1 //===-- PPC.td - Describe the PowerPC Target Machine -------*- tablegen -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This is the top level entry point for the PowerPC target.
12 //===----------------------------------------------------------------------===//
14 // Get the target-independent interfaces which we are implementing.
16 include "llvm/Target/Target.td"
18 //===----------------------------------------------------------------------===//
19 // PowerPC Subtarget features.
22 //===----------------------------------------------------------------------===//
24 //===----------------------------------------------------------------------===//
26 def Directive440 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_440", "">;
27 def Directive601 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_601", "">;
28 def Directive602 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_602", "">;
29 def Directive603 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
30 def Directive604 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
31 def Directive620 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
32 def Directive7400: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_7400", "">;
33 def Directive750 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_750", "">;
34 def Directive970 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_970", "">;
35 def Directive32 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_32", "">;
36 def Directive64 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_64", "">;
37 def DirectiveA2 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_A2", "">;
38 def DirectiveE500mc : SubtargetFeature<"", "DarwinDirective",
39 "PPC::DIR_E500mc", "">;
40 def DirectiveE5500 : SubtargetFeature<"", "DarwinDirective",
41 "PPC::DIR_E5500", "">;
42 def DirectivePwr3: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR3", "">;
43 def DirectivePwr4: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR4", "">;
44 def DirectivePwr5: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR5", "">;
45 def DirectivePwr5x: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR5X", "">;
46 def DirectivePwr6: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR6", "">;
47 def DirectivePwr6x: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR6X", "">;
48 def DirectivePwr7: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR7", "">;
49 def DirectivePwr8: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR8", "">;
51 def Feature64Bit : SubtargetFeature<"64bit","Has64BitSupport", "true",
52 "Enable 64-bit instructions">;
53 def Feature64BitRegs : SubtargetFeature<"64bitregs","Use64BitRegs", "true",
54 "Enable 64-bit registers usage for ppc32 [beta]">;
55 def FeatureCRBits : SubtargetFeature<"crbits", "UseCRBits", "true",
56 "Use condition-register bits individually">;
57 def FeatureAltivec : SubtargetFeature<"altivec","HasAltivec", "true",
58 "Enable Altivec instructions">;
59 def FeatureSPE : SubtargetFeature<"spe","HasSPE", "true",
60 "Enable SPE instructions">;
61 def FeatureMFOCRF : SubtargetFeature<"mfocrf","HasMFOCRF", "true",
62 "Enable the MFOCRF instruction">;
63 def FeatureFSqrt : SubtargetFeature<"fsqrt","HasFSQRT", "true",
64 "Enable the fsqrt instruction">;
65 def FeatureFCPSGN : SubtargetFeature<"fcpsgn", "HasFCPSGN", "true",
66 "Enable the fcpsgn instruction">;
67 def FeatureFRE : SubtargetFeature<"fre", "HasFRE", "true",
68 "Enable the fre instruction">;
69 def FeatureFRES : SubtargetFeature<"fres", "HasFRES", "true",
70 "Enable the fres instruction">;
71 def FeatureFRSQRTE : SubtargetFeature<"frsqrte", "HasFRSQRTE", "true",
72 "Enable the frsqrte instruction">;
73 def FeatureFRSQRTES : SubtargetFeature<"frsqrtes", "HasFRSQRTES", "true",
74 "Enable the frsqrtes instruction">;
75 def FeatureRecipPrec : SubtargetFeature<"recipprec", "HasRecipPrec", "true",
76 "Assume higher precision reciprocal estimates">;
77 def FeatureSTFIWX : SubtargetFeature<"stfiwx","HasSTFIWX", "true",
78 "Enable the stfiwx instruction">;
79 def FeatureLFIWAX : SubtargetFeature<"lfiwax","HasLFIWAX", "true",
80 "Enable the lfiwax instruction">;
81 def FeatureFPRND : SubtargetFeature<"fprnd", "HasFPRND", "true",
82 "Enable the fri[mnpz] instructions">;
83 def FeatureFPCVT : SubtargetFeature<"fpcvt", "HasFPCVT", "true",
84 "Enable fc[ft]* (unsigned and single-precision) and lfiwzx instructions">;
85 def FeatureISEL : SubtargetFeature<"isel","HasISEL", "true",
86 "Enable the isel instruction">;
