Mercurial > hg > truffle
annotate src/share/vm/c1/c1_LIRGenerator.cpp @ 8860:46f6f063b272
7153771: array bound check elimination for c1
Summary: when possible optimize out array bound checks, inserting predicates when needed.
Reviewed-by: never, kvn, twisti
Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>
| author | roland |
|---|---|
| date | Thu, 21 Mar 2013 09:27:54 +0100 |
| parents | db9981fd3124 |
| children | d595e8ddadd9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2005, 2012, 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 Value maxvalue(IfOp* ifop) { |
| 715 switch (ifop->cond()) { | |
| 716 case If::eql: return NULL; | |
| 717 case If::neq: return NULL; | |
| 718 case If::lss: // x < y ? x : y | |
| 719 case If::leq: // x <= y ? x : y | |
| 720 if (ifop->x() == ifop->tval() && | |
| 721 ifop->y() == ifop->fval()) return ifop->y(); | |
| 722 return NULL; | |
| 723 | |
| 724 case If::gtr: // x > y ? y : x | |
| 725 case If::geq: // x >= y ? y : x | |
| 726 if (ifop->x() == ifop->tval() && | |
| 727 ifop->y() == ifop->fval()) return ifop->y(); | |
| 728 return NULL; | |
| 729 | |
| 730 } | |
| 731 } | |
| 732 | |
| 733 static ciType* phi_declared_type(Phi* phi) { | |
| 734 ciType* t = phi->operand_at(0)->declared_type(); | |
| 735 if (t == NULL) { | |
| 736 return NULL; | |
| 737 } | |
| 738 for(int i = 1; i < phi->operand_count(); i++) { | |
| 739 if (t != phi->operand_at(i)->declared_type()) { | |
| 740 return NULL; | |
| 741 } | |
| 742 } | |
| 743 return t; | |
| 744 } | |
| 745 | |
| 0 | 746 void LIRGenerator::arraycopy_helper(Intrinsic* x, int* flagsp, ciArrayKlass** expected_typep) { |
| 747 Instruction* src = x->argument_at(0); | |
| 748 Instruction* src_pos = x->argument_at(1); | |
| 749 Instruction* dst = x->argument_at(2); | |
| 750 Instruction* dst_pos = x->argument_at(3); | |
| 751 Instruction* length = x->argument_at(4); | |
| 752 | |
| 753 // first try to identify the likely type of the arrays involved | |
| 754 ciArrayKlass* expected_type = NULL; | |
| 2446 | 755 bool is_exact = false, src_objarray = false, dst_objarray = false; |
| 0 | 756 { |
| 757 ciArrayKlass* src_exact_type = as_array_klass(src->exact_type()); | |
| 758 ciArrayKlass* src_declared_type = as_array_klass(src->declared_type()); | |
| 2446 | 759 Phi* phi; |
| 760 if (src_declared_type == NULL && (phi = src->as_Phi()) != NULL) { | |
| 761 src_declared_type = as_array_klass(phi_declared_type(phi)); | |
| 762 } | |
| 0 | 763 ciArrayKlass* dst_exact_type = as_array_klass(dst->exact_type()); |
| 764 ciArrayKlass* dst_declared_type = as_array_klass(dst->declared_type()); | |
| 2446 | 765 if (dst_declared_type == NULL && (phi = dst->as_Phi()) != NULL) { |
| 766 dst_declared_type = as_array_klass(phi_declared_type(phi)); | |
| 767 } | |
| 768 | |
| 0 | 769 if (src_exact_type != NULL && src_exact_type == dst_exact_type) { |
| 770 // the types exactly match so the type is fully known | |
| 771 is_exact = true; | |
| 772 expected_type = src_exact_type; | |
| 773 } else if (dst_exact_type != NULL && dst_exact_type->is_obj_array_klass()) { | |
| 774 ciArrayKlass* dst_type = (ciArrayKlass*) dst_exact_type; | |
| 775 ciArrayKlass* src_type = NULL; | |
| 776 if (src_exact_type != NULL && src_exact_type->is_obj_array_klass()) { | |
| 777 src_type = (ciArrayKlass*) src_exact_type; | |
| 778 } else if (src_declared_type != NULL && src_declared_type->is_obj_array_klass()) { | |
| 779 src_type = (ciArrayKlass*) src_declared_type; | |
| 780 } | |
| 781 if (src_type != NULL) { | |
| 782 if (src_type->element_type()->is_subtype_of(dst_type->element_type())) { | |
| 783 is_exact = true; | |
| 784 expected_type = dst_type; | |
| 785 } | |
| 786 } | |
| 787 } | |
| 788 // at least pass along a good guess | |
| 789 if (expected_type == NULL) expected_type = dst_exact_type; | |
| 790 if (expected_type == NULL) expected_type = src_declared_type; | |
| 791 if (expected_type == NULL) expected_type = dst_declared_type; | |
| 2446 | 792 |
| 793 src_objarray = (src_exact_type && src_exact_type->is_obj_array_klass()) || (src_declared_type && src_declared_type->is_obj_array_klass()); | |
| 794 dst_objarray = (dst_exact_type && dst_exact_type->is_obj_array_klass()) || (dst_declared_type && dst_declared_type->is_obj_array_klass()); | |
| 0 | 795 } |
| 796 | |
| 797 // if a probable array type has been identified, figure out if any | |
| 798 // of the required checks for a fast case can be elided. | |
| 799 int flags = LIR_OpArrayCopy::all_flags; | |
| 2446 | 800 |
| 801 if (!src_objarray) | |
| 802 flags &= ~LIR_OpArrayCopy::src_objarray; | |
| 803 if (!dst_objarray) | |
| 804 flags &= ~LIR_OpArrayCopy::dst_objarray; | |
| 805 | |
| 806 if (!x->arg_needs_null_check(0)) | |
| 807 flags &= ~LIR_OpArrayCopy::src_null_check; | |
| 808 if (!x->arg_needs_null_check(2)) | |
| 809 flags &= ~LIR_OpArrayCopy::dst_null_check; | |
| 810 | |
| 811 | |
| 0 | 812 if (expected_type != NULL) { |
| 2446 | 813 Value length_limit = NULL; |
| 814 | |
| 815 IfOp* ifop = length->as_IfOp(); | |
| 816 if (ifop != NULL) { | |
| 817 // look for expressions like min(v, a.length) which ends up as | |
| 818 // x > y ? y : x or x >= y ? y : x | |
| 819 if ((ifop->cond() == If::gtr || ifop->cond() == If::geq) && | |
| 820 ifop->x() == ifop->fval() && | |
| 821 ifop->y() == ifop->tval()) { | |
| 822 length_limit = ifop->y(); | |
| 823 } | |
| 824 } | |
| 825 | |
| 826 // try to skip null checks and range checks | |
| 827 NewArray* src_array = src->as_NewArray(); | |
| 828 if (src_array != NULL) { | |
| 0 | 829 flags &= ~LIR_OpArrayCopy::src_null_check; |
| 2446 | 830 if (length_limit != NULL && |
| 831 src_array->length() == length_limit && | |
| 832 is_constant_zero(src_pos)) { | |
| 833 flags &= ~LIR_OpArrayCopy::src_range_check; | |
| 834 } | |
| 835 } | |
| 836 | |
| 837 NewArray* dst_array = dst->as_NewArray(); | |
| 838 if (dst_array != NULL) { | |
| 0 | 839 flags &= ~LIR_OpArrayCopy::dst_null_check; |
| 2446 | 840 if (length_limit != NULL && |
| 841 dst_array->length() == length_limit && | |
| 842 is_constant_zero(dst_pos)) { | |
| 843 flags &= ~LIR_OpArrayCopy::dst_range_check; | |
| 844 } | |
| 845 } | |
| 0 | 846 |
| 847 // check from incoming constant values | |
| 848 if (positive_constant(src_pos)) | |
| 849 flags &= ~LIR_OpArrayCopy::src_pos_positive_check; | |
| 850 if (positive_constant(dst_pos)) | |
| 851 flags &= ~LIR_OpArrayCopy::dst_pos_positive_check; | |
| 852 if (positive_constant(length)) | |
| 853 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 854 | |
| 855 // see if the range check can be elided, which might also imply | |
| 856 // that src or dst is non-null. | |
| 857 ArrayLength* al = length->as_ArrayLength(); | |
| 858 if (al != NULL) { | |
| 859 if (al->array() == src) { | |
| 860 // it's the length of the source array | |
| 861 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 862 flags &= ~LIR_OpArrayCopy::src_null_check; | |
| 863 if (is_constant_zero(src_pos)) | |
| 864 flags &= ~LIR_OpArrayCopy::src_range_check; | |
| 865 } | |
| 866 if (al->array() == dst) { | |
| 867 // it's the length of the destination array | |
| 868 flags &= ~LIR_OpArrayCopy::length_positive_check; | |
| 869 flags &= ~LIR_OpArrayCopy::dst_null_check; | |
| 870 if (is_constant_zero(dst_pos)) | |
| 871 flags &= ~LIR_OpArrayCopy::dst_range_check; | |
| 872 } | |
| 873 } | |
| 874 if (is_exact) { | |
| 875 flags &= ~LIR_OpArrayCopy::type_check; | |
| 876 } | |
| 877 } | |
| 878 | |
| 2446 | 879 IntConstant* src_int = src_pos->type()->as_IntConstant(); |
| 880 IntConstant* dst_int = dst_pos->type()->as_IntConstant(); | |
| 881 if (src_int && dst_int) { | |
| 882 int s_offs = src_int->value(); | |
| 883 int d_offs = dst_int->value(); | |
| 884 if (src_int->value() >= dst_int->value()) { | |
| 885 flags &= ~LIR_OpArrayCopy::overlapping; | |
| 886 } | |
| 887 if (expected_type != NULL) { | |
| 888 BasicType t = expected_type->element_type()->basic_type(); | |
| 889 int element_size = type2aelembytes(t); | |
| 890 if (((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && | |
| 891 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0)) { | |
| 892 flags &= ~LIR_OpArrayCopy::unaligned; | |
| 893 } | |
| 894 } | |
| 895 } else if (src_pos == dst_pos || is_constant_zero(dst_pos)) { | |
| 896 // src and dest positions are the same, or dst is zero so assume | |
| 897 // nonoverlapping copy. | |
| 898 flags &= ~LIR_OpArrayCopy::overlapping; | |
| 899 } | |
| 900 | |
| 0 | 901 if (src == dst) { |
| 902 // moving within a single array so no type checks are needed | |
| 903 if (flags & LIR_OpArrayCopy::type_check) { | |
| 904 flags &= ~LIR_OpArrayCopy::type_check; | |
| 905 } | |
| 906 } | |
| 907 *flagsp = flags; | |
| 908 *expected_typep = (ciArrayKlass*)expected_type; | |
| 909 } | |
| 910 | |
| 911 | |
| 912 LIR_Opr LIRGenerator::round_item(LIR_Opr opr) { | |
| 913 assert(opr->is_register(), "why spill if item is not register?"); | |
| 914 | |
| 915 if (RoundFPResults && UseSSE < 1 && opr->is_single_fpu()) { | |
| 916 LIR_Opr result = new_register(T_FLOAT); | |
| 917 set_vreg_flag(result, must_start_in_memory); | |
| 918 assert(opr->is_register(), "only a register can be spilled"); | |
| 919 assert(opr->value_type()->is_float(), "rounding only for floats available"); | |
| 920 __ roundfp(opr, LIR_OprFact::illegalOpr, result); | |
| 921 return result; | |
| 922 } | |
| 923 return opr; | |
| 924 } | |
| 925 | |
| 926 | |
| 927 LIR_Opr LIRGenerator::force_to_spill(LIR_Opr value, BasicType t) { | |
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928 assert(type2size[t] == type2size[value->type()], |
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929 err_msg_res("size mismatch: t=%s, value->type()=%s", type2name(t), type2name(value->type()))); |
| 0 | 930 if (!value->is_register()) { |
| 931 // force into a register | |
| 932 LIR_Opr r = new_register(value->type()); | |
| 933 __ move(value, r); | |
| 934 value = r; | |
| 935 } | |
| 936 | |
| 937 // create a spill location | |
| 938 LIR_Opr tmp = new_register(t); | |
| 939 set_vreg_flag(tmp, LIRGenerator::must_start_in_memory); | |
| 940 | |
| 941 // move from register to spill | |
| 942 __ move(value, tmp); | |
| 943 return tmp; | |
| 944 } | |
| 945 | |
| 946 void LIRGenerator::profile_branch(If* if_instr, If::Condition cond) { | |
| 947 if (if_instr->should_profile()) { | |
| 948 ciMethod* method = if_instr->profiled_method(); | |
| 949 assert(method != NULL, "method should be set if branch is profiled"); | |
|
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950 ciMethodData* md = method->method_data_or_null(); |
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951 assert(md != NULL, "Sanity"); |
| 0 | 952 ciProfileData* data = md->bci_to_data(if_instr->profiled_bci()); |
| 953 assert(data != NULL, "must have profiling data"); | |
| 954 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 955 int taken_count_offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); | |
| 956 int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); | |
| 1783 | 957 if (if_instr->is_swapped()) { |
| 958 int t = taken_count_offset; | |
| 959 taken_count_offset = not_taken_count_offset; | |
| 960 not_taken_count_offset = t; | |
| 961 } | |
| 962 | |
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963 LIR_Opr md_reg = new_register(T_METADATA); |
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964 __ metadata2reg(md->constant_encoding(), md_reg); |
| 1783 | 965 |
| 966 LIR_Opr data_offset_reg = new_pointer_register(); | |
| 0 | 967 __ cmove(lir_cond(cond), |
| 1783 | 968 LIR_OprFact::intptrConst(taken_count_offset), |
| 969 LIR_OprFact::intptrConst(not_taken_count_offset), | |
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970 data_offset_reg, as_BasicType(if_instr->x()->type())); |
| 1783 | 971 |
| 972 // MDO cells are intptr_t, so the data_reg width is arch-dependent. | |
| 973 LIR_Opr data_reg = new_pointer_register(); | |
| 974 LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, data_reg->type()); | |
| 2002 | 975 __ move(data_addr, data_reg); |
| 1783 | 976 // Use leal instead of add to avoid destroying condition codes on x86 |
| 0 | 977 LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT); |
| 978 __ leal(LIR_OprFact::address(fake_incr_value), data_reg); | |
| 2002 | 979 __ move(data_reg, data_addr); |
| 0 | 980 } |
| 981 } | |
| 982 | |
| 983 // Phi technique: | |
| 984 // This is about passing live values from one basic block to the other. | |
| 985 // In code generated with Java it is rather rare that more than one | |
| 986 // value is on the stack from one basic block to the other. | |
| 987 // We optimize our technique for efficient passing of one value | |
| 988 // (of type long, int, double..) but it can be extended. | |
| 989 // When entering or leaving a basic block, all registers and all spill | |
| 990 // slots are release and empty. We use the released registers | |
| 991 // and spill slots to pass the live values from one block | |
| 992 // to the other. The topmost value, i.e., the value on TOS of expression | |
| 993 // stack is passed in registers. All other values are stored in spilling | |
| 994 // area. Every Phi has an index which designates its spill slot | |
| 995 // At exit of a basic block, we fill the register(s) and spill slots. | |
| 996 // At entry of a basic block, the block_prolog sets up the content of phi nodes | |
| 997 // and locks necessary registers and spilling slots. | |
| 998 | |
| 999 | |
| 1000 // move current value to referenced phi function | |
| 1001 void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_val) { | |
| 1002 Phi* phi = sux_val->as_Phi(); | |
| 1003 // cur_val can be null without phi being null in conjunction with inlining | |
| 1004 if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) { | |
| 1005 LIR_Opr operand = cur_val->operand(); | |
| 1006 if (cur_val->operand()->is_illegal()) { | |
| 1007 assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL, | |
| 1008 "these can be produced lazily"); | |
| 1009 operand = operand_for_instruction(cur_val); | |
| 1010 } | |
| 1011 resolver->move(operand, operand_for_instruction(phi)); | |
| 1012 } | |
| 1013 } | |
| 1014 | |
| 1015 | |
| 1016 // Moves all stack values into their PHI position | |
| 1017 void LIRGenerator::move_to_phi(ValueStack* cur_state) { | |
| 1018 BlockBegin* bb = block(); | |
| 1019 if (bb->number_of_sux() == 1) { | |
| 1020 BlockBegin* sux = bb->sux_at(0); | |
| 1021 assert(sux->number_of_preds() > 0, "invalid CFG"); | |
| 1022 | |
| 1023 // a block with only one predecessor never has phi functions | |
| 1024 if (sux->number_of_preds() > 1) { | |
| 1025 int max_phis = cur_state->stack_size() + cur_state->locals_size(); | |
| 1026 PhiResolver resolver(this, _virtual_register_number + max_phis * 2); | |
| 1027 | |
| 1028 ValueStack* sux_state = sux->state(); | |
| 1029 Value sux_value; | |
| 1030 int index; | |
| 1031 | |
| 1819 | 1032 assert(cur_state->scope() == sux_state->scope(), "not matching"); |
| 1033 assert(cur_state->locals_size() == sux_state->locals_size(), "not matching"); | |
| 1034 assert(cur_state->stack_size() == sux_state->stack_size(), "not matching"); | |
| 1035 | |
| 0 | 1036 for_each_stack_value(sux_state, index, sux_value) { |
| 1037 move_to_phi(&resolver, cur_state->stack_at(index), sux_value); | |
| 1038 } | |
| 1039 | |
| 1040 for_each_local_value(sux_state, index, sux_value) { | |
| 1041 move_to_phi(&resolver, cur_state->local_at(index), sux_value); | |
| 1042 } | |
| 1043 | |
| 1044 assert(cur_state->caller_state() == sux_state->caller_state(), "caller states must be equal"); | |
| 1045 } | |
| 1046 } | |
| 1047 } | |
| 1048 | |
| 1049 | |
| 1050 LIR_Opr LIRGenerator::new_register(BasicType type) { | |
| 1051 int vreg = _virtual_register_number; | |
| 1052 // add a little fudge factor for the bailout, since the bailout is | |
| 1053 // only checked periodically. This gives a few extra registers to | |
| 1054 // hand out before we really run out, which helps us keep from | |
| 1055 // tripping over assertions. | |
