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annotate lib/Analysis/PtrUseVisitor.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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1 //===- PtrUseVisitor.cpp - InstVisitors over a pointers uses --------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 /// \file
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10 /// Implementation of the pointer use visitors.
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11 ///
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/Analysis/PtrUseVisitor.h"
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15
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16 using namespace llvm;
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17
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18 void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) {
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19 for (Value::use_iterator UI = I.use_begin(), UE = I.use_end();
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20 UI != UE; ++UI) {
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21 if (VisitedUses.insert(&UI.getUse())) {
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22 UseToVisit NewU = {
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23 UseToVisit::UseAndIsOffsetKnownPair(&UI.getUse(), IsOffsetKnown),
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24 Offset
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25 };
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26 Worklist.push_back(llvm_move(NewU));
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27 }
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28 }
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29 }
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31 bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) {
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32 if (!IsOffsetKnown)
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33 return false;
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34
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35 return GEPI.accumulateConstantOffset(DL, Offset);
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36 }