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/IR/Constants.h"
17 #include "llvm/Support/CommandLine.h"
18 using namespace llvm;
19 
20 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
21     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
22     cl::init(TargetLibraryInfoImpl::NoLibrary),
23     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
24                           "No vector functions library"),
25                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
26                           "Accelerate framework"),
27                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
28                           "Intel SVML library")));
29 
30 StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
31 #define TLI_DEFINE_STRING
32 #include "llvm/Analysis/TargetLibraryInfo.def"
33 };
34 
35 static bool hasSinCosPiStret(const Triple &T) {
36   // Only Darwin variants have _stret versions of combined trig functions.
37   if (!T.isOSDarwin())
38     return false;
39 
40   // The ABI is rather complicated on x86, so don't do anything special there.
41   if (T.getArch() == Triple::x86)
42     return false;
43 
44   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
45     return false;
46 
47   if (T.isiOS() && T.isOSVersionLT(7, 0))
48     return false;
49 
50   return true;
51 }
52 
53 /// Initialize the set of available library functions based on the specified
54 /// target triple. This should be carefully written so that a missing target
55 /// triple gets a sane set of defaults.
56 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
57                        ArrayRef<StringRef> StandardNames) {
58   // Verify that the StandardNames array is in alphabetical order.
59   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
60                         [](StringRef LHS, StringRef RHS) {
61                           return LHS < RHS;
62                         }) &&
63          "TargetLibraryInfoImpl function names must be sorted");
64 
65   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
66        ShouldSignExtI32Param = false;
67   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
68   // returns corresponding to C-level ints and unsigned ints.
69   if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le ||
70       T.getArch() == Triple::sparcv9 || T.getArch() == Triple::systemz) {
71     ShouldExtI32Param = true;
72     ShouldExtI32Return = true;
73   }
74   // Mips, on the other hand, needs signext on i32 parameters corresponding
75   // to both signed and unsigned ints.
76   if (T.getArch() == Triple::mips || T.getArch() == Triple::mipsel ||
77       T.getArch() == Triple::mips64 || T.getArch() == Triple::mips64el) {
78     ShouldSignExtI32Param = true;
79   }
80   TLI.setShouldExtI32Param(ShouldExtI32Param);
81   TLI.setShouldExtI32Return(ShouldExtI32Return);
82   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
83 
84   if (T.getArch() == Triple::r600 ||
85       T.getArch() == Triple::amdgcn) {
86     TLI.setUnavailable(LibFunc_ldexp);
87     TLI.setUnavailable(LibFunc_ldexpf);
88     TLI.setUnavailable(LibFunc_ldexpl);
89     TLI.setUnavailable(LibFunc_exp10);
90     TLI.setUnavailable(LibFunc_exp10f);
91     TLI.setUnavailable(LibFunc_exp10l);
92     TLI.setUnavailable(LibFunc_log10);
93     TLI.setUnavailable(LibFunc_log10f);
94     TLI.setUnavailable(LibFunc_log10l);
95   }
96 
97   // There are no library implementations of mempcy and memset for AMD gpus and
98   // these can be difficult to lower in the backend.
99   if (T.getArch() == Triple::r600 ||
100       T.getArch() == Triple::amdgcn) {
101     TLI.setUnavailable(LibFunc_memcpy);
102     TLI.setUnavailable(LibFunc_memset);
103     TLI.setUnavailable(LibFunc_memset_pattern16);
104     return;
105   }
106 
107   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
108   // All versions of watchOS support it.
109   if (T.isMacOSX()) {
110     if (T.isMacOSXVersionLT(10, 5))
111       TLI.setUnavailable(LibFunc_memset_pattern16);
112   } else if (T.isiOS()) {
113     if (T.isOSVersionLT(3, 0))
114       TLI.setUnavailable(LibFunc_memset_pattern16);
115   } else if (!T.isWatchOS()) {
116     TLI.setUnavailable(LibFunc_memset_pattern16);
117   }
118 
119   if (!hasSinCosPiStret(T)) {
120     TLI.setUnavailable(LibFunc_sinpi);
121     TLI.setUnavailable(LibFunc_sinpif);
122     TLI.setUnavailable(LibFunc_cospi);
123     TLI.setUnavailable(LibFunc_cospif);
124     TLI.setUnavailable(LibFunc_sincospi_stret);
125     TLI.setUnavailable(LibFunc_sincospif_stret);
126   }
127 
128   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
129       !T.isMacOSXVersionLT(10, 7)) {
130     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
131     // we don't care about) have two versions; on recent OSX, the one we want
132     // has a $UNIX2003 suffix. The two implementations are identical except
133     // for the return value in some edge cases.  However, we don't want to
134     // generate code that depends on the old symbols.
135     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
136     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
137   }
138 
139   // iprintf and friends are only available on XCore and TCE.
140   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
141     TLI.setUnavailable(LibFunc_iprintf);
142     TLI.setUnavailable(LibFunc_siprintf);
143     TLI.setUnavailable(LibFunc_fiprintf);
144   }
145 
146   if (T.isOSWindows() && !T.isOSCygMing()) {
147     // Win32 does not support long double
148     TLI.setUnavailable(LibFunc_acosl);
149     TLI.setUnavailable(LibFunc_asinl);
150     TLI.setUnavailable(LibFunc_atanl);
151     TLI.setUnavailable(LibFunc_atan2l);
152     TLI.setUnavailable(LibFunc_ceill);
153     TLI.setUnavailable(LibFunc_copysignl);
154     TLI.setUnavailable(LibFunc_cosl);
155     TLI.setUnavailable(LibFunc_coshl);
156     TLI.setUnavailable(LibFunc_expl);
157     TLI.setUnavailable(LibFunc_fabsf); // Win32 and Win64 both lack fabsf
158     TLI.setUnavailable(LibFunc_fabsl);
159     TLI.setUnavailable(LibFunc_floorl);
160     TLI.setUnavailable(LibFunc_fmaxl);
161     TLI.setUnavailable(LibFunc_fminl);
162     TLI.setUnavailable(LibFunc_fmodl);
163     TLI.setUnavailable(LibFunc_frexpl);
164     TLI.setUnavailable(LibFunc_ldexpf);
165     TLI.setUnavailable(LibFunc_ldexpl);
166     TLI.setUnavailable(LibFunc_logl);
167     TLI.setUnavailable(LibFunc_modfl);
168     TLI.setUnavailable(LibFunc_powl);
169     TLI.setUnavailable(LibFunc_sinl);
170     TLI.setUnavailable(LibFunc_sinhl);
171     TLI.setUnavailable(LibFunc_sqrtl);
172     TLI.setUnavailable(LibFunc_tanl);
173     TLI.setUnavailable(LibFunc_tanhl);
174 
175     // Win32 only has C89 math
176     TLI.setUnavailable(LibFunc_acosh);
177     TLI.setUnavailable(LibFunc_acoshf);
178     TLI.setUnavailable(LibFunc_acoshl);
179     TLI.setUnavailable(LibFunc_asinh);
180     TLI.setUnavailable(LibFunc_asinhf);
181     TLI.setUnavailable(LibFunc_asinhl);
182     TLI.setUnavailable(LibFunc_atanh);
183     TLI.setUnavailable(LibFunc_atanhf);
