AliasSetTracker.h revision c9049a9ea8993e64b58c206fed6609a1415519f2
1009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner//===- llvm/Analysis/AliasSetTracker.h - Build Alias Sets -------*- C++ -*-===// 29769ab22265b313171d201b5928688524a01bd87Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 79769ab22265b313171d201b5928688524a01bd87Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner// 10009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner// This file defines two classes: AliasSetTracker and AliasSet. These interface 11009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner// are used to classify a collection of pointer references into a maximal number 12009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner// of disjoint sets. Each AliasSet object constructed by the AliasSetTracker 13009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner// object refers to memory disjoint from the other sets. 149769ab22265b313171d201b5928688524a01bd87Misha Brukman// 15009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner//===----------------------------------------------------------------------===// 16009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 17009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner#ifndef LLVM_ANALYSIS_ALIASSETTRACKER_H 18009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner#define LLVM_ANALYSIS_ALIASSETTRACKER_H 19009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 209971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner#include "llvm/Support/CallSite.h" 21b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman#include "llvm/Support/ValueHandle.h" 22d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner#include "llvm/ADT/DenseMap.h" 2343d1fd449f1a0ac9d9dafa0b9569bb6b2e976198Anton Korobeynikov#include "llvm/ADT/ilist.h" 24fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman#include "llvm/ADT/ilist_node.h" 25d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner#include <vector> 26d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 27d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 28d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 29009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass AliasAnalysis; 30009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass LoadInst; 31009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass StoreInst; 32235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohmanclass VAArgInst; 33009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass AliasSetTracker; 349971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattnerclass AliasSet; 35009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 36fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass AliasSet : public ilist_node<AliasSet> { 37009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner friend class AliasSetTracker; 389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 399971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner class PointerRec { 40d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *Val; // The pointer this record corresponds to. 41d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec **PrevInList, *NextInList; 429971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *AS; 433da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t Size; 44a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo; 459971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner public: 46d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec(Value *V) 47eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman : Val(V), PrevInList(0), NextInList(0), AS(0), Size(0), 48eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman TBAAInfo(DenseMapInfo<const MDNode *>::getEmptyKey()) {} 499971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 50d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *getValue() const { return Val; } 51d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner 52d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *getNext() const { return NextInList; } 539971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner bool hasAliasSet() const { return AS != 0; } 549971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 55d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec** setPrevInList(PointerRec **PIL) { 562cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner PrevInList = PIL; 572cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner return &NextInList; 582cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner } 592cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 603da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman void updateSizeAndTBAAInfo(uint64_t NewSize, const MDNode *NewTBAAInfo) { 6131a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner if (NewSize > Size) Size = NewSize; 62a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman 63eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman if (TBAAInfo == DenseMapInfo<const MDNode *>::getEmptyKey()) 64eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman // We don't have a TBAAInfo yet. Set it to NewTBAAInfo. 65a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman TBAAInfo = NewTBAAInfo; 66a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman else if (TBAAInfo != NewTBAAInfo) 67eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman // NewTBAAInfo conflicts with TBAAInfo. 68eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman TBAAInfo = DenseMapInfo<const MDNode *>::getTombstoneKey(); 6931a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner } 7031a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner 713da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t getSize() const { return Size; } 7231a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner 73fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman /// getTBAAInfo - Return the TBAAInfo, or null if there is no 74fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman /// information or conflicting information. 75fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman const MDNode *getTBAAInfo() const { 76eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman // If we have missing or conflicting TBAAInfo, return null. 77eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman if (TBAAInfo == DenseMapInfo<const MDNode *>::getEmptyKey() || 78eee5400442e0812cb375ed5e17595a62f9240b80Dan Gohman TBAAInfo == DenseMapInfo<const MDNode *>::getTombstoneKey()) 79fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman return 0; 80fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman return TBAAInfo; 81fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman } 82a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman 839769ab22265b313171d201b5928688524a01bd87Misha Brukman AliasSet *getAliasSet(AliasSetTracker &AST) { 849971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(AS && "No AliasSet yet!"); 859971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (AS->Forward) { 869971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *OldAS = AS; 879971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS = OldAS->getForwardedTarget(AST); 88b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner AS->addRef(); 89b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner OldAS->dropRef(AST); 909971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 919971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return AS; 929971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 939971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 949971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void setAliasSet(AliasSet *as) { 959971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(AS == 0 && "Already have an alias set!"); 969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS = as; 979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 982cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 99d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner void eraseFromList() { 100d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner if (NextInList) NextInList->PrevInList = PrevInList; 1012cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner *PrevInList = NextInList; 1027e0e9c635f5439426252bd1ccbfa90b878ba0ca6Chris Lattner if (AS->PtrListEnd == &NextInList) { 1037e0e9c635f5439426252bd1ccbfa90b878ba0ca6Chris Lattner AS->PtrListEnd = PrevInList; 1047e0e9c635f5439426252bd1ccbfa90b878ba0ca6Chris Lattner assert(*AS->PtrListEnd == 0 && "List not terminated right!"); 1057e0e9c635f5439426252bd1ccbfa90b878ba0ca6Chris Lattner } 106d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner delete this; 1079971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 1089971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner }; 1099971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 110d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *PtrList, **PtrListEnd; // Doubly linked list of nodes. 111d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner AliasSet *Forward; // Forwarding pointer. 112d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner AliasSet *Next, *Prev; // Doubly linked list of AliasSets. 1139971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 114cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner // All calls & invokes in this alias set. 115cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner std::vector<AssertingVH<Instruction> > CallSites; 1169971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 1179971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // RefCount - Number of nodes pointing to this AliasSet plus the number of 1189971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // AliasSets forwarding to it. 119bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner unsigned RefCount : 28; 1209971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 121009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AccessType - Keep track of whether this alias set merely refers to the 122009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// locations of memory, whether it modifies the memory, or whether it does 1239971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// both. The lattice goes from "NoModRef" to either Refs or Mods, then to 1245560c9d49ccae132cabf1155f18aa0480dce3edaMisha Brukman /// ModRef as necessary. 125009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 126009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner enum AccessType { 1279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner NoModRef = 0, Refs = 1, // Ref = bit 1 1289971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner Mods = 2, ModRef = 3 // Mod = bit 2 129009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner }; 1309971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner unsigned AccessTy : 2; 131009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 132009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AliasType - Keep track the relationships between the pointers in the set. 133009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// Lattice goes from MustAlias to MayAlias. 134009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 135009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner enum AliasType { 1369971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner MustAlias = 0, MayAlias = 1 137009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner }; 1389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner unsigned AliasTy : 1; 139009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 140bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // Volatile - True if this alias set contains volatile loads or stores. 141bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner bool Volatile : 1; 142bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner 143b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner void addRef() { ++RefCount; } 144b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner void dropRef(AliasSetTracker &AST) { 145b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner assert(RefCount >= 1 && "Invalid reference count detected!"); 146b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner if (--RefCount == 0) 147b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner removeFromTracker(AST); 148b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner } 149b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner 150cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner CallSite getCallSite(unsigned i) const { 151cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner assert(i < CallSites.size()); 152cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner return CallSite(CallSites[i]); 153cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner } 154cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner 155b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattnerpublic: 156b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// Accessors... 157b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isRef() const { return AccessTy & Refs; } 158b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMod() const { return AccessTy & Mods; } 159b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMustAlias() const { return AliasTy == MustAlias; } 160b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMayAlias() const { return AliasTy == MayAlias; } 161b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 162bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // isVolatile - Return true if this alias set contains volatile loads or 163bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // stores. 164bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner bool isVolatile() const { return Volatile; } 165bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner 166b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// isForwardingAliasSet - Return true if this alias set should be ignored as 167b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// part of the AliasSetTracker object. 168b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isForwardingAliasSet() const { return Forward; } 169b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 170b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// mergeSetIn - Merge the specified alias set into this alias set... 171b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// 172276636c93b35786d5719e2eda335c79d38d92632Chris Lattner void mergeSetIn(AliasSet &AS, AliasSetTracker &AST); 173b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 174b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner // Alias Set iteration - Allow access to all of the pointer which are part of 175b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner // this alias set... 176b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner class iterator; 1772cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner iterator begin() const { return iterator(PtrList); } 178b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner iterator end() const { return iterator(); } 179877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool empty() const { return PtrList == 0; } 180b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 181791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattner void print(raw_ostream &OS) const; 182b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void dump() const; 183b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 1849971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// Define an iterator for alias sets... this is just a forward iterator. 