LLVM  10.0.0svn
ARMTargetParser.cpp
Go to the documentation of this file.
1 //===-- ARMTargetParser - Parser for ARM target features --------*- 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 implements a target parser to recognise ARM hardware features
10 // such as FPU/CPU/ARCH/extensions and specific support such as HWDIV.
11 //
12 //===----------------------------------------------------------------------===//
13 
15 #include "llvm/ADT/StringSwitch.h"
16 #include <cctype>
17 
18 using namespace llvm;
19 
21  return StringSwitch<StringRef>(HWDiv)
22  .Case("thumb,arm", "arm,thumb")
23  .Default(HWDiv);
24 }
25 
26 // Allows partial match, ex. "v7a" matches "armv7a".
28  Arch = getCanonicalArchName(Arch);
29  StringRef Syn = getArchSynonym(Arch);
30  for (const auto A : ARCHNames) {
31  if (A.getName().endswith(Syn))
32  return A.ID;
33  }
34  return ArchKind::INVALID;
35 }
36 
37 // Version number (ex. v7 = 7).
39  Arch = getCanonicalArchName(Arch);
40  switch (parseArch(Arch)) {
41  case ArchKind::ARMV2:
42  case ArchKind::ARMV2A:
43  return 2;
44  case ArchKind::ARMV3:
45  case ArchKind::ARMV3M:
46  return 3;
47  case ArchKind::ARMV4:
48  case ArchKind::ARMV4T:
49  return 4;
50  case ArchKind::ARMV5T:
51  case ArchKind::ARMV5TE:
52  case ArchKind::IWMMXT:
53  case ArchKind::IWMMXT2:
54  case ArchKind::XSCALE:
55  case ArchKind::ARMV5TEJ:
56  return 5;
57  case ArchKind::ARMV6:
58  case ArchKind::ARMV6K:
59  case ArchKind::ARMV6T2:
60  case ArchKind::ARMV6KZ:
61  case ArchKind::ARMV6M:
62  return 6;
63  case ArchKind::ARMV7A:
64  case ArchKind::ARMV7VE:
65  case ArchKind::ARMV7R:
66  case ArchKind::ARMV7M:
67  case ArchKind::ARMV7S:
68  case ArchKind::ARMV7EM:
69  case ArchKind::ARMV7K:
70  return 7;
71  case ArchKind::ARMV8A:
72  case ArchKind::ARMV8_1A:
73  case ArchKind::ARMV8_2A:
74  case ArchKind::ARMV8_3A:
75  case ArchKind::ARMV8_4A:
76  case ArchKind::ARMV8_5A:
77  case ArchKind::ARMV8R:
78  case ArchKind::ARMV8MBaseline:
79  case ArchKind::ARMV8MMainline:
80  case ArchKind::ARMV8_1MMainline:
81  return 8;
82  case ArchKind::INVALID:
83  return 0;
84  }
85  llvm_unreachable("Unhandled architecture");
86 }
87 
88 // Profile A/R/M
90  Arch = getCanonicalArchName(Arch);
91  switch (parseArch(Arch)) {
92  case ArchKind::ARMV6M:
93  case ArchKind::ARMV7M:
94  case ArchKind::ARMV7EM:
95  case ArchKind::ARMV8MMainline:
96  case ArchKind::ARMV8MBaseline:
97  case ArchKind::ARMV8_1MMainline:
98  return ProfileKind::M;
99  case ArchKind::ARMV7R:
100  case ArchKind::ARMV8R:
101  return ProfileKind::R;
102  case ArchKind::ARMV7A:
103  case ArchKind::ARMV7VE:
104  case ArchKind::ARMV7K:
105  case ArchKind::ARMV8A:
106  case ArchKind::ARMV8_1A:
107  case ArchKind::ARMV8_2A:
108  case ArchKind::ARMV8_3A:
109  case ArchKind::ARMV8_4A:
110  case ArchKind::ARMV8_5A:
111  return ProfileKind::A;
112  case ArchKind::ARMV2:
113  case ArchKind::ARMV2A:
114  case ArchKind::ARMV3:
115  case ArchKind::ARMV3M:
116  case ArchKind::ARMV4:
117  case ArchKind::ARMV4T:
118  case ArchKind::ARMV5T:
119  case ArchKind::ARMV5TE:
120  case ArchKind::ARMV5TEJ:
121  case ArchKind::ARMV6:
122  case ArchKind::ARMV6K:
123  case ArchKind::ARMV6T2:
124  case ArchKind::ARMV6KZ:
125  case ArchKind::ARMV7S:
126  case ArchKind::IWMMXT:
127  case ArchKind::IWMMXT2:
128  case ArchKind::XSCALE:
129  case ArchKind::INVALID:
130  return ProfileKind::INVALID;
131  }
132  llvm_unreachable("Unhandled architecture");
133 }
134 
136  return StringSwitch<StringRef>(Arch)
137  .Case("v5", "v5t")
138  .Case("v5e", "v5te")
139  .Case("v6j", "v6")
140  .Case("v6hl", "v6k")
141  .Cases("v6m", "v6sm", "v6s-m", "v6-m")
142  .Cases("v6z", "v6zk", "v6kz")
143  .Cases("v7", "v7a", "v7hl", "v7l", "v7-a")
144  .Case("v7r", "v7-r")
145  .Case("v7m", "v7-m")
146  .Case("v7em", "v7e-m")
147  .Cases("v8", "v8a", "v8l", "aarch64", "arm64", "v8-a")
148  .Case("v8.1a", "v8.1-a")
149  .Case("v8.2a", "v8.2-a")
150  .Case("v8.3a", "v8.3-a")
151  .Case("v8.4a", "v8.4-a")
152  .Case("v8.5a", "v8.5-a")
153  .Case("v8r", "v8-r")
154  .Case("v8m.base", "v8-m.base")
155  .Case("v8m.main", "v8-m.main")
156  .Case("v8.1m.main", "v8.1-m.main")
157  .Default(Arch);
158 }
159 
160 bool ARM::getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features) {
161 
162  if (FPUKind >= FK_LAST || FPUKind == FK_INVALID)
163  return false;
164 
165  static const struct FPUFeatureNameInfo {
166  const char *PlusName, *MinusName;
167  FPUVersion MinVersion;
168  FPURestriction MaxRestriction;
169  } FPUFeatureInfoList[] = {
170  // We have to specify the + and - versions of the name in full so
171  // that we can return them as static StringRefs.
172  //
173  // Also, the SubtargetFeatures ending in just "sp" are listed here
174  // under FPURestriction::None, which is the only FPURestriction in
175  // which they would be valid (since FPURestriction::SP doesn't
176  // exist).
177 
178  {"+fpregs", "-fpregs", FPUVersion::VFPV2, FPURestriction::SP_D16},
179  {"+vfp2", "-vfp2", FPUVersion::VFPV2, FPURestriction::None},
180  {"+vfp2d16", "-vfp2d16", FPUVersion::VFPV2, FPURestriction::D16},
181  {"+vfp2d16sp", "-vfp2d16sp", FPUVersion::VFPV2, FPURestriction::SP_D16},
182  {"+vfp2sp", "-vfp2sp", FPUVersion::VFPV2, FPURestriction::None},
183  {"+vfp3", "-vfp3", FPUVersion::VFPV3, FPURestriction::None},
184  {"+vfp3d16", "-vfp3d16", FPUVersion::VFPV3, FPURestriction::D16},
185  {"+vfp3d16sp", "-vfp3d16sp", FPUVersion::VFPV3, FPURestriction::SP_D16},
186  {"+vfp3sp", "-vfp3sp", FPUVersion::VFPV3, FPURestriction::None},
187  {"+fp16", "-fp16", FPUVersion::VFPV3_FP16, FPURestriction::SP_D16},
188  {"+vfp4", "-vfp4", FPUVersion::VFPV4, FPURestriction::None},
189  {"+vfp4d16", "-vfp4d16", FPUVersion::VFPV4, FPURestriction::D16},
190  {"+vfp4d16sp", "-vfp4d16sp", FPUVersion::VFPV4, FPURestriction::SP_D16},
191  {"+vfp4sp", "-vfp4sp", FPUVersion::VFPV4, FPURestriction::None},
192  {"+fp-armv8", "-fp-armv8", FPUVersion::VFPV5, FPURestriction::None},
193  {"+fp-armv8d16", "-fp-armv8d16", FPUVersion::VFPV5, FPURestriction::D16},
194  {"+fp-armv8d16sp", "-fp-armv8d16sp", FPUVersion::VFPV5, FPURestriction::SP_D16},
195  {"+fp-armv8sp", "-fp-armv8sp", FPUVersion::VFPV5, FPURestriction::None},