| 1056 if (vreg + 20 >= LIR_OprDesc::vreg_max) { | |
| 1057 bailout("out of virtual registers"); | |
| 1058 if (vreg + 2 >= LIR_OprDesc::vreg_max) { | |
| 1059 // wrap it around | |
| 1060 _virtual_register_number = LIR_OprDesc::vreg_base; | |
| 1061 } | |
| 1062 } | |
| 1063 _virtual_register_number += 1; | |
| 1064 return LIR_OprFact::virtual_register(vreg, type); | |
| 1065 } | |
| 1066 | |
| 1067 | |
| 1068 // Try to lock using register in hint | |
| 1069 LIR_Opr LIRGenerator::rlock(Value instr) { | |
| 1070 return new_register(instr->type()); | |
| 1071 } | |
| 1072 | |
| 1073 | |
| 1074 // does an rlock and sets result | |
| 1075 LIR_Opr LIRGenerator::rlock_result(Value x) { | |
| 1076 LIR_Opr reg = rlock(x); | |
| 1077 set_result(x, reg); | |
| 1078 return reg; | |
| 1079 } | |
| 1080 | |
| 1081 | |
| 1082 // does an rlock and sets result | |
| 1083 LIR_Opr LIRGenerator::rlock_result(Value x, BasicType type) { | |
| 1084 LIR_Opr reg; | |
| 1085 switch (type) { | |
| 1086 case T_BYTE: | |
| 1087 case T_BOOLEAN: | |
| 1088 reg = rlock_byte(type); | |
| 1089 break; | |
| 1090 default: | |
| 1091 reg = rlock(x); | |
| 1092 break; | |
| 1093 } | |
| 1094 | |
| 1095 set_result(x, reg); | |
| 1096 return reg; | |
| 1097 } | |
| 1098 | |
| 1099 | |
| 1100 //--------------------------------------------------------------------- | |
| 1101 ciObject* LIRGenerator::get_jobject_constant(Value value) { | |
| 1102 ObjectType* oc = value->type()->as_ObjectType(); | |
| 1103 if (oc) { | |
| 1104 return oc->constant_value(); | |
| 1105 } | |
| 1106 return NULL; | |
| 1107 } | |
| 1108 | |
| 1109 | |
| 1110 void LIRGenerator::do_ExceptionObject(ExceptionObject* x) { | |
| 1111 assert(block()->is_set(BlockBegin::exception_entry_flag), "ExceptionObject only allowed in exception handler block"); | |
| 1112 assert(block()->next() == x, "ExceptionObject must be first instruction of block"); | |
| 1113 | |
| 1114 // no moves are created for phi functions at the begin of exception | |
| 1115 // handlers, so assign operands manually here | |
| 1116 for_each_phi_fun(block(), phi, | |
| 1117 operand_for_instruction(phi)); | |
| 1118 | |
| 1119 LIR_Opr thread_reg = getThreadPointer(); | |
| 2002 | 1120 __ move_wide(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT), |
| 1121 exceptionOopOpr()); | |
| 1122 __ move_wide(LIR_OprFact::oopConst(NULL), | |
| 1123 new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT)); | |
| 1124 __ move_wide(LIR_OprFact::oopConst(NULL), | |
| 1125 new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT)); | |
| 0 | 1126 |
| 1127 LIR_Opr result = new_register(T_OBJECT); | |
| 1128 __ move(exceptionOopOpr(), result); | |
| 1129 set_result(x, result); | |
| 1130 } | |
| 1131 | |
| 1132 | |
| 1133 //---------------------------------------------------------------------- | |
| 1134 //---------------------------------------------------------------------- | |
| 1135 //---------------------------------------------------------------------- | |
| 1136 //---------------------------------------------------------------------- | |
| 1137 // visitor functions | |
| 1138 //---------------------------------------------------------------------- | |
| 1139 //---------------------------------------------------------------------- | |
| 1140 //---------------------------------------------------------------------- | |
| 1141 //---------------------------------------------------------------------- | |
| 1142 | |
| 1143 void LIRGenerator::do_Phi(Phi* x) { | |
| 1144 // phi functions are never visited directly | |
| 1145 ShouldNotReachHere(); | |
| 1146 } | |
| 1147 | |
| 1148 | |
| 1149 // Code for a constant is generated lazily unless the constant is frequently used and can't be inlined. | |
| 1150 void LIRGenerator::do_Constant(Constant* x) { | |
| 1819 | 1151 if (x->state_before() != NULL) { |
| 0 | 1152 // Any constant with a ValueStack requires patching so emit the patch here |
| 1153 LIR_Opr reg = rlock_result(x); | |
| 1819 | 1154 CodeEmitInfo* info = state_for(x, x->state_before()); |
| 0 | 1155 __ oop2reg_patch(NULL, reg, info); |
| 1156 } else if (x->use_count() > 1 && !can_inline_as_constant(x)) { | |
| 1157 if (!x->is_pinned()) { | |
| 1158 // unpinned constants are handled specially so that they can be | |
| 1159 // put into registers when they are used multiple times within a | |
| 1160 // block. After the block completes their operand will be | |
| 1161 // cleared so that other blocks can't refer to that register. | |
| 1162 set_result(x, load_constant(x)); | |
| 1163 } else { | |
| 1164 LIR_Opr res = x->operand(); | |
| 1165 if (!res->is_valid()) { | |
| 1166 res = LIR_OprFact::value_type(x->type()); | |
| 1167 } | |
| 1168 if (res->is_constant()) { | |
| 1169 LIR_Opr reg = rlock_result(x); | |
| 1170 __ move(res, reg); | |
| 1171 } else { | |
| 1172 set_result(x, res); | |
| 1173 } | |
| 1174 } | |
| 1175 } else { | |
| 1176 set_result(x, LIR_OprFact::value_type(x->type())); | |
| 1177 } | |
| 1178 } | |
| 1179 | |
| 1180 | |
| 1181 void LIRGenerator::do_Local(Local* x) { | |
| 1182 // operand_for_instruction has the side effect of setting the result | |
| 1183 // so there's no need to do it here. | |
| 1184 operand_for_instruction(x); | |
| 1185 } | |
| 1186 | |
| 1187 | |
| 1188 void LIRGenerator::do_IfInstanceOf(IfInstanceOf* x) { | |
| 1189 Unimplemented(); | |
| 1190 } | |
| 1191 | |
| 1192 | |
| 1193 void LIRGenerator::do_Return(Return* x) { | |
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1194 if (compilation()->env()->dtrace_method_probes()) { |
| 0 | 1195 BasicTypeList signature; |
| 2002 | 1196 signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
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1197 signature.append(T_OBJECT); // Method* |
| 0 | 1198 LIR_OprList* args = new LIR_OprList(); |
| 1199 args->append(getThreadPointer()); | |
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1200 LIR_Opr meth = new_register(T_METADATA); |
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1201 __ metadata2reg(method()->constant_encoding(), meth); |
| 0 | 1202 args->append(meth); |
| 1203 call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL); | |
| 1204 } | |
| 1205 | |
| 1206 if (x->type()->is_void()) { | |
| 1207 __ return_op(LIR_OprFact::illegalOpr); | |
| 1208 } else { | |
| 1209 LIR_Opr reg = result_register_for(x->type(), /*callee=*/true); | |
| 1210 LIRItem result(x->result(), this); | |
| 1211 | |
| 1212 result.load_item_force(reg); | |
| 1213 __ return_op(result.result()); | |
| 1214 } | |
| 1215 set_no_result(x); | |
| 1216 } | |
| 1217 | |
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1218 // Examble: ref.get() |
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1219 // Combination of LoadField and g1 pre-write barrier |
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1220 void LIRGenerator::do_Reference_get(Intrinsic* x) { |
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1221 |
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1222 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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1223 guarantee(referent_offset > 0, "referent offset not initialized"); |
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1224 |
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1225 assert(x->number_of_arguments() == 1, "wrong type"); |
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1226 |
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1227 LIRItem reference(x->argument_at(0), this); |
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1228 reference.load_item(); |
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1229 |
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1230 // need to perform the null check on the reference objecy |
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1231 CodeEmitInfo* info = NULL; |
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1232 if (x->needs_null_check()) { |
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1233 info = state_for(x); |
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1234 } |
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1235 |
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1236 LIR_Address* referent_field_adr = |
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1237 new LIR_Address(reference.result(), referent_offset, T_OBJECT); |
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1238 |
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1239 LIR_Opr result = rlock_result(x); |
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1240 |
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1241 __ load(referent_field_adr, result, info); |
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1242 |
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1243 // Register the value in the referent field with the pre-barrier |
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1244 pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */, |
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1245 result /* pre_val */, |
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1246 false /* do_load */, |
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1247 false /* patch */, |
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1248 NULL /* info */); |
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1249 } |
| 0 | 1250 |
| 6135 | 1251 // Example: clazz.isInstance(object) |
| 1252 void LIRGenerator::do_isInstance(Intrinsic* x) { | |
| 1253 assert(x->number_of_arguments() == 2, "wrong type"); | |
| 1254 | |
| 1255 // TODO could try to substitute this node with an equivalent InstanceOf | |
| 1256 // if clazz is known to be a constant Class. This will pick up newly found | |
| 1257 // constants after HIR construction. I'll leave this to a future change. | |
| 1258 | |
| 1259 // as a first cut, make a simple leaf call to runtime to stay platform independent. | |
| 1260 // could follow the aastore example in a future change. | |
| 1261 | |
| 1262 LIRItem clazz(x->argument_at(0), this); | |
| 1263 LIRItem object(x->argument_at(1), this); | |
| 1264 clazz.load_item(); | |
| 1265 object.load_item(); | |
| 1266 LIR_Opr result = rlock_result(x); | |
| 1267 | |
| 1268 // need to perform null check on clazz | |
| 1269 if (x->needs_null_check()) { | |
| 1270 CodeEmitInfo* info = state_for(x); | |
| 1271 __ null_check(clazz.result(), info); | |
| 1272 } | |
| 1273 | |
| 1274 LIR_Opr call_result = call_runtime(clazz.value(), object.value(), | |
| 1275 CAST_FROM_FN_PTR(address, Runtime1::is_instance_of), | |
| 1276 x->type(), | |
| 1277 NULL); // NULL CodeEmitInfo results in a leaf call | |
| 1278 __ move(call_result, result); | |
| 1279 } | |
| 1280 | |
| 0 | 1281 // Example: object.getClass () |
| 1282 void LIRGenerator::do_getClass(Intrinsic* x) { | |
| 1283 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 1284 | |
| 1285 LIRItem rcvr(x->argument_at(0), this); | |
| 1286 rcvr.load_item(); | |
| 1287 LIR_Opr result = rlock_result(x); | |
| 1288 | |
| 1289 // need to perform the null check on the rcvr | |
| 1290 CodeEmitInfo* info = NULL; | |
| 1291 if (x->needs_null_check()) { | |
| 1819 | 1292 info = state_for(x); |
| 0 | 1293 } |
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1294 __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), result, info); |
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1295 __ move_wide(new LIR_Address(result, in_bytes(Klass::java_mirror_offset()), T_OBJECT), result); |
| 0 | 1296 } |
| 1297 | |
| 1298 | |
| 1299 // Example: Thread.currentThread() | |
| 1300 void LIRGenerator::do_currentThread(Intrinsic* x) { | |
| 1301 assert(x->number_of_arguments() == 0, "wrong type"); | |
| 1302 LIR_Opr reg = rlock_result(x); | |
| 2002 | 1303 __ move_wide(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg); |
| 0 | 1304 } |
| 1305 | |
| 1306 | |
| 1307 void LIRGenerator::do_RegisterFinalizer(Intrinsic* x) { | |
| 1308 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 1309 LIRItem receiver(x->argument_at(0), this); | |
| 1310 | |
| 1311 receiver.load_item(); | |
| 1312 BasicTypeList signature; | |
| 1313 signature.append(T_OBJECT); // receiver | |
| 1314 LIR_OprList* args = new LIR_OprList(); | |
| 1315 args->append(receiver.result()); | |
| 1316 CodeEmitInfo* info = state_for(x, x->state()); | |
| 1317 call_runtime(&signature, args, | |
| 1318 CAST_FROM_FN_PTR(address, Runtime1::entry_for(Runtime1::register_finalizer_id)), | |
| 1319 voidType, info); | |
| 1320 | |
| 1321 set_no_result(x); | |
| 1322 } | |
| 1323 | |
| 1324 | |
| 1325 //------------------------local access-------------------------------------- | |
| 1326 | |
| 1327 LIR_Opr LIRGenerator::operand_for_instruction(Instruction* x) { | |
| 1328 if (x->operand()->is_illegal()) { | |
| 1329 Constant* c = x->as_Constant(); | |
| 1330 if (c != NULL) { | |
| 1331 x->set_operand(LIR_OprFact::value_type(c->type())); | |
| 1332 } else { | |
| 1333 assert(x->as_Phi() || x->as_Local() != NULL, "only for Phi and Local"); | |
| 1334 // allocate a virtual register for this local or phi | |
| 1335 x->set_operand(rlock(x)); | |
| 1336 _instruction_for_operand.at_put_grow(x->operand()->vreg_number(), x, NULL); | |
| 1337 } | |
| 1338 } | |
| 1339 return x->operand(); | |
| 1340 } | |
| 1341 | |
| 1342 | |
| 1343 Instruction* LIRGenerator::instruction_for_opr(LIR_Opr opr) { | |
| 1344 if (opr->is_virtual()) { | |
| 1345 return instruction_for_vreg(opr->vreg_number()); | |
| 1346 } | |
| 1347 return NULL; | |
| 1348 } | |
| 1349 | |
| 1350 | |
| 1351 Instruction* LIRGenerator::instruction_for_vreg(int reg_num) { | |
| 1352 if (reg_num < _instruction_for_operand.length()) { | |
| 1353 return _instruction_for_operand.at(reg_num); | |
| 1354 } | |
| 1355 return NULL; | |
| 1356 } | |
| 1357 | |
| 1358 | |
| 1359 void LIRGenerator::set_vreg_flag(int vreg_num, VregFlag f) { | |
| 1360 if (_vreg_flags.size_in_bits() == 0) { | |
| 1361 BitMap2D temp(100, num_vreg_flags); | |
| 1362 temp.clear(); | |
| 1363 _vreg_flags = temp; | |
| 1364 } | |
| 1365 _vreg_flags.at_put_grow(vreg_num, f, true); | |
| 1366 } | |
| 1367 | |
| 1368 bool LIRGenerator::is_vreg_flag_set(int vreg_num, VregFlag f) { | |
| 1369 if (!_vreg_flags.is_valid_index(vreg_num, f)) { | |
| 1370 return false; | |
| 1371 } | |
| 1372 return _vreg_flags.at(vreg_num, f); | |
| 1373 } | |
| 1374 | |
| 1375 | |
| 1376 // Block local constant handling. This code is useful for keeping | |
| 1377 // unpinned constants and constants which aren't exposed in the IR in | |
| 1378 // registers. Unpinned Constant instructions have their operands | |
| 1379 // cleared when the block is finished so that other blocks can't end | |
| 1380 // up referring to their registers. | |
| 1381 | |
| 1382 LIR_Opr LIRGenerator::load_constant(Constant* x) { | |
| 1383 assert(!x->is_pinned(), "only for unpinned constants"); | |
| 1384 _unpinned_constants.append(x); | |
| 1385 return load_constant(LIR_OprFact::value_type(x->type())->as_constant_ptr()); | |
| 1386 } | |
| 1387 | |
| 1388 | |
| 1389 LIR_Opr LIRGenerator::load_constant(LIR_Const* c) { | |
| 1390 BasicType t = c->type(); | |
| 1391 for (int i = 0; i < _constants.length(); i++) { | |
| 1392 LIR_Const* other = _constants.at(i); | |
| 1393 if (t == other->type()) { | |
| 1394 switch (t) { | |
| 1395 case T_INT: | |
| 1396 case T_FLOAT: | |
| 1397 if (c->as_jint_bits() != other->as_jint_bits()) continue; | |
| 1398 break; | |
| 1399 case T_LONG: | |
| 1400 case T_DOUBLE: | |
|
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1401 if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue; |
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1402 if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue; |
| 0 | 1403 break; |
| 1404 case T_OBJECT: | |
| 1405 if (c->as_jobject() != other->as_jobject()) continue; | |
| 1406 break; | |
| 1407 } | |
| 1408 return _reg_for_constants.at(i); | |
| 1409 } | |
| 1410 } | |
| 1411 | |
| 1412 LIR_Opr result = new_register(t); | |
| 1413 __ move((LIR_Opr)c, result); | |
| 1414 _constants.append(c); | |
