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                        ArrayRef<const char *> StandardNames) {
56   // Verify that the StandardNames array is in alphabetical order.
57   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
58                         [](const char *LHS, const char *RHS) {
59                           return strcmp(LHS, RHS) < 0;
60                         }) &&
61          "TargetLibraryInfoImpl function names must be sorted");
62 
63   if (T.getArch() == Triple::r600 ||
64       T.getArch() == Triple::amdgcn) {
65     TLI.setUnavailable(LibFunc::ldexp);
66     TLI.setUnavailable(LibFunc::ldexpf);
67     TLI.setUnavailable(LibFunc::ldexpl);
68   }
69 
70   // There are no library implementations of mempcy and memset for AMD gpus and
71   // these can be difficult to lower in the backend.
72   if (T.getArch() == Triple::r600 ||
73       T.getArch() == Triple::amdgcn ||
74       T.getArch() == Triple::wasm32 ||
75       T.getArch() == Triple::wasm64) {
76     TLI.setUnavailable(LibFunc::memcpy);
77     TLI.setUnavailable(LibFunc::memset);
78     TLI.setUnavailable(LibFunc::memset_pattern16);
79     return;
80   }
81 
82   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
83   // All versions of watchOS support it.
84   if (T.isMacOSX()) {
85     if (T.isMacOSXVersionLT(10, 5))
86       TLI.setUnavailable(LibFunc::memset_pattern16);
87   } else if (T.isiOS()) {
88     if (T.isOSVersionLT(3, 0))
89       TLI.setUnavailable(LibFunc::memset_pattern16);
90   } else if (!T.isWatchOS()) {
91     TLI.setUnavailable(LibFunc::memset_pattern16);
92   }
93 
94   if (!hasSinCosPiStret(T)) {
95     TLI.setUnavailable(LibFunc::sinpi);
96     TLI.setUnavailable(LibFunc::sinpif);
97     TLI.setUnavailable(LibFunc::cospi);
98     TLI.setUnavailable(LibFunc::cospif);
99     TLI.setUnavailable(LibFunc::sincospi_stret);
100     TLI.setUnavailable(LibFunc::sincospif_stret);
101   }
102 
103   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
104       !T.isMacOSXVersionLT(10, 7)) {
105     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
106     // we don't care about) have two versions; on recent OSX, the one we want
107     // has a $UNIX2003 suffix. The two implementations are identical except
108     // for the return value in some edge cases.  However, we don't want to
109     // generate code that depends on the old symbols.
110     TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
111     TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
112   }
113 
114   // iprintf and friends are only available on XCore and TCE.
115   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
116     TLI.setUnavailable(LibFunc::iprintf);
117     TLI.setUnavailable(LibFunc::siprintf);
118     TLI.setUnavailable(LibFunc::fiprintf);
119   }
120 
121   if (T.isOSWindows() && !T.isOSCygMing()) {
122     // Win32 does not support long double
123     TLI.setUnavailable(LibFunc::acosl);
124     TLI.setUnavailable(LibFunc::asinl);
125     TLI.setUnavailable(LibFunc::atanl);
126     TLI.setUnavailable(LibFunc::atan2l);
127     TLI.setUnavailable(LibFunc::ceill);
128     TLI.setUnavailable(LibFunc::copysignl);
129     TLI.setUnavailable(LibFunc::cosl);
130     TLI.setUnavailable(LibFunc::coshl);
131     TLI.setUnavailable(LibFunc::expl);
132     TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
133     TLI.setUnavailable(LibFunc::fabsl);
134     TLI.setUnavailable(LibFunc::floorl);
135     TLI.setUnavailable(LibFunc::fmaxl);
136     TLI.setUnavailable(LibFunc::fminl);
137     TLI.setUnavailable(LibFunc::fmodl);
138     TLI.setUnavailable(LibFunc::frexpl);
139     TLI.setUnavailable(LibFunc::ldexpf);
140     TLI.setUnavailable(LibFunc::ldexpl);
141     TLI.setUnavailable(LibFunc::logl);
142     TLI.setUnavailable(LibFunc::modfl);