184     TLI.setUnavailable(LibFunc_atanhl);
185     TLI.setUnavailable(LibFunc_cabs);
186     TLI.setUnavailable(LibFunc_cabsf);
187     TLI.setUnavailable(LibFunc_cabsl);
188     TLI.setUnavailable(LibFunc_cbrt);
189     TLI.setUnavailable(LibFunc_cbrtf);
190     TLI.setUnavailable(LibFunc_cbrtl);
191     TLI.setUnavailable(LibFunc_exp2);
192     TLI.setUnavailable(LibFunc_exp2f);
193     TLI.setUnavailable(LibFunc_exp2l);
194     TLI.setUnavailable(LibFunc_expm1);
195     TLI.setUnavailable(LibFunc_expm1f);
196     TLI.setUnavailable(LibFunc_expm1l);
197     TLI.setUnavailable(LibFunc_log2);
198     TLI.setUnavailable(LibFunc_log2f);
199     TLI.setUnavailable(LibFunc_log2l);
200     TLI.setUnavailable(LibFunc_log1p);
201     TLI.setUnavailable(LibFunc_log1pf);
202     TLI.setUnavailable(LibFunc_log1pl);
203     TLI.setUnavailable(LibFunc_logb);
204     TLI.setUnavailable(LibFunc_logbf);
205     TLI.setUnavailable(LibFunc_logbl);
206     TLI.setUnavailable(LibFunc_nearbyint);
207     TLI.setUnavailable(LibFunc_nearbyintf);
208     TLI.setUnavailable(LibFunc_nearbyintl);
209     TLI.setUnavailable(LibFunc_rint);
210     TLI.setUnavailable(LibFunc_rintf);
211     TLI.setUnavailable(LibFunc_rintl);
212     TLI.setUnavailable(LibFunc_round);
213     TLI.setUnavailable(LibFunc_roundf);
214     TLI.setUnavailable(LibFunc_roundl);
215     TLI.setUnavailable(LibFunc_trunc);
216     TLI.setUnavailable(LibFunc_truncf);
217     TLI.setUnavailable(LibFunc_truncl);
218 
219     // Win32 provides some C99 math with mangled names
220     TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
221 
222     if (T.getArch() == Triple::x86) {
223       // Win32 on x86 implements single-precision math functions as macros
224       TLI.setUnavailable(LibFunc_acosf);
225       TLI.setUnavailable(LibFunc_asinf);
226       TLI.setUnavailable(LibFunc_atanf);
227       TLI.setUnavailable(LibFunc_atan2f);
228       TLI.setUnavailable(LibFunc_ceilf);
229       TLI.setUnavailable(LibFunc_copysignf);
230       TLI.setUnavailable(LibFunc_cosf);
231       TLI.setUnavailable(LibFunc_coshf);
232       TLI.setUnavailable(LibFunc_expf);
233       TLI.setUnavailable(LibFunc_floorf);
234       TLI.setUnavailable(LibFunc_fminf);
235       TLI.setUnavailable(LibFunc_fmaxf);
236       TLI.setUnavailable(LibFunc_fmodf);
237       TLI.setUnavailable(LibFunc_logf);
238       TLI.setUnavailable(LibFunc_log10f);
239       TLI.setUnavailable(LibFunc_modff);
240       TLI.setUnavailable(LibFunc_powf);
241       TLI.setUnavailable(LibFunc_sinf);
242       TLI.setUnavailable(LibFunc_sinhf);
243       TLI.setUnavailable(LibFunc_sqrtf);
244       TLI.setUnavailable(LibFunc_tanf);
245       TLI.setUnavailable(LibFunc_tanhf);
246     }
247 
248     // Win32 does *not* provide provide these functions, but they are
249     // generally available on POSIX-compliant systems:
250     TLI.setUnavailable(LibFunc_access);
251     TLI.setUnavailable(LibFunc_bcmp);
252     TLI.setUnavailable(LibFunc_bcopy);
253     TLI.setUnavailable(LibFunc_bzero);
254     TLI.setUnavailable(LibFunc_chmod);
255     TLI.setUnavailable(LibFunc_chown);
256     TLI.setUnavailable(LibFunc_closedir);
257     TLI.setUnavailable(LibFunc_ctermid);
258     TLI.setUnavailable(LibFunc_fdopen);
259     TLI.setUnavailable(LibFunc_ffs);
260     TLI.setUnavailable(LibFunc_fileno);
261     TLI.setUnavailable(LibFunc_flockfile);
262     TLI.setUnavailable(LibFunc_fseeko);
263     TLI.setUnavailable(LibFunc_fstat);
264     TLI.setUnavailable(LibFunc_fstatvfs);
265     TLI.setUnavailable(LibFunc_ftello);
266     TLI.setUnavailable(LibFunc_ftrylockfile);
267     TLI.setUnavailable(LibFunc_funlockfile);
268     TLI.setUnavailable(LibFunc_getc_unlocked);
269     TLI.setUnavailable(LibFunc_getitimer);
270     TLI.setUnavailable(LibFunc_getlogin_r);
271     TLI.setUnavailable(LibFunc_getpwnam);
272     TLI.setUnavailable(LibFunc_gettimeofday);
273     TLI.setUnavailable(LibFunc_htonl);
274     TLI.setUnavailable(LibFunc_htons);
275     TLI.setUnavailable(LibFunc_lchown);
276     TLI.setUnavailable(LibFunc_lstat);
277     TLI.setUnavailable(LibFunc_memccpy);
278     TLI.setUnavailable(LibFunc_mkdir);
279     TLI.setUnavailable(LibFunc_ntohl);
280     TLI.setUnavailable(LibFunc_ntohs);
281     TLI.setUnavailable(LibFunc_open);
282     TLI.setUnavailable(LibFunc_opendir);
283     TLI.setUnavailable(LibFunc_pclose);
284     TLI.setUnavailable(LibFunc_popen);
285     TLI.setUnavailable(LibFunc_pread);
286     TLI.setUnavailable(LibFunc_pwrite);
287     TLI.setUnavailable(LibFunc_read);
288     TLI.setUnavailable(LibFunc_readlink);
289     TLI.setUnavailable(LibFunc_realpath);
290     TLI.setUnavailable(LibFunc_rmdir);
291     TLI.setUnavailable(LibFunc_setitimer);
292     TLI.setUnavailable(LibFunc_stat);
293     TLI.setUnavailable(LibFunc_statvfs);
294     TLI.setUnavailable(LibFunc_stpcpy);
295     TLI.setUnavailable(LibFunc_stpncpy);
296     TLI.setUnavailable(LibFunc_strcasecmp);
297     TLI.setUnavailable(LibFunc_strncasecmp);
298     TLI.setUnavailable(LibFunc_times);
299     TLI.setUnavailable(LibFunc_uname);
300     TLI.setUnavailable(LibFunc_unlink);
301     TLI.setUnavailable(LibFunc_unsetenv);
302     TLI.setUnavailable(LibFunc_utime);
303     TLI.setUnavailable(LibFunc_utimes);
304     TLI.setUnavailable(LibFunc_write);
305 
306     // Win32 does *not* provide provide these functions, but they are
307     // specified by C99:
308     TLI.setUnavailable(LibFunc_atoll);
309     TLI.setUnavailable(LibFunc_frexpf);
310     TLI.setUnavailable(LibFunc_llabs);
311   }
312 
313   switch (T.getOS()) {
314   case Triple::MacOSX:
315     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
316     // and their names are __exp10 and __exp10f. exp10l is not available on
317     // OS X or iOS.
318     TLI.setUnavailable(LibFunc_exp10l);
319     if (T.isMacOSXVersionLT(10, 9)) {
320       TLI.setUnavailable(LibFunc_exp10);
321       TLI.setUnavailable(LibFunc_exp10f);
322     } else {
323       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
324       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
325     }
326     break;
327   case Triple::IOS:
328   case Triple::TvOS:
329   case Triple::WatchOS:
330     TLI.setUnavailable(LibFunc_exp10l);
331     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
332                            (T.isOSVersionLT(9, 0) &&
333                             (T.getArch() == Triple::x86 ||
334                              T.getArch() == Triple::x86_64)))) {
335       TLI.setUnavailable(LibFunc_exp10);
336       TLI.setUnavailable(LibFunc_exp10f);
337     } else {
338       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
339       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
340     }
341     break;
342   case Triple::Linux:
343     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
344     // buggy prior to glibc version 2.18. Until this version is widely deployed
345     // or we have a reasonable detection strategy, we cannot use exp10 reliably
346     // on Linux.
