1 //===-- SystemZSubtarget.h - SystemZ subtarget information -----*- C++ -*--===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares the SystemZ specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
14 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
15 
16 #include "SystemZFrameLowering.h"
17 #include "SystemZISelLowering.h"
18 #include "SystemZInstrInfo.h"
19 #include "SystemZRegisterInfo.h"
20 #include "SystemZSelectionDAGInfo.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/CodeGen/TargetSubtargetInfo.h"
23 #include "llvm/IR/DataLayout.h"
24 #include <string>
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "SystemZGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 class GlobalValue;
31 class StringRef;
32 
33 class SystemZSubtarget : public SystemZGenSubtargetInfo {
34   virtual void anchor();
35 protected:
36   bool HasDistinctOps;
37   bool HasLoadStoreOnCond;
38   bool HasHighWord;
39   bool HasFPExtension;
40   bool HasPopulationCount;
41   bool HasMessageSecurityAssist3;
42   bool HasMessageSecurityAssist4;
43   bool HasResetReferenceBitsMultiple;
44   bool HasFastSerialization;
45   bool HasInterlockedAccess1;
46   bool HasMiscellaneousExtensions;
47   bool HasExecutionHint;
48   bool HasLoadAndTrap;
49   bool HasTransactionalExecution;
50   bool HasProcessorAssist;
51   bool HasDFPZonedConversion;
52   bool HasEnhancedDAT2;
53   bool HasVector;
54   bool HasLoadStoreOnCond2;
55   bool HasLoadAndZeroRightmostByte;
56   bool HasMessageSecurityAssist5;
57   bool HasDFPPackedConversion;
58   bool HasMiscellaneousExtensions2;
59   bool HasGuardedStorage;
60   bool HasMessageSecurityAssist7;
61   bool HasMessageSecurityAssist8;
62   bool HasVectorEnhancements1;
63   bool HasVectorPackedDecimal;
64   bool HasInsertReferenceBitsMultiple;
65   bool HasMiscellaneousExtensions3;
66   bool HasMessageSecurityAssist9;
67   bool HasVectorEnhancements2;
68   bool HasVectorPackedDecimalEnhancement;
69   bool HasEnhancedSort;
70   bool HasDeflateConversion;
71 
72 private:
73   Triple TargetTriple;
74   SystemZInstrInfo InstrInfo;
75   SystemZTargetLowering TLInfo;
76   SystemZSelectionDAGInfo TSInfo;
77   SystemZFrameLowering FrameLowering;
78 
79   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
80                                                     StringRef FS);
81 public:
82   SystemZSubtarget(const Triple &TT, const std::string &CPU,
83                    const std::string &FS, const TargetMachine &TM);
84 
85   const TargetFrameLowering *getFrameLowering() const override {
86     return &FrameLowering;
87   }
88   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
89   const SystemZRegisterInfo *getRegisterInfo() const override {
90     return &InstrInfo.getRegisterInfo();
91   }
92   const SystemZTargetLowering *getTargetLowering() const override {
93     return &TLInfo;
94   }
95   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
96     return &TSInfo;
97   }
98 
99   // True if the subtarget should run MachineScheduler after aggressive
100   // coalescing. This currently replaces the SelectionDAG scheduler with the
101   // "source" order scheduler.
102   bool enableMachineScheduler() const override { return true; }
103 
104   // This is important for reducing register pressure in vector code.
105   bool useAA() const override { return true; }
106 
107   // Always enable the early if-conversion pass.
108   bool enableEarlyIfConversion() const override { return true; }
109 
110   // Enable tracking of subregister liveness in register allocator.
111   bool enableSubRegLiveness() const override;
112 
113   // Automatically generated by tblgen.
114   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
115 
116   // Return true if the target has the distinct-operands facility.
117   bool hasDistinctOps() const { return HasDistinctOps; }
118 
119   // Return true if the target has the load/store-on-condition facility.
120   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
121 
122   // Return true if the target has the load/store-on-condition facility 2.
123   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
124 
125   // Return true if the target has the high-word facility.
126   bool hasHighWord() const { return HasHighWord; }
127 
128   // Return true if the target has the floating-point extension facility.
129   bool hasFPExtension() const { return HasFPExtension; }
130 
131   // Return true if the target has the population-count facility.