1857362ce08cb2c1f0b544b18dbc21630fb4baebcfcGabor Greif class iterator : public std::iterator<std::forward_iterator_tag, 1867362ce08cb2c1f0b544b18dbc21630fb4baebcfcGabor Greif PointerRec, ptrdiff_t> { 187d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *CurNode; 1889971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner public: 189d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner explicit iterator(PointerRec *CN = 0) : CurNode(CN) {} 1909769ab22265b313171d201b5928688524a01bd87Misha Brukman 1919971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner bool operator==(const iterator& x) const { 1929971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return CurNode == x.CurNode; 1939971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 1949971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner bool operator!=(const iterator& x) const { return !operator==(x); } 195009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 1969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const iterator &operator=(const iterator &I) { 1979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner CurNode = I.CurNode; 1989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return *this; 1999971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2009769ab22265b313171d201b5928688524a01bd87Misha Brukman 20131a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type &operator*() const { 2029971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Dereferencing AliasSet.end()!"); 20331a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner return *CurNode; 2049971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 20531a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type *operator->() const { return &operator*(); } 206877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 207d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *getPointer() const { return CurNode->getValue(); } 2083da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t getSize() const { return CurNode->getSize(); } 209a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *getTBAAInfo() const { return CurNode->getTBAAInfo(); } 2109769ab22265b313171d201b5928688524a01bd87Misha Brukman 2119971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator& operator++() { // Preincrement 2129971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Advancing past AliasSet.end()!"); 213d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner CurNode = CurNode->getNext(); 2149971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return *this; 2159971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2169971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator operator++(int) { // Postincrement 2179769ab22265b313171d201b5928688524a01bd87Misha Brukman iterator tmp = *this; ++*this; return tmp; 2189971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2199971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner }; 2209971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 221009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerprivate: 222fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // Can only be created by AliasSetTracker. Also, ilist creates one 223fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // to serve as a sentinel. 224fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_sentinel_traits<AliasSet>; 2252cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner AliasSet() : PtrList(0), PtrListEnd(&PtrList), Forward(0), RefCount(0), 226bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner AccessTy(NoModRef), AliasTy(MustAlias), Volatile(false) { 2279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 228b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner 229fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman AliasSet(const AliasSet &AS); // do not implement 230fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman void operator=(const AliasSet &AS); // do not implement 2312cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 232d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *getSomePointer() const { 2332cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner return PtrList; 2349971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2369971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getForwardedTarget - Return the real alias set this represents. If this 2379971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// has been merged with another set and is forwarding, return the ultimate 2389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// destination set. This also implements the union-find collapsing as well. 2399971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *getForwardedTarget(AliasSetTracker &AST) { 2409971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (!Forward) return this; 2419971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2429971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *Dest = Forward->getForwardedTarget(AST); 2439971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (Dest != Forward) { 244b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Dest->addRef(); 245b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Forward->dropRef(AST); 2469971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner Forward = Dest; 2479971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2489971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return Dest; 2499971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2509971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2519971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void removeFromTracker(AliasSetTracker &AST); 2529971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2533da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman void addPointer(AliasSetTracker &AST, PointerRec &Entry, uint64_t Size, 254a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo, 255e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner bool KnownMustAlias = false); 256652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng void addCallSite(CallSite CS, AliasAnalysis &AA); 257652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng void removeCallSite(CallSite CS) { 25834cd4a484e532cc463fd5a4bf59b88d13c5467c1Evan Cheng for (size_t i = 0, e = CallSites.size(); i != e; ++i) 259cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner if (CallSites[i] == CS.getInstruction()) { 26069fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner CallSites[i] = CallSites.back(); 26169fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner CallSites.pop_back(); 262c9049a9ea8993e64b58c206fed6609a1415519f2Chris Lattner --i; --e; // Revisit the moved entry. 