Tue, 15 Sep 2009 21:53:47 -0700
6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
duke@435 | 1 | /* |
xdono@1014 | 2 | * Copyright 2005-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_c1_LIRGenerator.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | #ifdef ASSERT |
duke@435 | 29 | #define __ gen()->lir(__FILE__, __LINE__)-> |
duke@435 | 30 | #else |
duke@435 | 31 | #define __ gen()->lir()-> |
duke@435 | 32 | #endif |
duke@435 | 33 | |
duke@435 | 34 | |
duke@435 | 35 | void PhiResolverState::reset(int max_vregs) { |
duke@435 | 36 | // Initialize array sizes |
duke@435 | 37 | _virtual_operands.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 38 | _virtual_operands.trunc_to(0); |
duke@435 | 39 | _other_operands.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 40 | _other_operands.trunc_to(0); |
duke@435 | 41 | _vreg_table.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 42 | _vreg_table.trunc_to(0); |
duke@435 | 43 | } |
duke@435 | 44 | |
duke@435 | 45 | |
duke@435 | 46 | |
duke@435 | 47 | //-------------------------------------------------------------- |
duke@435 | 48 | // PhiResolver |
duke@435 | 49 | |
duke@435 | 50 | // Resolves cycles: |
duke@435 | 51 | // |
duke@435 | 52 | // r1 := r2 becomes temp := r1 |
duke@435 | 53 | // r2 := r1 r1 := r2 |
duke@435 | 54 | // r2 := temp |
duke@435 | 55 | // and orders moves: |
duke@435 | 56 | // |
duke@435 | 57 | // r2 := r3 becomes r1 := r2 |
duke@435 | 58 | // r1 := r2 r2 := r3 |
duke@435 | 59 | |
duke@435 | 60 | PhiResolver::PhiResolver(LIRGenerator* gen, int max_vregs) |
duke@435 | 61 | : _gen(gen) |
duke@435 | 62 | , _state(gen->resolver_state()) |
duke@435 | 63 | , _temp(LIR_OprFact::illegalOpr) |
duke@435 | 64 | { |
duke@435 | 65 | // reinitialize the shared state arrays |
duke@435 | 66 | _state.reset(max_vregs); |
duke@435 | 67 | } |
duke@435 | 68 | |
duke@435 | 69 | |
duke@435 | 70 | void PhiResolver::emit_move(LIR_Opr src, LIR_Opr dest) { |
duke@435 | 71 | assert(src->is_valid(), ""); |
duke@435 | 72 | assert(dest->is_valid(), ""); |
duke@435 | 73 | __ move(src, dest); |
duke@435 | 74 | } |
duke@435 | 75 | |
duke@435 | 76 | |
duke@435 | 77 | void PhiResolver::move_temp_to(LIR_Opr dest) { |
duke@435 | 78 | assert(_temp->is_valid(), ""); |
duke@435 | 79 | emit_move(_temp, dest); |
duke@435 | 80 | NOT_PRODUCT(_temp = LIR_OprFact::illegalOpr); |
duke@435 | 81 | } |
duke@435 | 82 | |
duke@435 | 83 | |
duke@435 | 84 | void PhiResolver::move_to_temp(LIR_Opr src) { |
duke@435 | 85 | assert(_temp->is_illegal(), ""); |
duke@435 | 86 | _temp = _gen->new_register(src->type()); |
duke@435 | 87 | emit_move(src, _temp); |
duke@435 | 88 | } |
duke@435 | 89 | |
duke@435 | 90 | |
duke@435 | 91 | // Traverse assignment graph in depth first order and generate moves in post order |
duke@435 | 92 | // ie. two assignments: b := c, a := b start with node c: |
duke@435 | 93 | // Call graph: move(NULL, c) -> move(c, b) -> move(b, a) |
duke@435 | 94 | // Generates moves in this order: move b to a and move c to b |
duke@435 | 95 | // ie. cycle a := b, b := a start with node a |
duke@435 | 96 | // Call graph: move(NULL, a) -> move(a, b) -> move(b, a) |
duke@435 | 97 | // Generates moves in this order: move b to temp, move a to b, move temp to a |
duke@435 | 98 | void PhiResolver::move(ResolveNode* src, ResolveNode* dest) { |
duke@435 | 99 | if (!dest->visited()) { |
duke@435 | 100 | dest->set_visited(); |
duke@435 | 101 | for (int i = dest->no_of_destinations()-1; i >= 0; i --) { |
duke@435 | 102 | move(dest, dest->destination_at(i)); |
duke@435 | 103 | } |
duke@435 | 104 | } else if (!dest->start_node()) { |
duke@435 | 105 | // cylce in graph detected |
duke@435 | 106 | assert(_loop == NULL, "only one loop valid!"); |
duke@435 | 107 | _loop = dest; |
duke@435 | 108 | move_to_temp(src->operand()); |
duke@435 | 109 | return; |
duke@435 | 110 | } // else dest is a start node |
duke@435 | 111 | |
duke@435 | 112 | if (!dest->assigned()) { |
duke@435 | 113 | if (_loop == dest) { |
duke@435 | 114 | move_temp_to(dest->operand()); |
duke@435 | 115 | dest->set_assigned(); |
duke@435 | 116 | } else if (src != NULL) { |
duke@435 | 117 | emit_move(src->operand(), dest->operand()); |
duke@435 | 118 | dest->set_assigned(); |
duke@435 | 119 | } |
duke@435 | 120 | } |
duke@435 | 121 | } |
duke@435 | 122 | |
duke@435 | 123 | |
duke@435 | 124 | PhiResolver::~PhiResolver() { |
duke@435 | 125 | int i; |
duke@435 | 126 | // resolve any cycles in moves from and to virtual registers |
duke@435 | 127 | for (i = virtual_operands().length() - 1; i >= 0; i --) { |
duke@435 | 128 | ResolveNode* node = virtual_operands()[i]; |
duke@435 | 129 | if (!node->visited()) { |
duke@435 | 130 | _loop = NULL; |
duke@435 | 131 | move(NULL, node); |
duke@435 | 132 | node->set_start_node(); |
duke@435 | 133 | assert(_temp->is_illegal(), "move_temp_to() call missing"); |
duke@435 | 134 | } |
duke@435 | 135 | } |
duke@435 | 136 | |
duke@435 | 137 | // generate move for move from non virtual register to abitrary destination |
duke@435 | 138 | for (i = other_operands().length() - 1; i >= 0; i --) { |
duke@435 | 139 | ResolveNode* node = other_operands()[i]; |
duke@435 | 140 | for (int j = node->no_of_destinations() - 1; j >= 0; j --) { |
duke@435 | 141 | emit_move(node->operand(), node->destination_at(j)->operand()); |
duke@435 | 142 | } |
duke@435 | 143 | } |
duke@435 | 144 | } |
duke@435 | 145 | |
duke@435 | 146 | |
duke@435 | 147 | ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) { |
duke@435 | 148 | ResolveNode* node; |
duke@435 | 149 | if (opr->is_virtual()) { |
duke@435 | 150 | int vreg_num = opr->vreg_number(); |
duke@435 | 151 | node = vreg_table().at_grow(vreg_num, NULL); |
duke@435 | 152 | assert(node == NULL || node->operand() == opr, ""); |
duke@435 | 153 | if (node == NULL) { |
duke@435 | 154 | node = new ResolveNode(opr); |
duke@435 | 155 | vreg_table()[vreg_num] = node; |
duke@435 | 156 | } |
duke@435 | 157 | // Make sure that all virtual operands show up in the list when |
duke@435 | 158 | // they are used as the source of a move. |
duke@435 | 159 | if (source && !virtual_operands().contains(node)) { |
duke@435 | 160 | virtual_operands().append(node); |
duke@435 | 161 | } |
duke@435 | 162 | } else { |
duke@435 | 163 | assert(source, ""); |
duke@435 | 164 | node = new ResolveNode(opr); |
duke@435 | 165 | other_operands().append(node); |
duke@435 | 166 | } |
duke@435 | 167 | return node; |
duke@435 | 168 | } |
duke@435 | 169 | |
duke@435 | 170 | |
duke@435 | 171 | void PhiResolver::move(LIR_Opr src, LIR_Opr dest) { |
duke@435 | 172 | assert(dest->is_virtual(), ""); |
duke@435 | 173 | // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr(); |
duke@435 | 174 | assert(src->is_valid(), ""); |
duke@435 | 175 | assert(dest->is_valid(), ""); |
duke@435 | 176 | ResolveNode* source = source_node(src); |
duke@435 | 177 | source->append(destination_node(dest)); |
duke@435 | 178 | } |
duke@435 | 179 | |
duke@435 | 180 | |
duke@435 | 181 | //-------------------------------------------------------------- |
duke@435 | 182 | // LIRItem |
duke@435 | 183 | |
duke@435 | 184 | void LIRItem::set_result(LIR_Opr opr) { |
duke@435 | 185 | assert(value()->operand()->is_illegal() || value()->operand()->is_constant(), "operand should never change"); |
duke@435 | 186 | value()->set_operand(opr); |
duke@435 | 187 | |
duke@435 | 188 | if (opr->is_virtual()) { |
duke@435 | 189 | _gen->_instruction_for_operand.at_put_grow(opr->vreg_number(), value(), NULL); |
duke@435 | 190 | } |
duke@435 | 191 | |
duke@435 | 192 | _result = opr; |
duke@435 | 193 | } |
duke@435 | 194 | |
duke@435 | 195 | void LIRItem::load_item() { |
duke@435 | 196 | if (result()->is_illegal()) { |
duke@435 | 197 | // update the items result |
duke@435 | 198 | _result = value()->operand(); |
duke@435 | 199 | } |
duke@435 | 200 | if (!result()->is_register()) { |
duke@435 | 201 | LIR_Opr reg = _gen->new_register(value()->type()); |
duke@435 | 202 | __ move(result(), reg); |
duke@435 | 203 | if (result()->is_constant()) { |
duke@435 | 204 | _result = reg; |
duke@435 | 205 | } else { |
duke@435 | 206 | set_result(reg); |
duke@435 | 207 | } |
duke@435 | 208 | } |
duke@435 | 209 | } |
duke@435 | 210 | |
duke@435 | 211 | |
duke@435 | 212 | void LIRItem::load_for_store(BasicType type) { |
duke@435 | 213 | if (_gen->can_store_as_constant(value(), type)) { |
duke@435 | 214 | _result = value()->operand(); |
duke@435 | 215 | if (!_result->is_constant()) { |
duke@435 | 216 | _result = LIR_OprFact::value_type(value()->type()); |
duke@435 | 217 | } |
duke@435 | 218 | } else if (type == T_BYTE || type == T_BOOLEAN) { |
duke@435 | 219 | load_byte_item(); |
duke@435 | 220 | } else { |
duke@435 | 221 | load_item(); |
duke@435 | 222 | } |
duke@435 | 223 | } |
duke@435 | 224 | |
duke@435 | 225 | void LIRItem::load_item_force(LIR_Opr reg) { |
duke@435 | 226 | LIR_Opr r = result(); |
duke@435 | 227 | if (r != reg) { |
duke@435 | 228 | if (r->type() != reg->type()) { |
duke@435 | 229 | // moves between different types need an intervening spill slot |
duke@435 | 230 | LIR_Opr tmp = _gen->force_to_spill(r, reg->type()); |
duke@435 | 231 | __ move(tmp, reg); |
duke@435 | 232 | } else { |
duke@435 | 233 | __ move(r, reg); |
duke@435 | 234 | } |
duke@435 | 235 | _result = reg; |
duke@435 | 236 | } |
duke@435 | 237 | } |
duke@435 | 238 | |
duke@435 | 239 | ciObject* LIRItem::get_jobject_constant() const { |
duke@435 | 240 | ObjectType* oc = type()->as_ObjectType(); |
duke@435 | 241 | if (oc) { |
duke@435 | 242 | return oc->constant_value(); |
duke@435 | 243 | } |
duke@435 | 244 | return NULL; |
duke@435 | 245 | } |
duke@435 | 246 | |
duke@435 | 247 | |
duke@435 | 248 | jint LIRItem::get_jint_constant() const { |
duke@435 | 249 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 250 | assert(type()->as_IntConstant() != NULL, "type check"); |
duke@435 | 251 | return type()->as_IntConstant()->value(); |
duke@435 | 252 | } |
duke@435 | 253 | |
duke@435 | 254 | |
duke@435 | 255 | jint LIRItem::get_address_constant() const { |
duke@435 | 256 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 257 | assert(type()->as_AddressConstant() != NULL, "type check"); |
duke@435 | 258 | return type()->as_AddressConstant()->value(); |
duke@435 | 259 | } |
duke@435 | 260 | |
duke@435 | 261 | |
duke@435 | 262 | jfloat LIRItem::get_jfloat_constant() const { |
duke@435 | 263 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 264 | assert(type()->as_FloatConstant() != NULL, "type check"); |
duke@435 | 265 | return type()->as_FloatConstant()->value(); |
duke@435 | 266 | } |
duke@435 | 267 | |
duke@435 | 268 | |
duke@435 | 269 | jdouble LIRItem::get_jdouble_constant() const { |
duke@435 | 270 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 271 | assert(type()->as_DoubleConstant() != NULL, "type check"); |
duke@435 | 272 | return type()->as_DoubleConstant()->value(); |
duke@435 | 273 | } |
duke@435 | 274 | |
duke@435 | 275 | |
duke@435 | 276 | jlong LIRItem::get_jlong_constant() const { |
duke@435 | 277 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 278 | assert(type()->as_LongConstant() != NULL, "type check"); |
duke@435 | 279 | return type()->as_LongConstant()->value(); |
duke@435 | 280 | } |
duke@435 | 281 | |
duke@435 | 282 | |
duke@435 | 283 | |
duke@435 | 284 | //-------------------------------------------------------------- |
duke@435 | 285 | |
duke@435 | 286 | |
duke@435 | 287 | void LIRGenerator::init() { |
ysr@777 | 288 | _bs = Universe::heap()->barrier_set(); |
duke@435 | 289 | } |
duke@435 | 290 | |
duke@435 | 291 | |
duke@435 | 292 | void LIRGenerator::block_do_prolog(BlockBegin* block) { |
duke@435 | 293 | #ifndef PRODUCT |
duke@435 | 294 | if (PrintIRWithLIR) { |
duke@435 | 295 | block->print(); |
duke@435 | 296 | } |
duke@435 | 297 | #endif |
duke@435 | 298 | |
duke@435 | 299 | // set up the list of LIR instructions |
duke@435 | 300 | assert(block->lir() == NULL, "LIR list already computed for this block"); |
duke@435 | 301 | _lir = new LIR_List(compilation(), block); |
duke@435 | 302 | block->set_lir(_lir); |
duke@435 | 303 | |
duke@435 | 304 | __ branch_destination(block->label()); |
duke@435 | 305 | |
duke@435 | 306 | if (LIRTraceExecution && |
duke@435 | 307 | Compilation::current_compilation()->hir()->start()->block_id() != block->block_id() && |
duke@435 | 308 | !block->is_set(BlockBegin::exception_entry_flag)) { |
duke@435 | 309 | assert(block->lir()->instructions_list()->length() == 1, "should come right after br_dst"); |
duke@435 | 310 | trace_block_entry(block); |
duke@435 | 311 | } |
duke@435 | 312 | } |
duke@435 | 313 | |
duke@435 | 314 | |
duke@435 | 315 | void LIRGenerator::block_do_epilog(BlockBegin* block) { |
duke@435 | 316 | #ifndef PRODUCT |
duke@435 | 317 | if (PrintIRWithLIR) { |
duke@435 | 318 | tty->cr(); |
duke@435 | 319 | } |
duke@435 | 320 | #endif |
duke@435 | 321 | |
duke@435 | 322 | // LIR_Opr for unpinned constants shouldn't be referenced by other |
duke@435 | 323 | // blocks so clear them out after processing the block. |
duke@435 | 324 | for (int i = 0; i < _unpinned_constants.length(); i++) { |
duke@435 | 325 | _unpinned_constants.at(i)->clear_operand(); |
duke@435 | 326 | } |
duke@435 | 327 | _unpinned_constants.trunc_to(0); |
duke@435 | 328 | |
duke@435 | 329 | // clear our any registers for other local constants |
duke@435 | 330 | _constants.trunc_to(0); |
duke@435 | 331 | _reg_for_constants.trunc_to(0); |
duke@435 | 332 | } |
duke@435 | 333 | |
duke@435 | 334 | |
duke@435 | 335 | void LIRGenerator::block_do(BlockBegin* block) { |
duke@435 | 336 | CHECK_BAILOUT(); |
duke@435 | 337 | |
duke@435 | 338 | block_do_prolog(block); |
duke@435 | 339 | set_block(block); |
duke@435 | 340 | |
duke@435 | 341 | for (Instruction* instr = block; instr != NULL; instr = instr->next()) { |
duke@435 | 342 | if (instr->is_pinned()) do_root(instr); |
duke@435 | 343 | } |
duke@435 | 344 | |
duke@435 | 345 | set_block(NULL); |
duke@435 | 346 | block_do_epilog(block); |
duke@435 | 347 | } |
duke@435 | 348 | |
duke@435 | 349 | |
duke@435 | 350 | //-------------------------LIRGenerator----------------------------- |
duke@435 | 351 | |
duke@435 | 352 | // This is where the tree-walk starts; instr must be root; |
duke@435 | 353 | void LIRGenerator::do_root(Value instr) { |
duke@435 | 354 | CHECK_BAILOUT(); |
duke@435 | 355 | |
duke@435 | 356 | InstructionMark im(compilation(), instr); |
duke@435 | 357 | |
duke@435 | 358 | assert(instr->is_pinned(), "use only with roots"); |
duke@435 | 359 | assert(instr->subst() == instr, "shouldn't have missed substitution"); |
duke@435 | 360 | |
duke@435 | 361 | instr->visit(this); |
duke@435 | 362 | |
duke@435 | 363 | assert(!instr->has_uses() || instr->operand()->is_valid() || |
duke@435 | 364 | instr->as_Constant() != NULL || bailed_out(), "invalid item set"); |
duke@435 | 365 | } |
duke@435 | 366 | |
duke@435 | 367 | |
duke@435 | 368 | // This is called for each node in tree; the walk stops if a root is reached |
duke@435 | 369 | void LIRGenerator::walk(Value instr) { |
duke@435 | 370 | InstructionMark im(compilation(), instr); |
duke@435 | 371 | //stop walk when encounter a root |
duke@435 | 372 | if (instr->is_pinned() && instr->as_Phi() == NULL || instr->operand()->is_valid()) { |
duke@435 | 373 | assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited"); |
duke@435 | 374 | } else { |
duke@435 | 375 | assert(instr->subst() == instr, "shouldn't have missed substitution"); |
duke@435 | 376 | instr->visit(this); |
duke@435 | 377 | // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use"); |
duke@435 | 378 | } |
duke@435 | 379 | } |
duke@435 | 380 | |
duke@435 | 381 | |
duke@435 | 382 | CodeEmitInfo* LIRGenerator::state_for(Instruction* x, ValueStack* state, bool ignore_xhandler) { |
duke@435 | 383 | int index; |
duke@435 | 384 | Value value; |
duke@435 | 385 | for_each_stack_value(state, index, value) { |
duke@435 | 386 | assert(value->subst() == value, "missed substition"); |
