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 20d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner#include "llvm/ADT/DenseMap.h" 2143d1fd449f1a0ac9d9dafa0b9569bb6b2e976198Anton Korobeynikov#include "llvm/ADT/ilist.h" 22fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman#include "llvm/ADT/ilist_node.h" 2337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines#include "llvm/IR/Metadata.h" 2436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/IR/ValueHandle.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; 4437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAMDNodes AAInfo; 459971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner public: 46d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec(Value *V) 47dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines : Val(V), PrevInList(nullptr), NextInList(nullptr), AS(nullptr), Size(0), 4837ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAInfo(DenseMapInfo<AAMDNodes>::getEmptyKey()) {} 499971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 50d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *getValue() const { return Val; } 51d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner 52d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *getNext() const { return NextInList; } 53dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool hasAliasSet() const { return AS != nullptr; } 549971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 55d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec** setPrevInList(PointerRec **PIL) { 562cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner PrevInList = PIL; 572cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner return &NextInList; 582cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner } 592cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 6037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines void updateSizeAndAAInfo(uint64_t NewSize, const AAMDNodes &NewAAInfo) { 6131a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner if (NewSize > Size) Size = NewSize; 62a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman 6337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines if (AAInfo == DenseMapInfo<AAMDNodes>::getEmptyKey()) 6437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines // We don't have a AAInfo yet. Set it to NewAAInfo. 6537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAInfo = NewAAInfo; 6637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines else if (AAInfo != NewAAInfo) 6737ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines // NewAAInfo conflicts with AAInfo. 6837ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAInfo = DenseMapInfo<AAMDNodes>::getTombstoneKey(); 6931a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner } 7031a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner 713da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t getSize() const { return Size; } 7231a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner 7337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines /// getAAInfo - Return the AAInfo, or null if there is no 74fb8096dee5df60f156e770b9f96f8417e9dbd4c9Dan Gohman /// information or conflicting information. 7537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAMDNodes getAAInfo() const { 7637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines // If we have missing or conflicting AAInfo, return null. 7737ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines if (AAInfo == DenseMapInfo<AAMDNodes>::getEmptyKey() || 7837ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAInfo == DenseMapInfo<AAMDNodes>::getTombstoneKey()) 7937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines return AAMDNodes(); 8037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines return AAInfo; 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) { 95dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines assert(!AS && "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; 104dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines assert(*AS->PtrListEnd == nullptr && "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. 1129971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 1136f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman // All instructions without a specific address in this alias set. 1146f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman std::vector<AssertingVH<Instruction> > UnknownInsts; 1159971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 1169971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // RefCount - Number of nodes pointing to this AliasSet plus the number of 1179971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // AliasSets forwarding to it. 118bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner unsigned RefCount : 28; 1199971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 120009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AccessType - Keep track of whether this alias set merely refers to the 121009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// locations of memory, whether it modifies the memory, or whether it does 1229971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// both. The lattice goes from "NoModRef" to either Refs or Mods, then to 1235560c9d49ccae132cabf1155f18aa0480dce3edaMisha Brukman /// ModRef as necessary. 124009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 125009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner enum AccessType { 1269971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner NoModRef = 0, Refs = 1, // Ref = bit 1 1279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner Mods = 2, ModRef = 3 // Mod = bit 2 128009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner }; 1299971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner unsigned AccessTy : 2; 130009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 131009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AliasType - Keep track the relationships between the pointers in the set. 132009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// Lattice goes from MustAlias to MayAlias. 133009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 134009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner enum AliasType { 1359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner MustAlias = 0, MayAlias = 1 136009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner }; 1379971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner unsigned AliasTy : 1; 138009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 139bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // Volatile - True if this alias set contains volatile loads or stores. 140bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner bool Volatile : 1; 141bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner 142b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner void addRef() { ++RefCount; } 143b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner void dropRef(AliasSetTracker &AST) { 144b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner assert(RefCount >= 1 && "Invalid reference count detected!"); 145b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner if (--RefCount == 0) 146b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner removeFromTracker(AST); 147b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner } 148b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner 1496f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman Instruction *getUnknownInst(unsigned i) const { 1506f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman assert(i < UnknownInsts.size()); 1516f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman return UnknownInsts[i]; 152cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner } 153cb7f65342291caa3636cb50c0ee04b383cd79f8dChris Lattner 154b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattnerpublic: 155b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// Accessors... 156b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isRef() const { return AccessTy & Refs; } 157b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMod() const { return AccessTy & Mods; } 158b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMustAlias() const { return AliasTy == MustAlias; } 159b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isMayAlias() const { return AliasTy == MayAlias; } 160b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 161bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // isVolatile - Return true if this alias set contains volatile loads or 162bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner // stores. 163bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner bool isVolatile() const { return Volatile; } 164bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner 165b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// isForwardingAliasSet - Return true if this alias set should be ignored as 166b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// part of the AliasSetTracker object. 167b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner bool isForwardingAliasSet() const { return Forward; } 168b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 169b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// mergeSetIn - Merge the specified alias set into this alias set... 170b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner /// 171276636c93b35786d5719e2eda335c79d38d92632Chris Lattner void mergeSetIn(AliasSet &AS, AliasSetTracker &AST); 172b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 173b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner // Alias Set iteration - Allow access to all of the pointer which are part of 174b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner // this alias set... 175b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner class iterator; 1762cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner iterator begin() const { return iterator(PtrList); } 177b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner iterator end() const { return iterator(); } 178dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool empty() const { return PtrList == nullptr; } 179b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 180791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattner void print(raw_ostream &OS) const; 181b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void dump() const; 182b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner 1839971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// Define an iterator for alias sets... this is just a forward iterator. 1847362ce08cb2c1f0b544b18dbc21630fb4baebcfcGabor Greif class iterator : public std::iterator<std::forward_iterator_tag, 1857362ce08cb2c1f0b544b18dbc21630fb4baebcfcGabor Greif PointerRec, ptrdiff_t> { 186d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *CurNode; 1879971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner public: 188dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines explicit iterator(PointerRec *CN = nullptr) : CurNode(CN) {} 1899769ab22265b313171d201b5928688524a01bd87Misha Brukman 1909971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner bool operator==(const iterator& x) const { 1919971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return CurNode == x.CurNode; 1929971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 1939971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner bool operator!=(const iterator& x) const { return !operator==(x); } 194009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 19531a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type &operator*() const { 1969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Dereferencing AliasSet.end()!"); 19731a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner return *CurNode; 1989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 19931a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type *operator->() const { return &operator*(); } 200877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 201d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *getPointer() const { return CurNode->getValue(); } 2023da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t getSize() const { return CurNode->getSize(); } 20337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AAMDNodes getAAInfo() const { return CurNode->getAAInfo(); } 2049769ab22265b313171d201b5928688524a01bd87Misha Brukman 2059971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator& operator++() { // Preincrement 2069971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Advancing past AliasSet.end()!"); 207d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner CurNode = CurNode->getNext(); 2089971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return *this; 2099971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2109971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator operator++(int) { // Postincrement 2119769ab22265b313171d201b5928688524a01bd87Misha Brukman iterator tmp = *this; ++*this; return tmp; 2129971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2139971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner }; 2149971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 215009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerprivate: 216fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // Can only be created by AliasSetTracker. Also, ilist creates one 217fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // to serve as a sentinel. 218fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_sentinel_traits<AliasSet>; 219dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines AliasSet() 220dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines : PtrList(nullptr), PtrListEnd(&PtrList), Forward(nullptr), RefCount(0), 221dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines AccessTy(NoModRef), AliasTy(MustAlias), Volatile(false) { 2229971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 223b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner 224ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines AliasSet(const AliasSet &AS) = delete; 225ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines void operator=(const AliasSet &AS) = delete; 2262cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 227d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *getSomePointer() const { 2282cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner return PtrList; 2299971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2309971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2319971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getForwardedTarget - Return the real alias set this represents. If this 2329971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// has been merged with another set and is forwarding, return the ultimate 2339971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// destination set. This also implements the union-find collapsing as well. 2349971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *getForwardedTarget(AliasSetTracker &AST) { 2359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (!Forward) return this; 2369971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2379971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *Dest = Forward->getForwardedTarget(AST); 2389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (Dest != Forward) { 239b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Dest->addRef(); 240b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Forward->dropRef(AST); 2419971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner Forward = Dest; 2429971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2439971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return Dest; 2449971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2459971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2469971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void removeFromTracker(AliasSetTracker &AST); 2479971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2483da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman void addPointer(AliasSetTracker &AST, PointerRec &Entry, uint64_t Size, 24937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const AAMDNodes &AAInfo, 250e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner bool KnownMustAlias = false); 2516f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman void addUnknownInst(Instruction *I, AliasAnalysis &AA); 25237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines void removeUnknownInst(AliasSetTracker &AST, Instruction *I) { 25337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool WasEmpty = UnknownInsts.empty(); 2546f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman for (size_t i = 0, e = UnknownInsts.size(); i != e; ++i) 2556f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman if (UnknownInsts[i] == I) { 2566f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman UnknownInsts[i] = UnknownInsts.back(); 2576f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman UnknownInsts.pop_back(); 258c9049a9ea8993e64b58c206fed6609a1415519f2Chris Lattner --i; --e; // Revisit the moved entry. 