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 15 namespace llvm { 16 17 class GlobalValue; 18 19 namespace SystemZCP { 20 enum 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). 32 class SystemZConstantPoolValue : public MachineConstantPoolValue { 33 const GlobalValue *GV; 34 SystemZCP::SystemZCPModifier Modifier; 35 36 protected: 37 SystemZConstantPoolValue(const GlobalValue *GV, 38 SystemZCP::SystemZCPModifier Modifier); 39 40 public: 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