duke@435 | 387 | if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { |
duke@435 | 388 | walk(value); |
duke@435 | 389 | assert(value->operand()->is_valid(), "must be evaluated now"); |
duke@435 | 390 | } |
duke@435 | 391 | } |
duke@435 | 392 | ValueStack* s = state; |
duke@435 | 393 | int bci = x->bci(); |
duke@435 | 394 | for_each_state(s) { |
duke@435 | 395 | IRScope* scope = s->scope(); |
duke@435 | 396 | ciMethod* method = scope->method(); |
duke@435 | 397 | |
duke@435 | 398 | MethodLivenessResult liveness = method->liveness_at_bci(bci); |
duke@435 | 399 | if (bci == SynchronizationEntryBCI) { |
duke@435 | 400 | if (x->as_ExceptionObject() || x->as_Throw()) { |
duke@435 | 401 | // all locals are dead on exit from the synthetic unlocker |
duke@435 | 402 | liveness.clear(); |
duke@435 | 403 | } else { |
duke@435 | 404 | assert(x->as_MonitorEnter(), "only other case is MonitorEnter"); |
duke@435 | 405 | } |
duke@435 | 406 | } |
duke@435 | 407 | if (!liveness.is_valid()) { |
duke@435 | 408 | // Degenerate or breakpointed method. |
duke@435 | 409 | bailout("Degenerate or breakpointed method"); |
duke@435 | 410 | } else { |
duke@435 | 411 | assert((int)liveness.size() == s->locals_size(), "error in use of liveness"); |
duke@435 | 412 | for_each_local_value(s, index, value) { |
duke@435 | 413 | assert(value->subst() == value, "missed substition"); |
duke@435 | 414 | if (liveness.at(index) && !value->type()->is_illegal()) { |
duke@435 | 415 | if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { |
duke@435 | 416 | walk(value); |
duke@435 | 417 | assert(value->operand()->is_valid(), "must be evaluated now"); |
duke@435 | 418 | } |
duke@435 | 419 | } else { |
duke@435 | 420 | // NULL out this local so that linear scan can assume that all non-NULL values are live. |
duke@435 | 421 | s->invalidate_local(index); |
duke@435 | 422 | } |
duke@435 | 423 | } |
duke@435 | 424 | } |
duke@435 | 425 | bci = scope->caller_bci(); |
duke@435 | 426 | } |
duke@435 | 427 | |
duke@435 | 428 | return new CodeEmitInfo(x->bci(), state, ignore_xhandler ? NULL : x->exception_handlers()); |
duke@435 | 429 | } |
duke@435 | 430 | |
duke@435 | 431 | |
duke@435 | 432 | CodeEmitInfo* LIRGenerator::state_for(Instruction* x) { |
duke@435 | 433 | return state_for(x, x->lock_stack()); |
duke@435 | 434 | } |
duke@435 | 435 | |
duke@435 | 436 | |
duke@435 | 437 | void LIRGenerator::jobject2reg_with_patching(LIR_Opr r, ciObject* obj, CodeEmitInfo* info) { |
duke@435 | 438 | if (!obj->is_loaded() || PatchALot) { |
duke@435 | 439 | assert(info != NULL, "info must be set if class is not loaded"); |
duke@435 | 440 | __ oop2reg_patch(NULL, r, info); |
duke@435 | 441 | } else { |
duke@435 | 442 | // no patching needed |
jrose@1424 | 443 | __ oop2reg(obj->constant_encoding(), r); |
duke@435 | 444 | } |
duke@435 | 445 | } |
duke@435 | 446 | |
duke@435 | 447 | |
duke@435 | 448 | void LIRGenerator::array_range_check(LIR_Opr array, LIR_Opr index, |
duke@435 | 449 | CodeEmitInfo* null_check_info, CodeEmitInfo* range_check_info) { |
duke@435 | 450 | CodeStub* stub = new RangeCheckStub(range_check_info, index); |
duke@435 | 451 | if (index->is_constant()) { |
duke@435 | 452 | cmp_mem_int(lir_cond_belowEqual, array, arrayOopDesc::length_offset_in_bytes(), |
duke@435 | 453 | index->as_jint(), null_check_info); |
duke@435 | 454 | __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch |
duke@435 | 455 | } else { |
duke@435 | 456 | cmp_reg_mem(lir_cond_aboveEqual, index, array, |
duke@435 | 457 | arrayOopDesc::length_offset_in_bytes(), T_INT, null_check_info); |
duke@435 | 458 | __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch |
duke@435 | 459 | } |
duke@435 | 460 | } |
duke@435 | 461 | |
duke@435 | 462 | |
duke@435 | 463 | void LIRGenerator::nio_range_check(LIR_Opr buffer, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) { |
duke@435 | 464 | CodeStub* stub = new RangeCheckStub(info, index, true); |
duke@435 | 465 | if (index->is_constant()) { |
duke@435 | 466 | cmp_mem_int(lir_cond_belowEqual, buffer, java_nio_Buffer::limit_offset(), index->as_jint(), info); |
duke@435 | 467 | __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch |
duke@435 | 468 | } else { |
duke@435 | 469 | cmp_reg_mem(lir_cond_aboveEqual, index, buffer, |
duke@435 | 470 | java_nio_Buffer::limit_offset(), T_INT, info); |
duke@435 | 471 | __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch |
duke@435 | 472 | } |
duke@435 | 473 | __ move(index, result); |
duke@435 | 474 | } |
duke@435 | 475 | |
duke@435 | 476 | |
duke@435 | 477 | // increment a counter returning the incremented value |
duke@435 | 478 | LIR_Opr LIRGenerator::increment_and_return_counter(LIR_Opr base, int offset, int increment) { |
duke@435 | 479 | LIR_Address* counter = new LIR_Address(base, offset, T_INT); |
duke@435 | 480 | LIR_Opr result = new_register(T_INT); |
duke@435 | 481 | __ load(counter, result); |
duke@435 | 482 | __ add(result, LIR_OprFact::intConst(increment), result); |
duke@435 | 483 | __ store(result, counter); |
duke@435 | 484 | return result; |
duke@435 | 485 | } |
duke@435 | 486 | |
duke@435 | 487 | |
duke@435 | 488 | 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) { |
duke@435 | 489 | LIR_Opr result_op = result; |
duke@435 | 490 | LIR_Opr left_op = left; |
duke@435 | 491 | LIR_Opr right_op = right; |
duke@435 | 492 | |
duke@435 | 493 | if (TwoOperandLIRForm && left_op != result_op) { |
duke@435 | 494 | assert(right_op != result_op, "malformed"); |
duke@435 | 495 | __ move(left_op, result_op); |
duke@435 | 496 | left_op = result_op; |
duke@435 | 497 | } |
duke@435 | 498 | |
duke@435 | 499 | switch(code) { |
duke@435 | 500 | case Bytecodes::_dadd: |
duke@435 | 501 | case Bytecodes::_fadd: |
duke@435 | 502 | case Bytecodes::_ladd: |
duke@435 | 503 | case Bytecodes::_iadd: __ add(left_op, right_op, result_op); break; |
duke@435 | 504 | case Bytecodes::_fmul: |
duke@435 | 505 | case Bytecodes::_lmul: __ mul(left_op, right_op, result_op); break; |
duke@435 | 506 | |
duke@435 | 507 | case Bytecodes::_dmul: |
duke@435 | 508 | { |
duke@435 | 509 | if (is_strictfp) { |
duke@435 | 510 | __ mul_strictfp(left_op, right_op, result_op, tmp_op); break; |
duke@435 | 511 | } else { |
duke@435 | 512 | __ mul(left_op, right_op, result_op); break; |
duke@435 | 513 | } |
duke@435 | 514 | } |
duke@435 | 515 | break; |
duke@435 | 516 | |
duke@435 | 517 | case Bytecodes::_imul: |
duke@435 | 518 | { |
duke@435 | 519 | bool did_strength_reduce = false; |
duke@435 | 520 | |
duke@435 | 521 | if (right->is_constant()) { |
duke@435 | 522 | int c = right->as_jint(); |
duke@435 | 523 | if (is_power_of_2(c)) { |
duke@435 | 524 | // do not need tmp here |
duke@435 | 525 | __ shift_left(left_op, exact_log2(c), result_op); |
duke@435 | 526 | did_strength_reduce = true; |
duke@435 | 527 | } else { |
duke@435 | 528 | did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op); |
duke@435 | 529 | } |
duke@435 | 530 | } |
duke@435 | 531 | // we couldn't strength reduce so just emit the multiply |
duke@435 | 532 | if (!did_strength_reduce) { |
duke@435 | 533 | __ mul(left_op, right_op, result_op); |
duke@435 | 534 | } |
duke@435 | 535 | } |
duke@435 | 536 | break; |
duke@435 | 537 | |
duke@435 | 538 | case Bytecodes::_dsub: |
duke@435 | 539 | case Bytecodes::_fsub: |
duke@435 | 540 | case Bytecodes::_lsub: |
duke@435 | 541 | case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break; |
duke@435 | 542 | |
duke@435 | 543 | case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break; |
duke@435 | 544 | // ldiv and lrem are implemented with a direct runtime call |
duke@435 | 545 | |
duke@435 | 546 | case Bytecodes::_ddiv: |
duke@435 | 547 | { |
duke@435 | 548 | if (is_strictfp) { |
duke@435 | 549 | __ div_strictfp (left_op, right_op, result_op, tmp_op); break; |
duke@435 | 550 | } else { |
duke@435 | 551 | __ div (left_op, right_op, result_op); break; |
duke@435 | 552 | } |
duke@435 | 553 | } |
duke@435 | 554 | break; |
duke@435 | 555 | |
duke@435 | 556 | case Bytecodes::_drem: |
duke@435 | 557 | case Bytecodes::_frem: __ rem (left_op, right_op, result_op); break; |
duke@435 | 558 | |
duke@435 | 559 | default: ShouldNotReachHere(); |
duke@435 | 560 | } |
duke@435 | 561 | } |
duke@435 | 562 | |
duke@435 | 563 | |
duke@435 | 564 | void LIRGenerator::arithmetic_op_int(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr tmp) { |
duke@435 | 565 | arithmetic_op(code, result, left, right, false, tmp); |
duke@435 | 566 | } |
duke@435 | 567 | |
duke@435 | 568 | |
duke@435 | 569 | void LIRGenerator::arithmetic_op_long(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) { |
duke@435 | 570 | arithmetic_op(code, result, left, right, false, LIR_OprFact::illegalOpr, info); |
duke@435 | 571 | } |
duke@435 | 572 | |
duke@435 | 573 | |
duke@435 | 574 | void LIRGenerator::arithmetic_op_fpu(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, bool is_strictfp, LIR_Opr tmp) { |
duke@435 | 575 | arithmetic_op(code, result, left, right, is_strictfp, tmp); |
duke@435 | 576 | } |
duke@435 | 577 | |
duke@435 | 578 | |
duke@435 | 579 | void LIRGenerator::shift_op(Bytecodes::Code code, LIR_Opr result_op, LIR_Opr value, LIR_Opr count, LIR_Opr tmp) { |
duke@435 | 580 | if (TwoOperandLIRForm && value != result_op) { |
duke@435 | 581 | assert(count != result_op, "malformed"); |
duke@435 | 582 | __ move(value, result_op); |
duke@435 | 583 | value = result_op; |
duke@435 | 584 | } |
duke@435 | 585 | |
duke@435 | 586 | assert(count->is_constant() || count->is_register(), "must be"); |
duke@435 | 587 | switch(code) { |
duke@435 | 588 | case Bytecodes::_ishl: |
duke@435 | 589 | case Bytecodes::_lshl: __ shift_left(value, count, result_op, tmp); break; |
duke@435 | 590 | case Bytecodes::_ishr: |
duke@435 | 591 | case Bytecodes::_lshr: __ shift_right(value, count, result_op, tmp); break; |
duke@435 | 592 | case Bytecodes::_iushr: |
duke@435 | 593 | case Bytecodes::_lushr: __ unsigned_shift_right(value, count, result_op, tmp); break; |
duke@435 | 594 | default: ShouldNotReachHere(); |
duke@435 | 595 | } |
duke@435 | 596 | } |
duke@435 | 597 | |
duke@435 | 598 | |
duke@435 | 599 | void LIRGenerator::logic_op (Bytecodes::Code code, LIR_Opr result_op, LIR_Opr left_op, LIR_Opr right_op) { |
duke@435 | 600 | if (TwoOperandLIRForm && left_op != result_op) { |
duke@435 | 601 | assert(right_op != result_op, "malformed"); |
duke@435 | 602 | __ move(left_op, result_op); |
duke@435 | 603 | left_op = result_op; |
duke@435 | 604 | } |
duke@435 | 605 | |
duke@435 | 606 | switch(code) { |
duke@435 | 607 | case Bytecodes::_iand: |
duke@435 | 608 | case Bytecodes::_land: __ logical_and(left_op, right_op, result_op); break; |
duke@435 | 609 | |
duke@435 | 610 | case Bytecodes::_ior: |
duke@435 | 611 | case Bytecodes::_lor: __ logical_or(left_op, right_op, result_op); break; |
duke@435 | 612 | |
duke@435 | 613 | case Bytecodes::_ixor: |
duke@435 | 614 | case Bytecodes::_lxor: __ logical_xor(left_op, right_op, result_op); break; |
duke@435 | 615 | |
duke@435 | 616 | default: ShouldNotReachHere(); |
duke@435 | 617 | } |
duke@435 | 618 | } |
duke@435 | 619 | |
duke@435 | 620 | |
duke@435 | 621 | 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) { |
duke@435 | 622 | if (!GenerateSynchronizationCode) return; |
duke@435 | 623 | // for slow path, use debug info for state after successful locking |
duke@435 | 624 | CodeStub* slow_path = new MonitorEnterStub(object, lock, info); |
duke@435 | 625 | __ load_stack_address_monitor(monitor_no, lock); |
duke@435 | 626 | // for handling NullPointerException, use debug info representing just the lock stack before this monitorenter |
duke@435 | 627 | __ lock_object(hdr, object, lock, scratch, slow_path, info_for_exception); |
duke@435 | 628 | } |
duke@435 | 629 | |
duke@435 | 630 | |
duke@435 | 631 | void LIRGenerator::monitor_exit(LIR_Opr object, LIR_Opr lock, LIR_Opr new_hdr, int monitor_no) { |
duke@435 | 632 | if (!GenerateSynchronizationCode) return; |
duke@435 | 633 | // setup registers |
duke@435 | 634 | LIR_Opr hdr = lock; |
duke@435 | 635 | lock = new_hdr; |
duke@435 | 636 | CodeStub* slow_path = new MonitorExitStub(lock, UseFastLocking, monitor_no); |
duke@435 | 637 | __ load_stack_address_monitor(monitor_no, lock); |
duke@435 | 638 | __ unlock_object(hdr, object, lock, slow_path); |
duke@435 | 639 | } |
duke@435 | 640 | |
duke@435 | 641 | |
duke@435 | 642 | 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) { |
duke@435 | 643 | jobject2reg_with_patching(klass_reg, klass, info); |
duke@435 | 644 | // If klass is not loaded we do not know if the klass has finalizers: |
duke@435 | 645 | if (UseFastNewInstance && klass->is_loaded() |
duke@435 | 646 | && !Klass::layout_helper_needs_slow_path(klass->layout_helper())) { |
duke@435 | 647 | |
duke@435 | 648 | Runtime1::StubID stub_id = klass->is_initialized() ? Runtime1::fast_new_instance_id : Runtime1::fast_new_instance_init_check_id; |
duke@435 | 649 | |
duke@435 | 650 | CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, stub_id); |
duke@435 | 651 | |
duke@435 | 652 | assert(klass->is_loaded(), "must be loaded"); |
duke@435 | 653 | // allocate space for instance |
duke@435 | 654 | assert(klass->size_helper() >= 0, "illegal instance size"); |
duke@435 | 655 | const int instance_size = align_object_size(klass->size_helper()); |
duke@435 | 656 | __ allocate_object(dst, scratch1, scratch2, scratch3, scratch4, |
duke@435 | 657 | oopDesc::header_size(), instance_size, klass_reg, !klass->is_initialized(), slow_path); |
duke@435 | 658 | } else { |
duke@435 | 659 | CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, Runtime1::new_instance_id); |
duke@435 | 660 | __ branch(lir_cond_always, T_ILLEGAL, slow_path); |
duke@435 | 661 | __ branch_destination(slow_path->continuation()); |
duke@435 | 662 | } |
duke@435 | 663 | } |
duke@435 | 664 | |
duke@435 | 665 | |
duke@435 | 666 | static bool is_constant_zero(Instruction* inst) { |
duke@435 | 667 | IntConstant* c = inst->type()->as_IntConstant(); |
duke@435 | 668 | if (c) { |
duke@435 | 669 | return (c->value() == 0); |
duke@435 | 670 | } |
duke@435 | 671 | return false; |
duke@435 | 672 | } |
duke@435 | 673 | |
duke@435 | 674 | |
duke@435 | 675 | static bool positive_constant(Instruction* inst) { |
duke@435 | 676 | IntConstant* c = inst->type()->as_IntConstant(); |
duke@435 | 677 | if (c) { |
duke@435 | 678 | return (c->value() >= 0); |
duke@435 | 679 | } |
duke@435 | 680 | return false; |
duke@435 | 681 | } |
duke@435 | 682 | |
duke@435 | 683 | |
duke@435 | 684 | static ciArrayKlass* as_array_klass(ciType* type) { |
duke@435 | 685 | if (type != NULL && type->is_array_klass() && type->is_loaded()) { |
duke@435 | 686 | return (ciArrayKlass*)type; |
duke@435 | 687 | } else { |
duke@435 | 688 | return NULL; |
duke@435 | 689 | } |
duke@435 | 690 | } |
duke@435 | 691 | |
duke@435 | 692 | void LIRGenerator::arraycopy_helper(Intrinsic* x, int* flagsp, ciArrayKlass** expected_typep) { |
duke@435 | 693 | Instruction* src = x->argument_at(0); |
duke@435 | 694 | Instruction* src_pos = x->argument_at(1); |
duke@435 | 695 | Instruction* dst = x->argument_at(2); |
duke@435 | 696 | Instruction* dst_pos = x->argument_at(3); |
duke@435 | 697 | Instruction* length = x->argument_at(4); |
duke@435 | 698 | |
duke@435 | 699 | // first try to identify the likely type of the arrays involved |
duke@435 | 700 | ciArrayKlass* expected_type = NULL; |
duke@435 | 701 | bool is_exact = false; |
duke@435 | 702 | { |
duke@435 | 703 | ciArrayKlass* src_exact_type = as_array_klass(src->exact_type()); |
duke@435 | 704 | ciArrayKlass* src_declared_type = as_array_klass(src->declared_type()); |
duke@435 | 705 | ciArrayKlass* dst_exact_type = as_array_klass(dst->exact_type()); |
duke@435 | 706 | ciArrayKlass* dst_declared_type = as_array_klass(dst->declared_type()); |
duke@435 | 707 | if (src_exact_type != NULL && src_exact_type == dst_exact_type) { |
duke@435 | 708 | // the types exactly match so the type is fully known |
duke@435 | 709 | is_exact = true; |
