forked from OSchip/llvm-project
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
//===- PtrUseVisitor.cpp - InstVisitors over a pointers uses --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
/// Implementation of the pointer use visitors.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/PtrUseVisitor.h"
|
|
|
|
using namespace llvm;
|
|
|
|
void detail::PtrUseVisitorBase::enqueueUsers(Instruction &I) {
|
|
for (Value::use_iterator UI = I.use_begin(), UE = I.use_end();
|
|
UI != UE; ++UI) {
|
|
if (VisitedUses.insert(&UI.getUse())) {
|
|
UseToVisit NewU = {
|
|
UseToVisit::UseAndIsOffsetKnownPair(&UI.getUse(), IsOffsetKnown),
|
|
Offset
|
|
};
|
|
Worklist.push_back(llvm_move(NewU));
|
|
}
|
|
}
|
|
}
|
|
|
|
bool detail::PtrUseVisitorBase::adjustOffsetForGEP(GetElementPtrInst &GEPI) {
|
|
if (!IsOffsetKnown)
|
|
return false;
|
|
|
|
return GEPI.accumulateConstantOffset(DL, Offset);
|
|
}
|