duke@435: /*
xdono@631:  * Copyright 2005-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: # include "incls/_precompiled.incl"
duke@435: # include "incls/_c1_LIRGenerator_sparc.cpp.incl"
duke@435: 
duke@435: #ifdef ASSERT
duke@435: #define __ gen()->lir(__FILE__, __LINE__)->
duke@435: #else
duke@435: #define __ gen()->lir()->
duke@435: #endif
duke@435: 
duke@435: void LIRItem::load_byte_item() {
duke@435:   // byte loads use same registers as other loads
duke@435:   load_item();
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRItem::load_nonconstant() {
duke@435:   LIR_Opr r = value()->operand();
duke@435:   if (_gen->can_inline_as_constant(value())) {
duke@435:     if (!r->is_constant()) {
duke@435:       r = LIR_OprFact::value_type(value()->type());
duke@435:     }
duke@435:     _result = r;
duke@435:   } else {
duke@435:     load_item();
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: //--------------------------------------------------------------
duke@435: //               LIRGenerator
duke@435: //--------------------------------------------------------------
duke@435: 
duke@435: LIR_Opr LIRGenerator::exceptionOopOpr()              { return FrameMap::Oexception_opr;  }
duke@435: LIR_Opr LIRGenerator::exceptionPcOpr()               { return FrameMap::Oissuing_pc_opr; }
duke@435: LIR_Opr LIRGenerator::syncTempOpr()                  { return new_register(T_OBJECT); }
duke@435: LIR_Opr LIRGenerator::getThreadTemp()                { return rlock_callee_saved(T_INT); }
duke@435: 
duke@435: LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) {
duke@435:   LIR_Opr opr;
duke@435:   switch (type->tag()) {
duke@435:   case intTag:     opr = callee ? FrameMap::I0_opr      : FrameMap::O0_opr;       break;
duke@435:   case objectTag:  opr = callee ? FrameMap::I0_oop_opr  : FrameMap::O0_oop_opr;   break;
duke@435:   case longTag:    opr = callee ? FrameMap::in_long_opr : FrameMap::out_long_opr; break;
duke@435:   case floatTag:   opr = FrameMap::F0_opr;                                        break;
duke@435:   case doubleTag:  opr = FrameMap::F0_double_opr;                                 break;
duke@435: 
duke@435:   case addressTag:
duke@435:   default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr;
duke@435:   }
duke@435: 
duke@435:   assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch");
duke@435:   return opr;
duke@435: }
duke@435: 
duke@435: LIR_Opr LIRGenerator::rlock_callee_saved(BasicType type) {
duke@435:   LIR_Opr reg = new_register(type);
duke@435:   set_vreg_flag(reg, callee_saved);
duke@435:   return reg;
duke@435: }
duke@435: 
duke@435: 
duke@435: LIR_Opr LIRGenerator::rlock_byte(BasicType type) {
duke@435:   return new_register(T_INT);
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: //--------- loading items into registers --------------------------------
duke@435: 
duke@435: // SPARC cannot inline all constants
duke@435: bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const {
duke@435:   if (v->type()->as_IntConstant() != NULL) {
duke@435:     return v->type()->as_IntConstant()->value() == 0;
duke@435:   } else if (v->type()->as_LongConstant() != NULL) {
duke@435:     return v->type()->as_LongConstant()->value() == 0L;
duke@435:   } else if (v->type()->as_ObjectConstant() != NULL) {
duke@435:     return v->type()->as_ObjectConstant()->value()->is_null_object();
duke@435:   } else {
duke@435:     return false;
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: // only simm13 constants can be inlined
duke@435: bool LIRGenerator:: can_inline_as_constant(Value i) const {
duke@435:   if (i->type()->as_IntConstant() != NULL) {
duke@435:     return Assembler::is_simm13(i->type()->as_IntConstant()->value());
duke@435:   } else {
duke@435:     return can_store_as_constant(i, as_BasicType(i->type()));
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: bool LIRGenerator:: can_inline_as_constant(LIR_Const* c) const {
duke@435:   if (c->type() == T_INT) {
duke@435:     return Assembler::is_simm13(c->as_jint());
duke@435:   }
duke@435:   return false;
duke@435: }
duke@435: 
duke@435: 
duke@435: LIR_Opr LIRGenerator::safepoint_poll_register() {
duke@435:   return new_register(T_INT);
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
duke@435:                                             int shift, int disp, BasicType type) {
duke@435:   assert(base->is_register(), "must be");
duke@435: 
duke@435:   // accumulate fixed displacements
duke@435:   if (index->is_constant()) {
duke@435:     disp += index->as_constant_ptr()->as_jint() << shift;
duke@435:     index = LIR_OprFact::illegalOpr;
duke@435:   }
duke@435: 
duke@435:   if (index->is_register()) {
duke@435:     // apply the shift and accumulate the displacement
duke@435:     if (shift > 0) {
duke@435:       LIR_Opr tmp = new_register(T_INT);
duke@435:       __ shift_left(index, shift, tmp);
duke@435:       index = tmp;
duke@435:     }
duke@435:     if (disp != 0) {
duke@435:       LIR_Opr tmp = new_register(T_INT);
duke@435:       if (Assembler::is_simm13(disp)) {
duke@435:         __ add(tmp, LIR_OprFact::intConst(disp), tmp);
duke@435:         index = tmp;
duke@435:       } else {
duke@435:         __ move(LIR_OprFact::intConst(disp), tmp);
duke@435:         __ add(tmp, index, tmp);
duke@435:         index = tmp;
duke@435:       }
duke@435:       disp = 0;
duke@435:     }
duke@435:   } else if (disp != 0 && !Assembler::is_simm13(disp)) {
duke@435:     // index is illegal so replace it with the displacement loaded into a register
duke@435:     index = new_register(T_INT);
duke@435:     __ move(LIR_OprFact::intConst(disp), index);
duke@435:     disp = 0;
duke@435:   }
duke@435: 
duke@435:   // at this point we either have base + index or base + displacement
duke@435:   if (disp == 0) {
duke@435:     return new LIR_Address(base, index, type);
duke@435:   } else {
duke@435:     assert(Assembler::is_simm13(disp), "must be");
duke@435:     return new LIR_Address(base, disp, type);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr,
duke@435:                                               BasicType type, bool needs_card_mark) {
kvn@464:   int elem_size = type2aelembytes(type);
duke@435:   int shift = exact_log2(elem_size);
duke@435: 
duke@435:   LIR_Opr base_opr;
duke@435:   int offset = arrayOopDesc::base_offset_in_bytes(type);
duke@435: 
duke@435:   if (index_opr->is_constant()) {
duke@435:     int i = index_opr->as_constant_ptr()->as_jint();
duke@435:     int array_offset = i * elem_size;
duke@435:     if (Assembler::is_simm13(array_offset + offset)) {
duke@435:       base_opr = array_opr;
duke@435:       offset = array_offset + offset;
duke@435:     } else {
duke@435:       base_opr = new_pointer_register();
duke@435:       if (Assembler::is_simm13(array_offset)) {
duke@435:         __ add(array_opr, LIR_OprFact::intptrConst(array_offset), base_opr);
