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 LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
15 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
16 
17 #include "SystemZFrameLowering.h"
18 #include "SystemZISelLowering.h"
19 #include "SystemZInstrInfo.h"
20 #include "SystemZRegisterInfo.h"
21 #include "SystemZSelectionDAGInfo.h"
22 #include "llvm/IR/DataLayout.h"
23 #include "llvm/ADT/Triple.h"
24 #include "llvm/Target/TargetSubtargetInfo.h"
25 #include <string>
26 
27 #define GET_SUBTARGETINFO_HEADER
28 #include "SystemZGenSubtargetInfo.inc"
29 
30 namespace llvm {
31 class GlobalValue;
32 class StringRef;
33 
34 class SystemZSubtarget : public SystemZGenSubtargetInfo {
35   virtual void anchor();
36 protected:
37   bool HasDistinctOps;
38   bool HasLoadStoreOnCond;
39   bool HasHighWord;
40   bool HasFPExtension;
41   bool HasPopulationCount;
42   bool HasFastSerialization;
43   bool HasInterlockedAccess1;
44   bool HasMiscellaneousExtensions;
45   bool HasTransactionalExecution;
46   bool HasProcessorAssist;
47   bool HasVector;
48   bool HasLoadStoreOnCond2;
49   bool HasLoadAndZeroRightmostByte;
50 
51 private:
52   Triple TargetTriple;
53   SystemZInstrInfo InstrInfo;
54   SystemZTargetLowering TLInfo;
55   SystemZSelectionDAGInfo TSInfo;
56   SystemZFrameLowering FrameLowering;
57 
58   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
59                                                     StringRef FS);
60 public:
61   SystemZSubtarget(const Triple &TT, const std::string &CPU,
62                    const std::string &FS, const TargetMachine &TM);
63 
64   const TargetFrameLowering *getFrameLowering() const override {
65     return &FrameLowering;
66   }
67   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
68   const SystemZRegisterInfo *getRegisterInfo() const override {
69     return &InstrInfo.getRegisterInfo();
70   }
71   const SystemZTargetLowering *getTargetLowering() const override {
72     return &TLInfo;
73   }
74   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
75     return &TSInfo;
76   }
77 
78   // This is important for reducing register pressure in vector code.
79   bool useAA() const override { return true; }
80 
81   // Automatically generated by tblgen.
82   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
83 
84   // Return true if the target has the distinct-operands facility.
85   bool hasDistinctOps() const { return HasDistinctOps; }
86 
87   // Return true if the target has the load/store-on-condition facility.
88   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
89 
90   // Return true if the target has the load/store-on-condition facility 2.
91   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
92 
93   // Return true if the target has the high-word facility.
94   bool hasHighWord() const { return HasHighWord; }
95 
96   // Return true if the target has the floating-point extension facility.
97   bool hasFPExtension() const { return HasFPExtension; }
98 
99   // Return true if the target has the population-count facility.
100   bool hasPopulationCount() const { return HasPopulationCount; }
101 
102   // Return true if the target has the fast-serialization facility.
103   bool hasFastSerialization() const { return HasFastSerialization; }
104 
105   // Return true if the target has interlocked-access facility 1.
106   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
107 
108   // Return true if the target has the miscellaneous-extensions facility.
109   bool hasMiscellaneousExtensions() const {
110     return HasMiscellaneousExtensions;
111   }
112 
113   // Return true if the target has the transactional-execution facility.
114   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
115 
116   // Return true if the target has the processor-assist facility.
117   bool hasProcessorAssist() const { return HasProcessorAssist; }
118 
119   // Return true if the target has the load-and-zero-rightmost-byte facility.
120   bool hasLoadAndZeroRightmostByte() const {
121     return HasLoadAndZeroRightmostByte;
122   }
123 
124   // Return true if the target has the vector facility.
125   bool hasVector() const { return HasVector; }
126 
127   // Return true if GV can be accessed using LARL for reloc model RM
128   // and code model CM.
129   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
130 
131   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
132 };
133 } // end namespace llvm
134 
135 #endif
136