T_INT, stub); | |
| 1845 } else { | |
| 1846 cmp_reg_mem(lir_cond_aboveEqual, index.result(), buf.result(), | |
| 1847 java_nio_Buffer::limit_offset(), T_INT, info); | |
| 1848 __ branch(lir_cond_aboveEqual, T_INT, stub); | |
| 1849 } | |
| 1850 __ move(index.result(), result); | |
| 1851 } else { | |
| 1852 // Just load the index into the result register | |
| 1853 __ move(index.result(), result); | |
| 1854 } | |
| 1855 } | |
| 1856 | |
| 1857 | |
| 1858 //------------------------array access-------------------------------------- | |
| 1859 | |
| 1860 | |
| 1861 void LIRGenerator::do_ArrayLength(ArrayLength* x) { | |
| 1862 LIRItem array(x->array(), this); | |
| 1863 array.load_item(); | |
| 1864 LIR_Opr reg = rlock_result(x); | |
| 1865 | |
| 1866 CodeEmitInfo* info = NULL; | |
| 1867 if (x->needs_null_check()) { | |
| 1868 NullCheck* nc = x->explicit_null_check(); | |
| 1869 if (nc == NULL) { | |
| 1870 info = state_for(x); | |
| 1871 } else { | |
| 1872 info = state_for(nc); | |
| 1873 } | |
| 8860 | 1874 if (StressLoopInvariantCodeMotion && info->deoptimize_on_exception()) { |
| 1875 LIR_Opr obj = new_register(T_OBJECT); | |
| 1876 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1877 __ null_check(obj, new CodeEmitInfo(info)); | |
| 1878 } | |
| 0 | 1879 } |
| 1880 __ load(new LIR_Address(array.result(), arrayOopDesc::length_offset_in_bytes(), T_INT), reg, info, lir_patch_none); | |
| 1881 } | |
| 1882 | |
| 1883 | |
| 1884 void LIRGenerator::do_LoadIndexed(LoadIndexed* x) { | |
| 1885 bool use_length = x->length() != NULL; | |
| 1886 LIRItem array(x->array(), this); | |
| 1887 LIRItem index(x->index(), this); | |
| 1888 LIRItem length(this); | |
| 8860 | 1889 bool needs_range_check = x->compute_needs_range_check(); |
| 1890 | |
| 1891 if (use_length && needs_range_check) { | |
| 1892 length.set_instruction(x->length()); | |
| 1893 length.load_item(); | |
| 0 | 1894 } |
| 1895 | |
| 1896 array.load_item(); | |
| 1897 if (index.is_constant() && can_inline_as_constant(x->index())) { | |
| 1898 // let it be a constant | |
| 1899 index.dont_load_item(); | |
| 1900 } else { | |
| 1901 index.load_item(); | |
| 1902 } | |
| 1903 | |
| 1904 CodeEmitInfo* range_check_info = state_for(x); | |
| 1905 CodeEmitInfo* null_check_info = NULL; | |
| 1906 if (x->needs_null_check()) { | |
| 1907 NullCheck* nc = x->explicit_null_check(); | |
| 1908 if (nc != NULL) { | |
| 1909 null_check_info = state_for(nc); | |
| 1910 } else { | |
| 1911 null_check_info = range_check_info; | |
| 1912 } | |
| 8860 | 1913 if (StressLoopInvariantCodeMotion && null_check_info->deoptimize_on_exception()) { |
| 1914 LIR_Opr obj = new_register(T_OBJECT); | |
| 1915 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1916 __ null_check(obj, new CodeEmitInfo(null_check_info)); | |
| 1917 } | |
| 0 | 1918 } |
| 1919 | |
| 1920 // emit array address setup early so it schedules better | |
| 1921 LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), false); | |
| 1922 | |
| 1923 if (GenerateRangeChecks && needs_range_check) { | |
| 8860 | 1924 if (StressLoopInvariantCodeMotion && range_check_info->deoptimize_on_exception()) { |
| 1925 __ branch(lir_cond_always, T_ILLEGAL, new RangeCheckStub(range_check_info, index.result())); | |
| 1926 } else if (use_length) { | |
| 0 | 1927 // TODO: use a (modified) version of array_range_check that does not require a |
| 1928 // constant length to be loaded to a register | |
| 1929 __ cmp(lir_cond_belowEqual, length.result(), index.result()); | |
| 1930 __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); | |
| 1931 } else { | |
| 1932 array_range_check(array.result(), index.result(), null_check_info, range_check_info); | |
| 1933 // The range check performs the null check, so clear it out for the load | |
| 1934 null_check_info = NULL; | |
| 1935 } | |
| 1936 } | |
| 1937 | |
| 1938 __ move(array_addr, rlock_result(x, x->elt_type()), null_check_info); | |
| 1939 } | |
| 1940 | |
| 1941 | |
| 1942 void LIRGenerator::do_NullCheck(NullCheck* x) { | |
| 1943 if (x->can_trap()) { | |
| 1944 LIRItem value(x->obj(), this); | |
| 1945 value.load_item(); | |
| 1946 CodeEmitInfo* info = state_for(x); | |
| 1947 __ null_check(value.result(), info); | |
| 1948 } | |
| 1949 } | |
| 1950 | |
| 1951 | |
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1952 void LIRGenerator::do_TypeCast(TypeCast* x) { |
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1953 LIRItem value(x->obj(), this); |
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1954 value.load_item(); |
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1955 // the result is the same as from the node we are casting |
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1956 set_result(x, value.result()); |
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1957 } |
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1958 |
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1959 |
| 0 | 1960 void LIRGenerator::do_Throw(Throw* x) { |
| 1961 LIRItem exception(x->exception(), this); | |
| 1962 exception.load_item(); | |
| 1963 set_no_result(x); | |
| 1964 LIR_Opr exception_opr = exception.result(); | |
| 1965 CodeEmitInfo* info = state_for(x, x->state()); | |
| 1966 | |
| 1967 #ifndef PRODUCT | |
| 1968 if (PrintC1Statistics) { | |
| 1783 | 1969 increment_counter(Runtime1::throw_count_address(), T_INT); |
| 0 | 1970 } |
| 1971 #endif | |
| 1972 | |
| 1973 // check if the instruction has an xhandler in any of the nested scopes | |
| 1974 bool unwind = false; | |
| 1975 if (info->exception_handlers()->length() == 0) { | |
| 1976 // this throw is not inside an xhandler | |
| 1977 unwind = true; | |
| 1978 } else { | |
| 1979 // get some idea of the throw type | |
| 1980 bool type_is_exact = true; | |
| 1981 ciType* throw_type = x->exception()->exact_type(); | |
| 1982 if (throw_type == NULL) { | |
| 1983 type_is_exact = false; | |
| 1984 throw_type = x->exception()->declared_type(); | |
| 1985 } | |
| 1986 if (throw_type != NULL && throw_type->is_instance_klass()) { | |
| 1987 ciInstanceKlass* throw_klass = (ciInstanceKlass*)throw_type; | |
| 1988 unwind = !x->exception_handlers()->could_catch(throw_klass, type_is_exact); | |
| 1989 } | |
| 1990 } | |
| 1991 | |
| 1992 // do null check before moving exception oop into fixed register | |
| 1993 // to avoid a fixed interval with an oop during the null check. | |
| 1994 // Use a copy of the CodeEmitInfo because debug information is | |
| 1995 // different for null_check and throw. | |
| 1996 if (GenerateCompilerNullChecks && | |
| 1997 (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) { | |
| 1998 // if the exception object wasn't created using new then it might be null. | |
| 1819 | 1999 __ null_check(exception_opr, new CodeEmitInfo(info, x->state()->copy(ValueStack::ExceptionState, x->state()->bci()))); |
| 0 | 2000 } |
| 2001 | |
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2002 if (compilation()->env()->jvmti_can_post_on_exceptions()) { |
| 0 | 2003 // we need to go through the exception lookup path to get JVMTI |
| 2004 // notification done | |
| 2005 unwind = false; | |
| 2006 } | |
| 2007 | |
| 2008 // move exception oop into fixed register | |
| 2009 __ move(exception_opr, exceptionOopOpr()); | |
| 2010 | |
| 2011 if (unwind) { | |
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2012 __ unwind_exception(exceptionOopOpr()); |
| 0 | 2013 } else { |
| 2014 __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info); | |
| 2015 } | |
| 2016 } | |
| 2017 | |
| 2018 | |
| 2019 void LIRGenerator::do_RoundFP(RoundFP* x) { | |
| 2020 LIRItem input(x->input(), this); | |
| 2021 input.load_item(); | |
| 2022 LIR_Opr input_opr = input.result(); | |
| 2023 assert(input_opr->is_register(), "why round if value is not in a register?"); | |
| 2024 assert(input_opr->is_single_fpu() || input_opr->is_double_fpu(), "input should be floating-point value"); | |
| 2025 if (input_opr->is_single_fpu()) { | |
| 2026 set_result(x, round_item(input_opr)); // This code path not currently taken | |
| 2027 } else { | |
| 2028 LIR_Opr result = new_register(T_DOUBLE); | |
| 2029 set_vreg_flag(result, must_start_in_memory); | |
| 2030 __ roundfp(input_opr, LIR_OprFact::illegalOpr, result); | |
| 2031 set_result(x, result); | |
| 2032 } | |
| 2033 } | |
| 2034 | |
| 2035 void LIRGenerator::do_UnsafeGetRaw(UnsafeGetRaw* x) { | |
| 2036 LIRItem base(x->base(), this); | |
| 2037 LIRItem idx(this); | |
| 2038 | |
| 2039 base.load_item(); | |
| 2040 if (x->has_index()) { | |
| 2041 idx.set_instruction(x->index()); | |
| 2042 idx.load_nonconstant(); | |
| 2043 } | |
| 2044 | |
| 2045 LIR_Opr reg = rlock_result(x, x->basic_type()); | |
| 2046 | |
| 2047 int log2_scale = 0; | |
| 2048 if (x->has_index()) { | |
| 2049 assert(x->index()->type()->tag() == intTag, "should not find non-int index"); | |
| 2050 log2_scale = x->log2_scale(); | |
| 2051 } | |
| 2052 | |
| 2053 assert(!x->has_index() || idx.value() == x->index(), "should match"); | |
| 2054 | |
| 2055 LIR_Opr base_op = base.result(); | |
| 2056 #ifndef _LP64 | |
| 2057 if (x->base()->type()->tag() == longTag) { | |
| 2058 base_op = new_register(T_INT); | |
| 2059 __ convert(Bytecodes::_l2i, base.result(), base_op); | |
| 2060 } else { | |
| 2061 assert(x->base()->type()->tag() == intTag, "must be"); | |
| 2062 } | |
| 2063 #endif | |
| 2064 | |
| 2065 BasicType dst_type = x->basic_type(); | |
| 2066 LIR_Opr index_op = idx.result(); | |
| 2067 | |
| 2068 LIR_Address* addr; | |
| 2069 if (index_op->is_constant()) { | |
| 2070 assert(log2_scale == 0, "must not have a scale"); | |
| 2071 addr = new LIR_Address(base_op, index_op->as_jint(), dst_type); | |
| 2072 } else { | |
| 304 | 2073 #ifdef X86 |
| 1060 | 2074 #ifdef _LP64 |
| 2075 if (!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2076 LIR_Opr tmp = new_pointer_register(); | |
| 2077 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2078 index_op = tmp; | |
| 2079 } | |
| 2080 #endif | |
| 0 | 2081 addr = new LIR_Address(base_op, index_op, LIR_Address::Scale(log2_scale), 0, dst_type); |
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2082 #elif defined(ARM) |
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2083 addr = generate_address(base_op, index_op, log2_scale, 0, dst_type); |
| 0 | 2084 #else |
| 2085 if (index_op->is_illegal() || log2_scale == 0) { | |
| 1060 | 2086 #ifdef _LP64 |
| 2087 if (!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2088 LIR_Opr tmp = new_pointer_register(); | |
| 2089 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2090 index_op = tmp; | |
| 2091 } | |
| 2092 #endif | |
| 0 | 2093 addr = new LIR_Address(base_op, index_op, dst_type); |
| 2094 } else { | |
| 1060 | 2095 LIR_Opr tmp = new_pointer_register(); |
| 0 | 2096 __ shift_left(index_op, log2_scale, tmp); |
| 2097 addr = new LIR_Address(base_op, tmp, dst_type); | |
| 2098 } | |
| 2099 #endif | |
| 2100 } | |
| 2101 | |
| 2102 if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) { | |
| 2103 __ unaligned_move(addr, reg); | |
| 2104 } else { | |
| 2002 | 2105 if (dst_type == T_OBJECT && x->is_wide()) { |
| 2106 __ move_wide(addr, reg); | |
| 2107 } else { | |
| 2108 __ move(addr, reg); | |
| 2109 } | |
| 0 | 2110 } |
| 2111 } | |
| 2112 | |
| 2113 | |
| 2114 void LIRGenerator::do_UnsafePutRaw(UnsafePutRaw* x) { | |
| 2115 int log2_scale = 0; | |
| 2116 BasicType type = x->basic_type(); | |
| 2117 | |
| 2118 if (x->has_index()) { | |
| 2119 assert(x->index()->type()->tag() == intTag, "should not find non-int index"); | |
| 2120 log2_scale = x->log2_scale(); | |
| 2121 } | |
| 2122 | |
| 2123 LIRItem base(x->base(), this); | |
| 2124 LIRItem value(x->value(), this); | |
| 2125 LIRItem idx(this); | |
| 2126 | |
| 2127 base.load_item(); | |
| 2128 if (x->has_index()) { | |
| 2129 idx.set_instruction(x->index()); | |
| 2130 idx.load_item(); | |
| 2131 } | |
| 2132 | |
| 2133 if (type == T_BYTE || type == T_BOOLEAN) { | |
| 2134 value.load_byte_item(); | |
| 2135 } else { | |
| 2136 value.load_item(); | |
| 2137 } | |
| 2138 | |
| 2139 set_no_result(x); | |
| 2140 | |
| 2141 LIR_Opr base_op = base.result(); | |
| 2142 #ifndef _LP64 | |
| 2143 if (x->base()->type()->tag() == longTag) { | |
| 2144 base_op = new_register(T_INT); | |
| 2145 __ convert(Bytecodes::_l2i, base.result(), base_op); | |
| 2146 } else { | |
| 2147 assert(x->base()->type()->tag() == intTag, "must be"); | |
| 2148 } | |
| 2149 #endif | |
| 2150 | |
| 2151 LIR_Opr index_op = idx.result(); | |
| 2152 if (log2_scale != 0) { | |
| 2153 // temporary fix (platform dependent code without shift on Intel would be better) | |
| 1060 | 2154 index_op = new_pointer_register(); |
| 2155 #ifdef _LP64 | |
| 2156 if(idx.result()->type() == T_INT) { | |
| 2157 __ convert(Bytecodes::_i2l, idx.result(), index_op); | |
| 2158 } else { | |
| 2159 #endif | |
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2160 // TODO: ARM also allows embedded shift in the address |
| 1060 | 2161 __ move(idx.result(), index_op); |
| 2162 #ifdef _LP64 | |
| 2163 } | |
| 2164 #endif | |
| 0 | 2165 __ shift_left(index_op, log2_scale, index_op); |
| 2166 } | |
| 1060 | 2167 #ifdef _LP64 |
| 2168 else if(!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2169 LIR_Opr tmp = new_pointer_register(); | |
