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/Support/CommandLine.h"
17 using namespace llvm;
18 
19 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
20     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
21     cl::init(TargetLibraryInfoImpl::NoLibrary),
22     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
23                           "No vector functions library"),
24                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
25                           "Accelerate framework"),
26                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
27                           "Intel SVML library")));
28 
29 StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
30 #define TLI_DEFINE_STRING
31 #include "llvm/Analysis/TargetLibraryInfo.def"
32 };
33 
34 static bool hasSinCosPiStret(const Triple &T) {
35   // Only Darwin variants have _stret versions of combined trig functions.
36   if (!T.isOSDarwin())
37     return false;
38 
39   // The ABI is rather complicated on x86, so don't do anything special there.
40   if (T.getArch() == Triple::x86)
41     return false;
42 
43   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
44     return false;
45 
46   if (T.isiOS() && T.isOSVersionLT(7, 0))
47     return false;
48 
49   return true;
50 }
51 
52 static bool hasBcmp(const Triple &TT) {
53   // Posix removed support from bcmp() in 2001, but the glibc and several
54   // implementations of the libc still have it.
55   if (TT.isOSLinux())
56     return TT.isGNUEnvironment() || TT.isMusl();
57   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
58   // not have it.
59   return TT.isOSFreeBSD() || TT.isOSSolaris() || TT.isOSDarwin();
60 }
61 
62 /// Initialize the set of available library functions based on the specified
63 /// target triple. This should be carefully written so that a missing target
64 /// triple gets a sane set of defaults.
65 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
66                        ArrayRef<StringRef> StandardNames) {
67   // Verify that the StandardNames array is in alphabetical order.
68   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
69                         [](StringRef LHS, StringRef RHS) {
70                           return LHS < RHS;
71                         }) &&
72          "TargetLibraryInfoImpl function names must be sorted");
73 
74   // Set IO unlocked variants as unavailable
75   // Set them as available per system below
76   TLI.setUnavailable(LibFunc_getchar_unlocked);
77   TLI.setUnavailable(LibFunc_putc_unlocked);
78   TLI.setUnavailable(LibFunc_putchar_unlocked);
79   TLI.setUnavailable(LibFunc_fputc_unlocked);
80   TLI.setUnavailable(LibFunc_fgetc_unlocked);
81   TLI.setUnavailable(LibFunc_fread_unlocked);
82   TLI.setUnavailable(LibFunc_fwrite_unlocked);
83   TLI.setUnavailable(LibFunc_fputs_unlocked);
84   TLI.setUnavailable(LibFunc_fgets_unlocked);
85 
86   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
87        ShouldSignExtI32Param = false;
88   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
89   // returns corresponding to C-level ints and unsigned ints.
90   if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
91       T.getArch() == Triple::systemz) {
92     ShouldExtI32Param = true;
93     ShouldExtI32Return = true;
94   }
95   // Mips, on the other hand, needs signext on i32 parameters corresponding
96   // to both signed and unsigned ints.
97   if (T.isMIPS()) {
98     ShouldSignExtI32Param = true;
99   }
100   TLI.setShouldExtI32Param(ShouldExtI32Param);
101   TLI.setShouldExtI32Return(ShouldExtI32Return);
102   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
103 
104   if (T.getArch() == Triple::r600 ||
105       T.getArch() == Triple::amdgcn) {
106     TLI.setUnavailable(LibFunc_ldexp);
107     TLI.setUnavailable(LibFunc_ldexpf);
108     TLI.setUnavailable(LibFunc_ldexpl);
109     TLI.setUnavailable(LibFunc_exp10);
110     TLI.setUnavailable(LibFunc_exp10f);
111     TLI.setUnavailable(LibFunc_exp10l);
112     TLI.setUnavailable(LibFunc_log10);
113     TLI.setUnavailable(LibFunc_log10f);
114     TLI.setUnavailable(LibFunc_log10l);
115   }
116 
117   // There are no library implementations of mempcy and memset for AMD gpus and
118   // these can be difficult to lower in the backend.
119   if (T.getArch() == Triple::r600 ||
120       T.getArch() == Triple::amdgcn) {
121     TLI.setUnavailable(LibFunc_memcpy);
122     TLI.setUnavailable(LibFunc_memset);
123     TLI.setUnavailable(LibFunc_memset_pattern16);
124     return;
125   }
126 
127   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
128   // All versions of watchOS support it.
129   if (T.isMacOSX()) {
130     // available IO unlocked variants on Mac OS X
131     TLI.setAvailable(LibFunc_getc_unlocked);
132     TLI.setAvailable(LibFunc_getchar_unlocked);
133     TLI.setAvailable(LibFunc_putc_unlocked);
134     TLI.setAvailable(LibFunc_putchar_unlocked);
135 
136     if (T.isMacOSXVersionLT(10, 5))
137       TLI.setUnavailable(LibFunc_memset_pattern16);
138   } else if (T.isiOS()) {
139     if (T.isOSVersionLT(3, 0))
140       TLI.setUnavailable(LibFunc_memset_pattern16);
141   } else if (!T.isWatchOS()) {
142     TLI.setUnavailable(LibFunc_memset_pattern16);
143   }
144 
145   if (!hasSinCosPiStret(T)) {
146     TLI.setUnavailable(LibFunc_sinpi);
147     TLI.setUnavailable(LibFunc_sinpif);
148     TLI.setUnavailable(LibFunc_cospi);
149     TLI.setUnavailable(LibFunc_cospif);
150     TLI.setUnavailable(LibFunc_sincospi_stret);
151     TLI.setUnavailable(LibFunc_sincospif_stret);
152   }
153 
154   if (!hasBcmp(T))
155     TLI.setUnavailable(LibFunc_bcmp);
156 
157   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
158       !T.isMacOSXVersionLT(10, 7)) {
159     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
160     // we don't care about) have two versions; on recent OSX, the one we want
161     // has a $UNIX2003 suffix. The two implementations are identical except
162     // for the return value in some edge cases.  However, we don't want to
163     // generate code that depends on the old symbols.
164     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
165     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
166   }
167 
168   // iprintf and friends are only available on XCore, TCE, and Emscripten.
169   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
170       T.getOS() != Triple::Emscripten) {
171     TLI.setUnavailable(LibFunc_iprintf);
172     TLI.setUnavailable(LibFunc_siprintf);
173     TLI.setUnavailable(LibFunc_fiprintf);
174   }
175 
176   // __small_printf and friends are only available on Emscripten.
