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 (Value::use_iterator UI = I.use_begin(), UE = I.use_end(); 20 UI != UE; ++UI) { 21 if (VisitedUses.insert(&UI.getUse())) { 22 UseToVisit NewU = { 23 UseToVisit::UseAndIsOffsetKnownPair(&UI.getUse(), IsOffsetKnown), 24 Offset 25 }; 26 Worklist.push_back(llvm_move(NewU)); 27 } 28 } 29 } 30 31 bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) { 32 if (!IsOffsetKnown) 33 return false; 34 35 return GEPI.accumulateConstantOffset(DL, Offset); 36 } 37
