--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1176 @@
+/*
+ * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_c1_LIRGenerator_sparc.cpp.incl"
+
+#ifdef ASSERT
+#define __ gen()->lir(__FILE__, __LINE__)->
+#else
+#define __ gen()->lir()->
+#endif
+
+void LIRItem::load_byte_item() {
+  // byte loads use same registers as other loads
+  load_item();
+}
+
+
+void LIRItem::load_nonconstant() {
+  LIR_Opr r = value()->operand();
+  if (_gen->can_inline_as_constant(value())) {
+    if (!r->is_constant()) {
+      r = LIR_OprFact::value_type(value()->type());
+    }
+    _result = r;
+  } else {
+    load_item();
+  }
+}
+
+
+//--------------------------------------------------------------
+//               LIRGenerator
+//--------------------------------------------------------------
+
+LIR_Opr LIRGenerator::exceptionOopOpr()              { return FrameMap::Oexception_opr;  }
+LIR_Opr LIRGenerator::exceptionPcOpr()               { return FrameMap::Oissuing_pc_opr; }
+LIR_Opr LIRGenerator::syncTempOpr()                  { return new_register(T_OBJECT); }
+LIR_Opr LIRGenerator::getThreadTemp()                { return rlock_callee_saved(T_INT); }
+
+LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) {
+  LIR_Opr opr;
+  switch (type->tag()) {
+  case intTag:     opr = callee ? FrameMap::I0_opr      : FrameMap::O0_opr;       break;
+  case objectTag:  opr = callee ? FrameMap::I0_oop_opr  : FrameMap::O0_oop_opr;   break;
+  case longTag:    opr = callee ? FrameMap::in_long_opr : FrameMap::out_long_opr; break;
+  case floatTag:   opr = FrameMap::F0_opr;                                        break;
+  case doubleTag:  opr = FrameMap::F0_double_opr;                                 break;
+
+  case addressTag:
+  default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr;
+  }
+
+  assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch");
+  return opr;
+}
+
+LIR_Opr LIRGenerator::rlock_callee_saved(BasicType type) {
+  LIR_Opr reg = new_register(type);
+  set_vreg_flag(reg, callee_saved);
+  return reg;
+}
+
+
+LIR_Opr LIRGenerator::rlock_byte(BasicType type) {
+  return new_register(T_INT);
+}
+
+
+
+
+
+//--------- loading items into registers --------------------------------
+
+// SPARC cannot inline all constants
+bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const {
+  if (v->type()->as_IntConstant() != NULL) {
+    return v->type()->as_IntConstant()->value() == 0;
+  } else if (v->type()->as_LongConstant() != NULL) {
+    return v->type()->as_LongConstant()->value() == 0L;
+  } else if (v->type()->as_ObjectConstant() != NULL) {
+    return v->type()->as_ObjectConstant()->value()->is_null_object();
+  } else {
+    return false;
+  }
+}
+
+
+// only simm13 constants can be inlined
+bool LIRGenerator:: can_inline_as_constant(Value i) const {
+  if (i->type()->as_IntConstant() != NULL) {
+    return Assembler::is_simm13(i->type()->as_IntConstant()->value());
+  } else {
+    return can_store_as_constant(i, as_BasicType(i->type()));
+  }
+}
+
+
+bool LIRGenerator:: can_inline_as_constant(LIR_Const* c) const {
+  if (c->type() == T_INT) {
+    return Assembler::is_simm13(c->as_jint());
+  }
+  return false;
+}
+
+
+LIR_Opr LIRGenerator::safepoint_poll_register() {
+  return new_register(T_INT);
+}
+
+
+
+LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
+                                            int shift, int disp, BasicType type) {
+  assert(base->is_register(), "must be");
+
+  // accumulate fixed displacements
+  if (index->is_constant()) {
+    disp += index->as_constant_ptr()->as_jint() << shift;
+    index = LIR_OprFact::illegalOpr;
+  }
+
+  if (index->is_register()) {
+    // apply the shift and accumulate the displacement
+    if (shift > 0) {
+      LIR_Opr tmp = new_register(T_INT);
+      __ shift_left(index, shift, tmp);
+      index = tmp;
+    }
+    if (disp != 0) {
+      LIR_Opr tmp = new_register(T_INT);
+      if (Assembler::is_simm13(disp)) {
+        __ add(tmp, LIR_OprFact::intConst(disp), tmp);
+        index = tmp;
+      } else {
+        __ move(LIR_OprFact::intConst(disp), tmp);
+        __ add(tmp, index, tmp);
+        index = tmp;
+      }
+      disp = 0;
+    }
+  } else if (disp != 0 && !Assembler::is_simm13(disp)) {
+    // index is illegal so replace it with the displacement loaded into a register
+    index = new_register(T_INT);
+    __ move(LIR_OprFact::intConst(disp), index);
+    disp = 0;
+  }
+
+  // at this point we either have base + index or base + displacement
+  if (disp == 0) {
+    return new LIR_Address(base, index, type);
+  } else {
+    assert(Assembler::is_simm13(disp), "must be");
+    return new LIR_Address(base, disp, type);
+  }
+}
+
+
+LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr,
+                                              BasicType type, bool needs_card_mark) {
