aoqi@0: /*
kevinw@8368:  * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@1: /*
aoqi@1:  * This file has been modified by Loongson Technology in 2015. These
aoqi@1:  * modifications are Copyright (c) 2015 Loongson Technology, and are made
aoqi@1:  * available on the same license terms set forth above.
aoqi@1:  */
aoqi@1: 
aoqi@0: #include "precompiled.hpp"
dlong@7598: #include "c1/c1_Defs.hpp"
aoqi@0: #include "c1/c1_Compilation.hpp"
aoqi@0: #include "c1/c1_FrameMap.hpp"
aoqi@0: #include "c1/c1_Instruction.hpp"
aoqi@0: #include "c1/c1_LIRAssembler.hpp"
aoqi@0: #include "c1/c1_LIRGenerator.hpp"
aoqi@0: #include "c1/c1_ValueStack.hpp"
aoqi@0: #include "ci/ciArrayKlass.hpp"
aoqi@0: #include "ci/ciInstance.hpp"
aoqi@0: #include "ci/ciObjArray.hpp"
aoqi@0: #include "runtime/sharedRuntime.hpp"
aoqi@0: #include "runtime/stubRoutines.hpp"
aoqi@0: #include "utilities/bitMap.inline.hpp"
aoqi@0: #include "utilities/macros.hpp"
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: #include "gc_implementation/g1/heapRegion.hpp"
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: #define __ gen()->lir(__FILE__, __LINE__)->
aoqi@0: #else
aoqi@0: #define __ gen()->lir()->
aoqi@0: #endif
aoqi@0: 
dlong@7598: #ifndef PATCHED_ADDR
aoqi@0: #define PATCHED_ADDR  (max_jint)
aoqi@0: #endif
aoqi@0: 
aoqi@0: void PhiResolverState::reset(int max_vregs) {
aoqi@0:   // Initialize array sizes
aoqi@0:   _virtual_operands.at_put_grow(max_vregs - 1, NULL, NULL);
aoqi@0:   _virtual_operands.trunc_to(0);
aoqi@0:   _other_operands.at_put_grow(max_vregs - 1, NULL, NULL);
aoqi@0:   _other_operands.trunc_to(0);
aoqi@0:   _vreg_table.at_put_grow(max_vregs - 1, NULL, NULL);
aoqi@0:   _vreg_table.trunc_to(0);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: //--------------------------------------------------------------
aoqi@0: // PhiResolver
aoqi@0: 
aoqi@0: // Resolves cycles:
aoqi@0: //
aoqi@0: //  r1 := r2  becomes  temp := r1
aoqi@0: //  r2 := r1           r1 := r2
aoqi@0: //                     r2 := temp
aoqi@0: // and orders moves:
aoqi@0: //
aoqi@0: //  r2 := r3  becomes  r1 := r2
aoqi@0: //  r1 := r2           r2 := r3
aoqi@0: 
aoqi@0: PhiResolver::PhiResolver(LIRGenerator* gen, int max_vregs)
aoqi@0:  : _gen(gen)
aoqi@0:  , _state(gen->resolver_state())
aoqi@0:  , _temp(LIR_OprFact::illegalOpr)
aoqi@0: {
aoqi@0:   // reinitialize the shared state arrays
aoqi@0:   _state.reset(max_vregs);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void PhiResolver::emit_move(LIR_Opr src, LIR_Opr dest) {
aoqi@0:   assert(src->is_valid(), "");
aoqi@0:   assert(dest->is_valid(), "");
aoqi@0:   __ move(src, dest);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void PhiResolver::move_temp_to(LIR_Opr dest) {
aoqi@0:   assert(_temp->is_valid(), "");
aoqi@0:   emit_move(_temp, dest);
aoqi@0:   NOT_PRODUCT(_temp = LIR_OprFact::illegalOpr);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void PhiResolver::move_to_temp(LIR_Opr src) {
aoqi@0:   assert(_temp->is_illegal(), "");
aoqi@0:   _temp = _gen->new_register(src->type());
aoqi@0:   emit_move(src, _temp);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Traverse assignment graph in depth first order and generate moves in post order
aoqi@0: // ie. two assignments: b := c, a := b start with node c:
aoqi@0: // Call graph: move(NULL, c) -> move(c, b) -> move(b, a)
aoqi@0: // Generates moves in this order: move b to a and move c to b
aoqi@0: // ie. cycle a := b, b := a start with node a
aoqi@0: // Call graph: move(NULL, a) -> move(a, b) -> move(b, a)
aoqi@0: // Generates moves in this order: move b to temp, move a to b, move temp to a
aoqi@0: void PhiResolver::move(ResolveNode* src, ResolveNode* dest) {
aoqi@0:   if (!dest->visited()) {
aoqi@0:     dest->set_visited();
aoqi@0:     for (int i = dest->no_of_destinations()-1; i >= 0; i --) {
aoqi@0:       move(dest, dest->destination_at(i));
aoqi@0:     }
aoqi@0:   } else if (!dest->start_node()) {
aoqi@0:     // cylce in graph detected
aoqi@0:     assert(_loop == NULL, "only one loop valid!");
aoqi@0:     _loop = dest;
aoqi@0:     move_to_temp(src->operand());
aoqi@0:     return;
aoqi@0:   } // else dest is a start node
aoqi@0: 
aoqi@0:   if (!dest->assigned()) {
aoqi@0:     if (_loop == dest) {
aoqi@0:       move_temp_to(dest->operand());
aoqi@0:       dest->set_assigned();
aoqi@0:     } else if (src != NULL) {
aoqi@0:       emit_move(src->operand(), dest->operand());
aoqi@0:       dest->set_assigned();
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: PhiResolver::~PhiResolver() {
aoqi@0:   int i;
aoqi@0:   // resolve any cycles in moves from and to virtual registers
aoqi@0:   for (i = virtual_operands().length() - 1; i >= 0; i --) {
aoqi@0:     ResolveNode* node = virtual_operands()[i];
aoqi@0:     if (!node->visited()) {
aoqi@0:       _loop = NULL;
aoqi@0:       move(NULL, node);
aoqi@0:       node->set_start_node();
aoqi@0:       assert(_temp->is_illegal(), "move_temp_to() call missing");
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // generate move for move from non virtual register to abitrary destination
aoqi@0:   for (i = other_operands().length() - 1; i >= 0; i --) {
aoqi@0:     ResolveNode* node = other_operands()[i];
aoqi@0:     for (int j = node->no_of_destinations() - 1; j >= 0; j --) {
aoqi@0:       emit_move(node->operand(), node->destination_at(j)->operand());
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) {
aoqi@0:   ResolveNode* node;
aoqi@0:   if (opr->is_virtual()) {
aoqi@0:     int vreg_num = opr->vreg_number();
aoqi@0:     node = vreg_table().at_grow(vreg_num, NULL);
aoqi@0:     assert(node == NULL || node->operand() == opr, "");
aoqi@0:     if (node == NULL) {
aoqi@0:       node = new ResolveNode(opr);
aoqi@0:       vreg_table()[vreg_num] = node;
aoqi@0:     }
aoqi@0:     // Make sure that all virtual operands show up in the list when
aoqi@0:     // they are used as the source of a move.
aoqi@0:     if (source && !virtual_operands().contains(node)) {
aoqi@0:       virtual_operands().append(node);
aoqi@0:     }
aoqi@0:   } else {
aoqi@0:     assert(source, "");
aoqi@0:     node = new ResolveNode(opr);
aoqi@0:     other_operands().append(node);
aoqi@0:   }
aoqi@0:   return node;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void PhiResolver::move(LIR_Opr src, LIR_Opr dest) {
aoqi@0:   assert(dest->is_virtual(), "");
aoqi@0:   // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr();
aoqi@0:   assert(src->is_valid(), "");
aoqi@0:   assert(dest->is_valid(), "");
aoqi@0:   ResolveNode* source = source_node(src);
aoqi@0:   source->append(destination_node(dest));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //--------------------------------------------------------------
aoqi@0: // LIRItem
aoqi@0: 
aoqi@0: void LIRItem::set_result(LIR_Opr opr) {
aoqi@0:   assert(value()->operand()->is_illegal() || value()->operand()->is_constant(), "operand should never change");
aoqi@0:   value()->set_operand(opr);
aoqi@0: 
aoqi@0:   if (opr->is_virtual()) {
aoqi@0:     _gen->_instruction_for_operand.at_put_grow(opr->vreg_number(), value(), NULL);
aoqi@0:   }
aoqi@0: 
aoqi@0:   _result = opr;
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRItem::load_item() {
aoqi@0:   if (result()->is_illegal()) {
aoqi@0:     // update the items result
aoqi@0:     _result = value()->operand();
aoqi@0:   }
aoqi@0:   if (!result()->is_register()) {
aoqi@0:     LIR_Opr reg = _gen->new_register(value()->type());
aoqi@0:     __ move(result(), reg);
aoqi@0:     if (result()->is_constant()) {
aoqi@0:       _result = reg;
aoqi@0:     } else {
aoqi@0:       set_result(reg);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRItem::load_for_store(BasicType type) {
aoqi@0:   if (_gen->can_store_as_constant(value(), type)) {
aoqi@0:     _result = value()->operand();
aoqi@0:     if (!_result->is_constant()) {
aoqi@0:       _result = LIR_OprFact::value_type(value()->type());
aoqi@0:     }
aoqi@0:   } else if (type == T_BYTE || type == T_BOOLEAN) {
aoqi@0:     load_byte_item();
aoqi@0:   } else {
aoqi@0:     load_item();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRItem::load_item_force(LIR_Opr reg) {
aoqi@0:   LIR_Opr r = result();
aoqi@0:   if (r != reg) {
aoqi@0: #if !defined(ARM) && !defined(E500V2)
aoqi@0:     if (r->type() != reg->type()) {
aoqi@0:       // moves between different types need an intervening spill slot
aoqi@0:       r = _gen->force_to_spill(r, reg->type());
aoqi@0:     }
aoqi@0: #endif
aoqi@0:     __ move(r, reg);
aoqi@0:     _result = reg;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: ciObject* LIRItem::get_jobject_constant() const {
aoqi@0:   ObjectType* oc = type()->as_ObjectType();
aoqi@0:   if (oc) {
aoqi@0:     return oc->constant_value();
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: jint LIRItem::get_jint_constant() const {
aoqi@0:   assert(is_constant() && value() != NULL, "");
aoqi@0:   assert(type()->as_IntConstant() != NULL, "type check");
aoqi@0:   return type()->as_IntConstant()->value();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: jint LIRItem::get_address_constant() const {
aoqi@0:   assert(is_constant() && value() != NULL, "");
aoqi@0:   assert(type()->as_AddressConstant() != NULL, "type check");
aoqi@0:   return type()->as_AddressConstant()->value();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: jfloat LIRItem::get_jfloat_constant() const {
aoqi@0:   assert(is_constant() && value() != NULL, "");
aoqi@0:   assert(type()->as_FloatConstant() != NULL, "type check");
aoqi@0:   return type()->as_FloatConstant()->value();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: jdouble LIRItem::get_jdouble_constant() const {
aoqi@0:   assert(is_constant() && value() != NULL, "");
aoqi@0:   assert(type()->as_DoubleConstant() != NULL, "type check");
aoqi@0:   return type()->as_DoubleConstant()->value();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: jlong LIRItem::get_jlong_constant() const {
aoqi@0:   assert(is_constant() && value() != NULL, "");
aoqi@0:   assert(type()->as_LongConstant() != NULL, "type check");
aoqi@0:   return type()->as_LongConstant()->value();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: //--------------------------------------------------------------
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::init() {
aoqi@0:   _bs = Universe::heap()->barrier_set();
aoqi@1: #ifdef MIPS64
aoqi@1:         assert(_bs->kind() == BarrierSet::CardTableModRef, "Wrong barrier set kind");
aoqi@1:         CardTableModRefBS* ct = (CardTableModRefBS*)_bs;
aoqi@1:         assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
aoqi@1:         //_card_table_base = new LIR_Const((intptr_t)ct->byte_map_base);
aoqi@1:         //        //FIXME, untested in 32bit. by aoqi
aoqi@1:         _card_table_base = new LIR_Const(ct->byte_map_base);
aoqi@1: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::block_do_prolog(BlockBegin* block) {
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintIRWithLIR) {
aoqi@0:     block->print();
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   // set up the list of LIR instructions
aoqi@0:   assert(block->lir() == NULL, "LIR list already computed for this block");
aoqi@0:   _lir = new LIR_List(compilation(), block);
aoqi@0:   block->set_lir(_lir);
aoqi@0: 
aoqi@0:   __ branch_destination(block->label());
aoqi@0: 
aoqi@0:   if (LIRTraceExecution &&
aoqi@0:       Compilation::current()->hir()->start()->block_id() != block->block_id() &&
aoqi@0:       !block->is_set(BlockBegin::exception_entry_flag)) {
aoqi@0:     assert(block->lir()->instructions_list()->length() == 1, "should come right after br_dst");
aoqi@0:     trace_block_entry(block);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::block_do_epilog(BlockBegin* block) {
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintIRWithLIR) {
aoqi@0:     tty->cr();
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   // LIR_Opr for unpinned constants shouldn't be referenced by other
aoqi@0:   // blocks so clear them out after processing the block.
aoqi@0:   for (int i = 0; i < _unpinned_constants.length(); i++) {
aoqi@0:     _unpinned_constants.at(i)->clear_operand();
aoqi@0:   }
aoqi@0:   _unpinned_constants.trunc_to(0);
aoqi@0: 
aoqi@0:   // clear our any registers for other local constants
aoqi@0:   _constants.trunc_to(0);
aoqi@0:   _reg_for_constants.trunc_to(0);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::block_do(BlockBegin* block) {
aoqi@0:   CHECK_BAILOUT();
aoqi@0: 
aoqi@0:   block_do_prolog(block);
aoqi@0:   set_block(block);
aoqi@0: 
aoqi@0:   for (Instruction* instr = block; instr != NULL; instr = instr->next()) {
aoqi@0:     if (instr->is_pinned()) do_root(instr);
aoqi@0:   }
aoqi@0: 
aoqi@0:   set_block(NULL);
aoqi@0:   block_do_epilog(block);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //-------------------------LIRGenerator-----------------------------
aoqi@0: 
aoqi@0: // This is where the tree-walk starts; instr must be root;
aoqi@0: void LIRGenerator::do_root(Value instr) {
aoqi@0:   CHECK_BAILOUT();
aoqi@0: 
aoqi@0:   InstructionMark im(compilation(), instr);
aoqi@0: 
aoqi@0:   assert(instr->is_pinned(), "use only with roots");
aoqi@0:   assert(instr->subst() == instr, "shouldn't have missed substitution");
aoqi@0: 
aoqi@0:   instr->visit(this);
aoqi@0: 
aoqi@0:   assert(!instr->has_uses() || instr->operand()->is_valid() ||
aoqi@0:          instr->as_Constant() != NULL || bailed_out(), "invalid item set");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // This is called for each node in tree; the walk stops if a root is reached
aoqi@0: void LIRGenerator::walk(Value instr) {
aoqi@0:   InstructionMark im(compilation(), instr);
aoqi@0:   //stop walk when encounter a root
aoqi@0:   if (instr->is_pinned() && instr->as_Phi() == NULL || instr->operand()->is_valid()) {
aoqi@0:     assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited");
aoqi@0:   } else {
aoqi@0:     assert(instr->subst() == instr, "shouldn't have missed substitution");
aoqi@0:     instr->visit(this);
aoqi@0:     // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use");
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: CodeEmitInfo* LIRGenerator::state_for(Instruction* x, ValueStack* state, bool ignore_xhandler) {
aoqi@0:   assert(state != NULL, "state must be defined");
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:   state->verify();
aoqi@0: #endif
aoqi@0: 
aoqi@0:   ValueStack* s = state;
aoqi@0:   for_each_state(s) {
aoqi@0:     if (s->kind() == ValueStack::EmptyExceptionState) {
aoqi@0:       assert(s->stack_size() == 0 && s->locals_size() == 0 && (s->locks_size() == 0 || s->locks_size() == 1), "state must be empty");
aoqi@0:       continue;
aoqi@0:     }
aoqi@0: 
aoqi@0:     int index;
aoqi@0:     Value value;
aoqi@0:     for_each_stack_value(s, index, value) {
aoqi@0:       assert(value->subst() == value, "missed substitution");
aoqi@0:       if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) {
aoqi@0:         walk(value);
aoqi@0:         assert(value->operand()->is_valid(), "must be evaluated now");
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     int bci = s->bci();
aoqi@0:     IRScope* scope = s->scope();
aoqi@0:     ciMethod* method = scope->method();
aoqi@0: 
aoqi@0:     MethodLivenessResult liveness = method->liveness_at_bci(bci);
aoqi@0:     if (bci == SynchronizationEntryBCI) {
aoqi@0:       if (x->as_ExceptionObject() || x->as_Throw()) {
aoqi@0:         // all locals are dead on exit from the synthetic unlocker
aoqi@0:         liveness.clear();
aoqi@0:       } else {
aoqi@0:         assert(x->as_MonitorEnter() || x->as_ProfileInvoke(), "only other cases are MonitorEnter and ProfileInvoke");
aoqi@0:       }
aoqi@0:     }
aoqi@0:     if (!liveness.is_valid()) {
aoqi@0:       // Degenerate or breakpointed method.
aoqi@0:       bailout("Degenerate or breakpointed method");
aoqi@0:     } else {
aoqi@0:       assert((int)liveness.size() == s->locals_size(), "error in use of liveness");
aoqi@0:       for_each_local_value(s, index, value) {
aoqi@0:         assert(value->subst() == value, "missed substition");
aoqi@0:         if (liveness.at(index) && !value->type()->is_illegal()) {
aoqi@0:           if (!value->is_pinned() && value->as_Constant() == NULL && value->as_Local() == NULL) {
aoqi@0:             walk(value);
aoqi@0:             assert(value->operand()->is_valid(), "must be evaluated now");
aoqi@0:           }
aoqi@0:         } else {
aoqi@0:           // NULL out this local so that linear scan can assume that all non-NULL values are live.