177   if (T.getOS() != Triple::Emscripten) {
178     TLI.setUnavailable(LibFunc_small_printf);
179     TLI.setUnavailable(LibFunc_small_sprintf);
180     TLI.setUnavailable(LibFunc_small_fprintf);
181   }
182 
183   if (T.isOSWindows() && !T.isOSCygMing()) {
184     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
185     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
186     // XXX: In order to use an MSVCRT older than VC19,
187     // the specific library version must be explicit in the target triple,
188     // e.g., x86_64-pc-windows-msvc18.
189     bool hasPartialC99 = true;
190     if (T.isKnownWindowsMSVCEnvironment()) {
191       unsigned Major, Minor, Micro;
192       T.getEnvironmentVersion(Major, Minor, Micro);
193       hasPartialC99 = (Major == 0 || Major >= 19);
194     }
195 
196     // Latest targets support C89 math functions, in part.
197     bool isARM = (T.getArch() == Triple::aarch64 ||
198                   T.getArch() == Triple::arm);
199     bool hasPartialFloat = (isARM ||
200                             T.getArch() == Triple::x86_64);
201 
202     // Win32 does not support float C89 math functions, in general.
203     if (!hasPartialFloat) {
204       TLI.setUnavailable(LibFunc_acosf);
205       TLI.setUnavailable(LibFunc_asinf);
206       TLI.setUnavailable(LibFunc_atan2f);
207       TLI.setUnavailable(LibFunc_atanf);
208       TLI.setUnavailable(LibFunc_ceilf);
209       TLI.setUnavailable(LibFunc_cosf);
210       TLI.setUnavailable(LibFunc_coshf);
211       TLI.setUnavailable(LibFunc_expf);
212       TLI.setUnavailable(LibFunc_floorf);
213       TLI.setUnavailable(LibFunc_fmodf);
214       TLI.setUnavailable(LibFunc_log10f);
215       TLI.setUnavailable(LibFunc_logf);
216       TLI.setUnavailable(LibFunc_modff);
217       TLI.setUnavailable(LibFunc_powf);
218       TLI.setUnavailable(LibFunc_sinf);
219       TLI.setUnavailable(LibFunc_sinhf);
220       TLI.setUnavailable(LibFunc_sqrtf);
221       TLI.setUnavailable(LibFunc_tanf);
222       TLI.setUnavailable(LibFunc_tanhf);
223     }
224     if (!isARM)
225       TLI.setUnavailable(LibFunc_fabsf);
226     TLI.setUnavailable(LibFunc_frexpf);
227     TLI.setUnavailable(LibFunc_ldexpf);
228 
229     // Win32 does not support long double C89 math functions.
230     TLI.setUnavailable(LibFunc_acosl);
231     TLI.setUnavailable(LibFunc_asinl);
232     TLI.setUnavailable(LibFunc_atan2l);
233     TLI.setUnavailable(LibFunc_atanl);
234     TLI.setUnavailable(LibFunc_ceill);
235     TLI.setUnavailable(LibFunc_cosl);
236     TLI.setUnavailable(LibFunc_coshl);
237     TLI.setUnavailable(LibFunc_expl);
238     TLI.setUnavailable(LibFunc_fabsl);
239     TLI.setUnavailable(LibFunc_floorl);
240     TLI.setUnavailable(LibFunc_fmodl);
241     TLI.setUnavailable(LibFunc_frexpl);
242     TLI.setUnavailable(LibFunc_ldexpl);
243     TLI.setUnavailable(LibFunc_log10l);
244     TLI.setUnavailable(LibFunc_logl);
245     TLI.setUnavailable(LibFunc_modfl);
246     TLI.setUnavailable(LibFunc_powl);
247     TLI.setUnavailable(LibFunc_sinl);
248     TLI.setUnavailable(LibFunc_sinhl);
249     TLI.setUnavailable(LibFunc_sqrtl);
250     TLI.setUnavailable(LibFunc_tanl);
251     TLI.setUnavailable(LibFunc_tanhl);
252 
253     // Win32 does not fully support C99 math functions.
254     if (!hasPartialC99) {
255       TLI.setUnavailable(LibFunc_acosh);
256       TLI.setUnavailable(LibFunc_acoshf);
257       TLI.setUnavailable(LibFunc_asinh);
258       TLI.setUnavailable(LibFunc_asinhf);
259       TLI.setUnavailable(LibFunc_atanh);
260       TLI.setUnavailable(LibFunc_atanhf);
261       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
262       TLI.setUnavailable(LibFunc_cabsf);
263       TLI.setUnavailable(LibFunc_cbrt);
264       TLI.setUnavailable(LibFunc_cbrtf);
265       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
266       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
267       TLI.setUnavailable(LibFunc_exp2);
268       TLI.setUnavailable(LibFunc_exp2f);
269       TLI.setUnavailable(LibFunc_expm1);
270       TLI.setUnavailable(LibFunc_expm1f);
271       TLI.setUnavailable(LibFunc_fmax);
272       TLI.setUnavailable(LibFunc_fmaxf);
273       TLI.setUnavailable(LibFunc_fmin);
274       TLI.setUnavailable(LibFunc_fminf);
275       TLI.setUnavailable(LibFunc_log1p);
276       TLI.setUnavailable(LibFunc_log1pf);
277       TLI.setUnavailable(LibFunc_log2);
278       TLI.setUnavailable(LibFunc_log2f);
279       TLI.setAvailableWithName(LibFunc_logb, "_logb");
280       if (hasPartialFloat)
281         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
282       else
283         TLI.setUnavailable(LibFunc_logbf);
284       TLI.setUnavailable(LibFunc_rint);
285       TLI.setUnavailable(LibFunc_rintf);
286       TLI.setUnavailable(LibFunc_round);
287       TLI.setUnavailable(LibFunc_roundf);
288       TLI.setUnavailable(LibFunc_trunc);
289       TLI.setUnavailable(LibFunc_truncf);
290     }
291 
292     // Win32 does not support long double C99 math functions.
293     TLI.setUnavailable(LibFunc_acoshl);
294     TLI.setUnavailable(LibFunc_asinhl);
295     TLI.setUnavailable(LibFunc_atanhl);
296     TLI.setUnavailable(LibFunc_cabsl);
297     TLI.setUnavailable(LibFunc_cbrtl);
298     TLI.setUnavailable(LibFunc_copysignl);
299     TLI.setUnavailable(LibFunc_exp2l);
300     TLI.setUnavailable(LibFunc_expm1l);
301     TLI.setUnavailable(LibFunc_fmaxl);
302     TLI.setUnavailable(LibFunc_fminl);
303     TLI.setUnavailable(LibFunc_log1pl);
304     TLI.setUnavailable(LibFunc_log2l);
305     TLI.setUnavailable(LibFunc_logbl);
306     TLI.setUnavailable(LibFunc_nearbyintl);
307     TLI.setUnavailable(LibFunc_rintl);
308     TLI.setUnavailable(LibFunc_roundl);
309     TLI.setUnavailable(LibFunc_truncl);
310 
311     // Win32 does not support these functions, but
312     // they are generally available on POSIX-compliant systems.
