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" 23255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/Support/CallSite.h" 24255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/Support/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; 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. 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(); } 178877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool empty() const { return PtrList == 0; } 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: 188d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner explicit iterator(PointerRec *CN = 0) : 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 1959971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const iterator &operator=(const iterator &I) { 1969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner CurNode = I.CurNode; 1979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return *this; 1989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 1999769ab22265b313171d201b5928688524a01bd87Misha Brukman 20031a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type &operator*() const { 2019971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Dereferencing AliasSet.end()!"); 20231a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner return *CurNode; 2039971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 20431a9d185bfa253af2f0fece59d8b1227dad64b15Chris Lattner value_type *operator->() const { return &operator*(); } 205877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 206d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Value *getPointer() const { return CurNode->getValue(); } 2073da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman uint64_t getSize() const { return CurNode->getSize(); } 208a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *getTBAAInfo() const { return CurNode->getTBAAInfo(); } 2099769ab22265b313171d201b5928688524a01bd87Misha Brukman 2109971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator& operator++() { // Preincrement 2119971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner assert(CurNode && "Advancing past AliasSet.end()!"); 212d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner CurNode = CurNode->getNext(); 2139971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return *this; 2149971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2159971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator operator++(int) { // Postincrement 2169769ab22265b313171d201b5928688524a01bd87Misha Brukman iterator tmp = *this; ++*this; return tmp; 2179971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2189971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner }; 2199971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 220009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerprivate: 221fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // Can only be created by AliasSetTracker. Also, ilist creates one 222fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman // to serve as a sentinel. 223fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_sentinel_traits<AliasSet>; 2242cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner AliasSet() : PtrList(0), PtrListEnd(&PtrList), Forward(0), RefCount(0), 225bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner AccessTy(NoModRef), AliasTy(MustAlias), Volatile(false) { 2269971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 227b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner 228de8091708f2d5ade958507aa6d37907a6277e9f2Craig Topper AliasSet(const AliasSet &AS) LLVM_DELETED_FUNCTION; 229de8091708f2d5ade958507aa6d37907a6277e9f2Craig Topper void operator=(const AliasSet &AS) LLVM_DELETED_FUNCTION; 2302cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner 231d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner PointerRec *getSomePointer() const { 2322cffeec014537a5f4d2313a5c21c3aa6fcf33288Chris Lattner return PtrList; 2339971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2349971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getForwardedTarget - Return the real alias set this represents. If this 2369971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// has been merged with another set and is forwarding, return the ultimate 2379971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// destination set. This also implements the union-find collapsing as well. 2389971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *getForwardedTarget(AliasSetTracker &AST) { 2399971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (!Forward) return this; 2409971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2419971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasSet *Dest = Forward->getForwardedTarget(AST); 2429971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner if (Dest != Forward) { 243b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Dest->addRef(); 244b8a31ace2c49af703cf7b1f1bda408a361f53447Chris Lattner Forward->dropRef(AST); 2459971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner Forward = Dest; 2469971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2479971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return Dest; 2489971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 2499971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2509971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void removeFromTracker(AliasSetTracker &AST); 2519971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2523da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman void addPointer(AliasSetTracker &AST, PointerRec &Entry, uint64_t Size, 253a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo, 254e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner bool KnownMustAlias = false); 2556f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman void addUnknownInst(Instruction *I, AliasAnalysis &AA); 2566f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman void removeUnknownInst(Instruction *I) { 2576f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman for (size_t i = 0, e = UnknownInsts.size(); i != e; ++i) 2586f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman if (UnknownInsts[i] == I) { 2596f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman UnknownInsts[i] = UnknownInsts.back(); 2606f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman UnknownInsts.pop_back(); 261c9049a9ea8993e64b58c206fed6609a1415519f2Chris Lattner --i; --e; // Revisit the moved entry. 