| 1415 _reg_for_constants.append(result); | |
| 1416 return result; | |
| 1417 } | |
| 1418 | |
| 1419 // Various barriers | |
| 1420 | |
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1421 void LIRGenerator::pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
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1422 bool do_load, bool patch, CodeEmitInfo* info) { |
| 342 | 1423 // Do the pre-write barrier, if any. |
| 1424 switch (_bs->kind()) { | |
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1425 #if INCLUDE_ALL_GCS |
| 342 | 1426 case BarrierSet::G1SATBCT: |
| 1427 case BarrierSet::G1SATBCTLogging: | |
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1428 G1SATBCardTableModRef_pre_barrier(addr_opr, pre_val, do_load, patch, info); |
| 342 | 1429 break; |
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1430 #endif // INCLUDE_ALL_GCS |
| 342 | 1431 case BarrierSet::CardTableModRef: |
| 1432 case BarrierSet::CardTableExtension: | |
| 1433 // No pre barriers | |
| 1434 break; | |
| 1435 case BarrierSet::ModRef: | |
| 1436 case BarrierSet::Other: | |
| 1437 // No pre barriers | |
| 1438 break; | |
| 1439 default : | |
| 1440 ShouldNotReachHere(); | |
| 1441 | |
| 1442 } | |
| 1443 } | |
| 1444 | |
| 0 | 1445 void LIRGenerator::post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
| 342 | 1446 switch (_bs->kind()) { |
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1447 #if INCLUDE_ALL_GCS |
| 342 | 1448 case BarrierSet::G1SATBCT: |
| 1449 case BarrierSet::G1SATBCTLogging: | |
| 1450 G1SATBCardTableModRef_post_barrier(addr, new_val); | |
| 1451 break; | |
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1452 #endif // INCLUDE_ALL_GCS |
| 0 | 1453 case BarrierSet::CardTableModRef: |
| 1454 case BarrierSet::CardTableExtension: | |
| 1455 CardTableModRef_post_barrier(addr, new_val); | |
| 1456 break; | |
| 1457 case BarrierSet::ModRef: | |
| 1458 case BarrierSet::Other: | |
| 1459 // No post barriers | |
| 1460 break; | |
| 1461 default : | |
| 1462 ShouldNotReachHere(); | |
| 1463 } | |
| 1464 } | |
| 1465 | |
| 342 | 1466 //////////////////////////////////////////////////////////////////////// |
|
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1467 #if INCLUDE_ALL_GCS |
| 342 | 1468 |
|
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1469 void LIRGenerator::G1SATBCardTableModRef_pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
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1470 bool do_load, bool patch, CodeEmitInfo* info) { |
| 342 | 1471 // First we test whether marking is in progress. |
| 1472 BasicType flag_type; | |
| 1473 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { | |
| 1474 flag_type = T_INT; | |
| 1475 } else { | |
| 1476 guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, | |
| 1477 "Assumption"); | |
| 1478 flag_type = T_BYTE; | |
| 1479 } | |
| 1480 LIR_Opr thrd = getThreadPointer(); | |
| 1481 LIR_Address* mark_active_flag_addr = | |
| 1482 new LIR_Address(thrd, | |
| 1483 in_bytes(JavaThread::satb_mark_queue_offset() + | |
| 1484 PtrQueue::byte_offset_of_active()), | |
| 1485 flag_type); | |
| 1486 // Read the marking-in-progress flag. | |
| 1487 LIR_Opr flag_val = new_register(T_INT); | |
| 1488 __ load(mark_active_flag_addr, flag_val); | |
| 1489 __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0)); | |
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1490 |
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1491 LIR_PatchCode pre_val_patch_code = lir_patch_none; |
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1492 |
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1493 CodeStub* slow; |
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1494 |
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1495 if (do_load) { |
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1496 assert(pre_val == LIR_OprFact::illegalOpr, "sanity"); |
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1497 assert(addr_opr != LIR_OprFact::illegalOpr, "sanity"); |
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1498 |
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1499 if (patch) |
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1500 pre_val_patch_code = lir_patch_normal; |
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1501 |
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1502 pre_val = new_register(T_OBJECT); |
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1503 |
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1504 if (!addr_opr->is_address()) { |
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1505 assert(addr_opr->is_register(), "must be"); |
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1506 addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, T_OBJECT)); |
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1507 } |
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1508 slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code, info); |
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1509 } else { |
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1510 assert(addr_opr == LIR_OprFact::illegalOpr, "sanity"); |
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1511 assert(pre_val->is_register(), "must be"); |
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1512 assert(pre_val->type() == T_OBJECT, "must be an object"); |
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1513 assert(info == NULL, "sanity"); |
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1514 |
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1515 slow = new G1PreBarrierStub(pre_val); |
| 342 | 1516 } |
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1517 |
| 342 | 1518 __ branch(lir_cond_notEqual, T_INT, slow); |
| 1519 __ branch_destination(slow->continuation()); | |
| 1520 } | |
| 1521 | |
| 1522 void LIRGenerator::G1SATBCardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { | |
| 1523 // If the "new_val" is a constant NULL, no barrier is necessary. | |
| 1524 if (new_val->is_constant() && | |
| 1525 new_val->as_constant_ptr()->as_jobject() == NULL) return; | |
| 1526 | |
| 1527 if (!new_val->is_register()) { | |
| 1572 | 1528 LIR_Opr new_val_reg = new_register(T_OBJECT); |
| 342 | 1529 if (new_val->is_constant()) { |
| 1530 __ move(new_val, new_val_reg); | |
| 1531 } else { | |
| 1532 __ leal(new_val, new_val_reg); | |
| 1533 } | |
| 1534 new_val = new_val_reg; | |
| 1535 } | |
| 1536 assert(new_val->is_register(), "must be a register at this point"); | |
| 1537 | |
| 1538 if (addr->is_address()) { | |
| 1539 LIR_Address* address = addr->as_address_ptr(); | |
|
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1540 LIR_Opr ptr = new_pointer_register(); |
| 342 | 1541 if (!address->index()->is_valid() && address->disp() == 0) { |
| 1542 __ move(address->base(), ptr); | |
| 1543 } else { | |
| 1544 assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); | |
| 1545 __ leal(addr, ptr); | |
| 1546 } | |
| 1547 addr = ptr; | |
| 1548 } | |
| 1549 assert(addr->is_register(), "must be a register at this point"); | |
| 1550 | |
| 1551 LIR_Opr xor_res = new_pointer_register(); | |
| 1552 LIR_Opr xor_shift_res = new_pointer_register(); | |
| 1553 if (TwoOperandLIRForm ) { | |
| 1554 __ move(addr, xor_res); | |
| 1555 __ logical_xor(xor_res, new_val, xor_res); | |
| 1556 __ move(xor_res, xor_shift_res); | |
| 1557 __ unsigned_shift_right(xor_shift_res, | |
| 1558 LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), | |
| 1559 xor_shift_res, | |
| 1560 LIR_OprDesc::illegalOpr()); | |
| 1561 } else { | |
| 1562 __ logical_xor(addr, new_val, xor_res); | |
| 1563 __ unsigned_shift_right(xor_res, | |
| 1564 LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), | |
| 1565 xor_shift_res, | |
| 1566 LIR_OprDesc::illegalOpr()); | |
| 1567 } | |
| 1568 | |
| 1569 if (!new_val->is_register()) { | |
| 1572 | 1570 LIR_Opr new_val_reg = new_register(T_OBJECT); |
| 342 | 1571 __ leal(new_val, new_val_reg); |
| 1572 new_val = new_val_reg; | |
| 1573 } | |
| 1574 assert(new_val->is_register(), "must be a register at this point"); | |
| 1575 | |
| 1576 __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD)); | |
| 1577 | |
| 1578 CodeStub* slow = new G1PostBarrierStub(addr, new_val); | |
| 1572 | 1579 __ branch(lir_cond_notEqual, LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow); |
| 342 | 1580 __ branch_destination(slow->continuation()); |
| 1581 } | |
| 1582 | |
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1583 #endif // INCLUDE_ALL_GCS |
| 342 | 1584 //////////////////////////////////////////////////////////////////////// |
| 1585 | |
| 0 | 1586 void LIRGenerator::CardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
| 1587 | |
| 342 | 1588 assert(sizeof(*((CardTableModRefBS*)_bs)->byte_map_base) == sizeof(jbyte), "adjust this code"); |
| 1589 LIR_Const* card_table_base = new LIR_Const(((CardTableModRefBS*)_bs)->byte_map_base); | |
| 0 | 1590 if (addr->is_address()) { |
| 1591 LIR_Address* address = addr->as_address_ptr(); | |
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1592 // ptr cannot be an object because we use this barrier for array card marks |
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1593 // and addr can point in the middle of an array. |
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1594 LIR_Opr ptr = new_pointer_register(); |
| 0 | 1595 if (!address->index()->is_valid() && address->disp() == 0) { |
| 1596 __ move(address->base(), ptr); | |
| 1597 } else { | |
| 1598 assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); | |
| 1599 __ leal(addr, ptr); | |
| 1600 } | |
| 1601 addr = ptr; | |
| 1602 } | |
| 1603 assert(addr->is_register(), "must be a register at this point"); | |
| 1604 | |
|
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1605 #ifdef ARM |
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1606 // TODO: ARM - move to platform-dependent code |
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1607 LIR_Opr tmp = FrameMap::R14_opr; |
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1608 if (VM_Version::supports_movw()) { |
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1609 __ move((LIR_Opr)card_table_base, tmp); |
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1610 } else { |
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1611 __ move(new LIR_Address(FrameMap::Rthread_opr, in_bytes(JavaThread::card_table_base_offset()), T_ADDRESS), tmp); |
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1612 } |
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1613 |
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1614 CardTableModRefBS* ct = (CardTableModRefBS*)_bs; |
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1615 LIR_Address *card_addr = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTableModRefBS::card_shift, 0, T_BYTE); |
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1616 if(((int)ct->byte_map_base & 0xff) == 0) { |
|
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1617 __ move(tmp, card_addr); |
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1618 } else { |
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1619 LIR_Opr tmp_zero = new_register(T_INT); |
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1620 __ move(LIR_OprFact::intConst(0), tmp_zero); |
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1621 __ move(tmp_zero, card_addr); |
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1622 } |
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1623 #else // ARM |
| 0 | 1624 LIR_Opr tmp = new_pointer_register(); |
| 1625 if (TwoOperandLIRForm) { | |
| 1626 __ move(addr, tmp); | |
| 1627 __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp); | |
| 1628 } else { | |
| 1629 __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp); | |
| 1630 } | |
| 1631 if (can_inline_as_constant(card_table_base)) { | |
| 1632 __ move(LIR_OprFact::intConst(0), | |
| 1633 new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE)); | |
| 1634 } else { | |
| 1635 __ move(LIR_OprFact::intConst(0), | |
| 1636 new LIR_Address(tmp, load_constant(card_table_base), | |
| 1637 T_BYTE)); | |
| 1638 } | |
|
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1639 #endif // ARM |
| 0 | 1640 } |
| 1641 | |
| 1642 | |
| 1643 //------------------------field access-------------------------------------- | |
| 1644 | |
| 1645 // Comment copied form templateTable_i486.cpp | |
| 1646 // ---------------------------------------------------------------------------- | |
| 1647 // Volatile variables demand their effects be made known to all CPU's in | |
| 1648 // order. Store buffers on most chips allow reads & writes to reorder; the | |
| 1649 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
| 1650 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
| 1651 // reorder volatile references, the hardware also must not reorder them). | |
| 1652 // | |
| 1653 // According to the new Java Memory Model (JMM): | |
| 1654 // (1) All volatiles are serialized wrt to each other. | |
| 1655 // ALSO reads & writes act as aquire & release, so: | |
| 1656 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
| 1657 // the read float up to before the read. It's OK for non-volatile memory refs | |
| 1658 // that happen before the volatile read to float down below it. | |
| 1659 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
| 1660 // that happen BEFORE the write float down to after the write. It's OK for | |
| 1661 // non-volatile memory refs that happen after the volatile write to float up | |
| 1662 // before it. | |
| 1663 // | |
| 1664 // We only put in barriers around volatile refs (they are expensive), not | |
| 1665 // _between_ memory refs (that would require us to track the flavor of the | |
| 1666 // previous memory refs). Requirements (2) and (3) require some barriers | |
| 1667 // before volatile stores and after volatile loads. These nearly cover | |
| 1668 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
| 1669 // case is placed after volatile-stores although it could just as well go | |
| 1670 // before volatile-loads. | |
| 1671 | |
| 1672 | |
| 1673 void LIRGenerator::do_StoreField(StoreField* x) { | |
| 1674 bool needs_patching = x->needs_patching(); | |
| 1675 bool is_volatile = x->field()->is_volatile(); | |
| 1676 BasicType field_type = x->field_type(); | |
| 1677 bool is_oop = (field_type == T_ARRAY || field_type == T_OBJECT); | |
| 1678 | |
| 1679 CodeEmitInfo* info = NULL; | |
| 1680 if (needs_patching) { | |
| 1681 assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); | |
| 1682 info = state_for(x, x->state_before()); | |
| 1683 } else if (x->needs_null_check()) { | |
| 1684 NullCheck* nc = x->explicit_null_check(); | |
| 1685 if (nc == NULL) { | |
| 1819 | 1686 info = state_for(x); |
| 0 | 1687 } else { |
| 1688 info = state_for(nc); | |
| 1689 } | |
| 1690 } | |
| 1691 | |
| 1692 | |
| 1693 LIRItem object(x->obj(), this); | |
| 1694 LIRItem value(x->value(), this); | |
| 1695 | |
| 1696 object.load_item(); | |
| 1697 | |
| 1698 if (is_volatile || needs_patching) { | |
| 1699 // load item if field is volatile (fewer special cases for volatiles) | |
| 1700 // load item if field not initialized | |
| 1701 // load item if field not constant | |
| 1702 // because of code patching we cannot inline constants | |
| 1703 if (field_type == T_BYTE || field_type == T_BOOLEAN) { | |
| 1704 value.load_byte_item(); | |
| 1705 } else { | |
| 1706 value.load_item(); | |
| 1707 } | |
| 1708 } else { | |
| 1709 value.load_for_store(field_type); | |
| 1710 } | |
| 1711 | |
| 1712 set_no_result(x); | |
| 1713 | |
| 1819 | 1714 #ifndef PRODUCT |
| 0 | 1715 if (PrintNotLoaded && needs_patching) { |
| 1716 tty->print_cr(" ###class not loaded at store_%s bci %d", | |
| 1819 | 1717 x->is_static() ? "static" : "field", x->printable_bci()); |
| 0 | 1718 } |
| 1819 | 1719 #endif |
| 0 | 1720 |
| 1721 if (x->needs_null_check() && | |
| 1722 (needs_patching || | |
| 1723 MacroAssembler::needs_explicit_null_check(x->offset()))) { | |