132   bool hasPopulationCount() const { return HasPopulationCount; }
133 
134   // Return true if the target has the message-security-assist
135   // extension facility 3.
136   bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; }
137 
138   // Return true if the target has the message-security-assist
139   // extension facility 4.
140   bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; }
141 
142   // Return true if the target has the reset-reference-bits-multiple facility.
143   bool hasResetReferenceBitsMultiple() const {
144     return HasResetReferenceBitsMultiple;
145   }
146 
147   // Return true if the target has the fast-serialization facility.
148   bool hasFastSerialization() const { return HasFastSerialization; }
149 
150   // Return true if the target has interlocked-access facility 1.
151   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
152 
153   // Return true if the target has the miscellaneous-extensions facility.
154   bool hasMiscellaneousExtensions() const {
155     return HasMiscellaneousExtensions;
156   }
157 
158   // Return true if the target has the execution-hint facility.
159   bool hasExecutionHint() const { return HasExecutionHint; }
160 
161   // Return true if the target has the load-and-trap facility.
162   bool hasLoadAndTrap() const { return HasLoadAndTrap; }
163 
164   // Return true if the target has the transactional-execution facility.
165   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
166 
167   // Return true if the target has the processor-assist facility.
168   bool hasProcessorAssist() const { return HasProcessorAssist; }
169 
170   // Return true if the target has the DFP zoned-conversion facility.
171   bool hasDFPZonedConversion() const { return HasDFPZonedConversion; }
172 
173   // Return true if the target has the enhanced-DAT facility 2.
174   bool hasEnhancedDAT2() const { return HasEnhancedDAT2; }
175 
176   // Return true if the target has the load-and-zero-rightmost-byte facility.
177   bool hasLoadAndZeroRightmostByte() const {
178     return HasLoadAndZeroRightmostByte;
179   }
180 
181   // Return true if the target has the message-security-assist
182   // extension facility 5.
183   bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; }
184 
185   // Return true if the target has the DFP packed-conversion facility.
186   bool hasDFPPackedConversion() const { return HasDFPPackedConversion; }
187 
188   // Return true if the target has the vector facility.
189   bool hasVector() const { return HasVector; }
190 
191   // Return true if the target has the miscellaneous-extensions facility 2.
192   bool hasMiscellaneousExtensions2() const {
193     return HasMiscellaneousExtensions2;
194   }
195 
196   // Return true if the target has the guarded-storage facility.
197   bool hasGuardedStorage() const { return HasGuardedStorage; }
198 
199   // Return true if the target has the message-security-assist
200   // extension facility 7.
201   bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; }
202 
203   // Return true if the target has the message-security-assist
204   // extension facility 8.
205   bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; }
206 
207   // Return true if the target has the vector-enhancements facility 1.
208   bool hasVectorEnhancements1() const { return HasVectorEnhancements1; }
209 
210   // Return true if the target has the vector-packed-decimal facility.
211   bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; }
212 
213   // Return true if the target has the insert-reference-bits-multiple facility.
214   bool hasInsertReferenceBitsMultiple() const {
215     return HasInsertReferenceBitsMultiple;
216   }
217 
218   // Return true if the target has the miscellaneous-extensions facility 3.
219   bool hasMiscellaneousExtensions3() const {
220     return HasMiscellaneousExtensions3;
221   }
222 
223   // Return true if the target has the message-security-assist
224   // extension facility 9.
225   bool hasMessageSecurityAssist9() const { return HasMessageSecurityAssist9; }
226 
227   // Return true if the target has the vector-enhancements facility 2.
228   bool hasVectorEnhancements2() const { return HasVectorEnhancements2; }
229 
230   // Return true if the target has the vector-packed-decimal
231   // enhancement facility.
232   bool hasVectorPackedDecimalEnhancement() const {
233     return HasVectorPackedDecimalEnhancement;
234   }
235 
236   // Return true if the target has the enhanced-sort facility.
237   bool hasEnhancedSort() const { return HasEnhancedSort; }
238 
239   // Return true if the target has the deflate-conversion facility.
240   bool hasDeflateConversion() const { return HasDeflateConversion; }
241 
242   // Return true if GV can be accessed using LARL for reloc model RM
243   // and code model CM.
244   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
245 
246   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
247 };
248 } // end namespace llvm
249 
250 #endif
251