Targets.cpp revision 6903313102c4e1ca598305850cc209b62711b1b6 
1//===--- Targets.cpp - Implement -arch option and targets -----------------===//
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 implements construction of a TargetInfo object from a
11// target triple.
12//
13//===----------------------------------------------------------------------===//
14
15#include "clang/Basic/TargetInfo.h"
16#include "clang/Basic/Builtins.h"
17#include "clang/Basic/Diagnostic.h"
18#include "clang/Basic/LangOptions.h"
19#include "clang/Basic/MacroBuilder.h"
20#include "clang/Basic/TargetBuiltins.h"
21#include "clang/Basic/TargetOptions.h"
22#include "llvm/ADT/APFloat.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/STLExtras.h"
25#include "llvm/ADT/StringRef.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/MC/MCSectionMachO.h"
29#include "llvm/Support/ErrorHandling.h"
30#include "llvm/Type.h"
31#include <algorithm>
32using namespace clang;
33
34//===----------------------------------------------------------------------===//
35//  Common code shared among targets.
36//===----------------------------------------------------------------------===//
37
38/// DefineStd - Define a macro name and standard variants.  For example if
39/// MacroName is "unix", then this will define "__unix", "__unix__", and "unix"
40/// when in GNU mode.
41static void DefineStd(MacroBuilder &Builder, StringRef MacroName,
42                      const LangOptions &Opts) {
43  assert(MacroName[0] != '_' && "Identifier should be in the user's namespace");
44
45  // If in GNU mode (e.g. -std=gnu99 but not -std=c99) define the raw identifier
46  // in the user's namespace.
47  if (Opts.GNUMode)
48    Builder.defineMacro(MacroName);
49
50  // Define __unix.
51  Builder.defineMacro("__" + MacroName);
52
53  // Define __unix__.
54  Builder.defineMacro("__" + MacroName + "__");
55}
56
57static void defineCPUMacros(MacroBuilder &Builder, StringRef CPUName,
58                            bool Tuning = true) {
59  Builder.defineMacro("__" + CPUName);
60  Builder.defineMacro("__" + CPUName + "__");
61  if (Tuning)
62    Builder.defineMacro("__tune_" + CPUName + "__");
63}
64
65//===----------------------------------------------------------------------===//
66// Defines specific to certain operating systems.
67//===----------------------------------------------------------------------===//
68
69namespace {
70template<typename TgtInfo>
71class OSTargetInfo : public TgtInfo {
72protected:
73  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
74                            MacroBuilder &Builder) const=0;
75public:
76  OSTargetInfo(const std::string& triple) : TgtInfo(triple) {}
77  virtual void getTargetDefines(const LangOptions &Opts,
78                                MacroBuilder &Builder) const {
79    TgtInfo::getTargetDefines(Opts, Builder);
80    getOSDefines(Opts, TgtInfo::getTriple(), Builder);
81  }
82
83};
84} // end anonymous namespace
85
86
87static void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
88                             const llvm::Triple &Triple,
89                             StringRef &PlatformName,
90                             VersionTuple &PlatformMinVersion) {
91  Builder.defineMacro("__APPLE_CC__", "5621");
92  Builder.defineMacro("__APPLE__");
93  Builder.defineMacro("__MACH__");
94  Builder.defineMacro("OBJC_NEW_PROPERTIES");
95
96  if (!Opts.ObjCAutoRefCount) {
97    // __weak is always defined, for use in blocks and with objc pointers.
98    Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
99
100    // Darwin defines __strong even in C mode (just to nothing).
101    if (Opts.getGC() != LangOptions::NonGC)
102      Builder.defineMacro("__strong", "__attribute__((objc_gc(strong)))");
103    else
104      Builder.defineMacro("__strong", "");
105
106    // __unsafe_unretained is defined to nothing in non-ARC mode. We even
107    // allow this in C, since one might have block pointers in structs that
108    // are used in pure C code and in Objective-C ARC.
109    Builder.defineMacro("__unsafe_unretained", "");
110  }
111
112  if (Opts.Static)
113    Builder.defineMacro("__STATIC__");
114  else
115    Builder.defineMacro("__DYNAMIC__");
116
117  if (Opts.POSIXThreads)
118    Builder.defineMacro("_REENTRANT");
119
120  // Get the platform type and version number from the triple.
121  unsigned Maj, Min, Rev;
122  if (Triple.isMacOSX()) {
123    Triple.getMacOSXVersion(Maj, Min, Rev);
124    PlatformName = "macosx";
125  } else {
126    Triple.getOSVersion(Maj, Min, Rev);
127    PlatformName = llvm::Triple::getOSTypeName(Triple.getOS());
128  }
129
130  // If -target arch-pc-win32-macho option specified, we're
131  // generating code for Win32 ABI. No need to emit
132  // __ENVIRONMENT_XX_OS_VERSION_MIN_REQUIRED__.
133  if (PlatformName == "win32") {
134    PlatformMinVersion = VersionTuple(Maj, Min, Rev);
135    return;
136  }
137
138  // Set the appropriate OS version define.
139  if (Triple.getOS() == llvm::Triple::IOS) {
140    assert(Maj < 10 && Min < 100 && Rev < 100 && "Invalid version!");
141    char Str[6];
142    Str[0] = '0' + Maj;
143    Str[1] = '0' + (Min / 10);
144    Str[2] = '0' + (Min % 10);
145    Str[3] = '0' + (Rev / 10);
146    Str[4] = '0' + (Rev % 10);
147    Str[5] = '\0';
148    Builder.defineMacro("__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__", Str);
149  } else {
150    // Note that the Driver allows versions which aren't representable in the
151    // define (because we only get a single digit for the minor and micro
152    // revision numbers). So, we limit them to the maximum representable
153    // version.
154    assert(Triple.getEnvironmentName().empty() && "Invalid environment!");
155    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
156    char Str[5];
157    Str[0] = '0' + (Maj / 10);
158    Str[1] = '0' + (Maj % 10);
159    Str[2] = '0' + std::min(Min, 9U);
160    Str[3] = '0' + std::min(Rev, 9U);
161    Str[4] = '\0';
162    Builder.defineMacro("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__", Str);
163  }
164
165  PlatformMinVersion = VersionTuple(Maj, Min, Rev);
166}
167
168namespace {
169template<typename Target>
170class DarwinTargetInfo : public OSTargetInfo<Target> {
171protected:
172  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
173                            MacroBuilder &Builder) const {
174    getDarwinDefines(Builder, Opts, Triple, this->PlatformName,
175                     this->PlatformMinVersion);
176  }
177
178public:
179  DarwinTargetInfo(const std::string& triple) :
180    OSTargetInfo<Target>(triple) {
181      llvm::Triple T = llvm::Triple(triple);
182      this->TLSSupported = T.isMacOSX() && !T.isMacOSXVersionLT(10,7);
183      this->MCountName = "\01mcount";
184    }
185
186  virtual std::string isValidSectionSpecifier(StringRef SR) const {
187    // Let MCSectionMachO validate this.
188    StringRef Segment, Section;
189    unsigned TAA, StubSize;
190    bool HasTAA;
191    return llvm::MCSectionMachO::ParseSectionSpecifier(SR, Segment, Section,
192                                                       TAA, HasTAA, StubSize);
193  }
194
195  virtual const char *getStaticInitSectionSpecifier() const {
196    // FIXME: We should return 0 when building kexts.
197    return "__TEXT,__StaticInit,regular,pure_instructions";
198  }
199
200  /// Darwin does not support protected visibility.  Darwin's "default"
201  /// is very similar to ELF's "protected";  Darwin requires a "weak"
202  /// attribute on declarations that can be dynamically replaced.
203  virtual bool hasProtectedVisibility() const {
204    return false;
205  }
206};
207
208
209// DragonFlyBSD Target
210template<typename Target>
211class DragonFlyBSDTargetInfo : public OSTargetInfo<Target> {
212protected:
213  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
214                            MacroBuilder &Builder) const {
215    // DragonFly defines; list based off of gcc output
216    Builder.defineMacro("__DragonFly__");
217    Builder.defineMacro("__DragonFly_cc_version", "100001");
218    Builder.defineMacro("__ELF__");
219    Builder.defineMacro("__KPRINTF_ATTRIBUTE__");
220    Builder.defineMacro("__tune_i386__");
221    DefineStd(Builder, "unix", Opts);
222  }
223public:
224  DragonFlyBSDTargetInfo(const std::string &triple)
225    : OSTargetInfo<Target>(triple) {
226      this->UserLabelPrefix = "";
227
228      llvm::Triple Triple(triple);
229      switch (Triple.getArch()) {
230        default:
231        case llvm::Triple::x86:
232        case llvm::Triple::x86_64:
233          this->MCountName = ".mcount";
234          break;
235      }
236  }
237};
238
239// FreeBSD Target
240template<typename Target>
241class FreeBSDTargetInfo : public OSTargetInfo<Target> {
242protected:
243  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
244                            MacroBuilder &Builder) const {
245    // FreeBSD defines; list based off of gcc output
246
247    unsigned Release = Triple.getOSMajorVersion();
248    if (Release == 0U)
249      Release = 8;
250
251    Builder.defineMacro("__FreeBSD__", Twine(Release));
252    Builder.defineMacro("__FreeBSD_cc_version", Twine(Release * 100000U + 1U));
253    Builder.defineMacro("__KPRINTF_ATTRIBUTE__");
254    DefineStd(Builder, "unix", Opts);
255    Builder.defineMacro("__ELF__");
256  }
257public:
258  FreeBSDTargetInfo(const std::string &triple)
259    : OSTargetInfo<Target>(triple) {
260      this->UserLabelPrefix = "";
261
262      llvm::Triple Triple(triple);
263      switch (Triple.getArch()) {
264        default:
265        case llvm::Triple::x86:
266        case llvm::Triple::x86_64:
267          this->MCountName = ".mcount";
268          break;
269        case llvm::Triple::mips:
270        case llvm::Triple::mipsel:
271        case llvm::Triple::ppc:
272        case llvm::Triple::ppc64:
273          this->MCountName = "_mcount";
274          break;
275        case llvm::Triple::arm:
276          this->MCountName = "__mcount";
277          break;
278      }
279
280    }
281};
282
283// Minix Target
284template<typename Target>
285class MinixTargetInfo : public OSTargetInfo<Target> {
286protected:
287  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
288                            MacroBuilder &Builder) const {
289    // Minix defines
290
291    Builder.defineMacro("__minix", "3");
292    Builder.defineMacro("_EM_WSIZE", "4");
293    Builder.defineMacro("_EM_PSIZE", "4");
294    Builder.defineMacro("_EM_SSIZE", "2");
295    Builder.defineMacro("_EM_LSIZE", "4");
296    Builder.defineMacro("_EM_FSIZE", "4");
297    Builder.defineMacro("_EM_DSIZE", "8");
298    Builder.defineMacro("__ELF__");
299    DefineStd(Builder, "unix", Opts);
300  }
301public:
302  MinixTargetInfo(const std::string &triple)
303    : OSTargetInfo<Target>(triple) {
304      this->UserLabelPrefix = "";
305    }
306};
307
308// Linux target
309template<typename Target>
310class LinuxTargetInfo : public OSTargetInfo<Target> {
311protected:
312  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
313                            MacroBuilder &Builder) const {
314    // Linux defines; list based off of gcc output
315    DefineStd(Builder, "unix", Opts);
316    DefineStd(Builder, "linux", Opts);
317    Builder.defineMacro("__gnu_linux__");
318    Builder.defineMacro("__ELF__");
319    if (Opts.POSIXThreads)
320      Builder.defineMacro("_REENTRANT");
321    if (Opts.CPlusPlus)
322      Builder.defineMacro("_GNU_SOURCE");
323  }
324public:
325  LinuxTargetInfo(const std::string& triple)
326    : OSTargetInfo<Target>(triple) {
327    this->UserLabelPrefix = "";
328    this->WIntType = TargetInfo::UnsignedInt;
329  }
330
331  virtual const char *getStaticInitSectionSpecifier() const {
332    return ".text.startup";
333  }
334};
335
336// NetBSD Target
337template<typename Target>
338class NetBSDTargetInfo : public OSTargetInfo<Target> {
339protected:
340  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
341                            MacroBuilder &Builder) const {
342    // NetBSD defines; list based off of gcc output
343    Builder.defineMacro("__NetBSD__");
344    Builder.defineMacro("__unix__");
345    Builder.defineMacro("__ELF__");
346    if (Opts.POSIXThreads)
347      Builder.defineMacro("_POSIX_THREADS");
348  }
349public:
350  NetBSDTargetInfo(const std::string &triple)
351    : OSTargetInfo<Target>(triple) {
352      this->UserLabelPrefix = "";
353    }
354};
355
356// OpenBSD Target
357template<typename Target>
358class OpenBSDTargetInfo : public OSTargetInfo<Target> {
359protected:
360  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
361                            MacroBuilder &Builder) const {
362    // OpenBSD defines; list based off of gcc output
363
364    Builder.defineMacro("__OpenBSD__");
365    DefineStd(Builder, "unix", Opts);
366    Builder.defineMacro("__ELF__");
367    if (Opts.POSIXThreads)
368      Builder.defineMacro("_POSIX_THREADS");
369  }
370public:
371  OpenBSDTargetInfo(const std::string &triple)
372    : OSTargetInfo<Target>(triple) {
373      this->UserLabelPrefix = "";
374
375      llvm::Triple Triple(triple);
376      switch (Triple.getArch()) {
377        default:
378        case llvm::Triple::x86:
379        case llvm::Triple::x86_64:
380        case llvm::Triple::arm:
381	case llvm::Triple::sparc:
382          this->MCountName = "__mcount";
383          break;
384        case llvm::Triple::mips64:
385        case llvm::Triple::mips64el:
386        case llvm::Triple::ppc:
387	case llvm::Triple::sparcv9:
388          this->MCountName = "_mcount";
389          break;
390      }
391  }
392};
393
394// PSP Target
395template<typename Target>
396class PSPTargetInfo : public OSTargetInfo<Target> {
397protected:
398  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
399                            MacroBuilder &Builder) const {
400    // PSP defines; list based on the output of the pspdev gcc toolchain.
401    Builder.defineMacro("PSP");
402    Builder.defineMacro("_PSP");
403    Builder.defineMacro("__psp__");
404    Builder.defineMacro("__ELF__");
405  }
406public:
407  PSPTargetInfo(const std::string& triple)
408    : OSTargetInfo<Target>(triple) {
409    this->UserLabelPrefix = "";
410  }
411};
412
413// PS3 PPU Target
414template<typename Target>
415class PS3PPUTargetInfo : public OSTargetInfo<Target> {
416protected:
417  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
418                            MacroBuilder &Builder) const {
419    // PS3 PPU defines.
420    Builder.defineMacro("__PPC__");
421    Builder.defineMacro("__PPU__");
422    Builder.defineMacro("__CELLOS_LV2__");
423    Builder.defineMacro("__ELF__");
424    Builder.defineMacro("__LP32__");
425    Builder.defineMacro("_ARCH_PPC64");
426    Builder.defineMacro("__powerpc64__");
427  }
428public:
429  PS3PPUTargetInfo(const std::string& triple)
430    : OSTargetInfo<Target>(triple) {
431    this->UserLabelPrefix = "";
432    this->LongWidth = this->LongAlign = 32;
433    this->PointerWidth = this->PointerAlign = 32;
434    this->IntMaxType = TargetInfo::SignedLongLong;
435    this->UIntMaxType = TargetInfo::UnsignedLongLong;
436    this->Int64Type = TargetInfo::SignedLongLong;
437    this->SizeType = TargetInfo::UnsignedInt;
438    this->DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
439                              "i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32";
440  }
441};
442
443// FIXME: Need a real SPU target.
444// PS3 SPU Target
445template<typename Target>
446class PS3SPUTargetInfo : public OSTargetInfo<Target> {
447protected:
448  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
449                            MacroBuilder &Builder) const {
450    // PS3 PPU defines.
451    Builder.defineMacro("__SPU__");
452    Builder.defineMacro("__ELF__");
453  }
454public:
455  PS3SPUTargetInfo(const std::string& triple)
456    : OSTargetInfo<Target>(triple) {
457    this->UserLabelPrefix = "";
458  }
459};
460
461// AuroraUX target
462template<typename Target>
463class AuroraUXTargetInfo : public OSTargetInfo<Target> {
464protected:
465  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
466                            MacroBuilder &Builder) const {
467    DefineStd(Builder, "sun", Opts);
468    DefineStd(Builder, "unix", Opts);
469    Builder.defineMacro("__ELF__");
470    Builder.defineMacro("__svr4__");
471    Builder.defineMacro("__SVR4");
472  }
473public:
474  AuroraUXTargetInfo(const std::string& triple)
475    : OSTargetInfo<Target>(triple) {
476    this->UserLabelPrefix = "";
477    this->WCharType = this->SignedLong;
478    // FIXME: WIntType should be SignedLong
479  }
480};
481
482// Solaris target
483template<typename Target>
484class SolarisTargetInfo : public OSTargetInfo<Target> {
485protected:
486  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
487                            MacroBuilder &Builder) const {
488    DefineStd(Builder, "sun", Opts);
489    DefineStd(Builder, "unix", Opts);
490    Builder.defineMacro("__ELF__");
491    Builder.defineMacro("__svr4__");
492    Builder.defineMacro("__SVR4");
493    // Solaris headers require _XOPEN_SOURCE to be set to 600 for C99 and
494    // newer, but to 500 for everything else.  feature_test.h has a check to
495    // ensure that you are not using C99 with an old version of X/Open or C89
496    // with a new version.
497    if (Opts.C99 || Opts.C11)
498      Builder.defineMacro("_XOPEN_SOURCE", "600");
499    else
500      Builder.defineMacro("_XOPEN_SOURCE", "500");
501    if (Opts.CPlusPlus)
502      Builder.defineMacro("__C99FEATURES__");
503    Builder.defineMacro("_LARGEFILE_SOURCE");
504    Builder.defineMacro("_LARGEFILE64_SOURCE");
505    Builder.defineMacro("__EXTENSIONS__");
506    Builder.defineMacro("_REENTRANT");
507  }
508public:
509  SolarisTargetInfo(const std::string& triple)
510    : OSTargetInfo<Target>(triple) {
511    this->UserLabelPrefix = "";
512    this->WCharType = this->SignedInt;
513    // FIXME: WIntType should be SignedLong
514  }
515};
516
517// Windows target
518template<typename Target>
519class WindowsTargetInfo : public OSTargetInfo<Target> {
520protected:
521  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
522                            MacroBuilder &Builder) const {
523    Builder.defineMacro("_WIN32");
524  }
525  void getVisualStudioDefines(const LangOptions &Opts,
526                              MacroBuilder &Builder) const {
527    if (Opts.CPlusPlus) {
528      if (Opts.RTTI)
529        Builder.defineMacro("_CPPRTTI");
530
531      if (Opts.Exceptions)
532        Builder.defineMacro("_CPPUNWIND");
533    }
534
535    if (!Opts.CharIsSigned)
536      Builder.defineMacro("_CHAR_UNSIGNED");
537
538    // FIXME: POSIXThreads isn't exactly the option this should be defined for,
539    //        but it works for now.
540    if (Opts.POSIXThreads)
541      Builder.defineMacro("_MT");
542
543    if (Opts.MSCVersion != 0)
544      Builder.defineMacro("_MSC_VER", Twine(Opts.MSCVersion));
545
546    if (Opts.MicrosoftExt) {
547      Builder.defineMacro("_MSC_EXTENSIONS");
548
549      if (Opts.CPlusPlus0x) {
550        Builder.defineMacro("_RVALUE_REFERENCES_V2_SUPPORTED");
551        Builder.defineMacro("_RVALUE_REFERENCES_SUPPORTED");
552        Builder.defineMacro("_NATIVE_NULLPTR_SUPPORTED");
553      }
554    }
555
556    Builder.defineMacro("_INTEGRAL_MAX_BITS", "64");
557  }
558
559public:
560  WindowsTargetInfo(const std::string &triple)
561    : OSTargetInfo<Target>(triple) {}
562};
563
564} // end anonymous namespace.
565
566//===----------------------------------------------------------------------===//
567// Specific target implementations.