347     //
348     // Fall through to disable all of them.
349     LLVM_FALLTHROUGH;
350   default:
351     TLI.setUnavailable(LibFunc_exp10);
352     TLI.setUnavailable(LibFunc_exp10f);
353     TLI.setUnavailable(LibFunc_exp10l);
354   }
355 
356   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
357   // Linux (GLIBC):
358   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
359   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
360   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
361   switch (T.getOS()) {
362   case Triple::Darwin:
363   case Triple::MacOSX:
364   case Triple::IOS:
365   case Triple::TvOS:
366   case Triple::WatchOS:
367   case Triple::FreeBSD:
368   case Triple::Linux:
369     break;
370   default:
371     TLI.setUnavailable(LibFunc_ffsl);
372   }
373 
374   // ffsll is available on at least FreeBSD and Linux (GLIBC):
375   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
376   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
377   switch (T.getOS()) {
378   case Triple::Darwin:
379   case Triple::MacOSX:
380   case Triple::IOS:
381   case Triple::TvOS:
382   case Triple::WatchOS:
383   case Triple::FreeBSD:
384   case Triple::Linux:
385     break;
386   default:
387     TLI.setUnavailable(LibFunc_ffsll);
388   }
389 
390   // The following functions are available on at least FreeBSD:
391   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
392   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
393   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
394   if (!T.isOSFreeBSD()) {
395     TLI.setUnavailable(LibFunc_fls);
396     TLI.setUnavailable(LibFunc_flsl);
397     TLI.setUnavailable(LibFunc_flsll);
398   }
399 
400   // The following functions are available on Linux,
401   // but Android uses bionic instead of glibc.
402   if (!T.isOSLinux() || T.isAndroid()) {
403     TLI.setUnavailable(LibFunc_dunder_strdup);
404     TLI.setUnavailable(LibFunc_dunder_strtok_r);
405     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
406     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
407     TLI.setUnavailable(LibFunc_under_IO_getc);
408     TLI.setUnavailable(LibFunc_under_IO_putc);
409     // But, Android has memalign.
410     if (!T.isAndroid())
411       TLI.setUnavailable(LibFunc_memalign);
412     TLI.setUnavailable(LibFunc_fopen64);
413     TLI.setUnavailable(LibFunc_fseeko64);
414     TLI.setUnavailable(LibFunc_fstat64);
415     TLI.setUnavailable(LibFunc_fstatvfs64);
416     TLI.setUnavailable(LibFunc_ftello64);
417     TLI.setUnavailable(LibFunc_lstat64);
418     TLI.setUnavailable(LibFunc_open64);
419     TLI.setUnavailable(LibFunc_stat64);
420     TLI.setUnavailable(LibFunc_statvfs64);
421     TLI.setUnavailable(LibFunc_tmpfile64);
422 
423     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
424     TLI.setUnavailable(LibFunc_acos_finite);
425     TLI.setUnavailable(LibFunc_acosf_finite);
426     TLI.setUnavailable(LibFunc_acosl_finite);
427     TLI.setUnavailable(LibFunc_acosh_finite);
428     TLI.setUnavailable(LibFunc_acoshf_finite);
429     TLI.setUnavailable(LibFunc_acoshl_finite);
430     TLI.setUnavailable(LibFunc_asin_finite);
431     TLI.setUnavailable(LibFunc_asinf_finite);
432     TLI.setUnavailable(LibFunc_asinl_finite);
433     TLI.setUnavailable(LibFunc_atan2_finite);
434     TLI.setUnavailable(LibFunc_atan2f_finite);
435     TLI.setUnavailable(LibFunc_atan2l_finite);
436     TLI.setUnavailable(LibFunc_atanh_finite);
437     TLI.setUnavailable(LibFunc_atanhf_finite);
438     TLI.setUnavailable(LibFunc_atanhl_finite);
439     TLI.setUnavailable(LibFunc_cosh_finite);
440     TLI.setUnavailable(LibFunc_coshf_finite);
441     TLI.setUnavailable(LibFunc_coshl_finite);
442     TLI.setUnavailable(LibFunc_exp10_finite);
443     TLI.setUnavailable(LibFunc_exp10f_finite);
444     TLI.setUnavailable(LibFunc_exp10l_finite);
445     TLI.setUnavailable(LibFunc_exp2_finite);
446     TLI.setUnavailable(LibFunc_exp2f_finite);
447     TLI.setUnavailable(LibFunc_exp2l_finite);
448     TLI.setUnavailable(LibFunc_exp_finite);
449     TLI.setUnavailable(LibFunc_expf_finite);
450     TLI.setUnavailable(LibFunc_expl_finite);
451     TLI.setUnavailable(LibFunc_log10_finite);
452     TLI.setUnavailable(LibFunc_log10f_finite);
453     TLI.setUnavailable(LibFunc_log10l_finite);
454     TLI.setUnavailable(LibFunc_log2_finite);
455     TLI.setUnavailable(LibFunc_log2f_finite);
456     TLI.setUnavailable(LibFunc_log2l_finite);
457     TLI.setUnavailable(LibFunc_log_finite);
458     TLI.setUnavailable(LibFunc_logf_finite);
459     TLI.setUnavailable(LibFunc_logl_finite);
460     TLI.setUnavailable(LibFunc_pow_finite);
461     TLI.setUnavailable(LibFunc_powf_finite);
462     TLI.setUnavailable(LibFunc_powl_finite);
463     TLI.setUnavailable(LibFunc_sinh_finite);
464     TLI.setUnavailable(LibFunc_sinhf_finite);
465     TLI.setUnavailable(LibFunc_sinhl_finite);
466   }
467 
468   // As currently implemented in clang, NVPTX code has no standard library to
469   // speak of.  Headers provide a standard-ish library implementation, but many
470   // of the signatures are wrong -- for example, many libm functions are not
471   // extern "C".
472   //
473   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
474   // but only used functions are provided to llvm.  Moreover, most of the
475   // functions in libdevice don't map precisely to standard library functions.
476   //
477   // FIXME: Having no standard library prevents e.g. many fastmath
478   // optimizations, so this situation should be fixed.
479   if (T.isNVPTX()) {
480     TLI.disableAllFunctions();
481     TLI.setAvailable(LibFunc_nvvm_reflect);
482   } else {
483     TLI.setUnavailable(LibFunc_nvvm_reflect);
484   }
485 
486   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
487 }
488 
489 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
490   // Default to everything being available.
491   memset(AvailableArray, -1, sizeof(AvailableArray));
492 
493   initialize(*this, Triple(), StandardNames);
494 }
495 
496 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
497   // Default to everything being available.