| 1724 // emit an explicit null check because the offset is too large | |
| 1725 __ null_check(object.result(), new CodeEmitInfo(info)); | |
| 1726 } | |
| 1727 | |
| 1728 LIR_Address* address; | |
| 1729 if (needs_patching) { | |
| 1730 // we need to patch the offset in the instruction so don't allow | |
| 1731 // generate_address to try to be smart about emitting the -1. | |
| 1732 // Otherwise the patching code won't know how to find the | |
| 1733 // instruction to patch. | |
|
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1734 address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
| 0 | 1735 } else { |
| 1736 address = generate_address(object.result(), x->offset(), field_type); | |
| 1737 } | |
| 1738 | |
| 1739 if (is_volatile && os::is_MP()) { | |
| 1740 __ membar_release(); | |
| 1741 } | |
| 1742 | |
| 342 | 1743 if (is_oop) { |
| 1744 // Do the pre-write barrier, if any. | |
| 1745 pre_barrier(LIR_OprFact::address(address), | |
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1746 LIR_OprFact::illegalOpr /* pre_val */, |
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1747 true /* do_load*/, |
| 342 | 1748 needs_patching, |
| 1749 (info ? new CodeEmitInfo(info) : NULL)); | |
| 1750 } | |
| 1751 | |
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1752 if (is_volatile && !needs_patching) { |
| 0 | 1753 volatile_field_store(value.result(), address, info); |
| 1754 } else { | |
| 1755 LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; | |
| 1756 __ store(value.result(), address, info, patch_code); | |
| 1757 } | |
| 1758 | |
| 1759 if (is_oop) { | |
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1760 // Store to object so mark the card of the header |
| 0 | 1761 post_barrier(object.result(), value.result()); |
| 1762 } | |
| 1763 | |
| 1764 if (is_volatile && os::is_MP()) { | |
| 1765 __ membar(); | |
| 1766 } | |
| 1767 } | |
| 1768 | |
| 1769 | |
| 1770 void LIRGenerator::do_LoadField(LoadField* x) { | |
| 1771 bool needs_patching = x->needs_patching(); | |
| 1772 bool is_volatile = x->field()->is_volatile(); | |
| 1773 BasicType field_type = x->field_type(); | |
| 1774 | |
| 1775 CodeEmitInfo* info = NULL; | |
| 1776 if (needs_patching) { | |
| 1777 assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); | |
| 1778 info = state_for(x, x->state_before()); | |
| 1779 } else if (x->needs_null_check()) { | |
| 1780 NullCheck* nc = x->explicit_null_check(); | |
| 1781 if (nc == NULL) { | |
| 1819 | 1782 info = state_for(x); |
| 0 | 1783 } else { |
| 1784 info = state_for(nc); | |
| 1785 } | |
| 1786 } | |
| 1787 | |
| 1788 LIRItem object(x->obj(), this); | |
| 1789 | |
| 1790 object.load_item(); | |
| 1791 | |
| 1819 | 1792 #ifndef PRODUCT |
| 0 | 1793 if (PrintNotLoaded && needs_patching) { |
| 1794 tty->print_cr(" ###class not loaded at load_%s bci %d", | |
| 1819 | 1795 x->is_static() ? "static" : "field", x->printable_bci()); |
| 0 | 1796 } |
| 1819 | 1797 #endif |
| 0 | 1798 |
| 8860 | 1799 bool stress_deopt = StressLoopInvariantCodeMotion && info && info->deoptimize_on_exception(); |
| 0 | 1800 if (x->needs_null_check() && |
| 1801 (needs_patching || | |
| 8860 | 1802 MacroAssembler::needs_explicit_null_check(x->offset()) || |
| 1803 stress_deopt)) { | |
| 1804 LIR_Opr obj = object.result(); | |
| 1805 if (stress_deopt) { | |
| 1806 obj = new_register(T_OBJECT); | |
| 1807 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1808 } | |
| 0 | 1809 // emit an explicit null check because the offset is too large |
| 8860 | 1810 __ null_check(obj, new CodeEmitInfo(info)); |
| 0 | 1811 } |
| 1812 | |
| 1813 LIR_Opr reg = rlock_result(x, field_type); | |
| 1814 LIR_Address* address; | |
| 1815 if (needs_patching) { | |
| 1816 // we need to patch the offset in the instruction so don't allow | |
| 1817 // generate_address to try to be smart about emitting the -1. | |
| 1818 // Otherwise the patching code won't know how to find the | |
| 1819 // instruction to patch. | |
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1820 address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
| 0 | 1821 } else { |
| 1822 address = generate_address(object.result(), x->offset(), field_type); | |
| 1823 } | |
| 1824 | |
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1825 if (is_volatile && !needs_patching) { |
| 0 | 1826 volatile_field_load(address, reg, info); |
| 1827 } else { | |
| 1828 LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; | |
| 1829 __ load(address, reg, info, patch_code); | |
| 1830 } | |
| 1831 | |
| 1832 if (is_volatile && os::is_MP()) { | |
| 1833 __ membar_acquire(); | |
| 1834 } | |
| 1835 } | |
| 1836 | |
| 1837 | |
| 1838 //------------------------java.nio.Buffer.checkIndex------------------------ | |
| 1839 | |
| 1840 // int java.nio.Buffer.checkIndex(int) | |
| 1841 void LIRGenerator::do_NIOCheckIndex(Intrinsic* x) { | |
| 1842 // NOTE: by the time we are in checkIndex() we are guaranteed that | |
| 1843 // the buffer is non-null (because checkIndex is package-private and | |
| 1844 // only called from within other methods in the buffer). | |
| 1845 assert(x->number_of_arguments() == 2, "wrong type"); | |
| 1846 LIRItem buf (x->argument_at(0), this); | |
| 1847 LIRItem index(x->argument_at(1), this); | |
| 1848 buf.load_item(); | |
| 1849 index.load_item(); | |
| 1850 | |
| 1851 LIR_Opr result = rlock_result(x); | |
| 1852 if (GenerateRangeChecks) { | |
| 1853 CodeEmitInfo* info = state_for(x); | |
| 1854 CodeStub* stub = new RangeCheckStub(info, index.result(), true); | |
| 1855 if (index.result()->is_constant()) { | |
| 1856 cmp_mem_int(lir_cond_belowEqual, buf.result(), java_nio_Buffer::limit_offset(), index.result()->as_jint(), info); | |
| 1857 __ branch(lir_cond_belowEqual, T_INT, stub); | |
| 1858 } else { | |
| 1859 cmp_reg_mem(lir_cond_aboveEqual, index.result(), buf.result(), | |
| 1860 java_nio_Buffer::limit_offset(), T_INT, info); | |
| 1861 __ branch(lir_cond_aboveEqual, T_INT, stub); | |
| 1862 } | |
| 1863 __ move(index.result(), result); | |
| 1864 } else { | |
| 1865 // Just load the index into the result register | |
| 1866 __ move(index.result(), result); | |
| 1867 } | |
| 1868 } | |
| 1869 | |
| 1870 | |
| 1871 //------------------------array access-------------------------------------- | |
| 1872 | |
| 1873 | |
| 1874 void LIRGenerator::do_ArrayLength(ArrayLength* x) { | |
| 8860 | 1875 if (x->use_count() == 0 && !x->can_trap()) return; |
| 1876 | |
| 0 | 1877 LIRItem array(x->array(), this); |
| 1878 array.load_item(); | |
| 1879 LIR_Opr reg = rlock_result(x); | |
| 1880 | |
| 1881 CodeEmitInfo* info = NULL; | |
| 1882 if (x->needs_null_check()) { | |
| 1883 NullCheck* nc = x->explicit_null_check(); | |
| 1884 if (nc == NULL) { | |
| 1885 info = state_for(x); | |
| 1886 } else { | |
| 1887 info = state_for(nc); | |
| 1888 } | |
| 8860 | 1889 if (StressLoopInvariantCodeMotion && info->deoptimize_on_exception()) { |
| 1890 LIR_Opr obj = new_register(T_OBJECT); | |
| 1891 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1892 __ null_check(obj, new CodeEmitInfo(info)); | |
| 1893 } | |
| 0 | 1894 } |
| 1895 __ load(new LIR_Address(array.result(), arrayOopDesc::length_offset_in_bytes(), T_INT), reg, info, lir_patch_none); | |
| 1896 } | |
| 1897 | |
| 1898 | |
| 1899 void LIRGenerator::do_LoadIndexed(LoadIndexed* x) { | |
| 1900 bool use_length = x->length() != NULL; | |
| 1901 LIRItem array(x->array(), this); | |
| 1902 LIRItem index(x->index(), this); | |
| 1903 LIRItem length(this); | |
| 8860 | 1904 bool needs_range_check = x->compute_needs_range_check(); |
| 1905 | |
| 1906 if (use_length && needs_range_check) { | |
| 1907 length.set_instruction(x->length()); | |
| 1908 length.load_item(); | |
| 0 | 1909 } |
| 1910 | |
| 1911 array.load_item(); | |
| 1912 if (index.is_constant() && can_inline_as_constant(x->index())) { | |
| 1913 // let it be a constant | |
| 1914 index.dont_load_item(); | |
| 1915 } else { | |
| 1916 index.load_item(); | |
| 1917 } | |
| 1918 | |
| 1919 CodeEmitInfo* range_check_info = state_for(x); | |
| 1920 CodeEmitInfo* null_check_info = NULL; | |
| 1921 if (x->needs_null_check()) { | |
| 1922 NullCheck* nc = x->explicit_null_check(); | |
| 1923 if (nc != NULL) { | |
| 1924 null_check_info = state_for(nc); | |
| 1925 } else { | |
| 1926 null_check_info = range_check_info; | |
| 1927 } | |
| 8860 | 1928 if (StressLoopInvariantCodeMotion && null_check_info->deoptimize_on_exception()) { |
| 1929 LIR_Opr obj = new_register(T_OBJECT); | |
| 1930 __ move(LIR_OprFact::oopConst(NULL), obj); | |
| 1931 __ null_check(obj, new CodeEmitInfo(null_check_info)); | |
| 1932 } | |
| 0 | 1933 } |
| 1934 | |
| 1935 // emit array address setup early so it schedules better | |
| 1936 LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), false); | |
| 1937 | |
| 1938 if (GenerateRangeChecks && needs_range_check) { | |
| 8860 | 1939 if (StressLoopInvariantCodeMotion && range_check_info->deoptimize_on_exception()) { |
| 1940 __ branch(lir_cond_always, T_ILLEGAL, new RangeCheckStub(range_check_info, index.result())); | |
| 1941 } else if (use_length) { | |
| 0 | 1942 // TODO: use a (modified) version of array_range_check that does not require a |
| 1943 // constant length to be loaded to a register | |
| 1944 __ cmp(lir_cond_belowEqual, length.result(), index.result()); | |
| 1945 __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); | |
| 1946 } else { | |
| 1947 array_range_check(array.result(), index.result(), null_check_info, range_check_info); | |
| 1948 // The range check performs the null check, so clear it out for the load | |
| 1949 null_check_info = NULL; | |
| 1950 } | |
| 1951 } | |
| 1952 | |
| 1953 __ move(array_addr, rlock_result(x, x->elt_type()), null_check_info); | |
| 1954 } | |
| 1955 | |
| 1956 | |
| 1957 void LIRGenerator::do_NullCheck(NullCheck* x) { | |
| 1958 if (x->can_trap()) { | |
| 1959 LIRItem value(x->obj(), this); | |
| 1960 value.load_item(); | |
| 1961 CodeEmitInfo* info = state_for(x); | |
| 1962 __ null_check(value.result(), info); | |
| 1963 } | |
| 1964 } | |
| 1965 | |
| 1966 | |
|
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1967 void LIRGenerator::do_TypeCast(TypeCast* x) { |
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1968 LIRItem value(x->obj(), this); |
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1969 value.load_item(); |
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1970 // the result is the same as from the node we are casting |
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1971 set_result(x, value.result()); |
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1972 } |
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1973 |
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1974 |
| 0 | 1975 void LIRGenerator::do_Throw(Throw* x) { |
| 1976 LIRItem exception(x->exception(), this); | |
| 1977 exception.load_item(); | |
| 1978 set_no_result(x); | |
| 1979 LIR_Opr exception_opr = exception.result(); | |
| 1980 CodeEmitInfo* info = state_for(x, x->state()); | |
| 1981 | |
| 1982 #ifndef PRODUCT | |
| 1983 if (PrintC1Statistics) { | |
| 1783 | 1984 increment_counter(Runtime1::throw_count_address(), T_INT); |
| 0 | 1985 } |
| 1986 #endif | |
| 1987 | |
| 1988 // check if the instruction has an xhandler in any of the nested scopes | |
| 1989 bool unwind = false; | |
| 1990 if (info->exception_handlers()->length() == 0) { | |
| 1991 // this throw is not inside an xhandler | |
| 1992 unwind = true; | |
| 1993 } else { | |
| 1994 // get some idea of the throw type | |
| 1995 bool type_is_exact = true; | |
| 1996 ciType* throw_type = x->exception()->exact_type(); | |
| 1997 if (throw_type == NULL) { | |
| 1998 type_is_exact = false; | |
| 1999 throw_type = x->exception()->declared_type(); | |
| 2000 } | |
| 2001 if (throw_type != NULL && throw_type->is_instance_klass()) { | |
| 2002 ciInstanceKlass* throw_klass = (ciInstanceKlass*)throw_type; | |
| 2003 unwind = !x->exception_handlers()->could_catch(throw_klass, type_is_exact); | |
| 2004 } | |
| 2005 } | |
| 2006 | |
| 2007 // do null check before moving exception oop into fixed register | |
| 2008 // to avoid a fixed interval with an oop during the null check. | |
| 2009 // Use a copy of the CodeEmitInfo because debug information is | |
| 2010 // different for null_check and throw. | |
| 2011 if (GenerateCompilerNullChecks && | |
| 2012 (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) { | |
| 2013 // if the exception object wasn't created using new then it might be null. | |
| 1819 | 2014 __ null_check(exception_opr, new CodeEmitInfo(info, x->state()->copy(ValueStack::ExceptionState, x->state()->bci()))); |
| 0 | 2015 } |
| 2016 | |
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2017 if (compilation()->env()->jvmti_can_post_on_exceptions()) { |
| 0 | 2018 // we need to go through the exception lookup path to get JVMTI |
| 2019 // notification done | |
| 2020 unwind = false; | |
| 2021 } | |
| 2022 | |
| 2023 // move exception oop into fixed register | |
| 2024 __ move(exception_opr, exceptionOopOpr()); | |
| 2025 | |
| 2026 if (unwind) { | |
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2027 __ unwind_exception(exceptionOopOpr()); |
| 0 | 2028 } else { |
| 2029 __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info); | |
| 2030 } | |
| 2031 } | |
| 2032 | |
| 2033 | |
| 2034 void LIRGenerator::do_RoundFP(RoundFP* x) { | |
| 2035 LIRItem input(x->input(), this); | |
| 2036 input.load_item(); | |
| 2037 LIR_Opr input_opr = input.result(); | |
| 2038 assert(input_opr->is_register(), "why round if value is not in a register?"); | |
| 2039 assert(input_opr->is_single_fpu() || input_opr->is_double_fpu(), "input should be floating-point value"); | |
| 2040 if (input_opr->is_single_fpu()) { | |
| 2041 set_result(x, round_item(input_opr)); // This code path not currently taken | |
| 2042 } else { | |
| 2043 LIR_Opr result = new_register(T_DOUBLE); | |
| 2044 set_vreg_flag(result, must_start_in_memory); | |
| 2045 __ roundfp(input_opr, LIR_OprFact::illegalOpr, result); | |
| 2046 set_result(x, result); | |
| 2047 } | |
| 2048 } | |
| 2049 | |
| 2050 void LIRGenerator::do_UnsafeGetRaw(UnsafeGetRaw* x) { | |
| 2051 LIRItem base(x->base(), this); | |
| 2052 LIRItem idx(this); | |
| 2053 | |
| 2054 base.load_item(); | |
| 2055 if (x->has_index()) { | |
| 2056 idx.set_instruction(x->index()); | |
| 2057 idx.load_nonconstant(); | |
| 2058 } | |
| 2059 | |
| 2060 LIR_Opr reg = rlock_result(x, x->basic_type()); | |
| 2061 | |
| 2062 int log2_scale = 0; | |
| 2063 if (x->has_index()) { | |
| 2064 assert(x->index()->type()->tag() == intTag, "should not find non-int index"); | |
| 2065 log2_scale = x->log2_scale(); | |
| 2066 } | |
| 2067 | |
| 2068 assert(!x->has_index() || idx.value() == x->index(), "should match"); | |
| 2069 | |
| 2070 LIR_Opr base_op = base.result(); | |
| 2071 #ifndef _LP64 | |
| 2072 if (x->base()->type()->tag() == longTag) { | |
| 2073 base_op = new_register(T_INT); | |
| 2074 __ convert(Bytecodes::_l2i, base.result(), base_op); | |
| 2075 } else { | |
| 2076 assert(x->base()->type()->tag() == intTag, "must be"); | |
| 2077 } | |
| 2078 #endif | |
| 2079 | |
| 2080 BasicType dst_type = x->basic_type(); | |
| 2081 LIR_Opr index_op = idx.result(); | |
| 2082 | |
| 2083 LIR_Address* addr; | |
| 2084 if (index_op->is_constant()) { | |
| 2085 assert(log2_scale == 0, "must not have a scale"); | |
| 2086 addr = new LIR_Address(base_op, index_op->as_jint(), dst_type); | |
| 2087 } else { | |
| 304 | 2088 #ifdef X86 |
| 1060 | 2089 #ifdef _LP64 |
| 2090 if (!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2091 LIR_Opr tmp = new_pointer_register(); | |
| 2092 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2093 index_op = tmp; | |
| 2094 } | |
| 2095 #endif | |
| 0 | 2096 addr = new LIR_Address(base_op, index_op, LIR_Address::Scale(log2_scale), 0, dst_type); |
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2097 #elif defined(ARM) |
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2098 addr = generate_address(base_op, index_op, log2_scale, 0, dst_type); |