568//===----------------------------------------------------------------------===//
569
570namespace {
571// PPC abstract base class
572class PPCTargetInfo : public TargetInfo {
573  static const Builtin::Info BuiltinInfo[];
574  static const char * const GCCRegNames[];
575  static const TargetInfo::GCCRegAlias GCCRegAliases[];
576public:
577  PPCTargetInfo(const std::string& triple) : TargetInfo(triple) {
578    LongDoubleWidth = LongDoubleAlign = 128;
579    LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble;
580  }
581
582  virtual void getTargetBuiltins(const Builtin::Info *&Records,
583                                 unsigned &NumRecords) const {
584    Records = BuiltinInfo;
585    NumRecords = clang::PPC::LastTSBuiltin-Builtin::FirstTSBuiltin;
586  }
587
588  virtual bool isCLZForZeroUndef() const { return false; }
589
590  virtual void getTargetDefines(const LangOptions &Opts,
591                                MacroBuilder &Builder) const;
592
593  virtual bool hasFeature(StringRef Feature) const;
594
595  virtual void getGCCRegNames(const char * const *&Names,
596                              unsigned &NumNames) const;
597  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
598                                unsigned &NumAliases) const;
599  virtual bool validateAsmConstraint(const char *&Name,
600                                     TargetInfo::ConstraintInfo &Info) const {
601    switch (*Name) {
602    default: return false;
603    case 'O': // Zero
604      break;
605    case 'b': // Base register
606    case 'f': // Floating point register
607      Info.setAllowsRegister();
608      break;
609    // FIXME: The following are added to allow parsing.
610    // I just took a guess at what the actions should be.
611    // Also, is more specific checking needed?  I.e. specific registers?
612    case 'd': // Floating point register (containing 64-bit value)
613    case 'v': // Altivec vector register
614      Info.setAllowsRegister();
615      break;
616    case 'w':
617      switch (Name[1]) {
618        case 'd':// VSX vector register to hold vector double data
619        case 'f':// VSX vector register to hold vector float data
620        case 's':// VSX vector register to hold scalar float data
621        case 'a':// Any VSX register
622          break;
623        default:
624          return false;
625      }
626      Info.setAllowsRegister();
627      Name++; // Skip over 'w'.
628      break;
629    case 'h': // `MQ', `CTR', or `LINK' register
630    case 'q': // `MQ' register
631    case 'c': // `CTR' register
632    case 'l': // `LINK' register
633    case 'x': // `CR' register (condition register) number 0
634    case 'y': // `CR' register (condition register)
635    case 'z': // `XER[CA]' carry bit (part of the XER register)
636      Info.setAllowsRegister();
637      break;
638    case 'I': // Signed 16-bit constant
639    case 'J': // Unsigned 16-bit constant shifted left 16 bits
640              //  (use `L' instead for SImode constants)
641    case 'K': // Unsigned 16-bit constant
642    case 'L': // Signed 16-bit constant shifted left 16 bits
643    case 'M': // Constant larger than 31
644    case 'N': // Exact power of 2
645    case 'P': // Constant whose negation is a signed 16-bit constant
646    case 'G': // Floating point constant that can be loaded into a
647              // register with one instruction per word
648    case 'H': // Integer/Floating point constant that can be loaded
649              // into a register using three instructions
650      break;
651    case 'm': // Memory operand. Note that on PowerPC targets, m can
652              // include addresses that update the base register. It
653              // is therefore only safe to use `m' in an asm statement
654              // if that asm statement accesses the operand exactly once.
655              // The asm statement must also use `%U<opno>' as a
656              // placeholder for the "update" flag in the corresponding
657              // load or store instruction. For example:
658              // asm ("st%U0 %1,%0" : "=m" (mem) : "r" (val));
659              // is correct but:
660              // asm ("st %1,%0" : "=m" (mem) : "r" (val));
661              // is not. Use es rather than m if you don't want the base
662              // register to be updated.
663    case 'e':
664      if (Name[1] != 's')
665          return false;
666              // es: A "stable" memory operand; that is, one which does not
667              // include any automodification of the base register. Unlike
668              // `m', this constraint can be used in asm statements that
669              // might access the operand several times, or that might not
670              // access it at all.
671      Info.setAllowsMemory();
672      Name++; // Skip over 'e'.
673      break;
674    case 'Q': // Memory operand that is an offset from a register (it is
675              // usually better to use `m' or `es' in asm statements)
676    case 'Z': // Memory operand that is an indexed or indirect from a
677              // register (it is usually better to use `m' or `es' in
678              // asm statements)
679      Info.setAllowsMemory();
680      Info.setAllowsRegister();
681      break;
682    case 'R': // AIX TOC entry
683    case 'a': // Address operand that is an indexed or indirect from a
684              // register (`p' is preferable for asm statements)
685    case 'S': // Constant suitable as a 64-bit mask operand
686    case 'T': // Constant suitable as a 32-bit mask operand
687    case 'U': // System V Release 4 small data area reference
688    case 't': // AND masks that can be performed by two rldic{l, r}
689              // instructions
690    case 'W': // Vector constant that does not require memory
691    case 'j': // Vector constant that is all zeros.
692      break;
693    // End FIXME.
694    }
695    return true;
696  }
697  virtual const char *getClobbers() const {
698    return "";
699  }
700};
701
702const Builtin::Info PPCTargetInfo::BuiltinInfo[] = {
703#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, ALL_LANGUAGES },
704#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER,\
705                                              ALL_LANGUAGES },
706#include "clang/Basic/BuiltinsPPC.def"
707};
708
709
710/// PPCTargetInfo::getTargetDefines - Return a set of the PowerPC-specific
711/// #defines that are not tied to a specific subtarget.
712void PPCTargetInfo::getTargetDefines(const LangOptions &Opts,
713                                     MacroBuilder &Builder) const {
714  // Target identification.
715  Builder.defineMacro("__ppc__");
716  Builder.defineMacro("_ARCH_PPC");
717  Builder.defineMacro("__powerpc__");
718  Builder.defineMacro("__POWERPC__");
719  if (PointerWidth == 64) {
720    Builder.defineMacro("_ARCH_PPC64");
721    Builder.defineMacro("_LP64");
722    Builder.defineMacro("__LP64__");
723    Builder.defineMacro("__powerpc64__");
724    Builder.defineMacro("__ppc64__");
725  } else {
726    Builder.defineMacro("__ppc__");
727  }
728
729  // Target properties.
730  if (getTriple().getOS() != llvm::Triple::NetBSD)
731    Builder.defineMacro("_BIG_ENDIAN");
732  Builder.defineMacro("__BIG_ENDIAN__");
733
734  // Subtarget options.
735  Builder.defineMacro("__NATURAL_ALIGNMENT__");
736  Builder.defineMacro("__REGISTER_PREFIX__", "");
737
738  // FIXME: Should be controlled by command line option.
739  Builder.defineMacro("__LONG_DOUBLE_128__");
740
741  if (Opts.AltiVec) {
742    Builder.defineMacro("__VEC__", "10206");
743    Builder.defineMacro("__ALTIVEC__");
744  }
745}
746
747bool PPCTargetInfo::hasFeature(StringRef Feature) const {
748  return Feature == "powerpc";
749}
750
751
752const char * const PPCTargetInfo::GCCRegNames[] = {
753  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
754  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
755  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
756  "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
757  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
758  "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
759  "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
760  "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
761  "mq", "lr", "ctr", "ap",
762  "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
763  "xer",
764  "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
765  "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15",
766  "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23",
767  "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31",
768  "vrsave", "vscr",
769  "spe_acc", "spefscr",
770  "sfp"
771};
772
773void PPCTargetInfo::getGCCRegNames(const char * const *&Names,
774                                   unsigned &NumNames) const {
775  Names = GCCRegNames;
776  NumNames = llvm::array_lengthof(GCCRegNames);
777}
778
779const TargetInfo::GCCRegAlias PPCTargetInfo::GCCRegAliases[] = {
780  // While some of these aliases do map to different registers
781  // they still share the same register name.
782  { { "0" }, "r0" },
783  { { "1"}, "r1" },
784  { { "2" }, "r2" },
785  { { "3" }, "r3" },
786  { { "4" }, "r4" },
787  { { "5" }, "r5" },
788  { { "6" }, "r6" },
789  { { "7" }, "r7" },
790  { { "8" }, "r8" },
791  { { "9" }, "r9" },
792  { { "10" }, "r10" },
793  { { "11" }, "r11" },
794  { { "12" }, "r12" },
795  { { "13" }, "r13" },
796  { { "14" }, "r14" },
797  { { "15" }, "r15" },
798  { { "16" }, "r16" },
799  { { "17" }, "r17" },
800  { { "18" }, "r18" },
801  { { "19" }, "r19" },
802  { { "20" }, "r20" },
803  { { "21" }, "r21" },
804  { { "22" }, "r22" },
805  { { "23" }, "r23" },
806  { { "24" }, "r24" },
807  { { "25" }, "r25" },
808  { { "26" }, "r26" },
809  { { "27" }, "r27" },
810  { { "28" }, "r28" },
811  { { "29" }, "r29" },
812  { { "30" }, "r30" },
813  { { "31" }, "r31" },
814  { { "fr0" }, "f0" },
815  { { "fr1" }, "f1" },
816  { { "fr2" }, "f2" },
817  { { "fr3" }, "f3" },
818  { { "fr4" }, "f4" },
819  { { "fr5" }, "f5" },
820  { { "fr6" }, "f6" },
821  { { "fr7" }, "f7" },
822  { { "fr8" }, "f8" },
823  { { "fr9" }, "f9" },
824  { { "fr10" }, "f10" },
825  { { "fr11" }, "f11" },
826  { { "fr12" }, "f12" },
827  { { "fr13" }, "f13" },
828  { { "fr14" }, "f14" },
829  { { "fr15" }, "f15" },
830  { { "fr16" }, "f16" },
831  { { "fr17" }, "f17" },
832  { { "fr18" }, "f18" },
833  { { "fr19" }, "f19" },
834  { { "fr20" }, "f20" },
835  { { "fr21" }, "f21" },
836  { { "fr22" }, "f22" },
837  { { "fr23" }, "f23" },
838  { { "fr24" }, "f24" },
839  { { "fr25" }, "f25" },
840  { { "fr26" }, "f26" },
841  { { "fr27" }, "f27" },
842  { { "fr28" }, "f28" },
843  { { "fr29" }, "f29" },
844  { { "fr30" }, "f30" },
845  { { "fr31" }, "f31" },
846  { { "cc" }, "cr0" },
847};
848
849void PPCTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
850                                     unsigned &NumAliases) const {
851  Aliases = GCCRegAliases;
852  NumAliases = llvm::array_lengthof(GCCRegAliases);
853}
854} // end anonymous namespace.
855
856namespace {
857class PPC32TargetInfo : public PPCTargetInfo {
858public:
859  PPC32TargetInfo(const std::string &triple) : PPCTargetInfo(triple) {
860    DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
861                        "i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32";
862
863    switch (getTriple().getOS()) {
864    case llvm::Triple::Linux:
865    case llvm::Triple::FreeBSD:
866    case llvm::Triple::NetBSD:
867      SizeType = UnsignedInt;
868      PtrDiffType = SignedInt;
869      IntPtrType = SignedInt;
870      break;
871    default:
872      break;
873    }
874
875    if (getTriple().getOS() == llvm::Triple::FreeBSD) {
876      LongDoubleWidth = LongDoubleAlign = 64;
877      LongDoubleFormat = &llvm::APFloat::IEEEdouble;
878    }
879  }
880
881  virtual const char *getVAListDeclaration() const {
882    // This is the ELF definition, and is overridden by the Darwin sub-target
883    return "typedef struct __va_list_tag {"
884           "  unsigned char gpr;"
885           "  unsigned char fpr;"
886           "  unsigned short reserved;"
887           "  void* overflow_arg_area;"
888           "  void* reg_save_area;"
889           "} __builtin_va_list[1];";
890  }
891};
892} // end anonymous namespace.
893
894namespace {
895class PPC64TargetInfo : public PPCTargetInfo {
896public:
897  PPC64TargetInfo(const std::string& triple) : PPCTargetInfo(triple) {
898    LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
899    IntMaxType = SignedLong;
900    UIntMaxType = UnsignedLong;
901    Int64Type = SignedLong;
902    DescriptionString = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
903                        "i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64";
904
905    if (getTriple().getOS() == llvm::Triple::FreeBSD) {
906      LongDoubleWidth = LongDoubleAlign = 64;
907      LongDoubleFormat = &llvm::APFloat::IEEEdouble;
908    }
909  }
910  virtual const char *getVAListDeclaration() const {
911    return "typedef char* __builtin_va_list;";
912  }
913};
914} // end anonymous namespace.
915
916
917namespace {
918class DarwinPPC32TargetInfo :
919  public DarwinTargetInfo<PPC32TargetInfo> {
920public:
921  DarwinPPC32TargetInfo(const std::string& triple)
922    : DarwinTargetInfo<PPC32TargetInfo>(triple) {
923    HasAlignMac68kSupport = true;
924    BoolWidth = BoolAlign = 32; //XXX support -mone-byte-bool?
925    LongLongAlign = 32;
926    SuitableAlign = 128;
927    DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
928                        "i64:32:64-f32:32:32-f64:64:64-v128:128:128-n32";
929  }
930  virtual const char *getVAListDeclaration() const {
931    return "typedef char* __builtin_va_list;";
932  }
933};
934
935class DarwinPPC64TargetInfo :
936  public DarwinTargetInfo<PPC64TargetInfo> {
937public:
938  DarwinPPC64TargetInfo(const std::string& triple)
939    : DarwinTargetInfo<PPC64TargetInfo>(triple) {
940    HasAlignMac68kSupport = true;
941    SuitableAlign = 128;
942  }
943};
944} // end anonymous namespace.
945
946namespace {
947  static const unsigned PTXAddrSpaceMap[] = {
948    0,    // opencl_global
949    4,    // opencl_local
950    1     // opencl_constant
951  };
952  class PTXTargetInfo : public TargetInfo {
953    static const char * const GCCRegNames[];
954    static const Builtin::Info BuiltinInfo[];
955    std::vector<llvm::StringRef> AvailableFeatures;
956  public:
957    PTXTargetInfo(const std::string& triple) : TargetInfo(triple) {
958      BigEndian = false;
959      TLSSupported = false;
960      LongWidth = LongAlign = 64;
961      AddrSpaceMap = &PTXAddrSpaceMap;
962      // Define available target features
963      // These must be defined in sorted order!
964      AvailableFeatures.push_back("compute10");
965      AvailableFeatures.push_back("compute11");
966      AvailableFeatures.push_back("compute12");
967      AvailableFeatures.push_back("compute13");
968      AvailableFeatures.push_back("compute20");
969      AvailableFeatures.push_back("double");
970      AvailableFeatures.push_back("no-fma");
971      AvailableFeatures.push_back("ptx20");
972      AvailableFeatures.push_back("ptx21");
973      AvailableFeatures.push_back("ptx22");
974      AvailableFeatures.push_back("ptx23");
975      AvailableFeatures.push_back("sm10");
976      AvailableFeatures.push_back("sm11");
977      AvailableFeatures.push_back("sm12");
978      AvailableFeatures.push_back("sm13");
979      AvailableFeatures.push_back("sm20");
980      AvailableFeatures.push_back("sm21");
981      AvailableFeatures.push_back("sm22");
982      AvailableFeatures.push_back("sm23");
983    }
984    virtual void getTargetDefines(const LangOptions &Opts,
985                                  MacroBuilder &Builder) const {
986      Builder.defineMacro("__PTX__");
987    }
988    virtual void getTargetBuiltins(const Builtin::Info *&Records,
989                                   unsigned &NumRecords) const {
990      Records = BuiltinInfo;
991      NumRecords = clang::PTX::LastTSBuiltin-Builtin::FirstTSBuiltin;
992    }
993    virtual bool hasFeature(StringRef Feature) const {
994      return Feature == "ptx";
995    }
996
997    virtual void getGCCRegNames(const char * const *&Names,
998                                unsigned &NumNames) const;
999    virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
1000                                  unsigned &NumAliases) const {
1001      // No aliases.
1002      Aliases = 0;
1003      NumAliases = 0;
1004    }
1005    virtual bool validateAsmConstraint(const char *&Name,
1006                                       TargetInfo::ConstraintInfo &info) const {
1007      // FIXME: implement
1008      return true;
1009    }
1010    virtual const char *getClobbers() const {
1011      // FIXME: Is this really right?
1012      return "";
1013    }
1014    virtual const char *getVAListDeclaration() const {
1015      // FIXME: implement
1016      return "typedef char* __builtin_va_list;";
1017    }
1018
1019    virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
1020                                   StringRef Name,
1021                                   bool Enabled) const;
1022  };
1023
1024  const Builtin::Info PTXTargetInfo::BuiltinInfo[] = {
1025#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, ALL_LANGUAGES },
1026#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER,\
1027                                              ALL_LANGUAGES },
1028#include "clang/Basic/BuiltinsPTX.def"
1029  };
1030
1031  const char * const PTXTargetInfo::GCCRegNames[] = {
1032    "r0"
1033  };
1034
1035  void PTXTargetInfo::getGCCRegNames(const char * const *&Names,
1036                                     unsigned &NumNames) const {
1037    Names = GCCRegNames;
1038    NumNames = llvm::array_lengthof(GCCRegNames);
1039  }
1040
1041  bool PTXTargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
1042                                        StringRef Name,
1043                                        bool Enabled) const {
1044    if(std::binary_search(AvailableFeatures.begin(), AvailableFeatures.end(),
1045                          Name)) {
1046      Features[Name] = Enabled;
1047      return true;
1048    } else {
1049      return false;
1050    }
1051  }
1052
1053  class PTX32TargetInfo : public PTXTargetInfo {
1054  public:
1055  PTX32TargetInfo(const std::string& triple) : PTXTargetInfo(triple) {
1056      PointerWidth = PointerAlign = 32;
1057      SizeType = PtrDiffType = IntPtrType = TargetInfo::UnsignedInt;
1058      DescriptionString
1059        = "e-p:32:32-i64:64:64-f64:64:64-n1:8:16:32:64";
1060    }
1061  };
1062
1063  class PTX64TargetInfo : public PTXTargetInfo {
1064  public:
1065  PTX64TargetInfo(const std::string& triple) : PTXTargetInfo(triple) {
1066      PointerWidth = PointerAlign = 64;
1067      SizeType = PtrDiffType = IntPtrType = TargetInfo::UnsignedLongLong;
1068      DescriptionString
1069        = "e-p:64:64-i64:64:64-f64:64:64-n1:8:16:32:64";
1070    }
1071  };
1072}
1073
1074namespace {
1075// MBlaze abstract base class
1076class MBlazeTargetInfo : public TargetInfo {
1077  static const char * const GCCRegNames[];
1078  static const TargetInfo::GCCRegAlias GCCRegAliases[];
1079
1080public:
1081  MBlazeTargetInfo(const std::string& triple) : TargetInfo(triple) {
1082    DescriptionString = "E-p:32:32:32-i8:8:8-i16:16:16";
1083  }
1084
1085  virtual void getTargetBuiltins(const Builtin::Info *&Records,
1086                                 unsigned &NumRecords) const {
1087    // FIXME: Implement.
1088    Records = 0;
1089    NumRecords = 0;
1090  }
1091
1092  virtual void getTargetDefines(const LangOptions &Opts,
1093                                MacroBuilder &Builder) const;
1094
1095  virtual bool hasFeature(StringRef Feature) const {
1096    return Feature == "mblaze";
1097  }
1098
1099  virtual const char *getVAListDeclaration() const {
1100    return "typedef char* __builtin_va_list;";
1101  }
1102  virtual const char *getTargetPrefix() const {
1103    return "mblaze";
1104  }
1105  virtual void getGCCRegNames(const char * const *&Names,
1106                              unsigned &NumNames) const;
1107  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
1108                                unsigned &NumAliases) const;
1109  virtual bool validateAsmConstraint(const char *&Name,
1110                                     TargetInfo::ConstraintInfo &Info) const {
1111    switch (*Name) {
1112    default: return false;
1113    case 'O': // Zero
1114      return true;
1115    case 'b': // Base register
1116    case 'f': // Floating point register
1117      Info.setAllowsRegister();
1118      return true;
1119    }
1120  }
1121  virtual const char *getClobbers() const {
1122    return "";
1123  }
1124};
1125
1126/// MBlazeTargetInfo::getTargetDefines - Return a set of the MBlaze-specific
1127/// #defines that are not tied to a specific subtarget.
1128void MBlazeTargetInfo::getTargetDefines(const LangOptions &Opts,
1129                                     MacroBuilder &Builder) const {
1130  // Target identification.