26369fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 26469fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 265bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner void setVolatile() { Volatile = true; } 2669971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2679971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// aliasesPointer - Return true if the specified pointer "may" (or must) 2689971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// alias one of the members in the set. 2699971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// 2703da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool aliasesPointer(const Value *Ptr, uint64_t Size, const MDNode *TBAAInfo, 271a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasAnalysis &AA) const; 272652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng bool aliasesCallSite(CallSite CS, AliasAnalysis &AA) const; 273009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner}; 274009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 275791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattnerinline raw_ostream& operator<<(raw_ostream &OS, const AliasSet &AS) { 2769971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS.print(OS); 2779971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return OS; 2789971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner} 2799971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 280009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 281009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass AliasSetTracker { 282b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman /// CallbackVH - A CallbackVH to arrange for AliasSetTracker to be 283b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman /// notified whenever a Value is deleted. 284b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman class ASTCallbackVH : public CallbackVH { 285b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman AliasSetTracker *AST; 286b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman virtual void deleted(); 287b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman public: 288b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman ASTCallbackVH(Value *V, AliasSetTracker *AST = 0); 289a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman ASTCallbackVH &operator=(Value *V); 290a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman }; 2914bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner /// ASTCallbackVHDenseMapInfo - Traits to tell DenseMap that tell us how to 2924bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner /// compare and hash the value handle. 2934bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner struct ASTCallbackVHDenseMapInfo : public DenseMapInfo<Value *> {}; 294b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 295009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner AliasAnalysis &AA; 2969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner ilist<AliasSet> AliasSets; 2979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 298a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman typedef DenseMap<ASTCallbackVH, AliasSet::PointerRec*, 299a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman ASTCallbackVHDenseMapInfo> 300b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman PointerMapType; 301b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 3029971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // Map from pointers to their node 303b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman PointerMapType PointerMap; 304b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 305009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerpublic: 306009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AliasSetTracker ctor - Create an empty collection of AliasSets, and use 307009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// the specified alias analysis object to disambiguate load and store 308009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// addresses. 3099962054775455c43402bf176da4a28c68197feefDan Gohman explicit AliasSetTracker(AliasAnalysis &aa) : AA(aa) {} 310fd94dd58ffef1be3597ef8cb64f3b1d476d7d5ecAnton Korobeynikov ~AliasSetTracker() { clear(); } 311009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 312009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// add methods - These methods are used to add different types of 313009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// instructions to the alias sets. Adding a new instruction can result in 314009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// one of three actions happening: 315009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 316009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 1. If the instruction doesn't alias any other sets, create a new set. 317009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 2. If the instruction aliases exactly one set, add it to the set 318009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 3. If the instruction aliases multiple sets, merge the sets, and add 319009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// the instruction to the result. 320009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 32112c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// These methods return true if inserting the instruction resulted in the 32212c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// addition of a new alias set (i.e., the pointer did not alias anything). 32312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// 3243da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool add(Value *Ptr, uint64_t Size, const MDNode *TBAAInfo); // Add a location 32512c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(LoadInst *LI); 32612c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(StoreInst *SI); 327235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool add(VAArgInst *VAAI); 328652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng bool add(CallSite CS); // Call/Invoke instructions 32912c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(CallInst *CI) { return add(CallSite(CI)); } 33012c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(InvokeInst *II) { return add(CallSite(II)); } 33112c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(Instruction *I); // Dispatch to one of the other add methods... 332b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(BasicBlock &BB); // Add all instructions in basic block 333b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(const AliasSetTracker &AST); // Add alias relations from another AST 334009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 335877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// remove methods - These methods are used to remove all entries that might 336877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// be aliased by the specified instruction. These methods return true if any 337877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// alias sets were eliminated. 338a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman // Remove a location 3393da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool remove(Value *Ptr, uint64_t Size, const MDNode *TBAAInfo); 340877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(LoadInst *LI); 341877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(StoreInst *SI); 342235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool remove(VAArgInst *VAAI); 343652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng bool remove(CallSite CS); 344877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(CallInst *CI) { return remove(CallSite(CI)); } 345877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(InvokeInst *II) { return remove(CallSite(II)); } 346877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(Instruction *I); 347877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner void remove(AliasSet &AS); 3488bdbb632433a2acddfebb387361e40b01f469192Chris Lattner 349d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner void clear(); 350877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 351009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// getAliasSets - Return the alias sets that are active. 