313     TLI.setUnavailable(LibFunc_access);
314     TLI.setUnavailable(LibFunc_bcmp);
315     TLI.setUnavailable(LibFunc_bcopy);
316     TLI.setUnavailable(LibFunc_bzero);
317     TLI.setUnavailable(LibFunc_chmod);
318     TLI.setUnavailable(LibFunc_chown);
319     TLI.setUnavailable(LibFunc_closedir);
320     TLI.setUnavailable(LibFunc_ctermid);
321     TLI.setUnavailable(LibFunc_fdopen);
322     TLI.setUnavailable(LibFunc_ffs);
323     TLI.setUnavailable(LibFunc_fileno);
324     TLI.setUnavailable(LibFunc_flockfile);
325     TLI.setUnavailable(LibFunc_fseeko);
326     TLI.setUnavailable(LibFunc_fstat);
327     TLI.setUnavailable(LibFunc_fstatvfs);
328     TLI.setUnavailable(LibFunc_ftello);
329     TLI.setUnavailable(LibFunc_ftrylockfile);
330     TLI.setUnavailable(LibFunc_funlockfile);
331     TLI.setUnavailable(LibFunc_getitimer);
332     TLI.setUnavailable(LibFunc_getlogin_r);
333     TLI.setUnavailable(LibFunc_getpwnam);
334     TLI.setUnavailable(LibFunc_gettimeofday);
335     TLI.setUnavailable(LibFunc_htonl);
336     TLI.setUnavailable(LibFunc_htons);
337     TLI.setUnavailable(LibFunc_lchown);
338     TLI.setUnavailable(LibFunc_lstat);
339     TLI.setUnavailable(LibFunc_memccpy);
340     TLI.setUnavailable(LibFunc_mkdir);
341     TLI.setUnavailable(LibFunc_ntohl);
342     TLI.setUnavailable(LibFunc_ntohs);
343     TLI.setUnavailable(LibFunc_open);
344     TLI.setUnavailable(LibFunc_opendir);
345     TLI.setUnavailable(LibFunc_pclose);
346     TLI.setUnavailable(LibFunc_popen);
347     TLI.setUnavailable(LibFunc_pread);
348     TLI.setUnavailable(LibFunc_pwrite);
349     TLI.setUnavailable(LibFunc_read);
350     TLI.setUnavailable(LibFunc_readlink);
351     TLI.setUnavailable(LibFunc_realpath);
352     TLI.setUnavailable(LibFunc_rmdir);
353     TLI.setUnavailable(LibFunc_setitimer);
354     TLI.setUnavailable(LibFunc_stat);
355     TLI.setUnavailable(LibFunc_statvfs);
356     TLI.setUnavailable(LibFunc_stpcpy);
357     TLI.setUnavailable(LibFunc_stpncpy);
358     TLI.setUnavailable(LibFunc_strcasecmp);
359     TLI.setUnavailable(LibFunc_strncasecmp);
360     TLI.setUnavailable(LibFunc_times);
361     TLI.setUnavailable(LibFunc_uname);
362     TLI.setUnavailable(LibFunc_unlink);
363     TLI.setUnavailable(LibFunc_unsetenv);
364     TLI.setUnavailable(LibFunc_utime);
365     TLI.setUnavailable(LibFunc_utimes);
366     TLI.setUnavailable(LibFunc_write);
367   }
368 
369   switch (T.getOS()) {
370   case Triple::MacOSX:
371     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
372     // and their names are __exp10 and __exp10f. exp10l is not available on
373     // OS X or iOS.
374     TLI.setUnavailable(LibFunc_exp10l);
375     if (T.isMacOSXVersionLT(10, 9)) {
376       TLI.setUnavailable(LibFunc_exp10);
377       TLI.setUnavailable(LibFunc_exp10f);
378     } else {
379       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
380       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
381     }
382     break;
383   case Triple::IOS:
384   case Triple::TvOS:
385   case Triple::WatchOS:
386     TLI.setUnavailable(LibFunc_exp10l);
387     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
388                            (T.isOSVersionLT(9, 0) &&
389                             (T.getArch() == Triple::x86 ||
390                              T.getArch() == Triple::x86_64)))) {
391       TLI.setUnavailable(LibFunc_exp10);
392       TLI.setUnavailable(LibFunc_exp10f);
393     } else {
394       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
395       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
396     }
397     break;
398   case Triple::Linux:
399     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
400     // buggy prior to glibc version 2.18. Until this version is widely deployed
401     // or we have a reasonable detection strategy, we cannot use exp10 reliably
402     // on Linux.
403     //
404     // Fall through to disable all of them.
405     LLVM_FALLTHROUGH;
406   default:
407     TLI.setUnavailable(LibFunc_exp10);
408     TLI.setUnavailable(LibFunc_exp10f);
409     TLI.setUnavailable(LibFunc_exp10l);
410   }
411 
412   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
413   // Linux (GLIBC):
414   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
415   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
416   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
417   switch (T.getOS()) {
418   case Triple::Darwin:
419   case Triple::MacOSX:
420   case Triple::IOS:
421   case Triple::TvOS:
422   case Triple::WatchOS:
423   case Triple::FreeBSD:
424   case Triple::Linux:
425     break;
426   default:
427     TLI.setUnavailable(LibFunc_ffsl);
428   }
429 
430   // ffsll is available on at least FreeBSD and Linux (GLIBC):
431   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
432   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
433   switch (T.getOS()) {
434   case Triple::Darwin:
435   case Triple::MacOSX:
436   case Triple::IOS:
437   case Triple::TvOS:
438   case Triple::WatchOS:
439   case Triple::FreeBSD:
440   case Triple::Linux:
441     break;
442   default:
443     TLI.setUnavailable(LibFunc_ffsll);
444   }
445 
446   // The following functions are available on at least FreeBSD:
447   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
448   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
449   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
450   if (!T.isOSFreeBSD()) {
451     TLI.setUnavailable(LibFunc_fls);
452     TLI.setUnavailable(LibFunc_flsl);
453     TLI.setUnavailable(LibFunc_flsll);
454   }
455 
456   // The following functions are only available on GNU/Linux (using glibc).
