1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
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 the TargetLibraryInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/Analysis/TargetLibraryInfo.h"
15 #include "llvm/ADT/Triple.h"
16 #include "llvm/Support/CommandLine.h"
17 using namespace llvm;
18 
19 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
20     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
21     cl::init(TargetLibraryInfoImpl::NoLibrary),
22     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
23                           "No vector functions library"),
24                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
25                           "Accelerate framework"),
26                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
27                           "Intel SVML library")));
28 
29 StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
30 #define TLI_DEFINE_STRING
31 #include "llvm/Analysis/TargetLibraryInfo.def"
32 };
33 
34 static bool hasSinCosPiStret(const Triple &T) {
35   // Only Darwin variants have _stret versions of combined trig functions.
36   if (!T.isOSDarwin())
37     return false;
38 
39   // The ABI is rather complicated on x86, so don't do anything special there.
40   if (T.getArch() == Triple::x86)
41     return false;
42 
43   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
44     return false;
45 
46   if (T.isiOS() && T.isOSVersionLT(7, 0))
47     return false;
48 
49   return true;
50 }
51 
52 /// initialize - Initialize the set of available library functions based on the
53 /// specified target triple.  This should be carefully written so that a missing
54 /// target triple gets a sane set of defaults.
55 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
56                        ArrayRef<StringRef> StandardNames) {
57   // Verify that the StandardNames array is in alphabetical order.
58   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
59                         [](StringRef LHS, StringRef RHS) {
60                           return LHS < RHS;
61                         }) &&
62          "TargetLibraryInfoImpl function names must be sorted");
63 
64   if (T.getArch() == Triple::r600 ||
65       T.getArch() == Triple::amdgcn) {
66     TLI.setUnavailable(LibFunc::ldexp);
67     TLI.setUnavailable(LibFunc::ldexpf);
68     TLI.setUnavailable(LibFunc::ldexpl);
69     TLI.setUnavailable(LibFunc::exp10);
70     TLI.setUnavailable(LibFunc::exp10f);
71     TLI.setUnavailable(LibFunc::exp10l);
72     TLI.setUnavailable(LibFunc::log10);
73     TLI.setUnavailable(LibFunc::log10f);
74     TLI.setUnavailable(LibFunc::log10l);
75   }
76 
77   // There are no library implementations of mempcy and memset for AMD gpus and
78   // these can be difficult to lower in the backend.
79   if (T.getArch() == Triple::r600 ||
80       T.getArch() == Triple::amdgcn) {
81     TLI.setUnavailable(LibFunc::memcpy);
82     TLI.setUnavailable(LibFunc::memset);
83     TLI.setUnavailable(LibFunc::memset_pattern16);
84     return;
85   }
86 
87   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
88   // All versions of watchOS support it.
89   if (T.isMacOSX()) {
90     if (T.isMacOSXVersionLT(10, 5))
91       TLI.setUnavailable(LibFunc::memset_pattern16);
92   } else if (T.isiOS()) {
93     if (T.isOSVersionLT(3, 0))
94       TLI.setUnavailable(LibFunc::memset_pattern16);
95   } else if (!T.isWatchOS()) {
96     TLI.setUnavailable(LibFunc::memset_pattern16);
97   }
98 
99   if (!hasSinCosPiStret(T)) {
100     TLI.setUnavailable(LibFunc::sinpi);
101     TLI.setUnavailable(LibFunc::sinpif);
102     TLI.setUnavailable(LibFunc::cospi);
103     TLI.setUnavailable(LibFunc::cospif);
104     TLI.setUnavailable(LibFunc::sincospi_stret);
105     TLI.setUnavailable(LibFunc::sincospif_stret);
106   }
107 
108   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
109       !T.isMacOSXVersionLT(10, 7)) {
110     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
111     // we don't care about) have two versions; on recent OSX, the one we want
112     // has a $UNIX2003 suffix. The two implementations are identical except
113     // for the return value in some edge cases.  However, we don't want to
114     // generate code that depends on the old symbols.
115     TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
116     TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
117   }
118 
119   // iprintf and friends are only available on XCore and TCE.
120   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
121     TLI.setUnavailable(LibFunc::iprintf);
122     TLI.setUnavailable(LibFunc::siprintf);
123     TLI.setUnavailable(LibFunc::fiprintf);
124   }
125 
126   if (T.isOSWindows() && !T.isOSCygMing()) {
127     // Win32 does not support long double
128     TLI.setUnavailable(LibFunc::acosl);
129     TLI.setUnavailable(LibFunc::asinl);
130     TLI.setUnavailable(LibFunc::atanl);
131     TLI.setUnavailable(LibFunc::atan2l);
132     TLI.setUnavailable(LibFunc::ceill);
133     TLI.setUnavailable(LibFunc::copysignl);
134     TLI.setUnavailable(LibFunc::cosl);
135     TLI.setUnavailable(LibFunc::coshl);
136     TLI.setUnavailable(LibFunc::expl);
137     TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
138     TLI.setUnavailable(LibFunc::fabsl);
139     TLI.setUnavailable(LibFunc::floorl);
140     TLI.setUnavailable(LibFunc::fmaxl);
141     TLI.setUnavailable(LibFunc::fminl);
