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"
21 struct TargetCacheInfo {
22 const TargetMachine ⌖
23 TargetCacheInfo(const TargetCacheInfo&); // DO NOT IMPLEMENT
24 void operator=(const TargetCacheInfo&); // DO NOT IMPLEMENT
26 unsigned int numLevels;
27 std::vector<unsigned short> cacheLineSizes;
28 std::vector<unsigned int> cacheSizes;
29 std::vector<unsigned short> cacheAssoc;
32 TargetCacheInfo(const TargetMachine& tgt) : target(tgt) {
35 virtual ~TargetCacheInfo() {}
37 // Default parameters are:
39 // L1: LineSize 16, Cache Size 32KB, Direct-mapped (assoc = 1)
40 // L2: LineSize 32, Cache Size 1 MB, 4-way associative
41 // NOTE: Cache levels are numbered from 1 as above, not from 0.
43 virtual void Initialize (); // subclass to override defaults
45 unsigned int getNumCacheLevels () const {
48 unsigned short getCacheLineSize (unsigned level) const {
49 assert(level <= cacheLineSizes.size() && "Invalid cache level");
50 return cacheLineSizes[level-1];
52 unsigned int getCacheSize (unsigned level) const {
53 assert(level <= cacheSizes.size() && "Invalid cache level");
54 return cacheSizes[level-1];
56 unsigned short getCacheAssoc (unsigned level) const {
57 assert(level <= cacheAssoc.size() && "Invalid cache level");
58 return cacheAssoc[level];