aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2013, 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@0: #include "precompiled.hpp"
aoqi@0: #include "c1/c1_IR.hpp"
aoqi@0: #include "c1/c1_Instruction.hpp"
aoqi@0: #include "c1/c1_InstructionPrinter.hpp"
aoqi@0: #include "c1/c1_ValueStack.hpp"
aoqi@0: #include "ci/ciObjArrayKlass.hpp"
aoqi@0: #include "ci/ciTypeArrayKlass.hpp"
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of Instruction
aoqi@0: 
aoqi@0: 
aoqi@0: int Instruction::dominator_depth() {
aoqi@0:   int result = -1;
aoqi@0:   if (block()) {
aoqi@0:     result = block()->dominator_depth();
aoqi@0:   }
aoqi@0:   assert(result != -1 || this->as_Local(), "Only locals have dominator depth -1");
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: Instruction::Condition Instruction::mirror(Condition cond) {
aoqi@0:   switch (cond) {
aoqi@0:     case eql: return eql;
aoqi@0:     case neq: return neq;
aoqi@0:     case lss: return gtr;
aoqi@0:     case leq: return geq;
aoqi@0:     case gtr: return lss;
aoqi@0:     case geq: return leq;
aoqi@0:     case aeq: return beq;
aoqi@0:     case beq: return aeq;
aoqi@0:   }
aoqi@0:   ShouldNotReachHere();
aoqi@0:   return eql;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: Instruction::Condition Instruction::negate(Condition cond) {
aoqi@0:   switch (cond) {
aoqi@0:     case eql: return neq;
aoqi@0:     case neq: return eql;
aoqi@0:     case lss: return geq;
aoqi@0:     case leq: return gtr;
aoqi@0:     case gtr: return leq;
aoqi@0:     case geq: return lss;
aoqi@0:     case aeq: assert(false, "Above equal cannot be negated");
aoqi@0:     case beq: assert(false, "Below equal cannot be negated");
aoqi@0:   }
aoqi@0:   ShouldNotReachHere();
aoqi@0:   return eql;
aoqi@0: }
aoqi@0: 
aoqi@0: void Instruction::update_exception_state(ValueStack* state) {
aoqi@0:   if (state != NULL && (state->kind() == ValueStack::EmptyExceptionState || state->kind() == ValueStack::ExceptionState)) {
aoqi@0:     assert(state->kind() == ValueStack::EmptyExceptionState || Compilation::current()->env()->jvmti_can_access_local_variables(), "unexpected state kind");
aoqi@0:     _exception_state = state;
aoqi@0:   } else {
aoqi@0:     _exception_state = NULL;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: // Prev without need to have BlockBegin
aoqi@0: Instruction* Instruction::prev() {
aoqi@0:   Instruction* p = NULL;
aoqi@0:   Instruction* q = block();
aoqi@0:   while (q != this) {
aoqi@0:     assert(q != NULL, "this is not in the block's instruction list");
aoqi@0:     p = q; q = q->next();
aoqi@0:   }
aoqi@0:   return p;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Instruction::state_values_do(ValueVisitor* f) {
aoqi@0:   if (state_before() != NULL) {
aoqi@0:     state_before()->values_do(f);
aoqi@0:   }
aoqi@0:   if (exception_state() != NULL){
aoqi@0:     exception_state()->values_do(f);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* Instruction::exact_type() const {
aoqi@0:   ciType* t =  declared_type();
aoqi@0:   if (t != NULL && t->is_klass()) {
aoqi@0:     return t->as_klass()->exact_klass();
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: void Instruction::check_state(ValueStack* state) {
aoqi@0:   if (state != NULL) {
aoqi@0:     state->verify();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Instruction::print() {
aoqi@0:   InstructionPrinter ip;
aoqi@0:   print(ip);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Instruction::print_line() {
aoqi@0:   InstructionPrinter ip;
aoqi@0:   ip.print_line(this);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Instruction::print(InstructionPrinter& ip) {
aoqi@0:   ip.print_head();
aoqi@0:   ip.print_line(this);
aoqi@0:   tty->cr();
aoqi@0: }
aoqi@0: #endif // PRODUCT
aoqi@0: 
aoqi@0: 
aoqi@0: // perform constant and interval tests on index value
aoqi@0: bool AccessIndexed::compute_needs_range_check() {
aoqi@0:   if (length()) {
aoqi@0:     Constant* clength = length()->as_Constant();
aoqi@0:     Constant* cindex = index()->as_Constant();
aoqi@0:     if (clength && cindex) {
aoqi@0:       IntConstant* l = clength->type()->as_IntConstant();
aoqi@0:       IntConstant* i = cindex->type()->as_IntConstant();
aoqi@0:       if (l && i && i->value() < l->value() && i->value() >= 0) {
aoqi@0:         return false;
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (!this->check_flag(NeedsRangeCheckFlag)) {
aoqi@0:     return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   return true;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: ciType* Constant::exact_type() const {
aoqi@0:   if (type()->is_object() && type()->as_ObjectType()->is_loaded()) {
aoqi@0:     return type()->as_ObjectType()->exact_type();
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* LoadIndexed::exact_type() const {
aoqi@0:   ciType* array_type = array()->exact_type();
aoqi@0:   if (array_type != NULL) {
aoqi@0:     assert(array_type->is_array_klass(), "what else?");
aoqi@0:     ciArrayKlass* ak = (ciArrayKlass*)array_type;
aoqi@0: 
aoqi@0:     if (ak->element_type()->is_instance_klass()) {
aoqi@0:       ciInstanceKlass* ik = (ciInstanceKlass*)ak->element_type();
aoqi@0:       if (ik->is_loaded() && ik->is_final()) {
aoqi@0:         return ik;
