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annotate lib/Analysis/PtrUseVisitor.cpp @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 60c9769439b8
children c2174574ed3a
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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 //
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10 /// \file
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11 /// Implementation of the pointer use visitors.
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12 //
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13 //===----------------------------------------------------------------------===//
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15 #include "llvm/Analysis/PtrUseVisitor.h"
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16 #include "llvm/IR/Instruction.h"
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17 #include "llvm/IR/Instructions.h"
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18 #include <algorithm>
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19
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20 using namespace llvm;
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22 void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) {
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23 for (Use &U : I.uses()) {
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24 if (VisitedUses.insert(&U).second) {
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25 UseToVisit NewU = {
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26 UseToVisit::UseAndIsOffsetKnownPair(&U, IsOffsetKnown),
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27 Offset
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28 };
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29 Worklist.push_back(std::move(NewU));
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30 }
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31 }
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32 }
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34 bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) {
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35 if (!IsOffsetKnown)
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36 return false;
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37
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38 return GEPI.accumulateConstantOffset(DL, Offset);
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39 }