Wed, 13 Apr 2011 17:56:43 -0700
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
Summary: Allow long type for offset in G1 code in compiler implementations of Unsafe.getObject
Reviewed-by: never, iveresov
duke@435 | 1 | /* |
never@2486 | 2 | * Copyright (c) 2005, 2011, Oracle and/or its affiliates. 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 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "c1/c1_Compilation.hpp" |
stefank@2314 | 27 | #include "c1/c1_FrameMap.hpp" |
stefank@2314 | 28 | #include "c1/c1_Instruction.hpp" |
stefank@2314 | 29 | #include "c1/c1_LIRAssembler.hpp" |
stefank@2314 | 30 | #include "c1/c1_LIRGenerator.hpp" |
stefank@2314 | 31 | #include "c1/c1_ValueStack.hpp" |
stefank@2314 | 32 | #include "ci/ciArrayKlass.hpp" |
stefank@2314 | 33 | #include "ci/ciCPCache.hpp" |
stefank@2314 | 34 | #include "ci/ciInstance.hpp" |
stefank@2314 | 35 | #include "runtime/sharedRuntime.hpp" |
stefank@2314 | 36 | #include "runtime/stubRoutines.hpp" |
stefank@2314 | 37 | #include "utilities/bitMap.inline.hpp" |
stefank@2314 | 38 | #ifndef SERIALGC |
stefank@2314 | 39 | #include "gc_implementation/g1/heapRegion.hpp" |
stefank@2314 | 40 | #endif |
duke@435 | 41 | |
duke@435 | 42 | #ifdef ASSERT |
duke@435 | 43 | #define __ gen()->lir(__FILE__, __LINE__)-> |
duke@435 | 44 | #else |
duke@435 | 45 | #define __ gen()->lir()-> |
duke@435 | 46 | #endif |
duke@435 | 47 | |
bobv@2036 | 48 | // TODO: ARM - Use some recognizable constant which still fits architectural constraints |
bobv@2036 | 49 | #ifdef ARM |
bobv@2036 | 50 | #define PATCHED_ADDR (204) |
bobv@2036 | 51 | #else |
bobv@2036 | 52 | #define PATCHED_ADDR (max_jint) |
bobv@2036 | 53 | #endif |
duke@435 | 54 | |
duke@435 | 55 | void PhiResolverState::reset(int max_vregs) { |
duke@435 | 56 | // Initialize array sizes |
duke@435 | 57 | _virtual_operands.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 58 | _virtual_operands.trunc_to(0); |
duke@435 | 59 | _other_operands.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 60 | _other_operands.trunc_to(0); |
duke@435 | 61 | _vreg_table.at_put_grow(max_vregs - 1, NULL, NULL); |
duke@435 | 62 | _vreg_table.trunc_to(0); |
duke@435 | 63 | } |
duke@435 | 64 | |
duke@435 | 65 | |
duke@435 | 66 | |
duke@435 | 67 | //-------------------------------------------------------------- |
duke@435 | 68 | // PhiResolver |
duke@435 | 69 | |
duke@435 | 70 | // Resolves cycles: |
duke@435 | 71 | // |
duke@435 | 72 | // r1 := r2 becomes temp := r1 |
duke@435 | 73 | // r2 := r1 r1 := r2 |
duke@435 | 74 | // r2 := temp |
duke@435 | 75 | // and orders moves: |
duke@435 | 76 | // |
duke@435 | 77 | // r2 := r3 becomes r1 := r2 |
duke@435 | 78 | // r1 := r2 r2 := r3 |
duke@435 | 79 | |
duke@435 | 80 | PhiResolver::PhiResolver(LIRGenerator* gen, int max_vregs) |
duke@435 | 81 | : _gen(gen) |
duke@435 | 82 | , _state(gen->resolver_state()) |
duke@435 | 83 | , _temp(LIR_OprFact::illegalOpr) |
duke@435 | 84 | { |
duke@435 | 85 | // reinitialize the shared state arrays |
duke@435 | 86 | _state.reset(max_vregs); |
duke@435 | 87 | } |
duke@435 | 88 | |
duke@435 | 89 | |
duke@435 | 90 | void PhiResolver::emit_move(LIR_Opr src, LIR_Opr dest) { |
duke@435 | 91 | assert(src->is_valid(), ""); |
duke@435 | 92 | assert(dest->is_valid(), ""); |
duke@435 | 93 | __ move(src, dest); |
duke@435 | 94 | } |
duke@435 | 95 | |
duke@435 | 96 | |
duke@435 | 97 | void PhiResolver::move_temp_to(LIR_Opr dest) { |
duke@435 | 98 | assert(_temp->is_valid(), ""); |
duke@435 | 99 | emit_move(_temp, dest); |
duke@435 | 100 | NOT_PRODUCT(_temp = LIR_OprFact::illegalOpr); |
duke@435 | 101 | } |
duke@435 | 102 | |
duke@435 | 103 | |
duke@435 | 104 | void PhiResolver::move_to_temp(LIR_Opr src) { |
duke@435 | 105 | assert(_temp->is_illegal(), ""); |
duke@435 | 106 | _temp = _gen->new_register(src->type()); |
duke@435 | 107 | emit_move(src, _temp); |
duke@435 | 108 | } |
duke@435 | 109 | |
duke@435 | 110 | |
duke@435 | 111 | // Traverse assignment graph in depth first order and generate moves in post order |
duke@435 | 112 | // ie. two assignments: b := c, a := b start with node c: |
duke@435 | 113 | // Call graph: move(NULL, c) -> move(c, b) -> move(b, a) |
duke@435 | 114 | // Generates moves in this order: move b to a and move c to b |
duke@435 | 115 | // ie. cycle a := b, b := a start with node a |
duke@435 | 116 | // Call graph: move(NULL, a) -> move(a, b) -> move(b, a) |
duke@435 | 117 | // Generates moves in this order: move b to temp, move a to b, move temp to a |
duke@435 | 118 | void PhiResolver::move(ResolveNode* src, ResolveNode* dest) { |
duke@435 | 119 | if (!dest->visited()) { |
duke@435 | 120 | dest->set_visited(); |
duke@435 | 121 | for (int i = dest->no_of_destinations()-1; i >= 0; i --) { |
duke@435 | 122 | move(dest, dest->destination_at(i)); |
duke@435 | 123 | } |
duke@435 | 124 | } else if (!dest->start_node()) { |
duke@435 | 125 | // cylce in graph detected |
duke@435 | 126 | assert(_loop == NULL, "only one loop valid!"); |
duke@435 | 127 | _loop = dest; |
duke@435 | 128 | move_to_temp(src->operand()); |
duke@435 | 129 | return; |
duke@435 | 130 | } // else dest is a start node |
duke@435 | 131 | |
duke@435 | 132 | if (!dest->assigned()) { |
duke@435 | 133 | if (_loop == dest) { |
duke@435 | 134 | move_temp_to(dest->operand()); |
duke@435 | 135 | dest->set_assigned(); |
duke@435 | 136 | } else if (src != NULL) { |
duke@435 | 137 | emit_move(src->operand(), dest->operand()); |
duke@435 | 138 | dest->set_assigned(); |
duke@435 | 139 | } |
duke@435 | 140 | } |
duke@435 | 141 | } |
duke@435 | 142 | |
duke@435 | 143 | |
duke@435 | 144 | PhiResolver::~PhiResolver() { |
duke@435 | 145 | int i; |
duke@435 | 146 | // resolve any cycles in moves from and to virtual registers |
duke@435 | 147 | for (i = virtual_operands().length() - 1; i >= 0; i --) { |
duke@435 | 148 | ResolveNode* node = virtual_operands()[i]; |
duke@435 | 149 | if (!node->visited()) { |
duke@435 | 150 | _loop = NULL; |
duke@435 | 151 | move(NULL, node); |
duke@435 | 152 | node->set_start_node(); |
duke@435 | 153 | assert(_temp->is_illegal(), "move_temp_to() call missing"); |
duke@435 | 154 | } |
duke@435 | 155 | } |
duke@435 | 156 | |
duke@435 | 157 | // generate move for move from non virtual register to abitrary destination |
duke@435 | 158 | for (i = other_operands().length() - 1; i >= 0; i --) { |
duke@435 | 159 | ResolveNode* node = other_operands()[i]; |
duke@435 | 160 | for (int j = node->no_of_destinations() - 1; j >= 0; j --) { |
duke@435 | 161 | emit_move(node->operand(), node->destination_at(j)->operand()); |
duke@435 | 162 | } |
duke@435 | 163 | } |
duke@435 | 164 | } |
duke@435 | 165 | |
duke@435 | 166 | |
duke@435 | 167 | ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) { |
duke@435 | 168 | ResolveNode* node; |
duke@435 | 169 | if (opr->is_virtual()) { |
duke@435 | 170 | int vreg_num = opr->vreg_number(); |
duke@435 | 171 | node = vreg_table().at_grow(vreg_num, NULL); |
duke@435 | 172 | assert(node == NULL || node->operand() == opr, ""); |
duke@435 | 173 | if (node == NULL) { |
duke@435 | 174 | node = new ResolveNode(opr); |
duke@435 | 175 | vreg_table()[vreg_num] = node; |
duke@435 | 176 | } |
duke@435 | 177 | // Make sure that all virtual operands show up in the list when |
duke@435 | 178 | // they are used as the source of a move. |
duke@435 | 179 | if (source && !virtual_operands().contains(node)) { |
duke@435 | 180 | virtual_operands().append(node); |
duke@435 | 181 | } |
duke@435 | 182 | } else { |
duke@435 | 183 | assert(source, ""); |
duke@435 | 184 | node = new ResolveNode(opr); |
duke@435 | 185 | other_operands().append(node); |
duke@435 | 186 | } |
duke@435 | 187 | return node; |
duke@435 | 188 | } |
duke@435 | 189 | |
duke@435 | 190 | |
duke@435 | 191 | void PhiResolver::move(LIR_Opr src, LIR_Opr dest) { |
duke@435 | 192 | assert(dest->is_virtual(), ""); |
duke@435 | 193 | // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr(); |
duke@435 | 194 | assert(src->is_valid(), ""); |
duke@435 | 195 | assert(dest->is_valid(), ""); |
duke@435 | 196 | ResolveNode* source = source_node(src); |
duke@435 | 197 | source->append(destination_node(dest)); |
duke@435 | 198 | } |
duke@435 | 199 | |
duke@435 | 200 | |
duke@435 | 201 | //-------------------------------------------------------------- |
duke@435 | 202 | // LIRItem |
duke@435 | 203 | |
duke@435 | 204 | void LIRItem::set_result(LIR_Opr opr) { |
duke@435 | 205 | assert(value()->operand()->is_illegal() || value()->operand()->is_constant(), "operand should never change"); |
duke@435 | 206 | value()->set_operand(opr); |
duke@435 | 207 | |
duke@435 | 208 | if (opr->is_virtual()) { |
duke@435 | 209 | _gen->_instruction_for_operand.at_put_grow(opr->vreg_number(), value(), NULL); |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | _result = opr; |
duke@435 | 213 | } |
duke@435 | 214 | |
duke@435 | 215 | void LIRItem::load_item() { |
duke@435 | 216 | if (result()->is_illegal()) { |
duke@435 | 217 | // update the items result |
duke@435 | 218 | _result = value()->operand(); |
duke@435 | 219 | } |
duke@435 | 220 | if (!result()->is_register()) { |
duke@435 | 221 | LIR_Opr reg = _gen->new_register(value()->type()); |
duke@435 | 222 | __ move(result(), reg); |
duke@435 | 223 | if (result()->is_constant()) { |
duke@435 | 224 | _result = reg; |
duke@435 | 225 | } else { |
duke@435 | 226 | set_result(reg); |
duke@435 | 227 | } |
duke@435 | 228 | } |
duke@435 | 229 | } |
duke@435 | 230 | |
duke@435 | 231 | |
duke@435 | 232 | void LIRItem::load_for_store(BasicType type) { |
duke@435 | 233 | if (_gen->can_store_as_constant(value(), type)) { |
duke@435 | 234 | _result = value()->operand(); |
duke@435 | 235 | if (!_result->is_constant()) { |
duke@435 | 236 | _result = LIR_OprFact::value_type(value()->type()); |
duke@435 | 237 | } |
duke@435 | 238 | } else if (type == T_BYTE || type == T_BOOLEAN) { |
duke@435 | 239 | load_byte_item(); |
duke@435 | 240 | } else { |
duke@435 | 241 | load_item(); |
duke@435 | 242 | } |
duke@435 | 243 | } |
duke@435 | 244 | |
duke@435 | 245 | void LIRItem::load_item_force(LIR_Opr reg) { |
duke@435 | 246 | LIR_Opr r = result(); |
duke@435 | 247 | if (r != reg) { |
bobv@2036 | 248 | #if !defined(ARM) && !defined(E500V2) |
duke@435 | 249 | if (r->type() != reg->type()) { |
duke@435 | 250 | // moves between different types need an intervening spill slot |
bobv@2036 | 251 | r = _gen->force_to_spill(r, reg->type()); |
duke@435 | 252 | } |
bobv@2036 | 253 | #endif |
bobv@2036 | 254 | __ move(r, reg); |
duke@435 | 255 | _result = reg; |
duke@435 | 256 | } |
duke@435 | 257 | } |
duke@435 | 258 | |
duke@435 | 259 | ciObject* LIRItem::get_jobject_constant() const { |
duke@435 | 260 | ObjectType* oc = type()->as_ObjectType(); |
duke@435 | 261 | if (oc) { |
duke@435 | 262 | return oc->constant_value(); |
duke@435 | 263 | } |
duke@435 | 264 | return NULL; |
duke@435 | 265 | } |
duke@435 | 266 | |
duke@435 | 267 | |
duke@435 | 268 | jint LIRItem::get_jint_constant() const { |
duke@435 | 269 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 270 | assert(type()->as_IntConstant() != NULL, "type check"); |
duke@435 | 271 | return type()->as_IntConstant()->value(); |
duke@435 | 272 | } |
duke@435 | 273 | |
duke@435 | 274 | |
duke@435 | 275 | jint LIRItem::get_address_constant() const { |
duke@435 | 276 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 277 | assert(type()->as_AddressConstant() != NULL, "type check"); |
duke@435 | 278 | return type()->as_AddressConstant()->value(); |
duke@435 | 279 | } |
duke@435 | 280 | |
duke@435 | 281 | |
duke@435 | 282 | jfloat LIRItem::get_jfloat_constant() const { |
duke@435 | 283 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 284 | assert(type()->as_FloatConstant() != NULL, "type check"); |
duke@435 | 285 | return type()->as_FloatConstant()->value(); |
duke@435 | 286 | } |
duke@435 | 287 | |
duke@435 | 288 | |
duke@435 | 289 | jdouble LIRItem::get_jdouble_constant() const { |
duke@435 | 290 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 291 | assert(type()->as_DoubleConstant() != NULL, "type check"); |
duke@435 | 292 | return type()->as_DoubleConstant()->value(); |
duke@435 | 293 | } |
duke@435 | 294 | |
duke@435 | 295 | |
duke@435 | 296 | jlong LIRItem::get_jlong_constant() const { |
duke@435 | 297 | assert(is_constant() && value() != NULL, ""); |
duke@435 | 298 | assert(type()->as_LongConstant() != NULL, "type check"); |
duke@435 | 299 | return type()->as_LongConstant()->value(); |
duke@435 | 300 | } |
duke@435 | 301 | |
duke@435 | 302 | |
duke@435 | 303 | |
duke@435 | 304 | //-------------------------------------------------------------- |
duke@435 | 305 | |
duke@435 | 306 | |
duke@435 | 307 | void LIRGenerator::init() { |
ysr@777 | 308 | _bs = Universe::heap()->barrier_set(); |
duke@435 | 309 | } |
duke@435 | 310 | |
duke@435 | 311 | |
duke@435 | 312 | void LIRGenerator::block_do_prolog(BlockBegin* block) { |
duke@435 | 313 | #ifndef PRODUCT |
duke@435 | 314 | if (PrintIRWithLIR) { |
duke@435 | 315 | block->print(); |
duke@435 | 316 | } |
duke@435 | 317 | #endif |
duke@435 | 318 | |
duke@435 | 319 | // set up the list of LIR instructions |
duke@435 | 320 | assert(block->lir() == NULL, "LIR list already computed for this block"); |
duke@435 | 321 | _lir = new LIR_List(compilation(), block); |
duke@435 | 322 | block->set_lir(_lir); |
duke@435 | 323 | |
duke@435 | 324 | __ branch_destination(block->label()); |
duke@435 | 325 | |
duke@435 | 326 | if (LIRTraceExecution && |
iveresov@1939 | 327 | Compilation::current()->hir()->start()->block_id() != block->block_id() && |
duke@435 | 328 | !block->is_set(BlockBegin::exception_entry_flag)) { |
duke@435 | 329 | assert(block->lir()->instructions_list()->length() == 1, "should come right after br_dst"); |
duke@435 | 330 | trace_block_entry(block); |
duke@435 | 331 | } |
duke@435 | 332 | } |
duke@435 | 333 | |
duke@435 | 334 | |
duke@435 | 335 | void LIRGenerator::block_do_epilog(BlockBegin* block) { |
duke@435 | 336 | #ifndef PRODUCT |
duke@435 | 337 | if (PrintIRWithLIR) { |
duke@435 | 338 | tty->cr(); |
duke@435 | 339 | } |
duke@435 | 340 | #endif |
duke@435 | 341 | |
duke@435 | 342 | // LIR_Opr for unpinned constants shouldn't be referenced by other |
duke@435 | 343 | // blocks so clear them out after processing the block. |
duke@435 | 344 | for (int i = 0; i < _unpinned_constants.length(); i++) { |
duke@435 | 345 | _unpinned_constants.at(i)->clear_operand(); |
duke@435 | 346 | } |
duke@435 | 347 | _unpinned_constants.trunc_to(0); |
duke@435 | 348 | |
duke@435 | 349 | // clear our any registers for other local constants |
duke@435 | 350 | _constants.trunc_to(0); |
duke@435 | 351 | _reg_for_constants.trunc_to(0); |
duke@435 | 352 | } |
duke@435 | 353 | |
duke@435 | 354 | |
duke@435 | 355 | void LIRGenerator::block_do(BlockBegin* block) { |
duke@435 | 356 | CHECK_BAILOUT(); |
duke@435 | 357 | |
duke@435 | 358 | block_do_prolog(block); |
duke@435 | 359 | set_block(block); |
duke@435 | 360 | |
duke@435 | 361 | for (Instruction* instr = block; instr != NULL; instr = instr->next()) { |
duke@435 | 362 | if (instr->is_pinned()) do_root(instr); |
duke@435 | 363 | } |
duke@435 | 364 | |
duke@435 | 365 | set_block(NULL); |
duke@435 | 366 | block_do_epilog(block); |
duke@435 | 367 | } |
duke@435 | 368 | |
duke@435 | 369 | |
duke@435 | 370 | //-------------------------LIRGenerator----------------------------- |
duke@435 | 371 | |
duke@435 | 372 | // This is where the tree-walk starts; instr must be root; |
duke@435 | 373 | void LIRGenerator::do_root(Value instr) { |
duke@435 | 374 | CHECK_BAILOUT(); |
duke@435 | 375 | |
duke@435 | 376 | InstructionMark im(compilation(), instr); |
duke@435 | 377 | |
duke@435 | 378 | assert(instr->is_pinned(), "use only with roots"); |
duke@435 | 379 | assert(instr->subst() == instr, "shouldn't have missed substitution"); |
duke@435 | 380 | |
duke@435 | 381 | instr->visit(this); |
duke@435 | 382 | |
duke@435 | 383 | assert(!instr->has_uses() || instr->operand()->is_valid() || |
duke@435 | 384 | instr->as_Constant() != NULL || bailed_out(), "invalid item set"); |
duke@435 | 385 | } |
duke@435 | 386 | |
duke@435 | 387 | |
duke@435 | 388 | // This is called for each node in tree; the walk stops if a root is reached |
duke@435 | 389 | void LIRGenerator::walk(Value instr) { |
duke@435 | 390 | InstructionMark im(compilation(), instr); |
duke@435 | 391 | //stop walk when encounter a root |
duke@435 | 392 | if (instr->is_pinned() && instr->as_Phi() == NULL || instr->operand()->is_valid()) { |
duke@435 | 393 | assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited"); |
duke@435 | 394 | } else { |
duke@435 | 395 | assert(instr->subst() == instr, "shouldn't have missed substitution"); |
duke@435 | 396 | instr->visit(this); |
duke@435 | 397 | // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use"); |
duke@435 | 398 | } |
duke@435 | 399 | } |
duke@435 | 400 | |
duke@435 | 401 | |
duke@435 | 402 | CodeEmitInfo* LIRGenerator::state_for(Instruction* x, ValueStack* state, bool ignore_xhandler) { |
roland@2174 | 403 | assert(state != NULL, "state must be defined"); |
roland@2174 | 404 | |
roland@2174 | 405 | ValueStack* s = state; |
roland@2174 | 406 | for_each_state(s) { |
roland@2174 | 407 | if (s->kind() == ValueStack::EmptyExceptionState) { |
roland@2174 | 408 | assert(s->stack_size() == 0 && s->locals_size() == 0 && (s->locks_size() == 0 || s->locks_size() == 1), "state must be empty"); |
roland@2174 | 409 | continue; |
duke@435 | 410 | } |
roland@2174 | 411 | |
roland@2174 | 412 | int index; |
roland@2174 | 413 | Value value; |
roland@2174 | 414 | for_each_stack_value(s, index, value) { |
roland@2174 | 415 | assert(value->subst() == value, "missed substitution"); |
roland@2174 | 416 | if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { |
roland@2174 | 417 | walk(value); |
roland@2174 | 418 | assert(value->operand()->is_valid(), "must be evaluated now"); |
roland@2174 | 419 | } |
roland@2174 | 420 | } |
roland@2174 | 421 | |
roland@2174 | 422 | int bci = s->bci(); |
duke@435 | 423 | IRScope* scope = s->scope(); |
duke@435 | 424 | ciMethod* method = scope->method(); |
duke@435 | 425 | |
duke@435 | 426 | MethodLivenessResult liveness = method->liveness_at_bci(bci); |
duke@435 | 427 | if (bci == SynchronizationEntryBCI) { |
duke@435 | 428 | if (x->as_ExceptionObject() || x->as_Throw()) { |
duke@435 | 429 | // all locals are dead on exit from the synthetic unlocker |
duke@435 | 430 | liveness.clear(); |
duke@435 | 431 | } else { |
duke@435 | 432 | assert(x->as_MonitorEnter(), "only other case is MonitorEnter"); |
duke@435 | 433 | } |
duke@435 | 434 | } |
duke@435 | 435 | if (!liveness.is_valid()) { |
duke@435 | 436 | // Degenerate or breakpointed method. |
duke@435 | 437 | bailout("Degenerate or breakpointed method"); |
duke@435 | 438 | } else { |