87 def FeaturePOPCNTD : SubtargetFeature<"popcntd","HasPOPCNTD", "true",
88 "Enable the popcnt[dw] instructions">;
89 def FeatureLDBRX : SubtargetFeature<"ldbrx","HasLDBRX", "true",
90 "Enable the ldbrx instruction">;
91 def FeatureCMPB : SubtargetFeature<"cmpb", "HasCMPB", "true",
92 "Enable the cmpb instruction">;
93 def FeatureICBT : SubtargetFeature<"icbt","HasICBT", "true",
94 "Enable icbt instruction">;
95 def FeatureBookE : SubtargetFeature<"booke", "IsBookE", "true",
96 "Enable Book E instructions",
98 def FeatureMSYNC : SubtargetFeature<"msync", "HasOnlyMSYNC", "true",
99 "Has only the msync instruction instead of sync",
101 def FeatureE500 : SubtargetFeature<"e500", "IsE500", "true",
102 "Enable E500/E500mc instructions">;
103 def FeaturePPC4xx : SubtargetFeature<"ppc4xx", "IsPPC4xx", "true",
104 "Enable PPC 4xx instructions">;
105 def FeaturePPC6xx : SubtargetFeature<"ppc6xx", "IsPPC6xx", "true",
106 "Enable PPC 6xx instructions">;
107 def FeatureQPX : SubtargetFeature<"qpx","HasQPX", "true",
108 "Enable QPX instructions">;
109 def FeatureVSX : SubtargetFeature<"vsx","HasVSX", "true",
110 "Enable VSX instructions",
112 def FeatureP8Altivec : SubtargetFeature<"power8-altivec", "HasP8Altivec", "true",
113 "Enable POWER8 Altivec instructions",
115 def FeatureP8Crypto : SubtargetFeature<"crypto", "HasP8Crypto", "true",
116 "Enable POWER8 Crypto instructions",
118 def FeatureP8Vector : SubtargetFeature<"power8-vector", "HasP8Vector", "true",
119 "Enable POWER8 vector instructions",
120 [FeatureVSX, FeatureP8Altivec]>;
122 def FeatureInvariantFunctionDescriptors :
123 SubtargetFeature<"invariant-function-descriptors",
124 "HasInvariantFunctionDescriptors", "true",
125 "Assume function descriptors are invariant">;
127 def DeprecatedMFTB : SubtargetFeature<"", "DeprecatedMFTB", "true",
128 "Treat mftb as deprecated">;
129 def DeprecatedDST : SubtargetFeature<"", "DeprecatedDST", "true",
130 "Treat vector data stream cache control instructions as deprecated">;
132 // Note: Future features to add when support is extended to more
133 // recent ISA levels:
135 // DFP p6, p6x, p7 decimal floating-point instructions
136 // POPCNTB p5 through p7 popcntb and related instructions
138 //===----------------------------------------------------------------------===//
139 // Classes used for relation maps.
140 //===----------------------------------------------------------------------===//
141 // RecFormRel - Filter class used to relate non-record-form instructions with
142 // their record-form variants.
145 // AltVSXFMARel - Filter class used to relate the primary addend-killing VSX
146 // FMA instruction forms with their corresponding factor-killing forms.
151 //===----------------------------------------------------------------------===//
152 // Relation Map Definitions.
153 //===----------------------------------------------------------------------===//
155 def getRecordFormOpcode : InstrMapping {
156 let FilterClass = "RecFormRel";
157 // Instructions with the same BaseName and Interpretation64Bit values
159 let RowFields = ["BaseName", "Interpretation64Bit"];
160 // Instructions with the same RC value form a column.
161 let ColFields = ["RC"];
162 // The key column are the non-record-form instructions.
164 // Value columns RC=1
165 let ValueCols = [["1"]];
168 def getNonRecordFormOpcode : InstrMapping {
169 let FilterClass = "RecFormRel";
170 // Instructions with the same BaseName and Interpretation64Bit values
172 let RowFields = ["BaseName", "Interpretation64Bit"];
173 // Instructions with the same RC value form a column.
174 let ColFields = ["RC"];
175 // The key column are the record-form instructions.
177 // Value columns are RC=0
178 let ValueCols = [["0"]];
181 def getAltVSXFMAOpcode : InstrMapping {
182 let FilterClass = "AltVSXFMARel";
183 // Instructions with the same BaseName and Interpretation64Bit values
185 let RowFields = ["BaseName"];
186 // Instructions with the same RC value form a column.
187 let ColFields = ["IsVSXFMAAlt"];
188 // The key column are the (default) addend-killing instructions.
190 // Value columns IsVSXFMAAlt=1
191 let ValueCols = [["1"]];
194 //===----------------------------------------------------------------------===//
195 // Register File Description
196 //===----------------------------------------------------------------------===//
198 include "PPCRegisterInfo.td"
199 include "PPCSchedule.td"
200 include "PPCInstrInfo.td"
202 //===----------------------------------------------------------------------===//
203 // PowerPC processors supported.
