llvm.org GIT mirror llvm / 41ca691 include / llvm / ADT / Triple.h
41ca691

Tree @41ca691 (Download .tar.gz)

Triple.h @41ca691raw · history · blame

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
//===-- llvm/ADT/Triple.h - Target triple helper class ----------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ADT_TRIPLE_H
#define LLVM_ADT_TRIPLE_H

#include "llvm/ADT/Twine.h"

// Some system headers or GCC predefined macros conflict with identifiers in
// this file.  Undefine them here.
#undef NetBSD
#undef mips
#undef sparc

namespace llvm {

/// Triple - Helper class for working with autoconf configuration names. For
/// historical reasons, we also call these 'triples' (they used to contain
/// exactly three fields).
///
/// Configuration names are strings in the canonical form:
///   ARCHITECTURE-VENDOR-OPERATING_SYSTEM
/// or
///   ARCHITECTURE-VENDOR-OPERATING_SYSTEM-ENVIRONMENT
///
/// This class is used for clients which want to support arbitrary
/// configuration names, but also want to implement certain special
/// behavior for particular configurations. This class isolates the mapping
/// from the components of the configuration name to well known IDs.
///
/// At its core the Triple class is designed to be a wrapper for a triple
/// string; the constructor does not change or normalize the triple string.
/// Clients that need to handle the non-canonical triples that users often
/// specify should use the normalize method.
///
/// See autoconf/config.guess for a glimpse into what configuration names
/// look like in practice.
class Triple {
public:
  enum ArchType {
    UnknownArch,

    arm,            // ARM (little endian): arm, armv.*, xscale
    armeb,          // ARM (big endian): armeb
    aarch64,        // AArch64 (little endian): aarch64
    aarch64_be,     // AArch64 (big endian): aarch64_be
    arc,            // ARC: Synopsys ARC
    avr,            // AVR: Atmel AVR microcontroller
    bpfel,          // eBPF or extended BPF or 64-bit BPF (little endian)
    bpfeb,          // eBPF or extended BPF or 64-bit BPF (big endian)
    hexagon,        // Hexagon: hexagon
    mips,           // MIPS: mips, mipsallegrex
    mipsel,         // MIPSEL: mipsel, mipsallegrexel
    mips64,         // MIPS64: mips64
    mips64el,       // MIPS64EL: mips64el
    msp430,         // MSP430: msp430
    nios2,          // NIOSII: nios2
    ppc,            // PPC: powerpc
    ppc64,          // PPC64: powerpc64, ppu
    ppc64le,        // PPC64LE: powerpc64le
    r600,           // R600: AMD GPUs HD2XXX - HD6XXX
    amdgcn,         // AMDGCN: AMD GCN GPUs
    riscv32,        // RISC-V (32-bit): riscv32
    riscv64,        // RISC-V (64-bit): riscv64
    sparc,          // Sparc: sparc
    sparcv9,        // Sparcv9: Sparcv9
    sparcel,        // Sparc: (endianness = little). NB: 'Sparcle' is a CPU variant
    systemz,        // SystemZ: s390x
    tce,            // TCE (http://tce.cs.tut.fi/): tce
    tcele,          // TCE little endian (http://tce.cs.tut.fi/): tcele
    thumb,          // Thumb (little endian): thumb, thumbv.*
    thumbeb,        // Thumb (big endian): thumbeb
    x86,            // X86: i[3-9]86
    x86_64,         // X86-64: amd64, x86_64
    xcore,          // XCore: xcore
    nvptx,          // NVPTX: 32-bit
    nvptx64,        // NVPTX: 64-bit
    le32,           // le32: generic little-endian 32-bit CPU (PNaCl)
    le64,           // le64: generic little-endian 64-bit CPU (PNaCl)
    amdil,          // AMDIL
    amdil64,        // AMDIL with 64-bit pointers
    hsail,          // AMD HSAIL
    hsail64,        // AMD HSAIL with 64-bit pointers
    spir,           // SPIR: standard portable IR for OpenCL 32-bit version
    spir64,         // SPIR: standard portable IR for OpenCL 64-bit version
    kalimba,        // Kalimba: generic kalimba
    shave,          // SHAVE: Movidius vector VLIW processors
    lanai,          // Lanai: Lanai 32-bit
    wasm32,         // WebAssembly with 32-bit pointers
    wasm64,         // WebAssembly with 64-bit pointers
    renderscript32, // 32-bit RenderScript
    renderscript64, // 64-bit RenderScript
    LastArchType = renderscript64
  };
  enum SubArchType {
    NoSubArch,

