1//===- SystemZConstantPoolValue.h - SystemZ constant-pool value -*- C++ -*-===// 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#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCONSTANTPOOLVALUE_H 10#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCONSTANTPOOLVALUE_H 11 12#include "llvm/CodeGen/MachineConstantPool.h" 13#include "llvm/Support/ErrorHandling.h" 14 15namespace llvm { 16 17class GlobalValue; 18 19namespace SystemZCP { 20enum SystemZCPModifier { 21 TLSGD, 22 TLSLDM, 23 DTPOFF, 24 NTPOFF 25}; 26} // end namespace SystemZCP 27 28/// A SystemZ-specific constant pool value. At present, the only 29/// defined constant pool values are module IDs or offsets of 30/// thread-local variables (written x@TLSGD, x@TLSLDM, x@DTPOFF, 31/// or x@NTPOFF). 32class SystemZConstantPoolValue : public MachineConstantPoolValue { 33 const GlobalValue *GV; 34 SystemZCP::SystemZCPModifier Modifier; 35 36protected: 37 SystemZConstantPoolValue(const GlobalValue *GV, 38 SystemZCP::SystemZCPModifier Modifier); 39 40public: 41 static SystemZConstantPoolValue * 42 Create(const GlobalValue *GV, SystemZCP::SystemZCPModifier Modifier); 43 44 // Override MachineConstantPoolValue. 45 int getExistingMachineCPValue(MachineConstantPool *CP, 46 Align Alignment) override; 47 void addSelectionDAGCSEId(FoldingSetNodeID &ID) override; 48 void print(raw_ostream &O) const override; 49 50 // Access SystemZ-specific fields. 51 const GlobalValue *getGlobalValue() const { return GV; } 52 SystemZCP::SystemZCPModifier getModifier() const { return Modifier; } 53}; 54 55} // end namespace llvm 56 57#endif 58