457   // Linux variants without glibc (eg: bionic, musl) may have some subset.
458   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
459     TLI.setUnavailable(LibFunc_dunder_strdup);
460     TLI.setUnavailable(LibFunc_dunder_strtok_r);
461     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
462     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
463     TLI.setUnavailable(LibFunc_under_IO_getc);
464     TLI.setUnavailable(LibFunc_under_IO_putc);
465     // But, Android and musl have memalign.
466     if (!T.isAndroid() && !T.isMusl())
467       TLI.setUnavailable(LibFunc_memalign);
468     TLI.setUnavailable(LibFunc_fopen64);
469     TLI.setUnavailable(LibFunc_fseeko64);
470     TLI.setUnavailable(LibFunc_fstat64);
471     TLI.setUnavailable(LibFunc_fstatvfs64);
472     TLI.setUnavailable(LibFunc_ftello64);
473     TLI.setUnavailable(LibFunc_lstat64);
474     TLI.setUnavailable(LibFunc_open64);
475     TLI.setUnavailable(LibFunc_stat64);
476     TLI.setUnavailable(LibFunc_statvfs64);
477     TLI.setUnavailable(LibFunc_tmpfile64);
478 
479     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
480     TLI.setUnavailable(LibFunc_acos_finite);
481     TLI.setUnavailable(LibFunc_acosf_finite);
482     TLI.setUnavailable(LibFunc_acosl_finite);
483     TLI.setUnavailable(LibFunc_acosh_finite);
484     TLI.setUnavailable(LibFunc_acoshf_finite);
485     TLI.setUnavailable(LibFunc_acoshl_finite);
486     TLI.setUnavailable(LibFunc_asin_finite);
487     TLI.setUnavailable(LibFunc_asinf_finite);
488     TLI.setUnavailable(LibFunc_asinl_finite);
489     TLI.setUnavailable(LibFunc_atan2_finite);
490     TLI.setUnavailable(LibFunc_atan2f_finite);
491     TLI.setUnavailable(LibFunc_atan2l_finite);
492     TLI.setUnavailable(LibFunc_atanh_finite);
493     TLI.setUnavailable(LibFunc_atanhf_finite);
494     TLI.setUnavailable(LibFunc_atanhl_finite);
495     TLI.setUnavailable(LibFunc_cosh_finite);
496     TLI.setUnavailable(LibFunc_coshf_finite);
497     TLI.setUnavailable(LibFunc_coshl_finite);
498     TLI.setUnavailable(LibFunc_exp10_finite);
499     TLI.setUnavailable(LibFunc_exp10f_finite);
500     TLI.setUnavailable(LibFunc_exp10l_finite);
501     TLI.setUnavailable(LibFunc_exp2_finite);
502     TLI.setUnavailable(LibFunc_exp2f_finite);
503     TLI.setUnavailable(LibFunc_exp2l_finite);
504     TLI.setUnavailable(LibFunc_exp_finite);
505     TLI.setUnavailable(LibFunc_expf_finite);
506     TLI.setUnavailable(LibFunc_expl_finite);
507     TLI.setUnavailable(LibFunc_log10_finite);
508     TLI.setUnavailable(LibFunc_log10f_finite);
509     TLI.setUnavailable(LibFunc_log10l_finite);
510     TLI.setUnavailable(LibFunc_log2_finite);
511     TLI.setUnavailable(LibFunc_log2f_finite);
512     TLI.setUnavailable(LibFunc_log2l_finite);
513     TLI.setUnavailable(LibFunc_log_finite);
514     TLI.setUnavailable(LibFunc_logf_finite);
515     TLI.setUnavailable(LibFunc_logl_finite);
516     TLI.setUnavailable(LibFunc_pow_finite);
517     TLI.setUnavailable(LibFunc_powf_finite);
518     TLI.setUnavailable(LibFunc_powl_finite);
519     TLI.setUnavailable(LibFunc_sinh_finite);
520     TLI.setUnavailable(LibFunc_sinhf_finite);
521     TLI.setUnavailable(LibFunc_sinhl_finite);
522   }
523 
524   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
525       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
526     // available IO unlocked variants on GNU/Linux and Android P or later
527     TLI.setAvailable(LibFunc_getc_unlocked);
528     TLI.setAvailable(LibFunc_getchar_unlocked);
529     TLI.setAvailable(LibFunc_putc_unlocked);
530     TLI.setAvailable(LibFunc_putchar_unlocked);
531     TLI.setAvailable(LibFunc_fputc_unlocked);
532     TLI.setAvailable(LibFunc_fgetc_unlocked);
533     TLI.setAvailable(LibFunc_fread_unlocked);
534     TLI.setAvailable(LibFunc_fwrite_unlocked);
535     TLI.setAvailable(LibFunc_fputs_unlocked);
536     TLI.setAvailable(LibFunc_fgets_unlocked);
537   }
538 
539   // As currently implemented in clang, NVPTX code has no standard library to
540   // speak of.  Headers provide a standard-ish library implementation, but many
541   // of the signatures are wrong -- for example, many libm functions are not
542   // extern "C".
543   //
544   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
545   // but only used functions are provided to llvm.  Moreover, most of the
546   // functions in libdevice don't map precisely to standard library functions.
547   //
548   // FIXME: Having no standard library prevents e.g. many fastmath
549   // optimizations, so this situation should be fixed.
550   if (T.isNVPTX()) {
551     TLI.disableAllFunctions();
552     TLI.setAvailable(LibFunc_nvvm_reflect);
553   } else {
554     TLI.setUnavailable(LibFunc_nvvm_reflect);
555   }
556 
557   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
558 }
559 
560 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
561   // Default to everything being available.
562   memset(AvailableArray, -1, sizeof(AvailableArray));
563 
564   initialize(*this, Triple(), StandardNames);
565 }
566 
567 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
568   // Default to everything being available.
569   memset(AvailableArray, -1, sizeof(AvailableArray));
570 
571   initialize(*this, T, StandardNames);
572 }
573 
574 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
575     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
576       ShouldExtI32Return(TLI.ShouldExtI32Return),
577       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
578   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
579   VectorDescs = TLI.VectorDescs;
580   ScalarDescs = TLI.ScalarDescs;
581 }
582 
583 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
584     : CustomNames(std::move(TLI.CustomNames)),
585       ShouldExtI32Param(TLI.ShouldExtI32Param),
586       ShouldExtI32Return(TLI.ShouldExtI32Return),
587       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
588   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
589             AvailableArray);
590   VectorDescs = TLI.VectorDescs;
591   ScalarDescs = TLI.ScalarDescs;
592 }
593 
594 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
595   CustomNames = TLI.CustomNames;
596   ShouldExtI32Param = TLI.ShouldExtI32Param;
597   ShouldExtI32Return = TLI.ShouldExtI32Return;
598   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
599   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
600   return *this;
601 }
602 
603 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
604   CustomNames = std::move(TLI.CustomNames);
605   ShouldExtI32Param = TLI.ShouldExtI32Param;
606   ShouldExtI32Return = TLI.ShouldExtI32Return;
607   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
608   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
609             AvailableArray);
610   return *this;
611 }
612 
613 static StringRef sanitizeFunctionName(StringRef funcName) {
614   // Filter out empty names and names containing null bytes, those can't be in
615   // our table.