    ARMSubArch_v8_3a,
    ARMSubArch_v8_2a,
    ARMSubArch_v8_1a,
    ARMSubArch_v8,
    ARMSubArch_v8r,
    ARMSubArch_v8m_baseline,
    ARMSubArch_v8m_mainline,
    ARMSubArch_v7,
    ARMSubArch_v7em,
    ARMSubArch_v7m,
    ARMSubArch_v7s,
    ARMSubArch_v7k,
    ARMSubArch_v7ve,
    ARMSubArch_v6,
    ARMSubArch_v6m,
    ARMSubArch_v6k,
    ARMSubArch_v6t2,
    ARMSubArch_v5,
    ARMSubArch_v5te,
    ARMSubArch_v4t,

    KalimbaSubArch_v3,
    KalimbaSubArch_v4,
    KalimbaSubArch_v5
  };
  enum VendorType {
    UnknownVendor,

    Apple,
    PC,
    SCEI,
    BGP,
    BGQ,
    Freescale,
    IBM,
    ImaginationTechnologies,
    MipsTechnologies,
    NVIDIA,
    CSR,
    Myriad,
    AMD,
    Mesa,
    SUSE,
    LastVendorType = SUSE
  };
  enum OSType {
    UnknownOS,

    Ananas,
    CloudABI,
    Darwin,
    DragonFly,
    FreeBSD,
    Fuchsia,
    IOS,
    KFreeBSD,
    Linux,
    Lv2,        // PS3
    MacOSX,
    NetBSD,
    OpenBSD,
    Solaris,
    Win32,
    Haiku,
    Minix,
    RTEMS,
    NaCl,       // Native Client
    CNK,        // BG/P Compute-Node Kernel
    AIX,
    CUDA,       // NVIDIA CUDA
    NVCL,       // NVIDIA OpenCL
    AMDHSA,     // AMD HSA Runtime
    PS4,
    ELFIAMCU,
    TvOS,       // Apple tvOS
    WatchOS,    // Apple watchOS
    Mesa3D,
    Contiki,
    AMDPAL,     // AMD PAL Runtime
    LastOSType = AMDPAL
  };
  enum EnvironmentType {
    UnknownEnvironment,

    GNU,
    GNUABIN32,
    GNUABI64,
    GNUEABI,
    GNUEABIHF,
    GNUX32,
    CODE16,
    EABI,
    EABIHF,
    Android,
    Musl,
    MuslEABI,
    MuslEABIHF,

    MSVC,
    Itanium,
    Cygnus,
    AMDOpenCL,
    CoreCLR,
    OpenCL,
    LastEnvironmentType = OpenCL
  };
  enum ObjectFormatType {
    UnknownObjectFormat,

    COFF,
    ELF,
    MachO,
    Wasm,
  };

private:
  std::string Data;

  /// The parsed arch type.
  ArchType Arch;

  /// The parsed subarchitecture type.
  SubArchType SubArch;

  /// The parsed vendor type.
  VendorType Vendor;

  /// The parsed OS type.
  OSType OS;

  /// The parsed Environment type.
  EnvironmentType Environment;

  /// The object format type.
  ObjectFormatType ObjectFormat;

public:
  /// @name Constructors
  /// @{

  /// Default constructor is the same as an empty string and leaves all
  /// triple fields unknown.
  Triple()
      : Data(), Arch(), SubArch(), Vendor(), OS(), Environment(),
        ObjectFormat() {}

  explicit Triple(const Twine &Str);
  Triple(const Twine &ArchStr, const Twine &VendorStr, const Twine &OSStr);
  Triple(const Twine &ArchStr, const Twine &VendorStr, const Twine &OSStr,
         const Twine &EnvironmentStr);

  bool operator==(const Triple &Other) const {
    return Arch == Other.Arch && SubArch == Other.SubArch &&
           Vendor == Other.Vendor && OS == Other.OS &&
           Environment == Other.Environment &&
           ObjectFormat == Other.ObjectFormat;
  }

  bool operator!=(const Triple &Other) const {
    return !(*this == Other);
  }

  /// @}
  /// @name Normalization
  /// @{

  /// normalize - Turn an arbitrary machine specification into the canonical
  /// triple form (or something sensible that the Triple class understands if
  /// nothing better can reasonably be done).  In particular, it handles the
  /// common case in which otherwise valid components are in the wrong order.
  static std::string normalize(StringRef Str);

