/*

 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include "precompiled.hpp"

#include "memory/allocation.inline.hpp"

#include "opto/connode.hpp"

#include "opto/vectornode.hpp"

//------------------------------VectorNode--------------------------------------

// Return vector type for an element type and vector length.

const Type* VectorNode::vect_type(BasicType elt_bt, uint len) {

  assert(len <= VectorNode::max_vlen(elt_bt), "len in range");

  switch(elt_bt) {

  case T_BOOLEAN:

  case T_BYTE:

    switch(len) {

    case 2:  return TypeInt::CHAR;

    case 4:  return TypeInt::INT;

    case 8:  return TypeLong::LONG;

    }

    break;

  case T_CHAR:

  case T_SHORT:

    switch(len) {

    case 2:  return TypeInt::INT;

    case 4:  return TypeLong::LONG;

    }

    break;

  case T_INT:

    switch(len) {

    case 2:  return TypeLong::LONG;

    }

    break;

  case T_LONG:

    break;

  case T_FLOAT:

    switch(len) {

    case 2:  return Type::DOUBLE;

    }

    break;

  case T_DOUBLE:

    break;

  }

  ShouldNotReachHere();

  return NULL;

}

// Scalar promotion

VectorNode* VectorNode::scalar2vector(Compile* C, Node* s, uint vlen, const Type* opd_t) {

  BasicType bt = opd_t->array_element_basic_type();

  assert(vlen <= VectorNode::max_vlen(bt), "vlen in range");

  switch (bt) {

  case T_BOOLEAN:

  case T_BYTE:

    if (vlen == 16) return new (C, 2) Replicate16BNode(s);

    if (vlen ==  8) return new (C, 2) Replicate8BNode(s);

    if (vlen ==  4) return new (C, 2) Replicate4BNode(s);

    break;

  case T_CHAR:

    if (vlen == 8) return new (C, 2) Replicate8CNode(s);

    if (vlen == 4) return new (C, 2) Replicate4CNode(s);

    if (vlen == 2) return new (C, 2) Replicate2CNode(s);

    break;

  case T_SHORT:

    if (vlen == 8) return new (C, 2) Replicate8SNode(s);

    if (vlen == 4) return new (C, 2) Replicate4SNode(s);

    if (vlen == 2) return new (C, 2) Replicate2SNode(s);

    break;

  case T_INT:

    if (vlen == 4) return new (C, 2) Replicate4INode(s);

    if (vlen == 2) return new (C, 2) Replicate2INode(s);

    break;

  case T_LONG:

    if (vlen == 2) return new (C, 2) Replicate2LNode(s);

    break;

  case T_FLOAT:

    if (vlen == 4) return new (C, 2) Replicate4FNode(s);

    if (vlen == 2) return new (C, 2) Replicate2FNode(s);

    break;

  case T_DOUBLE:

    if (vlen == 2) return new (C, 2) Replicate2DNode(s);

    break;

  }

  ShouldNotReachHere();

  return NULL;

}

// Return initial Pack node. Additional operands added with add_opd() calls.

PackNode* PackNode::make(Compile* C, Node* s, const Type* opd_t) {

  BasicType bt = opd_t->array_element_basic_type();

  switch (bt) {

  case T_BOOLEAN:

  case T_BYTE:

    return new (C, 2) PackBNode(s);

  case T_CHAR:

    return new (C, 2) PackCNode(s);

  case T_SHORT:

    return new (C, 2) PackSNode(s);

  case T_INT:

    return new (C, 2) PackINode(s);

  case T_LONG:

    return new (C, 2) PackLNode(s);

  case T_FLOAT:

    return new (C, 2) PackFNode(s);

  case T_DOUBLE:

    return new (C, 2) PackDNode(s);

  }

  ShouldNotReachHere();

  return NULL;

}

// Create a binary tree form for Packs. [lo, hi) (half-open) range

Node* PackNode::binaryTreePack(Compile* C, int lo, int hi) {

  int ct = hi - lo;

  assert(is_power_of_2(ct), "power of 2");

  int mid = lo + ct/2;

  Node* n1 = ct == 2 ? in(lo)   : binaryTreePack(C, lo,  mid);

  Node* n2 = ct == 2 ? in(lo+1) : binaryTreePack(C, mid, hi );

  int rslt_bsize = ct * type2aelembytes(elt_basic_type());

  if (bottom_type()->is_floatingpoint()) {

    switch (rslt_bsize) {

    case  8: return new (C, 3) PackFNode(n1, n2);

    case 16: return new (C, 3) PackDNode(n1, n2);