498   memset(AvailableArray, -1, sizeof(AvailableArray));
499 
500   initialize(*this, T, StandardNames);
501 }
502 
503 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
504     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
505       ShouldExtI32Return(TLI.ShouldExtI32Return),
506       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
507   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
508   VectorDescs = TLI.VectorDescs;
509   ScalarDescs = TLI.ScalarDescs;
510 }
511 
512 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
513     : CustomNames(std::move(TLI.CustomNames)),
514       ShouldExtI32Param(TLI.ShouldExtI32Param),
515       ShouldExtI32Return(TLI.ShouldExtI32Return),
516       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
517   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
518             AvailableArray);
519   VectorDescs = TLI.VectorDescs;
520   ScalarDescs = TLI.ScalarDescs;
521 }
522 
523 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
524   CustomNames = TLI.CustomNames;
525   ShouldExtI32Param = TLI.ShouldExtI32Param;
526   ShouldExtI32Return = TLI.ShouldExtI32Return;
527   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
528   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
529   return *this;
530 }
531 
532 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
533   CustomNames = std::move(TLI.CustomNames);
534   ShouldExtI32Param = TLI.ShouldExtI32Param;
535   ShouldExtI32Return = TLI.ShouldExtI32Return;
536   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
537   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
538             AvailableArray);
539   return *this;
540 }
541 
542 static StringRef sanitizeFunctionName(StringRef funcName) {
543   // Filter out empty names and names containing null bytes, those can't be in
544   // our table.
545   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
546     return StringRef();
547 
548   // Check for \01 prefix that is used to mangle __asm declarations and
549   // strip it if present.
550   return GlobalValue::dropLLVMManglingEscape(funcName);
551 }
552 
553 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
554                                        LibFunc &F) const {
555   StringRef const *Start = &StandardNames[0];
556   StringRef const *End = &StandardNames[NumLibFuncs];
557 
558   funcName = sanitizeFunctionName(funcName);
559   if (funcName.empty())
560     return false;
561 
562   StringRef const *I = std::lower_bound(
563       Start, End, funcName, [](StringRef LHS, StringRef RHS) {
564         return LHS < RHS;
565       });
566   if (I != End && *I == funcName) {
567     F = (LibFunc)(I - Start);
568     return true;
569   }
570   return false;
571 }
572 
573 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
574                                                    LibFunc F,
575                                                    const DataLayout *DL) const {
576   LLVMContext &Ctx = FTy.getContext();
577   Type *PCharTy = Type::getInt8PtrTy(Ctx);
578   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
579   auto IsSizeTTy = [SizeTTy](Type *Ty) {
580     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
581   };
582   unsigned NumParams = FTy.getNumParams();
583 
584   switch (F) {
585   case LibFunc_strlen:
586     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
587             FTy.getReturnType()->isIntegerTy());
588 
589   case LibFunc_strchr:
590   case LibFunc_strrchr:
591     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
592             FTy.getParamType(0) == FTy.getReturnType() &&
593             FTy.getParamType(1)->isIntegerTy());
594 
595   case LibFunc_strtol:
596   case LibFunc_strtod:
597   case LibFunc_strtof:
598   case LibFunc_strtoul:
599   case LibFunc_strtoll:
600   case LibFunc_strtold:
601   case LibFunc_strtoull:
602     return ((NumParams == 2 || NumParams == 3) &&
603             FTy.getParamType(0)->isPointerTy() &&
604             FTy.getParamType(1)->isPointerTy());
605   case LibFunc_strcat:
606     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
607             FTy.getParamType(0) == FTy.getReturnType() &&
608             FTy.getParamType(1) == FTy.getReturnType());
609 
610   case LibFunc_strncat:
611     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
612             FTy.getParamType(0) == FTy.getReturnType() &&
613             FTy.getParamType(1) == FTy.getReturnType() &&
614             IsSizeTTy(FTy.getParamType(2)));
615 
616   case LibFunc_strcpy_chk:
617   case LibFunc_stpcpy_chk:
618     --NumParams;
619     if (!IsSizeTTy(FTy.getParamType(NumParams)))
620       return false;
621     LLVM_FALLTHROUGH;
622   case LibFunc_strcpy:
623   case LibFunc_stpcpy:
624     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
625             FTy.getParamType(0) == FTy.getParamType(1) &&
626             FTy.getParamType(0) == PCharTy);
627 
628   case LibFunc_strncpy_chk:
629   case LibFunc_stpncpy_chk:
630     --NumParams;
631     if (!IsSizeTTy(FTy.getParamType(NumParams)))
632       return false;
633     LLVM_FALLTHROUGH;
634   case LibFunc_strncpy:
635   case LibFunc_stpncpy:
636     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
637             FTy.getParamType(0) == FTy.getParamType(1) &&
638             FTy.getParamType(0) == PCharTy &&
639             IsSizeTTy(FTy.getParamType(2)));
640 
641   case LibFunc_strxfrm:
642     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
643             FTy.getParamType(1)->isPointerTy());
644 
645   case LibFunc_strcmp:
646     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
647             FTy.getParamType(0)->isPointerTy() &&
648             FTy.getParamType(0) == FTy.getParamType(1));
649 
650   case LibFunc_strncmp:
651     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
652             FTy.getParamType(0)->isPointerTy() &&
653             FTy.getParamType(0) == FTy.getParamType(1) &&
654             IsSizeTTy(FTy.getParamType(2)));
655 
656   case LibFunc_strspn:
657   case LibFunc_strcspn:
658     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
659             FTy.getParamType(0) == FTy.getParamType(1) &&
660             FTy.getReturnType()->isIntegerTy());
661 
662   case LibFunc_strcoll:
663   case LibFunc_strcasecmp:
664   case LibFunc_strncasecmp:
665     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
666             FTy.getParamType(1)->isPointerTy());
667 
668   case LibFunc_strstr:
669     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
670             FTy.getParamType(0)->isPointerTy() &&
671             FTy.getParamType(1)->isPointerTy());
672 
673   case LibFunc_strpbrk:
674     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
675             FTy.getReturnType() == FTy.getParamType(0) &&
676             FTy.getParamType(0) == FTy.getParamType(1));
677 
678   case LibFunc_strtok:
679   case LibFunc_strtok_r:
680     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
681   case LibFunc_scanf:
682   case LibFunc_setbuf:
683   case LibFunc_setvbuf:
684     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
685   case LibFunc_strdup:
686   case LibFunc_strndup:
687     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
688             FTy.getParamType(0)->isPointerTy());
689   case LibFunc_sscanf:
690   case LibFunc_stat:
691   case LibFunc_statvfs:
692   case LibFunc_siprintf:
693   case LibFunc_sprintf:
694     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
695             FTy.getParamType(1)->isPointerTy());
696   case LibFunc_snprintf:
697     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
698             FTy.getParamType(2)->isPointerTy());
699   case LibFunc_setitimer:
700     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
701             FTy.getParamType(2)->isPointerTy());
702   case LibFunc_system:
703     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
