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