duke@435 | 710 | expected_type = src_exact_type; |
duke@435 | 711 | } else if (dst_exact_type != NULL && dst_exact_type->is_obj_array_klass()) { |
duke@435 | 712 | ciArrayKlass* dst_type = (ciArrayKlass*) dst_exact_type; |
duke@435 | 713 | ciArrayKlass* src_type = NULL; |
duke@435 | 714 | if (src_exact_type != NULL && src_exact_type->is_obj_array_klass()) { |
duke@435 | 715 | src_type = (ciArrayKlass*) src_exact_type; |
duke@435 | 716 | } else if (src_declared_type != NULL && src_declared_type->is_obj_array_klass()) { |
duke@435 | 717 | src_type = (ciArrayKlass*) src_declared_type; |
duke@435 | 718 | } |
duke@435 | 719 | if (src_type != NULL) { |
duke@435 | 720 | if (src_type->element_type()->is_subtype_of(dst_type->element_type())) { |
duke@435 | 721 | is_exact = true; |
duke@435 | 722 | expected_type = dst_type; |
duke@435 | 723 | } |
duke@435 | 724 | } |
duke@435 | 725 | } |
duke@435 | 726 | // at least pass along a good guess |
duke@435 | 727 | if (expected_type == NULL) expected_type = dst_exact_type; |
duke@435 | 728 | if (expected_type == NULL) expected_type = src_declared_type; |
duke@435 | 729 | if (expected_type == NULL) expected_type = dst_declared_type; |
duke@435 | 730 | } |
duke@435 | 731 | |
duke@435 | 732 | // if a probable array type has been identified, figure out if any |
duke@435 | 733 | // of the required checks for a fast case can be elided. |
duke@435 | 734 | int flags = LIR_OpArrayCopy::all_flags; |
duke@435 | 735 | if (expected_type != NULL) { |
duke@435 | 736 | // try to skip null checks |
duke@435 | 737 | if (src->as_NewArray() != NULL) |
duke@435 | 738 | flags &= ~LIR_OpArrayCopy::src_null_check; |
duke@435 | 739 | if (dst->as_NewArray() != NULL) |
duke@435 | 740 | flags &= ~LIR_OpArrayCopy::dst_null_check; |
duke@435 | 741 | |
duke@435 | 742 | // check from incoming constant values |
duke@435 | 743 | if (positive_constant(src_pos)) |
duke@435 | 744 | flags &= ~LIR_OpArrayCopy::src_pos_positive_check; |
duke@435 | 745 | if (positive_constant(dst_pos)) |
duke@435 | 746 | flags &= ~LIR_OpArrayCopy::dst_pos_positive_check; |
duke@435 | 747 | if (positive_constant(length)) |
duke@435 | 748 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 749 | |
duke@435 | 750 | // see if the range check can be elided, which might also imply |
duke@435 | 751 | // that src or dst is non-null. |
duke@435 | 752 | ArrayLength* al = length->as_ArrayLength(); |
duke@435 | 753 | if (al != NULL) { |
duke@435 | 754 | if (al->array() == src) { |
duke@435 | 755 | // it's the length of the source array |
duke@435 | 756 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 757 | flags &= ~LIR_OpArrayCopy::src_null_check; |
duke@435 | 758 | if (is_constant_zero(src_pos)) |
duke@435 | 759 | flags &= ~LIR_OpArrayCopy::src_range_check; |
duke@435 | 760 | } |
duke@435 | 761 | if (al->array() == dst) { |
duke@435 | 762 | // it's the length of the destination array |
duke@435 | 763 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 764 | flags &= ~LIR_OpArrayCopy::dst_null_check; |
duke@435 | 765 | if (is_constant_zero(dst_pos)) |
duke@435 | 766 | flags &= ~LIR_OpArrayCopy::dst_range_check; |
duke@435 | 767 | } |
duke@435 | 768 | } |
duke@435 | 769 | if (is_exact) { |
duke@435 | 770 | flags &= ~LIR_OpArrayCopy::type_check; |
duke@435 | 771 | } |
duke@435 | 772 | } |
duke@435 | 773 | |
duke@435 | 774 | if (src == dst) { |
duke@435 | 775 | // moving within a single array so no type checks are needed |
duke@435 | 776 | if (flags & LIR_OpArrayCopy::type_check) { |
duke@435 | 777 | flags &= ~LIR_OpArrayCopy::type_check; |
duke@435 | 778 | } |
duke@435 | 779 | } |
duke@435 | 780 | *flagsp = flags; |
duke@435 | 781 | *expected_typep = (ciArrayKlass*)expected_type; |
duke@435 | 782 | } |
duke@435 | 783 | |
duke@435 | 784 | |
duke@435 | 785 | LIR_Opr LIRGenerator::round_item(LIR_Opr opr) { |
duke@435 | 786 | assert(opr->is_register(), "why spill if item is not register?"); |
duke@435 | 787 | |
duke@435 | 788 | if (RoundFPResults && UseSSE < 1 && opr->is_single_fpu()) { |
duke@435 | 789 | LIR_Opr result = new_register(T_FLOAT); |
duke@435 | 790 | set_vreg_flag(result, must_start_in_memory); |
duke@435 | 791 | assert(opr->is_register(), "only a register can be spilled"); |
duke@435 | 792 | assert(opr->value_type()->is_float(), "rounding only for floats available"); |
duke@435 | 793 | __ roundfp(opr, LIR_OprFact::illegalOpr, result); |
duke@435 | 794 | return result; |
duke@435 | 795 | } |
duke@435 | 796 | return opr; |
duke@435 | 797 | } |
duke@435 | 798 | |
duke@435 | 799 | |
duke@435 | 800 | LIR_Opr LIRGenerator::force_to_spill(LIR_Opr value, BasicType t) { |
duke@435 | 801 | assert(type2size[t] == type2size[value->type()], "size mismatch"); |
duke@435 | 802 | if (!value->is_register()) { |
duke@435 | 803 | // force into a register |
duke@435 | 804 | LIR_Opr r = new_register(value->type()); |
duke@435 | 805 | __ move(value, r); |
duke@435 | 806 | value = r; |
duke@435 | 807 | } |
duke@435 | 808 | |
duke@435 | 809 | // create a spill location |
duke@435 | 810 | LIR_Opr tmp = new_register(t); |
duke@435 | 811 | set_vreg_flag(tmp, LIRGenerator::must_start_in_memory); |
duke@435 | 812 | |
duke@435 | 813 | // move from register to spill |
duke@435 | 814 | __ move(value, tmp); |
duke@435 | 815 | return tmp; |
duke@435 | 816 | } |
duke@435 | 817 | |
duke@435 | 818 | |
duke@435 | 819 | void LIRGenerator::profile_branch(If* if_instr, If::Condition cond) { |
duke@435 | 820 | if (if_instr->should_profile()) { |
duke@435 | 821 | ciMethod* method = if_instr->profiled_method(); |
duke@435 | 822 | assert(method != NULL, "method should be set if branch is profiled"); |
duke@435 | 823 | ciMethodData* md = method->method_data(); |
duke@435 | 824 | if (md == NULL) { |
duke@435 | 825 | bailout("out of memory building methodDataOop"); |
duke@435 | 826 | return; |
duke@435 | 827 | } |
duke@435 | 828 | ciProfileData* data = md->bci_to_data(if_instr->profiled_bci()); |
duke@435 | 829 | assert(data != NULL, "must have profiling data"); |
duke@435 | 830 | assert(data->is_BranchData(), "need BranchData for two-way branches"); |
duke@435 | 831 | int taken_count_offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); |
duke@435 | 832 | int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); |
duke@435 | 833 | LIR_Opr md_reg = new_register(T_OBJECT); |
jrose@1424 | 834 | __ move(LIR_OprFact::oopConst(md->constant_encoding()), md_reg); |
duke@435 | 835 | LIR_Opr data_offset_reg = new_register(T_INT); |
duke@435 | 836 | __ cmove(lir_cond(cond), |
duke@435 | 837 | LIR_OprFact::intConst(taken_count_offset), |
duke@435 | 838 | LIR_OprFact::intConst(not_taken_count_offset), |
duke@435 | 839 | data_offset_reg); |
duke@435 | 840 | LIR_Opr data_reg = new_register(T_INT); |
duke@435 | 841 | LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, T_INT); |
duke@435 | 842 | __ move(LIR_OprFact::address(data_addr), data_reg); |
duke@435 | 843 | LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT); |
duke@435 | 844 | // Use leal instead of add to avoid destroying condition codes on x86 |
duke@435 | 845 | __ leal(LIR_OprFact::address(fake_incr_value), data_reg); |
duke@435 | 846 | __ move(data_reg, LIR_OprFact::address(data_addr)); |
duke@435 | 847 | } |
duke@435 | 848 | } |
duke@435 | 849 | |
duke@435 | 850 | |
duke@435 | 851 | // Phi technique: |
duke@435 | 852 | // This is about passing live values from one basic block to the other. |
duke@435 | 853 | // In code generated with Java it is rather rare that more than one |
duke@435 | 854 | // value is on the stack from one basic block to the other. |
duke@435 | 855 | // We optimize our technique for efficient passing of one value |
duke@435 | 856 | // (of type long, int, double..) but it can be extended. |
duke@435 | 857 | // When entering or leaving a basic block, all registers and all spill |
duke@435 | 858 | // slots are release and empty. We use the released registers |
duke@435 | 859 | // and spill slots to pass the live values from one block |
duke@435 | 860 | // to the other. The topmost value, i.e., the value on TOS of expression |
duke@435 | 861 | // stack is passed in registers. All other values are stored in spilling |
duke@435 | 862 | // area. Every Phi has an index which designates its spill slot |
duke@435 | 863 | // At exit of a basic block, we fill the register(s) and spill slots. |
duke@435 | 864 | // At entry of a basic block, the block_prolog sets up the content of phi nodes |
duke@435 | 865 | // and locks necessary registers and spilling slots. |
duke@435 | 866 | |
duke@435 | 867 | |
duke@435 | 868 | // move current value to referenced phi function |
duke@435 | 869 | void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_val) { |
duke@435 | 870 | Phi* phi = sux_val->as_Phi(); |
duke@435 | 871 | // cur_val can be null without phi being null in conjunction with inlining |
duke@435 | 872 | if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) { |
duke@435 | 873 | LIR_Opr operand = cur_val->operand(); |
duke@435 | 874 | if (cur_val->operand()->is_illegal()) { |
duke@435 | 875 | assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL, |
duke@435 | 876 | "these can be produced lazily"); |
duke@435 | 877 | operand = operand_for_instruction(cur_val); |
duke@435 | 878 | } |
duke@435 | 879 | resolver->move(operand, operand_for_instruction(phi)); |
duke@435 | 880 | } |
duke@435 | 881 | } |
duke@435 | 882 | |
duke@435 | 883 | |
duke@435 | 884 | // Moves all stack values into their PHI position |
duke@435 | 885 | void LIRGenerator::move_to_phi(ValueStack* cur_state) { |
duke@435 | 886 | BlockBegin* bb = block(); |
duke@435 | 887 | if (bb->number_of_sux() == 1) { |
duke@435 | 888 | BlockBegin* sux = bb->sux_at(0); |
duke@435 | 889 | assert(sux->number_of_preds() > 0, "invalid CFG"); |
duke@435 | 890 | |
duke@435 | 891 | // a block with only one predecessor never has phi functions |
duke@435 | 892 | if (sux->number_of_preds() > 1) { |
duke@435 | 893 | int max_phis = cur_state->stack_size() + cur_state->locals_size(); |
duke@435 | 894 | PhiResolver resolver(this, _virtual_register_number + max_phis * 2); |
duke@435 | 895 | |
duke@435 | 896 | ValueStack* sux_state = sux->state(); |
duke@435 | 897 | Value sux_value; |
duke@435 | 898 | int index; |
duke@435 | 899 | |
duke@435 | 900 | for_each_stack_value(sux_state, index, sux_value) { |
duke@435 | 901 | move_to_phi(&resolver, cur_state->stack_at(index), sux_value); |
duke@435 | 902 | } |
duke@435 | 903 | |
duke@435 | 904 | // Inlining may cause the local state not to match up, so walk up |
duke@435 | 905 | // the caller state until we get to the same scope as the |
duke@435 | 906 | // successor and then start processing from there. |
duke@435 | 907 | while (cur_state->scope() != sux_state->scope()) { |
duke@435 | 908 | cur_state = cur_state->caller_state(); |
duke@435 | 909 | assert(cur_state != NULL, "scopes don't match up"); |
duke@435 | 910 | } |
duke@435 | 911 | |
duke@435 | 912 | for_each_local_value(sux_state, index, sux_value) { |
duke@435 | 913 | move_to_phi(&resolver, cur_state->local_at(index), sux_value); |
duke@435 | 914 | } |
duke@435 | 915 | |
duke@435 | 916 | assert(cur_state->caller_state() == sux_state->caller_state(), "caller states must be equal"); |
duke@435 | 917 | } |
duke@435 | 918 | } |
duke@435 | 919 | } |
duke@435 | 920 | |
duke@435 | 921 | |
duke@435 | 922 | LIR_Opr LIRGenerator::new_register(BasicType type) { |
duke@435 | 923 | int vreg = _virtual_register_number; |
duke@435 | 924 | // add a little fudge factor for the bailout, since the bailout is |
duke@435 | 925 | // only checked periodically. This gives a few extra registers to |
duke@435 | 926 | // hand out before we really run out, which helps us keep from |
duke@435 | 927 | // tripping over assertions. |
duke@435 | 928 | if (vreg + 20 >= LIR_OprDesc::vreg_max) { |
duke@435 | 929 | bailout("out of virtual registers"); |
duke@435 | 930 | if (vreg + 2 >= LIR_OprDesc::vreg_max) { |
duke@435 | 931 | // wrap it around |
duke@435 | 932 | _virtual_register_number = LIR_OprDesc::vreg_base; |
duke@435 | 933 | } |
duke@435 | 934 | } |
duke@435 | 935 | _virtual_register_number += 1; |
duke@435 | 936 | if (type == T_ADDRESS) type = T_INT; |
duke@435 | 937 | return LIR_OprFact::virtual_register(vreg, type); |
duke@435 | 938 | } |
duke@435 | 939 | |
duke@435 | 940 | |
duke@435 | 941 | // Try to lock using register in hint |
duke@435 | 942 | LIR_Opr LIRGenerator::rlock(Value instr) { |
duke@435 | 943 | return new_register(instr->type()); |
duke@435 | 944 | } |
duke@435 | 945 | |
duke@435 | 946 | |
duke@435 | 947 | // does an rlock and sets result |
duke@435 | 948 | LIR_Opr LIRGenerator::rlock_result(Value x) { |
duke@435 | 949 | LIR_Opr reg = rlock(x); |
duke@435 | 950 | set_result(x, reg); |
duke@435 | 951 | return reg; |
duke@435 | 952 | } |
duke@435 | 953 | |
duke@435 | 954 | |
duke@435 | 955 | // does an rlock and sets result |
duke@435 | 956 | LIR_Opr LIRGenerator::rlock_result(Value x, BasicType type) { |
duke@435 | 957 | LIR_Opr reg; |
duke@435 | 958 | switch (type) { |
duke@435 | 959 | case T_BYTE: |
duke@435 | 960 | case T_BOOLEAN: |
duke@435 | 961 | reg = rlock_byte(type); |
duke@435 | 962 | break; |
duke@435 | 963 | default: |
duke@435 | 964 | reg = rlock(x); |
duke@435 | 965 | break; |
duke@435 | 966 | } |
duke@435 | 967 | |
duke@435 | 968 | set_result(x, reg); |
duke@435 | 969 | return reg; |
duke@435 | 970 | } |
duke@435 | 971 | |
duke@435 | 972 | |
duke@435 | 973 | //--------------------------------------------------------------------- |
duke@435 | 974 | ciObject* LIRGenerator::get_jobject_constant(Value value) { |
duke@435 | 975 | ObjectType* oc = value->type()->as_ObjectType(); |
duke@435 | 976 | if (oc) { |
duke@435 | 977 | return oc->constant_value(); |
duke@435 | 978 | } |
duke@435 | 979 | return NULL; |
duke@435 | 980 | } |
duke@435 | 981 | |
duke@435 | 982 | |
duke@435 | 983 | void LIRGenerator::do_ExceptionObject(ExceptionObject* x) { |
duke@435 | 984 | assert(block()->is_set(BlockBegin::exception_entry_flag), "ExceptionObject only allowed in exception handler block"); |
duke@435 | 985 | assert(block()->next() == x, "ExceptionObject must be first instruction of block"); |
duke@435 | 986 | |
duke@435 | 987 | // no moves are created for phi functions at the begin of exception |
duke@435 | 988 | // handlers, so assign operands manually here |
duke@435 | 989 | for_each_phi_fun(block(), phi, |
duke@435 | 990 | operand_for_instruction(phi)); |
duke@435 | 991 | |
duke@435 | 992 | LIR_Opr thread_reg = getThreadPointer(); |
duke@435 | 993 | __ move(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT), |
duke@435 | 994 | exceptionOopOpr()); |
duke@435 | 995 | __ move(LIR_OprFact::oopConst(NULL), |
duke@435 | 996 | new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT)); |
duke@435 | 997 | __ move(LIR_OprFact::oopConst(NULL), |
duke@435 | 998 | new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT)); |
duke@435 | 999 | |
duke@435 | 1000 | LIR_Opr result = new_register(T_OBJECT); |
duke@435 | 1001 | __ move(exceptionOopOpr(), result); |
duke@435 | 1002 | set_result(x, result); |
duke@435 | 1003 | } |
duke@435 | 1004 | |
duke@435 | 1005 | |
duke@435 | 1006 | //---------------------------------------------------------------------- |
duke@435 | 1007 | //---------------------------------------------------------------------- |
duke@435 | 1008 | //---------------------------------------------------------------------- |
duke@435 | 1009 | //---------------------------------------------------------------------- |
duke@435 | 1010 | // visitor functions |
duke@435 | 1011 | //---------------------------------------------------------------------- |
duke@435 | 1012 | //---------------------------------------------------------------------- |
duke@435 | 1013 | //---------------------------------------------------------------------- |
duke@435 | 1014 | //---------------------------------------------------------------------- |
duke@435 | 1015 | |