duke@435 | 439 | assert((int)liveness.size() == s->locals_size(), "error in use of liveness"); |
duke@435 | 440 | for_each_local_value(s, index, value) { |
duke@435 | 441 | assert(value->subst() == value, "missed substition"); |
duke@435 | 442 | if (liveness.at(index) && !value->type()->is_illegal()) { |
duke@435 | 443 | if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) { |
duke@435 | 444 | walk(value); |
duke@435 | 445 | assert(value->operand()->is_valid(), "must be evaluated now"); |
duke@435 | 446 | } |
duke@435 | 447 | } else { |
duke@435 | 448 | // NULL out this local so that linear scan can assume that all non-NULL values are live. |
duke@435 | 449 | s->invalidate_local(index); |
duke@435 | 450 | } |
duke@435 | 451 | } |
duke@435 | 452 | } |
duke@435 | 453 | } |
duke@435 | 454 | |
roland@2174 | 455 | return new CodeEmitInfo(state, ignore_xhandler ? NULL : x->exception_handlers()); |
duke@435 | 456 | } |
duke@435 | 457 | |
duke@435 | 458 | |
duke@435 | 459 | CodeEmitInfo* LIRGenerator::state_for(Instruction* x) { |
roland@2174 | 460 | return state_for(x, x->exception_state()); |
duke@435 | 461 | } |
duke@435 | 462 | |
duke@435 | 463 | |
duke@435 | 464 | void LIRGenerator::jobject2reg_with_patching(LIR_Opr r, ciObject* obj, CodeEmitInfo* info) { |
duke@435 | 465 | if (!obj->is_loaded() || PatchALot) { |
duke@435 | 466 | assert(info != NULL, "info must be set if class is not loaded"); |
duke@435 | 467 | __ oop2reg_patch(NULL, r, info); |
duke@435 | 468 | } else { |
duke@435 | 469 | // no patching needed |
jrose@1424 | 470 | __ oop2reg(obj->constant_encoding(), r); |
duke@435 | 471 | } |
duke@435 | 472 | } |
duke@435 | 473 | |
duke@435 | 474 | |
duke@435 | 475 | void LIRGenerator::array_range_check(LIR_Opr array, LIR_Opr index, |
duke@435 | 476 | CodeEmitInfo* null_check_info, CodeEmitInfo* range_check_info) { |
duke@435 | 477 | CodeStub* stub = new RangeCheckStub(range_check_info, index); |
duke@435 | 478 | if (index->is_constant()) { |
duke@435 | 479 | cmp_mem_int(lir_cond_belowEqual, array, arrayOopDesc::length_offset_in_bytes(), |
duke@435 | 480 | index->as_jint(), null_check_info); |
duke@435 | 481 | __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch |
duke@435 | 482 | } else { |
duke@435 | 483 | cmp_reg_mem(lir_cond_aboveEqual, index, array, |
duke@435 | 484 | arrayOopDesc::length_offset_in_bytes(), T_INT, null_check_info); |
duke@435 | 485 | __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch |
duke@435 | 486 | } |
duke@435 | 487 | } |
duke@435 | 488 | |
duke@435 | 489 | |
duke@435 | 490 | void LIRGenerator::nio_range_check(LIR_Opr buffer, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) { |
duke@435 | 491 | CodeStub* stub = new RangeCheckStub(info, index, true); |
duke@435 | 492 | if (index->is_constant()) { |
duke@435 | 493 | cmp_mem_int(lir_cond_belowEqual, buffer, java_nio_Buffer::limit_offset(), index->as_jint(), info); |
duke@435 | 494 | __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch |
duke@435 | 495 | } else { |
duke@435 | 496 | cmp_reg_mem(lir_cond_aboveEqual, index, buffer, |
duke@435 | 497 | java_nio_Buffer::limit_offset(), T_INT, info); |
duke@435 | 498 | __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch |
duke@435 | 499 | } |
duke@435 | 500 | __ move(index, result); |
duke@435 | 501 | } |
duke@435 | 502 | |
duke@435 | 503 | |
duke@435 | 504 | |
duke@435 | 505 | 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 | 506 | LIR_Opr result_op = result; |
duke@435 | 507 | LIR_Opr left_op = left; |
duke@435 | 508 | LIR_Opr right_op = right; |
duke@435 | 509 | |
duke@435 | 510 | if (TwoOperandLIRForm && left_op != result_op) { |
duke@435 | 511 | assert(right_op != result_op, "malformed"); |
duke@435 | 512 | __ move(left_op, result_op); |
duke@435 | 513 | left_op = result_op; |
duke@435 | 514 | } |
duke@435 | 515 | |
duke@435 | 516 | switch(code) { |
duke@435 | 517 | case Bytecodes::_dadd: |
duke@435 | 518 | case Bytecodes::_fadd: |
duke@435 | 519 | case Bytecodes::_ladd: |
duke@435 | 520 | case Bytecodes::_iadd: __ add(left_op, right_op, result_op); break; |
duke@435 | 521 | case Bytecodes::_fmul: |
duke@435 | 522 | case Bytecodes::_lmul: __ mul(left_op, right_op, result_op); break; |
duke@435 | 523 | |
duke@435 | 524 | case Bytecodes::_dmul: |
duke@435 | 525 | { |
duke@435 | 526 | if (is_strictfp) { |
duke@435 | 527 | __ mul_strictfp(left_op, right_op, result_op, tmp_op); break; |
duke@435 | 528 | } else { |
duke@435 | 529 | __ mul(left_op, right_op, result_op); break; |
duke@435 | 530 | } |
duke@435 | 531 | } |
duke@435 | 532 | break; |
duke@435 | 533 | |
duke@435 | 534 | case Bytecodes::_imul: |
duke@435 | 535 | { |
duke@435 | 536 | bool did_strength_reduce = false; |
duke@435 | 537 | |
duke@435 | 538 | if (right->is_constant()) { |
duke@435 | 539 | int c = right->as_jint(); |
duke@435 | 540 | if (is_power_of_2(c)) { |
duke@435 | 541 | // do not need tmp here |
duke@435 | 542 | __ shift_left(left_op, exact_log2(c), result_op); |
duke@435 | 543 | did_strength_reduce = true; |
duke@435 | 544 | } else { |
duke@435 | 545 | did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op); |
duke@435 | 546 | } |
duke@435 | 547 | } |
duke@435 | 548 | // we couldn't strength reduce so just emit the multiply |
duke@435 | 549 | if (!did_strength_reduce) { |
duke@435 | 550 | __ mul(left_op, right_op, result_op); |
duke@435 | 551 | } |
duke@435 | 552 | } |
duke@435 | 553 | break; |
duke@435 | 554 | |
duke@435 | 555 | case Bytecodes::_dsub: |
duke@435 | 556 | case Bytecodes::_fsub: |
duke@435 | 557 | case Bytecodes::_lsub: |
duke@435 | 558 | case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break; |
duke@435 | 559 | |
duke@435 | 560 | case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break; |
duke@435 | 561 | // ldiv and lrem are implemented with a direct runtime call |
duke@435 | 562 | |
duke@435 | 563 | case Bytecodes::_ddiv: |
duke@435 | 564 | { |
duke@435 | 565 | if (is_strictfp) { |
duke@435 | 566 | __ div_strictfp (left_op, right_op, result_op, tmp_op); break; |
duke@435 | 567 | } else { |
duke@435 | 568 | __ div (left_op, right_op, result_op); break; |
duke@435 | 569 | } |
duke@435 | 570 | } |
duke@435 | 571 | break; |
duke@435 | 572 | |
duke@435 | 573 | case Bytecodes::_drem: |
duke@435 | 574 | case Bytecodes::_frem: __ rem (left_op, right_op, result_op); break; |
duke@435 | 575 | |
duke@435 | 576 | default: ShouldNotReachHere(); |
duke@435 | 577 | } |
duke@435 | 578 | } |
duke@435 | 579 | |
duke@435 | 580 | |
duke@435 | 581 | void LIRGenerator::arithmetic_op_int(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr tmp) { |
duke@435 | 582 | arithmetic_op(code, result, left, right, false, tmp); |
duke@435 | 583 | } |
duke@435 | 584 | |
duke@435 | 585 | |
duke@435 | 586 | void LIRGenerator::arithmetic_op_long(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) { |
duke@435 | 587 | arithmetic_op(code, result, left, right, false, LIR_OprFact::illegalOpr, info); |
duke@435 | 588 | } |
duke@435 | 589 | |
duke@435 | 590 | |
duke@435 | 591 | 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 | 592 | arithmetic_op(code, result, left, right, is_strictfp, tmp); |
duke@435 | 593 | } |
duke@435 | 594 | |
duke@435 | 595 | |
duke@435 | 596 | void LIRGenerator::shift_op(Bytecodes::Code code, LIR_Opr result_op, LIR_Opr value, LIR_Opr count, LIR_Opr tmp) { |
duke@435 | 597 | if (TwoOperandLIRForm && value != result_op) { |
duke@435 | 598 | assert(count != result_op, "malformed"); |
duke@435 | 599 | __ move(value, result_op); |
duke@435 | 600 | value = result_op; |
duke@435 | 601 | } |
duke@435 | 602 | |
duke@435 | 603 | assert(count->is_constant() || count->is_register(), "must be"); |
duke@435 | 604 | switch(code) { |
duke@435 | 605 | case Bytecodes::_ishl: |
duke@435 | 606 | case Bytecodes::_lshl: __ shift_left(value, count, result_op, tmp); break; |
duke@435 | 607 | case Bytecodes::_ishr: |
duke@435 | 608 | case Bytecodes::_lshr: __ shift_right(value, count, result_op, tmp); break; |
duke@435 | 609 | case Bytecodes::_iushr: |
duke@435 | 610 | case Bytecodes::_lushr: __ unsigned_shift_right(value, count, result_op, tmp); break; |
duke@435 | 611 | default: ShouldNotReachHere(); |
duke@435 | 612 | } |
duke@435 | 613 | } |
duke@435 | 614 | |
duke@435 | 615 | |
duke@435 | 616 | void LIRGenerator::logic_op (Bytecodes::Code code, LIR_Opr result_op, LIR_Opr left_op, LIR_Opr right_op) { |
duke@435 | 617 | if (TwoOperandLIRForm && left_op != result_op) { |
duke@435 | 618 | assert(right_op != result_op, "malformed"); |
duke@435 | 619 | __ move(left_op, result_op); |
duke@435 | 620 | left_op = result_op; |
duke@435 | 621 | } |
duke@435 | 622 | |
duke@435 | 623 | switch(code) { |
duke@435 | 624 | case Bytecodes::_iand: |
duke@435 | 625 | case Bytecodes::_land: __ logical_and(left_op, right_op, result_op); break; |
duke@435 | 626 | |
duke@435 | 627 | case Bytecodes::_ior: |
duke@435 | 628 | case Bytecodes::_lor: __ logical_or(left_op, right_op, result_op); break; |
duke@435 | 629 | |
duke@435 | 630 | case Bytecodes::_ixor: |
duke@435 | 631 | case Bytecodes::_lxor: __ logical_xor(left_op, right_op, result_op); break; |
duke@435 | 632 | |
duke@435 | 633 | default: ShouldNotReachHere(); |
duke@435 | 634 | } |
duke@435 | 635 | } |
duke@435 | 636 | |
duke@435 | 637 | |
duke@435 | 638 | 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 | 639 | if (!GenerateSynchronizationCode) return; |
duke@435 | 640 | // for slow path, use debug info for state after successful locking |
duke@435 | 641 | CodeStub* slow_path = new MonitorEnterStub(object, lock, info); |
duke@435 | 642 | __ load_stack_address_monitor(monitor_no, lock); |
duke@435 | 643 | // for handling NullPointerException, use debug info representing just the lock stack before this monitorenter |
duke@435 | 644 | __ lock_object(hdr, object, lock, scratch, slow_path, info_for_exception); |
duke@435 | 645 | } |
duke@435 | 646 | |
duke@435 | 647 | |
bobv@2036 | 648 | void LIRGenerator::monitor_exit(LIR_Opr object, LIR_Opr lock, LIR_Opr new_hdr, LIR_Opr scratch, int monitor_no) { |
duke@435 | 649 | if (!GenerateSynchronizationCode) return; |
duke@435 | 650 | // setup registers |
duke@435 | 651 | LIR_Opr hdr = lock; |
duke@435 | 652 | lock = new_hdr; |
duke@435 | 653 | CodeStub* slow_path = new MonitorExitStub(lock, UseFastLocking, monitor_no); |
duke@435 | 654 | __ load_stack_address_monitor(monitor_no, lock); |
bobv@2036 | 655 | __ unlock_object(hdr, object, lock, scratch, slow_path); |
duke@435 | 656 | } |
duke@435 | 657 | |
duke@435 | 658 | |
duke@435 | 659 | 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 | 660 | jobject2reg_with_patching(klass_reg, klass, info); |
duke@435 | 661 | // If klass is not loaded we do not know if the klass has finalizers: |
duke@435 | 662 | if (UseFastNewInstance && klass->is_loaded() |
duke@435 | 663 | && !Klass::layout_helper_needs_slow_path(klass->layout_helper())) { |
duke@435 | 664 | |
duke@435 | 665 | Runtime1::StubID stub_id = klass->is_initialized() ? Runtime1::fast_new_instance_id : Runtime1::fast_new_instance_init_check_id; |
duke@435 | 666 | |
duke@435 | 667 | CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, stub_id); |
duke@435 | 668 | |
duke@435 | 669 | assert(klass->is_loaded(), "must be loaded"); |
duke@435 | 670 | // allocate space for instance |
duke@435 | 671 | assert(klass->size_helper() >= 0, "illegal instance size"); |
duke@435 | 672 | const int instance_size = align_object_size(klass->size_helper()); |
duke@435 | 673 | __ allocate_object(dst, scratch1, scratch2, scratch3, scratch4, |
duke@435 | 674 | oopDesc::header_size(), instance_size, klass_reg, !klass->is_initialized(), slow_path); |
duke@435 | 675 | } else { |
duke@435 | 676 | CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, Runtime1::new_instance_id); |
duke@435 | 677 | __ branch(lir_cond_always, T_ILLEGAL, slow_path); |
duke@435 | 678 | __ branch_destination(slow_path->continuation()); |
duke@435 | 679 | } |
duke@435 | 680 | } |
duke@435 | 681 | |
duke@435 | 682 | |
duke@435 | 683 | static bool is_constant_zero(Instruction* inst) { |
duke@435 | 684 | IntConstant* c = inst->type()->as_IntConstant(); |
duke@435 | 685 | if (c) { |
duke@435 | 686 | return (c->value() == 0); |
duke@435 | 687 | } |
duke@435 | 688 | return false; |
duke@435 | 689 | } |
duke@435 | 690 | |
duke@435 | 691 | |
duke@435 | 692 | static bool positive_constant(Instruction* inst) { |
duke@435 | 693 | IntConstant* c = inst->type()->as_IntConstant(); |
duke@435 | 694 | if (c) { |
duke@435 | 695 | return (c->value() >= 0); |
duke@435 | 696 | } |
duke@435 | 697 | return false; |
duke@435 | 698 | } |
duke@435 | 699 | |
duke@435 | 700 | |
duke@435 | 701 | static ciArrayKlass* as_array_klass(ciType* type) { |
duke@435 | 702 | if (type != NULL && type->is_array_klass() && type->is_loaded()) { |
duke@435 | 703 | return (ciArrayKlass*)type; |
duke@435 | 704 | } else { |
duke@435 | 705 | return NULL; |
duke@435 | 706 | } |
duke@435 | 707 | } |
duke@435 | 708 | |
duke@435 | 709 | void LIRGenerator::arraycopy_helper(Intrinsic* x, int* flagsp, ciArrayKlass** expected_typep) { |
duke@435 | 710 | Instruction* src = x->argument_at(0); |
duke@435 | 711 | Instruction* src_pos = x->argument_at(1); |
duke@435 | 712 | Instruction* dst = x->argument_at(2); |
duke@435 | 713 | Instruction* dst_pos = x->argument_at(3); |
duke@435 | 714 | Instruction* length = x->argument_at(4); |
duke@435 | 715 | |
duke@435 | 716 | // first try to identify the likely type of the arrays involved |
duke@435 | 717 | ciArrayKlass* expected_type = NULL; |
duke@435 | 718 | bool is_exact = false; |
duke@435 | 719 | { |
duke@435 | 720 | ciArrayKlass* src_exact_type = as_array_klass(src->exact_type()); |
duke@435 | 721 | ciArrayKlass* src_declared_type = as_array_klass(src->declared_type()); |
duke@435 | 722 | ciArrayKlass* dst_exact_type = as_array_klass(dst->exact_type()); |
duke@435 | 723 | ciArrayKlass* dst_declared_type = as_array_klass(dst->declared_type()); |
duke@435 | 724 | if (src_exact_type != NULL && src_exact_type == dst_exact_type) { |
duke@435 | 725 | // the types exactly match so the type is fully known |
duke@435 | 726 | is_exact = true; |
duke@435 | 727 | expected_type = src_exact_type; |
duke@435 | 728 | } else if (dst_exact_type != NULL && dst_exact_type->is_obj_array_klass()) { |
duke@435 | 729 | ciArrayKlass* dst_type = (ciArrayKlass*) dst_exact_type; |
duke@435 | 730 | ciArrayKlass* src_type = NULL; |
duke@435 | 731 | if (src_exact_type != NULL && src_exact_type->is_obj_array_klass()) { |
duke@435 | 732 | src_type = (ciArrayKlass*) src_exact_type; |
duke@435 | 733 | } else if (src_declared_type != NULL && src_declared_type->is_obj_array_klass()) { |
duke@435 | 734 | src_type = (ciArrayKlass*) src_declared_type; |
duke@435 | 735 | } |
duke@435 | 736 | if (src_type != NULL) { |
duke@435 | 737 | if (src_type->element_type()->is_subtype_of(dst_type->element_type())) { |
duke@435 | 738 | is_exact = true; |
duke@435 | 739 | expected_type = dst_type; |
duke@435 | 740 | } |
duke@435 | 741 | } |
duke@435 | 742 | } |
duke@435 | 743 | // at least pass along a good guess |
duke@435 | 744 | if (expected_type == NULL) expected_type = dst_exact_type; |
duke@435 | 745 | if (expected_type == NULL) expected_type = src_declared_type; |
duke@435 | 746 | if (expected_type == NULL) expected_type = dst_declared_type; |
duke@435 | 747 | } |
duke@435 | 748 | |
duke@435 | 749 | // if a probable array type has been identified, figure out if any |
duke@435 | 750 | // of the required checks for a fast case can be elided. |
duke@435 | 751 | int flags = LIR_OpArrayCopy::all_flags; |
duke@435 | 752 | if (expected_type != NULL) { |
duke@435 | 753 | // try to skip null checks |
duke@435 | 754 | if (src->as_NewArray() != NULL) |
duke@435 | 755 | flags &= ~LIR_OpArrayCopy::src_null_check; |
duke@435 | 756 | if (dst->as_NewArray() != NULL) |
duke@435 | 757 | flags &= ~LIR_OpArrayCopy::dst_null_check; |
duke@435 | 758 | |
duke@435 | 759 | // check from incoming constant values |
duke@435 | 760 | if (positive_constant(src_pos)) |
duke@435 | 761 | flags &= ~LIR_OpArrayCopy::src_pos_positive_check; |
duke@435 | 762 | if (positive_constant(dst_pos)) |
duke@435 | 763 | flags &= ~LIR_OpArrayCopy::dst_pos_positive_check; |
duke@435 | 764 | if (positive_constant(length)) |
duke@435 | 765 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 766 | |
duke@435 | 767 | // see if the range check can be elided, which might also imply |
duke@435 | 768 | // that src or dst is non-null. |
duke@435 | 769 | ArrayLength* al = length->as_ArrayLength(); |
duke@435 | 770 | if (al != NULL) { |
duke@435 | 771 | if (al->array() == src) { |
duke@435 | 772 | // it's the length of the source array |
duke@435 | 773 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 774 | flags &= ~LIR_OpArrayCopy::src_null_check; |
duke@435 | 775 | if (is_constant_zero(src_pos)) |
duke@435 | 776 | flags &= ~LIR_OpArrayCopy::src_range_check; |
duke@435 | 777 | } |
duke@435 | 778 | if (al->array() == dst) { |
duke@435 | 779 | // it's the length of the destination array |
duke@435 | 780 | flags &= ~LIR_OpArrayCopy::length_positive_check; |
duke@435 | 781 | flags &= ~LIR_OpArrayCopy::dst_null_check; |
duke@435 | 782 | if (is_constant_zero(dst_pos)) |
duke@435 | 783 | flags &= ~LIR_OpArrayCopy::dst_range_check; |
duke@435 | 784 | } |
duke@435 | 785 | } |
duke@435 | 786 | if (is_exact) { |
duke@435 | 787 | flags &= ~LIR_OpArrayCopy::type_check; |
duke@435 | 788 | } |
duke@435 | 789 | } |
duke@435 | 790 | |
duke@435 | 791 | if (src == dst) { |
duke@435 | 792 | // moving within a single array so no type checks are needed |
duke@435 | 793 | if (flags & LIR_OpArrayCopy::type_check) { |
duke@435 | 794 | flags &= ~LIR_OpArrayCopy::type_check; |
duke@435 | 795 | } |
duke@435 | 796 | } |
duke@435 | 797 | *flagsp = flags; |
duke@435 | 798 | *expected_typep = (ciArrayKlass*)expected_type; |
duke@435 | 799 | } |
duke@435 | 800 | |
duke@435 | 801 | |
duke@435 | 802 | LIR_Opr LIRGenerator::round_item(LIR_Opr opr) { |
duke@435 | 803 | assert(opr->is_register(), "why spill if item is not register?"); |
duke@435 | 804 | |
duke@435 | 805 | if (RoundFPResults && UseSSE < 1 && opr->is_single_fpu()) { |
duke@435 | 806 | LIR_Opr result = new_register(T_FLOAT); |
duke@435 | 807 | set_vreg_flag(result, must_start_in_memory); |
duke@435 | 808 | assert(opr->is_register(), "only a register can be spilled"); |
duke@435 | 809 | assert(opr->value_type()->is_float(), "rounding only for floats available"); |
duke@435 | 810 | __ roundfp(opr, LIR_OprFact::illegalOpr, result); |
duke@435 | 811 | return result; |
duke@435 | 812 | } |
duke@435 | 813 | return opr; |
duke@435 | 814 | } |
duke@435 | 815 | |
duke@435 | 816 | |
duke@435 | 817 | LIR_Opr LIRGenerator::force_to_spill(LIR_Opr value, BasicType t) { |