| 2170 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2171 index_op = tmp; | |
| 2172 } | |
| 2173 #endif | |
| 0 | 2174 |
| 2175 LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type()); | |
| 2176 __ move(value.result(), addr); | |
| 2177 } | |
| 2178 | |
| 2179 | |
| 2180 void LIRGenerator::do_UnsafeGetObject(UnsafeGetObject* x) { | |
| 2181 BasicType type = x->basic_type(); | |
| 2182 LIRItem src(x->object(), this); | |
| 2183 LIRItem off(x->offset(), this); | |
| 2184 | |
| 2185 off.load_item(); | |
| 2186 src.load_item(); | |
| 2187 | |
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2188 LIR_Opr value = rlock_result(x, x->basic_type()); |
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2189 |
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2190 get_Object_unsafe(value, src.result(), off.result(), type, x->is_volatile()); |
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2191 |
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2192 #if INCLUDE_ALL_GCS |
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2193 // We might be reading the value of the referent field of a |
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2194 // Reference object in order to attach it back to the live |
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2195 // object graph. If G1 is enabled then we need to record |
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2196 // the value that is being returned in an SATB log buffer. |
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2197 // |
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2198 // We need to generate code similar to the following... |
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2199 // |
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2200 // if (offset == java_lang_ref_Reference::referent_offset) { |
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2201 // if (src != NULL) { |
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2202 // if (klass(src)->reference_type() != REF_NONE) { |
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2203 // pre_barrier(..., value, ...); |
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2204 // } |
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2205 // } |
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2206 // } |
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2207 |
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2208 if (UseG1GC && type == T_OBJECT) { |
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2209 bool gen_pre_barrier = true; // Assume we need to generate pre_barrier. |
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2210 bool gen_offset_check = true; // Assume we need to generate the offset guard. |
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2211 bool gen_source_check = true; // Assume we need to check the src object for null. |
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2212 bool gen_type_check = true; // Assume we need to check the reference_type. |
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2213 |
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2214 if (off.is_constant()) { |
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2215 jlong off_con = (off.type()->is_int() ? |
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2216 (jlong) off.get_jint_constant() : |
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2217 off.get_jlong_constant()); |
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2218 |
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2219 |
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2220 if (off_con != (jlong) java_lang_ref_Reference::referent_offset) { |
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2221 // The constant offset is something other than referent_offset. |
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2222 // We can skip generating/checking the remaining guards and |
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2223 // skip generation of the code stub. |
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2224 gen_pre_barrier = false; |
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2225 } else { |
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2226 // The constant offset is the same as referent_offset - |
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2227 // we do not need to generate a runtime offset check. |
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2228 gen_offset_check = false; |
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2229 } |
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2230 } |
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2231 |
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2232 // We don't need to generate stub if the source object is an array |
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2233 if (gen_pre_barrier && src.type()->is_array()) { |
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2234 gen_pre_barrier = false; |
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2235 } |
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2236 |
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2237 if (gen_pre_barrier) { |
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2238 // We still need to continue with the checks. |
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2239 if (src.is_constant()) { |
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2240 ciObject* src_con = src.get_jobject_constant(); |
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2241 guarantee(src_con != NULL, "no source constant"); |
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2242 |
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2243 if (src_con->is_null_object()) { |
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2244 // The constant src object is null - We can skip |
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2245 // generating the code stub. |
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2246 gen_pre_barrier = false; |
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2247 } else { |
|
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|
2248 // Non-null constant source object. We still have to generate |
|
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|
2249 // the slow stub - but we don't need to generate the runtime |
|
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|
2250 // null object check. |
|
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|
2251 gen_source_check = false; |
|
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|
2252 } |
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|
2253 } |
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|
2254 } |
|
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|
2255 if (gen_pre_barrier && !PatchALot) { |
|
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|
2256 // Can the klass of object be statically determined to be |
|
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|
2257 // a sub-class of Reference? |
|
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|
2258 ciType* type = src.value()->declared_type(); |
|
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|
2259 if ((type != NULL) && type->is_loaded()) { |
|
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|
2260 if (type->is_subtype_of(compilation()->env()->Reference_klass())) { |
|
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|
2261 gen_type_check = false; |
|
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|
2262 } else if (type->is_klass() && |
|
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|
2263 !compilation()->env()->Object_klass()->is_subtype_of(type->as_klass())) { |
|
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|
2264 // Not Reference and not Object klass. |
|
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|
2265 gen_pre_barrier = false; |
|
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|
2266 } |
|
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|
2267 } |
|
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|
2268 } |
|
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|
2269 |
|
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|
2270 if (gen_pre_barrier) { |
|
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|
2271 LabelObj* Lcont = new LabelObj(); |
|
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|
2272 |
|
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|
2273 // We can have generate one runtime check here. Let's start with |
|
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|
2274 // the offset check. |
|
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|
2275 if (gen_offset_check) { |
|
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|
2276 // if (offset != referent_offset) -> continue |
|
3254
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|
2277 // If offset is an int then we can do the comparison with the |
|
59766fd005ff
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|
2278 // referent_offset constant; otherwise we need to move |
|
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|
2279 // referent_offset into a temporary register and generate |
|
59766fd005ff
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|
2280 // a reg-reg compare. |
|
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|
2281 |
|
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|
2282 LIR_Opr referent_off; |
|
59766fd005ff
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|
2283 |
|
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|
2284 if (off.type()->is_int()) { |
|
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|
2285 referent_off = LIR_OprFact::intConst(java_lang_ref_Reference::referent_offset); |
|
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|
2286 } else { |
|
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|
2287 assert(off.type()->is_long(), "what else?"); |
|
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|
2288 referent_off = new_register(T_LONG); |
|
59766fd005ff
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|
2289 __ move(LIR_OprFact::longConst(java_lang_ref_Reference::referent_offset), referent_off); |
|
59766fd005ff
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|
2290 } |
|
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|
2291 __ cmp(lir_cond_notEqual, off.result(), referent_off); |
|
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|
2292 __ branch(lir_cond_notEqual, as_BasicType(off.type()), Lcont->label()); |
|
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|
2293 } |
|
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|
2294 if (gen_source_check) { |
|
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|
2295 // offset is a const and equals referent offset |
|
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|
2296 // if (source == null) -> continue |
|
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|
2297 __ cmp(lir_cond_equal, src.result(), LIR_OprFact::oopConst(NULL)); |
|
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|
2298 __ branch(lir_cond_equal, T_OBJECT, Lcont->label()); |
|
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|
2299 } |
|
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|
2300 LIR_Opr src_klass = new_register(T_OBJECT); |
|
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|
2301 if (gen_type_check) { |
|
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|
2302 // We have determined that offset == referent_offset && src != null. |
|
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|
2303 // if (src->_klass->_reference_type == REF_NONE) -> continue |
|
12000
8d77d02828d9
8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
11080
diff
changeset
|
2304 __ move(new LIR_Address(src.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), src_klass); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6616
diff
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|
2305 LIR_Address* reference_type_addr = new LIR_Address(src_klass, in_bytes(InstanceKlass::reference_type_offset()), T_BYTE); |
|
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|
2306 LIR_Opr reference_type = new_register(T_INT); |
|
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|
2307 __ move(reference_type_addr, reference_type); |
|
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|
2308 __ cmp(lir_cond_equal, reference_type, LIR_OprFact::intConst(REF_NONE)); |
|
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|
2309 __ branch(lir_cond_equal, T_INT, Lcont->label()); |
|
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|
2310 } |
|
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|
2311 { |
|
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|
2312 // We have determined that src->_klass->_reference_type != REF_NONE |
|
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|
2313 // so register the value in the referent field with the pre-barrier. |
|
09aad8452938
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|
2314 pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */, |
|
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|
2315 value /* pre_val */, |
|
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|
