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// $Id$ -*-c++-*-
//***************************************************************************
// File:
// MachineCacheInfo.h
//
// Purpose:
// Describes properties of the target cache architecture.
//**************************************************************************/
#ifndef LLVM_TARGET_MACHINECACHEINFO_H
#define LLVM_TARGET_MACHINECACHEINFO_H
#include "llvm/Target/TargetMachine.h"
#include "Support/DataTypes.h"
#include <vector>
//---------------------------------------------------------------------------
// class MachineCacheInfo
//
// Purpose:
// Describes properties of the target cache architecture.
//---------------------------------------------------------------------------
class MachineCacheInfo : public NonCopyableV {
public:
const TargetMachine& target;
protected:
unsigned int numLevels;
vector<unsigned short> cacheLineSizes;
vector<unsigned int> cacheSizes;
vector<unsigned short> cacheAssoc;
public:
/*ctor*/ MachineCacheInfo (const TargetMachine& tgt);
/*dtor*/ virtual ~MachineCacheInfo () {}
// Default parameters are:
// NumLevels = 2
// L1: LineSize 16, Cache Size 32KB, Direct-mapped (assoc = 1)
// L2: LineSize 32, Cache Size 1 MB, 4-way associative
// NOTE: Cache levels are numbered from 1 as above, not from 0.
//
virtual void Initialize (); // subclass to override defaults
unsigned int getNumCacheLevels () const {
return numLevels;
}
unsigned short getCacheLineSize (unsigned level) const {
assert(level <= cacheLineSizes.size() && "Invalid cache level");
return cacheLineSizes[level-1];
}
unsigned int getCacheSize (unsigned level) const {
assert(level <= cacheSizes.size() && "Invalid cache level");
return cacheSizes[level-1];
}
unsigned short getCacheAssoc (unsigned level) const {
assert(level <= cacheAssoc.size() && "Invalid cache level");
return cacheAssoc[level];
}
};
//---------------------------------------------------------------------------
#endif
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