duke@435 | 1016 | void LIRGenerator::do_Phi(Phi* x) { |
duke@435 | 1017 | // phi functions are never visited directly |
duke@435 | 1018 | ShouldNotReachHere(); |
duke@435 | 1019 | } |
duke@435 | 1020 | |
duke@435 | 1021 | |
duke@435 | 1022 | // Code for a constant is generated lazily unless the constant is frequently used and can't be inlined. |
duke@435 | 1023 | void LIRGenerator::do_Constant(Constant* x) { |
duke@435 | 1024 | if (x->state() != NULL) { |
duke@435 | 1025 | // Any constant with a ValueStack requires patching so emit the patch here |
duke@435 | 1026 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1027 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 1028 | __ oop2reg_patch(NULL, reg, info); |
duke@435 | 1029 | } else if (x->use_count() > 1 && !can_inline_as_constant(x)) { |
duke@435 | 1030 | if (!x->is_pinned()) { |
duke@435 | 1031 | // unpinned constants are handled specially so that they can be |
duke@435 | 1032 | // put into registers when they are used multiple times within a |
duke@435 | 1033 | // block. After the block completes their operand will be |
duke@435 | 1034 | // cleared so that other blocks can't refer to that register. |
duke@435 | 1035 | set_result(x, load_constant(x)); |
duke@435 | 1036 | } else { |
duke@435 | 1037 | LIR_Opr res = x->operand(); |
duke@435 | 1038 | if (!res->is_valid()) { |
duke@435 | 1039 | res = LIR_OprFact::value_type(x->type()); |
duke@435 | 1040 | } |
duke@435 | 1041 | if (res->is_constant()) { |
duke@435 | 1042 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1043 | __ move(res, reg); |
duke@435 | 1044 | } else { |
duke@435 | 1045 | set_result(x, res); |
duke@435 | 1046 | } |
duke@435 | 1047 | } |
duke@435 | 1048 | } else { |
duke@435 | 1049 | set_result(x, LIR_OprFact::value_type(x->type())); |
duke@435 | 1050 | } |
duke@435 | 1051 | } |
duke@435 | 1052 | |
duke@435 | 1053 | |
duke@435 | 1054 | void LIRGenerator::do_Local(Local* x) { |
duke@435 | 1055 | // operand_for_instruction has the side effect of setting the result |
duke@435 | 1056 | // so there's no need to do it here. |
duke@435 | 1057 | operand_for_instruction(x); |
duke@435 | 1058 | } |
duke@435 | 1059 | |
duke@435 | 1060 | |
duke@435 | 1061 | void LIRGenerator::do_IfInstanceOf(IfInstanceOf* x) { |
duke@435 | 1062 | Unimplemented(); |
duke@435 | 1063 | } |
duke@435 | 1064 | |
duke@435 | 1065 | |
duke@435 | 1066 | void LIRGenerator::do_Return(Return* x) { |
kvn@1215 | 1067 | if (compilation()->env()->dtrace_method_probes()) { |
duke@435 | 1068 | BasicTypeList signature; |
duke@435 | 1069 | signature.append(T_INT); // thread |
duke@435 | 1070 | signature.append(T_OBJECT); // methodOop |
duke@435 | 1071 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 1072 | args->append(getThreadPointer()); |
duke@435 | 1073 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 1074 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 1075 | args->append(meth); |
duke@435 | 1076 | call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL); |
duke@435 | 1077 | } |
duke@435 | 1078 | |
duke@435 | 1079 | if (x->type()->is_void()) { |
duke@435 | 1080 | __ return_op(LIR_OprFact::illegalOpr); |
duke@435 | 1081 | } else { |
duke@435 | 1082 | LIR_Opr reg = result_register_for(x->type(), /*callee=*/true); |
duke@435 | 1083 | LIRItem result(x->result(), this); |
duke@435 | 1084 | |
duke@435 | 1085 | result.load_item_force(reg); |
duke@435 | 1086 | __ return_op(result.result()); |
duke@435 | 1087 | } |
duke@435 | 1088 | set_no_result(x); |
duke@435 | 1089 | } |
duke@435 | 1090 | |
duke@435 | 1091 | |
duke@435 | 1092 | // Example: object.getClass () |
duke@435 | 1093 | void LIRGenerator::do_getClass(Intrinsic* x) { |
duke@435 | 1094 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 1095 | |
duke@435 | 1096 | LIRItem rcvr(x->argument_at(0), this); |
duke@435 | 1097 | rcvr.load_item(); |
duke@435 | 1098 | LIR_Opr result = rlock_result(x); |
duke@435 | 1099 | |
duke@435 | 1100 | // need to perform the null check on the rcvr |
duke@435 | 1101 | CodeEmitInfo* info = NULL; |
duke@435 | 1102 | if (x->needs_null_check()) { |
duke@435 | 1103 | info = state_for(x, x->state()->copy_locks()); |
duke@435 | 1104 | } |
duke@435 | 1105 | __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_OBJECT), result, info); |
duke@435 | 1106 | __ move(new LIR_Address(result, Klass::java_mirror_offset_in_bytes() + |
duke@435 | 1107 | klassOopDesc::klass_part_offset_in_bytes(), T_OBJECT), result); |
duke@435 | 1108 | } |
duke@435 | 1109 | |
duke@435 | 1110 | |
duke@435 | 1111 | // Example: Thread.currentThread() |
duke@435 | 1112 | void LIRGenerator::do_currentThread(Intrinsic* x) { |
duke@435 | 1113 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 1114 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1115 | __ load(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg); |
duke@435 | 1116 | } |
duke@435 | 1117 | |
duke@435 | 1118 | |
duke@435 | 1119 | void LIRGenerator::do_RegisterFinalizer(Intrinsic* x) { |
duke@435 | 1120 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 1121 | LIRItem receiver(x->argument_at(0), this); |
duke@435 | 1122 | |
duke@435 | 1123 | receiver.load_item(); |
duke@435 | 1124 | BasicTypeList signature; |
duke@435 | 1125 | signature.append(T_OBJECT); // receiver |
duke@435 | 1126 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 1127 | args->append(receiver.result()); |
duke@435 | 1128 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 1129 | call_runtime(&signature, args, |
duke@435 | 1130 | CAST_FROM_FN_PTR(address, Runtime1::entry_for(Runtime1::register_finalizer_id)), |
duke@435 | 1131 | voidType, info); |
duke@435 | 1132 | |
duke@435 | 1133 | set_no_result(x); |
duke@435 | 1134 | } |
duke@435 | 1135 | |
duke@435 | 1136 | |
duke@435 | 1137 | //------------------------local access-------------------------------------- |
duke@435 | 1138 | |
duke@435 | 1139 | LIR_Opr LIRGenerator::operand_for_instruction(Instruction* x) { |
duke@435 | 1140 | if (x->operand()->is_illegal()) { |
duke@435 | 1141 | Constant* c = x->as_Constant(); |
duke@435 | 1142 | if (c != NULL) { |
duke@435 | 1143 | x->set_operand(LIR_OprFact::value_type(c->type())); |
duke@435 | 1144 | } else { |
duke@435 | 1145 | assert(x->as_Phi() || x->as_Local() != NULL, "only for Phi and Local"); |
duke@435 | 1146 | // allocate a virtual register for this local or phi |
duke@435 | 1147 | x->set_operand(rlock(x)); |
duke@435 | 1148 | _instruction_for_operand.at_put_grow(x->operand()->vreg_number(), x, NULL); |
duke@435 | 1149 | } |
duke@435 | 1150 | } |
duke@435 | 1151 | return x->operand(); |
duke@435 | 1152 | } |
duke@435 | 1153 | |
duke@435 | 1154 | |
duke@435 | 1155 | Instruction* LIRGenerator::instruction_for_opr(LIR_Opr opr) { |
duke@435 | 1156 | if (opr->is_virtual()) { |
duke@435 | 1157 | return instruction_for_vreg(opr->vreg_number()); |
duke@435 | 1158 | } |
duke@435 | 1159 | return NULL; |
duke@435 | 1160 | } |
duke@435 | 1161 | |
duke@435 | 1162 | |
duke@435 | 1163 | Instruction* LIRGenerator::instruction_for_vreg(int reg_num) { |
duke@435 | 1164 | if (reg_num < _instruction_for_operand.length()) { |
duke@435 | 1165 | return _instruction_for_operand.at(reg_num); |
duke@435 | 1166 | } |
duke@435 | 1167 | return NULL; |
duke@435 | 1168 | } |
duke@435 | 1169 | |
duke@435 | 1170 | |
duke@435 | 1171 | void LIRGenerator::set_vreg_flag(int vreg_num, VregFlag f) { |
duke@435 | 1172 | if (_vreg_flags.size_in_bits() == 0) { |
duke@435 | 1173 | BitMap2D temp(100, num_vreg_flags); |
duke@435 | 1174 | temp.clear(); |
duke@435 | 1175 | _vreg_flags = temp; |
duke@435 | 1176 | } |
duke@435 | 1177 | _vreg_flags.at_put_grow(vreg_num, f, true); |
duke@435 | 1178 | } |
duke@435 | 1179 | |
duke@435 | 1180 | bool LIRGenerator::is_vreg_flag_set(int vreg_num, VregFlag f) { |
duke@435 | 1181 | if (!_vreg_flags.is_valid_index(vreg_num, f)) { |
duke@435 | 1182 | return false; |
duke@435 | 1183 | } |
duke@435 | 1184 | return _vreg_flags.at(vreg_num, f); |
duke@435 | 1185 | } |
duke@435 | 1186 | |
duke@435 | 1187 | |
duke@435 | 1188 | // Block local constant handling. This code is useful for keeping |
duke@435 | 1189 | // unpinned constants and constants which aren't exposed in the IR in |
duke@435 | 1190 | // registers. Unpinned Constant instructions have their operands |
duke@435 | 1191 | // cleared when the block is finished so that other blocks can't end |
duke@435 | 1192 | // up referring to their registers. |
duke@435 | 1193 | |
duke@435 | 1194 | LIR_Opr LIRGenerator::load_constant(Constant* x) { |
duke@435 | 1195 | assert(!x->is_pinned(), "only for unpinned constants"); |
duke@435 | 1196 | _unpinned_constants.append(x); |
duke@435 | 1197 | return load_constant(LIR_OprFact::value_type(x->type())->as_constant_ptr()); |
duke@435 | 1198 | } |
duke@435 | 1199 | |
duke@435 | 1200 | |
duke@435 | 1201 | LIR_Opr LIRGenerator::load_constant(LIR_Const* c) { |
duke@435 | 1202 | BasicType t = c->type(); |
duke@435 | 1203 | for (int i = 0; i < _constants.length(); i++) { |
duke@435 | 1204 | LIR_Const* other = _constants.at(i); |
duke@435 | 1205 | if (t == other->type()) { |
duke@435 | 1206 | switch (t) { |
duke@435 | 1207 | case T_INT: |
duke@435 | 1208 | case T_FLOAT: |
duke@435 | 1209 | if (c->as_jint_bits() != other->as_jint_bits()) continue; |
duke@435 | 1210 | break; |
duke@435 | 1211 | case T_LONG: |
duke@435 | 1212 | case T_DOUBLE: |
never@921 | 1213 | if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue; |
never@921 | 1214 | if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue; |
duke@435 | 1215 | break; |
duke@435 | 1216 | case T_OBJECT: |
duke@435 | 1217 | if (c->as_jobject() != other->as_jobject()) continue; |
duke@435 | 1218 | break; |
duke@435 | 1219 | } |
duke@435 | 1220 | return _reg_for_constants.at(i); |
duke@435 | 1221 | } |
duke@435 | 1222 | } |
duke@435 | 1223 | |
duke@435 | 1224 | LIR_Opr result = new_register(t); |
duke@435 | 1225 | __ move((LIR_Opr)c, result); |
duke@435 | 1226 | _constants.append(c); |
duke@435 | 1227 | _reg_for_constants.append(result); |
duke@435 | 1228 | return result; |
duke@435 | 1229 | } |
duke@435 | 1230 | |
duke@435 | 1231 | // Various barriers |
duke@435 | 1232 | |
ysr@777 | 1233 | void LIRGenerator::pre_barrier(LIR_Opr addr_opr, bool patch, CodeEmitInfo* info) { |
ysr@777 | 1234 | // Do the pre-write barrier, if any. |
ysr@777 | 1235 | switch (_bs->kind()) { |
ysr@777 | 1236 | #ifndef SERIALGC |
ysr@777 | 1237 | case BarrierSet::G1SATBCT: |
ysr@777 | 1238 | case BarrierSet::G1SATBCTLogging: |
ysr@777 | 1239 | G1SATBCardTableModRef_pre_barrier(addr_opr, patch, info); |
ysr@777 | 1240 | break; |
ysr@777 | 1241 | #endif // SERIALGC |
ysr@777 | 1242 | case BarrierSet::CardTableModRef: |
ysr@777 | 1243 | case BarrierSet::CardTableExtension: |
ysr@777 | 1244 | // No pre barriers |
ysr@777 | 1245 | break; |
ysr@777 | 1246 | case BarrierSet::ModRef: |
ysr@777 | 1247 | case BarrierSet::Other: |
ysr@777 | 1248 | // No pre barriers |
ysr@777 | 1249 | break; |
ysr@777 | 1250 | default : |
ysr@777 | 1251 | ShouldNotReachHere(); |
ysr@777 | 1252 | |
ysr@777 | 1253 | } |
ysr@777 | 1254 | } |
ysr@777 | 1255 | |
duke@435 | 1256 | void LIRGenerator::post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
ysr@777 | 1257 | switch (_bs->kind()) { |
ysr@777 | 1258 | #ifndef SERIALGC |
ysr@777 | 1259 | case BarrierSet::G1SATBCT: |
ysr@777 | 1260 | case BarrierSet::G1SATBCTLogging: |
ysr@777 | 1261 | G1SATBCardTableModRef_post_barrier(addr, new_val); |
ysr@777 | 1262 | break; |
ysr@777 | 1263 | #endif // SERIALGC |
duke@435 | 1264 | case BarrierSet::CardTableModRef: |
duke@435 | 1265 | case BarrierSet::CardTableExtension: |
duke@435 | 1266 | CardTableModRef_post_barrier(addr, new_val); |
duke@435 | 1267 | break; |
duke@435 | 1268 | case BarrierSet::ModRef: |
duke@435 | 1269 | case BarrierSet::Other: |
duke@435 | 1270 | // No post barriers |
duke@435 | 1271 | break; |
duke@435 | 1272 | default : |
duke@435 | 1273 | ShouldNotReachHere(); |
duke@435 | 1274 | } |
duke@435 | 1275 | } |
duke@435 | 1276 | |
ysr@777 | 1277 | //////////////////////////////////////////////////////////////////////// |
ysr@777 | 1278 | #ifndef SERIALGC |
ysr@777 | 1279 | |
ysr@777 | 1280 | void LIRGenerator::G1SATBCardTableModRef_pre_barrier(LIR_Opr addr_opr, bool patch, CodeEmitInfo* info) { |
ysr@777 | 1281 | if (G1DisablePreBarrier) return; |
ysr@777 | 1282 | |
ysr@777 | 1283 | // First we test whether marking is in progress. |
ysr@777 | 1284 | BasicType flag_type; |
ysr@777 | 1285 | if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { |
ysr@777 | 1286 | flag_type = T_INT; |
ysr@777 | 1287 | } else { |
ysr@777 | 1288 | guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, |
ysr@777 | 1289 | "Assumption"); |
ysr@777 | 1290 | flag_type = T_BYTE; |
ysr@777 | 1291 | } |
ysr@777 | 1292 | LIR_Opr thrd = getThreadPointer(); |
ysr@777 | 1293 | LIR_Address* mark_active_flag_addr = |
ysr@777 | 1294 | new LIR_Address(thrd, |
ysr@777 | 1295 | in_bytes(JavaThread::satb_mark_queue_offset() + |
ysr@777 | 1296 | PtrQueue::byte_offset_of_active()), |
ysr@777 | 1297 | flag_type); |
ysr@777 | 1298 | // Read the marking-in-progress flag. |
ysr@777 | 1299 | LIR_Opr flag_val = new_register(T_INT); |
ysr@777 | 1300 | __ load(mark_active_flag_addr, flag_val); |
ysr@777 | 1301 | |
ysr@777 | 1302 | LabelObj* start_store = new LabelObj(); |
ysr@777 | 1303 | |
ysr@777 | 1304 | LIR_PatchCode pre_val_patch_code = |
ysr@777 | 1305 | patch ? lir_patch_normal : lir_patch_none; |
ysr@777 | 1306 | |
ysr@777 | 1307 | LIR_Opr pre_val = new_register(T_OBJECT); |
ysr@777 | 1308 | |
ysr@777 | 1309 | __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0)); |
ysr@777 | 1310 | if (!addr_opr->is_address()) { |
ysr@777 | 1311 | assert(addr_opr->is_register(), "must be"); |
ysr@777 | 1312 | addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, 0, T_OBJECT)); |
ysr@777 | 1313 | } |
ysr@777 | 1314 | CodeStub* slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code, |
ysr@777 | 1315 | info); |
ysr@777 | 1316 | __ branch(lir_cond_notEqual, T_INT, slow); |
ysr@777 | 1317 | __ branch_destination(slow->continuation()); |
ysr@777 | 1318 | } |
ysr@777 | 1319 | |
ysr@777 | 1320 | void LIRGenerator::G1SATBCardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
ysr@777 | 1321 | if (G1DisablePostBarrier) return; |
ysr@777 | 1322 | |
ysr@777 | 1323 | // If the "new_val" is a constant NULL, no barrier is necessary. |
ysr@777 | 1324 | if (new_val->is_constant() && |
ysr@777 | 1325 | new_val->as_constant_ptr()->as_jobject() == NULL) return; |
ysr@777 | 1326 | |
ysr@777 | 1327 | if (!new_val->is_register()) { |
ysr@777 | 1328 | LIR_Opr new_val_reg = new_pointer_register(); |
ysr@777 | 1329 | if (new_val->is_constant()) { |
ysr@777 | 1330 | __ move(new_val, new_val_reg); |
ysr@777 | 1331 | } else { |
ysr@777 | 1332 | __ leal(new_val, new_val_reg); |
ysr@777 | 1333 | } |
ysr@777 | 1334 | new_val = new_val_reg; |
ysr@777 | 1335 | } |
ysr@777 | 1336 | assert(new_val->is_register(), "must be a register at this point"); |
ysr@777 | 1337 | |
ysr@777 | 1338 | if (addr->is_address()) { |
ysr@777 | 1339 | LIR_Address* address = addr->as_address_ptr(); |
ysr@777 | 1340 | LIR_Opr ptr = new_pointer_register(); |
ysr@777 | 1341 | if (!address->index()->is_valid() && address->disp() == 0) { |
ysr@777 | 1342 | __ move(address->base(), ptr); |
ysr@777 | 1343 | } else { |
ysr@777 | 1344 | assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); |
ysr@777 | 1345 | __ leal(addr, ptr); |
ysr@777 | 1346 | } |
ysr@777 | 1347 | addr = ptr; |
ysr@777 | 1348 | } |
ysr@777 | 1349 | assert(addr->is_register(), "must be a register at this point"); |
ysr@777 | 1350 | |
ysr@777 | 1351 | LIR_Opr xor_res = new_pointer_register(); |
ysr@777 | 1352 | LIR_Opr xor_shift_res = new_pointer_register(); |
ysr@777 | 1353 | |
ysr@777 | 1354 | if (TwoOperandLIRForm ) { |
ysr@777 | 1355 | __ move(addr, xor_res); |
ysr@777 | 1356 | __ logical_xor(xor_res, new_val, xor_res); |
ysr@777 | 1357 | __ move(xor_res, xor_shift_res); |