196  {"+fullfp16", "-fullfp16", FPUVersion::VFPV5_FULLFP16, FPURestriction::SP_D16},
197  {"+fp64", "-fp64", FPUVersion::VFPV2, FPURestriction::D16},
198  {"+d32", "-d32", FPUVersion::VFPV2, FPURestriction::None},
199  };
200 
201  for (const auto &Info: FPUFeatureInfoList) {
202  if (FPUNames[FPUKind].FPUVer >= Info.MinVersion &&
203  FPUNames[FPUKind].Restriction <= Info.MaxRestriction)
204  Features.push_back(Info.PlusName);
205  else
206  Features.push_back(Info.MinusName);
207  }
208 
209  static const struct NeonFeatureNameInfo {
210  const char *PlusName, *MinusName;
211  NeonSupportLevel MinSupportLevel;
212  } NeonFeatureInfoList[] = {
213  {"+neon", "-neon", NeonSupportLevel::Neon},
214  {"+crypto", "-crypto", NeonSupportLevel::Crypto},
215  };
216 
217  for (const auto &Info: NeonFeatureInfoList) {
218  if (FPUNames[FPUKind].NeonSupport >= Info.MinSupportLevel)
219  Features.push_back(Info.PlusName);
220  else
221  Features.push_back(Info.MinusName);
222  }
223 
224  return true;
225 }
226 
227 // Little/Big endian
229  if (Arch.startswith("armeb") || Arch.startswith("thumbeb") ||
230  Arch.startswith("aarch64_be"))
231  return EndianKind::BIG;
232 
233  if (Arch.startswith("arm") || Arch.startswith("thumb")) {
234  if (Arch.endswith("eb"))
235  return EndianKind::BIG;
236  else
237  return EndianKind::LITTLE;
238  }
239 
240  if (Arch.startswith("aarch64") || Arch.startswith("aarch64_32"))
241  return EndianKind::LITTLE;
242 
243  return EndianKind::INVALID;
244 }
245 
246 // ARM, Thumb, AArch64
248  return StringSwitch<ISAKind>(Arch)
249  .StartsWith("aarch64", ISAKind::AARCH64)
250  .StartsWith("arm64", ISAKind::AARCH64)
251  .StartsWith("thumb", ISAKind::THUMB)
252  .StartsWith("arm", ISAKind::ARM)
253  .Default(ISAKind::INVALID);
254 }
255 
256 unsigned ARM::parseFPU(StringRef FPU) {
257  StringRef Syn = getFPUSynonym(FPU);
258  for (const auto F : FPUNames) {
259  if (Syn == F.getName())
260  return F.ID;
261  }
262  return FK_INVALID;
263 }
264 
266  if (FPUKind >= FK_LAST)
267  return NeonSupportLevel::None;
268  return FPUNames[FPUKind].NeonSupport;
269 }
270 
271 // MArch is expected to be of the form (arm|thumb)?(eb)?(v.+)?(eb)?, but
272 // (iwmmxt|xscale)(eb)? is also permitted. If the former, return
273 // "v.+", if the latter, return unmodified string, minus 'eb'.
274 // If invalid, return empty string.
276  size_t offset = StringRef::npos;
277  StringRef A = Arch;
278  StringRef Error = "";
279 
280  // Begins with "arm" / "thumb", move past it.
281  if (A.startswith("arm64_32"))
282  offset = 8;
283  else if (A.startswith("arm64"))
284  offset = 5;
285  else if (A.startswith("aarch64_32"))
286  offset = 10;
287  else if (A.startswith("arm"))
288  offset = 3;
289  else if (A.startswith("thumb"))
290  offset = 5;
291  else if (A.startswith("aarch64")) {
292  offset = 7;
293  // AArch64 uses "_be", not "eb" suffix.
294  if (A.find("eb") != StringRef::npos)
295  return Error;
296  if (A.substr(offset, 3) == "_be")
297  offset += 3;
298  }
299 
300  // Ex. "armebv7", move past the "eb".