352e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 3539971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const ilist<AliasSet> &getAliasSets() const { return AliasSets; } 3549971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3559971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getAliasSetForPointer - Return the alias set that the specified pointer 35612c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// lives in. If the New argument is non-null, this method sets the value to 35712c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// true if a new alias set is created to contain the pointer (because the 35812c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// pointer didn't alias anything). 3593da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet &getAliasSetForPointer(Value *P, uint64_t Size, 360a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo, 361a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman bool *New = 0); 3629971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 363877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// getAliasSetForPointerIfExists - Return the alias set containing the 364877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// location specified if one exists, otherwise return null. 3653da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *getAliasSetForPointerIfExists(Value *P, uint64_t Size, 366a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo) { 367a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman return findAliasSetForPointer(P, Size, TBAAInfo); 368877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner } 3699769ab22265b313171d201b5928688524a01bd87Misha Brukman 37007bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// containsPointer - Return true if the specified location is represented by 37107bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// this alias set, false otherwise. This does not modify the AST object or 37207bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// alias sets. 3733da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool containsPointer(Value *P, uint64_t Size, const MDNode *TBAAInfo) const; 374877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 3759971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getAliasAnalysis - Return the underlying alias analysis object used by 3769971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// this tracker. 3779971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasAnalysis &getAliasAnalysis() const { return AA; } 3789971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 379e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// deleteValue method - This method is used to remove a pointer value from 380e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// the AliasSetTracker entirely. It should be used when an instruction is 381e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// deleted from the program to update the AST. If you don't use this, you 382e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// would have dangling pointers to deleted instructions. 383e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 384e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner void deleteValue(Value *PtrVal); 385e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 386e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// copyValue - This method should be used whenever a preexisting value in the 387e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// program is copied or cloned, introducing a new value. Note that it is ok 388e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// for clients that use this method to introduce the same value multiple 389e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// times: if the tracker already knows about a value, it will ignore the 390e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// request. 391e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 392e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner void copyValue(Value *From, Value *To); 393e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 394e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 3959971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner typedef ilist<AliasSet>::iterator iterator; 3969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner typedef ilist<AliasSet>::const_iterator const_iterator; 3979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const_iterator begin() const { return AliasSets.begin(); } 3999971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const_iterator end() const { return AliasSets.end(); } 4009971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 4019971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator begin() { return AliasSets.begin(); } 4029971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator end() { return AliasSets.end(); } 4039971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 404791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattner void print(raw_ostream &OS) const; 4059971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void dump() const; 406009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 407009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerprivate: 4089971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner friend class AliasSet; 4099971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void removeAliasSet(AliasSet *AS); 4109971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 411d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner // getEntryFor - Just like operator[] on the map, except that it creates an 412d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner // entry for the pointer if it doesn't already exist. 413d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner AliasSet::PointerRec &getEntryFor(Value *V) { 414b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman AliasSet::PointerRec *&Entry = PointerMap[ASTCallbackVH(V, this)]; 415d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner if (Entry == 0) 416d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Entry = new AliasSet::PointerRec(V); 417d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner return *Entry; 4189971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4199971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 4203da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet &addPointer(Value *P, uint64_t Size, const MDNode *TBAAInfo, 421a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasSet::AccessType E, 42212c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool &NewSet) { 42312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner NewSet = false; 424a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasSet &AS = getAliasSetForPointer(P, Size, TBAAInfo, &NewSet); 4259971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS.AccessTy |= E; 426bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner return AS; 4279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4283da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *findAliasSetForPointer(const Value *Ptr, uint64_t Size, 429a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo); 4309971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 431652f7ea955bb433d6b7a4d33685dca9485fd7b8bEvan Cheng AliasSet *findAliasSetForCallSite(CallSite CS); 432009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner}; 433009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 434791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattnerinline raw_ostream& operator<<(raw_ostream &OS, const AliasSetTracker &AST) { 4359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AST.print(OS); 4369971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return OS; 4379971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner} 4389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 439d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 440d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 441009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner#endif 442