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/CodeGen/TargetSubtargetInfo.h"
24 #include "llvm/IR/DataLayout.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 
getFrameLowering()80   const TargetFrameLowering *getFrameLowering() const override {
81     return &FrameLowering;
82   }
getInstrInfo()83   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
getRegisterInfo()84   const SystemZRegisterInfo *getRegisterInfo() const override {
85     return &InstrInfo.getRegisterInfo();
86   }
getTargetLowering()87   const SystemZTargetLowering *getTargetLowering() const override {
88     return &TLInfo;
89   }
getSelectionDAGInfo()90   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
91     return &TSInfo;
92   }
93 
94   // True if the subtarget should run MachineScheduler after aggressive
95   // coalescing. This currently replaces the SelectionDAG scheduler with the
96   // "source" order scheduler.
enableMachineScheduler()97   bool enableMachineScheduler() const override { return true; }
98 
99   // This is important for reducing register pressure in vector code.
useAA()100   bool useAA() const override { return true; }
101 
102   // Always enable the early if-conversion pass.
enableEarlyIfConversion()103   bool enableEarlyIfConversion() const override { return true; }
104 
105   // Enable tracking of subregister liveness in register allocator.
106   bool enableSubRegLiveness() const override;
107 
108   // Automatically generated by tblgen.
109   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
110 
111   // Return true if the target has the distinct-operands facility.
hasDistinctOps()112   bool hasDistinctOps() const { return HasDistinctOps; }
113 
114   // Return true if the target has the load/store-on-condition facility.
hasLoadStoreOnCond()115   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
116 
117   // Return true if the target has the load/store-on-condition facility 2.
hasLoadStoreOnCond2()118   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
119 
120   // Return true if the target has the high-word facility.
hasHighWord()121   bool hasHighWord() const { return HasHighWord; }
122 
123   // Return true if the target has the floating-point extension facility.
hasFPExtension()124   bool hasFPExtension() const { return HasFPExtension; }
125 
126   // Return true if the target has the population-count facility.
hasPopulationCount()127   bool hasPopulationCount() const { return HasPopulationCount; }
128 
129   // Return true if the target has the message-security-assist
130   // extension facility 3.
hasMessageSecurityAssist3()131   bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; }
132 
133   // Return true if the target has the message-security-assist
134   // extension facility 4.
hasMessageSecurityAssist4()135   bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; }
136 
137   // Return true if the target has the reset-reference-bits-multiple facility.
hasResetReferenceBitsMultiple()138   bool hasResetReferenceBitsMultiple() const {
139     return HasResetReferenceBitsMultiple;
140   }
141 
142   // Return true if the target has the fast-serialization facility.
hasFastSerialization()143   bool hasFastSerialization() const { return HasFastSerialization; }
144 
145   // Return true if the target has interlocked-access facility 1.
hasInterlockedAccess1()146   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
147 
148   // Return true if the target has the miscellaneous-extensions facility.
hasMiscellaneousExtensions()149   bool hasMiscellaneousExtensions() const {
150     return HasMiscellaneousExtensions;
151   }
152 
153   // Return true if the target has the execution-hint facility.
hasExecutionHint()154   bool hasExecutionHint() const { return HasExecutionHint; }
155 
156   // Return true if the target has the load-and-trap facility.
hasLoadAndTrap()157   bool hasLoadAndTrap() const { return HasLoadAndTrap; }
158 
159   // Return true if the target has the transactional-execution facility.
hasTransactionalExecution()160   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
161 
162   // Return true if the target has the processor-assist facility.
hasProcessorAssist()163   bool hasProcessorAssist() const { return HasProcessorAssist; }
164 
165   // Return true if the target has the DFP zoned-conversion facility.
hasDFPZonedConversion()166   bool hasDFPZonedConversion() const { return HasDFPZonedConversion; }
167 
168   // Return true if the target has the enhanced-DAT facility 2.
hasEnhancedDAT2()169   bool hasEnhancedDAT2() const { return HasEnhancedDAT2; }
170 
171   // Return true if the target has the load-and-zero-rightmost-byte facility.
hasLoadAndZeroRightmostByte()172   bool hasLoadAndZeroRightmostByte() const {
173     return HasLoadAndZeroRightmostByte;
174   }
175 
176   // Return true if the target has the message-security-assist
177   // extension facility 5.
hasMessageSecurityAssist5()178   bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; }
179 
180   // Return true if the target has the DFP packed-conversion facility.
hasDFPPackedConversion()181   bool hasDFPPackedConversion() const { return HasDFPPackedConversion; }
182 
183   // Return true if the target has the vector facility.
hasVector()184   bool hasVector() const { return HasVector; }
185 
186   // Return true if the target has the miscellaneous-extensions facility 2.
hasMiscellaneousExtensions2()187   bool hasMiscellaneousExtensions2() const {
188     return HasMiscellaneousExtensions2;
189   }
190 
191   // Return true if the target has the guarded-storage facility.
hasGuardedStorage()192   bool hasGuardedStorage() const { return HasGuardedStorage; }
193 
194   // Return true if the target has the message-security-assist
195   // extension facility 7.
hasMessageSecurityAssist7()196   bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; }
197 
198   // Return true if the target has the message-security-assist
199   // extension facility 8.
hasMessageSecurityAssist8()200   bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; }
201 
202   // Return true if the target has the vector-enhancements facility 1.
hasVectorEnhancements1()203   bool hasVectorEnhancements1() const { return HasVectorEnhancements1; }
204 
205   // Return true if the target has the vector-packed-decimal facility.
hasVectorPackedDecimal()206   bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; }
207 
208   // Return true if the target has the insert-reference-bits-multiple facility.
hasInsertReferenceBitsMultiple()209   bool hasInsertReferenceBitsMultiple() const {
210     return HasInsertReferenceBitsMultiple;
211   }
212 
213   // Return true if GV can be accessed using LARL for reloc model RM
214   // and code model CM.
215   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
216 
isTargetELF()217   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
218 };
219 } // end namespace llvm
220 
221 #endif
222