duke@435:       } else {
duke@435:         __ move(LIR_OprFact::intptrConst(array_offset), base_opr);
duke@435:         __ add(base_opr, array_opr, base_opr);
duke@435:       }
duke@435:     }
duke@435:   } else {
duke@435: #ifdef _LP64
duke@435:     if (index_opr->type() == T_INT) {
duke@435:       LIR_Opr tmp = new_register(T_LONG);
duke@435:       __ convert(Bytecodes::_i2l, index_opr, tmp);
duke@435:       index_opr = tmp;
duke@435:     }
duke@435: #endif
duke@435: 
duke@435:     base_opr = new_pointer_register();
duke@435:     assert (index_opr->is_register(), "Must be register");
duke@435:     if (shift > 0) {
duke@435:       __ shift_left(index_opr, shift, base_opr);
duke@435:       __ add(base_opr, array_opr, base_opr);
duke@435:     } else {
duke@435:       __ add(index_opr, array_opr, base_opr);
duke@435:     }
duke@435:   }
duke@435:   if (needs_card_mark) {
duke@435:     LIR_Opr ptr = new_pointer_register();
duke@435:     __ add(base_opr, LIR_OprFact::intptrConst(offset), ptr);
duke@435:     return new LIR_Address(ptr, 0, type);
duke@435:   } else {
duke@435:     return new LIR_Address(base_opr, offset, type);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::increment_counter(address counter, int step) {
duke@435:   LIR_Opr pointer = new_pointer_register();
duke@435:   __ move(LIR_OprFact::intptrConst(counter), pointer);
duke@435:   LIR_Address* addr = new LIR_Address(pointer, 0, T_INT);
duke@435:   increment_counter(addr, step);
duke@435: }
duke@435: 
duke@435: void LIRGenerator::increment_counter(LIR_Address* addr, int step) {
duke@435:   LIR_Opr temp = new_register(T_INT);
duke@435:   __ move(addr, temp);
duke@435:   LIR_Opr c = LIR_OprFact::intConst(step);
duke@435:   if (Assembler::is_simm13(step)) {
duke@435:     __ add(temp, c, temp);
duke@435:   } else {
duke@435:     LIR_Opr temp2 = new_register(T_INT);
duke@435:     __ move(c, temp2);
duke@435:     __ add(temp, temp2, temp);
duke@435:   }
duke@435:   __ move(temp, addr);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) {
duke@435:   LIR_Opr o7opr = FrameMap::O7_opr;
duke@435:   __ load(new LIR_Address(base, disp, T_INT), o7opr, info);
duke@435:   __ cmp(condition, o7opr, c);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) {
duke@435:   LIR_Opr o7opr = FrameMap::O7_opr;
duke@435:   __ load(new LIR_Address(base, disp, type), o7opr, info);
duke@435:   __ cmp(condition, reg, o7opr);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, LIR_Opr disp, BasicType type, CodeEmitInfo* info) {
duke@435:   LIR_Opr o7opr = FrameMap::O7_opr;
duke@435:   __ load(new LIR_Address(base, disp, type), o7opr, info);
duke@435:   __ cmp(condition, reg, o7opr);
duke@435: }
duke@435: 
duke@435: 
duke@435: bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) {
duke@435:   assert(left != result, "should be different registers");
duke@435:   if (is_power_of_2(c + 1)) {
duke@435:     __ shift_left(left, log2_intptr(c + 1), result);
duke@435:     __ sub(result, left, result);
duke@435:     return true;
duke@435:   } else if (is_power_of_2(c - 1)) {
duke@435:     __ shift_left(left, log2_intptr(c - 1), result);
duke@435:     __ add(result, left, result);
duke@435:     return true;
duke@435:   }
duke@435:   return false;
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::store_stack_parameter (LIR_Opr item, ByteSize offset_from_sp) {
duke@435:   BasicType t = item->type();
duke@435:   LIR_Opr sp_opr = FrameMap::SP_opr;
duke@435:   if ((t == T_LONG || t == T_DOUBLE) &&
duke@435:       ((in_bytes(offset_from_sp) - STACK_BIAS) % 8 != 0)) {
duke@435:     __ unaligned_move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t));
duke@435:   } else {
duke@435:     __ move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t));
duke@435:   }
duke@435: }
duke@435: 
duke@435: //----------------------------------------------------------------------
duke@435: //             visitor functions
duke@435: //----------------------------------------------------------------------
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_StoreIndexed(StoreIndexed* x) {
duke@435:   assert(x->is_root(),"");
duke@435:   bool needs_range_check = true;
duke@435:   bool use_length = x->length() != NULL;
duke@435:   bool obj_store = x->elt_type() == T_ARRAY || x->elt_type() == T_OBJECT;
duke@435:   bool needs_store_check = obj_store && (x->value()->as_Constant() == NULL ||
duke@435:                                          !get_jobject_constant(x->value())->is_null_object());
duke@435: 
duke@435:   LIRItem array(x->array(), this);
duke@435:   LIRItem index(x->index(), this);
duke@435:   LIRItem value(x->value(), this);
duke@435:   LIRItem length(this);
duke@435: 
duke@435:   array.load_item();
duke@435:   index.load_nonconstant();
duke@435: 
duke@435:   if (use_length) {
duke@435:     needs_range_check = x->compute_needs_range_check();
duke@435:     if (needs_range_check) {
duke@435:       length.set_instruction(x->length());
duke@435:       length.load_item();
duke@435:     }
duke@435:   }
duke@435:   if (needs_store_check) {
duke@435:     value.load_item();
duke@435:   } else {
duke@435:     value.load_for_store(x->elt_type());
duke@435:   }
duke@435: 
duke@435:   set_no_result(x);
duke@435: 
duke@435:   // the CodeEmitInfo must be duplicated for each different
duke@435:   // LIR-instruction because spilling can occur anywhere between two
duke@435:   // instructions and so the debug information must be different
duke@435:   CodeEmitInfo* range_check_info = state_for(x);
duke@435:   CodeEmitInfo* null_check_info = NULL;
duke@435:   if (x->needs_null_check()) {
duke@435:     null_check_info = new CodeEmitInfo(range_check_info);
duke@435:   }
duke@435: 
duke@435:   // emit array address setup early so it schedules better
duke@435:   LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store);
duke@435: 
duke@435:   if (GenerateRangeChecks && needs_range_check) {
duke@435:     if (use_length) {
duke@435:       __ cmp(lir_cond_belowEqual, length.result(), index.result());
duke@435:       __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result()));
duke@435:     } else {
duke@435:       array_range_check(array.result(), index.result(), null_check_info, range_check_info);
duke@435:       // range_check also does the null check
duke@435:       null_check_info = NULL;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   if (GenerateArrayStoreCheck && needs_store_check) {
duke@435:     LIR_Opr tmp1 = FrameMap::G1_opr;
duke@435:     LIR_Opr tmp2 = FrameMap::G3_opr;
duke@435:     LIR_Opr tmp3 = FrameMap::G5_opr;
duke@435: 
duke@435:     CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info);
duke@435:     __ store_check(value.result(), array.result(), tmp1, tmp2, tmp3, store_check_info);
duke@435:   }
duke@435: 
ysr@777:   if (obj_store) {
ysr@777:     // Needs GC write barriers.
