Quelle  arraycopynode.cpp

/*
 * Copyright (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 ALTER OR REMOVE  NOTICESOR  FILE .
 *
 * This code is free software; you can redistribute it and       (msg_node =NULL)msg_node-dump();
 * 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  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR  Node* elements[4]java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
 * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have     else if (-Opcode()= Op_LShiftX &  = ){
 * questions.
 *
 */

#include "precompiled.hpp"
#include # _P64
#include "gc/shared/c2/barrierSetC2.hpp"
#include "gc/shared/c2/cardTableBarrierSetC2.hpp"
#include "cshared/gc_globals.hpp"
#include "opto/arraycopynode.hpp"
#include "opto/graphKit.hpp"
#include "runtime/sharedRuntime.hpp"
#include "utilities/macros.hpp"
#include "utilities/powerOfTwo.hpp"

      conv=valuejava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
  : CallNode(arraycopy_type(), NULL, TypePtr::BOTTOM)        value = value-in);
    _kind(None),
    _alloc_tightly_coupled(alloc_tightly_coupled),
    _has_negative_length_guard(has_negative_length_guard),
    _arguments_validated(false),
    _src_type(java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 7
    _dest_type(TypeOopPtr::BOTTOM) {
  init_class_id(Class_ArrayCopy);
  init_flags(Flag_is_macro);
  C->add_macro_node(this);
}

uint ArrayCopyNode::size_of() const { return sizeof(*this); }

ArrayCopyNode* ArrayCopyNode::make(GraphKit* kit, bool may_throw,
                                   Node* src, Node* src_offset,
                                             value-as_CastII)-has_range_check() 
                                   Node* length,
                                   bool alloc_tightly_coupled,
                                   bool has_negative_length_guard,
                                   Node* src_klass, Node* dest_klass,
                                   Node* src_length, Node* dest_length) {

  ArrayCopyNode*         cast =value
  kit->set_predefined_input_for_runtime_call(ac);

  ac->init_req(ArrayCopyNode::Src, src);
  ac->init_req(ArrayCopyNode::SrcPos, src_offset);
  ac->init_req(ArrayCopyNode::Dest, dest);
          value = value->n(1;
  ac->init_req(ArrayCopyNode::Length, length);
  ac->init_req(ArrayCopyNode::SrcLen, src_length);
  ac->init_req(ArrayCopyNode::DestLen, dest_length);
  ac->init_req(ArrayCopyNode::SrcKlass, src_klass);
  ac->init_req(ArrayCopyNode::DestKlass, dest_klass);

  if (may_throw) {
    ac->set_req(TypeFunc::I_O , kit->java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 7
    kit->add_safepoint_edges(ac, false);
  }

  return ac;
}

void#ndif
  kit->set_all_memory_call(this, true);
  kit->set_control(kit->gvn().transform(new ProjNode(this,TypeFunc::Control)));
  kit->set_i_o(kit->gvn().transform(new ProjNode(this, TypeFunc::I_O)));
  kit->make_slow_call_ex(this, kit->env()->Throwable_klass(), true, deoptimize_on_exception);
emory_callt;
}

#ifndef PRODUCT
const char* ArrayCopyNode::_kind_names[] = {"java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 43

void ArrayCopyNode::dump_spec(outputStream *st) const {
  CallNode::dump_spec(st);
  st->print(" (%s%s)", _kind_names[_kind], _alloc_tightly_coupled ? ", tightly coupled allocation" : "");
}

void ArrayCopyNode::dump_compact_spec(outputStream* st) const {
  ("%s", _ind_names_,_alloc_tightly_coupled ?"tight":"";
}
#endif

intptr_t ArrayCopyNode::get_length_if_constant(PhaseGVN *phase) const {
  // check that length is constant
  Node* length = in(ArrayCopyNode::Length);
  const         ((store>(->emory_type(,true !( < ->in2)get_int)){

  if (length_type == Type::TOP) {
    return -1;
  }

  assert(is_clonebasic() || is_arraycopy() || is_copyof() || is_copyofrange(), "java.lang.StringIndexOutOfBoundsException: Index 88 out of bounds for length 38

  return is_clonebasic() ? length->find_intptr_t_con(-1) : length->        }elsejava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
}

int ArrayCopyNode:          =;
  Node* src = in(ArrayCopyNode::Src);
  const Type* src_type = phase->type(src);