143     TLI.setUnavailable(LibFunc::powl);
144     TLI.setUnavailable(LibFunc::sinl);
145     TLI.setUnavailable(LibFunc::sinhl);
146     TLI.setUnavailable(LibFunc::sqrtl);
147     TLI.setUnavailable(LibFunc::tanl);
148     TLI.setUnavailable(LibFunc::tanhl);
149 
150     // Win32 only has C89 math
151     TLI.setUnavailable(LibFunc::acosh);
152     TLI.setUnavailable(LibFunc::acoshf);
153     TLI.setUnavailable(LibFunc::acoshl);
154     TLI.setUnavailable(LibFunc::asinh);
155     TLI.setUnavailable(LibFunc::asinhf);
156     TLI.setUnavailable(LibFunc::asinhl);
157     TLI.setUnavailable(LibFunc::atanh);
158     TLI.setUnavailable(LibFunc::atanhf);
159     TLI.setUnavailable(LibFunc::atanhl);
160     TLI.setUnavailable(LibFunc::cbrt);
161     TLI.setUnavailable(LibFunc::cbrtf);
162     TLI.setUnavailable(LibFunc::cbrtl);
163     TLI.setUnavailable(LibFunc::exp2);
164     TLI.setUnavailable(LibFunc::exp2f);
165     TLI.setUnavailable(LibFunc::exp2l);
166     TLI.setUnavailable(LibFunc::expm1);
167     TLI.setUnavailable(LibFunc::expm1f);
168     TLI.setUnavailable(LibFunc::expm1l);
169     TLI.setUnavailable(LibFunc::log2);
170     TLI.setUnavailable(LibFunc::log2f);
171     TLI.setUnavailable(LibFunc::log2l);
172     TLI.setUnavailable(LibFunc::log1p);
173     TLI.setUnavailable(LibFunc::log1pf);
174     TLI.setUnavailable(LibFunc::log1pl);
175     TLI.setUnavailable(LibFunc::logb);
176     TLI.setUnavailable(LibFunc::logbf);
177     TLI.setUnavailable(LibFunc::logbl);
178     TLI.setUnavailable(LibFunc::nearbyint);
179     TLI.setUnavailable(LibFunc::nearbyintf);
180     TLI.setUnavailable(LibFunc::nearbyintl);
181     TLI.setUnavailable(LibFunc::rint);
182     TLI.setUnavailable(LibFunc::rintf);
183     TLI.setUnavailable(LibFunc::rintl);
184     TLI.setUnavailable(LibFunc::round);
185     TLI.setUnavailable(LibFunc::roundf);
186     TLI.setUnavailable(LibFunc::roundl);
187     TLI.setUnavailable(LibFunc::trunc);
188     TLI.setUnavailable(LibFunc::truncf);
189     TLI.setUnavailable(LibFunc::truncl);
190 
191     // Win32 provides some C99 math with mangled names
192     TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
193 
194     if (T.getArch() == Triple::x86) {
195       // Win32 on x86 implements single-precision math functions as macros
196       TLI.setUnavailable(LibFunc::acosf);
197       TLI.setUnavailable(LibFunc::asinf);
198       TLI.setUnavailable(LibFunc::atanf);
199       TLI.setUnavailable(LibFunc::atan2f);
200       TLI.setUnavailable(LibFunc::ceilf);
201       TLI.setUnavailable(LibFunc::copysignf);
202       TLI.setUnavailable(LibFunc::cosf);
203       TLI.setUnavailable(LibFunc::coshf);
204       TLI.setUnavailable(LibFunc::expf);
205       TLI.setUnavailable(LibFunc::floorf);
206       TLI.setUnavailable(LibFunc::fminf);
207       TLI.setUnavailable(LibFunc::fmaxf);
208       TLI.setUnavailable(LibFunc::fmodf);
209       TLI.setUnavailable(LibFunc::logf);
210       TLI.setUnavailable(LibFunc::powf);
211       TLI.setUnavailable(LibFunc::sinf);
212       TLI.setUnavailable(LibFunc::sinhf);
213       TLI.setUnavailable(LibFunc::sqrtf);
214       TLI.setUnavailable(LibFunc::tanf);
215       TLI.setUnavailable(LibFunc::tanhf);
216     }
217 
218     // Win32 does *not* provide provide these functions, but they are
219     // generally available on POSIX-compliant systems:
220     TLI.setUnavailable(LibFunc::access);
221     TLI.setUnavailable(LibFunc::bcmp);
222     TLI.setUnavailable(LibFunc::bcopy);
223     TLI.setUnavailable(LibFunc::bzero);
224     TLI.setUnavailable(LibFunc::chmod);
225     TLI.setUnavailable(LibFunc::chown);
226     TLI.setUnavailable(LibFunc::closedir);
227     TLI.setUnavailable(LibFunc::ctermid);
228     TLI.setUnavailable(LibFunc::fdopen);
229     TLI.setUnavailable(LibFunc::ffs);
230     TLI.setUnavailable(LibFunc::fileno);
