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                clEnumValEnd));
27 
28 const char *const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
29 #define TLI_DEFINE_STRING
30 #include "llvm/Analysis/TargetLibraryInfo.def"
31 };
32 
33 static bool hasSinCosPiStret(const Triple &T) {
34   // Only Darwin variants have _stret versions of combined trig functions.
35   if (!T.isOSDarwin())
36     return false;
37 
38   // The ABI is rather complicated on x86, so don't do anything special there.
39   if (T.getArch() == Triple::x86)
40     return false;
41 
42   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
43     return false;
44 
45   if (T.isiOS() && T.isOSVersionLT(7, 0))
46     return false;
47 
48   return true;
49 }
50 
51 /// initialize - Initialize the set of available library functions based on the
52 /// specified target triple.  This should be carefully written so that a missing
53 /// target triple gets a sane set of defaults.
54 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
55                        const char *const *StandardNames) {
56 #ifndef NDEBUG
57   // Verify that the StandardNames array is in alphabetical order.
58   for (unsigned F = 1; F < LibFunc::NumLibFuncs; ++F) {
59     if (strcmp(StandardNames[F-1], StandardNames[F]) >= 0)
60       llvm_unreachable("TargetLibraryInfoImpl function names must be sorted");
61   }
62 #endif // !NDEBUG
63 
64   // There are no library implementations of mempcy and memset for AMD gpus and
65   // these can be difficult to lower in the backend.
66   if (T.getArch() == Triple::r600 ||
67       T.getArch() == Triple::amdgcn ||
68       T.getArch() == Triple::wasm32 ||
69       T.getArch() == Triple::wasm64) {
70     TLI.setUnavailable(LibFunc::memcpy);
71     TLI.setUnavailable(LibFunc::memset);
72     TLI.setUnavailable(LibFunc::memset_pattern16);
73     return;
74   }
75 
76   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
77   // All versions of watchOS support it.
78   if (T.isMacOSX()) {
79     if (T.isMacOSXVersionLT(10, 5))
80       TLI.setUnavailable(LibFunc::memset_pattern16);
81   } else if (T.isiOS()) {
82     if (T.isOSVersionLT(3, 0))
83       TLI.setUnavailable(LibFunc::memset_pattern16);
84   } else if (!T.isWatchOS()) {
85     TLI.setUnavailable(LibFunc::memset_pattern16);
86   }
87 
88   if (!hasSinCosPiStret(T)) {
89     TLI.setUnavailable(LibFunc::sinpi);
90     TLI.setUnavailable(LibFunc::sinpif);
91     TLI.setUnavailable(LibFunc::cospi);
92     TLI.setUnavailable(LibFunc::cospif);
93     TLI.setUnavailable(LibFunc::sincospi_stret);
94     TLI.setUnavailable(LibFunc::sincospif_stret);
95   }
96 
97   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
98       !T.isMacOSXVersionLT(10, 7)) {
99     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
100     // we don't care about) have two versions; on recent OSX, the one we want
101     // has a $UNIX2003 suffix. The two implementations are identical except
102     // for the return value in some edge cases.  However, we don't want to
103     // generate code that depends on the old symbols.
104     TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
105     TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
106   }
107 
108   // iprintf and friends are only available on XCore and TCE.