142     TLI.setUnavailable(LibFunc::fmodl);
143     TLI.setUnavailable(LibFunc::frexpl);
144     TLI.setUnavailable(LibFunc::ldexpf);
145     TLI.setUnavailable(LibFunc::ldexpl);
146     TLI.setUnavailable(LibFunc::logl);
147     TLI.setUnavailable(LibFunc::modfl);
148     TLI.setUnavailable(LibFunc::powl);
149     TLI.setUnavailable(LibFunc::sinl);
150     TLI.setUnavailable(LibFunc::sinhl);
151     TLI.setUnavailable(LibFunc::sqrtl);
152     TLI.setUnavailable(LibFunc::tanl);
153     TLI.setUnavailable(LibFunc::tanhl);
154 
155     // Win32 only has C89 math
156     TLI.setUnavailable(LibFunc::acosh);
157     TLI.setUnavailable(LibFunc::acoshf);
158     TLI.setUnavailable(LibFunc::acoshl);
159     TLI.setUnavailable(LibFunc::asinh);
160     TLI.setUnavailable(LibFunc::asinhf);
161     TLI.setUnavailable(LibFunc::asinhl);
162     TLI.setUnavailable(LibFunc::atanh);
163     TLI.setUnavailable(LibFunc::atanhf);
164     TLI.setUnavailable(LibFunc::atanhl);
165     TLI.setUnavailable(LibFunc::cbrt);
166     TLI.setUnavailable(LibFunc::cbrtf);
167     TLI.setUnavailable(LibFunc::cbrtl);
168     TLI.setUnavailable(LibFunc::exp2);
169     TLI.setUnavailable(LibFunc::exp2f);
170     TLI.setUnavailable(LibFunc::exp2l);
171     TLI.setUnavailable(LibFunc::expm1);
172     TLI.setUnavailable(LibFunc::expm1f);
173     TLI.setUnavailable(LibFunc::expm1l);
174     TLI.setUnavailable(LibFunc::log2);
175     TLI.setUnavailable(LibFunc::log2f);
176     TLI.setUnavailable(LibFunc::log2l);
177     TLI.setUnavailable(LibFunc::log1p);
178     TLI.setUnavailable(LibFunc::log1pf);
179     TLI.setUnavailable(LibFunc::log1pl);
180     TLI.setUnavailable(LibFunc::logb);
181     TLI.setUnavailable(LibFunc::logbf);
182     TLI.setUnavailable(LibFunc::logbl);
183     TLI.setUnavailable(LibFunc::nearbyint);
184     TLI.setUnavailable(LibFunc::nearbyintf);
185     TLI.setUnavailable(LibFunc::nearbyintl);
186     TLI.setUnavailable(LibFunc::rint);
187     TLI.setUnavailable(LibFunc::rintf);
188     TLI.setUnavailable(LibFunc::rintl);
189     TLI.setUnavailable(LibFunc::round);
190     TLI.setUnavailable(LibFunc::roundf);
191     TLI.setUnavailable(LibFunc::roundl);
192     TLI.setUnavailable(LibFunc::trunc);
193     TLI.setUnavailable(LibFunc::truncf);
194     TLI.setUnavailable(LibFunc::truncl);
195 
196     // Win32 provides some C99 math with mangled names
197     TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
198 
199     if (T.getArch() == Triple::x86) {
200       // Win32 on x86 implements single-precision math functions as macros
201       TLI.setUnavailable(LibFunc::acosf);
202       TLI.setUnavailable(LibFunc::asinf);
203       TLI.setUnavailable(LibFunc::atanf);
204       TLI.setUnavailable(LibFunc::atan2f);
205       TLI.setUnavailable(LibFunc::ceilf);
206       TLI.setUnavailable(LibFunc::copysignf);
207       TLI.setUnavailable(LibFunc::cosf);
208       TLI.setUnavailable(LibFunc::coshf);
209       TLI.setUnavailable(LibFunc::expf);
210       TLI.setUnavailable(LibFunc::floorf);
211       TLI.setUnavailable(LibFunc::fminf);
212       TLI.setUnavailable(LibFunc::fmaxf);
213       TLI.setUnavailable(LibFunc::fmodf);
214       TLI.setUnavailable(LibFunc::logf);
215       TLI.setUnavailable(LibFunc::log10f);
216       TLI.setUnavailable(LibFunc::modff);
217       TLI.setUnavailable(LibFunc::powf);
218       TLI.setUnavailable(LibFunc::sinf);
219       TLI.setUnavailable(LibFunc::sinhf);
220       TLI.setUnavailable(LibFunc::sqrtf);
221       TLI.setUnavailable(LibFunc::tanf);
222       TLI.setUnavailable(LibFunc::tanhf);
223     }
224 
225     // Win32 does *not* provide provide these functions, but they are
226     // generally available on POSIX-compliant systems:
227     TLI.setUnavailable(LibFunc::access);
228     TLI.setUnavailable(LibFunc::bcmp);
229     TLI.setUnavailable(LibFunc::bcopy);
230     TLI.setUnavailable(LibFunc::bzero);
231     TLI.setUnavailable(LibFunc::chmod);
232     TLI.setUnavailable(LibFunc::chown);
233     TLI.setUnavailable(LibFunc::closedir);
234     TLI.setUnavailable(LibFunc::ctermid);
235     TLI.setUnavailable(LibFunc::fdopen);
236     TLI.setUnavailable(LibFunc::ffs);
237     TLI.setUnavailable(LibFunc::fileno);
238     TLI.setUnavailable(LibFunc::flockfile);
239     TLI.setUnavailable(LibFunc::fseeko);
240     TLI.setUnavailable(LibFunc::fstat);
241     TLI.setUnavailable(LibFunc::fstatvfs);
242     TLI.setUnavailable(LibFunc::ftello);
243     TLI.setUnavailable(LibFunc::ftrylockfile);
244     TLI.setUnavailable(LibFunc::funlockfile);
245     TLI.setUnavailable(LibFunc::getc_unlocked);
246     TLI.setUnavailable(LibFunc::getitimer);
247     TLI.setUnavailable(LibFunc::getlogin_r);
248     TLI.setUnavailable(LibFunc::getpwnam);
249     TLI.setUnavailable(LibFunc::gettimeofday);
250     TLI.setUnavailable(LibFunc::htonl);
251     TLI.setUnavailable(LibFunc::htons);
252     TLI.setUnavailable(LibFunc::lchown);
253     TLI.setUnavailable(LibFunc::lstat);
254     TLI.setUnavailable(LibFunc::memccpy);
255     TLI.setUnavailable(LibFunc::mkdir);
256     TLI.setUnavailable(LibFunc::ntohl);
257     TLI.setUnavailable(LibFunc::ntohs);
258     TLI.setUnavailable(LibFunc::open);
259     TLI.setUnavailable(LibFunc::opendir);
260     TLI.setUnavailable(LibFunc::pclose);
261     TLI.setUnavailable(LibFunc::popen);
262     TLI.setUnavailable(LibFunc::pread);
263     TLI.setUnavailable(LibFunc::pwrite);
264     TLI.setUnavailable(LibFunc::read);