duke@435 | 818 | assert(type2size[t] == type2size[value->type()], "size mismatch"); |
duke@435 | 819 | if (!value->is_register()) { |
duke@435 | 820 | // force into a register |
duke@435 | 821 | LIR_Opr r = new_register(value->type()); |
duke@435 | 822 | __ move(value, r); |
duke@435 | 823 | value = r; |
duke@435 | 824 | } |
duke@435 | 825 | |
duke@435 | 826 | // create a spill location |
duke@435 | 827 | LIR_Opr tmp = new_register(t); |
duke@435 | 828 | set_vreg_flag(tmp, LIRGenerator::must_start_in_memory); |
duke@435 | 829 | |
duke@435 | 830 | // move from register to spill |
duke@435 | 831 | __ move(value, tmp); |
duke@435 | 832 | return tmp; |
duke@435 | 833 | } |
duke@435 | 834 | |
duke@435 | 835 | void LIRGenerator::profile_branch(If* if_instr, If::Condition cond) { |
duke@435 | 836 | if (if_instr->should_profile()) { |
duke@435 | 837 | ciMethod* method = if_instr->profiled_method(); |
duke@435 | 838 | assert(method != NULL, "method should be set if branch is profiled"); |
iveresov@2349 | 839 | ciMethodData* md = method->method_data_or_null(); |
iveresov@2349 | 840 | assert(md != NULL, "Sanity"); |
duke@435 | 841 | ciProfileData* data = md->bci_to_data(if_instr->profiled_bci()); |
duke@435 | 842 | assert(data != NULL, "must have profiling data"); |
duke@435 | 843 | assert(data->is_BranchData(), "need BranchData for two-way branches"); |
duke@435 | 844 | int taken_count_offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); |
duke@435 | 845 | int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); |
iveresov@2138 | 846 | if (if_instr->is_swapped()) { |
iveresov@2138 | 847 | int t = taken_count_offset; |
iveresov@2138 | 848 | taken_count_offset = not_taken_count_offset; |
iveresov@2138 | 849 | not_taken_count_offset = t; |
iveresov@2138 | 850 | } |
iveresov@2138 | 851 | |
duke@435 | 852 | LIR_Opr md_reg = new_register(T_OBJECT); |
iveresov@2138 | 853 | __ oop2reg(md->constant_encoding(), md_reg); |
iveresov@2138 | 854 | |
iveresov@2138 | 855 | LIR_Opr data_offset_reg = new_pointer_register(); |
duke@435 | 856 | __ cmove(lir_cond(cond), |
iveresov@2138 | 857 | LIR_OprFact::intptrConst(taken_count_offset), |
iveresov@2138 | 858 | LIR_OprFact::intptrConst(not_taken_count_offset), |
iveresov@2412 | 859 | data_offset_reg, as_BasicType(if_instr->x()->type())); |
iveresov@2138 | 860 | |
iveresov@2138 | 861 | // MDO cells are intptr_t, so the data_reg width is arch-dependent. |
iveresov@2138 | 862 | LIR_Opr data_reg = new_pointer_register(); |
iveresov@2138 | 863 | LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, data_reg->type()); |
iveresov@2344 | 864 | __ move(data_addr, data_reg); |
iveresov@2138 | 865 | // Use leal instead of add to avoid destroying condition codes on x86 |
duke@435 | 866 | LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT); |
duke@435 | 867 | __ leal(LIR_OprFact::address(fake_incr_value), data_reg); |
iveresov@2344 | 868 | __ move(data_reg, data_addr); |
duke@435 | 869 | } |
duke@435 | 870 | } |
duke@435 | 871 | |
duke@435 | 872 | // Phi technique: |
duke@435 | 873 | // This is about passing live values from one basic block to the other. |
duke@435 | 874 | // In code generated with Java it is rather rare that more than one |
duke@435 | 875 | // value is on the stack from one basic block to the other. |
duke@435 | 876 | // We optimize our technique for efficient passing of one value |
duke@435 | 877 | // (of type long, int, double..) but it can be extended. |
duke@435 | 878 | // When entering or leaving a basic block, all registers and all spill |
duke@435 | 879 | // slots are release and empty. We use the released registers |
duke@435 | 880 | // and spill slots to pass the live values from one block |
duke@435 | 881 | // to the other. The topmost value, i.e., the value on TOS of expression |
duke@435 | 882 | // stack is passed in registers. All other values are stored in spilling |
duke@435 | 883 | // area. Every Phi has an index which designates its spill slot |
duke@435 | 884 | // At exit of a basic block, we fill the register(s) and spill slots. |
duke@435 | 885 | // At entry of a basic block, the block_prolog sets up the content of phi nodes |
duke@435 | 886 | // and locks necessary registers and spilling slots. |
duke@435 | 887 | |
duke@435 | 888 | |
duke@435 | 889 | // move current value to referenced phi function |
duke@435 | 890 | void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_val) { |
duke@435 | 891 | Phi* phi = sux_val->as_Phi(); |
duke@435 | 892 | // cur_val can be null without phi being null in conjunction with inlining |
duke@435 | 893 | if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) { |
duke@435 | 894 | LIR_Opr operand = cur_val->operand(); |
duke@435 | 895 | if (cur_val->operand()->is_illegal()) { |
duke@435 | 896 | assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL, |
duke@435 | 897 | "these can be produced lazily"); |
duke@435 | 898 | operand = operand_for_instruction(cur_val); |
duke@435 | 899 | } |
duke@435 | 900 | resolver->move(operand, operand_for_instruction(phi)); |
duke@435 | 901 | } |
duke@435 | 902 | } |
duke@435 | 903 | |
duke@435 | 904 | |
duke@435 | 905 | // Moves all stack values into their PHI position |
duke@435 | 906 | void LIRGenerator::move_to_phi(ValueStack* cur_state) { |
duke@435 | 907 | BlockBegin* bb = block(); |
duke@435 | 908 | if (bb->number_of_sux() == 1) { |
duke@435 | 909 | BlockBegin* sux = bb->sux_at(0); |
duke@435 | 910 | assert(sux->number_of_preds() > 0, "invalid CFG"); |
duke@435 | 911 | |
duke@435 | 912 | // a block with only one predecessor never has phi functions |
duke@435 | 913 | if (sux->number_of_preds() > 1) { |
duke@435 | 914 | int max_phis = cur_state->stack_size() + cur_state->locals_size(); |
duke@435 | 915 | PhiResolver resolver(this, _virtual_register_number + max_phis * 2); |
duke@435 | 916 | |
duke@435 | 917 | ValueStack* sux_state = sux->state(); |
duke@435 | 918 | Value sux_value; |
duke@435 | 919 | int index; |
duke@435 | 920 | |
roland@2174 | 921 | assert(cur_state->scope() == sux_state->scope(), "not matching"); |
roland@2174 | 922 | assert(cur_state->locals_size() == sux_state->locals_size(), "not matching"); |
roland@2174 | 923 | assert(cur_state->stack_size() == sux_state->stack_size(), "not matching"); |
roland@2174 | 924 | |
duke@435 | 925 | for_each_stack_value(sux_state, index, sux_value) { |
duke@435 | 926 | move_to_phi(&resolver, cur_state->stack_at(index), sux_value); |
duke@435 | 927 | } |
duke@435 | 928 | |
duke@435 | 929 | for_each_local_value(sux_state, index, sux_value) { |
duke@435 | 930 | move_to_phi(&resolver, cur_state->local_at(index), sux_value); |
duke@435 | 931 | } |
duke@435 | 932 | |
duke@435 | 933 | assert(cur_state->caller_state() == sux_state->caller_state(), "caller states must be equal"); |
duke@435 | 934 | } |
duke@435 | 935 | } |
duke@435 | 936 | } |
duke@435 | 937 | |
duke@435 | 938 | |
duke@435 | 939 | LIR_Opr LIRGenerator::new_register(BasicType type) { |
duke@435 | 940 | int vreg = _virtual_register_number; |
duke@435 | 941 | // add a little fudge factor for the bailout, since the bailout is |
duke@435 | 942 | // only checked periodically. This gives a few extra registers to |
duke@435 | 943 | // hand out before we really run out, which helps us keep from |
duke@435 | 944 | // tripping over assertions. |
duke@435 | 945 | if (vreg + 20 >= LIR_OprDesc::vreg_max) { |
duke@435 | 946 | bailout("out of virtual registers"); |
duke@435 | 947 | if (vreg + 2 >= LIR_OprDesc::vreg_max) { |
duke@435 | 948 | // wrap it around |
duke@435 | 949 | _virtual_register_number = LIR_OprDesc::vreg_base; |
duke@435 | 950 | } |
duke@435 | 951 | } |
duke@435 | 952 | _virtual_register_number += 1; |
duke@435 | 953 | return LIR_OprFact::virtual_register(vreg, type); |
duke@435 | 954 | } |
duke@435 | 955 | |
duke@435 | 956 | |
duke@435 | 957 | // Try to lock using register in hint |
duke@435 | 958 | LIR_Opr LIRGenerator::rlock(Value instr) { |
duke@435 | 959 | return new_register(instr->type()); |
duke@435 | 960 | } |
duke@435 | 961 | |
duke@435 | 962 | |
duke@435 | 963 | // does an rlock and sets result |
duke@435 | 964 | LIR_Opr LIRGenerator::rlock_result(Value x) { |
duke@435 | 965 | LIR_Opr reg = rlock(x); |
duke@435 | 966 | set_result(x, reg); |
duke@435 | 967 | return reg; |
duke@435 | 968 | } |
duke@435 | 969 | |
duke@435 | 970 | |
duke@435 | 971 | // does an rlock and sets result |
duke@435 | 972 | LIR_Opr LIRGenerator::rlock_result(Value x, BasicType type) { |
duke@435 | 973 | LIR_Opr reg; |
duke@435 | 974 | switch (type) { |
duke@435 | 975 | case T_BYTE: |
duke@435 | 976 | case T_BOOLEAN: |
duke@435 | 977 | reg = rlock_byte(type); |
duke@435 | 978 | break; |
duke@435 | 979 | default: |
duke@435 | 980 | reg = rlock(x); |
duke@435 | 981 | break; |
duke@435 | 982 | } |
duke@435 | 983 | |
duke@435 | 984 | set_result(x, reg); |
duke@435 | 985 | return reg; |
duke@435 | 986 | } |
duke@435 | 987 | |
duke@435 | 988 | |
duke@435 | 989 | //--------------------------------------------------------------------- |
duke@435 | 990 | ciObject* LIRGenerator::get_jobject_constant(Value value) { |
duke@435 | 991 | ObjectType* oc = value->type()->as_ObjectType(); |
duke@435 | 992 | if (oc) { |
duke@435 | 993 | return oc->constant_value(); |
duke@435 | 994 | } |
duke@435 | 995 | return NULL; |
duke@435 | 996 | } |
duke@435 | 997 | |
duke@435 | 998 | |
duke@435 | 999 | void LIRGenerator::do_ExceptionObject(ExceptionObject* x) { |
duke@435 | 1000 | assert(block()->is_set(BlockBegin::exception_entry_flag), "ExceptionObject only allowed in exception handler block"); |
duke@435 | 1001 | assert(block()->next() == x, "ExceptionObject must be first instruction of block"); |
duke@435 | 1002 | |
duke@435 | 1003 | // no moves are created for phi functions at the begin of exception |
duke@435 | 1004 | // handlers, so assign operands manually here |
duke@435 | 1005 | for_each_phi_fun(block(), phi, |
duke@435 | 1006 | operand_for_instruction(phi)); |
duke@435 | 1007 | |
duke@435 | 1008 | LIR_Opr thread_reg = getThreadPointer(); |
iveresov@2344 | 1009 | __ move_wide(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT), |
iveresov@2344 | 1010 | exceptionOopOpr()); |
iveresov@2344 | 1011 | __ move_wide(LIR_OprFact::oopConst(NULL), |
iveresov@2344 | 1012 | new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT)); |
iveresov@2344 | 1013 | __ move_wide(LIR_OprFact::oopConst(NULL), |
iveresov@2344 | 1014 | new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT)); |
duke@435 | 1015 | |
duke@435 | 1016 | LIR_Opr result = new_register(T_OBJECT); |
duke@435 | 1017 | __ move(exceptionOopOpr(), result); |
duke@435 | 1018 | set_result(x, result); |
duke@435 | 1019 | } |
duke@435 | 1020 | |
duke@435 | 1021 | |
duke@435 | 1022 | //---------------------------------------------------------------------- |
duke@435 | 1023 | //---------------------------------------------------------------------- |
duke@435 | 1024 | //---------------------------------------------------------------------- |
duke@435 | 1025 | //---------------------------------------------------------------------- |
duke@435 | 1026 | // visitor functions |
duke@435 | 1027 | //---------------------------------------------------------------------- |
duke@435 | 1028 | //---------------------------------------------------------------------- |
duke@435 | 1029 | //---------------------------------------------------------------------- |
duke@435 | 1030 | //---------------------------------------------------------------------- |
duke@435 | 1031 | |
duke@435 | 1032 | void LIRGenerator::do_Phi(Phi* x) { |
duke@435 | 1033 | // phi functions are never visited directly |
duke@435 | 1034 | ShouldNotReachHere(); |
duke@435 | 1035 | } |
duke@435 | 1036 | |
duke@435 | 1037 | |
duke@435 | 1038 | // Code for a constant is generated lazily unless the constant is frequently used and can't be inlined. |
duke@435 | 1039 | void LIRGenerator::do_Constant(Constant* x) { |
roland@2174 | 1040 | if (x->state_before() != NULL) { |
duke@435 | 1041 | // Any constant with a ValueStack requires patching so emit the patch here |
duke@435 | 1042 | LIR_Opr reg = rlock_result(x); |
roland@2174 | 1043 | CodeEmitInfo* info = state_for(x, x->state_before()); |
duke@435 | 1044 | __ oop2reg_patch(NULL, reg, info); |
duke@435 | 1045 | } else if (x->use_count() > 1 && !can_inline_as_constant(x)) { |
duke@435 | 1046 | if (!x->is_pinned()) { |
duke@435 | 1047 | // unpinned constants are handled specially so that they can be |
duke@435 | 1048 | // put into registers when they are used multiple times within a |
duke@435 | 1049 | // block. After the block completes their operand will be |
duke@435 | 1050 | // cleared so that other blocks can't refer to that register. |
duke@435 | 1051 | set_result(x, load_constant(x)); |
duke@435 | 1052 | } else { |
duke@435 | 1053 | LIR_Opr res = x->operand(); |
duke@435 | 1054 | if (!res->is_valid()) { |
duke@435 | 1055 | res = LIR_OprFact::value_type(x->type()); |
duke@435 | 1056 | } |
duke@435 | 1057 | if (res->is_constant()) { |
duke@435 | 1058 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1059 | __ move(res, reg); |
duke@435 | 1060 | } else { |
duke@435 | 1061 | set_result(x, res); |
duke@435 | 1062 | } |
duke@435 | 1063 | } |
duke@435 | 1064 | } else { |
duke@435 | 1065 | set_result(x, LIR_OprFact::value_type(x->type())); |
duke@435 | 1066 | } |
duke@435 | 1067 | } |
duke@435 | 1068 | |
duke@435 | 1069 | |
duke@435 | 1070 | void LIRGenerator::do_Local(Local* x) { |
duke@435 | 1071 | // operand_for_instruction has the side effect of setting the result |
duke@435 | 1072 | // so there's no need to do it here. |
duke@435 | 1073 | operand_for_instruction(x); |
duke@435 | 1074 | } |
duke@435 | 1075 | |
duke@435 | 1076 | |
duke@435 | 1077 | void LIRGenerator::do_IfInstanceOf(IfInstanceOf* x) { |
duke@435 | 1078 | Unimplemented(); |
duke@435 | 1079 | } |
duke@435 | 1080 | |
duke@435 | 1081 | |
duke@435 | 1082 | void LIRGenerator::do_Return(Return* x) { |
kvn@1215 | 1083 | if (compilation()->env()->dtrace_method_probes()) { |
duke@435 | 1084 | BasicTypeList signature; |
iveresov@2344 | 1085 | signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
duke@435 | 1086 | signature.append(T_OBJECT); // methodOop |
duke@435 | 1087 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 1088 | args->append(getThreadPointer()); |
duke@435 | 1089 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 1090 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 1091 | args->append(meth); |
duke@435 | 1092 | call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL); |
duke@435 | 1093 | } |
duke@435 | 1094 | |
duke@435 | 1095 | if (x->type()->is_void()) { |
duke@435 | 1096 | __ return_op(LIR_OprFact::illegalOpr); |
duke@435 | 1097 | } else { |
duke@435 | 1098 | LIR_Opr reg = result_register_for(x->type(), /*callee=*/true); |
duke@435 | 1099 | LIRItem result(x->result(), this); |
duke@435 | 1100 | |
duke@435 | 1101 | result.load_item_force(reg); |
duke@435 | 1102 | __ return_op(result.result()); |
duke@435 | 1103 | } |
duke@435 | 1104 | set_no_result(x); |
duke@435 | 1105 | } |
duke@435 | 1106 | |
johnc@2781 | 1107 | // Examble: ref.get() |
johnc@2781 | 1108 | // Combination of LoadField and g1 pre-write barrier |
johnc@2781 | 1109 | void LIRGenerator::do_Reference_get(Intrinsic* x) { |
johnc@2781 | 1110 | |
johnc@2781 | 1111 | const int referent_offset = java_lang_ref_Reference::referent_offset; |
johnc@2781 | 1112 | guarantee(referent_offset > 0, "referent offset not initialized"); |
johnc@2781 | 1113 | |
johnc@2781 | 1114 | assert(x->number_of_arguments() == 1, "wrong type"); |
johnc@2781 | 1115 | |
johnc@2781 | 1116 | LIRItem reference(x->argument_at(0), this); |
johnc@2781 | 1117 | reference.load_item(); |
johnc@2781 | 1118 | |
johnc@2781 | 1119 | // need to perform the null check on the reference objecy |
johnc@2781 | 1120 | CodeEmitInfo* info = NULL; |
johnc@2781 | 1121 | if (x->needs_null_check()) { |
johnc@2781 | 1122 | info = state_for(x); |
johnc@2781 | 1123 | } |
johnc@2781 | 1124 | |
johnc@2781 | 1125 | LIR_Address* referent_field_adr = |
johnc@2781 | 1126 | new LIR_Address(reference.result(), referent_offset, T_OBJECT); |
johnc@2781 | 1127 | |
johnc@2781 | 1128 | LIR_Opr result = rlock_result(x); |
johnc@2781 | 1129 | |
johnc@2781 | 1130 | __ load(referent_field_adr, result, info); |
johnc@2781 | 1131 | |
johnc@2781 | 1132 | // Register the value in the referent field with the pre-barrier |
johnc@2781 | 1133 | pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */, |
johnc@2781 | 1134 | result /* pre_val */, |
johnc@2781 | 1135 | false /* do_load */, |
johnc@2781 | 1136 | false /* patch */, |
johnc@2781 | 1137 | NULL /* info */); |
johnc@2781 | 1138 | } |
duke@435 | 1139 | |
duke@435 | 1140 | // Example: object.getClass () |
duke@435 | 1141 | void LIRGenerator::do_getClass(Intrinsic* x) { |
duke@435 | 1142 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 1143 | |
duke@435 | 1144 | LIRItem rcvr(x->argument_at(0), this); |
duke@435 | 1145 | rcvr.load_item(); |
duke@435 | 1146 | LIR_Opr result = rlock_result(x); |
duke@435 | 1147 | |
duke@435 | 1148 | // need to perform the null check on the rcvr |
duke@435 | 1149 | CodeEmitInfo* info = NULL; |
duke@435 | 1150 | if (x->needs_null_check()) { |
roland@2174 | 1151 | info = state_for(x); |
duke@435 | 1152 | } |
duke@435 | 1153 | __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_OBJECT), result, info); |
iveresov@2344 | 1154 | __ move_wide(new LIR_Address(result, Klass::java_mirror_offset_in_bytes() + |
iveresov@2344 | 1155 | klassOopDesc::klass_part_offset_in_bytes(), T_OBJECT), result); |
duke@435 | 1156 | } |
duke@435 | 1157 | |
duke@435 | 1158 | |
duke@435 | 1159 | // Example: Thread.currentThread() |
duke@435 | 1160 | void LIRGenerator::do_currentThread(Intrinsic* x) { |
duke@435 | 1161 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 1162 | LIR_Opr reg = rlock_result(x); |
iveresov@2344 | 1163 | __ move_wide(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg); |
duke@435 | 1164 | } |
duke@435 | 1165 | |
duke@435 | 1166 | |
duke@435 | 1167 | void LIRGenerator::do_RegisterFinalizer(Intrinsic* x) { |
duke@435 | 1168 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 1169 | LIRItem receiver(x->argument_at(0), this); |
duke@435 | 1170 | |
duke@435 | 1171 | receiver.load_item(); |
duke@435 | 1172 | BasicTypeList signature; |
duke@435 | 1173 | signature.append(T_OBJECT); // receiver |
duke@435 | 1174 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 1175 | args->append(receiver.result()); |
duke@435 | 1176 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 1177 | call_runtime(&signature, args, |
duke@435 | 1178 | CAST_FROM_FN_PTR(address, Runtime1::entry_for(Runtime1::register_finalizer_id)), |
duke@435 | 1179 | voidType, info); |