109   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
110     TLI.setUnavailable(LibFunc::iprintf);
111     TLI.setUnavailable(LibFunc::siprintf);
112     TLI.setUnavailable(LibFunc::fiprintf);
113   }
114 
115   if (T.isOSWindows() && !T.isOSCygMing()) {
116     // Win32 does not support long double
117     TLI.setUnavailable(LibFunc::acosl);
118     TLI.setUnavailable(LibFunc::asinl);
119     TLI.setUnavailable(LibFunc::atanl);
120     TLI.setUnavailable(LibFunc::atan2l);
121     TLI.setUnavailable(LibFunc::ceill);
122     TLI.setUnavailable(LibFunc::copysignl);
123     TLI.setUnavailable(LibFunc::cosl);
124     TLI.setUnavailable(LibFunc::coshl);
125     TLI.setUnavailable(LibFunc::expl);
126     TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
127     TLI.setUnavailable(LibFunc::fabsl);
128     TLI.setUnavailable(LibFunc::floorl);
129     TLI.setUnavailable(LibFunc::fmaxl);
130     TLI.setUnavailable(LibFunc::fminl);
131     TLI.setUnavailable(LibFunc::fmodl);
132     TLI.setUnavailable(LibFunc::frexpl);
133     TLI.setUnavailable(LibFunc::ldexpf);
134     TLI.setUnavailable(LibFunc::ldexpl);
135     TLI.setUnavailable(LibFunc::logl);
136     TLI.setUnavailable(LibFunc::modfl);
137     TLI.setUnavailable(LibFunc::powl);
138     TLI.setUnavailable(LibFunc::sinl);
139     TLI.setUnavailable(LibFunc::sinhl);
140     TLI.setUnavailable(LibFunc::sqrtl);
141     TLI.setUnavailable(LibFunc::tanl);
142     TLI.setUnavailable(LibFunc::tanhl);
143 
144     // Win32 only has C89 math
145     TLI.setUnavailable(LibFunc::acosh);
146     TLI.setUnavailable(LibFunc::acoshf);
147     TLI.setUnavailable(LibFunc::acoshl);
148     TLI.setUnavailable(LibFunc::asinh);
149     TLI.setUnavailable(LibFunc::asinhf);
150     TLI.setUnavailable(LibFunc::asinhl);
151     TLI.setUnavailable(LibFunc::atanh);
152     TLI.setUnavailable(LibFunc::atanhf);
153     TLI.setUnavailable(LibFunc::atanhl);
154     TLI.setUnavailable(LibFunc::cbrt);
155     TLI.setUnavailable(LibFunc::cbrtf);
156     TLI.setUnavailable(LibFunc::cbrtl);
157     TLI.setUnavailable(LibFunc::exp2);
158     TLI.setUnavailable(LibFunc::exp2f);
159     TLI.setUnavailable(LibFunc::exp2l);
160     TLI.setUnavailable(LibFunc::expm1);
161     TLI.setUnavailable(LibFunc::expm1f);
162     TLI.setUnavailable(LibFunc::expm1l);
163     TLI.setUnavailable(LibFunc::log2);
164     TLI.setUnavailable(LibFunc::log2f);
165     TLI.setUnavailable(LibFunc::log2l);
166     TLI.setUnavailable(LibFunc::log1p);
167     TLI.setUnavailable(LibFunc::log1pf);
168     TLI.setUnavailable(LibFunc::log1pl);
169     TLI.setUnavailable(LibFunc::logb);
170     TLI.setUnavailable(LibFunc::logbf);
171     TLI.setUnavailable(LibFunc::logbl);
172     TLI.setUnavailable(LibFunc::nearbyint);
173     TLI.setUnavailable(LibFunc::nearbyintf);
174     TLI.setUnavailable(LibFunc::nearbyintl);
175     TLI.setUnavailable(LibFunc::rint);
176     TLI.setUnavailable(LibFunc::rintf);
177     TLI.setUnavailable(LibFunc::rintl);
178     TLI.setUnavailable(LibFunc::round);
179     TLI.setUnavailable(LibFunc::roundf);
180     TLI.setUnavailable(LibFunc::roundl);
181     TLI.setUnavailable(LibFunc::trunc);
182     TLI.setUnavailable(LibFunc::truncf);
183     TLI.setUnavailable(LibFunc::truncl);
184 
185     // Win32 provides some C99 math with mangled names
186     TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
187 
188     if (T.getArch() == Triple::x86) {
189       // Win32 on x86 implements single-precision math functions as macros
190       TLI.setUnavailable(LibFunc::acosf);
191       TLI.setUnavailable(LibFunc::asinf);
192       TLI.setUnavailable(LibFunc::atanf);
193       TLI.setUnavailable(LibFunc::atan2f);