265     TLI.setUnavailable(LibFunc::readlink);
266     TLI.setUnavailable(LibFunc::realpath);
267     TLI.setUnavailable(LibFunc::rmdir);
268     TLI.setUnavailable(LibFunc::setitimer);
269     TLI.setUnavailable(LibFunc::stat);
270     TLI.setUnavailable(LibFunc::statvfs);
271     TLI.setUnavailable(LibFunc::stpcpy);
272     TLI.setUnavailable(LibFunc::stpncpy);
273     TLI.setUnavailable(LibFunc::strcasecmp);
274     TLI.setUnavailable(LibFunc::strncasecmp);
275     TLI.setUnavailable(LibFunc::times);
276     TLI.setUnavailable(LibFunc::uname);
277     TLI.setUnavailable(LibFunc::unlink);
278     TLI.setUnavailable(LibFunc::unsetenv);
279     TLI.setUnavailable(LibFunc::utime);
280     TLI.setUnavailable(LibFunc::utimes);
281     TLI.setUnavailable(LibFunc::write);
282 
283     // Win32 does *not* provide provide these functions, but they are
284     // specified by C99:
285     TLI.setUnavailable(LibFunc::atoll);
286     TLI.setUnavailable(LibFunc::frexpf);
287     TLI.setUnavailable(LibFunc::llabs);
288   }
289 
290   switch (T.getOS()) {
291   case Triple::MacOSX:
292     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
293     // and their names are __exp10 and __exp10f. exp10l is not available on
294     // OS X or iOS.
295     TLI.setUnavailable(LibFunc::exp10l);
296     if (T.isMacOSXVersionLT(10, 9)) {
297       TLI.setUnavailable(LibFunc::exp10);
298       TLI.setUnavailable(LibFunc::exp10f);
299     } else {
300       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
301       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
302     }
303     break;
304   case Triple::IOS:
305   case Triple::TvOS:
306   case Triple::WatchOS:
307     TLI.setUnavailable(LibFunc::exp10l);
308     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
309                            (T.isOSVersionLT(9, 0) &&
310                             (T.getArch() == Triple::x86 ||
311                              T.getArch() == Triple::x86_64)))) {
312       TLI.setUnavailable(LibFunc::exp10);
313       TLI.setUnavailable(LibFunc::exp10f);
314     } else {
315       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
316       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
317     }
318     break;
319   case Triple::Linux:
320     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
321     // buggy prior to glibc version 2.18. Until this version is widely deployed
322     // or we have a reasonable detection strategy, we cannot use exp10 reliably
323     // on Linux.
324     //
325     // Fall through to disable all of them.
326     LLVM_FALLTHROUGH;
327   default:
328     TLI.setUnavailable(LibFunc::exp10);
329     TLI.setUnavailable(LibFunc::exp10f);
330     TLI.setUnavailable(LibFunc::exp10l);
331   }
332 
333   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
334   // Linux (GLIBC):
335   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
336   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
337   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
338   switch (T.getOS()) {
339   case Triple::Darwin:
340   case Triple::MacOSX:
341   case Triple::IOS:
342   case Triple::TvOS:
343   case Triple::WatchOS:
344   case Triple::FreeBSD:
345   case Triple::Linux:
346     break;
347   default:
348     TLI.setUnavailable(LibFunc::ffsl);
349   }
350 
351   // ffsll is available on at least FreeBSD and Linux (GLIBC):
352   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
353   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
354   switch (T.getOS()) {
355   case Triple::Darwin:
356   case Triple::MacOSX:
357   case Triple::IOS:
358   case Triple::TvOS:
359   case Triple::WatchOS:
360   case Triple::FreeBSD:
361   case Triple::Linux:
362     break;
363   default:
364     TLI.setUnavailable(LibFunc::ffsll);
365   }
366 
367   // The following functions are available on at least FreeBSD:
368   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
369   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
370   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
371   if (!T.isOSFreeBSD()) {
372     TLI.setUnavailable(LibFunc::fls);
373     TLI.setUnavailable(LibFunc::flsl);
374     TLI.setUnavailable(LibFunc::flsll);
375   }
376 
377   // The following functions are available on at least Linux:
378   if (!T.isOSLinux()) {
379     TLI.setUnavailable(LibFunc::dunder_strdup);
380     TLI.setUnavailable(LibFunc::dunder_strtok_r);
381     TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
382     TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
383     TLI.setUnavailable(LibFunc::under_IO_getc);
384     TLI.setUnavailable(LibFunc::under_IO_putc);
385     TLI.setUnavailable(LibFunc::memalign);
386     TLI.setUnavailable(LibFunc::fopen64);
387     TLI.setUnavailable(LibFunc::fseeko64);
388     TLI.setUnavailable(LibFunc::fstat64);
389     TLI.setUnavailable(LibFunc::fstatvfs64);
390     TLI.setUnavailable(LibFunc::ftello64);
391     TLI.setUnavailable(LibFunc::lstat64);
392     TLI.setUnavailable(LibFunc::open64);
393     TLI.setUnavailable(LibFunc::stat64);
394     TLI.setUnavailable(LibFunc::statvfs64);
395     TLI.setUnavailable(LibFunc::tmpfile64);
396   }
397 
398   // As currently implemented in clang, NVPTX code has no standard library to
399   // speak of.  Headers provide a standard-ish library implementation, but many
400   // of the signatures are wrong -- for example, many libm functions are not
401   // extern "C".