+  int elem_size = type2aelembytes[type];
+  int shift = exact_log2(elem_size);
+
+  LIR_Opr base_opr;
+  int offset = arrayOopDesc::base_offset_in_bytes(type);
+
+  if (index_opr->is_constant()) {
+    int i = index_opr->as_constant_ptr()->as_jint();
+    int array_offset = i * elem_size;
+    if (Assembler::is_simm13(array_offset + offset)) {
+      base_opr = array_opr;
+      offset = array_offset + offset;
+    } else {
+      base_opr = new_pointer_register();
+      if (Assembler::is_simm13(array_offset)) {
+        __ add(array_opr, LIR_OprFact::intptrConst(array_offset), base_opr);
+      } else {
+        __ move(LIR_OprFact::intptrConst(array_offset), base_opr);
+        __ add(base_opr, array_opr, base_opr);
+      }
+    }
+  } else {
+#ifdef _LP64
+    if (index_opr->type() == T_INT) {
+      LIR_Opr tmp = new_register(T_LONG);
+      __ convert(Bytecodes::_i2l, index_opr, tmp);
+      index_opr = tmp;
+    }
+#endif
+
+    base_opr = new_pointer_register();
+    assert (index_opr->is_register(), "Must be register");
+    if (shift > 0) {
+      __ shift_left(index_opr, shift, base_opr);
+      __ add(base_opr, array_opr, base_opr);
+    } else {
+      __ add(index_opr, array_opr, base_opr);
+    }
+  }
+  if (needs_card_mark) {
+    LIR_Opr ptr = new_pointer_register();
+    __ add(base_opr, LIR_OprFact::intptrConst(offset), ptr);
+    return new LIR_Address(ptr, 0, type);
+  } else {
+    return new LIR_Address(base_opr, offset, type);
+  }
+}
+
+
+void LIRGenerator::increment_counter(address counter, int step) {
+  LIR_Opr pointer = new_pointer_register();
+  __ move(LIR_OprFact::intptrConst(counter), pointer);
+  LIR_Address* addr = new LIR_Address(pointer, 0, T_INT);
+  increment_counter(addr, step);
+}
+
+void LIRGenerator::increment_counter(LIR_Address* addr, int step) {
+  LIR_Opr temp = new_register(T_INT);
+  __ move(addr, temp);
+  LIR_Opr c = LIR_OprFact::intConst(step);
+  if (Assembler::is_simm13(step)) {
+    __ add(temp, c, temp);
+  } else {
+    LIR_Opr temp2 = new_register(T_INT);
+    __ move(c, temp2);
+    __ add(temp, temp2, temp);
+  }
+  __ move(temp, addr);
+}
+
+
+void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) {
+  LIR_Opr o7opr = FrameMap::O7_opr;
+  __ load(new LIR_Address(base, disp, T_INT), o7opr, info);
+  __ cmp(condition, o7opr, c);
+}
+
+
+void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) {
+  LIR_Opr o7opr = FrameMap::O7_opr;
+  __ load(new LIR_Address(base, disp, type), o7opr, info);
+  __ cmp(condition, reg, o7opr);
+}
+
+
+void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, LIR_Opr disp, BasicType type, CodeEmitInfo* info) {
+  LIR_Opr o7opr = FrameMap::O7_opr;
+  __ load(new LIR_Address(base, disp, type), o7opr, info);
+  __ cmp(condition, reg, o7opr);
+}
+
+
+bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) {
+  assert(left != result, "should be different registers");
+  if (is_power_of_2(c + 1)) {
+    __ shift_left(left, log2_intptr(c + 1), result);
+    __ sub(result, left, result);
+    return true;
+  } else if (is_power_of_2(c - 1)) {
+    __ shift_left(left, log2_intptr(c - 1), result);
+    __ add(result, left, result);
+    return true;
+  }
+  return false;
+}
+
+
+void LIRGenerator::store_stack_parameter (LIR_Opr item, ByteSize offset_from_sp) {
+  BasicType t = item->type();
+  LIR_Opr sp_opr = FrameMap::SP_opr;
+  if ((t == T_LONG || t == T_DOUBLE) &&
+      ((in_bytes(offset_from_sp) - STACK_BIAS) % 8 != 0)) {
+    __ unaligned_move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t));
+  } else {
+    __ move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t));
+  }
+}
+
+//----------------------------------------------------------------------
+//             visitor functions
+//----------------------------------------------------------------------
+
+
+void LIRGenerator::do_StoreIndexed(StoreIndexed* x) {
+  assert(x->is_root(),"");
+  bool needs_range_check = true;
+  bool use_length = x->length() != NULL;
+  bool obj_store = x->elt_type() == T_ARRAY || x->elt_type() == T_OBJECT;
+  bool needs_store_check = obj_store && (x->value()->as_Constant() == NULL ||
+                                         !get_jobject_constant(x->value())->is_null_object());
+
+  LIRItem array(x->array(), this);
+  LIRItem index(x->index(), this);
+  LIRItem value(x->value(), this);
+  LIRItem length(this);
+
+  array.load_item();
+  index.load_nonconstant();
+
+  if (use_length) {
+    needs_range_check = x->compute_needs_range_check();
+    if (needs_range_check) {
+      length.set_instruction(x->length());
+      length.load_item();
+    }
+  }
+  if (needs_store_check) {
+    value.load_item();
+  } else {
+    value.load_for_store(x->elt_type());
+  }
+
+  set_no_result(x);
+
+  // the CodeEmitInfo must be duplicated for each different
+  // LIR-instruction because spilling can occur anywhere between two