704   case LibFunc_malloc:
705     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
706   case LibFunc_memcmp:
707     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
708             FTy.getParamType(0)->isPointerTy() &&
709             FTy.getParamType(1)->isPointerTy());
710 
711   case LibFunc_memchr:
712   case LibFunc_memrchr:
713     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
714             FTy.getReturnType() == FTy.getParamType(0) &&
715             FTy.getParamType(1)->isIntegerTy(32) &&
716             IsSizeTTy(FTy.getParamType(2)));
717   case LibFunc_modf:
718   case LibFunc_modff:
719   case LibFunc_modfl:
720     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
721 
722   case LibFunc_memcpy_chk:
723   case LibFunc_memmove_chk:
724     --NumParams;
725     if (!IsSizeTTy(FTy.getParamType(NumParams)))
726       return false;
727     LLVM_FALLTHROUGH;
728   case LibFunc_memcpy:
729   case LibFunc_mempcpy:
730   case LibFunc_memmove:
731     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
732             FTy.getParamType(0)->isPointerTy() &&
733             FTy.getParamType(1)->isPointerTy() &&
734             IsSizeTTy(FTy.getParamType(2)));
735 
736   case LibFunc_memset_chk:
737     --NumParams;
738     if (!IsSizeTTy(FTy.getParamType(NumParams)))
739       return false;
740     LLVM_FALLTHROUGH;
741   case LibFunc_memset:
742     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
743             FTy.getParamType(0)->isPointerTy() &&
744             FTy.getParamType(1)->isIntegerTy() &&
745             IsSizeTTy(FTy.getParamType(2)));
746 
747   case LibFunc_memccpy:
748     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
749   case LibFunc_memalign:
750     return (FTy.getReturnType()->isPointerTy());
751   case LibFunc_realloc:
752   case LibFunc_reallocf:
753     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
754             FTy.getParamType(0) == FTy.getReturnType() &&
755             IsSizeTTy(FTy.getParamType(1)));
756   case LibFunc_read:
757     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
758   case LibFunc_rewind:
759   case LibFunc_rmdir:
760   case LibFunc_remove:
761   case LibFunc_realpath:
762     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
763   case LibFunc_rename:
764     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
765             FTy.getParamType(1)->isPointerTy());
766   case LibFunc_readlink:
767     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
768             FTy.getParamType(1)->isPointerTy());
769   case LibFunc_write:
770     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
771   case LibFunc_bcopy:
772   case LibFunc_bcmp:
773     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
774             FTy.getParamType(1)->isPointerTy());
775   case LibFunc_bzero:
776     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
777   case LibFunc_calloc:
778     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
779 
780   case LibFunc_atof:
781   case LibFunc_atoi:
782   case LibFunc_atol:
783   case LibFunc_atoll:
784   case LibFunc_ferror:
785   case LibFunc_getenv:
786   case LibFunc_getpwnam:
787   case LibFunc_iprintf:
788   case LibFunc_pclose:
789   case LibFunc_perror:
790   case LibFunc_printf:
791   case LibFunc_puts:
792   case LibFunc_uname:
793   case LibFunc_under_IO_getc:
794   case LibFunc_unlink:
795   case LibFunc_unsetenv:
796     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
797 
798   case LibFunc_access:
799   case LibFunc_chmod:
800   case LibFunc_chown:
801   case LibFunc_clearerr:
802   case LibFunc_closedir:
803   case LibFunc_ctermid:
804   case LibFunc_fclose:
805   case LibFunc_feof:
806   case LibFunc_fflush:
807   case LibFunc_fgetc:
808   case LibFunc_fileno:
809   case LibFunc_flockfile:
810   case LibFunc_free:
811   case LibFunc_fseek:
812   case LibFunc_fseeko64:
813   case LibFunc_fseeko:
814   case LibFunc_fsetpos:
815   case LibFunc_ftell:
816   case LibFunc_ftello64:
817   case LibFunc_ftello:
818   case LibFunc_ftrylockfile:
819   case LibFunc_funlockfile:
820   case LibFunc_getc:
821   case LibFunc_getc_unlocked:
822   case LibFunc_getlogin_r:
823   case LibFunc_mkdir:
824   case LibFunc_mktime:
825   case LibFunc_times:
826     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
827 
828   case LibFunc_fopen:
829     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
830             FTy.getParamType(0)->isPointerTy() &&
831             FTy.getParamType(1)->isPointerTy());
832   case LibFunc_fdopen:
833     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
834             FTy.getParamType(1)->isPointerTy());
835   case LibFunc_fputc:
836   case LibFunc_fstat:
837   case LibFunc_frexp:
838   case LibFunc_frexpf:
839   case LibFunc_frexpl:
840   case LibFunc_fstatvfs:
841     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
842   case LibFunc_fgets:
843     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
844             FTy.getParamType(2)->isPointerTy());
845   case LibFunc_fread:
846     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
847             FTy.getParamType(3)->isPointerTy());
848   case LibFunc_fwrite:
849     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
850             FTy.getParamType(0)->isPointerTy() &&
851             FTy.getParamType(1)->isIntegerTy() &&
852             FTy.getParamType(2)->isIntegerTy() &&
853             FTy.getParamType(3)->isPointerTy());
854   case LibFunc_fputs:
855     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
856             FTy.getParamType(1)->isPointerTy());
857   case LibFunc_fscanf:
858   case LibFunc_fiprintf:
859   case LibFunc_fprintf:
860     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
861             FTy.getParamType(0)->isPointerTy() &&
862             FTy.getParamType(1)->isPointerTy());
863   case LibFunc_fgetpos:
864     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
865             FTy.getParamType(1)->isPointerTy());
866   case LibFunc_getchar:
867     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
868   case LibFunc_gets:
869     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
870   case LibFunc_getitimer:
871     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
872   case LibFunc_ungetc:
873     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
874   case LibFunc_utime:
875   case LibFunc_utimes:
876     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
877             FTy.getParamType(1)->isPointerTy());
878   case LibFunc_putc:
879     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
880   case LibFunc_pread:
881   case LibFunc_pwrite:
882     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
883   case LibFunc_popen:
884     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
885             FTy.getParamType(0)->isPointerTy() &&
886             FTy.getParamType(1)->isPointerTy());
887   case LibFunc_vscanf:
888     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
889   case LibFunc_vsscanf:
890     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
891             FTy.getParamType(2)->isPointerTy());
892   case LibFunc_vfscanf:
893     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
894             FTy.getParamType(2)->isPointerTy());
895   case LibFunc_valloc:
896     return (FTy.getReturnType()->isPointerTy());
897   case LibFunc_vprintf:
898     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
899   case LibFunc_vfprintf:
900   case LibFunc_vsprintf:
901     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
902             FTy.getParamType(1)->isPointerTy());
903   case LibFunc_vsnprintf:
904     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
905             FTy.getParamType(2)->isPointerTy());
906   case LibFunc_open:
907     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
908   case LibFunc_opendir:
909     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
