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//===- ARMConstantPoolValue.cpp - ARM constantpool value --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Evan Cheng and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the ARM specific constantpool value class.
//
//===----------------------------------------------------------------------===//
#include "ARMConstantPoolValue.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/GlobalValue.h"
using namespace llvm;
ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, unsigned id,
bool isNonLazy, unsigned char PCAdj)
: MachineConstantPoolValue((const Type*)gv->getType()),
GV(gv), LabelId(id), isNonLazyPtr(isNonLazy), PCAdjust(PCAdj) {}
int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment) {
unsigned AlignMask = (1 << Alignment)-1;
const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
if (Constants[i].isMachineConstantPoolEntry() &&
(Constants[i].Offset & AlignMask) == 0) {
ARMConstantPoolValue *CPV =
(ARMConstantPoolValue *)Constants[i].Val.MachineCPVal;
if (CPV->GV == GV && CPV->LabelId == LabelId &&
CPV->isNonLazyPtr == isNonLazyPtr)
return i;
}
}
return -1;
}
void
ARMConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddPointer(GV);
ID.AddInteger(LabelId);
ID.AddInteger((unsigned)isNonLazyPtr);
ID.AddInteger(PCAdjust);
}
void ARMConstantPoolValue::print(std::ostream &O) const {
O << GV->getName();
if (isNonLazyPtr) O << "$non_lazy_ptr";
if (PCAdjust != 0) O << "-(LPIC" << LabelId << "+"
<< (unsigned)PCAdjust << ")";
}
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