2316 false /* do_load */, |
|
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|
2317 false /* patch */, |
|
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|
2318 NULL /* info */); |
|
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|
2319 } |
|
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|
2320 __ branch_destination(Lcont->label()); |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2321 } |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2322 } |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7425
diff
changeset
|
2323 #endif // INCLUDE_ALL_GCS |
|
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|
2324 |
| 0 | 2325 if (x->is_volatile() && os::is_MP()) __ membar_acquire(); |
| 2326 } | |
| 2327 | |
| 2328 | |
| 2329 void LIRGenerator::do_UnsafePutObject(UnsafePutObject* x) { | |
| 2330 BasicType type = x->basic_type(); | |
| 2331 LIRItem src(x->object(), this); | |
| 2332 LIRItem off(x->offset(), this); | |
| 2333 LIRItem data(x->value(), this); | |
| 2334 | |
| 2335 src.load_item(); | |
| 2336 if (type == T_BOOLEAN || type == T_BYTE) { | |
| 2337 data.load_byte_item(); | |
| 2338 } else { | |
| 2339 data.load_item(); | |
| 2340 } | |
| 2341 off.load_item(); | |
| 2342 | |
| 2343 set_no_result(x); | |
| 2344 | |
| 2345 if (x->is_volatile() && os::is_MP()) __ membar_release(); | |
| 2346 put_Object_unsafe(src.result(), off.result(), data.result(), type, x->is_volatile()); | |
|
2123
df307487d610
7010665: Misplaced membar in C1 implementation of Unsafe.get/putXXX
dholmes
parents:
2007
diff
changeset
|
2347 if (x->is_volatile() && os::is_MP()) __ membar(); |
| 0 | 2348 } |
| 2349 | |
| 2350 | |
| 2351 void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) { | |
| 2352 LIRItem src(x->object(), this); | |
| 2353 LIRItem off(x->offset(), this); | |
| 2354 | |
| 2355 src.load_item(); | |
| 2356 if (off.is_constant() && can_inline_as_constant(x->offset())) { | |
| 2357 // let it be a constant | |
| 2358 off.dont_load_item(); | |
| 2359 } else { | |
| 2360 off.load_item(); | |
| 2361 } | |
| 2362 | |
| 2363 set_no_result(x); | |
| 2364 | |
| 2365 LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE); | |
| 2366 __ prefetch(addr, is_store); | |
| 2367 } | |
| 2368 | |
| 2369 | |
| 2370 void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) { | |
| 2371 do_UnsafePrefetch(x, false); | |
| 2372 } | |
| 2373 | |
| 2374 | |
| 2375 void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { | |
| 2376 do_UnsafePrefetch(x, true); | |
| 2377 } | |
| 2378 | |
| 2379 | |
| 2380 void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) { | |
| 2381 int lng = x->length(); | |
| 2382 | |
| 2383 for (int i = 0; i < lng; i++) { | |
| 2384 SwitchRange* one_range = x->at(i); | |
| 2385 int low_key = one_range->low_key(); | |
| 2386 int high_key = one_range->high_key(); | |
| 2387 BlockBegin* dest = one_range->sux(); | |
| 2388 if (low_key == high_key) { | |
| 2389 __ cmp(lir_cond_equal, value, low_key); | |
| 2390 __ branch(lir_cond_equal, T_INT, dest); | |
| 2391 } else if (high_key - low_key == 1) { | |
| 2392 __ cmp(lir_cond_equal, value, low_key); | |
| 2393 __ branch(lir_cond_equal, T_INT, dest); | |
| 2394 __ cmp(lir_cond_equal, value, high_key); | |
| 2395 __ branch(lir_cond_equal, T_INT, dest); | |
| 2396 } else { | |
| 2397 LabelObj* L = new LabelObj(); | |
| 2398 __ cmp(lir_cond_less, value, low_key); | |
| 4816 | 2399 __ branch(lir_cond_less, T_INT, L->label()); |
| 0 | 2400 __ cmp(lir_cond_lessEqual, value, high_key); |
| 2401 __ branch(lir_cond_lessEqual, T_INT, dest); | |
| 2402 __ branch_destination(L->label()); | |
| 2403 } | |
| 2404 } | |
| 2405 __ jump(default_sux); | |
| 2406 } | |
| 2407 | |
| 2408 | |
| 2409 SwitchRangeArray* LIRGenerator::create_lookup_ranges(TableSwitch* x) { | |
| 2410 SwitchRangeList* res = new SwitchRangeList(); | |
| 2411 int len = x->length(); | |
| 2412 if (len > 0) { | |
| 2413 BlockBegin* sux = x->sux_at(0); | |
| 2414 int key = x->lo_key(); | |
| 2415 BlockBegin* default_sux = x->default_sux(); | |
| 2416 SwitchRange* range = new SwitchRange(key, sux); | |
| 2417 for (int i = 0; i < len; i++, key++) { | |
| 2418 BlockBegin* new_sux = x->sux_at(i); | |
| 2419 if (sux == new_sux) { | |
| 2420 // still in same range | |
| 2421 range->set_high_key(key); | |
| 2422 } else { | |
| 2423 // skip tests which explicitly dispatch to the default | |
| 2424 if (sux != default_sux) { | |
| 2425 res->append(range); | |
| 2426 } | |
| 2427 range = new SwitchRange(key, new_sux); | |
| 2428 } | |
| 2429 sux = new_sux; | |
| 2430 } | |
| 2431 if (res->length() == 0 || res->last() != range) res->append(range); | |
| 2432 } | |
| 2433 return res; | |
| 2434 } | |
| 2435 | |
| 2436 | |
| 2437 // we expect the keys to be sorted by increasing value | |
| 2438 SwitchRangeArray* LIRGenerator::create_lookup_ranges(LookupSwitch* x) { | |
| 2439 SwitchRangeList* res = new SwitchRangeList(); | |
| 2440 int len = x->length(); | |
| 2441 if (len > 0) { | |
| 2442 BlockBegin* default_sux = x->default_sux(); | |
| 2443 int key = x->key_at(0); | |
| 2444 BlockBegin* sux = x->sux_at(0); | |
| 2445 SwitchRange* range = new SwitchRange(key, sux); | |
| 2446 for (int i = 1; i < len; i++) { | |
| 2447 int new_key = x->key_at(i); | |
| 2448 BlockBegin* new_sux = x->sux_at(i); | |
| 2449 if (key+1 == new_key && sux == new_sux) { | |
| 2450 // still in same range | |
| 2451 range->set_high_key(new_key); | |
| 2452 } else { | |
| 2453 // skip tests which explicitly dispatch to the default | |
| 2454 if (range->sux() != default_sux) { | |
| 2455 res->append(range); | |
| 2456 } | |
| 2457 range = new SwitchRange(new_key, new_sux); | |
| 2458 } | |
| 2459 key = new_key; | |
| 2460 sux = new_sux; | |
| 2461 } | |
| 2462 if (res->length() == 0 || res->last() != range) res->append(range); | |
| 2463 } | |
| 2464 return res; | |
| 2465 } | |
| 2466 | |
| 2467 | |
| 2468 void LIRGenerator::do_TableSwitch(TableSwitch* x) { | |
| 2469 LIRItem tag(x->tag(), this); | |
| 2470 tag.load_item(); | |
| 2471 set_no_result(x); | |
| 2472 | |
| 2473 if (x->is_safepoint()) { | |
| 2474 __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); | |
| 2475 } | |
| 2476 | |
| 2477 // move values into phi locations | |
| 2478 move_to_phi(x->state()); | |
| 2479 | |
| 2480 int lo_key = x->lo_key(); | |
| 2481 int hi_key = x->hi_key(); | |
| 2482 int len = x->length(); | |
| 2483 LIR_Opr value = tag.result(); | |
| 2484 if (UseTableRanges) { | |
| 2485 do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); | |
| 2486 } else { | |
| 2487 for (int i = 0; i < len; i++) { | |
| 2488 __ cmp(lir_cond_equal, value, i + lo_key); | |
| 2489 __ branch(lir_cond_equal, T_INT, x->sux_at(i)); | |
| 2490 } | |
| 2491 __ jump(x->default_sux()); | |
| 2492 } | |
| 2493 } | |
| 2494 | |
| 2495 | |
| 2496 void LIRGenerator::do_LookupSwitch(LookupSwitch* x) { | |
| 2497 LIRItem tag(x->tag(), this); | |
| 2498 tag.load_item(); | |
| 2499 set_no_result(x); | |
| 2500 | |
| 2501 if (x->is_safepoint()) { | |
| 2502 __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); | |
| 2503 } | |
| 2504 | |
| 2505 // move values into phi locations | |
| 2506 move_to_phi(x->state()); | |
| 2507 | |
| 2508 LIR_Opr value = tag.result(); | |
| 2509 if (UseTableRanges) { | |
| 2510 do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); | |
| 2511 } else { | |
| 2512 int len = x->length(); | |
| 2513 for (int i = 0; i < len; i++) { | |
| 2514 __ cmp(lir_cond_equal, value, x->key_at(i)); | |
| 2515 __ branch(lir_cond_equal, T_INT, x->sux_at(i)); | |
| 2516 } | |
| 2517 __ jump(x->default_sux()); | |
| 2518 } | |
| 2519 } | |
| 2520 | |
| 2521 | |
| 2522 void LIRGenerator::do_Goto(Goto* x) { | |
| 2523 set_no_result(x); | |
| 2524 | |
| 2525 if (block()->next()->as_OsrEntry()) { | |
| 2526 // need to free up storage used for OSR entry point | |
| 2527 LIR_Opr osrBuffer = block()->next()->operand(); | |
| 2528 BasicTypeList signature; | |
| 2529 signature.append(T_INT); | |
| 2530 CallingConvention* cc = frame_map()->c_calling_convention(&signature); | |
| 2531 __ move(osrBuffer, cc->args()->at(0)); | |
| 2532 __ call_runtime_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_end), | |
| 2533 getThreadTemp(), LIR_OprFact::illegalOpr, cc->args()); | |
| 2534 } | |
| 2535 | |
| 2536 if (x->is_safepoint()) { | |
| 2537 ValueStack* state = x->state_before() ? x->state_before() : x->state(); | |
| 2538 | |
| 2539 // increment backedge counter if needed | |
| 1783 | 2540 CodeEmitInfo* info = state_for(x, state); |
|
3997
940513efe83a
7097679: Tiered: events with bad bci to Gotos reduced from Ifs
iveresov
parents:
3964
diff
changeset
|
2541 increment_backedge_counter(info, x->profiled_bci()); |
| 0 | 2542 CodeEmitInfo* safepoint_info = state_for(x, state); |
| 2543 __ safepoint(safepoint_poll_register(), safepoint_info); | |
| 2544 } | |
| 2545 | |
| 1783 | 2546 // Gotos can be folded Ifs, handle this case. |
| 2547 if (x->should_profile()) { | |
| 2548 ciMethod* method = x->profiled_method(); | |
| 2549 assert(method != NULL, "method should be set if branch is profiled"); | |
|
2007
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
2550 ciMethodData* md = method->method_data_or_null(); |
|
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
2551 assert(md != NULL, "Sanity"); |
| 1783 | 2552 ciProfileData* data = md->bci_to_data(x->profiled_bci()); |
| 2553 assert(data != NULL, "must have profiling data"); | |
| 2554 int offset; | |
| 2555 if (x->direction() == Goto::taken) { | |
| 2556 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 2557 offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); | |
| 2558 } else if (x->direction() == Goto::not_taken) { | |
| 2559 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 2560 offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); | |
| 2561 } else { | |
| 2562 assert(data->is_JumpData(), "need JumpData for branches"); | |
| 2563 offset = md->byte_offset_of_slot(data, JumpData::taken_offset()); | |
| 2564 } | |
|
6739
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
2565 LIR_Opr md_reg = new_register(T_METADATA); |
|
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
2566 __ metadata2reg(md->constant_encoding(), md_reg); |
| 1783 | 2567 |
| 2568 increment_counter(new LIR_Address(md_reg, offset, | |
| 2569 NOT_LP64(T_INT) LP64_ONLY(T_LONG)), DataLayout::counter_increment); | |
| 2570 } | |
| 2571 | |
| 0 | 2572 // emit phi-instruction move after safepoint since this simplifies |
| 2573 // describing the state as the safepoint. | |
| 2574 move_to_phi(x->state()); | |
| 2575 | |
| 2576 __ jump(x->default_sux()); | |
| 2577 } | |
| 2578 | |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2579 /** |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2580 * Emit profiling code if needed for arguments, parameters, return value types |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2581 * |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2582 * @param md MDO the code will update at runtime |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2583 * @param md_base_offset common offset in the MDO for this profile and subsequent ones |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2584 * @param md_offset offset in the MDO (on top of md_base_offset) for this profile |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2585 * @param profiled_k current profile |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2586 * @param obj IR node for the object to be profiled |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2587 * @param mdp register to hold the pointer inside the MDO (md + md_base_offset). |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2588 * Set once we find an update to make and use for next ones. |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2589 * @param not_null true if we know obj cannot be null |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2590 * @param signature_at_call_k signature at call for obj |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2591 * @param callee_signature_k signature of callee for obj |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2592 * at call and callee signatures differ at method handle call |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2593 * @return the only klass we know will ever be seen at this profile point |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2594 */ |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2595 ciKlass* LIRGenerator::profile_type(ciMethodData* md, int md_base_offset, int md_offset, intptr_t profiled_k, |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2596 Value obj, LIR_Opr& mdp, bool not_null, ciKlass* signature_at_call_k, |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2597 ciKlass* callee_signature_k) { |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2598 ciKlass* result = NULL; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2599 bool do_null = !not_null && !TypeEntries::was_null_seen(profiled_k); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2600 bool do_update = !TypeEntries::is_type_unknown(profiled_k); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2601 // known not to be null or null bit already set and already set to |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2602 // unknown: nothing we can do to improve profiling |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2603 if (!do_null && !do_update) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2604 return result; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2605 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2606 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2607 ciKlass* exact_klass = NULL; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2608 Compilation* comp = Compilation::current(); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2609 if (do_update) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2610 // try to find exact type, using CHA if possible, so that loading |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2611 // the klass from the object can be avoided |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2612 ciType* type = obj->exact_type(); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2613 if (type == NULL) { |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2614 type = obj->declared_type(); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2615 type = comp->cha_exact_type(type); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2616 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2617 assert(type == NULL || type->is_klass(), "type should be class"); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2618 exact_klass = (type != NULL && type->is_loaded()) ? (ciKlass*)type : NULL; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2619 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2620 do_update = exact_klass == NULL || ciTypeEntries::valid_ciklass(profiled_k) != exact_klass; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2621 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2622 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2623 if (!do_null && !do_update) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2624 return result; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2625 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2626 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2627 ciKlass* exact_signature_k = NULL; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2628 if (do_update) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2629 // Is the type from the signature exact (the only one possible)? |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2630 exact_signature_k = signature_at_call_k->exact_klass(); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2631 if (exact_signature_k == NULL) { |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2632 exact_signature_k = comp->cha_exact_type(signature_at_call_k); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2633 } else { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2634 result = exact_signature_k; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2635 // Known statically. No need to emit any code: prevent |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2636 // LIR_Assembler::emit_profile_type() from emitting useless code |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2637 profiled_k = ciTypeEntries::with_status(result, profiled_k); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2638 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2639 if (exact_signature_k != NULL && exact_klass != exact_signature_k) { |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2640 assert(exact_klass == NULL, "obj and signature disagree?"); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2641 // sometimes the type of the signature is better than the best type |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2642 // the compiler has |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2643 exact_klass = exact_signature_k; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2644 } |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2645 if (callee_signature_k != NULL && |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2646 callee_signature_k != signature_at_call_k) { |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2647 ciKlass* improved_klass = callee_signature_k->exact_klass(); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2648 if (improved_klass == NULL) { |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2649 improved_klass = comp->cha_exact_type(callee_signature_k); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2650 } |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2651 if (improved_klass != NULL && exact_klass != improved_klass) { |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2652 assert(exact_klass == NULL, "obj and signature disagree?"); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2653 exact_klass = exact_signature_k; |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2654 } |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2655 } |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
2656 do_update = exact_klass == NULL || ciTypeEntries::valid_ciklass(profiled_k) != exact_klass; |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2657 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2658 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2659 if (!do_null && !do_update) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2660 return result; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2661 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2662 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2663 if (mdp == LIR_OprFact::illegalOpr) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2664 mdp = new_register(T_METADATA); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
2665 __ metadata2reg(md->constant_encoding(), mdp); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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2666 if (md_base_offset != 0) { |
|
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|
2667 LIR_Address* base_type_address = new LIR_Address(mdp, md_base_offset, T_ADDRESS); |
|
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|
2668 mdp = new_pointer_register(); |
|
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|
2669 __ leal(LIR_OprFact::address(base_type_address), mdp); |
|
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|
2670 } |
|
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|
2671 } |
|
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|
2672 LIRItem value(obj, this); |
|
12875
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diff
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|
2673 value.load_item(); |
|
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|
2674 __ profile_type(new LIR_Address(mdp, md_offset, T_METADATA), |
|
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|
2675 value.result(), exact_klass, profiled_k, new_pointer_register(), not_null, exact_signature_k != NULL); |
|
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|
2676 return result; |
|
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|
2677 } |
|
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|
2678 |
|
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|
2679 // profile parameters on entry to the root of the compilation |
|
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|
2680 void LIRGenerator::profile_parameters(Base* x) { |
|
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|
2681 if (compilation()->profile_parameters()) { |
|
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|
2682 CallingConvention* args = compilation()->frame_map()->incoming_arguments(); |
|
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|
2683 ciMethodData* md = scope()->method()->method_data_or_null(); |
|
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|
2684 assert(md != NULL, "Sanity"); |
|
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|
2685 |
|
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diff
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|
2686 if (md->parameters_type_data() != NULL) { |
|
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|
2687 ciParametersTypeData* parameters_type_data = md->parameters_type_data(); |
|
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|
2688 ciTypeStackSlotEntries* parameters = parameters_type_data->parameters(); |
|
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|
2689 LIR_Opr mdp = LIR_OprFact::illegalOpr; |
|
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|
2690 for (int java_index = 0, i = 0, j = 0; j < parameters_type_data->number_of_parameters(); i++) { |
|
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|
2691 LIR_Opr src = args->at(i); |
|
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|
2692 assert(!src->is_illegal(), "check"); |
|
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|
2693 BasicType t = src->type(); |
|
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|
2694 if (t == T_OBJECT || t == T_ARRAY) { |
|
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|
2695 intptr_t profiled_k = parameters->type(j); |
|
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|
2696 Local* local = x->state()->local_at(java_index)->as_Local(); |
|
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|
2697 ciKlass* exact = profile_type(md, md->byte_offset_of_slot(parameters_type_data, ParametersTypeData::type_offset(0)), |
|
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|
2698 in_bytes(ParametersTypeData::type_offset(j)) - in_bytes(ParametersTypeData::type_offset(0)), |
|
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|
2699 profiled_k, local, mdp, false, local->declared_type()->as_klass(), NULL); |
|
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|
2700 // If the profile is known statically set it once for all and do not emit any code |
|
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|
2701 if (exact != NULL) { |
|
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|
2702 md->set_parameter_type(j, exact); |
|
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|
2703 } |
|
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|
2704 j++; |
|
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|
2705 } |
|
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|
2706 java_index += type2size[t]; |
|
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|
2707 } |
|
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|
2708 } |
|
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|
2709 } |
|
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|
2710 } |
|
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|
2711 |
| 0 | 2712 void LIRGenerator::do_Base(Base* x) { |
| 2713 __ std_entry(LIR_OprFact::illegalOpr); | |
| 2714 // Emit moves from physical registers / stack slots to virtual registers | |
| 2715 CallingConvention* args = compilation()->frame_map()->incoming_arguments(); | |
| 2716 IRScope* irScope = compilation()->hir()->top_scope(); | |
| 2717 int java_index = 0; | |
| 2718 for (int i = 0; i < args->length(); i++) { | |
| 2719 LIR_Opr src = args->at(i); | |
| 2720 assert(!src->is_illegal(), "check"); | |
| 2721 BasicType t = src->type(); | |
| 2722 | |
| 2723 // Types which are smaller than int are passed as int, so | |
| 2724 // correct the type which passed. | |
| 2725 switch (t) { | |
| 2726 case T_BYTE: | |
| 2727 case T_BOOLEAN: | |
| 2728 case T_SHORT: | |
| 2729 case T_CHAR: | |
| 2730 t = T_INT; | |
| 2731 break; | |
| 2732 } | |
| 2733 | |
| 2734 LIR_Opr dest = new_register(t); | |
| 2735 __ move(src, dest); | |
| 2736 | |
| 2737 // Assign new location to Local instruction for this local | |
| 2738 Local* local = x->state()->local_at(java_index)->as_Local(); | |
| 2739 assert(local != NULL, "Locals for incoming arguments must have been created"); | |
|
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|
2740 #ifndef __SOFTFP__ |
|
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1584
diff
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|
2741 // The java calling convention passes double as long and float as int. |
| 0 | 2742 assert(as_ValueType(t)->tag() == local->type()->tag(), "check"); |
|
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|
2743 #endif // __SOFTFP__ |
| 0 | 2744 local->set_operand(dest); |
| 2745 _instruction_for_operand.at_put_grow(dest->vreg_number(), local, NULL); | |
| 2746 java_index += type2size[t]; | |
| 2747 } | |
| 2748 | |
|
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c96bf21b756f
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diff
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|
2749 if (compilation()->env()->dtrace_method_probes()) { |
| 0 | 2750 BasicTypeList signature; |
| 2002 | 2751 signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
|
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12962
diff
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|
2752 signature.append(T_METADATA); // Method* |
| 0 | 2753 LIR_OprList* args = new LIR_OprList(); |
| 2754 args->append(getThreadPointer()); | |
|
6739
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6731
diff
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|
2755 LIR_Opr meth = new_register(T_METADATA); |
|
8a02ca5e5576
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|
