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IdiomRecognitionUtils.cpp
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IdiomRecognitionUtils.cpp
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/*******************************************************************************
* Copyright IBM Corp. and others 2000
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
#include "optimizer/IdiomRecognitionUtils.hpp"
#include <algorithm>
#include <stddef.h>
#include <stdint.h>
#include "codegen/CodeGenerator.hpp"
#include "env/FrontEnd.hpp"
#include "compile/Compilation.hpp"
#include "env/CompilerEnv.hpp"
#include "env/TRMemory.hpp"
#include "il/Block.hpp"
#include "il/DataTypes.hpp"
#include "il/ILOpCodes.hpp"
#include "il/ILOps.hpp"
#include "il/Node.hpp"
#include "il/Node_inlines.hpp"
#include "il/Symbol.hpp"
#include "il/SymbolReference.hpp"
#include "il/TreeTop.hpp"
#include "il/TreeTop_inlines.hpp"
#include "infra/Assert.hpp"
#include "infra/BitVector.hpp"
#include "infra/List.hpp"
#include "infra/TRCfgEdge.hpp"
#include "optimizer/IdiomRecognition.hpp"
#include "optimizer/Structure.hpp"
#include "optimizer/TranslateTable.hpp"
/************************************/
/************ Utilities *************/
/************************************/
void
dump256Bytes(uint8_t *t, TR::Compilation * comp)
{
int i;
traceMsg(comp, " | 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
traceMsg(comp, "--+--------------------------------");
for (i = 0; i < 256; i++)
{
if ((i % 16) == 0)
{
traceMsg(comp, "\n%02X|",i);
}
traceMsg(comp, "%2x",t[i]);
}
traceMsg(comp, "\n");
}
/******************************************************/
/************ Utilities for making idioms *************/
/******************************************************/
//*****************************************************************************************
// create the idiom for "v = src1 op val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomIOP2VarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, int opcode, TR_PCISCNode *v, TR_PCISCNode *src1, TR_PCISCNode *val)
{
TR_PCISCNode *n0, *n1;
TR_ASSERT(v->getOpcode() == TR_variable || v->getOpcode() == TR::iload, "Error!");
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), opcode, v->getOpcode() == TR_variable ? TR::NoType : TR::Int32, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n0);
n1 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::istore, TR::Int32, tgt->incNumNodes(), dagId, 1, 2, n0); tgt->addNode(n1);
n0->setChildren(src1, val);
n1->setChildren(n0, v->getOpcode() == TR::iload ? v->getChild(0) : v);
n0->setIsChildDirectlyConnected();
n1->setIsChildDirectlyConnected();
n0->setIsSuccDirectlyConnected();
return n1;
}
//*****************************************************************************************
// create the idiom for "v = v op val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomIOP2VarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, int opcode, TR_PCISCNode *v, TR_PCISCNode *val)
{
return createIdiomIOP2VarInLoop(tgt, ctrl, dagId, pred, opcode, v, v, val);
}
//*****************************************************************************************
// create the idiom for "v = src1 - val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomDecVarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *v, TR_PCISCNode *src1, TR_PCISCNode *subval)
{
return createIdiomIOP2VarInLoop(tgt, ctrl, dagId, pred, TR::isub, v, src1, subval);
}
//*****************************************************************************************
// create the idiom for "v = src1 + val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomIncVarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *v, TR_PCISCNode *src1, TR_PCISCNode *addval)
{
return createIdiomIOP2VarInLoop(tgt, ctrl, dagId, pred, TR::iadd, v, src1, addval);
}
//*****************************************************************************************
// create the idiom for "v = v - val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomDecVarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *v, TR_PCISCNode *subval)
{
return createIdiomDecVarInLoop(tgt, ctrl, dagId, pred, v, v, subval);
}
//*****************************************************************************************
// create the idiom for "v = v + val"
//*****************************************************************************************
TR_PCISCNode *
createIdiomIncVarInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *v, TR_PCISCNode *addval)
{
return createIdiomIncVarInLoop(tgt, ctrl, dagId, pred, v, v, addval);
}
//*****************************************************************************************
// create "iconst val" or "lconst val". Use lconst for a 64-bit environment
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayRelatedConst(TR_PCISCGraph *tgt, int32_t ctrl, uint16_t id, int dagId, int32_t val)
{
TR_PCISCNode *ret;
uint32_t opcode = (ctrl & CISCUtilCtl_64Bit) ? TR::lconst : TR::iconst;
ret = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), opcode, opcode == TR::lconst ? TR::Int64 : TR::Int32, id, dagId, 0, 0, val);
tgt->addNode(ret);
return ret;
}
//*****************************************************************************************
// create "iconst -sizeof(array header)" or "lconst -sizeof(array header)".