aoqi@0:           s->invalidate_local(index);
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   return new CodeEmitInfo(state, ignore_xhandler ? NULL : x->exception_handlers(), x->check_flag(Instruction::DeoptimizeOnException));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: CodeEmitInfo* LIRGenerator::state_for(Instruction* x) {
aoqi@0:   return state_for(x, x->exception_state());
aoqi@0: }
aoqi@0: 
aoqi@0: 
rbackman@7058: void LIRGenerator::klass2reg_with_patching(LIR_Opr r, ciMetadata* obj, CodeEmitInfo* info, bool need_resolve) {
rbackman@7058:   /* C2 relies on constant pool entries being resolved (ciTypeFlow), so if TieredCompilation
rbackman@7058:    * is active and the class hasn't yet been resolved we need to emit a patch that resolves
rbackman@7058:    * the class. */
rbackman@7058:   if ((TieredCompilation && need_resolve) || !obj->is_loaded() || PatchALot) {
aoqi@0:     assert(info != NULL, "info must be set if class is not loaded");
aoqi@0:     __ klass2reg_patch(NULL, r, info);
aoqi@0:   } else {
aoqi@0:     // no patching needed
aoqi@0:     __ metadata2reg(obj->constant_encoding(), r);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::array_range_check(LIR_Opr array, LIR_Opr index,
aoqi@0:                                     CodeEmitInfo* null_check_info, CodeEmitInfo* range_check_info) {
aoqi@0:   CodeStub* stub = new RangeCheckStub(range_check_info, index);
aoqi@0:   if (index->is_constant()) {
aoqi@1: #ifndef MIPS64
aoqi@0:     cmp_mem_int(lir_cond_belowEqual, array, arrayOopDesc::length_offset_in_bytes(),
aoqi@0:                 index->as_jint(), null_check_info);
aoqi@0:     __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch
aoqi@1: #else
aoqi@1:         LIR_Opr left = LIR_OprFact::address(new LIR_Address(array, arrayOopDesc::length_offset_in_bytes(), T_INT));
aoqi@1:         LIR_Opr right = LIR_OprFact::intConst(index->as_jint());
aoqi@1: 	__ null_check_for_branch(lir_cond_belowEqual, left, right, null_check_info);
aoqi@1:         __ branch(lir_cond_belowEqual, left, right ,T_INT, stub); // forward branch
aoqi@1: #endif
aoqi@0:   } else {
aoqi@1: #ifndef MIPS64
aoqi@0:     cmp_reg_mem(lir_cond_aboveEqual, index, array,
aoqi@0:                 arrayOopDesc::length_offset_in_bytes(), T_INT, null_check_info);
aoqi@0:     __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch
aoqi@1: #else
aoqi@1:         LIR_Opr left = index;
aoqi@1:         LIR_Opr right = LIR_OprFact::address(new LIR_Address( array, arrayOopDesc::length_offset_in_bytes(), T_INT));
aoqi@1:         __ null_check_for_branch(lir_cond_aboveEqual, left, right, null_check_info);
aoqi@1: 	__ branch(lir_cond_aboveEqual,left, right ,T_INT, stub); // forward branch
aoqi@1: #endif
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::nio_range_check(LIR_Opr buffer, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) {
aoqi@0:   CodeStub* stub = new RangeCheckStub(info, index, true);
aoqi@0:   if (index->is_constant()) {
aoqi@1: #ifndef MIPS64
aoqi@0:     cmp_mem_int(lir_cond_belowEqual, buffer, java_nio_Buffer::limit_offset(), index->as_jint(), info);
aoqi@0:     __ branch(lir_cond_belowEqual, T_INT, stub); // forward branch
aoqi@1: #else
aoqi@1:         LIR_Opr left = LIR_OprFact::address(new LIR_Address(buffer, java_nio_Buffer::limit_offset(),T_INT));
aoqi@1:         LIR_Opr right = LIR_OprFact::intConst(index->as_jint());
aoqi@1: 	__ null_check_for_branch(lir_cond_belowEqual, left, right, info);
aoqi@1:         __ branch(lir_cond_belowEqual,left, right ,T_INT, stub); // forward branch
aoqi@1: #endif
aoqi@0:   } else {
aoqi@1: #ifndef MIPS64
aoqi@0:     cmp_reg_mem(lir_cond_aboveEqual, index, buffer,
aoqi@0:                 java_nio_Buffer::limit_offset(), T_INT, info);
aoqi@0:     __ branch(lir_cond_aboveEqual, T_INT, stub); // forward branch
aoqi@1: #else
aoqi@1:         LIR_Opr left = index;
aoqi@1:         LIR_Opr right = LIR_OprFact::address(new LIR_Address( buffer, java_nio_Buffer::limit_offset(), T_INT));
aoqi@1: 	__ null_check_for_branch(lir_cond_aboveEqual, left, right, info);
aoqi@1:         __ branch(lir_cond_aboveEqual,left, right ,T_INT, stub); // forward branch
aoqi@1: #endif
aoqi@0:   }
aoqi@0:   __ move(index, result);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: 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) {
aoqi@0:   LIR_Opr result_op = result;
aoqi@0:   LIR_Opr left_op   = left;
aoqi@0:   LIR_Opr right_op  = right;
aoqi@0: 
aoqi@0:   if (TwoOperandLIRForm && left_op != result_op) {
aoqi@0:     assert(right_op != result_op, "malformed");
aoqi@0:     __ move(left_op, result_op);
aoqi@0:     left_op = result_op;
aoqi@0:   }
aoqi@0: 
aoqi@0:   switch(code) {
aoqi@0:     case Bytecodes::_dadd:
aoqi@0:     case Bytecodes::_fadd:
aoqi@0:     case Bytecodes::_ladd:
aoqi@0:     case Bytecodes::_iadd:  __ add(left_op, right_op, result_op); break;
aoqi@0:     case Bytecodes::_fmul:
aoqi@0:     case Bytecodes::_lmul:  __ mul(left_op, right_op, result_op); break;
aoqi@0: 
aoqi@0:     case Bytecodes::_dmul:
aoqi@0:       {
aoqi@0:         if (is_strictfp) {
aoqi@0:           __ mul_strictfp(left_op, right_op, result_op, tmp_op); break;
aoqi@0:         } else {
aoqi@0:           __ mul(left_op, right_op, result_op); break;
aoqi@0:         }
aoqi@0:       }
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case Bytecodes::_imul:
aoqi@0:       {
aoqi@0:         bool    did_strength_reduce = false;
aoqi@0: 
aoqi@0:         if (right->is_constant()) {
aoqi@0:           int c = right->as_jint();
aoqi@0:           if (is_power_of_2(c)) {
aoqi@0:             // do not need tmp here
aoqi@0:             __ shift_left(left_op, exact_log2(c), result_op);
aoqi@0:             did_strength_reduce = true;
aoqi@0:           } else {
aoqi@0:             did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op);
aoqi@0:           }
aoqi@0:         }
aoqi@0:         // we couldn't strength reduce so just emit the multiply
aoqi@0:         if (!did_strength_reduce) {
aoqi@0:           __ mul(left_op, right_op, result_op);
aoqi@0:         }
aoqi@0:       }
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case Bytecodes::_dsub:
aoqi@0:     case Bytecodes::_fsub:
aoqi@0:     case Bytecodes::_lsub:
aoqi@0:     case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break;
aoqi@0: 
aoqi@0:     case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break;
aoqi@0:     // ldiv and lrem are implemented with a direct runtime call
aoqi@0: 
aoqi@0:     case Bytecodes::_ddiv:
aoqi@0:       {
aoqi@0:         if (is_strictfp) {
aoqi@0:           __ div_strictfp (left_op, right_op, result_op, tmp_op); break;
aoqi@0:         } else {
aoqi@0:           __ div (left_op, right_op, result_op); break;
aoqi@0:         }
aoqi@0:       }
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case Bytecodes::_drem:
aoqi@0:     case Bytecodes::_frem: __ rem (left_op, right_op, result_op); break;
aoqi@0: 
aoqi@0:     default: ShouldNotReachHere();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::arithmetic_op_int(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr tmp) {
aoqi@0:   arithmetic_op(code, result, left, right, false, tmp);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::arithmetic_op_long(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) {
aoqi@0:   arithmetic_op(code, result, left, right, false, LIR_OprFact::illegalOpr, info);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::arithmetic_op_fpu(Bytecodes::Code code, LIR_Opr result, LIR_Opr left, LIR_Opr right, bool is_strictfp, LIR_Opr tmp) {
aoqi@0:   arithmetic_op(code, result, left, right, is_strictfp, tmp);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::shift_op(Bytecodes::Code code, LIR_Opr result_op, LIR_Opr value, LIR_Opr count, LIR_Opr tmp) {
aoqi@0:   if (TwoOperandLIRForm && value != result_op) {
aoqi@0:     assert(count != result_op, "malformed");
aoqi@0:     __ move(value, result_op);
aoqi@0:     value = result_op;
aoqi@0:   }
aoqi@0: 
aoqi@0:   assert(count->is_constant() || count->is_register(), "must be");
aoqi@0:   switch(code) {
aoqi@0:   case Bytecodes::_ishl:
aoqi@0:   case Bytecodes::_lshl: __ shift_left(value, count, result_op, tmp); break;
aoqi@0:   case Bytecodes::_ishr:
aoqi@0:   case Bytecodes::_lshr: __ shift_right(value, count, result_op, tmp); break;
aoqi@0:   case Bytecodes::_iushr:
aoqi@0:   case Bytecodes::_lushr: __ unsigned_shift_right(value, count, result_op, tmp); break;
aoqi@0:   default: ShouldNotReachHere();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::logic_op (Bytecodes::Code code, LIR_Opr result_op, LIR_Opr left_op, LIR_Opr right_op) {
aoqi@0:   if (TwoOperandLIRForm && left_op != result_op) {
aoqi@0:     assert(right_op != result_op, "malformed");
aoqi@0:     __ move(left_op, result_op);
aoqi@0:     left_op = result_op;
aoqi@0:   }
aoqi@0: 
aoqi@0:   switch(code) {
aoqi@0:     case Bytecodes::_iand:
aoqi@0:     case Bytecodes::_land:  __ logical_and(left_op, right_op, result_op); break;
aoqi@0: 
aoqi@0:     case Bytecodes::_ior:
aoqi@0:     case Bytecodes::_lor:   __ logical_or(left_op, right_op, result_op);  break;
aoqi@0: 
aoqi@0:     case Bytecodes::_ixor:
aoqi@0:     case Bytecodes::_lxor:  __ logical_xor(left_op, right_op, result_op); break;
aoqi@0: 
aoqi@0:     default: ShouldNotReachHere();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 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) {
aoqi@0:   if (!GenerateSynchronizationCode) return;
aoqi@0:   // for slow path, use debug info for state after successful locking
aoqi@0:   CodeStub* slow_path = new MonitorEnterStub(object, lock, info);
aoqi@0:   __ load_stack_address_monitor(monitor_no, lock);
aoqi@0:   // for handling NullPointerException, use debug info representing just the lock stack before this monitorenter
aoqi@0:   __ lock_object(hdr, object, lock, scratch, slow_path, info_for_exception);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::monitor_exit(LIR_Opr object, LIR_Opr lock, LIR_Opr new_hdr, LIR_Opr scratch, int monitor_no) {
aoqi@0:   if (!GenerateSynchronizationCode) return;
aoqi@0:   // setup registers
aoqi@0:   LIR_Opr hdr = lock;
aoqi@0:   lock = new_hdr;
aoqi@0:   CodeStub* slow_path = new MonitorExitStub(lock, UseFastLocking, monitor_no);
aoqi@0:   __ load_stack_address_monitor(monitor_no, lock);
aoqi@0:   __ unlock_object(hdr, object, lock, scratch, slow_path);
aoqi@0: }
aoqi@0: 
rbackman@7058: #ifndef PRODUCT
rbackman@7058: void LIRGenerator::print_if_not_loaded(const NewInstance* new_instance) {
rbackman@7058:   if (PrintNotLoaded && !new_instance->klass()->is_loaded()) {
rbackman@7058:     tty->print_cr("   ###class not loaded at new bci %d", new_instance->printable_bci());
rbackman@7058:   } else if (PrintNotLoaded && (TieredCompilation && new_instance->is_unresolved())) {
rbackman@7058:     tty->print_cr("   ###class not resolved at new bci %d", new_instance->printable_bci());
rbackman@7058:   }
rbackman@7058: }
rbackman@7058: #endif
rbackman@7058: 
aoqi@1: #ifndef MIPS64
rbackman@7058: void LIRGenerator::new_instance(LIR_Opr dst, ciInstanceKlass* klass, bool is_unresolved, LIR_Opr scratch1, LIR_Opr scratch2, LIR_Opr scratch3, LIR_Opr scratch4, LIR_Opr klass_reg, CodeEmitInfo* info) {
aoqi@1: #else
aoqi@7535: void LIRGenerator::new_instance(LIR_Opr dst, ciInstanceKlass* klass, bool is_unresolved, LIR_Opr scratch1, LIR_Opr scratch2, LIR_Opr scratch3,
aoqi@1:                                 LIR_Opr scratch4, LIR_Opr scratch5, LIR_Opr scratch6,LIR_Opr klass_reg, CodeEmitInfo* info) {
aoqi@1: #endif
rbackman@7058:   klass2reg_with_patching(klass_reg, klass, info, is_unresolved);
aoqi@0:   // If klass is not loaded we do not know if the klass has finalizers:
aoqi@0:   if (UseFastNewInstance && klass->is_loaded()
aoqi@0:       && !Klass::layout_helper_needs_slow_path(klass->layout_helper())) {
aoqi@0: 
aoqi@0:     Runtime1::StubID stub_id = klass->is_initialized() ? Runtime1::fast_new_instance_id : Runtime1::fast_new_instance_init_check_id;
aoqi@0: 
aoqi@0:     CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, stub_id);
aoqi@0: 
aoqi@0:     assert(klass->is_loaded(), "must be loaded");
aoqi@0:     // allocate space for instance
aoqi@0:     assert(klass->size_helper() >= 0, "illegal instance size");
aoqi@0:     const int instance_size = align_object_size(klass->size_helper());
aoqi@1: #ifndef MIPS64
aoqi@0:     __ allocate_object(dst, scratch1, scratch2, scratch3, scratch4,
aoqi@0:                        oopDesc::header_size(), instance_size, klass_reg, !klass->is_initialized(), slow_path);
aoqi@1: #else
aoqi@1:     __ allocate_object(dst, scratch1, scratch2, scratch3, scratch4, scratch5, scratch6,
aoqi@1:                         oopDesc::header_size(), instance_size, klass_reg, !klass->is_initialized(), slow_path);
aoqi@1: 
aoqi@1: #endif
aoqi@0:   } else {
aoqi@0:     CodeStub* slow_path = new NewInstanceStub(klass_reg, dst, klass, info, Runtime1::new_instance_id);
aoqi@1: #ifndef MIPS64
aoqi@0:     __ branch(lir_cond_always, T_ILLEGAL, slow_path);
aoqi@0:     __ branch_destination(slow_path->continuation());
aoqi@1: #else
aoqi@1:     __ branch(lir_cond_always, LIR_OprFact::illegalOpr,  LIR_OprFact::illegalOpr, T_ILLEGAL, slow_path);
aoqi@1:     __ branch_destination(slow_path->continuation());
aoqi@1: #endif
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: static bool is_constant_zero(Instruction* inst) {
aoqi@0:   IntConstant* c = inst->type()->as_IntConstant();
aoqi@0:   if (c) {
aoqi@0:     return (c->value() == 0);
aoqi@0:   }
aoqi@0:   return false;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: static bool positive_constant(Instruction* inst) {
aoqi@0:   IntConstant* c = inst->type()->as_IntConstant();
aoqi@0:   if (c) {
aoqi@0:     return (c->value() >= 0);
aoqi@0:   }
aoqi@0:   return false;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: static ciArrayKlass* as_array_klass(ciType* type) {
aoqi@0:   if (type != NULL && type->is_array_klass() && type->is_loaded()) {
aoqi@0:     return (ciArrayKlass*)type;
aoqi@0:   } else {
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: static ciType* phi_declared_type(Phi* phi) {
aoqi@0:   ciType* t = phi->operand_at(0)->declared_type();
aoqi@0:   if (t == NULL) {
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0:   for(int i = 1; i < phi->operand_count(); i++) {
aoqi@0:     if (t != phi->operand_at(i)->declared_type()) {
aoqi@0:       return NULL;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return t;
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::arraycopy_helper(Intrinsic* x, int* flagsp, ciArrayKlass** expected_typep) {
aoqi@0:   Instruction* src     = x->argument_at(0);
aoqi@0:   Instruction* src_pos = x->argument_at(1);
aoqi@0:   Instruction* dst     = x->argument_at(2);
aoqi@0:   Instruction* dst_pos = x->argument_at(3);
aoqi@0:   Instruction* length  = x->argument_at(4);
aoqi@0: 
aoqi@0:   // first try to identify the likely type of the arrays involved
aoqi@0:   ciArrayKlass* expected_type = NULL;
aoqi@0:   bool is_exact = false, src_objarray = false, dst_objarray = false;
aoqi@0:   {
aoqi@0:     ciArrayKlass* src_exact_type    = as_array_klass(src->exact_type());
aoqi@0:     ciArrayKlass* src_declared_type = as_array_klass(src->declared_type());
aoqi@0:     Phi* phi;
aoqi@0:     if (src_declared_type == NULL && (phi = src->as_Phi()) != NULL) {
aoqi@0:       src_declared_type = as_array_klass(phi_declared_type(phi));
aoqi@0:     }
aoqi@0:     ciArrayKlass* dst_exact_type    = as_array_klass(dst->exact_type());
aoqi@0:     ciArrayKlass* dst_declared_type = as_array_klass(dst->declared_type());
aoqi@0:     if (dst_declared_type == NULL && (phi = dst->as_Phi()) != NULL) {
aoqi@0:       dst_declared_type = as_array_klass(phi_declared_type(phi));
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (src_exact_type != NULL && src_exact_type == dst_exact_type) {
aoqi@0:       // the types exactly match so the type is fully known
aoqi@0:       is_exact = true;
aoqi@0:       expected_type = src_exact_type;
aoqi@0:     } else if (dst_exact_type != NULL && dst_exact_type->is_obj_array_klass()) {
aoqi@0:       ciArrayKlass* dst_type = (ciArrayKlass*) dst_exact_type;
aoqi@0:       ciArrayKlass* src_type = NULL;
aoqi@0:       if (src_exact_type != NULL && src_exact_type->is_obj_array_klass()) {
aoqi@0:         src_type = (ciArrayKlass*) src_exact_type;
aoqi@0:       } else if (src_declared_type != NULL && src_declared_type->is_obj_array_klass()) {
aoqi@0:         src_type = (ciArrayKlass*) src_declared_type;
aoqi@0:       }
aoqi@0:       if (src_type != NULL) {
aoqi@0:         if (src_type->element_type()->is_subtype_of(dst_type->element_type())) {
aoqi@0:           is_exact = true;
aoqi@0:           expected_type = dst_type;
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:     // at least pass along a good guess
aoqi@0:     if (expected_type == NULL) expected_type = dst_exact_type;
aoqi@0:     if (expected_type == NULL) expected_type = src_declared_type;
aoqi@0:     if (expected_type == NULL) expected_type = dst_declared_type;
aoqi@0: 
aoqi@0:     src_objarray = (src_exact_type && src_exact_type->is_obj_array_klass()) || (src_declared_type && src_declared_type->is_obj_array_klass());
aoqi@0:     dst_objarray = (dst_exact_type && dst_exact_type->is_obj_array_klass()) || (dst_declared_type && dst_declared_type->is_obj_array_klass());
aoqi@0:   }
aoqi@0: 
aoqi@0:   // if a probable array type has been identified, figure out if any
aoqi@0:   // of the required checks for a fast case can be elided.
aoqi@0:   int flags = LIR_OpArrayCopy::all_flags;
aoqi@0: 
aoqi@0:   if (!src_objarray)
aoqi@0:     flags &= ~LIR_OpArrayCopy::src_objarray;
aoqi@0:   if (!dst_objarray)
aoqi@0:     flags &= ~LIR_OpArrayCopy::dst_objarray;
aoqi@0: 
aoqi@0:   if (!x->arg_needs_null_check(0))
aoqi@0:     flags &= ~LIR_OpArrayCopy::src_null_check;
aoqi@0:   if (!x->arg_needs_null_check(2))
aoqi@0:     flags &= ~LIR_OpArrayCopy::dst_null_check;
aoqi@0: 
aoqi@0: 
aoqi@0:   if (expected_type != NULL) {
aoqi@0:     Value length_limit = NULL;
aoqi@0: 
aoqi@0:     IfOp* ifop = length->as_IfOp();
aoqi@0:     if (ifop != NULL) {
aoqi@0:       // look for expressions like min(v, a.length) which ends up as
aoqi@0:       //   x > y ? y : x  or  x >= y ? y : x
aoqi@0:       if ((ifop->cond() == If::gtr || ifop->cond() == If::geq) &&
aoqi@0:           ifop->x() == ifop->fval() &&
aoqi@0:           ifop->y() == ifop->tval()) {
aoqi@0:         length_limit = ifop->y();
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // try to skip null checks and range checks
aoqi@0:     NewArray* src_array = src->as_NewArray();
aoqi@0:     if (src_array != NULL) {
aoqi@0:       flags &= ~LIR_OpArrayCopy::src_null_check;
aoqi@0:       if (length_limit != NULL &&
aoqi@0:           src_array->length() == length_limit &&
aoqi@0:           is_constant_zero(src_pos)) {
aoqi@0:         flags &= ~LIR_OpArrayCopy::src_range_check;
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     NewArray* dst_array = dst->as_NewArray();
aoqi@0:     if (dst_array != NULL) {
aoqi@0:       flags &= ~LIR_OpArrayCopy::dst_null_check;
aoqi@0:       if (length_limit != NULL &&
aoqi@0:           dst_array->length() == length_limit &&
aoqi@0:           is_constant_zero(dst_pos)) {
aoqi@0:         flags &= ~LIR_OpArrayCopy::dst_range_check;
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // check from incoming constant values
aoqi@0:     if (positive_constant(src_pos))
aoqi@0:       flags &= ~LIR_OpArrayCopy::src_pos_positive_check;
aoqi@0:     if (positive_constant(dst_pos))
aoqi@0:       flags &= ~LIR_OpArrayCopy::dst_pos_positive_check;
aoqi@0:     if (positive_constant(length))
aoqi@0:       flags &= ~LIR_OpArrayCopy::length_positive_check;
aoqi@0: 
aoqi@0:     // see if the range check can be elided, which might also imply
aoqi@0:     // that src or dst is non-null.
aoqi@0:     ArrayLength* al = length->as_ArrayLength();
aoqi@0:     if (al != NULL) {
aoqi@0:       if (al->array() == src) {
aoqi@0:         // it's the length of the source array
aoqi@0:         flags &= ~LIR_OpArrayCopy::length_positive_check;
aoqi@0:         flags &= ~LIR_OpArrayCopy::src_null_check;
aoqi@0:         if (is_constant_zero(src_pos))
aoqi@0:           flags &= ~LIR_OpArrayCopy::src_range_check;
aoqi@0:       }
aoqi@0:       if (al->array() == dst) {
aoqi@0:         // it's the length of the destination array
aoqi@0:         flags &= ~LIR_OpArrayCopy::length_positive_check;
aoqi@0:         flags &= ~LIR_OpArrayCopy::dst_null_check;
aoqi@0:         if (is_constant_zero(dst_pos))
aoqi@0:           flags &= ~LIR_OpArrayCopy::dst_range_check;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     if (is_exact) {
aoqi@0:       flags &= ~LIR_OpArrayCopy::type_check;
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   IntConstant* src_int = src_pos->type()->as_IntConstant();
aoqi@0:   IntConstant* dst_int = dst_pos->type()->as_IntConstant();
aoqi@0:   if (src_int && dst_int) {
aoqi@0:     int s_offs = src_int->value();
aoqi@0:     int d_offs = dst_int->value();
aoqi@0:     if (src_int->value() >= dst_int->value()) {
aoqi@0:       flags &= ~LIR_OpArrayCopy::overlapping;
aoqi@0:     }
aoqi@0:     if (expected_type != NULL) {
aoqi@0:       BasicType t = expected_type->element_type()->basic_type();
aoqi@0:       int element_size = type2aelembytes(t);
aoqi@0:       if (((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) &&
aoqi@0:           ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0)) {
aoqi@0:         flags &= ~LIR_OpArrayCopy::unaligned;
aoqi@0:       }
aoqi@0:     }
aoqi@0:   } else if (src_pos == dst_pos || is_constant_zero(dst_pos)) {
aoqi@0:     // src and dest positions are the same, or dst is zero so assume
aoqi@0:     // nonoverlapping copy.
aoqi@0:     flags &= ~LIR_OpArrayCopy::overlapping;
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (src == dst) {
aoqi@0:     // moving within a single array so no type checks are needed
aoqi@0:     if (flags & LIR_OpArrayCopy::type_check) {
aoqi@0:       flags &= ~LIR_OpArrayCopy::type_check;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   *flagsp = flags;
aoqi@0:   *expected_typep = (ciArrayKlass*)expected_type;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::round_item(LIR_Opr opr) {
aoqi@0:   assert(opr->is_register(), "why spill if item is not register?");
aoqi@0: 
aoqi@0:   if (RoundFPResults && UseSSE < 1 && opr->is_single_fpu()) {
aoqi@0:     LIR_Opr result = new_register(T_FLOAT);
aoqi@0:     set_vreg_flag(result, must_start_in_memory);
aoqi@0:     assert(opr->is_register(), "only a register can be spilled");
aoqi@0:     assert(opr->value_type()->is_float(), "rounding only for floats available");
aoqi@0:     __ roundfp(opr, LIR_OprFact::illegalOpr, result);
aoqi@0:     return result;
aoqi@0:   }
aoqi@0:   return opr;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::force_to_spill(LIR_Opr value, BasicType t) {
aoqi@0:   assert(type2size[t] == type2size[value->type()],
aoqi@0:          err_msg_res("size mismatch: t=%s, value->type()=%s", type2name(t), type2name(value->type())));
aoqi@0:   if (!value->is_register()) {
aoqi@0:     // force into a register
aoqi@0:     LIR_Opr r = new_register(value->type());
aoqi@0:     __ move(value, r);
aoqi@0:     value = r;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // create a spill location
aoqi@0:   LIR_Opr tmp = new_register(t);
aoqi@0:   set_vreg_flag(tmp, LIRGenerator::must_start_in_memory);
aoqi@0: 
aoqi@0:   // move from register to spill
aoqi@0:   __ move(value, tmp);
aoqi@0:   return tmp;
aoqi@0: }
roland@6668: 
aoqi@1: #ifndef MIPS64
aoqi@0: void LIRGenerator::profile_branch(If* if_instr, If::Condition cond) {
aoqi@0:   if (if_instr->should_profile()) {
aoqi@0:     ciMethod* method = if_instr->profiled_method();
aoqi@0:     assert(method != NULL, "method should be set if branch is profiled");
aoqi@0:     ciMethodData* md = method->method_data_or_null();
aoqi@0:     assert(md != NULL, "Sanity");
aoqi@0:     ciProfileData* data = md->bci_to_data(if_instr->profiled_bci());
aoqi@0:     assert(data != NULL, "must have profiling data");
aoqi@0:     assert(data->is_BranchData(), "need BranchData for two-way branches");
aoqi@0:     int taken_count_offset     = md->byte_offset_of_slot(data, BranchData::taken_offset());
aoqi@0:     int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset());
aoqi@0:     if (if_instr->is_swapped()) {
aoqi@0:       int t = taken_count_offset;
aoqi@0:       taken_count_offset = not_taken_count_offset;
aoqi@0:       not_taken_count_offset = t;
aoqi@0:     }
aoqi@0: 
aoqi@0:     LIR_Opr md_reg = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(md->constant_encoding(), md_reg);
aoqi@0: 
aoqi@0:     LIR_Opr data_offset_reg = new_pointer_register();
aoqi@0:     __ cmove(lir_cond(cond),
aoqi@0:              LIR_OprFact::intptrConst(taken_count_offset),
aoqi@0:              LIR_OprFact::intptrConst(not_taken_count_offset),
aoqi@0:              data_offset_reg, as_BasicType(if_instr->x()->type()));
aoqi@0: 
aoqi@0:     // MDO cells are intptr_t, so the data_reg width is arch-dependent.