  /// Return the normalized form of this triple's string.
  std::string normalize() const { return normalize(Data); }

  /// @}
  /// @name Typed Component Access
  /// @{

  /// getArch - Get the parsed architecture type of this triple.
  ArchType getArch() const { return Arch; }

  /// getSubArch - get the parsed subarchitecture type for this triple.
  SubArchType getSubArch() const { return SubArch; }

  /// getVendor - Get the parsed vendor type of this triple.
  VendorType getVendor() const { return Vendor; }

  /// getOS - Get the parsed operating system type of this triple.
  OSType getOS() const { return OS; }

  /// hasEnvironment - Does this triple have the optional environment
  /// (fourth) component?
  bool hasEnvironment() const {
    return getEnvironmentName() != "";
  }

  /// getEnvironment - Get the parsed environment type of this triple.
  EnvironmentType getEnvironment() const { return Environment; }

  /// Parse the version number from the OS name component of the
  /// triple, if present.
  ///
  /// For example, "fooos1.2.3" would return (1, 2, 3).
  ///
  /// If an entry is not defined, it will be returned as 0.
  void getEnvironmentVersion(unsigned &Major, unsigned &Minor,
                             unsigned &Micro) const;

  /// getFormat - Get the object format for this triple.
  ObjectFormatType getObjectFormat() const { return ObjectFormat; }

  /// getOSVersion - Parse the version number from the OS name component of the
  /// triple, if present.
  ///
  /// For example, "fooos1.2.3" would return (1, 2, 3).
  ///
  /// If an entry is not defined, it will be returned as 0.
  void getOSVersion(unsigned &Major, unsigned &Minor, unsigned &Micro) const;

  /// getOSMajorVersion - Return just the major version number, this is
  /// specialized because it is a common query.
  unsigned getOSMajorVersion() const {
    unsigned Maj, Min, Micro;
    getOSVersion(Maj, Min, Micro);
    return Maj;
  }

  /// getMacOSXVersion - Parse the version number as with getOSVersion and then
  /// translate generic "darwin" versions to the corresponding OS X versions.
  /// This may also be called with IOS triples but the OS X version number is
  /// just set to a constant 10.4.0 in that case.  Returns true if successful.
  bool getMacOSXVersion(unsigned &Major, unsigned &Minor,
                        unsigned &Micro) const;

  /// getiOSVersion - Parse the version number as with getOSVersion.  This should
  /// only be called with IOS or generic triples.
  void getiOSVersion(unsigned &Major, unsigned &Minor,
                     unsigned &Micro) const;

  /// getWatchOSVersion - Parse the version number as with getOSVersion.  This
  /// should only be called with WatchOS or generic triples.
  void getWatchOSVersion(unsigned &Major, unsigned &Minor,
                         unsigned &Micro) const;

  /// @}
  /// @name Direct Component Access
  /// @{

  const std::string &str() const { return Data; }

  const std::string &getTriple() const { return Data; }

  /// getArchName - Get the architecture (first) component of the
  /// triple.
  StringRef getArchName() const;

  /// getVendorName - Get the vendor (second) component of the triple.
  StringRef getVendorName() const;

  /// getOSName - Get the operating system (third) component of the
  /// triple.
  StringRef getOSName() const;

  /// getEnvironmentName - Get the optional environment (fourth)
  /// component of the triple, or "" if empty.
  StringRef getEnvironmentName() const;

  /// getOSAndEnvironmentName - Get the operating system and optional
  /// environment components as a single string (separated by a '-'
  /// if the environment component is present).
  StringRef getOSAndEnvironmentName() const;

  /// @}
  /// @name Convenience Predicates
  /// @{

  /// Test whether the architecture is 64-bit
  ///
  /// Note that this tests for 64-bit pointer width, and nothing else. Note
  /// that we intentionally expose only three predicates, 64-bit, 32-bit, and
  /// 16-bit. The inner details of pointer width for particular architectures
  /// is not summed up in the triple, and so only a coarse grained predicate
  /// system is provided.
  bool isArch64Bit() const;

  /// Test whether the architecture is 32-bit
  ///
  /// Note that this tests for 32-bit pointer width, and nothing else.
  bool isArch32Bit() const;