ysr@777:     pre_barrier(LIR_OprFact::address(array_addr), false, NULL);
ysr@777:   }
duke@435:   __ move(value.result(), array_addr, null_check_info);
duke@435:   if (obj_store) {
never@1254:     // Precise card mark
duke@435:     post_barrier(LIR_OprFact::address(array_addr), value.result());
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_MonitorEnter(MonitorEnter* x) {
duke@435:   assert(x->is_root(),"");
duke@435:   LIRItem obj(x->obj(), this);
duke@435:   obj.load_item();
duke@435: 
duke@435:   set_no_result(x);
duke@435: 
duke@435:   LIR_Opr lock    = FrameMap::G1_opr;
duke@435:   LIR_Opr scratch = FrameMap::G3_opr;
duke@435:   LIR_Opr hdr     = FrameMap::G4_opr;
duke@435: 
duke@435:   CodeEmitInfo* info_for_exception = NULL;
duke@435:   if (x->needs_null_check()) {
duke@435:     info_for_exception = state_for(x, x->lock_stack_before());
duke@435:   }
duke@435: 
duke@435:   // this CodeEmitInfo must not have the xhandlers because here the
duke@435:   // object is already locked (xhandlers expects object to be unlocked)
duke@435:   CodeEmitInfo* info = state_for(x, x->state(), true);
duke@435:   monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_MonitorExit(MonitorExit* x) {
duke@435:   assert(x->is_root(),"");
duke@435:   LIRItem obj(x->obj(), this);
duke@435:   obj.dont_load_item();
duke@435: 
duke@435:   set_no_result(x);
duke@435:   LIR_Opr lock      = FrameMap::G1_opr;
duke@435:   LIR_Opr hdr       = FrameMap::G3_opr;
duke@435:   LIR_Opr obj_temp  = FrameMap::G4_opr;
duke@435:   monitor_exit(obj_temp, lock, hdr, x->monitor_no());
duke@435: }
duke@435: 
duke@435: 
duke@435: // _ineg, _lneg, _fneg, _dneg
duke@435: void LIRGenerator::do_NegateOp(NegateOp* x) {
duke@435:   LIRItem value(x->x(), this);
duke@435:   value.load_item();
duke@435:   LIR_Opr reg = rlock_result(x);
duke@435:   __ negate(value.result(), reg);
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: // for  _fadd, _fmul, _fsub, _fdiv, _frem
duke@435: //      _dadd, _dmul, _dsub, _ddiv, _drem
duke@435: void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) {
duke@435:   switch (x->op()) {
duke@435:   case Bytecodes::_fadd:
duke@435:   case Bytecodes::_fmul:
duke@435:   case Bytecodes::_fsub:
duke@435:   case Bytecodes::_fdiv:
duke@435:   case Bytecodes::_dadd:
duke@435:   case Bytecodes::_dmul:
duke@435:   case Bytecodes::_dsub:
duke@435:   case Bytecodes::_ddiv: {
duke@435:     LIRItem left(x->x(), this);
duke@435:     LIRItem right(x->y(), this);
duke@435:     left.load_item();
duke@435:     right.load_item();
duke@435:     rlock_result(x);
duke@435:     arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp());
duke@435:   }
duke@435:   break;
duke@435: 
duke@435:   case Bytecodes::_frem:
duke@435:   case Bytecodes::_drem: {
duke@435:     address entry;
duke@435:     switch (x->op()) {
duke@435:     case Bytecodes::_frem:
duke@435:       entry = CAST_FROM_FN_PTR(address, SharedRuntime::frem);
duke@435:       break;
duke@435:     case Bytecodes::_drem:
duke@435:       entry = CAST_FROM_FN_PTR(address, SharedRuntime::drem);
duke@435:       break;
duke@435:     default:
duke@435:       ShouldNotReachHere();
duke@435:     }
duke@435:     LIR_Opr result = call_runtime(x->x(), x->y(), entry, x->type(), NULL);
duke@435:     set_result(x, result);
duke@435:   }
duke@435:   break;
duke@435: 
duke@435:   default: ShouldNotReachHere();
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: // for  _ladd, _lmul, _lsub, _ldiv, _lrem
duke@435: void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) {
duke@435:   switch (x->op()) {
duke@435:   case Bytecodes::_lrem:
duke@435:   case Bytecodes::_lmul:
duke@435:   case Bytecodes::_ldiv: {
duke@435: 
duke@435:     if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) {
duke@435:       LIRItem right(x->y(), this);
duke@435:       right.load_item();
duke@435: 
duke@435:       CodeEmitInfo* info = state_for(x);
duke@435:       LIR_Opr item = right.result();
duke@435:       assert(item->is_register(), "must be");
duke@435:       __ cmp(lir_cond_equal, item, LIR_OprFact::longConst(0));
duke@435:       __ branch(lir_cond_equal, T_LONG, new DivByZeroStub(info));
duke@435:     }
duke@435: 
duke@435:     address entry;
duke@435:     switch (x->op()) {
duke@435:     case Bytecodes::_lrem:
duke@435:       entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem);
duke@435:       break; // check if dividend is 0 is done elsewhere
duke@435:     case Bytecodes::_ldiv:
duke@435:       entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv);
duke@435:       break; // check if dividend is 0 is done elsewhere
duke@435:     case Bytecodes::_lmul:
duke@435:       entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul);
duke@435:       break;
duke@435:     default:
duke@435:       ShouldNotReachHere();
duke@435:     }
duke@435: 
duke@435:     // order of arguments to runtime call is reversed.