| 0 | 2099 #else |
| 2100 if (index_op->is_illegal() || log2_scale == 0) { | |
| 1060 | 2101 #ifdef _LP64 |
| 2102 if (!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2103 LIR_Opr tmp = new_pointer_register(); | |
| 2104 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2105 index_op = tmp; | |
| 2106 } | |
| 2107 #endif | |
| 0 | 2108 addr = new LIR_Address(base_op, index_op, dst_type); |
| 2109 } else { | |
| 1060 | 2110 LIR_Opr tmp = new_pointer_register(); |
| 0 | 2111 __ shift_left(index_op, log2_scale, tmp); |
| 2112 addr = new LIR_Address(base_op, tmp, dst_type); | |
| 2113 } | |
| 2114 #endif | |
| 2115 } | |
| 2116 | |
| 2117 if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) { | |
| 2118 __ unaligned_move(addr, reg); | |
| 2119 } else { | |
| 2002 | 2120 if (dst_type == T_OBJECT && x->is_wide()) { |
| 2121 __ move_wide(addr, reg); | |
| 2122 } else { | |
| 2123 __ move(addr, reg); | |
| 2124 } | |
| 0 | 2125 } |
| 2126 } | |
| 2127 | |
| 2128 | |
| 2129 void LIRGenerator::do_UnsafePutRaw(UnsafePutRaw* x) { | |
| 2130 int log2_scale = 0; | |
| 2131 BasicType type = x->basic_type(); | |
| 2132 | |
| 2133 if (x->has_index()) { | |
| 2134 assert(x->index()->type()->tag() == intTag, "should not find non-int index"); | |
| 2135 log2_scale = x->log2_scale(); | |
| 2136 } | |
| 2137 | |
| 2138 LIRItem base(x->base(), this); | |
| 2139 LIRItem value(x->value(), this); | |
| 2140 LIRItem idx(this); | |
| 2141 | |
| 2142 base.load_item(); | |
| 2143 if (x->has_index()) { | |
| 2144 idx.set_instruction(x->index()); | |
| 2145 idx.load_item(); | |
| 2146 } | |
| 2147 | |
| 2148 if (type == T_BYTE || type == T_BOOLEAN) { | |
| 2149 value.load_byte_item(); | |
| 2150 } else { | |
| 2151 value.load_item(); | |
| 2152 } | |
| 2153 | |
| 2154 set_no_result(x); | |
| 2155 | |
| 2156 LIR_Opr base_op = base.result(); | |
| 2157 #ifndef _LP64 | |
| 2158 if (x->base()->type()->tag() == longTag) { | |
| 2159 base_op = new_register(T_INT); | |
| 2160 __ convert(Bytecodes::_l2i, base.result(), base_op); | |
| 2161 } else { | |
| 2162 assert(x->base()->type()->tag() == intTag, "must be"); | |
| 2163 } | |
| 2164 #endif | |
| 2165 | |
| 2166 LIR_Opr index_op = idx.result(); | |
| 2167 if (log2_scale != 0) { | |
| 2168 // temporary fix (platform dependent code without shift on Intel would be better) | |
| 1060 | 2169 index_op = new_pointer_register(); |
| 2170 #ifdef _LP64 | |
| 2171 if(idx.result()->type() == T_INT) { | |
| 2172 __ convert(Bytecodes::_i2l, idx.result(), index_op); | |
| 2173 } else { | |
| 2174 #endif | |
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2175 // TODO: ARM also allows embedded shift in the address |
| 1060 | 2176 __ move(idx.result(), index_op); |
| 2177 #ifdef _LP64 | |
| 2178 } | |
| 2179 #endif | |
| 0 | 2180 __ shift_left(index_op, log2_scale, index_op); |
| 2181 } | |
| 1060 | 2182 #ifdef _LP64 |
| 2183 else if(!index_op->is_illegal() && index_op->type() == T_INT) { | |
| 2184 LIR_Opr tmp = new_pointer_register(); | |
| 2185 __ convert(Bytecodes::_i2l, index_op, tmp); | |
| 2186 index_op = tmp; | |
| 2187 } | |
| 2188 #endif | |
| 0 | 2189 |
| 2190 LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type()); | |
| 2191 __ move(value.result(), addr); | |
| 2192 } | |
| 2193 | |
| 2194 | |
| 2195 void LIRGenerator::do_UnsafeGetObject(UnsafeGetObject* x) { | |
| 2196 BasicType type = x->basic_type(); | |
| 2197 LIRItem src(x->object(), this); | |
| 2198 LIRItem off(x->offset(), this); | |
| 2199 | |
| 2200 off.load_item(); | |
| 2201 src.load_item(); | |
| 2202 | |
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2203 LIR_Opr value = rlock_result(x, x->basic_type()); |
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2204 |
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2205 get_Object_unsafe(value, src.result(), off.result(), type, x->is_volatile()); |
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2206 |
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2207 #if INCLUDE_ALL_GCS |
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2208 // We might be reading the value of the referent field of a |
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2209 // Reference object in order to attach it back to the live |
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2210 // object graph. If G1 is enabled then we need to record |
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2211 // the value that is being returned in an SATB log buffer. |
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2212 // |
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2213 // We need to generate code similar to the following... |
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2214 // |
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2215 // if (offset == java_lang_ref_Reference::referent_offset) { |
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2216 // if (src != NULL) { |
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2217 // if (klass(src)->reference_type() != REF_NONE) { |
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2218 // pre_barrier(..., value, ...); |
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2219 // } |
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2220 // } |
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2221 // } |
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2222 |
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2223 if (UseG1GC && type == T_OBJECT) { |
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2224 bool gen_pre_barrier = true; // Assume we need to generate pre_barrier. |
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2225 bool gen_offset_check = true; // Assume we need to generate the offset guard. |
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2226 bool gen_source_check = true; // Assume we need to check the src object for null. |
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2227 bool gen_type_check = true; // Assume we need to check the reference_type. |
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2228 |
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2229 if (off.is_constant()) { |
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2230 jlong off_con = (off.type()->is_int() ? |
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2231 (jlong) off.get_jint_constant() : |
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2232 off.get_jlong_constant()); |
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2233 |
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2234 |
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2235 if (off_con != (jlong) java_lang_ref_Reference::referent_offset) { |
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2236 // The constant offset is something other than referent_offset. |
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2237 // We can skip generating/checking the remaining guards and |
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2238 // skip generation of the code stub. |
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2239 gen_pre_barrier = false; |
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2240 } else { |
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2241 // The constant offset is the same as referent_offset - |
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2242 // we do not need to generate a runtime offset check. |
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2243 gen_offset_check = false; |
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2244 } |
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2245 } |
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2246 |
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2247 // We don't need to generate stub if the source object is an array |
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2248 if (gen_pre_barrier && src.type()->is_array()) { |
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2249 gen_pre_barrier = false; |
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2250 } |
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2251 |
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2252 if (gen_pre_barrier) { |
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2253 // We still need to continue with the checks. |
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2254 if (src.is_constant()) { |
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2255 ciObject* src_con = src.get_jobject_constant(); |
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2256 |
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2257 if (src_con->is_null_object()) { |
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2258 // The constant src object is null - We can skip |
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|
2259 // generating the code stub. |
|
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2260 gen_pre_barrier = false; |
|
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2261 } else { |
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|
2262 // Non-null constant source object. We still have to generate |
|
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2263 // the slow stub - but we don't need to generate the runtime |
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2264 // null object check. |
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2265 gen_source_check = false; |
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2266 } |
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2267 } |
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2268 } |
|
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2269 if (gen_pre_barrier && !PatchALot) { |
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2270 // Can the klass of object be statically determined to be |
|
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2271 // a sub-class of Reference? |
|
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2272 ciType* type = src.value()->declared_type(); |
|
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2273 if ((type != NULL) && type->is_loaded()) { |
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2274 if (type->is_subtype_of(compilation()->env()->Reference_klass())) { |
|
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2275 gen_type_check = false; |
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2276 } else if (type->is_klass() && |
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2277 !compilation()->env()->Object_klass()->is_subtype_of(type->as_klass())) { |
|
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2278 // Not Reference and not Object klass. |
|
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2279 gen_pre_barrier = false; |
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2280 } |
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2281 } |
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2282 } |
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2283 |
|
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2284 if (gen_pre_barrier) { |
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2285 LabelObj* Lcont = new LabelObj(); |
|
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2286 |
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2287 // We can have generate one runtime check here. Let's start with |
|
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2288 // the offset check. |
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2289 if (gen_offset_check) { |
|
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2290 // if (offset != referent_offset) -> continue |
|
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|
2291 // If offset is an int then we can do the comparison with the |
|
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2292 // referent_offset constant; otherwise we need to move |
|
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2293 // referent_offset into a temporary register and generate |
|
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|
2294 // a reg-reg compare. |
|
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2295 |
|
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|
2296 LIR_Opr referent_off; |
|
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2297 |
|
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|
2298 if (off.type()->is_int()) { |
|
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|
2299 referent_off = LIR_OprFact::intConst(java_lang_ref_Reference::referent_offset); |
|
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2300 } else { |
|
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|
2301 assert(off.type()->is_long(), "what else?"); |
|
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|
2302 referent_off = new_register(T_LONG); |
|
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|
2303 __ move(LIR_OprFact::longConst(java_lang_ref_Reference::referent_offset), referent_off); |
|
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|
2304 } |
|
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2305 __ cmp(lir_cond_notEqual, off.result(), referent_off); |
|
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2306 __ branch(lir_cond_notEqual, as_BasicType(off.type()), Lcont->label()); |
|
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2307 } |
|
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2308 if (gen_source_check) { |
|
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2309 // offset is a const and equals referent offset |
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2310 // if (source == null) -> continue |
|
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2311 __ cmp(lir_cond_equal, src.result(), LIR_OprFact::oopConst(NULL)); |
|
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2312 __ branch(lir_cond_equal, T_OBJECT, Lcont->label()); |
|
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|
2313 } |
|
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2314 LIR_Opr src_klass = new_register(T_OBJECT); |
|
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2315 if (gen_type_check) { |
|
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2316 // We have determined that offset == referent_offset && src != null. |
|
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2317 // if (src->_klass->_reference_type == REF_NONE) -> continue |
| 6731 | 2318 __ move(new LIR_Address(src.result(), oopDesc::klass_offset_in_bytes(), UseCompressedKlassPointers ? T_OBJECT : T_ADDRESS), src_klass); |
|
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|
2319 LIR_Address* reference_type_addr = new LIR_Address(src_klass, in_bytes(InstanceKlass::reference_type_offset()), T_BYTE); |
|
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2320 LIR_Opr reference_type = new_register(T_INT); |
|
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2321 __ move(reference_type_addr, reference_type); |
|
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2322 __ cmp(lir_cond_equal, reference_type, LIR_OprFact::intConst(REF_NONE)); |
|
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|
2323 __ branch(lir_cond_equal, T_INT, Lcont->label()); |
|
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|
2324 } |
|
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|
2325 { |
|
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|
2326 // We have determined that src->_klass->_reference_type != REF_NONE |
|
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|
2327 // so register the value in the referent field with the pre-barrier. |
|
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|
2328 pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */, |
|
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|
2329 value /* pre_val */, |
|
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|
2330 false /* do_load */, |
|
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|
2331 false /* patch */, |
|
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|
2332 NULL /* info */); |
|