// Use lconst for a 64-bit environment.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayHeaderConst(TR_PCISCGraph *tgt, int32_t ctrl, uint16_t id, int dagId, TR::Compilation *c)
{
return createIdiomArrayRelatedConst(tgt, ctrl, id, dagId, -(int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
}
//*****************************************************************************************
// when the environment is under 64-bit, it'll insert "i2l" to the node.
//*****************************************************************************************
TR_PCISCNode *
createIdiomI2LIfNecessary(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode **pred, TR_PCISCNode *node)
{
TR_PCISCNode *ret = node;
if ((ctrl & (CISCUtilCtl_64Bit|CISCUtilCtl_NoI2L)) == (CISCUtilCtl_64Bit|0))
{
ret = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::i2l, TR::Int64, tgt->incNumNodes(), dagId, 1, 1, *pred, node); tgt->addNode(ret);
*pred = ret;
}
return ret;
}
#if 0
//*****************************************************************************************
// It creates an address tree of "index part" for a byte array. (e.g. index-header)
// It may insert I2L depending on the given flag.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteArrayAddressIndexTreeInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *index, TR_PCISCNode *cmah)
{
TR_PCISCNode *n0;
TR_PCISCNode *parentIndex;
if (ctrl & CISCUtilCtl_64Bit)
{
if (ctrl & CISCUtilCtl_NoI2L)
{
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::lsub, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n0);
parentIndex = n0;
}
else
{
parentIndex = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::i2l, TR::Int64, tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(parentIndex);
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::lsub, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, parentIndex); tgt->addNode(n0);
n0->setChild(parentIndex);
n0->setIsChildDirectlyConnected();
}
}
else
{
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::isub, TR::Int32, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n0);
parentIndex = n0;
}
parentIndex->setChild(index);
if ((ctrl & CISCUtilCtl_ChildDirectConnected) || index->getOpcode() == TR_variable || index->getOpcode() == TR_arrayindex)
parentIndex->setIsChildDirectlyConnected();
n0->setChild(1, cmah);
return n0;
}
//*****************************************************************************************
// It creates an effective address tree for a byte array. (e.g. base+(index-header))
// It may insert I2L depending on the given flag.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteArrayAddressInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah)
{
TR_PCISCNode *n0, *n1;
n0 = createIdiomByteArrayAddressIndexTreeInLoop(tgt, ctrl, dagId, pred, index, cmah);
n1 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), (ctrl & CISCUtilCtl_64Bit) ? TR::aladd : TR::aiadd, TR::Address, tgt->incNumNodes(), dagId, 1, 2, n0); tgt->addNode(n1);
n1->setChildren(base, n0);
if (base->getOpcode() == TR_variable || base->getOpcode() == TR_arraybase)
n1->setIsChildDirectlyConnected();
return n1;
}
#endif
//*****************************************************************************************
// It creates an address tree of "index part" for a non-byte array. (e.g. index*4-header)
// It may insert I2L depending on the given flag.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayAddressIndexTreeInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *constForMul)
{
TR_PCISCNode *n0, *mul;
if (ctrl & CISCUtilCtl_64Bit)
{
TR_PCISCNode *i2l;
if (ctrl & CISCUtilCtl_NoI2L)
{
mul = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::lmul, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(mul);
i2l = mul;
}
else
{
i2l = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::i2l, TR::Int64, tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(i2l);
mul = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::lmul, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, i2l); tgt->addNode(mul);
mul->setIsChildDirectlyConnected();
mul->setChild(i2l);
}
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::lsub, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, mul); tgt->addNode(n0);
i2l->setChild(index);
switch(index->getOpcode())
{
case TR_variable:
case TR_arrayindex:
i2l->setIsChildDirectlyConnected();
break;
}
n0->setIsChildDirectlyConnected();
}
else
{
mul = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::imul, TR::Int32, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(mul);
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::isub, TR::Int32, tgt->incNumNodes(), dagId, 1, 2, mul); tgt->addNode(n0);