+  // instructions and so the debug information must be different
+  CodeEmitInfo* range_check_info = state_for(x);
+  CodeEmitInfo* null_check_info = NULL;
+  if (x->needs_null_check()) {
+    null_check_info = new CodeEmitInfo(range_check_info);
+  }
+
+  // emit array address setup early so it schedules better
+  LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store);
+
+  if (GenerateRangeChecks && needs_range_check) {
+    if (use_length) {
+      __ cmp(lir_cond_belowEqual, length.result(), index.result());
+      __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result()));
+    } else {
+      array_range_check(array.result(), index.result(), null_check_info, range_check_info);
+      // range_check also does the null check
+      null_check_info = NULL;
+    }
+  }
+
+  if (GenerateArrayStoreCheck && needs_store_check) {
+    LIR_Opr tmp1 = FrameMap::G1_opr;
+    LIR_Opr tmp2 = FrameMap::G3_opr;
+    LIR_Opr tmp3 = FrameMap::G5_opr;
+
+    CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info);
+    __ store_check(value.result(), array.result(), tmp1, tmp2, tmp3, store_check_info);
+  }
+
+  __ move(value.result(), array_addr, null_check_info);
+  if (obj_store) {
+    // Is this precise?
+    post_barrier(LIR_OprFact::address(array_addr), value.result());
+  }
+}
+
+
+void LIRGenerator::do_MonitorEnter(MonitorEnter* x) {
+  assert(x->is_root(),"");
+  LIRItem obj(x->obj(), this);
+  obj.load_item();
+
+  set_no_result(x);
+
+  LIR_Opr lock    = FrameMap::G1_opr;
+  LIR_Opr scratch = FrameMap::G3_opr;
+  LIR_Opr hdr     = FrameMap::G4_opr;
+
+  CodeEmitInfo* info_for_exception = NULL;
+  if (x->needs_null_check()) {
+    info_for_exception = state_for(x, x->lock_stack_before());
+  }
+
+  // this CodeEmitInfo must not have the xhandlers because here the
+  // object is already locked (xhandlers expects object to be unlocked)
+  CodeEmitInfo* info = state_for(x, x->state(), true);
+  monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info);
+}
+
+
+void LIRGenerator::do_MonitorExit(MonitorExit* x) {
+  assert(x->is_root(),"");
+  LIRItem obj(x->obj(), this);
+  obj.dont_load_item();
+
+  set_no_result(x);
+  LIR_Opr lock      = FrameMap::G1_opr;
+  LIR_Opr hdr       = FrameMap::G3_opr;
+  LIR_Opr obj_temp  = FrameMap::G4_opr;
+  monitor_exit(obj_temp, lock, hdr, x->monitor_no());
+}
+
+
+// _ineg, _lneg, _fneg, _dneg
+void LIRGenerator::do_NegateOp(NegateOp* x) {
+  LIRItem value(x->x(), this);
+  value.load_item();
+  LIR_Opr reg = rlock_result(x);
+  __ negate(value.result(), reg);
+}
+
+
+
+// for  _fadd, _fmul, _fsub, _fdiv, _frem
+//      _dadd, _dmul, _dsub, _ddiv, _drem
+void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) {
+  switch (x->op()) {
+  case Bytecodes::_fadd:
+  case Bytecodes::_fmul:
+  case Bytecodes::_fsub:
+  case Bytecodes::_fdiv:
+  case Bytecodes::_dadd:
+  case Bytecodes::_dmul:
+  case Bytecodes::_dsub:
+  case Bytecodes::_ddiv: {
+    LIRItem left(x->x(), this);
+    LIRItem right(x->y(), this);
+    left.load_item();
+    right.load_item();
+    rlock_result(x);
+    arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp());
+  }
+  break;
+
+  case Bytecodes::_frem:
+  case Bytecodes::_drem: {
+    address entry;
+    switch (x->op()) {
+    case Bytecodes::_frem:
+      entry = CAST_FROM_FN_PTR(address, SharedRuntime::frem);
+      break;
+    case Bytecodes::_drem:
+      entry = CAST_FROM_FN_PTR(address, SharedRuntime::drem);
+      break;
+    default:
+      ShouldNotReachHere();
+    }
+    LIR_Opr result = call_runtime(x->x(), x->y(), entry, x->type(), NULL);
+    set_result(x, result);
+  }
+  break;
+
+  default: ShouldNotReachHere();
+  }
+}
+
+
+// for  _ladd, _lmul, _lsub, _ldiv, _lrem
+void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) {
+  switch (x->op()) {
+  case Bytecodes::_lrem:
+  case Bytecodes::_lmul:
+  case Bytecodes::_ldiv: {
+
+    if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) {
+      LIRItem right(x->y(), this);
+      right.load_item();
+
+      CodeEmitInfo* info = state_for(x);
+      LIR_Opr item = right.result();
+      assert(item->is_register(), "must be");
+      __ cmp(lir_cond_equal, item, LIR_OprFact::longConst(0));
+      __ branch(lir_cond_equal, T_LONG, new DivByZeroStub(info));
+    }
+
+    address entry;
+    switch (x->op()) {
+    case Bytecodes::_lrem:
+      entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem);
+      break; // check if dividend is 0 is done elsewhere
+    case Bytecodes::_ldiv:
+      entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv);
+      break; // check if dividend is 0 is done elsewhere
+    case Bytecodes::_lmul:
+      entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul);
+      break;
+    default:
+      ShouldNotReachHere();
+    }
+
+    // order of arguments to runtime call is reversed.