    }

  } else {

    assert(bottom_type()->isa_int() || bottom_type()->isa_long(), "int or long");

    switch (rslt_bsize) {

    case  2: return new (C, 3) Pack2x1BNode(n1, n2);

    case  4: return new (C, 3) Pack2x2BNode(n1, n2);

    case  8: return new (C, 3) PackINode(n1, n2);

    case 16: return new (C, 3) PackLNode(n1, n2);

    }

  }

  ShouldNotReachHere();

  return NULL;

}

// Return the vector operator for the specified scalar operation

// and vector length.  One use is to check if the code generator

// supports the vector operation.

int VectorNode::opcode(int sopc, uint vlen, const Type* opd_t) {

  BasicType bt = opd_t->array_element_basic_type();

  if (!(is_power_of_2(vlen) && vlen <= max_vlen(bt)))

    return 0; // unimplemented

  switch (sopc) {

  case Op_AddI:

    switch (bt) {

    case T_BOOLEAN:

    case T_BYTE:      return Op_AddVB;

    case T_CHAR:      return Op_AddVC;

    case T_SHORT:     return Op_AddVS;

    case T_INT:       return Op_AddVI;

    }

    ShouldNotReachHere();

  case Op_AddL:

    assert(bt == T_LONG, "must be");

    return Op_AddVL;

  case Op_AddF:

    assert(bt == T_FLOAT, "must be");

    return Op_AddVF;

  case Op_AddD:

    assert(bt == T_DOUBLE, "must be");

    return Op_AddVD;

  case Op_SubI:

    switch (bt) {

    case T_BOOLEAN:

    case T_BYTE:   return Op_SubVB;

    case T_CHAR:   return Op_SubVC;

    case T_SHORT:  return Op_SubVS;

    case T_INT:    return Op_SubVI;

    }

    ShouldNotReachHere();

  case Op_SubL:

    assert(bt == T_LONG, "must be");

    return Op_SubVL;

  case Op_SubF:

    assert(bt == T_FLOAT, "must be");

    return Op_SubVF;

  case Op_SubD:

    assert(bt == T_DOUBLE, "must be");

    return Op_SubVD;

  case Op_MulF:

    assert(bt == T_FLOAT, "must be");

    return Op_MulVF;

  case Op_MulD:

    assert(bt == T_DOUBLE, "must be");

    return Op_MulVD;

  case Op_DivF:

    assert(bt == T_FLOAT, "must be");

    return Op_DivVF;

  case Op_DivD:

    assert(bt == T_DOUBLE, "must be");

    return Op_DivVD;

  case Op_LShiftI:

    switch (bt) {

    case T_BOOLEAN:

    case T_BYTE:   return Op_LShiftVB;

    case T_CHAR:   return Op_LShiftVC;

    case T_SHORT:  return Op_LShiftVS;

    case T_INT:    return Op_LShiftVI;

    }

    ShouldNotReachHere();

  case Op_URShiftI:

    switch (bt) {

    case T_BOOLEAN:

    case T_BYTE:   return Op_URShiftVB;

    case T_CHAR:   return Op_URShiftVC;

    case T_SHORT:  return Op_URShiftVS;

    case T_INT:    return Op_URShiftVI;

    }

    ShouldNotReachHere();

  case Op_AndI:

  case Op_AndL:

    return Op_AndV;

  case Op_OrI:

  case Op_OrL:

    return Op_OrV;

  case Op_XorI:

  case Op_XorL:

    return Op_XorV;

  case Op_LoadB:

  case Op_LoadUS:

  case Op_LoadS:

  case Op_LoadI:

  case Op_LoadL:

  case Op_LoadF:

  case Op_LoadD:

    return VectorLoadNode::opcode(sopc, vlen);

  case Op_StoreB:

  case Op_StoreC:

  case Op_StoreI:

  case Op_StoreL:

  case Op_StoreF:

  case Op_StoreD:

    return VectorStoreNode::opcode(sopc, vlen);

  }

  return 0; // Unimplemented

}

// Helper for above.

int VectorLoadNode::opcode(int sopc, uint vlen) {

  switch (sopc) {

  case Op_LoadB:

    switch (vlen) {

    case  2:       return 0; // Unimplemented

    case  4:       return Op_Load4B;

    case  8:       return Op_Load8B;

    case 16:       return Op_Load16B;

    }

    break;

  case Op_LoadUS:

    switch (vlen) {

    case  2:       return Op_Load2C;

    case  4:       return Op_Load4C;

    case  8:       return Op_Load8C;

    }

    break;

  case Op_LoadS:

    switch (vlen) {

    case  2:       return Op_Load2S;

    case  4:       return Op_Load4S;

    case  8:       return Op_Load8S;