mul->setChild(index);
n0->setIsChildDirectlyConnected();
switch(index->getOpcode())
{
case TR_variable:
case TR_arrayindex:
mul->setIsChildDirectlyConnected();
break;
}
}
mul->setChild(1, constForMul);
n0->setChildren(mul, cmah);
return n0;
}
//*****************************************************************************************
// It creates an effective address tree for a non-byte array. (e.g. base+(index*4-header))
// It may insert I2L depending on the given flag.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayAddressInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *constForMul)
{
TR_PCISCNode *n0, *n1;
n0 = createIdiomArrayAddressIndexTreeInLoop(tgt, ctrl, dagId, pred, index, cmah, constForMul);
n1 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), (ctrl & CISCUtilCtl_64Bit) ? TR::aladd : TR::aiadd, TR::Address, tgt->incNumNodes(), dagId, 1, 2, n0); tgt->addNode(n1);
n1->setChildren(base, n0);
if (base->getOpcode() == TR_variable || base->getOpcode() == TR_arraybase)
n1->setIsChildDirectlyConnected();
return n1;
}
//*****************************************************************************************
// It creates an effective address tree for an array using the given index tree. (e.g. base+indexTree)
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayAddressInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *indexTree)
{
TR_PCISCNode *n1;
n1 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), (ctrl & CISCUtilCtl_64Bit) ? TR::aladd : TR::aiadd, TR::Address, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n1);
n1->setChildren(base, indexTree);
return n1;
}
#if 0
//*****************************************************************************************
// It creates a byte array load.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteArrayLoadInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah)
{
TR_PCISCNode *n1, *n2;
n1 = createIdiomByteArrayAddressInLoop(tgt, ctrl, dagId, pred, base, index, cmah);
n2 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::bloadi, TR::Int8, tgt->incNumNodes(), dagId, 1, 1, n1); tgt->addNode(n2);
n2->setChild(n1);
n2->setIsChildDirectlyConnected();
return n2;
}
//*****************************************************************************************
// It creates a byte array store from the given address and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteArrayStoreBodyInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *addr, TR_PCISCNode *storeval)
{
TR_PCISCNode *n2, *i2b;
if (ctrl & CISCUtilCtl_NoConversion)
{
i2b = storeval;
}
else
{
i2b = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), (ctrl & CISCUtilCtl_AllConversion) ? TR_conversion : (TR_CISCOps)TR::i2b,
TR::Int8,
tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(i2b);
pred = i2b;
i2b->setChild(storeval);
}
n2 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::bstorei, TR::Int8, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n2);
n2->setChildren(addr, i2b);
return n2;
}
//*****************************************************************************************
// It creates a byte array store from the given base, index, cmah, and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteArrayStoreInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *storeval)
{
TR_PCISCNode *n1, *n2;
n1 = createIdiomByteArrayAddressInLoop(tgt, ctrl, dagId, pred, base, index, cmah);
n2 = createIdiomByteArrayStoreBodyInLoop(tgt, ctrl, dagId, n1, n1, storeval);
n2->setIsChildDirectlyConnected();
return n2;
}
#endif
//*****************************************************************************************
// It creates a char array load.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomCharArrayLoadInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *const2)
{
return createIdiomArrayLoadInLoop(tgt, ctrl, dagId, pred, TR::sloadi, TR::Int16, base, index, cmah, const2);
}
//*****************************************************************************************
// It creates a non-byte array load.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayLoadInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, int opcode, TR::DataType dataType, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *mulconst)
{
TR_PCISCNode *n1, *n2;
n1 = createIdiomArrayAddressInLoop(tgt, ctrl, dagId, pred, base, index, cmah, mulconst);
n2 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), opcode, dataType, tgt->incNumNodes(), dagId, 1, 1, n1); tgt->addNode(n2);
n2->setChild(n1);
n2->setIsChildDirectlyConnected();
return n2;
}
//*****************************************************************************************
