1//===-- SystemZConstantPoolValue.cpp - SystemZ constant-pool value --------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "SystemZConstantPoolValue.h"
11#include "llvm/ADT/FoldingSet.h"
12#include "llvm/IR/DerivedTypes.h"
13#include "llvm/IR/GlobalValue.h"
14#include "llvm/Support/raw_ostream.h"
15
16using namespace llvm;
17
18SystemZConstantPoolValue::
19SystemZConstantPoolValue(const GlobalValue *gv,
20                         SystemZCP::SystemZCPModifier modifier)
21  : MachineConstantPoolValue(gv->getType()), GV(gv), Modifier(modifier) {}
22
23SystemZConstantPoolValue *
24SystemZConstantPoolValue::Create(const GlobalValue *GV,
25                                 SystemZCP::SystemZCPModifier Modifier) {
26  return new SystemZConstantPoolValue(GV, Modifier);
27}
28
29int SystemZConstantPoolValue::
30getExistingMachineCPValue(MachineConstantPool *CP, unsigned Alignment) {
31  unsigned AlignMask = Alignment - 1;
32  const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
33  for (unsigned I = 0, E = Constants.size(); I != E; ++I) {
34    if (Constants[I].isMachineConstantPoolEntry() &&
35        (Constants[I].getAlignment() & AlignMask) == 0) {
36      auto *ZCPV =
37        static_cast<SystemZConstantPoolValue *>(Constants[I].Val.MachineCPVal);
38      if (ZCPV->GV == GV && ZCPV->Modifier == Modifier)
39        return I;
40    }
41  }
42  return -1;
43}
44
45void SystemZConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
46  ID.AddPointer(GV);
47  ID.AddInteger(Modifier);
48}
49
50void SystemZConstantPoolValue::print(raw_ostream &O) const {
51  O << GV << "@" << int(Modifier);
52}
53