26269fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 26369fd7a3973a5c4ba4fb883b836fd0b84c046d10cChris Lattner } 264bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner void setVolatile() { Volatile = true; } 2659971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 2661a4ccc3aa24d0ed3617d617b80785ae33e9282b1Hal Finkelpublic: 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; 2726f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool aliasesUnknownInst(Instruction *Inst, 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(); 2879055ccdb6b33607e32ac83a8e9289fba44d1989aEli Friedman virtual void allUsesReplacedWith(Value *); 288b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman public: 289b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman ASTCallbackVH(Value *V, AliasSetTracker *AST = 0); 290a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman ASTCallbackVH &operator=(Value *V); 291a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman }; 2924bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner /// ASTCallbackVHDenseMapInfo - Traits to tell DenseMap that tell us how to 2934bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner /// compare and hash the value handle. 2944bbf4ee1491637c247e195e19e3e4a8ee5ad72faChris Lattner struct ASTCallbackVHDenseMapInfo : public DenseMapInfo<Value *> {}; 295b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 296009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner AliasAnalysis &AA; 2979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner ilist<AliasSet> AliasSets; 2989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 299a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman typedef DenseMap<ASTCallbackVH, AliasSet::PointerRec*, 300a818c30d664cd4ba4b9ed69fb2048a6ea55ec9cdDan Gohman ASTCallbackVHDenseMapInfo> 301b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman PointerMapType; 302b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 3039971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner // Map from pointers to their node 304b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman PointerMapType PointerMap; 305b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman 306009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerpublic: 307009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// AliasSetTracker ctor - Create an empty collection of AliasSets, and use 308009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// the specified alias analysis object to disambiguate load and store 309009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// addresses. 3109962054775455c43402bf176da4a28c68197feefDan Gohman explicit AliasSetTracker(AliasAnalysis &aa) : AA(aa) {} 311fd94dd58ffef1be3597ef8cb64f3b1d476d7d5ecAnton Korobeynikov ~AliasSetTracker() { clear(); } 312009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 313009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// add methods - These methods are used to add different types of 314009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// instructions to the alias sets. Adding a new instruction can result in 315009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// one of three actions happening: 316009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 317009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 1. If the instruction doesn't alias any other sets, create a new set. 318009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 2. If the instruction aliases exactly one set, add it to the set 319009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 3. If the instruction aliases multiple sets, merge the sets, and add 320009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// the instruction to the result. 321009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// 32212c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// These methods return true if inserting the instruction resulted in the 32312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// addition of a new alias set (i.e., the pointer did not alias anything). 32412c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// 3253da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool add(Value *Ptr, uint64_t Size, const MDNode *TBAAInfo); // Add a location 32612c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(LoadInst *LI); 32712c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(StoreInst *SI); 328235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool add(VAArgInst *VAAI); 32912c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool add(Instruction *I); // Dispatch to one of the other add methods... 330b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(BasicBlock &BB); // Add all instructions in basic block 331b75f9dda9e436b346c684c3694fbef6b14a00795Chris Lattner void add(const AliasSetTracker &AST); // Add alias relations from another AST 3326f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool addUnknown(Instruction *I); 333009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 334877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// remove methods - These methods are used to remove all entries that might 335877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// be aliased by the specified instruction. These methods return true if any 336877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// alias sets were eliminated. 337a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman // Remove a location 3383da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool remove(Value *Ptr, uint64_t Size, const MDNode *TBAAInfo); 339877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(LoadInst *LI); 340877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(StoreInst *SI); 341235fc57ef2ed0a3c43a6e2d77b7c13f96a6f8036Dan Gohman bool remove(VAArgInst *VAAI); 342877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner bool remove(Instruction *I); 343877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner void remove(AliasSet &AS); 3446f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman bool removeUnknown(Instruction *I); 3458bdbb632433a2acddfebb387361e40b01f469192Chris Lattner 346d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner void clear(); 347877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 348009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner /// getAliasSets - Return the alias sets that are active. 349e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 3509971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const ilist<AliasSet> &getAliasSets() const { return AliasSets; } 3519971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3529971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getAliasSetForPointer - Return the alias set that the specified pointer 35312c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// lives in. If the New argument is non-null, this method sets the value to 35412c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// true if a new alias set is created to contain the pointer (because the 35512c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner /// pointer didn't alias anything). 