aoqi@0:     LIR_Opr data_reg = new_pointer_register();
aoqi@0:     LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, data_reg->type());
aoqi@0:     __ move(data_addr, data_reg);
aoqi@0:     // Use leal instead of add to avoid destroying condition codes on x86
aoqi@0:     LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT);
aoqi@0:     __ leal(LIR_OprFact::address(fake_incr_value), data_reg);
aoqi@0:     __ move(data_reg, data_addr);
aoqi@0:   }
aoqi@0: }
aoqi@1: #else
aoqi@1: void LIRGenerator::profile_branch(If* if_instr, If::Condition cond , LIR_Opr left, LIR_Opr right) {
aoqi@1:         if (if_instr->should_profile()) {
aoqi@1:                 ciMethod* method = if_instr->profiled_method();
aoqi@1:                 assert(method != NULL, "method should be set if branch is profiled");
aoqi@1:                 ciMethodData* md = method->method_data_or_null();
aoqi@1:                 if (md == NULL) {
aoqi@1:                         bailout("out of memory building methodDataOop");
aoqi@1:                         return;
aoqi@1:                 }
aoqi@1:                 ciProfileData* data = md->bci_to_data(if_instr->profiled_bci());
aoqi@1:                 assert(data != NULL, "must have profiling data");
aoqi@1:                 assert(data->is_BranchData(), "need BranchData for two-way branches");
aoqi@1:                 int taken_count_offset     = md->byte_offset_of_slot(data, BranchData::taken_offset());
aoqi@1:                 int not_taken_count_offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset());
aoqi@1:                 if (if_instr->is_swapped()) {
aoqi@1:                  int t = taken_count_offset;
aoqi@1:                  taken_count_offset = not_taken_count_offset;
aoqi@1:                  not_taken_count_offset = t; 
aoqi@1:                 }
aoqi@1:                 LIR_Opr md_reg = new_register(T_METADATA);
aoqi@1:                 __ metadata2reg(md->constant_encoding(), md_reg);
aoqi@1:                 //__ move(LIR_OprFact::oopConst(md->constant_encoding()), md_reg);
aoqi@1:                 LIR_Opr data_offset_reg = new_pointer_register();
aoqi@1: 
aoqi@1:                 LIR_Opr opr1 =  LIR_OprFact::intConst(taken_count_offset);
aoqi@1:                 LIR_Opr opr2 =  LIR_OprFact::intConst(not_taken_count_offset);
aoqi@1:                 LabelObj* skip = new LabelObj();
aoqi@1: 
aoqi@1:                 __ move(opr1, data_offset_reg);
aoqi@1:                 __ branch( lir_cond(cond), left, right, skip->label());
aoqi@1:                 __ move(opr2, data_offset_reg);
aoqi@1:                 __ branch_destination(skip->label());
aoqi@1: 
aoqi@1:                 LIR_Opr data_reg = new_pointer_register();
aoqi@1:                 LIR_Opr tmp_reg = new_pointer_register();
aoqi@1:                 // LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, T_INT);
aoqi@1:                                 __ move(data_offset_reg, tmp_reg);
aoqi@1:                 __ add(tmp_reg, md_reg, tmp_reg);
aoqi@1:                 LIR_Address* data_addr = new LIR_Address(tmp_reg, 0, T_INT);
aoqi@1:                 __ move(LIR_OprFact::address(data_addr), data_reg);
aoqi@1:                 LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT);
aoqi@1:                 // Use leal instead of add to avoid destroying condition codes on x86
aoqi@1:                                 __ leal(LIR_OprFact::address(fake_incr_value), data_reg);
aoqi@1:                 __ move(data_reg, LIR_OprFact::address(data_addr));
aoqi@1:         }
aoqi@1: }
aoqi@1: 
aoqi@1: #endif
aoqi@0: 
aoqi@0: // Phi technique:
aoqi@0: // This is about passing live values from one basic block to the other.
aoqi@0: // In code generated with Java it is rather rare that more than one
aoqi@0: // value is on the stack from one basic block to the other.
aoqi@0: // We optimize our technique for efficient passing of one value
aoqi@0: // (of type long, int, double..) but it can be extended.
aoqi@0: // When entering or leaving a basic block, all registers and all spill
aoqi@0: // slots are release and empty. We use the released registers
aoqi@0: // and spill slots to pass the live values from one block
aoqi@0: // to the other. The topmost value, i.e., the value on TOS of expression
aoqi@0: // stack is passed in registers. All other values are stored in spilling
aoqi@0: // area. Every Phi has an index which designates its spill slot
aoqi@0: // At exit of a basic block, we fill the register(s) and spill slots.
aoqi@0: // At entry of a basic block, the block_prolog sets up the content of phi nodes
aoqi@0: // and locks necessary registers and spilling slots.
aoqi@0: 
aoqi@0: 
aoqi@0: // move current value to referenced phi function
aoqi@0: void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_val) {
aoqi@0:   Phi* phi = sux_val->as_Phi();
aoqi@0:   // cur_val can be null without phi being null in conjunction with inlining
aoqi@0:   if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) {
aoqi@0:     LIR_Opr operand = cur_val->operand();
aoqi@0:     if (cur_val->operand()->is_illegal()) {
aoqi@0:       assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL,
aoqi@0:              "these can be produced lazily");
aoqi@0:       operand = operand_for_instruction(cur_val);
aoqi@0:     }
aoqi@0:     resolver->move(operand, operand_for_instruction(phi));
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Moves all stack values into their PHI position
aoqi@0: void LIRGenerator::move_to_phi(ValueStack* cur_state) {
aoqi@0:   BlockBegin* bb = block();
aoqi@0:   if (bb->number_of_sux() == 1) {
aoqi@0:     BlockBegin* sux = bb->sux_at(0);
aoqi@0:     assert(sux->number_of_preds() > 0, "invalid CFG");
aoqi@0: 
aoqi@0:     // a block with only one predecessor never has phi functions
aoqi@0:     if (sux->number_of_preds() > 1) {
aoqi@0:       int max_phis = cur_state->stack_size() + cur_state->locals_size();
aoqi@0:       PhiResolver resolver(this, _virtual_register_number + max_phis * 2);
aoqi@0: 
aoqi@0:       ValueStack* sux_state = sux->state();
aoqi@0:       Value sux_value;
aoqi@0:       int index;
aoqi@0: 
aoqi@0:       assert(cur_state->scope() == sux_state->scope(), "not matching");
aoqi@0:       assert(cur_state->locals_size() == sux_state->locals_size(), "not matching");
aoqi@0:       assert(cur_state->stack_size() == sux_state->stack_size(), "not matching");
aoqi@0: 
aoqi@0:       for_each_stack_value(sux_state, index, sux_value) {
aoqi@0:         move_to_phi(&resolver, cur_state->stack_at(index), sux_value);
aoqi@0:       }
aoqi@0: 
aoqi@0:       for_each_local_value(sux_state, index, sux_value) {
aoqi@0:         move_to_phi(&resolver, cur_state->local_at(index), sux_value);
aoqi@0:       }
aoqi@0: 
aoqi@0:       assert(cur_state->caller_state() == sux_state->caller_state(), "caller states must be equal");
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::new_register(BasicType type) {
aoqi@0:   int vreg = _virtual_register_number;
aoqi@0:   // add a little fudge factor for the bailout, since the bailout is
aoqi@0:   // only checked periodically.  This gives a few extra registers to
aoqi@0:   // hand out before we really run out, which helps us keep from
aoqi@0:   // tripping over assertions.
aoqi@0:   if (vreg + 20 >= LIR_OprDesc::vreg_max) {
aoqi@0:     bailout("out of virtual registers");
aoqi@0:     if (vreg + 2 >= LIR_OprDesc::vreg_max) {
aoqi@0:       // wrap it around
aoqi@0:       _virtual_register_number = LIR_OprDesc::vreg_base;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   _virtual_register_number += 1;
aoqi@0:   return LIR_OprFact::virtual_register(vreg, type);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Try to lock using register in hint
aoqi@0: LIR_Opr LIRGenerator::rlock(Value instr) {
aoqi@0:   return new_register(instr->type());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // does an rlock and sets result
aoqi@0: LIR_Opr LIRGenerator::rlock_result(Value x) {
aoqi@0:   LIR_Opr reg = rlock(x);
aoqi@0:   set_result(x, reg);
aoqi@0:   return reg;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // does an rlock and sets result
aoqi@0: LIR_Opr LIRGenerator::rlock_result(Value x, BasicType type) {
aoqi@0:   LIR_Opr reg;
aoqi@0:   switch (type) {
aoqi@0:   case T_BYTE:
aoqi@0:   case T_BOOLEAN:
aoqi@0:     reg = rlock_byte(type);
aoqi@0:     break;
aoqi@0:   default:
aoqi@0:     reg = rlock(x);
aoqi@0:     break;
aoqi@0:   }
aoqi@0: 
aoqi@0:   set_result(x, reg);
aoqi@0:   return reg;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //---------------------------------------------------------------------
aoqi@0: ciObject* LIRGenerator::get_jobject_constant(Value value) {
aoqi@0:   ObjectType* oc = value->type()->as_ObjectType();
aoqi@0:   if (oc) {
aoqi@0:     return oc->constant_value();
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@1: #ifdef MIPS64
aoqi@1: void LIRGenerator::write_barrier(LIR_Opr addr) {
aoqi@1:         if (addr->is_address()) {
aoqi@1:         LIR_Address* address = (LIR_Address*)addr;
aoqi@1:         LIR_Opr ptr = new_register(T_OBJECT);
aoqi@1:         if (!address->index()->is_valid() && address->disp() == 0) {
aoqi@1:                 __ move(address->base(), ptr);
aoqi@1:         } else {
aoqi@1:                 __ leal(addr, ptr);
aoqi@1:         }
aoqi@1:                 addr = ptr;
aoqi@1:         }
aoqi@1:         assert(addr->is_register(), "must be a register at this point");
aoqi@1: 
aoqi@1:         LIR_Opr tmp = new_pointer_register();
aoqi@1:         if (TwoOperandLIRForm) {
aoqi@1:                 __ move(addr, tmp);
aoqi@1:                 __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp);
aoqi@1:         } else {
aoqi@1:                 __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp);
aoqi@1:         }
aoqi@1:         if (can_inline_as_constant(card_table_base())) {
aoqi@1:                 __ move(LIR_OprFact::intConst(0), new LIR_Address(tmp, card_table_base()->as_jint(), T_BYTE));
aoqi@1:         } else {
aoqi@1:                 __ add(tmp, load_constant(card_table_base()), tmp);
aoqi@1:                 __ move(LIR_OprFact::intConst(0), new LIR_Address(tmp, 0, T_BYTE));
aoqi@1:         }
aoqi@1: }
aoqi@1: #endif
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_ExceptionObject(ExceptionObject* x) {
aoqi@0:   assert(block()->is_set(BlockBegin::exception_entry_flag), "ExceptionObject only allowed in exception handler block");
aoqi@0:   assert(block()->next() == x, "ExceptionObject must be first instruction of block");
aoqi@0: 
aoqi@0:   // no moves are created for phi functions at the begin of exception
aoqi@0:   // handlers, so assign operands manually here
aoqi@0:   for_each_phi_fun(block(), phi,
aoqi@0:                    operand_for_instruction(phi));
aoqi@0: 
aoqi@0:   LIR_Opr thread_reg = getThreadPointer();
aoqi@0:   __ move_wide(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT),
aoqi@0:                exceptionOopOpr());
aoqi@0:   __ move_wide(LIR_OprFact::oopConst(NULL),
aoqi@0:                new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT));
aoqi@0:   __ move_wide(LIR_OprFact::oopConst(NULL),
aoqi@0:                new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT));
aoqi@0: 
aoqi@0:   LIR_Opr result = new_register(T_OBJECT);
aoqi@0:   __ move(exceptionOopOpr(), result);
aoqi@0:   set_result(x, result);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //                        visitor functions
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: //----------------------------------------------------------------------
aoqi@0: 
aoqi@0: void LIRGenerator::do_Phi(Phi* x) {
aoqi@0:   // phi functions are never visited directly
aoqi@0:   ShouldNotReachHere();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Code for a constant is generated lazily unless the constant is frequently used and can't be inlined.
aoqi@0: void LIRGenerator::do_Constant(Constant* x) {
aoqi@0:   if (x->state_before() != NULL) {
aoqi@0:     // Any constant with a ValueStack requires patching so emit the patch here
aoqi@0:     LIR_Opr reg = rlock_result(x);
aoqi@0:     CodeEmitInfo* info = state_for(x, x->state_before());
aoqi@0:     __ oop2reg_patch(NULL, reg, info);
aoqi@0:   } else if (x->use_count() > 1 && !can_inline_as_constant(x)) {
aoqi@0:     if (!x->is_pinned()) {
aoqi@0:       // unpinned constants are handled specially so that they can be
aoqi@0:       // put into registers when they are used multiple times within a
aoqi@0:       // block.  After the block completes their operand will be
aoqi@0:       // cleared so that other blocks can't refer to that register.
aoqi@0:       set_result(x, load_constant(x));
aoqi@0:     } else {
aoqi@0:       LIR_Opr res = x->operand();
aoqi@0:       if (!res->is_valid()) {
aoqi@0:         res = LIR_OprFact::value_type(x->type());
aoqi@0:       }
aoqi@0:       if (res->is_constant()) {
aoqi@0:         LIR_Opr reg = rlock_result(x);
aoqi@0:         __ move(res, reg);
aoqi@0:       } else {
aoqi@0:         set_result(x, res);
aoqi@0:       }
aoqi@0:     }
aoqi@0:   } else {
aoqi@0:     set_result(x, LIR_OprFact::value_type(x->type()));
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_Local(Local* x) {
aoqi@0:   // operand_for_instruction has the side effect of setting the result
aoqi@0:   // so there's no need to do it here.
aoqi@0:   operand_for_instruction(x);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_IfInstanceOf(IfInstanceOf* x) {
aoqi@0:   Unimplemented();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_Return(Return* x) {
aoqi@0:   if (compilation()->env()->dtrace_method_probes()) {
aoqi@0:     BasicTypeList signature;
aoqi@0:     signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT));    // thread
aoqi@0:     signature.append(T_METADATA); // Method*
aoqi@0:     LIR_OprList* args = new LIR_OprList();
aoqi@0:     args->append(getThreadPointer());
aoqi@0:     LIR_Opr meth = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(method()->constant_encoding(), meth);
aoqi@0:     args->append(meth);
aoqi@0:     call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->type()->is_void()) {
aoqi@0:     __ return_op(LIR_OprFact::illegalOpr);
aoqi@0:   } else {
aoqi@0:     LIR_Opr reg = result_register_for(x->type(), /*callee=*/true);
aoqi@0:     LIRItem result(x->result(), this);
aoqi@0: 
aoqi@0:     result.load_item_force(reg);
aoqi@0:     __ return_op(result.result());
aoqi@0:   }
aoqi@0:   set_no_result(x);
aoqi@0: }
aoqi@0: 
aoqi@0: // Examble: ref.get()
aoqi@0: // Combination of LoadField and g1 pre-write barrier
aoqi@0: void LIRGenerator::do_Reference_get(Intrinsic* x) {
aoqi@0: 
aoqi@0:   const int referent_offset = java_lang_ref_Reference::referent_offset;
aoqi@0:   guarantee(referent_offset > 0, "referent offset not initialized");
aoqi@0: 
aoqi@0:   assert(x->number_of_arguments() == 1, "wrong type");
aoqi@0: 
aoqi@0:   LIRItem reference(x->argument_at(0), this);
aoqi@0:   reference.load_item();
aoqi@0: 
aoqi@0:   // need to perform the null check on the reference objecy
aoqi@0:   CodeEmitInfo* info = NULL;
aoqi@0:   if (x->needs_null_check()) {
aoqi@0:     info = state_for(x);
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Address* referent_field_adr =
aoqi@0:     new LIR_Address(reference.result(), referent_offset, T_OBJECT);
aoqi@0: 
aoqi@0:   LIR_Opr result = rlock_result(x);
aoqi@0: 
aoqi@0:   __ load(referent_field_adr, result, info);
aoqi@0: 
aoqi@0:   // Register the value in the referent field with the pre-barrier
aoqi@0:   pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */,
aoqi@0:               result /* pre_val */,
aoqi@0:               false  /* do_load */,
aoqi@0:               false  /* patch */,
aoqi@0:               NULL   /* info */);
aoqi@0: }
aoqi@0: 
aoqi@0: // Example: clazz.isInstance(object)
aoqi@0: void LIRGenerator::do_isInstance(Intrinsic* x) {
aoqi@0:   assert(x->number_of_arguments() == 2, "wrong type");
aoqi@0: 
aoqi@0:   // TODO could try to substitute this node with an equivalent InstanceOf
aoqi@0:   // if clazz is known to be a constant Class. This will pick up newly found
aoqi@0:   // constants after HIR construction. I'll leave this to a future change.
aoqi@0: 
aoqi@0:   // as a first cut, make a simple leaf call to runtime to stay platform independent.
aoqi@0:   // could follow the aastore example in a future change.
aoqi@0: 
aoqi@0:   LIRItem clazz(x->argument_at(0), this);
aoqi@0:   LIRItem object(x->argument_at(1), this);
aoqi@0:   clazz.load_item();
aoqi@0:   object.load_item();
aoqi@0:   LIR_Opr result = rlock_result(x);
aoqi@0: 
aoqi@0:   // need to perform null check on clazz
aoqi@0:   if (x->needs_null_check()) {
aoqi@0:     CodeEmitInfo* info = state_for(x);
aoqi@0:     __ null_check(clazz.result(), info);
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Opr call_result = call_runtime(clazz.value(), object.value(),
aoqi@0:                                      CAST_FROM_FN_PTR(address, Runtime1::is_instance_of),
aoqi@0:                                      x->type(),
aoqi@0:                                      NULL); // NULL CodeEmitInfo results in a leaf call
aoqi@0:   __ move(call_result, result);
aoqi@0: }
aoqi@0: 
aoqi@0: // Example: object.getClass ()
aoqi@0: void LIRGenerator::do_getClass(Intrinsic* x) {
aoqi@0:   assert(x->number_of_arguments() == 1, "wrong type");
aoqi@0: 
aoqi@0:   LIRItem rcvr(x->argument_at(0), this);
aoqi@0:   rcvr.load_item();
aoqi@0:   LIR_Opr temp = new_register(T_METADATA);
aoqi@0:   LIR_Opr result = rlock_result(x);
aoqi@0: 
aoqi@0:   // need to perform the null check on the rcvr
aoqi@0:   CodeEmitInfo* info = NULL;
aoqi@0:   if (x->needs_null_check()) {
aoqi@0:     info = state_for(x);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // FIXME T_ADDRESS should actually be T_METADATA but it can't because the
aoqi@0:   // meaning of these two is mixed up (see JDK-8026837).
aoqi@0:   __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), temp, info);
aoqi@0:   __ move_wide(new LIR_Address(temp, in_bytes(Klass::java_mirror_offset()), T_OBJECT), result);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Example: Thread.currentThread()
aoqi@0: void LIRGenerator::do_currentThread(Intrinsic* x) {
aoqi@0:   assert(x->number_of_arguments() == 0, "wrong type");
aoqi@0:   LIR_Opr reg = rlock_result(x);
aoqi@0:   __ move_wide(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_RegisterFinalizer(Intrinsic* x) {
aoqi@0:   assert(x->number_of_arguments() == 1, "wrong type");
aoqi@0:   LIRItem receiver(x->argument_at(0), this);
aoqi@0: 
aoqi@0:   receiver.load_item();
aoqi@0:   BasicTypeList signature;
aoqi@0:   signature.append(T_OBJECT); // receiver
aoqi@0:   LIR_OprList* args = new LIR_OprList();
aoqi@0:   args->append(receiver.result());
aoqi@0:   CodeEmitInfo* info = state_for(x, x->state());
aoqi@0:   call_runtime(&signature, args,
aoqi@0:                CAST_FROM_FN_PTR(address, Runtime1::entry_for(Runtime1::register_finalizer_id)),
aoqi@0:                voidType, info);
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //------------------------local access--------------------------------------
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::operand_for_instruction(Instruction* x) {
aoqi@0:   if (x->operand()->is_illegal()) {
aoqi@0:     Constant* c = x->as_Constant();
aoqi@0:     if (c != NULL) {
aoqi@0:       x->set_operand(LIR_OprFact::value_type(c->type()));
aoqi@0:     } else {
aoqi@0:       assert(x->as_Phi() || x->as_Local() != NULL, "only for Phi and Local");
aoqi@0:       // allocate a virtual register for this local or phi
aoqi@0:       x->set_operand(rlock(x));
aoqi@0:       _instruction_for_operand.at_put_grow(x->operand()->vreg_number(), x, NULL);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return x->operand();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: Instruction* LIRGenerator::instruction_for_opr(LIR_Opr opr) {
aoqi@0:   if (opr->is_virtual()) {
aoqi@0:     return instruction_for_vreg(opr->vreg_number());
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: Instruction* LIRGenerator::instruction_for_vreg(int reg_num) {
aoqi@0:   if (reg_num < _instruction_for_operand.length()) {
aoqi@0:     return _instruction_for_operand.at(reg_num);
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::set_vreg_flag(int vreg_num, VregFlag f) {
aoqi@0:   if (_vreg_flags.size_in_bits() == 0) {
aoqi@0:     BitMap2D temp(100, num_vreg_flags);
aoqi@0:     temp.clear();
aoqi@0:     _vreg_flags = temp;
aoqi@0:   }
aoqi@0:   _vreg_flags.at_put_grow(vreg_num, f, true);
aoqi@0: }
aoqi@0: 
aoqi@0: bool LIRGenerator::is_vreg_flag_set(int vreg_num, VregFlag f) {
aoqi@0:   if (!_vreg_flags.is_valid_index(vreg_num, f)) {
aoqi@0:     return false;
aoqi@0:   }
aoqi@0:   return _vreg_flags.at(vreg_num, f);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Block local constant handling.  This code is useful for keeping
aoqi@0: // unpinned constants and constants which aren't exposed in the IR in
aoqi@0: // registers.  Unpinned Constant instructions have their operands
aoqi@0: // cleared when the block is finished so that other blocks can't end
aoqi@0: // up referring to their registers.