231     TLI.setUnavailable(LibFunc::flockfile);
232     TLI.setUnavailable(LibFunc::fseeko);
233     TLI.setUnavailable(LibFunc::fstat);
234     TLI.setUnavailable(LibFunc::fstatvfs);
235     TLI.setUnavailable(LibFunc::ftello);
236     TLI.setUnavailable(LibFunc::ftrylockfile);
237     TLI.setUnavailable(LibFunc::funlockfile);
238     TLI.setUnavailable(LibFunc::getc_unlocked);
239     TLI.setUnavailable(LibFunc::getitimer);
240     TLI.setUnavailable(LibFunc::getlogin_r);
241     TLI.setUnavailable(LibFunc::getpwnam);
242     TLI.setUnavailable(LibFunc::gettimeofday);
243     TLI.setUnavailable(LibFunc::htonl);
244     TLI.setUnavailable(LibFunc::htons);
245     TLI.setUnavailable(LibFunc::lchown);
246     TLI.setUnavailable(LibFunc::lstat);
247     TLI.setUnavailable(LibFunc::memccpy);
248     TLI.setUnavailable(LibFunc::mkdir);
249     TLI.setUnavailable(LibFunc::ntohl);
250     TLI.setUnavailable(LibFunc::ntohs);
251     TLI.setUnavailable(LibFunc::open);
252     TLI.setUnavailable(LibFunc::opendir);
253     TLI.setUnavailable(LibFunc::pclose);
254     TLI.setUnavailable(LibFunc::popen);
255     TLI.setUnavailable(LibFunc::pread);
256     TLI.setUnavailable(LibFunc::pwrite);
257     TLI.setUnavailable(LibFunc::read);
258     TLI.setUnavailable(LibFunc::readlink);
259     TLI.setUnavailable(LibFunc::realpath);
260     TLI.setUnavailable(LibFunc::rmdir);
261     TLI.setUnavailable(LibFunc::setitimer);
262     TLI.setUnavailable(LibFunc::stat);
263     TLI.setUnavailable(LibFunc::statvfs);
264     TLI.setUnavailable(LibFunc::stpcpy);
265     TLI.setUnavailable(LibFunc::stpncpy);
266     TLI.setUnavailable(LibFunc::strcasecmp);
267     TLI.setUnavailable(LibFunc::strncasecmp);
268     TLI.setUnavailable(LibFunc::times);
269     TLI.setUnavailable(LibFunc::uname);
270     TLI.setUnavailable(LibFunc::unlink);
271     TLI.setUnavailable(LibFunc::unsetenv);
272     TLI.setUnavailable(LibFunc::utime);
273     TLI.setUnavailable(LibFunc::utimes);
274     TLI.setUnavailable(LibFunc::write);
275 
276     // Win32 does *not* provide provide these functions, but they are
277     // specified by C99:
278     TLI.setUnavailable(LibFunc::atoll);
279     TLI.setUnavailable(LibFunc::frexpf);
280     TLI.setUnavailable(LibFunc::llabs);
281   }
282 
283   switch (T.getOS()) {
284   case Triple::MacOSX:
285     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
286     // and their names are __exp10 and __exp10f. exp10l is not available on
287     // OS X or iOS.
288     TLI.setUnavailable(LibFunc::exp10l);
289     if (T.isMacOSXVersionLT(10, 9)) {
290       TLI.setUnavailable(LibFunc::exp10);
291       TLI.setUnavailable(LibFunc::exp10f);
292     } else {
293       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
294       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
295     }
296     break;
297   case Triple::IOS:
298   case Triple::TvOS:
299   case Triple::WatchOS:
300     TLI.setUnavailable(LibFunc::exp10l);
301     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
302                            (T.isOSVersionLT(9, 0) &&
303                             (T.getArch() == Triple::x86 ||
304                              T.getArch() == Triple::x86_64)))) {
305       TLI.setUnavailable(LibFunc::exp10);
306       TLI.setUnavailable(LibFunc::exp10f);
307     } else {
308       TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
309       TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
310     }
311     break;
312   case Triple::Linux:
313     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
314     // buggy prior to glibc version 2.18. Until this version is widely deployed
315     // or we have a reasonable detection strategy, we cannot use exp10 reliably
316     // on Linux.
317     //
318     // Fall through to disable all of them.