194       TLI.setUnavailable(LibFunc::ceilf);
195       TLI.setUnavailable(LibFunc::copysignf);
196       TLI.setUnavailable(LibFunc::cosf);
197       TLI.setUnavailable(LibFunc::coshf);
198       TLI.setUnavailable(LibFunc::expf);
199       TLI.setUnavailable(LibFunc::floorf);
200       TLI.setUnavailable(LibFunc::fminf);
201       TLI.setUnavailable(LibFunc::fmaxf);
202       TLI.setUnavailable(LibFunc::fmodf);
203       TLI.setUnavailable(LibFunc::logf);
204       TLI.setUnavailable(LibFunc::powf);
205       TLI.setUnavailable(LibFunc::sinf);
206       TLI.setUnavailable(LibFunc::sinhf);
207       TLI.setUnavailable(LibFunc::sqrtf);
208       TLI.setUnavailable(LibFunc::tanf);
209       TLI.setUnavailable(LibFunc::tanhf);
210     }
211 
212     // Win32 does *not* provide provide these functions, but they are
213     // generally available on POSIX-compliant systems:
214     TLI.setUnavailable(LibFunc::access);
215     TLI.setUnavailable(LibFunc::bcmp);
216     TLI.setUnavailable(LibFunc::bcopy);
217     TLI.setUnavailable(LibFunc::bzero);
218     TLI.setUnavailable(LibFunc::chmod);
219     TLI.setUnavailable(LibFunc::chown);
220     TLI.setUnavailable(LibFunc::closedir);
221     TLI.setUnavailable(LibFunc::ctermid);
222     TLI.setUnavailable(LibFunc::fdopen);
223     TLI.setUnavailable(LibFunc::ffs);
224     TLI.setUnavailable(LibFunc::fileno);
225     TLI.setUnavailable(LibFunc::flockfile);
226     TLI.setUnavailable(LibFunc::fseeko);
227     TLI.setUnavailable(LibFunc::fstat);
228     TLI.setUnavailable(LibFunc::fstatvfs);
229     TLI.setUnavailable(LibFunc::ftello);
230     TLI.setUnavailable(LibFunc::ftrylockfile);
231     TLI.setUnavailable(LibFunc::funlockfile);
232     TLI.setUnavailable(LibFunc::getc_unlocked);
233     TLI.setUnavailable(LibFunc::getitimer);
234     TLI.setUnavailable(LibFunc::getlogin_r);
235     TLI.setUnavailable(LibFunc::getpwnam);
236     TLI.setUnavailable(LibFunc::gettimeofday);
237     TLI.setUnavailable(LibFunc::htonl);
238     TLI.setUnavailable(LibFunc::htons);
239     TLI.setUnavailable(LibFunc::lchown);
240     TLI.setUnavailable(LibFunc::lstat);
241     TLI.setUnavailable(LibFunc::memccpy);
242     TLI.setUnavailable(LibFunc::mkdir);
243     TLI.setUnavailable(LibFunc::ntohl);
244     TLI.setUnavailable(LibFunc::ntohs);
245     TLI.setUnavailable(LibFunc::open);
246     TLI.setUnavailable(LibFunc::opendir);
247     TLI.setUnavailable(LibFunc::pclose);
248     TLI.setUnavailable(LibFunc::popen);
249     TLI.setUnavailable(LibFunc::pread);
250     TLI.setUnavailable(LibFunc::pwrite);
251     TLI.setUnavailable(LibFunc::read);
252     TLI.setUnavailable(LibFunc::readlink);
253     TLI.setUnavailable(LibFunc::realpath);
254     TLI.setUnavailable(LibFunc::rmdir);
255     TLI.setUnavailable(LibFunc::setitimer);
256     TLI.setUnavailable(LibFunc::stat);
257     TLI.setUnavailable(LibFunc::statvfs);
258     TLI.setUnavailable(LibFunc::stpcpy);
259     TLI.setUnavailable(LibFunc::stpncpy);
260     TLI.setUnavailable(LibFunc::strcasecmp);
261     TLI.setUnavailable(LibFunc::strncasecmp);
262     TLI.setUnavailable(LibFunc::times);
263     TLI.setUnavailable(LibFunc::uname);
264     TLI.setUnavailable(LibFunc::unlink);
265     TLI.setUnavailable(LibFunc::unsetenv);
266     TLI.setUnavailable(LibFunc::utime);
267     TLI.setUnavailable(LibFunc::utimes);
268     TLI.setUnavailable(LibFunc::write);
269 
270     // Win32 does *not* provide provide these functions, but they are
271     // specified by C99:
272     TLI.setUnavailable(LibFunc::atoll);
273     TLI.setUnavailable(LibFunc::frexpf);
274     TLI.setUnavailable(LibFunc::llabs);
275   }
276 
277   switch (T.getOS()) {
