SystemZSubtarget.h revision 5a364c5561ec04e33a6f5d52c14f1bac6f247ea0 
1//===-- SystemZSubtarget.h - SystemZ subtarget information -----*- 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// This file declares the SystemZ specific subclass of TargetSubtargetInfo.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef SYSTEMZSUBTARGET_H
15#define SYSTEMZSUBTARGET_H
16
17#include "llvm/ADT/Triple.h"
18#include "llvm/Target/TargetSubtargetInfo.h"
19#include <string>
20
21#define GET_SUBTARGETINFO_HEADER
22#include "SystemZGenSubtargetInfo.inc"
23
24namespace llvm {
25class GlobalValue;
26class StringRef;
27
28class SystemZSubtarget : public SystemZGenSubtargetInfo {
29  virtual void anchor();
30protected:
31  bool HasDistinctOps;
32  bool HasLoadStoreOnCond;
33  bool HasHighWord;
34  bool HasFPExtension;
35
36private:
37  Triple TargetTriple;
38
39public:
40  SystemZSubtarget(const std::string &TT, const std::string &CPU,
41                   const std::string &FS);
42
43  // This is important for reducing register pressure in vector code.
44  virtual bool useAA() const LLVM_OVERRIDE { return true; }
45
46  // Automatically generated by tblgen.
47  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
48
49  // Return true if the target has the distinct-operands facility.
50  bool hasDistinctOps() const { return HasDistinctOps; }
51
52  // Return true if the target has the load/store-on-condition facility.
53  bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
54
55  // Return true if the target has the high-word facility.
56  bool hasHighWord() const { return HasHighWord; }
57
58  // Return true if the target has the floating-point extension facility.
59  bool hasFPExtension() const { return HasFPExtension; }
60
61  // Return true if GV can be accessed using LARL for reloc model RM
62  // and code model CM.
63  bool isPC32DBLSymbol(const GlobalValue *GV, Reloc::Model RM,
64                       CodeModel::Model CM) const;
65
66  bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
67};
68} // end namespace llvm
69
70#endif
71