40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
//===- PtrUseVisitor.cpp - InstVisitors over a pointers uses --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// Implementation of the pointer use visitors.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/PtrUseVisitor.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/IR/Instructions.h"
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#include <algorithm>
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using namespace llvm;
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void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) {
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for (Use &U : I.uses()) {
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if (VisitedUses.insert(&U).second) {
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UseToVisit NewU = {
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UseToVisit::UseAndIsOffsetKnownPair(&U, IsOffsetKnown),
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Offset
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};
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Worklist.push_back(std::move(NewU));
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}
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}
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}
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bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) {
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if (!IsOffsetKnown)
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return false;
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return GEPI.accumulateConstantOffset(DL, Offset);
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}
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