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