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|
2333 } |
|
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|
2334 __ branch_destination(Lcont->label()); |
|
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|
2335 } |
|
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|
2336 } |
|
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|
2337 #endif // INCLUDE_ALL_GCS |
|
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|
2338 |
| 0 | 2339 if (x->is_volatile() && os::is_MP()) __ membar_acquire(); |
| 2340 } | |
| 2341 | |
| 2342 | |
| 2343 void LIRGenerator::do_UnsafePutObject(UnsafePutObject* x) { | |
| 2344 BasicType type = x->basic_type(); | |
| 2345 LIRItem src(x->object(), this); | |
| 2346 LIRItem off(x->offset(), this); | |
| 2347 LIRItem data(x->value(), this); | |
| 2348 | |
| 2349 src.load_item(); | |
| 2350 if (type == T_BOOLEAN || type == T_BYTE) { | |
| 2351 data.load_byte_item(); | |
| 2352 } else { | |
| 2353 data.load_item(); | |
| 2354 } | |
| 2355 off.load_item(); | |
| 2356 | |
| 2357 set_no_result(x); | |
| 2358 | |
| 2359 if (x->is_volatile() && os::is_MP()) __ membar_release(); | |
| 2360 put_Object_unsafe(src.result(), off.result(), data.result(), type, x->is_volatile()); | |
|
2123
df307487d610
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|
2361 if (x->is_volatile() && os::is_MP()) __ membar(); |
| 0 | 2362 } |
| 2363 | |
| 2364 | |
| 2365 void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) { | |
| 2366 LIRItem src(x->object(), this); | |
| 2367 LIRItem off(x->offset(), this); | |
| 2368 | |
| 2369 src.load_item(); | |
| 2370 if (off.is_constant() && can_inline_as_constant(x->offset())) { | |
| 2371 // let it be a constant | |
| 2372 off.dont_load_item(); | |
| 2373 } else { | |
| 2374 off.load_item(); | |
| 2375 } | |
| 2376 | |
| 2377 set_no_result(x); | |
| 2378 | |
| 2379 LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE); | |
| 2380 __ prefetch(addr, is_store); | |
| 2381 } | |
| 2382 | |
| 2383 | |
| 2384 void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) { | |
| 2385 do_UnsafePrefetch(x, false); | |
| 2386 } | |
| 2387 | |
| 2388 | |
| 2389 void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { | |
| 2390 do_UnsafePrefetch(x, true); | |
| 2391 } | |
| 2392 | |
| 2393 | |
| 2394 void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) { | |
| 2395 int lng = x->length(); | |
| 2396 | |
| 2397 for (int i = 0; i < lng; i++) { | |
| 2398 SwitchRange* one_range = x->at(i); | |
| 2399 int low_key = one_range->low_key(); | |
| 2400 int high_key = one_range->high_key(); | |
| 2401 BlockBegin* dest = one_range->sux(); | |
| 2402 if (low_key == high_key) { | |
| 2403 __ cmp(lir_cond_equal, value, low_key); | |
| 2404 __ branch(lir_cond_equal, T_INT, dest); | |
| 2405 } else if (high_key - low_key == 1) { | |
| 2406 __ cmp(lir_cond_equal, value, low_key); | |
| 2407 __ branch(lir_cond_equal, T_INT, dest); | |
| 2408 __ cmp(lir_cond_equal, value, high_key); | |
| 2409 __ branch(lir_cond_equal, T_INT, dest); | |
| 2410 } else { | |
| 2411 LabelObj* L = new LabelObj(); | |
| 2412 __ cmp(lir_cond_less, value, low_key); | |
| 4816 | 2413 __ branch(lir_cond_less, T_INT, L->label()); |
| 0 | 2414 __ cmp(lir_cond_lessEqual, value, high_key); |
| 2415 __ branch(lir_cond_lessEqual, T_INT, dest); | |
| 2416 __ branch_destination(L->label()); | |
| 2417 } | |
| 2418 } | |
| 2419 __ jump(default_sux); | |
| 2420 } | |
| 2421 | |
| 2422 | |
| 2423 SwitchRangeArray* LIRGenerator::create_lookup_ranges(TableSwitch* x) { | |
| 2424 SwitchRangeList* res = new SwitchRangeList(); | |
| 2425 int len = x->length(); | |
| 2426 if (len > 0) { | |
| 2427 BlockBegin* sux = x->sux_at(0); | |
| 2428 int key = x->lo_key(); | |
| 2429 BlockBegin* default_sux = x->default_sux(); | |
| 2430 SwitchRange* range = new SwitchRange(key, sux); | |
| 2431 for (int i = 0; i < len; i++, key++) { | |
| 2432 BlockBegin* new_sux = x->sux_at(i); | |
| 2433 if (sux == new_sux) { | |
| 2434 // still in same range | |
| 2435 range->set_high_key(key); | |
| 2436 } else { | |
| 2437 // skip tests which explicitly dispatch to the default | |
| 2438 if (sux != default_sux) { | |
| 2439 res->append(range); | |
| 2440 } | |
| 2441 range = new SwitchRange(key, new_sux); | |
| 2442 } | |
| 2443 sux = new_sux; | |
| 2444 } | |
| 2445 if (res->length() == 0 || res->last() != range) res->append(range); | |
| 2446 } | |
| 2447 return res; | |
| 2448 } | |
| 2449 | |
| 2450 | |
| 2451 // we expect the keys to be sorted by increasing value | |
| 2452 SwitchRangeArray* LIRGenerator::create_lookup_ranges(LookupSwitch* x) { | |
| 2453 SwitchRangeList* res = new SwitchRangeList(); | |
| 2454 int len = x->length(); | |
| 2455 if (len > 0) { | |
| 2456 BlockBegin* default_sux = x->default_sux(); | |
| 2457 int key = x->key_at(0); | |
| 2458 BlockBegin* sux = x->sux_at(0); | |
| 2459 SwitchRange* range = new SwitchRange(key, sux); | |
| 2460 for (int i = 1; i < len; i++) { | |
| 2461 int new_key = x->key_at(i); | |
| 2462 BlockBegin* new_sux = x->sux_at(i); | |
| 2463 if (key+1 == new_key && sux == new_sux) { | |
| 2464 // still in same range | |
| 2465 range->set_high_key(new_key); | |
| 2466 } else { | |
| 2467 // skip tests which explicitly dispatch to the default | |
| 2468 if (range->sux() != default_sux) { | |
| 2469 res->append(range); | |
| 2470 } | |
| 2471 range = new SwitchRange(new_key, new_sux); | |
| 2472 } | |
| 2473 key = new_key; | |
| 2474 sux = new_sux; | |
| 2475 } | |
| 2476 if (res->length() == 0 || res->last() != range) res->append(range); | |
| 2477 } | |
| 2478 return res; | |
| 2479 } | |
| 2480 | |
| 2481 | |
| 2482 void LIRGenerator::do_TableSwitch(TableSwitch* x) { | |
| 2483 LIRItem tag(x->tag(), this); | |
| 2484 tag.load_item(); | |
| 2485 set_no_result(x); | |
| 2486 | |
| 2487 if (x->is_safepoint()) { | |
| 2488 __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); | |
| 2489 } | |
| 2490 | |
| 2491 // move values into phi locations | |
| 2492 move_to_phi(x->state()); | |
| 2493 | |
| 2494 int lo_key = x->lo_key(); | |
| 2495 int hi_key = x->hi_key(); | |
| 2496 int len = x->length(); | |
| 2497 LIR_Opr value = tag.result(); | |
| 2498 if (UseTableRanges) { | |
| 2499 do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); | |
| 2500 } else { | |
| 2501 for (int i = 0; i < len; i++) { | |
| 2502 __ cmp(lir_cond_equal, value, i + lo_key); | |
| 2503 __ branch(lir_cond_equal, T_INT, x->sux_at(i)); | |
| 2504 } | |
| 2505 __ jump(x->default_sux()); | |
| 2506 } | |
| 2507 } | |
| 2508 | |
| 2509 | |
| 2510 void LIRGenerator::do_LookupSwitch(LookupSwitch* x) { | |
| 2511 LIRItem tag(x->tag(), this); | |
| 2512 tag.load_item(); | |
| 2513 set_no_result(x); | |
| 2514 | |
| 2515 if (x->is_safepoint()) { | |
| 2516 __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); | |
| 2517 } | |
| 2518 | |
| 2519 // move values into phi locations | |
| 2520 move_to_phi(x->state()); | |
| 2521 | |
| 2522 LIR_Opr value = tag.result(); | |
| 2523 if (UseTableRanges) { | |
| 2524 do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); | |
| 2525 } else { | |
| 2526 int len = x->length(); | |
| 2527 for (int i = 0; i < len; i++) { | |
| 2528 __ cmp(lir_cond_equal, value, x->key_at(i)); | |
| 2529 __ branch(lir_cond_equal, T_INT, x->sux_at(i)); | |
| 2530 } | |
| 2531 __ jump(x->default_sux()); | |
| 2532 } | |
| 2533 } | |
| 2534 | |
| 2535 | |
| 2536 void LIRGenerator::do_Goto(Goto* x) { | |
| 2537 set_no_result(x); | |
| 2538 | |
| 2539 if (block()->next()->as_OsrEntry()) { | |
| 2540 // need to free up storage used for OSR entry point | |
| 2541 LIR_Opr osrBuffer = block()->next()->operand(); | |
| 2542 BasicTypeList signature; | |
| 2543 signature.append(T_INT); | |
| 2544 CallingConvention* cc = frame_map()->c_calling_convention(&signature); | |
| 2545 __ move(osrBuffer, cc->args()->at(0)); | |
| 2546 __ call_runtime_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_end), | |
| 2547 getThreadTemp(), LIR_OprFact::illegalOpr, cc->args()); | |
| 2548 } | |
| 2549 | |
| 2550 if (x->is_safepoint()) { | |
| 2551 ValueStack* state = x->state_before() ? x->state_before() : x->state(); | |
| 2552 | |
| 2553 // increment backedge counter if needed | |
| 1783 | 2554 CodeEmitInfo* info = state_for(x, state); |
|
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2555 increment_backedge_counter(info, x->profiled_bci()); |
| 0 | 2556 CodeEmitInfo* safepoint_info = state_for(x, state); |
| 2557 __ safepoint(safepoint_poll_register(), safepoint_info); | |
| 2558 } | |
| 2559 | |
| 1783 | 2560 // Gotos can be folded Ifs, handle this case. |
| 2561 if (x->should_profile()) { | |
| 2562 ciMethod* method = x->profiled_method(); | |
| 2563 assert(method != NULL, "method should be set if branch is profiled"); | |
|
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2564 ciMethodData* md = method->method_data_or_null(); |
|
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|
2565 assert(md != NULL, "Sanity"); |
| 1783 | 2566 ciProfileData* data = md->bci_to_data(x->profiled_bci()); |
| 2567 assert(data != NULL, "must have profiling data"); | |
| 2568 int offset; | |
| 2569 if (x->direction() == Goto::taken) { | |
| 2570 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 2571 offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); | |
| 2572 } else if (x->direction() == Goto::not_taken) { | |
| 2573 assert(data->is_BranchData(), "need BranchData for two-way branches"); | |
| 2574 offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); | |
| 2575 } else { | |
| 2576 assert(data->is_JumpData(), "need JumpData for branches"); | |
| 2577 offset = md->byte_offset_of_slot(data, JumpData::taken_offset()); | |
| 2578 } | |
|
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2579 LIR_Opr md_reg = new_register(T_METADATA); |
|
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2580 __ metadata2reg(md->constant_encoding(), md_reg); |
| 1783 | 2581 |
| 2582 increment_counter(new LIR_Address(md_reg, offset, | |
| 2583 NOT_LP64(T_INT) LP64_ONLY(T_LONG)), DataLayout::counter_increment); | |
| 2584 } | |
| 2585 | |
| 0 | 2586 // emit phi-instruction move after safepoint since this simplifies |
| 2587 // describing the state as the safepoint. | |
| 2588 move_to_phi(x->state()); | |
| 2589 | |
| 2590 __ jump(x->default_sux()); | |
| 2591 } | |
| 2592 | |
| 2593 | |
| 2594 void LIRGenerator::do_Base(Base* x) { | |
| 2595 __ std_entry(LIR_OprFact::illegalOpr); | |
| 2596 // Emit moves from physical registers / stack slots to virtual registers | |
| 2597 CallingConvention* args = compilation()->frame_map()->incoming_arguments(); | |
| 2598 IRScope* irScope = compilation()->hir()->top_scope(); | |
| 2599 int java_index = 0; | |
| 2600 for (int i = 0; i < args->length(); i++) { | |
| 2601 LIR_Opr src = args->at(i); | |
| 2602 assert(!src->is_illegal(), "check"); | |
| 2603 BasicType t = src->type(); | |
| 2604 | |
| 2605 // Types which are smaller than int are passed as int, so | |
| 2606 // correct the type which passed. | |
| 2607 switch (t) { | |
| 2608 case T_BYTE: | |
| 2609 case T_BOOLEAN: | |
| 2610 case T_SHORT: | |
| 2611 case T_CHAR: | |
| 2612 t = T_INT; | |
| 2613 break; | |
| 2614 } | |
| 2615 | |
| 2616 LIR_Opr dest = new_register(t); | |
| 2617 __ move(src, dest); | |
| 2618 | |
| 2619 // Assign new location to Local instruction for this local | |
| 2620 Local* local = x->state()->local_at(java_index)->as_Local(); | |
| 2621 assert(local != NULL, "Locals for incoming arguments must have been created"); | |
|
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2622 #ifndef __SOFTFP__ |
|
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2623 // The java calling convention passes double as long and float as int. |
| 0 | 2624 assert(as_ValueType(t)->tag() == local->type()->tag(), "check"); |
|
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2625 #endif // __SOFTFP__ |
| 0 | 2626 local->set_operand(dest); |
| 2627 _instruction_for_operand.at_put_grow(dest->vreg_number(), local, NULL); | |
| 2628 java_index += type2size[t]; | |
| 2629 } | |
| 2630 | |
|
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|
2631 if (compilation()->env()->dtrace_method_probes()) { |
| 0 | 2632 BasicTypeList signature; |
| 2002 | 2633 signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
|
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|
2634 signature.append(T_OBJECT); // Method* |
| 0 | 2635 LIR_OprList* args = new LIR_OprList(); |
| 2636 args->append(getThreadPointer()); | |
|
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|
2637 LIR_Opr meth = new_register(T_METADATA); |
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|
2638 __ metadata2reg(method()->constant_encoding(), meth); |
| 0 | 2639 args->append(meth); |
| 2640 call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), voidType, NULL); | |
| 2641 } | |
| 2642 | |
| 2643 if (method()->is_synchronized()) { | |
| 2644 LIR_Opr obj; | |
| 2645 if (method()->is_static()) { | |
| 2646 obj = new_register(T_OBJECT); | |
|
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2647 __ oop2reg(method()->holder()->java_mirror()->constant_encoding(), obj); |
| 0 | 2648 } else { |
| 2649 Local* receiver = x->state()->local_at(0)->as_Local(); | |
| 2650 assert(receiver != NULL, "must already exist"); | |
| 2651 obj = receiver->operand(); | |
| 2652 } | |
| 2653 assert(obj->is_valid(), "must be valid"); | |
| 2654 | |
| 2655 if (method()->is_synchronized() && GenerateSynchronizationCode) { | |
| 2656 LIR_Opr lock = new_register(T_INT); | |
| 2657 __ load_stack_address_monitor(0, lock); | |
| 2658 | |
| 8860 | 2659 CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, x->check_flag(Instruction::DeoptimizeOnException)); |
| 0 | 2660 CodeStub* slow_path = new MonitorEnterStub(obj, lock, info); |
| 2661 | |
| 2662 // receiver is guaranteed non-NULL so don't need CodeEmitInfo | |
| 2663 __ lock_object(syncTempOpr(), obj, lock, new_register(T_OBJECT), slow_path, NULL); | |
| 2664 } | |
| 2665 } | |
| 2666 | |
| 2667 // increment invocation counters if needed | |
| 1783 | 2668 if (!method()->is_accessor()) { // Accessors do not have MDOs, so no counting. |
| 8860 | 2669 CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, false); |
| 1783 | 2670 increment_invocation_counter(info); |
| 2671 } | |
| 0 | 2672 |
| 2673 // all blocks with a successor must end with an unconditional jump | |
| 2674 // to the successor even if they are consecutive | |
| 2675 __ jump(x->default_sux()); | |
| 2676 } | |
| 2677 | |
| 2678 | |
| 2679 void LIRGenerator::do_OsrEntry(OsrEntry* x) { | |
| 2680 // construct our frame and model the production of incoming pointer | |
| 2681 // to the OSR buffer. | |
| 2682 __ osr_entry(LIR_Assembler::osrBufferPointer()); | |
| 2683 LIR_Opr result = rlock_result(x); | |
| 2684 __ move(LIR_Assembler::osrBufferPointer(), result); | |
| 2685 } | |
| 2686 | |
| 2687 | |
| 2688 void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) { | |
|
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2689 assert(args->length() == arg_list->length(), |
|
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|
2690 err_msg_res("args=%d, arg_list=%d", args->length(), arg_list->length())); |
|
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2691 for (int i = x->has_receiver() ? 1 : 0; i < args->length(); i++) { |
| 0 | 2692 LIRItem* param = args->at(i); |
| 2693 LIR_Opr loc = arg_list->at(i); | |
| 2694 if (loc->is_register()) { | |
| 2695 param->load_item_force(loc); | |
| 2696 } else { | |
| 2697 LIR_Address* addr = loc->as_address_ptr(); | |
| 2698 param->load_for_store(addr->type()); | |
| 2002 | 2699 if (addr->type() == T_OBJECT) { |
| 2700 __ move_wide(param->result(), addr); | |
| 2701 } else | |
| 2702 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 2703 __ unaligned_move(param->result(), addr); | |
| 2704 } else { | |
| 2705 __ move(param->result(), addr); | |
| 2706 } | |
| 0 | 2707 } |
| 2708 } | |
| 2709 | |
| 2710 if (x->has_receiver()) { | |
| 2711 LIRItem* receiver = args->at(0); | |
| 2712 LIR_Opr loc = arg_list->at(0); | |
