1 //===- PtrUseVisitor.cpp - InstVisitors over a pointers uses --------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// \file 10 /// Implementation of the pointer use visitors. 11 /// 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Analysis/PtrUseVisitor.h" 15 16 using namespace llvm; 17 18 void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) { 19 for (Use &U : I.uses()) { 20 if (VisitedUses.insert(&U).second) { 21 UseToVisit NewU = { 22 UseToVisit::UseAndIsOffsetKnownPair(&U, IsOffsetKnown), 23 Offset 24 }; 25 Worklist.push_back(std::move(NewU)); 26 } 27 } 28 } 29 30 bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) { 31 if (!IsOffsetKnown) 32 return false; 33 34 return GEPI.accumulateConstantOffset(DL, Offset); 35 } 36