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return Instruction::exact_type();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: ciType* LoadIndexed::declared_type() const {
aoqi@0:   ciType* array_type = array()->declared_type();
aoqi@0:   if (array_type == NULL || !array_type->is_loaded()) {
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0:   assert(array_type->is_array_klass(), "what else?");
aoqi@0:   ciArrayKlass* ak = (ciArrayKlass*)array_type;
aoqi@0:   return ak->element_type();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: ciType* LoadField::declared_type() const {
aoqi@0:   return field()->type();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: ciType* NewTypeArray::exact_type() const {
aoqi@0:   return ciTypeArrayKlass::make(elt_type());
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* NewObjectArray::exact_type() const {
aoqi@0:   return ciObjArrayKlass::make(klass());
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* NewArray::declared_type() const {
aoqi@0:   return exact_type();
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* NewInstance::exact_type() const {
aoqi@0:   return klass();
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* NewInstance::declared_type() const {
aoqi@0:   return exact_type();
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* CheckCast::declared_type() const {
aoqi@0:   return klass();
aoqi@0: }
aoqi@0: 
aoqi@0: // Implementation of ArithmeticOp
aoqi@0: 
aoqi@0: bool ArithmeticOp::is_commutative() const {
aoqi@0:   switch (op()) {
aoqi@0:     case Bytecodes::_iadd: // fall through
aoqi@0:     case Bytecodes::_ladd: // fall through
aoqi@0:     case Bytecodes::_fadd: // fall through
aoqi@0:     case Bytecodes::_dadd: // fall through
aoqi@0:     case Bytecodes::_imul: // fall through
aoqi@0:     case Bytecodes::_lmul: // fall through
aoqi@0:     case Bytecodes::_fmul: // fall through
aoqi@0:     case Bytecodes::_dmul: return true;
aoqi@0:   }
aoqi@0:   return false;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: bool ArithmeticOp::can_trap() const {
aoqi@0:   switch (op()) {
aoqi@0:     case Bytecodes::_idiv: // fall through
aoqi@0:     case Bytecodes::_ldiv: // fall through
aoqi@0:     case Bytecodes::_irem: // fall through
aoqi@0:     case Bytecodes::_lrem: return true;
aoqi@0:   }
aoqi@0:   return false;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of LogicOp
aoqi@0: 
aoqi@0: bool LogicOp::is_commutative() const {
aoqi@0: #ifdef ASSERT
aoqi@0:   switch (op()) {
aoqi@0:     case Bytecodes::_iand: // fall through
aoqi@0:     case Bytecodes::_land: // fall through
aoqi@0:     case Bytecodes::_ior : // fall through
aoqi@0:     case Bytecodes::_lor : // fall through
aoqi@0:     case Bytecodes::_ixor: // fall through
aoqi@0:     case Bytecodes::_lxor: break;
aoqi@0:     default              : ShouldNotReachHere();
aoqi@0:   }
aoqi@0: #endif
aoqi@0:   // all LogicOps are commutative
aoqi@0:   return true;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of IfOp
aoqi@0: 
aoqi@0: bool IfOp::is_commutative() const {
aoqi@0:   return cond() == eql || cond() == neq;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of StateSplit
aoqi@0: 
aoqi@0: void StateSplit::substitute(BlockList& list, BlockBegin* old_block, BlockBegin* new_block) {
aoqi@0:   NOT_PRODUCT(bool assigned = false;)
aoqi@0:   for (int i = 0; i < list.length(); i++) {
aoqi@0:     BlockBegin** b = list.adr_at(i);
aoqi@0:     if (*b == old_block) {
aoqi@0:       *b = new_block;
aoqi@0:       NOT_PRODUCT(assigned = true;)
aoqi@0:     }
aoqi@0:   }
aoqi@0:   assert(assigned == true, "should have assigned at least once");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: IRScope* StateSplit::scope() const {
aoqi@0:   return _state->scope();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void StateSplit::state_values_do(ValueVisitor* f) {
aoqi@0:   Instruction::state_values_do(f);
aoqi@0:   if (state() != NULL) state()->values_do(f);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::state_values_do(ValueVisitor* f) {
aoqi@0:   StateSplit::state_values_do(f);
aoqi@0: 
aoqi@0:   if (is_set(BlockBegin::exception_entry_flag)) {
aoqi@0:     for (int i = 0; i < number_of_exception_states(); i++) {
aoqi@0:       exception_state_at(i)->values_do(f);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of Invoke
aoqi@0: 
aoqi@0: 
aoqi@0: Invoke::Invoke(Bytecodes::Code code, ValueType* result_type, Value recv, Values* args,
aoqi@0:                int vtable_index, ciMethod* target, ValueStack* state_before)
aoqi@0:   : StateSplit(result_type, state_before)
aoqi@0:   , _code(code)
aoqi@0:   , _recv(recv)
aoqi@0:   , _args(args)
aoqi@0:   , _vtable_index(vtable_index)
aoqi@0:   , _target(target)
aoqi@0: {
aoqi@0:   set_flag(TargetIsLoadedFlag,   target->is_loaded());
aoqi@0:   set_flag(TargetIsFinalFlag,    target_is_loaded() && target->is_final_method());
aoqi@0:   set_flag(TargetIsStrictfpFlag, target_is_loaded() && target->is_strict());
aoqi@0: 
aoqi@0:   assert(args != NULL, "args must exist");
aoqi@0: #ifdef ASSERT
aoqi@0:   AssertValues assert_value;
aoqi@0:   values_do(&assert_value);
aoqi@0: #endif
aoqi@0: 
aoqi@0:   // provide an initial guess of signature size.
