1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the TargetLibraryInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/Analysis/TargetLibraryInfo.h"
14 #include "llvm/ADT/Triple.h"
15 #include "llvm/IR/Constants.h"
16 #include "llvm/InitializePasses.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::MASSV, "MASSV",
28                           "IBM MASS vector library"),
29                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
30                           "Intel SVML library")));
31 
32 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
33     {
34 #define TLI_DEFINE_STRING
35 #include "llvm/Analysis/TargetLibraryInfo.def"
36 };
37 
38 static bool hasSinCosPiStret(const Triple &T) {
39   // Only Darwin variants have _stret versions of combined trig functions.
40   if (!T.isOSDarwin())
41     return false;
42 
43   // The ABI is rather complicated on x86, so don't do anything special there.
44   if (T.getArch() == Triple::x86)
45     return false;
46 
47   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
48     return false;
49 
50   if (T.isiOS() && T.isOSVersionLT(7, 0))
51     return false;
52 
53   return true;
54 }
55 
56 static bool hasBcmp(const Triple &TT) {
57   // Posix removed support from bcmp() in 2001, but the glibc and several
58   // implementations of the libc still have it.
59   if (TT.isOSLinux())
60     return TT.isGNUEnvironment() || TT.isMusl();
61   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
62   // not have it.
63   return TT.isOSFreeBSD() || TT.isOSSolaris();
64 }
65 
66 /// Initialize the set of available library functions based on the specified
67 /// target triple. This should be carefully written so that a missing target
68 /// triple gets a sane set of defaults.
69 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
70                        ArrayRef<StringLiteral> StandardNames) {
71   // Verify that the StandardNames array is in alphabetical order.
72   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
73                         [](StringRef LHS, StringRef RHS) {
74                           return LHS < RHS;
75                         }) &&
76          "TargetLibraryInfoImpl function names must be sorted");
77 
78   // Set IO unlocked variants as unavailable
79   // Set them as available per system below
80   TLI.setUnavailable(LibFunc_getchar_unlocked);
81   TLI.setUnavailable(LibFunc_putc_unlocked);
82   TLI.setUnavailable(LibFunc_putchar_unlocked);
83   TLI.setUnavailable(LibFunc_fputc_unlocked);
84   TLI.setUnavailable(LibFunc_fgetc_unlocked);
85   TLI.setUnavailable(LibFunc_fread_unlocked);
86   TLI.setUnavailable(LibFunc_fwrite_unlocked);
87   TLI.setUnavailable(LibFunc_fputs_unlocked);
88   TLI.setUnavailable(LibFunc_fgets_unlocked);
89 
90   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
91        ShouldSignExtI32Param = false;
92   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
93   // returns corresponding to C-level ints and unsigned ints.
94   if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
95       T.getArch() == Triple::systemz) {
96     ShouldExtI32Param = true;
97     ShouldExtI32Return = true;
98   }
99   // Mips, on the other hand, needs signext on i32 parameters corresponding
100   // to both signed and unsigned ints.
101   if (T.isMIPS()) {
102     ShouldSignExtI32Param = true;
103   }
104   TLI.setShouldExtI32Param(ShouldExtI32Param);
105   TLI.setShouldExtI32Return(ShouldExtI32Return);
106   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
107 
108   if (T.getArch() == Triple::r600 ||
109       T.getArch() == Triple::amdgcn)
110     TLI.disableAllFunctions();
111 
112   // There are no library implementations of memcpy and memset for AMD gpus and
113   // these can be difficult to lower in the backend.
114   if (T.getArch() == Triple::r600 ||
115       T.getArch() == Triple::amdgcn) {
116     TLI.setUnavailable(LibFunc_memcpy);
117     TLI.setUnavailable(LibFunc_memset);
118     TLI.setUnavailable(LibFunc_memset_pattern16);
119     return;
120   }
121 
122   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
123   // All versions of watchOS support it.
124   if (T.isMacOSX()) {
125     // available IO unlocked variants on Mac OS X
126     TLI.setAvailable(LibFunc_getc_unlocked);
127     TLI.setAvailable(LibFunc_getchar_unlocked);
128     TLI.setAvailable(LibFunc_putc_unlocked);
129     TLI.setAvailable(LibFunc_putchar_unlocked);
130 
131     if (T.isMacOSXVersionLT(10, 5))
132       TLI.setUnavailable(LibFunc_memset_pattern16);
133   } else if (T.isiOS()) {
134     if (T.isOSVersionLT(3, 0))
135       TLI.setUnavailable(LibFunc_memset_pattern16);
136   } else if (!T.isWatchOS()) {
137     TLI.setUnavailable(LibFunc_memset_pattern16);
138   }
139 
140   if (!hasSinCosPiStret(T)) {
141     TLI.setUnavailable(LibFunc_sinpi);
142     TLI.setUnavailable(LibFunc_sinpif);
143     TLI.setUnavailable(LibFunc_cospi);
144     TLI.setUnavailable(LibFunc_cospif);
145     TLI.setUnavailable(LibFunc_sincospi_stret);
146     TLI.setUnavailable(LibFunc_sincospif_stret);
147   }
148 
149   if (!hasBcmp(T))
150     TLI.setUnavailable(LibFunc_bcmp);
151 
152   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
153       !T.isMacOSXVersionLT(10, 7)) {
154     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
155     // we don't care about) have two versions; on recent OSX, the one we want
156     // has a $UNIX2003 suffix. The two implementations are identical except
157     // for the return value in some edge cases.  However, we don't want to
158     // generate code that depends on the old symbols.
159     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
160     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
161   }
162 
163   // iprintf and friends are only available on XCore, TCE, and Emscripten.
164   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
165       T.getOS() != Triple::Emscripten) {
166     TLI.setUnavailable(LibFunc_iprintf);
167     TLI.setUnavailable(LibFunc_siprintf);
168     TLI.setUnavailable(LibFunc_fiprintf);
169   }
170 
171   // __small_printf and friends are only available on Emscripten.
172   if (T.getOS() != Triple::Emscripten) {
173     TLI.setUnavailable(LibFunc_small_printf);
174     TLI.setUnavailable(LibFunc_small_sprintf);
175     TLI.setUnavailable(LibFunc_small_fprintf);
176   }
177 
178   if (T.isOSWindows() && !T.isOSCygMing()) {
179     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
180     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
181     // XXX: In order to use an MSVCRT older than VC19,
182     // the specific library version must be explicit in the target triple,
183     // e.g., x86_64-pc-windows-msvc18.
184     bool hasPartialC99 = true;
185     if (T.isKnownWindowsMSVCEnvironment()) {
186       unsigned Major, Minor, Micro;
187       T.getEnvironmentVersion(Major, Minor, Micro);
188       hasPartialC99 = (Major == 0 || Major >= 19);
189     }
190 
191     // Latest targets support C89 math functions, in part.
192     bool isARM = (T.getArch() == Triple::aarch64 ||
193                   T.getArch() == Triple::arm);
194     bool hasPartialFloat = (isARM ||
195                             T.getArch() == Triple::x86_64);
196 
197     // Win32 does not support float C89 math functions, in general.
198     if (!hasPartialFloat) {
199       TLI.setUnavailable(LibFunc_acosf);
200       TLI.setUnavailable(LibFunc_asinf);
201       TLI.setUnavailable(LibFunc_atan2f);
202       TLI.setUnavailable(LibFunc_atanf);
203       TLI.setUnavailable(LibFunc_ceilf);
204       TLI.setUnavailable(LibFunc_cosf);
205       TLI.setUnavailable(LibFunc_coshf);
206       TLI.setUnavailable(LibFunc_expf);
207       TLI.setUnavailable(LibFunc_floorf);
208       TLI.setUnavailable(LibFunc_fmodf);
209       TLI.setUnavailable(LibFunc_log10f);
210       TLI.setUnavailable(LibFunc_logf);
211       TLI.setUnavailable(LibFunc_modff);
212       TLI.setUnavailable(LibFunc_powf);
213       TLI.setUnavailable(LibFunc_sinf);
214       TLI.setUnavailable(LibFunc_sinhf);
215       TLI.setUnavailable(LibFunc_sqrtf);
216       TLI.setUnavailable(LibFunc_tanf);
217       TLI.setUnavailable(LibFunc_tanhf);
218     }
219     if (!isARM)
220       TLI.setUnavailable(LibFunc_fabsf);
221     TLI.setUnavailable(LibFunc_frexpf);
222     TLI.setUnavailable(LibFunc_ldexpf);
223 
224     // Win32 does not support long double C89 math functions.