1131  Builder.defineMacro("__microblaze__");
1132  Builder.defineMacro("_ARCH_MICROBLAZE");
1133  Builder.defineMacro("__MICROBLAZE__");
1134
1135  // Target properties.
1136  Builder.defineMacro("_BIG_ENDIAN");
1137  Builder.defineMacro("__BIG_ENDIAN__");
1138
1139  // Subtarget options.
1140  Builder.defineMacro("__REGISTER_PREFIX__", "");
1141}
1142
1143
1144const char * const MBlazeTargetInfo::GCCRegNames[] = {
1145  "r0",   "r1",   "r2",   "r3",   "r4",   "r5",   "r6",   "r7",
1146  "r8",   "r9",   "r10",  "r11",  "r12",  "r13",  "r14",  "r15",
1147  "r16",  "r17",  "r18",  "r19",  "r20",  "r21",  "r22",  "r23",
1148  "r24",  "r25",  "r26",  "r27",  "r28",  "r29",  "r30",  "r31",
1149  "$f0",  "$f1",  "$f2",  "$f3",  "$f4",  "$f5",  "$f6",  "$f7",
1150  "$f8",  "$f9",  "$f10", "$f11", "$f12", "$f13", "$f14", "$f15",
1151  "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",
1152  "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31",
1153  "hi",   "lo",   "accum","rmsr", "$fcc1","$fcc2","$fcc3","$fcc4",
1154  "$fcc5","$fcc6","$fcc7","$ap",  "$rap", "$frp"
1155};
1156
1157void MBlazeTargetInfo::getGCCRegNames(const char * const *&Names,
1158                                   unsigned &NumNames) const {
1159  Names = GCCRegNames;
1160  NumNames = llvm::array_lengthof(GCCRegNames);
1161}
1162
1163const TargetInfo::GCCRegAlias MBlazeTargetInfo::GCCRegAliases[] = {
1164  { {"f0"},  "r0" },
1165  { {"f1"},  "r1" },
1166  { {"f2"},  "r2" },
1167  { {"f3"},  "r3" },
1168  { {"f4"},  "r4" },
1169  { {"f5"},  "r5" },
1170  { {"f6"},  "r6" },
1171  { {"f7"},  "r7" },
1172  { {"f8"},  "r8" },
1173  { {"f9"},  "r9" },
1174  { {"f10"}, "r10" },
1175  { {"f11"}, "r11" },
1176  { {"f12"}, "r12" },
1177  { {"f13"}, "r13" },
1178  { {"f14"}, "r14" },
1179  { {"f15"}, "r15" },
1180  { {"f16"}, "r16" },
1181  { {"f17"}, "r17" },
1182  { {"f18"}, "r18" },
1183  { {"f19"}, "r19" },
1184  { {"f20"}, "r20" },
1185  { {"f21"}, "r21" },
1186  { {"f22"}, "r22" },
1187  { {"f23"}, "r23" },
1188  { {"f24"}, "r24" },
1189  { {"f25"}, "r25" },
1190  { {"f26"}, "r26" },
1191  { {"f27"}, "r27" },
1192  { {"f28"}, "r28" },
1193  { {"f29"}, "r29" },
1194  { {"f30"}, "r30" },
1195  { {"f31"}, "r31" },
1196};
1197
1198void MBlazeTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
1199                                     unsigned &NumAliases) const {
1200  Aliases = GCCRegAliases;
1201  NumAliases = llvm::array_lengthof(GCCRegAliases);
1202}
1203} // end anonymous namespace.
1204
1205namespace {
1206// Namespace for x86 abstract base class
1207const Builtin::Info BuiltinInfo[] = {
1208#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, ALL_LANGUAGES },
1209#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER,\
1210                                              ALL_LANGUAGES },
1211#include "clang/Basic/BuiltinsX86.def"
1212};
1213
1214static const char* const GCCRegNames[] = {
1215  "ax", "dx", "cx", "bx", "si", "di", "bp", "sp",
1216  "st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)",
1217  "argp", "flags", "fpcr", "fpsr", "dirflag", "frame",
1218  "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
1219  "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7",
1220  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
1221  "xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15",
1222  "ymm0", "ymm1", "ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7",
1223  "ymm8", "ymm9", "ymm10", "ymm11", "ymm12", "ymm13", "ymm14", "ymm15",
1224};
1225
1226const TargetInfo::AddlRegName AddlRegNames[] = {
1227  { { "al", "ah", "eax", "rax" }, 0 },
1228  { { "bl", "bh", "ebx", "rbx" }, 3 },
1229  { { "cl", "ch", "ecx", "rcx" }, 2 },
1230  { { "dl", "dh", "edx", "rdx" }, 1 },
1231  { { "esi", "rsi" }, 4 },
1232  { { "edi", "rdi" }, 5 },
1233  { { "esp", "rsp" }, 7 },
1234  { { "ebp", "rbp" }, 6 },
1235};
1236
1237// X86 target abstract base class; x86-32 and x86-64 are very close, so
1238// most of the implementation can be shared.
1239class X86TargetInfo : public TargetInfo {
1240  enum X86SSEEnum {
1241    NoSSE, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, AVX, AVX2
1242  } SSELevel;
1243  enum MMX3DNowEnum {
1244    NoMMX3DNow, MMX, AMD3DNow, AMD3DNowAthlon
1245  } MMX3DNowLevel;
1246
1247  bool HasAES;
1248  bool HasLZCNT;
1249  bool HasBMI;
1250  bool HasBMI2;
1251  bool HasPOPCNT;
1252  bool HasFMA4;
1253
1254  /// \brief Enumeration of all of the X86 CPUs supported by Clang.
1255  ///
1256  /// Each enumeration represents a particular CPU supported by Clang. These
1257  /// loosely correspond to the options passed to '-march' or '-mtune' flags.
1258  enum CPUKind {
1259    CK_Generic,
1260
1261    /// \name i386
1262    /// i386-generation processors.
1263    //@{
1264    CK_i386,
1265    //@}
1266
1267    /// \name i486
1268    /// i486-generation processors.
1269    //@{
1270    CK_i486,
1271    CK_WinChipC6,
1272    CK_WinChip2,
1273    CK_C3,
1274    //@}
1275
1276    /// \name i586
1277    /// i586-generation processors, P5 microarchitecture based.
1278    //@{
1279    CK_i586,
1280    CK_Pentium,
1281    CK_PentiumMMX,
1282    //@}
1283
1284    /// \name i686
1285    /// i686-generation processors, P6 / Pentium M microarchitecture based.
1286    //@{
1287    CK_i686,
1288    CK_PentiumPro,
1289    CK_Pentium2,
1290    CK_Pentium3,
1291    CK_Pentium3M,
1292    CK_PentiumM,
1293    CK_C3_2,
1294
1295    /// This enumerator is a bit odd, as GCC no longer accepts -march=yonah.
1296    /// Clang however has some logic to suport this.
1297    // FIXME: Warn, deprecate, and potentially remove this.
1298    CK_Yonah,
1299    //@}
1300
1301    /// \name Netburst
1302    /// Netburst microarchitecture based processors.
1303    //@{
1304    CK_Pentium4,
1305    CK_Pentium4M,
1306    CK_Prescott,
1307    CK_Nocona,
1308    //@}
1309
1310    /// \name Core
1311    /// Core microarchitecture based processors.
1312    //@{
1313    CK_Core2,
1314
1315    /// This enumerator, like \see CK_Yonah, is a bit odd. It is another
1316    /// codename which GCC no longer accepts as an option to -march, but Clang
1317    /// has some logic for recognizing it.
1318    // FIXME: Warn, deprecate, and potentially remove this.
1319    CK_Penryn,
1320    //@}
1321
1322    /// \name Atom
1323    /// Atom processors
1324    //@{
1325    CK_Atom,
1326    //@}
1327
1328    /// \name Nehalem
1329    /// Nehalem microarchitecture based processors.
1330    //@{
1331    CK_Corei7,
1332    CK_Corei7AVX,
1333    CK_CoreAVXi,
1334    CK_CoreAVX2,
1335    //@}
1336
1337    /// \name K6
1338    /// K6 architecture processors.
1339    //@{
1340    CK_K6,
1341    CK_K6_2,
1342    CK_K6_3,
1343    //@}
1344
1345    /// \name K7
1346    /// K7 architecture processors.
1347    //@{
1348    CK_Athlon,
1349    CK_AthlonThunderbird,
1350    CK_Athlon4,
1351    CK_AthlonXP,
1352    CK_AthlonMP,
1353    //@}
1354
1355    /// \name K8
1356    /// K8 architecture processors.
1357    //@{
1358    CK_Athlon64,
1359    CK_Athlon64SSE3,
1360    CK_AthlonFX,
1361    CK_K8,
1362    CK_K8SSE3,
1363    CK_Opteron,
1364    CK_OpteronSSE3,
1365    CK_AMDFAM10,
1366    //@}
1367
1368    /// \name Bobcat
1369    /// Bobcat architecture processors.
1370    //@{
1371    CK_BTVER1,
1372    //@}
1373
1374    /// \name Bulldozer
1375    /// Bulldozer architecture processors.
1376    //@{
1377    CK_BDVER1,
1378    CK_BDVER2,
1379    //@}
1380
1381    /// This specification is deprecated and will be removed in the future.
1382    /// Users should prefer \see CK_K8.
1383    // FIXME: Warn on this when the CPU is set to it.
1384    CK_x86_64,
1385    //@}
1386
1387    /// \name Geode
1388    /// Geode processors.
1389    //@{
1390    CK_Geode
1391    //@}
1392  } CPU;
1393
1394public:
1395  X86TargetInfo(const std::string& triple)
1396    : TargetInfo(triple), SSELevel(NoSSE), MMX3DNowLevel(NoMMX3DNow),
1397      HasAES(false), HasLZCNT(false), HasBMI(false), HasBMI2(false),
1398      HasPOPCNT(false), HasFMA4(false), CPU(CK_Generic) {
1399    BigEndian = false;
1400    LongDoubleFormat = &llvm::APFloat::x87DoubleExtended;
1401  }
1402  virtual unsigned getFloatEvalMethod() const {
1403    // X87 evaluates with 80 bits "long double" precision.
1404    return SSELevel == NoSSE ? 2 : 0;
1405  }
1406  virtual void getTargetBuiltins(const Builtin::Info *&Records,
1407                                 unsigned &NumRecords) const {
1408    Records = BuiltinInfo;
1409    NumRecords = clang::X86::LastTSBuiltin-Builtin::FirstTSBuiltin;
1410  }
1411  virtual void getGCCRegNames(const char * const *&Names,
1412                              unsigned &NumNames) const {
1413    Names = GCCRegNames;
1414    NumNames = llvm::array_lengthof(GCCRegNames);
1415  }
1416  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
1417                                unsigned &NumAliases) const {
1418    Aliases = 0;
1419    NumAliases = 0;
1420  }
1421  virtual void getGCCAddlRegNames(const AddlRegName *&Names,
1422				  unsigned &NumNames) const {
1423    Names = AddlRegNames;
1424    NumNames = llvm::array_lengthof(AddlRegNames);
1425  }
1426  virtual bool validateAsmConstraint(const char *&Name,
1427                                     TargetInfo::ConstraintInfo &info) const;
1428  virtual std::string convertConstraint(const char *&Constraint) const;
1429  virtual const char *getClobbers() const {
1430    return "~{dirflag},~{fpsr},~{flags}";
1431  }
1432  virtual void getTargetDefines(const LangOptions &Opts,
1433                                MacroBuilder &Builder) const;
1434  virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
1435                                 StringRef Name,
1436                                 bool Enabled) const;
1437  virtual void getDefaultFeatures(llvm::StringMap<bool> &Features) const;
1438  virtual bool hasFeature(StringRef Feature) const;
1439  virtual void HandleTargetFeatures(std::vector<std::string> &Features);
1440  virtual const char* getABI() const {
1441    if (PointerWidth == 64 && SSELevel >= AVX)
1442      return "avx";
1443    else if (PointerWidth == 32 && MMX3DNowLevel == NoMMX3DNow)
1444      return "no-mmx";
1445    return "";
1446  }
1447  virtual bool setCPU(const std::string &Name) {
1448    CPU = llvm::StringSwitch<CPUKind>(Name)
1449      .Case("i386", CK_i386)
1450      .Case("i486", CK_i486)
1451      .Case("winchip-c6", CK_WinChipC6)
1452      .Case("winchip2", CK_WinChip2)
1453      .Case("c3", CK_C3)
1454      .Case("i586", CK_i586)
1455      .Case("pentium", CK_Pentium)
1456      .Case("pentium-mmx", CK_PentiumMMX)
1457      .Case("i686", CK_i686)
1458      .Case("pentiumpro", CK_PentiumPro)
1459      .Case("pentium2", CK_Pentium2)
1460      .Case("pentium3", CK_Pentium3)
1461      .Case("pentium3m", CK_Pentium3M)
1462      .Case("pentium-m", CK_PentiumM)
1463      .Case("c3-2", CK_C3_2)
1464      .Case("yonah", CK_Yonah)
1465      .Case("pentium4", CK_Pentium4)
1466      .Case("pentium4m", CK_Pentium4M)
1467      .Case("prescott", CK_Prescott)
1468      .Case("nocona", CK_Nocona)
1469      .Case("core2", CK_Core2)
1470      .Case("penryn", CK_Penryn)
1471      .Case("atom", CK_Atom)
1472      .Case("corei7", CK_Corei7)
1473      .Case("corei7-avx", CK_Corei7AVX)
1474      .Case("core-avx-i", CK_CoreAVXi)
1475      .Case("core-avx2", CK_CoreAVX2)
1476      .Case("k6", CK_K6)
1477      .Case("k6-2", CK_K6_2)
1478      .Case("k6-3", CK_K6_3)
1479      .Case("athlon", CK_Athlon)
1480      .Case("athlon-tbird", CK_AthlonThunderbird)
1481      .Case("athlon-4", CK_Athlon4)
1482      .Case("athlon-xp", CK_AthlonXP)
1483      .Case("athlon-mp", CK_AthlonMP)
1484      .Case("athlon64", CK_Athlon64)
1485      .Case("athlon64-sse3", CK_Athlon64SSE3)
1486      .Case("athlon-fx", CK_AthlonFX)
1487      .Case("k8", CK_K8)
1488      .Case("k8-sse3", CK_K8SSE3)
1489      .Case("opteron", CK_Opteron)
1490      .Case("opteron-sse3", CK_OpteronSSE3)
1491      .Case("amdfam10", CK_AMDFAM10)
1492      .Case("btver1", CK_BTVER1)
1493      .Case("bdver1", CK_BDVER1)
1494      .Case("bdver2", CK_BDVER2)
1495      .Case("x86-64", CK_x86_64)
1496      .Case("geode", CK_Geode)
1497      .Default(CK_Generic);
1498
1499    // Perform any per-CPU checks necessary to determine if this CPU is
1500    // acceptable.
1501    // FIXME: This results in terrible diagnostics. Clang just says the CPU is
1502    // invalid without explaining *why*.
1503    switch (CPU) {
1504    case CK_Generic:
1505      // No processor selected!
1506      return false;
1507
1508    case CK_i386:
1509    case CK_i486:
1510    case CK_WinChipC6:
1511    case CK_WinChip2:
1512    case CK_C3:
1513    case CK_i586:
1514    case CK_Pentium:
1515    case CK_PentiumMMX:
1516    case CK_i686:
1517    case CK_PentiumPro:
1518    case CK_Pentium2:
1519    case CK_Pentium3:
1520    case CK_Pentium3M:
1521    case CK_PentiumM:
1522    case CK_Yonah:
1523    case CK_C3_2:
1524    case CK_Pentium4:
1525    case CK_Pentium4M:
1526    case CK_Prescott:
1527    case CK_K6:
1528    case CK_K6_2:
1529    case CK_K6_3:
1530    case CK_Athlon:
1531    case CK_AthlonThunderbird:
1532    case CK_Athlon4:
1533    case CK_AthlonXP:
1534    case CK_AthlonMP:
1535    case CK_Geode:
1536      // Only accept certain architectures when compiling in 32-bit mode.
1537      if (PointerWidth != 32)
1538        return false;
1539
1540      // Fallthrough
1541    case CK_Nocona:
1542    case CK_Core2:
1543    case CK_Penryn:
1544    case CK_Atom:
1545    case CK_Corei7:
1546    case CK_Corei7AVX:
1547    case CK_CoreAVXi:
1548    case CK_CoreAVX2:
1549    case CK_Athlon64:
1550    case CK_Athlon64SSE3:
1551    case CK_AthlonFX:
1552    case CK_K8:
1553    case CK_K8SSE3:
1554    case CK_Opteron:
1555    case CK_OpteronSSE3:
1556    case CK_AMDFAM10:
1557    case CK_BTVER1:
1558    case CK_BDVER1:
1559    case CK_BDVER2:
1560    case CK_x86_64:
1561      return true;
1562    }
1563    llvm_unreachable("Unhandled CPU kind");
1564  }
1565};
1566
1567void X86TargetInfo::getDefaultFeatures(llvm::StringMap<bool> &Features) const {
1568  // FIXME: This should not be here.
1569  Features["3dnow"] = false;
1570  Features["3dnowa"] = false;
1571  Features["mmx"] = false;
1572  Features["sse"] = false;
1573  Features["sse2"] = false;
1574  Features["sse3"] = false;
1575  Features["ssse3"] = false;
1576  Features["sse41"] = false;
1577  Features["sse42"] = false;
1578  Features["sse4a"] = false;
1579  Features["aes"] = false;
1580  Features["avx"] = false;
1581  Features["avx2"] = false;
1582  Features["lzcnt"] = false;
1583  Features["bmi"] = false;
1584  Features["bmi2"] = false;
1585  Features["popcnt"] = false;
1586  Features["fma4"] = false;
1587
1588  // FIXME: This *really* should not be here.
1589
1590  // X86_64 always has SSE2.
1591  if (PointerWidth == 64)
1592    Features["sse2"] = Features["sse"] = Features["mmx"] = true;
1593
1594  switch (CPU) {
1595  case CK_Generic:
1596  case CK_i386:
1597  case CK_i486:
1598  case CK_i586:
1599  case CK_Pentium:
1600  case CK_i686:
1601  case CK_PentiumPro:
1602    break;
1603  case CK_PentiumMMX:
1604  case CK_Pentium2:
1605    setFeatureEnabled(Features, "mmx", true);
1606    break;
1607  case CK_Pentium3:
1608  case CK_Pentium3M:
1609    setFeatureEnabled(Features, "mmx", true);
1610    setFeatureEnabled(Features, "sse", true);
1611    break;
1612  case CK_PentiumM:
1613  case CK_Pentium4:
1614  case CK_Pentium4M:
1615  case CK_x86_64:
1616    setFeatureEnabled(Features, "mmx", true);
1617    setFeatureEnabled(Features, "sse2", true);
1618    break;
1619  case CK_Yonah:
1620  case CK_Prescott:
1621  case CK_Nocona:
1622    setFeatureEnabled(Features, "mmx", true);
1623    setFeatureEnabled(Features, "sse3", true);
1624    break;
1625  case CK_Core2:
1626    setFeatureEnabled(Features, "mmx", true);
1627    setFeatureEnabled(Features, "ssse3", true);
1628    break;
1629  case CK_Penryn:
1630    setFeatureEnabled(Features, "mmx", true);
1631    setFeatureEnabled(Features, "sse4.1", true);
1632    break;
1633  case CK_Atom:
1634    setFeatureEnabled(Features, "mmx", true);
1635    setFeatureEnabled(Features, "ssse3", true);
1636    break;
1637  case CK_Corei7:
1638    setFeatureEnabled(Features, "mmx", true);
1639    setFeatureEnabled(Features, "sse4", true);
1640    setFeatureEnabled(Features, "aes", true);
1641    break;
1642  case CK_Corei7AVX:
1643  case CK_CoreAVXi:
1644    setFeatureEnabled(Features, "mmx", true);
1645    setFeatureEnabled(Features, "sse4", true);
1646    setFeatureEnabled(Features, "aes", true);
1647    //setFeatureEnabled(Features, "avx", true);
1648    break;
1649  case CK_CoreAVX2:
1650    setFeatureEnabled(Features, "mmx", true);
1651    setFeatureEnabled(Features, "sse4", true);
1652    setFeatureEnabled(Features, "aes", true);
1653    setFeatureEnabled(Features, "lzcnt", true);
1654    setFeatureEnabled(Features, "bmi", true);
1655    setFeatureEnabled(Features, "bmi2", true);
1656    //setFeatureEnabled(Features, "avx2", true);
1657    break;
1658  case CK_K6:
1659  case CK_WinChipC6:
1660    setFeatureEnabled(Features, "mmx", true);
1661    break;
1662  case CK_K6_2:
1663  case CK_K6_3:
1664  case CK_WinChip2:
1665  case CK_C3:
1666    setFeatureEnabled(Features, "3dnow", true);
1667    break;
1668  case CK_Athlon:
1669  case CK_AthlonThunderbird:
1670  case CK_Geode:
1671    setFeatureEnabled(Features, "3dnowa", true);
1672    break;
1673  case CK_Athlon4:
1674  case CK_AthlonXP:
1675  case CK_AthlonMP:
1676    setFeatureEnabled(Features, "sse", true);
1677    setFeatureEnabled(Features, "3dnowa", true);
1678    break;
1679  case CK_K8:
1680  case CK_Opteron:
1681  case CK_Athlon64:
1682  case CK_AthlonFX:
1683    setFeatureEnabled(Features, "sse2", true);
1684    setFeatureEnabled(Features, "3dnowa", true);
1685    break;
1686  case CK_K8SSE3:
1687  case CK_OpteronSSE3:
1688  case CK_Athlon64SSE3:
1689    setFeatureEnabled(Features, "sse3", true);
1690    setFeatureEnabled(Features, "3dnowa", true);
1691    break;
1692  case CK_AMDFAM10:
1693    setFeatureEnabled(Features, "sse3", true);
1694    setFeatureEnabled(Features, "sse4a", true);
1695    setFeatureEnabled(Features, "3dnowa", true);
1696    break;
1697  case CK_BTVER1:
1698    setFeatureEnabled(Features, "ssse3", true);
1699    setFeatureEnabled(Features, "sse4a", true);
1700  case CK_BDVER1:
1701  case CK_BDVER2:
1702    setFeatureEnabled(Features, "sse4", true);
1703    setFeatureEnabled(Features, "sse4a", true);
1704    setFeatureEnabled(Features, "aes", true);
1705    break;
1706  case CK_C3_2:
1707    setFeatureEnabled(Features, "mmx", true);
1708    setFeatureEnabled(Features, "sse", true);
1709    break;
1710  }
1711}
1712
1713bool X86TargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
1714                                      StringRef Name,
1715                                      bool Enabled) const {
1716  // FIXME: This *really* should not be here.  We need some way of translating
1717  // options into llvm subtarget features.