2756 __ metadata2reg(method()->constant_encoding(), meth); |
| 0 | 2757 args->append(meth); |
| 2758 call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), voidType, NULL); | |
| 2759 } | |
| 2760 | |
| 2761 if (method()->is_synchronized()) { | |
| 2762 LIR_Opr obj; | |
| 2763 if (method()->is_static()) { | |
| 2764 obj = new_register(T_OBJECT); | |
|
989
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819
diff
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|
2765 __ oop2reg(method()->holder()->java_mirror()->constant_encoding(), obj); |
| 0 | 2766 } else { |
| 2767 Local* receiver = x->state()->local_at(0)->as_Local(); | |
| 2768 assert(receiver != NULL, "must already exist"); | |
| 2769 obj = receiver->operand(); | |
| 2770 } | |
| 2771 assert(obj->is_valid(), "must be valid"); | |
| 2772 | |
| 2773 if (method()->is_synchronized() && GenerateSynchronizationCode) { | |
| 2774 LIR_Opr lock = new_register(T_INT); | |
| 2775 __ load_stack_address_monitor(0, lock); | |
| 2776 | |
| 8860 | 2777 CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, x->check_flag(Instruction::DeoptimizeOnException)); |
| 0 | 2778 CodeStub* slow_path = new MonitorEnterStub(obj, lock, info); |
| 2779 | |
| 2780 // receiver is guaranteed non-NULL so don't need CodeEmitInfo | |
| 2781 __ lock_object(syncTempOpr(), obj, lock, new_register(T_OBJECT), slow_path, NULL); | |
| 2782 } | |
| 2783 } | |
| 2784 | |
| 2785 // increment invocation counters if needed | |
| 1783 | 2786 if (!method()->is_accessor()) { // Accessors do not have MDOs, so no counting. |
|
12962
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|
2787 profile_parameters(x); |
| 8860 | 2788 CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, false); |
| 1783 | 2789 increment_invocation_counter(info); |
| 2790 } | |
| 0 | 2791 |
| 2792 // all blocks with a successor must end with an unconditional jump | |
| 2793 // to the successor even if they are consecutive | |
| 2794 __ jump(x->default_sux()); | |
| 2795 } | |
| 2796 | |
| 2797 | |
| 2798 void LIRGenerator::do_OsrEntry(OsrEntry* x) { | |
| 2799 // construct our frame and model the production of incoming pointer | |
| 2800 // to the OSR buffer. | |
| 2801 __ osr_entry(LIR_Assembler::osrBufferPointer()); | |
| 2802 LIR_Opr result = rlock_result(x); | |
| 2803 __ move(LIR_Assembler::osrBufferPointer(), result); | |
| 2804 } | |
| 2805 | |
| 2806 | |
| 2807 void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) { | |
|
6616
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7192167: JSR 292: C1 has old broken code which needs to be removed
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|
2808 assert(args->length() == arg_list->length(), |
|
7a302948f5a4
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diff
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|
2809 err_msg_res("args=%d, arg_list=%d", args->length(), arg_list->length())); |
|
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diff
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|
2810 for (int i = x->has_receiver() ? 1 : 0; i < args->length(); i++) { |
| 0 | 2811 LIRItem* param = args->at(i); |
| 2812 LIR_Opr loc = arg_list->at(i); | |
| 2813 if (loc->is_register()) { | |
| 2814 param->load_item_force(loc); | |
| 2815 } else { | |
| 2816 LIR_Address* addr = loc->as_address_ptr(); | |
| 2817 param->load_for_store(addr->type()); | |
| 2002 | 2818 if (addr->type() == T_OBJECT) { |
| 2819 __ move_wide(param->result(), addr); | |
| 2820 } else | |
| 2821 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 2822 __ unaligned_move(param->result(), addr); | |
| 2823 } else { | |
| 2824 __ move(param->result(), addr); | |
| 2825 } | |
| 0 | 2826 } |
| 2827 } | |
| 2828 | |
| 2829 if (x->has_receiver()) { | |
| 2830 LIRItem* receiver = args->at(0); | |
| 2831 LIR_Opr loc = arg_list->at(0); | |
| 2832 if (loc->is_register()) { | |
| 2833 receiver->load_item_force(loc); | |
| 2834 } else { | |
| 2835 assert(loc->is_address(), "just checking"); | |
| 2836 receiver->load_for_store(T_OBJECT); | |
| 2002 | 2837 __ move_wide(receiver->result(), loc->as_address_ptr()); |
| 0 | 2838 } |
| 2839 } | |
| 2840 } | |
| 2841 | |
| 2842 | |
| 2843 // Visits all arguments, returns appropriate items without loading them | |
| 2844 LIRItemList* LIRGenerator::invoke_visit_arguments(Invoke* x) { | |
| 2845 LIRItemList* argument_items = new LIRItemList(); | |
| 2846 if (x->has_receiver()) { | |
| 2847 LIRItem* receiver = new LIRItem(x->receiver(), this); | |
| 2848 argument_items->append(receiver); | |
| 2849 } | |
| 2850 for (int i = 0; i < x->number_of_arguments(); i++) { | |
| 2851 LIRItem* param = new LIRItem(x->argument_at(i), this); | |
| 2852 argument_items->append(param); | |
| 2853 } | |
| 2854 return argument_items; | |
| 2855 } | |
| 2856 | |
| 2857 | |
| 2858 // The invoke with receiver has following phases: | |
| 2859 // a) traverse and load/lock receiver; | |
| 2860 // b) traverse all arguments -> item-array (invoke_visit_argument) | |
| 2861 // c) push receiver on stack | |
| 2862 // d) load each of the items and push on stack | |
| 2863 // e) unlock receiver | |
| 2864 // f) move receiver into receiver-register %o0 | |
| 2865 // g) lock result registers and emit call operation | |
| 2866 // | |
| 2867 // Before issuing a call, we must spill-save all values on stack | |
| 2868 // that are in caller-save register. "spill-save" moves thos registers | |
| 2869 // either in a free callee-save register or spills them if no free | |
| 2870 // callee save register is available. | |
| 2871 // | |
| 2872 // The problem is where to invoke spill-save. | |
| 2873 // - if invoked between e) and f), we may lock callee save | |
| 2874 // register in "spill-save" that destroys the receiver register | |
| 2875 // before f) is executed | |
| 2876 // - if we rearange the f) to be earlier, by loading %o0, it | |
| 2877 // may destroy a value on the stack that is currently in %o0 | |
| 2878 // and is waiting to be spilled | |
| 2879 // - if we keep the receiver locked while doing spill-save, | |
| 2880 // we cannot spill it as it is spill-locked | |
| 2881 // | |
| 2882 void LIRGenerator::do_Invoke(Invoke* x) { | |
| 2883 CallingConvention* cc = frame_map()->java_calling_convention(x->signature(), true); | |
| 2884 | |
| 2885 LIR_OprList* arg_list = cc->args(); | |
| 2886 LIRItemList* args = invoke_visit_arguments(x); | |
| 2887 LIR_Opr receiver = LIR_OprFact::illegalOpr; | |
| 2888 | |
| 2889 // setup result register | |
| 2890 LIR_Opr result_register = LIR_OprFact::illegalOpr; | |
| 2891 if (x->type() != voidType) { | |
| 2892 result_register = result_register_for(x->type()); | |
| 2893 } | |
| 2894 | |
| 2895 CodeEmitInfo* info = state_for(x, x->state()); | |
| 2896 | |
| 2897 invoke_load_arguments(x, args, arg_list); | |
| 2898 | |
| 2899 if (x->has_receiver()) { | |
| 2900 args->at(0)->load_item_force(LIR_Assembler::receiverOpr()); | |
| 2901 receiver = args->at(0)->result(); | |
| 2902 } | |
| 2903 | |
| 2904 // emit invoke code | |
| 2905 bool optimized = x->target_is_loaded() && x->target_is_final(); | |
| 2906 assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match"); | |
| 2907 | |
| 1564 | 2908 // JSR 292 |
| 2909 // Preserve the SP over MethodHandle call sites. | |
| 2910 ciMethod* target = x->target(); | |
|
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2911 bool is_method_handle_invoke = (// %%% FIXME: Are both of these relevant? |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2912 target->is_method_handle_intrinsic() || |
|
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diff
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|
2913 target->is_compiled_lambda_form()); |
|
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diff
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|
2914 if (is_method_handle_invoke) { |
| 1564 | 2915 info->set_is_method_handle_invoke(true); |
| 2916 __ move(FrameMap::stack_pointer(), FrameMap::method_handle_invoke_SP_save_opr()); | |
| 2917 } | |
| 2918 | |
| 0 | 2919 switch (x->code()) { |
| 2920 case Bytecodes::_invokestatic: | |
| 1564 | 2921 __ call_static(target, result_register, |
| 0 | 2922 SharedRuntime::get_resolve_static_call_stub(), |
| 2923 arg_list, info); | |
| 2924 break; | |
| 2925 case Bytecodes::_invokespecial: | |
| 2926 case Bytecodes::_invokevirtual: | |
| 2927 case Bytecodes::_invokeinterface: | |
| 2928 // for final target we still produce an inline cache, in order | |
| 2929 // to be able to call mixed mode | |
| 2930 if (x->code() == Bytecodes::_invokespecial || optimized) { | |
| 1564 | 2931 __ call_opt_virtual(target, receiver, result_register, |
| 0 | 2932 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
| 2933 arg_list, info); | |
| 2934 } else if (x->vtable_index() < 0) { | |
| 1564 | 2935 __ call_icvirtual(target, receiver, result_register, |
| 0 | 2936 SharedRuntime::get_resolve_virtual_call_stub(), |
| 2937 arg_list, info); | |
| 2938 } else { | |
|
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6616
diff
changeset
|
2939 int entry_offset = InstanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size(); |
| 0 | 2940 int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes(); |
| 1564 | 2941 __ call_virtual(target, receiver, result_register, vtable_offset, arg_list, info); |
| 0 | 2942 } |
| 2943 break; | |
| 1295 | 2944 case Bytecodes::_invokedynamic: { |
| 1564 | 2945 __ call_dynamic(target, receiver, result_register, |
|
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diff
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|
2946 SharedRuntime::get_resolve_static_call_stub(), |
| 1295 | 2947 arg_list, info); |
| 2948 break; | |
| 2949 } | |
| 0 | 2950 default: |
|
6145
e2fe93124108
7174928: JSR 292: unresolved invokedynamic call sites deopt and osr infinitely
twisti
parents:
6143
diff
changeset
|
2951 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(x->code()))); |
| 0 | 2952 break; |
| 2953 } | |
| 2954 | |
| 1564 | 2955 // JSR 292 |
| 2956 // Restore the SP after MethodHandle call sites. | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6145
diff
changeset
|
2957 if (is_method_handle_invoke) { |
| 1564 | 2958 __ move(FrameMap::method_handle_invoke_SP_save_opr(), FrameMap::stack_pointer()); |
| 2959 } | |
| 2960 | |
| 0 | 2961 if (x->type()->is_float() || x->type()->is_double()) { |
| 2962 // Force rounding of results from non-strictfp when in strictfp | |
| 2963 // scope (or when we don't know the strictness of the callee, to | |
| 2964 // be safe.) | |
| 2965 if (method()->is_strict()) { | |
| 2966 if (!x->target_is_loaded() || !x->target_is_strictfp()) { | |
| 2967 result_register = round_item(result_register); | |
| 2968 } | |
| 2969 } | |
| 2970 } | |
| 2971 | |
| 2972 if (result_register->is_valid()) { | |
| 2973 LIR_Opr result = rlock_result(x); | |
| 2974 __ move(result_register, result); | |
| 2975 } | |
| 2976 } | |
| 2977 | |
| 2978 | |
| 2979 void LIRGenerator::do_FPIntrinsics(Intrinsic* x) { | |
| 2980 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 2981 LIRItem value (x->argument_at(0), this); | |
| 2982 LIR_Opr reg = rlock_result(x); | |
| 2983 value.load_item(); | |
| 2984 LIR_Opr tmp = force_to_spill(value.result(), as_BasicType(x->type())); | |
| 2985 __ move(tmp, reg); | |
| 2986 } | |
| 2987 | |
| 2988 | |
| 2989 | |
| 2990 // Code for : x->x() {x->cond()} x->y() ? x->tval() : x->fval() | |
| 2991 void LIRGenerator::do_IfOp(IfOp* x) { | |
| 2992 #ifdef ASSERT | |
| 2993 { | |
| 2994 ValueTag xtag = x->x()->type()->tag(); | |
| 2995 ValueTag ttag = x->tval()->type()->tag(); | |
| 2996 assert(xtag == intTag || xtag == objectTag, "cannot handle others"); | |
| 2997 assert(ttag == addressTag || ttag == intTag || ttag == objectTag || ttag == longTag, "cannot handle others"); | |
| 2998 assert(ttag == x->fval()->type()->tag(), "cannot handle others"); | |
| 2999 } | |
| 3000 #endif | |
| 3001 | |
| 3002 LIRItem left(x->x(), this); | |
| 3003 LIRItem right(x->y(), this); | |
| 3004 left.load_item(); | |
| 3005 if (can_inline_as_constant(right.value())) { | |
| 3006 right.dont_load_item(); | |
| 3007 } else { | |
| 3008 right.load_item(); | |
| 3009 } | |
| 3010 | |
| 3011 LIRItem t_val(x->tval(), this); | |
| 3012 LIRItem f_val(x->fval(), this); | |
| 3013 t_val.dont_load_item(); | |
| 3014 f_val.dont_load_item(); | |
| 3015 LIR_Opr reg = rlock_result(x); | |
| 3016 | |
| 3017 __ cmp(lir_cond(x->cond()), left.result(), right.result()); | |
|
2089
037c727f35fb
7009231: C1: Incorrect CAS code for longs on SPARC 32bit
iveresov
parents:
2007
diff
changeset
|
3018 __ cmove(lir_cond(x->cond()), t_val.result(), f_val.result(), reg, as_BasicType(x->x()->type())); |
| 0 | 3019 } |