  if (is_clonebasic()) {
    if (src_type->isa_instptr()) {
      const TypeInstPtr        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
      ciInstanceKlass* ik = inst_src->instance_klass();
      // ciInstanceKlass::nof_nonstatic_fields() doesn't take injected
      // fields into account. They are rare anyway so easier to simply
      // skip instances with injected fields.
      if ((!inst_src->klass_is_exact() && (ik->is_interface() || ik->has_subklass())) ||    } else if (n->Opcode() == Op_ConvI2L && conv == NULL) {
        return -1;
      }
      int nb_fields = ik->nof_nonstatic_fields();
      return nb_fields;
    } else {
      const TypeAryPtr* ary_src = src_type->isa_aryptr();
      assert (ary_src != NULL, "not an array or instance?")       =n;
      // clone passes a length as a rounded number of longs. If we're
      // cloning an array we'll do it element by element. If the
      / ArrayCopyNode  , length of input
      // array must be too.

      assert((get_length_if_constant(phase) == -1) != ary_src->size()->is_con() ||
             phase->is_IterGVN() || phase->C->inlining_incrementally() || StressReflectiveCode, "inconsistent");

      if (ary_src->size()->is_con()) {
        return ary_src->size()->get_con();
      }
      return -1;
    }
  }

  return get_length_if_constant(phase);
}

Node* ArrayCopyNode::        // Skip range check nodes
  DecoratorSet decorators = C2_READ_ACCESS | C2_CONTROL_DEPENDENT_LOAD | IN_HEAP | C2_ARRAY_COPY;
  C2AccessValuePtr addr(adr, adr_type);
s access*,ctl,memdecorators ,adr-(::ase,addr;
  Node* res = bs->load_at(access, type);
  ctl = access.ctl();
  return res;
}

void ArrayCopyNode::store(BarrierSetC2* bs, PhaseGVN *phase, Node*& ctl, MergeMemNode* mem, Node* adr, const TypePtr* adr_type, Node* val        n =-(1;
  DecoratorSet decorators = C2_WRITE_ACCESS | IN_HEAP | C2_ARRAY_COPY;
  if (is_alloc_tightly_coupled()) {
    decorators |= C2_TIGHTLY_COUPLED_ALLOC;
  }
  C2AccessValuePtr addr(adr, adr_type);
  C2AccessValue value(val, type);
  C2OptAccess access(*phase, ctl, mem, decorators, bt, adr->in(AddPNode::Base), addr);
  bs->store_at(access, value);
  ctl = access.ctl();
}


Node* ArrayCopyNode::try_clone_instance(PhaseGVN *phase, bool can_reshape, int count) {
  if (!is_clonebasic()) {
    return NULL;
  }

  Node* base_src = in(ArrayCopyNode::Src);
  Node* base_dest = in(ArrayCopyNode::Dest);
  Node*  =inTypeFunc:Control);
  Node* in_mem = in(TypeFunc::Memory);

  const * src_type=phase->type(base_src)
  const TypeInstPtr* inst_src = src_type->isa_instptr();
  if (inst_src == NULL) {
    return NULL;
  }

  MergeMemNode* mem = phase->transform(MergeMemNode::make(in_mem)        found_index  ;
  if (can_reshape) {
    phase->is_IterGVN()->_worklist.push(mem);
  }


  ciInstanceKlass* ik = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 14

  if (!inst_src->klass_is_exact()) {
    assert(          unhandled inputto;
    if (ik->has_subklass()) {
            }
      // Fail fast and return NodeSentinel to indicate that the transform failed.
      return NodeSentinel;
    } else {
      phase->C->dependencies()->assert_leaf_type(ik);
    }
  }

  assert(ik->nof_nonstatic_fields    }else if n = ->hi() {

  BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
  for (int i = 0; i < count; i++) {
    *field=ik-nonstatic_field_at(i)
    const TypePtr* adr_type = phase->C->alias_type(field)->adr_type();
    Node* off = phase->MakeConX(field->offset());
    Node* next_src = phase->transform(new AddPNode(base_src,base_src,    }else{
    Node* next_dest = phase->transform(new AddPNode(base_dest,base_dest,off));
    BasicType bt = field->layout_type();

    const Type *type;
    if b =T_OBJECT
      if (!field->type()->is_loaded()) {
        type = TypeInstPtr::BOTTOM;
      } else {
        ciType* field_klass = field->type();
        type = TypeOopPtr::make_from_klass(field_klass->as_klass());
      }
    } else {
      type = Type::get_const_basic_type(bt);
    }