225     TLI.setUnavailable(LibFunc_acosl);
226     TLI.setUnavailable(LibFunc_asinl);
227     TLI.setUnavailable(LibFunc_atan2l);
228     TLI.setUnavailable(LibFunc_atanl);
229     TLI.setUnavailable(LibFunc_ceill);
230     TLI.setUnavailable(LibFunc_cosl);
231     TLI.setUnavailable(LibFunc_coshl);
232     TLI.setUnavailable(LibFunc_expl);
233     TLI.setUnavailable(LibFunc_fabsl);
234     TLI.setUnavailable(LibFunc_floorl);
235     TLI.setUnavailable(LibFunc_fmodl);
236     TLI.setUnavailable(LibFunc_frexpl);
237     TLI.setUnavailable(LibFunc_ldexpl);
238     TLI.setUnavailable(LibFunc_log10l);
239     TLI.setUnavailable(LibFunc_logl);
240     TLI.setUnavailable(LibFunc_modfl);
241     TLI.setUnavailable(LibFunc_powl);
242     TLI.setUnavailable(LibFunc_sinl);
243     TLI.setUnavailable(LibFunc_sinhl);
244     TLI.setUnavailable(LibFunc_sqrtl);
245     TLI.setUnavailable(LibFunc_tanl);
246     TLI.setUnavailable(LibFunc_tanhl);
247 
248     // Win32 does not fully support C99 math functions.
249     if (!hasPartialC99) {
250       TLI.setUnavailable(LibFunc_acosh);
251       TLI.setUnavailable(LibFunc_acoshf);
252       TLI.setUnavailable(LibFunc_asinh);
253       TLI.setUnavailable(LibFunc_asinhf);
254       TLI.setUnavailable(LibFunc_atanh);
255       TLI.setUnavailable(LibFunc_atanhf);
256       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
257       TLI.setUnavailable(LibFunc_cabsf);
258       TLI.setUnavailable(LibFunc_cbrt);
259       TLI.setUnavailable(LibFunc_cbrtf);
260       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
261       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
262       TLI.setUnavailable(LibFunc_exp2);
263       TLI.setUnavailable(LibFunc_exp2f);
264       TLI.setUnavailable(LibFunc_expm1);
265       TLI.setUnavailable(LibFunc_expm1f);
266       TLI.setUnavailable(LibFunc_fmax);
267       TLI.setUnavailable(LibFunc_fmaxf);
268       TLI.setUnavailable(LibFunc_fmin);
269       TLI.setUnavailable(LibFunc_fminf);
270       TLI.setUnavailable(LibFunc_log1p);
271       TLI.setUnavailable(LibFunc_log1pf);
272       TLI.setUnavailable(LibFunc_log2);
273       TLI.setUnavailable(LibFunc_log2f);
274       TLI.setAvailableWithName(LibFunc_logb, "_logb");
275       if (hasPartialFloat)
276         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
277       else
278         TLI.setUnavailable(LibFunc_logbf);
279       TLI.setUnavailable(LibFunc_rint);
280       TLI.setUnavailable(LibFunc_rintf);
281       TLI.setUnavailable(LibFunc_round);
282       TLI.setUnavailable(LibFunc_roundf);
283       TLI.setUnavailable(LibFunc_trunc);
284       TLI.setUnavailable(LibFunc_truncf);
285     }
286 
287     // Win32 does not support long double C99 math functions.
288     TLI.setUnavailable(LibFunc_acoshl);
289     TLI.setUnavailable(LibFunc_asinhl);
290     TLI.setUnavailable(LibFunc_atanhl);
291     TLI.setUnavailable(LibFunc_cabsl);
292     TLI.setUnavailable(LibFunc_cbrtl);
293     TLI.setUnavailable(LibFunc_copysignl);
294     TLI.setUnavailable(LibFunc_exp2l);
295     TLI.setUnavailable(LibFunc_expm1l);
296     TLI.setUnavailable(LibFunc_fmaxl);
297     TLI.setUnavailable(LibFunc_fminl);
298     TLI.setUnavailable(LibFunc_log1pl);
299     TLI.setUnavailable(LibFunc_log2l);
300     TLI.setUnavailable(LibFunc_logbl);
301     TLI.setUnavailable(LibFunc_nearbyintl);
302     TLI.setUnavailable(LibFunc_rintl);
303     TLI.setUnavailable(LibFunc_roundl);
304     TLI.setUnavailable(LibFunc_truncl);
305 
306     // Win32 does not support these functions, but
307     // they are generally available on POSIX-compliant systems.
308     TLI.setUnavailable(LibFunc_access);
309     TLI.setUnavailable(LibFunc_bcmp);
310     TLI.setUnavailable(LibFunc_bcopy);
311     TLI.setUnavailable(LibFunc_bzero);
312     TLI.setUnavailable(LibFunc_chmod);
313     TLI.setUnavailable(LibFunc_chown);
314     TLI.setUnavailable(LibFunc_closedir);
315     TLI.setUnavailable(LibFunc_ctermid);
316     TLI.setUnavailable(LibFunc_fdopen);
317     TLI.setUnavailable(LibFunc_ffs);
318     TLI.setUnavailable(LibFunc_fileno);
319     TLI.setUnavailable(LibFunc_flockfile);
320     TLI.setUnavailable(LibFunc_fseeko);
321     TLI.setUnavailable(LibFunc_fstat);
322     TLI.setUnavailable(LibFunc_fstatvfs);
323     TLI.setUnavailable(LibFunc_ftello);
324     TLI.setUnavailable(LibFunc_ftrylockfile);
325     TLI.setUnavailable(LibFunc_funlockfile);
326     TLI.setUnavailable(LibFunc_getitimer);
327     TLI.setUnavailable(LibFunc_getlogin_r);
328     TLI.setUnavailable(LibFunc_getpwnam);
329     TLI.setUnavailable(LibFunc_gettimeofday);
330     TLI.setUnavailable(LibFunc_htonl);
331     TLI.setUnavailable(LibFunc_htons);
332     TLI.setUnavailable(LibFunc_lchown);
333     TLI.setUnavailable(LibFunc_lstat);
334     TLI.setUnavailable(LibFunc_memccpy);
335     TLI.setUnavailable(LibFunc_mkdir);
336     TLI.setUnavailable(LibFunc_ntohl);
337     TLI.setUnavailable(LibFunc_ntohs);
338     TLI.setUnavailable(LibFunc_open);
339     TLI.setUnavailable(LibFunc_opendir);
340     TLI.setUnavailable(LibFunc_pclose);
341     TLI.setUnavailable(LibFunc_popen);
342     TLI.setUnavailable(LibFunc_pread);
343     TLI.setUnavailable(LibFunc_pwrite);
344     TLI.setUnavailable(LibFunc_read);
345     TLI.setUnavailable(LibFunc_readlink);
346     TLI.setUnavailable(LibFunc_realpath);
347     TLI.setUnavailable(LibFunc_rmdir);
348     TLI.setUnavailable(LibFunc_setitimer);
349     TLI.setUnavailable(LibFunc_stat);
350     TLI.setUnavailable(LibFunc_statvfs);
351     TLI.setUnavailable(LibFunc_stpcpy);
352     TLI.setUnavailable(LibFunc_stpncpy);
353     TLI.setUnavailable(LibFunc_strcasecmp);
354     TLI.setUnavailable(LibFunc_strncasecmp);
355     TLI.setUnavailable(LibFunc_times);
356     TLI.setUnavailable(LibFunc_uname);
357     TLI.setUnavailable(LibFunc_unlink);
358     TLI.setUnavailable(LibFunc_unsetenv);
359     TLI.setUnavailable(LibFunc_utime);
360     TLI.setUnavailable(LibFunc_utimes);
361     TLI.setUnavailable(LibFunc_write);
362   }
363 
364   switch (T.getOS()) {
365   case Triple::MacOSX:
366     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
367     // and their names are __exp10 and __exp10f. exp10l is not available on
368     // OS X or iOS.