duke@435:     LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL);
duke@435:     set_result(x, result);
duke@435:     break;
duke@435:   }
duke@435:   case Bytecodes::_ladd:
duke@435:   case Bytecodes::_lsub: {
duke@435:     LIRItem left(x->x(), this);
duke@435:     LIRItem right(x->y(), this);
duke@435:     left.load_item();
duke@435:     right.load_item();
duke@435:     rlock_result(x);
duke@435: 
duke@435:     arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL);
duke@435:     break;
duke@435:   }
duke@435:   default: ShouldNotReachHere();
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: // Returns if item is an int constant that can be represented by a simm13
duke@435: static bool is_simm13(LIR_Opr item) {
duke@435:   if (item->is_constant() && item->type() == T_INT) {
duke@435:     return Assembler::is_simm13(item->as_constant_ptr()->as_jint());
duke@435:   } else {
duke@435:     return false;
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: // for: _iadd, _imul, _isub, _idiv, _irem
duke@435: void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) {
duke@435:   bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem;
duke@435:   LIRItem left(x->x(), this);
duke@435:   LIRItem right(x->y(), this);
duke@435:   // missing test if instr is commutative and if we should swap
duke@435:   right.load_nonconstant();
duke@435:   assert(right.is_constant() || right.is_register(), "wrong state of right");
duke@435:   left.load_item();
duke@435:   rlock_result(x);
duke@435:   if (is_div_rem) {
duke@435:     CodeEmitInfo* info = state_for(x);
duke@435:     LIR_Opr tmp = FrameMap::G1_opr;
duke@435:     if (x->op() == Bytecodes::_irem) {
duke@435:       __ irem(left.result(), right.result(), x->operand(), tmp, info);
duke@435:     } else if (x->op() == Bytecodes::_idiv) {
duke@435:       __ idiv(left.result(), right.result(), x->operand(), tmp, info);
duke@435:     }
duke@435:   } else {
duke@435:     arithmetic_op_int(x->op(), x->operand(), left.result(), right.result(), FrameMap::G1_opr);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) {
duke@435:   ValueTag tag = x->type()->tag();
duke@435:   assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters");
duke@435:   switch (tag) {
duke@435:     case floatTag:
duke@435:     case doubleTag:  do_ArithmeticOp_FPU(x);  return;
duke@435:     case longTag:    do_ArithmeticOp_Long(x); return;
duke@435:     case intTag:     do_ArithmeticOp_Int(x);  return;
duke@435:   }
duke@435:   ShouldNotReachHere();
duke@435: }
duke@435: 
duke@435: 
duke@435: // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr
duke@435: void LIRGenerator::do_ShiftOp(ShiftOp* x) {
duke@435:   LIRItem value(x->x(), this);
duke@435:   LIRItem count(x->y(), this);
duke@435:   // Long shift destroys count register
duke@435:   if (value.type()->is_long()) {
duke@435:     count.set_destroys_register();
duke@435:   }
duke@435:   value.load_item();
duke@435:   // the old backend doesn't support this
duke@435:   if (count.is_constant() && count.type()->as_IntConstant() != NULL && value.type()->is_int()) {
duke@435:     jint c = count.get_jint_constant() & 0x1f;
duke@435:     assert(c >= 0 && c < 32, "should be small");
duke@435:     count.dont_load_item();
duke@435:   } else {
duke@435:     count.load_item();
duke@435:   }
duke@435:   LIR_Opr reg = rlock_result(x);
duke@435:   shift_op(x->op(), reg, value.result(), count.result(), LIR_OprFact::illegalOpr);
duke@435: }
duke@435: 
duke@435: 
duke@435: // _iand, _land, _ior, _lor, _ixor, _lxor
duke@435: void LIRGenerator::do_LogicOp(LogicOp* x) {
duke@435:   LIRItem left(x->x(), this);
duke@435:   LIRItem right(x->y(), this);
duke@435: 
duke@435:   left.load_item();
duke@435:   right.load_nonconstant();
duke@435:   LIR_Opr reg = rlock_result(x);
duke@435: 
duke@435:   logic_op(x->op(), reg, left.result(), right.result());
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg
duke@435: void LIRGenerator::do_CompareOp(CompareOp* x) {
duke@435:   LIRItem left(x->x(), this);
duke@435:   LIRItem right(x->y(), this);
duke@435:   left.load_item();
duke@435:   right.load_item();
duke@435:   LIR_Opr reg = rlock_result(x);
duke@435: 
duke@435:   if (x->x()->type()->is_float_kind()) {
duke@435:     Bytecodes::Code code = x->op();
duke@435:     __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl));
duke@435:   } else if (x->x()->type()->tag() == longTag) {
duke@435:     __ lcmp2int(left.result(), right.result(), reg);
duke@435:   } else {
duke@435:     Unimplemented();
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_AttemptUpdate(Intrinsic* x) {
duke@435:   assert(x->number_of_arguments() == 3, "wrong type");
duke@435:   LIRItem obj       (x->argument_at(0), this);  // AtomicLong object
duke@435:   LIRItem cmp_value (x->argument_at(1), this);  // value to compare with field
duke@435:   LIRItem new_value (x->argument_at(2), this);  // replace field with new_value if it matches cmp_value
duke@435: 
duke@435:   obj.load_item();
duke@435:   cmp_value.load_item();
duke@435:   new_value.load_item();
duke@435: 
duke@435:   // generate compare-and-swap and produce zero condition if swap occurs
duke@435:   int value_offset = sun_misc_AtomicLongCSImpl::value_offset();
duke@435:   LIR_Opr addr = FrameMap::O7_opr;
duke@435:   __ add(obj.result(), LIR_OprFact::intConst(value_offset), addr);
duke@435:   LIR_Opr t1 = FrameMap::G1_opr;  // temp for 64-bit value
duke@435:   LIR_Opr t2 = FrameMap::G3_opr;  // temp for 64-bit value
duke@435:   __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2);
duke@435: 
duke@435:   // generate conditional move of boolean result
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) {
duke@435:   assert(x->number_of_arguments() == 4, "wrong type");
duke@435:   LIRItem obj   (x->argument_at(0), this);  // object
duke@435:   LIRItem offset(x->argument_at(1), this);  // offset of field
duke@435:   LIRItem cmp   (x->argument_at(2), this);  // value to compare with field
duke@435:   LIRItem val   (x->argument_at(3), this);  // replace field with val if matches cmp
duke@435: 
duke@435:   // Use temps to avoid kills
duke@435:   LIR_Opr t1 = FrameMap::G1_opr;
duke@435:   LIR_Opr t2 = FrameMap::G3_opr;
duke@435:   LIR_Opr addr = new_pointer_register();
duke@435: 
duke@435:   // get address of field
duke@435:   obj.load_item();
duke@435:   offset.load_item();
duke@435:   cmp.load_item();
duke@435:   val.load_item();
duke@435: 
duke@435:   __ add(obj.result(), offset.result(), addr);
duke@435: 
ysr@777:   if (type == objectType) {  // Write-barrier needed for Object fields.