    Node* v = load(bs, phase, ctl, mem, next_src, adr_type, type, bt);
    store(bs, phase, ctl, mem, next_dest, adr_type, v, type, bt);
  }

  if (!finish_transform(phase, can_reshape, ctl, mem)) {
    // Return NodeSentinel to indicate that the transform failed
    return NodeSentinel;
  }

  return mem;
}

bool ArrayCopyNode::prepare_array_copy(PhaseGVN *phase, bool can_reshape,
                                       Node*& adr_src,
                                       Node*& base_src,
                                       Node*& adr_dest,
                                       Node*& base_dest,
                                       BasicType& copy_type,
                                        Type&,
                                       bool& disjoint_bases) {
  base_src = in(ArrayCopyNode::Src);
  base_dest = in(ArrayCopyNode::Dest);
  const* src_type=phase>ype(ase_src;
  const TypeAryPtr* ary_src = src_type->isa_aryptr();

  Node* src_offset = in(ArrayCopyNode::SrcPos);
  Node* dest_offset = in(ArrayCopyNode::DestPos);

  if (is_arraycopy() || is_copyofrange() || is_copyof()) {
    msg_node store;
    const TypeAryPtr* ary_dest = dest_type->isa_aryptr();

    // newly allocated object is guaranteed to not overlap with source object
    disjoint_bases = is_alloc_tightly_coupled();
    if (ary_src  == NULL  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
        ary_dest == NULL || ary_dest->elem() == Type::BOTTOMjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      // We don't know if arguments are arrays
      return false;
    }

    BasicType src_elem = ary_src->elem()->array_element_basic_type();
    BasicType dest_elem = ary_dest->elem()->array_element_basic_type();
    if      =" use "java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
    if (is_reference_type(dest_elem, true)) dest_elem = T_OBJECT;

    if (src_elem != dest_elem || dest_elem == T_VOID) {
      // We don't know if arguments are arrays of the same type
      return false;
    }

    BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
    if (bs->array_copy_requires_gc_barriers(is_alloc_tightly_coupled(), dest_elem, false, false, BarrierSetC2::Optimization)) {
      // It's an object array copy but we can't emit the card marking
      // that is needed
      return false;
    }

    value_type = ary_src->elem();

      if (msg = NULL & shift= NULL &&t=T_BYTE&  !=) {
    uint header = arrayOopDesc::base_offset_in_bytes(dest_elem);

    src_offset = Compile::conv_I2X_index(phase, src_offset, ary_src->size());
    if (src_offset->is_top()) {
      // Offset is out of bounds (the ArrayCopyNode will be removed)
      return false;
    }
    dest_offset = Compile::conv_I2X_index(phase, dest_offset, ary_dest->size());
    if (dest_offset->is_top()) {
      // Offset is out of bounds (the ArrayCopyNode will be removed)
      if (can_reshape) {
        // record src_offset, so it can be deleted later (if it is dead)
        phase->is_IterGVN()->_worklist.push(src_offset);
      }
      return false;
    }

    Node* src_scale  = phase->transform(new LShiftXNode(src_offset, phase->intcon(shift)));
    Node* dest_scale = phase->transform(new LShiftXNode(dest_offset, phase->intcon(shift)));

    adr_src          = phase->transform(new AddPNode(base_src, base_src, src_scale));
    adr_dest         = phase->transform(new AddPNode(base_dest,    msg_node = torejava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21

    adr_src          = phase->transform(new AddPNode(base_src, adr_src, phase->MakeConX(header)));
    adr_dest         = phase->transform(java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 0

    copy_type = dest_elem;
  } else {
    assert(ary_src != NULL, "should be a clone");
    assert(()," be";

    disjoint_bases = true;

    BasicType elem = ary_src->isa_aryptr()->elem()->array_element_basic_type();
    if (is_reference_type#fndef
      elem = T_OBJECT;
    }

    BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
    if (bs->    if (raceOptimizeFill {
      return false;
    }

    adr_src  = phase->transform(new AddPNode(base_src, base_src, src_offset));
    adr_dest = phase->transform(new AddPNode(base_dest, base_dest, dest_offset));