319   default:
320     TLI.setUnavailable(LibFunc::exp10);
321     TLI.setUnavailable(LibFunc::exp10f);
322     TLI.setUnavailable(LibFunc::exp10l);
323   }
324 
325   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
326   // Linux (GLIBC):
327   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
328   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
329   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
330   switch (T.getOS()) {
331   case Triple::Darwin:
332   case Triple::MacOSX:
333   case Triple::IOS:
334   case Triple::TvOS:
335   case Triple::WatchOS:
336   case Triple::FreeBSD:
337   case Triple::Linux:
338     break;
339   default:
340     TLI.setUnavailable(LibFunc::ffsl);
341   }
342 
343   // ffsll is available on at least FreeBSD and Linux (GLIBC):
344   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
345   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
346   switch (T.getOS()) {
347   case Triple::Darwin:
348   case Triple::MacOSX:
349   case Triple::IOS:
350   case Triple::TvOS:
351   case Triple::WatchOS:
352   case Triple::FreeBSD:
353   case Triple::Linux:
354     break;
355   default:
356     TLI.setUnavailable(LibFunc::ffsll);
357   }
358 
359   // The following functions are available on at least FreeBSD:
360   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
361   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
362   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
363   if (!T.isOSFreeBSD()) {
364     TLI.setUnavailable(LibFunc::fls);
365     TLI.setUnavailable(LibFunc::flsl);
366     TLI.setUnavailable(LibFunc::flsll);
367   }
368 
369   // The following functions are available on at least Linux:
370   if (!T.isOSLinux()) {
371     TLI.setUnavailable(LibFunc::dunder_strdup);
372     TLI.setUnavailable(LibFunc::dunder_strtok_r);
373     TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
374     TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
375     TLI.setUnavailable(LibFunc::under_IO_getc);
376     TLI.setUnavailable(LibFunc::under_IO_putc);
377     TLI.setUnavailable(LibFunc::memalign);
378     TLI.setUnavailable(LibFunc::fopen64);
379     TLI.setUnavailable(LibFunc::fseeko64);
380     TLI.setUnavailable(LibFunc::fstat64);
381     TLI.setUnavailable(LibFunc::fstatvfs64);
382     TLI.setUnavailable(LibFunc::ftello64);
383     TLI.setUnavailable(LibFunc::lstat64);
384     TLI.setUnavailable(LibFunc::open64);
385     TLI.setUnavailable(LibFunc::stat64);
386     TLI.setUnavailable(LibFunc::statvfs64);
387     TLI.setUnavailable(LibFunc::tmpfile64);
388   }
389 
390   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
391 }
392 
393 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
394   // Default to everything being available.
395   memset(AvailableArray, -1, sizeof(AvailableArray));
396 
397   initialize(*this, Triple(), StandardNames);
398 }
399 
400 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
401   // Default to everything being available.
402   memset(AvailableArray, -1, sizeof(AvailableArray));
403 
404   initialize(*this, T, StandardNames);
405 }
406 
407 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
408     : CustomNames(TLI.CustomNames) {
409   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
410   VectorDescs = TLI.VectorDescs;
411   ScalarDescs = TLI.ScalarDescs;
412 }
413 
414 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
415     : CustomNames(std::move(TLI.CustomNames)) {
416   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
417             AvailableArray);
418   VectorDescs = TLI.VectorDescs;
419   ScalarDescs = TLI.ScalarDescs;
420 }
421 
422 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
423   CustomNames = TLI.CustomNames;
424   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
425   return *this;
426 }
427 
428 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
429   CustomNames = std::move(TLI.CustomNames);
430   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
431             AvailableArray);
432   return *this;
433 }
434 
435 static StringRef sanitizeFunctionName(StringRef funcName) {
436   // Filter out empty names and names containing null bytes, those can't be in
437   // our table.
438   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
439     return StringRef();
440 
441   // Check for \01 prefix that is used to mangle __asm declarations and
442   // strip it if present.