ysr@777:     pre_barrier(obj.result(), false, NULL);
ysr@777:   }
ysr@777: 
duke@435:   if (type == objectType)
duke@435:     __ cas_obj(addr, cmp.result(), val.result(), t1, t2);
duke@435:   else if (type == intType)
duke@435:     __ cas_int(addr, cmp.result(), val.result(), t1, t2);
duke@435:   else if (type == longType)
duke@435:     __ cas_long(addr, cmp.result(), val.result(), t1, t2);
duke@435:   else {
duke@435:     ShouldNotReachHere();
duke@435:   }
duke@435: 
duke@435:   // generate conditional move of boolean result
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result);
duke@435:   if (type == objectType) {  // Write-barrier needed for Object fields.
never@1254:     // Precise card mark since could either be object or array
ysr@777:     post_barrier(addr, val.result());
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_MathIntrinsic(Intrinsic* x) {
duke@435:   switch (x->id()) {
duke@435:     case vmIntrinsics::_dabs:
duke@435:     case vmIntrinsics::_dsqrt: {
duke@435:       assert(x->number_of_arguments() == 1, "wrong type");
duke@435:       LIRItem value(x->argument_at(0), this);
duke@435:       value.load_item();
duke@435:       LIR_Opr dst = rlock_result(x);
duke@435: 
duke@435:       switch (x->id()) {
duke@435:       case vmIntrinsics::_dsqrt: {
duke@435:         __ sqrt(value.result(), dst, LIR_OprFact::illegalOpr);
duke@435:         break;
duke@435:       }
duke@435:       case vmIntrinsics::_dabs: {
duke@435:         __ abs(value.result(), dst, LIR_OprFact::illegalOpr);
duke@435:         break;
duke@435:       }
duke@435:       }
duke@435:       break;
duke@435:     }
duke@435:     case vmIntrinsics::_dlog10: // fall through
duke@435:     case vmIntrinsics::_dlog: // fall through
duke@435:     case vmIntrinsics::_dsin: // fall through
duke@435:     case vmIntrinsics::_dtan: // fall through
duke@435:     case vmIntrinsics::_dcos: {
duke@435:       assert(x->number_of_arguments() == 1, "wrong type");
duke@435: 
duke@435:       address runtime_entry = NULL;
duke@435:       switch (x->id()) {
duke@435:       case vmIntrinsics::_dsin:
duke@435:         runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dsin);
duke@435:         break;
duke@435:       case vmIntrinsics::_dcos:
duke@435:         runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dcos);
duke@435:         break;
duke@435:       case vmIntrinsics::_dtan:
duke@435:         runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dtan);
duke@435:         break;
duke@435:       case vmIntrinsics::_dlog:
duke@435:         runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog);
duke@435:         break;
duke@435:       case vmIntrinsics::_dlog10:
duke@435:         runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10);
duke@435:         break;
duke@435:       default:
duke@435:         ShouldNotReachHere();
duke@435:       }
duke@435: 
duke@435:       LIR_Opr result = call_runtime(x->argument_at(0), runtime_entry, x->type(), NULL);
duke@435:       set_result(x, result);
duke@435:     }
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_ArrayCopy(Intrinsic* x) {
duke@435:   assert(x->number_of_arguments() == 5, "wrong type");
duke@435:   // Note: spill caller save before setting the item
duke@435:   LIRItem src     (x->argument_at(0), this);
duke@435:   LIRItem src_pos (x->argument_at(1), this);
duke@435:   LIRItem dst     (x->argument_at(2), this);
duke@435:   LIRItem dst_pos (x->argument_at(3), this);
duke@435:   LIRItem length  (x->argument_at(4), this);
duke@435:   // load all values in callee_save_registers, as this makes the
duke@435:   // parameter passing to the fast case simpler
duke@435:   src.load_item_force     (rlock_callee_saved(T_OBJECT));
duke@435:   src_pos.load_item_force (rlock_callee_saved(T_INT));
duke@435:   dst.load_item_force     (rlock_callee_saved(T_OBJECT));
duke@435:   dst_pos.load_item_force (rlock_callee_saved(T_INT));
duke@435:   length.load_item_force  (rlock_callee_saved(T_INT));
duke@435: 
duke@435:   int flags;
duke@435:   ciArrayKlass* expected_type;
duke@435:   arraycopy_helper(x, &flags, &expected_type);
duke@435: 
duke@435:   CodeEmitInfo* info = state_for(x, x->state());
duke@435:   __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(),
duke@435:                length.result(), rlock_callee_saved(T_INT),
duke@435:                expected_type, flags, info);
duke@435:   set_no_result(x);
duke@435: }
duke@435: 
duke@435: // _i2l, _i2f, _i2d, _l2i, _l2f, _l2d, _f2i, _f2l, _f2d, _d2i, _d2l, _d2f
duke@435: // _i2b, _i2c, _i2s
duke@435: void LIRGenerator::do_Convert(Convert* x) {
duke@435: 
duke@435:   switch (x->op()) {
duke@435:     case Bytecodes::_f2l:
duke@435:     case Bytecodes::_d2l:
duke@435:     case Bytecodes::_d2i:
duke@435:     case Bytecodes::_l2f:
duke@435:     case Bytecodes::_l2d: {
duke@435: 
duke@435:       address entry;
duke@435:       switch (x->op()) {
duke@435:       case Bytecodes::_l2f:
duke@435:         entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2f);
duke@435:         break;
duke@435:       case Bytecodes::_l2d:
duke@435:         entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2d);
duke@435:         break;
duke@435:       case Bytecodes::_f2l:
duke@435:         entry = CAST_FROM_FN_PTR(address, SharedRuntime::f2l);
duke@435:         break;
duke@435:       case Bytecodes::_d2l:
duke@435:         entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2l);
duke@435:         break;
duke@435:       case Bytecodes::_d2i:
duke@435:         entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2i);
duke@435:         break;
duke@435:       default:
duke@435:         ShouldNotReachHere();
duke@435:       }
duke@435:       LIR_Opr result = call_runtime(x->value(), entry, x->type(), NULL);
duke@435:       set_result(x, result);
duke@435:       break;
duke@435:     }
duke@435: 
duke@435:     case Bytecodes::_i2f:
duke@435:     case Bytecodes::_i2d: {
duke@435:       LIRItem value(x->value(), this);
duke@435: 
duke@435:       LIR_Opr reg = rlock_result(x);
duke@435:       // To convert an int to double, we need to load the 32-bit int
duke@435:       // from memory into a single precision floating point register
duke@435:       // (even numbered). Then the sparc fitod instruction takes care
duke@435:       // of the conversion. This is a bit ugly, but is the best way to
duke@435:       // get the int value in a single precision floating point register
duke@435:       value.load_item();
duke@435:       LIR_Opr tmp = force_to_spill(value.result(), T_FLOAT);
duke@435:       __ convert(x->op(), tmp, reg);
duke@435:       break;
duke@435:     }
duke@435:     break;
duke@435: 
duke@435:     case Bytecodes::_i2l:
duke@435:     case Bytecodes::_i2b:
duke@435:     case Bytecodes::_i2c:
duke@435:     case Bytecodes::_i2s:
duke@435:     case Bytecodes::_l2i:
duke@435:     case Bytecodes::_f2d:
duke@435:     case Bytecodes::_d2f: { // inline code
duke@435:       LIRItem value(x->value(), this);
duke@435: 
duke@435:       value.load_item();
duke@435:       LIR_Opr reg = rlock_result(x);
duke@435:       __ convert(x->op(), value.result(), reg, false);
duke@435:     }
duke@435:     break;
duke@435: 
duke@435:     case Bytecodes::_f2i: {
duke@435:       LIRItem value (x->value(), this);
duke@435:       value.set_destroys_register();
duke@435:       value.load_item();
duke@435:       LIR_Opr reg = rlock_result(x);
duke@435:       set_vreg_flag(reg, must_start_in_memory);
duke@435:       __ convert(x->op(), value.result(), reg, false);
duke@435:     }
duke@435:     break;
duke@435: 
duke@435:     default: ShouldNotReachHere();
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_NewInstance(NewInstance* x) {
duke@435:   // This instruction can be deoptimized in the slow path : use
duke@435:   // O0 as result register.
duke@435:   const LIR_Opr reg = result_register_for(x->type());
duke@435: 
duke@435:   if (PrintNotLoaded && !x->klass()->is_loaded()) {
duke@435:     tty->print_cr("   ###class not loaded at new bci %d", x->bci());
duke@435:   }
duke@435:   CodeEmitInfo* info = state_for(x, x->state());
duke@435:   LIR_Opr tmp1 = FrameMap::G1_oop_opr;
duke@435:   LIR_Opr tmp2 = FrameMap::G3_oop_opr;
duke@435:   LIR_Opr tmp3 = FrameMap::G4_oop_opr;
duke@435:   LIR_Opr tmp4 = FrameMap::O1_oop_opr;
duke@435:   LIR_Opr klass_reg = FrameMap::G5_oop_opr;
duke@435:   new_instance(reg, x->klass(), tmp1, tmp2, tmp3, tmp4, klass_reg, info);
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ move(reg, result);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_NewTypeArray(NewTypeArray* x) {
duke@435:   LIRItem length(x->length(), this);
duke@435:   length.load_item();
duke@435: 
duke@435:   LIR_Opr reg = result_register_for(x->type());
duke@435:   LIR_Opr tmp1 = FrameMap::G1_oop_opr;
duke@435:   LIR_Opr tmp2 = FrameMap::G3_oop_opr;
duke@435:   LIR_Opr tmp3 = FrameMap::G4_oop_opr;
duke@435:   LIR_Opr tmp4 = FrameMap::O1_oop_opr;
duke@435:   LIR_Opr klass_reg = FrameMap::G5_oop_opr;
duke@435:   LIR_Opr len = length.result();
duke@435:   BasicType elem_type = x->elt_type();
duke@435: 
duke@435:   __ oop2reg(ciTypeArrayKlass::make(elem_type)->encoding(), klass_reg);
duke@435: 
duke@435:   CodeEmitInfo* info = state_for(x, x->state());
duke@435:   CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info);
duke@435:   __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path);
duke@435: 
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ move(reg, result);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_NewObjectArray(NewObjectArray* x) {
duke@435:   LIRItem length(x->length(), this);
duke@435:   // in case of patching (i.e., object class is not yet loaded), we need to reexecute the instruction
duke@435:   // and therefore provide the state before the parameters have been consumed
duke@435:   CodeEmitInfo* patching_info = NULL;
duke@435:   if (!x->klass()->is_loaded() || PatchALot) {
duke@435:     patching_info = state_for(x, x->state_before());
duke@435:   }
duke@435: 
duke@435:   length.load_item();
duke@435: 
duke@435:   const LIR_Opr reg = result_register_for(x->type());
duke@435:   LIR_Opr tmp1 = FrameMap::G1_oop_opr;
duke@435:   LIR_Opr tmp2 = FrameMap::G3_oop_opr;
duke@435:   LIR_Opr tmp3 = FrameMap::G4_oop_opr;
duke@435:   LIR_Opr tmp4 = FrameMap::O1_oop_opr;
duke@435:   LIR_Opr klass_reg = FrameMap::G5_oop_opr;
duke@435:   LIR_Opr len = length.result();
duke@435:   CodeEmitInfo* info = state_for(x, x->state());
duke@435: 
duke@435:   CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info);
duke@435:   ciObject* obj = (ciObject*) ciObjArrayKlass::make(x->klass());
duke@435:   if (obj == ciEnv::unloaded_ciobjarrayklass()) {
duke@435:     BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error");
duke@435:   }
duke@435:   jobject2reg_with_patching(klass_reg, obj, patching_info);
duke@435:   __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path);
duke@435: 