ysr@777 | 1358 | __ unsigned_shift_right(xor_shift_res, |
ysr@777 | 1359 | LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), |
ysr@777 | 1360 | xor_shift_res, |
ysr@777 | 1361 | LIR_OprDesc::illegalOpr()); |
ysr@777 | 1362 | } else { |
ysr@777 | 1363 | __ logical_xor(addr, new_val, xor_res); |
ysr@777 | 1364 | __ unsigned_shift_right(xor_res, |
ysr@777 | 1365 | LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), |
ysr@777 | 1366 | xor_shift_res, |
ysr@777 | 1367 | LIR_OprDesc::illegalOpr()); |
ysr@777 | 1368 | } |
ysr@777 | 1369 | |
ysr@777 | 1370 | if (!new_val->is_register()) { |
ysr@777 | 1371 | LIR_Opr new_val_reg = new_pointer_register(); |
ysr@777 | 1372 | __ leal(new_val, new_val_reg); |
ysr@777 | 1373 | new_val = new_val_reg; |
ysr@777 | 1374 | } |
ysr@777 | 1375 | assert(new_val->is_register(), "must be a register at this point"); |
ysr@777 | 1376 | |
ysr@777 | 1377 | __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD)); |
ysr@777 | 1378 | |
ysr@777 | 1379 | CodeStub* slow = new G1PostBarrierStub(addr, new_val); |
ysr@777 | 1380 | __ branch(lir_cond_notEqual, T_INT, slow); |
ysr@777 | 1381 | __ branch_destination(slow->continuation()); |
ysr@777 | 1382 | } |
ysr@777 | 1383 | |
ysr@777 | 1384 | #endif // SERIALGC |
ysr@777 | 1385 | //////////////////////////////////////////////////////////////////////// |
ysr@777 | 1386 | |
duke@435 | 1387 | void LIRGenerator::CardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
duke@435 | 1388 | |
ysr@777 | 1389 | assert(sizeof(*((CardTableModRefBS*)_bs)->byte_map_base) == sizeof(jbyte), "adjust this code"); |
ysr@777 | 1390 | LIR_Const* card_table_base = new LIR_Const(((CardTableModRefBS*)_bs)->byte_map_base); |
duke@435 | 1391 | if (addr->is_address()) { |
duke@435 | 1392 | LIR_Address* address = addr->as_address_ptr(); |
duke@435 | 1393 | LIR_Opr ptr = new_register(T_OBJECT); |
duke@435 | 1394 | if (!address->index()->is_valid() && address->disp() == 0) { |
duke@435 | 1395 | __ move(address->base(), ptr); |
duke@435 | 1396 | } else { |
duke@435 | 1397 | assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); |
duke@435 | 1398 | __ leal(addr, ptr); |
duke@435 | 1399 | } |
duke@435 | 1400 | addr = ptr; |
duke@435 | 1401 | } |
duke@435 | 1402 | assert(addr->is_register(), "must be a register at this point"); |
duke@435 | 1403 | |
duke@435 | 1404 | LIR_Opr tmp = new_pointer_register(); |
duke@435 | 1405 | if (TwoOperandLIRForm) { |
duke@435 | 1406 | __ move(addr, tmp); |
duke@435 | 1407 | __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp); |
duke@435 | 1408 | } else { |
duke@435 | 1409 | __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp); |
duke@435 | 1410 | } |
duke@435 | 1411 | if (can_inline_as_constant(card_table_base)) { |
duke@435 | 1412 | __ move(LIR_OprFact::intConst(0), |
duke@435 | 1413 | new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE)); |
duke@435 | 1414 | } else { |
duke@435 | 1415 | __ move(LIR_OprFact::intConst(0), |
duke@435 | 1416 | new LIR_Address(tmp, load_constant(card_table_base), |
duke@435 | 1417 | T_BYTE)); |
duke@435 | 1418 | } |
duke@435 | 1419 | } |
duke@435 | 1420 | |
duke@435 | 1421 | |
duke@435 | 1422 | //------------------------field access-------------------------------------- |
duke@435 | 1423 | |
duke@435 | 1424 | // Comment copied form templateTable_i486.cpp |
duke@435 | 1425 | // ---------------------------------------------------------------------------- |
duke@435 | 1426 | // Volatile variables demand their effects be made known to all CPU's in |
duke@435 | 1427 | // order. Store buffers on most chips allow reads & writes to reorder; the |
duke@435 | 1428 | // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of |
duke@435 | 1429 | // memory barrier (i.e., it's not sufficient that the interpreter does not |
duke@435 | 1430 | // reorder volatile references, the hardware also must not reorder them). |
duke@435 | 1431 | // |
duke@435 | 1432 | // According to the new Java Memory Model (JMM): |
duke@435 | 1433 | // (1) All volatiles are serialized wrt to each other. |
duke@435 | 1434 | // ALSO reads & writes act as aquire & release, so: |
duke@435 | 1435 | // (2) A read cannot let unrelated NON-volatile memory refs that happen after |
duke@435 | 1436 | // the read float up to before the read. It's OK for non-volatile memory refs |
duke@435 | 1437 | // that happen before the volatile read to float down below it. |
duke@435 | 1438 | // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs |
duke@435 | 1439 | // that happen BEFORE the write float down to after the write. It's OK for |
duke@435 | 1440 | // non-volatile memory refs that happen after the volatile write to float up |
duke@435 | 1441 | // before it. |
duke@435 | 1442 | // |
duke@435 | 1443 | // We only put in barriers around volatile refs (they are expensive), not |
duke@435 | 1444 | // _between_ memory refs (that would require us to track the flavor of the |
duke@435 | 1445 | // previous memory refs). Requirements (2) and (3) require some barriers |
duke@435 | 1446 | // before volatile stores and after volatile loads. These nearly cover |
duke@435 | 1447 | // requirement (1) but miss the volatile-store-volatile-load case. This final |
duke@435 | 1448 | // case is placed after volatile-stores although it could just as well go |
duke@435 | 1449 | // before volatile-loads. |
duke@435 | 1450 | |
duke@435 | 1451 | |
duke@435 | 1452 | void LIRGenerator::do_StoreField(StoreField* x) { |
duke@435 | 1453 | bool needs_patching = x->needs_patching(); |
duke@435 | 1454 | bool is_volatile = x->field()->is_volatile(); |
duke@435 | 1455 | BasicType field_type = x->field_type(); |
duke@435 | 1456 | bool is_oop = (field_type == T_ARRAY || field_type == T_OBJECT); |
duke@435 | 1457 | |
duke@435 | 1458 | CodeEmitInfo* info = NULL; |
duke@435 | 1459 | if (needs_patching) { |
duke@435 | 1460 | assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); |
duke@435 | 1461 | info = state_for(x, x->state_before()); |
duke@435 | 1462 | } else if (x->needs_null_check()) { |
duke@435 | 1463 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1464 | if (nc == NULL) { |
duke@435 | 1465 | info = state_for(x, x->lock_stack()); |
duke@435 | 1466 | } else { |
duke@435 | 1467 | info = state_for(nc); |
duke@435 | 1468 | } |
duke@435 | 1469 | } |
duke@435 | 1470 | |
duke@435 | 1471 | |
duke@435 | 1472 | LIRItem object(x->obj(), this); |
duke@435 | 1473 | LIRItem value(x->value(), this); |
duke@435 | 1474 | |
duke@435 | 1475 | object.load_item(); |
duke@435 | 1476 | |
duke@435 | 1477 | if (is_volatile || needs_patching) { |
duke@435 | 1478 | // load item if field is volatile (fewer special cases for volatiles) |
duke@435 | 1479 | // load item if field not initialized |
duke@435 | 1480 | // load item if field not constant |
duke@435 | 1481 | // because of code patching we cannot inline constants |
duke@435 | 1482 | if (field_type == T_BYTE || field_type == T_BOOLEAN) { |
duke@435 | 1483 | value.load_byte_item(); |
duke@435 | 1484 | } else { |
duke@435 | 1485 | value.load_item(); |
duke@435 | 1486 | } |
duke@435 | 1487 | } else { |
duke@435 | 1488 | value.load_for_store(field_type); |
duke@435 | 1489 | } |
duke@435 | 1490 | |
duke@435 | 1491 | set_no_result(x); |
duke@435 | 1492 | |
duke@435 | 1493 | if (PrintNotLoaded && needs_patching) { |
duke@435 | 1494 | tty->print_cr(" ###class not loaded at store_%s bci %d", |
duke@435 | 1495 | x->is_static() ? "static" : "field", x->bci()); |
duke@435 | 1496 | } |
duke@435 | 1497 | |
duke@435 | 1498 | if (x->needs_null_check() && |
duke@435 | 1499 | (needs_patching || |
duke@435 | 1500 | MacroAssembler::needs_explicit_null_check(x->offset()))) { |
duke@435 | 1501 | // emit an explicit null check because the offset is too large |
duke@435 | 1502 | __ null_check(object.result(), new CodeEmitInfo(info)); |
duke@435 | 1503 | } |
duke@435 | 1504 | |
duke@435 | 1505 | LIR_Address* address; |
duke@435 | 1506 | if (needs_patching) { |
duke@435 | 1507 | // we need to patch the offset in the instruction so don't allow |
duke@435 | 1508 | // generate_address to try to be smart about emitting the -1. |
duke@435 | 1509 | // Otherwise the patching code won't know how to find the |
duke@435 | 1510 | // instruction to patch. |
duke@435 | 1511 | address = new LIR_Address(object.result(), max_jint, field_type); |
duke@435 | 1512 | } else { |
duke@435 | 1513 | address = generate_address(object.result(), x->offset(), field_type); |
duke@435 | 1514 | } |
duke@435 | 1515 | |
duke@435 | 1516 | if (is_volatile && os::is_MP()) { |
duke@435 | 1517 | __ membar_release(); |
duke@435 | 1518 | } |
duke@435 | 1519 | |
ysr@777 | 1520 | if (is_oop) { |
ysr@777 | 1521 | // Do the pre-write barrier, if any. |
ysr@777 | 1522 | pre_barrier(LIR_OprFact::address(address), |
ysr@777 | 1523 | needs_patching, |
ysr@777 | 1524 | (info ? new CodeEmitInfo(info) : NULL)); |
ysr@777 | 1525 | } |
ysr@777 | 1526 | |
duke@435 | 1527 | if (is_volatile) { |
duke@435 | 1528 | assert(!needs_patching && x->is_loaded(), |
duke@435 | 1529 | "how do we know it's volatile if it's not loaded"); |
duke@435 | 1530 | volatile_field_store(value.result(), address, info); |
duke@435 | 1531 | } else { |
duke@435 | 1532 | LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; |
duke@435 | 1533 | __ store(value.result(), address, info, patch_code); |
duke@435 | 1534 | } |
duke@435 | 1535 | |
duke@435 | 1536 | if (is_oop) { |
never@1254 | 1537 | // Store to object so mark the card of the header |
duke@435 | 1538 | post_barrier(object.result(), value.result()); |
duke@435 | 1539 | } |
duke@435 | 1540 | |
duke@435 | 1541 | if (is_volatile && os::is_MP()) { |
duke@435 | 1542 | __ membar(); |
duke@435 | 1543 | } |
duke@435 | 1544 | } |
duke@435 | 1545 | |
duke@435 | 1546 | |
duke@435 | 1547 | void LIRGenerator::do_LoadField(LoadField* x) { |
duke@435 | 1548 | bool needs_patching = x->needs_patching(); |
duke@435 | 1549 | bool is_volatile = x->field()->is_volatile(); |
duke@435 | 1550 | BasicType field_type = x->field_type(); |
duke@435 | 1551 | |
duke@435 | 1552 | CodeEmitInfo* info = NULL; |
duke@435 | 1553 | if (needs_patching) { |
duke@435 | 1554 | assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); |
duke@435 | 1555 | info = state_for(x, x->state_before()); |
duke@435 | 1556 | } else if (x->needs_null_check()) { |
duke@435 | 1557 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1558 | if (nc == NULL) { |
duke@435 | 1559 | info = state_for(x, x->lock_stack()); |
duke@435 | 1560 | } else { |
duke@435 | 1561 | info = state_for(nc); |
duke@435 | 1562 | } |
duke@435 | 1563 | } |
duke@435 | 1564 | |
duke@435 | 1565 | LIRItem object(x->obj(), this); |
duke@435 | 1566 | |
duke@435 | 1567 | object.load_item(); |
duke@435 | 1568 | |
duke@435 | 1569 | if (PrintNotLoaded && needs_patching) { |
duke@435 | 1570 | tty->print_cr(" ###class not loaded at load_%s bci %d", |
duke@435 | 1571 | x->is_static() ? "static" : "field", x->bci()); |
duke@435 | 1572 | } |
duke@435 | 1573 | |
duke@435 | 1574 | if (x->needs_null_check() && |
duke@435 | 1575 | (needs_patching || |
duke@435 | 1576 | MacroAssembler::needs_explicit_null_check(x->offset()))) { |
duke@435 | 1577 | // emit an explicit null check because the offset is too large |
duke@435 | 1578 | __ null_check(object.result(), new CodeEmitInfo(info)); |
duke@435 | 1579 | } |
duke@435 | 1580 | |
duke@435 | 1581 | LIR_Opr reg = rlock_result(x, field_type); |
duke@435 | 1582 | LIR_Address* address; |
duke@435 | 1583 | if (needs_patching) { |
duke@435 | 1584 | // we need to patch the offset in the instruction so don't allow |
duke@435 | 1585 | // generate_address to try to be smart about emitting the -1. |
duke@435 | 1586 | // Otherwise the patching code won't know how to find the |
duke@435 | 1587 | // instruction to patch. |
duke@435 | 1588 | address = new LIR_Address(object.result(), max_jint, field_type); |
duke@435 | 1589 | } else { |
duke@435 | 1590 | address = generate_address(object.result(), x->offset(), field_type); |
duke@435 | 1591 | } |
duke@435 | 1592 | |
duke@435 | 1593 | if (is_volatile) { |
duke@435 | 1594 | assert(!needs_patching && x->is_loaded(), |
duke@435 | 1595 | "how do we know it's volatile if it's not loaded"); |
duke@435 | 1596 | volatile_field_load(address, reg, info); |
duke@435 | 1597 | } else { |
duke@435 | 1598 | LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; |
duke@435 | 1599 | __ load(address, reg, info, patch_code); |
duke@435 | 1600 | } |
duke@435 | 1601 | |
duke@435 | 1602 | if (is_volatile && os::is_MP()) { |
duke@435 | 1603 | __ membar_acquire(); |
duke@435 | 1604 | } |
duke@435 | 1605 | } |
duke@435 | 1606 | |
duke@435 | 1607 | |
duke@435 | 1608 | //------------------------java.nio.Buffer.checkIndex------------------------ |
duke@435 | 1609 | |
duke@435 | 1610 | // int java.nio.Buffer.checkIndex(int) |
duke@435 | 1611 | void LIRGenerator::do_NIOCheckIndex(Intrinsic* x) { |
duke@435 | 1612 | // NOTE: by the time we are in checkIndex() we are guaranteed that |
duke@435 | 1613 | // the buffer is non-null (because checkIndex is package-private and |
duke@435 | 1614 | // only called from within other methods in the buffer). |
duke@435 | 1615 | assert(x->number_of_arguments() == 2, "wrong type"); |
duke@435 | 1616 | LIRItem buf (x->argument_at(0), this); |
duke@435 | 1617 | LIRItem index(x->argument_at(1), this); |
duke@435 | 1618 | buf.load_item(); |
duke@435 | 1619 | index.load_item(); |
duke@435 | 1620 | |
duke@435 | 1621 | LIR_Opr result = rlock_result(x); |
duke@435 | 1622 | if (GenerateRangeChecks) { |
duke@435 | 1623 | CodeEmitInfo* info = state_for(x); |
duke@435 | 1624 | CodeStub* stub = new RangeCheckStub(info, index.result(), true); |
duke@435 | 1625 | if (index.result()->is_constant()) { |
duke@435 | 1626 | cmp_mem_int(lir_cond_belowEqual, buf.result(), java_nio_Buffer::limit_offset(), index.result()->as_jint(), info); |
duke@435 | 1627 | __ branch(lir_cond_belowEqual, T_INT, stub); |
duke@435 | 1628 | } else { |
duke@435 | 1629 | cmp_reg_mem(lir_cond_aboveEqual, index.result(), buf.result(), |
duke@435 | 1630 | java_nio_Buffer::limit_offset(), T_INT, info); |
duke@435 | 1631 | __ branch(lir_cond_aboveEqual, T_INT, stub); |
duke@435 | 1632 | } |
duke@435 | 1633 | __ move(index.result(), result); |
duke@435 | 1634 | } else { |
duke@435 | 1635 | // Just load the index into the result register |
duke@435 | 1636 | __ move(index.result(), result); |
duke@435 | 1637 | } |
duke@435 | 1638 | } |
duke@435 | 1639 | |
duke@435 | 1640 | |
duke@435 | 1641 | //------------------------array access-------------------------------------- |
duke@435 | 1642 | |
duke@435 | 1643 | |
duke@435 | 1644 | void LIRGenerator::do_ArrayLength(ArrayLength* x) { |
duke@435 | 1645 | LIRItem array(x->array(), this); |
duke@435 | 1646 | array.load_item(); |
duke@435 | 1647 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1648 | |
duke@435 | 1649 | CodeEmitInfo* info = NULL; |
duke@435 | 1650 | if (x->needs_null_check()) { |
duke@435 | 1651 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1652 | if (nc == NULL) { |
duke@435 | 1653 | info = state_for(x); |
duke@435 | 1654 | } else { |
duke@435 | 1655 | info = state_for(nc); |
duke@435 | 1656 | } |
duke@435 | 1657 | } |
duke@435 | 1658 | __ load(new LIR_Address(array.result(), arrayOopDesc::length_offset_in_bytes(), T_INT), reg, info, lir_patch_none); |
duke@435 | 1659 | } |
duke@435 | 1660 | |
duke@435 | 1661 | |
duke@435 | 1662 | void LIRGenerator::do_LoadIndexed(LoadIndexed* x) { |
duke@435 | 1663 | bool use_length = x->length() != NULL; |
duke@435 | 1664 | LIRItem array(x->array(), this); |
duke@435 | 1665 | LIRItem index(x->index(), this); |
duke@435 | 1666 | LIRItem length(this); |
duke@435 | 1667 | bool needs_range_check = true; |
duke@435 | 1668 | |
duke@435 | 1669 | if (use_length) { |
duke@435 | 1670 | needs_range_check = x->compute_needs_range_check(); |
duke@435 | 1671 | if (needs_range_check) { |
duke@435 | 1672 | length.set_instruction(x->length()); |