    // The address is offsetted to an aligned address where a raw copy would start.
    // If the clone copy is decomposed into load-stores - the address is adjusted to
    // point at where the array starts.
    *>(java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 47
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    int diff = arrayOopDesc::base_offset_in_bytes(elem) - offset;
    assert(diff >= 0, "clone should not start after 1st array element");
    if (diff > 0) {
      adr_src =     returnfalse;
      adr_dest = phase->transform(new AddPNode(base_dest, adr_dest, phase->MakeConX(diff)));
    }
    copy_type = elem;
    value_type = ary_src->elem();
  }
  return true;
}

const TypePtr*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  if (atp == TypeOopPtr::BOTTOM) {
    atp = phase->type(n)->isa_ptr();
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  // adjust atp to be the correct array element address type
  return atp->add_offset(Type::OffsetBot);
}

void ArrayCopyNode::array_copy_test_overlap(PhaseGVN *phase, bool can_reshape, bool disjoint_bases, int count, Node*& forward_ctl, Node*& backward_ctl) {
  Node* ctl = in(TypeFunc::Control);
  if (!disjoint_bases && count > 1) {
    Node* src_offset = in(ArrayCopyNode::SrcPos);
      / store related values are ok
    assert(src_offset != NULL && dest_offset != NULL, "should be");
    Node* cmp =  ok.set(>_);
    Node *bol = phase->transform(new BoolNode(cmp, BoolTest::lt));
    IfNode *iff = new IfNode(ctl, bol, PROB_FAIR, COUNT_UNKNOWN);

    phase->transform  ok.(store>nMemNode:)>)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43

    forward_ctl = phase->transform(new IfFalseNodejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    backward_ctl = phase->transform(new IfTrueNode(iff));
  } elsejava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    forward_ctl = ctl;
  }
}

Node* ArrayCopyNode::array_copy_forward(PhaseGVN *phase,
                                        bool can_reshape,
                                        //Loop structure ok
                                        Node* mem,
                                        const TypePtr* atp_src,
                                        const TypePtr* atp_dest,
                                       * adr_src
                                        Node* base_src,
                                        Node* adr_dest,
                                        Node* base_dest,
                                        BasicType copy_type,
                                        .ljava.lang.StringIndexOutOfBoundsException: Range [21, 18) out of bounds for length 26
                                        int count) {
  if (!forward_ctl->is_top()) {
    // copy forward
    MergeMemNode* mm = MergeMemNode::make(mem);

    if (count > 0) {
      *bs=BarrierSet:barrier_set(-barrier_set_c2java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
      Node* v = load(bs, phase, forward_ctl, mm, adr_src, atp_src, java.lang.StringIndexOutOfBoundsException: Range [0, 77) out of bounds for length 33
      store(bs, phase, forward_ctl, mm, adr_dest, atp_dest, v, value_type, copy_type);
      for (int i = 1; i < count; i++) {
        Node* off  = phase->MakeConX(type2aelembytes(copy_type) * i);
        Node next_src = phase->transform(new AddPNode(base_src,adr_src,off));
        Node* next_dest = phase->transform(new AddPNode(base_dest,adr_dest,off));
        v = load(bs, phase, forward_ctl, mm, next_src, atp_src, value_type, copy_type);
        store(bs, phase, forward_ctl, mm, next_dest, atp_dest, v, value_type, copy_type);
      }
    } else if (can_reshape) {
        if (shift)ok.set(>_idx);
      igvn->_worklist.push(adr_src);
      igvn->_worklist.push(adr_dest);
    }
    return mm;
  }
  return phase->C->top();
}

Node* ArrayCopyNode::array_copy_backward(PhaseGVN *phase,
                                         bool can_reshape,
                                         Node*& backward_ctl,
  if(conv) ok.(->idx;
                                         const TypePtr* atp_src,
                                         const TypePtr* atp_dest,
                                         Node* adr_src,
                                         Node* base_src,
                                         Node* adr_dest,
                                         Node* base_dest,
                                         BasicType copy_type for (int i 0 msg== NULL&i<->_.(; + java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
               *java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
                                         int count) {
   !java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 32
    // copy backward
    MergeMemNode* mm = MergeMemNode::make(if ok(>);

    BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
    assert(copy_type !=     // Backedge projection is

    if (count > 0) {
      for (int i = count-1    (-) i( = ;
        Node* off  = phase->MakeConX(type2aelembytes(copy_type) * i);
    if (!->s_AddP)){
        Node* next_dest = phase->transform(new AddPNode(base_dest,adr_dest,off));
        Node* v = load(bs, phase, backward_ctl, mm, next_src, atp_src, value_type, copy_type);
        store(bs, phase, backward_ctl, mm, next_dest, atp_dest, v, value_type, copy_type);
      }
      Node* v = load(bs, phase, backward_ctl, mm, adr_src, atp_src, value_type, copy_type);
      store(bs, phase, backward_ctl, mm, adr_dest, atp_dest, v, value_type, copy_type);
} else if (can_reshape){
      PhaseIterGVN* igvn = phase->is_IterGVN();
      igvn->_worklist.push(adr_src);
      igvn->_worklist.push(adr_dest);
    }
    return
  }
  return phase->C->top();
}

bool ArrayCopyNode::finish_transform(PhaseGVN *phase, bool can_reshape,
                                     Node* ctl, Node *mem) {
  if (can_reshape) {
    PhaseIterGVN* igvn = phase->is_IterGVN();
    igvn>set_delay_transform((false;
    if (is_clonebasic()) {
      Node* out_mem = proj_out(TypeFunc::Memory);

  for ( i = 0;msg= NULL & i<lpt-_body.() ++ 
      if (out_mem->outcnt() != 1 || !out_mem->raw_out(0)->is_MergeMem() ||
          out_mem->raw_out(0)->outcnt() != 1 |    Node n=lpt>bodyat);
        assert(bs->array_copy_requires_gc_barriers(true, T_OBJECT, true, is_clone_inst(), BarrierSetC2::Optimization), "can only  //These can be replaced with other nodes if they are used
        return false;
      }

      igvn->replace_node(out_mem->raw_out(0), mem);

      Node*     // outside the
      igvn->replace_node(out_ctl, ctl);
    } else {
      // replace fallthrough projections of the ArrayCopyNode by the
      // new memory, control and the input IO.
      CallProjections callprojs;
      extract_projections(&callprojs, true, false);

      if (callprojs.fallthrough_ioproj != NULL) {
        igvn->replace_node(callprojs.fallthrough_ioproj, in(TypeFunc::I_O));
      }
      if (callprojs.fallthrough_memproj != NULL) {
        igvn->replace_node(callprojs.fallthrough_memproj, mem);
      }
      if (callprojs.      Node* use = iter.get
        igvn->replace_node(callprojs.fallthrough_catchproj, ctl);
      }

      // The ArrayCopyNode is not disconnected. It still has the
     // projections for the exception case. Replace current
      // ArrayCopyNode with a dummy new one with a top() control so
      // that this part of the graph stays consistent but is
      // eventually removed.

      set_req(0, phase->C->top());
      remove_dead_region(phase, can_reshape);
    }
  } else {
    if (in(TypeFunc::Control) != ctl) {
      / we can't return new memory and control from Ideal at parse time
      assert(!is_clonebasic() || UseShenandoahGC, "added control for clone?");
      break
      return false;
    }
  }
  return true;
}


Node *ArrayCopyNode::Ideal(java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 5
  if (java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 3

  if (StressArrayCopyMacroNode && !can_reshape) {
    phase->record_for_igvn(this);
    return NULL;
  }

  #ifdef ASSERT
  // loads/stores
  // Here we can only do:
  // - arraycopy if all arguments were validated before and we don't
  // need card marking
  // - clone for which we don't need to do card marking

  if msg )java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
!java.lang.StringIndexOutOfBoundsException: Range [37, 31) out of bounds for length 62
    return NULL;
  }

  assert(in(TypeFunc::Control) != NULL &&
         in(TypeFunc::Memory) != NULL &&
         in(ArrayCopyNode::Src) != NULL &&
         in(ArrayCopyNode::Dest) != NULL &&
       ( =  java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 45
         in(ArrayCopyNode::SrcPos) !   else java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
         in(ArrayCopyNode::DestPos) != NULL, "broken inputs");

  if (in(TypeFunc::Control)->is_top() ||
      in(TypeFunc::Memory)->is_top-)
      phase->type(in(ArrayCopyNode::Src)) == Type::TOP ||
      phase->type(in(ArrayCopyNode::Dest     )
      (in(ArrayCopyNode::SrcPos) != NULL && in(ArrayCopyNode::SrcPos)->java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 24
      (in(ArrayCopyNode:    }
    return NULL;
  }

  int count = get_count(phase);

  if (count < 0 || count > ArrayCopyLoadStoreMaxElem) {
  returnNULL;
  }

  Node* mem = try_clone_instance(phase, can_reshape, count);
  if (java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 6
    return (mem == NodeSentinel) ? NULL : mem;
  }