  /// Test whether the architecture is 16-bit
  ///
  /// Note that this tests for 16-bit pointer width, and nothing else.
  bool isArch16Bit() const;

  /// isOSVersionLT - Helper function for doing comparisons against version
  /// numbers included in the target triple.
  bool isOSVersionLT(unsigned Major, unsigned Minor = 0,
                     unsigned Micro = 0) const {
    unsigned LHS[3];
    getOSVersion(LHS[0], LHS[1], LHS[2]);

    if (LHS[0] != Major)
      return LHS[0] < Major;
    if (LHS[1] != Minor)
      return LHS[1] < Minor;
    if (LHS[2] != Micro)
      return LHS[1] < Micro;

    return false;
  }

  bool isOSVersionLT(const Triple &Other) const {
    unsigned RHS[3];
    Other.getOSVersion(RHS[0], RHS[1], RHS[2]);
    return isOSVersionLT(RHS[0], RHS[1], RHS[2]);
  }

  /// isMacOSXVersionLT - Comparison function for checking OS X version
  /// compatibility, which handles supporting skewed version numbering schemes
  /// used by the "darwin" triples.
  bool isMacOSXVersionLT(unsigned Major, unsigned Minor = 0,
                         unsigned Micro = 0) const {
    assert(isMacOSX() && "Not an OS X triple!");

    // If this is OS X, expect a sane version number.
    if (getOS() == Triple::MacOSX)
      return isOSVersionLT(Major, Minor, Micro);

    // Otherwise, compare to the "Darwin" number.
    assert(Major == 10 && "Unexpected major version");
    return isOSVersionLT(Minor + 4, Micro, 0);
  }

  /// isMacOSX - Is this a Mac OS X triple. For legacy reasons, we support both
  /// "darwin" and "osx" as OS X triples.
  bool isMacOSX() const {
    return getOS() == Triple::Darwin || getOS() == Triple::MacOSX;
  }

  /// Is this an iOS triple.
  /// Note: This identifies tvOS as a variant of iOS. If that ever
  /// changes, i.e., if the two operating systems diverge or their version
  /// numbers get out of sync, that will need to be changed.
  /// watchOS has completely different version numbers so it is not included.
  bool isiOS() const {
    return getOS() == Triple::IOS || isTvOS();
  }

  /// Is this an Apple tvOS triple.
  bool isTvOS() const {
    return getOS() == Triple::TvOS;
  }

  /// Is this an Apple watchOS triple.
  bool isWatchOS() const {
    return getOS() == Triple::WatchOS;
  }

  bool isWatchABI() const {
    return getSubArch() == Triple::ARMSubArch_v7k;
  }

  /// isOSDarwin - Is this a "Darwin" OS (OS X, iOS, or watchOS).
  bool isOSDarwin() const {
    return isMacOSX() || isiOS() || isWatchOS();
  }

  bool isOSNetBSD() const {
    return getOS() == Triple::NetBSD;
  }

  bool isOSOpenBSD() const {
    return getOS() == Triple::OpenBSD;
  }

  bool isOSFreeBSD() const {
    return getOS() == Triple::FreeBSD;
  }

  bool isOSFuchsia() const {
    return getOS() == Triple::Fuchsia;
  }

  bool isOSDragonFly() const { return getOS() == Triple::DragonFly; }

  bool isOSSolaris() const {
    return getOS() == Triple::Solaris;
  }

  bool isOSIAMCU() const {
    return getOS() == Triple::ELFIAMCU;
  }

  bool isGNUEnvironment() const {
    EnvironmentType Env = getEnvironment();
    return Env == Triple::GNU || Env == Triple::GNUABIN32 ||
           Env == Triple::GNUABI64 || Env == Triple::GNUEABI ||
           Env == Triple::GNUEABIHF || Env == Triple::GNUX32;
  }

  bool isOSContiki() const {
    return getOS() == Triple::Contiki;
  }

  /// Tests whether the OS is Haiku.
  bool isOSHaiku() const {
    return getOS() == Triple::Haiku;
  }

  /// Checks if the environment could be MSVC.
  bool isWindowsMSVCEnvironment() const {
    return getOS() == Triple::Win32 &&
           (getEnvironment() == Triple::UnknownEnvironment ||
            getEnvironment() == Triple::MSVC);
  }