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::load_constant(Constant* x) {
aoqi@0:   assert(!x->is_pinned(), "only for unpinned constants");
aoqi@0:   _unpinned_constants.append(x);
aoqi@0:   return load_constant(LIR_OprFact::value_type(x->type())->as_constant_ptr());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::load_constant(LIR_Const* c) {
aoqi@0:   BasicType t = c->type();
aoqi@0:   for (int i = 0; i < _constants.length(); i++) {
aoqi@0:     LIR_Const* other = _constants.at(i);
aoqi@0:     if (t == other->type()) {
aoqi@0:       switch (t) {
aoqi@0:       case T_INT:
aoqi@0:       case T_FLOAT:
aoqi@0:         if (c->as_jint_bits() != other->as_jint_bits()) continue;
aoqi@0:         break;
aoqi@0:       case T_LONG:
aoqi@0:       case T_DOUBLE:
aoqi@0:         if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue;
aoqi@0:         if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue;
aoqi@0:         break;
aoqi@0:       case T_OBJECT:
aoqi@0:         if (c->as_jobject() != other->as_jobject()) continue;
aoqi@0:         break;
aoqi@0:       }
aoqi@0:       return _reg_for_constants.at(i);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Opr result = new_register(t);
aoqi@0:   __ move((LIR_Opr)c, result);
aoqi@0:   _constants.append(c);
aoqi@0:   _reg_for_constants.append(result);
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: // Various barriers
aoqi@0: 
aoqi@0: void LIRGenerator::pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val,
aoqi@0:                                bool do_load, bool patch, CodeEmitInfo* info) {
aoqi@0:   // Do the pre-write barrier, if any.
aoqi@0:   switch (_bs->kind()) {
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0:     case BarrierSet::G1SATBCT:
aoqi@0:     case BarrierSet::G1SATBCTLogging:
aoqi@0:       G1SATBCardTableModRef_pre_barrier(addr_opr, pre_val, do_load, patch, info);
aoqi@0:       break;
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0:     case BarrierSet::CardTableModRef:
aoqi@0:     case BarrierSet::CardTableExtension:
aoqi@0:       // No pre barriers
aoqi@0:       break;
aoqi@0:     case BarrierSet::ModRef:
aoqi@0:     case BarrierSet::Other:
aoqi@0:       // No pre barriers
aoqi@0:       break;
aoqi@0:     default      :
aoqi@0:       ShouldNotReachHere();
aoqi@0: 
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) {
aoqi@0:   switch (_bs->kind()) {
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0:     case BarrierSet::G1SATBCT:
aoqi@0:     case BarrierSet::G1SATBCTLogging:
aoqi@0:       G1SATBCardTableModRef_post_barrier(addr,  new_val);
aoqi@0:       break;
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0:     case BarrierSet::CardTableModRef:
aoqi@0:     case BarrierSet::CardTableExtension:
aoqi@0:       CardTableModRef_post_barrier(addr,  new_val);
aoqi@0:       break;
aoqi@0:     case BarrierSet::ModRef:
aoqi@0:     case BarrierSet::Other:
aoqi@0:       // No post barriers
aoqi@0:       break;
aoqi@0:     default      :
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0: }
aoqi@0: 
aoqi@0: ////////////////////////////////////////////////////////////////////////
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0: void LIRGenerator::G1SATBCardTableModRef_pre_barrier(LIR_Opr addr_opr, LIR_Opr pre_val,
aoqi@0:                                                      bool do_load, bool patch, CodeEmitInfo* info) {
aoqi@0:   // First we test whether marking is in progress.
aoqi@0:   BasicType flag_type;
aoqi@0:   if (in_bytes(PtrQueue::byte_width_of_active()) == 4) {
aoqi@0:     flag_type = T_INT;
aoqi@0:   } else {
aoqi@0:     guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1,
aoqi@0:               "Assumption");
aoqi@0:     flag_type = T_BYTE;
aoqi@0:   }
aoqi@0:   LIR_Opr thrd = getThreadPointer();
aoqi@0:   LIR_Address* mark_active_flag_addr =
aoqi@0:     new LIR_Address(thrd,
aoqi@0:                     in_bytes(JavaThread::satb_mark_queue_offset() +
aoqi@0:                              PtrQueue::byte_offset_of_active()),
aoqi@0:                     flag_type);
aoqi@0:   // Read the marking-in-progress flag.
aoqi@0:   LIR_Opr flag_val = new_register(T_INT);
aoqi@0:   __ load(mark_active_flag_addr, flag_val);
aoqi@7535:   //MIPS not support cmp.
aoqi@1: #ifndef MIPS64
aoqi@0:   __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0));
aoqi@1: #endif
aoqi@0: 
aoqi@0:   LIR_PatchCode pre_val_patch_code = lir_patch_none;
aoqi@0: 
aoqi@0:   CodeStub* slow;
aoqi@0: 
aoqi@0:   if (do_load) {
aoqi@0:     assert(pre_val == LIR_OprFact::illegalOpr, "sanity");
aoqi@0:     assert(addr_opr != LIR_OprFact::illegalOpr, "sanity");
aoqi@0: 
aoqi@0:     if (patch)
aoqi@0:       pre_val_patch_code = lir_patch_normal;
aoqi@0: 
aoqi@0:     pre_val = new_register(T_OBJECT);
aoqi@0: 
aoqi@0:     if (!addr_opr->is_address()) {
aoqi@0:       assert(addr_opr->is_register(), "must be");
aoqi@0:       addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, T_OBJECT));
aoqi@0:     }
aoqi@0:     slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code, info);
aoqi@0:   } else {
aoqi@0:     assert(addr_opr == LIR_OprFact::illegalOpr, "sanity");
aoqi@0:     assert(pre_val->is_register(), "must be");
aoqi@0:     assert(pre_val->type() == T_OBJECT, "must be an object");
aoqi@0:     assert(info == NULL, "sanity");
aoqi@0: 
aoqi@0:     slow = new G1PreBarrierStub(pre_val);
aoqi@0:   }
aoqi@0: 
aoqi@1: #ifndef MIPS64
aoqi@0:   __ branch(lir_cond_notEqual, T_INT, slow);
aoqi@1: #else
aoqi@1:   __ branch(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0), T_INT, slow);
aoqi@1: #endif
aoqi@0:   __ branch_destination(slow->continuation());
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::G1SATBCardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) {
aoqi@0:   // If the "new_val" is a constant NULL, no barrier is necessary.
aoqi@0:   if (new_val->is_constant() &&
aoqi@0:       new_val->as_constant_ptr()->as_jobject() == NULL) return;
aoqi@0: 
aoqi@0:   if (!new_val->is_register()) {
aoqi@0:     LIR_Opr new_val_reg = new_register(T_OBJECT);
aoqi@0:     if (new_val->is_constant()) {
aoqi@0:       __ move(new_val, new_val_reg);
aoqi@0:     } else {
aoqi@0:       __ leal(new_val, new_val_reg);
aoqi@0:     }
aoqi@0:     new_val = new_val_reg;
aoqi@0:   }
aoqi@0:   assert(new_val->is_register(), "must be a register at this point");
aoqi@0: 
aoqi@0:   if (addr->is_address()) {
aoqi@0:     LIR_Address* address = addr->as_address_ptr();
aoqi@0:     LIR_Opr ptr = new_pointer_register();
aoqi@0:     if (!address->index()->is_valid() && address->disp() == 0) {
aoqi@0:       __ move(address->base(), ptr);
aoqi@0:     } else {
aoqi@0:       assert(address->disp() != max_jint, "lea doesn't support patched addresses!");
aoqi@0:       __ leal(addr, ptr);
aoqi@0:     }
aoqi@0:     addr = ptr;
aoqi@0:   }
aoqi@0:   assert(addr->is_register(), "must be a register at this point");
aoqi@0: 
aoqi@0:   LIR_Opr xor_res = new_pointer_register();
aoqi@0:   LIR_Opr xor_shift_res = new_pointer_register();
aoqi@0:   if (TwoOperandLIRForm ) {
aoqi@0:     __ move(addr, xor_res);
aoqi@0:     __ logical_xor(xor_res, new_val, xor_res);
aoqi@0:     __ move(xor_res, xor_shift_res);
aoqi@0:     __ unsigned_shift_right(xor_shift_res,
aoqi@0:                             LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes),
aoqi@0:                             xor_shift_res,
aoqi@0:                             LIR_OprDesc::illegalOpr());
aoqi@0:   } else {
aoqi@0:     __ logical_xor(addr, new_val, xor_res);
aoqi@0:     __ unsigned_shift_right(xor_res,
aoqi@0:                             LIR_OprFact::intConst(HeapRegion::LogOfHRGrainBytes),
aoqi@0:                             xor_shift_res,
aoqi@0:                             LIR_OprDesc::illegalOpr());
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (!new_val->is_register()) {
aoqi@0:     LIR_Opr new_val_reg = new_register(T_OBJECT);
aoqi@0:     __ leal(new_val, new_val_reg);
aoqi@0:     new_val = new_val_reg;
aoqi@0:   }
aoqi@0:   assert(new_val->is_register(), "must be a register at this point");
aoqi@0: 
aoqi@1: #ifndef MIPS64
aoqi@0:   __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD));
aoqi@0: 
aoqi@1: #endif
aoqi@0:   CodeStub* slow = new G1PostBarrierStub(addr, new_val);
aoqi@1: #ifndef MIPS64
aoqi@0:   __ branch(lir_cond_notEqual, LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow);
aoqi@1: #else
aoqi@1:   __ branch(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst((intptr_t)NULL_WORD), LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow);
aoqi@1: #endif
aoqi@0:   __ branch_destination(slow->continuation());
aoqi@0: }
aoqi@0: 
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: ////////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0: void LIRGenerator::CardTableModRef_post_barrier(LIR_OprDesc* addr, LIR_OprDesc* new_val) {
aoqi@0: 
aoqi@0:   assert(sizeof(*((CardTableModRefBS*)_bs)->byte_map_base) == sizeof(jbyte), "adjust this code");
aoqi@0:   LIR_Const* card_table_base = new LIR_Const(((CardTableModRefBS*)_bs)->byte_map_base);
aoqi@0:   if (addr->is_address()) {
aoqi@0:     LIR_Address* address = addr->as_address_ptr();
aoqi@0:     // ptr cannot be an object because we use this barrier for array card marks
aoqi@0:     // and addr can point in the middle of an array.
aoqi@0:     LIR_Opr ptr = new_pointer_register();
aoqi@0:     if (!address->index()->is_valid() && address->disp() == 0) {
aoqi@0:       __ move(address->base(), ptr);
aoqi@0:     } else {
aoqi@0:       assert(address->disp() != max_jint, "lea doesn't support patched addresses!");
aoqi@0:       __ leal(addr, ptr);
aoqi@0:     }
aoqi@0:     addr = ptr;
aoqi@0:   }
aoqi@0:   assert(addr->is_register(), "must be a register at this point");
aoqi@0: 
dlong@7598: #ifdef CARDTABLEMODREF_POST_BARRIER_HELPER
dlong@7598:   CardTableModRef_post_barrier_helper(addr, card_table_base);
dlong@7598: #else
aoqi@0:   LIR_Opr tmp = new_pointer_register();
aoqi@0:   if (TwoOperandLIRForm) {
aoqi@0:     __ move(addr, tmp);
aoqi@0:     __ unsigned_shift_right(tmp, CardTableModRefBS::card_shift, tmp);
aoqi@0:   } else {
aoqi@0:     __ unsigned_shift_right(addr, CardTableModRefBS::card_shift, tmp);
aoqi@0:   }
aoqi@0:   if (can_inline_as_constant(card_table_base)) {
aoqi@0:     __ move(LIR_OprFact::intConst(0),
aoqi@0:               new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE));
aoqi@0:   } else {
aoqi@1: #ifndef MIPS64
aoqi@0:     __ move(LIR_OprFact::intConst(0),
aoqi@0:               new LIR_Address(tmp, load_constant(card_table_base),
aoqi@0:                               T_BYTE));
aoqi@1: #else
aoqi@1:     __ add(tmp, load_constant(card_table_base), tmp);
aoqi@1:     __ move(LIR_OprFact::intConst(0),
aoqi@1:               new LIR_Address(tmp, 0,
aoqi@1:                               T_BYTE));
aoqi@1: #endif
aoqi@0:   }
dlong@7598: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //------------------------field access--------------------------------------
aoqi@0: 
aoqi@0: // Comment copied form templateTable_i486.cpp
aoqi@0: // ----------------------------------------------------------------------------
aoqi@0: // Volatile variables demand their effects be made known to all CPU's in
aoqi@0: // order.  Store buffers on most chips allow reads & writes to reorder; the
aoqi@0: // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
aoqi@0: // memory barrier (i.e., it's not sufficient that the interpreter does not
aoqi@0: // reorder volatile references, the hardware also must not reorder them).
aoqi@0: //
aoqi@0: // According to the new Java Memory Model (JMM):
aoqi@0: // (1) All volatiles are serialized wrt to each other.
aoqi@0: // ALSO reads & writes act as aquire & release, so:
aoqi@0: // (2) A read cannot let unrelated NON-volatile memory refs that happen after
aoqi@0: // the read float up to before the read.  It's OK for non-volatile memory refs
aoqi@0: // that happen before the volatile read to float down below it.
aoqi@0: // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
aoqi@0: // that happen BEFORE the write float down to after the write.  It's OK for
aoqi@0: // non-volatile memory refs that happen after the volatile write to float up
aoqi@0: // before it.
aoqi@0: //
aoqi@0: // We only put in barriers around volatile refs (they are expensive), not
aoqi@0: // _between_ memory refs (that would require us to track the flavor of the
aoqi@0: // previous memory refs).  Requirements (2) and (3) require some barriers
aoqi@0: // before volatile stores and after volatile loads.  These nearly cover
aoqi@0: // requirement (1) but miss the volatile-store-volatile-load case.  This final
aoqi@0: // case is placed after volatile-stores although it could just as well go
aoqi@0: // before volatile-loads.
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_StoreField(StoreField* x) {
aoqi@0:   bool needs_patching = x->needs_patching();
aoqi@0:   bool is_volatile = x->field()->is_volatile();
aoqi@0:   BasicType field_type = x->field_type();
aoqi@0:   bool is_oop = (field_type == T_ARRAY || field_type == T_OBJECT);
aoqi@0: 
aoqi@0:   CodeEmitInfo* info = NULL;
aoqi@0:   if (needs_patching) {
aoqi@0:     assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access");
aoqi@0:     info = state_for(x, x->state_before());
aoqi@0:   } else if (x->needs_null_check()) {
aoqi@0:     NullCheck* nc = x->explicit_null_check();
aoqi@0:     if (nc == NULL) {
aoqi@0:       info = state_for(x);
aoqi@0:     } else {
aoqi@0:       info = state_for(nc);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0: 
aoqi@0:   LIRItem object(x->obj(), this);
aoqi@0:   LIRItem value(x->value(),  this);
aoqi@0: 
aoqi@0:   object.load_item();
aoqi@0: 
aoqi@0:   if (is_volatile || needs_patching) {
aoqi@0:     // load item if field is volatile (fewer special cases for volatiles)
aoqi@0:     // load item if field not initialized
aoqi@0:     // load item if field not constant
aoqi@0:     // because of code patching we cannot inline constants
aoqi@0:     if (field_type == T_BYTE || field_type == T_BOOLEAN) {
aoqi@0:       value.load_byte_item();
aoqi@0:     } else  {
aoqi@0:       value.load_item();
aoqi@0:     }
aoqi@0:   } else {
aoqi@0:     value.load_for_store(field_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintNotLoaded && needs_patching) {
aoqi@0:     tty->print_cr("   ###class not loaded at store_%s bci %d",
aoqi@0:                   x->is_static() ?  "static" : "field", x->printable_bci());
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   if (x->needs_null_check() &&
aoqi@0:       (needs_patching ||
aoqi@0:        MacroAssembler::needs_explicit_null_check(x->offset()))) {
vkempik@8735:     // Emit an explicit null check because the offset is too large.
vkempik@8735:     // If the class is not loaded and the object is NULL, we need to deoptimize to throw a
vkempik@8735:     // NoClassDefFoundError in the interpreter instead of an implicit NPE from compiled code.
vkempik@8735:     __ null_check(object.result(), new CodeEmitInfo(info), /* deoptimize */ needs_patching);
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Address* address;
aoqi@0:   if (needs_patching) {
aoqi@0:     // we need to patch the offset in the instruction so don't allow
aoqi@0:     // generate_address to try to be smart about emitting the -1.
aoqi@0:     // Otherwise the patching code won't know how to find the
aoqi@0:     // instruction to patch.
aoqi@0:     address = new LIR_Address(object.result(), PATCHED_ADDR, field_type);
aoqi@0:   } else {
aoqi@0:     address = generate_address(object.result(), x->offset(), field_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_volatile && os::is_MP()) {
aoqi@0:     __ membar_release();
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_oop) {
aoqi@0:     // Do the pre-write barrier, if any.
aoqi@0:     pre_barrier(LIR_OprFact::address(address),
aoqi@0:                 LIR_OprFact::illegalOpr /* pre_val */,
aoqi@0:                 true /* do_load*/,
aoqi@0:                 needs_patching,
aoqi@0:                 (info ? new CodeEmitInfo(info) : NULL));
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_volatile && !needs_patching) {
aoqi@0:     volatile_field_store(value.result(), address, info);
aoqi@0:   } else {
aoqi@0:     LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none;
aoqi@0:     __ store(value.result(), address, info, patch_code);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_oop) {
aoqi@0:     // Store to object so mark the card of the header
aoqi@0:     post_barrier(object.result(), value.result());
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_volatile && os::is_MP()) {
aoqi@0:     __ membar();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_LoadField(LoadField* x) {
aoqi@0:   bool needs_patching = x->needs_patching();
aoqi@0:   bool is_volatile = x->field()->is_volatile();
aoqi@0:   BasicType field_type = x->field_type();
aoqi@0: 
aoqi@0:   CodeEmitInfo* info = NULL;
aoqi@0:   if (needs_patching) {
aoqi@0:     assert(x->explicit_null_check() == NULL, "can't fold null check into patching field access");
aoqi@0:     info = state_for(x, x->state_before());
aoqi@0:   } else if (x->needs_null_check()) {
aoqi@0:     NullCheck* nc = x->explicit_null_check();
aoqi@0:     if (nc == NULL) {
aoqi@0:       info = state_for(x);
aoqi@0:     } else {
aoqi@0:       info = state_for(nc);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIRItem object(x->obj(), this);
aoqi@0: 
aoqi@0:   object.load_item();
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintNotLoaded && needs_patching) {
aoqi@0:     tty->print_cr("   ###class not loaded at load_%s bci %d",
aoqi@0:                   x->is_static() ?  "static" : "field", x->printable_bci());
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   bool stress_deopt = StressLoopInvariantCodeMotion && info && info->deoptimize_on_exception();
aoqi@0:   if (x->needs_null_check() &&
aoqi@0:       (needs_patching ||
aoqi@0:        MacroAssembler::needs_explicit_null_check(x->offset()) ||
aoqi@0:        stress_deopt)) {
aoqi@0:     LIR_Opr obj = object.result();
aoqi@0:     if (stress_deopt) {
aoqi@0:       obj = new_register(T_OBJECT);
aoqi@0:       __ move(LIR_OprFact::oopConst(NULL), obj);
aoqi@0:     }
vkempik@8735:     // Emit an explicit null check because the offset is too large.
vkempik@8735:     // If the class is not loaded and the object is NULL, we need to deoptimize to throw a
vkempik@8735:     // NoClassDefFoundError in the interpreter instead of an implicit NPE from compiled code.
vkempik@8735:     __ null_check(obj, new CodeEmitInfo(info), /* deoptimize */ needs_patching);
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Opr reg = rlock_result(x, field_type);
aoqi@0:   LIR_Address* address;
aoqi@0:   if (needs_patching) {
aoqi@0:     // we need to patch the offset in the instruction so don't allow
aoqi@0:     // generate_address to try to be smart about emitting the -1.
aoqi@0:     // Otherwise the patching code won't know how to find the
aoqi@0:     // instruction to patch.
aoqi@0:     address = new LIR_Address(object.result(), PATCHED_ADDR, field_type);
aoqi@0:   } else {
aoqi@0:     address = generate_address(object.result(), x->offset(), field_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_volatile && !needs_patching) {
aoqi@0:     volatile_field_load(address, reg, info);
aoqi@0:   } else {
aoqi@0:     LIR_PatchCode patch_code = needs_patching ? lir_patch_normal : lir_patch_none;
aoqi@0:     __ load(address, reg, info, patch_code);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (is_volatile && os::is_MP()) {
aoqi@0:     __ membar_acquire();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //------------------------java.nio.Buffer.checkIndex------------------------
aoqi@0: 
aoqi@0: // int java.nio.Buffer.checkIndex(int)
aoqi@0: void LIRGenerator::do_NIOCheckIndex(Intrinsic* x) {
aoqi@0:   // NOTE: by the time we are in checkIndex() we are guaranteed that
aoqi@0:   // the buffer is non-null (because checkIndex is package-private and
aoqi@0:   // only called from within other methods in the buffer).