369     TLI.setUnavailable(LibFunc_exp10l);
370     if (T.isMacOSXVersionLT(10, 9)) {
371       TLI.setUnavailable(LibFunc_exp10);
372       TLI.setUnavailable(LibFunc_exp10f);
373     } else {
374       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
375       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
376     }
377     break;
378   case Triple::IOS:
379   case Triple::TvOS:
380   case Triple::WatchOS:
381     TLI.setUnavailable(LibFunc_exp10l);
382     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
383                            (T.isOSVersionLT(9, 0) &&
384                             (T.getArch() == Triple::x86 ||
385                              T.getArch() == Triple::x86_64)))) {
386       TLI.setUnavailable(LibFunc_exp10);
387       TLI.setUnavailable(LibFunc_exp10f);
388     } else {
389       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
390       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
391     }
392     break;
393   case Triple::Linux:
394     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
395     // buggy prior to glibc version 2.18. Until this version is widely deployed
396     // or we have a reasonable detection strategy, we cannot use exp10 reliably
397     // on Linux.
398     //
399     // Fall through to disable all of them.
400     LLVM_FALLTHROUGH;
401   default:
402     TLI.setUnavailable(LibFunc_exp10);
403     TLI.setUnavailable(LibFunc_exp10f);
404     TLI.setUnavailable(LibFunc_exp10l);
405   }
406 
407   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
408   // Linux (GLIBC):
409   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
410   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
411   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
412   switch (T.getOS()) {
413   case Triple::Darwin:
414   case Triple::MacOSX:
415   case Triple::IOS:
416   case Triple::TvOS:
417   case Triple::WatchOS:
418   case Triple::FreeBSD:
419   case Triple::Linux:
420     break;
421   default:
422     TLI.setUnavailable(LibFunc_ffsl);
423   }
424 
425   // ffsll is available on at least FreeBSD and Linux (GLIBC):
426   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
427   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
428   switch (T.getOS()) {
429   case Triple::Darwin:
430   case Triple::MacOSX:
431   case Triple::IOS:
432   case Triple::TvOS:
433   case Triple::WatchOS:
434   case Triple::FreeBSD:
435   case Triple::Linux:
436     break;
437   default:
438     TLI.setUnavailable(LibFunc_ffsll);
439   }
440 
441   // The following functions are available on at least FreeBSD:
442   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
443   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
444   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
445   if (!T.isOSFreeBSD()) {
446     TLI.setUnavailable(LibFunc_fls);
447     TLI.setUnavailable(LibFunc_flsl);
448     TLI.setUnavailable(LibFunc_flsll);
449   }
450 
451   // The following functions are only available on GNU/Linux (using glibc).
452   // Linux variants without glibc (eg: bionic, musl) may have some subset.
453   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
454     TLI.setUnavailable(LibFunc_dunder_strdup);
455     TLI.setUnavailable(LibFunc_dunder_strtok_r);
456     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
457     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
458     TLI.setUnavailable(LibFunc_under_IO_getc);
459     TLI.setUnavailable(LibFunc_under_IO_putc);
460     // But, Android and musl have memalign.
461     if (!T.isAndroid() && !T.isMusl())
462       TLI.setUnavailable(LibFunc_memalign);
463     TLI.setUnavailable(LibFunc_fopen64);
464     TLI.setUnavailable(LibFunc_fseeko64);
465     TLI.setUnavailable(LibFunc_fstat64);
466     TLI.setUnavailable(LibFunc_fstatvfs64);
467     TLI.setUnavailable(LibFunc_ftello64);
468     TLI.setUnavailable(LibFunc_lstat64);
469     TLI.setUnavailable(LibFunc_open64);
470     TLI.setUnavailable(LibFunc_stat64);
471     TLI.setUnavailable(LibFunc_statvfs64);
472     TLI.setUnavailable(LibFunc_tmpfile64);
473 
474     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
475     TLI.setUnavailable(LibFunc_acos_finite);
476     TLI.setUnavailable(LibFunc_acosf_finite);
477     TLI.setUnavailable(LibFunc_acosl_finite);
478     TLI.setUnavailable(LibFunc_acosh_finite);
479     TLI.setUnavailable(LibFunc_acoshf_finite);
480     TLI.setUnavailable(LibFunc_acoshl_finite);
481     TLI.setUnavailable(LibFunc_asin_finite);
482     TLI.setUnavailable(LibFunc_asinf_finite);
483     TLI.setUnavailable(LibFunc_asinl_finite);
484     TLI.setUnavailable(LibFunc_atan2_finite);
485     TLI.setUnavailable(LibFunc_atan2f_finite);
486     TLI.setUnavailable(LibFunc_atan2l_finite);
487     TLI.setUnavailable(LibFunc_atanh_finite);
488     TLI.setUnavailable(LibFunc_atanhf_finite);
489     TLI.setUnavailable(LibFunc_atanhl_finite);
490     TLI.setUnavailable(LibFunc_cosh_finite);
491     TLI.setUnavailable(LibFunc_coshf_finite);
492     TLI.setUnavailable(LibFunc_coshl_finite);
493     TLI.setUnavailable(LibFunc_exp10_finite);
494     TLI.setUnavailable(LibFunc_exp10f_finite);
495     TLI.setUnavailable(LibFunc_exp10l_finite);
496     TLI.setUnavailable(LibFunc_exp2_finite);
497     TLI.setUnavailable(LibFunc_exp2f_finite);
498     TLI.setUnavailable(LibFunc_exp2l_finite);
499     TLI.setUnavailable(LibFunc_exp_finite);
500     TLI.setUnavailable(LibFunc_expf_finite);
501     TLI.setUnavailable(LibFunc_expl_finite);
502     TLI.setUnavailable(LibFunc_log10_finite);
503     TLI.setUnavailable(LibFunc_log10f_finite);
504     TLI.setUnavailable(LibFunc_log10l_finite);
505     TLI.setUnavailable(LibFunc_log2_finite);
506     TLI.setUnavailable(LibFunc_log2f_finite);
507     TLI.setUnavailable(LibFunc_log2l_finite);
508     TLI.setUnavailable(LibFunc_log_finite);
509     TLI.setUnavailable(LibFunc_logf_finite);
510     TLI.setUnavailable(LibFunc_logl_finite);
511     TLI.setUnavailable(LibFunc_pow_finite);
512     TLI.setUnavailable(LibFunc_powf_finite);
513     TLI.setUnavailable(LibFunc_powl_finite);
514     TLI.setUnavailable(LibFunc_sinh_finite);
515     TLI.setUnavailable(LibFunc_sinhf_finite);
516     TLI.setUnavailable(LibFunc_sinhl_finite);
517   }
518 
519   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
520       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
521     // available IO unlocked variants on GNU/Linux and Android P or later
522     TLI.setAvailable(LibFunc_getc_unlocked);
523     TLI.setAvailable(LibFunc_getchar_unlocked);
524     TLI.setAvailable(LibFunc_putc_unlocked);
525     TLI.setAvailable(LibFunc_putchar_unlocked);
526     TLI.setAvailable(LibFunc_fputc_unlocked);
527     TLI.setAvailable(LibFunc_fgetc_unlocked);
528     TLI.setAvailable(LibFunc_fread_unlocked);
529     TLI.setAvailable(LibFunc_fwrite_unlocked);
530     TLI.setAvailable(LibFunc_fputs_unlocked);
531     TLI.setAvailable(LibFunc_fgets_unlocked);
532   }
533 
534   // As currently implemented in clang, NVPTX code has no standard library to
535   // speak of.  Headers provide a standard-ish library implementation, but many
536   // of the signatures are wrong -- for example, many libm functions are not
537   // extern "C".