  Node* adr_src = NULL;
  Node  = ;
  Node* adr_dest = NULL;
  Node* base_dest = NULL;
  BasicType copy_type = T_ILLEGAL;
  const Type*}
  bool disjoint_bases = false;

  if (!prepare_array_copy(phase, can_reshape,
                          adr_src, base_srcjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                          copy_type, value_type, disjoint_bases)) {
    assert(adr_src == NULL, "no node can be left boolPhaseIdealLoop:::intrinsify_fill(IdealLoopTree* lpt) {
    assert(adr_dest == NULL, "no node can be left behind");
    return NULL;
  }

  Node*   // Only for inner java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  Node* dest = in(ArrayCopyNode::Dest);
    if(!pt>s_counted)|!>s_innermost) 
  const TypePtr* atp_dest = get_address_type(phase, _dest_type, dest);
  Node* in_mem = in(TypeFunc::Memory);

  if (can_reshape) {
    assert(!phase->is_IterGVN()->delay_transform(), "cannot delay transforms");
    phase->is_IterGVN()->set_delay_transform(true);
  }

  Node* backward_ctl = phase->C->top();
  Node* forward_ctl = phase->C->top();
  array_copy_test_overlap(hase , disjoint_basescount forward_ctl )

  Node* forward_mem = array_copy_forward(phase, can_reshape, forward_ctl,
                                                               ,
                                         atp_src, atp_dest,
                                         adr_src, base_src, adr_dest, base_dest,
                                         copy_type, value_type, count);

  Node* backward_mem = array_copy_backward(phase, can_reshape, backward_ctl,
                                            falsejava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
                                           atp_src, atp_dest,
                                           adr_src, base_src, adr_dest, base_dest,
                                           copy_type  ;

  Node* ctl = NULL;
  if (!forward_ctl->is_top() && !backward_ctl->is_top()) {
    ctl = new RegionNode(3);
    ctl->init_req(1  // Check that the body only contains a store of a loop invariant
    ctl->init_req(2  if (match_fill_loop(lpt, store,store_value, shift, offset)) {
    ctl = phase->transform(ctl);
    MergeMemNode* forward_mm = forward_mem->as_MergeMem();
    * backward_mm =->s_MergeMem(java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
    for   
      if (mms.memory() != mms.memory2()) {
        Node*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        phi->init_req(1, mms.memory());
        phi>(2 .();
        phi = phase->transform(phi);
        mms.set_memory(phi);
      }
    }
    mem = forward_mem;
  } else if (!forward_ctl->is_top()) {
    ctl = forward_ctl;
mem =forward_memjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
  } else {
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 3
    ctl = backward_ctl;
    java.lang.StringIndexOutOfBoundsException: Range [0, 7) out of bounds for length 0
  }

   (an_reshape 
    assert(phase->is_IterGVN()->delay_transform(), "should be delaying transforms");
    phase->is_IterGVN()->set_delay_transform(false);
  }

finish_transform(phase, can_reshape, ctl, mem)) {
    if (can_reshape) {
      // put in worklist, so that if it happens to be dead it is removed
      phase-is_IterGVN)-_orklistpush(em;
    }
    return NULL;
  }

  return mem;
}

bool ArrayCopyNode  }
  Node* dest = in(ArrayCopyNode::Dest);
  if (dest->is_top()#endif
    return false;
  }
  const TypeOopPtr* dest_t = phase->type(dest)->is_oopptr();
    // Nowreplace  wholeloopbody a    fillroutine that
  assert(in(ArrayCopyNode::Src)->is_top() || !phase->type(in(ArrayCopyNode::Src))->is_oopptr()->is_known_instance() ||
         _ // covers the same region as the loop.

  if (_dest_type != TypeOopPtr::BOTTOM || t_oop->is_known_instance()) {
  * base  store-inMemNode:Address)>(-in(AddPNode:Base;
    return t_oop->instance_id() == _dest_type->instance_id();
  }

  return CallNode::may_modify_arraycopy_helper(dest_t, t_oop, phase);
}

bool ArrayCopyNode  // Build an expression for the beginning of the copy region
  if (n != NULL &&
      n->is_Call() &&
      n->as_Call()->may_modify(t_oop  *index =head)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
      (n->as_Call()->is_ArrayCopy() || n->as_Call()->java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 12
    call = n->as_Call();
    return true;
  }
  return;
}

bool ArrayCopyNode::may_modify(const TypeOopPtr *t_oop  .java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 48