aoqi@0:   assert(x->number_of_arguments() == 2, "wrong type");
aoqi@0:   LIRItem buf  (x->argument_at(0), this);
aoqi@0:   LIRItem index(x->argument_at(1), this);
aoqi@0:   buf.load_item();
aoqi@0:   index.load_item();
aoqi@0: 
aoqi@0:   LIR_Opr result = rlock_result(x);
aoqi@0:   if (GenerateRangeChecks) {
aoqi@0:     CodeEmitInfo* info = state_for(x);
aoqi@0:     CodeStub* stub = new RangeCheckStub(info, index.result(), true);
aoqi@0:     if (index.result()->is_constant()) {
aoqi@1: #ifndef MIPS64
aoqi@0:       cmp_mem_int(lir_cond_belowEqual, buf.result(), java_nio_Buffer::limit_offset(), index.result()->as_jint(), info);
aoqi@0:       __ branch(lir_cond_belowEqual, T_INT, stub);
aoqi@1: #else
aoqi@1:             LIR_Opr left = LIR_OprFact::address(new LIR_Address( buf.result(),
aoqi@1:                                                 java_nio_Buffer::limit_offset(),T_INT));
aoqi@1:         LIR_Opr right = LIR_OprFact::intConst(index.result()->as_jint());
aoqi@1:       __ null_check_for_branch(lir_cond_belowEqual, left, right, info);
aoqi@1:             __ branch(lir_cond_belowEqual,left, right ,T_INT, stub); // forward branch
aoqi@1: 
aoqi@1: #endif
aoqi@0:     } else {
aoqi@1: #ifndef MIPS64
aoqi@0:       cmp_reg_mem(lir_cond_aboveEqual, index.result(), buf.result(),
aoqi@0:                   java_nio_Buffer::limit_offset(), T_INT, info);
aoqi@0:       __ branch(lir_cond_aboveEqual, T_INT, stub);
aoqi@1: #else
aoqi@1:             LIR_Opr right = LIR_OprFact::address(new LIR_Address( buf.result(), java_nio_Buffer::limit_offset(),T_INT));
aoqi@1:             LIR_Opr left =  index.result();
aoqi@1:       __ null_check_for_branch(lir_cond_aboveEqual, left, right, info);
aoqi@1:             __ branch(lir_cond_aboveEqual, left, right , T_INT, stub); // forward branch
aoqi@1: #endif
aoqi@0:     }
aoqi@0:     __ move(index.result(), result);
aoqi@0:   } else {
aoqi@0:     // Just load the index into the result register
aoqi@0:     __ move(index.result(), result);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //------------------------array access--------------------------------------
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_ArrayLength(ArrayLength* x) {
aoqi@0:   LIRItem array(x->array(), this);
aoqi@0:   array.load_item();
aoqi@0:   LIR_Opr reg = rlock_result(x);
aoqi@0: 
aoqi@0:   CodeEmitInfo* info = NULL;
aoqi@0:   if (x->needs_null_check()) {
aoqi@0:     NullCheck* nc = x->explicit_null_check();
aoqi@0:     if (nc == NULL) {
aoqi@0:       info = state_for(x);
aoqi@0:     } else {
aoqi@0:       info = state_for(nc);
aoqi@0:     }
aoqi@0:     if (StressLoopInvariantCodeMotion && info->deoptimize_on_exception()) {
aoqi@0:       LIR_Opr obj = new_register(T_OBJECT);
aoqi@0:       __ move(LIR_OprFact::oopConst(NULL), obj);
aoqi@0:       __ null_check(obj, new CodeEmitInfo(info));
aoqi@0:     }
aoqi@0:   }
aoqi@0:   __ load(new LIR_Address(array.result(), arrayOopDesc::length_offset_in_bytes(), T_INT), reg, info, lir_patch_none);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_LoadIndexed(LoadIndexed* x) {
aoqi@0:   bool use_length = x->length() != NULL;
aoqi@0:   LIRItem array(x->array(), this);
aoqi@0:   LIRItem index(x->index(), this);
aoqi@0:   LIRItem length(this);
aoqi@0:   bool needs_range_check = x->compute_needs_range_check();
aoqi@0: 
aoqi@0:   if (use_length && needs_range_check) {
aoqi@0:     length.set_instruction(x->length());
aoqi@0:     length.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   array.load_item();
aoqi@0:   if (index.is_constant() && can_inline_as_constant(x->index())) {
aoqi@0:     // let it be a constant
aoqi@0:     index.dont_load_item();
aoqi@0:   } else {
aoqi@0:     index.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   CodeEmitInfo* range_check_info = state_for(x);
aoqi@0:   CodeEmitInfo* null_check_info = NULL;
aoqi@0:   if (x->needs_null_check()) {
aoqi@0:     NullCheck* nc = x->explicit_null_check();
aoqi@0:     if (nc != NULL) {
aoqi@0:       null_check_info = state_for(nc);
aoqi@0:     } else {
aoqi@0:       null_check_info = range_check_info;
aoqi@0:     }
aoqi@0:     if (StressLoopInvariantCodeMotion && null_check_info->deoptimize_on_exception()) {
aoqi@0:       LIR_Opr obj = new_register(T_OBJECT);
aoqi@0:       __ move(LIR_OprFact::oopConst(NULL), obj);
aoqi@0:       __ null_check(obj, new CodeEmitInfo(null_check_info));
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // emit array address setup early so it schedules better
aoqi@0:   LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), false);
aoqi@0: 
aoqi@0:   if (GenerateRangeChecks && needs_range_check) {
aoqi@0:     if (StressLoopInvariantCodeMotion && range_check_info->deoptimize_on_exception()) {
aoqi@1: #ifndef MIPS64
aoqi@0:       __ branch(lir_cond_always, T_ILLEGAL, new RangeCheckStub(range_check_info, index.result()));
aoqi@1: #else
aoqi@1:      tty->print_cr("LIRGenerator::do_LoadIndexed(LoadIndexed* x) unimplemented yet!");
aoqi@1:      Unimplemented();
aoqi@1: #endif
aoqi@0:     } else if (use_length) {
aoqi@0:       // TODO: use a (modified) version of array_range_check that does not require a
aoqi@0:       //       constant length to be loaded to a register
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_belowEqual, length.result(), index.result());
aoqi@0:       __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result()));
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_belowEqual, length.result(), index.result(),T_INT, new RangeCheckStub(range_check_info, index.result()));
aoqi@1: #endif
aoqi@0:     } else {
aoqi@0:       array_range_check(array.result(), index.result(), null_check_info, range_check_info);
aoqi@0:       // The range check performs the null check, so clear it out for the load
aoqi@0:       null_check_info = NULL;
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   __ move(array_addr, rlock_result(x, x->elt_type()), null_check_info);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_NullCheck(NullCheck* x) {
aoqi@0:   if (x->can_trap()) {
aoqi@0:     LIRItem value(x->obj(), this);
aoqi@0:     value.load_item();
aoqi@0:     CodeEmitInfo* info = state_for(x);
aoqi@0:     __ null_check(value.result(), info);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_TypeCast(TypeCast* x) {
aoqi@0:   LIRItem value(x->obj(), this);
aoqi@0:   value.load_item();
aoqi@0:   // the result is the same as from the node we are casting
aoqi@0:   set_result(x, value.result());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_Throw(Throw* x) {
aoqi@0:   LIRItem exception(x->exception(), this);
aoqi@0:   exception.load_item();
aoqi@0:   set_no_result(x);
aoqi@0:   LIR_Opr exception_opr = exception.result();
aoqi@0:   CodeEmitInfo* info = state_for(x, x->state());
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintC1Statistics) {
aoqi@0:     increment_counter(Runtime1::throw_count_address(), T_INT);
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   // check if the instruction has an xhandler in any of the nested scopes
aoqi@0:   bool unwind = false;
aoqi@0:   if (info->exception_handlers()->length() == 0) {
aoqi@0:     // this throw is not inside an xhandler
aoqi@0:     unwind = true;
aoqi@0:   } else {
aoqi@0:     // get some idea of the throw type
aoqi@0:     bool type_is_exact = true;
aoqi@0:     ciType* throw_type = x->exception()->exact_type();
aoqi@0:     if (throw_type == NULL) {
aoqi@0:       type_is_exact = false;
aoqi@0:       throw_type = x->exception()->declared_type();
aoqi@0:     }
aoqi@0:     if (throw_type != NULL && throw_type->is_instance_klass()) {
aoqi@0:       ciInstanceKlass* throw_klass = (ciInstanceKlass*)throw_type;
aoqi@0:       unwind = !x->exception_handlers()->could_catch(throw_klass, type_is_exact);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // do null check before moving exception oop into fixed register
aoqi@0:   // to avoid a fixed interval with an oop during the null check.
aoqi@0:   // Use a copy of the CodeEmitInfo because debug information is
aoqi@0:   // different for null_check and throw.
aoqi@0:   if (GenerateCompilerNullChecks &&
aoqi@0:       (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) {
aoqi@0:     // if the exception object wasn't created using new then it might be null.
aoqi@0:     __ null_check(exception_opr, new CodeEmitInfo(info, x->state()->copy(ValueStack::ExceptionState, x->state()->bci())));
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (compilation()->env()->jvmti_can_post_on_exceptions()) {
aoqi@0:     // we need to go through the exception lookup path to get JVMTI
aoqi@0:     // notification done
aoqi@0:     unwind = false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // move exception oop into fixed register
aoqi@0:   __ move(exception_opr, exceptionOopOpr());
aoqi@0: 
aoqi@0:   if (unwind) {
aoqi@0:     __ unwind_exception(exceptionOopOpr());
aoqi@0:   } else {
aoqi@0:     __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_RoundFP(RoundFP* x) {
aoqi@0:   LIRItem input(x->input(), this);
aoqi@0:   input.load_item();
aoqi@0:   LIR_Opr input_opr = input.result();
aoqi@0:   assert(input_opr->is_register(), "why round if value is not in a register?");
aoqi@0:   assert(input_opr->is_single_fpu() || input_opr->is_double_fpu(), "input should be floating-point value");
aoqi@0:   if (input_opr->is_single_fpu()) {
aoqi@0:     set_result(x, round_item(input_opr)); // This code path not currently taken
aoqi@0:   } else {
aoqi@0:     LIR_Opr result = new_register(T_DOUBLE);
aoqi@0:     set_vreg_flag(result, must_start_in_memory);
aoqi@0:     __ roundfp(input_opr, LIR_OprFact::illegalOpr, result);
aoqi@0:     set_result(x, result);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
iveresov@7205: // Here UnsafeGetRaw may have x->base() and x->index() be int or long
iveresov@7205: // on both 64 and 32 bits. Expecting x->base() to be always long on 64bit.
aoqi@0: void LIRGenerator::do_UnsafeGetRaw(UnsafeGetRaw* x) {
aoqi@0:   LIRItem base(x->base(), this);
aoqi@0:   LIRItem idx(this);
aoqi@0: 
aoqi@0:   base.load_item();
aoqi@0:   if (x->has_index()) {
aoqi@0:     idx.set_instruction(x->index());
aoqi@0:     idx.load_nonconstant();
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Opr reg = rlock_result(x, x->basic_type());
aoqi@0: 
aoqi@0:   int   log2_scale = 0;
aoqi@0:   if (x->has_index()) {
aoqi@0:     log2_scale = x->log2_scale();
aoqi@0:   }
aoqi@0: 
aoqi@0:   assert(!x->has_index() || idx.value() == x->index(), "should match");
aoqi@0: 
aoqi@0:   LIR_Opr base_op = base.result();
iveresov@7205:   LIR_Opr index_op = idx.result();
aoqi@0: #ifndef _LP64
iveresov@7233:   if (base_op->type() == T_LONG) {
aoqi@0:     base_op = new_register(T_INT);
aoqi@0:     __ convert(Bytecodes::_l2i, base.result(), base_op);
aoqi@0:   }
iveresov@7205:   if (x->has_index()) {
iveresov@7233:     if (index_op->type() == T_LONG) {
iveresov@7205:       LIR_Opr long_index_op = index_op;
iveresov@7233:       if (index_op->is_constant()) {
iveresov@7205:         long_index_op = new_register(T_LONG);
iveresov@7205:         __ move(index_op, long_index_op);
iveresov@7205:       }
iveresov@7205:       index_op = new_register(T_INT);
iveresov@7205:       __ convert(Bytecodes::_l2i, long_index_op, index_op);
iveresov@7205:     } else {
iveresov@7205:       assert(x->index()->type()->tag() == intTag, "must be");
iveresov@7205:     }
iveresov@7205:   }
iveresov@7205:   // At this point base and index should be all ints.
iveresov@7205:   assert(base_op->type() == T_INT && !base_op->is_constant(), "base should be an non-constant int");
iveresov@7205:   assert(!x->has_index() || index_op->type() == T_INT, "index should be an int");
iveresov@7205: #else
iveresov@7205:   if (x->has_index()) {
iveresov@7233:     if (index_op->type() == T_INT) {
iveresov@7233:       if (!index_op->is_constant()) {
iveresov@7205:         index_op = new_register(T_LONG);
iveresov@7205:         __ convert(Bytecodes::_i2l, idx.result(), index_op);
iveresov@7205:       }
iveresov@7205:     } else {
iveresov@7233:       assert(index_op->type() == T_LONG, "must be");
iveresov@7233:       if (index_op->is_constant()) {
iveresov@7205:         index_op = new_register(T_LONG);
iveresov@7205:         __ move(idx.result(), index_op);
iveresov@7205:       }
iveresov@7205:     }
iveresov@7205:   }
iveresov@7205:   // At this point base is a long non-constant
iveresov@7205:   // Index is a long register or a int constant.
iveresov@7205:   // We allow the constant to stay an int because that would allow us a more compact encoding by
iveresov@7205:   // embedding an immediate offset in the address expression. If we have a long constant, we have to
iveresov@7205:   // move it into a register first.
iveresov@7205:   assert(base_op->type() == T_LONG && !base_op->is_constant(), "base must be a long non-constant");
iveresov@7205:   assert(!x->has_index() || (index_op->type() == T_INT && index_op->is_constant()) ||
iveresov@7205:                             (index_op->type() == T_LONG && !index_op->is_constant()), "unexpected index type");
aoqi@0: #endif
aoqi@0: 
aoqi@0:   BasicType dst_type = x->basic_type();
aoqi@0: 
aoqi@0:   LIR_Address* addr;
aoqi@0:   if (index_op->is_constant()) {
aoqi@0:     assert(log2_scale == 0, "must not have a scale");
iveresov@7205:     assert(index_op->type() == T_INT, "only int constants supported");
aoqi@0:     addr = new LIR_Address(base_op, index_op->as_jint(), dst_type);
aoqi@0:   } else {
aoqi@0: #ifdef X86
aoqi@0:     addr = new LIR_Address(base_op, index_op, LIR_Address::Scale(log2_scale), 0, dst_type);
dlong@7598: #elif defined(GENERATE_ADDRESS_IS_PREFERRED)
aoqi@0:     addr = generate_address(base_op, index_op, log2_scale, 0, dst_type);
aoqi@0: #else
aoqi@0:     if (index_op->is_illegal() || log2_scale == 0) {
aoqi@1: #ifndef MIPS64
aoqi@0:       addr = new LIR_Address(base_op, index_op, dst_type);
aoqi@1: #else
aoqi@1:    #ifdef _LP64
aoqi@1:       LIR_Opr ptr = new_register(T_LONG);
aoqi@1:    #else
aoqi@1:       LIR_Opr ptr = new_register(T_INT);
aoqi@1:    #endif
aoqi@1:       __ move(base_op, ptr);
aoqi@1:       if(index_op -> is_valid())
aoqi@1:          __ add(ptr, index_op, ptr);
aoqi@1:       addr = new LIR_Address(ptr, 0, dst_type);
aoqi@1: #endif
aoqi@0:     } else {
aoqi@0:       LIR_Opr tmp = new_pointer_register();
aoqi@0:       __ shift_left(index_op, log2_scale, tmp);
aoqi@0:       addr = new LIR_Address(base_op, tmp, dst_type);
aoqi@0:     }
aoqi@0: #endif
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) {
aoqi@0:     __ unaligned_move(addr, reg);
aoqi@0:   } else {
aoqi@0:     if (dst_type == T_OBJECT && x->is_wide()) {
aoqi@0:       __ move_wide(addr, reg);
aoqi@0:     } else {
aoqi@0:       __ move(addr, reg);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafePutRaw(UnsafePutRaw* x) {
aoqi@0:   int  log2_scale = 0;
aoqi@0:   BasicType type = x->basic_type();
aoqi@0: 
aoqi@0:   if (x->has_index()) {
aoqi@0:     log2_scale = x->log2_scale();
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIRItem base(x->base(), this);
aoqi@0:   LIRItem value(x->value(), this);
aoqi@0:   LIRItem idx(this);
aoqi@0: 
aoqi@0:   base.load_item();
aoqi@0:   if (x->has_index()) {
aoqi@0:     idx.set_instruction(x->index());
aoqi@0:     idx.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (type == T_BYTE || type == T_BOOLEAN) {
aoqi@0:     value.load_byte_item();
aoqi@0:   } else {
aoqi@0:     value.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   LIR_Opr base_op = base.result();
iveresov@7205:   LIR_Opr index_op = idx.result();
iveresov@7205: 
dlong@7598: #ifdef GENERATE_ADDRESS_IS_PREFERRED
dlong@7598:   LIR_Address* addr = generate_address(base_op, index_op, log2_scale, 0, x->basic_type());
dlong@7598: #else
aoqi@0: #ifndef _LP64
iveresov@7233:   if (base_op->type() == T_LONG) {
aoqi@0:     base_op = new_register(T_INT);
aoqi@0:     __ convert(Bytecodes::_l2i, base.result(), base_op);
aoqi@0:   }
iveresov@7205:   if (x->has_index()) {
iveresov@7233:     if (index_op->type() == T_LONG) {
iveresov@7205:       index_op = new_register(T_INT);
iveresov@7205:       __ convert(Bytecodes::_l2i, idx.result(), index_op);
iveresov@7205:     }
iveresov@7205:   }
iveresov@7205:   // At this point base and index should be all ints and not constants
iveresov@7205:   assert(base_op->type() == T_INT && !base_op->is_constant(), "base should be an non-constant int");
iveresov@7205:   assert(!x->has_index() || (index_op->type() == T_INT && !index_op->is_constant()), "index should be an non-constant int");
iveresov@7205: #else
iveresov@7205:   if (x->has_index()) {
iveresov@7233:     if (index_op->type() == T_INT) {
iveresov@7205:       index_op = new_register(T_LONG);
iveresov@7205:       __ convert(Bytecodes::_i2l, idx.result(), index_op);
iveresov@7205:     }
iveresov@7205:   }
iveresov@7205:   // At this point base and index are long and non-constant
iveresov@7205:   assert(base_op->type() == T_LONG && !base_op->is_constant(), "base must be a non-constant long");
iveresov@7205:   assert(!x->has_index() || (index_op->type() == T_LONG && !index_op->is_constant()), "index must be a non-constant long");
aoqi@0: #endif
aoqi@0: 
aoqi@0:   if (log2_scale != 0) {
aoqi@0:     // temporary fix (platform dependent code without shift on Intel would be better)
iveresov@7205:     // TODO: ARM also allows embedded shift in the address
roland@7924:     LIR_Opr tmp = new_pointer_register();
roland@7924:     if (TwoOperandLIRForm) {
roland@7924:       __ move(index_op, tmp);
roland@7924:       index_op = tmp;
roland@7924:     }
roland@7924:     __ shift_left(index_op, log2_scale, tmp);
roland@7924:     if (!TwoOperandLIRForm) {
roland@7924:       index_op = tmp;
roland@7924:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type());
dlong@7598: #endif // !GENERATE_ADDRESS_IS_PREFERRED
aoqi@0:   __ move(value.result(), addr);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafeGetObject(UnsafeGetObject* x) {
aoqi@0:   BasicType type = x->basic_type();
aoqi@0:   LIRItem src(x->object(), this);
aoqi@0:   LIRItem off(x->offset(), this);
aoqi@0: 
aoqi@0:   off.load_item();
aoqi@0:   src.load_item();
aoqi@0: 
aoqi@0:   LIR_Opr value = rlock_result(x, x->basic_type());
aoqi@0: 
aoqi@0:   get_Object_unsafe(value, src.result(), off.result(), type, x->is_volatile());
aoqi@0: 
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0:   // We might be reading the value of the referent field of a
aoqi@0:   // Reference object in order to attach it back to the live
aoqi@0:   // object graph. If G1 is enabled then we need to record
aoqi@0:   // the value that is being returned in an SATB log buffer.
aoqi@0:   //
aoqi@0:   // We need to generate code similar to the following...
aoqi@0:   //
aoqi@0:   // if (offset == java_lang_ref_Reference::referent_offset) {
aoqi@0:   //   if (src != NULL) {
aoqi@0:   //     if (klass(src)->reference_type() != REF_NONE) {
aoqi@0:   //       pre_barrier(..., value, ...);
aoqi@0:   //     }
aoqi@0:   //   }
aoqi@0:   // }
aoqi@0: 
aoqi@0:   if (UseG1GC && type == T_OBJECT) {
aoqi@0:     bool gen_pre_barrier = true;     // Assume we need to generate pre_barrier.
aoqi@0:     bool gen_offset_check = true;    // Assume we need to generate the offset guard.
aoqi@0:     bool gen_source_check = true;    // Assume we need to check the src object for null.
aoqi@0:     bool gen_type_check = true;      // Assume we need to check the reference_type.
aoqi@0: 
aoqi@0:     if (off.is_constant()) {
aoqi@0:       jlong off_con = (off.type()->is_int() ?
aoqi@0:                         (jlong) off.get_jint_constant() :
aoqi@0:                         off.get_jlong_constant());
aoqi@0: 
aoqi@0: 
aoqi@0:       if (off_con != (jlong) java_lang_ref_Reference::referent_offset) {
aoqi@0:         // The constant offset is something other than referent_offset.
aoqi@0:         // We can skip generating/checking the remaining guards and
aoqi@0:         // skip generation of the code stub.
aoqi@0:         gen_pre_barrier = false;
aoqi@0:       } else {
aoqi@0:         // The constant offset is the same as referent_offset -
aoqi@0:         // we do not need to generate a runtime offset check.
aoqi@0:         gen_offset_check = false;
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // We don't need to generate stub if the source object is an array
aoqi@0:     if (gen_pre_barrier && src.type()->is_array()) {
aoqi@0:       gen_pre_barrier = false;
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (gen_pre_barrier) {
aoqi@0:       // We still need to continue with the checks.
aoqi@0:       if (src.is_constant()) {
aoqi@0:         ciObject* src_con = src.get_jobject_constant();
aoqi@0:         guarantee(src_con != NULL, "no source constant");
aoqi@0: 
aoqi@0:         if (src_con->is_null_object()) {
aoqi@0:           // The constant src object is null - We can skip
aoqi@0:           // generating the code stub.
aoqi@0:           gen_pre_barrier = false;
aoqi@0:         } else {
aoqi@0:           // Non-null constant source object. We still have to generate
aoqi@0:           // the slow stub - but we don't need to generate the runtime
aoqi@0:           // null object check.
aoqi@0:           gen_source_check = false;
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:     if (gen_pre_barrier && !PatchALot) {
aoqi@0:       // Can the klass of object be statically determined to be
aoqi@0:       // a sub-class of Reference?
aoqi@0:       ciType* type = src.value()->declared_type();
aoqi@0:       if ((type != NULL) && type->is_loaded()) {
aoqi@0:         if (type->is_subtype_of(compilation()->env()->Reference_klass())) {
aoqi@0:           gen_type_check = false;
aoqi@0:         } else if (type->is_klass() &&
aoqi@0:                    !compilation()->env()->Object_klass()->is_subtype_of(type->as_klass())) {
aoqi@0:           // Not Reference and not Object klass.
aoqi@0:           gen_pre_barrier = false;
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (gen_pre_barrier) {
aoqi@0:       LabelObj* Lcont = new LabelObj();
aoqi@0: 
aoqi@0:       // We can have generate one runtime check here. Let's start with
aoqi@0:       // the offset check.
aoqi@0:       if (gen_offset_check) {
aoqi@0:         // if (offset != referent_offset) -> continue
aoqi@0:         // If offset is an int then we can do the comparison with the
aoqi@0:         // referent_offset constant; otherwise we need to move
aoqi@0:         // referent_offset into a temporary register and generate
aoqi@0:         // a reg-reg compare.
aoqi@0: 
aoqi@0:         LIR_Opr referent_off;
aoqi@0: 
aoqi@0:         if (off.type()->is_int()) {
aoqi@0:           referent_off = LIR_OprFact::intConst(java_lang_ref_Reference::referent_offset);
aoqi@0:         } else {
aoqi@0:           assert(off.type()->is_long(), "what else?");
aoqi@0:           referent_off = new_register(T_LONG);
aoqi@0:           __ move(LIR_OprFact::longConst(java_lang_ref_Reference::referent_offset), referent_off);
aoqi@0:         }
aoqi@1: #ifndef MIPS64
aoqi@0:         __ cmp(lir_cond_notEqual, off.result(), referent_off);
aoqi@0:         __ branch(lir_cond_notEqual, as_BasicType(off.type()), Lcont->label());
aoqi@1: #else
aoqi@1:         __ branch(lir_cond_notEqual, off.result(), referent_off,  Lcont->label());
aoqi@1: #endif
aoqi@0:       }
aoqi@0:       if (gen_source_check) {
aoqi@0:         // offset is a const and equals referent offset
aoqi@0:         // if (source == null) -> continue
aoqi@1: #ifndef MIPS64
aoqi@0:         __ cmp(lir_cond_equal, src.result(), LIR_OprFact::oopConst(NULL));
aoqi@0:         __ branch(lir_cond_equal, T_OBJECT, Lcont->label());
aoqi@1: #else
aoqi@1:         __ branch(lir_cond_equal, src.result(), LIR_OprFact::oopConst(NULL),  Lcont->label());
aoqi@1: #endif
aoqi@0:       }
aoqi@0:       LIR_Opr src_klass = new_register(T_OBJECT);
aoqi@0:       if (gen_type_check) {
aoqi@0:         // We have determined that offset == referent_offset && src != null.