402   //
403   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
404   // but only used functions are provided to llvm.  Moreover, most of the
405   // functions in libdevice don't map precisely to standard library functions.
406   //
407   // FIXME: Having no standard library prevents e.g. many fastmath
408   // optimizations, so this situation should be fixed.
409   if (T.isNVPTX()) {
410     TLI.disableAllFunctions();
411     TLI.setAvailable(LibFunc::nvvm_reflect);
412   } else {
413     TLI.setUnavailable(LibFunc::nvvm_reflect);
414   }
415 
416   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
417 }
418 
419 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
420   // Default to everything being available.
421   memset(AvailableArray, -1, sizeof(AvailableArray));
422 
423   initialize(*this, Triple(), StandardNames);
424 }
425 
426 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
427   // Default to everything being available.
428   memset(AvailableArray, -1, sizeof(AvailableArray));
429 
430   initialize(*this, T, StandardNames);
431 }
432 
433 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
434     : CustomNames(TLI.CustomNames) {
435   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
436   VectorDescs = TLI.VectorDescs;
437   ScalarDescs = TLI.ScalarDescs;
438 }
439 
440 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
441     : CustomNames(std::move(TLI.CustomNames)) {
442   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
443             AvailableArray);
444   VectorDescs = TLI.VectorDescs;
445   ScalarDescs = TLI.ScalarDescs;
446 }
447 
448 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
449   CustomNames = TLI.CustomNames;
450   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
451   return *this;
452 }
453 
454 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
455   CustomNames = std::move(TLI.CustomNames);
456   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
457             AvailableArray);
458   return *this;
459 }
460 
461 static StringRef sanitizeFunctionName(StringRef funcName) {
462   // Filter out empty names and names containing null bytes, those can't be in
463   // our table.
464   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
465     return StringRef();
466 
467   // Check for \01 prefix that is used to mangle __asm declarations and
468   // strip it if present.
469   return GlobalValue::getRealLinkageName(funcName);
470 }
471 
472 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
473                                        LibFunc::Func &F) const {
474   StringRef const *Start = &StandardNames[0];
475   StringRef const *End = &StandardNames[LibFunc::NumLibFuncs];
476 
477   funcName = sanitizeFunctionName(funcName);
478   if (funcName.empty())
479     return false;
480 
481   StringRef const *I = std::lower_bound(
482       Start, End, funcName, [](StringRef LHS, StringRef RHS) {
483         return LHS < RHS;
484       });
485   if (I != End && *I == funcName) {
486     F = (LibFunc::Func)(I - Start);
487     return true;
488   }
489   return false;
490 }
491 
492 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
493                                                    LibFunc::Func F,
494                                                    const DataLayout *DL) const {
495   LLVMContext &Ctx = FTy.getContext();
496   Type *PCharTy = Type::getInt8PtrTy(Ctx);
497   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
498   auto IsSizeTTy = [SizeTTy](Type *Ty) {
499     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
500   };
501   unsigned NumParams = FTy.getNumParams();
502 
503   switch (F) {
504   case LibFunc::strlen:
505     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
506             FTy.getReturnType()->isIntegerTy());
507 
508   case LibFunc::strchr:
509   case LibFunc::strrchr:
510     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
511             FTy.getParamType(0) == FTy.getReturnType() &&
512             FTy.getParamType(1)->isIntegerTy());
513 
514   case LibFunc::strtol:
515   case LibFunc::strtod:
516   case LibFunc::strtof:
517   case LibFunc::strtoul:
518   case LibFunc::strtoll:
519   case LibFunc::strtold:
520   case LibFunc::strtoull:
521     return ((NumParams == 2 || NumParams == 3) &&
522             FTy.getParamType(0)->isPointerTy() &&
523             FTy.getParamType(1)->isPointerTy());
524   case LibFunc::strcat:
525     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
526             FTy.getParamType(0) == FTy.getReturnType() &&
527             FTy.getParamType(1) == FTy.getReturnType());
528 
529   case LibFunc::strncat:
530     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
531             FTy.getParamType(0) == FTy.getReturnType() &&
532             FTy.getParamType(1) == FTy.getReturnType() &&
533             FTy.getParamType(2)->isIntegerTy());
534 
535   case LibFunc::strcpy_chk:
536   case LibFunc::stpcpy_chk:
537     --NumParams;
538     if (!IsSizeTTy(FTy.getParamType(NumParams)))
539       return false;
540     LLVM_FALLTHROUGH;
541   case LibFunc::strcpy:
542   case LibFunc::stpcpy:
543     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
544             FTy.getParamType(0) == FTy.getParamType(1) &&
545             FTy.getParamType(0) == PCharTy);
546 
547   case LibFunc::strncpy_chk:
548   case LibFunc::stpncpy_chk:
549     --NumParams;
550     if (!IsSizeTTy(FTy.getParamType(NumParams)))
551       return false;
552     LLVM_FALLTHROUGH;
553   case LibFunc::strncpy:
554   case LibFunc::stpncpy:
555     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
556             FTy.getParamType(0) == FTy.getParamType(1) &&
557             FTy.getParamType(0) == PCharTy &&
558             FTy.getParamType(2)->isIntegerTy());
559 
560   case LibFunc::strxfrm:
561     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
562             FTy.getParamType(1)->isPointerTy());
563 
564   case LibFunc::strcmp:
565     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
566             FTy.getParamType(0)->isPointerTy() &&
567             FTy.getParamType(0) == FTy.getParamType(1));
568 
569   case LibFunc::strncmp:
570     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