+    LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL);
+    set_result(x, result);
+    break;
+  }
+  case Bytecodes::_ladd:
+  case Bytecodes::_lsub: {
+    LIRItem left(x->x(), this);
+    LIRItem right(x->y(), this);
+    left.load_item();
+    right.load_item();
+    rlock_result(x);
+
+    arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL);
+    break;
+  }
+  default: ShouldNotReachHere();
+  }
+}
+
+
+// Returns if item is an int constant that can be represented by a simm13
+static bool is_simm13(LIR_Opr item) {
+  if (item->is_constant() && item->type() == T_INT) {
+    return Assembler::is_simm13(item->as_constant_ptr()->as_jint());
+  } else {
+    return false;
+  }
+}
+
+
+// for: _iadd, _imul, _isub, _idiv, _irem
+void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) {
+  bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem;
+  LIRItem left(x->x(), this);
+  LIRItem right(x->y(), this);
+  // missing test if instr is commutative and if we should swap
+  right.load_nonconstant();
+  assert(right.is_constant() || right.is_register(), "wrong state of right");
+  left.load_item();
+  rlock_result(x);
+  if (is_div_rem) {
+    CodeEmitInfo* info = state_for(x);
+    LIR_Opr tmp = FrameMap::G1_opr;
+    if (x->op() == Bytecodes::_irem) {
+      __ irem(left.result(), right.result(), x->operand(), tmp, info);
+    } else if (x->op() == Bytecodes::_idiv) {
+      __ idiv(left.result(), right.result(), x->operand(), tmp, info);
+    }
+  } else {
+    arithmetic_op_int(x->op(), x->operand(), left.result(), right.result(), FrameMap::G1_opr);
+  }
+}
+
+
+void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) {
+  ValueTag tag = x->type()->tag();
+  assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters");
+  switch (tag) {
+    case floatTag:
+    case doubleTag:  do_ArithmeticOp_FPU(x);  return;
+    case longTag:    do_ArithmeticOp_Long(x); return;
+    case intTag:     do_ArithmeticOp_Int(x);  return;
+  }
+  ShouldNotReachHere();
+}
+
+
+// _ishl, _lshl, _ishr, _lshr, _iushr, _lushr
+void LIRGenerator::do_ShiftOp(ShiftOp* x) {
+  LIRItem value(x->x(), this);
+  LIRItem count(x->y(), this);
+  // Long shift destroys count register
+  if (value.type()->is_long()) {
+    count.set_destroys_register();
+  }
+  value.load_item();
+  // the old backend doesn't support this
+  if (count.is_constant() && count.type()->as_IntConstant() != NULL && value.type()->is_int()) {
+    jint c = count.get_jint_constant() & 0x1f;
+    assert(c >= 0 && c < 32, "should be small");
+    count.dont_load_item();
+  } else {
+    count.load_item();
+  }
+  LIR_Opr reg = rlock_result(x);
+  shift_op(x->op(), reg, value.result(), count.result(), LIR_OprFact::illegalOpr);
+}
+
+
+// _iand, _land, _ior, _lor, _ixor, _lxor
+void LIRGenerator::do_LogicOp(LogicOp* x) {
+  LIRItem left(x->x(), this);
+  LIRItem right(x->y(), this);
+
+  left.load_item();
+  right.load_nonconstant();
+  LIR_Opr reg = rlock_result(x);
+
+  logic_op(x->op(), reg, left.result(), right.result());
+}
+
+
+
+// _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg
+void LIRGenerator::do_CompareOp(CompareOp* x) {
+  LIRItem left(x->x(), this);
+  LIRItem right(x->y(), this);
+  left.load_item();
+  right.load_item();
+  LIR_Opr reg = rlock_result(x);
+
+  if (x->x()->type()->is_float_kind()) {
+    Bytecodes::Code code = x->op();
+    __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl));
+  } else if (x->x()->type()->tag() == longTag) {
+    __ lcmp2int(left.result(), right.result(), reg);
+  } else {
+    Unimplemented();
+  }
+}
+
+
+void LIRGenerator::do_AttemptUpdate(Intrinsic* x) {
+  assert(x->number_of_arguments() == 3, "wrong type");
+  LIRItem obj       (x->argument_at(0), this);  // AtomicLong object
+  LIRItem cmp_value (x->argument_at(1), this);  // value to compare with field
+  LIRItem new_value (x->argument_at(2), this);  // replace field with new_value if it matches cmp_value
+
+  obj.load_item();
+  cmp_value.load_item();
+  new_value.load_item();
+
+  // generate compare-and-swap and produce zero condition if swap occurs
+  int value_offset = sun_misc_AtomicLongCSImpl::value_offset();
+  LIR_Opr addr = FrameMap::O7_opr;
+  __ add(obj.result(), LIR_OprFact::intConst(value_offset), addr);
+  LIR_Opr t1 = FrameMap::G1_opr;  // temp for 64-bit value
+  LIR_Opr t2 = FrameMap::G3_opr;  // temp for 64-bit value
+  __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2);
+
+  // generate conditional move of boolean result
+  LIR_Opr result = rlock_result(x);