duke@435 | 1180 | |
duke@435 | 1181 | set_no_result(x); |
duke@435 | 1182 | } |
duke@435 | 1183 | |
duke@435 | 1184 | |
duke@435 | 1185 | //------------------------local access-------------------------------------- |
duke@435 | 1186 | |
duke@435 | 1187 | LIR_Opr LIRGenerator::operand_for_instruction(Instruction* x) { |
duke@435 | 1188 | if (x->operand()->is_illegal()) { |
duke@435 | 1189 | Constant* c = x->as_Constant(); |
duke@435 | 1190 | if (c != NULL) { |
duke@435 | 1191 | x->set_operand(LIR_OprFact::value_type(c->type())); |
duke@435 | 1192 | } else { |
duke@435 | 1193 | assert(x->as_Phi() || x->as_Local() != NULL, "only for Phi and Local"); |
duke@435 | 1194 | // allocate a virtual register for this local or phi |
duke@435 | 1195 | x->set_operand(rlock(x)); |
duke@435 | 1196 | _instruction_for_operand.at_put_grow(x->operand()->vreg_number(), x, NULL); |
duke@435 | 1197 | } |
duke@435 | 1198 | } |
duke@435 | 1199 | return x->operand(); |
duke@435 | 1200 | } |
duke@435 | 1201 | |
duke@435 | 1202 | |
duke@435 | 1203 | Instruction* LIRGenerator::instruction_for_opr(LIR_Opr opr) { |
duke@435 | 1204 | if (opr->is_virtual()) { |
duke@435 | 1205 | return instruction_for_vreg(opr->vreg_number()); |
duke@435 | 1206 | } |
duke@435 | 1207 | return NULL; |
duke@435 | 1208 | } |
duke@435 | 1209 | |
duke@435 | 1210 | |
duke@435 | 1211 | Instruction* LIRGenerator::instruction_for_vreg(int reg_num) { |
duke@435 | 1212 | if (reg_num < _instruction_for_operand.length()) { |
duke@435 | 1213 | return _instruction_for_operand.at(reg_num); |
duke@435 | 1214 | } |
duke@435 | 1215 | return NULL; |
duke@435 | 1216 | } |
duke@435 | 1217 | |
duke@435 | 1218 | |
duke@435 | 1219 | void LIRGenerator::set_vreg_flag(int vreg_num, VregFlag f) { |
duke@435 | 1220 | if (_vreg_flags.size_in_bits() == 0) { |
duke@435 | 1221 | BitMap2D temp(100, num_vreg_flags); |
duke@435 | 1222 | temp.clear(); |
duke@435 | 1223 | _vreg_flags = temp; |
duke@435 | 1224 | } |
duke@435 | 1225 | _vreg_flags.at_put_grow(vreg_num, f, true); |
duke@435 | 1226 | } |
duke@435 | 1227 | |
duke@435 | 1228 | bool LIRGenerator::is_vreg_flag_set(int vreg_num, VregFlag f) { |
duke@435 | 1229 | if (!_vreg_flags.is_valid_index(vreg_num, f)) { |
duke@435 | 1230 | return false; |
duke@435 | 1231 | } |
duke@435 | 1232 | return _vreg_flags.at(vreg_num, f); |
duke@435 | 1233 | } |
duke@435 | 1234 | |
duke@435 | 1235 | |
duke@435 | 1236 | // Block local constant handling. This code is useful for keeping |
duke@435 | 1237 | // unpinned constants and constants which aren't exposed in the IR in |
duke@435 | 1238 | // registers. Unpinned Constant instructions have their operands |
duke@435 | 1239 | // cleared when the block is finished so that other blocks can't end |
duke@435 | 1240 | // up referring to their registers. |
duke@435 | 1241 | |
duke@435 | 1242 | LIR_Opr LIRGenerator::load_constant(Constant* x) { |
duke@435 | 1243 | assert(!x->is_pinned(), "only for unpinned constants"); |
duke@435 | 1244 | _unpinned_constants.append(x); |
duke@435 | 1245 | return load_constant(LIR_OprFact::value_type(x->type())->as_constant_ptr()); |
duke@435 | 1246 | } |
duke@435 | 1247 | |
duke@435 | 1248 | |
duke@435 | 1249 | LIR_Opr LIRGenerator::load_constant(LIR_Const* c) { |
duke@435 | 1250 | BasicType t = c->type(); |
duke@435 | 1251 | for (int i = 0; i < _constants.length(); i++) { |
duke@435 | 1252 | LIR_Const* other = _constants.at(i); |
duke@435 | 1253 | if (t == other->type()) { |
duke@435 | 1254 | switch (t) { |
duke@435 | 1255 | case T_INT: |
duke@435 | 1256 | case T_FLOAT: |
duke@435 | 1257 | if (c->as_jint_bits() != other->as_jint_bits()) continue; |
duke@435 | 1258 | break; |
duke@435 | 1259 | case T_LONG: |
duke@435 | 1260 | case T_DOUBLE: |
never@921 | 1261 | if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue; |
never@921 | 1262 | if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue; |
duke@435 | 1263 | break; |
duke@435 | 1264 | case T_OBJECT: |
duke@435 | 1265 | if (c->as_jobject() != other->as_jobject()) continue; |
duke@435 | 1266 | break; |
duke@435 | 1267 | } |
duke@435 | 1268 | return _reg_for_constants.at(i); |
duke@435 | 1269 | } |
duke@435 | 1270 | } |
duke@435 | 1271 | |
duke@435 | 1272 | LIR_Opr result = new_register(t); |
duke@435 | 1273 | __ move((LIR_Opr)c, result); |
duke@435 | 1274 | _constants.append(c); |
duke@435 | 1275 | _reg_for_constants.append(result); |
duke@435 | 1276 | return result; |
duke@435 | 1277 | } |
duke@435 | 1278 | |
duke@435 | 1279 | // Various barriers |
duke@435 | 1280 | |
johnc@2781 | 1281 | void LIRGenerator::pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
johnc@2781 | 1282 | bool do_load, bool patch, CodeEmitInfo* info) { |
ysr@777 | 1283 | // Do the pre-write barrier, if any. |
ysr@777 | 1284 | switch (_bs->kind()) { |
ysr@777 | 1285 | #ifndef SERIALGC |
ysr@777 | 1286 | case BarrierSet::G1SATBCT: |
ysr@777 | 1287 | case BarrierSet::G1SATBCTLogging: |
johnc@2781 | 1288 | G1SATBCardTableModRef_pre_barrier(addr_opr, pre_val, do_load, patch, info); |
ysr@777 | 1289 | break; |
ysr@777 | 1290 | #endif // SERIALGC |
ysr@777 | 1291 | case BarrierSet::CardTableModRef: |
ysr@777 | 1292 | case BarrierSet::CardTableExtension: |
ysr@777 | 1293 | // No pre barriers |
ysr@777 | 1294 | break; |
ysr@777 | 1295 | case BarrierSet::ModRef: |
ysr@777 | 1296 | case BarrierSet::Other: |
ysr@777 | 1297 | // No pre barriers |
ysr@777 | 1298 | break; |
ysr@777 | 1299 | default : |
ysr@777 | 1300 | ShouldNotReachHere(); |
ysr@777 | 1301 | |
ysr@777 | 1302 | } |
ysr@777 | 1303 | } |
ysr@777 | 1304 | |
duke@435 | 1305 | void LIRGenerator::post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
ysr@777 | 1306 | switch (_bs->kind()) { |
ysr@777 | 1307 | #ifndef SERIALGC |
ysr@777 | 1308 | case BarrierSet::G1SATBCT: |
ysr@777 | 1309 | case BarrierSet::G1SATBCTLogging: |
ysr@777 | 1310 | G1SATBCardTableModRef_post_barrier(addr, new_val); |
ysr@777 | 1311 | break; |
ysr@777 | 1312 | #endif // SERIALGC |
duke@435 | 1313 | case BarrierSet::CardTableModRef: |
duke@435 | 1314 | case BarrierSet::CardTableExtension: |
duke@435 | 1315 | CardTableModRef_post_barrier(addr, new_val); |
duke@435 | 1316 | break; |
duke@435 | 1317 | case BarrierSet::ModRef: |
duke@435 | 1318 | case BarrierSet::Other: |
duke@435 | 1319 | // No post barriers |
duke@435 | 1320 | break; |
duke@435 | 1321 | default : |
duke@435 | 1322 | ShouldNotReachHere(); |
duke@435 | 1323 | } |
duke@435 | 1324 | } |
duke@435 | 1325 | |
ysr@777 | 1326 | //////////////////////////////////////////////////////////////////////// |
ysr@777 | 1327 | #ifndef SERIALGC |
ysr@777 | 1328 | |
johnc@2781 | 1329 | void LIRGenerator::G1SATBCardTableModRef_pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val, |
johnc@2781 | 1330 | bool do_load, bool patch, CodeEmitInfo* info) { |
ysr@777 | 1331 | // First we test whether marking is in progress. |
ysr@777 | 1332 | BasicType flag_type; |
ysr@777 | 1333 | if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { |
ysr@777 | 1334 | flag_type = T_INT; |
ysr@777 | 1335 | } else { |
ysr@777 | 1336 | guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, |
ysr@777 | 1337 | "Assumption"); |
ysr@777 | 1338 | flag_type = T_BYTE; |
ysr@777 | 1339 | } |
ysr@777 | 1340 | LIR_Opr thrd = getThreadPointer(); |
ysr@777 | 1341 | LIR_Address* mark_active_flag_addr = |
ysr@777 | 1342 | new LIR_Address(thrd, |
ysr@777 | 1343 | in_bytes(JavaThread::satb_mark_queue_offset() + |
ysr@777 | 1344 | PtrQueue::byte_offset_of_active()), |
ysr@777 | 1345 | flag_type); |
ysr@777 | 1346 | // Read the marking-in-progress flag. |
ysr@777 | 1347 | LIR_Opr flag_val = new_register(T_INT); |
ysr@777 | 1348 | __ load(mark_active_flag_addr, flag_val); |
ysr@777 | 1349 | __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0)); |
johnc@2781 | 1350 | |
johnc@2781 | 1351 | LIR_PatchCode pre_val_patch_code = lir_patch_none; |
johnc@2781 | 1352 | |
johnc@2781 | 1353 | CodeStub* slow; |
johnc@2781 | 1354 | |
johnc@2781 | 1355 | if (do_load) { |
johnc@2781 | 1356 | assert(pre_val == LIR_OprFact::illegalOpr, "sanity"); |
johnc@2781 | 1357 | assert(addr_opr != LIR_OprFact::illegalOpr, "sanity"); |
johnc@2781 | 1358 | |
johnc@2781 | 1359 | if (patch) |
johnc@2781 | 1360 | pre_val_patch_code = lir_patch_normal; |
johnc@2781 | 1361 | |
johnc@2781 | 1362 | pre_val = new_register(T_OBJECT); |
johnc@2781 | 1363 | |
johnc@2781 | 1364 | if (!addr_opr->is_address()) { |
johnc@2781 | 1365 | assert(addr_opr->is_register(), "must be"); |
johnc@2781 | 1366 | addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, T_OBJECT)); |
johnc@2781 | 1367 | } |
johnc@2781 | 1368 | slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code, info); |
johnc@2781 | 1369 | } else { |
johnc@2781 | 1370 | assert(addr_opr == LIR_OprFact::illegalOpr, "sanity"); |
johnc@2781 | 1371 | assert(pre_val->is_register(), "must be"); |
johnc@2781 | 1372 | assert(pre_val->type() == T_OBJECT, "must be an object"); |
johnc@2781 | 1373 | assert(info == NULL, "sanity"); |
johnc@2781 | 1374 | |
johnc@2781 | 1375 | slow = new G1PreBarrierStub(pre_val); |
ysr@777 | 1376 | } |
johnc@2781 | 1377 | |
ysr@777 | 1378 | __ branch(lir_cond_notEqual, T_INT, slow); |
ysr@777 | 1379 | __ branch_destination(slow->continuation()); |
ysr@777 | 1380 | } |
ysr@777 | 1381 | |
ysr@777 | 1382 | void LIRGenerator::G1SATBCardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
ysr@777 | 1383 | // If the "new_val" is a constant NULL, no barrier is necessary. |
ysr@777 | 1384 | if (new_val->is_constant() && |
ysr@777 | 1385 | new_val->as_constant_ptr()->as_jobject() == NULL) return; |
ysr@777 | 1386 | |
ysr@777 | 1387 | if (!new_val->is_register()) { |
iveresov@1927 | 1388 | LIR_Opr new_val_reg = new_register(T_OBJECT); |
ysr@777 | 1389 | if (new_val->is_constant()) { |
ysr@777 | 1390 | __ move(new_val, new_val_reg); |
ysr@777 | 1391 | } else { |
ysr@777 | 1392 | __ leal(new_val, new_val_reg); |
ysr@777 | 1393 | } |
ysr@777 | 1394 | new_val = new_val_reg; |
ysr@777 | 1395 | } |
ysr@777 | 1396 | assert(new_val->is_register(), "must be a register at this point"); |
ysr@777 | 1397 | |
ysr@777 | 1398 | if (addr->is_address()) { |
ysr@777 | 1399 | LIR_Address* address = addr->as_address_ptr(); |
iveresov@1927 | 1400 | LIR_Opr ptr = new_register(T_OBJECT); |
ysr@777 | 1401 | if (!address->index()->is_valid() && address->disp() == 0) { |
ysr@777 | 1402 | __ move(address->base(), ptr); |
ysr@777 | 1403 | } else { |
ysr@777 | 1404 | assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); |
ysr@777 | 1405 | __ leal(addr, ptr); |
ysr@777 | 1406 | } |
ysr@777 | 1407 | addr = ptr; |
ysr@777 | 1408 | } |
ysr@777 | 1409 | assert(addr->is_register(), "must be a register at this point"); |
ysr@777 | 1410 | |
ysr@777 | 1411 | LIR_Opr xor_res = new_pointer_register(); |
ysr@777 | 1412 | LIR_Opr xor_shift_res = new_pointer_register(); |
ysr@777 | 1413 | if (TwoOperandLIRForm ) { |
ysr@777 | 1414 | __ move(addr, xor_res); |
ysr@777 | 1415 | __ logical_xor(xor_res, new_val, xor_res); |
ysr@777 | 1416 | __ move(xor_res, xor_shift_res); |
ysr@777 | 1417 | __ unsigned_shift_right(xor_shift_res, |
ysr@777 | 1418 | LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), |
ysr@777 | 1419 | xor_shift_res, |
ysr@777 | 1420 | LIR_OprDesc::illegalOpr()); |
ysr@777 | 1421 | } else { |
ysr@777 | 1422 | __ logical_xor(addr, new_val, xor_res); |
ysr@777 | 1423 | __ unsigned_shift_right(xor_res, |
ysr@777 | 1424 | LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes), |
ysr@777 | 1425 | xor_shift_res, |
ysr@777 | 1426 | LIR_OprDesc::illegalOpr()); |
ysr@777 | 1427 | } |
ysr@777 | 1428 | |
ysr@777 | 1429 | if (!new_val->is_register()) { |
iveresov@1927 | 1430 | LIR_Opr new_val_reg = new_register(T_OBJECT); |
ysr@777 | 1431 | __ leal(new_val, new_val_reg); |
ysr@777 | 1432 | new_val = new_val_reg; |
ysr@777 | 1433 | } |
ysr@777 | 1434 | assert(new_val->is_register(), "must be a register at this point"); |
ysr@777 | 1435 | |
ysr@777 | 1436 | __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD)); |
ysr@777 | 1437 | |
ysr@777 | 1438 | CodeStub* slow = new G1PostBarrierStub(addr, new_val); |
iveresov@1927 | 1439 | __ branch(lir_cond_notEqual, LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow); |
ysr@777 | 1440 | __ branch_destination(slow->continuation()); |
ysr@777 | 1441 | } |
ysr@777 | 1442 | |
ysr@777 | 1443 | #endif // SERIALGC |
ysr@777 | 1444 | //////////////////////////////////////////////////////////////////////// |
ysr@777 | 1445 | |
duke@435 | 1446 | void LIRGenerator::CardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) { |
duke@435 | 1447 | |
ysr@777 | 1448 | assert(sizeof(*((CardTableModRefBS*)_bs)->byte_map_base) == sizeof(jbyte), "adjust this code"); |
ysr@777 | 1449 | LIR_Const* card_table_base = new LIR_Const(((CardTableModRefBS*)_bs)->byte_map_base); |
duke@435 | 1450 | if (addr->is_address()) { |
duke@435 | 1451 | LIR_Address* address = addr->as_address_ptr(); |
duke@435 | 1452 | LIR_Opr ptr = new_register(T_OBJECT); |
duke@435 | 1453 | if (!address->index()->is_valid() && address->disp() == 0) { |
duke@435 | 1454 | __ move(address->base(), ptr); |
duke@435 | 1455 | } else { |
duke@435 | 1456 | assert(address->disp() != max_jint, "lea doesn't support patched addresses!"); |
duke@435 | 1457 | __ leal(addr, ptr); |
duke@435 | 1458 | } |
duke@435 | 1459 | addr = ptr; |
duke@435 | 1460 | } |
duke@435 | 1461 | assert(addr->is_register(), "must be a register at this point"); |
duke@435 | 1462 | |
bobv@2036 | 1463 | #ifdef ARM |
bobv@2036 | 1464 | // TODO: ARM - move to platform-dependent code |
bobv@2036 | 1465 | LIR_Opr tmp = FrameMap::R14_opr; |
bobv@2036 | 1466 | if (VM_Version::supports_movw()) { |
bobv@2036 | 1467 | __ move((LIR_Opr)card_table_base, tmp); |
bobv@2036 | 1468 | } else { |
bobv@2036 | 1469 | __ move(new LIR_Address(FrameMap::Rthread_opr, in_bytes(JavaThread::card_table_base_offset()), T_ADDRESS), tmp); |
bobv@2036 | 1470 | } |
bobv@2036 | 1471 | |
bobv@2036 | 1472 | CardTableModRefBS* ct = (CardTableModRefBS*)_bs; |
bobv@2036 | 1473 | LIR_Address *card_addr = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTableModRefBS::card_shift, 0, T_BYTE); |
bobv@2036 | 1474 | if(((int)ct->byte_map_base & 0xff) == 0) { |
bobv@2036 | 1475 | __ move(tmp, card_addr); |
bobv@2036 | 1476 | } else { |
bobv@2036 | 1477 | LIR_Opr tmp_zero = new_register(T_INT); |
bobv@2036 | 1478 | __ move(LIR_OprFact::intConst(0), tmp_zero); |
bobv@2036 | 1479 | __ move(tmp_zero, card_addr); |
bobv@2036 | 1480 | } |
bobv@2036 | 1481 | #else // ARM |
duke@435 | 1482 | LIR_Opr tmp = new_pointer_register(); |
duke@435 | 1483 | if (TwoOperandLIRForm) { |
duke@435 | 1484 | __ move(addr, tmp); |
duke@435 | 1485 | __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp); |
duke@435 | 1486 | } else { |
duke@435 | 1487 | __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp); |
duke@435 | 1488 | } |
duke@435 | 1489 | if (can_inline_as_constant(card_table_base)) { |
duke@435 | 1490 | __ move(LIR_OprFact::intConst(0), |
duke@435 | 1491 | new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE)); |
duke@435 | 1492 | } else { |
duke@435 | 1493 | __ move(LIR_OprFact::intConst(0), |
duke@435 | 1494 | new LIR_Address(tmp, load_constant(card_table_base), |
duke@435 | 1495 | T_BYTE)); |
duke@435 | 1496 | } |
bobv@2036 | 1497 | #endif // ARM |
duke@435 | 1498 | } |
duke@435 | 1499 | |
duke@435 | 1500 | |
duke@435 | 1501 | //------------------------field access-------------------------------------- |
duke@435 | 1502 | |
duke@435 | 1503 | // Comment copied form templateTable_i486.cpp |
duke@435 | 1504 | // ---------------------------------------------------------------------------- |
duke@435 | 1505 | // Volatile variables demand their effects be made known to all CPU's in |
duke@435 | 1506 | // order. Store buffers on most chips allow reads & writes to reorder; the |
duke@435 | 1507 | // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of |
duke@435 | 1508 | // memory barrier (i.e., it's not sufficient that the interpreter does not |
duke@435 | 1509 | // reorder volatile references, the hardware also must not reorder them). |
duke@435 | 1510 | // |
duke@435 | 1511 | // According to the new Java Memory Model (JMM): |
duke@435 | 1512 | // (1) All volatiles are serialized wrt to each other. |
duke@435 | 1513 | // ALSO reads & writes act as aquire & release, so: |
duke@435 | 1514 | // (2) A read cannot let unrelated NON-volatile memory refs that happen after |
duke@435 | 1515 | // the read float up to before the read. It's OK for non-volatile memory refs |
duke@435 | 1516 | // that happen before the volatile read to float down below it. |
duke@435 | 1517 | // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs |
duke@435 | 1518 | // that happen BEFORE the write float down to after the write. It's OK for |
duke@435 | 1519 | // non-volatile memory refs that happen after the volatile write to float up |
duke@435 | 1520 | // before it. |
duke@435 | 1521 | // |
duke@435 | 1522 | // We only put in barriers around volatile refs (they are expensive), not |
duke@435 | 1523 | // _between_ memory refs (that would require us to track the flavor of the |
duke@435 | 1524 | // previous memory refs). Requirements (2) and (3) require some barriers |
duke@435 | 1525 | // before volatile stores and after volatile loads. These nearly cover |
duke@435 | 1526 | // requirement (1) but miss the volatile-store-volatile-load case. This final |
duke@435 | 1527 | // case is placed after volatile-stores although it could just as well go |
duke@435 | 1528 | // before volatile-loads. |
duke@435 | 1529 | |
duke@435 | 1530 | |
duke@435 | 1531 | void LIRGenerator::do_StoreField(StoreField* x) { |
duke@435 | 1532 | bool needs_patching = x->needs_patching(); |
duke@435 | 1533 | bool is_volatile = x->field()->is_volatile(); |
duke@435 | 1534 | BasicType field_type = x->field_type(); |
duke@435 | 1535 | bool is_oop = (field_type == T_ARRAY || field_type == T_OBJECT); |
duke@435 | 1536 | |
duke@435 | 1537 | CodeEmitInfo* info = NULL; |
duke@435 | 1538 | if (needs_patching) { |
duke@435 | 1539 | assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); |
duke@435 | 1540 | info = state_for(x, x->state_before()); |
duke@435 | 1541 | } else if (x->needs_null_check()) { |
duke@435 | 1542 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1543 | if (nc == NULL) { |
roland@2174 | 1544 | info = state_for(x); |
duke@435 | 1545 | } else { |
duke@435 | 1546 | info = state_for(nc); |
duke@435 | 1547 | } |
duke@435 | 1548 | } |
duke@435 | 1549 | |
duke@435 | 1550 | |
duke@435 | 1551 | LIRItem object(x->obj(), this); |
duke@435 | 1552 | LIRItem value(x->value(), this); |
duke@435 | 1553 | |
duke@435 | 1554 | object.load_item(); |
duke@435 | 1555 | |
duke@435 | 1556 | if (is_volatile || needs_patching) { |