571             FTy.getParamType(0)->isPointerTy() &&
572             FTy.getParamType(0) == FTy.getParamType(1) &&
573             FTy.getParamType(2)->isIntegerTy());
574 
575   case LibFunc::strspn:
576   case LibFunc::strcspn:
577     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
578             FTy.getParamType(0) == FTy.getParamType(1) &&
579             FTy.getReturnType()->isIntegerTy());
580 
581   case LibFunc::strcoll:
582   case LibFunc::strcasecmp:
583   case LibFunc::strncasecmp:
584     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
585             FTy.getParamType(1)->isPointerTy());
586 
587   case LibFunc::strstr:
588     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
589             FTy.getParamType(0)->isPointerTy() &&
590             FTy.getParamType(1)->isPointerTy());
591 
592   case LibFunc::strpbrk:
593     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
594             FTy.getReturnType() == FTy.getParamType(0) &&
595             FTy.getParamType(0) == FTy.getParamType(1));
596 
597   case LibFunc::strtok:
598   case LibFunc::strtok_r:
599     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
600   case LibFunc::scanf:
601   case LibFunc::setbuf:
602   case LibFunc::setvbuf:
603     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
604   case LibFunc::strdup:
605   case LibFunc::strndup:
606     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
607             FTy.getParamType(0)->isPointerTy());
608   case LibFunc::sscanf:
609   case LibFunc::stat:
610   case LibFunc::statvfs:
611   case LibFunc::sprintf:
612     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
613             FTy.getParamType(1)->isPointerTy());
614   case LibFunc::snprintf:
615     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
616             FTy.getParamType(2)->isPointerTy());
617   case LibFunc::setitimer:
618     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
619             FTy.getParamType(2)->isPointerTy());
620   case LibFunc::system:
621     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
622   case LibFunc::malloc:
623     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
624   case LibFunc::memcmp:
625     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
626             FTy.getParamType(1)->isPointerTy() &&
627             FTy.getReturnType()->isIntegerTy(32));
628 
629   case LibFunc::memchr:
630   case LibFunc::memrchr:
631     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
632             FTy.getParamType(1)->isIntegerTy(32) &&
633             FTy.getParamType(2)->isIntegerTy() &&
634             FTy.getReturnType()->isPointerTy());
635   case LibFunc::modf:
636   case LibFunc::modff:
637   case LibFunc::modfl:
638     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
639 
640   case LibFunc::memcpy_chk:
641   case LibFunc::memmove_chk:
642     --NumParams;
643     if (!IsSizeTTy(FTy.getParamType(NumParams)))
644       return false;
645     LLVM_FALLTHROUGH;
646   case LibFunc::memcpy:
647   case LibFunc::mempcpy:
648   case LibFunc::memmove:
649     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
650             FTy.getParamType(0)->isPointerTy() &&
651             FTy.getParamType(1)->isPointerTy() &&
652             IsSizeTTy(FTy.getParamType(2)));
653 
654   case LibFunc::memset_chk:
655     --NumParams;
656     if (!IsSizeTTy(FTy.getParamType(NumParams)))
657       return false;
658     LLVM_FALLTHROUGH;
659   case LibFunc::memset:
660     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
661             FTy.getParamType(0)->isPointerTy() &&
662             FTy.getParamType(1)->isIntegerTy() &&
663             IsSizeTTy(FTy.getParamType(2)));
664 
665   case LibFunc::memccpy:
666     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
667   case LibFunc::memalign:
668     return (FTy.getReturnType()->isPointerTy());
669   case LibFunc::realloc:
670     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
671             FTy.getReturnType()->isPointerTy());
672   case LibFunc::read:
673     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
674   case LibFunc::rewind:
675   case LibFunc::rmdir:
676   case LibFunc::remove:
677   case LibFunc::realpath:
678     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
679   case LibFunc::rename:
680     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
681             FTy.getParamType(1)->isPointerTy());
682   case LibFunc::readlink:
683     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
684             FTy.getParamType(1)->isPointerTy());
685   case LibFunc::write:
686     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
687   case LibFunc::bcopy:
688   case LibFunc::bcmp:
689     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
690             FTy.getParamType(1)->isPointerTy());
691   case LibFunc::bzero:
692     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
693   case LibFunc::calloc:
694     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
695 
696   case LibFunc::atof:
697   case LibFunc::atoi:
698   case LibFunc::atol:
699   case LibFunc::atoll:
700   case LibFunc::ferror:
701   case LibFunc::getenv:
702   case LibFunc::getpwnam:
703   case LibFunc::pclose:
704   case LibFunc::perror:
705   case LibFunc::printf:
706   case LibFunc::puts:
707   case LibFunc::uname:
708   case LibFunc::under_IO_getc:
709   case LibFunc::unlink:
710   case LibFunc::unsetenv:
711     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
712 
713   case LibFunc::chmod:
714   case LibFunc::chown:
715   case LibFunc::clearerr:
716   case LibFunc::closedir:
717   case LibFunc::ctermid:
718   case LibFunc::fclose:
719   case LibFunc::feof:
720   case LibFunc::fflush:
721   case LibFunc::fgetc:
722   case LibFunc::fileno:
723   case LibFunc::flockfile:
724   case LibFunc::free:
725   case LibFunc::fseek:
726   case LibFunc::fseeko64:
727   case LibFunc::fseeko:
728   case LibFunc::fsetpos:
729   case LibFunc::ftell:
730   case LibFunc::ftello64:
731   case LibFunc::ftello:
732   case LibFunc::ftrylockfile:
733   case LibFunc::funlockfile:
734   case LibFunc::getc:
735   case LibFunc::getc_unlocked:
736   case LibFunc::getlogin_r:
737   case LibFunc::mkdir:
738   case LibFunc::mktime:
739   case LibFunc::times:
740     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
741 
742   case LibFunc::access:
743     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
744   case LibFunc::fopen:
745     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
746             FTy.getParamType(0)->isPointerTy() &&
747             FTy.getParamType(1)->isPointerTy());
748   case LibFunc::fdopen:
749     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
750             FTy.getParamType(1)->isPointerTy());
751   case LibFunc::fputc:
752   case LibFunc::fstat:
753   case LibFunc::frexp:
754   case LibFunc::frexpf:
755   case LibFunc::frexpl:
756   case LibFunc::fstatvfs:
757     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
758   case LibFunc::fgets:
759     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
760             FTy.getParamType(2)->isPointerTy());
761   case LibFunc::fread:
762     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
763             FTy.getParamType(3)->isPointerTy());
764   case LibFunc::fwrite:
765     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
766             FTy.getParamType(0)->isPointerTy() &&
767             FTy.getParamType(1)->isIntegerTy() &&
768             FTy.getParamType(2)->isIntegerTy() &&
769             FTy.getParamType(3)->isPointerTy());
770   case LibFunc::fputs:
771     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
772             FTy.getParamType(1)->isPointerTy());
773   case LibFunc::fscanf:
774   case LibFunc::fprintf:
775     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
776             FTy.getParamType(1)->isPointerTy());
777   case LibFunc::fgetpos:
778     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
779             FTy.getParamType(1)->isPointerTy());
780   case LibFunc::gets:
781   case LibFunc::getchar:
782   case LibFunc::getitimer:
783     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
784   case LibFunc::ungetc:
785     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
786   case LibFunc::utime:
787   case LibFunc::utimes:
788     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
789             FTy.getParamType(1)->isPointerTy());
790   case LibFunc::putc:
791     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
792   case LibFunc::pread:
793   case LibFunc::pwrite:
794     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
795   case LibFunc::popen:
796     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
797             FTy.getParamType(0)->isPointerTy() &&
798             FTy.getParamType(1)->isPointerTy());
799   case LibFunc::vscanf:
800     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
801   case LibFunc::vsscanf:
802     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
803             FTy.getParamType(2)->isPointerTy());
804   case LibFunc::vfscanf:
805     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
806             FTy.getParamType(2)->isPointerTy());
807   case LibFunc::valloc:
808     return (FTy.getReturnType()->isPointerTy());
809   case LibFunc::vprintf:
810     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
811   case LibFunc::vfprintf:
812   case LibFunc::vsprintf:
813     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
814             FTy.getParamType(1)->isPointerTy());
815   case LibFunc::vsnprintf:
816     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
817             FTy.getParamType(2)->isPointerTy());
818   case LibFunc::open:
819     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
820   case LibFunc::opendir:
821     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
822             FTy.getParamType(0)->isPointerTy());
823   case LibFunc::tmpfile:
824     return (FTy.getReturnType()->isPointerTy());
825   case LibFunc::htonl:
826   case LibFunc::htons:
827   case LibFunc::ntohl:
828   case LibFunc::ntohs:
829   case LibFunc::lstat:
830     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
831             FTy.getParamType(1)->isPointerTy());
832   case LibFunc::lchown:
833     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
834   case LibFunc::qsort:
835     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
836   case LibFunc::dunder_strdup:
837   case LibFunc::dunder_strndup:
838     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
839             FTy.getParamType(0)->isPointerTy());
840   case LibFunc::dunder_strtok_r:
841     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
842   case LibFunc::under_IO_putc:
843     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
844   case LibFunc::dunder_isoc99_scanf:
845     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
846   case LibFunc::stat64:
847   case LibFunc::lstat64:
848   case LibFunc::statvfs64:
849     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
850             FTy.getParamType(1)->isPointerTy());
851   case LibFunc::dunder_isoc99_sscanf:
852     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
853             FTy.getParamType(1)->isPointerTy());
854   case LibFunc::fopen64:
855     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
856             FTy.getParamType(0)->isPointerTy() &&
857             FTy.getParamType(1)->isPointerTy());
858   case LibFunc::tmpfile64:
859     return (FTy.getReturnType()->isPointerTy());
860   case LibFunc::fstat64:
861   case LibFunc::fstatvfs64:
862     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
863   case LibFunc::open64:
864     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
865   case LibFunc::gettimeofday:
866     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
867             FTy.getParamType(1)->isPointerTy());
868 
869   case LibFunc::Znwj:                    // new(unsigned int);
870   case LibFunc::Znwm:                    // new(unsigned long);
871   case LibFunc::Znaj:                    // new[](unsigned int);
872   case LibFunc::Znam:                    // new[](unsigned long);
873   case LibFunc::msvc_new_int:            // new(unsigned int);
874   case LibFunc::msvc_new_longlong:       // new(unsigned long long);
875   case LibFunc::msvc_new_array_int:      // new[](unsigned int);
876   case LibFunc::msvc_new_array_longlong: // new[](unsigned long long);
