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