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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 
50 private:
51   Triple TargetTriple;
52   SystemZInstrInfo InstrInfo;
53   SystemZTargetLowering TLInfo;
54   SystemZSelectionDAGInfo TSInfo;
55   SystemZFrameLowering FrameLowering;
56 
57   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
58                                                     StringRef FS);
59 public:
60   SystemZSubtarget(const Triple &TT, const std::string &CPU,
61                    const std::string &FS, const TargetMachine &TM);
62 
getFrameLowering()63   const TargetFrameLowering *getFrameLowering() const override {
64     return &FrameLowering;
65   }
getInstrInfo()66   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
getRegisterInfo()67   const SystemZRegisterInfo *getRegisterInfo() const override {
68     return &InstrInfo.getRegisterInfo();
69   }
getTargetLowering()70   const SystemZTargetLowering *getTargetLowering() const override {
71     return &TLInfo;
72   }
getSelectionDAGInfo()73   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
74     return &TSInfo;
75   }
76 
77   // This is important for reducing register pressure in vector code.
useAA()78   bool useAA() const override { return true; }
79 
80   // Automatically generated by tblgen.
81   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
82 
83   // Return true if the target has the distinct-operands facility.
hasDistinctOps()84   bool hasDistinctOps() const { return HasDistinctOps; }
85 
86   // Return true if the target has the load/store-on-condition facility.
hasLoadStoreOnCond()87   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
88 
89   // Return true if the target has the load/store-on-condition facility 2.
hasLoadStoreOnCond2()90   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
91 
92   // Return true if the target has the high-word facility.
hasHighWord()93   bool hasHighWord() const { return HasHighWord; }
94 
95   // Return true if the target has the floating-point extension facility.
hasFPExtension()96   bool hasFPExtension() const { return HasFPExtension; }
97 
98   // Return true if the target has the population-count facility.
hasPopulationCount()99   bool hasPopulationCount() const { return HasPopulationCount; }
100 
101   // Return true if the target has the fast-serialization facility.
hasFastSerialization()102   bool hasFastSerialization() const { return HasFastSerialization; }
103 
104   // Return true if the target has interlocked-access facility 1.
hasInterlockedAccess1()105   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
106 
107   // Return true if the target has the miscellaneous-extensions facility.
hasMiscellaneousExtensions()108   bool hasMiscellaneousExtensions() const {
109     return HasMiscellaneousExtensions;
110   }
111 
112   // Return true if the target has the transactional-execution facility.
hasTransactionalExecution()113   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
114 
115   // Return true if the target has the processor-assist facility.
hasProcessorAssist()116   bool hasProcessorAssist() const { return HasProcessorAssist; }
117 
118   // Return true if the target has the vector facility.
hasVector()119   bool hasVector() const { return HasVector; }
120 
121   // Return true if GV can be accessed using LARL for reloc model RM
122   // and code model CM.
123   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
124 
isTargetELF()125   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
126 };
127 } // end namespace llvm
128 
129 #endif
130