// It creates a non-byte array store from the given address and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayStoreBodyInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, int opcode, TR::DataType dataType, TR_PCISCNode *addr, TR_PCISCNode *storeval)
{
TR_PCISCNode *n2, *i2c;
if (ctrl & CISCUtilCtl_NoConversion)
{
i2c = storeval;
}
else
{
i2c = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(),
(opcode == TR::sstorei) ? (TR_CISCOps)TR::i2s : TR_conversion,
(opcode == TR::sstorei) ? TR::Int16 : TR::NoType,
tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(i2c);
i2c->setIsOptionalNode();
pred = i2c;
i2c->setChild(storeval);
}
n2 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), opcode, dataType, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n2);
n2->setChildren(addr, i2c);
return n2;
}
//*****************************************************************************************
// It creates a char array store from the given address and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomCharArrayStoreBodyInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *addr, TR_PCISCNode *storeval)
{
return createIdiomArrayStoreBodyInLoop(tgt, ctrl, dagId, pred, TR::sstorei, TR::Int16, addr, storeval);
}
//*****************************************************************************************
// It creates a char array store from the given base, index, cmah, and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomArrayStoreInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, int opcode, TR::DataType dataType, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *const2, TR_PCISCNode *storeval)
{
TR_PCISCNode *n1, *n2;
n1 = createIdiomArrayAddressInLoop(tgt, ctrl, dagId, pred, base, index, cmah, const2);
n2 = createIdiomArrayStoreBodyInLoop(tgt, ctrl, dagId, n1, opcode, dataType, n1, storeval);
n2->setIsChildDirectlyConnected();
return n2;
}
//*****************************************************************************************
// It creates a char array store from the given base, index, cmah, and storeval trees.
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomCharArrayStoreInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index, TR_PCISCNode *cmah, TR_PCISCNode *const2, TR_PCISCNode *storeval)
{
return createIdiomArrayStoreInLoop(tgt, ctrl, dagId, pred, TR::sstorei, TR::Int16, base, index, cmah, const2, storeval);
}
//*****************************************************************************************
// It creates a byte array load particularly for "sun/io/CharToByteSingleByte.JITintrinsicConvert".
// The base address is given via java.nio.DirectByteBuffer.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomByteDirectArrayLoadInLoop(TR_PCISCGraph *tgt, int32_t ctrl, int dagId, TR_PCISCNode *pred, TR_PCISCNode *base, TR_PCISCNode *index)
{
TR_PCISCNode *n2;
TR_PCISCNode *n0;
TR_PCISCNode *parentIndex;
if (ctrl & CISCUtilCtl_64Bit)
{
if (ctrl & CISCUtilCtl_NoI2L)
{
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::ladd, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, pred); tgt->addNode(n0);
parentIndex = n0;
}
else
{
parentIndex = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::i2l, TR::Int64, tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(parentIndex);
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::ladd, TR::Int64, tgt->incNumNodes(), dagId, 1, 2, parentIndex); tgt->addNode(n0);
n0->setChild(parentIndex);
n0->setIsChildDirectlyConnected();
}
parentIndex->setChild(index);
if ((ctrl & CISCUtilCtl_ChildDirectConnected) || index->getOpcode() == TR_variable || index->getOpcode() == TR_arrayindex)
parentIndex->setIsChildDirectlyConnected();
}
else
{
parentIndex = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::l2i, TR::Int32, tgt->incNumNodes(), dagId, 1, 1, pred); tgt->addNode(parentIndex);
parentIndex->setChild(base);
parentIndex->setIsChildDirectlyConnected();
base = parentIndex;
n0 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::iadd, TR::Int32, tgt->incNumNodes(), dagId, 1, 2, parentIndex); tgt->addNode(n0);
n0->setChild(index);
if ((ctrl & CISCUtilCtl_ChildDirectConnected) || index->getOpcode() == TR_variable || index->getOpcode() == TR_arrayindex)
n0->setIsChildDirectlyConnected();
}
n0->setChild(1, base);
n2 = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::bloadi, TR::Int8, tgt->incNumNodes(), dagId, 1, 1, n0); tgt->addNode(n2);
n2->setChild(n0);
n2->setIsChildDirectlyConnected();
return n2;
}
//*****************************************************************************************
// It creates the idiom for "divide by 10" or the corresponding multiplication idiom
// based on the given flag.