+  __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result);
+}
+
+
+void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) {
+  assert(x->number_of_arguments() == 4, "wrong type");
+  LIRItem obj   (x->argument_at(0), this);  // object
+  LIRItem offset(x->argument_at(1), this);  // offset of field
+  LIRItem cmp   (x->argument_at(2), this);  // value to compare with field
+  LIRItem val   (x->argument_at(3), this);  // replace field with val if matches cmp
+
+  // Use temps to avoid kills
+  LIR_Opr t1 = FrameMap::G1_opr;
+  LIR_Opr t2 = FrameMap::G3_opr;
+  LIR_Opr addr = new_pointer_register();
+
+  // get address of field
+  obj.load_item();
+  offset.load_item();
+  cmp.load_item();
+  val.load_item();
+
+  __ add(obj.result(), offset.result(), addr);
+
+  if (type == objectType)
+    __ cas_obj(addr, cmp.result(), val.result(), t1, t2);
+  else if (type == intType)
+    __ cas_int(addr, cmp.result(), val.result(), t1, t2);
+  else if (type == longType)
+    __ cas_long(addr, cmp.result(), val.result(), t1, t2);
+  else {
+    ShouldNotReachHere();
+  }
+
+  // generate conditional move of boolean result
+  LIR_Opr result = rlock_result(x);
+  __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result);
+  if (type == objectType) {  // Write-barrier needed for Object fields.
+    post_barrier(obj.result(), val.result());
+  }
+}
+
+
+void LIRGenerator::do_MathIntrinsic(Intrinsic* x) {
+  switch (x->id()) {
+    case vmIntrinsics::_dabs:
+    case vmIntrinsics::_dsqrt: {
+      assert(x->number_of_arguments() == 1, "wrong type");
+      LIRItem value(x->argument_at(0), this);
+      value.load_item();
+      LIR_Opr dst = rlock_result(x);
+
+      switch (x->id()) {
+      case vmIntrinsics::_dsqrt: {
+        __ sqrt(value.result(), dst, LIR_OprFact::illegalOpr);
+        break;
+      }
+      case vmIntrinsics::_dabs: {
+        __ abs(value.result(), dst, LIR_OprFact::illegalOpr);
+        break;
+      }
+      }
+      break;
+    }
+    case vmIntrinsics::_dlog10: // fall through
+    case vmIntrinsics::_dlog: // fall through
+    case vmIntrinsics::_dsin: // fall through
+    case vmIntrinsics::_dtan: // fall through
+    case vmIntrinsics::_dcos: {
+      assert(x->number_of_arguments() == 1, "wrong type");
+
+      address runtime_entry = NULL;
+      switch (x->id()) {
+      case vmIntrinsics::_dsin:
+        runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dsin);
+        break;
+      case vmIntrinsics::_dcos:
+        runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dcos);
+        break;
+      case vmIntrinsics::_dtan:
+        runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dtan);
+        break;
+      case vmIntrinsics::_dlog:
+        runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog);
+        break;
+      case vmIntrinsics::_dlog10:
+        runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10);
+        break;
+      default:
+        ShouldNotReachHere();
+      }
+
+      LIR_Opr result = call_runtime(x->argument_at(0), runtime_entry, x->type(), NULL);
+      set_result(x, result);
+    }
+  }
+}
+
+
+void LIRGenerator::do_ArrayCopy(Intrinsic* x) {
+  assert(x->number_of_arguments() == 5, "wrong type");
+  // Note: spill caller save before setting the item
+  LIRItem src     (x->argument_at(0), this);
+  LIRItem src_pos (x->argument_at(1), this);
+  LIRItem dst     (x->argument_at(2), this);
+  LIRItem dst_pos (x->argument_at(3), this);
+  LIRItem length  (x->argument_at(4), this);
+  // load all values in callee_save_registers, as this makes the
+  // parameter passing to the fast case simpler
+  src.load_item_force     (rlock_callee_saved(T_OBJECT));
+  src_pos.load_item_force (rlock_callee_saved(T_INT));
+  dst.load_item_force     (rlock_callee_saved(T_OBJECT));
+  dst_pos.load_item_force (rlock_callee_saved(T_INT));
+  length.load_item_force  (rlock_callee_saved(T_INT));
+
+  int flags;
+  ciArrayKlass* expected_type;
+  arraycopy_helper(x, &flags, &expected_type);
+
+  CodeEmitInfo* info = state_for(x, x->state());
+  __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(),
+               length.result(), rlock_callee_saved(T_INT),
+               expected_type, flags, info);
+  set_no_result(x);
+}
+
+// _i2l, _i2f, _i2d, _l2i, _l2f, _l2d, _f2i, _f2l, _f2d, _d2i, _d2l, _d2f
+// _i2b, _i2c, _i2s
+void LIRGenerator::do_Convert(Convert* x) {
+
+  switch (x->op()) {
+    case Bytecodes::_f2l:
+    case Bytecodes::_d2l:
+    case Bytecodes::_d2i:
+    case Bytecodes::_l2f:
+    case Bytecodes::_l2d: {