278   case Triple::MacOSX:
279     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
280     // and their names are __exp10 and __exp10f. exp10l is not available on
281     // OS X or iOS.
282     TLI.setUnavailable(LibFunc::exp10l);
283     if (T.isMacOSXVersionLT(10, 9)) {
284       TLI.setUnavailable(LibFunc::exp10);
285       TLI.setUnavailable(LibFunc::exp10f);
286     } else {
287       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
288       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
289     }
290     break;
291   case Triple::IOS:
292   case Triple::WatchOS:
293     TLI.setUnavailable(LibFunc::exp10l);
294     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
295                            (T.isOSVersionLT(9, 0) &&
296                             (T.getArch() == Triple::x86 ||
297                              T.getArch() == Triple::x86_64)))) {
298       TLI.setUnavailable(LibFunc::exp10);
299       TLI.setUnavailable(LibFunc::exp10f);
300     } else {
301       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
302       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
303     }
304     break;
305   case Triple::Linux:
306     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
307     // buggy prior to glibc version 2.18. Until this version is widely deployed
308     // or we have a reasonable detection strategy, we cannot use exp10 reliably
309     // on Linux.
310     //
311     // Fall through to disable all of them.
312   default:
313     TLI.setUnavailable(LibFunc::exp10);
314     TLI.setUnavailable(LibFunc::exp10f);
315     TLI.setUnavailable(LibFunc::exp10l);
316   }
317 
318   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
319   // Linux (GLIBC):
320   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
321   // http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsl.c
322   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
323   switch (T.getOS()) {
324   case Triple::Darwin:
325   case Triple::MacOSX:
326   case Triple::IOS:
327   case Triple::WatchOS:
328   case Triple::FreeBSD:
329   case Triple::Linux:
330     break;
331   default:
332     TLI.setUnavailable(LibFunc::ffsl);
333   }
334 
335   // ffsll is available on at least FreeBSD and Linux (GLIBC):
336   // http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsll.c
337   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
338   switch (T.getOS()) {
339   case Triple::FreeBSD:
340   case Triple::Linux:
341     break;
342   default:
343     TLI.setUnavailable(LibFunc::ffsll);
344   }
345 
346   // The following functions are available on at least Linux:
347   if (!T.isOSLinux()) {
348     TLI.setUnavailable(LibFunc::dunder_strdup);
349     TLI.setUnavailable(LibFunc::dunder_strtok_r);
350     TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
351     TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
352     TLI.setUnavailable(LibFunc::under_IO_getc);
353     TLI.setUnavailable(LibFunc::under_IO_putc);
354     TLI.setUnavailable(LibFunc::memalign);
355     TLI.setUnavailable(LibFunc::fopen64);
356     TLI.setUnavailable(LibFunc::fseeko64);
357     TLI.setUnavailable(LibFunc::fstat64);
358     TLI.setUnavailable(LibFunc::fstatvfs64);
359     TLI.setUnavailable(LibFunc::ftello64);
360     TLI.setUnavailable(LibFunc::lstat64);
361     TLI.setUnavailable(LibFunc::open64);
362     TLI.setUnavailable(LibFunc::stat64);
363     TLI.setUnavailable(LibFunc::statvfs64);
364     TLI.setUnavailable(LibFunc::tmpfile64);
365   }
366 
367   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
368 }
369 
370 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
371   // Default to everything being available.