aoqi@0:         // if (src->_klass->_reference_type == REF_NONE) -> continue
aoqi@0:         __ move(new LIR_Address(src.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), src_klass);
aoqi@0:         LIR_Address* reference_type_addr = new LIR_Address(src_klass, in_bytes(InstanceKlass::reference_type_offset()), T_BYTE);
aoqi@0:         LIR_Opr reference_type = new_register(T_INT);
aoqi@0:         __ move(reference_type_addr, reference_type);
aoqi@1: #ifndef MIPS64
aoqi@0:         __ cmp(lir_cond_equal, reference_type, LIR_OprFact::intConst(REF_NONE));
aoqi@0:         __ branch(lir_cond_equal, T_INT, Lcont->label());
aoqi@1: #else
aoqi@1:         __ branch(lir_cond_equal, reference_type, LIR_OprFact::intConst(REF_NONE),  Lcont->label());
aoqi@1: #endif
aoqi@0:       }
aoqi@0:       {
aoqi@0:         // We have determined that src->_klass->_reference_type != REF_NONE
aoqi@0:         // so register the value in the referent field with the pre-barrier.
aoqi@0:         pre_barrier(LIR_OprFact::illegalOpr /* addr_opr */,
aoqi@0:                     value  /* pre_val */,
aoqi@0:                     false  /* do_load */,
aoqi@0:                     false  /* patch */,
aoqi@0:                     NULL   /* info */);
aoqi@0:       }
aoqi@0:       __ branch_destination(Lcont->label());
aoqi@0:     }
aoqi@0:   }
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0:   if (x->is_volatile() && os::is_MP()) __ membar_acquire();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafePutObject(UnsafePutObject* x) {
aoqi@0:   BasicType type = x->basic_type();
aoqi@0:   LIRItem src(x->object(), this);
aoqi@0:   LIRItem off(x->offset(), this);
aoqi@0:   LIRItem data(x->value(), this);
aoqi@0: 
aoqi@0:   src.load_item();
aoqi@0:   if (type == T_BOOLEAN || type == T_BYTE) {
aoqi@0:     data.load_byte_item();
aoqi@0:   } else {
aoqi@0:     data.load_item();
aoqi@0:   }
aoqi@0:   off.load_item();
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   if (x->is_volatile() && os::is_MP()) __ membar_release();
aoqi@0:   put_Object_unsafe(src.result(), off.result(), data.result(), type, x->is_volatile());
aoqi@0:   if (x->is_volatile() && os::is_MP()) __ membar();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) {
aoqi@0:   LIRItem src(x->object(), this);
aoqi@0:   LIRItem off(x->offset(), this);
aoqi@0: 
aoqi@0:   src.load_item();
aoqi@0:   if (off.is_constant() && can_inline_as_constant(x->offset())) {
aoqi@0:     // let it be a constant
aoqi@0:     off.dont_load_item();
aoqi@0:   } else {
aoqi@0:     off.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE);
aoqi@0:   __ prefetch(addr, is_store);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) {
aoqi@0:   do_UnsafePrefetch(x, false);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {
aoqi@0:   do_UnsafePrefetch(x, true);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) {
aoqi@0:   int lng = x->length();
aoqi@0: 
aoqi@0:   for (int i = 0; i < lng; i++) {
aoqi@0:     SwitchRange* one_range = x->at(i);
aoqi@0:     int low_key = one_range->low_key();
aoqi@0:     int high_key = one_range->high_key();
aoqi@0:     BlockBegin* dest = one_range->sux();
aoqi@0:     if (low_key == high_key) {
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_equal, value, low_key);
aoqi@0:       __ branch(lir_cond_equal, T_INT, dest);
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_equal, value, LIR_OprFact::intConst(low_key), T_INT, dest);
aoqi@1: #endif
aoqi@0:     } else if (high_key - low_key == 1) {
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_equal, value, low_key);
aoqi@0:       __ branch(lir_cond_equal, T_INT, dest);
aoqi@0:       __ cmp(lir_cond_equal, value, high_key);
aoqi@0:       __ branch(lir_cond_equal, T_INT, dest);
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_equal, value, LIR_OprFact::intConst(low_key), T_INT, dest);
aoqi@1:       __ branch(lir_cond_equal, value, LIR_OprFact::intConst(high_key), T_INT, dest);
aoqi@1: 
aoqi@1: #endif
aoqi@0:     } else {
aoqi@0:       LabelObj* L = new LabelObj();
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_less, value, low_key);
aoqi@0:       __ branch(lir_cond_less, T_INT, L->label());
aoqi@0:       __ cmp(lir_cond_lessEqual, value, high_key);
aoqi@0:       __ branch(lir_cond_lessEqual, T_INT, dest);
aoqi@0:       __ branch_destination(L->label());
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_less, value, LIR_OprFact::intConst(low_key), L->label());
aoqi@1:       __ branch(lir_cond_lessEqual, value, LIR_OprFact::intConst(high_key), T_INT, dest);
aoqi@1:       __ branch_destination(L->label());
aoqi@1: #endif
aoqi@0:     }
aoqi@0:   }
aoqi@0:   __ jump(default_sux);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: SwitchRangeArray* LIRGenerator::create_lookup_ranges(TableSwitch* x) {
aoqi@0:   SwitchRangeList* res = new SwitchRangeList();
aoqi@0:   int len = x->length();
aoqi@0:   if (len > 0) {
aoqi@0:     BlockBegin* sux = x->sux_at(0);
aoqi@0:     int key = x->lo_key();
aoqi@0:     BlockBegin* default_sux = x->default_sux();
aoqi@0:     SwitchRange* range = new SwitchRange(key, sux);
aoqi@0:     for (int i = 0; i < len; i++, key++) {
aoqi@0:       BlockBegin* new_sux = x->sux_at(i);
aoqi@0:       if (sux == new_sux) {
aoqi@0:         // still in same range
aoqi@0:         range->set_high_key(key);
aoqi@0:       } else {
aoqi@0:         // skip tests which explicitly dispatch to the default
aoqi@0:         if (sux != default_sux) {
aoqi@0:           res->append(range);
aoqi@0:         }
aoqi@0:         range = new SwitchRange(key, new_sux);
aoqi@0:       }
aoqi@0:       sux = new_sux;
aoqi@0:     }
aoqi@0:     if (res->length() == 0 || res->last() != range)  res->append(range);
aoqi@0:   }
aoqi@0:   return res;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // we expect the keys to be sorted by increasing value
aoqi@0: SwitchRangeArray* LIRGenerator::create_lookup_ranges(LookupSwitch* x) {
aoqi@0:   SwitchRangeList* res = new SwitchRangeList();
aoqi@0:   int len = x->length();
aoqi@0:   if (len > 0) {
aoqi@0:     BlockBegin* default_sux = x->default_sux();
aoqi@0:     int key = x->key_at(0);
aoqi@0:     BlockBegin* sux = x->sux_at(0);
aoqi@0:     SwitchRange* range = new SwitchRange(key, sux);
aoqi@0:     for (int i = 1; i < len; i++) {
aoqi@0:       int new_key = x->key_at(i);
aoqi@0:       BlockBegin* new_sux = x->sux_at(i);
aoqi@0:       if (key+1 == new_key && sux == new_sux) {
aoqi@0:         // still in same range
aoqi@0:         range->set_high_key(new_key);
aoqi@0:       } else {
aoqi@0:         // skip tests which explicitly dispatch to the default
aoqi@0:         if (range->sux() != default_sux) {
aoqi@0:           res->append(range);
aoqi@0:         }
aoqi@0:         range = new SwitchRange(new_key, new_sux);
aoqi@0:       }
aoqi@0:       key = new_key;
aoqi@0:       sux = new_sux;
aoqi@0:     }
aoqi@0:     if (res->length() == 0 || res->last() != range)  res->append(range);
aoqi@0:   }
aoqi@0:   return res;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_TableSwitch(TableSwitch* x) {
aoqi@0:   LIRItem tag(x->tag(), this);
aoqi@0:   tag.load_item();
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   if (x->is_safepoint()) {
aoqi@0:     __ safepoint(safepoint_poll_register(), state_for(x, x->state_before()));
aoqi@0:   }
aoqi@0: 
aoqi@0:   // move values into phi locations
aoqi@0:   move_to_phi(x->state());
aoqi@0: 
aoqi@0:   int lo_key = x->lo_key();
aoqi@0:   int hi_key = x->hi_key();
aoqi@0:   int len = x->length();
aoqi@0:   LIR_Opr value = tag.result();
aoqi@0:   if (UseTableRanges) {
aoqi@0:     do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux());
aoqi@0:   } else {
aoqi@0:     for (int i = 0; i < len; i++) {
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_equal, value, i + lo_key);
aoqi@0:       __ branch(lir_cond_equal, T_INT, x->sux_at(i));
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_equal, value, LIR_OprFact::intConst(i+lo_key), T_INT, x->sux_at(i));
aoqi@1: #endif
aoqi@0:     }
aoqi@0:     __ jump(x->default_sux());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_LookupSwitch(LookupSwitch* x) {
aoqi@0:   LIRItem tag(x->tag(), this);
aoqi@0:   tag.load_item();
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   if (x->is_safepoint()) {
aoqi@0:     __ safepoint(safepoint_poll_register(), state_for(x, x->state_before()));
aoqi@0:   }
aoqi@0: 
aoqi@0:   // move values into phi locations
aoqi@0:   move_to_phi(x->state());
aoqi@0: 
aoqi@0:   LIR_Opr value = tag.result();
aoqi@0:   if (UseTableRanges) {
aoqi@0:     do_SwitchRanges(create_lookup_ranges(x), value, x->default_sux());
aoqi@0:   } else {
aoqi@0:     int len = x->length();
aoqi@0:     for (int i = 0; i < len; i++) {
aoqi@1: #ifndef MIPS64
aoqi@0:       __ cmp(lir_cond_equal, value, x->key_at(i));
aoqi@0:       __ branch(lir_cond_equal, T_INT, x->sux_at(i));
aoqi@1: #else
aoqi@1:       __ branch(lir_cond_equal, value, LIR_OprFact::intConst(x->key_at(i)), T_INT, x->sux_at(i));
aoqi@1: #endif
aoqi@0:     }
aoqi@0:     __ jump(x->default_sux());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_Goto(Goto* x) {
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   if (block()->next()->as_OsrEntry()) {
aoqi@0:     // need to free up storage used for OSR entry point
aoqi@0:     LIR_Opr osrBuffer = block()->next()->operand();
aoqi@0:     BasicTypeList signature;
iveresov@7585:     signature.append(NOT_LP64(T_INT) LP64_ONLY(T_LONG)); // pass a pointer to osrBuffer
aoqi@0:     CallingConvention* cc = frame_map()->c_calling_convention(&signature);
aoqi@0:     __ move(osrBuffer, cc->args()->at(0));
aoqi@0:     __ call_runtime_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_end),
aoqi@0:                          getThreadTemp(), LIR_OprFact::illegalOpr, cc->args());
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->is_safepoint()) {
aoqi@0:     ValueStack* state = x->state_before() ? x->state_before() : x->state();
aoqi@0: 
aoqi@0:     // increment backedge counter if needed
aoqi@0:     CodeEmitInfo* info = state_for(x, state);
aoqi@0:     increment_backedge_counter(info, x->profiled_bci());
aoqi@0:     CodeEmitInfo* safepoint_info = state_for(x, state);
aoqi@0:     __ safepoint(safepoint_poll_register(), safepoint_info);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Gotos can be folded Ifs, handle this case.
aoqi@0:   if (x->should_profile()) {
aoqi@0:     ciMethod* method = x->profiled_method();
aoqi@0:     assert(method != NULL, "method should be set if branch is profiled");
aoqi@0:     ciMethodData* md = method->method_data_or_null();
aoqi@0:     assert(md != NULL, "Sanity");
aoqi@0:     ciProfileData* data = md->bci_to_data(x->profiled_bci());
aoqi@0:     assert(data != NULL, "must have profiling data");
aoqi@0:     int offset;
aoqi@0:     if (x->direction() == Goto::taken) {
aoqi@0:       assert(data->is_BranchData(), "need BranchData for two-way branches");
aoqi@0:       offset = md->byte_offset_of_slot(data, BranchData::taken_offset());
aoqi@0:     } else if (x->direction() == Goto::not_taken) {
aoqi@0:       assert(data->is_BranchData(), "need BranchData for two-way branches");
aoqi@0:       offset = md->byte_offset_of_slot(data, BranchData::not_taken_offset());
aoqi@0:     } else {
aoqi@0:       assert(data->is_JumpData(), "need JumpData for branches");
aoqi@0:       offset = md->byte_offset_of_slot(data, JumpData::taken_offset());
aoqi@0:     }
aoqi@0:     LIR_Opr md_reg = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(md->constant_encoding(), md_reg);
aoqi@0: 
aoqi@0:     increment_counter(new LIR_Address(md_reg, offset,
aoqi@0:                                       NOT_LP64(T_INT) LP64_ONLY(T_LONG)), DataLayout::counter_increment);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // emit phi-instruction move after safepoint since this simplifies
aoqi@0:   // describing the state as the safepoint.
aoqi@0:   move_to_phi(x->state());
aoqi@0: 
aoqi@0:   __ jump(x->default_sux());
aoqi@0: }
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Emit profiling code if needed for arguments, parameters, return value types
aoqi@0:  *
aoqi@0:  * @param md                    MDO the code will update at runtime
aoqi@0:  * @param md_base_offset        common offset in the MDO for this profile and subsequent ones
aoqi@0:  * @param md_offset             offset in the MDO (on top of md_base_offset) for this profile
aoqi@0:  * @param profiled_k            current profile
aoqi@0:  * @param obj                   IR node for the object to be profiled
aoqi@0:  * @param mdp                   register to hold the pointer inside the MDO (md + md_base_offset).
aoqi@0:  *                              Set once we find an update to make and use for next ones.
aoqi@0:  * @param not_null              true if we know obj cannot be null
aoqi@0:  * @param signature_at_call_k   signature at call for obj
aoqi@0:  * @param callee_signature_k    signature of callee for obj
aoqi@0:  *                              at call and callee signatures differ at method handle call
aoqi@0:  * @return                      the only klass we know will ever be seen at this profile point
aoqi@0:  */
aoqi@0: ciKlass* LIRGenerator::profile_type(ciMethodData* md, int md_base_offset, int md_offset, intptr_t profiled_k,
aoqi@0:                                     Value obj, LIR_Opr& mdp, bool not_null, ciKlass* signature_at_call_k,
aoqi@0:                                     ciKlass* callee_signature_k) {
aoqi@0:   ciKlass* result = NULL;
aoqi@0:   bool do_null = !not_null && !TypeEntries::was_null_seen(profiled_k);
aoqi@0:   bool do_update = !TypeEntries::is_type_unknown(profiled_k);
aoqi@0:   // known not to be null or null bit already set and already set to
aoqi@0:   // unknown: nothing we can do to improve profiling
aoqi@0:   if (!do_null && !do_update) {
aoqi@0:     return result;
aoqi@0:   }
aoqi@0: 
aoqi@0:   ciKlass* exact_klass = NULL;
aoqi@0:   Compilation* comp = Compilation::current();
aoqi@0:   if (do_update) {
aoqi@0:     // try to find exact type, using CHA if possible, so that loading
aoqi@0:     // the klass from the object can be avoided
aoqi@0:     ciType* type = obj->exact_type();
aoqi@0:     if (type == NULL) {
aoqi@0:       type = obj->declared_type();
aoqi@0:       type = comp->cha_exact_type(type);
aoqi@0:     }
aoqi@0:     assert(type == NULL || type->is_klass(), "type should be class");
aoqi@0:     exact_klass = (type != NULL && type->is_loaded()) ? (ciKlass*)type : NULL;
aoqi@0: 
aoqi@0:     do_update = exact_klass == NULL || ciTypeEntries::valid_ciklass(profiled_k) != exact_klass;
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (!do_null && !do_update) {
aoqi@0:     return result;
aoqi@0:   }
aoqi@0: 
aoqi@0:   ciKlass* exact_signature_k = NULL;
aoqi@0:   if (do_update) {
aoqi@0:     // Is the type from the signature exact (the only one possible)?
aoqi@0:     exact_signature_k = signature_at_call_k->exact_klass();
aoqi@0:     if (exact_signature_k == NULL) {
aoqi@0:       exact_signature_k = comp->cha_exact_type(signature_at_call_k);
aoqi@0:     } else {
aoqi@0:       result = exact_signature_k;
aoqi@0:       // Known statically. No need to emit any code: prevent
aoqi@0:       // LIR_Assembler::emit_profile_type() from emitting useless code
aoqi@0:       profiled_k = ciTypeEntries::with_status(result, profiled_k);
aoqi@0:     }
aoqi@0:     // exact_klass and exact_signature_k can be both non NULL but
aoqi@0:     // different if exact_klass is loaded after the ciObject for
aoqi@0:     // exact_signature_k is created.
aoqi@0:     if (exact_klass == NULL && exact_signature_k != NULL && exact_klass != exact_signature_k) {
aoqi@0:       // sometimes the type of the signature is better than the best type
aoqi@0:       // the compiler has
aoqi@0:       exact_klass = exact_signature_k;
aoqi@0:     }
aoqi@0:     if (callee_signature_k != NULL &&
aoqi@0:         callee_signature_k != signature_at_call_k) {
aoqi@0:       ciKlass* improved_klass = callee_signature_k->exact_klass();
aoqi@0:       if (improved_klass == NULL) {
aoqi@0:         improved_klass = comp->cha_exact_type(callee_signature_k);
aoqi@0:       }
aoqi@0:       if (exact_klass == NULL && improved_klass != NULL && exact_klass != improved_klass) {
aoqi@0:         exact_klass = exact_signature_k;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     do_update = exact_klass == NULL || ciTypeEntries::valid_ciklass(profiled_k) != exact_klass;
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (!do_null && !do_update) {
aoqi@0:     return result;
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (mdp == LIR_OprFact::illegalOpr) {
aoqi@0:     mdp = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(md->constant_encoding(), mdp);
aoqi@0:     if (md_base_offset != 0) {
aoqi@0:       LIR_Address* base_type_address = new LIR_Address(mdp, md_base_offset, T_ADDRESS);
aoqi@0:       mdp = new_pointer_register();
aoqi@0:       __ leal(LIR_OprFact::address(base_type_address), mdp);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   LIRItem value(obj, this);
aoqi@0:   value.load_item();
aoqi@0:   __ profile_type(new LIR_Address(mdp, md_offset, T_METADATA),
aoqi@0:                   value.result(), exact_klass, profiled_k, new_pointer_register(), not_null, exact_signature_k != NULL);
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: // profile parameters on entry to the root of the compilation
aoqi@0: void LIRGenerator::profile_parameters(Base* x) {
aoqi@0:   if (compilation()->profile_parameters()) {
aoqi@0:     CallingConvention* args = compilation()->frame_map()->incoming_arguments();
aoqi@0:     ciMethodData* md = scope()->method()->method_data_or_null();
aoqi@0:     assert(md != NULL, "Sanity");
aoqi@0: 
aoqi@0:     if (md->parameters_type_data() != NULL) {
aoqi@0:       ciParametersTypeData* parameters_type_data = md->parameters_type_data();
aoqi@0:       ciTypeStackSlotEntries* parameters =  parameters_type_data->parameters();
aoqi@0:       LIR_Opr mdp = LIR_OprFact::illegalOpr;
aoqi@0:       for (int java_index = 0, i = 0, j = 0; j < parameters_type_data->number_of_parameters(); i++) {
aoqi@0:         LIR_Opr src = args->at(i);
aoqi@0:         assert(!src->is_illegal(), "check");
aoqi@0:         BasicType t = src->type();
aoqi@0:         if (t == T_OBJECT || t == T_ARRAY) {
aoqi@0:           intptr_t profiled_k = parameters->type(j);
aoqi@0:           Local* local = x->state()->local_at(java_index)->as_Local();
aoqi@0:           ciKlass* exact = profile_type(md, md->byte_offset_of_slot(parameters_type_data, ParametersTypeData::type_offset(0)),
aoqi@0:                                         in_bytes(ParametersTypeData::type_offset(j)) - in_bytes(ParametersTypeData::type_offset(0)),
aoqi@0:                                         profiled_k, local, mdp, false, local->declared_type()->as_klass(), NULL);
aoqi@0:           // If the profile is known statically set it once for all and do not emit any code
aoqi@0:           if (exact != NULL) {
aoqi@0:             md->set_parameter_type(j, exact);
aoqi@0:           }
aoqi@0:           j++;
aoqi@0:         }
aoqi@0:         java_index += type2size[t];
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_Base(Base* x) {
aoqi@0:   __ std_entry(LIR_OprFact::illegalOpr);
aoqi@0:   // Emit moves from physical registers / stack slots to virtual registers
aoqi@0:   CallingConvention* args = compilation()->frame_map()->incoming_arguments();
aoqi@0:   IRScope* irScope = compilation()->hir()->top_scope();
aoqi@0:   int java_index = 0;
aoqi@0:   for (int i = 0; i < args->length(); i++) {
aoqi@0:     LIR_Opr src = args->at(i);
aoqi@0:     assert(!src->is_illegal(), "check");
aoqi@0:     BasicType t = src->type();
aoqi@0: 
aoqi@0:     // Types which are smaller than int are passed as int, so
aoqi@0:     // correct the type which passed.
aoqi@0:     switch (t) {
aoqi@0:     case T_BYTE:
aoqi@0:     case T_BOOLEAN:
aoqi@0:     case T_SHORT:
aoqi@0:     case T_CHAR:
aoqi@0:       t = T_INT;
aoqi@0:       break;
aoqi@0:     }
aoqi@0: 
aoqi@0:     LIR_Opr dest = new_register(t);
aoqi@0:     __ move(src, dest);
aoqi@0: 
aoqi@0:     // Assign new location to Local instruction for this local
aoqi@0:     Local* local = x->state()->local_at(java_index)->as_Local();
aoqi@0:     assert(local != NULL, "Locals for incoming arguments must have been created");
aoqi@0: #ifndef __SOFTFP__
aoqi@0:     // The java calling convention passes double as long and float as int.
aoqi@0:     assert(as_ValueType(t)->tag() == local->type()->tag(), "check");
aoqi@0: #endif // __SOFTFP__
aoqi@0:     local->set_operand(dest);
aoqi@0:     _instruction_for_operand.at_put_grow(dest->vreg_number(), local, NULL);
aoqi@0:     java_index += type2size[t];
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (compilation()->env()->dtrace_method_probes()) {
aoqi@0:     BasicTypeList signature;
aoqi@0:     signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT));    // thread
aoqi@0:     signature.append(T_METADATA); // Method*
aoqi@0:     LIR_OprList* args = new LIR_OprList();
aoqi@0:     args->append(getThreadPointer());
aoqi@0:     LIR_Opr meth = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(method()->constant_encoding(), meth);
aoqi@0:     args->append(meth);
aoqi@0:     call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), voidType, NULL);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (method()->is_synchronized()) {
aoqi@0:     LIR_Opr obj;
aoqi@0:     if (method()->is_static()) {
aoqi@0:       obj = new_register(T_OBJECT);
aoqi@0:       __ oop2reg(method()->holder()->java_mirror()->constant_encoding(), obj);
aoqi@0:     } else {
aoqi@0:       Local* receiver = x->state()->local_at(0)->as_Local();
aoqi@0:       assert(receiver != NULL, "must already exist");
aoqi@0:       obj = receiver->operand();
aoqi@0:     }
aoqi@0:     assert(obj->is_valid(), "must be valid");
aoqi@0: 
aoqi@0:     if (method()->is_synchronized() && GenerateSynchronizationCode) {
aoqi@0:       LIR_Opr lock = new_register(T_INT);
aoqi@0:       __ load_stack_address_monitor(0, lock);
aoqi@0: 
aoqi@0:       CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, x->check_flag(Instruction::DeoptimizeOnException));
aoqi@0:       CodeStub* slow_path = new MonitorEnterStub(obj, lock, info);
aoqi@0: 
aoqi@0:       // receiver is guaranteed non-NULL so don't need CodeEmitInfo
aoqi@0:       __ lock_object(syncTempOpr(), obj, lock, new_register(T_OBJECT), slow_path, NULL);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // increment invocation counters if needed
aoqi@0:   if (!method()->is_accessor()) { // Accessors do not have MDOs, so no counting.