duke@435 | 1673 | length.load_item(); |
duke@435 | 1674 | } |
duke@435 | 1675 | } |
duke@435 | 1676 | |
duke@435 | 1677 | array.load_item(); |
duke@435 | 1678 | if (index.is_constant() && can_inline_as_constant(x->index())) { |
duke@435 | 1679 | // let it be a constant |
duke@435 | 1680 | index.dont_load_item(); |
duke@435 | 1681 | } else { |
duke@435 | 1682 | index.load_item(); |
duke@435 | 1683 | } |
duke@435 | 1684 | |
duke@435 | 1685 | CodeEmitInfo* range_check_info = state_for(x); |
duke@435 | 1686 | CodeEmitInfo* null_check_info = NULL; |
duke@435 | 1687 | if (x->needs_null_check()) { |
duke@435 | 1688 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1689 | if (nc != NULL) { |
duke@435 | 1690 | null_check_info = state_for(nc); |
duke@435 | 1691 | } else { |
duke@435 | 1692 | null_check_info = range_check_info; |
duke@435 | 1693 | } |
duke@435 | 1694 | } |
duke@435 | 1695 | |
duke@435 | 1696 | // emit array address setup early so it schedules better |
duke@435 | 1697 | LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), false); |
duke@435 | 1698 | |
duke@435 | 1699 | if (GenerateRangeChecks && needs_range_check) { |
duke@435 | 1700 | if (use_length) { |
duke@435 | 1701 | // TODO: use a (modified) version of array_range_check that does not require a |
duke@435 | 1702 | // constant length to be loaded to a register |
duke@435 | 1703 | __ cmp(lir_cond_belowEqual, length.result(), index.result()); |
duke@435 | 1704 | __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); |
duke@435 | 1705 | } else { |
duke@435 | 1706 | array_range_check(array.result(), index.result(), null_check_info, range_check_info); |
duke@435 | 1707 | // The range check performs the null check, so clear it out for the load |
duke@435 | 1708 | null_check_info = NULL; |
duke@435 | 1709 | } |
duke@435 | 1710 | } |
duke@435 | 1711 | |
duke@435 | 1712 | __ move(array_addr, rlock_result(x, x->elt_type()), null_check_info); |
duke@435 | 1713 | } |
duke@435 | 1714 | |
duke@435 | 1715 | |
duke@435 | 1716 | void LIRGenerator::do_NullCheck(NullCheck* x) { |
duke@435 | 1717 | if (x->can_trap()) { |
duke@435 | 1718 | LIRItem value(x->obj(), this); |
duke@435 | 1719 | value.load_item(); |
duke@435 | 1720 | CodeEmitInfo* info = state_for(x); |
duke@435 | 1721 | __ null_check(value.result(), info); |
duke@435 | 1722 | } |
duke@435 | 1723 | } |
duke@435 | 1724 | |
duke@435 | 1725 | |
duke@435 | 1726 | void LIRGenerator::do_Throw(Throw* x) { |
duke@435 | 1727 | LIRItem exception(x->exception(), this); |
duke@435 | 1728 | exception.load_item(); |
duke@435 | 1729 | set_no_result(x); |
duke@435 | 1730 | LIR_Opr exception_opr = exception.result(); |
duke@435 | 1731 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 1732 | |
duke@435 | 1733 | #ifndef PRODUCT |
duke@435 | 1734 | if (PrintC1Statistics) { |
duke@435 | 1735 | increment_counter(Runtime1::throw_count_address()); |
duke@435 | 1736 | } |
duke@435 | 1737 | #endif |
duke@435 | 1738 | |
duke@435 | 1739 | // check if the instruction has an xhandler in any of the nested scopes |
duke@435 | 1740 | bool unwind = false; |
duke@435 | 1741 | if (info->exception_handlers()->length() == 0) { |
duke@435 | 1742 | // this throw is not inside an xhandler |
duke@435 | 1743 | unwind = true; |
duke@435 | 1744 | } else { |
duke@435 | 1745 | // get some idea of the throw type |
duke@435 | 1746 | bool type_is_exact = true; |
duke@435 | 1747 | ciType* throw_type = x->exception()->exact_type(); |
duke@435 | 1748 | if (throw_type == NULL) { |
duke@435 | 1749 | type_is_exact = false; |
duke@435 | 1750 | throw_type = x->exception()->declared_type(); |
duke@435 | 1751 | } |
duke@435 | 1752 | if (throw_type != NULL && throw_type->is_instance_klass()) { |
duke@435 | 1753 | ciInstanceKlass* throw_klass = (ciInstanceKlass*)throw_type; |
duke@435 | 1754 | unwind = !x->exception_handlers()->could_catch(throw_klass, type_is_exact); |
duke@435 | 1755 | } |
duke@435 | 1756 | } |
duke@435 | 1757 | |
duke@435 | 1758 | // do null check before moving exception oop into fixed register |
duke@435 | 1759 | // to avoid a fixed interval with an oop during the null check. |
duke@435 | 1760 | // Use a copy of the CodeEmitInfo because debug information is |
duke@435 | 1761 | // different for null_check and throw. |
duke@435 | 1762 | if (GenerateCompilerNullChecks && |
duke@435 | 1763 | (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) { |
duke@435 | 1764 | // if the exception object wasn't created using new then it might be null. |
duke@435 | 1765 | __ null_check(exception_opr, new CodeEmitInfo(info, true)); |
duke@435 | 1766 | } |
duke@435 | 1767 | |
kvn@1215 | 1768 | if (compilation()->env()->jvmti_can_post_exceptions() && |
duke@435 | 1769 | !block()->is_set(BlockBegin::default_exception_handler_flag)) { |
duke@435 | 1770 | // we need to go through the exception lookup path to get JVMTI |
duke@435 | 1771 | // notification done |
duke@435 | 1772 | unwind = false; |
duke@435 | 1773 | } |
duke@435 | 1774 | |
duke@435 | 1775 | assert(!block()->is_set(BlockBegin::default_exception_handler_flag) || unwind, |
duke@435 | 1776 | "should be no more handlers to dispatch to"); |
duke@435 | 1777 | |
kvn@1215 | 1778 | if (compilation()->env()->dtrace_method_probes() && |
duke@435 | 1779 | block()->is_set(BlockBegin::default_exception_handler_flag)) { |
duke@435 | 1780 | // notify that this frame is unwinding |
duke@435 | 1781 | BasicTypeList signature; |
duke@435 | 1782 | signature.append(T_INT); // thread |
duke@435 | 1783 | signature.append(T_OBJECT); // methodOop |
duke@435 | 1784 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 1785 | args->append(getThreadPointer()); |
duke@435 | 1786 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 1787 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 1788 | args->append(meth); |
duke@435 | 1789 | call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL); |
duke@435 | 1790 | } |
duke@435 | 1791 | |
duke@435 | 1792 | // move exception oop into fixed register |
duke@435 | 1793 | __ move(exception_opr, exceptionOopOpr()); |
duke@435 | 1794 | |
duke@435 | 1795 | if (unwind) { |
duke@435 | 1796 | __ unwind_exception(LIR_OprFact::illegalOpr, exceptionOopOpr(), info); |
duke@435 | 1797 | } else { |
duke@435 | 1798 | __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info); |
duke@435 | 1799 | } |
duke@435 | 1800 | } |
duke@435 | 1801 | |
duke@435 | 1802 | |
duke@435 | 1803 | void LIRGenerator::do_RoundFP(RoundFP* x) { |
duke@435 | 1804 | LIRItem input(x->input(), this); |
duke@435 | 1805 | input.load_item(); |
duke@435 | 1806 | LIR_Opr input_opr = input.result(); |
duke@435 | 1807 | assert(input_opr->is_register(), "why round if value is not in a register?"); |
duke@435 | 1808 | assert(input_opr->is_single_fpu() || input_opr->is_double_fpu(), "input should be floating-point value"); |
duke@435 | 1809 | if (input_opr->is_single_fpu()) { |
duke@435 | 1810 | set_result(x, round_item(input_opr)); // This code path not currently taken |
duke@435 | 1811 | } else { |
duke@435 | 1812 | LIR_Opr result = new_register(T_DOUBLE); |
duke@435 | 1813 | set_vreg_flag(result, must_start_in_memory); |
duke@435 | 1814 | __ roundfp(input_opr, LIR_OprFact::illegalOpr, result); |
duke@435 | 1815 | set_result(x, result); |
duke@435 | 1816 | } |
duke@435 | 1817 | } |
duke@435 | 1818 | |
duke@435 | 1819 | void LIRGenerator::do_UnsafeGetRaw(UnsafeGetRaw* x) { |
duke@435 | 1820 | LIRItem base(x->base(), this); |
duke@435 | 1821 | LIRItem idx(this); |
duke@435 | 1822 | |
duke@435 | 1823 | base.load_item(); |
duke@435 | 1824 | if (x->has_index()) { |
duke@435 | 1825 | idx.set_instruction(x->index()); |
duke@435 | 1826 | idx.load_nonconstant(); |
duke@435 | 1827 | } |
duke@435 | 1828 | |
duke@435 | 1829 | LIR_Opr reg = rlock_result(x, x->basic_type()); |
duke@435 | 1830 | |
duke@435 | 1831 | int log2_scale = 0; |
duke@435 | 1832 | if (x->has_index()) { |
duke@435 | 1833 | assert(x->index()->type()->tag() == intTag, "should not find non-int index"); |
duke@435 | 1834 | log2_scale = x->log2_scale(); |
duke@435 | 1835 | } |
duke@435 | 1836 | |
duke@435 | 1837 | assert(!x->has_index() || idx.value() == x->index(), "should match"); |
duke@435 | 1838 | |
duke@435 | 1839 | LIR_Opr base_op = base.result(); |
duke@435 | 1840 | #ifndef _LP64 |
duke@435 | 1841 | if (x->base()->type()->tag() == longTag) { |
duke@435 | 1842 | base_op = new_register(T_INT); |
duke@435 | 1843 | __ convert(Bytecodes::_l2i, base.result(), base_op); |
duke@435 | 1844 | } else { |
duke@435 | 1845 | assert(x->base()->type()->tag() == intTag, "must be"); |
duke@435 | 1846 | } |
duke@435 | 1847 | #endif |
duke@435 | 1848 | |
duke@435 | 1849 | BasicType dst_type = x->basic_type(); |
duke@435 | 1850 | LIR_Opr index_op = idx.result(); |
duke@435 | 1851 | |
duke@435 | 1852 | LIR_Address* addr; |
duke@435 | 1853 | if (index_op->is_constant()) { |
duke@435 | 1854 | assert(log2_scale == 0, "must not have a scale"); |
duke@435 | 1855 | addr = new LIR_Address(base_op, index_op->as_jint(), dst_type); |
duke@435 | 1856 | } else { |
never@739 | 1857 | #ifdef X86 |
duke@435 | 1858 | addr = new LIR_Address(base_op, index_op, LIR_Address::Scale(log2_scale), 0, dst_type); |
duke@435 | 1859 | #else |
duke@435 | 1860 | if (index_op->is_illegal() || log2_scale == 0) { |
duke@435 | 1861 | addr = new LIR_Address(base_op, index_op, dst_type); |
duke@435 | 1862 | } else { |
duke@435 | 1863 | LIR_Opr tmp = new_register(T_INT); |
duke@435 | 1864 | __ shift_left(index_op, log2_scale, tmp); |
duke@435 | 1865 | addr = new LIR_Address(base_op, tmp, dst_type); |
duke@435 | 1866 | } |
duke@435 | 1867 | #endif |
duke@435 | 1868 | } |
duke@435 | 1869 | |
duke@435 | 1870 | if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) { |
duke@435 | 1871 | __ unaligned_move(addr, reg); |
duke@435 | 1872 | } else { |
duke@435 | 1873 | __ move(addr, reg); |
duke@435 | 1874 | } |
duke@435 | 1875 | } |
duke@435 | 1876 | |
duke@435 | 1877 | |
duke@435 | 1878 | void LIRGenerator::do_UnsafePutRaw(UnsafePutRaw* x) { |
duke@435 | 1879 | int log2_scale = 0; |
duke@435 | 1880 | BasicType type = x->basic_type(); |
duke@435 | 1881 | |
duke@435 | 1882 | if (x->has_index()) { |
duke@435 | 1883 | assert(x->index()->type()->tag() == intTag, "should not find non-int index"); |
duke@435 | 1884 | log2_scale = x->log2_scale(); |
duke@435 | 1885 | } |
duke@435 | 1886 | |
duke@435 | 1887 | LIRItem base(x->base(), this); |
duke@435 | 1888 | LIRItem value(x->value(), this); |
duke@435 | 1889 | LIRItem idx(this); |
duke@435 | 1890 | |
duke@435 | 1891 | base.load_item(); |
duke@435 | 1892 | if (x->has_index()) { |
duke@435 | 1893 | idx.set_instruction(x->index()); |
duke@435 | 1894 | idx.load_item(); |
duke@435 | 1895 | } |
duke@435 | 1896 | |
duke@435 | 1897 | if (type == T_BYTE || type == T_BOOLEAN) { |
duke@435 | 1898 | value.load_byte_item(); |
duke@435 | 1899 | } else { |
duke@435 | 1900 | value.load_item(); |
duke@435 | 1901 | } |
duke@435 | 1902 | |
duke@435 | 1903 | set_no_result(x); |
duke@435 | 1904 | |
duke@435 | 1905 | LIR_Opr base_op = base.result(); |
duke@435 | 1906 | #ifndef _LP64 |
duke@435 | 1907 | if (x->base()->type()->tag() == longTag) { |
duke@435 | 1908 | base_op = new_register(T_INT); |
duke@435 | 1909 | __ convert(Bytecodes::_l2i, base.result(), base_op); |
duke@435 | 1910 | } else { |
duke@435 | 1911 | assert(x->base()->type()->tag() == intTag, "must be"); |
duke@435 | 1912 | } |
duke@435 | 1913 | #endif |
duke@435 | 1914 | |
duke@435 | 1915 | LIR_Opr index_op = idx.result(); |
duke@435 | 1916 | if (log2_scale != 0) { |
duke@435 | 1917 | // temporary fix (platform dependent code without shift on Intel would be better) |
duke@435 | 1918 | index_op = new_register(T_INT); |
duke@435 | 1919 | __ move(idx.result(), index_op); |
duke@435 | 1920 | __ shift_left(index_op, log2_scale, index_op); |
duke@435 | 1921 | } |
duke@435 | 1922 | |
duke@435 | 1923 | LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type()); |
duke@435 | 1924 | __ move(value.result(), addr); |
duke@435 | 1925 | } |
duke@435 | 1926 | |
duke@435 | 1927 | |
duke@435 | 1928 | void LIRGenerator::do_UnsafeGetObject(UnsafeGetObject* x) { |
duke@435 | 1929 | BasicType type = x->basic_type(); |
duke@435 | 1930 | LIRItem src(x->object(), this); |
duke@435 | 1931 | LIRItem off(x->offset(), this); |
duke@435 | 1932 | |
duke@435 | 1933 | off.load_item(); |
duke@435 | 1934 | src.load_item(); |
duke@435 | 1935 | |
duke@435 | 1936 | LIR_Opr reg = reg = rlock_result(x, x->basic_type()); |
duke@435 | 1937 | |
duke@435 | 1938 | if (x->is_volatile() && os::is_MP()) __ membar_acquire(); |
duke@435 | 1939 | get_Object_unsafe(reg, src.result(), off.result(), type, x->is_volatile()); |
duke@435 | 1940 | if (x->is_volatile() && os::is_MP()) __ membar(); |
duke@435 | 1941 | } |
duke@435 | 1942 | |
duke@435 | 1943 | |
duke@435 | 1944 | void LIRGenerator::do_UnsafePutObject(UnsafePutObject* x) { |
duke@435 | 1945 | BasicType type = x->basic_type(); |
duke@435 | 1946 | LIRItem src(x->object(), this); |
duke@435 | 1947 | LIRItem off(x->offset(), this); |
duke@435 | 1948 | LIRItem data(x->value(), this); |
duke@435 | 1949 | |
duke@435 | 1950 | src.load_item(); |
duke@435 | 1951 | if (type == T_BOOLEAN || type == T_BYTE) { |
duke@435 | 1952 | data.load_byte_item(); |
duke@435 | 1953 | } else { |
duke@435 | 1954 | data.load_item(); |
duke@435 | 1955 | } |
duke@435 | 1956 | off.load_item(); |
duke@435 | 1957 | |
duke@435 | 1958 | set_no_result(x); |
duke@435 | 1959 | |
duke@435 | 1960 | if (x->is_volatile() && os::is_MP()) __ membar_release(); |
duke@435 | 1961 | put_Object_unsafe(src.result(), off.result(), data.result(), type, x->is_volatile()); |
duke@435 | 1962 | } |
duke@435 | 1963 | |
duke@435 | 1964 | |
duke@435 | 1965 | void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) { |
duke@435 | 1966 | LIRItem src(x->object(), this); |
duke@435 | 1967 | LIRItem off(x->offset(), this); |
duke@435 | 1968 | |
duke@435 | 1969 | src.load_item(); |
duke@435 | 1970 | if (off.is_constant() && can_inline_as_constant(x->offset())) { |
duke@435 | 1971 | // let it be a constant |
duke@435 | 1972 | off.dont_load_item(); |
duke@435 | 1973 | } else { |
duke@435 | 1974 | off.load_item(); |
duke@435 | 1975 | } |
duke@435 | 1976 | |
duke@435 | 1977 | set_no_result(x); |
duke@435 | 1978 | |
duke@435 | 1979 | LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE); |
duke@435 | 1980 | __ prefetch(addr, is_store); |
duke@435 | 1981 | } |
duke@435 | 1982 | |
duke@435 | 1983 | |
duke@435 | 1984 | void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) { |
duke@435 | 1985 | do_UnsafePrefetch(x, false); |
duke@435 | 1986 | } |
duke@435 | 1987 | |
duke@435 | 1988 | |
duke@435 | 1989 | void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { |
duke@435 | 1990 | do_UnsafePrefetch(x, true); |
duke@435 | 1991 | } |
duke@435 | 1992 | |
duke@435 | 1993 | |
duke@435 | 1994 | void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) { |
duke@435 | 1995 | int lng = x->length(); |
duke@435 | 1996 | |
duke@435 | 1997 | for (int i = 0; i < lng; i++) { |
duke@435 | 1998 | SwitchRange* one_range = x->at(i); |
duke@435 | 1999 | int low_key = one_range->low_key(); |
duke@435 | 2000 | int high_key = one_range->high_key(); |
duke@435 | 2001 | BlockBegin* dest = one_range->sux(); |
duke@435 | 2002 | if (low_key == high_key) { |
duke@435 | 2003 | __ cmp(lir_cond_equal, value, low_key); |
duke@435 | 2004 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2005 | } else if (high_key - low_key == 1) { |
duke@435 | 2006 | __ cmp(lir_cond_equal, value, low_key); |
duke@435 | 2007 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2008 | __ cmp(lir_cond_equal, value, high_key); |
duke@435 | 2009 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2010 | } else { |
duke@435 | 2011 | LabelObj* L = new LabelObj(); |
duke@435 | 2012 | __ cmp(lir_cond_less, value, low_key); |
duke@435 | 2013 | __ branch(lir_cond_less, L->label()); |