duke@435 | 1557 | // load item if field is volatile (fewer special cases for volatiles) |
duke@435 | 1558 | // load item if field not initialized |
duke@435 | 1559 | // load item if field not constant |
duke@435 | 1560 | // because of code patching we cannot inline constants |
duke@435 | 1561 | if (field_type == T_BYTE || field_type == T_BOOLEAN) { |
duke@435 | 1562 | value.load_byte_item(); |
duke@435 | 1563 | } else { |
duke@435 | 1564 | value.load_item(); |
duke@435 | 1565 | } |
duke@435 | 1566 | } else { |
duke@435 | 1567 | value.load_for_store(field_type); |
duke@435 | 1568 | } |
duke@435 | 1569 | |
duke@435 | 1570 | set_no_result(x); |
duke@435 | 1571 | |
roland@2174 | 1572 | #ifndef PRODUCT |
duke@435 | 1573 | if (PrintNotLoaded && needs_patching) { |
duke@435 | 1574 | tty->print_cr(" ###class not loaded at store_%s bci %d", |
roland@2174 | 1575 | x->is_static() ? "static" : "field", x->printable_bci()); |
duke@435 | 1576 | } |
roland@2174 | 1577 | #endif |
duke@435 | 1578 | |
duke@435 | 1579 | if (x->needs_null_check() && |
duke@435 | 1580 | (needs_patching || |
duke@435 | 1581 | MacroAssembler::needs_explicit_null_check(x->offset()))) { |
duke@435 | 1582 | // emit an explicit null check because the offset is too large |
duke@435 | 1583 | __ null_check(object.result(), new CodeEmitInfo(info)); |
duke@435 | 1584 | } |
duke@435 | 1585 | |
duke@435 | 1586 | LIR_Address* address; |
duke@435 | 1587 | if (needs_patching) { |
duke@435 | 1588 | // we need to patch the offset in the instruction so don't allow |
duke@435 | 1589 | // generate_address to try to be smart about emitting the -1. |
duke@435 | 1590 | // Otherwise the patching code won't know how to find the |
duke@435 | 1591 | // instruction to patch. |
bobv@2036 | 1592 | address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
duke@435 | 1593 | } else { |
duke@435 | 1594 | address = generate_address(object.result(), x->offset(), field_type); |
duke@435 | 1595 | } |
duke@435 | 1596 | |
duke@435 | 1597 | if (is_volatile && os::is_MP()) { |
duke@435 | 1598 | __ membar_release(); |
duke@435 | 1599 | } |
duke@435 | 1600 | |
ysr@777 | 1601 | if (is_oop) { |
ysr@777 | 1602 | // Do the pre-write barrier, if any. |
ysr@777 | 1603 | pre_barrier(LIR_OprFact::address(address), |
johnc@2781 | 1604 | LIR_OprFact::illegalOpr /* pre_val */, |
johnc@2781 | 1605 | true /* do_load*/, |
ysr@777 | 1606 | needs_patching, |
ysr@777 | 1607 | (info ? new CodeEmitInfo(info) : NULL)); |
ysr@777 | 1608 | } |
ysr@777 | 1609 | |
never@2634 | 1610 | if (is_volatile && !needs_patching) { |
duke@435 | 1611 | volatile_field_store(value.result(), address, info); |
duke@435 | 1612 | } else { |
duke@435 | 1613 | LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; |
duke@435 | 1614 | __ store(value.result(), address, info, patch_code); |
duke@435 | 1615 | } |
duke@435 | 1616 | |
duke@435 | 1617 | if (is_oop) { |
never@1254 | 1618 | // Store to object so mark the card of the header |
duke@435 | 1619 | post_barrier(object.result(), value.result()); |
duke@435 | 1620 | } |
duke@435 | 1621 | |
duke@435 | 1622 | if (is_volatile && os::is_MP()) { |
duke@435 | 1623 | __ membar(); |
duke@435 | 1624 | } |
duke@435 | 1625 | } |
duke@435 | 1626 | |
duke@435 | 1627 | |
duke@435 | 1628 | void LIRGenerator::do_LoadField(LoadField* x) { |
duke@435 | 1629 | bool needs_patching = x->needs_patching(); |
duke@435 | 1630 | bool is_volatile = x->field()->is_volatile(); |
duke@435 | 1631 | BasicType field_type = x->field_type(); |
duke@435 | 1632 | |
duke@435 | 1633 | CodeEmitInfo* info = NULL; |
duke@435 | 1634 | if (needs_patching) { |
duke@435 | 1635 | assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access"); |
duke@435 | 1636 | info = state_for(x, x->state_before()); |
duke@435 | 1637 | } else if (x->needs_null_check()) { |
duke@435 | 1638 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1639 | if (nc == NULL) { |
roland@2174 | 1640 | info = state_for(x); |
duke@435 | 1641 | } else { |
duke@435 | 1642 | info = state_for(nc); |
duke@435 | 1643 | } |
duke@435 | 1644 | } |
duke@435 | 1645 | |
duke@435 | 1646 | LIRItem object(x->obj(), this); |
duke@435 | 1647 | |
duke@435 | 1648 | object.load_item(); |
duke@435 | 1649 | |
roland@2174 | 1650 | #ifndef PRODUCT |
duke@435 | 1651 | if (PrintNotLoaded && needs_patching) { |
duke@435 | 1652 | tty->print_cr(" ###class not loaded at load_%s bci %d", |
roland@2174 | 1653 | x->is_static() ? "static" : "field", x->printable_bci()); |
duke@435 | 1654 | } |
roland@2174 | 1655 | #endif |
duke@435 | 1656 | |
duke@435 | 1657 | if (x->needs_null_check() && |
duke@435 | 1658 | (needs_patching || |
duke@435 | 1659 | MacroAssembler::needs_explicit_null_check(x->offset()))) { |
duke@435 | 1660 | // emit an explicit null check because the offset is too large |
duke@435 | 1661 | __ null_check(object.result(), new CodeEmitInfo(info)); |
duke@435 | 1662 | } |
duke@435 | 1663 | |
duke@435 | 1664 | LIR_Opr reg = rlock_result(x, field_type); |
duke@435 | 1665 | LIR_Address* address; |
duke@435 | 1666 | if (needs_patching) { |
duke@435 | 1667 | // we need to patch the offset in the instruction so don't allow |
duke@435 | 1668 | // generate_address to try to be smart about emitting the -1. |
duke@435 | 1669 | // Otherwise the patching code won't know how to find the |
duke@435 | 1670 | // instruction to patch. |
bobv@2036 | 1671 | address = new LIR_Address(object.result(), PATCHED_ADDR, field_type); |
duke@435 | 1672 | } else { |
duke@435 | 1673 | address = generate_address(object.result(), x->offset(), field_type); |
duke@435 | 1674 | } |
duke@435 | 1675 | |
never@2634 | 1676 | if (is_volatile && !needs_patching) { |
duke@435 | 1677 | volatile_field_load(address, reg, info); |
duke@435 | 1678 | } else { |
duke@435 | 1679 | LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none; |
duke@435 | 1680 | __ load(address, reg, info, patch_code); |
duke@435 | 1681 | } |
duke@435 | 1682 | |
duke@435 | 1683 | if (is_volatile && os::is_MP()) { |
duke@435 | 1684 | __ membar_acquire(); |
duke@435 | 1685 | } |
duke@435 | 1686 | } |
duke@435 | 1687 | |
duke@435 | 1688 | |
duke@435 | 1689 | //------------------------java.nio.Buffer.checkIndex------------------------ |
duke@435 | 1690 | |
duke@435 | 1691 | // int java.nio.Buffer.checkIndex(int) |
duke@435 | 1692 | void LIRGenerator::do_NIOCheckIndex(Intrinsic* x) { |
duke@435 | 1693 | // NOTE: by the time we are in checkIndex() we are guaranteed that |
duke@435 | 1694 | // the buffer is non-null (because checkIndex is package-private and |
duke@435 | 1695 | // only called from within other methods in the buffer). |
duke@435 | 1696 | assert(x->number_of_arguments() == 2, "wrong type"); |
duke@435 | 1697 | LIRItem buf (x->argument_at(0), this); |
duke@435 | 1698 | LIRItem index(x->argument_at(1), this); |
duke@435 | 1699 | buf.load_item(); |
duke@435 | 1700 | index.load_item(); |
duke@435 | 1701 | |
duke@435 | 1702 | LIR_Opr result = rlock_result(x); |
duke@435 | 1703 | if (GenerateRangeChecks) { |
duke@435 | 1704 | CodeEmitInfo* info = state_for(x); |
duke@435 | 1705 | CodeStub* stub = new RangeCheckStub(info, index.result(), true); |
duke@435 | 1706 | if (index.result()->is_constant()) { |
duke@435 | 1707 | cmp_mem_int(lir_cond_belowEqual, buf.result(), java_nio_Buffer::limit_offset(), index.result()->as_jint(), info); |
duke@435 | 1708 | __ branch(lir_cond_belowEqual, T_INT, stub); |
duke@435 | 1709 | } else { |
duke@435 | 1710 | cmp_reg_mem(lir_cond_aboveEqual, index.result(), buf.result(), |
duke@435 | 1711 | java_nio_Buffer::limit_offset(), T_INT, info); |
duke@435 | 1712 | __ branch(lir_cond_aboveEqual, T_INT, stub); |
duke@435 | 1713 | } |
duke@435 | 1714 | __ move(index.result(), result); |
duke@435 | 1715 | } else { |
duke@435 | 1716 | // Just load the index into the result register |
duke@435 | 1717 | __ move(index.result(), result); |
duke@435 | 1718 | } |
duke@435 | 1719 | } |
duke@435 | 1720 | |
duke@435 | 1721 | |
duke@435 | 1722 | //------------------------array access-------------------------------------- |
duke@435 | 1723 | |
duke@435 | 1724 | |
duke@435 | 1725 | void LIRGenerator::do_ArrayLength(ArrayLength* x) { |
duke@435 | 1726 | LIRItem array(x->array(), this); |
duke@435 | 1727 | array.load_item(); |
duke@435 | 1728 | LIR_Opr reg = rlock_result(x); |
duke@435 | 1729 | |
duke@435 | 1730 | CodeEmitInfo* info = NULL; |
duke@435 | 1731 | if (x->needs_null_check()) { |
duke@435 | 1732 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1733 | if (nc == NULL) { |
duke@435 | 1734 | info = state_for(x); |
duke@435 | 1735 | } else { |
duke@435 | 1736 | info = state_for(nc); |
duke@435 | 1737 | } |
duke@435 | 1738 | } |
duke@435 | 1739 | __ load(new LIR_Address(array.result(), arrayOopDesc::length_offset_in_bytes(), T_INT), reg, info, lir_patch_none); |
duke@435 | 1740 | } |
duke@435 | 1741 | |
duke@435 | 1742 | |
duke@435 | 1743 | void LIRGenerator::do_LoadIndexed(LoadIndexed* x) { |
duke@435 | 1744 | bool use_length = x->length() != NULL; |
duke@435 | 1745 | LIRItem array(x->array(), this); |
duke@435 | 1746 | LIRItem index(x->index(), this); |
duke@435 | 1747 | LIRItem length(this); |
duke@435 | 1748 | bool needs_range_check = true; |
duke@435 | 1749 | |
duke@435 | 1750 | if (use_length) { |
duke@435 | 1751 | needs_range_check = x->compute_needs_range_check(); |
duke@435 | 1752 | if (needs_range_check) { |
duke@435 | 1753 | length.set_instruction(x->length()); |
duke@435 | 1754 | length.load_item(); |
duke@435 | 1755 | } |
duke@435 | 1756 | } |
duke@435 | 1757 | |
duke@435 | 1758 | array.load_item(); |
duke@435 | 1759 | if (index.is_constant() && can_inline_as_constant(x->index())) { |
duke@435 | 1760 | // let it be a constant |
duke@435 | 1761 | index.dont_load_item(); |
duke@435 | 1762 | } else { |
duke@435 | 1763 | index.load_item(); |
duke@435 | 1764 | } |
duke@435 | 1765 | |
duke@435 | 1766 | CodeEmitInfo* range_check_info = state_for(x); |
duke@435 | 1767 | CodeEmitInfo* null_check_info = NULL; |
duke@435 | 1768 | if (x->needs_null_check()) { |
duke@435 | 1769 | NullCheck* nc = x->explicit_null_check(); |
duke@435 | 1770 | if (nc != NULL) { |
duke@435 | 1771 | null_check_info = state_for(nc); |
duke@435 | 1772 | } else { |
duke@435 | 1773 | null_check_info = range_check_info; |
duke@435 | 1774 | } |
duke@435 | 1775 | } |
duke@435 | 1776 | |
duke@435 | 1777 | // emit array address setup early so it schedules better |
duke@435 | 1778 | LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), false); |
duke@435 | 1779 | |
duke@435 | 1780 | if (GenerateRangeChecks && needs_range_check) { |
duke@435 | 1781 | if (use_length) { |
duke@435 | 1782 | // TODO: use a (modified) version of array_range_check that does not require a |
duke@435 | 1783 | // constant length to be loaded to a register |
duke@435 | 1784 | __ cmp(lir_cond_belowEqual, length.result(), index.result()); |
duke@435 | 1785 | __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); |
duke@435 | 1786 | } else { |
duke@435 | 1787 | array_range_check(array.result(), index.result(), null_check_info, range_check_info); |
duke@435 | 1788 | // The range check performs the null check, so clear it out for the load |
duke@435 | 1789 | null_check_info = NULL; |
duke@435 | 1790 | } |
duke@435 | 1791 | } |
duke@435 | 1792 | |
duke@435 | 1793 | __ move(array_addr, rlock_result(x, x->elt_type()), null_check_info); |
duke@435 | 1794 | } |
duke@435 | 1795 | |
duke@435 | 1796 | |
duke@435 | 1797 | void LIRGenerator::do_NullCheck(NullCheck* x) { |
duke@435 | 1798 | if (x->can_trap()) { |
duke@435 | 1799 | LIRItem value(x->obj(), this); |
duke@435 | 1800 | value.load_item(); |
duke@435 | 1801 | CodeEmitInfo* info = state_for(x); |
duke@435 | 1802 | __ null_check(value.result(), info); |
duke@435 | 1803 | } |
duke@435 | 1804 | } |
duke@435 | 1805 | |
duke@435 | 1806 | |
duke@435 | 1807 | void LIRGenerator::do_Throw(Throw* x) { |
duke@435 | 1808 | LIRItem exception(x->exception(), this); |
duke@435 | 1809 | exception.load_item(); |
duke@435 | 1810 | set_no_result(x); |
duke@435 | 1811 | LIR_Opr exception_opr = exception.result(); |
duke@435 | 1812 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 1813 | |
duke@435 | 1814 | #ifndef PRODUCT |
duke@435 | 1815 | if (PrintC1Statistics) { |
iveresov@2138 | 1816 | increment_counter(Runtime1::throw_count_address(), T_INT); |
duke@435 | 1817 | } |
duke@435 | 1818 | #endif |
duke@435 | 1819 | |
duke@435 | 1820 | // check if the instruction has an xhandler in any of the nested scopes |
duke@435 | 1821 | bool unwind = false; |
duke@435 | 1822 | if (info->exception_handlers()->length() == 0) { |
duke@435 | 1823 | // this throw is not inside an xhandler |
duke@435 | 1824 | unwind = true; |
duke@435 | 1825 | } else { |
duke@435 | 1826 | // get some idea of the throw type |
duke@435 | 1827 | bool type_is_exact = true; |
duke@435 | 1828 | ciType* throw_type = x->exception()->exact_type(); |
duke@435 | 1829 | if (throw_type == NULL) { |
duke@435 | 1830 | type_is_exact = false; |
duke@435 | 1831 | throw_type = x->exception()->declared_type(); |
duke@435 | 1832 | } |
duke@435 | 1833 | if (throw_type != NULL && throw_type->is_instance_klass()) { |
duke@435 | 1834 | ciInstanceKlass* throw_klass = (ciInstanceKlass*)throw_type; |
duke@435 | 1835 | unwind = !x->exception_handlers()->could_catch(throw_klass, type_is_exact); |
duke@435 | 1836 | } |
duke@435 | 1837 | } |
duke@435 | 1838 | |
duke@435 | 1839 | // do null check before moving exception oop into fixed register |
duke@435 | 1840 | // to avoid a fixed interval with an oop during the null check. |
duke@435 | 1841 | // Use a copy of the CodeEmitInfo because debug information is |
duke@435 | 1842 | // different for null_check and throw. |
duke@435 | 1843 | if (GenerateCompilerNullChecks && |
duke@435 | 1844 | (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) { |
duke@435 | 1845 | // if the exception object wasn't created using new then it might be null. |
roland@2174 | 1846 | __ null_check(exception_opr, new CodeEmitInfo(info, x->state()->copy(ValueStack::ExceptionState, x->state()->bci()))); |
duke@435 | 1847 | } |
duke@435 | 1848 | |
never@1813 | 1849 | if (compilation()->env()->jvmti_can_post_on_exceptions()) { |
duke@435 | 1850 | // we need to go through the exception lookup path to get JVMTI |
duke@435 | 1851 | // notification done |
duke@435 | 1852 | unwind = false; |
duke@435 | 1853 | } |
duke@435 | 1854 | |
duke@435 | 1855 | // move exception oop into fixed register |
duke@435 | 1856 | __ move(exception_opr, exceptionOopOpr()); |
duke@435 | 1857 | |
duke@435 | 1858 | if (unwind) { |
never@1813 | 1859 | __ unwind_exception(exceptionOopOpr()); |
duke@435 | 1860 | } else { |
duke@435 | 1861 | __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info); |
duke@435 | 1862 | } |
duke@435 | 1863 | } |
duke@435 | 1864 | |
duke@435 | 1865 | |
duke@435 | 1866 | void LIRGenerator::do_RoundFP(RoundFP* x) { |
duke@435 | 1867 | LIRItem input(x->input(), this); |
duke@435 | 1868 | input.load_item(); |
duke@435 | 1869 | LIR_Opr input_opr = input.result(); |
duke@435 | 1870 | assert(input_opr->is_register(), "why round if value is not in a register?"); |
duke@435 | 1871 | assert(input_opr->is_single_fpu() || input_opr->is_double_fpu(), "input should be floating-point value"); |
duke@435 | 1872 | if (input_opr->is_single_fpu()) { |
duke@435 | 1873 | set_result(x, round_item(input_opr)); // This code path not currently taken |
duke@435 | 1874 | } else { |
duke@435 | 1875 | LIR_Opr result = new_register(T_DOUBLE); |
duke@435 | 1876 | set_vreg_flag(result, must_start_in_memory); |
duke@435 | 1877 | __ roundfp(input_opr, LIR_OprFact::illegalOpr, result); |
duke@435 | 1878 | set_result(x, result); |
duke@435 | 1879 | } |
duke@435 | 1880 | } |
duke@435 | 1881 | |
duke@435 | 1882 | void LIRGenerator::do_UnsafeGetRaw(UnsafeGetRaw* x) { |
duke@435 | 1883 | LIRItem base(x->base(), this); |
duke@435 | 1884 | LIRItem idx(this); |
duke@435 | 1885 | |
duke@435 | 1886 | base.load_item(); |
duke@435 | 1887 | if (x->has_index()) { |
duke@435 | 1888 | idx.set_instruction(x->index()); |
duke@435 | 1889 | idx.load_nonconstant(); |
duke@435 | 1890 | } |
duke@435 | 1891 | |
duke@435 | 1892 | LIR_Opr reg = rlock_result(x, x->basic_type()); |
duke@435 | 1893 | |
duke@435 | 1894 | int log2_scale = 0; |
duke@435 | 1895 | if (x->has_index()) { |
duke@435 | 1896 | assert(x->index()->type()->tag() == intTag, "should not find non-int index"); |
duke@435 | 1897 | log2_scale = x->log2_scale(); |
duke@435 | 1898 | } |
duke@435 | 1899 | |
duke@435 | 1900 | assert(!x->has_index() || idx.value() == x->index(), "should match"); |
duke@435 | 1901 | |
duke@435 | 1902 | LIR_Opr base_op = base.result(); |
duke@435 | 1903 | #ifndef _LP64 |
duke@435 | 1904 | if (x->base()->type()->tag() == longTag) { |
duke@435 | 1905 | base_op = new_register(T_INT); |
duke@435 | 1906 | __ convert(Bytecodes::_l2i, base.result(), base_op); |
duke@435 | 1907 | } else { |
duke@435 | 1908 | assert(x->base()->type()->tag() == intTag, "must be"); |
duke@435 | 1909 | } |
duke@435 | 1910 | #endif |
duke@435 | 1911 | |
duke@435 | 1912 | BasicType dst_type = x->basic_type(); |
duke@435 | 1913 | LIR_Opr index_op = idx.result(); |
duke@435 | 1914 | |
duke@435 | 1915 | LIR_Address* addr; |
duke@435 | 1916 | if (index_op->is_constant()) { |
duke@435 | 1917 | assert(log2_scale == 0, "must not have a scale"); |
duke@435 | 1918 | addr = new LIR_Address(base_op, index_op->as_jint(), dst_type); |
duke@435 | 1919 | } else { |
never@739 | 1920 | #ifdef X86 |
roland@1495 | 1921 | #ifdef _LP64 |
roland@1495 | 1922 | if (!index_op->is_illegal() && index_op->type() == T_INT) { |
roland@1495 | 1923 | LIR_Opr tmp = new_pointer_register(); |
roland@1495 | 1924 | __ convert(Bytecodes::_i2l, index_op, tmp); |
roland@1495 | 1925 | index_op = tmp; |
roland@1495 | 1926 | } |
roland@1495 | 1927 | #endif |
duke@435 | 1928 | addr = new LIR_Address(base_op, index_op, LIR_Address::Scale(log2_scale), 0, dst_type); |
bobv@2036 | 1929 | #elif defined(ARM) |
bobv@2036 | 1930 | addr = generate_address(base_op, index_op, log2_scale, 0, dst_type); |
duke@435 | 1931 | #else |
duke@435 | 1932 | if (index_op->is_illegal() || log2_scale == 0) { |
roland@1495 | 1933 | #ifdef _LP64 |
roland@1495 | 1934 | if (!index_op->is_illegal() && index_op->type() == T_INT) { |
roland@1495 | 1935 | LIR_Opr tmp = new_pointer_register(); |
roland@1495 | 1936 | __ convert(Bytecodes::_i2l, index_op, tmp); |
roland@1495 | 1937 | index_op = tmp; |
roland@1495 | 1938 | } |
roland@1495 | 1939 | #endif |
duke@435 | 1940 | addr = new LIR_Address(base_op, index_op, dst_type); |
duke@435 | 1941 | } else { |
roland@1495 | 1942 | LIR_Opr tmp = new_pointer_register(); |
duke@435 | 1943 | __ shift_left(index_op, log2_scale, tmp); |
duke@435 | 1944 | addr = new LIR_Address(base_op, tmp, dst_type); |