//
// "InLoop" means that it sets the given dagId to all nodes in this subroutine.
//*****************************************************************************************
TR_PCISCNode *
createIdiomIDiv10InLoop(TR_PCISCGraph *tgt, int32_t ctrl, bool isDiv2Mul, int dagId, TR_PCISCNode *pred, TR_PCISCNode *src1, TR_PCISCNode *src2, TR_PCISCNode *c2, TR_PCISCNode *c31)
{
TR_PCISCNode *ret;
if (isDiv2Mul)
{
TR_PCISCNode *nmul= new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::imulh, TR::Int32 ,tgt->incNumNodes(), 1, 1, 2, pred, src1, src2); tgt->addNode(nmul);
TR_PCISCNode *nshr= new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::ishr, TR::Int32 ,tgt->incNumNodes(), 1, 1, 2, nmul, nmul, c2); tgt->addNode(nshr);
TR_PCISCNode *ushr= new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::iushr, TR::Int32 ,tgt->incNumNodes(), 1, 1, 2, nshr, src1, c31); tgt->addNode(ushr); // optional
ret = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::iadd, TR::Int32 ,tgt->incNumNodes(), 1, 1, 2, ushr, nshr, ushr); tgt->addNode(ret); // optional
ushr->setIsOptionalNode();
ushr->setSkipParentsCheck();
ret->setIsOptionalNode();
}
else
{
ret = new (PERSISTENT_NEW) TR_PCISCNode(tgt->trMemory(), TR::idiv, TR::Int32 ,tgt->incNumNodes(), 1, 1, 2, pred, src1, src2); tgt->addNode(ret);
}
return ret;
}
//*****************************************************************************************
// Search the node "target" starting from "start" within this basic block
//*****************************************************************************************
bool
searchNodeInBlock(TR_CISCNode *start,
TR_CISCNode *target)
{
TR_CISCNode *t = start;
while (t->getNumSuccs() == 1 && t->getPreds()->isSingleton())
{
if (t == target) return true;
t = t->getSucc(0);
if (t == start) break; // maybe, this condition never happen.
}
return false;
}
//*****************************************************************************************
// Check if all successors of t will reach any node included in pBV.
//*****************************************************************************************
bool
checkSuccsSet(TR_CISCTransformer *const trans,
TR_CISCNode *t,
TR_BitVector *const pBV)
{
List<TR_CISCNode> *T2P = trans->getT2P();
TR_CISCNode *p;
while (t->getNumSuccs() == 1)
{
t = t->getSucc(0);
if (!t->isNegligible())
{
ListIterator<TR_CISCNode> li(T2P + t->getID());
for (p = li.getFirst(); p; p = li.getNext()) if (pBV->isSet(p->getID())) return true; // found the pattern node in pBV
return false; // cannot find the pattern node.
}
}
for (int i = t->getNumSuccs(); --i >= 0; )
{
TR_CISCNode *tn = t->getSucc(i);
if (!tn->isNegligible())
{
ListIterator<TR_CISCNode> li(T2P + tn->getID());
for (p = li.getFirst(); p; p = li.getNext()) if (pBV->isSet(p->getID())) break; // found the pattern node in pBV
if (!p) return false; // cannot find the pattern node.