duke@435 | 2014 | __ cmp(lir_cond_lessEqual, value, high_key); |
duke@435 | 2015 | __ branch(lir_cond_lessEqual, T_INT, dest); |
duke@435 | 2016 | __ branch_destination(L->label()); |
duke@435 | 2017 | } |
duke@435 | 2018 | } |
duke@435 | 2019 | __ jump(default_sux); |
duke@435 | 2020 | } |
duke@435 | 2021 | |
duke@435 | 2022 | |
duke@435 | 2023 | SwitchRangeArray* LIRGenerator::create_lookup_ranges(TableSwitch* x) { |
duke@435 | 2024 | SwitchRangeList* res = new SwitchRangeList(); |
duke@435 | 2025 | int len = x->length(); |
duke@435 | 2026 | if (len > 0) { |
duke@435 | 2027 | BlockBegin* sux = x->sux_at(0); |
duke@435 | 2028 | int key = x->lo_key(); |
duke@435 | 2029 | BlockBegin* default_sux = x->default_sux(); |
duke@435 | 2030 | SwitchRange* range = new SwitchRange(key, sux); |
duke@435 | 2031 | for (int i = 0; i < len; i++, key++) { |
duke@435 | 2032 | BlockBegin* new_sux = x->sux_at(i); |
duke@435 | 2033 | if (sux == new_sux) { |
duke@435 | 2034 | // still in same range |
duke@435 | 2035 | range->set_high_key(key); |
duke@435 | 2036 | } else { |
duke@435 | 2037 | // skip tests which explicitly dispatch to the default |
duke@435 | 2038 | if (sux != default_sux) { |
duke@435 | 2039 | res->append(range); |
duke@435 | 2040 | } |
duke@435 | 2041 | range = new SwitchRange(key, new_sux); |
duke@435 | 2042 | } |
duke@435 | 2043 | sux = new_sux; |
duke@435 | 2044 | } |
duke@435 | 2045 | if (res->length() == 0 || res->last() != range) res->append(range); |
duke@435 | 2046 | } |
duke@435 | 2047 | return res; |
duke@435 | 2048 | } |
duke@435 | 2049 | |
duke@435 | 2050 | |
duke@435 | 2051 | // we expect the keys to be sorted by increasing value |
duke@435 | 2052 | SwitchRangeArray* LIRGenerator::create_lookup_ranges(LookupSwitch* x) { |
duke@435 | 2053 | SwitchRangeList* res = new SwitchRangeList(); |
duke@435 | 2054 | int len = x->length(); |
duke@435 | 2055 | if (len > 0) { |
duke@435 | 2056 | BlockBegin* default_sux = x->default_sux(); |
duke@435 | 2057 | int key = x->key_at(0); |
duke@435 | 2058 | BlockBegin* sux = x->sux_at(0); |
duke@435 | 2059 | SwitchRange* range = new SwitchRange(key, sux); |
duke@435 | 2060 | for (int i = 1; i < len; i++) { |
duke@435 | 2061 | int new_key = x->key_at(i); |
duke@435 | 2062 | BlockBegin* new_sux = x->sux_at(i); |
duke@435 | 2063 | if (key+1 == new_key && sux == new_sux) { |
duke@435 | 2064 | // still in same range |
duke@435 | 2065 | range->set_high_key(new_key); |
duke@435 | 2066 | } else { |
duke@435 | 2067 | // skip tests which explicitly dispatch to the default |
duke@435 | 2068 | if (range->sux() != default_sux) { |
duke@435 | 2069 | res->append(range); |
duke@435 | 2070 | } |
duke@435 | 2071 | range = new SwitchRange(new_key, new_sux); |
duke@435 | 2072 | } |
duke@435 | 2073 | key = new_key; |
duke@435 | 2074 | sux = new_sux; |
duke@435 | 2075 | } |
duke@435 | 2076 | if (res->length() == 0 || res->last() != range) res->append(range); |
duke@435 | 2077 | } |
duke@435 | 2078 | return res; |
duke@435 | 2079 | } |
duke@435 | 2080 | |
duke@435 | 2081 | |
duke@435 | 2082 | void LIRGenerator::do_TableSwitch(TableSwitch* x) { |
duke@435 | 2083 | LIRItem tag(x->tag(), this); |
duke@435 | 2084 | tag.load_item(); |
duke@435 | 2085 | set_no_result(x); |
duke@435 | 2086 | |
duke@435 | 2087 | if (x->is_safepoint()) { |
duke@435 | 2088 | __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); |
duke@435 | 2089 | } |
duke@435 | 2090 | |
duke@435 | 2091 | // move values into phi locations |
duke@435 | 2092 | move_to_phi(x->state()); |
duke@435 | 2093 | |
duke@435 | 2094 | int lo_key = x->lo_key(); |
duke@435 | 2095 | int hi_key = x->hi_key(); |
duke@435 | 2096 | int len = x->length(); |
duke@435 | 2097 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 2098 | LIR_Opr value = tag.result(); |
duke@435 | 2099 | if (UseTableRanges) { |
duke@435 | 2100 | do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); |
duke@435 | 2101 | } else { |
duke@435 | 2102 | for (int i = 0; i < len; i++) { |
duke@435 | 2103 | __ cmp(lir_cond_equal, value, i + lo_key); |
duke@435 | 2104 | __ branch(lir_cond_equal, T_INT, x->sux_at(i)); |
duke@435 | 2105 | } |
duke@435 | 2106 | __ jump(x->default_sux()); |
duke@435 | 2107 | } |
duke@435 | 2108 | } |
duke@435 | 2109 | |
duke@435 | 2110 | |
duke@435 | 2111 | void LIRGenerator::do_LookupSwitch(LookupSwitch* x) { |
duke@435 | 2112 | LIRItem tag(x->tag(), this); |
duke@435 | 2113 | tag.load_item(); |
duke@435 | 2114 | set_no_result(x); |
duke@435 | 2115 | |
duke@435 | 2116 | if (x->is_safepoint()) { |
duke@435 | 2117 | __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); |
duke@435 | 2118 | } |
duke@435 | 2119 | |
duke@435 | 2120 | // move values into phi locations |
duke@435 | 2121 | move_to_phi(x->state()); |
duke@435 | 2122 | |
duke@435 | 2123 | LIR_Opr value = tag.result(); |
duke@435 | 2124 | if (UseTableRanges) { |
duke@435 | 2125 | do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); |
duke@435 | 2126 | } else { |
duke@435 | 2127 | int len = x->length(); |
duke@435 | 2128 | for (int i = 0; i < len; i++) { |
duke@435 | 2129 | __ cmp(lir_cond_equal, value, x->key_at(i)); |
duke@435 | 2130 | __ branch(lir_cond_equal, T_INT, x->sux_at(i)); |
duke@435 | 2131 | } |
duke@435 | 2132 | __ jump(x->default_sux()); |
duke@435 | 2133 | } |
duke@435 | 2134 | } |
duke@435 | 2135 | |
duke@435 | 2136 | |
duke@435 | 2137 | void LIRGenerator::do_Goto(Goto* x) { |
duke@435 | 2138 | set_no_result(x); |
duke@435 | 2139 | |
duke@435 | 2140 | if (block()->next()->as_OsrEntry()) { |
duke@435 | 2141 | // need to free up storage used for OSR entry point |
duke@435 | 2142 | LIR_Opr osrBuffer = block()->next()->operand(); |
duke@435 | 2143 | BasicTypeList signature; |
duke@435 | 2144 | signature.append(T_INT); |
duke@435 | 2145 | CallingConvention* cc = frame_map()->c_calling_convention(&signature); |
duke@435 | 2146 | __ move(osrBuffer, cc->args()->at(0)); |
duke@435 | 2147 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_end), |
duke@435 | 2148 | getThreadTemp(), LIR_OprFact::illegalOpr, cc->args()); |
duke@435 | 2149 | } |
duke@435 | 2150 | |
duke@435 | 2151 | if (x->is_safepoint()) { |
duke@435 | 2152 | ValueStack* state = x->state_before() ? x->state_before() : x->state(); |
duke@435 | 2153 | |
duke@435 | 2154 | // increment backedge counter if needed |
duke@435 | 2155 | increment_backedge_counter(state_for(x, state)); |
duke@435 | 2156 | |
duke@435 | 2157 | CodeEmitInfo* safepoint_info = state_for(x, state); |
duke@435 | 2158 | __ safepoint(safepoint_poll_register(), safepoint_info); |
duke@435 | 2159 | } |
duke@435 | 2160 | |
duke@435 | 2161 | // emit phi-instruction move after safepoint since this simplifies |
duke@435 | 2162 | // describing the state as the safepoint. |
duke@435 | 2163 | move_to_phi(x->state()); |
duke@435 | 2164 | |
duke@435 | 2165 | __ jump(x->default_sux()); |
duke@435 | 2166 | } |
duke@435 | 2167 | |
duke@435 | 2168 | |
duke@435 | 2169 | void LIRGenerator::do_Base(Base* x) { |
duke@435 | 2170 | __ std_entry(LIR_OprFact::illegalOpr); |
duke@435 | 2171 | // Emit moves from physical registers / stack slots to virtual registers |
duke@435 | 2172 | CallingConvention* args = compilation()->frame_map()->incoming_arguments(); |
duke@435 | 2173 | IRScope* irScope = compilation()->hir()->top_scope(); |
duke@435 | 2174 | int java_index = 0; |
duke@435 | 2175 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 2176 | LIR_Opr src = args->at(i); |
duke@435 | 2177 | assert(!src->is_illegal(), "check"); |
duke@435 | 2178 | BasicType t = src->type(); |
duke@435 | 2179 | |
duke@435 | 2180 | // Types which are smaller than int are passed as int, so |
duke@435 | 2181 | // correct the type which passed. |
duke@435 | 2182 | switch (t) { |
duke@435 | 2183 | case T_BYTE: |
duke@435 | 2184 | case T_BOOLEAN: |
duke@435 | 2185 | case T_SHORT: |
duke@435 | 2186 | case T_CHAR: |
duke@435 | 2187 | t = T_INT; |
duke@435 | 2188 | break; |
duke@435 | 2189 | } |
duke@435 | 2190 | |
duke@435 | 2191 | LIR_Opr dest = new_register(t); |
duke@435 | 2192 | __ move(src, dest); |
duke@435 | 2193 | |
duke@435 | 2194 | // Assign new location to Local instruction for this local |
duke@435 | 2195 | Local* local = x->state()->local_at(java_index)->as_Local(); |
duke@435 | 2196 | assert(local != NULL, "Locals for incoming arguments must have been created"); |
duke@435 | 2197 | assert(as_ValueType(t)->tag() == local->type()->tag(), "check"); |
duke@435 | 2198 | local->set_operand(dest); |
duke@435 | 2199 | _instruction_for_operand.at_put_grow(dest->vreg_number(), local, NULL); |
duke@435 | 2200 | java_index += type2size[t]; |
duke@435 | 2201 | } |
duke@435 | 2202 | |
kvn@1215 | 2203 | if (compilation()->env()->dtrace_method_probes()) { |
duke@435 | 2204 | BasicTypeList signature; |
duke@435 | 2205 | signature.append(T_INT); // thread |
duke@435 | 2206 | signature.append(T_OBJECT); // methodOop |
duke@435 | 2207 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 2208 | args->append(getThreadPointer()); |
duke@435 | 2209 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 2210 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 2211 | args->append(meth); |
duke@435 | 2212 | call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), voidType, NULL); |
duke@435 | 2213 | } |
duke@435 | 2214 | |
duke@435 | 2215 | if (method()->is_synchronized()) { |
duke@435 | 2216 | LIR_Opr obj; |
duke@435 | 2217 | if (method()->is_static()) { |
duke@435 | 2218 | obj = new_register(T_OBJECT); |
jrose@1424 | 2219 | __ oop2reg(method()->holder()->java_mirror()->constant_encoding(), obj); |
duke@435 | 2220 | } else { |
duke@435 | 2221 | Local* receiver = x->state()->local_at(0)->as_Local(); |
duke@435 | 2222 | assert(receiver != NULL, "must already exist"); |
duke@435 | 2223 | obj = receiver->operand(); |
duke@435 | 2224 | } |
duke@435 | 2225 | assert(obj->is_valid(), "must be valid"); |
duke@435 | 2226 | |
duke@435 | 2227 | if (method()->is_synchronized() && GenerateSynchronizationCode) { |
duke@435 | 2228 | LIR_Opr lock = new_register(T_INT); |
duke@435 | 2229 | __ load_stack_address_monitor(0, lock); |
duke@435 | 2230 | |
duke@435 | 2231 | CodeEmitInfo* info = new CodeEmitInfo(SynchronizationEntryBCI, scope()->start()->state(), NULL); |
duke@435 | 2232 | CodeStub* slow_path = new MonitorEnterStub(obj, lock, info); |
duke@435 | 2233 | |
duke@435 | 2234 | // receiver is guaranteed non-NULL so don't need CodeEmitInfo |
duke@435 | 2235 | __ lock_object(syncTempOpr(), obj, lock, new_register(T_OBJECT), slow_path, NULL); |
duke@435 | 2236 | } |
duke@435 | 2237 | } |
duke@435 | 2238 | |
duke@435 | 2239 | // increment invocation counters if needed |
duke@435 | 2240 | increment_invocation_counter(new CodeEmitInfo(0, scope()->start()->state(), NULL)); |
duke@435 | 2241 | |
duke@435 | 2242 | // all blocks with a successor must end with an unconditional jump |
duke@435 | 2243 | // to the successor even if they are consecutive |
duke@435 | 2244 | __ jump(x->default_sux()); |
duke@435 | 2245 | } |
duke@435 | 2246 | |
duke@435 | 2247 | |
duke@435 | 2248 | void LIRGenerator::do_OsrEntry(OsrEntry* x) { |
duke@435 | 2249 | // construct our frame and model the production of incoming pointer |
duke@435 | 2250 | // to the OSR buffer. |
duke@435 | 2251 | __ osr_entry(LIR_Assembler::osrBufferPointer()); |
duke@435 | 2252 | LIR_Opr result = rlock_result(x); |
duke@435 | 2253 | __ move(LIR_Assembler::osrBufferPointer(), result); |
duke@435 | 2254 | } |
duke@435 | 2255 | |
duke@435 | 2256 | |
duke@435 | 2257 | void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) { |
duke@435 | 2258 | int i = x->has_receiver() ? 1 : 0; |
duke@435 | 2259 | for (; i < args->length(); i++) { |
duke@435 | 2260 | LIRItem* param = args->at(i); |
duke@435 | 2261 | LIR_Opr loc = arg_list->at(i); |
duke@435 | 2262 | if (loc->is_register()) { |
duke@435 | 2263 | param->load_item_force(loc); |
duke@435 | 2264 | } else { |
duke@435 | 2265 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 2266 | param->load_for_store(addr->type()); |
duke@435 | 2267 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
duke@435 | 2268 | __ unaligned_move(param->result(), addr); |
duke@435 | 2269 | } else { |
duke@435 | 2270 | __ move(param->result(), addr); |
duke@435 | 2271 | } |
duke@435 | 2272 | } |
duke@435 | 2273 | } |
duke@435 | 2274 | |
duke@435 | 2275 | if (x->has_receiver()) { |
duke@435 | 2276 | LIRItem* receiver = args->at(0); |
duke@435 | 2277 | LIR_Opr loc = arg_list->at(0); |
duke@435 | 2278 | if (loc->is_register()) { |
duke@435 | 2279 | receiver->load_item_force(loc); |
duke@435 | 2280 | } else { |
duke@435 | 2281 | assert(loc->is_address(), "just checking"); |
duke@435 | 2282 | receiver->load_for_store(T_OBJECT); |
duke@435 | 2283 | __ move(receiver->result(), loc); |
duke@435 | 2284 | } |
duke@435 | 2285 | } |
duke@435 | 2286 | } |
duke@435 | 2287 | |
duke@435 | 2288 | |
duke@435 | 2289 | // Visits all arguments, returns appropriate items without loading them |
duke@435 | 2290 | LIRItemList* LIRGenerator::invoke_visit_arguments(Invoke* x) { |
duke@435 | 2291 | LIRItemList* argument_items = new LIRItemList(); |
duke@435 | 2292 | if (x->has_receiver()) { |
duke@435 | 2293 | LIRItem* receiver = new LIRItem(x->receiver(), this); |
duke@435 | 2294 | argument_items->append(receiver); |
duke@435 | 2295 | } |
duke@435 | 2296 | int idx = x->has_receiver() ? 1 : 0; |
duke@435 | 2297 | for (int i = 0; i < x->number_of_arguments(); i++) { |
duke@435 | 2298 | LIRItem* param = new LIRItem(x->argument_at(i), this); |
duke@435 | 2299 | argument_items->append(param); |
duke@435 | 2300 | idx += (param->type()->is_double_word() ? 2 : 1); |
duke@435 | 2301 | } |
duke@435 | 2302 | return argument_items; |
duke@435 | 2303 | } |
duke@435 | 2304 | |
duke@435 | 2305 | |
duke@435 | 2306 | // The invoke with receiver has following phases: |
duke@435 | 2307 | // a) traverse and load/lock receiver; |
duke@435 | 2308 | // b) traverse all arguments -> item-array (invoke_visit_argument) |
duke@435 | 2309 | // c) push receiver on stack |
duke@435 | 2310 | // d) load each of the items and push on stack |
duke@435 | 2311 | // e) unlock receiver |
duke@435 | 2312 | // f) move receiver into receiver-register %o0 |
duke@435 | 2313 | // g) lock result registers and emit call operation |
duke@435 | 2314 | // |
duke@435 | 2315 | // Before issuing a call, we must spill-save all values on stack |
duke@435 | 2316 | // that are in caller-save register. "spill-save" moves thos registers |
duke@435 | 2317 | // either in a free callee-save register or spills them if no free |
duke@435 | 2318 | // callee save register is available. |
duke@435 | 2319 | // |
duke@435 | 2320 | // The problem is where to invoke spill-save. |
duke@435 | 2321 | // - if invoked between e) and f), we may lock callee save |
duke@435 | 2322 | // register in "spill-save" that destroys the receiver register |
duke@435 | 2323 | // before f) is executed |
duke@435 | 2324 | // - if we rearange the f) to be earlier, by loading %o0, it |
duke@435 | 2325 | // may destroy a value on the stack that is currently in %o0 |
duke@435 | 2326 | // and is waiting to be spilled |
duke@435 | 2327 | // - if we keep the receiver locked while doing spill-save, |
duke@435 | 2328 | // we cannot spill it as it is spill-locked |
duke@435 | 2329 | // |
duke@435 | 2330 | void LIRGenerator::do_Invoke(Invoke* x) { |
duke@435 | 2331 | CallingConvention* cc = frame_map()->java_calling_convention(x->signature(), true); |
duke@435 | 2332 | |
duke@435 | 2333 | LIR_OprList* arg_list = cc->args(); |
duke@435 | 2334 | LIRItemList* args = invoke_visit_arguments(x); |
duke@435 | 2335 | LIR_Opr receiver = LIR_OprFact::illegalOpr; |
duke@435 | 2336 | |
duke@435 | 2337 | // setup result register |
duke@435 | 2338 | LIR_Opr result_register = LIR_OprFact::illegalOpr; |
duke@435 | 2339 | if (x->type() != voidType) { |
duke@435 | 2340 | result_register = result_register_for(x->type()); |
duke@435 | 2341 | } |
duke@435 | 2342 | |
duke@435 | 2343 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 2344 | |