910             FTy.getParamType(0)->isPointerTy());
911   case LibFunc_tmpfile:
912     return (FTy.getReturnType()->isPointerTy());
913   case LibFunc_htonl:
914   case LibFunc_ntohl:
915     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
916             FTy.getReturnType() == FTy.getParamType(0));
917   case LibFunc_htons:
918   case LibFunc_ntohs:
919     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
920             FTy.getReturnType() == FTy.getParamType(0));
921   case LibFunc_lstat:
922     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
923             FTy.getParamType(1)->isPointerTy());
924   case LibFunc_lchown:
925     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
926   case LibFunc_qsort:
927     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
928   case LibFunc_dunder_strdup:
929   case LibFunc_dunder_strndup:
930     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
931             FTy.getParamType(0)->isPointerTy());
932   case LibFunc_dunder_strtok_r:
933     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
934   case LibFunc_under_IO_putc:
935     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
936   case LibFunc_dunder_isoc99_scanf:
937     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
938   case LibFunc_stat64:
939   case LibFunc_lstat64:
940   case LibFunc_statvfs64:
941     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
942             FTy.getParamType(1)->isPointerTy());
943   case LibFunc_dunder_isoc99_sscanf:
944     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
945             FTy.getParamType(1)->isPointerTy());
946   case LibFunc_fopen64:
947     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
948             FTy.getParamType(0)->isPointerTy() &&
949             FTy.getParamType(1)->isPointerTy());
950   case LibFunc_tmpfile64:
951     return (FTy.getReturnType()->isPointerTy());
952   case LibFunc_fstat64:
953   case LibFunc_fstatvfs64:
954     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
955   case LibFunc_open64:
956     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
957   case LibFunc_gettimeofday:
958     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
959             FTy.getParamType(1)->isPointerTy());
960 
961   // new(unsigned int);
962   case LibFunc_Znwj:
963   // new(unsigned long);
964   case LibFunc_Znwm:
965   // new[](unsigned int);
966   case LibFunc_Znaj:
967   // new[](unsigned long);
968   case LibFunc_Znam:
969   // new(unsigned int);
970   case LibFunc_msvc_new_int:
971   // new(unsigned long long);
972   case LibFunc_msvc_new_longlong:
973   // new[](unsigned int);
974   case LibFunc_msvc_new_array_int:
975   // new[](unsigned long long);
976   case LibFunc_msvc_new_array_longlong:
977     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
978 
979   // new(unsigned int, nothrow);
980   case LibFunc_ZnwjRKSt9nothrow_t:
981   // new(unsigned long, nothrow);
982   case LibFunc_ZnwmRKSt9nothrow_t:
983   // new[](unsigned int, nothrow);
984   case LibFunc_ZnajRKSt9nothrow_t:
985   // new[](unsigned long, nothrow);
986   case LibFunc_ZnamRKSt9nothrow_t:
987   // new(unsigned int, nothrow);
988   case LibFunc_msvc_new_int_nothrow:
989   // new(unsigned long long, nothrow);
990   case LibFunc_msvc_new_longlong_nothrow:
991   // new[](unsigned int, nothrow);
992   case LibFunc_msvc_new_array_int_nothrow:
993   // new[](unsigned long long, nothrow);
994   case LibFunc_msvc_new_array_longlong_nothrow:
995     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
996 
997   // void operator delete[](void*);
998   case LibFunc_ZdaPv:
999   // void operator delete(void*);
1000   case LibFunc_ZdlPv:
1001   // void operator delete[](void*);
1002   case LibFunc_msvc_delete_array_ptr32:
1003   // void operator delete[](void*);
1004   case LibFunc_msvc_delete_array_ptr64:
1005   // void operator delete(void*);
1006   case LibFunc_msvc_delete_ptr32:
1007   // void operator delete(void*);
1008   case LibFunc_msvc_delete_ptr64:
1009     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1010 
1011   // void operator delete[](void*, nothrow);
1012   case LibFunc_ZdaPvRKSt9nothrow_t:
1013   // void operator delete[](void*, unsigned int);
1014   case LibFunc_ZdaPvj:
1015   // void operator delete[](void*, unsigned long);
1016   case LibFunc_ZdaPvm:
1017   // void operator delete(void*, nothrow);
1018   case LibFunc_ZdlPvRKSt9nothrow_t:
1019   // void operator delete(void*, unsigned int);
1020   case LibFunc_ZdlPvj:
1021   // void operator delete(void*, unsigned long);
1022   case LibFunc_ZdlPvm:
1023   // void operator delete[](void*, unsigned int);
1024   case LibFunc_msvc_delete_array_ptr32_int:
1025   // void operator delete[](void*, nothrow);
1026   case LibFunc_msvc_delete_array_ptr32_nothrow:
1027   // void operator delete[](void*, unsigned long long);
1028   case LibFunc_msvc_delete_array_ptr64_longlong:
1029   // void operator delete[](void*, nothrow);
1030   case LibFunc_msvc_delete_array_ptr64_nothrow:
1031   // void operator delete(void*, unsigned int);
1032   case LibFunc_msvc_delete_ptr32_int:
1033   // void operator delete(void*, nothrow);
1034   case LibFunc_msvc_delete_ptr32_nothrow:
1035   // void operator delete(void*, unsigned long long);
1036   case LibFunc_msvc_delete_ptr64_longlong:
1037   // void operator delete(void*, nothrow);
1038   case LibFunc_msvc_delete_ptr64_nothrow:
1039     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1040 
1041   case LibFunc_memset_pattern16:
1042     return (!FTy.isVarArg() && NumParams == 3 &&
1043             FTy.getParamType(0)->isPointerTy() &&
1044             FTy.getParamType(1)->isPointerTy() &&
1045             FTy.getParamType(2)->isIntegerTy());
1046 
1047   case LibFunc_cxa_guard_abort:
1048   case LibFunc_cxa_guard_acquire:
1049   case LibFunc_cxa_guard_release:
1050   case LibFunc_nvvm_reflect:
1051     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1052 
1053   case LibFunc_sincospi_stret:
1054   case LibFunc_sincospif_stret:
1055     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1056 
1057   case LibFunc_acos:
1058   case LibFunc_acos_finite:
1059   case LibFunc_acosf:
1060   case LibFunc_acosf_finite:
1061   case LibFunc_acosh:
1062   case LibFunc_acosh_finite:
1063   case LibFunc_acoshf:
1064   case LibFunc_acoshf_finite:
1065   case LibFunc_acoshl:
1066   case LibFunc_acoshl_finite:
1067   case LibFunc_acosl:
1068   case LibFunc_acosl_finite:
1069   case LibFunc_asin:
1070   case LibFunc_asin_finite:
1071   case LibFunc_asinf:
1072   case LibFunc_asinf_finite:
1073   case LibFunc_asinh:
1074   case LibFunc_asinhf:
1075   case LibFunc_asinhl:
1076   case LibFunc_asinl:
1077   case LibFunc_asinl_finite:
1078   case LibFunc_atan:
1079   case LibFunc_atanf:
1080   case LibFunc_atanh:
1081   case LibFunc_atanh_finite:
1082   case LibFunc_atanhf:
1083   case LibFunc_atanhf_finite:
1084   case LibFunc_atanhl:
1085   case LibFunc_atanhl_finite:
1086   case LibFunc_atanl:
1087   case LibFunc_cbrt:
1088   case LibFunc_cbrtf:
1089   case LibFunc_cbrtl:
1090   case LibFunc_ceil:
1091   case LibFunc_ceilf:
1092   case LibFunc_ceill:
1093   case LibFunc_cos:
1094   case LibFunc_cosf:
1095   case LibFunc_cosh:
1096   case LibFunc_cosh_finite:
1097   case LibFunc_coshf:
1098   case LibFunc_coshf_finite:
1099   case LibFunc_coshl:
1100   case LibFunc_coshl_finite:
1101   case LibFunc_cosl:
1102   case LibFunc_exp10:
1103   case LibFunc_exp10_finite:
1104   case LibFunc_exp10f:
1105   case LibFunc_exp10f_finite:
1106   case LibFunc_exp10l:
1107   case LibFunc_exp10l_finite:
1108   case LibFunc_exp2:
1109   case LibFunc_exp2_finite:
1110   case LibFunc_exp2f:
1111   case LibFunc_exp2f_finite:
1112   case LibFunc_exp2l:
1113   case LibFunc_exp2l_finite:
1114   case LibFunc_exp:
1115   case LibFunc_exp_finite:
1116   case LibFunc_expf:
1117   case LibFunc_expf_finite:
1118   case LibFunc_expl:
1119   case LibFunc_expl_finite:
1120   case LibFunc_expm1:
1121   case LibFunc_expm1f:
1122   case LibFunc_expm1l:
1123   case LibFunc_fabs:
1124   case LibFunc_fabsf:
1125   case LibFunc_fabsl:
1126   case LibFunc_floor:
1127   case LibFunc_floorf:
1128   case LibFunc_floorl:
1129   case LibFunc_log10:
1130   case LibFunc_log10_finite:
1131   case LibFunc_log10f:
1132   case LibFunc_log10f_finite:
1133   case LibFunc_log10l:
1134   case LibFunc_log10l_finite:
1135   case LibFunc_log1p:
1136   case LibFunc_log1pf:
1137   case LibFunc_log1pl:
1138   case LibFunc_log2:
1139   case LibFunc_log2_finite:
1140   case LibFunc_log2f:
1141   case LibFunc_log2f_finite:
1142   case LibFunc_log2l:
1143   case LibFunc_log2l_finite:
1144   case LibFunc_log:
1145   case LibFunc_log_finite:
1146   case LibFunc_logb:
1147   case LibFunc_logbf:
1148   case LibFunc_logbl:
1149   case LibFunc_logf:
1150   case LibFunc_logf_finite:
1151   case LibFunc_logl:
1152   case LibFunc_logl_finite:
1153   case LibFunc_nearbyint:
1154   case LibFunc_nearbyintf:
1155   case LibFunc_nearbyintl:
1156   case LibFunc_rint:
1157   case LibFunc_rintf:
1158   case LibFunc_rintl:
1159   case LibFunc_round:
1160   case LibFunc_roundf:
1161   case LibFunc_roundl:
1162   case LibFunc_sin:
1163   case LibFunc_sinf:
1164   case LibFunc_sinh:
1165   case LibFunc_sinh_finite:
1166   case LibFunc_sinhf:
1167   case LibFunc_sinhf_finite:
1168   case LibFunc_sinhl:
1169   case LibFunc_sinhl_finite:
1170   case LibFunc_sinl:
1171   case LibFunc_sqrt:
1172   case LibFunc_sqrt_finite:
1173   case LibFunc_sqrtf:
1174   case LibFunc_sqrtf_finite:
1175   case LibFunc_sqrtl:
1176   case LibFunc_sqrtl_finite:
1177   case LibFunc_tan:
1178   case LibFunc_tanf:
1179   case LibFunc_tanh:
1180   case LibFunc_tanhf:
1181   case LibFunc_tanhl:
1182   case LibFunc_tanl:
1183   case LibFunc_trunc:
1184   case LibFunc_truncf:
1185   case LibFunc_truncl:
1186     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1187             FTy.getReturnType() == FTy.getParamType(0));
1188 
1189   case LibFunc_atan2:
1190   case LibFunc_atan2_finite:
1191   case LibFunc_atan2f:
1192   case LibFunc_atan2f_finite:
1193   case LibFunc_atan2l:
1194   case LibFunc_atan2l_finite:
1195   case LibFunc_fmin:
1196   case LibFunc_fminf:
1197   case LibFunc_fminl:
1198   case LibFunc_fmax:
1199   case LibFunc_fmaxf:
1200   case LibFunc_fmaxl:
1201   case LibFunc_fmod:
1202   case LibFunc_fmodf:
1203   case LibFunc_fmodl:
1204   case LibFunc_copysign:
1205   case LibFunc_copysignf:
1206   case LibFunc_copysignl:
1207   case LibFunc_pow:
1208   case LibFunc_pow_finite:
1209   case LibFunc_powf:
1210   case LibFunc_powf_finite:
1211   case LibFunc_powl:
1212   case LibFunc_powl_finite:
1213     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1214             FTy.getReturnType() == FTy.getParamType(0) &&
1215             FTy.getReturnType() == FTy.getParamType(1));
1216 
1217   case LibFunc_ldexp:
1218   case LibFunc_ldexpf:
1219   case LibFunc_ldexpl:
1220     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1221             FTy.getReturnType() == FTy.getParamType(0) &&
1222             FTy.getParamType(1)->isIntegerTy(32));
1223 
1224   case LibFunc_ffs:
1225   case LibFunc_ffsl:
1226   case LibFunc_ffsll:
1227   case LibFunc_fls:
1228   case LibFunc_flsl:
1229   case LibFunc_flsll:
1230     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1231             FTy.getParamType(0)->isIntegerTy());
1232 
1233   case LibFunc_isdigit:
1234   case LibFunc_isascii:
1235   case LibFunc_toascii:
1236   case LibFunc_putchar:
1237     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1238             FTy.getReturnType() == FTy.getParamType(0));
1239 
1240   case LibFunc_abs:
1241   case LibFunc_labs:
1242   case LibFunc_llabs:
1243     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1244             FTy.getReturnType() == FTy.getParamType(0));
1245 
1246   case LibFunc_cxa_atexit:
1247     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1248             FTy.getParamType(0)->isPointerTy() &&
1249             FTy.getParamType(1)->isPointerTy() &&
1250             FTy.getParamType(2)->isPointerTy());
1251 
1252   case LibFunc_sinpi:
1253   case LibFunc_cospi:
1254     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1255             FTy.getReturnType() == FTy.getParamType(0));
1256 
1257   case LibFunc_sinpif:
1258   case LibFunc_cospif:
1259     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1260             FTy.getReturnType() == FTy.getParamType(0));
1261 
1262   case LibFunc_strnlen:
1263     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1264             FTy.getParamType(0) == PCharTy &&
1265             FTy.getParamType(1) == SizeTTy);
1266 
1267   case LibFunc_posix_memalign:
1268     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1269             FTy.getParamType(0)->isPointerTy() &&
1270             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1271 
1272   case LibFunc_wcslen:
1273     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1274             FTy.getReturnType()->isIntegerTy());
1275 
1276   case LibFunc_cabs:
1277   case LibFunc_cabsf:
1278   case LibFunc_cabsl: {
1279     Type* RetTy = FTy.getReturnType();
1280     if (!RetTy->isFloatingPointTy())
1281       return false;
1282 
1283     // NOTE: These prototypes are target specific and currently support
1284     // "complex" passed as an array or discrete real & imaginary parameters.
1285     // Add other calling conventions to enable libcall optimizations.
1286     if (NumParams == 1)
1287       return (FTy.getParamType(0)->isArrayTy() &&
1288               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1289               FTy.getParamType(0)->getArrayElementType() == RetTy);
1290     else if (NumParams == 2)
1291       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1292     else
1293       return false;
1294   }
1295   case LibFunc::NumLibFuncs:
1296     break;
1297   }
1298 
1299   llvm_unreachable("Invalid libfunc");
1300 }
1301 
1302 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1303                                        LibFunc &F) const {
1304   const DataLayout *DL =
1305       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1306   return getLibFunc(FDecl.getName(), F) &&
1307          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1308 }
1309 
1310 void TargetLibraryInfoImpl::disableAllFunctions() {
1311   memset(AvailableArray, 0, sizeof(AvailableArray));
1312 }
1313 
1314 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1315   return LHS.ScalarFnName < RHS.ScalarFnName;
1316 }
1317 
1318 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1319   return LHS.VectorFnName < RHS.VectorFnName;
1320 }
1321 
1322 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1323   return LHS.ScalarFnName < S;
1324 }
1325 
1326 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1327   return LHS.VectorFnName < S;
1328 }
1329 
1330 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1331   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1332   std::sort(VectorDescs.begin(), VectorDescs.end(), compareByScalarFnName);
1333 
1334   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1335   std::sort(ScalarDescs.begin(), ScalarDescs.end(), compareByVectorFnName);
1336 }
1337 
1338 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1339     enum VectorLibrary VecLib) {
1340   switch (VecLib) {
1341   case Accelerate: {
1342     const VecDesc VecFuncs[] = {
1343         // Floating-Point Arithmetic and Auxiliary Functions
1344         {"ceilf", "vceilf", 4},
1345         {"fabsf", "vfabsf", 4},
1346         {"llvm.fabs.f32", "vfabsf", 4},
1347         {"floorf", "vfloorf", 4},
1348         {"sqrtf", "vsqrtf", 4},
1349         {"llvm.sqrt.f32", "vsqrtf", 4},
1350 
1351         // Exponential and Logarithmic Functions
1352         {"expf", "vexpf", 4},