372   memset(AvailableArray, -1, sizeof(AvailableArray));
373 
374   initialize(*this, Triple(), StandardNames);
375 }
376 
377 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
378   // Default to everything being available.
379   memset(AvailableArray, -1, sizeof(AvailableArray));
380 
381   initialize(*this, T, StandardNames);
382 }
383 
384 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
385     : CustomNames(TLI.CustomNames) {
386   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
387   VectorDescs = TLI.VectorDescs;
388   ScalarDescs = TLI.ScalarDescs;
389 }
390 
391 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
392     : CustomNames(std::move(TLI.CustomNames)) {
393   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
394             AvailableArray);
395   VectorDescs = TLI.VectorDescs;
396   ScalarDescs = TLI.ScalarDescs;
397 }
398 
399 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
400   CustomNames = TLI.CustomNames;
401   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
402   return *this;
403 }
404 
405 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
406   CustomNames = std::move(TLI.CustomNames);
407   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
408             AvailableArray);
409   return *this;
410 }
411 
412 static StringRef sanitizeFunctionName(StringRef funcName) {
413   // Filter out empty names and names containing null bytes, those can't be in
414   // our table.
415   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
416     return StringRef();
417 
418   // Check for \01 prefix that is used to mangle __asm declarations and
419   // strip it if present.
420   return GlobalValue::getRealLinkageName(funcName);
421 }
422 
423 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
424                                    LibFunc::Func &F) const {
425   const char *const *Start = &StandardNames[0];
426   const char *const *End = &StandardNames[LibFunc::NumLibFuncs];
427 
428   funcName = sanitizeFunctionName(funcName);
429   if (funcName.empty())
430     return false;
431 
432   const char *const *I = std::lower_bound(
433       Start, End, funcName, [](const char *LHS, StringRef RHS) {
434         return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
435       });
436   if (I != End && *I == funcName) {
437     F = (LibFunc::Func)(I - Start);
438     return true;
439   }
440   return false;
441 }
442 
443 void TargetLibraryInfoImpl::disableAllFunctions() {
444   memset(AvailableArray, 0, sizeof(AvailableArray));
445 }
446 
447 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
448   return std::strncmp(LHS.ScalarFnName, RHS.ScalarFnName,
449                       std::strlen(RHS.ScalarFnName)) < 0;
450 }
451 
452 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
453   return std::strncmp(LHS.VectorFnName, RHS.VectorFnName,
454                       std::strlen(RHS.VectorFnName)) < 0;
455 }
456 
457 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
458   return std::strncmp(LHS.ScalarFnName, S.data(), S.size()) < 0;
459 }
460 
461 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
462   return std::strncmp(LHS.VectorFnName, S.data(), S.size()) < 0;
463 }
464 
465 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
466   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
467   std::sort(VectorDescs.begin(), VectorDescs.end(), compareByScalarFnName);
468 
469   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
470   std::sort(ScalarDescs.begin(), ScalarDescs.end(), compareByVectorFnName);
471 }
472 
473 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
474     enum VectorLibrary VecLib) {
475   switch (VecLib) {
476   case Accelerate: {
477     const VecDesc VecFuncs[] = {
478         // Floating-Point Arithmetic and Auxiliary Functions
479         {"ceilf", "vceilf", 4},
480         {"fabsf", "vfabsf", 4},
481         {"llvm.fabs.f32", "vfabsf", 4},
482         {"floorf", "vfloorf", 4},
483         {"sqrtf", "vsqrtf", 4},
484         {"llvm.sqrt.f32", "vsqrtf", 4},
485 
486         // Exponential and Logarithmic Functions
487         {"expf", "vexpf", 4},