877     return (NumParams == 1);
878 
879   case LibFunc::memset_pattern16:
880     return (!FTy.isVarArg() && NumParams == 3 &&
881             isa<PointerType>(FTy.getParamType(0)) &&
882             isa<PointerType>(FTy.getParamType(1)) &&
883             isa<IntegerType>(FTy.getParamType(2)));
884 
885   // int __nvvm_reflect(const char *);
886   case LibFunc::nvvm_reflect:
887     return (NumParams == 1 && isa<PointerType>(FTy.getParamType(0)));
888 
889   case LibFunc::sin:
890   case LibFunc::sinf:
891   case LibFunc::sinl:
892   case LibFunc::cos:
893   case LibFunc::cosf:
894   case LibFunc::cosl:
895   case LibFunc::tan:
896   case LibFunc::tanf:
897   case LibFunc::tanl:
898   case LibFunc::exp:
899   case LibFunc::expf:
900   case LibFunc::expl:
901   case LibFunc::exp2:
902   case LibFunc::exp2f:
903   case LibFunc::exp2l:
904   case LibFunc::log:
905   case LibFunc::logf:
906   case LibFunc::logl:
907   case LibFunc::log10:
908   case LibFunc::log10f:
909   case LibFunc::log10l:
910   case LibFunc::log2:
911   case LibFunc::log2f:
912   case LibFunc::log2l:
913   case LibFunc::fabs:
914   case LibFunc::fabsf:
915   case LibFunc::fabsl:
916   case LibFunc::floor:
917   case LibFunc::floorf:
918   case LibFunc::floorl:
919   case LibFunc::ceil:
920   case LibFunc::ceilf:
921   case LibFunc::ceill:
922   case LibFunc::trunc:
923   case LibFunc::truncf:
924   case LibFunc::truncl:
925   case LibFunc::rint:
926   case LibFunc::rintf:
927   case LibFunc::rintl:
928   case LibFunc::nearbyint:
929   case LibFunc::nearbyintf:
930   case LibFunc::nearbyintl:
931   case LibFunc::round:
932   case LibFunc::roundf:
933   case LibFunc::roundl:
934   case LibFunc::sqrt:
935   case LibFunc::sqrtf:
936   case LibFunc::sqrtl:
937     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
938             FTy.getReturnType() == FTy.getParamType(0));
939 
940   case LibFunc::fmin:
941   case LibFunc::fminf:
942   case LibFunc::fminl:
943   case LibFunc::fmax:
944   case LibFunc::fmaxf:
945   case LibFunc::fmaxl:
946   case LibFunc::copysign:
947   case LibFunc::copysignf:
948   case LibFunc::copysignl:
949   case LibFunc::pow:
950   case LibFunc::powf:
951   case LibFunc::powl:
952     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
953             FTy.getReturnType() == FTy.getParamType(0) &&
954             FTy.getReturnType() == FTy.getParamType(1));
955 
956   case LibFunc::ffs:
957   case LibFunc::ffsl:
958   case LibFunc::ffsll:
959     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
960             FTy.getParamType(0)->isIntegerTy());
961 
962   case LibFunc::isdigit:
963   case LibFunc::isascii:
964   case LibFunc::toascii:
965     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
966             FTy.getReturnType() == FTy.getParamType(0));
967 
968   case LibFunc::fls:
969   case LibFunc::flsl:
970   case LibFunc::flsll:
971   case LibFunc::abs:
972   case LibFunc::labs:
973   case LibFunc::llabs:
974     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
975             FTy.getReturnType() == FTy.getParamType(0));
976 
977   case LibFunc::cxa_atexit:
978     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
979             FTy.getParamType(0)->isPointerTy() &&
980             FTy.getParamType(1)->isPointerTy() &&
981             FTy.getParamType(2)->isPointerTy());
982 
983   case LibFunc::sinpi:
984   case LibFunc::cospi:
985     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
986             FTy.getReturnType() == FTy.getParamType(0));
987 
988   case LibFunc::sinpif:
989   case LibFunc::cospif:
990     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
991             FTy.getReturnType() == FTy.getParamType(0));
992 
993   default:
994     // Assume the other functions are correct.
995     // FIXME: It'd be really nice to cover them all.
996     return true;
997   }
998 }
999 
1000 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1001                                        LibFunc::Func &F) const {
1002   const DataLayout *DL =
1003       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1004   return getLibFunc(FDecl.getName(), F) &&
1005          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1006 }
1007 
1008 void TargetLibraryInfoImpl::disableAllFunctions() {
1009   memset(AvailableArray, 0, sizeof(AvailableArray));
1010 }
1011 
1012 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1013   return LHS.ScalarFnName < RHS.ScalarFnName;
1014 }
1015 
1016 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1017   return LHS.VectorFnName < RHS.VectorFnName;
1018 }
1019 
1020 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1021   return LHS.ScalarFnName < S;
1022 }
1023 
1024 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1025   return LHS.VectorFnName < S;
1026 }
1027 
1028 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1029   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1030   std::sort(VectorDescs.begin(), VectorDescs.end(), compareByScalarFnName);
1031 
1032   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1033   std::sort(ScalarDescs.begin(), ScalarDescs.end(), compareByVectorFnName);
1034 }
1035 
1036 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1037     enum VectorLibrary VecLib) {
1038   switch (VecLib) {
1039   case Accelerate: {
1040     const VecDesc VecFuncs[] = {
1041         // Floating-Point Arithmetic and Auxiliary Functions
1042         {"ceilf", "vceilf", 4},
1043         {"fabsf", "vfabsf", 4},
1044         {"llvm.fabs.f32", "vfabsf", 4},
1045         {"floorf", "vfloorf", 4},
1046         {"sqrtf", "vsqrtf", 4},
1047         {"llvm.sqrt.f32", "vsqrtf", 4},
1048 
1049         // Exponential and Logarithmic Functions
1050         {"expf", "vexpf", 4},
1051         {"llvm.exp.f32", "vexpf", 4},
1052         {"expm1f", "vexpm1f", 4},
1053         {"logf", "vlogf", 4},
1054         {"llvm.log.f32", "vlogf", 4},
1055         {"log1pf", "vlog1pf", 4},
1056         {"log10f", "vlog10f", 4},
1057         {"llvm.log10.f32", "vlog10f", 4},
1058         {"logbf", "vlogbf", 4},
1059 
1060         // Trigonometric Functions
1061         {"sinf", "vsinf", 4},
1062         {"llvm.sin.f32", "vsinf", 4},
1063         {"cosf", "vcosf", 4},