aoqi@0:   _signature = new BasicTypeList(number_of_arguments() + (has_receiver() ? 1 : 0));
aoqi@0:   if (has_receiver()) {
aoqi@0:     _signature->append(as_BasicType(receiver()->type()));
aoqi@0:   }
aoqi@0:   for (int i = 0; i < number_of_arguments(); i++) {
aoqi@0:     ValueType* t = argument_at(i)->type();
aoqi@0:     BasicType bt = as_BasicType(t);
aoqi@0:     _signature->append(bt);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Invoke::state_values_do(ValueVisitor* f) {
aoqi@0:   StateSplit::state_values_do(f);
aoqi@0:   if (state_before() != NULL) state_before()->values_do(f);
aoqi@0:   if (state()        != NULL) state()->values_do(f);
aoqi@0: }
aoqi@0: 
aoqi@0: ciType* Invoke::declared_type() const {
aoqi@0:   ciType *t = _target->signature()->return_type();
aoqi@0:   assert(t->basic_type() != T_VOID, "need return value of void method?");
aoqi@0:   return t;
aoqi@0: }
aoqi@0: 
aoqi@0: // Implementation of Contant
aoqi@0: intx Constant::hash() const {
aoqi@0:   if (state_before() == NULL) {
aoqi@0:     switch (type()->tag()) {
aoqi@0:     case intTag:
aoqi@0:       return HASH2(name(), type()->as_IntConstant()->value());
aoqi@0:     case addressTag:
aoqi@0:       return HASH2(name(), type()->as_AddressConstant()->value());
aoqi@0:     case longTag:
aoqi@0:       {
aoqi@0:         jlong temp = type()->as_LongConstant()->value();
aoqi@0:         return HASH3(name(), high(temp), low(temp));
aoqi@0:       }
aoqi@0:     case floatTag:
aoqi@0:       return HASH2(name(), jint_cast(type()->as_FloatConstant()->value()));
aoqi@0:     case doubleTag:
aoqi@0:       {
aoqi@0:         jlong temp = jlong_cast(type()->as_DoubleConstant()->value());
aoqi@0:         return HASH3(name(), high(temp), low(temp));
aoqi@0:       }
aoqi@0:     case objectTag:
aoqi@0:       assert(type()->as_ObjectType()->is_loaded(), "can't handle unloaded values");
aoqi@0:       return HASH2(name(), type()->as_ObjectType()->constant_value());
aoqi@0:     case metaDataTag:
aoqi@0:       assert(type()->as_MetadataType()->is_loaded(), "can't handle unloaded values");
aoqi@0:       return HASH2(name(), type()->as_MetadataType()->constant_value());
aoqi@0:     default:
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: bool Constant::is_equal(Value v) const {
aoqi@0:   if (v->as_Constant() == NULL) return false;
aoqi@0: 
aoqi@0:   switch (type()->tag()) {
aoqi@0:     case intTag:
aoqi@0:       {
aoqi@0:         IntConstant* t1 =    type()->as_IntConstant();
aoqi@0:         IntConstant* t2 = v->type()->as_IntConstant();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 t1->value() == t2->value());
aoqi@0:       }
aoqi@0:     case longTag:
aoqi@0:       {
aoqi@0:         LongConstant* t1 =    type()->as_LongConstant();
aoqi@0:         LongConstant* t2 = v->type()->as_LongConstant();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 t1->value() == t2->value());
aoqi@0:       }
aoqi@0:     case floatTag:
aoqi@0:       {
aoqi@0:         FloatConstant* t1 =    type()->as_FloatConstant();
aoqi@0:         FloatConstant* t2 = v->type()->as_FloatConstant();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 jint_cast(t1->value()) == jint_cast(t2->value()));
aoqi@0:       }
aoqi@0:     case doubleTag:
aoqi@0:       {
aoqi@0:         DoubleConstant* t1 =    type()->as_DoubleConstant();
aoqi@0:         DoubleConstant* t2 = v->type()->as_DoubleConstant();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 jlong_cast(t1->value()) == jlong_cast(t2->value()));
aoqi@0:       }
aoqi@0:     case objectTag:
aoqi@0:       {
aoqi@0:         ObjectType* t1 =    type()->as_ObjectType();
aoqi@0:         ObjectType* t2 = v->type()->as_ObjectType();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 t1->is_loaded() && t2->is_loaded() &&
aoqi@0:                 t1->constant_value() == t2->constant_value());
aoqi@0:       }
aoqi@0:     case metaDataTag:
aoqi@0:       {
aoqi@0:         MetadataType* t1 =    type()->as_MetadataType();