+
+      address entry;
+      switch (x->op()) {
+      case Bytecodes::_l2f:
+        entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2f);
+        break;
+      case Bytecodes::_l2d:
+        entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2d);
+        break;
+      case Bytecodes::_f2l:
+        entry = CAST_FROM_FN_PTR(address, SharedRuntime::f2l);
+        break;
+      case Bytecodes::_d2l:
+        entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2l);
+        break;
+      case Bytecodes::_d2i:
+        entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2i);
+        break;
+      default:
+        ShouldNotReachHere();
+      }
+      LIR_Opr result = call_runtime(x->value(), entry, x->type(), NULL);
+      set_result(x, result);
+      break;
+    }
+
+    case Bytecodes::_i2f:
+    case Bytecodes::_i2d: {
+      LIRItem value(x->value(), this);
+
+      LIR_Opr reg = rlock_result(x);
+      // To convert an int to double, we need to load the 32-bit int
+      // from memory into a single precision floating point register
+      // (even numbered). Then the sparc fitod instruction takes care
+      // of the conversion. This is a bit ugly, but is the best way to
+      // get the int value in a single precision floating point register
+      value.load_item();
+      LIR_Opr tmp = force_to_spill(value.result(), T_FLOAT);
+      __ convert(x->op(), tmp, reg);
+      break;
+    }
+    break;
+
+    case Bytecodes::_i2l:
+    case Bytecodes::_i2b:
+    case Bytecodes::_i2c:
+    case Bytecodes::_i2s:
+    case Bytecodes::_l2i:
+    case Bytecodes::_f2d:
+    case Bytecodes::_d2f: { // inline code
+      LIRItem value(x->value(), this);
+
+      value.load_item();
+      LIR_Opr reg = rlock_result(x);
+      __ convert(x->op(), value.result(), reg, false);
+    }
+    break;
+
+    case Bytecodes::_f2i: {
+      LIRItem value (x->value(), this);
+      value.set_destroys_register();
+      value.load_item();
+      LIR_Opr reg = rlock_result(x);
+      set_vreg_flag(reg, must_start_in_memory);
+      __ convert(x->op(), value.result(), reg, false);
+    }
+    break;
+
+    default: ShouldNotReachHere();
+  }
+}
+
+
+void LIRGenerator::do_NewInstance(NewInstance* x) {
+  // This instruction can be deoptimized in the slow path : use
+  // O0 as result register.
+  const LIR_Opr reg = result_register_for(x->type());
+
+  if (PrintNotLoaded && !x->klass()->is_loaded()) {
+    tty->print_cr("   ###class not loaded at new bci %d", x->bci());
+  }
+  CodeEmitInfo* info = state_for(x, x->state());
+  LIR_Opr tmp1 = FrameMap::G1_oop_opr;
+  LIR_Opr tmp2 = FrameMap::G3_oop_opr;
+  LIR_Opr tmp3 = FrameMap::G4_oop_opr;
+  LIR_Opr tmp4 = FrameMap::O1_oop_opr;
+  LIR_Opr klass_reg = FrameMap::G5_oop_opr;
+  new_instance(reg, x->klass(), tmp1, tmp2, tmp3, tmp4, klass_reg, info);
+  LIR_Opr result = rlock_result(x);
+  __ move(reg, result);
+}
+
+
+void LIRGenerator::do_NewTypeArray(NewTypeArray* x) {
+  LIRItem length(x->length(), this);
+  length.load_item();
+
+  LIR_Opr reg = result_register_for(x->type());
+  LIR_Opr tmp1 = FrameMap::G1_oop_opr;
+  LIR_Opr tmp2 = FrameMap::G3_oop_opr;
+  LIR_Opr tmp3 = FrameMap::G4_oop_opr;
+  LIR_Opr tmp4 = FrameMap::O1_oop_opr;
+  LIR_Opr klass_reg = FrameMap::G5_oop_opr;
+  LIR_Opr len = length.result();
+  BasicType elem_type = x->elt_type();
+
+  __ oop2reg(ciTypeArrayKlass::make(elem_type)->encoding(), klass_reg);
+
+  CodeEmitInfo* info = state_for(x, x->state());
+  CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info);
+  __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path);
+
+  LIR_Opr result = rlock_result(x);
+  __ move(reg, result);
+}
+
+
+void LIRGenerator::do_NewObjectArray(NewObjectArray* x) {
+  LIRItem length(x->length(), this);
+  // in case of patching (i.e., object class is not yet loaded), we need to reexecute the instruction
+  // and therefore provide the state before the parameters have been consumed
+  CodeEmitInfo* patching_info = NULL;
+  if (!x->klass()->is_loaded() || PatchALot) {
+    patching_info = state_for(x, x->state_before());
+  }
+
+  length.load_item();
+
+  const LIR_Opr reg = result_register_for(x->type());
+  LIR_Opr tmp1 = FrameMap::G1_oop_opr;
+  LIR_Opr tmp2 = FrameMap::G3_oop_opr;
+  LIR_Opr tmp3 = FrameMap::G4_oop_opr;
+  LIR_Opr tmp4 = FrameMap::O1_oop_opr;
+  LIR_Opr klass_reg = FrameMap::G5_oop_opr;
+  LIR_Opr len = length.result();
+  CodeEmitInfo* info = state_for(x, x->state());
+
+  CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info);