duke@435 | 1945 | } |
duke@435 | 1946 | #endif |
duke@435 | 1947 | } |
duke@435 | 1948 | |
duke@435 | 1949 | if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) { |
duke@435 | 1950 | __ unaligned_move(addr, reg); |
duke@435 | 1951 | } else { |
iveresov@2344 | 1952 | if (dst_type == T_OBJECT && x->is_wide()) { |
iveresov@2344 | 1953 | __ move_wide(addr, reg); |
iveresov@2344 | 1954 | } else { |
iveresov@2344 | 1955 | __ move(addr, reg); |
iveresov@2344 | 1956 | } |
duke@435 | 1957 | } |
duke@435 | 1958 | } |
duke@435 | 1959 | |
duke@435 | 1960 | |
duke@435 | 1961 | void LIRGenerator::do_UnsafePutRaw(UnsafePutRaw* x) { |
duke@435 | 1962 | int log2_scale = 0; |
duke@435 | 1963 | BasicType type = x->basic_type(); |
duke@435 | 1964 | |
duke@435 | 1965 | if (x->has_index()) { |
duke@435 | 1966 | assert(x->index()->type()->tag() == intTag, "should not find non-int index"); |
duke@435 | 1967 | log2_scale = x->log2_scale(); |
duke@435 | 1968 | } |
duke@435 | 1969 | |
duke@435 | 1970 | LIRItem base(x->base(), this); |
duke@435 | 1971 | LIRItem value(x->value(), this); |
duke@435 | 1972 | LIRItem idx(this); |
duke@435 | 1973 | |
duke@435 | 1974 | base.load_item(); |
duke@435 | 1975 | if (x->has_index()) { |
duke@435 | 1976 | idx.set_instruction(x->index()); |
duke@435 | 1977 | idx.load_item(); |
duke@435 | 1978 | } |
duke@435 | 1979 | |
duke@435 | 1980 | if (type == T_BYTE || type == T_BOOLEAN) { |
duke@435 | 1981 | value.load_byte_item(); |
duke@435 | 1982 | } else { |
duke@435 | 1983 | value.load_item(); |
duke@435 | 1984 | } |
duke@435 | 1985 | |
duke@435 | 1986 | set_no_result(x); |
duke@435 | 1987 | |
duke@435 | 1988 | LIR_Opr base_op = base.result(); |
duke@435 | 1989 | #ifndef _LP64 |
duke@435 | 1990 | if (x->base()->type()->tag() == longTag) { |
duke@435 | 1991 | base_op = new_register(T_INT); |
duke@435 | 1992 | __ convert(Bytecodes::_l2i, base.result(), base_op); |
duke@435 | 1993 | } else { |
duke@435 | 1994 | assert(x->base()->type()->tag() == intTag, "must be"); |
duke@435 | 1995 | } |
duke@435 | 1996 | #endif |
duke@435 | 1997 | |
duke@435 | 1998 | LIR_Opr index_op = idx.result(); |
duke@435 | 1999 | if (log2_scale != 0) { |
duke@435 | 2000 | // temporary fix (platform dependent code without shift on Intel would be better) |
roland@1495 | 2001 | index_op = new_pointer_register(); |
roland@1495 | 2002 | #ifdef _LP64 |
roland@1495 | 2003 | if(idx.result()->type() == T_INT) { |
roland@1495 | 2004 | __ convert(Bytecodes::_i2l, idx.result(), index_op); |
roland@1495 | 2005 | } else { |
roland@1495 | 2006 | #endif |
bobv@2036 | 2007 | // TODO: ARM also allows embedded shift in the address |
roland@1495 | 2008 | __ move(idx.result(), index_op); |
roland@1495 | 2009 | #ifdef _LP64 |
roland@1495 | 2010 | } |
roland@1495 | 2011 | #endif |
duke@435 | 2012 | __ shift_left(index_op, log2_scale, index_op); |
duke@435 | 2013 | } |
roland@1495 | 2014 | #ifdef _LP64 |
roland@1495 | 2015 | else if(!index_op->is_illegal() && index_op->type() == T_INT) { |
roland@1495 | 2016 | LIR_Opr tmp = new_pointer_register(); |
roland@1495 | 2017 | __ convert(Bytecodes::_i2l, index_op, tmp); |
roland@1495 | 2018 | index_op = tmp; |
roland@1495 | 2019 | } |
roland@1495 | 2020 | #endif |
duke@435 | 2021 | |
duke@435 | 2022 | LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type()); |
duke@435 | 2023 | __ move(value.result(), addr); |
duke@435 | 2024 | } |
duke@435 | 2025 | |
duke@435 | 2026 | |
duke@435 | 2027 | void LIRGenerator::do_UnsafeGetObject(UnsafeGetObject* x) { |
duke@435 | 2028 | BasicType type = x->basic_type(); |
duke@435 | 2029 | LIRItem src(x->object(), this); |
duke@435 | 2030 | LIRItem off(x->offset(), this); |
duke@435 | 2031 | |
duke@435 | 2032 | off.load_item(); |
duke@435 | 2033 | src.load_item(); |
duke@435 | 2034 | |
johnc@2781 | 2035 | LIR_Opr reg = rlock_result(x, x->basic_type()); |
duke@435 | 2036 | |
dholmes@2443 | 2037 | get_Object_unsafe(reg, src.result(), off.result(), type, x->is_volatile()); |
johnc@2781 | 2038 | |
johnc@2781 | 2039 | #ifndef SERIALGC |
johnc@2781 | 2040 | // We might be reading the value of the referent field of a |
johnc@2781 | 2041 | // Reference object in order to attach it back to the live |
johnc@2781 | 2042 | // object graph. If G1 is enabled then we need to record |
johnc@2781 | 2043 | // the value that is being returned in an SATB log buffer. |
johnc@2781 | 2044 | // |
johnc@2781 | 2045 | // We need to generate code similar to the following... |
johnc@2781 | 2046 | // |
johnc@2781 | 2047 | // if (offset == java_lang_ref_Reference::referent_offset) { |
johnc@2781 | 2048 | // if (src != NULL) { |
johnc@2781 | 2049 | // if (klass(src)->reference_type() != REF_NONE) { |
johnc@2781 | 2050 | // pre_barrier(..., reg, ...); |
johnc@2781 | 2051 | // } |
johnc@2781 | 2052 | // } |
johnc@2781 | 2053 | // } |
johnc@2781 | 2054 | // |
johnc@2781 | 2055 | // The first non-constant check of either the offset or |
johnc@2781 | 2056 | // the src operand will be done here; the remainder |
johnc@2781 | 2057 | // will take place in the generated code stub. |
johnc@2781 | 2058 | |
johnc@2781 | 2059 | if (UseG1GC && type == T_OBJECT) { |
johnc@2781 | 2060 | bool gen_code_stub = true; // Assume we need to generate the slow code stub. |
johnc@2781 | 2061 | bool gen_offset_check = true; // Assume the code stub has to generate the offset guard. |
johnc@2781 | 2062 | bool gen_source_check = true; // Assume the code stub has to check the src object for null. |
johnc@2781 | 2063 | |
johnc@2781 | 2064 | if (off.is_constant()) { |
johnc@2786 | 2065 | jlong off_con = (off.type()->is_int() ? |
johnc@2786 | 2066 | (jlong) off.get_jint_constant() : |
johnc@2786 | 2067 | off.get_jlong_constant()); |
johnc@2786 | 2068 | |
johnc@2786 | 2069 | |
johnc@2786 | 2070 | if (off_con != (jlong) java_lang_ref_Reference::referent_offset) { |
johnc@2781 | 2071 | // The constant offset is something other than referent_offset. |
johnc@2781 | 2072 | // We can skip generating/checking the remaining guards and |
johnc@2781 | 2073 | // skip generation of the code stub. |
johnc@2781 | 2074 | gen_code_stub = false; |
johnc@2781 | 2075 | } else { |
johnc@2781 | 2076 | // The constant offset is the same as referent_offset - |
johnc@2781 | 2077 | // we do not need to generate a runtime offset check. |
johnc@2781 | 2078 | gen_offset_check = false; |
johnc@2781 | 2079 | } |
johnc@2781 | 2080 | } |
johnc@2781 | 2081 | |
johnc@2781 | 2082 | // We don't need to generate stub if the source object is an array |
johnc@2781 | 2083 | if (gen_code_stub && src.type()->is_array()) { |
johnc@2781 | 2084 | gen_code_stub = false; |
johnc@2781 | 2085 | } |
johnc@2781 | 2086 | |
johnc@2781 | 2087 | if (gen_code_stub) { |
johnc@2781 | 2088 | // We still need to continue with the checks. |
johnc@2781 | 2089 | if (src.is_constant()) { |
johnc@2781 | 2090 | ciObject* src_con = src.get_jobject_constant(); |
johnc@2781 | 2091 | |
johnc@2781 | 2092 | if (src_con->is_null_object()) { |
johnc@2781 | 2093 | // The constant src object is null - We can skip |
johnc@2781 | 2094 | // generating the code stub. |
johnc@2781 | 2095 | gen_code_stub = false; |
johnc@2781 | 2096 | } else { |
johnc@2781 | 2097 | // Non-null constant source object. We still have to generate |
johnc@2781 | 2098 | // the slow stub - but we don't need to generate the runtime |
johnc@2781 | 2099 | // null object check. |
johnc@2781 | 2100 | gen_source_check = false; |
johnc@2781 | 2101 | } |
johnc@2781 | 2102 | } |
johnc@2781 | 2103 | } |
johnc@2781 | 2104 | |
johnc@2781 | 2105 | if (gen_code_stub) { |
johnc@2781 | 2106 | // Temoraries. |
johnc@2781 | 2107 | LIR_Opr src_klass = new_register(T_OBJECT); |
johnc@2781 | 2108 | |
johnc@2781 | 2109 | // Get the thread pointer for the pre-barrier |
johnc@2781 | 2110 | LIR_Opr thread = getThreadPointer(); |
johnc@2781 | 2111 | |
johnc@2781 | 2112 | CodeStub* stub; |
johnc@2781 | 2113 | |
johnc@2781 | 2114 | // We can have generate one runtime check here. Let's start with |
johnc@2781 | 2115 | // the offset check. |
johnc@2781 | 2116 | if (gen_offset_check) { |
johnc@2781 | 2117 | // if (offset == referent_offset) -> slow code stub |
johnc@2786 | 2118 | // If offset is an int then we can do the comparison with the |
johnc@2786 | 2119 | // referent_offset constant; otherwise we need to move |
johnc@2786 | 2120 | // referent_offset into a temporary register and generate |
johnc@2786 | 2121 | // a reg-reg compare. |
johnc@2786 | 2122 | |
johnc@2786 | 2123 | LIR_Opr referent_off; |
johnc@2786 | 2124 | |
johnc@2786 | 2125 | if (off.type()->is_int()) { |
johnc@2786 | 2126 | referent_off = LIR_OprFact::intConst(java_lang_ref_Reference::referent_offset); |
johnc@2786 | 2127 | } else { |
johnc@2786 | 2128 | assert(off.type()->is_long(), "what else?"); |
johnc@2786 | 2129 | referent_off = new_register(T_LONG); |
johnc@2786 | 2130 | __ move(LIR_OprFact::longConst(java_lang_ref_Reference::referent_offset), referent_off); |
johnc@2786 | 2131 | } |
johnc@2786 | 2132 | |
johnc@2786 | 2133 | __ cmp(lir_cond_equal, off.result(), referent_off); |
johnc@2781 | 2134 | |
johnc@2781 | 2135 | // Optionally generate "src == null" check. |
johnc@2781 | 2136 | stub = new G1UnsafeGetObjSATBBarrierStub(reg, src.result(), |
johnc@2781 | 2137 | src_klass, thread, |
johnc@2781 | 2138 | gen_source_check); |
johnc@2781 | 2139 | |
johnc@2786 | 2140 | __ branch(lir_cond_equal, as_BasicType(off.type()), stub); |
johnc@2781 | 2141 | } else { |
johnc@2781 | 2142 | if (gen_source_check) { |
johnc@2781 | 2143 | // offset is a const and equals referent offset |
johnc@2781 | 2144 | // if (source != null) -> slow code stub |
johnc@2781 | 2145 | __ cmp(lir_cond_notEqual, src.result(), LIR_OprFact::oopConst(NULL)); |
johnc@2781 | 2146 | |
johnc@2781 | 2147 | // Since we are generating the "if src == null" guard here, |
johnc@2781 | 2148 | // there is no need to generate the "src == null" check again. |
johnc@2781 | 2149 | stub = new G1UnsafeGetObjSATBBarrierStub(reg, src.result(), |
johnc@2781 | 2150 | src_klass, thread, |
johnc@2781 | 2151 | false); |
johnc@2781 | 2152 | |
johnc@2781 | 2153 | __ branch(lir_cond_notEqual, T_OBJECT, stub); |
johnc@2781 | 2154 | } else { |
johnc@2781 | 2155 | // We have statically determined that offset == referent_offset |
johnc@2781 | 2156 | // && src != null so we unconditionally branch to code stub |
johnc@2781 | 2157 | // to perform the guards and record reg in the SATB log buffer. |
johnc@2781 | 2158 | |
johnc@2781 | 2159 | stub = new G1UnsafeGetObjSATBBarrierStub(reg, src.result(), |
johnc@2781 | 2160 | src_klass, thread, |
johnc@2781 | 2161 | false); |
johnc@2781 | 2162 | |
johnc@2781 | 2163 | __ branch(lir_cond_always, T_ILLEGAL, stub); |
johnc@2781 | 2164 | } |
johnc@2781 | 2165 | } |
johnc@2781 | 2166 | |
johnc@2781 | 2167 | // Continuation point |
johnc@2781 | 2168 | __ branch_destination(stub->continuation()); |
johnc@2781 | 2169 | } |
johnc@2781 | 2170 | } |
johnc@2781 | 2171 | #endif // SERIALGC |
johnc@2781 | 2172 | |
duke@435 | 2173 | if (x->is_volatile() && os::is_MP()) __ membar_acquire(); |
duke@435 | 2174 | } |
duke@435 | 2175 | |
duke@435 | 2176 | |
duke@435 | 2177 | void LIRGenerator::do_UnsafePutObject(UnsafePutObject* x) { |
duke@435 | 2178 | BasicType type = x->basic_type(); |
duke@435 | 2179 | LIRItem src(x->object(), this); |
duke@435 | 2180 | LIRItem off(x->offset(), this); |
duke@435 | 2181 | LIRItem data(x->value(), this); |
duke@435 | 2182 | |
duke@435 | 2183 | src.load_item(); |
duke@435 | 2184 | if (type == T_BOOLEAN || type == T_BYTE) { |
duke@435 | 2185 | data.load_byte_item(); |
duke@435 | 2186 | } else { |
duke@435 | 2187 | data.load_item(); |
duke@435 | 2188 | } |
duke@435 | 2189 | off.load_item(); |
duke@435 | 2190 | |
duke@435 | 2191 | set_no_result(x); |
duke@435 | 2192 | |
duke@435 | 2193 | if (x->is_volatile() && os::is_MP()) __ membar_release(); |
duke@435 | 2194 | put_Object_unsafe(src.result(), off.result(), data.result(), type, x->is_volatile()); |
dholmes@2443 | 2195 | if (x->is_volatile() && os::is_MP()) __ membar(); |
duke@435 | 2196 | } |
duke@435 | 2197 | |
duke@435 | 2198 | |
duke@435 | 2199 | void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) { |
duke@435 | 2200 | LIRItem src(x->object(), this); |
duke@435 | 2201 | LIRItem off(x->offset(), this); |
duke@435 | 2202 | |
duke@435 | 2203 | src.load_item(); |
duke@435 | 2204 | if (off.is_constant() && can_inline_as_constant(x->offset())) { |
duke@435 | 2205 | // let it be a constant |
duke@435 | 2206 | off.dont_load_item(); |
duke@435 | 2207 | } else { |
duke@435 | 2208 | off.load_item(); |
duke@435 | 2209 | } |
duke@435 | 2210 | |
duke@435 | 2211 | set_no_result(x); |
duke@435 | 2212 | |
duke@435 | 2213 | LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE); |
duke@435 | 2214 | __ prefetch(addr, is_store); |
duke@435 | 2215 | } |
duke@435 | 2216 | |
duke@435 | 2217 | |
duke@435 | 2218 | void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) { |
duke@435 | 2219 | do_UnsafePrefetch(x, false); |
duke@435 | 2220 | } |
duke@435 | 2221 | |
duke@435 | 2222 | |
duke@435 | 2223 | void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { |
duke@435 | 2224 | do_UnsafePrefetch(x, true); |
duke@435 | 2225 | } |
duke@435 | 2226 | |
duke@435 | 2227 | |
duke@435 | 2228 | void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) { |
duke@435 | 2229 | int lng = x->length(); |
duke@435 | 2230 | |
duke@435 | 2231 | for (int i = 0; i < lng; i++) { |
duke@435 | 2232 | SwitchRange* one_range = x->at(i); |
duke@435 | 2233 | int low_key = one_range->low_key(); |
duke@435 | 2234 | int high_key = one_range->high_key(); |
duke@435 | 2235 | BlockBegin* dest = one_range->sux(); |
duke@435 | 2236 | if (low_key == high_key) { |
duke@435 | 2237 | __ cmp(lir_cond_equal, value, low_key); |
duke@435 | 2238 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2239 | } else if (high_key - low_key == 1) { |
duke@435 | 2240 | __ cmp(lir_cond_equal, value, low_key); |
duke@435 | 2241 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2242 | __ cmp(lir_cond_equal, value, high_key); |
duke@435 | 2243 | __ branch(lir_cond_equal, T_INT, dest); |
duke@435 | 2244 | } else { |
duke@435 | 2245 | LabelObj* L = new LabelObj(); |
duke@435 | 2246 | __ cmp(lir_cond_less, value, low_key); |
duke@435 | 2247 | __ branch(lir_cond_less, L->label()); |
duke@435 | 2248 | __ cmp(lir_cond_lessEqual, value, high_key); |
duke@435 | 2249 | __ branch(lir_cond_lessEqual, T_INT, dest); |
duke@435 | 2250 | __ branch_destination(L->label()); |
duke@435 | 2251 | } |
duke@435 | 2252 | } |
duke@435 | 2253 | __ jump(default_sux); |
duke@435 | 2254 | } |
duke@435 | 2255 | |
duke@435 | 2256 | |
duke@435 | 2257 | SwitchRangeArray* LIRGenerator::create_lookup_ranges(TableSwitch* x) { |
duke@435 | 2258 | SwitchRangeList* res = new SwitchRangeList(); |
duke@435 | 2259 | int len = x->length(); |
duke@435 | 2260 | if (len > 0) { |
duke@435 | 2261 | BlockBegin* sux = x->sux_at(0); |
duke@435 | 2262 | int key = x->lo_key(); |
duke@435 | 2263 | BlockBegin* default_sux = x->default_sux(); |
duke@435 | 2264 | SwitchRange* range = new SwitchRange(key, sux); |
duke@435 | 2265 | for (int i = 0; i < len; i++, key++) { |
duke@435 | 2266 | BlockBegin* new_sux = x->sux_at(i); |
duke@435 | 2267 | if (sux == new_sux) { |
duke@435 | 2268 | // still in same range |
duke@435 | 2269 | range->set_high_key(key); |
duke@435 | 2270 | } else { |
duke@435 | 2271 | // skip tests which explicitly dispatch to the default |
duke@435 | 2272 | if (sux != default_sux) { |
duke@435 | 2273 | res->append(range); |
duke@435 | 2274 | } |
duke@435 | 2275 | range = new SwitchRange(key, new_sux); |
duke@435 | 2276 | } |
duke@435 | 2277 | sux = new_sux; |
duke@435 | 2278 | } |
duke@435 | 2279 | if (res->length() == 0 || res->last() != range) res->append(range); |
duke@435 | 2280 | } |
duke@435 | 2281 | return res; |
duke@435 | 2282 | } |
duke@435 | 2283 | |
duke@435 | 2284 | |
duke@435 | 2285 | // we expect the keys to be sorted by increasing value |
duke@435 | 2286 | SwitchRangeArray* LIRGenerator::create_lookup_ranges(LookupSwitch* x) { |
duke@435 | 2287 | SwitchRangeList* res = new SwitchRangeList(); |
duke@435 | 2288 | int len = x->length(); |
duke@435 | 2289 | if (len > 0) { |
duke@435 | 2290 | BlockBegin* default_sux = x->default_sux(); |
duke@435 | 2291 | int key = x->key_at(0); |
duke@435 | 2292 | BlockBegin* sux = x->sux_at(0); |
duke@435 | 2293 | SwitchRange* range = new SwitchRange(key, sux); |
duke@435 | 2294 | for (int i = 1; i < len; i++) { |
duke@435 | 2295 | int new_key = x->key_at(i); |
duke@435 | 2296 | BlockBegin* new_sux = x->sux_at(i); |
duke@435 | 2297 | if (key+1 == new_key && sux == new_sux) { |
duke@435 | 2298 | // still in same range |
duke@435 | 2299 | range->set_high_key(new_key); |
duke@435 | 2300 | } else { |
duke@435 | 2301 | // skip tests which explicitly dispatch to the default |
duke@435 | 2302 | if (range->sux() != default_sux) { |
duke@435 | 2303 | res->append(range); |
duke@435 | 2304 | } |
duke@435 | 2305 | range = new SwitchRange(new_key, new_sux); |
duke@435 | 2306 | } |
duke@435 | 2307 | key = new_key; |
duke@435 | 2308 | sux = new_sux; |
duke@435 | 2309 | } |
duke@435 | 2310 | if (res->length() == 0 || res->last() != range) res->append(range); |
duke@435 | 2311 | } |
duke@435 | 2312 | return res; |
duke@435 | 2313 | } |
duke@435 | 2314 | |
duke@435 | 2315 | |
duke@435 | 2316 | void LIRGenerator::do_TableSwitch(TableSwitch* x) { |
duke@435 | 2317 | LIRItem tag(x->tag(), this); |
duke@435 | 2318 | tag.load_item(); |
duke@435 | 2319 | set_no_result(x); |
duke@435 | 2320 | |
duke@435 | 2321 | if (x->is_safepoint()) { |
duke@435 | 2322 | __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); |
duke@435 | 2323 | } |
duke@435 | 2324 | |
duke@435 | 2325 | // move values into phi locations |
duke@435 | 2326 | move_to_phi(x->state()); |
duke@435 | 2327 | |
duke@435 | 2328 | int lo_key = x->lo_key(); |
duke@435 | 2329 | int hi_key = x->hi_key(); |
duke@435 | 2330 | int len = x->length(); |
duke@435 | 2331 | LIR_Opr value = tag.result(); |
duke@435 | 2332 | if (UseTableRanges) { |
duke@435 | 2333 | do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); |
duke@435 | 2334 | } else { |
duke@435 | 2335 | for (int i = 0; i < len; i++) { |
duke@435 | 2336 | __ cmp(lir_cond_equal, value, i + lo_key); |
duke@435 | 2337 | __ branch(lir_cond_equal, T_INT, x->sux_at(i)); |
duke@435 | 2338 | } |
duke@435 | 2339 | __ jump(x->default_sux()); |
duke@435 | 2340 | } |
duke@435 | 2341 | } |
duke@435 | 2342 | |
duke@435 | 2343 | |
duke@435 | 2344 | void LIRGenerator::do_LookupSwitch(LookupSwitch* x) { |
duke@435 | 2345 | LIRItem tag(x->tag(), this); |
duke@435 | 2346 | tag.load_item(); |
duke@435 | 2347 | set_no_result(x); |
duke@435 | 2348 | |
duke@435 | 2349 | if (x->is_safepoint()) { |