| 3020 | |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3021 void LIRGenerator::do_RuntimeCall(address routine, int expected_arguments, Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3022 assert(x->number_of_arguments() == expected_arguments, "wrong type"); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3023 LIR_Opr reg = result_register_for(x->type()); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3024 __ call_runtime_leaf(routine, getThreadTemp(), |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3025 reg, new LIR_OprList()); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3026 LIR_Opr result = rlock_result(x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3027 __ move(reg, result); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3028 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3029 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3030 #ifdef TRACE_HAVE_INTRINSICS |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3031 void LIRGenerator::do_ThreadIDIntrinsic(Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3032 LIR_Opr thread = getThreadPointer(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3033 LIR_Opr osthread = new_pointer_register(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3034 __ move(new LIR_Address(thread, in_bytes(JavaThread::osthread_offset()), osthread->type()), osthread); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3035 size_t thread_id_size = OSThread::thread_id_size(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3036 if (thread_id_size == (size_t) BytesPerLong) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3037 LIR_Opr id = new_register(T_LONG); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3038 __ move(new LIR_Address(osthread, in_bytes(OSThread::thread_id_offset()), T_LONG), id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3039 __ convert(Bytecodes::_l2i, id, rlock_result(x)); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3040 } else if (thread_id_size == (size_t) BytesPerInt) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3041 __ move(new LIR_Address(osthread, in_bytes(OSThread::thread_id_offset()), T_INT), rlock_result(x)); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3042 } else { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3043 ShouldNotReachHere(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3044 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3045 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3046 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3047 void LIRGenerator::do_ClassIDIntrinsic(Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3048 CodeEmitInfo* info = state_for(x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3049 CodeEmitInfo* info2 = new CodeEmitInfo(info); // Clone for the second null check |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3050 BasicType klass_pointer_type = NOT_LP64(T_INT) LP64_ONLY(T_LONG); |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3051 assert(info != NULL, "must have info"); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3052 LIRItem arg(x->argument_at(1), this); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3053 arg.load_item(); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3054 LIR_Opr klass = new_pointer_register(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3055 __ move(new LIR_Address(arg.result(), java_lang_Class::klass_offset_in_bytes(), klass_pointer_type), klass, info); |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3056 LIR_Opr id = new_register(T_LONG); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3057 ByteSize offset = TRACE_ID_OFFSET; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3058 LIR_Address* trace_id_addr = new LIR_Address(klass, in_bytes(offset), T_LONG); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3059 __ move(trace_id_addr, id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3060 __ logical_or(id, LIR_OprFact::longConst(0x01l), id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3061 __ store(id, trace_id_addr); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3062 __ logical_and(id, LIR_OprFact::longConst(~0x3l), id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3063 __ move(id, rlock_result(x)); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3064 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3065 #endif |
| 0 | 3066 |
| 3067 void LIRGenerator::do_Intrinsic(Intrinsic* x) { | |
| 3068 switch (x->id()) { | |
| 3069 case vmIntrinsics::_intBitsToFloat : | |
| 3070 case vmIntrinsics::_doubleToRawLongBits : | |
| 3071 case vmIntrinsics::_longBitsToDouble : | |
| 3072 case vmIntrinsics::_floatToRawIntBits : { | |
| 3073 do_FPIntrinsics(x); | |
| 3074 break; | |
| 3075 } | |
| 3076 | |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3077 #ifdef TRACE_HAVE_INTRINSICS |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3078 case vmIntrinsics::_threadID: do_ThreadIDIntrinsic(x); break; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3079 case vmIntrinsics::_classID: do_ClassIDIntrinsic(x); break; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3080 case vmIntrinsics::_counterTime: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3081 do_RuntimeCall(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), 0, x); |
| 0 | 3082 break; |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3083 #endif |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3084 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3085 case vmIntrinsics::_currentTimeMillis: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3086 do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeMillis), 0, x); |
| 0 | 3087 break; |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3088 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3089 case vmIntrinsics::_nanoTime: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3090 do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeNanos), 0, x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
3091 break; |
| 0 | 3092 |
| 3093 case vmIntrinsics::_Object_init: do_RegisterFinalizer(x); break; | |
| 6135 | 3094 case vmIntrinsics::_isInstance: do_isInstance(x); break; |
| 0 | 3095 case vmIntrinsics::_getClass: do_getClass(x); break; |
| 3096 case vmIntrinsics::_currentThread: do_currentThread(x); break; | |
| 3097 | |
| 3098 case vmIntrinsics::_dlog: // fall through | |
| 3099 case vmIntrinsics::_dlog10: // fall through | |
| 3100 case vmIntrinsics::_dabs: // fall through | |
| 3101 case vmIntrinsics::_dsqrt: // fall through | |
| 3102 case vmIntrinsics::_dtan: // fall through | |
| 3103 case vmIntrinsics::_dsin : // fall through | |
|
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
3104 case vmIntrinsics::_dcos : // fall through |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
3105 case vmIntrinsics::_dexp : // fall through |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
3106 case vmIntrinsics::_dpow : do_MathIntrinsic(x); break; |
| 0 | 3107 case vmIntrinsics::_arraycopy: do_ArrayCopy(x); break; |
| 3108 | |
| 3109 // java.nio.Buffer.checkIndex | |
| 3110 case vmIntrinsics::_checkIndex: do_NIOCheckIndex(x); break; | |
| 3111 | |
| 3112 case vmIntrinsics::_compareAndSwapObject: | |
| 3113 do_CompareAndSwap(x, objectType); | |
| 3114 break; | |
| 3115 case vmIntrinsics::_compareAndSwapInt: | |
| 3116 do_CompareAndSwap(x, intType); | |
| 3117 break; | |
| 3118 case vmIntrinsics::_compareAndSwapLong: | |
| 3119 do_CompareAndSwap(x, longType); | |
| 3120 break; | |
| 3121 | |
| 7425 | 3122 case vmIntrinsics::_loadFence : |
| 3123 if (os::is_MP()) __ membar_acquire(); | |
| 3124 break; | |
| 3125 case vmIntrinsics::_storeFence: | |
| 3126 if (os::is_MP()) __ membar_release(); | |
| 3127 break; | |
| 3128 case vmIntrinsics::_fullFence : | |
| 3129 if (os::is_MP()) __ membar(); | |
| 3130 break; | |
| 3131 | |
|
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3132 case vmIntrinsics::_Reference_get: |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3133 do_Reference_get(x); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3134 break; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3135 |
|
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3136 case vmIntrinsics::_updateCRC32: |
|
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3137 case vmIntrinsics::_updateBytesCRC32: |
|
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3138 case vmIntrinsics::_updateByteBufferCRC32: |
|
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3139 do_update_CRC32(x); |
|
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3140 break; |
|
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10397
diff
changeset
|
3141 |
| 0 | 3142 default: ShouldNotReachHere(); break; |
| 3143 } | |
| 3144 } | |
| 3145 | |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3146 void LIRGenerator::profile_arguments(ProfileCall* x) { |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3147 if (compilation()->profile_arguments()) { |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3148 int bci = x->bci_of_invoke(); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3149 ciMethodData* md = x->method()->method_data_or_null(); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3150 ciProfileData* data = md->bci_to_data(bci); |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3151 if ((data->is_CallTypeData() && data->as_CallTypeData()->has_arguments()) || |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3152 (data->is_VirtualCallTypeData() && data->as_VirtualCallTypeData()->has_arguments())) { |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3153 ByteSize extra = data->is_CallTypeData() ? CallTypeData::args_data_offset() : VirtualCallTypeData::args_data_offset(); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3154 int base_offset = md->byte_offset_of_slot(data, extra); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3155 LIR_Opr mdp = LIR_OprFact::illegalOpr; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3156 ciTypeStackSlotEntries* args = data->is_CallTypeData() ? ((ciCallTypeData*)data)->args() : ((ciVirtualCallTypeData*)data)->args(); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3157 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3158 Bytecodes::Code bc = x->method()->java_code_at_bci(bci); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3159 int start = 0; |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3160 int stop = data->is_CallTypeData() ? ((ciCallTypeData*)data)->number_of_arguments() : ((ciVirtualCallTypeData*)data)->number_of_arguments(); |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3161 if (x->inlined() && x->callee()->is_static() && Bytecodes::has_receiver(bc)) { |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3162 // first argument is not profiled at call (method handle invoke) |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3163 assert(x->method()->raw_code_at_bci(bci) == Bytecodes::_invokehandle, "invokehandle expected"); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3164 start = 1; |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3165 } |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3166 ciSignature* callee_signature = x->callee()->signature(); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3167 // method handle call to virtual method |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3168 bool has_receiver = x->inlined() && !x->callee()->is_static() && !Bytecodes::has_receiver(bc); |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3169 ciSignatureStream callee_signature_stream(callee_signature, has_receiver ? x->callee()->holder() : NULL); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3170 |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3171 bool ignored_will_link; |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3172 ciSignature* signature_at_call = NULL; |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3173 x->method()->get_method_at_bci(bci, ignored_will_link, &signature_at_call); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3174 ciSignatureStream signature_at_call_stream(signature_at_call); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3175 |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3176 // if called through method handle invoke, some arguments may have been popped |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3177 for (int i = 0; i < stop && i+start < x->nb_profiled_args(); i++) { |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3178 int off = in_bytes(TypeEntriesAtCall::argument_type_offset(i)) - in_bytes(TypeEntriesAtCall::args_data_offset()); |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3179 ciKlass* exact = profile_type(md, base_offset, off, |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3180 args->type(i), x->profiled_arg_at(i+start), mdp, |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3181 !x->arg_needs_null_check(i+start), |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3182 signature_at_call_stream.next_klass(), callee_signature_stream.next_klass()); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3183 if (exact != NULL) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3184 md->set_argument_type(bci, i, exact); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3185 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3186 } |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3187 } else { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3188 #ifdef ASSERT |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3189 Bytecodes::Code code = x->method()->raw_code_at_bci(x->bci_of_invoke()); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3190 int n = x->nb_profiled_args(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3191 