3563da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet &getAliasSetForPointer(Value *P, uint64_t Size, 357a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo, 358a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman bool *New = 0); 3599971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 360877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// getAliasSetForPointerIfExists - Return the alias set containing the 361877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner /// location specified if one exists, otherwise return null. 3623da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *getAliasSetForPointerIfExists(Value *P, uint64_t Size, 363a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo) { 364a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman return findAliasSetForPointer(P, Size, TBAAInfo); 365877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner } 3669769ab22265b313171d201b5928688524a01bd87Misha Brukman 36707bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// containsPointer - Return true if the specified location is represented by 36807bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// this alias set, false otherwise. This does not modify the AST object or 36907bfa52405feb99155304c1a28b71e69d046589cChris Lattner /// alias sets. 3703da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman bool containsPointer(Value *P, uint64_t Size, const MDNode *TBAAInfo) const; 371877ad7d80b3eac84f9f61294bc1b78817bbca530Chris Lattner 3729971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// getAliasAnalysis - Return the underlying alias analysis object used by 3739971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner /// this tracker. 3749971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AliasAnalysis &getAliasAnalysis() const { return AA; } 3759971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 376e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// deleteValue method - This method is used to remove a pointer value from 377e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// the AliasSetTracker entirely. It should be used when an instruction is 378e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// deleted from the program to update the AST. If you don't use this, you 379e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// would have dangling pointers to deleted instructions. 380e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 381e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner void deleteValue(Value *PtrVal); 382e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 383e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// copyValue - This method should be used whenever a preexisting value in the 384e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// program is copied or cloned, introducing a new value. Note that it is ok 385e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// for clients that use this method to introduce the same value multiple 386e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// times: if the tracker already knows about a value, it will ignore the 387e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// request. 388e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner /// 389e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner void copyValue(Value *From, Value *To); 390e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 391e2fe784500ee910536bfc7332eae82ab0fdd1bc7Chris Lattner 3929971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner typedef ilist<AliasSet>::iterator iterator; 3939971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner typedef ilist<AliasSet>::const_iterator const_iterator; 3949971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3959971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const_iterator begin() const { return AliasSets.begin(); } 3969971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner const_iterator end() const { return AliasSets.end(); } 3979971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 3989971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator begin() { return AliasSets.begin(); } 3999971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner iterator end() { return AliasSets.end(); } 4009971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 401791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattner void print(raw_ostream &OS) const; 4029971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void dump() const; 403009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 404009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattnerprivate: 4059971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner friend class AliasSet; 4069971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner void removeAliasSet(AliasSet *AS); 4079971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 408d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner // getEntryFor - Just like operator[] on the map, except that it creates an 409d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner // entry for the pointer if it doesn't already exist. 410d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner AliasSet::PointerRec &getEntryFor(Value *V) { 411b5b56ba9d4df47e618d4e0f9e1e09bf216733ee8Dan Gohman AliasSet::PointerRec *&Entry = PointerMap[ASTCallbackVH(V, this)]; 412d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner if (Entry == 0) 413d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner Entry = new AliasSet::PointerRec(V); 414d7168ddb116c2e9aa1f8325ae887eb63d6003037Chris Lattner return *Entry; 4159971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4169971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 4173da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet &addPointer(Value *P, uint64_t Size, const MDNode *TBAAInfo, 418a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasSet::AccessType E, 41912c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner bool &NewSet) { 42012c1155403fd2dbd3a24e3748e7d80bbaa27c7f6Chris Lattner NewSet = false; 421a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman AliasSet &AS = getAliasSetForPointer(P, Size, TBAAInfo, &NewSet); 4229971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AS.AccessTy |= E; 423bb8f4769a2ee48b82c30de52083942781e920dd9Chris Lattner return AS; 4249971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner } 4253da848bbda62b25c12335998aaa44ab361f0bf15Dan Gohman AliasSet *findAliasSetForPointer(const Value *Ptr, uint64_t Size, 426a8702eaf78e70e1eef8a63882ce97ae6d60edf5bDan Gohman const MDNode *TBAAInfo); 4279971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 4286f3ba37ebb06de206c74d73c7c2b422cca28a16dEli Friedman AliasSet *findAliasSetForUnknownInst(Instruction *Inst); 429009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner}; 430009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner 431791102fb1192ac9483274e54cbc42480c9b1af10Chris Lattnerinline raw_ostream& operator<<(raw_ostream &OS, const AliasSetTracker &AST) { 4329971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner AST.print(OS); 4339971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner return OS; 4349971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner} 4359971ac4a36c54488bcdf55d7e493ac0cd6dc168aChris Lattner 436d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 437d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 438009cc3d2e85674f01f70d915e0c802d89d0b672fChris Lattner#endif 439