}
else
{
if (!checkSuccsSet(trans, tn, pBV)) return false;
}
}
return true;
}
//*****************************************************************************************
// It searches an iload in the tree "q", and it returns the iload
//*****************************************************************************************
static TR_CISCNode *
searchIload(TR_CISCNode *q, bool allowArrayIndex)
{
while(true)
{
bool fail = false;
if (q->getOpcode() == TR::i2l)
{
q = q->getChild(0); // allow only TR::iload or TR_variable
fail = true;
}
if (q->getOpcode() == TR::iload || q->getOpcode() == TR_variable) return q;
if (allowArrayIndex && q->getOpcode() == TR_arrayindex) return q;
if (fail || q->getOpcode() == TR::lload || q->getNumChildren() < 1) return 0;
q = q->getChild(0);
}
return 0;
}
//*****************************************************************************************
// It searches an array load in the tree "top", and it returns the type of an array load,
// a base variable, and an index variable.
//*****************************************************************************************
bool
getThreeNodesForArray(TR_CISCNode *top, TR_CISCNode **ixloadORstore, TR_CISCNode **aload, TR_CISCNode **iload, bool allowArrayIndex)
{
TR_CISCNode *p;
// search ixloadORstore
p = top;
while(true)
{
if (p->getNumChildren() == 0) return false;
if (p->getIlOpCode().isLoadIndirect() || p->getIlOpCode().isStoreIndirect() ||
p->getOpcode() == TR_inbload || p->getOpcode() == TR_inbstore ||
p->getOpcode() == TR_indload || p->getOpcode() == TR_indstore ||
p->getOpcode() == TR_ibcload || p->getOpcode() == TR_ibcstore)
{
*ixloadORstore = p;
break;
}
p = p->getChild(0);
}
p = p->getChild(0);
TR_CISCNode *q;
switch(p->getOpcode())
{
case TR::aladd:
case TR::aiadd:
// search aload
q = p->getChild(0);
while(true)
{
if (q->getOpcode() == TR::aload || q->getOpcode() == TR_variable || q->getOpcode() == TR_arraybase)
{
*aload = q;
break;
}
if (q->getNumChildren() != 1) return false;
q = q->getChild(0);
}
// search iload
if ((q = searchIload(p->getChild(1), allowArrayIndex)) == 0) return false;
*iload = q;
break;
case TR::ladd:
case TR::iadd:
// search iload
if ((q = searchIload(p->getChild(1), allowArrayIndex)))
{
*iload = q;
q = p->getChild(0);
}
else if ((q = searchIload(p->getChild(0), allowArrayIndex)))
{
*iload = q;
q = p->getChild(1);
}
else
{
return false;
}
// search aload
while(true)
{
if (q->getOpcode() == TR::lload || q->getOpcode() == TR_variable)
{
*aload = q;
break;
}
if (q->getOpcode() == TR::iload || q->getNumChildren() != 1) return false;
q = q->getChild(0);
}
break;
default:
return false;
}
return true;
}
//*****************************************************************************************
// It returns isDcrement and modification length by analyzing if-opcode
//*****************************************************************************************
bool
testExitIF(int opcode, bool *isDecrement, int32_t *modLength, int32_t *modStartIdx)
{
switch(opcode)
{
case TR::ificmplt:
if (isDecrement) *isDecrement = true;
if (modLength) *modLength = 1;
if (modStartIdx) *modStartIdx = 0;
return true;
case TR::ificmple:
if (isDecrement) *isDecrement = true;
if (modLength) *modLength = 0;
if (modStartIdx) *modStartIdx = 1;
return true;
case TR::ificmpgt:
if (isDecrement) *isDecrement = false;
if (modLength) *modLength = 1;
if (modStartIdx) *modStartIdx = 0;
return true;
case TR::ificmpge:
if (isDecrement) *isDecrement = false;
if (modLength) *modLength = 0;
if (modStartIdx) *modStartIdx = 0;
return true;
}
return false;
}
/********************************************************************/
/************ Utilities for analyzing or making TR::Node *************/
/********************************************************************/
//*****************************************************************************************
// It returns the n'th child is "iconst value".