assert(MethodData::profile_parameters() && x->inlined() && |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3192 ((code == Bytecodes::_invokedynamic && n <= 1) || (code == Bytecodes::_invokehandle && n <= 2)), |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3193 "only at JSR292 bytecodes"); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3194 #endif |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3195 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3196 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3197 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3198 |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3199 // profile parameters on entry to an inlined method |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3200 void LIRGenerator::profile_parameters_at_call(ProfileCall* x) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3201 if (compilation()->profile_parameters() && x->inlined()) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3202 ciMethodData* md = x->callee()->method_data_or_null(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3203 if (md != NULL) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3204 ciParametersTypeData* parameters_type_data = md->parameters_type_data(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3205 if (parameters_type_data != NULL) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3206 ciTypeStackSlotEntries* parameters = parameters_type_data->parameters(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3207 LIR_Opr mdp = LIR_OprFact::illegalOpr; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3208 bool has_receiver = !x->callee()->is_static(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3209 ciSignature* sig = x->callee()->signature(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3210 ciSignatureStream sig_stream(sig, has_receiver ? x->callee()->holder() : NULL); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3211 int i = 0; // to iterate on the Instructions |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3212 Value arg = x->recv(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3213 bool not_null = false; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3214 int bci = x->bci_of_invoke(); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3215 Bytecodes::Code bc = x->method()->java_code_at_bci(bci); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3216 // The first parameter is the receiver so that's what we start |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3217 // with if it exists. One exception is method handle call to |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3218 // virtual method: the receiver is in the args list |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3219 if (arg == NULL || !Bytecodes::has_receiver(bc)) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3220 i = 1; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3221 arg = x->profiled_arg_at(0); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3222 not_null = !x->arg_needs_null_check(0); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3223 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3224 int k = 0; // to iterate on the profile data |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3225 for (;;) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3226 intptr_t profiled_k = parameters->type(k); |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3227 ciKlass* exact = profile_type(md, md->byte_offset_of_slot(parameters_type_data, ParametersTypeData::type_offset(0)), |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3228 in_bytes(ParametersTypeData::type_offset(k)) - in_bytes(ParametersTypeData::type_offset(0)), |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3229 profiled_k, arg, mdp, not_null, sig_stream.next_klass(), NULL); |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3230 // If the profile is known statically set it once for all and do not emit any code |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3231 if (exact != NULL) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3232 md->set_parameter_type(k, exact); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3233 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3234 k++; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3235 if (k >= parameters_type_data->number_of_parameters()) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3236 #ifdef ASSERT |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3237 int extra = 0; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3238 if (MethodData::profile_arguments() && TypeProfileParmsLimit != -1 && |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3239 x->nb_profiled_args() >= TypeProfileParmsLimit && |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3240 x->recv() != NULL && Bytecodes::has_receiver(bc)) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3241 extra += 1; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3242 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3243 assert(i == x->nb_profiled_args() - extra || (TypeProfileParmsLimit != -1 && TypeProfileArgsLimit > TypeProfileParmsLimit), "unused parameters?"); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3244 #endif |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3245 break; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3246 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3247 arg = x->profiled_arg_at(i); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3248 not_null = !x->arg_needs_null_check(i); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3249 i++; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3250 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3251 } |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3252 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3253 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3254 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3255 |
| 0 | 3256 void LIRGenerator::do_ProfileCall(ProfileCall* x) { |
| 3257 // Need recv in a temporary register so it interferes with the other temporaries | |
| 3258 LIR_Opr recv = LIR_OprFact::illegalOpr; | |
| 3259 LIR_Opr mdo = new_register(T_OBJECT); | |
| 1783 | 3260 // tmp is used to hold the counters on SPARC |
| 3261 LIR_Opr tmp = new_pointer_register(); | |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3262 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3263 if (x->nb_profiled_args() > 0) { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3264 profile_arguments(x); |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3265 } |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12868
diff
changeset
|
3266 |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3267 // profile parameters on inlined method entry including receiver |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3268 if (x->recv() != NULL || x->nb_profiled_args() > 0) { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3269 profile_parameters_at_call(x); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3270 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12955
diff
changeset
|
3271 |
| 0 | 3272 if (x->recv() != NULL) { |
| 3273 LIRItem value(x->recv(), this); | |
| 3274 value.load_item(); | |
| 3275 recv = new_register(T_OBJECT); | |
| 3276 __ move(value.result(), recv); | |
| 3277 } | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6145
diff
changeset
|
3278 __ profile_call(x->method(), x->bci_of_invoke(), x->callee(), mdo, recv, tmp, x->known_holder()); |
| 0 | 3279 } |
| 3280 | |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3281 void LIRGenerator::do_ProfileReturnType(ProfileReturnType* x) { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3282 int bci = x->bci_of_invoke(); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3283 ciMethodData* md = x->method()->method_data_or_null(); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3284 ciProfileData* data = md->bci_to_data(bci); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3285 assert(data->is_CallTypeData() || data->is_VirtualCallTypeData(), "wrong profile data type"); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3286 ciReturnTypeEntry* ret = data->is_CallTypeData() ? ((ciCallTypeData*)data)->ret() : ((ciVirtualCallTypeData*)data)->ret(); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3287 LIR_Opr mdp = LIR_OprFact::illegalOpr; |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3288 |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3289 bool ignored_will_link; |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3290 ciSignature* signature_at_call = NULL; |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3291 x->method()->get_method_at_bci(bci, ignored_will_link, &signature_at_call); |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3292 |
| 14260 | 3293 // The offset within the MDO of the entry to update may be too large |
| 3294 // to be used in load/store instructions on some platforms. So have | |
| 3295 // profile_type() compute the address of the profile in a register. | |
| 3296 ciKlass* exact = profile_type(md, md->byte_offset_of_slot(data, ret->type_offset()), 0, | |
|
13078
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3297 ret->type(), x->ret(), mdp, |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3298 !x->needs_null_check(), |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3299 signature_at_call->return_type()->as_klass(), |
|
e6ba215af802
8027631: "unexpected profiling mismatch" error with new type profiling
roland
parents:
12969
diff
changeset
|
3300 x->callee()->signature()->return_type()->as_klass()); |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3301 if (exact != NULL) { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3302 md->set_return_type(bci, exact); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3303 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3304 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
3305 |
| 1783 | 3306 void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) { |
| 3307 // We can safely ignore accessors here, since c2 will inline them anyway, | |
| 3308 // accessors are also always mature. | |
| 3309 if (!x->inlinee()->is_accessor()) { | |
| 3310 CodeEmitInfo* info = state_for(x, x->state(), true); | |
|
3964
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3756
diff
changeset
|
3311 // Notify the runtime very infrequently only to take care of counter overflows |
|
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3756
diff
changeset
|
3312 increment_event_counter_impl(info, x->inlinee(), (1 << Tier23InlineeNotifyFreqLog) - 1, InvocationEntryBci, false, true); |
| 1783 | 3313 } |
| 3314 } | |
| 3315 | |
| 3316 void LIRGenerator::increment_event_counter(CodeEmitInfo* info, int bci, bool backedge) { | |
| 3317 int freq_log; | |
| 3318 int level = compilation()->env()->comp_level(); | |
| 3319 if (level == CompLevel_limited_profile) { | |
| 3320 freq_log = (backedge ? Tier2BackedgeNotifyFreqLog : Tier2InvokeNotifyFreqLog); | |
| 3321 } else if (level == CompLevel_full_profile) { | |
| 3322 freq_log = (backedge ? Tier3BackedgeNotifyFreqLog : Tier3InvokeNotifyFreqLog); | |
| 3323 } else { | |
| 3324 ShouldNotReachHere(); | |
| 3325 } | |
| 3326 // Increment the appropriate invocation/backedge counter and notify the runtime. | |
| 3327 increment_event_counter_impl(info, info->scope()->method(), (1 << freq_log) - 1, bci, backedge, true); | |
| 0 | 3328 } |
| 3329 | |
| 1783 | 3330 void LIRGenerator::increment_event_counter_impl(CodeEmitInfo* info, |
| 3331 ciMethod *method, int frequency, | |
| 3332 int bci, bool backedge, bool notify) { | |
| 3333 assert(frequency == 0 || is_power_of_2(frequency + 1), "Frequency must be x^2 - 1 or 0"); | |
| 3334 int level = _compilation->env()->comp_level(); | |
| 3335 assert(level > CompLevel_simple, "Shouldn't be here"); | |
| 3336 | |
| 3337 int offset = -1; | |
|
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3338 LIR_Opr counter_holder; |
| 1783 | 3339 if (level == CompLevel_limited_profile) { |
|
12868
c775af091fe9
8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
twisti
parents:
12000
diff
changeset
|
3340 MethodCounters* counters_adr = method->ensure_method_counters(); |
|
c775af091fe9
8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
twisti
parents:
12000
diff
changeset
|
3341 if (counters_adr == NULL) { |
|
c775af091fe9
8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
twisti
parents:
12000
diff
changeset
|
3342 bailout("method counters allocation failed"); |
|
c775af091fe9
8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
twisti
parents:
12000
diff
changeset
|
3343 return; |
|
c775af091fe9
8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
twisti
parents:
12000
diff
changeset
|
3344 } |
|
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3345 counter_holder = new_pointer_register(); |
|
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3346 __ move(LIR_OprFact::intptrConst(counters_adr), counter_holder); |
|
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3347 offset = in_bytes(backedge ? MethodCounters::backedge_counter_offset() : |
|