1718  if (!Features.count(Name) &&
1719      (Name != "sse4" && Name != "sse4.2" && Name != "sse4.1"))
1720    return false;
1721
1722  // FIXME: this should probably use a switch with fall through.
1723
1724  if (Enabled) {
1725    if (Name == "mmx")
1726      Features["mmx"] = true;
1727    else if (Name == "sse")
1728      Features["mmx"] = Features["sse"] = true;
1729    else if (Name == "sse2")
1730      Features["mmx"] = Features["sse"] = Features["sse2"] = true;
1731    else if (Name == "sse3")
1732      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1733        true;
1734    else if (Name == "ssse3")
1735      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1736        Features["ssse3"] = true;
1737    else if (Name == "sse4" || Name == "sse4.2")
1738      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1739        Features["ssse3"] = Features["sse41"] = Features["sse42"] =
1740        Features["popcnt"] = true;
1741    else if (Name == "sse4.1")
1742      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1743        Features["ssse3"] = Features["sse41"] = true;
1744    else if (Name == "3dnow")
1745      Features["mmx"] = Features["3dnow"] = true;
1746    else if (Name == "3dnowa")
1747      Features["mmx"] = Features["3dnow"] = Features["3dnowa"] = true;
1748    else if (Name == "aes")
1749      Features["aes"] = true;
1750    else if (Name == "avx")
1751      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1752        Features["ssse3"] = Features["sse41"] = Features["sse42"] =
1753        Features["popcnt"] = Features["avx"] = true;
1754    else if (Name == "avx2")
1755      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1756        Features["ssse3"] = Features["sse41"] = Features["sse42"] =
1757        Features["popcnt"] = Features["avx"] = Features["avx2"] = true;
1758    else if (Name == "fma4")
1759        Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1760        Features["ssse3"] = Features["sse41"] = Features["sse42"] =
1761        Features["popcnt"] = Features["avx"] = Features["fma4"] = true;
1762    else if (Name == "sse4a")
1763      Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
1764        Features["lzcnt"] = Features["popcnt"] = Features["sse4a"] = true;
1765    else if (Name == "lzcnt")
1766      Features["lzcnt"] = true;
1767    else if (Name == "bmi")
1768      Features["bmi"] = true;
1769    else if (Name == "bmi2")
1770      Features["bmi2"] = true;
1771    else if (Name == "popcnt")
1772      Features["popcnt"] = true;
1773  } else {
1774    if (Name == "mmx")
1775      Features["mmx"] = Features["3dnow"] = Features["3dnowa"] = false;
1776    else if (Name == "sse")
1777      Features["sse"] = Features["sse2"] = Features["sse3"] =
1778        Features["ssse3"] = Features["sse41"] = Features["sse42"] =
1779        Features["sse4a"] = false;
1780    else if (Name == "sse2")
1781      Features["sse2"] = Features["sse3"] = Features["ssse3"] =
1782        Features["sse41"] = Features["sse42"] = Features["sse4a"] = false;
1783    else if (Name == "sse3")
1784      Features["sse3"] = Features["ssse3"] = Features["sse41"] =
1785        Features["sse42"] = Features["sse4a"] = false;
1786    else if (Name == "ssse3")
1787      Features["ssse3"] = Features["sse41"] = Features["sse42"] = false;
1788    else if (Name == "sse4" || Name == "sse4.1")
1789      Features["sse41"] = Features["sse42"] = false;
1790    else if (Name == "sse4.2")
1791      Features["sse42"] = false;
1792    else if (Name == "3dnow")
1793      Features["3dnow"] = Features["3dnowa"] = false;
1794    else if (Name == "3dnowa")
1795      Features["3dnowa"] = false;
1796    else if (Name == "aes")
1797      Features["aes"] = false;
1798    else if (Name == "avx")
1799      Features["avx"] = Features["avx2"] = Features["fma4"] = false;
1800    else if (Name == "avx2")
1801      Features["avx2"] = false;
1802    else if (Name == "sse4a")
1803      Features["sse4a"] = false;
1804    else if (Name == "lzcnt")
1805      Features["lzcnt"] = false;
1806    else if (Name == "bmi")
1807      Features["bmi"] = false;
1808    else if (Name == "bmi2")
1809      Features["bmi2"] = false;
1810    else if (Name == "popcnt")
1811      Features["popcnt"] = false;
1812    else if (Name == "fma4")
1813      Features["fma4"] = false;
1814  }
1815
1816  return true;
1817}
1818
1819/// HandleTargetOptions - Perform initialization based on the user
1820/// configured set of features.
1821void X86TargetInfo::HandleTargetFeatures(std::vector<std::string> &Features) {
1822  // Remember the maximum enabled sselevel.
1823  for (unsigned i = 0, e = Features.size(); i !=e; ++i) {
1824    // Ignore disabled features.
1825    if (Features[i][0] == '-')
1826      continue;
1827
1828    StringRef Feature = StringRef(Features[i]).substr(1);
1829
1830    if (Feature == "aes") {
1831      HasAES = true;
1832      continue;
1833    }
1834
1835    if (Feature == "lzcnt") {
1836      HasLZCNT = true;
1837      continue;
1838    }
1839
1840    if (Feature == "bmi") {
1841      HasBMI = true;
1842      continue;
1843    }
1844
1845    if (Feature == "bmi2") {
1846      HasBMI2 = true;
1847      continue;
1848    }
1849
1850    if (Feature == "popcnt") {
1851      HasPOPCNT = true;
1852      continue;
1853    }
1854
1855    if (Feature == "fma4") {
1856      HasFMA4 = true;
1857      continue;
1858    }
1859
1860    assert(Features[i][0] == '+' && "Invalid target feature!");
1861    X86SSEEnum Level = llvm::StringSwitch<X86SSEEnum>(Feature)
1862      .Case("avx2", AVX2)
1863      .Case("avx", AVX)
1864      .Case("sse42", SSE42)
1865      .Case("sse41", SSE41)
1866      .Case("ssse3", SSSE3)
1867      .Case("sse3", SSE3)
1868      .Case("sse2", SSE2)
1869      .Case("sse", SSE1)
1870      .Default(NoSSE);
1871    SSELevel = std::max(SSELevel, Level);
1872
1873    MMX3DNowEnum ThreeDNowLevel =
1874      llvm::StringSwitch<MMX3DNowEnum>(Feature)
1875        .Case("3dnowa", AMD3DNowAthlon)
1876        .Case("3dnow", AMD3DNow)
1877        .Case("mmx", MMX)
1878        .Default(NoMMX3DNow);
1879
1880    MMX3DNowLevel = std::max(MMX3DNowLevel, ThreeDNowLevel);
1881  }
1882
1883  // Don't tell the backend if we're turning off mmx; it will end up disabling
1884  // SSE, which we don't want.
1885  std::vector<std::string>::iterator it;
1886  it = std::find(Features.begin(), Features.end(), "-mmx");
1887  if (it != Features.end())
1888    Features.erase(it);
1889}
1890
1891/// X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro
1892/// definitions for this particular subtarget.
1893void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
1894                                     MacroBuilder &Builder) const {
1895  // Target identification.
1896  if (PointerWidth == 64) {
1897    if (getLongWidth() == 64) {
1898      Builder.defineMacro("_LP64");
1899      Builder.defineMacro("__LP64__");
1900    }
1901    Builder.defineMacro("__amd64__");
1902    Builder.defineMacro("__amd64");
1903    Builder.defineMacro("__x86_64");
1904    Builder.defineMacro("__x86_64__");
1905  } else {
1906    DefineStd(Builder, "i386", Opts);
1907  }
1908
1909  // Subtarget options.
1910  // FIXME: We are hard-coding the tune parameters based on the CPU, but they
1911  // truly should be based on -mtune options.
1912  switch (CPU) {
1913  case CK_Generic:
1914    break;
1915  case CK_i386:
1916    // The rest are coming from the i386 define above.
1917    Builder.defineMacro("__tune_i386__");
1918    break;
1919  case CK_i486:
1920  case CK_WinChipC6:
1921  case CK_WinChip2:
1922  case CK_C3:
1923    defineCPUMacros(Builder, "i486");
1924    break;
1925  case CK_PentiumMMX:
1926    Builder.defineMacro("__pentium_mmx__");
1927    Builder.defineMacro("__tune_pentium_mmx__");
1928    // Fallthrough
1929  case CK_i586:
1930  case CK_Pentium:
1931    defineCPUMacros(Builder, "i586");
1932    defineCPUMacros(Builder, "pentium");
1933    break;
1934  case CK_Pentium3:
1935  case CK_Pentium3M:
1936  case CK_PentiumM:
1937    Builder.defineMacro("__tune_pentium3__");
1938    // Fallthrough
1939  case CK_Pentium2:
1940  case CK_C3_2:
1941    Builder.defineMacro("__tune_pentium2__");
1942    // Fallthrough
1943  case CK_PentiumPro:
1944    Builder.defineMacro("__tune_i686__");
1945    Builder.defineMacro("__tune_pentiumpro__");
1946    // Fallthrough
1947  case CK_i686:
1948    Builder.defineMacro("__i686");
1949    Builder.defineMacro("__i686__");
1950    // Strangely, __tune_i686__ isn't defined by GCC when CPU == i686.
1951    Builder.defineMacro("__pentiumpro");
1952    Builder.defineMacro("__pentiumpro__");
1953    break;
1954  case CK_Pentium4:
1955  case CK_Pentium4M:
1956    defineCPUMacros(Builder, "pentium4");
1957    break;
1958  case CK_Yonah:
1959  case CK_Prescott:
1960  case CK_Nocona:
1961    defineCPUMacros(Builder, "nocona");
1962    break;
1963  case CK_Core2:
1964  case CK_Penryn:
1965    defineCPUMacros(Builder, "core2");
1966    break;
1967  case CK_Atom:
1968    defineCPUMacros(Builder, "atom");
1969    break;
1970  case CK_Corei7:
1971  case CK_Corei7AVX:
1972  case CK_CoreAVXi:
1973  case CK_CoreAVX2:
1974    defineCPUMacros(Builder, "corei7");
1975    break;
1976  case CK_K6_2:
1977    Builder.defineMacro("__k6_2__");
1978    Builder.defineMacro("__tune_k6_2__");
1979    // Fallthrough
1980  case CK_K6_3:
1981    if (CPU != CK_K6_2) {  // In case of fallthrough
1982      // FIXME: GCC may be enabling these in cases where some other k6
1983      // architecture is specified but -m3dnow is explicitly provided. The
1984      // exact semantics need to be determined and emulated here.
1985      Builder.defineMacro("__k6_3__");
1986      Builder.defineMacro("__tune_k6_3__");
1987    }
1988    // Fallthrough
1989  case CK_K6:
1990    defineCPUMacros(Builder, "k6");
1991    break;
1992  case CK_Athlon:
1993  case CK_AthlonThunderbird:
1994  case CK_Athlon4:
1995  case CK_AthlonXP:
1996  case CK_AthlonMP:
1997    defineCPUMacros(Builder, "athlon");
1998    if (SSELevel != NoSSE) {
1999      Builder.defineMacro("__athlon_sse__");
2000      Builder.defineMacro("__tune_athlon_sse__");
2001    }
2002    break;
2003  case CK_K8:
2004  case CK_K8SSE3:
2005  case CK_x86_64:
2006  case CK_Opteron:
2007  case CK_OpteronSSE3:
2008  case CK_Athlon64:
2009  case CK_Athlon64SSE3:
2010  case CK_AthlonFX:
2011    defineCPUMacros(Builder, "k8");
2012    break;
2013  case CK_AMDFAM10:
2014    defineCPUMacros(Builder, "amdfam10");
2015    break;
2016  case CK_BTVER1:
2017    defineCPUMacros(Builder, "btver1");
2018    break;
2019  case CK_BDVER1:
2020    defineCPUMacros(Builder, "bdver1");
2021    break;
2022  case CK_BDVER2:
2023    defineCPUMacros(Builder, "bdver2");
2024    break;
2025  case CK_Geode:
2026    defineCPUMacros(Builder, "geode");
2027    break;
2028  }
2029
2030  // Target properties.
2031  Builder.defineMacro("__LITTLE_ENDIAN__");
2032  Builder.defineMacro("__REGISTER_PREFIX__", "");
2033
2034  // Define __NO_MATH_INLINES on linux/x86 so that we don't get inline
2035  // functions in glibc header files that use FP Stack inline asm which the
2036  // backend can't deal with (PR879).
2037  Builder.defineMacro("__NO_MATH_INLINES");
2038
2039  if (HasAES)
2040    Builder.defineMacro("__AES__");
2041
2042  if (HasLZCNT)
2043    Builder.defineMacro("__LZCNT__");
2044
2045  if (HasBMI)
2046    Builder.defineMacro("__BMI__");
2047
2048  if (HasBMI2)
2049    Builder.defineMacro("__BMI2__");
2050
2051  if (HasPOPCNT)
2052    Builder.defineMacro("__POPCNT__");
2053
2054  if (HasFMA4)
2055    Builder.defineMacro("__FMA4__");
2056
2057  // Each case falls through to the previous one here.
2058  switch (SSELevel) {
2059  case AVX2:
2060    Builder.defineMacro("__AVX2__");
2061  case AVX:
2062    Builder.defineMacro("__AVX__");
2063  case SSE42:
2064    Builder.defineMacro("__SSE4_2__");
2065  case SSE41:
2066    Builder.defineMacro("__SSE4_1__");
2067  case SSSE3:
2068    Builder.defineMacro("__SSSE3__");
2069  case SSE3:
2070    Builder.defineMacro("__SSE3__");
2071  case SSE2:
2072    Builder.defineMacro("__SSE2__");
2073    Builder.defineMacro("__SSE2_MATH__");  // -mfp-math=sse always implied.
2074  case SSE1:
2075    Builder.defineMacro("__SSE__");
2076    Builder.defineMacro("__SSE_MATH__");   // -mfp-math=sse always implied.
2077  case NoSSE:
2078    break;
2079  }
2080
2081  if (Opts.MicrosoftExt && PointerWidth == 32) {
2082    switch (SSELevel) {
2083    case AVX2:
2084    case AVX:
2085    case SSE42:
2086    case SSE41:
2087    case SSSE3:
2088    case SSE3:
2089    case SSE2:
2090      Builder.defineMacro("_M_IX86_FP", Twine(2));
2091      break;
2092    case SSE1:
2093      Builder.defineMacro("_M_IX86_FP", Twine(1));
2094      break;
2095    default:
2096      Builder.defineMacro("_M_IX86_FP", Twine(0));
2097    }
2098  }
2099
2100  // Each case falls through to the previous one here.
2101  switch (MMX3DNowLevel) {
2102  case AMD3DNowAthlon:
2103    Builder.defineMacro("__3dNOW_A__");
2104  case AMD3DNow:
2105    Builder.defineMacro("__3dNOW__");
2106  case MMX:
2107    Builder.defineMacro("__MMX__");
2108  case NoMMX3DNow:
2109    break;
2110  }
2111}
2112
2113bool X86TargetInfo::hasFeature(StringRef Feature) const {
2114  return llvm::StringSwitch<bool>(Feature)
2115      .Case("aes", HasAES)
2116      .Case("avx", SSELevel >= AVX)
2117      .Case("avx2", SSELevel >= AVX2)
2118      .Case("bmi", HasBMI)
2119      .Case("bmi2", HasBMI2)
2120      .Case("fma4", HasFMA4)
2121      .Case("lzcnt", HasLZCNT)
2122      .Case("mm3dnow", MMX3DNowLevel >= AMD3DNow)
2123      .Case("mm3dnowa", MMX3DNowLevel >= AMD3DNowAthlon)
2124      .Case("mmx", MMX3DNowLevel >= MMX)
2125      .Case("popcnt", HasPOPCNT)
2126      .Case("sse", SSELevel >= SSE1)
2127      .Case("sse2", SSELevel >= SSE2)
2128      .Case("sse3", SSELevel >= SSE3)
2129      .Case("ssse3", SSELevel >= SSSE3)
2130      .Case("sse41", SSELevel >= SSE41)
2131      .Case("sse42", SSELevel >= SSE42)
2132      .Case("x86", true)
2133      .Case("x86_32", PointerWidth == 32)
2134      .Case("x86_64", PointerWidth == 64)
2135      .Default(false);
2136}
2137
2138bool
2139X86TargetInfo::validateAsmConstraint(const char *&Name,
2140                                     TargetInfo::ConstraintInfo &Info) const {
2141  switch (*Name) {
2142  default: return false;
2143  case 'Y': // first letter of a pair:
2144    switch (*(Name+1)) {
2145    default: return false;
2146    case '0':  // First SSE register.
2147    case 't':  // Any SSE register, when SSE2 is enabled.
2148    case 'i':  // Any SSE register, when SSE2 and inter-unit moves enabled.
2149    case 'm':  // any MMX register, when inter-unit moves enabled.
2150      break;   // falls through to setAllowsRegister.
2151  }
2152  case 'a': // eax.
2153  case 'b': // ebx.
2154  case 'c': // ecx.
2155  case 'd': // edx.
2156  case 'S': // esi.
2157  case 'D': // edi.
2158  case 'A': // edx:eax.
2159  case 'f': // any x87 floating point stack register.
2160  case 't': // top of floating point stack.
2161  case 'u': // second from top of floating point stack.
2162  case 'q': // Any register accessible as [r]l: a, b, c, and d.
2163  case 'y': // Any MMX register.
2164  case 'x': // Any SSE register.
2165  case 'Q': // Any register accessible as [r]h: a, b, c, and d.
2166  case 'R': // "Legacy" registers: ax, bx, cx, dx, di, si, sp, bp.
2167  case 'l': // "Index" registers: any general register that can be used as an
2168            // index in a base+index memory access.
2169    Info.setAllowsRegister();
2170    return true;
2171  case 'C': // SSE floating point constant.
2172  case 'G': // x87 floating point constant.
2173  case 'e': // 32-bit signed integer constant for use with zero-extending
2174            // x86_64 instructions.
2175  case 'Z': // 32-bit unsigned integer constant for use with zero-extending
2176            // x86_64 instructions.