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ move(reg, result);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_NewMultiArray(NewMultiArray* x) {
duke@435:   Values* dims = x->dims();
duke@435:   int i = dims->length();
duke@435:   LIRItemList* items = new LIRItemList(dims->length(), NULL);
duke@435:   while (i-- > 0) {
duke@435:     LIRItem* size = new LIRItem(dims->at(i), this);
duke@435:     items->at_put(i, size);
duke@435:   }
duke@435: 
duke@435:   // need to get the info before, as the items may become invalid through item_free
duke@435:   CodeEmitInfo* patching_info = NULL;
duke@435:   if (!x->klass()->is_loaded() || PatchALot) {
duke@435:     patching_info = state_for(x, x->state_before());
duke@435: 
duke@435:     // cannot re-use same xhandlers for multiple CodeEmitInfos, so
duke@435:     // clone all handlers
duke@435:     x->set_exception_handlers(new XHandlers(x->exception_handlers()));
duke@435:   }
duke@435: 
duke@435:   i = dims->length();
duke@435:   while (i-- > 0) {
duke@435:     LIRItem* size = items->at(i);
duke@435:     // if a patching_info was generated above then debug information for the state before
duke@435:     // the call is going to be emitted.  The LIRGenerator calls above may have left some values
duke@435:     // in registers and that's been recorded in the CodeEmitInfo.  In that case the items
duke@435:     // for those values can't simply be freed if they are registers because the values
duke@435:     // might be destroyed by store_stack_parameter.  So in the case of patching, delay the
duke@435:     // freeing of the items that already were in registers
duke@435:     size->load_item();
duke@435:     store_stack_parameter (size->result(),
duke@435:                            in_ByteSize(STACK_BIAS +
never@739:                                        frame::memory_parameter_word_sp_offset * wordSize +
never@739:                                        i * sizeof(jint)));
duke@435:   }
duke@435: 
duke@435:   // This instruction can be deoptimized in the slow path : use
duke@435:   // O0 as result register.
duke@435:   const LIR_Opr reg = result_register_for(x->type());
duke@435:   CodeEmitInfo* info = state_for(x, x->state());
duke@435: 
duke@435:   jobject2reg_with_patching(reg, x->klass(), patching_info);
duke@435:   LIR_Opr rank = FrameMap::O1_opr;
duke@435:   __ move(LIR_OprFact::intConst(x->rank()), rank);
duke@435:   LIR_Opr varargs = FrameMap::as_pointer_opr(O2);
duke@435:   int offset_from_sp = (frame::memory_parameter_word_sp_offset * wordSize) + STACK_BIAS;
duke@435:   __ add(FrameMap::SP_opr,
duke@435:          LIR_OprFact::intptrConst(offset_from_sp),
duke@435:          varargs);
duke@435:   LIR_OprList* args = new LIR_OprList(3);
duke@435:   args->append(reg);
duke@435:   args->append(rank);
duke@435:   args->append(varargs);
duke@435:   __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id),
duke@435:                   LIR_OprFact::illegalOpr,
duke@435:                   reg, args, info);
duke@435: 
duke@435:   LIR_Opr result = rlock_result(x);
duke@435:   __ move(reg, result);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_BlockBegin(BlockBegin* x) {
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_CheckCast(CheckCast* x) {
duke@435:   LIRItem obj(x->obj(), this);
duke@435:   CodeEmitInfo* patching_info = NULL;
duke@435:   if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) {
duke@435:     // must do this before locking the destination register as an oop register,
duke@435:     // and before the obj is loaded (so x->obj()->item() is valid for creating a debug info location)
duke@435:     patching_info = state_for(x, x->state_before());
duke@435:   }
duke@435:   obj.load_item();
duke@435:   LIR_Opr out_reg = rlock_result(x);
duke@435:   CodeStub* stub;
duke@435:   CodeEmitInfo* info_for_exception = state_for(x, x->state()->copy_locks());
duke@435: 
duke@435:   if (x->is_incompatible_class_change_check()) {
duke@435:     assert(patching_info == NULL, "can't patch this");
duke@435:     stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, LIR_OprFact::illegalOpr, info_for_exception);
duke@435:   } else {
duke@435:     stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception);
duke@435:   }
duke@435:   LIR_Opr tmp1 = FrameMap::G1_oop_opr;
duke@435:   LIR_Opr tmp2 = FrameMap::G3_oop_opr;
duke@435:   LIR_Opr tmp3 = FrameMap::G4_oop_opr;
duke@435:   __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3,
duke@435:                x->direct_compare(), info_for_exception, patching_info, stub,
duke@435:                x->profiled_method(), x->profiled_bci());
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_InstanceOf(InstanceOf* x) {
duke@435:   LIRItem obj(x->obj(), this);
duke@435:   CodeEmitInfo* patching_info = NULL;
duke@435:   if (!x->klass()->is_loaded() || PatchALot) {
duke@435:     patching_info = state_for(x, x->state_before());
duke@435:   }
duke@435:   // ensure the result register is not the input register because the result is initialized before the patching safepoint
duke@435:   obj.load_item();
duke@435:   LIR_Opr out_reg = rlock_result(x);
duke@435:   LIR_Opr tmp1 = FrameMap::G1_oop_opr;
duke@435:   LIR_Opr tmp2 = FrameMap::G3_oop_opr;
duke@435:   LIR_Opr tmp3 = FrameMap::G4_oop_opr;
duke@435:   __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3,  x->direct_compare(), patching_info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::do_If(If* x) {
duke@435:   assert(x->number_of_sux() == 2, "inconsistency");
duke@435:   ValueTag tag = x->x()->type()->tag();