301  if (offset != StringRef::npos && A.substr(offset, 2) == "eb")
302  offset += 2;
303  // Or, if it ends with eb ("armv7eb"), chop it off.
304  else if (A.endswith("eb"))
305  A = A.substr(0, A.size() - 2);
306  // Trim the head
307  if (offset != StringRef::npos)
308  A = A.substr(offset);
309 
310  // Empty string means offset reached the end, which means it's valid.
311  if (A.empty())
312  return Arch;
313 
314  // Only match non-marketing names
315  if (offset != StringRef::npos) {
316  // Must start with 'vN'.
317  if (A.size() >= 2 && (A[0] != 'v' || !std::isdigit(A[1])))
318  return Error;
319  // Can't have an extra 'eb'.
320  if (A.find("eb") != StringRef::npos)
321  return Error;
322  }
323 
324  // Arch will either be a 'v' name (v7a) or a marketing name (xscale).
325  return A;
326 }
327 
329  return StringSwitch<StringRef>(FPU)
330  .Cases("fpa", "fpe2", "fpe3", "maverick", "invalid") // Unsupported
331  .Case("vfp2", "vfpv2")
332  .Case("vfp3", "vfpv3")
333  .Case("vfp4", "vfpv4")
334  .Case("vfp3-d16", "vfpv3-d16")
335  .Case("vfp4-d16", "vfpv4-d16")
336  .Cases("fp4-sp-d16", "vfpv4-sp-d16", "fpv4-sp-d16")
337  .Cases("fp4-dp-d16", "fpv4-dp-d16", "vfpv4-d16")
338  .Case("fp5-sp-d16", "fpv5-sp-d16")
339  .Cases("fp5-dp-d16", "fpv5-dp-d16", "fpv5-d16")
340  // FIXME: Clang uses it, but it's bogus, since neon defaults to vfpv3.
341  .Case("neon-vfpv3", "neon")
342  .Default(FPU);
343 }
344 
346  if (FPUKind >= FK_LAST)
347  return StringRef();
348  return FPUNames[FPUKind].getName();
349 }
350 
352  if (FPUKind >= FK_LAST)
353  return FPUVersion::NONE;
354  return FPUNames[FPUKind].FPUVer;
355 }
356 
358  if (FPUKind >= FK_LAST)
359  return FPURestriction::None;
360  return FPUNames[FPUKind].Restriction;
361 }
362 
364  if (CPU == "generic")
365  return ARM::ARCHNames[static_cast<unsigned>(AK)].DefaultFPU;
366 
367  return StringSwitch<unsigned>(CPU)
368 #define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \
369  .Case(NAME, DEFAULT_FPU)
370 #include "llvm/Support/ARMTargetParser.def"
371  .Default(ARM::FK_INVALID);
372 }
373 
375  if (CPU == "generic")
376  return ARM::ARCHNames[static_cast<unsigned>(AK)].ArchBaseExtensions;
377 
378  return StringSwitch<unsigned>(CPU)
379 #define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \
380  .Case(NAME, \
381  ARCHNames[static_cast<unsigned>(ArchKind::ID)].ArchBaseExtensions | \
382  DEFAULT_EXT)
383 #include "llvm/Support/ARMTargetParser.def"
384  .Default(ARM::AEK_INVALID);
385 }
386 
387 bool ARM::getHWDivFeatures(unsigned HWDivKind,
388  std::vector<StringRef> &Features) {
389 
390  if (HWDivKind == AEK_INVALID)
391  return false;
392 
393  if (HWDivKind & AEK_HWDIVARM)
394  Features.push_back("+hwdiv-arm");
395  else
396  Features.push_back("-hwdiv-arm");
397 
398  if (HWDivKind & AEK_HWDIVTHUMB)
399  Features.push_back("+hwdiv");
400  else
401  Features.push_back("-hwdiv");
402 
403  return true;
404 }
405 
406 bool ARM::getExtensionFeatures(unsigned Extensions,
407  std::vector<StringRef> &Features) {
408 
409  if (Extensions == AEK_INVALID)
410  return false;
411 
412  for (const auto AE : ARCHExtNames) {
413  if ((Extensions & AE.ID) == AE.ID && AE.Feature)
414  Features.push_back(AE.Feature);
415  else if (AE.NegFeature)
416  Features.push_back(AE.NegFeature);
417  }
418 
419  return getHWDivFeatures(Extensions, Features);
420 }
421 
423  return ARCHNames[static_cast<unsigned>(AK)].getName();
424 }
425 