2177    return true;
2178  }
2179}
2180
2181
2182std::string
2183X86TargetInfo::convertConstraint(const char *&Constraint) const {
2184  switch (*Constraint) {
2185  case 'a': return std::string("{ax}");
2186  case 'b': return std::string("{bx}");
2187  case 'c': return std::string("{cx}");
2188  case 'd': return std::string("{dx}");
2189  case 'S': return std::string("{si}");
2190  case 'D': return std::string("{di}");
2191  case 'p': // address
2192    return std::string("im");
2193  case 't': // top of floating point stack.
2194    return std::string("{st}");
2195  case 'u': // second from top of floating point stack.
2196    return std::string("{st(1)}"); // second from top of floating point stack.
2197  default:
2198    return std::string(1, *Constraint);
2199  }
2200}
2201} // end anonymous namespace
2202
2203namespace {
2204// X86-32 generic target
2205class X86_32TargetInfo : public X86TargetInfo {
2206public:
2207  X86_32TargetInfo(const std::string& triple) : X86TargetInfo(triple) {
2208    DoubleAlign = LongLongAlign = 32;
2209    LongDoubleWidth = 96;
2210    LongDoubleAlign = 32;
2211    SuitableAlign = 128;
2212    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2213                        "i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-"
2214                        "a0:0:64-f80:32:32-n8:16:32-S128";
2215    SizeType = UnsignedInt;
2216    PtrDiffType = SignedInt;
2217    IntPtrType = SignedInt;
2218    RegParmMax = 3;
2219
2220    // Use fpret for all types.
2221    RealTypeUsesObjCFPRet = ((1 << TargetInfo::Float) |
2222                             (1 << TargetInfo::Double) |
2223                             (1 << TargetInfo::LongDouble));
2224
2225    // x86-32 has atomics up to 8 bytes
2226    // FIXME: Check that we actually have cmpxchg8b before setting
2227    // MaxAtomicInlineWidth. (cmpxchg8b is an i586 instruction.)
2228    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
2229  }
2230  virtual const char *getVAListDeclaration() const {
2231    return "typedef char* __builtin_va_list;";
2232  }
2233
2234  int getEHDataRegisterNumber(unsigned RegNo) const {
2235    if (RegNo == 0) return 0;
2236    if (RegNo == 1) return 2;
2237    return -1;
2238  }
2239};
2240} // end anonymous namespace
2241
2242namespace {
2243class NetBSDI386TargetInfo : public NetBSDTargetInfo<X86_32TargetInfo> {
2244public:
2245  NetBSDI386TargetInfo(const std::string &triple) :
2246    NetBSDTargetInfo<X86_32TargetInfo>(triple) {
2247  }
2248
2249  virtual unsigned getFloatEvalMethod() const {
2250    // NetBSD defaults to "double" rounding
2251    return 1;
2252  }
2253};
2254} // end anonymous namespace
2255
2256namespace {
2257class OpenBSDI386TargetInfo : public OpenBSDTargetInfo<X86_32TargetInfo> {
2258public:
2259  OpenBSDI386TargetInfo(const std::string& triple) :
2260    OpenBSDTargetInfo<X86_32TargetInfo>(triple) {
2261    SizeType = UnsignedLong;
2262    IntPtrType = SignedLong;
2263    PtrDiffType = SignedLong;
2264  }
2265};
2266} // end anonymous namespace
2267
2268namespace {
2269class DarwinI386TargetInfo : public DarwinTargetInfo<X86_32TargetInfo> {
2270public:
2271  DarwinI386TargetInfo(const std::string& triple) :
2272    DarwinTargetInfo<X86_32TargetInfo>(triple) {
2273    LongDoubleWidth = 128;
2274    LongDoubleAlign = 128;
2275    SuitableAlign = 128;
2276    SizeType = UnsignedLong;
2277    IntPtrType = SignedLong;
2278    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2279                        "i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-"
2280                        "a0:0:64-f80:128:128-n8:16:32-S128";
2281    HasAlignMac68kSupport = true;
2282  }
2283
2284};
2285} // end anonymous namespace
2286
2287namespace {
2288// x86-32 Windows target
2289class WindowsX86_32TargetInfo : public WindowsTargetInfo<X86_32TargetInfo> {
2290public:
2291  WindowsX86_32TargetInfo(const std::string& triple)
2292    : WindowsTargetInfo<X86_32TargetInfo>(triple) {
2293    TLSSupported = false;
2294    WCharType = UnsignedShort;
2295    DoubleAlign = LongLongAlign = 64;
2296    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2297                        "i64:64:64-f32:32:32-f64:64:64-f80:128:128-v64:64:64-"
2298                        "v128:128:128-a0:0:64-f80:32:32-n8:16:32-S32";
2299  }
2300  virtual void getTargetDefines(const LangOptions &Opts,
2301                                MacroBuilder &Builder) const {
2302    WindowsTargetInfo<X86_32TargetInfo>::getTargetDefines(Opts, Builder);
2303  }
2304};
2305} // end anonymous namespace
2306
2307namespace {
2308
2309// x86-32 Windows Visual Studio target
2310class VisualStudioWindowsX86_32TargetInfo : public WindowsX86_32TargetInfo {
2311public:
2312  VisualStudioWindowsX86_32TargetInfo(const std::string& triple)
2313    : WindowsX86_32TargetInfo(triple) {
2314    LongDoubleWidth = LongDoubleAlign = 64;
2315    LongDoubleFormat = &llvm::APFloat::IEEEdouble;
2316  }
2317  virtual void getTargetDefines(const LangOptions &Opts,
2318                                MacroBuilder &Builder) const {
2319    WindowsX86_32TargetInfo::getTargetDefines(Opts, Builder);
2320    WindowsX86_32TargetInfo::getVisualStudioDefines(Opts, Builder);
2321    // The value of the following reflects processor type.
2322    // 300=386, 400=486, 500=Pentium, 600=Blend (default)
2323    // We lost the original triple, so we use the default.
2324    Builder.defineMacro("_M_IX86", "600");
2325  }
2326};
2327} // end anonymous namespace
2328
2329namespace {
2330// x86-32 MinGW target
2331class MinGWX86_32TargetInfo : public WindowsX86_32TargetInfo {
2332public:
2333  MinGWX86_32TargetInfo(const std::string& triple)
2334    : WindowsX86_32TargetInfo(triple) {
2335  }
2336  virtual void getTargetDefines(const LangOptions &Opts,
2337                                MacroBuilder &Builder) const {
2338    WindowsX86_32TargetInfo::getTargetDefines(Opts, Builder);
2339    DefineStd(Builder, "WIN32", Opts);
2340    DefineStd(Builder, "WINNT", Opts);
2341    Builder.defineMacro("_X86_");
2342    Builder.defineMacro("__MSVCRT__");
2343    Builder.defineMacro("__MINGW32__");
2344
2345    // mingw32-gcc provides __declspec(a) as alias of __attribute__((a)).
2346    // In contrast, clang-cc1 provides __declspec(a) with -fms-extensions.
2347    if (Opts.MicrosoftExt)
2348      // Provide "as-is" __declspec.
2349      Builder.defineMacro("__declspec", "__declspec");
2350    else
2351      // Provide alias of __attribute__ like mingw32-gcc.
2352      Builder.defineMacro("__declspec(a)", "__attribute__((a))");
2353  }
2354};
2355} // end anonymous namespace
2356
2357namespace {
2358// x86-32 Cygwin target
2359class CygwinX86_32TargetInfo : public X86_32TargetInfo {
2360public:
2361  CygwinX86_32TargetInfo(const std::string& triple)
2362    : X86_32TargetInfo(triple) {
2363    TLSSupported = false;
2364    WCharType = UnsignedShort;
2365    DoubleAlign = LongLongAlign = 64;
2366    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2367                        "i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-"
2368                        "a0:0:64-f80:32:32-n8:16:32-S32";
2369  }
2370  virtual void getTargetDefines(const LangOptions &Opts,
2371                                MacroBuilder &Builder) const {
2372    X86_32TargetInfo::getTargetDefines(Opts, Builder);
2373    Builder.defineMacro("__CYGWIN__");
2374    Builder.defineMacro("__CYGWIN32__");
2375    DefineStd(Builder, "unix", Opts);
2376    if (Opts.CPlusPlus)
2377      Builder.defineMacro("_GNU_SOURCE");
2378  }
2379};
2380} // end anonymous namespace
2381
2382namespace {
2383// x86-32 Haiku target
2384class HaikuX86_32TargetInfo : public X86_32TargetInfo {
2385public:
2386  HaikuX86_32TargetInfo(const std::string& triple)
2387    : X86_32TargetInfo(triple) {
2388    SizeType = UnsignedLong;
2389    IntPtrType = SignedLong;
2390    PtrDiffType = SignedLong;
2391    this->UserLabelPrefix = "";
2392  }
2393  virtual void getTargetDefines(const LangOptions &Opts,
2394                                MacroBuilder &Builder) const {
2395    X86_32TargetInfo::getTargetDefines(Opts, Builder);
2396    Builder.defineMacro("__INTEL__");
2397    Builder.defineMacro("__HAIKU__");
2398  }
2399};
2400} // end anonymous namespace
2401
2402// RTEMS Target
2403template<typename Target>
2404class RTEMSTargetInfo : public OSTargetInfo<Target> {
2405protected:
2406  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
2407                            MacroBuilder &Builder) const {
2408    // RTEMS defines; list based off of gcc output
2409
2410    Builder.defineMacro("__rtems__");
2411    Builder.defineMacro("__ELF__");
2412  }
2413public:
2414  RTEMSTargetInfo(const std::string &triple)
2415    : OSTargetInfo<Target>(triple) {
2416      this->UserLabelPrefix = "";
2417
2418      llvm::Triple Triple(triple);
2419      switch (Triple.getArch()) {
2420        default:
2421        case llvm::Triple::x86:
2422          // this->MCountName = ".mcount";
2423          break;
2424        case llvm::Triple::mips:
2425        case llvm::Triple::mipsel:
2426        case llvm::Triple::ppc:
2427        case llvm::Triple::ppc64:
2428          // this->MCountName = "_mcount";
2429          break;
2430        case llvm::Triple::arm:
2431          // this->MCountName = "__mcount";
2432          break;
2433      }
2434
2435    }
2436};
2437
2438namespace {
2439// x86-32 RTEMS target
2440class RTEMSX86_32TargetInfo : public X86_32TargetInfo {
2441public:
2442  RTEMSX86_32TargetInfo(const std::string& triple)
2443    : X86_32TargetInfo(triple) {
2444    SizeType = UnsignedLong;
2445    IntPtrType = SignedLong;
2446    PtrDiffType = SignedLong;
2447    this->UserLabelPrefix = "";
2448  }
2449  virtual void getTargetDefines(const LangOptions &Opts,
2450                                MacroBuilder &Builder) const {
2451    X86_32TargetInfo::getTargetDefines(Opts, Builder);
2452    Builder.defineMacro("__INTEL__");
2453    Builder.defineMacro("__rtems__");
2454  }
2455};
2456} // end anonymous namespace
2457
2458namespace {
2459// x86-64 generic target
2460class X86_64TargetInfo : public X86TargetInfo {
2461public:
2462  X86_64TargetInfo(const std::string &triple) : X86TargetInfo(triple) {
2463    LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
2464    LongDoubleWidth = 128;
2465    LongDoubleAlign = 128;
2466    LargeArrayMinWidth = 128;
2467    LargeArrayAlign = 128;
2468    SuitableAlign = 128;
2469    IntMaxType = SignedLong;
2470    UIntMaxType = UnsignedLong;
2471    Int64Type = SignedLong;
2472    RegParmMax = 6;
2473
2474    DescriptionString = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2475                        "i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-"
2476                        "a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128";
2477
2478    // Use fpret only for long double.
2479    RealTypeUsesObjCFPRet = (1 << TargetInfo::LongDouble);
2480
2481    // Use fp2ret for _Complex long double.
2482    ComplexLongDoubleUsesFP2Ret = true;
2483
2484    // x86-64 has atomics up to 16 bytes.
2485    // FIXME: Once the backend is fixed, increase MaxAtomicInlineWidth to 128
2486    // on CPUs with cmpxchg16b
2487    MaxAtomicPromoteWidth = 128;
2488    MaxAtomicInlineWidth = 64;
2489  }
2490  virtual const char *getVAListDeclaration() const {
2491    return "typedef struct __va_list_tag {"
2492           "  unsigned gp_offset;"
2493           "  unsigned fp_offset;"
2494           "  void* overflow_arg_area;"
2495           "  void* reg_save_area;"
2496           "} __va_list_tag;"
2497           "typedef __va_list_tag __builtin_va_list[1];";
2498  }
2499
2500  int getEHDataRegisterNumber(unsigned RegNo) const {
2501    if (RegNo == 0) return 0;
2502    if (RegNo == 1) return 1;
2503    return -1;
2504  }
2505};
2506} // end anonymous namespace
2507
2508namespace {
2509// x86-64 Windows target
2510class WindowsX86_64TargetInfo : public WindowsTargetInfo<X86_64TargetInfo> {
2511public:
2512  WindowsX86_64TargetInfo(const std::string& triple)
2513    : WindowsTargetInfo<X86_64TargetInfo>(triple) {
2514    TLSSupported = false;
2515    WCharType = UnsignedShort;
2516    LongWidth = LongAlign = 32;
2517    DoubleAlign = LongLongAlign = 64;
2518    IntMaxType = SignedLongLong;
2519    UIntMaxType = UnsignedLongLong;
2520    Int64Type = SignedLongLong;
2521    SizeType = UnsignedLongLong;
2522    PtrDiffType = SignedLongLong;
2523    IntPtrType = SignedLongLong;
2524    this->UserLabelPrefix = "";
2525  }
2526  virtual void getTargetDefines(const LangOptions &Opts,
2527                                MacroBuilder &Builder) const {
2528    WindowsTargetInfo<X86_64TargetInfo>::getTargetDefines(Opts, Builder);
2529    Builder.defineMacro("_WIN64");
2530  }
2531  virtual const char *getVAListDeclaration() const {
2532    return "typedef char* __builtin_va_list;";
2533  }
2534};
2535} // end anonymous namespace
2536
2537namespace {
2538// x86-64 Windows Visual Studio target
2539class VisualStudioWindowsX86_64TargetInfo : public WindowsX86_64TargetInfo {
2540public:
2541  VisualStudioWindowsX86_64TargetInfo(const std::string& triple)
2542    : WindowsX86_64TargetInfo(triple) {
2543    LongDoubleWidth = LongDoubleAlign = 64;
2544    LongDoubleFormat = &llvm::APFloat::IEEEdouble;
2545  }
2546  virtual void getTargetDefines(const LangOptions &Opts,
2547                                MacroBuilder &Builder) const {
2548    WindowsX86_64TargetInfo::getTargetDefines(Opts, Builder);
2549    WindowsX86_64TargetInfo::getVisualStudioDefines(Opts, Builder);
2550    Builder.defineMacro("_M_X64");
2551    Builder.defineMacro("_M_AMD64");
2552  }
2553};
2554} // end anonymous namespace
2555
2556namespace {
2557// x86-64 MinGW target
2558class MinGWX86_64TargetInfo : public WindowsX86_64TargetInfo {
2559public:
2560  MinGWX86_64TargetInfo(const std::string& triple)
2561    : WindowsX86_64TargetInfo(triple) {
2562  }
2563  virtual void getTargetDefines(const LangOptions &Opts,
2564                                MacroBuilder &Builder) const {
2565    WindowsX86_64TargetInfo::getTargetDefines(Opts, Builder);
2566    DefineStd(Builder, "WIN64", Opts);
2567    Builder.defineMacro("__MSVCRT__");
2568    Builder.defineMacro("__MINGW32__");
2569    Builder.defineMacro("__MINGW64__");
2570
2571    // mingw32-gcc provides __declspec(a) as alias of __attribute__((a)).
2572    // In contrast, clang-cc1 provides __declspec(a) with -fms-extensions.
2573    if (Opts.MicrosoftExt)
2574      // Provide "as-is" __declspec.
2575      Builder.defineMacro("__declspec", "__declspec");
2576    else
2577      // Provide alias of __attribute__ like mingw32-gcc.
2578      Builder.defineMacro("__declspec(a)", "__attribute__((a))");
2579  }
2580};
2581} // end anonymous namespace
2582
2583namespace {
2584class DarwinX86_64TargetInfo : public DarwinTargetInfo<X86_64TargetInfo> {
2585public:
2586  DarwinX86_64TargetInfo(const std::string& triple)
2587      : DarwinTargetInfo<X86_64TargetInfo>(triple) {
2588    Int64Type = SignedLongLong;
2589  }
2590};
2591} // end anonymous namespace
2592
2593namespace {
2594class OpenBSDX86_64TargetInfo : public OpenBSDTargetInfo<X86_64TargetInfo> {
2595public:
2596  OpenBSDX86_64TargetInfo(const std::string& triple)
2597      : OpenBSDTargetInfo<X86_64TargetInfo>(triple) {
2598    IntMaxType = SignedLongLong;
2599    UIntMaxType = UnsignedLongLong;
2600    Int64Type = SignedLongLong;
2601  }
2602};
2603} // end anonymous namespace
2604
2605namespace {
2606class ARMTargetInfo : public TargetInfo {
2607  // Possible FPU choices.
2608  enum FPUMode {
2609    NoFPU,
2610    VFP2FPU,
2611    VFP3FPU,
2612    NeonFPU
2613  };
2614
2615  static bool FPUModeIsVFP(FPUMode Mode) {
2616    return Mode >= VFP2FPU && Mode <= NeonFPU;
2617  }
2618
2619  static const TargetInfo::GCCRegAlias GCCRegAliases[];
2620  static const char * const GCCRegNames[];
2621
2622  std::string ABI, CPU;
2623
2624  unsigned FPU : 3;
2625
2626  unsigned IsThumb : 1;
2627
2628  // Initialized via features.
2629  unsigned SoftFloat : 1;
2630  unsigned SoftFloatABI : 1;
2631
2632  static const Builtin::Info BuiltinInfo[];
2633
2634public:
2635  ARMTargetInfo(const std::string &TripleStr)
2636    : TargetInfo(TripleStr), ABI("aapcs-linux"), CPU("arm1136j-s")
2637  {
2638    BigEndian = false;
2639    SizeType = UnsignedInt;
2640    PtrDiffType = SignedInt;
2641    // AAPCS 7.1.1, ARM-Linux ABI 2.4: type of wchar_t is unsigned int.
2642    WCharType = UnsignedInt;
2643
2644    // {} in inline assembly are neon specifiers, not assembly variant
2645    // specifiers.
2646    NoAsmVariants = true;
2647
2648    // FIXME: Should we just treat this as a feature?
2649    IsThumb = getTriple().getArchName().startswith("thumb");
2650    if (IsThumb) {
2651      // Thumb1 add sp, #imm requires the immediate value be multiple of 4,
2652      // so set preferred for small types to 32.
2653      DescriptionString = ("e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
2654                           "i64:64:64-f32:32:32-f64:64:64-"
2655                           "v64:64:64-v128:64:128-a0:0:32-n32-S64");
2656    } else {
2657      DescriptionString = ("e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2658                           "i64:64:64-f32:32:32-f64:64:64-"
2659                           "v64:64:64-v128:64:128-a0:0:64-n32-S64");
2660    }
2661
2662    // ARM targets default to using the ARM C++ ABI.
2663    CXXABI = CXXABI_ARM;
2664
2665    // ARM has atomics up to 8 bytes
2666    // FIXME: Set MaxAtomicInlineWidth if we have the feature v6e
2667    MaxAtomicPromoteWidth = 64;
2668
2669    // Do force alignment of members that follow zero length bitfields.  If
2670    // the alignment of the zero-length bitfield is greater than the member
2671    // that follows it, `bar', `bar' will be aligned as the  type of the
2672    // zero length bitfield.
2673    UseZeroLengthBitfieldAlignment = true;
2674  }
2675  virtual const char *getABI() const { return ABI.c_str(); }
2676  virtual bool setABI(const std::string &Name) {
2677    ABI = Name;
2678
2679    // The defaults (above) are for AAPCS, check if we need to change them.
2680    //
2681    // FIXME: We need support for -meabi... we could just mangle it into the
2682    // name.
2683    if (Name == "apcs-gnu") {
2684      DoubleAlign = LongLongAlign = LongDoubleAlign = SuitableAlign = 32;
2685      SizeType = UnsignedLong;
2686
2687      // Revert to using SignedInt on apcs-gnu to comply with existing behaviour.