duke@435 | 2350 | __ safepoint(safepoint_poll_register(), state_for(x, x->state_before())); |
duke@435 | 2351 | } |
duke@435 | 2352 | |
duke@435 | 2353 | // move values into phi locations |
duke@435 | 2354 | move_to_phi(x->state()); |
duke@435 | 2355 | |
duke@435 | 2356 | LIR_Opr value = tag.result(); |
duke@435 | 2357 | if (UseTableRanges) { |
duke@435 | 2358 | do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux()); |
duke@435 | 2359 | } else { |
duke@435 | 2360 | int len = x->length(); |
duke@435 | 2361 | for (int i = 0; i < len; i++) { |
duke@435 | 2362 | __ cmp(lir_cond_equal, value, x->key_at(i)); |
duke@435 | 2363 | __ branch(lir_cond_equal, T_INT, x->sux_at(i)); |
duke@435 | 2364 | } |
duke@435 | 2365 | __ jump(x->default_sux()); |
duke@435 | 2366 | } |
duke@435 | 2367 | } |
duke@435 | 2368 | |
duke@435 | 2369 | |
duke@435 | 2370 | void LIRGenerator::do_Goto(Goto* x) { |
duke@435 | 2371 | set_no_result(x); |
duke@435 | 2372 | |
duke@435 | 2373 | if (block()->next()->as_OsrEntry()) { |
duke@435 | 2374 | // need to free up storage used for OSR entry point |
duke@435 | 2375 | LIR_Opr osrBuffer = block()->next()->operand(); |
duke@435 | 2376 | BasicTypeList signature; |
duke@435 | 2377 | signature.append(T_INT); |
duke@435 | 2378 | CallingConvention* cc = frame_map()->c_calling_convention(&signature); |
duke@435 | 2379 | __ move(osrBuffer, cc->args()->at(0)); |
duke@435 | 2380 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_end), |
duke@435 | 2381 | getThreadTemp(), LIR_OprFact::illegalOpr, cc->args()); |
duke@435 | 2382 | } |
duke@435 | 2383 | |
duke@435 | 2384 | if (x->is_safepoint()) { |
duke@435 | 2385 | ValueStack* state = x->state_before() ? x->state_before() : x->state(); |
duke@435 | 2386 | |
duke@435 | 2387 | // increment backedge counter if needed |
iveresov@2138 | 2388 | CodeEmitInfo* info = state_for(x, state); |
roland@2174 | 2389 | increment_backedge_counter(info, info->stack()->bci()); |
duke@435 | 2390 | CodeEmitInfo* safepoint_info = state_for(x, state); |
duke@435 | 2391 | __ safepoint(safepoint_poll_register(), safepoint_info); |
duke@435 | 2392 | } |
duke@435 | 2393 | |
iveresov@2138 | 2394 | // Gotos can be folded Ifs, handle this case. |
iveresov@2138 | 2395 | if (x->should_profile()) { |
iveresov@2138 | 2396 | ciMethod* method = x->profiled_method(); |
iveresov@2138 | 2397 | assert(method != NULL, "method should be set if branch is profiled"); |
iveresov@2349 | 2398 | ciMethodData* md = method->method_data_or_null(); |
iveresov@2349 | 2399 | assert(md != NULL, "Sanity"); |
iveresov@2138 | 2400 | ciProfileData* data = md->bci_to_data(x->profiled_bci()); |
iveresov@2138 | 2401 | assert(data != NULL, "must have profiling data"); |
iveresov@2138 | 2402 | int offset; |
iveresov@2138 | 2403 | if (x->direction() == Goto::taken) { |
iveresov@2138 | 2404 | assert(data->is_BranchData(), "need BranchData for two-way branches"); |
iveresov@2138 | 2405 | offset = md->byte_offset_of_slot(data, BranchData::taken_offset()); |
iveresov@2138 | 2406 | } else if (x->direction() == Goto::not_taken) { |
iveresov@2138 | 2407 | assert(data->is_BranchData(), "need BranchData for two-way branches"); |
iveresov@2138 | 2408 | offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset()); |
iveresov@2138 | 2409 | } else { |
iveresov@2138 | 2410 | assert(data->is_JumpData(), "need JumpData for branches"); |
iveresov@2138 | 2411 | offset = md->byte_offset_of_slot(data, JumpData::taken_offset()); |
iveresov@2138 | 2412 | } |
iveresov@2138 | 2413 | LIR_Opr md_reg = new_register(T_OBJECT); |
iveresov@2138 | 2414 | __ oop2reg(md->constant_encoding(), md_reg); |
iveresov@2138 | 2415 | |
iveresov@2138 | 2416 | increment_counter(new LIR_Address(md_reg, offset, |
iveresov@2138 | 2417 | NOT_LP64(T_INT) LP64_ONLY(T_LONG)), DataLayout::counter_increment); |
iveresov@2138 | 2418 | } |
iveresov@2138 | 2419 | |
duke@435 | 2420 | // emit phi-instruction move after safepoint since this simplifies |
duke@435 | 2421 | // describing the state as the safepoint. |
duke@435 | 2422 | move_to_phi(x->state()); |
duke@435 | 2423 | |
duke@435 | 2424 | __ jump(x->default_sux()); |
duke@435 | 2425 | } |
duke@435 | 2426 | |
duke@435 | 2427 | |
duke@435 | 2428 | void LIRGenerator::do_Base(Base* x) { |
duke@435 | 2429 | __ std_entry(LIR_OprFact::illegalOpr); |
duke@435 | 2430 | // Emit moves from physical registers / stack slots to virtual registers |
duke@435 | 2431 | CallingConvention* args = compilation()->frame_map()->incoming_arguments(); |
duke@435 | 2432 | IRScope* irScope = compilation()->hir()->top_scope(); |
duke@435 | 2433 | int java_index = 0; |
duke@435 | 2434 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 2435 | LIR_Opr src = args->at(i); |
duke@435 | 2436 | assert(!src->is_illegal(), "check"); |
duke@435 | 2437 | BasicType t = src->type(); |
duke@435 | 2438 | |
duke@435 | 2439 | // Types which are smaller than int are passed as int, so |
duke@435 | 2440 | // correct the type which passed. |
duke@435 | 2441 | switch (t) { |
duke@435 | 2442 | case T_BYTE: |
duke@435 | 2443 | case T_BOOLEAN: |
duke@435 | 2444 | case T_SHORT: |
duke@435 | 2445 | case T_CHAR: |
duke@435 | 2446 | t = T_INT; |
duke@435 | 2447 | break; |
duke@435 | 2448 | } |
duke@435 | 2449 | |
duke@435 | 2450 | LIR_Opr dest = new_register(t); |
duke@435 | 2451 | __ move(src, dest); |
duke@435 | 2452 | |
duke@435 | 2453 | // Assign new location to Local instruction for this local |
duke@435 | 2454 | Local* local = x->state()->local_at(java_index)->as_Local(); |
duke@435 | 2455 | assert(local != NULL, "Locals for incoming arguments must have been created"); |
bobv@2036 | 2456 | #ifndef __SOFTFP__ |
bobv@2036 | 2457 | // The java calling convention passes double as long and float as int. |
duke@435 | 2458 | assert(as_ValueType(t)->tag() == local->type()->tag(), "check"); |
bobv@2036 | 2459 | #endif // __SOFTFP__ |
duke@435 | 2460 | local->set_operand(dest); |
duke@435 | 2461 | _instruction_for_operand.at_put_grow(dest->vreg_number(), local, NULL); |
duke@435 | 2462 | java_index += type2size[t]; |
duke@435 | 2463 | } |
duke@435 | 2464 | |
kvn@1215 | 2465 | if (compilation()->env()->dtrace_method_probes()) { |
duke@435 | 2466 | BasicTypeList signature; |
iveresov@2344 | 2467 | signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT)); // thread |
duke@435 | 2468 | signature.append(T_OBJECT); // methodOop |
duke@435 | 2469 | LIR_OprList* args = new LIR_OprList(); |
duke@435 | 2470 | args->append(getThreadPointer()); |
duke@435 | 2471 | LIR_Opr meth = new_register(T_OBJECT); |
jrose@1424 | 2472 | __ oop2reg(method()->constant_encoding(), meth); |
duke@435 | 2473 | args->append(meth); |
duke@435 | 2474 | call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), voidType, NULL); |
duke@435 | 2475 | } |
duke@435 | 2476 | |
duke@435 | 2477 | if (method()->is_synchronized()) { |
duke@435 | 2478 | LIR_Opr obj; |
duke@435 | 2479 | if (method()->is_static()) { |
duke@435 | 2480 | obj = new_register(T_OBJECT); |
jrose@1424 | 2481 | __ oop2reg(method()->holder()->java_mirror()->constant_encoding(), obj); |
duke@435 | 2482 | } else { |
duke@435 | 2483 | Local* receiver = x->state()->local_at(0)->as_Local(); |
duke@435 | 2484 | assert(receiver != NULL, "must already exist"); |
duke@435 | 2485 | obj = receiver->operand(); |
duke@435 | 2486 | } |
duke@435 | 2487 | assert(obj->is_valid(), "must be valid"); |
duke@435 | 2488 | |
duke@435 | 2489 | if (method()->is_synchronized() && GenerateSynchronizationCode) { |
duke@435 | 2490 | LIR_Opr lock = new_register(T_INT); |
duke@435 | 2491 | __ load_stack_address_monitor(0, lock); |
duke@435 | 2492 | |
roland@2174 | 2493 | CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL); |
duke@435 | 2494 | CodeStub* slow_path = new MonitorEnterStub(obj, lock, info); |
duke@435 | 2495 | |
duke@435 | 2496 | // receiver is guaranteed non-NULL so don't need CodeEmitInfo |
duke@435 | 2497 | __ lock_object(syncTempOpr(), obj, lock, new_register(T_OBJECT), slow_path, NULL); |
duke@435 | 2498 | } |
duke@435 | 2499 | } |
duke@435 | 2500 | |
duke@435 | 2501 | // increment invocation counters if needed |
iveresov@2138 | 2502 | if (!method()->is_accessor()) { // Accessors do not have MDOs, so no counting. |
iveresov@2180 | 2503 | CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL); |
iveresov@2138 | 2504 | increment_invocation_counter(info); |
iveresov@2138 | 2505 | } |
duke@435 | 2506 | |
duke@435 | 2507 | // all blocks with a successor must end with an unconditional jump |
duke@435 | 2508 | // to the successor even if they are consecutive |
duke@435 | 2509 | __ jump(x->default_sux()); |
duke@435 | 2510 | } |
duke@435 | 2511 | |
duke@435 | 2512 | |
duke@435 | 2513 | void LIRGenerator::do_OsrEntry(OsrEntry* x) { |
duke@435 | 2514 | // construct our frame and model the production of incoming pointer |
duke@435 | 2515 | // to the OSR buffer. |
duke@435 | 2516 | __ osr_entry(LIR_Assembler::osrBufferPointer()); |
duke@435 | 2517 | LIR_Opr result = rlock_result(x); |
duke@435 | 2518 | __ move(LIR_Assembler::osrBufferPointer(), result); |
duke@435 | 2519 | } |
duke@435 | 2520 | |
duke@435 | 2521 | |
duke@435 | 2522 | void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) { |
twisti@1730 | 2523 | int i = (x->has_receiver() || x->is_invokedynamic()) ? 1 : 0; |
duke@435 | 2524 | for (; i < args->length(); i++) { |
duke@435 | 2525 | LIRItem* param = args->at(i); |
duke@435 | 2526 | LIR_Opr loc = arg_list->at(i); |
duke@435 | 2527 | if (loc->is_register()) { |
duke@435 | 2528 | param->load_item_force(loc); |
duke@435 | 2529 | } else { |
duke@435 | 2530 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 2531 | param->load_for_store(addr->type()); |
iveresov@2344 | 2532 | if (addr->type() == T_OBJECT) { |
iveresov@2344 | 2533 | __ move_wide(param->result(), addr); |
iveresov@2344 | 2534 | } else |
iveresov@2344 | 2535 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
iveresov@2344 | 2536 | __ unaligned_move(param->result(), addr); |
iveresov@2344 | 2537 | } else { |
iveresov@2344 | 2538 | __ move(param->result(), addr); |
iveresov@2344 | 2539 | } |
duke@435 | 2540 | } |
duke@435 | 2541 | } |
duke@435 | 2542 | |
duke@435 | 2543 | if (x->has_receiver()) { |
duke@435 | 2544 | LIRItem* receiver = args->at(0); |
duke@435 | 2545 | LIR_Opr loc = arg_list->at(0); |
duke@435 | 2546 | if (loc->is_register()) { |
duke@435 | 2547 | receiver->load_item_force(loc); |
duke@435 | 2548 | } else { |
duke@435 | 2549 | assert(loc->is_address(), "just checking"); |
duke@435 | 2550 | receiver->load_for_store(T_OBJECT); |
iveresov@2344 | 2551 | __ move_wide(receiver->result(), loc->as_address_ptr()); |
duke@435 | 2552 | } |
duke@435 | 2553 | } |
duke@435 | 2554 | } |
duke@435 | 2555 | |
duke@435 | 2556 | |
duke@435 | 2557 | // Visits all arguments, returns appropriate items without loading them |
duke@435 | 2558 | LIRItemList* LIRGenerator::invoke_visit_arguments(Invoke* x) { |
duke@435 | 2559 | LIRItemList* argument_items = new LIRItemList(); |
duke@435 | 2560 | if (x->has_receiver()) { |
duke@435 | 2561 | LIRItem* receiver = new LIRItem(x->receiver(), this); |
duke@435 | 2562 | argument_items->append(receiver); |
duke@435 | 2563 | } |
twisti@1730 | 2564 | if (x->is_invokedynamic()) { |
twisti@1730 | 2565 | // Insert a dummy for the synthetic MethodHandle argument. |
twisti@1730 | 2566 | argument_items->append(NULL); |
twisti@1730 | 2567 | } |
duke@435 | 2568 | int idx = x->has_receiver() ? 1 : 0; |
duke@435 | 2569 | for (int i = 0; i < x->number_of_arguments(); i++) { |
duke@435 | 2570 | LIRItem* param = new LIRItem(x->argument_at(i), this); |
duke@435 | 2571 | argument_items->append(param); |
duke@435 | 2572 | idx += (param->type()->is_double_word() ? 2 : 1); |
duke@435 | 2573 | } |
duke@435 | 2574 | return argument_items; |
duke@435 | 2575 | } |
duke@435 | 2576 | |
duke@435 | 2577 | |
duke@435 | 2578 | // The invoke with receiver has following phases: |
duke@435 | 2579 | // a) traverse and load/lock receiver; |
duke@435 | 2580 | // b) traverse all arguments -> item-array (invoke_visit_argument) |
duke@435 | 2581 | // c) push receiver on stack |
duke@435 | 2582 | // d) load each of the items and push on stack |
duke@435 | 2583 | // e) unlock receiver |
duke@435 | 2584 | // f) move receiver into receiver-register %o0 |
duke@435 | 2585 | // g) lock result registers and emit call operation |
duke@435 | 2586 | // |
duke@435 | 2587 | // Before issuing a call, we must spill-save all values on stack |
duke@435 | 2588 | // that are in caller-save register. "spill-save" moves thos registers |
duke@435 | 2589 | // either in a free callee-save register or spills them if no free |
duke@435 | 2590 | // callee save register is available. |
duke@435 | 2591 | // |
duke@435 | 2592 | // The problem is where to invoke spill-save. |
duke@435 | 2593 | // - if invoked between e) and f), we may lock callee save |
duke@435 | 2594 | // register in "spill-save" that destroys the receiver register |
duke@435 | 2595 | // before f) is executed |
duke@435 | 2596 | // - if we rearange the f) to be earlier, by loading %o0, it |
duke@435 | 2597 | // may destroy a value on the stack that is currently in %o0 |
duke@435 | 2598 | // and is waiting to be spilled |
duke@435 | 2599 | // - if we keep the receiver locked while doing spill-save, |
duke@435 | 2600 | // we cannot spill it as it is spill-locked |
duke@435 | 2601 | // |
duke@435 | 2602 | void LIRGenerator::do_Invoke(Invoke* x) { |
duke@435 | 2603 | CallingConvention* cc = frame_map()->java_calling_convention(x->signature(), true); |
duke@435 | 2604 | |
duke@435 | 2605 | LIR_OprList* arg_list = cc->args(); |
duke@435 | 2606 | LIRItemList* args = invoke_visit_arguments(x); |
duke@435 | 2607 | LIR_Opr receiver = LIR_OprFact::illegalOpr; |
duke@435 | 2608 | |
duke@435 | 2609 | // setup result register |
duke@435 | 2610 | LIR_Opr result_register = LIR_OprFact::illegalOpr; |
duke@435 | 2611 | if (x->type() != voidType) { |
duke@435 | 2612 | result_register = result_register_for(x->type()); |
duke@435 | 2613 | } |
duke@435 | 2614 | |
duke@435 | 2615 | CodeEmitInfo* info = state_for(x, x->state()); |
duke@435 | 2616 | |
twisti@1730 | 2617 | // invokedynamics can deoptimize. |
twisti@1739 | 2618 | CodeEmitInfo* deopt_info = x->is_invokedynamic() ? state_for(x, x->state_before()) : NULL; |
twisti@1730 | 2619 | |
duke@435 | 2620 | invoke_load_arguments(x, args, arg_list); |
duke@435 | 2621 | |
duke@435 | 2622 | if (x->has_receiver()) { |
duke@435 | 2623 | args->at(0)->load_item_force(LIR_Assembler::receiverOpr()); |
duke@435 | 2624 | receiver = args->at(0)->result(); |
duke@435 | 2625 | } |
duke@435 | 2626 | |
duke@435 | 2627 | // emit invoke code |
duke@435 | 2628 | bool optimized = x->target_is_loaded() && x->target_is_final(); |
duke@435 | 2629 | assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match"); |
duke@435 | 2630 | |
twisti@1919 | 2631 | // JSR 292 |
twisti@1919 | 2632 | // Preserve the SP over MethodHandle call sites. |
twisti@1919 | 2633 | ciMethod* target = x->target(); |
twisti@1919 | 2634 | if (target->is_method_handle_invoke()) { |
twisti@1919 | 2635 | info->set_is_method_handle_invoke(true); |
twisti@1919 | 2636 | __ move(FrameMap::stack_pointer(), FrameMap::method_handle_invoke_SP_save_opr()); |
twisti@1919 | 2637 | } |
twisti@1919 | 2638 | |
duke@435 | 2639 | switch (x->code()) { |
duke@435 | 2640 | case Bytecodes::_invokestatic: |
twisti@1919 | 2641 | __ call_static(target, result_register, |
duke@435 | 2642 | SharedRuntime::get_resolve_static_call_stub(), |
duke@435 | 2643 | arg_list, info); |
duke@435 | 2644 | break; |
duke@435 | 2645 | case Bytecodes::_invokespecial: |
duke@435 | 2646 | case Bytecodes::_invokevirtual: |
duke@435 | 2647 | case Bytecodes::_invokeinterface: |
duke@435 | 2648 | // for final target we still produce an inline cache, in order |
duke@435 | 2649 | // to be able to call mixed mode |
duke@435 | 2650 | if (x->code() == Bytecodes::_invokespecial || optimized) { |
twisti@1919 | 2651 | __ call_opt_virtual(target, receiver, result_register, |
duke@435 | 2652 | SharedRuntime::get_resolve_opt_virtual_call_stub(), |
duke@435 | 2653 | arg_list, info); |
duke@435 | 2654 | } else if (x->vtable_index() < 0) { |
twisti@1919 | 2655 | __ call_icvirtual(target, receiver, result_register, |
duke@435 | 2656 | SharedRuntime::get_resolve_virtual_call_stub(), |
duke@435 | 2657 | arg_list, info); |
duke@435 | 2658 | } else { |
duke@435 | 2659 | int entry_offset = instanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size(); |
duke@435 | 2660 | int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes(); |
twisti@1919 | 2661 | __ call_virtual(target, receiver, result_register, vtable_offset, arg_list, info); |
duke@435 | 2662 | } |
duke@435 | 2663 | break; |
twisti@1730 | 2664 | case Bytecodes::_invokedynamic: { |
twisti@1730 | 2665 | ciBytecodeStream bcs(x->scope()->method()); |
roland@2174 | 2666 | bcs.force_bci(x->state()->bci()); |
twisti@1730 | 2667 | assert(bcs.cur_bc() == Bytecodes::_invokedynamic, "wrong stream"); |
twisti@1730 | 2668 | ciCPCache* cpcache = bcs.get_cpcache(); |
twisti@1730 | 2669 | |
twisti@1730 | 2670 | // Get CallSite offset from constant pool cache pointer. |
twisti@1730 | 2671 | int index = bcs.get_method_index(); |
twisti@1730 | 2672 | size_t call_site_offset = cpcache->get_f1_offset(index); |
twisti@1730 | 2673 | |
twisti@1730 | 2674 | // If this invokedynamic call site hasn't been executed yet in |
twisti@1730 | 2675 | // the interpreter, the CallSite object in the constant pool |
twisti@1730 | 2676 | // cache is still null and we need to deoptimize. |
twisti@1730 | 2677 | if (cpcache->is_f1_null_at(index)) { |
twisti@1730 | 2678 | // Cannot re-use same xhandlers for multiple CodeEmitInfos, so |
twisti@1730 | 2679 | // clone all handlers. This is handled transparently in other |
twisti@1730 | 2680 | // places by the CodeEmitInfo cloning logic but is handled |
twisti@1730 | 2681 | // specially here because a stub isn't being used. |
twisti@1730 | 2682 | x->set_exception_handlers(new XHandlers(x->exception_handlers())); |
twisti@1730 | 2683 | |
twisti@1730 | 2684 | DeoptimizeStub* deopt_stub = new DeoptimizeStub(deopt_info); |
twisti@1730 | 2685 | __ jump(deopt_stub); |
twisti@1730 | 2686 | } |
twisti@1730 | 2687 | |
twisti@1730 | 2688 | // Use the receiver register for the synthetic MethodHandle |
twisti@1730 | 2689 | // argument. |
twisti@1730 | 2690 | receiver = LIR_Assembler::receiverOpr(); |
twisti@1730 | 2691 | LIR_Opr tmp = new_register(objectType); |
twisti@1730 | 2692 | |
twisti@1730 | 2693 | // Load CallSite object from constant pool cache. |
twisti@1730 | 2694 | __ oop2reg(cpcache->constant_encoding(), tmp); |
twisti@1730 | 2695 | __ load(new LIR_Address(tmp, call_site_offset, T_OBJECT), tmp); |
twisti@1730 | 2696 | |
