llvm/lib/Target/SystemZ/SystemZConstantPoolValue.cpp

   1 //===-- SystemZConstantPoolValue.cpp - SystemZ constant-pool value --------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "SystemZConstantPoolValue.h"
  10 #include "llvm/ADT/FoldingSet.h"
  11 #include "llvm/IR/GlobalValue.h"
  12 #include "llvm/Support/raw_ostream.h"
  13
  14 using namespace llvm;
  15
  16 SystemZConstantPoolValue::
  17 SystemZConstantPoolValue(const GlobalValue *gv,
  18                          SystemZCP::SystemZCPModifier modifier)
  19   : MachineConstantPoolValue(gv->getType()), GV(gv), Modifier(modifier) {}
  20
  21 SystemZConstantPoolValue *
  22 SystemZConstantPoolValue::Create(const GlobalValue *GV,
  23                                  SystemZCP::SystemZCPModifier Modifier) {
  24   return new SystemZConstantPoolValue(GV, Modifier);
  25 }
  26
  27 int SystemZConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
  28                                                         Align Alignment) {
  29   const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
  30   for (unsigned I = 0, E = Constants.size(); I != E; ++I) {
  31     if (Constants[I].isMachineConstantPoolEntry() &&
  32         Constants[I].getAlign() >= Alignment) {
  33       auto *ZCPV =
  34         static_cast<SystemZConstantPoolValue *>(Constants[I].Val.MachineCPVal);
  35       if (ZCPV->GV == GV && ZCPV->Modifier == Modifier)
  36         return I;
  37     }
  38   }
  39   return -1;
  40 }
  41
  42 void SystemZConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
  43   ID.AddPointer(GV);
  44   ID.AddInteger(Modifier);
  45 }
  46
  47 void SystemZConstantPoolValue::print(raw_ostream &O) const {
  48   O << GV << "@" << int(Modifier);
  49 }