//*****************************************************************************************
bool
testIConst(TR_CISCNode *n, int idx, int32_t value)
{
TR_CISCNode *ch = n->getChild(idx);
return (ch->getOpcode() == TR::iconst && ch->getOtherInfo() == value);
}
//*****************************************************************************************
// It inserts i2l based on the given flag.
//*****************************************************************************************
TR::Node*
createI2LIfNecessary(TR::Compilation *comp, bool is64bit, TR::Node *child)
{
return is64bit ? TR::Node::create(TR::i2l, 1, child) : child;
}
//*****************************************************************************************
// It converts from store to load.
//*****************************************************************************************
TR::Node*
createLoad(TR::Node *baseNode)
{
return baseNode->getOpCode().isStoreDirect() ? TR::Node::createLoad(baseNode, baseNode->getSymbolReference()) :
baseNode->duplicateTree();
}
//*****************************************************************************************
// It creates a load instruction, and it inserts i2l based on the given flag.
//*****************************************************************************************
TR::Node*
createLoadWithI2LIfNecessary(TR::Compilation *comp, bool is64bit, TR::Node *indexNode)
{
TR_ASSERT(indexNode->getOpCode().hasSymbolReference(), "parameter error");
TR::Node *iload = createLoad(indexNode);
return createI2LIfNecessary(comp, is64bit, iload);
}
//*****************************************************************************************
// It creates a node of the constant value of the array header size.
//*****************************************************************************************
TR::Node*
createArrayHeaderConst(TR::Compilation *comp, bool is64bit, TR::Node *baseNode)
{
TR::Node *c2;
if (is64bit)
{
c2 = TR::Node::create(baseNode, TR::lconst, 0);
c2->setLongInt(-(int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
}
else
{
c2 = TR::Node::create(baseNode, TR::iconst, 0, -(int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
}
return c2;
}
//*****************************************************************************************
// It creates an effective address tree for the top of the given array.
//*****************************************************************************************
TR::Node*
createArrayTopAddressTree(TR::Compilation *comp, bool is64bit, TR::Node *baseNode)
{
TR::Node *top, *c2;
TR::Node *aload = createLoad(baseNode);
if (is64bit)
{
top = TR::Node::create(baseNode, TR::aladd, 2);
c2 = TR::Node::create(baseNode, TR::lconst, 0);
c2->setLongInt((int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
}
else
{
top = TR::Node::create(baseNode, TR::aiadd, 2);
c2 = TR::Node::create(baseNode, TR::iconst, 0, (int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
}
top->setAndIncChild(0, aload);
top->setAndIncChild(1, c2);
return top;
}
//*****************************************************************************************
// It converts from store to load, and it inserts i2l based on the given flag.
//*****************************************************************************************
TR::Node*
convertStoreToLoadWithI2LIfNecessary(TR::Compilation *comp, bool is64bit, TR::Node *indexNode)
{
return (indexNode->getOpCode().isStoreDirect()) ?
createLoadWithI2LIfNecessary(comp, is64bit, indexNode) :
createI2LIfNecessary(comp, is64bit, indexNode->getReferenceCount() ?
indexNode->duplicateTree() : indexNode);
}
//*****************************************************************************************
// It converts from store to load.
//*****************************************************************************************
TR::Node*
convertStoreToLoad(TR::Compilation *comp, TR::Node *indexNode)
{
return (indexNode->getOpCode().isStoreDirect()) ?