1064         {"llvm.cos.f32", "vcosf", 4},
1065         {"tanf", "vtanf", 4},
1066         {"asinf", "vasinf", 4},
1067         {"acosf", "vacosf", 4},
1068         {"atanf", "vatanf", 4},
1069 
1070         // Hyperbolic Functions
1071         {"sinhf", "vsinhf", 4},
1072         {"coshf", "vcoshf", 4},
1073         {"tanhf", "vtanhf", 4},
1074         {"asinhf", "vasinhf", 4},
1075         {"acoshf", "vacoshf", 4},
1076         {"atanhf", "vatanhf", 4},
1077     };
1078     addVectorizableFunctions(VecFuncs);
1079     break;
1080   }
1081   case SVML: {
1082     const VecDesc VecFuncs[] = {
1083         {"sin", "__svml_sin2", 2},
1084         {"sin", "__svml_sin4", 4},
1085         {"sin", "__svml_sin8", 8},
1086 
1087         {"sinf", "__svml_sinf4", 4},
1088         {"sinf", "__svml_sinf8", 8},
1089         {"sinf", "__svml_sinf16", 16},
1090 
1091         {"cos", "__svml_cos2", 2},
1092         {"cos", "__svml_cos4", 4},
1093         {"cos", "__svml_cos8", 8},
1094 
1095         {"cosf", "__svml_cosf4", 4},
1096         {"cosf", "__svml_cosf8", 8},
1097         {"cosf", "__svml_cosf16", 16},
1098 
1099         {"pow", "__svml_pow2", 2},
1100         {"pow", "__svml_pow4", 4},
1101         {"pow", "__svml_pow8", 8},
1102 
1103         {"powf", "__svml_powf4", 4},
1104         {"powf", "__svml_powf8", 8},
1105         {"powf", "__svml_powf16", 16},
1106 
1107         {"llvm.pow.f64", "__svml_pow2", 2},
1108         {"llvm.pow.f64", "__svml_pow4", 4},
1109         {"llvm.pow.f64", "__svml_pow8", 8},
1110 
1111         {"llvm.pow.f32", "__svml_powf4", 4},
1112         {"llvm.pow.f32", "__svml_powf8", 8},
1113         {"llvm.pow.f32", "__svml_powf16", 16},
1114 
1115         {"exp", "__svml_exp2", 2},
1116         {"exp", "__svml_exp4", 4},
1117         {"exp", "__svml_exp8", 8},
1118 
1119         {"expf", "__svml_expf4", 4},
1120         {"expf", "__svml_expf8", 8},
1121         {"expf", "__svml_expf16", 16},
1122 
1123         {"llvm.exp.f64", "__svml_exp2", 2},
1124         {"llvm.exp.f64", "__svml_exp4", 4},
1125         {"llvm.exp.f64", "__svml_exp8", 8},
1126 
1127         {"llvm.exp.f32", "__svml_expf4", 4},
1128         {"llvm.exp.f32", "__svml_expf8", 8},
1129         {"llvm.exp.f32", "__svml_expf16", 16},
1130 
1131         {"log", "__svml_log2", 2},
1132         {"log", "__svml_log4", 4},
1133         {"log", "__svml_log8", 8},
1134 
1135         {"logf", "__svml_logf4", 4},
1136         {"logf", "__svml_logf8", 8},
1137         {"logf", "__svml_logf16", 16},
1138 
1139         {"llvm.log.f64", "__svml_log2", 2},
1140         {"llvm.log.f64", "__svml_log4", 4},
1141         {"llvm.log.f64", "__svml_log8", 8},
1142 
1143         {"llvm.log.f32", "__svml_logf4", 4},
1144         {"llvm.log.f32", "__svml_logf8", 8},
1145         {"llvm.log.f32", "__svml_logf16", 16},
1146     };
1147     addVectorizableFunctions(VecFuncs);
1148     break;
1149   }
1150   case NoLibrary:
1151     break;
1152   }
1153 }
1154 
1155 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1156   funcName = sanitizeFunctionName(funcName);
1157   if (funcName.empty())
1158     return false;
1159 
1160   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1161       VectorDescs.begin(), VectorDescs.end(), funcName,
1162       compareWithScalarFnName);
1163   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1164 }
1165 
1166 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1167                                                        unsigned VF) const {
1168   F = sanitizeFunctionName(F);
1169   if (F.empty())
1170     return F;
1171   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1172       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
1173   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1174     if (I->VectorizationFactor == VF)
1175       return I->VectorFnName;
1176     ++I;
1177   }
1178   return StringRef();
1179 }
1180 
1181 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1182                                                        unsigned &VF) const {
1183   F = sanitizeFunctionName(F);
1184   if (F.empty())
1185     return F;
1186 
1187   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1188       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
1189   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1190     return StringRef();
1191   VF = I->VectorizationFactor;
1192   return I->ScalarFnName;
1193 }
1194 
1195 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M,
1196                                              ModuleAnalysisManager &) {
1197   if (PresetInfoImpl)
1198     return TargetLibraryInfo(*PresetInfoImpl);
1199 
1200   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
1201 }
1202 
1203 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1204                                              FunctionAnalysisManager &) {
1205   if (PresetInfoImpl)
1206     return TargetLibraryInfo(*PresetInfoImpl);
1207 
1208   return TargetLibraryInfo(
1209       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1210 }
1211 
1212 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1213   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1214       Impls[T.normalize()];
1215   if (!Impl)
1216     Impl.reset(new TargetLibraryInfoImpl(T));
1217 
1218   return *Impl;
1219 }
1220 
1221 
1222 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1223     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1224   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1225 }
1226 
1227 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1228     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1229   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1230 }
1231 
1232 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1233     const TargetLibraryInfoImpl &TLIImpl)
1234     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1235   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1236 }
1237 
1238 char TargetLibraryAnalysis::PassID;
1239 
1240 // Register the basic pass.
1241 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1242                 "Target Library Information", false, true)
1243 char TargetLibraryInfoWrapperPass::ID = 0;
1244 
1245 void TargetLibraryInfoWrapperPass::anchor() {}
1246