1 //===-- llvm/Target/TargetCacheInfo.h ---------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Describes properties of the target cache architecture.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_TARGET_TARGETCACHEINFO_H
15 #define LLVM_TARGET_TARGETCACHEINFO_H
17 #include "Support/DataTypes.h"
23 struct TargetCacheInfo {
24 const TargetMachine ⌖
25 TargetCacheInfo(const TargetCacheInfo&); // DO NOT IMPLEMENT
26 void operator=(const TargetCacheInfo&); // DO NOT IMPLEMENT
28 unsigned int numLevels;
29 std::vector<unsigned short> cacheLineSizes;
30 std::vector<unsigned int> cacheSizes;
31 std::vector<unsigned short> cacheAssoc;
34 TargetCacheInfo(const TargetMachine& tgt) : target(tgt) {
37 virtual ~TargetCacheInfo() {}
39 // Default parameters are:
41 // L1: LineSize 16, Cache Size 32KB, Direct-mapped (assoc = 1)
42 // L2: LineSize 32, Cache Size 1 MB, 4-way associative
43 // NOTE: Cache levels are numbered from 1 as above, not from 0.
45 virtual void Initialize (); // subclass to override defaults
47 unsigned int getNumCacheLevels () const {
50 unsigned short getCacheLineSize (unsigned level) const {
51 assert(level <= cacheLineSizes.size() && "Invalid cache level");
52 return cacheLineSizes[level-1];
54 unsigned int getCacheSize (unsigned level) const {
55 assert(level <= cacheSizes.size() && "Invalid cache level");
56 return cacheSizes[level-1];
58 unsigned short getCacheAssoc (unsigned level) const {
59 assert(level <= cacheAssoc.size() && "Invalid cache level");
60 return cacheAssoc[level];
64 } // End llvm namespace