twisti@1730 | 2697 | // Load target MethodHandle from CallSite object. |
jrose@2639 | 2698 | __ load(new LIR_Address(tmp, java_lang_invoke_CallSite::target_offset_in_bytes(), T_OBJECT), receiver); |
twisti@1730 | 2699 | |
twisti@1919 | 2700 | __ call_dynamic(target, receiver, result_register, |
twisti@1730 | 2701 | SharedRuntime::get_resolve_opt_virtual_call_stub(), |
twisti@1730 | 2702 | arg_list, info); |
twisti@1730 | 2703 | break; |
twisti@1730 | 2704 | } |
duke@435 | 2705 | default: |
duke@435 | 2706 | ShouldNotReachHere(); |
duke@435 | 2707 | break; |
duke@435 | 2708 | } |
duke@435 | 2709 | |
twisti@1919 | 2710 | // JSR 292 |
twisti@1919 | 2711 | // Restore the SP after MethodHandle call sites. |
twisti@1919 | 2712 | if (target->is_method_handle_invoke()) { |
twisti@1919 | 2713 | __ move(FrameMap::method_handle_invoke_SP_save_opr(), FrameMap::stack_pointer()); |
twisti@1919 | 2714 | } |
twisti@1919 | 2715 | |
duke@435 | 2716 | if (x->type()->is_float() || x->type()->is_double()) { |
duke@435 | 2717 | // Force rounding of results from non-strictfp when in strictfp |
duke@435 | 2718 | // scope (or when we don't know the strictness of the callee, to |
duke@435 | 2719 | // be safe.) |
duke@435 | 2720 | if (method()->is_strict()) { |
duke@435 | 2721 | if (!x->target_is_loaded() || !x->target_is_strictfp()) { |
duke@435 | 2722 | result_register = round_item(result_register); |
duke@435 | 2723 | } |
duke@435 | 2724 | } |
duke@435 | 2725 | } |
duke@435 | 2726 | |
duke@435 | 2727 | if (result_register->is_valid()) { |
duke@435 | 2728 | LIR_Opr result = rlock_result(x); |
duke@435 | 2729 | __ move(result_register, result); |
duke@435 | 2730 | } |
duke@435 | 2731 | } |
duke@435 | 2732 | |
duke@435 | 2733 | |
duke@435 | 2734 | void LIRGenerator::do_FPIntrinsics(Intrinsic* x) { |
duke@435 | 2735 | assert(x->number_of_arguments() == 1, "wrong type"); |
duke@435 | 2736 | LIRItem value (x->argument_at(0), this); |
duke@435 | 2737 | LIR_Opr reg = rlock_result(x); |
duke@435 | 2738 | value.load_item(); |
duke@435 | 2739 | LIR_Opr tmp = force_to_spill(value.result(), as_BasicType(x->type())); |
duke@435 | 2740 | __ move(tmp, reg); |
duke@435 | 2741 | } |
duke@435 | 2742 | |
duke@435 | 2743 | |
duke@435 | 2744 | |
duke@435 | 2745 | // Code for : x->x() {x->cond()} x->y() ? x->tval() : x->fval() |
duke@435 | 2746 | void LIRGenerator::do_IfOp(IfOp* x) { |
duke@435 | 2747 | #ifdef ASSERT |
duke@435 | 2748 | { |
duke@435 | 2749 | ValueTag xtag = x->x()->type()->tag(); |
duke@435 | 2750 | ValueTag ttag = x->tval()->type()->tag(); |
duke@435 | 2751 | assert(xtag == intTag || xtag == objectTag, "cannot handle others"); |
duke@435 | 2752 | assert(ttag == addressTag || ttag == intTag || ttag == objectTag || ttag == longTag, "cannot handle others"); |
duke@435 | 2753 | assert(ttag == x->fval()->type()->tag(), "cannot handle others"); |
duke@435 | 2754 | } |
duke@435 | 2755 | #endif |
duke@435 | 2756 | |
duke@435 | 2757 | LIRItem left(x->x(), this); |
duke@435 | 2758 | LIRItem right(x->y(), this); |
duke@435 | 2759 | left.load_item(); |
duke@435 | 2760 | if (can_inline_as_constant(right.value())) { |
duke@435 | 2761 | right.dont_load_item(); |
duke@435 | 2762 | } else { |
duke@435 | 2763 | right.load_item(); |
duke@435 | 2764 | } |
duke@435 | 2765 | |
duke@435 | 2766 | LIRItem t_val(x->tval(), this); |
duke@435 | 2767 | LIRItem f_val(x->fval(), this); |
duke@435 | 2768 | t_val.dont_load_item(); |
duke@435 | 2769 | f_val.dont_load_item(); |
duke@435 | 2770 | LIR_Opr reg = rlock_result(x); |
duke@435 | 2771 | |
duke@435 | 2772 | __ cmp(lir_cond(x->cond()), left.result(), right.result()); |
iveresov@2412 | 2773 | __ cmove(lir_cond(x->cond()), t_val.result(), f_val.result(), reg, as_BasicType(x->x()->type())); |
duke@435 | 2774 | } |
duke@435 | 2775 | |
duke@435 | 2776 | |
duke@435 | 2777 | void LIRGenerator::do_Intrinsic(Intrinsic* x) { |
duke@435 | 2778 | switch (x->id()) { |
duke@435 | 2779 | case vmIntrinsics::_intBitsToFloat : |
duke@435 | 2780 | case vmIntrinsics::_doubleToRawLongBits : |
duke@435 | 2781 | case vmIntrinsics::_longBitsToDouble : |
duke@435 | 2782 | case vmIntrinsics::_floatToRawIntBits : { |
duke@435 | 2783 | do_FPIntrinsics(x); |
duke@435 | 2784 | break; |
duke@435 | 2785 | } |
duke@435 | 2786 | |
duke@435 | 2787 | case vmIntrinsics::_currentTimeMillis: { |
duke@435 | 2788 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 2789 | LIR_Opr reg = result_register_for(x->type()); |
duke@435 | 2790 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, os::javaTimeMillis), getThreadTemp(), |
duke@435 | 2791 | reg, new LIR_OprList()); |
duke@435 | 2792 | LIR_Opr result = rlock_result(x); |
duke@435 | 2793 | __ move(reg, result); |
duke@435 | 2794 | break; |
duke@435 | 2795 | } |
duke@435 | 2796 | |
duke@435 | 2797 | case vmIntrinsics::_nanoTime: { |
duke@435 | 2798 | assert(x->number_of_arguments() == 0, "wrong type"); |
duke@435 | 2799 | LIR_Opr reg = result_register_for(x->type()); |
duke@435 | 2800 | __ call_runtime_leaf(CAST_FROM_FN_PTR(address, os::javaTimeNanos), getThreadTemp(), |
duke@435 | 2801 | reg, new LIR_OprList()); |
duke@435 | 2802 | LIR_Opr result = rlock_result(x); |
duke@435 | 2803 | __ move(reg, result); |
duke@435 | 2804 | break; |
duke@435 | 2805 | } |
duke@435 | 2806 | |
duke@435 | 2807 | case vmIntrinsics::_Object_init: do_RegisterFinalizer(x); break; |
duke@435 | 2808 | case vmIntrinsics::_getClass: do_getClass(x); break; |
duke@435 | 2809 | case vmIntrinsics::_currentThread: do_currentThread(x); break; |
duke@435 | 2810 | |
duke@435 | 2811 | case vmIntrinsics::_dlog: // fall through |
duke@435 | 2812 | case vmIntrinsics::_dlog10: // fall through |
duke@435 | 2813 | case vmIntrinsics::_dabs: // fall through |
duke@435 | 2814 | case vmIntrinsics::_dsqrt: // fall through |
duke@435 | 2815 | case vmIntrinsics::_dtan: // fall through |
duke@435 | 2816 | case vmIntrinsics::_dsin : // fall through |
duke@435 | 2817 | case vmIntrinsics::_dcos : do_MathIntrinsic(x); break; |
duke@435 | 2818 | case vmIntrinsics::_arraycopy: do_ArrayCopy(x); break; |
duke@435 | 2819 | |
duke@435 | 2820 | // java.nio.Buffer.checkIndex |
duke@435 | 2821 | case vmIntrinsics::_checkIndex: do_NIOCheckIndex(x); break; |
duke@435 | 2822 | |
duke@435 | 2823 | case vmIntrinsics::_compareAndSwapObject: |
duke@435 | 2824 | do_CompareAndSwap(x, objectType); |
duke@435 | 2825 | break; |
duke@435 | 2826 | case vmIntrinsics::_compareAndSwapInt: |
duke@435 | 2827 | do_CompareAndSwap(x, intType); |
duke@435 | 2828 | break; |
duke@435 | 2829 | case vmIntrinsics::_compareAndSwapLong: |
duke@435 | 2830 | do_CompareAndSwap(x, longType); |
duke@435 | 2831 | break; |
duke@435 | 2832 | |
duke@435 | 2833 | // sun.misc.AtomicLongCSImpl.attemptUpdate |
duke@435 | 2834 | case vmIntrinsics::_attemptUpdate: |
duke@435 | 2835 | do_AttemptUpdate(x); |
duke@435 | 2836 | break; |
duke@435 | 2837 | |
johnc@2781 | 2838 | case vmIntrinsics::_Reference_get: |
johnc@2781 | 2839 | do_Reference_get(x); |
johnc@2781 | 2840 | break; |
johnc@2781 | 2841 | |
duke@435 | 2842 | default: ShouldNotReachHere(); break; |
duke@435 | 2843 | } |
duke@435 | 2844 | } |
duke@435 | 2845 | |
duke@435 | 2846 | void LIRGenerator::do_ProfileCall(ProfileCall* x) { |
duke@435 | 2847 | // Need recv in a temporary register so it interferes with the other temporaries |
duke@435 | 2848 | LIR_Opr recv = LIR_OprFact::illegalOpr; |
duke@435 | 2849 | LIR_Opr mdo = new_register(T_OBJECT); |
iveresov@2138 | 2850 | // tmp is used to hold the counters on SPARC |
iveresov@2138 | 2851 | LIR_Opr tmp = new_pointer_register(); |
duke@435 | 2852 | if (x->recv() != NULL) { |
duke@435 | 2853 | LIRItem value(x->recv(), this); |
duke@435 | 2854 | value.load_item(); |
duke@435 | 2855 | recv = new_register(T_OBJECT); |
duke@435 | 2856 | __ move(value.result(), recv); |
duke@435 | 2857 | } |
duke@435 | 2858 | __ profile_call(x->method(), x->bci_of_invoke(), mdo, recv, tmp, x->known_holder()); |
duke@435 | 2859 | } |
duke@435 | 2860 | |
iveresov@2138 | 2861 | void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) { |
iveresov@2138 | 2862 | // We can safely ignore accessors here, since c2 will inline them anyway, |
iveresov@2138 | 2863 | // accessors are also always mature. |
iveresov@2138 | 2864 | if (!x->inlinee()->is_accessor()) { |
iveresov@2138 | 2865 | CodeEmitInfo* info = state_for(x, x->state(), true); |
iveresov@2138 | 2866 | // Increment invocation counter, don't notify the runtime, because we don't inline loops, |
iveresov@2138 | 2867 | increment_event_counter_impl(info, x->inlinee(), 0, InvocationEntryBci, false, false); |
iveresov@2138 | 2868 | } |
duke@435 | 2869 | } |
duke@435 | 2870 | |
iveresov@2138 | 2871 | void LIRGenerator::increment_event_counter(CodeEmitInfo* info, int bci, bool backedge) { |
iveresov@2138 | 2872 | int freq_log; |
iveresov@2138 | 2873 | int level = compilation()->env()->comp_level(); |
iveresov@2138 | 2874 | if (level == CompLevel_limited_profile) { |
iveresov@2138 | 2875 | freq_log = (backedge ? Tier2BackedgeNotifyFreqLog : Tier2InvokeNotifyFreqLog); |
iveresov@2138 | 2876 | } else if (level == CompLevel_full_profile) { |
iveresov@2138 | 2877 | freq_log = (backedge ? Tier3BackedgeNotifyFreqLog : Tier3InvokeNotifyFreqLog); |
iveresov@2138 | 2878 | } else { |
iveresov@2138 | 2879 | ShouldNotReachHere(); |
iveresov@2138 | 2880 | } |
iveresov@2138 | 2881 | // Increment the appropriate invocation/backedge counter and notify the runtime. |
iveresov@2138 | 2882 | increment_event_counter_impl(info, info->scope()->method(), (1 << freq_log) - 1, bci, backedge, true); |
iveresov@2138 | 2883 | } |
iveresov@2138 | 2884 | |
iveresov@2138 | 2885 | void LIRGenerator::increment_event_counter_impl(CodeEmitInfo* info, |
iveresov@2138 | 2886 | ciMethod *method, int frequency, |
iveresov@2138 | 2887 | int bci, bool backedge, bool notify) { |
iveresov@2138 | 2888 | assert(frequency == 0 || is_power_of_2(frequency + 1), "Frequency must be x^2 - 1 or 0"); |
iveresov@2138 | 2889 | int level = _compilation->env()->comp_level(); |
iveresov@2138 | 2890 | assert(level > CompLevel_simple, "Shouldn't be here"); |
iveresov@2138 | 2891 | |
iveresov@2138 | 2892 | int offset = -1; |
iveresov@2138 | 2893 | LIR_Opr counter_holder = new_register(T_OBJECT); |
iveresov@2138 | 2894 | LIR_Opr meth; |
iveresov@2138 | 2895 | if (level == CompLevel_limited_profile) { |
iveresov@2138 | 2896 | offset = in_bytes(backedge ? methodOopDesc::backedge_counter_offset() : |
iveresov@2138 | 2897 | methodOopDesc::invocation_counter_offset()); |
iveresov@2138 | 2898 | __ oop2reg(method->constant_encoding(), counter_holder); |
iveresov@2138 | 2899 | meth = counter_holder; |
iveresov@2138 | 2900 | } else if (level == CompLevel_full_profile) { |
iveresov@2138 | 2901 | offset = in_bytes(backedge ? methodDataOopDesc::backedge_counter_offset() : |
iveresov@2138 | 2902 | methodDataOopDesc::invocation_counter_offset()); |
iveresov@2349 | 2903 | ciMethodData* md = method->method_data_or_null(); |
iveresov@2349 | 2904 | assert(md != NULL, "Sanity"); |
iveresov@2349 | 2905 | __ oop2reg(md->constant_encoding(), counter_holder); |
iveresov@2138 | 2906 | meth = new_register(T_OBJECT); |
iveresov@2138 | 2907 | __ oop2reg(method->constant_encoding(), meth); |
iveresov@2138 | 2908 | } else { |
iveresov@2138 | 2909 | ShouldNotReachHere(); |
iveresov@2138 | 2910 | } |
iveresov@2138 | 2911 | LIR_Address* counter = new LIR_Address(counter_holder, offset, T_INT); |
iveresov@2138 | 2912 | LIR_Opr result = new_register(T_INT); |
iveresov@2138 | 2913 | __ load(counter, result); |
iveresov@2138 | 2914 | __ add(result, LIR_OprFact::intConst(InvocationCounter::count_increment), result); |
iveresov@2138 | 2915 | __ store(result, counter); |
iveresov@2138 | 2916 | if (notify) { |
iveresov@2138 | 2917 | LIR_Opr mask = load_immediate(frequency << InvocationCounter::count_shift, T_INT); |
iveresov@2138 | 2918 | __ logical_and(result, mask, result); |
iveresov@2138 | 2919 | __ cmp(lir_cond_equal, result, LIR_OprFact::intConst(0)); |
iveresov@2138 | 2920 | // The bci for info can point to cmp for if's we want the if bci |
iveresov@2138 | 2921 | CodeStub* overflow = new CounterOverflowStub(info, bci, meth); |
iveresov@2138 | 2922 | __ branch(lir_cond_equal, T_INT, overflow); |
iveresov@2138 | 2923 | __ branch_destination(overflow->continuation()); |
iveresov@2138 | 2924 | } |
iveresov@2138 | 2925 | } |
duke@435 | 2926 | |
never@2486 | 2927 | void LIRGenerator::do_RuntimeCall(RuntimeCall* x) { |
never@2486 | 2928 | LIR_OprList* args = new LIR_OprList(x->number_of_arguments()); |
never@2486 | 2929 | BasicTypeList* signature = new BasicTypeList(x->number_of_arguments()); |
never@2486 | 2930 | |
never@2486 | 2931 | if (x->pass_thread()) { |
never@2486 | 2932 | signature->append(T_ADDRESS); |
never@2486 | 2933 | args->append(getThreadPointer()); |
never@2486 | 2934 | } |
never@2486 | 2935 | |
never@2486 | 2936 | for (int i = 0; i < x->number_of_arguments(); i++) { |
never@2486 | 2937 | Value a = x->argument_at(i); |
never@2486 | 2938 | LIRItem* item = new LIRItem(a, this); |
never@2486 | 2939 | item->load_item(); |
never@2486 | 2940 | args->append(item->result()); |
never@2486 | 2941 | signature->append(as_BasicType(a->type())); |
never@2486 | 2942 | } |
never@2486 | 2943 | |
never@2486 | 2944 | LIR_Opr result = call_runtime(signature, args, x->entry(), x->type(), NULL); |
never@2486 | 2945 | if (x->type() == voidType) { |
never@2486 | 2946 | set_no_result(x); |
never@2486 | 2947 | } else { |
never@2486 | 2948 | __ move(result, rlock_result(x)); |
never@2486 | 2949 | } |
never@2486 | 2950 | } |
never@2486 | 2951 | |
duke@435 | 2952 | LIR_Opr LIRGenerator::call_runtime(Value arg1, address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2953 | LIRItemList args(1); |
duke@435 | 2954 | LIRItem value(arg1, this); |
duke@435 | 2955 | args.append(&value); |
duke@435 | 2956 | BasicTypeList signature; |
duke@435 | 2957 | signature.append(as_BasicType(arg1->type())); |
duke@435 | 2958 | |
duke@435 | 2959 | return call_runtime(&signature, &args, entry, result_type, info); |
duke@435 | 2960 | } |
duke@435 | 2961 | |
duke@435 | 2962 | |
duke@435 | 2963 | LIR_Opr LIRGenerator::call_runtime(Value arg1, Value arg2, address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2964 | LIRItemList args(2); |
duke@435 | 2965 | LIRItem value1(arg1, this); |
duke@435 | 2966 | LIRItem value2(arg2, this); |
duke@435 | 2967 | args.append(&value1); |
duke@435 | 2968 | args.append(&value2); |
duke@435 | 2969 | BasicTypeList signature; |
duke@435 | 2970 | signature.append(as_BasicType(arg1->type())); |
duke@435 | 2971 | signature.append(as_BasicType(arg2->type())); |
duke@435 | 2972 | |
duke@435 | 2973 | return call_runtime(&signature, &args, entry, result_type, info); |
duke@435 | 2974 | } |
duke@435 | 2975 | |
duke@435 | 2976 | |
duke@435 | 2977 | LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIR_OprList* args, |
duke@435 | 2978 | address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 2979 | // get a result register |
duke@435 | 2980 | LIR_Opr phys_reg = LIR_OprFact::illegalOpr; |
duke@435 | 2981 | LIR_Opr result = LIR_OprFact::illegalOpr; |
duke@435 | 2982 | if (result_type->tag() != voidTag) { |
duke@435 | 2983 | result = new_register(result_type); |
duke@435 | 2984 | phys_reg = result_register_for(result_type); |
duke@435 | 2985 | } |
duke@435 | 2986 | |
duke@435 | 2987 | // move the arguments into the correct location |
duke@435 | 2988 | CallingConvention* cc = frame_map()->c_calling_convention(signature); |
duke@435 | 2989 | assert(cc->length() == args->length(), "argument mismatch"); |
duke@435 | 2990 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 2991 | LIR_Opr arg = args->at(i); |
duke@435 | 2992 | LIR_Opr loc = cc->at(i); |
duke@435 | 2993 | if (loc->is_register()) { |
duke@435 | 2994 | __ move(arg, loc); |
duke@435 | 2995 | } else { |
duke@435 | 2996 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 2997 | // if (!can_store_as_constant(arg)) { |
duke@435 | 2998 | // LIR_Opr tmp = new_register(arg->type()); |
duke@435 | 2999 | // __ move(arg, tmp); |
duke@435 | 3000 | // arg = tmp; |
duke@435 | 3001 | // } |
duke@435 | 3002 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
duke@435 | 3003 | __ unaligned_move(arg, addr); |
duke@435 | 3004 | } else { |
duke@435 | 3005 | __ move(arg, addr); |
duke@435 | 3006 | } |
duke@435 | 3007 | } |
duke@435 | 3008 | } |
duke@435 | 3009 | |
duke@435 | 3010 | if (info) { |
duke@435 | 3011 | __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); |
duke@435 | 3012 | } else { |
duke@435 | 3013 | __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); |
duke@435 | 3014 | } |
duke@435 | 3015 | if (result->is_valid()) { |
duke@435 | 3016 | __ move(phys_reg, result); |
duke@435 | 3017 | } |
duke@435 | 3018 | return result; |
duke@435 | 3019 | } |
duke@435 | 3020 | |
duke@435 | 3021 | |
duke@435 | 3022 | LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIRItemList* args, |
duke@435 | 3023 | address entry, ValueType* result_type, CodeEmitInfo* info) { |
duke@435 | 3024 | // get a result register |
duke@435 | 3025 | LIR_Opr phys_reg = LIR_OprFact::illegalOpr; |
duke@435 | 3026 | LIR_Opr result = LIR_OprFact::illegalOpr; |
duke@435 | 3027 | if (result_type->tag() != voidTag) { |
duke@435 | 3028 | result = new_register(result_type); |
duke@435 | 3029 | phys_reg = result_register_for(result_type); |
duke@435 | 3030 | } |
duke@435 | 3031 | |
duke@435 | 3032 | // move the arguments into the correct location |
duke@435 | 3033 | CallingConvention* cc = frame_map()->c_calling_convention(signature); |
duke@435 | 3034 | |
duke@435 | 3035 | assert(cc->length() == args->length(), "argument mismatch"); |
duke@435 | 3036 | for (int i = 0; i < args->length(); i++) { |
duke@435 | 3037 | LIRItem* arg = args->at(i); |
duke@435 | 3038 | LIR_Opr loc = cc->at(i); |
duke@435 | 3039 | if (loc->is_register()) { |
duke@435 | 3040 | arg->load_item_force(loc); |
duke@435 | 3041 | } else { |
duke@435 | 3042 | LIR_Address* addr = loc->as_address_ptr(); |
duke@435 | 3043 | arg->load_for_store(addr->type()); |
duke@435 | 3044 | if (addr->type() == T_LONG || addr->type() == T_DOUBLE) { |
duke@435 | 3045 | __ unaligned_move(arg->result(), addr); |
duke@435 | 3046 | } else { |
duke@435 | 3047 | __ move(arg->result(), addr); |
duke@435 | 3048 | } |
duke@435 | 3049 | } |
duke@435 | 3050 | } |
duke@435 | 3051 | |
duke@435 | 3052 | if (info) { |
duke@435 | 3053 | __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info); |
duke@435 | 3054 | } else { |
duke@435 | 3055 | __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args()); |
duke@435 | 3056 | } |
duke@435 | 3057 | if (result->is_valid()) { |
duke@435 | 3058 | __ move(phys_reg, result); |
duke@435 | 3059 | } |
duke@435 | 3060 | return result; |
duke@435 | 3061 | } |