duke@435:   LIRItem xitem(x->x(), this);
duke@435:   LIRItem yitem(x->y(), this);
duke@435:   LIRItem* xin = &xitem;
duke@435:   LIRItem* yin = &yitem;
duke@435:   If::Condition cond = x->cond();
duke@435: 
duke@435:   if (tag == longTag) {
duke@435:     // for longs, only conditions "eql", "neq", "lss", "geq" are valid;
duke@435:     // mirror for other conditions
duke@435:     if (cond == If::gtr || cond == If::leq) {
duke@435:       // swap inputs
duke@435:       cond = Instruction::mirror(cond);
duke@435:       xin = &yitem;
duke@435:       yin = &xitem;
duke@435:     }
duke@435:     xin->set_destroys_register();
duke@435:   }
duke@435: 
duke@435:   LIR_Opr left = LIR_OprFact::illegalOpr;
duke@435:   LIR_Opr right = LIR_OprFact::illegalOpr;
duke@435: 
duke@435:   xin->load_item();
duke@435:   left = xin->result();
duke@435: 
duke@435:   if (is_simm13(yin->result())) {
duke@435:     // inline int constants which are small enough to be immediate operands
duke@435:     right = LIR_OprFact::value_type(yin->value()->type());
duke@435:   } else if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 &&
duke@435:              (cond == If::eql || cond == If::neq)) {
duke@435:     // inline long zero
duke@435:     right = LIR_OprFact::value_type(yin->value()->type());
duke@435:   } else if (tag == objectTag && yin->is_constant() && (yin->get_jobject_constant()->is_null_object())) {
duke@435:     right = LIR_OprFact::value_type(yin->value()->type());
duke@435:   } else {
duke@435:     yin->load_item();
duke@435:     right = yin->result();
duke@435:   }
duke@435:   set_no_result(x);
duke@435: 
duke@435:   // add safepoint before generating condition code so it can be recomputed
duke@435:   if (x->is_safepoint()) {
duke@435:     // increment backedge counter if needed
duke@435:     increment_backedge_counter(state_for(x, x->state_before()));
duke@435: 
duke@435:     __ safepoint(new_register(T_INT), state_for(x, x->state_before()));
duke@435:   }
duke@435: 
duke@435:   __ cmp(lir_cond(cond), left, right);
duke@435:   profile_branch(x, cond);
duke@435:   move_to_phi(x->state());
duke@435:   if (x->x()->type()->is_float_kind()) {
duke@435:     __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux());
duke@435:   } else {
duke@435:     __ branch(lir_cond(cond), right->type(), x->tsux());
duke@435:   }
duke@435:   assert(x->default_sux() == x->fsux(), "wrong destination above");
duke@435:   __ jump(x->default_sux());
duke@435: }
duke@435: 
duke@435: 
duke@435: LIR_Opr LIRGenerator::getThreadPointer() {
duke@435:   return FrameMap::as_pointer_opr(G2);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::trace_block_entry(BlockBegin* block) {
duke@435:   __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::O0_opr);
duke@435:   LIR_OprList* args = new LIR_OprList(1);
duke@435:   args->append(FrameMap::O0_opr);
duke@435:   address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry);
duke@435:   __ call_runtime_leaf(func, rlock_callee_saved(T_INT), LIR_OprFact::illegalOpr, args);
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address,
duke@435:                                         CodeEmitInfo* info) {
duke@435: #ifdef _LP64
duke@435:   __ store(value, address, info);
duke@435: #else
duke@435:   __ volatile_store_mem_reg(value, address, info);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result,
duke@435:                                        CodeEmitInfo* info) {
duke@435: #ifdef _LP64
duke@435:   __ load(address, result, info);
duke@435: #else
duke@435:   __ volatile_load_mem_reg(address, result, info);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data,
duke@435:                                      BasicType type, bool is_volatile) {
duke@435:   LIR_Opr base_op = src;
duke@435:   LIR_Opr index_op = offset;
duke@435: 
duke@435:   bool is_obj = (type == T_ARRAY || type == T_OBJECT);
duke@435: #ifndef _LP64
duke@435:   if (is_volatile && type == T_LONG) {
duke@435:     __ volatile_store_unsafe_reg(data, src, offset, type, NULL, lir_patch_none);
duke@435:   } else
duke@435: #endif
duke@435:     {
duke@435:       if (type == T_BOOLEAN) {
duke@435:         type = T_BYTE;
duke@435:       }
duke@435:       LIR_Address* addr;
duke@435:       if (type == T_ARRAY || type == T_OBJECT) {
duke@435:         LIR_Opr tmp = new_pointer_register();
duke@435:         __ add(base_op, index_op, tmp);
duke@435:         addr = new LIR_Address(tmp, 0, type);
duke@435:       } else {
duke@435:         addr = new LIR_Address(base_op, index_op, type);
duke@435:       }
duke@435: 
ysr@777:       if (is_obj) {
ysr@777:         pre_barrier(LIR_OprFact::address(addr), false, NULL);
ysr@777:         // _bs->c1_write_barrier_pre(this, LIR_OprFact::address(addr));
ysr@777:       }
duke@435:       __ move(data, addr);
duke@435:       if (is_obj) {
duke@435:         // This address is precise
duke@435:         post_barrier(LIR_OprFact::address(addr), data);
duke@435:       }
duke@435:     }
duke@435: }
duke@435: 
duke@435: 
duke@435: void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset,
duke@435:                                      BasicType type, bool is_volatile) {
duke@435: #ifndef _LP64
duke@435:   if (is_volatile && type == T_LONG) {
duke@435:     __ volatile_load_unsafe_reg(src, offset, dst, type, NULL, lir_patch_none);
duke@435:   } else
duke@435: #endif
duke@435:     {
duke@435:     LIR_Address* addr = new LIR_Address(src, offset, type);
duke@435:     __ load(addr, dst);
duke@435:   }
duke@435: }