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 
24 namespace llvm {
25 class GlobalValue;
26 class StringRef;
27 
28 class SystemZSubtarget : public SystemZGenSubtargetInfo {
29   virtual void anchor();
30 protected:
31   bool HasDistinctOps;
32   bool HasLoadStoreOnCond;
33   bool HasHighWord;
34   bool HasFPExtension;
35   bool HasFastSerialization;
36   bool HasInterlockedAccess1;
37 
38 private:
39   Triple TargetTriple;
40 
41 public:
42   SystemZSubtarget(const std::string &TT, const std::string &CPU,
43                    const std::string &FS);
44 
45   // This is important for reducing register pressure in vector code.
46   virtual bool useAA() const LLVM_OVERRIDE { return true; }
47 
48   // Automatically generated by tblgen.
49   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
50 
51   // Return true if the target has the distinct-operands facility.
52   bool hasDistinctOps() const { return HasDistinctOps; }
53 
54   // Return true if the target has the load/store-on-condition facility.
55   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
56 
57   // Return true if the target has the high-word facility.
58   bool hasHighWord() const { return HasHighWord; }
59 
60   // Return true if the target has the floating-point extension facility.
61   bool hasFPExtension() const { return HasFPExtension; }
62 
63   // Return true if the target has the fast-serialization facility.
64   bool hasFastSerialization() const { return HasFastSerialization; }
65 
66   // Return true if the target has interlocked-access facility 1.
67   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
68 
69   // Return true if GV can be accessed using LARL for reloc model RM
70   // and code model CM.
71   bool isPC32DBLSymbol(const GlobalValue *GV, Reloc::Model RM,
72                        CodeModel::Model CM) const;
73 
74   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
75 };
76 } // end namespace llvm
77 
78 #endif
79