| //===- SchedGraphCommon.cpp - Scheduling Graphs Base Class- ---------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by the LLVM research group and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Scheduling graph base class that contains common information for SchedGraph |
| // and ModuloSchedGraph scheduling graphs. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/CodeGen/SchedGraphCommon.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include <iostream> |
| |
| namespace llvm { |
| |
| class SchedGraphCommon; |
| |
| // |
| // class SchedGraphEdge |
| // |
| SchedGraphEdge::SchedGraphEdge(SchedGraphNodeCommon* _src, |
| SchedGraphNodeCommon* _sink, |
| SchedGraphEdgeDepType _depType, |
| unsigned int _depOrderType, |
| int _minDelay) |
| : src(_src), sink(_sink), depType(_depType), depOrderType(_depOrderType), |
| minDelay((_minDelay >= 0)? _minDelay : _src->getLatency()), val(NULL) { |
| |
| iteDiff=0; |
| assert(src != sink && "Self-loop in scheduling graph!"); |
| src->addOutEdge(this); |
| sink->addInEdge(this); |
| } |
| |
| SchedGraphEdge::SchedGraphEdge(SchedGraphNodeCommon* _src, |
| SchedGraphNodeCommon* _sink, |
| const Value* _val, |
| unsigned int _depOrderType, |
| int _minDelay) |
| : src(_src), sink(_sink), depType(ValueDep), depOrderType(_depOrderType), |
| minDelay((_minDelay >= 0)? _minDelay : _src->getLatency()), val(_val) { |
| iteDiff=0; |
| assert(src != sink && "Self-loop in scheduling graph!"); |
| src->addOutEdge(this); |
| sink->addInEdge(this); |
| } |
| |
| SchedGraphEdge::SchedGraphEdge(SchedGraphNodeCommon* _src, |
| SchedGraphNodeCommon* _sink, |
| unsigned int _regNum, |
| unsigned int _depOrderType, |
| int _minDelay) |
| : src(_src), sink(_sink), depType(MachineRegister), |
| depOrderType(_depOrderType), |
| minDelay((_minDelay >= 0)? _minDelay : _src->getLatency()), |
| machineRegNum(_regNum) { |
| iteDiff=0; |
| assert(src != sink && "Self-loop in scheduling graph!"); |
| src->addOutEdge(this); |
| sink->addInEdge(this); |
| } |
| |
| SchedGraphEdge::SchedGraphEdge(SchedGraphNodeCommon* _src, |
| SchedGraphNodeCommon* _sink, |
| ResourceId _resourceId, |
| int _minDelay) |
| : src(_src), sink(_sink), depType(MachineResource), depOrderType(NonDataDep), |
| minDelay((_minDelay >= 0)? _minDelay : _src->getLatency()), |
| resourceId(_resourceId) { |
| iteDiff=0; |
| assert(src != sink && "Self-loop in scheduling graph!"); |
| src->addOutEdge(this); |
| sink->addInEdge(this); |
| } |
| |
| |
| void SchedGraphEdge::dump(int indent) const { |
| std::cerr << std::string(indent*2, ' ') << *this; |
| } |
| |
| /*dtor*/ |
| SchedGraphNodeCommon::~SchedGraphNodeCommon() |
| { |
| // for each node, delete its out-edges |
| std::for_each(beginOutEdges(), endOutEdges(), |
| deleter<SchedGraphEdge>); |
| } |
| |
| void SchedGraphNodeCommon::removeInEdge(const SchedGraphEdge* edge) { |
| assert(edge->getSink() == this); |
| |
| for (iterator I = beginInEdges(); I != endInEdges(); ++I) |
| if ((*I) == edge) { |
| inEdges.erase(I); |
| break; |
| } |
| } |
| |
| void SchedGraphNodeCommon::removeOutEdge(const SchedGraphEdge* edge) { |
| assert(edge->getSrc() == this); |
| |
| for (iterator I = beginOutEdges(); I != endOutEdges(); ++I) |
| if ((*I) == edge) { |
| outEdges.erase(I); |
| break; |
| } |
| } |
| |
| void SchedGraphNodeCommon::dump(int indent) const { |
| std::cerr << std::string(indent*2, ' ') << *this; |
| } |
| |
| //class SchedGraphCommon |
| |
| SchedGraphCommon::~SchedGraphCommon() { |
| delete graphRoot; |
| delete graphLeaf; |
| } |
| |
| |
| void SchedGraphCommon::eraseIncomingEdges(SchedGraphNodeCommon* node, |
| bool addDummyEdges) { |
| // Delete and disconnect all in-edges for the node |
| for (SchedGraphNodeCommon::iterator I = node->beginInEdges(); |
| I != node->endInEdges(); ++I) { |
| SchedGraphNodeCommon* srcNode = (*I)->getSrc(); |
| srcNode->removeOutEdge(*I); |
| delete *I; |
| |
| if (addDummyEdges && srcNode != getRoot() && |
| srcNode->beginOutEdges() == srcNode->endOutEdges()) { |
| |
| // srcNode has no more out edges, so add an edge to dummy EXIT node |
| assert(node != getLeaf() && "Adding edge that was just removed?"); |
| (void) new SchedGraphEdge(srcNode, getLeaf(), |
| SchedGraphEdge::CtrlDep, |
| SchedGraphEdge::NonDataDep, 0); |
| } |
| } |
| |
| node->inEdges.clear(); |
| } |
| |
| void SchedGraphCommon::eraseOutgoingEdges(SchedGraphNodeCommon* node, |
| bool addDummyEdges) { |
| // Delete and disconnect all out-edges for the node |
| for (SchedGraphNodeCommon::iterator I = node->beginOutEdges(); |
| I != node->endOutEdges(); ++I) { |
| SchedGraphNodeCommon* sinkNode = (*I)->getSink(); |
| sinkNode->removeInEdge(*I); |
| delete *I; |
| |
| if (addDummyEdges && |
| sinkNode != getLeaf() && |
| sinkNode->beginInEdges() == sinkNode->endInEdges()) { |
| |
| //sinkNode has no more in edges, so add an edge from dummy ENTRY node |
| assert(node != getRoot() && "Adding edge that was just removed?"); |
| (void) new SchedGraphEdge(getRoot(), sinkNode, |
| SchedGraphEdge::CtrlDep, |
| SchedGraphEdge::NonDataDep, 0); |
| } |
| } |
| |
| node->outEdges.clear(); |
| } |
| |
| void SchedGraphCommon::eraseIncidentEdges(SchedGraphNodeCommon* node, |
| bool addDummyEdges) { |
| this->eraseIncomingEdges(node, addDummyEdges); |
| this->eraseOutgoingEdges(node, addDummyEdges); |
| } |
| |
| } // End llvm namespace |