206 def : Processor<"generic", G3Itineraries, [Directive32]>;
207 def : ProcessorModel<"440", PPC440Model, [Directive440, FeatureISEL,
208 FeatureFRES, FeatureFRSQRTE,
209 FeatureICBT, FeatureBookE,
210 FeatureMSYNC, DeprecatedMFTB]>;
211 def : ProcessorModel<"450", PPC440Model, [Directive440, FeatureISEL,
212 FeatureFRES, FeatureFRSQRTE,
213 FeatureICBT, FeatureBookE,
214 FeatureMSYNC, DeprecatedMFTB]>;
215 def : Processor<"601", G3Itineraries, [Directive601]>;
216 def : Processor<"602", G3Itineraries, [Directive602]>;
217 def : Processor<"603", G3Itineraries, [Directive603,
218 FeatureFRES, FeatureFRSQRTE]>;
219 def : Processor<"603e", G3Itineraries, [Directive603,
220 FeatureFRES, FeatureFRSQRTE]>;
221 def : Processor<"603ev", G3Itineraries, [Directive603,
222 FeatureFRES, FeatureFRSQRTE]>;
223 def : Processor<"604", G3Itineraries, [Directive604,
224 FeatureFRES, FeatureFRSQRTE]>;
225 def : Processor<"604e", G3Itineraries, [Directive604,
226 FeatureFRES, FeatureFRSQRTE]>;
227 def : Processor<"620", G3Itineraries, [Directive620,
228 FeatureFRES, FeatureFRSQRTE]>;
229 def : Processor<"750", G4Itineraries, [Directive750,
230 FeatureFRES, FeatureFRSQRTE]>;
231 def : Processor<"g3", G3Itineraries, [Directive750,
232 FeatureFRES, FeatureFRSQRTE]>;
233 def : Processor<"7400", G4Itineraries, [Directive7400, FeatureAltivec,
234 FeatureFRES, FeatureFRSQRTE]>;
235 def : Processor<"g4", G4Itineraries, [Directive7400, FeatureAltivec,
236 FeatureFRES, FeatureFRSQRTE]>;
237 def : Processor<"7450", G4PlusItineraries, [Directive7400, FeatureAltivec,
238 FeatureFRES, FeatureFRSQRTE]>;
239 def : Processor<"g4+", G4PlusItineraries, [Directive7400, FeatureAltivec,
240 FeatureFRES, FeatureFRSQRTE]>;
242 /* Since new processors generally contain a superset of features of those that
243 came before them, the idea is to make implementations of new processors
244 less error prone and easier to read.
246 list<SubtargetFeature> Power8FeatureList = ...
247 list<SubtargetFeature> FutureProcessorSpecificFeatureList =
248 [ features that Power8 does not support ]
249 list<SubtargetFeature> FutureProcessorFeatureList =
250 !listconcat(Power8FeatureList, FutureProcessorSpecificFeatureList)
252 Makes it explicit and obvious what is new in FutureProcesor vs. Power8 as
253 well as providing a single point of definition if the feature set will be
257 def ProcessorFeatures {
258 list<SubtargetFeature> Power8FeatureList =
259 [DirectivePwr8, FeatureAltivec, FeatureP8Altivec, FeatureVSX,
260 FeatureP8Vector, FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt,
261 FeatureFRE, FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
262 FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
263 FeatureFPRND, FeatureFPCVT, FeatureISEL,
264 FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX, FeatureP8Crypto,
265 Feature64Bit /*, Feature64BitRegs */, FeatureICBT,
266 DeprecatedMFTB, DeprecatedDST];
269 def : ProcessorModel<"970", G5Model,
270 [Directive970, FeatureAltivec,
271 FeatureMFOCRF, FeatureFSqrt,
272 FeatureFRES, FeatureFRSQRTE, FeatureSTFIWX,
273 Feature64Bit /*, Feature64BitRegs */]>;
274 def : ProcessorModel<"g5", G5Model,
275 [Directive970, FeatureAltivec,
276 FeatureMFOCRF, FeatureFSqrt, FeatureSTFIWX,
277 FeatureFRES, FeatureFRSQRTE,
278 Feature64Bit /*, Feature64BitRegs */,
279 DeprecatedMFTB, DeprecatedDST]>;
280 def : ProcessorModel<"e500mc", PPCE500mcModel,
281 [DirectiveE500mc, FeatureMFOCRF,
282 FeatureSTFIWX, FeatureICBT, FeatureBookE,
283 FeatureISEL, DeprecatedMFTB]>;
284 def : ProcessorModel<"e5500", PPCE5500Model,
285 [DirectiveE5500, FeatureMFOCRF, Feature64Bit,
286 FeatureSTFIWX, FeatureICBT, FeatureBookE,
287 FeatureISEL, DeprecatedMFTB]>;
288 def : ProcessorModel<"a2", PPCA2Model,
289 [DirectiveA2, FeatureICBT, FeatureBookE, FeatureMFOCRF,
290 FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
291 FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
292 FeatureSTFIWX, FeatureLFIWAX,
