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Move private headers into private regalloc directory

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5308 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2003-01-15 20:26:32 +00:00
parent 4309e736c1
commit a9dcd3cceb
2 changed files with 0 additions and 177 deletions
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62
include/llvm/CodeGen/InterferenceGraph.h
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/* Title: InterferenceGraph.h -*- C++ -*-
Author: Ruchira Sasanka
Date: July 20, 01
Purpose: Interference Graph used for register coloring.
Notes:
Adj Info is stored in the lower trangular matrix (i.e., row > col )
This class must be used in the following way:
* Construct class
* call addLRToIG as many times to add ALL LRs to this IG
* call createGraph to create the actual matrix
* Then setInterference, getInterference, mergeIGNodesOfLRs can be
called as desired to modify the graph.
* Once the modifications to the graph are over, call
setCurDegreeOfIGNodes() before pushing IGNodes on to stack for coloring.
*/
#ifndef INTERFERENCE_GRAPH_H
#define INTERFERENCE_GRAPH_H
#include <vector>
class LiveRange;
class RegClass;
class IGNode;
class InterferenceGraph {
char **IG; // a poiner to the interference graph
unsigned int Size; // size of a side of the IG
RegClass *const RegCl; // RegCl contains this IG
std::vector<IGNode *> IGNodeList; // a list of all IGNodes in a reg class
public:
// the matrix is not yet created by the constructor. Call createGraph()
// to create it after adding all IGNodes to the IGNodeList
InterferenceGraph(RegClass *RC);
~InterferenceGraph();
void createGraph();
void addLRToIG(LiveRange *LR);
void setInterference(const LiveRange *LR1,
const LiveRange *LR2);
unsigned getInterference(const LiveRange *LR1,
const LiveRange *LR2) const ;
void mergeIGNodesOfLRs(const LiveRange *LR1, LiveRange *LR2);
std::vector<IGNode *> &getIGNodeList() { return IGNodeList; }
const std::vector<IGNode *> &getIGNodeList() const { return IGNodeList; }
void setCurDegreeOfIGNodes();
void printIG() const;
void printIGNodeList() const;
};
#endif

115
include/llvm/CodeGen/RegClass.h
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/* Title: RegClass.h -*- C++ -*-
Author: Ruchira Sasanka
Date: Aug 20, 01
Purpose: Contains machine independent methods for register coloring.
*/
#ifndef REG_CLASS_H
#define REG_CLASS_H
#include "llvm/CodeGen/InterferenceGraph.h"
#include "llvm/Target/TargetRegInfo.h"
#include <stack>
class TargetRegClassInfo;
typedef std::vector<unsigned> ReservedColorListType;
//-----------------------------------------------------------------------------
// Class RegClass
//
// Implements a machine independant register class.
//
// This is the class that contains all data structures and common algos
// for coloring a particular register class (e.g., int class, fp class).
// This class is hardware independent. This class accepts a hardware
// dependent description of machine registers (TargetRegInfo class) to
// get hardware specific info and to color an individual IG node.
//
// This class contains the InterferenceGraph (IG).
// Also it contains an IGNode stack that can be used for coloring.
// The class provides some easy access methods to the IG methods, since these
// methods are called thru a register class.
//
//-----------------------------------------------------------------------------
class RegClass {
const Function *const Meth; // Function we are working on
const TargetRegClassInfo *const MRC; // corresponding MRC
const unsigned RegClassID; // my int ID
InterferenceGraph IG; // Interference graph - constructed by
// buildInterferenceGraph
std::stack<IGNode *> IGNodeStack; // the stack used for coloring
// ReservedColorList - for passing registers that are pre-allocated and cannot
// be used by the register allocator for this function.
//
const ReservedColorListType *const ReservedColorList;
// IsColorUsedArr - An array used for coloring each node. This array must be
// of size MRC->getNumOfAllRegs(). Allocated once in the constructor for
// efficiency.
//
std::vector<bool> IsColorUsedArr;
//--------------------------- private methods ------------------------------
void pushAllIGNodes();
bool pushUnconstrainedIGNodes();
IGNode * getIGNodeWithMinSpillCost();
void colorIGNode(IGNode *const Node);
public:
RegClass(const Function *M,
const TargetRegClassInfo *MRC,
const ReservedColorListType *RCL = 0);
inline void createInterferenceGraph() { IG.createGraph(); }
inline InterferenceGraph &getIG() { return IG; }
inline const unsigned getID() const { return RegClassID; }
// main method called for coloring regs
//
void colorAllRegs();
inline unsigned getNumOfAvailRegs() const
{ return MRC->getNumOfAvailRegs(); }
// --- following methods are provided to access the IG contained within this
// ---- RegClass easilly.
inline void addLRToIG(LiveRange *const LR)
{ IG.addLRToIG(LR); }
inline void setInterference(const LiveRange *const LR1,
const LiveRange *const LR2)
{ IG.setInterference(LR1, LR2); }
inline unsigned getInterference(const LiveRange *const LR1,
const LiveRange *const LR2) const
{ return IG.getInterference(LR1, LR2); }
inline void mergeIGNodesOfLRs(const LiveRange *const LR1,
LiveRange *const LR2)
{ IG.mergeIGNodesOfLRs(LR1, LR2); }
inline std::vector<bool> &getIsColorUsedArr() { return IsColorUsedArr; }
void printIGNodeList() const;
void printIG();
};
#endif