538   //
539   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
540   // but only used functions are provided to llvm.  Moreover, most of the
541   // functions in libdevice don't map precisely to standard library functions.
542   //
543   // FIXME: Having no standard library prevents e.g. many fastmath
544   // optimizations, so this situation should be fixed.
545   if (T.isNVPTX()) {
546     TLI.disableAllFunctions();
547     TLI.setAvailable(LibFunc_nvvm_reflect);
548   } else {
549     TLI.setUnavailable(LibFunc_nvvm_reflect);
550   }
551 
552   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
553 }
554 
555 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
556   // Default to everything being available.
557   memset(AvailableArray, -1, sizeof(AvailableArray));
558 
559   initialize(*this, Triple(), StandardNames);
560 }
561 
562 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
563   // Default to everything being available.
564   memset(AvailableArray, -1, sizeof(AvailableArray));
565 
566   initialize(*this, T, StandardNames);
567 }
568 
569 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
570     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
571       ShouldExtI32Return(TLI.ShouldExtI32Return),
572       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
573   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
574   VectorDescs = TLI.VectorDescs;
575   ScalarDescs = TLI.ScalarDescs;
576 }
577 
578 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
579     : CustomNames(std::move(TLI.CustomNames)),
580       ShouldExtI32Param(TLI.ShouldExtI32Param),
581       ShouldExtI32Return(TLI.ShouldExtI32Return),
582       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
583   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
584             AvailableArray);
585   VectorDescs = TLI.VectorDescs;
586   ScalarDescs = TLI.ScalarDescs;
587 }
588 
589 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
590   CustomNames = TLI.CustomNames;
591   ShouldExtI32Param = TLI.ShouldExtI32Param;
592   ShouldExtI32Return = TLI.ShouldExtI32Return;
593   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
594   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
595   return *this;
596 }
597 
598 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
599   CustomNames = std::move(TLI.CustomNames);
600   ShouldExtI32Param = TLI.ShouldExtI32Param;
601   ShouldExtI32Return = TLI.ShouldExtI32Return;
602   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
603   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
604             AvailableArray);
605   return *this;
606 }
607 
608 static StringRef sanitizeFunctionName(StringRef funcName) {
609   // Filter out empty names and names containing null bytes, those can't be in
610   // our table.
611   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
612     return StringRef();
613 
614   // Check for \01 prefix that is used to mangle __asm declarations and
615   // strip it if present.
616   return GlobalValue::dropLLVMManglingEscape(funcName);
617 }
618 
619 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
620   funcName = sanitizeFunctionName(funcName);
621   if (funcName.empty())
622     return false;
623 
624   const auto *Start = std::begin(StandardNames);
625   const auto *End = std::end(StandardNames);
626   const auto *I = std::lower_bound(Start, End, funcName);
627   if (I != End && *I == funcName) {
628     F = (LibFunc)(I - Start);
629     return true;
630   }
631   return false;
632 }
633 
634 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
635                                                    LibFunc F,
636                                                    const DataLayout *DL) const {
637   LLVMContext &Ctx = FTy.getContext();
638   Type *PCharTy = Type::getInt8PtrTy(Ctx);
639   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
640   auto IsSizeTTy = [SizeTTy](Type *Ty) {
641     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
642   };
643   unsigned NumParams = FTy.getNumParams();
644 
645   switch (F) {
646   case LibFunc_execl:
647   case LibFunc_execlp:
648   case LibFunc_execle:
649     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
650             FTy.getParamType(1)->isPointerTy() &&
651             FTy.getReturnType()->isIntegerTy(32));
652   case LibFunc_execv:
653   case LibFunc_execvp:
654     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
655             FTy.getParamType(1)->isPointerTy() &&
656             FTy.getReturnType()->isIntegerTy(32));
657   case LibFunc_execvP:
658   case LibFunc_execvpe:
659   case LibFunc_execve:
660     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
661             FTy.getParamType(1)->isPointerTy() &&
662             FTy.getParamType(2)->isPointerTy() &&
663             FTy.getReturnType()->isIntegerTy(32));
664   case LibFunc_strlen:
665     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
666             FTy.getReturnType()->isIntegerTy());
667 
668   case LibFunc_strchr:
669   case LibFunc_strrchr:
670     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
671             FTy.getParamType(0) == FTy.getReturnType() &&
672             FTy.getParamType(1)->isIntegerTy());
673 
674   case LibFunc_strtol:
675   case LibFunc_strtod:
676   case LibFunc_strtof:
677   case LibFunc_strtoul:
678   case LibFunc_strtoll:
679   case LibFunc_strtold:
680   case LibFunc_strtoull:
681     return ((NumParams == 2 || NumParams == 3) &&
682             FTy.getParamType(0)->isPointerTy() &&
683             FTy.getParamType(1)->isPointerTy());
684   case LibFunc_strcat_chk:
685     --NumParams;
686     if (!IsSizeTTy(FTy.getParamType(NumParams)))
687       return false;
688     LLVM_FALLTHROUGH;
689   case LibFunc_strcat:
690     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
691             FTy.getParamType(0) == FTy.getReturnType() &&
692             FTy.getParamType(1) == FTy.getReturnType());
693 
694   case LibFunc_strncat_chk:
695     --NumParams;
696     if (!IsSizeTTy(FTy.getParamType(NumParams)))
697       return false;
698     LLVM_FALLTHROUGH;
699   case LibFunc_strncat:
700     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
701             FTy.getParamType(0) == FTy.getReturnType() &&
702             FTy.getParamType(1) == FTy.getReturnType() &&
703             IsSizeTTy(FTy.getParamType(2)));
704 
705   case LibFunc_strcpy_chk:
706   case LibFunc_stpcpy_chk:
707     --NumParams;
708     if (!IsSizeTTy(FTy.getParamType(NumParams)))
709       return false;
710     LLVM_FALLTHROUGH;
711   case LibFunc_strcpy:
712   case LibFunc_stpcpy:
713     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
714             FTy.getParamType(0) == FTy.getParamType(1) &&
715             FTy.getParamType(0) == PCharTy);
716 
717   case LibFunc_strlcat_chk:
718   case LibFunc_strlcpy_chk:
719     --NumParams;
720     if (!IsSizeTTy(FTy.getParamType(NumParams)))
721       return false;
722     LLVM_FALLTHROUGH;
723   case LibFunc_strlcat:
724   case LibFunc_strlcpy:
725     return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
726            FTy.getParamType(0)->isPointerTy() &&
727            FTy.getParamType(1)->isPointerTy() &&
728            IsSizeTTy(FTy.getParamType(2));
729 
730   case LibFunc_strncpy_chk:
731   case LibFunc_stpncpy_chk:
732     --NumParams;
733     if (!IsSizeTTy(FTy.getParamType(NumParams)))
734       return false;
735     LLVM_FALLTHROUGH;
736   case LibFunc_strncpy:
737   case LibFunc_stpncpy:
738     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
739             FTy.getParamType(0) == FTy.getParamType(1) &&
740             FTy.getParamType(0) == PCharTy &&
741             IsSizeTTy(FTy.getParamType(2)));
742 
743   case LibFunc_strxfrm:
744     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
745             FTy.getParamType(1)->isPointerTy());
746 
747   case LibFunc_strcmp:
748     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
749             FTy.getParamType(0)->isPointerTy() &&
750             FTy.getParamType(0) == FTy.getParamType(1));
751 
752   case LibFunc_strncmp:
753     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
754             FTy.getParamType(0)->isPointerTy() &&
755             FTy.getParamType(0) == FTy.getParamType(1) &&