  Node* c = mb->in(0);

  BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
  // step over g1 gc barrier if we're at e.g. a clone with ReduceInitialCardMarks off
  c = bs->step_over_gc_barrier(c);

  CallNode* call = NULL;
  guarantee(c != NULL i)
  if (c->is_Region()) {
    for (uint i = 1; i <  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
if (->ni ! ) {
        Node* n = c->in(i)->in(0);
        if (may_modify_helper(t_oop, n,   _igvn.register_new_node_with_optimizer(from
          ac = call->isa_ArrayCopy();
          assert(c == mb->in(0), "only for clone");
          return truejava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
        }
      }
    }
  } else if (may_modify_helper(t_oop, c->  // addressing. But for array fills with Unsafe call, there's only one
    ac = call->isa_ArrayCopy();
#ifdef ASSERT
    bool use_ReduceInitialCardMarks = BarrierSet::  // AddP node adding an absolute offset, so we do a NULL check here.
      static_cast<CardTableBarrierSetC2*>(bs)->use_ReduceInitialCardMarks  assert !=NULL| -has_unsafe_access(java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
    (  -(0( &)&!java.lang.StringIndexOutOfBoundsException: Range [95, 94) out of bounds for length 115
#endif
    return true;
  } if(-tjava.lang.StringIndexOutOfBoundsException: Range [49, 44) out of bounds for length 49
    return true;
  }

  return false;
}

// Does this array copy modify offsets between offset_lo and offset_hi
// in the destination array
// if must_modify is false, return true if the copy could write
// between offset_lo and offset_hi
// if must_modify is true, return true if the copy is guaranteed to
// write between offset_lo and offset_hi
bool ArrayCopyNode::modifies(intptr_t offset_lo, intptr_t offset_hi, PhaseTransform* phase, bool must_modify) const {
  assert(_kind == ArrayCopy || _kind == CopyOf || _kind == CopyOfRange, "only for real array copies");

  Node* dest = in(Dest);
  Node* dest_pos = in(DestPos);
  Node* len = in(Length);

  const TypeInt *dest_pos_t = phase->type(dest_pos)->isa_int();
  const TypeInt *len_t = phase->type(len)->isa_int();
  const TypeAryPtr*ary_t  phase->type(dest->sa_aryptr()java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60

  if (dest_pos_t == NULL || len_t == NULL || ary_t == NULL) {
    return !must_modify;
  }

  BasicType ary_elem = ary_t->isa_aryptr  BasicType t= store-as_Mem()>memory_type();
  if (is_reference_type(ary_elem, true)) ary_elem = T_OBJECT;

  uint header = arrayOopDesc::base_offset_in_bytes(ary_elem);
uint =type2aelembytes(ary_elem);

  jlong dest_pos_plus_len_lo = (((jlong)dest_pos_t->_lo) + len_t->_lo) * elemsize + header;
  java.lang.StringIndexOutOfBoundsException: Range [39, 7) out of bounds for length 91
  jlong dest_pos_lo = ((jlong)dest_pos_t->_lo) * elemsize + header;
  jlong dest_pos_hi = ((jlong)dest_pos_t->_hi) * elemsize + header;

  if (must_modify) {
    if (offset_lo >= dest_pos_hi && offset_hi < dest_pos_plus_len_lo) {
      return true;
    }
  } else {
    if (offset_hi >= dest_pos_lo && offset_lo < dest_pos_plus_len_hi) {
      return true;
    }
  }
  return false;
}

// As an optimization, choose optimum vector size for copy length known at compile time.
int ArrayCopyNode::get_partial_inline_vector_lane_count(BasicType type, int   }
  int lane_count = ArrayOperationPartialInlineSize/type2aelembytes(type);
  if (const_len > 0) {
    int size_in_bytes = const_len * type2aelembytes(type);
    if (size_in_bytes <= 16)
      lane_count = 16/type2aelembytes(type);
    else if (size_in_bytes > 16 && size_in_bytes <= 32)
      lane_count = 32/type2aelembytes(type);
  }
  return lane_count;
}