aoqi@0:         MetadataType* t2 = v->type()->as_MetadataType();
aoqi@0:         return (t1 != NULL && t2 != NULL &&
aoqi@0:                 t1->is_loaded() && t2->is_loaded() &&
aoqi@0:                 t1->constant_value() == t2->constant_value());
aoqi@0:       }
aoqi@0:   }
aoqi@0:   return false;
aoqi@0: }
aoqi@0: 
aoqi@0: Constant::CompareResult Constant::compare(Instruction::Condition cond, Value right) const {
aoqi@0:   Constant* rc = right->as_Constant();
aoqi@0:   // other is not a constant
aoqi@0:   if (rc == NULL) return not_comparable;
aoqi@0: 
aoqi@0:   ValueType* lt = type();
aoqi@0:   ValueType* rt = rc->type();
aoqi@0:   // different types
aoqi@0:   if (lt->base() != rt->base()) return not_comparable;
aoqi@0:   switch (lt->tag()) {
aoqi@0:   case intTag: {
aoqi@0:     int x = lt->as_IntConstant()->value();
aoqi@0:     int y = rt->as_IntConstant()->value();
aoqi@0:     switch (cond) {
aoqi@0:     case If::eql: return x == y ? cond_true : cond_false;
aoqi@0:     case If::neq: return x != y ? cond_true : cond_false;
aoqi@0:     case If::lss: return x <  y ? cond_true : cond_false;
aoqi@0:     case If::leq: return x <= y ? cond_true : cond_false;
aoqi@0:     case If::gtr: return x >  y ? cond_true : cond_false;
aoqi@0:     case If::geq: return x >= y ? cond_true : cond_false;
aoqi@0:     }
aoqi@0:     break;
aoqi@0:   }
aoqi@0:   case longTag: {
aoqi@0:     jlong x = lt->as_LongConstant()->value();
aoqi@0:     jlong y = rt->as_LongConstant()->value();
aoqi@0:     switch (cond) {
aoqi@0:     case If::eql: return x == y ? cond_true : cond_false;
aoqi@0:     case If::neq: return x != y ? cond_true : cond_false;
aoqi@0:     case If::lss: return x <  y ? cond_true : cond_false;
aoqi@0:     case If::leq: return x <= y ? cond_true : cond_false;
aoqi@0:     case If::gtr: return x >  y ? cond_true : cond_false;
aoqi@0:     case If::geq: return x >= y ? cond_true : cond_false;
aoqi@0:     }
aoqi@0:     break;
aoqi@0:   }
aoqi@0:   case objectTag: {
aoqi@0:     ciObject* xvalue = lt->as_ObjectType()->constant_value();
aoqi@0:     ciObject* yvalue = rt->as_ObjectType()->constant_value();
aoqi@0:     assert(xvalue != NULL && yvalue != NULL, "not constants");
aoqi@0:     if (xvalue->is_loaded() && yvalue->is_loaded()) {
aoqi@0:       switch (cond) {
aoqi@0:       case If::eql: return xvalue == yvalue ? cond_true : cond_false;
aoqi@0:       case If::neq: return xvalue != yvalue ? cond_true : cond_false;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     break;
aoqi@0:   }
aoqi@0:   case metaDataTag: {
aoqi@0:     ciMetadata* xvalue = lt->as_MetadataType()->constant_value();
aoqi@0:     ciMetadata* yvalue = rt->as_MetadataType()->constant_value();
aoqi@0:     assert(xvalue != NULL && yvalue != NULL, "not constants");
aoqi@0:     if (xvalue->is_loaded() && yvalue->is_loaded()) {
aoqi@0:       switch (cond) {
aoqi@0:       case If::eql: return xvalue == yvalue ? cond_true : cond_false;
aoqi@0:       case If::neq: return xvalue != yvalue ? cond_true : cond_false;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     break;
aoqi@0:   }
aoqi@0:   }
aoqi@0:   return not_comparable;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of BlockBegin
aoqi@0: 
aoqi@0: void BlockBegin::set_end(BlockEnd* end) {
aoqi@0:   assert(end != NULL, "should not reset block end to NULL");
aoqi@0:   if (end == _end) {
aoqi@0:     return;
aoqi@0:   }
aoqi@0:   clear_end();
aoqi@0: 
aoqi@0:   // Set the new end
aoqi@0:   _end = end;
aoqi@0: 
aoqi@0:   _successors.clear();
aoqi@0:   // Now reset successors list based on BlockEnd
aoqi@0:   for (int i = 0; i < end->number_of_sux(); i++) {
aoqi@0:     BlockBegin* sux = end->sux_at(i);
aoqi@0:     _successors.append(sux);
aoqi@0:     sux->_predecessors.append(this);
aoqi@0:   }
aoqi@0:   _end->set_begin(this);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::clear_end() {
aoqi@0:   // Must make the predecessors/successors match up with the
aoqi@0:   // BlockEnd's notion.