427  return ARCHNames[static_cast<unsigned>(AK)].getCPUAttr();
428 }
429 
431  return ARCHNames[static_cast<unsigned>(AK)].getSubArch();
432 }
433 
435  return ARCHNames[static_cast<unsigned>(AK)].ArchAttr;
436 }
437 
439  for (const auto AE : ARCHExtNames) {
440  if (ArchExtKind == AE.ID)
441  return AE.getName();
442  }
443  return StringRef();
444 }
445 
447  if (Name.startswith("no")) {
448  Name = Name.substr(2);
449  return true;
450  }
451  return false;
452 }
453 
455  bool Negated = stripNegationPrefix(ArchExt);
456  for (const auto AE : ARCHExtNames) {
457  if (AE.Feature && ArchExt == AE.getName())
458  return StringRef(Negated ? AE.NegFeature : AE.Feature);
459  }
460 
461  return StringRef();
462 }
463 
464 static unsigned findDoublePrecisionFPU(unsigned InputFPUKind) {
465  const ARM::FPUName &InputFPU = ARM::FPUNames[InputFPUKind];
466 
467  // If the input FPU already supports double-precision, then there
468  // isn't any different FPU we can return here.
469  //
470  // The current available FPURestriction values are None (no
471  // restriction), D16 (only 16 d-regs) and SP_D16 (16 d-regs
472  // and single precision only); there's no value representing
473  // SP restriction without D16. So this test just means 'is it
474  // SP only?'.
476  return ARM::FK_INVALID;
477 
478  // Otherwise, look for an FPU entry with all the same fields, except
479  // that SP_D16 has been replaced with just D16, representing adding
480  // double precision and not changing anything else.
481  for (const ARM::FPUName &CandidateFPU : ARM::FPUNames) {
482  if (CandidateFPU.FPUVer == InputFPU.FPUVer &&
483  CandidateFPU.NeonSupport == InputFPU.NeonSupport &&
484  CandidateFPU.Restriction == ARM::FPURestriction::D16) {
485  return CandidateFPU.ID;
486  }
487  }
488 
489  // nothing found
490  return ARM::FK_INVALID;
491 }
492 
493 static unsigned getAEKID(StringRef ArchExtName) {
494  for (const auto AE : ARM::ARCHExtNames)
495  if (AE.getName() == ArchExtName)
496  return AE.ID;
497  return ARM::AEK_INVALID;
498 }
499 
501  StringRef CPU, ARM::ArchKind AK, StringRef ArchExt,
502  std::vector<StringRef> &Features) {
503 
504  size_t StartingNumFeatures = Features.size();
505  const bool Negated = stripNegationPrefix(ArchExt);
506  unsigned ID = getAEKID(ArchExt);
507 
508  if (ID == AEK_INVALID)
509  return false;
510 
511  for (const auto AE : ARCHExtNames) {
512  if (Negated && (AE.ID & ID) == ID && AE.NegFeature)
513  Features.push_back(AE.NegFeature);
514  else if (AE.ID == ID && AE.Feature)
515  Features.push_back(AE.Feature);
516  }
517 
518  if (CPU == "")
519  CPU = "generic";
520 
521  if (ArchExt == "fp" || ArchExt == "fp.dp") {
522  unsigned FPUKind;
523  if (ArchExt == "fp.dp") {
524  if (Negated) {
525  Features.push_back("-fp64");
526  return true;
527  }
528  FPUKind = findDoublePrecisionFPU(getDefaultFPU(CPU, AK));
529  } else if (Negated) {
530  FPUKind = ARM::FK_NONE;
531  } else {
532  FPUKind = getDefaultFPU(CPU, AK);
533  }
534  return ARM::getFPUFeatures(FPUKind, Features);
535  }
536  return StartingNumFeatures != Features.size();
537 }
538 
539 StringRef ARM::getHWDivName(unsigned HWDivKind) {
540  for (const auto D : HWDivNames) {
541  if (HWDivKind == D.ID)
542  return D.getName();
543  }
544  return StringRef();
545 }
546 
548  ArchKind AK = parseArch(Arch);
549  if (AK == ArchKind::INVALID)
550  return StringRef();
551 
552  // Look for multiple AKs to find the default for pair AK+Name.