  /// Checks if the environment is MSVC.
  bool isKnownWindowsMSVCEnvironment() const {
    return getOS() == Triple::Win32 && getEnvironment() == Triple::MSVC;
  }

  bool isWindowsCoreCLREnvironment() const {
    return getOS() == Triple::Win32 && getEnvironment() == Triple::CoreCLR;
  }

  bool isWindowsItaniumEnvironment() const {
    return getOS() == Triple::Win32 && getEnvironment() == Triple::Itanium;
  }

  bool isWindowsCygwinEnvironment() const {
    return getOS() == Triple::Win32 && getEnvironment() == Triple::Cygnus;
  }

  bool isWindowsGNUEnvironment() const {
    return getOS() == Triple::Win32 && getEnvironment() == Triple::GNU;
  }

  /// Tests for either Cygwin or MinGW OS
  bool isOSCygMing() const {
    return isWindowsCygwinEnvironment() || isWindowsGNUEnvironment();
  }

  /// Is this a "Windows" OS targeting a "MSVCRT.dll" environment.
  bool isOSMSVCRT() const {
    return isWindowsMSVCEnvironment() || isWindowsGNUEnvironment() ||
           isWindowsItaniumEnvironment();
  }

  /// Tests whether the OS is Windows.
  bool isOSWindows() const {
    return getOS() == Triple::Win32;
  }

  /// Tests whether the OS is NaCl (Native Client)
  bool isOSNaCl() const {
    return getOS() == Triple::NaCl;
  }

  /// Tests whether the OS is Linux.
  bool isOSLinux() const {
    return getOS() == Triple::Linux;
  }

  /// Tests whether the OS is kFreeBSD.
  bool isOSKFreeBSD() const {
    return getOS() == Triple::KFreeBSD;
  }

  /// Tests whether the OS uses glibc.
  bool isOSGlibc() const {
    return (getOS() == Triple::Linux || getOS() == Triple::KFreeBSD) &&
           !isAndroid();
  }

  /// Tests whether the OS uses the ELF binary format.
  bool isOSBinFormatELF() const {
    return getObjectFormat() == Triple::ELF;
  }

  /// Tests whether the OS uses the COFF binary format.
  bool isOSBinFormatCOFF() const {
    return getObjectFormat() == Triple::COFF;
  }

  /// Tests whether the environment is MachO.
  bool isOSBinFormatMachO() const {
    return getObjectFormat() == Triple::MachO;
  }

  /// Tests whether the OS uses the Wasm binary format.
  bool isOSBinFormatWasm() const {
    return getObjectFormat() == Triple::Wasm;
  }

  /// Tests whether the target is the PS4 CPU
  bool isPS4CPU() const {
    return getArch() == Triple::x86_64 &&
           getVendor() == Triple::SCEI &&
           getOS() == Triple::PS4;
  }

  /// Tests whether the target is the PS4 platform
  bool isPS4() const {
    return getVendor() == Triple::SCEI &&
           getOS() == Triple::PS4;
  }

  /// Tests whether the target is Android
  bool isAndroid() const { return getEnvironment() == Triple::Android; }

  bool isAndroidVersionLT(unsigned Major) const {
    assert(isAndroid() && "Not an Android triple!");

    unsigned Env[3];
    getEnvironmentVersion(Env[0], Env[1], Env[2]);

    // 64-bit targets did not exist before API level 21 (Lollipop).
    if (isArch64Bit() && Env[0] < 21)
      Env[0] = 21;

    return Env[0] < Major;
  }

  /// Tests whether the environment is musl-libc
  bool isMusl() const {
    return getEnvironment() == Triple::Musl ||
           getEnvironment() == Triple::MuslEABI ||
           getEnvironment() == Triple::MuslEABIHF;
  }

  /// Tests whether the target is NVPTX (32- or 64-bit).
  bool isNVPTX() const {
    return getArch() == Triple::nvptx || getArch() == Triple::nvptx64;
  }

  /// Tests whether the target is Thumb (little and big endian).
  bool isThumb() const {
    return getArch() == Triple::thumb || getArch() == Triple::thumbeb;
  }

  /// Tests whether the target is ARM (little and big endian).
  bool isARM() const {
    return getArch() == Triple::arm || getArch() == Triple::armeb;
  }

  /// Tests wether the target supports comdat
  bool supportsCOMDAT() const { return !isOSBinFormatMachO(); }

  /// @}
  /// @name Mutators
  /// @{

  /// setArch - Set the architecture (first) component of the triple
  /// to a known type.
  void setArch(ArchType Kind);