756             IsSizeTTy(FTy.getParamType(2)));
757 
758   case LibFunc_strspn:
759   case LibFunc_strcspn:
760     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
761             FTy.getParamType(0) == FTy.getParamType(1) &&
762             FTy.getReturnType()->isIntegerTy());
763 
764   case LibFunc_strcoll:
765   case LibFunc_strcasecmp:
766   case LibFunc_strncasecmp:
767     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
768             FTy.getParamType(1)->isPointerTy());
769 
770   case LibFunc_strstr:
771     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
772             FTy.getParamType(0)->isPointerTy() &&
773             FTy.getParamType(1)->isPointerTy());
774 
775   case LibFunc_strpbrk:
776     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
777             FTy.getReturnType() == FTy.getParamType(0) &&
778             FTy.getParamType(0) == FTy.getParamType(1));
779 
780   case LibFunc_strtok:
781   case LibFunc_strtok_r:
782     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
783   case LibFunc_scanf:
784   case LibFunc_setbuf:
785   case LibFunc_setvbuf:
786     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
787   case LibFunc_strdup:
788   case LibFunc_strndup:
789     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
790             FTy.getParamType(0)->isPointerTy());
791   case LibFunc_sscanf:
792   case LibFunc_stat:
793   case LibFunc_statvfs:
794   case LibFunc_siprintf:
795   case LibFunc_small_sprintf:
796   case LibFunc_sprintf:
797     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
798             FTy.getParamType(1)->isPointerTy() &&
799             FTy.getReturnType()->isIntegerTy(32));
800 
801   case LibFunc_sprintf_chk:
802     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
803            FTy.getParamType(1)->isIntegerTy(32) &&
804            IsSizeTTy(FTy.getParamType(2)) &&
805            FTy.getParamType(3)->isPointerTy() &&
806            FTy.getReturnType()->isIntegerTy(32);
807 
808   case LibFunc_snprintf:
809     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
810             FTy.getParamType(2)->isPointerTy() &&
811             FTy.getReturnType()->isIntegerTy(32));
812 
813   case LibFunc_snprintf_chk:
814     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
815            IsSizeTTy(FTy.getParamType(1)) &&
816            FTy.getParamType(2)->isIntegerTy(32) &&
817            IsSizeTTy(FTy.getParamType(3)) &&
818            FTy.getParamType(4)->isPointerTy() &&
819            FTy.getReturnType()->isIntegerTy(32);
820 
821   case LibFunc_setitimer:
822     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
823             FTy.getParamType(2)->isPointerTy());
824   case LibFunc_system:
825     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
826   case LibFunc_malloc:
827     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
828   case LibFunc_memcmp:
829     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
830             FTy.getParamType(0)->isPointerTy() &&
831             FTy.getParamType(1)->isPointerTy());
832 
833   case LibFunc_memchr:
834   case LibFunc_memrchr:
835     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
836             FTy.getReturnType() == FTy.getParamType(0) &&
837             FTy.getParamType(1)->isIntegerTy(32) &&
838             IsSizeTTy(FTy.getParamType(2)));
839   case LibFunc_modf:
840   case LibFunc_modff:
841   case LibFunc_modfl:
842     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
843 
844   case LibFunc_memcpy_chk:
845   case LibFunc_memmove_chk:
846     --NumParams;
847     if (!IsSizeTTy(FTy.getParamType(NumParams)))
848       return false;
849     LLVM_FALLTHROUGH;
850   case LibFunc_memcpy:
851   case LibFunc_mempcpy:
852   case LibFunc_memmove:
853     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
854             FTy.getParamType(0)->isPointerTy() &&
855             FTy.getParamType(1)->isPointerTy() &&
856             IsSizeTTy(FTy.getParamType(2)));
857 
858   case LibFunc_memset_chk:
859     --NumParams;
860     if (!IsSizeTTy(FTy.getParamType(NumParams)))
861       return false;
862     LLVM_FALLTHROUGH;
863   case LibFunc_memset:
864     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
865             FTy.getParamType(0)->isPointerTy() &&
866             FTy.getParamType(1)->isIntegerTy() &&
867             IsSizeTTy(FTy.getParamType(2)));
868 
869   case LibFunc_memccpy_chk:
870       --NumParams;
871     if (!IsSizeTTy(FTy.getParamType(NumParams)))
872       return false;
873     LLVM_FALLTHROUGH;
874   case LibFunc_memccpy:
875     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
876   case LibFunc_memalign:
877     return (FTy.getReturnType()->isPointerTy());
878   case LibFunc_realloc:
879   case LibFunc_reallocf:
880     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
881             FTy.getParamType(0) == FTy.getReturnType() &&
882             IsSizeTTy(FTy.getParamType(1)));
883   case LibFunc_read:
884     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
885   case LibFunc_rewind:
886   case LibFunc_rmdir:
887   case LibFunc_remove:
888   case LibFunc_realpath:
889     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
890   case LibFunc_rename:
891     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
892             FTy.getParamType(1)->isPointerTy());
893   case LibFunc_readlink:
894     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
895             FTy.getParamType(1)->isPointerTy());
896   case LibFunc_write:
897     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
898   case LibFunc_bcopy:
899   case LibFunc_bcmp:
900     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
901             FTy.getParamType(1)->isPointerTy());
902   case LibFunc_bzero:
903     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
904   case LibFunc_calloc:
905     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
906 
907   case LibFunc_atof:
908   case LibFunc_atoi:
909   case LibFunc_atol:
910   case LibFunc_atoll:
911   case LibFunc_ferror:
912   case LibFunc_getenv:
913   case LibFunc_getpwnam:
914   case LibFunc_iprintf:
915   case LibFunc_small_printf:
916   case LibFunc_pclose:
917   case LibFunc_perror:
918   case LibFunc_printf:
919   case LibFunc_puts:
920   case LibFunc_uname:
921   case LibFunc_under_IO_getc:
922   case LibFunc_unlink:
923   case LibFunc_unsetenv:
924     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
925 
926   case LibFunc_access:
927   case LibFunc_chmod:
928   case LibFunc_chown:
929   case LibFunc_clearerr:
930   case LibFunc_closedir:
931   case LibFunc_ctermid:
932   case LibFunc_fclose:
933   case LibFunc_feof:
934   case LibFunc_fflush:
935   case LibFunc_fgetc:
936   case LibFunc_fgetc_unlocked:
937   case LibFunc_fileno:
938   case LibFunc_flockfile:
939   case LibFunc_free:
940   case LibFunc_fseek:
941   case LibFunc_fseeko64:
942   case LibFunc_fseeko:
943   case LibFunc_fsetpos:
944   case LibFunc_ftell:
945   case LibFunc_ftello64:
946   case LibFunc_ftello:
947   case LibFunc_ftrylockfile:
948   case LibFunc_funlockfile:
949   case LibFunc_getc:
950   case LibFunc_getc_unlocked:
951   case LibFunc_getlogin_r:
952   case LibFunc_mkdir:
953   case LibFunc_mktime:
954   case LibFunc_times:
955     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
956 
957   case LibFunc_fopen:
958     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
959             FTy.getParamType(0)->isPointerTy() &&
960             FTy.getParamType(1)->isPointerTy());
961   case LibFunc_fork:
962     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
963   case LibFunc_fdopen:
964     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
965             FTy.getParamType(1)->isPointerTy());
966   case LibFunc_fputc:
967   case LibFunc_fputc_unlocked:
968   case LibFunc_fstat:
969   case LibFunc_frexp:
970   case LibFunc_frexpf:
971   case LibFunc_frexpl:
972   case LibFunc_fstatvfs:
973     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
974   case LibFunc_fgets:
975   case LibFunc_fgets_unlocked:
976     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
977             FTy.getParamType(2)->isPointerTy());
978   case LibFunc_fread:
979   case LibFunc_fread_unlocked:
980     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