    }

    break;

  case Op_LoadI:

    switch (vlen) {

    case  2:       return Op_Load2I;

    case  4:       return Op_Load4I;

    }

    break;

  case Op_LoadL:

    if (vlen == 2) return Op_Load2L;

    break;

  case Op_LoadF:

    switch (vlen) {

    case  2:       return Op_Load2F;

    case  4:       return Op_Load4F;

    }

    break;

  case Op_LoadD:

    if (vlen == 2) return Op_Load2D;

    break;

  }

  return 0; // Unimplemented

}

// Helper for above

int VectorStoreNode::opcode(int sopc, uint vlen) {

  switch (sopc) {

  case Op_StoreB:

    switch (vlen) {

    case  2:       return 0; // Unimplemented

    case  4:       return Op_Store4B;

    case  8:       return Op_Store8B;

    case 16:       return Op_Store16B;

    }

    break;

  case Op_StoreC:

    switch (vlen) {

    case  2:       return Op_Store2C;

    case  4:       return Op_Store4C;

    case  8:       return Op_Store8C;

    }

    break;

  case Op_StoreI:

    switch (vlen) {

    case  2:       return Op_Store2I;

    case  4:       return Op_Store4I;

    }

    break;

  case Op_StoreL:

    if (vlen == 2) return Op_Store2L;

    break;

  case Op_StoreF:

    switch (vlen) {

    case  2:       return Op_Store2F;

    case  4:       return Op_Store4F;

    }

    break;

  case Op_StoreD:

    if (vlen == 2) return Op_Store2D;

    break;

  }

  return 0; // Unimplemented

}

// Return the vector version of a scalar operation node.

VectorNode* VectorNode::make(Compile* C, int sopc, Node* n1, Node* n2, uint vlen, const Type* opd_t) {

  int vopc = opcode(sopc, vlen, opd_t);

  switch (vopc) {

  case Op_AddVB: return new (C, 3) AddVBNode(n1, n2, vlen);

  case Op_AddVC: return new (C, 3) AddVCNode(n1, n2, vlen);

  case Op_AddVS: return new (C, 3) AddVSNode(n1, n2, vlen);

  case Op_AddVI: return new (C, 3) AddVINode(n1, n2, vlen);

  case Op_AddVL: return new (C, 3) AddVLNode(n1, n2, vlen);

  case Op_AddVF: return new (C, 3) AddVFNode(n1, n2, vlen);

  case Op_AddVD: return new (C, 3) AddVDNode(n1, n2, vlen);

  case Op_SubVB: return new (C, 3) SubVBNode(n1, n2, vlen);

  case Op_SubVC: return new (C, 3) SubVCNode(n1, n2, vlen);

  case Op_SubVS: return new (C, 3) SubVSNode(n1, n2, vlen);

  case Op_SubVI: return new (C, 3) SubVINode(n1, n2, vlen);

  case Op_SubVL: return new (C, 3) SubVLNode(n1, n2, vlen);

  case Op_SubVF: return new (C, 3) SubVFNode(n1, n2, vlen);

  case Op_SubVD: return new (C, 3) SubVDNode(n1, n2, vlen);

  case Op_MulVF: return new (C, 3) MulVFNode(n1, n2, vlen);

  case Op_MulVD: return new (C, 3) MulVDNode(n1, n2, vlen);

  case Op_DivVF: return new (C, 3) DivVFNode(n1, n2, vlen);

  case Op_DivVD: return new (C, 3) DivVDNode(n1, n2, vlen);

  case Op_LShiftVB: return new (C, 3) LShiftVBNode(n1, n2, vlen);

  case Op_LShiftVC: return new (C, 3) LShiftVCNode(n1, n2, vlen);

  case Op_LShiftVS: return new (C, 3) LShiftVSNode(n1, n2, vlen);

  case Op_LShiftVI: return new (C, 3) LShiftVINode(n1, n2, vlen);

  case Op_URShiftVB: return new (C, 3) URShiftVBNode(n1, n2, vlen);

  case Op_URShiftVC: return new (C, 3) URShiftVCNode(n1, n2, vlen);

  case Op_URShiftVS: return new (C, 3) URShiftVSNode(n1, n2, vlen);

  case Op_URShiftVI: return new (C, 3) URShiftVINode(n1, n2, vlen);

  case Op_AndV: return new (C, 3) AndVNode(n1, n2, vlen, opd_t->array_element_basic_type());

  case Op_OrV:  return new (C, 3) OrVNode (n1, n2, vlen, opd_t->array_element_basic_type());

  case Op_XorV: return new (C, 3) XorVNode(n1, n2, vlen, opd_t->array_element_basic_type());

  }

  ShouldNotReachHere();

  return NULL;

}

// Return the vector version of a scalar load node.