1353         {"llvm.exp.f32", "vexpf", 4},
1354         {"expm1f", "vexpm1f", 4},
1355         {"logf", "vlogf", 4},
1356         {"llvm.log.f32", "vlogf", 4},
1357         {"log1pf", "vlog1pf", 4},
1358         {"log10f", "vlog10f", 4},
1359         {"llvm.log10.f32", "vlog10f", 4},
1360         {"logbf", "vlogbf", 4},
1361 
1362         // Trigonometric Functions
1363         {"sinf", "vsinf", 4},
1364         {"llvm.sin.f32", "vsinf", 4},
1365         {"cosf", "vcosf", 4},
1366         {"llvm.cos.f32", "vcosf", 4},
1367         {"tanf", "vtanf", 4},
1368         {"asinf", "vasinf", 4},
1369         {"acosf", "vacosf", 4},
1370         {"atanf", "vatanf", 4},
1371 
1372         // Hyperbolic Functions
1373         {"sinhf", "vsinhf", 4},
1374         {"coshf", "vcoshf", 4},
1375         {"tanhf", "vtanhf", 4},
1376         {"asinhf", "vasinhf", 4},
1377         {"acoshf", "vacoshf", 4},
1378         {"atanhf", "vatanhf", 4},
1379     };
1380     addVectorizableFunctions(VecFuncs);
1381     break;
1382   }
1383   case SVML: {
1384     const VecDesc VecFuncs[] = {
1385         {"sin", "__svml_sin2", 2},
1386         {"sin", "__svml_sin4", 4},
1387         {"sin", "__svml_sin8", 8},
1388 
1389         {"sinf", "__svml_sinf4", 4},
1390         {"sinf", "__svml_sinf8", 8},
1391         {"sinf", "__svml_sinf16", 16},
1392 
1393         {"cos", "__svml_cos2", 2},
1394         {"cos", "__svml_cos4", 4},
1395         {"cos", "__svml_cos8", 8},
1396 
1397         {"cosf", "__svml_cosf4", 4},
1398         {"cosf", "__svml_cosf8", 8},
1399         {"cosf", "__svml_cosf16", 16},
1400 
1401         {"pow", "__svml_pow2", 2},
1402         {"pow", "__svml_pow4", 4},
1403         {"pow", "__svml_pow8", 8},
1404 
1405         {"powf", "__svml_powf4", 4},
1406         {"powf", "__svml_powf8", 8},
1407         {"powf", "__svml_powf16", 16},
1408 
1409         { "__pow_finite", "__svml_pow2", 2 },
1410         { "__pow_finite", "__svml_pow4", 4 },
1411         { "__pow_finite", "__svml_pow8", 8 },
1412 
1413         { "__powf_finite", "__svml_powf4", 4 },
1414         { "__powf_finite", "__svml_powf8", 8 },
1415         { "__powf_finite", "__svml_powf16", 16 },
1416 
1417         {"llvm.pow.f64", "__svml_pow2", 2},
1418         {"llvm.pow.f64", "__svml_pow4", 4},
1419         {"llvm.pow.f64", "__svml_pow8", 8},
1420 
1421         {"llvm.pow.f32", "__svml_powf4", 4},
1422         {"llvm.pow.f32", "__svml_powf8", 8},
1423         {"llvm.pow.f32", "__svml_powf16", 16},
1424 
1425         {"exp", "__svml_exp2", 2},
1426         {"exp", "__svml_exp4", 4},
1427         {"exp", "__svml_exp8", 8},
1428 
1429         {"expf", "__svml_expf4", 4},
1430         {"expf", "__svml_expf8", 8},
1431         {"expf", "__svml_expf16", 16},
1432 
1433         { "__exp_finite", "__svml_exp2", 2 },
1434         { "__exp_finite", "__svml_exp4", 4 },
1435         { "__exp_finite", "__svml_exp8", 8 },
1436 
1437         { "__expf_finite", "__svml_expf4", 4 },
1438         { "__expf_finite", "__svml_expf8", 8 },
1439         { "__expf_finite", "__svml_expf16", 16 },
1440 
1441         {"llvm.exp.f64", "__svml_exp2", 2},
1442         {"llvm.exp.f64", "__svml_exp4", 4},
1443         {"llvm.exp.f64", "__svml_exp8", 8},
1444 
1445         {"llvm.exp.f32", "__svml_expf4", 4},
1446         {"llvm.exp.f32", "__svml_expf8", 8},
1447         {"llvm.exp.f32", "__svml_expf16", 16},
1448 
1449         {"log", "__svml_log2", 2},
1450         {"log", "__svml_log4", 4},
1451         {"log", "__svml_log8", 8},
1452 
1453         {"logf", "__svml_logf4", 4},
1454         {"logf", "__svml_logf8", 8},
1455         {"logf", "__svml_logf16", 16},
1456 
1457         { "__log_finite", "__svml_log2", 2 },
1458         { "__log_finite", "__svml_log4", 4 },
1459         { "__log_finite", "__svml_log8", 8 },
1460 
1461         { "__logf_finite", "__svml_logf4", 4 },
1462         { "__logf_finite", "__svml_logf8", 8 },
1463         { "__logf_finite", "__svml_logf16", 16 },
1464 
1465         {"llvm.log.f64", "__svml_log2", 2},
1466         {"llvm.log.f64", "__svml_log4", 4},
1467         {"llvm.log.f64", "__svml_log8", 8},
1468 
1469         {"llvm.log.f32", "__svml_logf4", 4},
1470         {"llvm.log.f32", "__svml_logf8", 8},
1471         {"llvm.log.f32", "__svml_logf16", 16},
1472     };
1473     addVectorizableFunctions(VecFuncs);
1474     break;
1475   }
1476   case NoLibrary:
1477     break;
1478   }
1479 }
1480 
1481 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1482   funcName = sanitizeFunctionName(funcName);
1483   if (funcName.empty())
1484     return false;
1485 
1486   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1487       VectorDescs.begin(), VectorDescs.end(), funcName,
1488       compareWithScalarFnName);
1489   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1490 }
1491 
1492 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1493                                                        unsigned VF) const {
1494   F = sanitizeFunctionName(F);
1495   if (F.empty())
1496     return F;
1497   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1498       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
1499   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1500     if (I->VectorizationFactor == VF)
1501       return I->VectorFnName;
1502     ++I;
1503   }
1504   return StringRef();
1505 }
1506 
1507 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1508                                                        unsigned &VF) const {
1509   F = sanitizeFunctionName(F);
1510   if (F.empty())
1511     return F;
1512 
1513   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1514       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
1515   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1516     return StringRef();
1517   VF = I->VectorizationFactor;
1518   return I->ScalarFnName;
1519 }
1520 
1521 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M,
1522                                              ModuleAnalysisManager &) {
1523   if (PresetInfoImpl)
1524     return TargetLibraryInfo(*PresetInfoImpl);
1525 
1526   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
1527 }
1528 
1529 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1530                                              FunctionAnalysisManager &) {
1531   if (PresetInfoImpl)
1532     return TargetLibraryInfo(*PresetInfoImpl);
1533 
1534   return TargetLibraryInfo(
1535       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1536 }
1537 
1538 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1539   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1540       Impls[T.normalize()];
1541   if (!Impl)
1542     Impl.reset(new TargetLibraryInfoImpl(T));
1543 
1544   return *Impl;
1545 }
1546 
1547 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1548   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1549       M.getModuleFlag("wchar_size")))
1550     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1551   return 0;
1552 }
1553 
1554 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1555     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1556   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1557 }
1558 
1559 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1560     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1561   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1562 }
1563 
1564 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1565     const TargetLibraryInfoImpl &TLIImpl)
1566     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1567   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1568 }
1569 
1570 AnalysisKey TargetLibraryAnalysis::Key;
1571 
1572 // Register the basic pass.
1573 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1574                 "Target Library Information", false, true)
1575 char TargetLibraryInfoWrapperPass::ID = 0;
1576 
1577 void TargetLibraryInfoWrapperPass::anchor() {}
1578