981             FTy.getParamType(3)->isPointerTy());
982   case LibFunc_fwrite:
983   case LibFunc_fwrite_unlocked:
984     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
985             FTy.getParamType(0)->isPointerTy() &&
986             FTy.getParamType(1)->isIntegerTy() &&
987             FTy.getParamType(2)->isIntegerTy() &&
988             FTy.getParamType(3)->isPointerTy());
989   case LibFunc_fputs:
990   case LibFunc_fputs_unlocked:
991     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
992             FTy.getParamType(1)->isPointerTy());
993   case LibFunc_fscanf:
994   case LibFunc_fiprintf:
995   case LibFunc_small_fprintf:
996   case LibFunc_fprintf:
997     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
998             FTy.getParamType(0)->isPointerTy() &&
999             FTy.getParamType(1)->isPointerTy());
1000   case LibFunc_fgetpos:
1001     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1002             FTy.getParamType(1)->isPointerTy());
1003   case LibFunc_getchar:
1004   case LibFunc_getchar_unlocked:
1005     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1006   case LibFunc_gets:
1007     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1008   case LibFunc_getitimer:
1009     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1010   case LibFunc_ungetc:
1011     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1012   case LibFunc_utime:
1013   case LibFunc_utimes:
1014     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1015             FTy.getParamType(1)->isPointerTy());
1016   case LibFunc_putc:
1017   case LibFunc_putc_unlocked:
1018     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1019   case LibFunc_pread:
1020   case LibFunc_pwrite:
1021     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1022   case LibFunc_popen:
1023     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1024             FTy.getParamType(0)->isPointerTy() &&
1025             FTy.getParamType(1)->isPointerTy());
1026   case LibFunc_vscanf:
1027     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1028   case LibFunc_vsscanf:
1029     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1030             FTy.getParamType(2)->isPointerTy());
1031   case LibFunc_vfscanf:
1032     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1033             FTy.getParamType(2)->isPointerTy());
1034   case LibFunc_valloc:
1035     return (FTy.getReturnType()->isPointerTy());
1036   case LibFunc_vprintf:
1037     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1038   case LibFunc_vfprintf:
1039   case LibFunc_vsprintf:
1040     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1041             FTy.getParamType(1)->isPointerTy());
1042   case LibFunc_vsprintf_chk:
1043     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1044            FTy.getParamType(1)->isIntegerTy(32) &&
1045            IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1046   case LibFunc_vsnprintf:
1047     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1048             FTy.getParamType(2)->isPointerTy());
1049   case LibFunc_vsnprintf_chk:
1050     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1051            FTy.getParamType(2)->isIntegerTy(32) &&
1052            IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1053   case LibFunc_open:
1054     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1055   case LibFunc_opendir:
1056     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1057             FTy.getParamType(0)->isPointerTy());
1058   case LibFunc_tmpfile:
1059     return (FTy.getReturnType()->isPointerTy());
1060   case LibFunc_htonl:
1061   case LibFunc_ntohl:
1062     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1063             FTy.getReturnType() == FTy.getParamType(0));
1064   case LibFunc_htons:
1065   case LibFunc_ntohs:
1066     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1067             FTy.getReturnType() == FTy.getParamType(0));
1068   case LibFunc_lstat:
1069     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1070             FTy.getParamType(1)->isPointerTy());
1071   case LibFunc_lchown:
1072     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1073   case LibFunc_qsort:
1074     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1075   case LibFunc_dunder_strdup:
1076   case LibFunc_dunder_strndup:
1077     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1078             FTy.getParamType(0)->isPointerTy());
1079   case LibFunc_dunder_strtok_r:
1080     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1081   case LibFunc_under_IO_putc:
1082     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1083   case LibFunc_dunder_isoc99_scanf:
1084     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1085   case LibFunc_stat64:
1086   case LibFunc_lstat64:
1087   case LibFunc_statvfs64:
1088     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1089             FTy.getParamType(1)->isPointerTy());
1090   case LibFunc_dunder_isoc99_sscanf:
1091     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1092             FTy.getParamType(1)->isPointerTy());
1093   case LibFunc_fopen64:
1094     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1095             FTy.getParamType(0)->isPointerTy() &&
1096             FTy.getParamType(1)->isPointerTy());
1097   case LibFunc_tmpfile64:
1098     return (FTy.getReturnType()->isPointerTy());
1099   case LibFunc_fstat64:
1100   case LibFunc_fstatvfs64:
1101     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1102   case LibFunc_open64:
1103     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1104   case LibFunc_gettimeofday:
1105     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1106             FTy.getParamType(1)->isPointerTy());
1107 
1108   // new(unsigned int);
1109   case LibFunc_Znwj:
1110   // new(unsigned long);
1111   case LibFunc_Znwm:
1112   // new[](unsigned int);
1113   case LibFunc_Znaj:
1114   // new[](unsigned long);
1115   case LibFunc_Znam:
1116   // new(unsigned int);
1117   case LibFunc_msvc_new_int:
1118   // new(unsigned long long);
1119   case LibFunc_msvc_new_longlong:
1120   // new[](unsigned int);
1121   case LibFunc_msvc_new_array_int:
1122   // new[](unsigned long long);
1123   case LibFunc_msvc_new_array_longlong:
1124     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1125 
1126   // new(unsigned int, nothrow);
1127   case LibFunc_ZnwjRKSt9nothrow_t:
1128   // new(unsigned long, nothrow);
1129   case LibFunc_ZnwmRKSt9nothrow_t:
1130   // new[](unsigned int, nothrow);
1131   case LibFunc_ZnajRKSt9nothrow_t:
1132   // new[](unsigned long, nothrow);
1133   case LibFunc_ZnamRKSt9nothrow_t:
1134   // new(unsigned int, nothrow);
1135   case LibFunc_msvc_new_int_nothrow:
1136   // new(unsigned long long, nothrow);
1137   case LibFunc_msvc_new_longlong_nothrow:
1138   // new[](unsigned int, nothrow);
1139   case LibFunc_msvc_new_array_int_nothrow:
1140   // new[](unsigned long long, nothrow);
1141   case LibFunc_msvc_new_array_longlong_nothrow:
1142   // new(unsigned int, align_val_t)
1143   case LibFunc_ZnwjSt11align_val_t:
1144   // new(unsigned long, align_val_t)
1145   case LibFunc_ZnwmSt11align_val_t:
1146   // new[](unsigned int, align_val_t)
1147   case LibFunc_ZnajSt11align_val_t:
1148   // new[](unsigned long, align_val_t)
1149   case LibFunc_ZnamSt11align_val_t:
1150     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1151 
1152   // new(unsigned int, align_val_t, nothrow)
1153   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1154   // new(unsigned long, align_val_t, nothrow)
1155   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1156   // new[](unsigned int, align_val_t, nothrow)
1157   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1158   // new[](unsigned long, align_val_t, nothrow)
1159   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1160     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1161 
1162   // void operator delete[](void*);
1163   case LibFunc_ZdaPv:
1164   // void operator delete(void*);
1165   case LibFunc_ZdlPv:
1166   // void operator delete[](void*);
1167   case LibFunc_msvc_delete_array_ptr32:
1168   // void operator delete[](void*);
1169   case LibFunc_msvc_delete_array_ptr64:
1170   // void operator delete(void*);
1171   case LibFunc_msvc_delete_ptr32:
1172   // void operator delete(void*);
1173   case LibFunc_msvc_delete_ptr64:
1174     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1175 
1176   // void operator delete[](void*, nothrow);
1177   case LibFunc_ZdaPvRKSt9nothrow_t:
1178   // void operator delete[](void*, unsigned int);
1179   case LibFunc_ZdaPvj:
1180   // void operator delete[](void*, unsigned long);
1181   case LibFunc_ZdaPvm:
1182   // void operator delete(void*, nothrow);
1183   case LibFunc_ZdlPvRKSt9nothrow_t:
1184   // void operator delete(void*, unsigned int);
1185   case LibFunc_ZdlPvj:
1186   // void operator delete(void*, unsigned long);
1187   case LibFunc_ZdlPvm:
1188   // void operator delete(void*, align_val_t)
1189   case LibFunc_ZdlPvSt11align_val_t:
1190   // void operator delete[](void*, align_val_t)
1191   case LibFunc_ZdaPvSt11align_val_t:
1192   // void operator delete[](void*, unsigned int);
1193   case LibFunc_msvc_delete_array_ptr32_int:
1194   // void operator delete[](void*, nothrow);
1195   case LibFunc_msvc_delete_array_ptr32_nothrow:
1196   // void operator delete[](void*, unsigned long long);
1197   case LibFunc_msvc_delete_array_ptr64_longlong:
1198   // void operator delete[](void*, nothrow);
1199   case LibFunc_msvc_delete_array_ptr64_nothrow:
1200   // void operator delete(void*, unsigned int);
1201   case LibFunc_msvc_delete_ptr32_int:
1202   // void operator delete(void*, nothrow);
1203   case LibFunc_msvc_delete_ptr32_nothrow:
1204   // void operator delete(void*, unsigned long long);
1205   case LibFunc_msvc_delete_ptr64_longlong:
1206   // void operator delete(void*, nothrow);
1207   case LibFunc_msvc_delete_ptr64_nothrow:
1208     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1209 
1210   // void operator delete(void*, align_val_t, nothrow)
1211   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1212   // void operator delete[](void*, align_val_t, nothrow)
1213   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1214     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1215 
1216   case LibFunc_memset_pattern16:
1217     return (!FTy.isVarArg() && NumParams == 3 &&
1218             FTy.getParamType(0)->isPointerTy() &&
1219             FTy.getParamType(1)->isPointerTy() &&
1220             FTy.getParamType(2)->isIntegerTy());
1221 
1222   case LibFunc_cxa_guard_abort:
1223   case LibFunc_cxa_guard_acquire:
1224   case LibFunc_cxa_guard_release:
1225   case LibFunc_nvvm_reflect:
1226     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1227 
1228   case LibFunc_sincospi_stret:
1229   case LibFunc_sincospif_stret:
1230     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1231 
1232   case LibFunc_acos:
1233   case LibFunc_acos_finite:
1234   case LibFunc_acosf:
1235   case LibFunc_acosf_finite:
1236   case LibFunc_acosh:
1237   case LibFunc_acosh_finite:
1238   case LibFunc_acoshf:
1239   case LibFunc_acoshf_finite:
1240   case LibFunc_acoshl:
1241   case LibFunc_acoshl_finite:
1242   case LibFunc_acosl:
1243   case LibFunc_acosl_finite:
1244   case LibFunc_asin:
1245   case LibFunc_asin_finite:
1246   case LibFunc_asinf:
1247   case LibFunc_asinf_finite:
1248   case LibFunc_asinh:
1249   case LibFunc_asinhf:
1250   case LibFunc_asinhl:
1251   case LibFunc_asinl:
1252   case LibFunc_asinl_finite:
1253   case LibFunc_atan:
1254   case LibFunc_atanf:
1255   case LibFunc_atanh:
1256   case LibFunc_atanh_finite:
1257   case LibFunc_atanhf:
1258   case LibFunc_atanhf_finite:
1259   case LibFunc_atanhl:
1260   case LibFunc_atanhl_finite:
1261   case LibFunc_atanl:
1262   case LibFunc_cbrt:
1263   case LibFunc_cbrtf:
1264   case LibFunc_cbrtl:
1265   case LibFunc_ceil:
1266   case LibFunc_ceilf:
1267   case LibFunc_ceill:
1268   case LibFunc_cos:
1269   case LibFunc_cosf:
1270   case LibFunc_cosh:
1271   case LibFunc_cosh_finite:
1272   case LibFunc_coshf:
1273   case LibFunc_coshf_finite:
1274   case LibFunc_coshl:
1275   case LibFunc_coshl_finite:
1276   case LibFunc_cosl:
1277   case LibFunc_exp10:
1278   case LibFunc_exp10_finite:
1279   case LibFunc_exp10f:
1280   case LibFunc_exp10f_finite:
1281   case LibFunc_exp10l:
1282   case LibFunc_exp10l_finite:
1283   case LibFunc_exp2:
1284   case LibFunc_exp2_finite:
1285   case LibFunc_exp2f:
1286   case LibFunc_exp2f_finite:
1287   case LibFunc_exp2l:
1288   case LibFunc_exp2l_finite:
1289   case LibFunc_exp:
1290   case LibFunc_exp_finite:
1291   case LibFunc_expf:
1292   case LibFunc_expf_finite:
1293   case LibFunc_expl:
1294   case LibFunc_expl_finite:
1295   case LibFunc_expm1:
1296   case LibFunc_expm1f:
1297   case LibFunc_expm1l:
1298   case LibFunc_fabs:
1299   case LibFunc_fabsf:
1300   case LibFunc_fabsl:
1301   case LibFunc_floor:
1302   case LibFunc_floorf:
1303   case LibFunc_floorl:
1304   case LibFunc_log10:
1305   case LibFunc_log10_finite:
1306   case LibFunc_log10f:
1307   case LibFunc_log10f_finite:
1308   case LibFunc_log10l:
1309   case LibFunc_log10l_finite:
1310   case LibFunc_log1p:
1311   case LibFunc_log1pf:
1312   case LibFunc_log1pl:
1313   case LibFunc_log2:
1314   case LibFunc_log2_finite:
1315   case LibFunc_log2f:
1316   case LibFunc_log2f_finite:
1317   case LibFunc_log2l:
1318   case LibFunc_log2l_finite:
1319   case LibFunc_log:
1320   case LibFunc_log_finite:
1321   case LibFunc_logb:
1322   case LibFunc_logbf:
1323   case LibFunc_logbl:
1324   case LibFunc_logf:
1325   case LibFunc_logf_finite:
1326   case LibFunc_logl:
1327   case LibFunc_logl_finite:
1328   case LibFunc_nearbyint:
1329   case LibFunc_nearbyintf:
1330   case LibFunc_nearbyintl:
1331   case LibFunc_rint:
1332   case LibFunc_rintf:
1333   case LibFunc_rintl:
1334   case LibFunc_round:
1335   case LibFunc_roundf:
1336   case LibFunc_roundl:
1337   case LibFunc_sin:
1338   case LibFunc_sinf:
1339   case LibFunc_sinh:
1340   case LibFunc_sinh_finite:
1341   case LibFunc_sinhf:
1342   case LibFunc_sinhf_finite:
1343   case LibFunc_sinhl:
1344   case LibFunc_sinhl_finite:
1345   case LibFunc_sinl:
1346   case LibFunc_sqrt:
1347   case LibFunc_sqrt_finite:
1348   case LibFunc_sqrtf:
1349   case LibFunc_sqrtf_finite:
1350   case LibFunc_sqrtl:
1351   case LibFunc_sqrtl_finite:
1352   case LibFunc_tan:
1353   case LibFunc_tanf:
1354   case LibFunc_tanh:
1355   case LibFunc_tanhf:
1356   case LibFunc_tanhl:
1357   case LibFunc_tanl:
1358   case LibFunc_trunc:
1359   case LibFunc_truncf:
1360   case LibFunc_truncl:
1361     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1362             FTy.getReturnType() == FTy.getParamType(0));
1363 
1364   case LibFunc_atan2:
1365   case LibFunc_atan2_finite:
1366   case LibFunc_atan2f:
1367   case LibFunc_atan2f_finite:
1368   case LibFunc_atan2l:
1369   case LibFunc_atan2l_finite:
1370   case LibFunc_fmin:
1371   case LibFunc_fminf:
1372   case LibFunc_fminl:
1373   case LibFunc_fmax:
1374   case LibFunc_fmaxf:
1375   case LibFunc_fmaxl:
1376   case LibFunc_fmod:
1377   case LibFunc_fmodf:
1378   case LibFunc_fmodl:
1379   case LibFunc_copysign:
1380   case LibFunc_copysignf:
1381   case LibFunc_copysignl:
1382   case LibFunc_pow:
1383   case LibFunc_pow_finite:
1384   case LibFunc_powf:
1385   case LibFunc_powf_finite:
1386   case LibFunc_powl:
1387   case LibFunc_powl_finite:
1388     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1389             FTy.getReturnType() == FTy.getParamType(0) &&
1390             FTy.getReturnType() == FTy.getParamType(1));
1391 
1392   case LibFunc_ldexp:
1393   case LibFunc_ldexpf:
1394   case LibFunc_ldexpl:
1395     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1396             FTy.getReturnType() == FTy.getParamType(0) &&
1397             FTy.getParamType(1)->isIntegerTy(32));
1398 
1399   case LibFunc_ffs:
1400   case LibFunc_ffsl:
1401   case LibFunc_ffsll:
1402   case LibFunc_fls:
1403   case LibFunc_flsl:
1404   case LibFunc_flsll:
1405     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1406             FTy.getParamType(0)->isIntegerTy());
1407 
1408   case LibFunc_isdigit:
1409   case LibFunc_isascii:
1410   case LibFunc_toascii:
1411   case LibFunc_putchar:
1412   case LibFunc_putchar_unlocked:
1413     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1414             FTy.getReturnType() == FTy.getParamType(0));
1415 
1416   case LibFunc_abs:
1417   case LibFunc_labs:
1418   case LibFunc_llabs:
1419     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1420             FTy.getReturnType() == FTy.getParamType(0));
1421 
1422   case LibFunc_cxa_atexit:
1423     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1424             FTy.getParamType(0)->isPointerTy() &&
1425             FTy.getParamType(1)->isPointerTy() &&
1426             FTy.getParamType(2)->isPointerTy());
1427 
1428   case LibFunc_sinpi:
1429   case LibFunc_cospi:
1430     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1431             FTy.getReturnType() == FTy.getParamType(0));
1432 
1433   case LibFunc_sinpif:
1434   case LibFunc_cospif:
1435     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1436             FTy.getReturnType() == FTy.getParamType(0));
1437 
1438   case LibFunc_strnlen:
1439     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1440             FTy.getParamType(0) == PCharTy &&
1441             FTy.getParamType(1) == SizeTTy);
1442 
1443   case LibFunc_posix_memalign:
1444     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1445             FTy.getParamType(0)->isPointerTy() &&
1446             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1447 
1448   case LibFunc_wcslen:
1449     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1450             FTy.getReturnType()->isIntegerTy());
1451 
1452   case LibFunc_cabs:
1453   case LibFunc_cabsf:
1454   case LibFunc_cabsl: {
1455     Type* RetTy = FTy.getReturnType();
1456     if (!RetTy->isFloatingPointTy())
1457       return false;
1458 
1459     // NOTE: These prototypes are target specific and currently support
1460     // "complex" passed as an array or discrete real & imaginary parameters.
1461     // Add other calling conventions to enable libcall optimizations.
1462     if (NumParams == 1)
1463       return (FTy.getParamType(0)->isArrayTy() &&
1464               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1465               FTy.getParamType(0)->getArrayElementType() == RetTy);
1466     else if (NumParams == 2)
1467       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1468     else
1469       return false;
1470   }
1471   case LibFunc::NumLibFuncs:
1472   case LibFunc::NotLibFunc:
1473     break;
1474   }
1475 
1476   llvm_unreachable("Invalid libfunc");
1477 }
1478 
1479 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1480                                        LibFunc &F) const {
1481   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1482   // intrinsics, this ends up being an interesting compile time win since we
1483   // avoid string normalization and comparison.
1484   if (FDecl.isIntrinsic()) return false;
1485 
1486   const DataLayout *DL =
1487       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1488   return getLibFunc(FDecl.getName(), F) &&
1489          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1490 }
1491 
1492 void TargetLibraryInfoImpl::disableAllFunctions() {
1493   memset(AvailableArray, 0, sizeof(AvailableArray));
1494 }
1495 
1496 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1497   return LHS.ScalarFnName < RHS.ScalarFnName;
1498 }
1499 
1500 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1501   return LHS.VectorFnName < RHS.VectorFnName;
1502 }
1503 
1504 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1505   return LHS.ScalarFnName < S;
1506 }
1507 
1508 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1509   return LHS.VectorFnName < S;
1510 }
1511 
1512 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1513   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1514   llvm::sort(VectorDescs, compareByScalarFnName);
1515 
1516   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1517   llvm::sort(ScalarDescs, compareByVectorFnName);
1518 }
1519 
1520 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1521     enum VectorLibrary VecLib) {
1522   switch (VecLib) {
1523   case Accelerate: {
1524     const VecDesc VecFuncs[] = {
1525     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1526     #include "llvm/Analysis/VecFuncs.def"
1527     };
1528     addVectorizableFunctions(VecFuncs);
1529     break;
1530   }
1531   case MASSV: {
1532     const VecDesc VecFuncs[] = {
1533     #define TLI_DEFINE_MASSV_VECFUNCS
1534     #include "llvm/Analysis/VecFuncs.def"
1535     };
1536     addVectorizableFunctions(VecFuncs);
1537     break;
1538   }
1539   case SVML: {
1540     const VecDesc VecFuncs[] = {
1541     #define TLI_DEFINE_SVML_VECFUNCS
1542     #include "llvm/Analysis/VecFuncs.def"
1543     };
1544     addVectorizableFunctions(VecFuncs);
1545     break;
1546   }
1547   case NoLibrary:
1548     break;
1549   }
1550 }
1551 
1552 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1553   funcName = sanitizeFunctionName(funcName);
1554   if (funcName.empty())
1555     return false;
1556 
1557   std::vector<VecDesc>::const_iterator I =
1558       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1559   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1560 }
1561 
1562 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1563                                                        unsigned VF) const {
1564   F = sanitizeFunctionName(F);
1565   if (F.empty())
1566     return F;
1567   std::vector<VecDesc>::const_iterator I =
1568       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1569   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1570     if (I->VectorizationFactor == VF)
1571       return I->VectorFnName;
1572     ++I;
1573   }
1574   return StringRef();
1575 }
1576 
1577 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1578                                                        unsigned &VF) const {
1579   F = sanitizeFunctionName(F);
1580   if (F.empty())
1581     return F;
1582 
1583   std::vector<VecDesc>::const_iterator I =
1584       llvm::lower_bound(ScalarDescs, F, compareWithVectorFnName);
1585   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1586     return StringRef();
1587   VF = I->VectorizationFactor;
1588   return I->ScalarFnName;
1589 }
1590 
1591 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1592                                              FunctionAnalysisManager &) {
1593   if (PresetInfoImpl)
1594     return TargetLibraryInfo(*PresetInfoImpl);
1595 
1596   return TargetLibraryInfo(
1597       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1598 }
1599 
1600 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1601   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1602       Impls[T.normalize()];
1603   if (!Impl)
1604     Impl.reset(new TargetLibraryInfoImpl(T));
1605 
1606   return *Impl;
1607 }
1608 
1609 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1610   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1611       M.getModuleFlag("wchar_size")))
1612     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1613   return 0;
1614 }
1615 
1616 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1617     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1618   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1619 }
1620 
1621 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1622     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1623   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1624 }
1625 
1626 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1627     const TargetLibraryInfoImpl &TLIImpl)
1628     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1629   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1630 }
1631 
1632 AnalysisKey TargetLibraryAnalysis::Key;
1633 
1634 // Register the basic pass.
1635 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1636                 "Target Library Information", false, true)
1637 char TargetLibraryInfoWrapperPass::ID = 0;
1638 
1639 void TargetLibraryInfoWrapperPass::anchor() {}
1640 
1641 unsigned TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF) const {
1642   ScalarF = sanitizeFunctionName(ScalarF);
1643   if (ScalarF.empty())
1644     return 1;
1645 
1646   unsigned VF = 1;
1647   std::vector<VecDesc>::const_iterator I =
1648       llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1649   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1650     if (I->VectorizationFactor > VF)
1651       VF = I->VectorizationFactor;
1652     ++I;
1653   }
1654   return VF;
1655 }
1656