293 FeatureFPRND, FeatureFPCVT, FeatureISEL,
294 FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX, Feature64Bit
295 /*, Feature64BitRegs */, DeprecatedMFTB]>;
296 def : ProcessorModel<"a2q", PPCA2Model,
297 [DirectiveA2, FeatureICBT, FeatureBookE, FeatureMFOCRF,
298 FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
299 FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
300 FeatureSTFIWX, FeatureLFIWAX,
301 FeatureFPRND, FeatureFPCVT, FeatureISEL,
302 FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX, Feature64Bit
303 /*, Feature64BitRegs */, FeatureQPX, DeprecatedMFTB]>;
304 def : ProcessorModel<"pwr3", G5Model,
305 [DirectivePwr3, FeatureAltivec,
306 FeatureFRES, FeatureFRSQRTE, FeatureMFOCRF,
307 FeatureSTFIWX, Feature64Bit]>;
308 def : ProcessorModel<"pwr4", G5Model,
309 [DirectivePwr4, FeatureAltivec, FeatureMFOCRF,
310 FeatureFSqrt, FeatureFRES, FeatureFRSQRTE,
311 FeatureSTFIWX, Feature64Bit]>;
312 def : ProcessorModel<"pwr5", G5Model,
313 [DirectivePwr5, FeatureAltivec, FeatureMFOCRF,
314 FeatureFSqrt, FeatureFRE, FeatureFRES,
315 FeatureFRSQRTE, FeatureFRSQRTES,
316 FeatureSTFIWX, Feature64Bit,
317 DeprecatedMFTB, DeprecatedDST]>;
318 def : ProcessorModel<"pwr5x", G5Model,
319 [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
320 FeatureFSqrt, FeatureFRE, FeatureFRES,
321 FeatureFRSQRTE, FeatureFRSQRTES,
322 FeatureSTFIWX, FeatureFPRND, Feature64Bit,
323 DeprecatedMFTB, DeprecatedDST]>;
324 def : ProcessorModel<"pwr6", G5Model,
325 [DirectivePwr6, FeatureAltivec,
326 FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
327 FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
328 FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX, FeatureCMPB,
329 FeatureFPRND, Feature64Bit /*, Feature64BitRegs */,
330 DeprecatedMFTB, DeprecatedDST]>;
331 def : ProcessorModel<"pwr6x", G5Model,
332 [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
333 FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
334 FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
335 FeatureSTFIWX, FeatureLFIWAX, FeatureCMPB,
336 FeatureFPRND, Feature64Bit,
337 DeprecatedMFTB, DeprecatedDST]>;
338 def : ProcessorModel<"pwr7", P7Model,
339 [DirectivePwr7, FeatureAltivec, FeatureVSX,
340 FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
341 FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
342 FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
343 FeatureFPRND, FeatureFPCVT, FeatureISEL,
344 FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX,
345 Feature64Bit /*, Feature64BitRegs */,
346 DeprecatedMFTB, DeprecatedDST]>;
347 def : ProcessorModel<"pwr8", P8Model, ProcessorFeatures.Power8FeatureList>;
348 def : Processor<"ppc", G3Itineraries, [Directive32]>;
349 def : ProcessorModel<"ppc64", G5Model,
350 [Directive64, FeatureAltivec,
351 FeatureMFOCRF, FeatureFSqrt, FeatureFRES,
352 FeatureFRSQRTE, FeatureSTFIWX,
353 Feature64Bit /*, Feature64BitRegs */]>;
354 def : ProcessorModel<"ppc64le", P8Model, ProcessorFeatures.Power8FeatureList>;
356 //===----------------------------------------------------------------------===//
357 // Calling Conventions
358 //===----------------------------------------------------------------------===//
360 include "PPCCallingConv.td"
362 def PPCInstrInfo : InstrInfo {
363 let isLittleEndianEncoding = 1;
365 // FIXME: Unset this when no longer needed!
366 let decodePositionallyEncodedOperands = 1;
368 let noNamedPositionallyEncodedOperands = 1;
371 def PPCAsmParser : AsmParser {
372 let ShouldEmitMatchRegisterName = 0;
375 def PPCAsmParserVariant : AsmParserVariant {
378 // We do not use hard coded registers in asm strings. However, some
379 // InstAlias definitions use immediate literals. Set RegisterPrefix
380 // so that those are not misinterpreted as registers.
381 string RegisterPrefix = "%";
385 // Information about the instructions.
386 let InstructionSet = PPCInstrInfo;
388 let AssemblyParsers = [PPCAsmParser];
389 let AssemblyParserVariants = [PPCAsmParserVariant];