+  ciObject* obj = (ciObject*) ciObjArrayKlass::make(x->klass());
+  if (obj == ciEnv::unloaded_ciobjarrayklass()) {
+    BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error");
+  }
+  jobject2reg_with_patching(klass_reg, obj, patching_info);
+  __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path);
+
+  LIR_Opr result = rlock_result(x);
+  __ move(reg, result);
+}
+
+
+void LIRGenerator::do_NewMultiArray(NewMultiArray* x) {
+  Values* dims = x->dims();
+  int i = dims->length();
+  LIRItemList* items = new LIRItemList(dims->length(), NULL);
+  while (i-- > 0) {
+    LIRItem* size = new LIRItem(dims->at(i), this);
+    items->at_put(i, size);
+  }
+
+  // need to get the info before, as the items may become invalid through item_free
+  CodeEmitInfo* patching_info = NULL;
+  if (!x->klass()->is_loaded() || PatchALot) {
+    patching_info = state_for(x, x->state_before());
+
+    // cannot re-use same xhandlers for multiple CodeEmitInfos, so
+    // clone all handlers
+    x->set_exception_handlers(new XHandlers(x->exception_handlers()));
+  }
+
+  i = dims->length();
+  while (i-- > 0) {
+    LIRItem* size = items->at(i);
+    // if a patching_info was generated above then debug information for the state before
+    // the call is going to be emitted.  The LIRGenerator calls above may have left some values
+    // in registers and that's been recorded in the CodeEmitInfo.  In that case the items
+    // for those values can't simply be freed if they are registers because the values
+    // might be destroyed by store_stack_parameter.  So in the case of patching, delay the
+    // freeing of the items that already were in registers
+    size->load_item();
+    store_stack_parameter (size->result(),
+                           in_ByteSize(STACK_BIAS +
+                                       (i + frame::memory_parameter_word_sp_offset) * wordSize));
+  }
+
+  // This instruction can be deoptimized in the slow path : use
+  // O0 as result register.
+  const LIR_Opr reg = result_register_for(x->type());
+  CodeEmitInfo* info = state_for(x, x->state());
+
+  jobject2reg_with_patching(reg, x->klass(), patching_info);
+  LIR_Opr rank = FrameMap::O1_opr;
+  __ move(LIR_OprFact::intConst(x->rank()), rank);
+  LIR_Opr varargs = FrameMap::as_pointer_opr(O2);
+  int offset_from_sp = (frame::memory_parameter_word_sp_offset * wordSize) + STACK_BIAS;
+  __ add(FrameMap::SP_opr,
+         LIR_OprFact::intptrConst(offset_from_sp),
+         varargs);
+  LIR_OprList* args = new LIR_OprList(3);
+  args->append(reg);
+  args->append(rank);
+  args->append(varargs);
+  __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id),
+                  LIR_OprFact::illegalOpr,
+                  reg, args, info);
+
+  LIR_Opr result = rlock_result(x);
+  __ move(reg, result);
+}
+
+
+void LIRGenerator::do_BlockBegin(BlockBegin* x) {
+}
+
+
+void LIRGenerator::do_CheckCast(CheckCast* x) {
+  LIRItem obj(x->obj(), this);
+  CodeEmitInfo* patching_info = NULL;
+  if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) {
+    // must do this before locking the destination register as an oop register,
+    // and before the obj is loaded (so x->obj()->item() is valid for creating a debug info location)
+    patching_info = state_for(x, x->state_before());
+  }
+  obj.load_item();
+  LIR_Opr out_reg = rlock_result(x);
+  CodeStub* stub;
+  CodeEmitInfo* info_for_exception = state_for(x, x->state()->copy_locks());
+
+  if (x->is_incompatible_class_change_check()) {
+    assert(patching_info == NULL, "can't patch this");
+    stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, LIR_OprFact::illegalOpr, info_for_exception);
+  } else {
+    stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception);
+  }
+  LIR_Opr tmp1 = FrameMap::G1_oop_opr;
+  LIR_Opr tmp2 = FrameMap::G3_oop_opr;
+  LIR_Opr tmp3 = FrameMap::G4_oop_opr;
+  __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3,
+               x->direct_compare(), info_for_exception, patching_info, stub,
+               x->profiled_method(), x->profiled_bci());
+}
+
+
+void LIRGenerator::do_InstanceOf(InstanceOf* x) {
+  LIRItem obj(x->obj(), this);
+  CodeEmitInfo* patching_info = NULL;
+  if (!x->klass()->is_loaded() || PatchALot) {
+    patching_info = state_for(x, x->state_before());
+  }
+  // ensure the result register is not the input register because the result is initialized before the patching safepoint
+  obj.load_item();
+  LIR_Opr out_reg = rlock_result(x);
+  LIR_Opr tmp1 = FrameMap::G1_oop_opr;