25969fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 26037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines if (!WasEmpty && UnknownInsts.empty()) 26137ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines dropRef(AST); 26269fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 263bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner void setVolatile() { Volatile = true; } 2649971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2651a4ccc3aa24d0ed3617d617b80785ae33e9282b1Hal Finkelpublic: 2669971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// aliasesPointer - Return true if the specified pointer "may" (or must) 2679971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// alias one of the members in the set. 2689971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// 26937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool aliasesPointer(const Value *Ptr, uint64_t Size, const AAMDNodes &AAInfo, 270a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasAnalysis &AA) const; 2716f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool aliasesUnknownInst(Instruction *Inst, AliasAnalysis &AA) const; 272009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner}; 273009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 274791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattnerinline raw_ostream& operator<<(raw_ostream &OS, const AliasSet &AS) { 2759971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS.print(OS); 2769971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return OS; 2779971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner} 2789971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 279009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 280009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerclass AliasSetTracker { 281b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman /// CallbackVH - A CallbackVH to arrange for AliasSetTracker to be 282b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman /// notified whenever a Value is deleted. 283b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman class ASTCallbackVH : public CallbackVH { 284b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman AliasSetTracker *AST; 28536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines void deleted() override; 28636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines void allUsesReplacedWith(Value *) override; 287b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman public: 288dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines ASTCallbackVH(Value *V, AliasSetTracker *AST = nullptr); 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 /// 32437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool add(Value *Ptr, uint64_t Size, const AAMDNodes &AAInfo); // Add a loc. 32512c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(LoadInst *LI); 32612c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(StoreInst *SI); 327235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool add(VAArgInst *VAAI); 32812c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(Instruction *I); // Dispatch to one of the other add methods... 329b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(BasicBlock &BB); // Add all instructions in basic block 330b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(const AliasSetTracker &AST); // Add alias relations from another AST 3316f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool addUnknown(Instruction *I); 332009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 333877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// remove methods - These methods are used to remove all entries that might 334877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// be aliased by the specified instruction. These methods return true if any 335877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// alias sets were eliminated. 336a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman // Remove a location 33737ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool remove(Value *Ptr, uint64_t Size, const AAMDNodes &AAInfo); 338877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(LoadInst *LI); 339877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(StoreInst *SI); 340235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool remove(VAArgInst *VAAI); 341877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(Instruction *I); 342877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner void remove(AliasSet &AS); 3436f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool removeUnknown(Instruction *I); 3448bdbb632433a2acddfebb387361e40b01f469192Chris Lattner 345d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner void clear(); 346877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 347009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// getAliasSets - Return the alias sets that are active. 348e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 3499971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const ilist<AliasSet> &getAliasSets() const { return AliasSets; } 3509971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3519971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getAliasSetForPointer - Return the alias set that the specified pointer 35212c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// lives in. If the New argument is non-null, this method sets the value to 35312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// true if a new alias set is created to contain the pointer (because the 35412c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// pointer didn't alias anything). 3553da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet &getAliasSetForPointer(Value *P, uint64_t Size, 35637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const AAMDNodes &AAInfo, 357dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool *New = nullptr); 3589971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 359877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// getAliasSetForPointerIfExists - Return the alias set containing the 360877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// location specified if one exists, otherwise return null. 3613da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *getAliasSetForPointerIfExists(Value *P, uint64_t Size, 36237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const AAMDNodes &AAInfo) { 36337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines return findAliasSetForPointer(P, Size, AAInfo); 364877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner } 3659769ab22265b313171d201b5928688524a01bd87Misha Brukman 36607bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// containsPointer - Return true if the specified location is represented by 36707bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// this alias set, false otherwise. This does not modify the AST object or 36807bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// alias sets. 36937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool containsPointer(Value *P, uint64_t Size, const AAMDNodes &AAInfo) const; 37037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines 37137ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines /// Return true if the specified instruction "may" (or must) alias one of the 37237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines /// members in any of the sets. 37337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool containsUnknown(Instruction *I) 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)]; 415dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (!Entry) 416d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Entry = new AliasSet::PointerRec(V); 417d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner return *Entry; 4189971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4199971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 42037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AliasSet &addPointer(Value *P, uint64_t Size, const AAMDNodes &AAInfo, 421a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasSet::AccessType E, 42212c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool &NewSet) { 42312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner NewSet = false; 42437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines AliasSet &AS = getAliasSetForPointer(P, Size, AAInfo, &NewSet); 4259971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS.AccessTy |= E; 426bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner return AS; 4279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4283da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *findAliasSetForPointer(const Value *Ptr, uint64_t Size, 42937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const AAMDNodes &AAInfo); 4309971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 4316f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman AliasSet *findAliasSetForUnknownInst(Instruction *Inst); 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