aoqi@0:     profile_parameters(x);
aoqi@0:     CodeEmitInfo* info = new CodeEmitInfo(scope()->start()->state()->copy(ValueStack::StateBefore, SynchronizationEntryBCI), NULL, false);
aoqi@0:     increment_invocation_counter(info);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // all blocks with a successor must end with an unconditional jump
aoqi@0:   // to the successor even if they are consecutive
aoqi@0:   __ jump(x->default_sux());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_OsrEntry(OsrEntry* x) {
aoqi@0:   // construct our frame and model the production of incoming pointer
aoqi@0:   // to the OSR buffer.
aoqi@0:   __ osr_entry(LIR_Assembler::osrBufferPointer());
aoqi@0:   LIR_Opr result = rlock_result(x);
aoqi@0:   __ move(LIR_Assembler::osrBufferPointer(), result);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) {
aoqi@0:   assert(args->length() == arg_list->length(),
aoqi@0:          err_msg_res("args=%d, arg_list=%d", args->length(), arg_list->length()));
aoqi@0:   for (int i = x->has_receiver() ? 1 : 0; i < args->length(); i++) {
aoqi@0:     LIRItem* param = args->at(i);
aoqi@0:     LIR_Opr loc = arg_list->at(i);
aoqi@0:     if (loc->is_register()) {
aoqi@0:       param->load_item_force(loc);
aoqi@0:     } else {
aoqi@0:       LIR_Address* addr = loc->as_address_ptr();
aoqi@0:       param->load_for_store(addr->type());
aoqi@0:       if (addr->type() == T_OBJECT) {
aoqi@0:         __ move_wide(param->result(), addr);
aoqi@0:       } else
aoqi@0:         if (addr->type() == T_LONG || addr->type() == T_DOUBLE) {
aoqi@0:           __ unaligned_move(param->result(), addr);
aoqi@0:         } else {
aoqi@0:           __ move(param->result(), addr);
aoqi@0:         }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->has_receiver()) {
aoqi@0:     LIRItem* receiver = args->at(0);
aoqi@0:     LIR_Opr loc = arg_list->at(0);
aoqi@0:     if (loc->is_register()) {
aoqi@0:       receiver->load_item_force(loc);
aoqi@0:     } else {
aoqi@0:       assert(loc->is_address(), "just checking");
aoqi@0:       receiver->load_for_store(T_OBJECT);
aoqi@0:       __ move_wide(receiver->result(), loc->as_address_ptr());
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Visits all arguments, returns appropriate items without loading them
aoqi@0: LIRItemList* LIRGenerator::invoke_visit_arguments(Invoke* x) {
aoqi@0:   LIRItemList* argument_items = new LIRItemList();
aoqi@0:   if (x->has_receiver()) {
aoqi@0:     LIRItem* receiver = new LIRItem(x->receiver(), this);
aoqi@0:     argument_items->append(receiver);
aoqi@0:   }
aoqi@0:   for (int i = 0; i < x->number_of_arguments(); i++) {
aoqi@0:     LIRItem* param = new LIRItem(x->argument_at(i), this);
aoqi@0:     argument_items->append(param);
aoqi@0:   }
aoqi@0:   return argument_items;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // The invoke with receiver has following phases:
aoqi@0: //   a) traverse and load/lock receiver;
aoqi@0: //   b) traverse all arguments -> item-array (invoke_visit_argument)
aoqi@0: //   c) push receiver on stack
aoqi@0: //   d) load each of the items and push on stack
aoqi@0: //   e) unlock receiver
aoqi@0: //   f) move receiver into receiver-register %o0
aoqi@0: //   g) lock result registers and emit call operation
aoqi@0: //
aoqi@0: // Before issuing a call, we must spill-save all values on stack
zmajo@7854: // that are in caller-save register. "spill-save" moves those registers
aoqi@0: // either in a free callee-save register or spills them if no free
aoqi@0: // callee save register is available.
aoqi@0: //
aoqi@0: // The problem is where to invoke spill-save.
aoqi@0: // - if invoked between e) and f), we may lock callee save
aoqi@0: //   register in "spill-save" that destroys the receiver register
aoqi@0: //   before f) is executed
zmajo@7854: // - if we rearrange f) to be earlier (by loading %o0) it
aoqi@0: //   may destroy a value on the stack that is currently in %o0
aoqi@0: //   and is waiting to be spilled
aoqi@0: // - if we keep the receiver locked while doing spill-save,
aoqi@0: //   we cannot spill it as it is spill-locked
aoqi@0: //
aoqi@0: void LIRGenerator::do_Invoke(Invoke* x) {
aoqi@0:   CallingConvention* cc = frame_map()->java_calling_convention(x->signature(), true);
aoqi@0: 
aoqi@0:   LIR_OprList* arg_list = cc->args();
aoqi@0:   LIRItemList* args = invoke_visit_arguments(x);
aoqi@0:   LIR_Opr receiver = LIR_OprFact::illegalOpr;
aoqi@0: 
aoqi@0:   // setup result register
aoqi@0:   LIR_Opr result_register = LIR_OprFact::illegalOpr;
aoqi@0:   if (x->type() != voidType) {
aoqi@0:     result_register = result_register_for(x->type());
aoqi@0:   }
aoqi@0: 
aoqi@0:   CodeEmitInfo* info = state_for(x, x->state());
aoqi@0: 
aoqi@0:   invoke_load_arguments(x, args, arg_list);
aoqi@0: 
aoqi@0:   if (x->has_receiver()) {
aoqi@0:     args->at(0)->load_item_force(LIR_Assembler::receiverOpr());
aoqi@0:     receiver = args->at(0)->result();
aoqi@0:   }
aoqi@0: 
aoqi@0:   // emit invoke code
aoqi@0:   bool optimized = x->target_is_loaded() && x->target_is_final();
aoqi@0:   assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match");
aoqi@0: 
aoqi@0:   // JSR 292
zmajo@7854:   // Preserve the SP over MethodHandle call sites, if needed.
aoqi@0:   ciMethod* target = x->target();
aoqi@0:   bool is_method_handle_invoke = (// %%% FIXME: Are both of these relevant?
aoqi@0:                                   target->is_method_handle_intrinsic() ||
aoqi@0:                                   target->is_compiled_lambda_form());
aoqi@0:   if (is_method_handle_invoke) {
aoqi@0:     info->set_is_method_handle_invoke(true);
zmajo@7854:     if(FrameMap::method_handle_invoke_SP_save_opr() != LIR_OprFact::illegalOpr) {
zmajo@7854:         __ move(FrameMap::stack_pointer(), FrameMap::method_handle_invoke_SP_save_opr());
zmajo@7854:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   switch (x->code()) {
aoqi@0:     case Bytecodes::_invokestatic:
aoqi@0:       __ call_static(target, result_register,
aoqi@0:                      SharedRuntime::get_resolve_static_call_stub(),
aoqi@0:                      arg_list, info);
aoqi@0:       break;
aoqi@0:     case Bytecodes::_invokespecial:
aoqi@0:     case Bytecodes::_invokevirtual:
aoqi@0:     case Bytecodes::_invokeinterface:
aoqi@0:       // for final target we still produce an inline cache, in order
aoqi@0:       // to be able to call mixed mode
aoqi@0:       if (x->code() == Bytecodes::_invokespecial || optimized) {
aoqi@0:         __ call_opt_virtual(target, receiver, result_register,
aoqi@0:                             SharedRuntime::get_resolve_opt_virtual_call_stub(),
aoqi@0:                             arg_list, info);
aoqi@0:       } else if (x->vtable_index() < 0) {
aoqi@0:         __ call_icvirtual(target, receiver, result_register,
aoqi@0:                           SharedRuntime::get_resolve_virtual_call_stub(),
aoqi@0:                           arg_list, info);
aoqi@0:       } else {
aoqi@0:         int entry_offset = InstanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size();
aoqi@0:         int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes();
aoqi@0:         __ call_virtual(target, receiver, result_register, vtable_offset, arg_list, info);
aoqi@0:       }
aoqi@0:       break;
aoqi@0:     case Bytecodes::_invokedynamic: {
aoqi@0:       __ call_dynamic(target, receiver, result_register,
aoqi@0:                       SharedRuntime::get_resolve_static_call_stub(),
aoqi@0:                       arg_list, info);
aoqi@0:       break;
aoqi@0:     }
aoqi@0:     default:
aoqi@0:       fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(x->code())));
aoqi@0:       break;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // JSR 292
zmajo@7854:   // Restore the SP after MethodHandle call sites, if needed.
zmajo@7854:   if (is_method_handle_invoke
zmajo@7854:       && FrameMap::method_handle_invoke_SP_save_opr() != LIR_OprFact::illegalOpr) {
aoqi@0:     __ move(FrameMap::method_handle_invoke_SP_save_opr(), FrameMap::stack_pointer());
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->type()->is_float() || x->type()->is_double()) {
aoqi@0:     // Force rounding of results from non-strictfp when in strictfp
aoqi@0:     // scope (or when we don't know the strictness of the callee, to
aoqi@0:     // be safe.)
aoqi@0:     if (method()->is_strict()) {
aoqi@0:       if (!x->target_is_loaded() || !x->target_is_strictfp()) {
aoqi@0:         result_register = round_item(result_register);
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (result_register->is_valid()) {
aoqi@0:     LIR_Opr result = rlock_result(x);
aoqi@0:     __ move(result_register, result);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void LIRGenerator::do_FPIntrinsics(Intrinsic* x) {
aoqi@0:   assert(x->number_of_arguments() == 1, "wrong type");
aoqi@0:   LIRItem value       (x->argument_at(0), this);
aoqi@0:   LIR_Opr reg = rlock_result(x);
aoqi@0:   value.load_item();
aoqi@0:   LIR_Opr tmp = force_to_spill(value.result(), as_BasicType(x->type()));
aoqi@0:   __ move(tmp, reg);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: // Code for  :  x->x() {x->cond()} x->y() ? x->tval() : x->fval()
aoqi@0: void LIRGenerator::do_IfOp(IfOp* x) {
aoqi@0: #ifdef ASSERT
aoqi@0:   {
aoqi@0:     ValueTag xtag = x->x()->type()->tag();
aoqi@0:     ValueTag ttag = x->tval()->type()->tag();
aoqi@0:     assert(xtag == intTag || xtag == objectTag, "cannot handle others");
aoqi@0:     assert(ttag == addressTag || ttag == intTag || ttag == objectTag || ttag == longTag, "cannot handle others");
aoqi@0:     assert(ttag == x->fval()->type()->tag(), "cannot handle others");
aoqi@0:   }
aoqi@0: #endif
aoqi@0: 
aoqi@0:   LIRItem left(x->x(), this);
aoqi@0:   LIRItem right(x->y(), this);
aoqi@0:   left.load_item();
aoqi@0:   if (can_inline_as_constant(right.value())) {
aoqi@0:     right.dont_load_item();
aoqi@0:   } else {
aoqi@0:     right.load_item();
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIRItem t_val(x->tval(), this);
aoqi@0:   LIRItem f_val(x->fval(), this);
aoqi@0:   t_val.dont_load_item();
aoqi@0:   f_val.dont_load_item();
aoqi@0:   LIR_Opr reg = rlock_result(x);
roland@6668: 
aoqi@1: #ifndef MIPS64
aoqi@0:   __ cmp(lir_cond(x->cond()), left.result(), right.result());
aoqi@0:   __ cmove(lir_cond(x->cond()), t_val.result(), f_val.result(), reg, as_BasicType(x->x()->type()));
aoqi@1: #else
aoqi@1:   LIR_Opr opr1 =  t_val.result();
aoqi@1:   LIR_Opr opr2 =  f_val.result();
aoqi@1:   LabelObj* skip = new LabelObj();
aoqi@1:   __ move(opr1, reg);
aoqi@1:   __ branch(lir_cond(x->cond()), left.result(), right.result(), skip->label());
aoqi@1:   __ move(opr2, reg);
aoqi@1:   __ branch_destination(skip->label());
aoqi@1: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_RuntimeCall(address routine, int expected_arguments, Intrinsic* x) {
aoqi@0:     assert(x->number_of_arguments() == expected_arguments, "wrong type");
aoqi@0:     LIR_Opr reg = result_register_for(x->type());
aoqi@0:     __ call_runtime_leaf(routine, getThreadTemp(),
aoqi@0:                          reg, new LIR_OprList());
aoqi@0:     LIR_Opr result = rlock_result(x);
aoqi@0:     __ move(reg, result);
aoqi@0: }
aoqi@0: 
aoqi@0: #ifdef TRACE_HAVE_INTRINSICS
aoqi@0: void LIRGenerator::do_ThreadIDIntrinsic(Intrinsic* x) {
aoqi@0:     LIR_Opr thread = getThreadPointer();
aoqi@0:     LIR_Opr osthread = new_pointer_register();
aoqi@0:     __ move(new LIR_Address(thread, in_bytes(JavaThread::osthread_offset()), osthread->type()), osthread);
aoqi@0:     size_t thread_id_size = OSThread::thread_id_size();
aoqi@0:     if (thread_id_size == (size_t) BytesPerLong) {
aoqi@0:       LIR_Opr id = new_register(T_LONG);
aoqi@0:       __ move(new LIR_Address(osthread, in_bytes(OSThread::thread_id_offset()), T_LONG), id);
aoqi@0:       __ convert(Bytecodes::_l2i, id, rlock_result(x));
aoqi@0:     } else if (thread_id_size == (size_t) BytesPerInt) {
aoqi@0:       __ move(new LIR_Address(osthread, in_bytes(OSThread::thread_id_offset()), T_INT), rlock_result(x));
aoqi@0:     } else {
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_ClassIDIntrinsic(Intrinsic* x) {
aoqi@0:     CodeEmitInfo* info = state_for(x);
aoqi@0:     CodeEmitInfo* info2 = new CodeEmitInfo(info); // Clone for the second null check
aoqi@0:     BasicType klass_pointer_type = NOT_LP64(T_INT) LP64_ONLY(T_LONG);
aoqi@0:     assert(info != NULL, "must have info");
aoqi@0:     LIRItem arg(x->argument_at(1), this);
aoqi@0:     arg.load_item();
aoqi@0:     LIR_Opr klass = new_pointer_register();
aoqi@0:     __ move(new LIR_Address(arg.result(), java_lang_Class::klass_offset_in_bytes(), klass_pointer_type), klass, info);
aoqi@0:     LIR_Opr id = new_register(T_LONG);
aoqi@0:     ByteSize offset = TRACE_ID_OFFSET;
aoqi@0:     LIR_Address* trace_id_addr = new LIR_Address(klass, in_bytes(offset), T_LONG);
aoqi@0:     __ move(trace_id_addr, id);
aoqi@0:     __ logical_or(id, LIR_OprFact::longConst(0x01l), id);
aoqi@0:     __ store(id, trace_id_addr);
aoqi@0:     __ logical_and(id, LIR_OprFact::longConst(~0x3l), id);
aoqi@0:     __ move(id, rlock_result(x));
aoqi@0: }
aoqi@0: #endif
aoqi@0: 
aoqi@0: void LIRGenerator::do_Intrinsic(Intrinsic* x) {
aoqi@0:   switch (x->id()) {
aoqi@0:   case vmIntrinsics::_intBitsToFloat      :
aoqi@0:   case vmIntrinsics::_doubleToRawLongBits :
aoqi@0:   case vmIntrinsics::_longBitsToDouble    :
aoqi@0:   case vmIntrinsics::_floatToRawIntBits   : {
aoqi@0:     do_FPIntrinsics(x);
aoqi@0:     break;
aoqi@0:   }
aoqi@0: 
aoqi@0: #ifdef TRACE_HAVE_INTRINSICS
aoqi@0:   case vmIntrinsics::_threadID: do_ThreadIDIntrinsic(x); break;
aoqi@0:   case vmIntrinsics::_classID: do_ClassIDIntrinsic(x); break;
aoqi@0:   case vmIntrinsics::_counterTime:
aoqi@0:     do_RuntimeCall(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), 0, x);
aoqi@0:     break;
aoqi@0: #endif
aoqi@0: 
aoqi@0:   case vmIntrinsics::_currentTimeMillis:
aoqi@0:     do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeMillis), 0, x);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_nanoTime:
aoqi@0:     do_RuntimeCall(CAST_FROM_FN_PTR(address, os::javaTimeNanos), 0, x);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_Object_init:    do_RegisterFinalizer(x); break;
aoqi@0:   case vmIntrinsics::_isInstance:     do_isInstance(x);    break;
aoqi@0:   case vmIntrinsics::_getClass:       do_getClass(x);      break;
aoqi@0:   case vmIntrinsics::_currentThread:  do_currentThread(x); break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_dlog:           // fall through
aoqi@0:   case vmIntrinsics::_dlog10:         // fall through
aoqi@0:   case vmIntrinsics::_dabs:           // fall through
aoqi@0:   case vmIntrinsics::_dsqrt:          // fall through
aoqi@0:   case vmIntrinsics::_dtan:           // fall through
aoqi@0:   case vmIntrinsics::_dsin :          // fall through
aoqi@0:   case vmIntrinsics::_dcos :          // fall through
aoqi@0:   case vmIntrinsics::_dexp :          // fall through
aoqi@0:   case vmIntrinsics::_dpow :          do_MathIntrinsic(x); break;
aoqi@0:   case vmIntrinsics::_arraycopy:      do_ArrayCopy(x);     break;
aoqi@0: 
aoqi@0:   // java.nio.Buffer.checkIndex
aoqi@0:   case vmIntrinsics::_checkIndex:     do_NIOCheckIndex(x); break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_compareAndSwapObject:
aoqi@0:     do_CompareAndSwap(x, objectType);
aoqi@0:     break;
aoqi@0:   case vmIntrinsics::_compareAndSwapInt:
aoqi@0:     do_CompareAndSwap(x, intType);
aoqi@0:     break;
aoqi@0:   case vmIntrinsics::_compareAndSwapLong:
aoqi@0:     do_CompareAndSwap(x, longType);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_loadFence :
aoqi@0:     if (os::is_MP()) __ membar_acquire();
aoqi@0:     break;
aoqi@0:   case vmIntrinsics::_storeFence:
aoqi@0:     if (os::is_MP()) __ membar_release();
aoqi@0:     break;
aoqi@0:   case vmIntrinsics::_fullFence :
aoqi@0:     if (os::is_MP()) __ membar();
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_Reference_get:
aoqi@0:     do_Reference_get(x);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case vmIntrinsics::_updateCRC32:
aoqi@0:   case vmIntrinsics::_updateBytesCRC32:
aoqi@0:   case vmIntrinsics::_updateByteBufferCRC32:
aoqi@0:     do_update_CRC32(x);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   default: ShouldNotReachHere(); break;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::profile_arguments(ProfileCall* x) {
aoqi@0:   if (compilation()->profile_arguments()) {
aoqi@0:     int bci = x->bci_of_invoke();
aoqi@0:     ciMethodData* md = x->method()->method_data_or_null();
aoqi@0:     ciProfileData* data = md->bci_to_data(bci);
aoqi@0:     if ((data->is_CallTypeData() && data->as_CallTypeData()->has_arguments()) ||
aoqi@0:         (data->is_VirtualCallTypeData() && data->as_VirtualCallTypeData()->has_arguments())) {
aoqi@0:       ByteSize extra = data->is_CallTypeData() ? CallTypeData::args_data_offset() : VirtualCallTypeData::args_data_offset();
aoqi@0:       int base_offset = md->byte_offset_of_slot(data, extra);
aoqi@0:       LIR_Opr mdp = LIR_OprFact::illegalOpr;
aoqi@0:       ciTypeStackSlotEntries* args = data->is_CallTypeData() ? ((ciCallTypeData*)data)->args() : ((ciVirtualCallTypeData*)data)->args();
aoqi@0: 
aoqi@0:       Bytecodes::Code bc = x->method()->java_code_at_bci(bci);
aoqi@0:       int start = 0;
aoqi@0:       int stop = data->is_CallTypeData() ? ((ciCallTypeData*)data)->number_of_arguments() : ((ciVirtualCallTypeData*)data)->number_of_arguments();
dbuck@8657:       if (x->callee()->is_loaded() && x->callee()->is_static() && Bytecodes::has_receiver(bc)) {
aoqi@0:         // first argument is not profiled at call (method handle invoke)
aoqi@0:         assert(x->method()->raw_code_at_bci(bci) == Bytecodes::_invokehandle, "invokehandle expected");
aoqi@0:         start = 1;
aoqi@0:       }
aoqi@0:       ciSignature* callee_signature = x->callee()->signature();
aoqi@0:       // method handle call to virtual method
dbuck@8657:       bool has_receiver = x->callee()->is_loaded() && !x->callee()->is_static() && !Bytecodes::has_receiver(bc);
aoqi@0:       ciSignatureStream callee_signature_stream(callee_signature, has_receiver ? x->callee()->holder() : NULL);
aoqi@0: 
aoqi@0:       bool ignored_will_link;
aoqi@0:       ciSignature* signature_at_call = NULL;
aoqi@0:       x->method()->get_method_at_bci(bci, ignored_will_link, &signature_at_call);
aoqi@0:       ciSignatureStream signature_at_call_stream(signature_at_call);
aoqi@0: 
aoqi@0:       // if called through method handle invoke, some arguments may have been popped
aoqi@0:       for (int i = 0; i < stop && i+start < x->nb_profiled_args(); i++) {
aoqi@0:         int off = in_bytes(TypeEntriesAtCall::argument_type_offset(i)) - in_bytes(TypeEntriesAtCall::args_data_offset());
aoqi@0:         ciKlass* exact = profile_type(md, base_offset, off,
aoqi@0:                                       args->type(i), x->profiled_arg_at(i+start), mdp,
aoqi@0:                                       !x->arg_needs_null_check(i+start),
aoqi@0:                                       signature_at_call_stream.next_klass(), callee_signature_stream.next_klass());
aoqi@0:         if (exact != NULL) {
aoqi@0:           md->set_argument_type(bci, i, exact);
aoqi@0:         }
aoqi@0:       }
aoqi@0:     } else {
aoqi@0: #ifdef ASSERT
aoqi@0:       Bytecodes::Code code = x->method()->raw_code_at_bci(x->bci_of_invoke());
aoqi@0:       int n = x->nb_profiled_args();
aoqi@0:       assert(MethodData::profile_parameters() && (MethodData::profile_arguments_jsr292_only() ||
aoqi@0:                                                   (x->inlined() && ((code == Bytecodes::_invokedynamic && n <= 1) || (code == Bytecodes::_invokehandle && n <= 2)))),
aoqi@0:              "only at JSR292 bytecodes");
aoqi@0: #endif
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: // profile parameters on entry to an inlined method
aoqi@0: void LIRGenerator::profile_parameters_at_call(ProfileCall* x) {
aoqi@0:   if (compilation()->profile_parameters() && x->inlined()) {
aoqi@0:     ciMethodData* md = x->callee()->method_data_or_null();
aoqi@0:     if (md != NULL) {
aoqi@0:       ciParametersTypeData* parameters_type_data = md->parameters_type_data();
aoqi@0:       if (parameters_type_data != NULL) {
aoqi@0:         ciTypeStackSlotEntries* parameters =  parameters_type_data->parameters();
aoqi@0:         LIR_Opr mdp = LIR_OprFact::illegalOpr;
aoqi@0:         bool has_receiver = !x->callee()->is_static();
aoqi@0:         ciSignature* sig = x->callee()->signature();
aoqi@0:         ciSignatureStream sig_stream(sig, has_receiver ? x->callee()->holder() : NULL);
aoqi@0:         int i = 0; // to iterate on the Instructions
aoqi@0:         Value arg = x->recv();
aoqi@0:         bool not_null = false;
aoqi@0:         int bci = x->bci_of_invoke();
aoqi@0:         Bytecodes::Code bc = x->method()->java_code_at_bci(bci);
aoqi@0:         // The first parameter is the receiver so that's what we start
aoqi@0:         // with if it exists. One exception is method handle call to
aoqi@0:         // virtual method: the receiver is in the args list
aoqi@0:         if (arg == NULL || !Bytecodes::has_receiver(bc)) {
aoqi@0:           i = 1;
aoqi@0:           arg = x->profiled_arg_at(0);
aoqi@0:           not_null = !x->arg_needs_null_check(0);
aoqi@0:         }
aoqi@0:         int k = 0; // to iterate on the profile data
aoqi@0:         for (;;) {
aoqi@0:           intptr_t profiled_k = parameters->type(k);
aoqi@0:           ciKlass* exact = profile_type(md, md->byte_offset_of_slot(parameters_type_data, ParametersTypeData::type_offset(0)),
aoqi@0:                                         in_bytes(ParametersTypeData::type_offset(k)) - in_bytes(ParametersTypeData::type_offset(0)),
aoqi@0:                                         profiled_k, arg, mdp, not_null, sig_stream.next_klass(), NULL);
aoqi@0:           // If the profile is known statically set it once for all and do not emit any code
aoqi@0:           if (exact != NULL) {
aoqi@0:             md->set_parameter_type(k, exact);
aoqi@0:           }
aoqi@0:           k++;
aoqi@0:           if (k >= parameters_type_data->number_of_parameters()) {
aoqi@0: #ifdef ASSERT
aoqi@0:             int extra = 0;
aoqi@0:             if (MethodData::profile_arguments() && TypeProfileParmsLimit != -1 &&
aoqi@0:                 x->nb_profiled_args() >= TypeProfileParmsLimit &&
aoqi@0:                 x->recv() != NULL && Bytecodes::has_receiver(bc)) {
aoqi@0:               extra += 1;
aoqi@0:             }
aoqi@0:             assert(i == x->nb_profiled_args() - extra || (TypeProfileParmsLimit != -1 && TypeProfileArgsLimit > TypeProfileParmsLimit), "unused parameters?");
aoqi@0: #endif
aoqi@0:             break;
aoqi@0:           }
aoqi@0:           arg = x->profiled_arg_at(i);
aoqi@0:           not_null = !x->arg_needs_null_check(i);
aoqi@0:           i++;
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_ProfileCall(ProfileCall* x) {
aoqi@0:   // Need recv in a temporary register so it interferes with the other temporaries
aoqi@0:   LIR_Opr recv = LIR_OprFact::illegalOpr;
aoqi@0:   LIR_Opr mdo = new_register(T_OBJECT);
aoqi@0:   // tmp is used to hold the counters on SPARC
aoqi@0:   LIR_Opr tmp = new_pointer_register();
aoqi@0: 
aoqi@0:   if (x->nb_profiled_args() > 0) {
aoqi@0:     profile_arguments(x);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // profile parameters on inlined method entry including receiver
aoqi@0:   if (x->recv() != NULL || x->nb_profiled_args() > 0) {
aoqi@0:     profile_parameters_at_call(x);
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (x->recv() != NULL) {
aoqi@0:     LIRItem value(x->recv(), this);
aoqi@0:     value.load_item();
aoqi@0:     recv = new_register(T_OBJECT);
aoqi@0:     __ move(value.result(), recv);
aoqi@0:   }
aoqi@0:   __ profile_call(x->method(), x->bci_of_invoke(), x->callee(), mdo, recv, tmp, x->known_holder());
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_ProfileReturnType(ProfileReturnType* x) {
aoqi@0:   int bci = x->bci_of_invoke();
aoqi@0:   ciMethodData* md = x->method()->method_data_or_null();
aoqi@0:   ciProfileData* data = md->bci_to_data(bci);
aoqi@0:   assert(data->is_CallTypeData() || data->is_VirtualCallTypeData(), "wrong profile data type");
aoqi@0:   ciReturnTypeEntry* ret = data->is_CallTypeData() ? ((ciCallTypeData*)data)->ret() : ((ciVirtualCallTypeData*)data)->ret();
aoqi@0:   LIR_Opr mdp = LIR_OprFact::illegalOpr;
aoqi@0: 
aoqi@0:   bool ignored_will_link;
aoqi@0:   ciSignature* signature_at_call = NULL;
aoqi@0:   x->method()->get_method_at_bci(bci, ignored_will_link, &signature_at_call);
aoqi@0: 
aoqi@0:   // The offset within the MDO of the entry to update may be too large
aoqi@0:   // to be used in load/store instructions on some platforms. So have
aoqi@0:   // profile_type() compute the address of the profile in a register.