+  LIR_Opr tmp2 = FrameMap::G3_oop_opr;
+  LIR_Opr tmp3 = FrameMap::G4_oop_opr;
+  __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3,  x->direct_compare(), patching_info);
+}
+
+
+void LIRGenerator::do_If(If* x) {
+  assert(x->number_of_sux() == 2, "inconsistency");
+  ValueTag tag = x->x()->type()->tag();
+  LIRItem xitem(x->x(), this);
+  LIRItem yitem(x->y(), this);
+  LIRItem* xin = &xitem;
+  LIRItem* yin = &yitem;
+  If::Condition cond = x->cond();
+
+  if (tag == longTag) {
+    // for longs, only conditions "eql", "neq", "lss", "geq" are valid;
+    // mirror for other conditions
+    if (cond == If::gtr || cond == If::leq) {
+      // swap inputs
+      cond = Instruction::mirror(cond);
+      xin = &yitem;
+      yin = &xitem;
+    }
+    xin->set_destroys_register();
+  }
+
+  LIR_Opr left = LIR_OprFact::illegalOpr;
+  LIR_Opr right = LIR_OprFact::illegalOpr;
+
+  xin->load_item();
+  left = xin->result();
+
+  if (is_simm13(yin->result())) {
+    // inline int constants which are small enough to be immediate operands
+    right = LIR_OprFact::value_type(yin->value()->type());
+  } else if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 &&
+             (cond == If::eql || cond == If::neq)) {
+    // inline long zero
+    right = LIR_OprFact::value_type(yin->value()->type());
+  } else if (tag == objectTag && yin->is_constant() && (yin->get_jobject_constant()->is_null_object())) {
+    right = LIR_OprFact::value_type(yin->value()->type());
+  } else {
+    yin->load_item();
+    right = yin->result();
+  }
+  set_no_result(x);
+
+  // add safepoint before generating condition code so it can be recomputed
+  if (x->is_safepoint()) {
+    // increment backedge counter if needed
+    increment_backedge_counter(state_for(x, x->state_before()));
+
+    __ safepoint(new_register(T_INT), state_for(x, x->state_before()));
+  }
+
+  __ cmp(lir_cond(cond), left, right);
+  profile_branch(x, cond);
+  move_to_phi(x->state());
+  if (x->x()->type()->is_float_kind()) {
+    __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux());
+  } else {
+    __ branch(lir_cond(cond), right->type(), x->tsux());
+  }
+  assert(x->default_sux() == x->fsux(), "wrong destination above");
+  __ jump(x->default_sux());
+}
+
+
+LIR_Opr LIRGenerator::getThreadPointer() {
+  return FrameMap::as_pointer_opr(G2);
+}
+
+
+void LIRGenerator::trace_block_entry(BlockBegin* block) {
+  __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::O0_opr);
+  LIR_OprList* args = new LIR_OprList(1);
+  args->append(FrameMap::O0_opr);
+  address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry);
+  __ call_runtime_leaf(func, rlock_callee_saved(T_INT), LIR_OprFact::illegalOpr, args);
+}
+
+
+void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address,
+                                        CodeEmitInfo* info) {
+#ifdef _LP64
+  __ store(value, address, info);
+#else
+  __ volatile_store_mem_reg(value, address, info);
+#endif
+}
+
+void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result,
+                                       CodeEmitInfo* info) {
+#ifdef _LP64
+  __ load(address, result, info);
+#else
+  __ volatile_load_mem_reg(address, result, info);
+#endif
+}
+
+
+void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data,
+                                     BasicType type, bool is_volatile) {
+  LIR_Opr base_op = src;
+  LIR_Opr index_op = offset;
+
+  bool is_obj = (type == T_ARRAY || type == T_OBJECT);
+#ifndef _LP64
+  if (is_volatile && type == T_LONG) {
+    __ volatile_store_unsafe_reg(data, src, offset, type, NULL, lir_patch_none);
+  } else
+#endif
+    {
+      if (type == T_BOOLEAN) {
+        type = T_BYTE;
+      }
+      LIR_Address* addr;
+      if (type == T_ARRAY || type == T_OBJECT) {
+        LIR_Opr tmp = new_pointer_register();
+        __ add(base_op, index_op, tmp);
+        addr = new LIR_Address(tmp, 0, type);
+      } else {
+        addr = new LIR_Address(base_op, index_op, type);
+      }
+
+      __ move(data, addr);
+      if (is_obj) {
+        // This address is precise
+        post_barrier(LIR_OprFact::address(addr), data);
+      }
+    }
+}
+
+
+void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset,
+                                     BasicType type, bool is_volatile) {
+#ifndef _LP64
+  if (is_volatile && type == T_LONG) {
+    __ volatile_load_unsafe_reg(src, offset, dst, type, NULL, lir_patch_none);
+  } else
+#endif
+    {
+    LIR_Address* addr = new LIR_Address(src, offset, type);
+    __ load(addr, dst);
+  }
+}