aoqi@0:   if (_end != NULL) {
aoqi@0:     // disconnect from the old end
aoqi@0:     _end->set_begin(NULL);
aoqi@0: 
aoqi@0:     // disconnect this block from it's current successors
aoqi@0:     for (int i = 0; i < _successors.length(); i++) {
aoqi@0:       _successors.at(i)->remove_predecessor(this);
aoqi@0:     }
aoqi@0:     _end = NULL;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::disconnect_edge(BlockBegin* from, BlockBegin* to) {
aoqi@0:   // disconnect any edges between from and to
aoqi@0: #ifndef PRODUCT
aoqi@0:   if (PrintIR && Verbose) {
aoqi@0:     tty->print_cr("Disconnected edge B%d -> B%d", from->block_id(), to->block_id());
aoqi@0:   }
aoqi@0: #endif
aoqi@0:   for (int s = 0; s < from->number_of_sux();) {
aoqi@0:     BlockBegin* sux = from->sux_at(s);
aoqi@0:     if (sux == to) {
aoqi@0:       int index = sux->_predecessors.index_of(from);
aoqi@0:       if (index >= 0) {
aoqi@0:         sux->_predecessors.remove_at(index);
aoqi@0:       }
aoqi@0:       from->_successors.remove_at(s);
aoqi@0:     } else {
aoqi@0:       s++;
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::disconnect_from_graph() {
aoqi@0:   // disconnect this block from all other blocks
aoqi@0:   for (int p = 0; p < number_of_preds(); p++) {
aoqi@0:     pred_at(p)->remove_successor(this);
aoqi@0:   }
aoqi@0:   for (int s = 0; s < number_of_sux(); s++) {
aoqi@0:     sux_at(s)->remove_predecessor(this);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void BlockBegin::substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux) {
aoqi@0:   // modify predecessors before substituting successors
aoqi@0:   for (int i = 0; i < number_of_sux(); i++) {
aoqi@0:     if (sux_at(i) == old_sux) {
aoqi@0:       // remove old predecessor before adding new predecessor
aoqi@0:       // otherwise there is a dead predecessor in the list
aoqi@0:       new_sux->remove_predecessor(old_sux);
aoqi@0:       new_sux->add_predecessor(this);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   old_sux->remove_predecessor(this);
aoqi@0:   end()->substitute_sux(old_sux, new_sux);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: // In general it is not possible to calculate a value for the field "depth_first_number"
aoqi@0: // of the inserted block, without recomputing the values of the other blocks
aoqi@0: // in the CFG. Therefore the value of "depth_first_number" in BlockBegin becomes meaningless.
aoqi@0: BlockBegin* BlockBegin::insert_block_between(BlockBegin* sux) {
aoqi@0:   int bci = sux->bci();
aoqi@0:   // critical edge splitting may introduce a goto after a if and array
aoqi@0:   // bound check elimination may insert a predicate between the if and
aoqi@0:   // goto. The bci of the goto can't be the one of the if otherwise
aoqi@0:   // the state and bci are inconsistent and a deoptimization triggered
aoqi@0:   // by the predicate would lead to incorrect execution/a crash.
aoqi@0:   BlockBegin* new_sux = new BlockBegin(bci);
aoqi@0: 
aoqi@0:   // mark this block (special treatment when block order is computed)
aoqi@0:   new_sux->set(critical_edge_split_flag);
aoqi@0: 
aoqi@0:   // This goto is not a safepoint.
aoqi@0:   Goto* e = new Goto(sux, false);
aoqi@0:   new_sux->set_next(e, bci);
aoqi@0:   new_sux->set_end(e);
aoqi@0:   // setup states
aoqi@0:   ValueStack* s = end()->state();
aoqi@0:   new_sux->set_state(s->copy(s->kind(), bci));
aoqi@0:   e->set_state(s->copy(s->kind(), bci));
aoqi@0:   assert(new_sux->state()->locals_size() == s->locals_size(), "local size mismatch!");
aoqi@0:   assert(new_sux->state()->stack_size() == s->stack_size(), "stack size mismatch!");
aoqi@0:   assert(new_sux->state()->locks_size() == s->locks_size(), "locks size mismatch!");
aoqi@0: 
aoqi@0:   // link predecessor to new block
aoqi@0:   end()->substitute_sux(sux, new_sux);
aoqi@0: 
aoqi@0:   // The ordering needs to be the same, so remove the link that the
aoqi@0:   // set_end call above added and substitute the new_sux for this
aoqi@0:   // block.
aoqi@0:   sux->remove_predecessor(new_sux);
aoqi@0: 
aoqi@0:   // the successor could be the target of a switch so it might have
aoqi@0:   // multiple copies of this predecessor, so substitute the new_sux
aoqi@0:   // for the first and delete the rest.
aoqi@0:   bool assigned = false;
aoqi@0:   BlockList& list = sux->_predecessors;
aoqi@0:   for (int i = 0; i < list.length(); i++) {
aoqi@0:     BlockBegin** b = list.adr_at(i);
aoqi@0:     if (*b == this) {
aoqi@0:       if (assigned) {
aoqi@0:         list.remove_at(i);
aoqi@0:         // reprocess this index
aoqi@0:         i--;
aoqi@0:       } else {
aoqi@0:         assigned = true;
aoqi@0:         *b = new_sux;
aoqi@0:       }
aoqi@0:       // link the new block back to it's predecessors.