616   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
617     return StringRef();
618 
619   // Check for \01 prefix that is used to mangle __asm declarations and
620   // strip it if present.
621   return GlobalValue::dropLLVMManglingEscape(funcName);
622 }
623 
624 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
625                                        LibFunc &F) const {
626   StringRef const *Start = &StandardNames[0];
627   StringRef const *End = &StandardNames[NumLibFuncs];
628 
629   funcName = sanitizeFunctionName(funcName);
630   if (funcName.empty())
631     return false;
632 
633   StringRef const *I = std::lower_bound(
634       Start, End, funcName, [](StringRef LHS, StringRef RHS) {
635         return LHS < RHS;
636       });
637   if (I != End && *I == funcName) {
638     F = (LibFunc)(I - Start);
639     return true;
640   }
641   return false;
642 }
643 
644 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
645                                                    LibFunc F,
646                                                    const DataLayout *DL) const {
647   LLVMContext &Ctx = FTy.getContext();
648   Type *PCharTy = Type::getInt8PtrTy(Ctx);
649   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
650   auto IsSizeTTy = [SizeTTy](Type *Ty) {
651     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
652   };
653   unsigned NumParams = FTy.getNumParams();
654 
655   switch (F) {
656   case LibFunc_execl:
657   case LibFunc_execlp:
658   case LibFunc_execle:
659     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
660             FTy.getParamType(1)->isPointerTy() &&
661             FTy.getReturnType()->isIntegerTy(32));
662   case LibFunc_execv:
663   case LibFunc_execvp:
664     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
665             FTy.getParamType(1)->isPointerTy() &&
666             FTy.getReturnType()->isIntegerTy(32));
667   case LibFunc_execvP:
668   case LibFunc_execvpe:
669   case LibFunc_execve:
670     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
671             FTy.getParamType(1)->isPointerTy() &&
672             FTy.getParamType(2)->isPointerTy() &&
673             FTy.getReturnType()->isIntegerTy(32));
674   case LibFunc_strlen:
675     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
676             FTy.getReturnType()->isIntegerTy());
677 
678   case LibFunc_strchr:
679   case LibFunc_strrchr:
680     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
681             FTy.getParamType(0) == FTy.getReturnType() &&
682             FTy.getParamType(1)->isIntegerTy());
683 
684   case LibFunc_strtol:
685   case LibFunc_strtod:
686   case LibFunc_strtof:
687   case LibFunc_strtoul:
688   case LibFunc_strtoll:
689   case LibFunc_strtold:
690   case LibFunc_strtoull:
691     return ((NumParams == 2 || NumParams == 3) &&
692             FTy.getParamType(0)->isPointerTy() &&
693             FTy.getParamType(1)->isPointerTy());
694   case LibFunc_strcat_chk:
695     --NumParams;
696     if (!IsSizeTTy(FTy.getParamType(NumParams)))
697       return false;
698     LLVM_FALLTHROUGH;
699   case LibFunc_strcat:
700     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
701             FTy.getParamType(0) == FTy.getReturnType() &&
702             FTy.getParamType(1) == FTy.getReturnType());
703 
704   case LibFunc_strncat_chk:
705     --NumParams;
706     if (!IsSizeTTy(FTy.getParamType(NumParams)))
707       return false;
708     LLVM_FALLTHROUGH;
709   case LibFunc_strncat:
710     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
711             FTy.getParamType(0) == FTy.getReturnType() &&
712             FTy.getParamType(1) == FTy.getReturnType() &&
713             IsSizeTTy(FTy.getParamType(2)));
714 
715   case LibFunc_strcpy_chk:
716   case LibFunc_stpcpy_chk:
717     --NumParams;
718     if (!IsSizeTTy(FTy.getParamType(NumParams)))
719       return false;
720     LLVM_FALLTHROUGH;
721   case LibFunc_strcpy:
722   case LibFunc_stpcpy:
723     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
724             FTy.getParamType(0) == FTy.getParamType(1) &&
725             FTy.getParamType(0) == PCharTy);
726 
727   case LibFunc_strlcat_chk:
728   case LibFunc_strlcpy_chk:
729     --NumParams;
730     if (!IsSizeTTy(FTy.getParamType(NumParams)))
731       return false;
732     LLVM_FALLTHROUGH;
733   case LibFunc_strlcat:
734   case LibFunc_strlcpy:
735     return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
736            FTy.getParamType(0)->isPointerTy() &&
737            FTy.getParamType(1)->isPointerTy() &&
738            IsSizeTTy(FTy.getParamType(2));
739 
740   case LibFunc_strncpy_chk:
741   case LibFunc_stpncpy_chk:
742     --NumParams;
743     if (!IsSizeTTy(FTy.getParamType(NumParams)))
744       return false;
745     LLVM_FALLTHROUGH;
746   case LibFunc_strncpy:
747   case LibFunc_stpncpy:
748     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
749             FTy.getParamType(0) == FTy.getParamType(1) &&
750             FTy.getParamType(0) == PCharTy &&
751             IsSizeTTy(FTy.getParamType(2)));
752 
753   case LibFunc_strxfrm:
754     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
755             FTy.getParamType(1)->isPointerTy());
756 
757   case LibFunc_strcmp:
758     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
759             FTy.getParamType(0)->isPointerTy() &&
760             FTy.getParamType(0) == FTy.getParamType(1));
761 
762   case LibFunc_strncmp:
763     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
764             FTy.getParamType(0)->isPointerTy() &&
765             FTy.getParamType(0) == FTy.getParamType(1) &&
766             IsSizeTTy(FTy.getParamType(2)));
767 
768   case LibFunc_strspn:
769   case LibFunc_strcspn:
770     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
771             FTy.getParamType(0) == FTy.getParamType(1) &&
772             FTy.getReturnType()->isIntegerTy());
773 
774   case LibFunc_strcoll:
775   case LibFunc_strcasecmp:
776   case LibFunc_strncasecmp:
777     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
778             FTy.getParamType(1)->isPointerTy());
779 
780   case LibFunc_strstr:
781     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
782             FTy.getParamType(0)->isPointerTy() &&
783             FTy.getParamType(1)->isPointerTy());
784 
785   case LibFunc_strpbrk:
786     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
787             FTy.getReturnType() == FTy.getParamType(0) &&
788             FTy.getParamType(0) == FTy.getParamType(1));
789 
790   case LibFunc_strtok:
791   case LibFunc_strtok_r:
792     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
793   case LibFunc_scanf:
794   case LibFunc_setbuf:
795   case LibFunc_setvbuf:
796     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
797   case LibFunc_strdup:
798   case LibFunc_strndup:
799     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
800             FTy.getParamType(0)->isPointerTy());
801   case LibFunc_sscanf:
802   case LibFunc_stat:
803   case LibFunc_statvfs:
804   case LibFunc_siprintf:
805   case LibFunc_small_sprintf:
806   case LibFunc_sprintf:
807     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
808             FTy.getParamType(1)->isPointerTy() &&
809             FTy.getReturnType()->isIntegerTy(32));
810 
811   case LibFunc_sprintf_chk:
812     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
813            FTy.getParamType(1)->isIntegerTy(32) &&
814            IsSizeTTy(FTy.getParamType(2)) &&
815            FTy.getParamType(3)->isPointerTy() &&
816            FTy.getReturnType()->isIntegerTy(32);
817 
818   case LibFunc_snprintf:
819     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
820             FTy.getParamType(2)->isPointerTy() &&
821             FTy.getReturnType()->isIntegerTy(32));
822 
823   case LibFunc_snprintf_chk:
824     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
825            IsSizeTTy(FTy.getParamType(1)) &&
826            FTy.getParamType(2)->isIntegerTy(32) &&
827            IsSizeTTy(FTy.getParamType(3)) &&
828            FTy.getParamType(4)->isPointerTy() &&
829            FTy.getReturnType()->isIntegerTy(32);
830 
831   case LibFunc_setitimer:
832     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
833             FTy.getParamType(2)->isPointerTy());
834   case LibFunc_system:
835     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
836   case LibFunc_malloc:
837     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
838   case LibFunc_memcmp:
839     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
840             FTy.getParamType(0)->isPointerTy() &&
841             FTy.getParamType(1)->isPointerTy());
842 
843   case LibFunc_memchr:
844   case LibFunc_memrchr:
845     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
846             FTy.getReturnType() == FTy.getParamType(0) &&
847             FTy.getParamType(1)->isIntegerTy(32) &&
848             IsSizeTTy(FTy.getParamType(2)));
849   case LibFunc_modf:
850   case LibFunc_modff:
851   case LibFunc_modfl:
852     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
853 
854   case LibFunc_memcpy_chk:
855   case LibFunc_memmove_chk:
856     --NumParams;
857     if (!IsSizeTTy(FTy.getParamType(NumParams)))
858       return false;
859     LLVM_FALLTHROUGH;
860   case LibFunc_memcpy:
861   case LibFunc_mempcpy:
862   case LibFunc_memmove:
863     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
864             FTy.getParamType(0)->isPointerTy() &&
865             FTy.getParamType(1)->isPointerTy() &&
866             IsSizeTTy(FTy.getParamType(2)));
867 
868   case LibFunc_memset_chk:
869     --NumParams;
870     if (!IsSizeTTy(FTy.getParamType(NumParams)))
871       return false;
872     LLVM_FALLTHROUGH;
873   case LibFunc_memset:
874     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
875             FTy.getParamType(0)->isPointerTy() &&
876             FTy.getParamType(1)->isIntegerTy() &&
877             IsSizeTTy(FTy.getParamType(2)));
878 
879   case LibFunc_memccpy_chk:
880       --NumParams;
881     if (!IsSizeTTy(FTy.getParamType(NumParams)))
882       return false;
883     LLVM_FALLTHROUGH;
884   case LibFunc_memccpy:
885     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
886   case LibFunc_memalign:
887     return (FTy.getReturnType()->isPointerTy());
888   case LibFunc_realloc:
889   case LibFunc_reallocf:
890     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
891             FTy.getParamType(0) == FTy.getReturnType() &&
892             IsSizeTTy(FTy.getParamType(1)));
893   case LibFunc_read:
894     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
895   case LibFunc_rewind:
896   case LibFunc_rmdir:
897   case LibFunc_remove:
898   case LibFunc_realpath:
899     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
900   case LibFunc_rename:
901     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
902             FTy.getParamType(1)->isPointerTy());
903   case LibFunc_readlink:
904     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
905             FTy.getParamType(1)->isPointerTy());
906   case LibFunc_write:
907     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
908   case LibFunc_bcopy:
909   case LibFunc_bcmp:
910     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
911             FTy.getParamType(1)->isPointerTy());
912   case LibFunc_bzero:
913     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
914   case LibFunc_calloc:
915     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
916 
917   case LibFunc_atof:
918   case LibFunc_atoi:
919   case LibFunc_atol:
920   case LibFunc_atoll:
921   case LibFunc_ferror:
922   case LibFunc_getenv:
923   case LibFunc_getpwnam:
924   case LibFunc_iprintf:
925   case LibFunc_small_printf:
926   case LibFunc_pclose:
927   case LibFunc_perror:
928   case LibFunc_printf:
929   case LibFunc_puts:
930   case LibFunc_uname:
931   case LibFunc_under_IO_getc:
932   case LibFunc_unlink:
933   case LibFunc_unsetenv:
934     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
935 
936   case LibFunc_access:
937   case LibFunc_chmod:
938   case LibFunc_chown:
939   case LibFunc_clearerr:
940   case LibFunc_closedir:
941   case LibFunc_ctermid:
942   case LibFunc_fclose:
943   case LibFunc_feof:
944   case LibFunc_fflush:
945   case LibFunc_fgetc:
946   case LibFunc_fgetc_unlocked:
947   case LibFunc_fileno:
948   case LibFunc_flockfile:
949   case LibFunc_free:
950   case LibFunc_fseek:
951   case LibFunc_fseeko64:
952   case LibFunc_fseeko:
953   case LibFunc_fsetpos:
954   case LibFunc_ftell:
955   case LibFunc_ftello64:
956   case LibFunc_ftello:
957   case LibFunc_ftrylockfile:
958   case LibFunc_funlockfile:
959   case LibFunc_getc:
960   case LibFunc_getc_unlocked:
961   case LibFunc_getlogin_r:
962   case LibFunc_mkdir:
963   case LibFunc_mktime:
964   case LibFunc_times:
965     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
966 
967   case LibFunc_fopen:
968     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
969             FTy.getParamType(0)->isPointerTy() &&
970             FTy.getParamType(1)->isPointerTy());
971   case LibFunc_fork:
972     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