aoqi@0:   ciKlass* exact = profile_type(md, md->byte_offset_of_slot(data, ret->type_offset()), 0,
aoqi@0:                                 ret->type(), x->ret(), mdp,
aoqi@0:                                 !x->needs_null_check(),
aoqi@0:                                 signature_at_call->return_type()->as_klass(),
aoqi@0:                                 x->callee()->signature()->return_type()->as_klass());
aoqi@0:   if (exact != NULL) {
aoqi@0:     md->set_return_type(bci, exact);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) {
aoqi@0:   // We can safely ignore accessors here, since c2 will inline them anyway,
aoqi@0:   // accessors are also always mature.
aoqi@0:   if (!x->inlinee()->is_accessor()) {
aoqi@0:     CodeEmitInfo* info = state_for(x, x->state(), true);
aoqi@0:     // Notify the runtime very infrequently only to take care of counter overflows
aoqi@0:     increment_event_counter_impl(info, x->inlinee(), (1 << Tier23InlineeNotifyFreqLog) - 1, InvocationEntryBci, false, true);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::increment_event_counter(CodeEmitInfo* info, int bci, bool backedge) {
csahu@8316:   int freq_log = 0;
aoqi@0:   int level = compilation()->env()->comp_level();
aoqi@0:   if (level == CompLevel_limited_profile) {
aoqi@0:     freq_log = (backedge ? Tier2BackedgeNotifyFreqLog : Tier2InvokeNotifyFreqLog);
aoqi@0:   } else if (level == CompLevel_full_profile) {
aoqi@0:     freq_log = (backedge ? Tier3BackedgeNotifyFreqLog : Tier3InvokeNotifyFreqLog);
aoqi@0:   } else {
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0:   // Increment the appropriate invocation/backedge counter and notify the runtime.
aoqi@0:   increment_event_counter_impl(info, info->scope()->method(), (1 << freq_log) - 1, bci, backedge, true);
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::increment_event_counter_impl(CodeEmitInfo* info,
aoqi@0:                                                 ciMethod *method, int frequency,
aoqi@0:                                                 int bci, bool backedge, bool notify) {
aoqi@0:   assert(frequency == 0 || is_power_of_2(frequency + 1), "Frequency must be x^2 - 1 or 0");
aoqi@0:   int level = _compilation->env()->comp_level();
aoqi@0:   assert(level > CompLevel_simple, "Shouldn't be here");
aoqi@0: 
aoqi@0:   int offset = -1;
csahu@8316:   LIR_Opr counter_holder = NULL;
aoqi@0:   if (level == CompLevel_limited_profile) {
aoqi@0:     MethodCounters* counters_adr = method->ensure_method_counters();
aoqi@0:     if (counters_adr == NULL) {
aoqi@0:       bailout("method counters allocation failed");
aoqi@0:       return;
aoqi@0:     }
aoqi@0:     counter_holder = new_pointer_register();
aoqi@0:     __ move(LIR_OprFact::intptrConst(counters_adr), counter_holder);
aoqi@0:     offset = in_bytes(backedge ? MethodCounters::backedge_counter_offset() :
aoqi@0:                                  MethodCounters::invocation_counter_offset());
aoqi@0:   } else if (level == CompLevel_full_profile) {
aoqi@0:     counter_holder = new_register(T_METADATA);
aoqi@0:     offset = in_bytes(backedge ? MethodData::backedge_counter_offset() :
aoqi@0:                                  MethodData::invocation_counter_offset());
aoqi@0:     ciMethodData* md = method->method_data_or_null();
aoqi@0:     assert(md != NULL, "Sanity");
aoqi@0:     __ metadata2reg(md->constant_encoding(), counter_holder);
aoqi@0:   } else {
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0:   LIR_Address* counter = new LIR_Address(counter_holder, offset, T_INT);
aoqi@0:   LIR_Opr result = new_register(T_INT);
aoqi@0:   __ load(counter, result);
aoqi@0:   __ add(result, LIR_OprFact::intConst(InvocationCounter::count_increment), result);
aoqi@0:   __ store(result, counter);
aoqi@0:   if (notify) {
aoqi@0:     LIR_Opr mask = load_immediate(frequency << InvocationCounter::count_shift, T_INT);
aoqi@0:     LIR_Opr meth = new_register(T_METADATA);
aoqi@0:     __ metadata2reg(method->constant_encoding(), meth);
aoqi@0:     __ logical_and(result, mask, result);
aoqi@1: #ifndef MIPS64
aoqi@0:     __ cmp(lir_cond_equal, result, LIR_OprFact::intConst(0));
aoqi@1: #endif
aoqi@0:     // The bci for info can point to cmp for if's we want the if bci
aoqi@0:     CodeStub* overflow = new CounterOverflowStub(info, bci, meth);
aoqi@1: #ifndef MIPS64
aoqi@0:     __ branch(lir_cond_equal, T_INT, overflow);
aoqi@1: #else
aoqi@1:     __ branch(lir_cond_equal, result, LIR_OprFact::intConst(0), T_INT, overflow);
aoqi@1: #endif
aoqi@0:     __ branch_destination(overflow->continuation());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_RuntimeCall(RuntimeCall* x) {
aoqi@0:   LIR_OprList* args = new LIR_OprList(x->number_of_arguments());
aoqi@0:   BasicTypeList* signature = new BasicTypeList(x->number_of_arguments());
aoqi@0: 
aoqi@0:   if (x->pass_thread()) {
aoqi@0:     signature->append(LP64_ONLY(T_LONG) NOT_LP64(T_INT));    // thread
aoqi@0:     args->append(getThreadPointer());
aoqi@0:   }
aoqi@0: 
aoqi@0:   for (int i = 0; i < x->number_of_arguments(); i++) {
aoqi@0:     Value a = x->argument_at(i);
aoqi@0:     LIRItem* item = new LIRItem(a, this);
aoqi@0:     item->load_item();
aoqi@0:     args->append(item->result());
aoqi@0:     signature->append(as_BasicType(a->type()));
aoqi@0:   }
aoqi@0: 
aoqi@0:   LIR_Opr result = call_runtime(signature, args, x->entry(), x->type(), NULL);
aoqi@0:   if (x->type() == voidType) {
aoqi@0:     set_no_result(x);
aoqi@0:   } else {
aoqi@0:     __ move(result, rlock_result(x));
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: void LIRGenerator::do_Assert(Assert *x) {
aoqi@0:   ValueTag tag = x->x()->type()->tag();
aoqi@0:   If::Condition cond = x->cond();
aoqi@0: 
aoqi@0:   LIRItem xitem(x->x(), this);
aoqi@0:   LIRItem yitem(x->y(), this);
aoqi@0:   LIRItem* xin = &xitem;
aoqi@0:   LIRItem* yin = &yitem;
aoqi@0: 
aoqi@0:   assert(tag == intTag, "Only integer assertions are valid!");
aoqi@0: 
aoqi@0:   xin->load_item();
aoqi@0:   yin->dont_load_item();
aoqi@0: 
aoqi@0:   set_no_result(x);
aoqi@0: 
aoqi@0:   LIR_Opr left = xin->result();
aoqi@0:   LIR_Opr right = yin->result();
aoqi@0: 
aoqi@0:   __ lir_assert(lir_cond(x->cond()), left, right, x->message(), true);
aoqi@0: }
aoqi@0: #endif
aoqi@0: 
aoqi@0: void LIRGenerator::do_RangeCheckPredicate(RangeCheckPredicate *x) {
aoqi@0: 
aoqi@0: 
aoqi@0:   Instruction *a = x->x();
aoqi@0:   Instruction *b = x->y();
aoqi@0:   if (!a || StressRangeCheckElimination) {
aoqi@0:     assert(!b || StressRangeCheckElimination, "B must also be null");
aoqi@0: 
aoqi@0:     CodeEmitInfo *info = state_for(x, x->state());
aoqi@0:     CodeStub* stub = new PredicateFailedStub(info);
aoqi@0: 
aoqi@0:     __ jump(stub);
aoqi@0:   } else if (a->type()->as_IntConstant() && b->type()->as_IntConstant()) {
aoqi@0:     int a_int = a->type()->as_IntConstant()->value();
aoqi@0:     int b_int = b->type()->as_IntConstant()->value();
aoqi@0: 
aoqi@0:     bool ok = false;
aoqi@0: 
aoqi@0:     switch(x->cond()) {
aoqi@0:       case Instruction::eql: ok = (a_int == b_int); break;
aoqi@0:       case Instruction::neq: ok = (a_int != b_int); break;
aoqi@0:       case Instruction::lss: ok = (a_int < b_int); break;
aoqi@0:       case Instruction::leq: ok = (a_int <= b_int); break;
aoqi@0:       case Instruction::gtr: ok = (a_int > b_int); break;
aoqi@0:       case Instruction::geq: ok = (a_int >= b_int); break;
aoqi@0:       case Instruction::aeq: ok = ((unsigned int)a_int >= (unsigned int)b_int); break;
aoqi@0:       case Instruction::beq: ok = ((unsigned int)a_int <= (unsigned int)b_int); break;
aoqi@0:       default: ShouldNotReachHere();
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (ok) {
aoqi@0: 
aoqi@0:       CodeEmitInfo *info = state_for(x, x->state());
aoqi@0:       CodeStub* stub = new PredicateFailedStub(info);
aoqi@0: 
aoqi@0:       __ jump(stub);
aoqi@0:     }
aoqi@0:   } else {
aoqi@0: 
aoqi@0:     ValueTag tag = x->x()->type()->tag();
aoqi@0:     If::Condition cond = x->cond();
aoqi@0:     LIRItem xitem(x->x(), this);
aoqi@0:     LIRItem yitem(x->y(), this);
aoqi@0:     LIRItem* xin = &xitem;
aoqi@0:     LIRItem* yin = &yitem;
aoqi@0: 
aoqi@0:     assert(tag == intTag, "Only integer deoptimizations are valid!");
aoqi@0: 
aoqi@0:     xin->load_item();
aoqi@0:     yin->dont_load_item();
aoqi@0:     set_no_result(x);
aoqi@0: 
aoqi@0:     LIR_Opr left = xin->result();
aoqi@0:     LIR_Opr right = yin->result();
aoqi@0: 
aoqi@0:     CodeEmitInfo *info = state_for(x, x->state());
aoqi@0:     CodeStub* stub = new PredicateFailedStub(info);
aoqi@0: 
aoqi@1: #ifndef MIPS64
aoqi@0:     __ cmp(lir_cond(cond), left, right);
aoqi@0:     __ branch(lir_cond(cond), right->type(), stub);
aoqi@1: #else
aoqi@1:     tty->print_cr("LIRGenerator::do_RangeCheckPredicate(RangeCheckPredicate *x) unimplemented yet!");
aoqi@1:     Unimplemented();
aoqi@1: #endif
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::call_runtime(Value arg1, address entry, ValueType* result_type, CodeEmitInfo* info) {
aoqi@0:   LIRItemList args(1);
aoqi@0:   LIRItem value(arg1, this);
aoqi@0:   args.append(&value);
aoqi@0:   BasicTypeList signature;
aoqi@0:   signature.append(as_BasicType(arg1->type()));
aoqi@0: 
aoqi@0:   return call_runtime(&signature, &args, entry, result_type, info);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::call_runtime(Value arg1, Value arg2, address entry, ValueType* result_type, CodeEmitInfo* info) {
aoqi@0:   LIRItemList args(2);
aoqi@0:   LIRItem value1(arg1, this);
aoqi@0:   LIRItem value2(arg2, this);
aoqi@0:   args.append(&value1);
aoqi@0:   args.append(&value2);
aoqi@0:   BasicTypeList signature;
aoqi@0:   signature.append(as_BasicType(arg1->type()));
aoqi@0:   signature.append(as_BasicType(arg2->type()));
aoqi@0: 
aoqi@0:   return call_runtime(&signature, &args, entry, result_type, info);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIR_OprList* args,
aoqi@0:                                    address entry, ValueType* result_type, CodeEmitInfo* info) {
aoqi@0:   // get a result register
aoqi@0:   LIR_Opr phys_reg = LIR_OprFact::illegalOpr;
aoqi@0:   LIR_Opr result = LIR_OprFact::illegalOpr;
aoqi@0:   if (result_type->tag() != voidTag) {
aoqi@0:     result = new_register(result_type);
aoqi@0:     phys_reg = result_register_for(result_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // move the arguments into the correct location
aoqi@0:   CallingConvention* cc = frame_map()->c_calling_convention(signature);
aoqi@0:   assert(cc->length() == args->length(), "argument mismatch");
aoqi@0:   for (int i = 0; i < args->length(); i++) {
aoqi@0:     LIR_Opr arg = args->at(i);
aoqi@0:     LIR_Opr loc = cc->at(i);
aoqi@0:     if (loc->is_register()) {
aoqi@0:       __ move(arg, loc);
aoqi@0:     } else {
aoqi@0:       LIR_Address* addr = loc->as_address_ptr();
aoqi@0: //           if (!can_store_as_constant(arg)) {
aoqi@0: //             LIR_Opr tmp = new_register(arg->type());
aoqi@0: //             __ move(arg, tmp);
aoqi@0: //             arg = tmp;
aoqi@0: //           }
aoqi@0:       if (addr->type() == T_LONG || addr->type() == T_DOUBLE) {
aoqi@0:         __ unaligned_move(arg, addr);
aoqi@0:       } else {
aoqi@0:         __ move(arg, addr);
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (info) {
aoqi@0:     __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info);
aoqi@0:   } else {
aoqi@0:     __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args());
aoqi@0:   }
aoqi@0:   if (result->is_valid()) {
aoqi@0:     __ move(phys_reg, result);
aoqi@0:   }
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr LIRGenerator::call_runtime(BasicTypeArray* signature, LIRItemList* args,
aoqi@0:                                    address entry, ValueType* result_type, CodeEmitInfo* info) {
aoqi@0:   // get a result register
aoqi@0:   LIR_Opr phys_reg = LIR_OprFact::illegalOpr;
aoqi@0:   LIR_Opr result = LIR_OprFact::illegalOpr;
aoqi@0:   if (result_type->tag() != voidTag) {
aoqi@0:     result = new_register(result_type);
aoqi@0:     phys_reg = result_register_for(result_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // move the arguments into the correct location
aoqi@0:   CallingConvention* cc = frame_map()->c_calling_convention(signature);
aoqi@0: 
aoqi@0:   assert(cc->length() == args->length(), "argument mismatch");
aoqi@0:   for (int i = 0; i < args->length(); i++) {
aoqi@0:     LIRItem* arg = args->at(i);
aoqi@0:     LIR_Opr loc = cc->at(i);
aoqi@0:     if (loc->is_register()) {
aoqi@0:       arg->load_item_force(loc);
aoqi@0:     } else {
aoqi@0:       LIR_Address* addr = loc->as_address_ptr();
aoqi@0:       arg->load_for_store(addr->type());
aoqi@0:       if (addr->type() == T_LONG || addr->type() == T_DOUBLE) {
aoqi@0:         __ unaligned_move(arg->result(), addr);
aoqi@0:       } else {
aoqi@0:         __ move(arg->result(), addr);
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (info) {
aoqi@0:     __ call_runtime(entry, getThreadTemp(), phys_reg, cc->args(), info);
aoqi@0:   } else {
aoqi@0:     __ call_runtime_leaf(entry, getThreadTemp(), phys_reg, cc->args());
aoqi@0:   }
aoqi@0:   if (result->is_valid()) {
aoqi@0:     __ move(phys_reg, result);
aoqi@0:   }
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: void LIRGenerator::do_MemBar(MemBar* x) {
aoqi@0:   if (os::is_MP()) {
aoqi@0:     LIR_Code code = x->code();
aoqi@0:     switch(code) {
aoqi@0:       case lir_membar_acquire   : __ membar_acquire(); break;
aoqi@0:       case lir_membar_release   : __ membar_release(); break;
aoqi@0:       case lir_membar           : __ membar(); break;
aoqi@0:       case lir_membar_loadload  : __ membar_loadload(); break;
aoqi@0:       case lir_membar_storestore: __ membar_storestore(); break;
aoqi@0:       case lir_membar_loadstore : __ membar_loadstore(); break;
aoqi@0:       case lir_membar_storeload : __ membar_storeload(); break;
aoqi@0:       default                   : ShouldNotReachHere(); break;
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
kevinw@8368: 
kevinw@8368: LIR_Opr LIRGenerator::maybe_mask_boolean(StoreIndexed* x, LIR_Opr array, LIR_Opr value, CodeEmitInfo*& null_check_info) {
kevinw@8368:   if (x->check_boolean()) {
kevinw@8368:     LIR_Opr value_fixed = rlock_byte(T_BYTE);
kevinw@8368:     if (TwoOperandLIRForm) {
kevinw@8368:       __ move(value, value_fixed);
kevinw@8368:       __ logical_and(value_fixed, LIR_OprFact::intConst(1), value_fixed);
kevinw@8368:     } else {
kevinw@8368:       __ logical_and(value, LIR_OprFact::intConst(1), value_fixed);
kevinw@8368:     }
kevinw@8368:     LIR_Opr klass = new_register(T_METADATA);
kevinw@8368:     __ move(new LIR_Address(array, oopDesc::klass_offset_in_bytes(), T_ADDRESS), klass, null_check_info);
kevinw@8368:     null_check_info = NULL;
kevinw@8368:     LIR_Opr layout = new_register(T_INT);
kevinw@8368:     __ move(new LIR_Address(klass, in_bytes(Klass::layout_helper_offset()), T_INT), layout);
kevinw@8368:     int diffbit = Klass::layout_helper_boolean_diffbit();
kevinw@8368:     __ logical_and(layout, LIR_OprFact::intConst(diffbit), layout);
kevinw@8368:     __ cmp(lir_cond_notEqual, layout, LIR_OprFact::intConst(0));
kevinw@8368:     __ cmove(lir_cond_notEqual, value_fixed, value, value_fixed, T_BYTE);
kevinw@8368:     value = value_fixed;
kevinw@8368:   }
kevinw@8368:   return value;
kevinw@8368: }