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3348 MethodCounters::invocation_counter_offset()); |
| 1783 | 3349 } else if (level == CompLevel_full_profile) { |
|
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3350 counter_holder = new_register(T_METADATA); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3351 offset = in_bytes(backedge ? MethodData::backedge_counter_offset() : |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3352 MethodData::invocation_counter_offset()); |
|
2007
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
3353 ciMethodData* md = method->method_data_or_null(); |
|
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
3354 assert(md != NULL, "Sanity"); |
|
6739
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3355 __ metadata2reg(md->constant_encoding(), counter_holder); |
| 1783 | 3356 } else { |
| 3357 ShouldNotReachHere(); | |
| 3358 } | |
| 3359 LIR_Address* counter = new LIR_Address(counter_holder, offset, T_INT); | |
| 3360 LIR_Opr result = new_register(T_INT); | |
| 3361 __ load(counter, result); | |
| 3362 __ add(result, LIR_OprFact::intConst(InvocationCounter::count_increment), result); | |
| 3363 __ store(result, counter); | |
| 3364 if (notify) { | |
| 3365 LIR_Opr mask = load_immediate(frequency << InvocationCounter::count_shift, T_INT); | |
|
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3366 LIR_Opr meth = new_register(T_METADATA); |
|
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
8869
diff
changeset
|
3367 __ metadata2reg(method->constant_encoding(), meth); |
| 1783 | 3368 __ logical_and(result, mask, result); |
| 3369 __ cmp(lir_cond_equal, result, LIR_OprFact::intConst(0)); | |
| 3370 // The bci for info can point to cmp for if's we want the if bci | |
| 3371 CodeStub* overflow = new CounterOverflowStub(info, bci, meth); | |
| 3372 __ branch(lir_cond_equal, T_INT, overflow); | |
| 3373 __ branch_destination(overflow->continuation()); | |
| 3374 } | |
| 3375 } | |
| 0 | 3376 |
|
2166
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3377 void LIRGenerator::do_RuntimeCall(RuntimeCall* x) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3378 LIR_OprList* args = new LIR_OprList(x->number_of_arguments()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3379 BasicTypeList* signature = new BasicTypeList(x->number_of_arguments()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3380 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3381 if (x->pass_thread()) { |
|
12969
9acbfe04b5c3
8026495: JVM Crashes when started with -XX:+DTraceMethodProbes on Solaris x86_64
iveresov
parents:
12962
diff
changeset
|
3382 signature->append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
|
2166
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3383 args->append(getThreadPointer()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3384 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3385 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3386 for (int i = 0; i < x->number_of_arguments(); i++) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3387 Value a = x->argument_at(i); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3388 LIRItem* item = new LIRItem(a, this); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3389 item->load_item(); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3390 args->append(item->result()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3391 signature->append(as_BasicType(a->type())); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3392 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3393 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3394 LIR_Opr result = call_runtime(signature, args, x->entry(), x->type(), NULL); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3395 if (x->type() == voidType) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3396 set_no_result(x); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3397 } else { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3398 __ move(result, rlock_result(x)); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3399 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3400 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3401 |
|
9156
acadb114c818
8011648: C1: optimized build is broken after 7153771
roland
parents:
9062
diff
changeset
|
3402 #ifdef ASSERT |
| 8860 | 3403 void LIRGenerator::do_Assert(Assert *x) { |
| 3404 ValueTag tag = x->x()->type()->tag(); | |
| 3405 If::Condition cond = x->cond(); | |
| 3406 | |
| 3407 LIRItem xitem(x->x(), this); | |
| 3408 LIRItem yitem(x->y(), this); | |
| 3409 LIRItem* xin = &xitem; | |
| 3410 LIRItem* yin = &yitem; | |
| 3411 | |
| 3412 assert(tag == intTag, "Only integer assertions are valid!"); | |
| 3413 | |
| 3414 xin->load_item(); | |
| 3415 yin->dont_load_item(); | |
| 3416 | |
| 3417 set_no_result(x); | |
| 3418 | |
| 3419 LIR_Opr left = xin->result(); | |
| 3420 LIR_Opr right = yin->result(); | |
| 3421 | |
| 3422 __ lir_assert(lir_cond(x->cond()), left, right, x->message(), true); | |
|
9156
acadb114c818
8011648: C1: optimized build is broken after 7153771
roland
parents:
9062
diff
changeset
|
3423 } |
| 8860 | 3424 #endif |
| 3425 | |
| 3426 void LIRGenerator::do_RangeCheckPredicate(RangeCheckPredicate *x) { | |
| 3427 | |
| 3428 | |
| 3429 Instruction *a = x->x(); | |
| 3430 Instruction *b = x->y(); | |
| 3431 if (!a || StressRangeCheckElimination) { | |
| 3432 assert(!b || StressRangeCheckElimination, "B must also be null"); | |
| 3433 | |
| 3434 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3435 CodeStub* stub = new PredicateFailedStub(info); | |
| 3436 | |
| 3437 __ jump(stub); | |
| 3438 } else if (a->type()->as_IntConstant() && b->type()->as_IntConstant()) { | |
| 3439 int a_int = a->type()->as_IntConstant()->value(); | |
| 3440 int b_int = b->type()->as_IntConstant()->value(); | |
| 3441 | |
| 3442 bool ok = false; | |
| 3443 | |
| 3444 switch(x->cond()) { | |
| 3445 case Instruction::eql: ok = (a_int == b_int); break; | |
| 3446 case Instruction::neq: ok = (a_int != b_int); break; | |
| 3447 case Instruction::lss: ok = (a_int < b_int); break; | |
| 3448 case Instruction::leq: ok = (a_int <= b_int); break; | |
| 3449 case Instruction::gtr: ok = (a_int > b_int); break; | |
| 3450 case Instruction::geq: ok = (a_int >= b_int); break; | |
| 3451 case Instruction::aeq: ok = ((unsigned int)a_int >= (unsigned int)b_int); break; | |
| 3452 case Instruction::beq: ok = ((unsigned int)a_int <= (unsigned int)b_int); break; | |
| 3453 default: ShouldNotReachHere(); | |
| 3454 } | |
| 3455 | |
| 3456 if (ok) { | |
| 3457 | |
| 3458 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3459 CodeStub* stub = new PredicateFailedStub(info); | |
| 3460 | |
| 3461 __ jump(stub); | |
| 3462 } | |
| 3463 } else { | |
| 3464 | |
| 3465 ValueTag tag = x->x()->type()->tag(); | |
| 3466 If::Condition cond = x->cond(); | |
| 3467 LIRItem xitem(x->x(), this); | |
| 3468 LIRItem yitem(x->y(), this); | |
| 3469 LIRItem* xin = &xitem; | |
| 3470 LIRItem* yin = &yitem; | |
| 3471 | |
| 3472 assert(tag == intTag, "Only integer deoptimizations are valid!"); | |
| 3473 | |
| 3474 xin->load_item(); | |
| 3475 yin->dont_load_item(); | |
| 3476 set_no_result(x); | |
| 3477 | |
| 3478 LIR_Opr left = xin->result(); | |
| 3479 LIR_Opr right = yin->result(); | |
| 3480 | |
| 3481 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3482 CodeStub* stub = new PredicateFailedStub(info); | |
| 3483 | |
| 3484 __ cmp(lir_cond(cond), left, right); | |
| 3485 __ branch(lir_cond(cond), right->type(), stub); | |
| 3486 } | |
| 3487 } | |
| 3488 | |
| 3489 | |
| 0 | 3490 LIR_Opr LIRGenerator::call_runtime(Value arg1, address entry, ValueType* result_type, CodeEmitInfo* info) { |
| 3491 LIRItemList args(1); | |
| 3492 LIRItem value(arg1, this); | |
| 3493 args.append(&value); | |
| 3494 BasicTypeList signature; | |
| 3495 signature.append(as_BasicType(arg1->type())); | |
| 3496 | |
| 3497 return call_runtime(&signature, &args, entry, result_type, info); | |
| 3498 } | |
| 3499 | |
| 3500 | |
| 3501 LIR_Opr LIRGenerator::call_runtime(Value arg1, Value arg2, address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3502 LIRItemList args(2); | |
| 3503 LIRItem value1(arg1, this); | |
| 3504 LIRItem value2(arg2, this); | |
| 3505 args.append(&value1); | |
| 3506 args.append(&value2); | |
| 3507 BasicTypeList signature; | |
| 3508 signature.append(as_BasicType(arg1->type())); | |
| 3509 signature.append(as_BasicType(arg2->type())); | |
| 3510 | |
| 3511 return call_runtime(&signature, &args, entry, result_type, info); | |
| 3512 } | |
| 3513 | |
| 3514 | |
| 3515 LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIR_OprList* args, | |
| 3516 address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3517 // get a result register | |
| 3518 LIR_Opr phys_reg = LIR_OprFact::illegalOpr; | |
| 3519 LIR_Opr result = LIR_OprFact::illegalOpr; | |
| 3520 if (result_type->tag() != voidTag) { | |
| 3521 result = new_register(result_type); | |
| 3522 phys_reg = result_register_for(result_type); | |
| 3523 } | |
| 3524 | |
| 3525 // move the arguments into the correct location | |
| 3526 CallingConvention* cc = frame_map()->c_calling_convention(signature); | |
| 3527 assert(cc->length() == args->length(), "argument mismatch"); | |
| 3528 for (int i = 0; i < args->length(); i++) { | |
| 3529 LIR_Opr arg = args->at(i); | |
| 3530 LIR_Opr loc = cc->at(i); | |
| 3531 if (loc->is_register()) { | |
| 3532 __ move(arg, loc); | |
| 3533 } else { | |
| 3534 LIR_Address* addr = loc->as_address_ptr(); | |
| 3535 // if (!can_store_as_constant(arg)) { | |
| 3536 // LIR_Opr tmp = new_register(arg->type()); | |
| 3537 // __ move(arg, tmp); | |
| 3538 // arg = tmp; | |
| 3539 // } | |
| 3540 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 3541 __ unaligned_move(arg, addr); | |
| 3542 } else { | |
| 3543 __ move(arg, addr); | |
| 3544 } | |
| 3545 } | |
| 3546 } | |
| 3547 | |
| 3548 if (info) { | |
| 3549 __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); | |
| 3550 } else { | |
| 3551 __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); | |
| 3552 } | |
| 3553 if (result->is_valid()) { | |
| 3554 __ move(phys_reg, result); | |
| 3555 } | |
| 3556 return result; | |
| 3557 } | |
| 3558 | |
| 3559 | |
| 3560 LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIRItemList* args, | |
| 3561 address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3562 // get a result register | |
| 3563 LIR_Opr phys_reg = LIR_OprFact::illegalOpr; | |
| 3564 LIR_Opr result = LIR_OprFact::illegalOpr; | |
| 3565 if (result_type->tag() != voidTag) { | |
| 3566 result = new_register(result_type); | |
| 3567 phys_reg = result_register_for(result_type); | |
| 3568 } | |
| 3569 | |
| 3570 // move the arguments into the correct location | |
| 3571 CallingConvention* cc = frame_map()->c_calling_convention(signature); | |
| 3572 | |
| 3573 assert(cc->length() == args->length(), "argument mismatch"); | |
| 3574 for (int i = 0; i < args->length(); i++) { | |
| 3575 LIRItem* arg = args->at(i); | |
| 3576 LIR_Opr loc = cc->at(i); | |
| 3577 if (loc->is_register()) { | |
| 3578 arg->load_item_force(loc); | |
| 3579 } else { | |
| 3580 LIR_Address* addr = loc->as_address_ptr(); | |
| 3581 arg->load_for_store(addr->type()); | |
| 3582 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 3583 __ unaligned_move(arg->result(), addr); | |
| 3584 } else { | |
| 3585 __ move(arg->result(), addr); | |
| 3586 } | |
| 3587 } | |
| 3588 } | |
| 3589 | |
| 3590 if (info) { | |
| 3591 __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); | |
| 3592 } else { | |
| 3593 __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); | |
| 3594 } | |
| 3595 if (result->is_valid()) { | |
| 3596 __ move(phys_reg, result); | |
| 3597 } | |
| 3598 return result; | |
| 3599 } | |
|
4966
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3600 |
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3601 void LIRGenerator::do_MemBar(MemBar* x) { |
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3602 if (os::is_MP()) { |
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3603 LIR_Code code = x->code(); |
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3604 switch(code) { |
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3605 case lir_membar_acquire : __ membar_acquire(); break; |
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3606 case lir_membar_release : __ membar_release(); break; |
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3607 case lir_membar : __ membar(); break; |
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3608 case lir_membar_loadload : __ membar_loadload(); break; |
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3609 case lir_membar_storestore: __ membar_storestore(); break; |
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3610 case lir_membar_loadstore : __ membar_loadstore(); break; |
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3611 case lir_membar_storeload : __ membar_storeload(); break; |
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3612 default : ShouldNotReachHere(); break; |
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3613 } |
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3614 } |
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3615 } |