2688      WCharType = SignedInt;
2689
2690      // Do not respect the alignment of bit-field types when laying out
2691      // structures. This corresponds to PCC_BITFIELD_TYPE_MATTERS in gcc.
2692      UseBitFieldTypeAlignment = false;
2693
2694      /// gcc forces the alignment to 4 bytes, regardless of the type of the
2695      /// zero length bitfield.  This corresponds to EMPTY_FIELD_BOUNDARY in
2696      /// gcc.
2697      ZeroLengthBitfieldBoundary = 32;
2698
2699      if (IsThumb) {
2700        // Thumb1 add sp, #imm requires the immediate value be multiple of 4,
2701        // so set preferred for small types to 32.
2702        DescriptionString = ("e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
2703                             "i64:32:64-f32:32:32-f64:32:64-"
2704                             "v64:32:64-v128:32:128-a0:0:32-n32-S32");
2705      } else {
2706        DescriptionString = ("e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
2707                             "i64:32:64-f32:32:32-f64:32:64-"
2708                             "v64:32:64-v128:32:128-a0:0:32-n32-S32");
2709      }
2710
2711      // FIXME: Override "preferred align" for double and long long.
2712    } else if (Name == "aapcs") {
2713      // FIXME: Enumerated types are variable width in straight AAPCS.
2714    } else if (Name == "aapcs-linux") {
2715      ;
2716    } else
2717      return false;
2718
2719    return true;
2720  }
2721
2722  void getDefaultFeatures(llvm::StringMap<bool> &Features) const {
2723    if (CPU == "arm1136jf-s" || CPU == "arm1176jzf-s" || CPU == "mpcore")
2724      Features["vfp2"] = true;
2725    else if (CPU == "cortex-a8" || CPU == "cortex-a9")
2726      Features["neon"] = true;
2727  }
2728
2729  virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
2730                                 StringRef Name,
2731                                 bool Enabled) const {
2732    if (Name == "soft-float" || Name == "soft-float-abi" ||
2733        Name == "vfp2" || Name == "vfp3" || Name == "neon" || Name == "d16") {
2734      Features[Name] = Enabled;
2735    } else
2736      return false;
2737
2738    return true;
2739  }
2740
2741  virtual void HandleTargetFeatures(std::vector<std::string> &Features) {
2742    FPU = NoFPU;
2743    SoftFloat = SoftFloatABI = false;
2744    for (unsigned i = 0, e = Features.size(); i != e; ++i) {
2745      if (Features[i] == "+soft-float")
2746        SoftFloat = true;
2747      else if (Features[i] == "+soft-float-abi")
2748        SoftFloatABI = true;
2749      else if (Features[i] == "+vfp2")
2750        FPU = VFP2FPU;
2751      else if (Features[i] == "+vfp3")
2752        FPU = VFP3FPU;
2753      else if (Features[i] == "+neon")
2754        FPU = NeonFPU;
2755    }
2756
2757    // Remove front-end specific options which the backend handles differently.
2758    std::vector<std::string>::iterator it;
2759    it = std::find(Features.begin(), Features.end(), "+soft-float");
2760    if (it != Features.end())
2761      Features.erase(it);
2762    it = std::find(Features.begin(), Features.end(), "+soft-float-abi");
2763    if (it != Features.end())
2764      Features.erase(it);
2765  }
2766
2767  virtual bool hasFeature(StringRef Feature) const {
2768    return llvm::StringSwitch<bool>(Feature)
2769        .Case("arm", true)
2770        .Case("softfloat", SoftFloat)
2771        .Case("thumb", IsThumb)
2772        .Case("neon", FPU == NeonFPU && !SoftFloat &&
2773              StringRef(getCPUDefineSuffix(CPU)).startswith("7"))
2774        .Default(false);
2775  }
2776  static const char *getCPUDefineSuffix(StringRef Name) {
2777    return llvm::StringSwitch<const char*>(Name)
2778      .Cases("arm8", "arm810", "4")
2779      .Cases("strongarm", "strongarm110", "strongarm1100", "strongarm1110", "4")
2780      .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "arm720t", "arm9", "4T")
2781      .Cases("arm9tdmi", "arm920", "arm920t", "arm922t", "arm940t", "4T")
2782      .Case("ep9312", "4T")
2783      .Cases("arm10tdmi", "arm1020t", "5T")
2784      .Cases("arm9e", "arm946e-s", "arm966e-s", "arm968e-s", "5TE")
2785      .Case("arm926ej-s", "5TEJ")
2786      .Cases("arm10e", "arm1020e", "arm1022e", "5TE")
2787      .Cases("xscale", "iwmmxt", "5TE")
2788      .Case("arm1136j-s", "6J")
2789      .Cases("arm1176jz-s", "arm1176jzf-s", "6ZK")
2790      .Cases("arm1136jf-s", "mpcorenovfp", "mpcore", "6K")
2791      .Cases("arm1156t2-s", "arm1156t2f-s", "6T2")
2792      .Cases("cortex-a8", "cortex-a9", "7A")
2793      .Case("cortex-m3", "7M")
2794      .Case("cortex-m4", "7M")
2795      .Case("cortex-m0", "6M")
2796      .Default(0);
2797  }
2798  virtual bool setCPU(const std::string &Name) {
2799    if (!getCPUDefineSuffix(Name))
2800      return false;
2801
2802    CPU = Name;
2803    return true;
2804  }
2805  virtual void getTargetDefines(const LangOptions &Opts,
2806                                MacroBuilder &Builder) const {
2807    // Target identification.
2808    Builder.defineMacro("__arm");
2809    Builder.defineMacro("__arm__");
2810
2811    // Target properties.
2812    Builder.defineMacro("__ARMEL__");
2813    Builder.defineMacro("__LITTLE_ENDIAN__");
2814    Builder.defineMacro("__REGISTER_PREFIX__", "");
2815
2816    StringRef CPUArch = getCPUDefineSuffix(CPU);
2817    Builder.defineMacro("__ARM_ARCH_" + CPUArch + "__");
2818
2819    // Subtarget options.
2820
2821    // FIXME: It's more complicated than this and we don't really support
2822    // interworking.
2823    if ('5' <= CPUArch[0] && CPUArch[0] <= '7')
2824      Builder.defineMacro("__THUMB_INTERWORK__");
2825
2826    if (ABI == "aapcs" || ABI == "aapcs-linux")
2827      Builder.defineMacro("__ARM_EABI__");
2828
2829    if (SoftFloat)
2830      Builder.defineMacro("__SOFTFP__");
2831
2832    if (CPU == "xscale")
2833      Builder.defineMacro("__XSCALE__");
2834
2835    bool IsARMv7 = CPUArch.startswith("7");
2836    if (IsThumb) {
2837      Builder.defineMacro("__THUMBEL__");
2838      Builder.defineMacro("__thumb__");
2839      if (CPUArch == "6T2" || IsARMv7)
2840        Builder.defineMacro("__thumb2__");
2841    }
2842
2843    // Note, this is always on in gcc, even though it doesn't make sense.
2844    Builder.defineMacro("__APCS_32__");
2845
2846    if (FPUModeIsVFP((FPUMode) FPU))
2847      Builder.defineMacro("__VFP_FP__");
2848
2849    // This only gets set when Neon instructions are actually available, unlike
2850    // the VFP define, hence the soft float and arch check. This is subtly
2851    // different from gcc, we follow the intent which was that it should be set
2852    // when Neon instructions are actually available.
2853    if (FPU == NeonFPU && !SoftFloat && IsARMv7)
2854      Builder.defineMacro("__ARM_NEON__");
2855  }
2856  virtual void getTargetBuiltins(const Builtin::Info *&Records,
2857                                 unsigned &NumRecords) const {
2858    Records = BuiltinInfo;
2859    NumRecords = clang::ARM::LastTSBuiltin-Builtin::FirstTSBuiltin;
2860  }
2861  virtual bool isCLZForZeroUndef() const { return false; }
2862  virtual const char *getVAListDeclaration() const {
2863    return "typedef void* __builtin_va_list;";
2864  }
2865  virtual void getGCCRegNames(const char * const *&Names,
2866                              unsigned &NumNames) const;
2867  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
2868                                unsigned &NumAliases) const;
2869  virtual bool validateAsmConstraint(const char *&Name,
2870                                     TargetInfo::ConstraintInfo &Info) const {
2871    // FIXME: Check if this is complete
2872    switch (*Name) {
2873    default:
2874    case 'l': // r0-r7
2875    case 'h': // r8-r15
2876    case 'w': // VFP Floating point register single precision
2877    case 'P': // VFP Floating point register double precision
2878      Info.setAllowsRegister();
2879      return true;
2880    case 'Q': // A memory address that is a single base register.
2881      Info.setAllowsMemory();
2882      return true;
2883    case 'U': // a memory reference...
2884      switch (Name[1]) {
2885      case 'q': // ...ARMV4 ldrsb
2886      case 'v': // ...VFP load/store (reg+constant offset)
2887      case 'y': // ...iWMMXt load/store
2888      case 't': // address valid for load/store opaque types wider
2889	        // than 128-bits
2890      case 'n': // valid address for Neon doubleword vector load/store
2891      case 'm': // valid address for Neon element and structure load/store
2892      case 's': // valid address for non-offset loads/stores of quad-word
2893	        // values in four ARM registers
2894        Info.setAllowsMemory();
2895        Name++;
2896        return true;
2897      }
2898    }
2899    return false;
2900  }
2901  virtual std::string convertConstraint(const char *&Constraint) const {
2902    std::string R;
2903    switch (*Constraint) {
2904    case 'U':   // Two-character constraint; add "^" hint for later parsing.
2905      R = std::string("^") + std::string(Constraint, 2);
2906      Constraint++;
2907      break;
2908    case 'p': // 'p' should be translated to 'r' by default.
2909      R = std::string("r");
2910      break;
2911    default:
2912      return std::string(1, *Constraint);
2913    }
2914    return R;
2915  }
2916  virtual const char *getClobbers() const {
2917    // FIXME: Is this really right?
2918    return "";
2919  }
2920};
2921
2922const char * const ARMTargetInfo::GCCRegNames[] = {
2923  // Integer registers
2924  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
2925  "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc",
2926
2927  // Float registers
2928  "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
2929  "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15",
2930  "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23",
2931  "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31",
2932
2933  // Double registers
2934  "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
2935  "d8", "d9", "d10", "d11", "d12", "d13", "d14", "d15",
2936  "d16", "d17", "d18", "d19", "d20", "d21", "d22", "d23",
2937  "d24", "d25", "d26", "d27", "d28", "d29", "d30", "d31",
2938
2939  // Quad registers
2940  "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
2941  "q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
2942};
2943
2944void ARMTargetInfo::getGCCRegNames(const char * const *&Names,
2945                                   unsigned &NumNames) const {
2946  Names = GCCRegNames;
2947  NumNames = llvm::array_lengthof(GCCRegNames);
2948}
2949
2950const TargetInfo::GCCRegAlias ARMTargetInfo::GCCRegAliases[] = {
2951  { { "a1" }, "r0" },
2952  { { "a2" }, "r1" },
2953  { { "a3" }, "r2" },
2954  { { "a4" }, "r3" },
2955  { { "v1" }, "r4" },
2956  { { "v2" }, "r5" },
2957  { { "v3" }, "r6" },
2958  { { "v4" }, "r7" },
2959  { { "v5" }, "r8" },
2960  { { "v6", "rfp" }, "r9" },
2961  { { "sl" }, "r10" },
2962  { { "fp" }, "r11" },
2963  { { "ip" }, "r12" },
2964  { { "r13" }, "sp" },
2965  { { "r14" }, "lr" },
2966  { { "r15" }, "pc" },
2967  // The S, D and Q registers overlap, but aren't really aliases; we
2968  // don't want to substitute one of these for a different-sized one.
2969};
2970
2971void ARMTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
2972                                       unsigned &NumAliases) const {
2973  Aliases = GCCRegAliases;
2974  NumAliases = llvm::array_lengthof(GCCRegAliases);
2975}
2976
2977const Builtin::Info ARMTargetInfo::BuiltinInfo[] = {
2978#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, ALL_LANGUAGES },
2979#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER,\
2980                                              ALL_LANGUAGES },
2981#include "clang/Basic/BuiltinsARM.def"
2982};
2983} // end anonymous namespace.
2984
2985namespace {
2986class DarwinARMTargetInfo :
2987  public DarwinTargetInfo<ARMTargetInfo> {
2988protected:
2989  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
2990                            MacroBuilder &Builder) const {
2991    getDarwinDefines(Builder, Opts, Triple, PlatformName, PlatformMinVersion);
2992  }
2993
2994public:
2995  DarwinARMTargetInfo(const std::string& triple)
2996    : DarwinTargetInfo<ARMTargetInfo>(triple) {
2997    HasAlignMac68kSupport = true;
2998    // iOS always has 64-bit atomic instructions.
2999    // FIXME: This should be based off of the target features in ARMTargetInfo.
3000    MaxAtomicInlineWidth = 64;
3001  }
3002};
3003} // end anonymous namespace.
3004
3005
3006namespace {
3007// Hexagon abstract base class
3008class HexagonTargetInfo : public TargetInfo {
3009  static const Builtin::Info BuiltinInfo[];
3010  static const char * const GCCRegNames[];
3011  static const TargetInfo::GCCRegAlias GCCRegAliases[];
3012  std::string CPU;
3013public:
3014  HexagonTargetInfo(const std::string& triple) : TargetInfo(triple)  {
3015    BigEndian = false;
3016    DescriptionString = ("e-p:32:32:32-"
3017                         "i64:64:64-i32:32:32-"
3018                         "i16:16:16-i1:32:32-a:0:0");
3019
3020    // {} in inline assembly are packet specifiers, not assembly variant
3021    // specifiers.
3022    NoAsmVariants = true;
3023  }
3024
3025  virtual void getTargetBuiltins(const Builtin::Info *&Records,
3026                                 unsigned &NumRecords) const {
3027    Records = BuiltinInfo;
3028    NumRecords = clang::Hexagon::LastTSBuiltin-Builtin::FirstTSBuiltin;
3029  }
3030
3031  virtual bool validateAsmConstraint(const char *&Name,
3032                                     TargetInfo::ConstraintInfo &Info) const {
3033    return true;
3034  }
3035
3036  virtual void getTargetDefines(const LangOptions &Opts,
3037                                MacroBuilder &Builder) const;
3038
3039  virtual bool hasFeature(StringRef Feature) const {
3040    return Feature == "hexagon";
3041  }
3042
3043  virtual const char *getVAListDeclaration() const {
3044    return "typedef char* __builtin_va_list;";
3045  }
3046  virtual void getGCCRegNames(const char * const *&Names,
3047                              unsigned &NumNames) const;
3048  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3049                                unsigned &NumAliases) const;
3050  virtual const char *getClobbers() const {
3051    return "";
3052  }
3053
3054  static const char *getHexagonCPUSuffix(StringRef Name) {
3055    return llvm::StringSwitch<const char*>(Name)
3056      .Case("hexagonv2", "2")
3057      .Case("hexagonv3", "3")
3058      .Case("hexagonv4", "4")
3059      .Default(0);
3060  }
3061
3062  virtual bool setCPU(const std::string &Name) {
3063    if (!getHexagonCPUSuffix(Name))
3064      return false;
3065
3066    CPU = Name;
3067    return true;
3068  }
3069};
3070
3071void HexagonTargetInfo::getTargetDefines(const LangOptions &Opts,
3072                                MacroBuilder &Builder) const {
3073  Builder.defineMacro("qdsp6");
3074  Builder.defineMacro("__qdsp6", "1");
3075  Builder.defineMacro("__qdsp6__", "1");
3076
3077  Builder.defineMacro("hexagon");
3078  Builder.defineMacro("__hexagon", "1");
3079  Builder.defineMacro("__hexagon__", "1");
3080
3081  if(CPU == "hexagonv1") {
3082    Builder.defineMacro("__HEXAGON_V1__");
3083    Builder.defineMacro("__HEXAGON_ARCH__", "1");
3084    if(Opts.HexagonQdsp6Compat) {
3085      Builder.defineMacro("__QDSP6_V1__");
3086      Builder.defineMacro("__QDSP6_ARCH__", "1");
3087    }
3088  }
3089  else if(CPU == "hexagonv2") {
3090    Builder.defineMacro("__HEXAGON_V2__");
3091    Builder.defineMacro("__HEXAGON_ARCH__", "2");
3092    if(Opts.HexagonQdsp6Compat) {
3093      Builder.defineMacro("__QDSP6_V2__");
3094      Builder.defineMacro("__QDSP6_ARCH__", "2");
3095    }
3096  }
3097  else if(CPU == "hexagonv3") {
3098    Builder.defineMacro("__HEXAGON_V3__");
3099    Builder.defineMacro("__HEXAGON_ARCH__", "3");
3100    if(Opts.HexagonQdsp6Compat) {
3101      Builder.defineMacro("__QDSP6_V3__");
3102      Builder.defineMacro("__QDSP6_ARCH__", "3");
3103    }
3104  }
3105  else if(CPU == "hexagonv4") {
3106    Builder.defineMacro("__HEXAGON_V4__");
3107    Builder.defineMacro("__HEXAGON_ARCH__", "4");
3108    if(Opts.HexagonQdsp6Compat) {
3109      Builder.defineMacro("__QDSP6_V4__");
3110      Builder.defineMacro("__QDSP6_ARCH__", "4");
3111    }
3112  }
3113}
3114
3115const char * const HexagonTargetInfo::GCCRegNames[] = {
3116  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
3117  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
3118  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
3119  "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
3120  "p0", "p1", "p2", "p3",
3121  "sa0", "lc0", "sa1", "lc1", "m0", "m1", "usr", "ugp"
3122};
3123
3124void HexagonTargetInfo::getGCCRegNames(const char * const *&Names,
3125                                   unsigned &NumNames) const {
3126  Names = GCCRegNames;
3127  NumNames = llvm::array_lengthof(GCCRegNames);
3128}
3129
3130
3131const TargetInfo::GCCRegAlias HexagonTargetInfo::GCCRegAliases[] = {
3132  { { "sp" }, "r29" },
3133  { { "fp" }, "r30" },
3134  { { "lr" }, "r31" },
3135 };
3136
3137void HexagonTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
3138                                     unsigned &NumAliases) const {
3139  Aliases = GCCRegAliases;
3140  NumAliases = llvm::array_lengthof(GCCRegAliases);
3141}
3142
3143
3144const Builtin::Info HexagonTargetInfo::BuiltinInfo[] = {
3145#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, ALL_LANGUAGES },
3146#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER,\
3147                                              ALL_LANGUAGES },
3148#include "clang/Basic/BuiltinsHexagon.def"
3149};
3150}
3151
3152
3153namespace {
3154class SparcV8TargetInfo : public TargetInfo {
3155  static const TargetInfo::GCCRegAlias GCCRegAliases[];
3156  static const char * const GCCRegNames[];
3157  bool SoftFloat;
3158public:
3159  SparcV8TargetInfo(const std::string& triple) : TargetInfo(triple) {
3160    // FIXME: Support Sparc quad-precision long double?
3161    BigEndian = false;
3162    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
3163                        "i64:64:64-f32:32:32-f64:64:64-v64:64:64-n32";
3164  }
3165  virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
3166                                 StringRef Name,
3167                                 bool Enabled) const {
3168    if (Name == "soft-float")
3169      Features[Name] = Enabled;
3170    else
3171      return false;
3172
3173    return true;
3174  }
3175  virtual void HandleTargetFeatures(std::vector<std::string> &Features) {
3176    SoftFloat = false;
3177    for (unsigned i = 0, e = Features.size(); i != e; ++i)
3178      if (Features[i] == "+soft-float")
3179        SoftFloat = true;
3180  }
3181  virtual void getTargetDefines(const LangOptions &Opts,
3182                                MacroBuilder &Builder) const {
3183    DefineStd(Builder, "sparc", Opts);
3184    Builder.defineMacro("__sparcv8");
3185    Builder.defineMacro("__REGISTER_PREFIX__", "");
3186
3187    if (SoftFloat)
3188      Builder.defineMacro("SOFT_FLOAT", "1");
3189  }
3190
3191  virtual bool hasFeature(StringRef Feature) const {
3192    return llvm::StringSwitch<bool>(Feature)
3193             .Case("softfloat", SoftFloat)
3194             .Case("sparc", true)
3195             .Default(false);
3196  }
3197
3198  virtual void getTargetBuiltins(const Builtin::Info *&Records,
3199                                 unsigned &NumRecords) const {
3200    // FIXME: Implement!