VectorLoadNode* VectorLoadNode::make(Compile* C, int opc, Node* ctl, Node* mem,

                                     Node* adr, const TypePtr* atyp, uint vlen) {

  int vopc = opcode(opc, vlen);

  switch(vopc) {

  case Op_Load16B: return new (C, 3) Load16BNode(ctl, mem, adr, atyp);

  case Op_Load8B:  return new (C, 3) Load8BNode(ctl, mem, adr, atyp);

  case Op_Load4B:  return new (C, 3) Load4BNode(ctl, mem, adr, atyp);

  case Op_Load8C:  return new (C, 3) Load8CNode(ctl, mem, adr, atyp);

  case Op_Load4C:  return new (C, 3) Load4CNode(ctl, mem, adr, atyp);

  case Op_Load2C:  return new (C, 3) Load2CNode(ctl, mem, adr, atyp);

  case Op_Load8S:  return new (C, 3) Load8SNode(ctl, mem, adr, atyp);

  case Op_Load4S:  return new (C, 3) Load4SNode(ctl, mem, adr, atyp);

  case Op_Load2S:  return new (C, 3) Load2SNode(ctl, mem, adr, atyp);

  case Op_Load4I:  return new (C, 3) Load4INode(ctl, mem, adr, atyp);

  case Op_Load2I:  return new (C, 3) Load2INode(ctl, mem, adr, atyp);

  case Op_Load2L:  return new (C, 3) Load2LNode(ctl, mem, adr, atyp);

  case Op_Load4F:  return new (C, 3) Load4FNode(ctl, mem, adr, atyp);

  case Op_Load2F:  return new (C, 3) Load2FNode(ctl, mem, adr, atyp);

  case Op_Load2D:  return new (C, 3) Load2DNode(ctl, mem, adr, atyp);

  }

  ShouldNotReachHere();

  return NULL;

}

// Return the vector version of a scalar store node.

VectorStoreNode* VectorStoreNode::make(Compile* C, int opc, Node* ctl, Node* mem,

                                       Node* adr, const TypePtr* atyp, Node* val,

                                       uint vlen) {

  int vopc = opcode(opc, vlen);

  switch(vopc) {

  case Op_Store16B: return new (C, 4) Store16BNode(ctl, mem, adr, atyp, val);

  case Op_Store8B: return new (C, 4) Store8BNode(ctl, mem, adr, atyp, val);

  case Op_Store4B: return new (C, 4) Store4BNode(ctl, mem, adr, atyp, val);

  case Op_Store8C: return new (C, 4) Store8CNode(ctl, mem, adr, atyp, val);

  case Op_Store4C: return new (C, 4) Store4CNode(ctl, mem, adr, atyp, val);

  case Op_Store2C: return new (C, 4) Store2CNode(ctl, mem, adr, atyp, val);

  case Op_Store4I: return new (C, 4) Store4INode(ctl, mem, adr, atyp, val);

  case Op_Store2I: return new (C, 4) Store2INode(ctl, mem, adr, atyp, val);

  case Op_Store2L: return new (C, 4) Store2LNode(ctl, mem, adr, atyp, val);

  case Op_Store4F: return new (C, 4) Store4FNode(ctl, mem, adr, atyp, val);

  case Op_Store2F: return new (C, 4) Store2FNode(ctl, mem, adr, atyp, val);

  case Op_Store2D: return new (C, 4) Store2DNode(ctl, mem, adr, atyp, val);

  }

  ShouldNotReachHere();

  return NULL;

}

// Extract a scalar element of vector.

Node* ExtractNode::make(Compile* C, Node* v, uint position, const Type* opd_t) {

  BasicType bt = opd_t->array_element_basic_type();

  assert(position < VectorNode::max_vlen(bt), "pos in range");

  ConINode* pos = ConINode::make(C, (int)position);

  switch (bt) {

  case T_BOOLEAN:

  case T_BYTE:

    return new (C, 3) ExtractBNode(v, pos);

  case T_CHAR:

    return new (C, 3) ExtractCNode(v, pos);

  case T_SHORT:

    return new (C, 3) ExtractSNode(v, pos);

  case T_INT:

    return new (C, 3) ExtractINode(v, pos);

  case T_LONG:

    return new (C, 3) ExtractLNode(v, pos);

  case T_FLOAT:

    return new (C, 3) ExtractFNode(v, pos);

  case T_DOUBLE:

    return new (C, 3) ExtractDNode(v, pos);

  }

  ShouldNotReachHere();

  return NULL;

}