| 2713 if (loc->is_register()) { | |
| 2714 receiver->load_item_force(loc); | |
| 2715 } else { | |
| 2716 assert(loc->is_address(), "just checking"); | |
| 2717 receiver->load_for_store(T_OBJECT); | |
| 2002 | 2718 __ move_wide(receiver->result(), loc->as_address_ptr()); |
| 0 | 2719 } |
| 2720 } | |
| 2721 } | |
| 2722 | |
| 2723 | |
| 2724 // Visits all arguments, returns appropriate items without loading them | |
| 2725 LIRItemList* LIRGenerator::invoke_visit_arguments(Invoke* x) { | |
| 2726 LIRItemList* argument_items = new LIRItemList(); | |
| 2727 if (x->has_receiver()) { | |
| 2728 LIRItem* receiver = new LIRItem(x->receiver(), this); | |
| 2729 argument_items->append(receiver); | |
| 2730 } | |
| 2731 for (int i = 0; i < x->number_of_arguments(); i++) { | |
| 2732 LIRItem* param = new LIRItem(x->argument_at(i), this); | |
| 2733 argument_items->append(param); | |
| 2734 } | |
| 2735 return argument_items; | |
| 2736 } | |
| 2737 | |
| 2738 | |
| 2739 // The invoke with receiver has following phases: | |
| 2740 // a) traverse and load/lock receiver; | |
| 2741 // b) traverse all arguments -> item-array (invoke_visit_argument) | |
| 2742 // c) push receiver on stack | |
| 2743 // d) load each of the items and push on stack | |
| 2744 // e) unlock receiver | |
| 2745 // f) move receiver into receiver-register %o0 | |
| 2746 // g) lock result registers and emit call operation | |
| 2747 // | |
| 2748 // Before issuing a call, we must spill-save all values on stack | |
| 2749 // that are in caller-save register. "spill-save" moves thos registers | |
| 2750 // either in a free callee-save register or spills them if no free | |
| 2751 // callee save register is available. | |
| 2752 // | |
| 2753 // The problem is where to invoke spill-save. | |
| 2754 // - if invoked between e) and f), we may lock callee save | |
| 2755 // register in "spill-save" that destroys the receiver register | |
| 2756 // before f) is executed | |
| 2757 // - if we rearange the f) to be earlier, by loading %o0, it | |
| 2758 // may destroy a value on the stack that is currently in %o0 | |
| 2759 // and is waiting to be spilled | |
| 2760 // - if we keep the receiver locked while doing spill-save, | |
| 2761 // we cannot spill it as it is spill-locked | |
| 2762 // | |
| 2763 void LIRGenerator::do_Invoke(Invoke* x) { | |
| 2764 CallingConvention* cc = frame_map()->java_calling_convention(x->signature(), true); | |
| 2765 | |
| 2766 LIR_OprList* arg_list = cc->args(); | |
| 2767 LIRItemList* args = invoke_visit_arguments(x); | |
| 2768 LIR_Opr receiver = LIR_OprFact::illegalOpr; | |
| 2769 | |
| 2770 // setup result register | |
| 2771 LIR_Opr result_register = LIR_OprFact::illegalOpr; | |
| 2772 if (x->type() != voidType) { | |
| 2773 result_register = result_register_for(x->type()); | |
| 2774 } | |
| 2775 | |
| 2776 CodeEmitInfo* info = state_for(x, x->state()); | |
| 2777 | |
| 2778 invoke_load_arguments(x, args, arg_list); | |
| 2779 | |
| 2780 if (x->has_receiver()) { | |
| 2781 args->at(0)->load_item_force(LIR_Assembler::receiverOpr()); | |
| 2782 receiver = args->at(0)->result(); | |
| 2783 } | |
| 2784 | |
| 2785 // emit invoke code | |
| 2786 bool optimized = x->target_is_loaded() && x->target_is_final(); | |
| 2787 assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match"); | |
| 2788 | |
| 1564 | 2789 // JSR 292 |
| 2790 // Preserve the SP over MethodHandle call sites. | |
| 2791 ciMethod* target = x->target(); | |
|
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2792 bool is_method_handle_invoke = (// %%% FIXME: Are both of these relevant? |
|
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2793 target->is_method_handle_intrinsic() || |
|
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|
2794 target->is_compiled_lambda_form()); |
|
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diff
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|
2795 if (is_method_handle_invoke) { |
| 1564 | 2796 info->set_is_method_handle_invoke(true); |
| 2797 __ move(FrameMap::stack_pointer(), FrameMap::method_handle_invoke_SP_save_opr()); | |
| 2798 } | |
| 2799 | |
| 0 | 2800 switch (x->code()) { |
| 2801 case Bytecodes::_invokestatic: | |
| 1564 | 2802 __ call_static(target, result_register, |
| 0 | 2803 SharedRuntime::get_resolve_static_call_stub(), |
| 2804 arg_list, info); | |
| 2805 break; | |
| 2806 case Bytecodes::_invokespecial: | |
| 2807 case Bytecodes::_invokevirtual: | |
| 2808 case Bytecodes::_invokeinterface: | |
| 2809 // for final target we still produce an inline cache, in order | |
| 2810 // to be able to call mixed mode | |
| 2811 if (x->code() == Bytecodes::_invokespecial || optimized) { | |
| 1564 | 2812 __ call_opt_virtual(target, receiver, result_register, |
| 0 | 2813 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
| 2814 arg_list, info); | |
| 2815 } else if (x->vtable_index() < 0) { | |
| 1564 | 2816 __ call_icvirtual(target, receiver, result_register, |
| 0 | 2817 SharedRuntime::get_resolve_virtual_call_stub(), |
| 2818 arg_list, info); | |
| 2819 } else { | |
|
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2820 int entry_offset = InstanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size(); |
| 0 | 2821 int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes(); |
| 1564 | 2822 __ call_virtual(target, receiver, result_register, vtable_offset, arg_list, info); |
| 0 | 2823 } |
| 2824 break; | |
| 1295 | 2825 case Bytecodes::_invokedynamic: { |
| 1564 | 2826 __ call_dynamic(target, receiver, result_register, |
|
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|
2827 SharedRuntime::get_resolve_static_call_stub(), |
| 1295 | 2828 arg_list, info); |
| 2829 break; | |
| 2830 } | |
| 0 | 2831 default: |
|
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6143
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|
2832 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(x->code()))); |
| 0 | 2833 break; |
| 2834 } | |
| 2835 | |
| 1564 | 2836 // JSR 292 |
| 2837 // Restore the SP after MethodHandle call sites. | |
|
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2838 if (is_method_handle_invoke) { |
| 1564 | 2839 __ move(FrameMap::method_handle_invoke_SP_save_opr(), FrameMap::stack_pointer()); |
| 2840 } | |
| 2841 | |
| 0 | 2842 if (x->type()->is_float() || x->type()->is_double()) { |
| 2843 // Force rounding of results from non-strictfp when in strictfp | |
| 2844 // scope (or when we don't know the strictness of the callee, to | |
| 2845 // be safe.) | |
| 2846 if (method()->is_strict()) { | |
| 2847 if (!x->target_is_loaded() || !x->target_is_strictfp()) { | |
| 2848 result_register = round_item(result_register); | |
| 2849 } | |
| 2850 } | |
| 2851 } | |
| 2852 | |
| 2853 if (result_register->is_valid()) { | |
| 2854 LIR_Opr result = rlock_result(x); | |
| 2855 __ move(result_register, result); | |
| 2856 } | |
| 2857 } | |
| 2858 | |
| 2859 | |
| 2860 void LIRGenerator::do_FPIntrinsics(Intrinsic* x) { | |
| 2861 assert(x->number_of_arguments() == 1, "wrong type"); | |
| 2862 LIRItem value (x->argument_at(0), this); | |
| 2863 LIR_Opr reg = rlock_result(x); | |
| 2864 value.load_item(); | |
| 2865 LIR_Opr tmp = force_to_spill(value.result(), as_BasicType(x->type())); | |
| 2866 __ move(tmp, reg); | |
| 2867 } | |
| 2868 | |
| 2869 | |
| 2870 | |
| 2871 // Code for : x->x() {x->cond()} x->y() ? x->tval() : x->fval() | |
| 2872 void LIRGenerator::do_IfOp(IfOp* x) { | |
| 2873 #ifdef ASSERT | |
| 2874 { | |
| 2875 ValueTag xtag = x->x()->type()->tag(); | |
| 2876 ValueTag ttag = x->tval()->type()->tag(); | |
| 2877 assert(xtag == intTag || xtag == objectTag, "cannot handle others"); | |
| 2878 assert(ttag == addressTag || ttag == intTag || ttag == objectTag || ttag == longTag, "cannot handle others"); | |
| 2879 assert(ttag == x->fval()->type()->tag(), "cannot handle others"); | |
| 2880 } | |
| 2881 #endif | |
| 2882 | |
| 2883 LIRItem left(x->x(), this); | |
| 2884 LIRItem right(x->y(), this); | |
| 2885 left.load_item(); | |
| 2886 if (can_inline_as_constant(right.value())) { | |
| 2887 right.dont_load_item(); | |
| 2888 } else { | |
| 2889 right.load_item(); | |
| 2890 } | |
| 2891 | |
| 2892 LIRItem t_val(x->tval(), this); | |
| 2893 LIRItem f_val(x->fval(), this); | |
| 2894 t_val.dont_load_item(); | |
| 2895 f_val.dont_load_item(); | |
| 2896 LIR_Opr reg = rlock_result(x); | |
| 2897 | |
| 2898 __ 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
|
2899 __ cmove(lir_cond(x->cond()), t_val.result(), f_val.result(), reg, as_BasicType(x->x()->type())); |
| 0 | 2900 } |
| 2901 | |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2902 void LIRGenerator::do_RuntimeCall(address routine, int expected_arguments, Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2903 assert(x->number_of_arguments() == expected_arguments, "wrong type"); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2904 LIR_Opr reg = result_register_for(x->type()); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2905 __ call_runtime_leaf(routine, getThreadTemp(), |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2906 reg, new LIR_OprList()); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2907 LIR_Opr result = rlock_result(x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2908 __ move(reg, result); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2909 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2910 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2911 #ifdef TRACE_HAVE_INTRINSICS |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2912 void LIRGenerator::do_ThreadIDIntrinsic(Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2913 LIR_Opr thread = getThreadPointer(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2914 LIR_Opr osthread = new_pointer_register(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2915 __ 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
|
2916 size_t thread_id_size = OSThread::thread_id_size(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2917 if (thread_id_size == (size_t) BytesPerLong) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2918 LIR_Opr id = new_register(T_LONG); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2919 __ 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
|
2920 __ convert(Bytecodes::_l2i, id, rlock_result(x)); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2921 } else if (thread_id_size == (size_t) BytesPerInt) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2922 __ 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
|
2923 } else { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2924 ShouldNotReachHere(); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2925 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2926 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2927 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2928 void LIRGenerator::do_ClassIDIntrinsic(Intrinsic* x) { |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2929 CodeEmitInfo* info = state_for(x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2930 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
|
2931 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
|
2932 assert(info != NULL, "must have info"); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2933 LIRItem arg(x->argument_at(1), this); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2934 arg.load_item(); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
2935 LIR_Opr klass = new_pointer_register(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
2936 __ 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
|
2937 LIR_Opr id = new_register(T_LONG); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2938 ByteSize offset = TRACE_ID_OFFSET; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2939 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
|
2940 __ move(trace_id_addr, id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2941 __ logical_or(id, LIR_OprFact::longConst(0x01l), id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2942 __ store(id, trace_id_addr); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2943 __ logical_and(id, LIR_OprFact::longConst(~0x3l), id); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2944 __ move(id, rlock_result(x)); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2945 } |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2946 #endif |
| 0 | 2947 |
| 2948 void LIRGenerator::do_Intrinsic(Intrinsic* x) { | |
| 2949 switch (x->id()) { | |
| 2950 case vmIntrinsics::_intBitsToFloat : | |
| 2951 case vmIntrinsics::_doubleToRawLongBits : | |
| 2952 case vmIntrinsics::_longBitsToDouble : | |
| 2953 case vmIntrinsics::_floatToRawIntBits : { | |
| 2954 do_FPIntrinsics(x); | |
| 2955 break; | |
| 2956 } | |
| 2957 | |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2958 #ifdef TRACE_HAVE_INTRINSICS |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2959 case vmIntrinsics::_threadID: do_ThreadIDIntrinsic(x); break; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2960 case vmIntrinsics::_classID: do_ClassIDIntrinsic(x); break; |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2961 case vmIntrinsics::_counterTime: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2962 do_RuntimeCall(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), 0, x); |
| 0 | 2963 break; |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2964 #endif |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2965 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2966 case vmIntrinsics::_currentTimeMillis: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2967 do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeMillis), 0, x); |
| 0 | 2968 break; |
|
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2969 |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2970 case vmIntrinsics::_nanoTime: |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2971 do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeNanos), 0, x); |
|
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
4966
diff
changeset
|
2972 break; |
| 0 | 2973 |
| 2974 case vmIntrinsics::_Object_init: do_RegisterFinalizer(x); break; | |
| 6135 | 2975 case vmIntrinsics::_isInstance: do_isInstance(x); break; |
| 0 | 2976 case vmIntrinsics::_getClass: do_getClass(x); break; |
| 2977 case vmIntrinsics::_currentThread: do_currentThread(x); break; | |
| 2978 | |
| 2979 case vmIntrinsics::_dlog: // fall through | |
| 2980 case vmIntrinsics::_dlog10: // fall through | |
| 2981 case vmIntrinsics::_dabs: // fall through | |
| 2982 case vmIntrinsics::_dsqrt: // fall through | |
| 2983 case vmIntrinsics::_dtan: // fall through | |
| 2984 case vmIntrinsics::_dsin : // fall through | |
|
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
2985 case vmIntrinsics::_dcos : // fall through |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
2986 case vmIntrinsics::_dexp : // fall through |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
6006
diff
changeset
|
2987 case vmIntrinsics::_dpow : do_MathIntrinsic(x); break; |
| 0 | 2988 case vmIntrinsics::_arraycopy: do_ArrayCopy(x); break; |
| 2989 | |
| 2990 // java.nio.Buffer.checkIndex | |
| 2991 case vmIntrinsics::_checkIndex: do_NIOCheckIndex(x); break; | |
| 2992 | |
| 2993 case vmIntrinsics::_compareAndSwapObject: | |
| 2994 do_CompareAndSwap(x, objectType); | |
| 2995 break; | |
| 2996 case vmIntrinsics::_compareAndSwapInt: | |
| 2997 do_CompareAndSwap(x, intType); | |
| 2998 break; | |
| 2999 case vmIntrinsics::_compareAndSwapLong: | |
| 3000 do_CompareAndSwap(x, longType); | |
| 3001 break; | |
| 3002 | |
| 7425 | 3003 case vmIntrinsics::_loadFence : |
| 3004 if (os::is_MP()) __ membar_acquire(); | |
| 3005 break; | |
| 3006 case vmIntrinsics::_storeFence: | |
| 3007 if (os::is_MP()) __ membar_release(); | |
| 3008 break; | |
| 3009 case vmIntrinsics::_fullFence : | |
| 3010 if (os::is_MP()) __ membar(); | |
| 3011 break; | |
| 3012 | |
|