3201  }
3202  virtual const char *getVAListDeclaration() const {
3203    return "typedef void* __builtin_va_list;";
3204  }
3205  virtual void getGCCRegNames(const char * const *&Names,
3206                              unsigned &NumNames) const;
3207  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3208                                unsigned &NumAliases) const;
3209  virtual bool validateAsmConstraint(const char *&Name,
3210                                     TargetInfo::ConstraintInfo &info) const {
3211    // FIXME: Implement!
3212    return false;
3213  }
3214  virtual const char *getClobbers() const {
3215    // FIXME: Implement!
3216    return "";
3217  }
3218};
3219
3220const char * const SparcV8TargetInfo::GCCRegNames[] = {
3221  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
3222  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
3223  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
3224  "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
3225};
3226
3227void SparcV8TargetInfo::getGCCRegNames(const char * const *&Names,
3228                                       unsigned &NumNames) const {
3229  Names = GCCRegNames;
3230  NumNames = llvm::array_lengthof(GCCRegNames);
3231}
3232
3233const TargetInfo::GCCRegAlias SparcV8TargetInfo::GCCRegAliases[] = {
3234  { { "g0" }, "r0" },
3235  { { "g1" }, "r1" },
3236  { { "g2" }, "r2" },
3237  { { "g3" }, "r3" },
3238  { { "g4" }, "r4" },
3239  { { "g5" }, "r5" },
3240  { { "g6" }, "r6" },
3241  { { "g7" }, "r7" },
3242  { { "o0" }, "r8" },
3243  { { "o1" }, "r9" },
3244  { { "o2" }, "r10" },
3245  { { "o3" }, "r11" },
3246  { { "o4" }, "r12" },
3247  { { "o5" }, "r13" },
3248  { { "o6", "sp" }, "r14" },
3249  { { "o7" }, "r15" },
3250  { { "l0" }, "r16" },
3251  { { "l1" }, "r17" },
3252  { { "l2" }, "r18" },
3253  { { "l3" }, "r19" },
3254  { { "l4" }, "r20" },
3255  { { "l5" }, "r21" },
3256  { { "l6" }, "r22" },
3257  { { "l7" }, "r23" },
3258  { { "i0" }, "r24" },
3259  { { "i1" }, "r25" },
3260  { { "i2" }, "r26" },
3261  { { "i3" }, "r27" },
3262  { { "i4" }, "r28" },
3263  { { "i5" }, "r29" },
3264  { { "i6", "fp" }, "r30" },
3265  { { "i7" }, "r31" },
3266};
3267
3268void SparcV8TargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
3269                                         unsigned &NumAliases) const {
3270  Aliases = GCCRegAliases;
3271  NumAliases = llvm::array_lengthof(GCCRegAliases);
3272}
3273} // end anonymous namespace.
3274
3275namespace {
3276class AuroraUXSparcV8TargetInfo : public AuroraUXTargetInfo<SparcV8TargetInfo> {
3277public:
3278  AuroraUXSparcV8TargetInfo(const std::string& triple) :
3279      AuroraUXTargetInfo<SparcV8TargetInfo>(triple) {
3280    SizeType = UnsignedInt;
3281    PtrDiffType = SignedInt;
3282  }
3283};
3284class SolarisSparcV8TargetInfo : public SolarisTargetInfo<SparcV8TargetInfo> {
3285public:
3286  SolarisSparcV8TargetInfo(const std::string& triple) :
3287      SolarisTargetInfo<SparcV8TargetInfo>(triple) {
3288    SizeType = UnsignedInt;
3289    PtrDiffType = SignedInt;
3290  }
3291};
3292} // end anonymous namespace.
3293
3294namespace {
3295  class MSP430TargetInfo : public TargetInfo {
3296    static const char * const GCCRegNames[];
3297  public:
3298    MSP430TargetInfo(const std::string& triple) : TargetInfo(triple) {
3299      BigEndian = false;
3300      TLSSupported = false;
3301      IntWidth = 16; IntAlign = 16;
3302      LongWidth = 32; LongLongWidth = 64;
3303      LongAlign = LongLongAlign = 16;
3304      PointerWidth = 16; PointerAlign = 16;
3305      SuitableAlign = 16;
3306      SizeType = UnsignedInt;
3307      IntMaxType = SignedLong;
3308      UIntMaxType = UnsignedLong;
3309      IntPtrType = SignedShort;
3310      PtrDiffType = SignedInt;
3311      SigAtomicType = SignedLong;
3312      DescriptionString = "e-p:16:16:16-i8:8:8-i16:16:16-i32:16:32-n8:16";
3313   }
3314    virtual void getTargetDefines(const LangOptions &Opts,
3315                                  MacroBuilder &Builder) const {
3316      Builder.defineMacro("MSP430");
3317      Builder.defineMacro("__MSP430__");
3318      // FIXME: defines for different 'flavours' of MCU
3319    }
3320    virtual void getTargetBuiltins(const Builtin::Info *&Records,
3321                                   unsigned &NumRecords) const {
3322     // FIXME: Implement.
3323      Records = 0;
3324      NumRecords = 0;
3325    }
3326    virtual bool hasFeature(StringRef Feature) const {
3327      return Feature == "msp430";
3328    }
3329    virtual void getGCCRegNames(const char * const *&Names,
3330                                unsigned &NumNames) const;
3331    virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3332                                  unsigned &NumAliases) const {
3333      // No aliases.
3334      Aliases = 0;
3335      NumAliases = 0;
3336    }
3337    virtual bool validateAsmConstraint(const char *&Name,
3338                                       TargetInfo::ConstraintInfo &info) const {
3339      // No target constraints for now.
3340      return false;
3341    }
3342    virtual const char *getClobbers() const {
3343      // FIXME: Is this really right?
3344      return "";
3345    }
3346    virtual const char *getVAListDeclaration() const {
3347      // FIXME: implement
3348      return "typedef char* __builtin_va_list;";
3349   }
3350  };
3351
3352  const char * const MSP430TargetInfo::GCCRegNames[] = {
3353    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
3354    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
3355  };
3356
3357  void MSP430TargetInfo::getGCCRegNames(const char * const *&Names,
3358                                        unsigned &NumNames) const {
3359    Names = GCCRegNames;
3360    NumNames = llvm::array_lengthof(GCCRegNames);
3361  }
3362}
3363
3364namespace {
3365
3366  // LLVM and Clang cannot be used directly to output native binaries for
3367  // target, but is used to compile C code to llvm bitcode with correct
3368  // type and alignment information.
3369  //
3370  // TCE uses the llvm bitcode as input and uses it for generating customized
3371  // target processor and program binary. TCE co-design environment is
3372  // publicly available in http://tce.cs.tut.fi
3373
3374  static const unsigned TCEOpenCLAddrSpaceMap[] = {
3375      3, // opencl_global
3376      4, // opencl_local
3377      5  // opencl_constant
3378  };
3379
3380  class TCETargetInfo : public TargetInfo{
3381  public:
3382    TCETargetInfo(const std::string& triple) : TargetInfo(triple) {
3383      TLSSupported = false;
3384      IntWidth = 32;
3385      LongWidth = LongLongWidth = 32;
3386      PointerWidth = 32;
3387      IntAlign = 32;
3388      LongAlign = LongLongAlign = 32;
3389      PointerAlign = 32;
3390      SuitableAlign = 32;
3391      SizeType = UnsignedInt;
3392      IntMaxType = SignedLong;
3393      UIntMaxType = UnsignedLong;
3394      IntPtrType = SignedInt;
3395      PtrDiffType = SignedInt;
3396      FloatWidth = 32;
3397      FloatAlign = 32;
3398      DoubleWidth = 32;
3399      DoubleAlign = 32;
3400      LongDoubleWidth = 32;
3401      LongDoubleAlign = 32;
3402      FloatFormat = &llvm::APFloat::IEEEsingle;
3403      DoubleFormat = &llvm::APFloat::IEEEsingle;
3404      LongDoubleFormat = &llvm::APFloat::IEEEsingle;
3405      DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:32-"
3406                          "i16:16:32-i32:32:32-i64:32:32-"
3407                          "f32:32:32-f64:32:32-v64:32:32-"
3408                          "v128:32:32-a0:0:32-n32";
3409      AddrSpaceMap = &TCEOpenCLAddrSpaceMap;
3410    }
3411
3412    virtual void getTargetDefines(const LangOptions &Opts,
3413                                  MacroBuilder &Builder) const {
3414      DefineStd(Builder, "tce", Opts);
3415      Builder.defineMacro("__TCE__");
3416      Builder.defineMacro("__TCE_V1__");
3417    }
3418    virtual bool hasFeature(StringRef Feature) const {
3419      return Feature == "tce";
3420    }
3421
3422    virtual void getTargetBuiltins(const Builtin::Info *&Records,
3423                                   unsigned &NumRecords) const {}
3424    virtual const char *getClobbers() const {
3425      return "";
3426    }
3427    virtual const char *getVAListDeclaration() const {
3428      return "typedef void* __builtin_va_list;";
3429    }
3430    virtual void getGCCRegNames(const char * const *&Names,
3431                                unsigned &NumNames) const {}
3432    virtual bool validateAsmConstraint(const char *&Name,
3433                                       TargetInfo::ConstraintInfo &info) const {
3434      return true;
3435    }
3436    virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3437                                  unsigned &NumAliases) const {}
3438  };
3439}
3440
3441namespace {
3442class MipsTargetInfoBase : public TargetInfo {
3443  std::string CPU;
3444  bool SoftFloat;
3445  bool SingleFloat;
3446
3447protected:
3448  std::string ABI;
3449
3450public:
3451  MipsTargetInfoBase(const std::string& triple, const std::string& ABIStr)
3452    : TargetInfo(triple),
3453      SoftFloat(false), SingleFloat(false),
3454      ABI(ABIStr)
3455  {}
3456
3457  virtual const char *getABI() const { return ABI.c_str(); }
3458  virtual bool setABI(const std::string &Name) = 0;
3459  virtual bool setCPU(const std::string &Name) {
3460    CPU = Name;
3461    return true;
3462  }
3463  void getDefaultFeatures(llvm::StringMap<bool> &Features) const {
3464    Features[ABI] = true;
3465    Features[CPU] = true;
3466  }
3467
3468  virtual void getArchDefines(const LangOptions &Opts,
3469                              MacroBuilder &Builder) const {
3470    if (SoftFloat)
3471      Builder.defineMacro("__mips_soft_float", Twine(1));
3472    else if (SingleFloat)
3473      Builder.defineMacro("__mips_single_float", Twine(1));
3474    else if (!SoftFloat && !SingleFloat)
3475      Builder.defineMacro("__mips_hard_float", Twine(1));
3476    else
3477      llvm_unreachable("Invalid float ABI for Mips.");
3478  }
3479
3480  virtual void getTargetDefines(const LangOptions &Opts,
3481                                MacroBuilder &Builder) const = 0;
3482  virtual void getTargetBuiltins(const Builtin::Info *&Records,
3483                                 unsigned &NumRecords) const {
3484    // FIXME: Implement!
3485  }
3486  virtual bool hasFeature(StringRef Feature) const {
3487    return Feature == "mips";
3488  }
3489  virtual const char *getVAListDeclaration() const {
3490    return "typedef void* __builtin_va_list;";
3491  }
3492  virtual void getGCCRegNames(const char * const *&Names,
3493                              unsigned &NumNames) const {
3494    static const char * const GCCRegNames[] = {
3495      // CPU register names
3496      // Must match second column of GCCRegAliases
3497      "$0",   "$1",   "$2",   "$3",   "$4",   "$5",   "$6",   "$7",
3498      "$8",   "$9",   "$10",  "$11",  "$12",  "$13",  "$14",  "$15",
3499      "$16",  "$17",  "$18",  "$19",  "$20",  "$21",  "$22",  "$23",
3500      "$24",  "$25",  "$26",  "$27",  "$28",  "$29",  "$30",  "$31",
3501      // Floating point register names
3502      "$f0",  "$f1",  "$f2",  "$f3",  "$f4",  "$f5",  "$f6",  "$f7",
3503      "$f8",  "$f9",  "$f10", "$f11", "$f12", "$f13", "$f14", "$f15",
3504      "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",
3505      "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31",
3506      // Hi/lo and condition register names
3507      "hi",   "lo",   "",     "$fcc0","$fcc1","$fcc2","$fcc3","$fcc4",
3508      "$fcc5","$fcc6","$fcc7"
3509    };
3510    Names = GCCRegNames;
3511    NumNames = llvm::array_lengthof(GCCRegNames);
3512  }
3513  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3514                                unsigned &NumAliases) const = 0;
3515  virtual bool validateAsmConstraint(const char *&Name,
3516                                     TargetInfo::ConstraintInfo &Info) const {
3517    switch (*Name) {
3518    default:
3519      return false;
3520
3521    case 'r': // CPU registers.
3522    case 'd': // Equivalent to "r" unless generating MIPS16 code.
3523    case 'y': // Equivalent to "r", backwards compatibility only.
3524    case 'f': // floating-point registers.
3525      Info.setAllowsRegister();
3526      return true;
3527    }
3528  }
3529
3530  virtual const char *getClobbers() const {
3531    // FIXME: Implement!
3532    return "";
3533  }
3534
3535  virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
3536                                 StringRef Name,
3537                                 bool Enabled) const {
3538    if (Name == "soft-float" || Name == "single-float") {
3539      Features[Name] = Enabled;
3540      return true;
3541    }
3542    return false;
3543  }
3544
3545  virtual void HandleTargetFeatures(std::vector<std::string> &Features) {
3546    SoftFloat = false;
3547    SingleFloat = false;
3548
3549    for (std::vector<std::string>::iterator it = Features.begin(),
3550         ie = Features.end(); it != ie; ++it) {
3551      if (*it == "+single-float") {
3552        SingleFloat = true;
3553        break;
3554      }
3555
3556      if (*it == "+soft-float") {
3557        SoftFloat = true;
3558        // This option is front-end specific.
3559        // Do not need to pass it to the backend.
3560        Features.erase(it);
3561        break;
3562      }
3563    }
3564  }
3565};
3566
3567class Mips32TargetInfoBase : public MipsTargetInfoBase {
3568public:
3569  Mips32TargetInfoBase(const std::string& triple) :
3570    MipsTargetInfoBase(triple, "o32") {
3571    SizeType = UnsignedInt;
3572    PtrDiffType = SignedInt;
3573  }
3574  virtual bool setABI(const std::string &Name) {
3575    if ((Name == "o32") || (Name == "eabi")) {
3576      ABI = Name;
3577      return true;
3578    } else
3579      return false;
3580  }
3581  virtual void getArchDefines(const LangOptions &Opts,
3582                              MacroBuilder &Builder) const {
3583    MipsTargetInfoBase::getArchDefines(Opts, Builder);
3584
3585    Builder.defineMacro("_MIPS_SZPTR", Twine(getPointerWidth(0)));
3586    Builder.defineMacro("_MIPS_SZINT", Twine(getIntWidth()));
3587    Builder.defineMacro("_MIPS_SZLONG", Twine(getLongWidth()));
3588
3589    if (ABI == "o32") {
3590      Builder.defineMacro("__mips_o32");
3591      Builder.defineMacro("_ABIO32", "1");
3592      Builder.defineMacro("_MIPS_SIM", "_ABIO32");
3593    }
3594    else if (ABI == "eabi")
3595      Builder.defineMacro("__mips_eabi");
3596    else
3597      llvm_unreachable("Invalid ABI for Mips32.");
3598  }
3599  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3600                                unsigned &NumAliases) const {
3601    static const TargetInfo::GCCRegAlias GCCRegAliases[] = {
3602      { { "at" },  "$1" },
3603      { { "v0" },  "$2" },
3604      { { "v1" },  "$3" },
3605      { { "a0" },  "$4" },
3606      { { "a1" },  "$5" },
3607      { { "a2" },  "$6" },
3608      { { "a3" },  "$7" },
3609      { { "t0" },  "$8" },
3610      { { "t1" },  "$9" },
3611      { { "t2" }, "$10" },
3612      { { "t3" }, "$11" },
3613      { { "t4" }, "$12" },
3614      { { "t5" }, "$13" },
3615      { { "t6" }, "$14" },
3616      { { "t7" }, "$15" },
3617      { { "s0" }, "$16" },
3618      { { "s1" }, "$17" },
3619      { { "s2" }, "$18" },
3620      { { "s3" }, "$19" },
3621      { { "s4" }, "$20" },
3622      { { "s5" }, "$21" },
3623      { { "s6" }, "$22" },
3624      { { "s7" }, "$23" },
3625      { { "t8" }, "$24" },
3626      { { "t9" }, "$25" },
3627      { { "k0" }, "$26" },
3628      { { "k1" }, "$27" },
3629      { { "gp" }, "$28" },
3630      { { "sp","$sp" }, "$29" },
3631      { { "fp","$fp" }, "$30" },
3632      { { "ra" }, "$31" }
3633    };
3634    Aliases = GCCRegAliases;
3635    NumAliases = llvm::array_lengthof(GCCRegAliases);
3636  }
3637};
3638
3639class Mips32EBTargetInfo : public Mips32TargetInfoBase {
3640public:
3641  Mips32EBTargetInfo(const std::string& triple) : Mips32TargetInfoBase(triple) {
3642    DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3643                        "i64:64:64-f32:32:32-f64:64:64-v64:64:64-n32";
3644  }
3645  virtual void getTargetDefines(const LangOptions &Opts,
3646                                MacroBuilder &Builder) const {
3647    DefineStd(Builder, "mips", Opts);
3648    Builder.defineMacro("_mips");
3649    DefineStd(Builder, "MIPSEB", Opts);
3650    Builder.defineMacro("_MIPSEB");
3651    Builder.defineMacro("__REGISTER_PREFIX__", "");
3652    getArchDefines(Opts, Builder);
3653  }
3654};
3655
3656class Mips32ELTargetInfo : public Mips32TargetInfoBase {
3657public:
3658  Mips32ELTargetInfo(const std::string& triple) : Mips32TargetInfoBase(triple) {
3659    BigEndian = false;
3660    DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3661                        "i64:64:64-f32:32:32-f64:64:64-v64:64:64-n32";
3662  }
3663  virtual void getTargetDefines(const LangOptions &Opts,
3664                                MacroBuilder &Builder) const {
3665    DefineStd(Builder, "mips", Opts);
3666    Builder.defineMacro("_mips");
3667    DefineStd(Builder, "MIPSEL", Opts);
3668    Builder.defineMacro("_MIPSEL");
3669    Builder.defineMacro("__REGISTER_PREFIX__", "");
3670    getArchDefines(Opts, Builder);
3671  }
3672};
3673
3674class Mips64TargetInfoBase : public MipsTargetInfoBase {
3675  virtual void SetDescriptionString(const std::string &Name) = 0;
3676public:
3677  Mips64TargetInfoBase(const std::string& triple) :
3678    MipsTargetInfoBase(triple, "n64") {
3679    LongWidth = LongAlign = 64;
3680    PointerWidth = PointerAlign = 64;
3681    LongDoubleWidth = LongDoubleAlign = 128;
3682    LongDoubleFormat = &llvm::APFloat::IEEEquad;
3683    SuitableAlign = 128;
3684  }
3685  virtual bool setABI(const std::string &Name) {
3686    SetDescriptionString(Name);
3687
3688    if (Name != "n32" && Name != "n64")
3689      return false;
3690
3691    ABI = Name;
3692
3693    if (Name == "n32") {
3694      LongWidth = LongAlign = 32;
3695      PointerWidth = PointerAlign = 32;
3696    }
3697
3698    return true;
3699  }
3700  virtual void getArchDefines(const LangOptions &Opts,
3701                              MacroBuilder &Builder) const {
3702    MipsTargetInfoBase::getArchDefines(Opts, Builder);
3703
3704    if (ABI == "n32") {
3705      Builder.defineMacro("__mips_n32");
3706      Builder.defineMacro("_ABIN32", "2");
3707      Builder.defineMacro("_MIPS_SIM", "_ABIN32");
3708    }
3709    else if (ABI == "n64") {
3710      Builder.defineMacro("__mips_n64");
3711      Builder.defineMacro("_ABI64", "3");
3712      Builder.defineMacro("_MIPS_SIM", "_ABI64");
3713    }
3714    else
3715      llvm_unreachable("Invalid ABI for Mips64.");
3716  }
3717  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3718                                unsigned &NumAliases) const {
3719    static const TargetInfo::GCCRegAlias GCCRegAliases[] = {
3720      { { "at" },  "$1" },
3721      { { "v0" },  "$2" },
3722      { { "v1" },  "$3" },
3723      { { "a0" },  "$4" },
3724      { { "a1" },  "$5" },
3725      { { "a2" },  "$6" },
3726      { { "a3" },  "$7" },
3727      { { "a4" },  "$8" },
3728      { { "a5" },  "$9" },
3729      { { "a6" }, "$10" },
3730      { { "a7" }, "$11" },
3731      { { "t0" }, "$12" },
3732      { { "t1" }, "$13" },
3733      { { "t2" }, "$14" },
3734      { { "t3" }, "$15" },
3735      { { "s0" }, "$16" },
3736      { { "s1" }, "$17" },
3737      { { "s2" }, "$18" },
3738      { { "s3" }, "$19" },
3739      { { "s4" }, "$20" },
3740      { { "s5" }, "$21" },
3741      { { "s6" }, "$22" },
3742      { { "s7" }, "$23" },
3743      { { "t8" }, "$24" },
3744      { { "t9" }, "$25" },
3745      { { "k0" }, "$26" },
3746      { { "k1" }, "$27" },
3747      { { "gp" }, "$28" },
3748      { { "sp","$sp" }, "$29" },
3749      { { "fp","$fp" }, "$30" },
3750      { { "ra" }, "$31" }
3751    };
3752    Aliases = GCCRegAliases;
3753    NumAliases = llvm::array_lengthof(GCCRegAliases);
3754  }
3755};
3756
3757class Mips64EBTargetInfo : public Mips64TargetInfoBase {
3758  virtual void SetDescriptionString(const std::string &Name) {
3759    // Change DescriptionString only if ABI is n32.