duke@435 | 2345 | invoke_load_arguments(x, args, arg_list); |
duke@435 | 2346 | |
duke@435 | 2347 | if (x->has_receiver()) { |
duke@435 | 2348 | args->at(0)->load_item_force(LIR_Assembler::receiverOpr()); |
duke@435 | 2349 | receiver = args->at(0)->result(); |
duke@435 | 2350 | } |
duke@435 | 2351 | |
duke@435 | 2352 | // emit invoke code |
duke@435 | 2353 | bool optimized = x->target_is_loaded() && x->target_is_final(); |
duke@435 | 2354 | assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match"); |
duke@435 | 2355 | |
duke@435 | 2356 | switch (x->code()) { |
duke@435 | 2357 | case Bytecodes::_invokestatic: |
duke@435 | 2358 | __ call_static(x->target(), result_register, |
duke@435 | 2359 | SharedRuntime::get_resolve_static_call_stub(), |
duke@435 | 2360 | arg_list, info); |
duke@435 | 2361 | break; |
duke@435 | 2362 | case Bytecodes::_invokespecial: |
duke@435 | 2363 | case Bytecodes::_invokevirtual: |
duke@435 | 2364 | case Bytecodes::_invokeinterface: |
duke@435 | 2365 | // for final target we still produce an inline cache, in order |
duke@435 | 2366 | // to be able to call mixed mode |
duke@435 | 2367 | if (x->code() == Bytecodes::_invokespecial || optimized) { |
duke@435 | 2368 | __ call_opt_virtual(x->target(), receiver, result_register, |
duke@435 | 2369 | SharedRuntime::get_resolve_opt_virtual_call_stub(), |
duke@435 | 2370 | arg_list, info); |
duke@435 | 2371 | } else if (x->vtable_index() < 0) { |
duke@435 | 2372 | __ call_icvirtual(x->target(), receiver, result_register, |
duke@435 | 2373 | SharedRuntime::get_resolve_virtual_call_stub(), |
duke@435 | 2374 | arg_list, info); |
duke@435 | 2375 | } else { |
duke@435 | 2376 | int entry_offset = instanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size(); |
duke@435 | 2377 | int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes(); |
duke@435 | 2378 | __ call_virtual(x->target(), receiver, result_register, vtable_offset, arg_list, info); |
duke@435 | 2379 | } |
duke@435 | 2380 | break; |
duke@435 | 2381 | default: |
duke@435 | 2382 | ShouldNotReachHere(); |
duke@435 | 2383 | break; |
duke@435 | 2384 | } |
duke@435 | 2385 | |
duke@435 | 2386 | if (x->type()->is_float() || x->type()->is_double()) { |
duke@435 | 2387 | // Force rounding of results from non-strictfp when in strictfp |
duke@435 | 2388 | // scope (or when we don't know the strictness of the callee, to |
duke@435 | 2389 | // be safe.) |
duke@435 | 2390 | if (method()->is_strict()) { |
duke@435 | 2391 | if (!x->target_is_loaded() || !x->target_is_strictfp()) { |
duke@435 | 2392 | result_register = round_item(result_register); |
duke@435 | 2393 | } |
duke@435 | 2394 | } |
duke@435 | 2395 | } |
duke@435 | 2396 | |
duke@435 | 2397 | if (result_register->is_valid()) { |
duke@435 | 2398 | LIR_Opr result = rlock_result(x); |
duke@435 | 2399 | __ move(result_register, result); |
duke@435 | 2400 | } |
duke@435 | 2401 | } |
duke@435 | 2402 | |
duke@435 | 2403 | |
duke@435 | 2404 | void LIRGenerator::do_FPIntrinsics(Intrinsic* x) { |
duke@435 | 2405 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 2406 | LIRItem value (x->argument_at(0), this); |
duke@435 | 2407 | LIR_Opr reg = rlock_result(x); |
duke@435 | 2408 | value.load_item(); |
duke@435 | 2409 | LIR_Opr tmp = force_to_spill(value.result(), as_BasicType(x->type())); |
duke@435 | 2410 | __ move(tmp, reg); |
duke@435 | 2411 | } |
duke@435 | 2412 | |
duke@435 | 2413 | |
duke@435 | 2414 | |
duke@435 | 2415 | // Code for : x->x() {x->cond()} x->y() ? x->tval() : x->fval() |
duke@435 | 2416 | void LIRGenerator::do_IfOp(IfOp* x) { |
duke@435 | 2417 | #ifdef ASSERT |
duke@435 | 2418 | { |
duke@435 | 2419 | ValueTag xtag = x->x()->type()->tag(); |
duke@435 | 2420 | ValueTag ttag = x->tval()->type()->tag(); |
duke@435 | 2421 | assert(xtag == intTag || xtag == objectTag, "cannot handle others"); |
duke@435 | 2422 | assert(ttag == addressTag || ttag == intTag || ttag == objectTag || ttag == longTag, "cannot handle others"); |
duke@435 | 2423 | assert(ttag == x->fval()->type()->tag(), "cannot handle others"); |
duke@435 | 2424 | } |
duke@435 | 2425 | #endif |
duke@435 | 2426 | |
duke@435 | 2427 | LIRItem left(x->x(), this); |
duke@435 | 2428 | LIRItem right(x->y(), this); |
duke@435 | 2429 | left.load_item(); |
duke@435 | 2430 | if (can_inline_as_constant(right.value())) { |
duke@435 | 2431 | right.dont_load_item(); |
duke@435 | 2432 | } else { |
duke@435 | 2433 | right.load_item(); |
duke@435 | 2434 | } |
duke@435 | 2435 | |
duke@435 | 2436 | LIRItem t_val(x->tval(), this); |
duke@435 | 2437 | LIRItem f_val(x->fval(), this); |
duke@435 | 2438 | t_val.dont_load_item(); |
duke@435 | 2439 | f_val.dont_load_item(); |
duke@435 | 2440 | LIR_Opr reg = rlock_result(x); |
duke@435 | 2441 | |
duke@435 | 2442 | __ cmp(lir_cond(x->cond()), left.result(), right.result()); |
duke@435 | 2443 | __ cmove(lir_cond(x->cond()), t_val.result(), f_val.result(), reg); |
duke@435 | 2444 | } |
duke@435 | 2445 | |
duke@435 | 2446 | |
duke@435 | 2447 | void LIRGenerator::do_Intrinsic(Intrinsic* x) { |
duke@435 | 2448 | switch (x->id()) { |
duke@435 | 2449 | case vmIntrinsics::_intBitsToFloat : |
duke@435 | 2450 | case vmIntrinsics::_doubleToRawLongBits : |
duke@435 | 2451 | case vmIntrinsics::_longBitsToDouble : |
duke@435 | 2452 | case vmIntrinsics::_floatToRawIntBits : { |
duke@435 | 2453 | do_FPIntrinsics(x); |
duke@435 | 2454 | break; |
duke@435 | 2455 | } |
duke@435 | 2456 | |
duke@435 | 2457 | case vmIntrinsics::_currentTimeMillis: { |
duke@435 | 2458 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 2459 | LIR_Opr reg = result_register_for(x->type()); |
duke@435 | 2460 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, os::javaTimeMillis), getThreadTemp(), |
duke@435 | 2461 | reg, new LIR_OprList()); |
duke@435 | 2462 | LIR_Opr result = rlock_result(x); |
duke@435 | 2463 | __ move(reg, result); |
duke@435 | 2464 | break; |
duke@435 | 2465 | } |
duke@435 | 2466 | |
duke@435 | 2467 | case vmIntrinsics::_nanoTime: { |
duke@435 | 2468 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 2469 | LIR_Opr reg = result_register_for(x->type()); |
duke@435 | 2470 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, os::javaTimeNanos), getThreadTemp(), |
duke@435 | 2471 | reg, new LIR_OprList()); |
duke@435 | 2472 | LIR_Opr result = rlock_result(x); |
duke@435 | 2473 | __ move(reg, result); |
duke@435 | 2474 | break; |
duke@435 | 2475 | } |
duke@435 | 2476 | |
duke@435 | 2477 | case vmIntrinsics::_Object_init: do_RegisterFinalizer(x); break; |
duke@435 | 2478 | case vmIntrinsics::_getClass: do_getClass(x); break; |
duke@435 | 2479 | case vmIntrinsics::_currentThread: do_currentThread(x); break; |
duke@435 | 2480 | |
duke@435 | 2481 | case vmIntrinsics::_dlog: // fall through |
duke@435 | 2482 | case vmIntrinsics::_dlog10: // fall through |
duke@435 | 2483 | case vmIntrinsics::_dabs: // fall through |
duke@435 | 2484 | case vmIntrinsics::_dsqrt: // fall through |
duke@435 | 2485 | case vmIntrinsics::_dtan: // fall through |
duke@435 | 2486 | case vmIntrinsics::_dsin : // fall through |
duke@435 | 2487 | case vmIntrinsics::_dcos : do_MathIntrinsic(x); break; |
duke@435 | 2488 | case vmIntrinsics::_arraycopy: do_ArrayCopy(x); break; |
duke@435 | 2489 | |
duke@435 | 2490 | // java.nio.Buffer.checkIndex |
duke@435 | 2491 | case vmIntrinsics::_checkIndex: do_NIOCheckIndex(x); break; |
duke@435 | 2492 | |
duke@435 | 2493 | case vmIntrinsics::_compareAndSwapObject: |
duke@435 | 2494 | do_CompareAndSwap(x, objectType); |
duke@435 | 2495 | break; |
duke@435 | 2496 | case vmIntrinsics::_compareAndSwapInt: |
duke@435 | 2497 | do_CompareAndSwap(x, intType); |
duke@435 | 2498 | break; |
duke@435 | 2499 | case vmIntrinsics::_compareAndSwapLong: |
duke@435 | 2500 | do_CompareAndSwap(x, longType); |
duke@435 | 2501 | break; |
duke@435 | 2502 | |
duke@435 | 2503 | // sun.misc.AtomicLongCSImpl.attemptUpdate |
duke@435 | 2504 | case vmIntrinsics::_attemptUpdate: |
duke@435 | 2505 | do_AttemptUpdate(x); |
duke@435 | 2506 | break; |
duke@435 | 2507 | |
duke@435 | 2508 | default: ShouldNotReachHere(); break; |
duke@435 | 2509 | } |
duke@435 | 2510 | } |
duke@435 | 2511 | |
duke@435 | 2512 | |
duke@435 | 2513 | void LIRGenerator::do_ProfileCall(ProfileCall* x) { |
duke@435 | 2514 | // Need recv in a temporary register so it interferes with the other temporaries |
duke@435 | 2515 | LIR_Opr recv = LIR_OprFact::illegalOpr; |
duke@435 | 2516 | LIR_Opr mdo = new_register(T_OBJECT); |
duke@435 | 2517 | LIR_Opr tmp = new_register(T_INT); |
duke@435 | 2518 | if (x->recv() != NULL) { |
duke@435 | 2519 | LIRItem value(x->recv(), this); |
duke@435 | 2520 | value.load_item(); |
duke@435 | 2521 | recv = new_register(T_OBJECT); |
duke@435 | 2522 | __ move(value.result(), recv); |
duke@435 | 2523 | } |
duke@435 | 2524 | __ profile_call(x->method(), x->bci_of_invoke(), mdo, recv, tmp, x->known_holder()); |
duke@435 | 2525 | } |
duke@435 | 2526 | |
duke@435 | 2527 | |
duke@435 | 2528 | void LIRGenerator::do_ProfileCounter(ProfileCounter* x) { |
duke@435 | 2529 | LIRItem mdo(x->mdo(), this); |
duke@435 | 2530 | mdo.load_item(); |
duke@435 | 2531 | |
duke@435 | 2532 | increment_counter(new LIR_Address(mdo.result(), x->offset(), T_INT), x->increment()); |
duke@435 | 2533 | } |
duke@435 | 2534 | |
duke@435 | 2535 | |
duke@435 | 2536 | LIR_Opr LIRGenerator::call_runtime(Value arg1, address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2537 | LIRItemList args(1); |
duke@435 | 2538 | LIRItem value(arg1, this); |
duke@435 | 2539 | args.append(&value); |
duke@435 | 2540 | BasicTypeList signature; |
duke@435 | 2541 | signature.append(as_BasicType(arg1->type())); |
duke@435 | 2542 | |
duke@435 | 2543 | return call_runtime(&signature, &args, entry, result_type, info); |
duke@435 | 2544 | } |
duke@435 | 2545 | |
duke@435 | 2546 | |
duke@435 | 2547 | LIR_Opr LIRGenerator::call_runtime(Value arg1, Value arg2, address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2548 | LIRItemList args(2); |
duke@435 | 2549 | LIRItem value1(arg1, this); |
duke@435 | 2550 | LIRItem value2(arg2, this); |
duke@435 | 2551 | args.append(&value1); |
duke@435 | 2552 | args.append(&value2); |
duke@435 | 2553 | BasicTypeList signature; |
duke@435 | 2554 | signature.append(as_BasicType(arg1->type())); |
duke@435 | 2555 | signature.append(as_BasicType(arg2->type())); |
duke@435 | 2556 | |
duke@435 | 2557 | return call_runtime(&signature, &args, entry, result_type, info); |
duke@435 | 2558 | } |
duke@435 | 2559 | |
duke@435 | 2560 | |
duke@435 | 2561 | LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIR_OprList* args, |
duke@435 | 2562 | address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2563 | // get a result register |
duke@435 | 2564 | LIR_Opr phys_reg = LIR_OprFact::illegalOpr; |
duke@435 | 2565 | LIR_Opr result = LIR_OprFact::illegalOpr; |
duke@435 | 2566 | if (result_type->tag() != voidTag) { |
duke@435 | 2567 | result = new_register(result_type); |
duke@435 | 2568 | phys_reg = result_register_for(result_type); |
duke@435 | 2569 | } |
duke@435 | 2570 | |
duke@435 | 2571 | // move the arguments into the correct location |
duke@435 | 2572 | CallingConvention* cc = frame_map()->c_calling_convention(signature); |
duke@435 | 2573 | assert(cc->length() == args->length(), "argument mismatch"); |
duke@435 | 2574 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 2575 | LIR_Opr arg = args->at(i); |
duke@435 | 2576 | LIR_Opr loc = cc->at(i); |
duke@435 | 2577 | if (loc->is_register()) { |
duke@435 | 2578 | __ move(arg, loc); |
duke@435 | 2579 | } else { |
duke@435 | 2580 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 2581 | // if (!can_store_as_constant(arg)) { |
duke@435 | 2582 | // LIR_Opr tmp = new_register(arg->type()); |
duke@435 | 2583 | // __ move(arg, tmp); |
duke@435 | 2584 | // arg = tmp; |
duke@435 | 2585 | // } |
duke@435 | 2586 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
duke@435 | 2587 | __ unaligned_move(arg, addr); |
duke@435 | 2588 | } else { |
duke@435 | 2589 | __ move(arg, addr); |
duke@435 | 2590 | } |
duke@435 | 2591 | } |
duke@435 | 2592 | } |
duke@435 | 2593 | |
duke@435 | 2594 | if (info) { |
duke@435 | 2595 | __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); |
duke@435 | 2596 | } else { |
duke@435 | 2597 | __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); |
duke@435 | 2598 | } |
duke@435 | 2599 | if (result->is_valid()) { |
duke@435 | 2600 | __ move(phys_reg, result); |
duke@435 | 2601 | } |
duke@435 | 2602 | return result; |
duke@435 | 2603 | } |
duke@435 | 2604 | |
duke@435 | 2605 | |
duke@435 | 2606 | LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIRItemList* args, |
duke@435 | 2607 | address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2608 | // get a result register |
duke@435 | 2609 | LIR_Opr phys_reg = LIR_OprFact::illegalOpr; |
duke@435 | 2610 | LIR_Opr result = LIR_OprFact::illegalOpr; |
duke@435 | 2611 | if (result_type->tag() != voidTag) { |
duke@435 | 2612 | result = new_register(result_type); |
duke@435 | 2613 | phys_reg = result_register_for(result_type); |
duke@435 | 2614 | } |
duke@435 | 2615 | |
duke@435 | 2616 | // move the arguments into the correct location |
duke@435 | 2617 | CallingConvention* cc = frame_map()->c_calling_convention(signature); |
duke@435 | 2618 | |
duke@435 | 2619 | assert(cc->length() == args->length(), "argument mismatch"); |
duke@435 | 2620 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 2621 | LIRItem* arg = args->at(i); |
duke@435 | 2622 | LIR_Opr loc = cc->at(i); |
duke@435 | 2623 | if (loc->is_register()) { |
duke@435 | 2624 | arg->load_item_force(loc); |
duke@435 | 2625 | } else { |
duke@435 | 2626 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 2627 | arg->load_for_store(addr->type()); |
duke@435 | 2628 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
duke@435 | 2629 | __ unaligned_move(arg->result(), addr); |
duke@435 | 2630 | } else { |
duke@435 | 2631 | __ move(arg->result(), addr); |
duke@435 | 2632 | } |
duke@435 | 2633 | } |
duke@435 | 2634 | } |
duke@435 | 2635 | |
duke@435 | 2636 | if (info) { |
duke@435 | 2637 | __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); |
duke@435 | 2638 | } else { |
duke@435 | 2639 | __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); |
duke@435 | 2640 | } |
duke@435 | 2641 | if (result->is_valid()) { |
duke@435 | 2642 | __ move(phys_reg, result); |
duke@435 | 2643 | } |
duke@435 | 2644 | return result; |
duke@435 | 2645 | } |
duke@435 | 2646 | |
duke@435 | 2647 | |
duke@435 | 2648 | |
duke@435 | 2649 | void LIRGenerator::increment_invocation_counter(CodeEmitInfo* info, bool backedge) { |
duke@435 | 2650 | #ifdef TIERED |
duke@435 | 2651 | if (_compilation->env()->comp_level() == CompLevel_fast_compile && |
duke@435 | 2652 | (method()->code_size() >= Tier1BytecodeLimit || backedge)) { |
duke@435 | 2653 | int limit = InvocationCounter::Tier1InvocationLimit; |
duke@435 | 2654 | int offset = in_bytes(methodOopDesc::invocation_counter_offset() + |
duke@435 | 2655 | InvocationCounter::counter_offset()); |
duke@435 | 2656 | if (backedge) { |
duke@435 | 2657 | limit = InvocationCounter::Tier1BackEdgeLimit; |
duke@435 | 2658 | offset = in_bytes(methodOopDesc::backedge_counter_offset() + |
duke@435 | 2659 | InvocationCounter::counter_offset()); |
duke@435 | 2660 | } |
duke@435 | 2661 | |
duke@435 | 2662 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 2663 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 2664 | LIR_Opr result = increment_and_return_counter(meth, offset, InvocationCounter::count_increment); |
duke@435 | 2665 | __ cmp(lir_cond_aboveEqual, result, LIR_OprFact::intConst(limit)); |
duke@435 | 2666 | CodeStub* overflow = new CounterOverflowStub(info, info->bci()); |
duke@435 | 2667 | __ branch(lir_cond_aboveEqual, T_INT, overflow); |
duke@435 | 2668 | __ branch_destination(overflow->continuation()); |
duke@435 | 2669 | } |
duke@435 | 2670 | #endif |
duke@435 | 2671 | } |