553  for (const auto CPU : CPUNames) {
554  if (CPU.ArchID == AK && CPU.Default)
555  return CPU.getName();
556  }
557 
558  // If we can't find a default then target the architecture instead
559  return "generic";
560 }
561 
562 unsigned ARM::parseHWDiv(StringRef HWDiv) {
563  StringRef Syn = getHWDivSynonym(HWDiv);
564  for (const auto D : HWDivNames) {
565  if (Syn == D.getName())
566  return D.ID;
567  }
568  return AEK_INVALID;
569 }
570 
571 unsigned ARM::parseArchExt(StringRef ArchExt) {
572  for (const auto A : ARCHExtNames) {
573  if (ArchExt == A.getName())
574  return A.ID;
575  }
576  return AEK_INVALID;
577 }
578 
580  for (const auto C : CPUNames) {
581  if (CPU == C.getName())
582  return C.ArchID;
583  }
584  return ArchKind::INVALID;
585 }
586 
588  for (const CpuNames<ArchKind> &Arch : CPUNames) {
589  if (Arch.ArchID != ArchKind::INVALID)
590  Values.push_back(Arch.getName());
591  }
592 }
593 
595  StringRef ArchName =
596  CPU.empty() ? TT.getArchName() : getArchName(parseCPUArch(CPU));
597 
598  if (TT.isOSBinFormatMachO()) {
599  if (TT.getEnvironment() == Triple::EABI ||
600  TT.getOS() == Triple::UnknownOS ||
601  parseArchProfile(ArchName) == ProfileKind::M)
602  return "aapcs";
603  if (TT.isWatchABI())
604  return "aapcs16";
605  return "apcs-gnu";
606  } else if (TT.isOSWindows())
607  // FIXME: this is invalid for WindowsCE.
608  return "aapcs";
609 
610  // Select the default based on the platform.
611  switch (TT.getEnvironment()) {
612  case Triple::Android:
613  case Triple::GNUEABI:
614  case Triple::GNUEABIHF:
615  case Triple::MuslEABI:
616  case Triple::MuslEABIHF:
617  return "aapcs-linux";
618  case Triple::EABIHF:
619  case Triple::EABI:
620  return "aapcs";
621  default:
622  if (TT.isOSNetBSD())
623  return "apcs-gnu";
624  if (TT.isOSOpenBSD())
625  return "aapcs-linux";
626  return "aapcs";
627  }
628 }
uint64_t CallInst * C
StringRef getName() const
ISAKind parseArchISA(StringRef Arch)
LLVM_NODISCARD bool endswith(StringRef Suffix) const
Check if this string ends with the given Suffix.
Definition: StringRef.h:267
FPUVersion getFPUVersion(unsigned FPUKind)
This class represents lattice values for constants.
Definition: AllocatorList.h:23
bool appendArchExtFeatures(StringRef CPU, ARM::ArchKind AK, StringRef ArchExt, std::vector< StringRef > &Features)
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
OSType getOS() const
getOS - Get the parsed operating system type of this triple.
Definition: Triple.h:305
LLVM_NODISCARD bool startswith(StringRef Prefix) const
Check if this string starts with the given Prefix.
Definition: StringRef.h:256
void push_back(const T &Elt)
Definition: SmallVector.h:211
StringRef getArchExtFeature(StringRef ArchExt)
StringSwitch & StartsWith(StringLiteral S, T Value)
Definition: StringSwitch.h:81
F(f)
StringRef getCPUAttr(ArchKind AK)
StringRef getCPUAttr(ArchKind AK)
StringSwitch & Case(StringLiteral S, T Value)
Definition: StringSwitch.h:67
static const FPUName FPUNames[]
unsigned getDefaultFPU(StringRef CPU, ArchKind AK)
bool getHWDivFeatures(unsigned HWDivKind, std::vector< StringRef > &Features)
unsigned getDefaultFPU(StringRef CPU, ArchKind AK)
NeonSupportLevel NeonSupport
StringRef getArchName(ArchKind AK)
LLVM_NODISCARD R Default(T Value)
Definition: StringSwitch.h:181
static StringRef getName(Value *V)
StringRef getCanonicalArchName(StringRef Arch)
LLVM_NODISCARD StringRef substr(size_t Start, size_t N=npos) const
Return a reference to the substring from [Start, Start + N).