488         {"llvm.exp.f32", "vexpf", 4},
489         {"expm1f", "vexpm1f", 4},
490         {"logf", "vlogf", 4},
491         {"llvm.log.f32", "vlogf", 4},
492         {"log1pf", "vlog1pf", 4},
493         {"log10f", "vlog10f", 4},
494         {"llvm.log10.f32", "vlog10f", 4},
495         {"logbf", "vlogbf", 4},
496 
497         // Trigonometric Functions
498         {"sinf", "vsinf", 4},
499         {"llvm.sin.f32", "vsinf", 4},
500         {"cosf", "vcosf", 4},
501         {"llvm.cos.f32", "vcosf", 4},
502         {"tanf", "vtanf", 4},
503         {"asinf", "vasinf", 4},
504         {"acosf", "vacosf", 4},
505         {"atanf", "vatanf", 4},
506 
507         // Hyperbolic Functions
508         {"sinhf", "vsinhf", 4},
509         {"coshf", "vcoshf", 4},
510         {"tanhf", "vtanhf", 4},
511         {"asinhf", "vasinhf", 4},
512         {"acoshf", "vacoshf", 4},
513         {"atanhf", "vatanhf", 4},
514     };
515     addVectorizableFunctions(VecFuncs);
516     break;
517   }
518   case NoLibrary:
519     break;
520   }
521 }
522 
523 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
524   funcName = sanitizeFunctionName(funcName);
525   if (funcName.empty())
526     return false;
527 
528   std::vector<VecDesc>::const_iterator I = std::lower_bound(
529       VectorDescs.begin(), VectorDescs.end(), funcName,
530       compareWithScalarFnName);
531   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
532 }
533 
534 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
535                                                        unsigned VF) const {
536   F = sanitizeFunctionName(F);
537   if (F.empty())
538     return F;
539   std::vector<VecDesc>::const_iterator I = std::lower_bound(
540       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
541   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
542     if (I->VectorizationFactor == VF)
543       return I->VectorFnName;
544     ++I;
545   }
546   return StringRef();
547 }
548 
549 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
550                                                        unsigned &VF) const {
551   F = sanitizeFunctionName(F);
552   if (F.empty())
553     return F;
554 
555   std::vector<VecDesc>::const_iterator I = std::lower_bound(
556       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
557   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
558     return StringRef();
559   VF = I->VectorizationFactor;
560   return I->ScalarFnName;
561 }
562 
563 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M) {
564   if (PresetInfoImpl)
565     return TargetLibraryInfo(*PresetInfoImpl);
566 
567   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
568 }
569 
570 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F) {
571   if (PresetInfoImpl)
572     return TargetLibraryInfo(*PresetInfoImpl);
573 
574   return TargetLibraryInfo(
575       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
576 }
577 
578 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(Triple T) {
579   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
580       Impls[T.normalize()];
581   if (!Impl)
582     Impl.reset(new TargetLibraryInfoImpl(T));
583 
584   return *Impl;
585 }
586 
587 
588 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
589     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
590   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
591 }
592 
593 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
594     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
595   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
596 }
597 
598 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
599     const TargetLibraryInfoImpl &TLIImpl)
600     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
601   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
602 }
603 
604 char TargetLibraryAnalysis::PassID;
605 
606 // Register the basic pass.
607 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
608                 "Target Library Information", false, true)
609 char TargetLibraryInfoWrapperPass::ID = 0;
610 
611 void TargetLibraryInfoWrapperPass::anchor() {}
612