3760    if (Name == "n32")
3761      DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3762                          "i64:64:64-f32:32:32-f64:64:64-f128:128:128-"
3763                          "v64:64:64-n32";
3764  }
3765public:
3766  Mips64EBTargetInfo(const std::string& triple) : Mips64TargetInfoBase(triple) {
3767    // Default ABI is n64.
3768    DescriptionString = "E-p:64:64:64-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3769                        "i64:64:64-f32:32:32-f64:64:64-f128:128:128-"
3770                        "v64:64:64-n32";
3771  }
3772  virtual void getTargetDefines(const LangOptions &Opts,
3773                                MacroBuilder &Builder) const {
3774    DefineStd(Builder, "mips", Opts);
3775    Builder.defineMacro("_mips");
3776    DefineStd(Builder, "MIPSEB", Opts);
3777    Builder.defineMacro("_MIPSEB");
3778    Builder.defineMacro("__REGISTER_PREFIX__", "");
3779    getArchDefines(Opts, Builder);
3780  }
3781};
3782
3783class Mips64ELTargetInfo : public Mips64TargetInfoBase {
3784  virtual void SetDescriptionString(const std::string &Name) {
3785    // Change DescriptionString only if ABI is n32.
3786    if (Name == "n32")
3787      DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3788                          "i64:64:64-f32:32:32-f64:64:64-f128:128:128"
3789                          "-v64:64:64-n32";
3790  }
3791public:
3792  Mips64ELTargetInfo(const std::string& triple) : Mips64TargetInfoBase(triple) {
3793    // Default ABI is n64.
3794    BigEndian = false;
3795    DescriptionString = "e-p:64:64:64-i1:8:8-i8:8:32-i16:16:32-i32:32:32-"
3796                        "i64:64:64-f32:32:32-f64:64:64-f128:128:128-"
3797                        "v64:64:64-n32";
3798  }
3799  virtual void getTargetDefines(const LangOptions &Opts,
3800                                MacroBuilder &Builder) const {
3801    DefineStd(Builder, "mips", Opts);
3802    Builder.defineMacro("_mips");
3803    DefineStd(Builder, "MIPSEL", Opts);
3804    Builder.defineMacro("_MIPSEL");
3805    Builder.defineMacro("__REGISTER_PREFIX__", "");
3806    getArchDefines(Opts, Builder);
3807  }
3808};
3809} // end anonymous namespace.
3810
3811namespace {
3812class PNaClTargetInfo : public TargetInfo {
3813public:
3814  PNaClTargetInfo(const std::string& triple) : TargetInfo(triple) {
3815    BigEndian = false;
3816    this->UserLabelPrefix = "";
3817    this->LongAlign = 32;
3818    this->LongWidth = 32;
3819    this->PointerAlign = 32;
3820    this->PointerWidth = 32;
3821    this->IntMaxType = TargetInfo::SignedLongLong;
3822    this->UIntMaxType = TargetInfo::UnsignedLongLong;
3823    this->Int64Type = TargetInfo::SignedLongLong;
3824    this->DoubleAlign = 64;
3825    this->LongDoubleWidth = 64;
3826    this->LongDoubleAlign = 64;
3827    this->SizeType = TargetInfo::UnsignedInt;
3828    this->PtrDiffType = TargetInfo::SignedInt;
3829    this->IntPtrType = TargetInfo::SignedInt;
3830    this->RegParmMax = 2;
3831    DescriptionString = "e-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-"
3832                        "f32:32:32-f64:64:64-p:32:32:32-v128:32:32";
3833  }
3834
3835  void getDefaultFeatures(llvm::StringMap<bool> &Features) const {
3836  }
3837  virtual void getArchDefines(const LangOptions &Opts,
3838                              MacroBuilder &Builder) const {
3839    Builder.defineMacro("__le32__");
3840    Builder.defineMacro("__pnacl__");
3841  }
3842  virtual void getTargetDefines(const LangOptions &Opts,
3843                                MacroBuilder &Builder) const {
3844    DefineStd(Builder, "unix", Opts);
3845    Builder.defineMacro("__ELF__");
3846    if (Opts.POSIXThreads)
3847      Builder.defineMacro("_REENTRANT");
3848    if (Opts.CPlusPlus)
3849      Builder.defineMacro("_GNU_SOURCE");
3850
3851    Builder.defineMacro("__LITTLE_ENDIAN__");
3852    Builder.defineMacro("__native_client__");
3853    getArchDefines(Opts, Builder);
3854  }
3855  virtual bool hasFeature(StringRef Feature) const {
3856    return Feature == "pnacl";
3857  }
3858  virtual void getTargetBuiltins(const Builtin::Info *&Records,
3859                                 unsigned &NumRecords) const {
3860  }
3861  virtual const char *getVAListDeclaration() const {
3862    return "typedef int __builtin_va_list[4];";
3863  }
3864  virtual void getGCCRegNames(const char * const *&Names,
3865                              unsigned &NumNames) const;
3866  virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
3867                                unsigned &NumAliases) const;
3868  virtual bool validateAsmConstraint(const char *&Name,
3869                                     TargetInfo::ConstraintInfo &Info) const {
3870    return false;
3871  }
3872
3873  virtual const char *getClobbers() const {
3874    return "";
3875  }
3876};
3877
3878void PNaClTargetInfo::getGCCRegNames(const char * const *&Names,
3879                                     unsigned &NumNames) const {
3880  Names = NULL;
3881  NumNames = 0;
3882}
3883
3884void PNaClTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
3885                                       unsigned &NumAliases) const {
3886  Aliases = NULL;
3887  NumAliases = 0;
3888}
3889} // end anonymous namespace.
3890
3891
3892//===----------------------------------------------------------------------===//
3893// Driver code
3894//===----------------------------------------------------------------------===//
3895
3896static TargetInfo *AllocateTarget(const std::string &T) {
3897  llvm::Triple Triple(T);
3898  llvm::Triple::OSType os = Triple.getOS();
3899
3900  switch (Triple.getArch()) {
3901  default:
3902    return NULL;
3903
3904  case llvm::Triple::hexagon:
3905    return new HexagonTargetInfo(T);
3906
3907  case llvm::Triple::arm:
3908  case llvm::Triple::thumb:
3909    if (Triple.isOSDarwin())
3910      return new DarwinARMTargetInfo(T);
3911
3912    switch (os) {
3913    case llvm::Triple::Linux:
3914      return new LinuxTargetInfo<ARMTargetInfo>(T);
3915    case llvm::Triple::FreeBSD:
3916      return new FreeBSDTargetInfo<ARMTargetInfo>(T);
3917    case llvm::Triple::NetBSD:
3918      return new NetBSDTargetInfo<ARMTargetInfo>(T);
3919    case llvm::Triple::RTEMS:
3920      return new RTEMSTargetInfo<ARMTargetInfo>(T);
3921    default:
3922      return new ARMTargetInfo(T);
3923    }
3924
3925  case llvm::Triple::msp430:
3926    return new MSP430TargetInfo(T);
3927
3928  case llvm::Triple::mips:
3929    switch (os) {
3930    case llvm::Triple::Linux:
3931      return new LinuxTargetInfo<Mips32EBTargetInfo>(T);
3932    case llvm::Triple::RTEMS:
3933      return new RTEMSTargetInfo<Mips32EBTargetInfo>(T);
3934    case llvm::Triple::FreeBSD:
3935      return new FreeBSDTargetInfo<Mips32EBTargetInfo>(T);
3936    case llvm::Triple::NetBSD:
3937      return new NetBSDTargetInfo<Mips32EBTargetInfo>(T);
3938    default:
3939      return new Mips32EBTargetInfo(T);
3940    }
3941
3942  case llvm::Triple::mipsel:
3943    switch (os) {
3944    case llvm::Triple::Linux:
3945      return new LinuxTargetInfo<Mips32ELTargetInfo>(T);
3946    case llvm::Triple::RTEMS:
3947      return new RTEMSTargetInfo<Mips32ELTargetInfo>(T);
3948    case llvm::Triple::FreeBSD:
3949      return new FreeBSDTargetInfo<Mips32ELTargetInfo>(T);
3950    case llvm::Triple::NetBSD:
3951      return new NetBSDTargetInfo<Mips32ELTargetInfo>(T);
3952    default:
3953      return new Mips32ELTargetInfo(T);
3954    }
3955
3956  case llvm::Triple::mips64:
3957    switch (os) {
3958    case llvm::Triple::Linux:
3959      return new LinuxTargetInfo<Mips64EBTargetInfo>(T);
3960    case llvm::Triple::RTEMS:
3961      return new RTEMSTargetInfo<Mips64EBTargetInfo>(T);
3962    case llvm::Triple::FreeBSD:
3963      return new FreeBSDTargetInfo<Mips64EBTargetInfo>(T);
3964    case llvm::Triple::NetBSD:
3965      return new NetBSDTargetInfo<Mips64EBTargetInfo>(T);
3966    default:
3967      return new Mips64EBTargetInfo(T);
3968    }
3969
3970  case llvm::Triple::mips64el:
3971    switch (os) {
3972    case llvm::Triple::Linux:
3973      return new LinuxTargetInfo<Mips64ELTargetInfo>(T);
3974    case llvm::Triple::RTEMS:
3975      return new RTEMSTargetInfo<Mips64ELTargetInfo>(T);
3976    case llvm::Triple::FreeBSD:
3977      return new FreeBSDTargetInfo<Mips64ELTargetInfo>(T);
3978    case llvm::Triple::NetBSD:
3979      return new NetBSDTargetInfo<Mips64ELTargetInfo>(T);
3980    default:
3981      return new Mips64ELTargetInfo(T);
3982    }
3983
3984  case llvm::Triple::le32:
3985    switch (os) {
3986      case llvm::Triple::NativeClient:
3987        return new PNaClTargetInfo(T);
3988      default:
3989        return NULL;
3990    }
3991
3992  case llvm::Triple::ppc:
3993    if (Triple.isOSDarwin())
3994      return new DarwinPPC32TargetInfo(T);
3995    switch (os) {
3996    case llvm::Triple::Linux:
3997      return new LinuxTargetInfo<PPC32TargetInfo>(T);
3998    case llvm::Triple::FreeBSD:
3999      return new FreeBSDTargetInfo<PPC32TargetInfo>(T);
4000    case llvm::Triple::NetBSD:
4001      return new NetBSDTargetInfo<PPC32TargetInfo>(T);
4002    case llvm::Triple::RTEMS:
4003      return new RTEMSTargetInfo<PPC32TargetInfo>(T);
4004    default:
4005      return new PPC32TargetInfo(T);
4006    }
4007
4008  case llvm::Triple::ppc64:
4009    if (Triple.isOSDarwin())
4010      return new DarwinPPC64TargetInfo(T);
4011    switch (os) {
4012    case llvm::Triple::Linux:
4013      return new LinuxTargetInfo<PPC64TargetInfo>(T);
4014    case llvm::Triple::Lv2:
4015      return new PS3PPUTargetInfo<PPC64TargetInfo>(T);
4016    case llvm::Triple::FreeBSD:
4017      return new FreeBSDTargetInfo<PPC64TargetInfo>(T);
4018    case llvm::Triple::NetBSD:
4019      return new NetBSDTargetInfo<PPC64TargetInfo>(T);
4020    default:
4021      return new PPC64TargetInfo(T);
4022    }
4023
4024  case llvm::Triple::ptx32:
4025    return new PTX32TargetInfo(T);
4026  case llvm::Triple::ptx64:
4027    return new PTX64TargetInfo(T);
4028
4029  case llvm::Triple::mblaze:
4030    return new MBlazeTargetInfo(T);
4031
4032  case llvm::Triple::sparc:
4033    switch (os) {
4034    case llvm::Triple::Linux:
4035      return new LinuxTargetInfo<SparcV8TargetInfo>(T);
4036    case llvm::Triple::AuroraUX:
4037      return new AuroraUXSparcV8TargetInfo(T);
4038    case llvm::Triple::Solaris:
4039      return new SolarisSparcV8TargetInfo(T);
4040    case llvm::Triple::NetBSD:
4041      return new NetBSDTargetInfo<SparcV8TargetInfo>(T);
4042    case llvm::Triple::RTEMS:
4043      return new RTEMSTargetInfo<SparcV8TargetInfo>(T);
4044    default:
4045      return new SparcV8TargetInfo(T);
4046    }
4047
4048  // FIXME: Need a real SPU target.
4049  case llvm::Triple::cellspu:
4050    return new PS3SPUTargetInfo<PPC64TargetInfo>(T);
4051
4052  case llvm::Triple::tce:
4053    return new TCETargetInfo(T);
4054
4055  case llvm::Triple::x86:
4056    if (Triple.isOSDarwin())
4057      return new DarwinI386TargetInfo(T);
4058
4059    switch (os) {
4060    case llvm::Triple::AuroraUX:
4061      return new AuroraUXTargetInfo<X86_32TargetInfo>(T);
4062    case llvm::Triple::Linux:
4063      return new LinuxTargetInfo<X86_32TargetInfo>(T);
4064    case llvm::Triple::DragonFly:
4065      return new DragonFlyBSDTargetInfo<X86_32TargetInfo>(T);
4066    case llvm::Triple::NetBSD:
4067      return new NetBSDI386TargetInfo(T);
4068    case llvm::Triple::OpenBSD:
4069      return new OpenBSDI386TargetInfo(T);
4070    case llvm::Triple::FreeBSD:
4071      return new FreeBSDTargetInfo<X86_32TargetInfo>(T);
4072    case llvm::Triple::Minix:
4073      return new MinixTargetInfo<X86_32TargetInfo>(T);
4074    case llvm::Triple::Solaris:
4075      return new SolarisTargetInfo<X86_32TargetInfo>(T);
4076    case llvm::Triple::Cygwin:
4077      return new CygwinX86_32TargetInfo(T);
4078    case llvm::Triple::MinGW32:
4079      return new MinGWX86_32TargetInfo(T);
4080    case llvm::Triple::Win32:
4081      return new VisualStudioWindowsX86_32TargetInfo(T);
4082    case llvm::Triple::Haiku:
4083      return new HaikuX86_32TargetInfo(T);
4084    case llvm::Triple::RTEMS:
4085      return new RTEMSX86_32TargetInfo(T);
4086    default:
4087      return new X86_32TargetInfo(T);
4088    }
4089
4090  case llvm::Triple::x86_64:
4091    if (Triple.isOSDarwin() || Triple.getEnvironment() == llvm::Triple::MachO)
4092      return new DarwinX86_64TargetInfo(T);
4093
4094    switch (os) {
4095    case llvm::Triple::AuroraUX:
4096      return new AuroraUXTargetInfo<X86_64TargetInfo>(T);
4097    case llvm::Triple::Linux:
4098      return new LinuxTargetInfo<X86_64TargetInfo>(T);
4099    case llvm::Triple::DragonFly:
4100      return new DragonFlyBSDTargetInfo<X86_64TargetInfo>(T);
4101    case llvm::Triple::NetBSD:
4102      return new NetBSDTargetInfo<X86_64TargetInfo>(T);
4103    case llvm::Triple::OpenBSD:
4104      return new OpenBSDX86_64TargetInfo(T);
4105    case llvm::Triple::FreeBSD:
4106      return new FreeBSDTargetInfo<X86_64TargetInfo>(T);
4107    case llvm::Triple::Solaris:
4108      return new SolarisTargetInfo<X86_64TargetInfo>(T);
4109    case llvm::Triple::MinGW32:
4110      return new MinGWX86_64TargetInfo(T);
4111    case llvm::Triple::Win32:   // This is what Triple.h supports now.
4112      return new VisualStudioWindowsX86_64TargetInfo(T);
4113    default:
4114      return new X86_64TargetInfo(T);
4115    }
4116  }
4117}
4118
4119/// CreateTargetInfo - Return the target info object for the specified target
4120/// triple.
4121TargetInfo *TargetInfo::CreateTargetInfo(DiagnosticsEngine &Diags,
4122                                         TargetOptions &Opts) {
4123  llvm::Triple Triple(Opts.Triple);
4124
4125  // Construct the target
4126  OwningPtr<TargetInfo> Target(AllocateTarget(Triple.str()));
4127  if (!Target) {
4128    Diags.Report(diag::err_target_unknown_triple) << Triple.str();
4129    return 0;
4130  }
4131
4132  // Set the target CPU if specified.
4133  if (!Opts.CPU.empty() && !Target->setCPU(Opts.CPU)) {
4134    Diags.Report(diag::err_target_unknown_cpu) << Opts.CPU;
4135    return 0;
4136  }
4137
4138  // Set the target ABI if specified.
4139  if (!Opts.ABI.empty() && !Target->setABI(Opts.ABI)) {
4140    Diags.Report(diag::err_target_unknown_abi) << Opts.ABI;
4141    return 0;
4142  }
4143
4144  // Set the target C++ ABI.
4145  if (!Opts.CXXABI.empty() && !Target->setCXXABI(Opts.CXXABI)) {
4146    Diags.Report(diag::err_target_unknown_cxxabi) << Opts.CXXABI;
4147    return 0;
4148  }
4149
4150  // Compute the default target features, we need the target to handle this
4151  // because features may have dependencies on one another.
4152  llvm::StringMap<bool> Features;
4153  Target->getDefaultFeatures(Features);
4154
4155  // Apply the user specified deltas.
4156  // First the enables.
4157  for (std::vector<std::string>::const_iterator it = Opts.Features.begin(),
4158         ie = Opts.Features.end(); it != ie; ++it) {
4159    const char *Name = it->c_str();
4160
4161    if (Name[0] != '+')
4162      continue;
4163
4164    // Apply the feature via the target.
4165    if (!Target->setFeatureEnabled(Features, Name + 1, true)) {
4166      Diags.Report(diag::err_target_invalid_feature) << Name;
4167      return 0;
4168    }
4169  }
4170
4171  // Then the disables.
4172  for (std::vector<std::string>::const_iterator it = Opts.Features.begin(),
4173         ie = Opts.Features.end(); it != ie; ++it) {
4174    const char *Name = it->c_str();
4175
4176    if (Name[0] == '+')
4177      continue;
4178
4179    // Apply the feature via the target.
4180    if (Name[0] != '-' ||
4181        !Target->setFeatureEnabled(Features, Name + 1, false)) {
4182      Diags.Report(diag::err_target_invalid_feature) << Name;
4183      return 0;
4184    }
4185  }
4186
4187  // Add the features to the compile options.
4188  //
4189  // FIXME: If we are completely confident that we have the right set, we only
4190  // need to pass the minuses.
4191  Opts.Features.clear();
4192  for (llvm::StringMap<bool>::const_iterator it = Features.begin(),
4193         ie = Features.end(); it != ie; ++it)
4194    Opts.Features.push_back((it->second ? "+" : "-") + it->first().str());
4195  Target->HandleTargetFeatures(Opts.Features);
4196
4197  return Target.take();
4198}
4199