aoqi@0:       new_sux->add_predecessor(this);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   assert(assigned == true, "should have assigned at least once");
aoqi@0:   return new_sux;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::remove_successor(BlockBegin* pred) {
aoqi@0:   int idx;
aoqi@0:   while ((idx = _successors.index_of(pred)) >= 0) {
aoqi@0:     _successors.remove_at(idx);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::add_predecessor(BlockBegin* pred) {
aoqi@0:   _predecessors.append(pred);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::remove_predecessor(BlockBegin* pred) {
aoqi@0:   int idx;
aoqi@0:   while ((idx = _predecessors.index_of(pred)) >= 0) {
aoqi@0:     _predecessors.remove_at(idx);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::add_exception_handler(BlockBegin* b) {
aoqi@0:   assert(b != NULL && (b->is_set(exception_entry_flag)), "exception handler must exist");
aoqi@0:   // add only if not in the list already
aoqi@0:   if (!_exception_handlers.contains(b)) _exception_handlers.append(b);
aoqi@0: }
aoqi@0: 
aoqi@0: int BlockBegin::add_exception_state(ValueStack* state) {
aoqi@0:   assert(is_set(exception_entry_flag), "only for xhandlers");
aoqi@0:   if (_exception_states == NULL) {
aoqi@0:     _exception_states = new ValueStackStack(4);
aoqi@0:   }
aoqi@0:   _exception_states->append(state);
aoqi@0:   return _exception_states->length() - 1;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::iterate_preorder(boolArray& mark, BlockClosure* closure) {
aoqi@0:   if (!mark.at(block_id())) {
aoqi@0:     mark.at_put(block_id(), true);
aoqi@0:     closure->block_do(this);
aoqi@0:     BlockEnd* e = end(); // must do this after block_do because block_do may change it!
aoqi@0:     { for (int i = number_of_exception_handlers() - 1; i >= 0; i--) exception_handler_at(i)->iterate_preorder(mark, closure); }
aoqi@0:     { for (int i = e->number_of_sux            () - 1; i >= 0; i--) e->sux_at           (i)->iterate_preorder(mark, closure); }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::iterate_postorder(boolArray& mark, BlockClosure* closure) {
aoqi@0:   if (!mark.at(block_id())) {
aoqi@0:     mark.at_put(block_id(), true);
aoqi@0:     BlockEnd* e = end();
aoqi@0:     { for (int i = number_of_exception_handlers() - 1; i >= 0; i--) exception_handler_at(i)->iterate_postorder(mark, closure); }
aoqi@0:     { for (int i = e->number_of_sux            () - 1; i >= 0; i--) e->sux_at           (i)->iterate_postorder(mark, closure); }
aoqi@0:     closure->block_do(this);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::iterate_preorder(BlockClosure* closure) {
aoqi@0:   boolArray mark(number_of_blocks(), false);
aoqi@0:   iterate_preorder(mark, closure);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::iterate_postorder(BlockClosure* closure) {
aoqi@0:   boolArray mark(number_of_blocks(), false);
aoqi@0:   iterate_postorder(mark, closure);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::block_values_do(ValueVisitor* f) {
aoqi@0:   for (Instruction* n = this; n != NULL; n = n->next()) n->values_do(f);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:    #define TRACE_PHI(code) if (PrintPhiFunctions) { code; }
aoqi@0: #else
aoqi@0:    #define TRACE_PHI(coce)
aoqi@0: #endif
aoqi@0: 
aoqi@0: 
aoqi@0: bool BlockBegin::try_merge(ValueStack* new_state) {
aoqi@0:   TRACE_PHI(tty->print_cr("********** try_merge for block B%d", block_id()));
aoqi@0: 
aoqi@0:   // local variables used for state iteration
aoqi@0:   int index;
aoqi@0:   Value new_value, existing_value;
aoqi@0: 
aoqi@0:   ValueStack* existing_state = state();
aoqi@0:   if (existing_state == NULL) {
aoqi@0:     TRACE_PHI(tty->print_cr("first call of try_merge for this block"));
aoqi@0: 
aoqi@0:     if (is_set(BlockBegin::was_visited_flag)) {
aoqi@0:       // this actually happens for complicated jsr/ret structures
aoqi@0:       return false; // BAILOUT in caller
aoqi@0:     }
aoqi@0: 
aoqi@0:     // copy state because it is altered
aoqi@0:     new_state = new_state->copy(ValueStack::BlockBeginState, bci());
aoqi@0: 
aoqi@0:     // Use method liveness to invalidate dead locals
aoqi@0:     MethodLivenessResult liveness = new_state->scope()->method()->liveness_at_bci(bci());
aoqi@0:     if (liveness.is_valid()) {
aoqi@0:       assert((int)liveness.size() == new_state->locals_size(), "error in use of liveness");
aoqi@0: 
aoqi@0:       for_each_local_value(new_state, index, new_value) {
aoqi@0:         if (!liveness.at(index) || new_value->type()->is_illegal()) {
aoqi@0:           new_state->invalidate_local(index);
aoqi@0:           TRACE_PHI(tty->print_cr("invalidating dead local %d", index));
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (is_set(BlockBegin::parser_loop_header_flag)) {
aoqi@0:       TRACE_PHI(tty->print_cr("loop header block, initializing phi functions"));
aoqi@0: 
aoqi@0:       for_each_stack_value(new_state, index, new_value) {
aoqi@0:         new_state->setup_phi_for_stack(this, index);