  /// setVendor - Set the vendor (second) component of the triple to a
  /// known type.
  void setVendor(VendorType Kind);

  /// setOS - Set the operating system (third) component of the triple
  /// to a known type.
  void setOS(OSType Kind);

  /// setEnvironment - Set the environment (fourth) component of the triple
  /// to a known type.
  void setEnvironment(EnvironmentType Kind);

  /// setObjectFormat - Set the object file format
  void setObjectFormat(ObjectFormatType Kind);

  /// setTriple - Set all components to the new triple \p Str.
  void setTriple(const Twine &Str);

  /// setArchName - Set the architecture (first) component of the
  /// triple by name.
  void setArchName(StringRef Str);

  /// setVendorName - Set the vendor (second) component of the triple
  /// by name.
  void setVendorName(StringRef Str);

  /// setOSName - Set the operating system (third) component of the
  /// triple by name.
  void setOSName(StringRef Str);

  /// setEnvironmentName - Set the optional environment (fourth)
  /// component of the triple by name.
  void setEnvironmentName(StringRef Str);

  /// setOSAndEnvironmentName - Set the operating system and optional
  /// environment components with a single string.
  void setOSAndEnvironmentName(StringRef Str);

  /// @}
  /// @name Helpers to build variants of a particular triple.
  /// @{

  /// Form a triple with a 32-bit variant of the current architecture.
  ///
  /// This can be used to move across "families" of architectures where useful.
  ///
  /// \returns A new triple with a 32-bit architecture or an unknown
  ///          architecture if no such variant can be found.
  llvm::Triple get32BitArchVariant() const;

  /// Form a triple with a 64-bit variant of the current architecture.
  ///
  /// This can be used to move across "families" of architectures where useful.
  ///
  /// \returns A new triple with a 64-bit architecture or an unknown
  ///          architecture if no such variant can be found.
  llvm::Triple get64BitArchVariant() const;

  /// Form a triple with a big endian variant of the current architecture.
  ///
  /// This can be used to move across "families" of architectures where useful.
  ///
  /// \returns A new triple with a big endian architecture or an unknown
  ///          architecture if no such variant can be found.
  llvm::Triple getBigEndianArchVariant() const;

  /// Form a triple with a little endian variant of the current architecture.
  ///
  /// This can be used to move across "families" of architectures where useful.
  ///
  /// \returns A new triple with a little endian architecture or an unknown
  ///          architecture if no such variant can be found.
  llvm::Triple getLittleEndianArchVariant() const;

  /// Get the (LLVM) name of the minimum ARM CPU for the arch we are targeting.
  ///
  /// \param Arch the architecture name (e.g., "armv7s"). If it is an empty
  /// string then the triple's arch name is used.
  StringRef getARMCPUForArch(StringRef Arch = StringRef()) const;

  /// Tests whether the target triple is little endian.
  ///
  /// \returns true if the triple is little endian, false otherwise.
  bool isLittleEndian() const;

  /// Test whether target triples are compatible.
  bool isCompatibleWith(const Triple &Other) const;

  /// Merge target triples.
  std::string merge(const Triple &Other) const;

  /// @}
  /// @name Static helpers for IDs.
  /// @{

  /// getArchTypeName - Get the canonical name for the \p Kind architecture.
  static StringRef getArchTypeName(ArchType Kind);

  /// getArchTypePrefix - Get the "prefix" canonical name for the \p Kind
  /// architecture. This is the prefix used by the architecture specific
  /// builtins, and is suitable for passing to \see
  /// Intrinsic::getIntrinsicForGCCBuiltin().
  ///
  /// \return - The architecture prefix, or 0 if none is defined.
  static StringRef getArchTypePrefix(ArchType Kind);

  /// getVendorTypeName - Get the canonical name for the \p Kind vendor.
  static StringRef getVendorTypeName(VendorType Kind);

  /// getOSTypeName - Get the canonical name for the \p Kind operating system.
  static StringRef getOSTypeName(OSType Kind);

  /// getEnvironmentTypeName - Get the canonical name for the \p Kind
  /// environment.
  static StringRef getEnvironmentTypeName(EnvironmentType Kind);

  /// @}
  /// @name Static helpers for converting alternate architecture names.
  /// @{

  /// getArchTypeForLLVMName - The canonical type for the given LLVM
  /// architecture name (e.g., "x86").
  static ArchType getArchTypeForLLVMName(StringRef Str);

  /// @}
};

} // End llvm namespace


#endif