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annotate lib/Analysis/PtrUseVisitor.cpp @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children 803732b1fca8
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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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14 #include "llvm/Analysis/PtrUseVisitor.h"
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16 using namespace llvm;
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18 void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) {
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19 for (Use &U : I.uses()) {
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20 if (VisitedUses.insert(&U).second) {
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21 UseToVisit NewU = {
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22 UseToVisit::UseAndIsOffsetKnownPair(&U, IsOffsetKnown),
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23 Offset
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24 };
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25 Worklist.push_back(std::move(NewU));
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26 }
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27 }
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28 }
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30 bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) {
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31 if (!IsOffsetKnown)
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32 return false;
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34 return GEPI.accumulateConstantOffset(DL, Offset);
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35 }