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3013 case vmIntrinsics::_Reference_get: |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3014 do_Reference_get(x); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3015 break; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2357
diff
changeset
|
3016 |
| 0 | 3017 default: ShouldNotReachHere(); break; |
| 3018 } | |
| 3019 } | |
| 3020 | |
| 3021 void LIRGenerator::do_ProfileCall(ProfileCall* x) { | |
| 3022 // Need recv in a temporary register so it interferes with the other temporaries | |
| 3023 LIR_Opr recv = LIR_OprFact::illegalOpr; | |
| 3024 LIR_Opr mdo = new_register(T_OBJECT); | |
| 1783 | 3025 // tmp is used to hold the counters on SPARC |
| 3026 LIR_Opr tmp = new_pointer_register(); | |
| 0 | 3027 if (x->recv() != NULL) { |
| 3028 LIRItem value(x->recv(), this); | |
| 3029 value.load_item(); | |
| 3030 recv = new_register(T_OBJECT); | |
| 3031 __ move(value.result(), recv); | |
| 3032 } | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6145
diff
changeset
|
3033 __ profile_call(x->method(), x->bci_of_invoke(), x->callee(), mdo, recv, tmp, x->known_holder()); |
| 0 | 3034 } |
| 3035 | |
| 1783 | 3036 void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) { |
| 3037 // We can safely ignore accessors here, since c2 will inline them anyway, | |
| 3038 // accessors are also always mature. | |
| 3039 if (!x->inlinee()->is_accessor()) { | |
| 3040 CodeEmitInfo* info = state_for(x, x->state(), true); | |
|
3964
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3756
diff
changeset
|
3041 // 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
|
3042 increment_event_counter_impl(info, x->inlinee(), (1 << Tier23InlineeNotifyFreqLog) - 1, InvocationEntryBci, false, true); |
| 1783 | 3043 } |
| 3044 } | |
| 3045 | |
| 3046 void LIRGenerator::increment_event_counter(CodeEmitInfo* info, int bci, bool backedge) { | |
| 3047 int freq_log; | |
| 3048 int level = compilation()->env()->comp_level(); | |
| 3049 if (level == CompLevel_limited_profile) { | |
| 3050 freq_log = (backedge ? Tier2BackedgeNotifyFreqLog : Tier2InvokeNotifyFreqLog); | |
| 3051 } else if (level == CompLevel_full_profile) { | |
| 3052 freq_log = (backedge ? Tier3BackedgeNotifyFreqLog : Tier3InvokeNotifyFreqLog); | |
| 3053 } else { | |
| 3054 ShouldNotReachHere(); | |
| 3055 } | |
| 3056 // Increment the appropriate invocation/backedge counter and notify the runtime. | |
| 3057 increment_event_counter_impl(info, info->scope()->method(), (1 << freq_log) - 1, bci, backedge, true); | |
| 0 | 3058 } |
| 3059 | |
| 1783 | 3060 void LIRGenerator::increment_event_counter_impl(CodeEmitInfo* info, |
| 3061 ciMethod *method, int frequency, | |
| 3062 int bci, bool backedge, bool notify) { | |
| 3063 assert(frequency == 0 || is_power_of_2(frequency + 1), "Frequency must be x^2 - 1 or 0"); | |
| 3064 int level = _compilation->env()->comp_level(); | |
| 3065 assert(level > CompLevel_simple, "Shouldn't be here"); | |
| 3066 | |
| 3067 int offset = -1; | |
|
6739
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3068 LIR_Opr counter_holder = new_register(T_METADATA); |
| 1783 | 3069 LIR_Opr meth; |
| 3070 if (level == CompLevel_limited_profile) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3071 offset = in_bytes(backedge ? Method::backedge_counter_offset() : |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3072 Method::invocation_counter_offset()); |
|
6739
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3073 __ metadata2reg(method->constant_encoding(), counter_holder); |
| 1783 | 3074 meth = counter_holder; |
| 3075 } else if (level == CompLevel_full_profile) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3076 offset = in_bytes(backedge ? MethodData::backedge_counter_offset() : |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6616
diff
changeset
|
3077 MethodData::invocation_counter_offset()); |
|
2007
5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
iveresov
parents:
2002
diff
changeset
|
3078 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
|
3079 assert(md != NULL, "Sanity"); |
|
6739
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3080 __ metadata2reg(md->constant_encoding(), counter_holder); |
|
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3081 meth = new_register(T_METADATA); |
|
8a02ca5e5576
7195816: NPG: Crash in c1_ValueType - ShouldNotReachHere
roland
parents:
6731
diff
changeset
|
3082 __ metadata2reg(method->constant_encoding(), meth); |
| 1783 | 3083 } else { |
| 3084 ShouldNotReachHere(); | |
| 3085 } | |
| 3086 LIR_Address* counter = new LIR_Address(counter_holder, offset, T_INT); | |
| 3087 LIR_Opr result = new_register(T_INT); | |
| 3088 __ load(counter, result); | |
| 3089 __ add(result, LIR_OprFact::intConst(InvocationCounter::count_increment), result); | |
| 3090 __ store(result, counter); | |
| 3091 if (notify) { | |
| 3092 LIR_Opr mask = load_immediate(frequency << InvocationCounter::count_shift, T_INT); | |
| 3093 __ logical_and(result, mask, result); | |
| 3094 __ cmp(lir_cond_equal, result, LIR_OprFact::intConst(0)); | |
| 3095 // The bci for info can point to cmp for if's we want the if bci | |
| 3096 CodeStub* overflow = new CounterOverflowStub(info, bci, meth); | |
| 3097 __ branch(lir_cond_equal, T_INT, overflow); | |
| 3098 __ branch_destination(overflow->continuation()); | |
| 3099 } | |
| 3100 } | |
| 0 | 3101 |
|
2166
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3102 void LIRGenerator::do_RuntimeCall(RuntimeCall* x) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3103 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
|
3104 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
|
3105 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3106 if (x->pass_thread()) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3107 signature->append(T_ADDRESS); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3108 args->append(getThreadPointer()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3109 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3110 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3111 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
|
3112 Value a = x->argument_at(i); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3113 LIRItem* item = new LIRItem(a, this); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3114 item->load_item(); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3115 args->append(item->result()); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3116 signature->append(as_BasicType(a->type())); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3117 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3118 |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3119 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
|
3120 if (x->type() == voidType) { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3121 set_no_result(x); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3122 } else { |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3123 __ move(result, rlock_result(x)); |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3124 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2089
diff
changeset
|
3125 } |
|
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
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diff
changeset
|
3126 |
| 8860 | 3127 void LIRGenerator::do_Assert(Assert *x) { |
| 3128 #ifdef ASSERT | |
| 3129 ValueTag tag = x->x()->type()->tag(); | |
| 3130 If::Condition cond = x->cond(); | |
| 3131 | |
| 3132 LIRItem xitem(x->x(), this); | |
| 3133 LIRItem yitem(x->y(), this); | |
| 3134 LIRItem* xin = &xitem; | |
| 3135 LIRItem* yin = &yitem; | |
| 3136 | |
| 3137 assert(tag == intTag, "Only integer assertions are valid!"); | |
| 3138 | |
| 3139 xin->load_item(); | |
| 3140 yin->dont_load_item(); | |
| 3141 | |
| 3142 set_no_result(x); | |
| 3143 | |
| 3144 LIR_Opr left = xin->result(); | |
| 3145 LIR_Opr right = yin->result(); | |
| 3146 | |
| 3147 __ lir_assert(lir_cond(x->cond()), left, right, x->message(), true); | |
| 3148 #endif | |
| 3149 } | |
| 3150 | |
| 3151 | |
| 3152 void LIRGenerator::do_RangeCheckPredicate(RangeCheckPredicate *x) { | |
| 3153 | |
| 3154 | |
| 3155 Instruction *a = x->x(); | |
| 3156 Instruction *b = x->y(); | |
| 3157 if (!a || StressRangeCheckElimination) { | |
| 3158 assert(!b || StressRangeCheckElimination, "B must also be null"); | |
| 3159 | |
| 3160 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3161 CodeStub* stub = new PredicateFailedStub(info); | |
| 3162 | |
| 3163 __ jump(stub); | |
| 3164 } else if (a->type()->as_IntConstant() && b->type()->as_IntConstant()) { | |
| 3165 int a_int = a->type()->as_IntConstant()->value(); | |
| 3166 int b_int = b->type()->as_IntConstant()->value(); | |
| 3167 | |
| 3168 bool ok = false; | |
| 3169 | |
| 3170 switch(x->cond()) { | |
| 3171 case Instruction::eql: ok = (a_int == b_int); break; | |
| 3172 case Instruction::neq: ok = (a_int != b_int); break; | |
| 3173 case Instruction::lss: ok = (a_int < b_int); break; | |
| 3174 case Instruction::leq: ok = (a_int <= b_int); break; | |
| 3175 case Instruction::gtr: ok = (a_int > b_int); break; | |
| 3176 case Instruction::geq: ok = (a_int >= b_int); break; | |
| 3177 case Instruction::aeq: ok = ((unsigned int)a_int >= (unsigned int)b_int); break; | |
| 3178 case Instruction::beq: ok = ((unsigned int)a_int <= (unsigned int)b_int); break; | |
| 3179 default: ShouldNotReachHere(); | |
| 3180 } | |
| 3181 | |
| 3182 if (ok) { | |
| 3183 | |
| 3184 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3185 CodeStub* stub = new PredicateFailedStub(info); | |
| 3186 | |
| 3187 __ jump(stub); | |
| 3188 } | |
| 3189 } else { | |
| 3190 | |
| 3191 ValueTag tag = x->x()->type()->tag(); | |
| 3192 If::Condition cond = x->cond(); | |
| 3193 LIRItem xitem(x->x(), this); | |
| 3194 LIRItem yitem(x->y(), this); | |
| 3195 LIRItem* xin = &xitem; | |
| 3196 LIRItem* yin = &yitem; | |
| 3197 | |
| 3198 assert(tag == intTag, "Only integer deoptimizations are valid!"); | |
| 3199 | |
| 3200 xin->load_item(); | |
| 3201 yin->dont_load_item(); | |
| 3202 set_no_result(x); | |
| 3203 | |
| 3204 LIR_Opr left = xin->result(); | |
| 3205 LIR_Opr right = yin->result(); | |
| 3206 | |
| 3207 CodeEmitInfo *info = state_for(x, x->state()); | |
| 3208 CodeStub* stub = new PredicateFailedStub(info); | |
| 3209 | |
| 3210 __ cmp(lir_cond(cond), left, right); | |
| 3211 __ branch(lir_cond(cond), right->type(), stub); | |
| 3212 } | |
| 3213 } | |
| 3214 | |
| 3215 | |
| 0 | 3216 LIR_Opr LIRGenerator::call_runtime(Value arg1, address entry, ValueType* result_type, CodeEmitInfo* info) { |
| 3217 LIRItemList args(1); | |
| 3218 LIRItem value(arg1, this); | |
| 3219 args.append(&value); | |
| 3220 BasicTypeList signature; | |
| 3221 signature.append(as_BasicType(arg1->type())); | |
| 3222 | |
| 3223 return call_runtime(&signature, &args, entry, result_type, info); | |
| 3224 } | |
| 3225 | |
| 3226 | |
| 3227 LIR_Opr LIRGenerator::call_runtime(Value arg1, Value arg2, address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3228 LIRItemList args(2); | |
| 3229 LIRItem value1(arg1, this); | |
| 3230 LIRItem value2(arg2, this); | |
| 3231 args.append(&value1); | |
| 3232 args.append(&value2); | |
| 3233 BasicTypeList signature; | |
| 3234 signature.append(as_BasicType(arg1->type())); | |
| 3235 signature.append(as_BasicType(arg2->type())); | |
| 3236 | |
| 3237 return call_runtime(&signature, &args, entry, result_type, info); | |
| 3238 } | |
| 3239 | |
| 3240 | |
| 3241 LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIR_OprList* args, | |
| 3242 address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3243 // get a result register | |
| 3244 LIR_Opr phys_reg = LIR_OprFact::illegalOpr; | |
| 3245 LIR_Opr result = LIR_OprFact::illegalOpr; | |
| 3246 if (result_type->tag() != voidTag) { | |
| 3247 result = new_register(result_type); | |
| 3248 phys_reg = result_register_for(result_type); | |
| 3249 } | |
| 3250 | |
| 3251 // move the arguments into the correct location | |
| 3252 CallingConvention* cc = frame_map()->c_calling_convention(signature); | |
| 3253 assert(cc->length() == args->length(), "argument mismatch"); | |
| 3254 for (int i = 0; i < args->length(); i++) { | |
| 3255 LIR_Opr arg = args->at(i); | |
| 3256 LIR_Opr loc = cc->at(i); | |
| 3257 if (loc->is_register()) { | |
| 3258 __ move(arg, loc); | |
| 3259 } else { | |
| 3260 LIR_Address* addr = loc->as_address_ptr(); | |
| 3261 // if (!can_store_as_constant(arg)) { | |
| 3262 // LIR_Opr tmp = new_register(arg->type()); | |
| 3263 // __ move(arg, tmp); | |
| 3264 // arg = tmp; | |
| 3265 // } | |
| 3266 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 3267 __ unaligned_move(arg, addr); | |
| 3268 } else { | |
| 3269 __ move(arg, addr); | |
| 3270 } | |
| 3271 } | |
| 3272 } | |
| 3273 | |
| 3274 if (info) { | |
| 3275 __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); | |
| 3276 } else { | |
| 3277 __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); | |
| 3278 } | |
| 3279 if (result->is_valid()) { | |
| 3280 __ move(phys_reg, result); | |
| 3281 } | |
| 3282 return result; | |
| 3283 } | |
| 3284 | |
| 3285 | |
| 3286 LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIRItemList* args, | |
| 3287 address entry, ValueType* result_type, CodeEmitInfo* info) { | |
| 3288 // get a result register | |
| 3289 LIR_Opr phys_reg = LIR_OprFact::illegalOpr; | |
| 3290 LIR_Opr result = LIR_OprFact::illegalOpr; | |
| 3291 if (result_type->tag() != voidTag) { | |
| 3292 result = new_register(result_type); | |
| 3293 phys_reg = result_register_for(result_type); | |
| 3294 } | |
| 3295 | |
| 3296 // move the arguments into the correct location | |
| 3297 CallingConvention* cc = frame_map()->c_calling_convention(signature); | |
| 3298 | |
| 3299 assert(cc->length() == args->length(), "argument mismatch"); | |
| 3300 for (int i = 0; i < args->length(); i++) { | |
| 3301 LIRItem* arg = args->at(i); | |
| 3302 LIR_Opr loc = cc->at(i); | |
| 3303 if (loc->is_register()) { | |
| 3304 arg->load_item_force(loc); | |
| 3305 } else { | |
| 3306 LIR_Address* addr = loc->as_address_ptr(); | |
| 3307 arg->load_for_store(addr->type()); | |
| 3308 if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { | |
| 3309 __ unaligned_move(arg->result(), addr); | |
| 3310 } else { | |
| 3311 __ move(arg->result(), addr); | |
| 3312 } | |
| 3313 } | |
| 3314 } | |
| 3315 | |
| 3316 if (info) { | |
| 3317 __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); | |
| 3318 } else { | |
| 3319 __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); | |
| 3320 } | |
| 3321 if (result->is_valid()) { | |
| 3322 __ move(phys_reg, result); | |
| 3323 } | |
| 3324 return result; | |
| 3325 } | |
|
4966
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3326 |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3327 void LIRGenerator::do_MemBar(MemBar* x) { |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3328 if (os::is_MP()) { |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3329 LIR_Code code = x->code(); |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3330 switch(code) { |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3331 case lir_membar_acquire : __ membar_acquire(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3332 case lir_membar_release : __ membar_release(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3333 case lir_membar : __ membar(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3334 case lir_membar_loadload : __ membar_loadload(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3335 case lir_membar_storestore: __ membar_storestore(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3336 case lir_membar_loadstore : __ membar_loadstore(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3337 case lir_membar_storeload : __ membar_storeload(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3338 default : ShouldNotReachHere(); break; |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3339 } |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3340 } |
|
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4816
diff
changeset
|
3341 } |