aoqi@0:         TRACE_PHI(tty->print_cr("creating phi-function %c%d for stack %d", new_state->stack_at(index)->type()->tchar(), new_state->stack_at(index)->id(), index));
aoqi@0:       }
aoqi@0: 
aoqi@0:       BitMap requires_phi_function = new_state->scope()->requires_phi_function();
aoqi@0: 
aoqi@0:       for_each_local_value(new_state, index, new_value) {
aoqi@0:         bool requires_phi = requires_phi_function.at(index) || (new_value->type()->is_double_word() && requires_phi_function.at(index + 1));
aoqi@0:         if (requires_phi || !SelectivePhiFunctions) {
aoqi@0:           new_state->setup_phi_for_local(this, index);
aoqi@0:           TRACE_PHI(tty->print_cr("creating phi-function %c%d for local %d", new_state->local_at(index)->type()->tchar(), new_state->local_at(index)->id(), index));
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // initialize state of block
aoqi@0:     set_state(new_state);
aoqi@0: 
aoqi@0:   } else if (existing_state->is_same(new_state)) {
aoqi@0:     TRACE_PHI(tty->print_cr("exisiting state found"));
aoqi@0: 
aoqi@0:     assert(existing_state->scope() == new_state->scope(), "not matching");
aoqi@0:     assert(existing_state->locals_size() == new_state->locals_size(), "not matching");
aoqi@0:     assert(existing_state->stack_size() == new_state->stack_size(), "not matching");
aoqi@0: 
aoqi@0:     if (is_set(BlockBegin::was_visited_flag)) {
aoqi@0:       TRACE_PHI(tty->print_cr("loop header block, phis must be present"));
aoqi@0: 
aoqi@0:       if (!is_set(BlockBegin::parser_loop_header_flag)) {
aoqi@0:         // this actually happens for complicated jsr/ret structures
aoqi@0:         return false; // BAILOUT in caller
aoqi@0:       }
aoqi@0: 
aoqi@0:       for_each_local_value(existing_state, index, existing_value) {
aoqi@0:         Value new_value = new_state->local_at(index);
aoqi@0:         if (new_value == NULL || new_value->type()->tag() != existing_value->type()->tag()) {
aoqi@0:           // The old code invalidated the phi function here
aoqi@0:           // Because dead locals are replaced with NULL, this is a very rare case now, so simply bail out
aoqi@0:           return false; // BAILOUT in caller
aoqi@0:         }
aoqi@0:       }
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0:       // check that all necessary phi functions are present
aoqi@0:       for_each_stack_value(existing_state, index, existing_value) {
aoqi@0:         assert(existing_value->as_Phi() != NULL && existing_value->as_Phi()->block() == this, "phi function required");
aoqi@0:       }
aoqi@0:       for_each_local_value(existing_state, index, existing_value) {
aoqi@0:         assert(existing_value == new_state->local_at(index) || (existing_value->as_Phi() != NULL && existing_value->as_Phi()->as_Phi()->block() == this), "phi function required");
aoqi@0:       }
aoqi@0: #endif
aoqi@0: 
aoqi@0:     } else {
aoqi@0:       TRACE_PHI(tty->print_cr("creating phi functions on demand"));
aoqi@0: 
aoqi@0:       // create necessary phi functions for stack
aoqi@0:       for_each_stack_value(existing_state, index, existing_value) {
aoqi@0:         Value new_value = new_state->stack_at(index);
aoqi@0:         Phi* existing_phi = existing_value->as_Phi();
aoqi@0: 
aoqi@0:         if (new_value != existing_value && (existing_phi == NULL || existing_phi->block() != this)) {
aoqi@0:           existing_state->setup_phi_for_stack(this, index);
aoqi@0:           TRACE_PHI(tty->print_cr("creating phi-function %c%d for stack %d", existing_state->stack_at(index)->type()->tchar(), existing_state->stack_at(index)->id(), index));
aoqi@0:         }
aoqi@0:       }
aoqi@0: 
aoqi@0:       // create necessary phi functions for locals
aoqi@0:       for_each_local_value(existing_state, index, existing_value) {
aoqi@0:         Value new_value = new_state->local_at(index);
aoqi@0:         Phi* existing_phi = existing_value->as_Phi();
aoqi@0: 
aoqi@0:         if (new_value == NULL || new_value->type()->tag() != existing_value->type()->tag()) {
aoqi@0:           existing_state->invalidate_local(index);
aoqi@0:           TRACE_PHI(tty->print_cr("invalidating local %d because of type mismatch", index));
aoqi@0:         } else if (new_value != existing_value && (existing_phi == NULL || existing_phi->block() != this)) {
aoqi@0:           existing_state->setup_phi_for_local(this, index);
aoqi@0:           TRACE_PHI(tty->print_cr("creating phi-function %c%d for local %d", existing_state->local_at(index)->type()->tchar(), existing_state->local_at(index)->id(), index));
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     assert(existing_state->caller_state() == new_state->caller_state(), "caller states must be equal");
aoqi@0: 
aoqi@0:   } else {
aoqi@0:     assert(false, "stack or locks not matching (invalid bytecodes)");
aoqi@0:     return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   TRACE_PHI(tty->print_cr("********** try_merge for block B%d successful", block_id()));
aoqi@0: 
aoqi@0:   return true;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: void BlockBegin::print_block() {