TR::Node::createLoad(indexNode, indexNode->getSymbolReference()) :
indexNode->getReferenceCount() ? indexNode->duplicateTree() : indexNode;
}
//*****************************************************************************************
// It creates the byte size from an element size. (i.e. ret = index * multiply)
//*****************************************************************************************
TR::Node*
createBytesFromElement(TR::Compilation *comp, bool is64bit, TR::Node *indexNode, int multiply)
{
TR::Node *top, *c2;
top = convertStoreToLoadWithI2LIfNecessary(comp, is64bit, indexNode);
if (is64bit)
{
if (multiply > 1)
{
c2 = TR::Node::create(indexNode, TR::lconst, 0); // c2 is used temporary
c2->setLongInt(multiply);
top = TR::Node::create(TR::lmul, 2, top, c2);
}
}
else
{
if (multiply > 1)
{
c2 = TR::Node::create(indexNode, TR::iconst, 0, multiply); // c2 is used temporary
top = TR::Node::create(TR::imul, 2, top, c2);
}
}
return top;
}
//*****************************************************************************************
// It creates an index address tree for the given indexNode and size.
//*****************************************************************************************
TR::Node*
createIndexOffsetTree(TR::Compilation *comp, bool is64bit, TR::Node *indexNode, int multiply)
{
TR::Node *top, *c1, *c2;
c1 = createBytesFromElement(comp, is64bit, indexNode, multiply);
if (is64bit)
{
c2 = TR::Node::create(indexNode, TR::lconst, 0);
c2->setLongInt(-(int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
top = TR::Node::create(indexNode, TR::lsub, 2);
}
else
{
c2 = TR::Node::create(indexNode, TR::iconst, 0, -(int32_t)TR::Compiler->om.contiguousArrayHeaderSizeInBytes());
top = TR::Node::create(indexNode, TR::isub, 2);
}
top->setAndIncChild(0, c1);
top->setAndIncChild(1, c2);
return top;
}
//*****************************************************************************************
// It creates an effective address tree for the given baseNode, indexNode and size.
//*****************************************************************************************
TR::Node*
createArrayAddressTree(TR::Compilation *comp, bool is64bit, TR::Node *baseNode, TR::Node *indexNode, int multiply)
{
if (indexNode->getOpCodeValue() == TR::iconst && indexNode->getInt() == 0)
{
return createArrayTopAddressTree(comp, is64bit, baseNode);
}
else
{
TR::Node *top, *c2;
TR::Node *aload = createLoad(baseNode);
c2 = createIndexOffsetTree(comp, is64bit, indexNode, multiply);
top = TR::Node::create(baseNode, is64bit ? TR::aladd : TR::aiadd, 2);
top->setAndIncChild(0, aload);
top->setAndIncChild(1, c2);
return top;
}
}
//*****************************************************************************************
// It creates an array load tree for the given load type, baseNode, indexNode and size.
//*****************************************************************************************
TR::Node*
createArrayLoad(TR::Compilation *comp, bool is64bit, TR::Node *ixload, TR::Node *baseNode, TR::Node *indexNode, int multiply)
{
TR::Node *top, *c1;
if (comp->useCompressedPointers() &&
(ixload->getDataType() == TR::Address))
multiply = multiply >> 1;
c1 = createArrayAddressTree(comp, is64bit, baseNode, indexNode, multiply);
TR::SymbolReference *symref=ixload->getSymbolReference();
top = TR::Node::createWithSymRef(ixload, ixload->getOpCodeValue(), 1, symref);
top->setAndIncChild(0, c1);
return top;
}
//*****************************************************************************************
// It replaces the array index in the address tree.
//*****************************************************************************************
TR::Node *
replaceIndexInAddressTree(TR::Compilation *comp, TR::Node *tree, TR::SymbolReference *symRef, TR::Node *newNode)
{
TR::Node *orgTree = tree;
if (tree->getOpCode().isIndirect()) tree = tree->getChild(0);
if (tree->getOpCode().isAdd())
{
tree = tree->getChild(1);
while(true)
{
TR::Node *parent = tree;
if (tree->getOpCodeValue() == TR::iadd)
{
TR::Node *ch1 = tree->getChild(1);
if (ch1->getOpCodeValue() == TR::iload)
{
if (ch1->getSymbolReference() == symRef)
{
parent->getAndDecChild(1);
parent->setAndIncChild(1, newNode);
return orgTree;
}
}
}
tree = tree->getChild(0);
if (!tree) break;
if (tree->getOpCodeValue() == TR::iload)
{
if (tree->getSymbolReference() == symRef)