Definition: StringRef.h:578
LLVM_NODISCARD bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:126
NeonSupportLevel getFPUNeonSupportLevel(unsigned FPUKind)
static StringRef getHWDivSynonym(StringRef HWDiv)
LLVM_NODISCARD size_t size() const
size - Get the string size.
Definition: StringRef.h:130
bool isOSNetBSD() const
Definition: Triple.h:493
static unsigned findDoublePrecisionFPU(unsigned InputFPUKind)
Analysis containing CSE Info
Definition: CSEInfo.cpp:20
StringRef getArchName(ArchKind AK)
bool isOSWindows() const
Tests whether the OS is Windows.
Definition: Triple.h:538
A switch()-like statement whose cases are string literals.
Definition: StringSwitch.h:42
StringSwitch & Cases(StringLiteral S0, StringLiteral S1, T Value)
Definition: StringSwitch.h:88
StringRef getDefaultCPU(StringRef Arch)
EndianKind parseArchEndian(StringRef Arch)
bool isOSOpenBSD() const
Definition: Triple.h:497
bool isWatchABI() const
Definition: Triple.h:476
LLVM_NODISCARD size_t find(char C, size_t From=0) const
Search for the first character C in the string.
Definition: StringRef.h:285
bool isOSBinFormatMachO() const
Tests whether the environment is MachO.
Definition: Triple.h:633
Only single-precision instructions, with 16 D registers.
StringRef getFPUSynonym(StringRef FPU)
unsigned parseArchVersion(StringRef Arch)
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
FPURestriction getFPURestriction(unsigned FPUKind)
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
static const ArchNames< ArchKind > ARCHNames[]
StringRef getArchSynonym(StringRef Arch)
StringRef getArchName() const
getArchName - Get the architecture (first) component of the triple.
Definition: Triple.cpp:989
StringRef computeDefaultTargetABI(const Triple &TT, StringRef CPU)
ArchKind parseArch(StringRef Arch)
A no-op fixup.
Definition: MCFixup.h:23
EnvironmentType getEnvironment() const
getEnvironment - Get the parsed environment type of this triple.
Definition: Triple.h:314
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
StringRef getHWDivName(unsigned HWDivKind)
#define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT)
StringRef getArchExtName(unsigned ArchExtKind)
void fillValidCPUArchList(SmallVectorImpl< StringRef > &Values)
ProfileKind parseArchProfile(StringRef Arch)
bool getExtensionFeatures(unsigned Extensions, std::vector< StringRef > &Features)
ArchKind parseCPUArch(StringRef CPU)
static const size_t npos
Definition: StringRef.h:50
FPURestriction Restriction
unsigned parseArchExt(StringRef ArchExt)
StringRef getName() const
Return a constant reference to the value&#39;s name.
Definition: Value.cpp:214
Only 16 D registers.
static GCRegistry::Add< ErlangGC > A("erlang", "erlang-compatible garbage collector")
StringRef getFPUName(unsigned FPUKind)
unsigned getDefaultExtensions(StringRef CPU, ArchKind AK)
ArchKind parseCPUArch(StringRef CPU)
static Triple::ArchType parseArch(StringRef ArchName)
Definition: Triple.cpp:386
StringRef getSubArch(ArchKind AK)
StringRef getSubArch(ArchKind AK)
bool getFPUFeatures(unsigned FPUKind, std::vector< StringRef > &Features)
const ExtName ARCHExtNames[]
Lightweight error class with error context and mandatory checking.
Definition: Error.h:157
unsigned parseHWDiv(StringRef HWDiv)
unsigned parseFPU(StringRef FPU)
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
unsigned getArchAttr(ArchKind AK)
static unsigned getAEKID(StringRef ArchExtName)
const CpuNames< ArchKind > CPUNames[]
const struct llvm::ARM::@315 HWDivNames[]
static bool stripNegationPrefix(StringRef &Name)