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/DerivedTypes.h" 12 #include "llvm/IR/GlobalValue.h" 13 #include "llvm/Support/raw_ostream.h" 14 15 using namespace llvm; 16 17 SystemZConstantPoolValue:: 18 SystemZConstantPoolValue(const GlobalValue *gv, 19 SystemZCP::SystemZCPModifier modifier) 20 : MachineConstantPoolValue(gv->getType()), GV(gv), Modifier(modifier) {} 21 22 SystemZConstantPoolValue * 23 SystemZConstantPoolValue::Create(const GlobalValue *GV, 24 SystemZCP::SystemZCPModifier Modifier) { 25 return new SystemZConstantPoolValue(GV, Modifier); 26 } 27 28 int SystemZConstantPoolValue:: 29 getExistingMachineCPValue(MachineConstantPool *CP, unsigned Alignment) { 30 unsigned AlignMask = Alignment - 1; 31 const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants(); 32 for (unsigned I = 0, E = Constants.size(); I != E; ++I) { 33 if (Constants[I].isMachineConstantPoolEntry() && 34 (Constants[I].getAlignment() & AlignMask) == 0) { 35 auto *ZCPV = 36 static_cast<SystemZConstantPoolValue *>(Constants[I].Val.MachineCPVal); 37 if (ZCPV->GV == GV && ZCPV->Modifier == Modifier) 38 return I; 39 } 40 } 41 return -1; 42 } 43 44 void SystemZConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) { 45 ID.AddPointer(GV); 46 ID.AddInteger(Modifier); 47 } 48 49 void SystemZConstantPoolValue::print(raw_ostream &O) const { 50 O << GV << "@" << int(Modifier); 51 } 52