aoqi@0:   InstructionPrinter ip;
aoqi@0:   print_block(ip, false);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockBegin::print_block(InstructionPrinter& ip, bool live_only) {
aoqi@0:   ip.print_instr(this); tty->cr();
aoqi@0:   ip.print_stack(this->state()); tty->cr();
aoqi@0:   ip.print_inline_level(this);
aoqi@0:   ip.print_head();
aoqi@0:   for (Instruction* n = next(); n != NULL; n = n->next()) {
aoqi@0:     if (!live_only || n->is_pinned() || n->use_count() > 0) {
aoqi@0:       ip.print_line(n);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   tty->cr();
aoqi@0: }
aoqi@0: #endif // PRODUCT
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of BlockList
aoqi@0: 
aoqi@0: void BlockList::iterate_forward (BlockClosure* closure) {
aoqi@0:   const int l = length();
aoqi@0:   for (int i = 0; i < l; i++) closure->block_do(at(i));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockList::iterate_backward(BlockClosure* closure) {
aoqi@0:   for (int i = length() - 1; i >= 0; i--) closure->block_do(at(i));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockList::blocks_do(void f(BlockBegin*)) {
aoqi@0:   for (int i = length() - 1; i >= 0; i--) f(at(i));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockList::values_do(ValueVisitor* f) {
aoqi@0:   for (int i = length() - 1; i >= 0; i--) at(i)->block_values_do(f);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: void BlockList::print(bool cfg_only, bool live_only) {
aoqi@0:   InstructionPrinter ip;
aoqi@0:   for (int i = 0; i < length(); i++) {
aoqi@0:     BlockBegin* block = at(i);
aoqi@0:     if (cfg_only) {
aoqi@0:       ip.print_instr(block); tty->cr();
aoqi@0:     } else {
aoqi@0:       block->print_block(ip, live_only);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: #endif // PRODUCT
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of BlockEnd
aoqi@0: 
aoqi@0: void BlockEnd::set_begin(BlockBegin* begin) {
aoqi@0:   BlockList* sux = NULL;
aoqi@0:   if (begin != NULL) {
aoqi@0:     sux = begin->successors();
aoqi@0:   } else if (this->begin() != NULL) {
aoqi@0:     // copy our sux list
aoqi@0:     BlockList* sux = new BlockList(this->begin()->number_of_sux());
aoqi@0:     for (int i = 0; i < this->begin()->number_of_sux(); i++) {
aoqi@0:       sux->append(this->begin()->sux_at(i));
aoqi@0:     }
aoqi@0:   }
aoqi@0:   _sux = sux;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void BlockEnd::substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux) {
aoqi@0:   substitute(*_sux, old_sux, new_sux);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of Phi
aoqi@0: 
aoqi@0: // Normal phi functions take their operands from the last instruction of the
aoqi@0: // predecessor. Special handling is needed for xhanlder entries because there
aoqi@0: // the state of arbitrary instructions are needed.
aoqi@0: 
aoqi@0: Value Phi::operand_at(int i) const {
aoqi@0:   ValueStack* state;
aoqi@0:   if (_block->is_set(BlockBegin::exception_entry_flag)) {
aoqi@0:     state = _block->exception_state_at(i);
aoqi@0:   } else {
aoqi@0:     state = _block->pred_at(i)->end()->state();
aoqi@0:   }
aoqi@0:   assert(state != NULL, "");
aoqi@0: 
aoqi@0:   if (is_local()) {
aoqi@0:     return state->local_at(local_index());
aoqi@0:   } else {
aoqi@0:     return state->stack_at(stack_index());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: int Phi::operand_count() const {
aoqi@0:   if (_block->is_set(BlockBegin::exception_entry_flag)) {
aoqi@0:     return _block->number_of_exception_states();
aoqi@0:   } else {
aoqi@0:     return _block->number_of_preds();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: // Constructor of Assert
aoqi@0: Assert::Assert(Value x, Condition cond, bool unordered_is_true, Value y) : Instruction(illegalType)
aoqi@0:   , _x(x)
aoqi@0:   , _cond(cond)
aoqi@0:   , _y(y)
aoqi@0: {
aoqi@0:   set_flag(UnorderedIsTrueFlag, unordered_is_true);
aoqi@0:   assert(x->type()->tag() == y->type()->tag(), "types must match");
aoqi@0:   pin();
aoqi@0: 
aoqi@0:   stringStream strStream;
aoqi@0:   Compilation::current()->method()->print_name(&strStream);
aoqi@0: 
aoqi@0:   stringStream strStream1;
aoqi@0:   InstructionPrinter ip1(1, &strStream1);
aoqi@0:   ip1.print_instr(x);
aoqi@0: 
aoqi@0:   stringStream strStream2;
aoqi@0:   InstructionPrinter ip2(1, &strStream2);
aoqi@0:   ip2.print_instr(y);
aoqi@0: 
aoqi@0:   stringStream ss;
aoqi@0:   ss.print("Assertion %s %s %s in method %s", strStream1.as_string(), ip2.cond_name(cond), strStream2.as_string(), strStream.as_string());
aoqi@0: 
aoqi@0:   _message = ss.as_string();
aoqi@0: }
aoqi@0: #endif
aoqi@0: 
aoqi@0: void RangeCheckPredicate::check_state() {
aoqi@0:   assert(state()->kind() != ValueStack::EmptyExceptionState && state()->kind() != ValueStack::ExceptionState, "will deopt with empty state");
aoqi@0: }
aoqi@0: 
aoqi@0: void ProfileInvoke::state_values_do(ValueVisitor* f) {
aoqi@0:   if (state() != NULL) state()->values_do(f);
aoqi@0: }