443   return GlobalValue::getRealLinkageName(funcName);
444 }
445 
446 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
447                                    LibFunc::Func &F) const {
448   const char *const *Start = &StandardNames[0];
449   const char *const *End = &StandardNames[LibFunc::NumLibFuncs];
450 
451   funcName = sanitizeFunctionName(funcName);
452   if (funcName.empty())
453     return false;
454 
455   const char *const *I = std::lower_bound(
456       Start, End, funcName, [](const char *LHS, StringRef RHS) {
457         return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
458       });
459   if (I != End && *I == funcName) {
460     F = (LibFunc::Func)(I - Start);
461     return true;
462   }
463   return false;
464 }
465 
466 void TargetLibraryInfoImpl::disableAllFunctions() {
467   memset(AvailableArray, 0, sizeof(AvailableArray));
468 }
469 
470 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
471   return std::strncmp(LHS.ScalarFnName, RHS.ScalarFnName,
472                       std::strlen(RHS.ScalarFnName)) < 0;
473 }
474 
475 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
476   return std::strncmp(LHS.VectorFnName, RHS.VectorFnName,
477                       std::strlen(RHS.VectorFnName)) < 0;
478 }
479 
480 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
481   return std::strncmp(LHS.ScalarFnName, S.data(), S.size()) < 0;
482 }
483 
484 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
485   return std::strncmp(LHS.VectorFnName, S.data(), S.size()) < 0;
486 }
487 
488 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
489   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
490   std::sort(VectorDescs.begin(), VectorDescs.end(), compareByScalarFnName);
491 
492   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
493   std::sort(ScalarDescs.begin(), ScalarDescs.end(), compareByVectorFnName);
494 }
495 
496 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
497     enum VectorLibrary VecLib) {
498   switch (VecLib) {
499   case Accelerate: {
500     const VecDesc VecFuncs[] = {
501         // Floating-Point Arithmetic and Auxiliary Functions
502         {"ceilf", "vceilf", 4},
503         {"fabsf", "vfabsf", 4},
504         {"llvm.fabs.f32", "vfabsf", 4},
505         {"floorf", "vfloorf", 4},
506         {"sqrtf", "vsqrtf", 4},
507         {"llvm.sqrt.f32", "vsqrtf", 4},
508 
509         // Exponential and Logarithmic Functions
510         {"expf", "vexpf", 4},
511         {"llvm.exp.f32", "vexpf", 4},
512         {"expm1f", "vexpm1f", 4},
513         {"logf", "vlogf", 4},
514         {"llvm.log.f32", "vlogf", 4},
515         {"log1pf", "vlog1pf", 4},
516         {"log10f", "vlog10f", 4},
517         {"llvm.log10.f32", "vlog10f", 4},
518         {"logbf", "vlogbf", 4},
519 
520         // Trigonometric Functions
521         {"sinf", "vsinf", 4},
522         {"llvm.sin.f32", "vsinf", 4},
523         {"cosf", "vcosf", 4},
524         {"llvm.cos.f32", "vcosf", 4},
525         {"tanf", "vtanf", 4},
526         {"asinf", "vasinf", 4},
527         {"acosf", "vacosf", 4},
528         {"atanf", "vatanf", 4},
529 
530         // Hyperbolic Functions
531         {"sinhf", "vsinhf", 4},
532         {"coshf", "vcoshf", 4},
533         {"tanhf", "vtanhf", 4},
534         {"asinhf", "vasinhf", 4},
535         {"acoshf", "vacoshf", 4},
536         {"atanhf", "vatanhf", 4},
537     };
538     addVectorizableFunctions(VecFuncs);
539     break;
540   }
541   case NoLibrary:
542     break;
543   }
544 }
545 
546 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
547   funcName = sanitizeFunctionName(funcName);
548   if (funcName.empty())
549     return false;
550 
551   std::vector<VecDesc>::const_iterator I = std::lower_bound(
552       VectorDescs.begin(), VectorDescs.end(), funcName,
553       compareWithScalarFnName);
554   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
555 }
556 
557 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
558                                                        unsigned VF) const {
559   F = sanitizeFunctionName(F);
560   if (F.empty())
561     return F;
562   std::vector<VecDesc>::const_iterator I = std::lower_bound(
563       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
564   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
565     if (I->VectorizationFactor == VF)
566       return I->VectorFnName;
567     ++I;
568   }
569   return StringRef();
570 }
571 
572 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
573                                                        unsigned &VF) const {
574   F = sanitizeFunctionName(F);
575   if (F.empty())
576     return F;
577 
578   std::vector<VecDesc>::const_iterator I = std::lower_bound(
579       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
580   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
581     return StringRef();
582   VF = I->VectorizationFactor;
583   return I->ScalarFnName;
584 }
585 
586 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M) {
587   if (PresetInfoImpl)
588     return TargetLibraryInfo(*PresetInfoImpl);
589 
590   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
591 }
592 
593 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F) {
594   if (PresetInfoImpl)
595     return TargetLibraryInfo(*PresetInfoImpl);
596 
597   return TargetLibraryInfo(
598       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
599 }
600 
601 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(Triple T) {
602   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
603       Impls[T.normalize()];
604   if (!Impl)
605     Impl.reset(new TargetLibraryInfoImpl(T));
606 
607   return *Impl;
608 }
609 
610 
611 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
612     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
613   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
614 }
615 
616 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
617     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
618   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
619 }
620 
621 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
622     const TargetLibraryInfoImpl &TLIImpl)
623     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
624   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
625 }
626 
627 char TargetLibraryAnalysis::PassID;
628 
629 // Register the basic pass.
630 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
631                 "Target Library Information", false, true)
632 char TargetLibraryInfoWrapperPass::ID = 0;
633 
634 void TargetLibraryInfoWrapperPass::anchor() {}
635