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/ADT/Triple.h"
23 #include "llvm/IR/DataLayout.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 HasMessageSecurityAssist3;
43   bool HasMessageSecurityAssist4;
44   bool HasResetReferenceBitsMultiple;
45   bool HasFastSerialization;
46   bool HasInterlockedAccess1;
47   bool HasMiscellaneousExtensions;
48   bool HasExecutionHint;
49   bool HasLoadAndTrap;
50   bool HasTransactionalExecution;
51   bool HasProcessorAssist;
52   bool HasDFPZonedConversion;
53   bool HasEnhancedDAT2;
54   bool HasVector;
55   bool HasLoadStoreOnCond2;
56   bool HasLoadAndZeroRightmostByte;
57   bool HasMessageSecurityAssist5;
58   bool HasDFPPackedConversion;
59   bool HasMiscellaneousExtensions2;
60   bool HasGuardedStorage;
61   bool HasMessageSecurityAssist7;
62   bool HasMessageSecurityAssist8;
63   bool HasVectorEnhancements1;
64   bool HasVectorPackedDecimal;
65   bool HasInsertReferenceBitsMultiple;
66 
67 private:
68   Triple TargetTriple;
69   SystemZInstrInfo InstrInfo;
70   SystemZTargetLowering TLInfo;
71   SystemZSelectionDAGInfo TSInfo;
72   SystemZFrameLowering FrameLowering;
73 
74   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
75                                                     StringRef FS);
76 public:
77   SystemZSubtarget(const Triple &TT, const std::string &CPU,
78                    const std::string &FS, const TargetMachine &TM);
79 
80   const TargetFrameLowering *getFrameLowering() const override {
81     return &FrameLowering;
82   }
83   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
84   const SystemZRegisterInfo *getRegisterInfo() const override {
85     return &InstrInfo.getRegisterInfo();
86   }
87   const SystemZTargetLowering *getTargetLowering() const override {
88     return &TLInfo;
89   }
90   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
91     return &TSInfo;
92   }
93 
94   // This is important for reducing register pressure in vector code.
95   bool useAA() const override { return true; }
96 
97   // Always enable the early if-conversion pass.
98   bool enableEarlyIfConversion() const override { return true; }
99 
100   // Automatically generated by tblgen.
101   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
102 
103   // Return true if the target has the distinct-operands facility.
104   bool hasDistinctOps() const { return HasDistinctOps; }
105 
106   // Return true if the target has the load/store-on-condition facility.
107   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
108 
109   // Return true if the target has the load/store-on-condition facility 2.
110   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
111 
112   // Return true if the target has the high-word facility.
113   bool hasHighWord() const { return HasHighWord; }
114 
115   // Return true if the target has the floating-point extension facility.
116   bool hasFPExtension() const { return HasFPExtension; }
117 
118   // Return true if the target has the population-count facility.
119   bool hasPopulationCount() const { return HasPopulationCount; }
120 
121   // Return true if the target has the message-security-assist
122   // extension facility 3.
123   bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; }
124 
125   // Return true if the target has the message-security-assist
126   // extension facility 4.
127   bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; }
128 
129   // Return true if the target has the reset-reference-bits-multiple facility.
130   bool hasResetReferenceBitsMultiple() const {
131     return HasResetReferenceBitsMultiple;
132   }
133 
134   // Return true if the target has the fast-serialization facility.
135   bool hasFastSerialization() const { return HasFastSerialization; }
136 
137   // Return true if the target has interlocked-access facility 1.
138   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
139 
140   // Return true if the target has the miscellaneous-extensions facility.
141   bool hasMiscellaneousExtensions() const {
142     return HasMiscellaneousExtensions;
143   }
144 
145   // Return true if the target has the execution-hint facility.
146   bool hasExecutionHint() const { return HasExecutionHint; }
147 
148   // Return true if the target has the load-and-trap facility.
149   bool hasLoadAndTrap() const { return HasLoadAndTrap; }
150 
151   // Return true if the target has the transactional-execution facility.
152   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
153 
154   // Return true if the target has the processor-assist facility.
155   bool hasProcessorAssist() const { return HasProcessorAssist; }
156 
157   // Return true if the target has the DFP zoned-conversion facility.
158   bool hasDFPZonedConversion() const { return HasDFPZonedConversion; }
159 
160   // Return true if the target has the enhanced-DAT facility 2.
161   bool hasEnhancedDAT2() const { return HasEnhancedDAT2; }
162 
163   // Return true if the target has the load-and-zero-rightmost-byte facility.
164   bool hasLoadAndZeroRightmostByte() const {
165     return HasLoadAndZeroRightmostByte;
166   }
167 
168   // Return true if the target has the message-security-assist
169   // extension facility 5.
170   bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; }
171 
172   // Return true if the target has the DFP packed-conversion facility.
173   bool hasDFPPackedConversion() const { return HasDFPPackedConversion; }
174 
175   // Return true if the target has the vector facility.
176   bool hasVector() const { return HasVector; }
177 
178   // Return true if the target has the miscellaneous-extensions facility 2.
179   bool hasMiscellaneousExtensions2() const {
180     return HasMiscellaneousExtensions2;
181   }
182 
183   // Return true if the target has the guarded-storage facility.
184   bool hasGuardedStorage() const { return HasGuardedStorage; }
185 
186   // Return true if the target has the message-security-assist
187   // extension facility 7.
188   bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; }
189 
190   // Return true if the target has the message-security-assist
191   // extension facility 8.
192   bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; }
193 
194   // Return true if the target has the vector-enhancements facility 1.
195   bool hasVectorEnhancements1() const { return HasVectorEnhancements1; }
196 
197   // Return true if the target has the vector-packed-decimal facility.
198   bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; }
199 
200   // Return true if the target has the insert-reference-bits-multiple facility.
201   bool hasInsertReferenceBitsMultiple() const {
202     return HasInsertReferenceBitsMultiple;
203   }
204 
205   // Return true if GV can be accessed using LARL for reloc model RM
206   // and code model CM.
207   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
208 
209   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
210 };
211 } // end namespace llvm
212 
213 #endif
214