973   case LibFunc_fdopen:
974     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
975             FTy.getParamType(1)->isPointerTy());
976   case LibFunc_fputc:
977   case LibFunc_fputc_unlocked:
978   case LibFunc_fstat:
979   case LibFunc_frexp:
980   case LibFunc_frexpf:
981   case LibFunc_frexpl:
982   case LibFunc_fstatvfs:
983     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
984   case LibFunc_fgets:
985   case LibFunc_fgets_unlocked:
986     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
987             FTy.getParamType(2)->isPointerTy());
988   case LibFunc_fread:
989   case LibFunc_fread_unlocked:
990     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
991             FTy.getParamType(3)->isPointerTy());
992   case LibFunc_fwrite:
993   case LibFunc_fwrite_unlocked:
994     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
995             FTy.getParamType(0)->isPointerTy() &&
996             FTy.getParamType(1)->isIntegerTy() &&
997             FTy.getParamType(2)->isIntegerTy() &&
998             FTy.getParamType(3)->isPointerTy());
999   case LibFunc_fputs:
1000   case LibFunc_fputs_unlocked:
1001     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1002             FTy.getParamType(1)->isPointerTy());
1003   case LibFunc_fscanf:
1004   case LibFunc_fiprintf:
1005   case LibFunc_small_fprintf:
1006   case LibFunc_fprintf:
1007     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
1008             FTy.getParamType(0)->isPointerTy() &&
1009             FTy.getParamType(1)->isPointerTy());
1010   case LibFunc_fgetpos:
1011     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1012             FTy.getParamType(1)->isPointerTy());
1013   case LibFunc_getchar:
1014   case LibFunc_getchar_unlocked:
1015     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1016   case LibFunc_gets:
1017     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1018   case LibFunc_getitimer:
1019     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1020   case LibFunc_ungetc:
1021     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1022   case LibFunc_utime:
1023   case LibFunc_utimes:
1024     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1025             FTy.getParamType(1)->isPointerTy());
1026   case LibFunc_putc:
1027   case LibFunc_putc_unlocked:
1028     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1029   case LibFunc_pread:
1030   case LibFunc_pwrite:
1031     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1032   case LibFunc_popen:
1033     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1034             FTy.getParamType(0)->isPointerTy() &&
1035             FTy.getParamType(1)->isPointerTy());
1036   case LibFunc_vscanf:
1037     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1038   case LibFunc_vsscanf:
1039     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1040             FTy.getParamType(2)->isPointerTy());
1041   case LibFunc_vfscanf:
1042     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1043             FTy.getParamType(2)->isPointerTy());
1044   case LibFunc_valloc:
1045     return (FTy.getReturnType()->isPointerTy());
1046   case LibFunc_vprintf:
1047     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1048   case LibFunc_vfprintf:
1049   case LibFunc_vsprintf:
1050     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1051             FTy.getParamType(1)->isPointerTy());
1052   case LibFunc_vsprintf_chk:
1053     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1054            FTy.getParamType(1)->isIntegerTy(32) &&
1055            IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1056   case LibFunc_vsnprintf:
1057     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1058             FTy.getParamType(2)->isPointerTy());
1059   case LibFunc_vsnprintf_chk:
1060     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1061            FTy.getParamType(2)->isIntegerTy(32) &&
1062            IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1063   case LibFunc_open:
1064     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1065   case LibFunc_opendir:
1066     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1067             FTy.getParamType(0)->isPointerTy());
1068   case LibFunc_tmpfile:
1069     return (FTy.getReturnType()->isPointerTy());
1070   case LibFunc_htonl:
1071   case LibFunc_ntohl:
1072     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1073             FTy.getReturnType() == FTy.getParamType(0));
1074   case LibFunc_htons:
1075   case LibFunc_ntohs:
1076     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1077             FTy.getReturnType() == FTy.getParamType(0));
1078   case LibFunc_lstat:
1079     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1080             FTy.getParamType(1)->isPointerTy());
1081   case LibFunc_lchown:
1082     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1083   case LibFunc_qsort:
1084     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1085   case LibFunc_dunder_strdup:
1086   case LibFunc_dunder_strndup:
1087     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1088             FTy.getParamType(0)->isPointerTy());
1089   case LibFunc_dunder_strtok_r:
1090     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1091   case LibFunc_under_IO_putc:
1092     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1093   case LibFunc_dunder_isoc99_scanf:
1094     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1095   case LibFunc_stat64:
1096   case LibFunc_lstat64:
1097   case LibFunc_statvfs64:
1098     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1099             FTy.getParamType(1)->isPointerTy());
1100   case LibFunc_dunder_isoc99_sscanf:
1101     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1102             FTy.getParamType(1)->isPointerTy());
1103   case LibFunc_fopen64:
1104     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1105             FTy.getParamType(0)->isPointerTy() &&
1106             FTy.getParamType(1)->isPointerTy());
1107   case LibFunc_tmpfile64:
1108     return (FTy.getReturnType()->isPointerTy());
1109   case LibFunc_fstat64:
1110   case LibFunc_fstatvfs64:
1111     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1112   case LibFunc_open64:
1113     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1114   case LibFunc_gettimeofday:
1115     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1116             FTy.getParamType(1)->isPointerTy());
1117 
1118   // new(unsigned int);
1119   case LibFunc_Znwj:
1120   // new(unsigned long);
1121   case LibFunc_Znwm:
1122   // new[](unsigned int);
1123   case LibFunc_Znaj:
1124   // new[](unsigned long);
1125   case LibFunc_Znam:
1126   // new(unsigned int);
1127   case LibFunc_msvc_new_int:
1128   // new(unsigned long long);
1129   case LibFunc_msvc_new_longlong:
1130   // new[](unsigned int);
1131   case LibFunc_msvc_new_array_int:
1132   // new[](unsigned long long);
1133   case LibFunc_msvc_new_array_longlong:
1134     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1135 
1136   // new(unsigned int, nothrow);
1137   case LibFunc_ZnwjRKSt9nothrow_t:
1138   // new(unsigned long, nothrow);
1139   case LibFunc_ZnwmRKSt9nothrow_t:
1140   // new[](unsigned int, nothrow);
1141   case LibFunc_ZnajRKSt9nothrow_t:
1142   // new[](unsigned long, nothrow);
1143   case LibFunc_ZnamRKSt9nothrow_t:
1144   // new(unsigned int, nothrow);
1145   case LibFunc_msvc_new_int_nothrow:
1146   // new(unsigned long long, nothrow);
1147   case LibFunc_msvc_new_longlong_nothrow:
1148   // new[](unsigned int, nothrow);
1149   case LibFunc_msvc_new_array_int_nothrow:
1150   // new[](unsigned long long, nothrow);
1151   case LibFunc_msvc_new_array_longlong_nothrow:
1152   // new(unsigned int, align_val_t)
1153   case LibFunc_ZnwjSt11align_val_t:
1154   // new(unsigned long, align_val_t)
1155   case LibFunc_ZnwmSt11align_val_t:
1156   // new[](unsigned int, align_val_t)
1157   case LibFunc_ZnajSt11align_val_t:
1158   // new[](unsigned long, align_val_t)
1159   case LibFunc_ZnamSt11align_val_t:
1160     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1161 
1162   // new(unsigned int, align_val_t, nothrow)
1163   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1164   // new(unsigned long, align_val_t, nothrow)
1165   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1166   // new[](unsigned int, align_val_t, nothrow)
1167   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1168   // new[](unsigned long, align_val_t, nothrow)
1169   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1170     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1171 
1172   // void operator delete[](void*);
1173   case LibFunc_ZdaPv:
1174   // void operator delete(void*);
1175   case LibFunc_ZdlPv:
1176   // void operator delete[](void*);
1177   case LibFunc_msvc_delete_array_ptr32:
1178   // void operator delete[](void*);
1179   case LibFunc_msvc_delete_array_ptr64:
1180   // void operator delete(void*);
1181   case LibFunc_msvc_delete_ptr32:
1182   // void operator delete(void*);
1183   case LibFunc_msvc_delete_ptr64:
1184     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1185 
1186   // void operator delete[](void*, nothrow);
1187   case LibFunc_ZdaPvRKSt9nothrow_t:
1188   // void operator delete[](void*, unsigned int);
1189   case LibFunc_ZdaPvj:
1190   // void operator delete[](void*, unsigned long);
1191   case LibFunc_ZdaPvm:
1192   // void operator delete(void*, nothrow);
1193   case LibFunc_ZdlPvRKSt9nothrow_t:
1194   // void operator delete(void*, unsigned int);
1195   case LibFunc_ZdlPvj:
1196   // void operator delete(void*, unsigned long);
1197   case LibFunc_ZdlPvm:
1198   // void operator delete(void*, align_val_t)
1199   case LibFunc_ZdlPvSt11align_val_t:
1200   // void operator delete[](void*, align_val_t)
1201   case LibFunc_ZdaPvSt11align_val_t:
1202   // void operator delete[](void*, unsigned int);
1203   case LibFunc_msvc_delete_array_ptr32_int:
1204   // void operator delete[](void*, nothrow);
1205   case LibFunc_msvc_delete_array_ptr32_nothrow:
1206   // void operator delete[](void*, unsigned long long);
1207   case LibFunc_msvc_delete_array_ptr64_longlong:
1208   // void operator delete[](void*, nothrow);
1209   case LibFunc_msvc_delete_array_ptr64_nothrow:
1210   // void operator delete(void*, unsigned int);
1211   case LibFunc_msvc_delete_ptr32_int:
1212   // void operator delete(void*, nothrow);
1213   case LibFunc_msvc_delete_ptr32_nothrow:
1214   // void operator delete(void*, unsigned long long);
1215   case LibFunc_msvc_delete_ptr64_longlong:
1216   // void operator delete(void*, nothrow);
1217   case LibFunc_msvc_delete_ptr64_nothrow:
1218     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1219 
1220   // void operator delete(void*, align_val_t, nothrow)
1221   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1222   // void operator delete[](void*, align_val_t, nothrow)
1223   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1224     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1225 
1226   case LibFunc_memset_pattern16:
1227     return (!FTy.isVarArg() && NumParams == 3 &&
1228             FTy.getParamType(0)->isPointerTy() &&
1229             FTy.getParamType(1)->isPointerTy() &&
1230             FTy.getParamType(2)->isIntegerTy());
1231 
1232   case LibFunc_cxa_guard_abort:
1233   case LibFunc_cxa_guard_acquire:
1234   case LibFunc_cxa_guard_release:
1235   case LibFunc_nvvm_reflect:
1236     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1237 
1238   case LibFunc_sincospi_stret:
1239   case LibFunc_sincospif_stret:
1240     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1241 
1242   case LibFunc_acos:
1243   case LibFunc_acos_finite:
1244   case LibFunc_acosf:
1245   case LibFunc_acosf_finite:
1246   case LibFunc_acosh:
1247   case LibFunc_acosh_finite:
1248   case LibFunc_acoshf:
1249   case LibFunc_acoshf_finite:
1250   case LibFunc_acoshl:
1251   case LibFunc_acoshl_finite:
1252   case LibFunc_acosl:
1253   case LibFunc_acosl_finite:
1254   case LibFunc_asin:
1255   case LibFunc_asin_finite:
1256   case LibFunc_asinf:
1257   case LibFunc_asinf_finite:
1258   case LibFunc_asinh:
1259   case LibFunc_asinhf:
1260   case LibFunc_asinhl:
1261   case LibFunc_asinl:
1262   case LibFunc_asinl_finite:
1263   case LibFunc_atan:
1264   case LibFunc_atanf:
1265   case LibFunc_atanh:
1266   case LibFunc_atanh_finite:
1267   case LibFunc_atanhf:
1268   case LibFunc_atanhf_finite:
1269   case LibFunc_atanhl:
1270   case LibFunc_atanhl_finite:
1271   case LibFunc_atanl:
1272   case LibFunc_cbrt:
1273   case LibFunc_cbrtf:
1274   case LibFunc_cbrtl:
1275   case LibFunc_ceil:
1276   case LibFunc_ceilf:
1277   case LibFunc_ceill:
1278   case LibFunc_cos:
1279   case LibFunc_cosf:
1280   case LibFunc_cosh:
1281   case LibFunc_cosh_finite:
1282   case LibFunc_coshf:
1283   case LibFunc_coshf_finite:
1284   case LibFunc_coshl:
1285   case LibFunc_coshl_finite:
1286   case LibFunc_cosl:
1287   case LibFunc_exp10:
1288   case LibFunc_exp10_finite:
1289   case LibFunc_exp10f:
1290   case LibFunc_exp10f_finite:
1291   case LibFunc_exp10l:
1292   case LibFunc_exp10l_finite:
1293   case LibFunc_exp2:
1294   case LibFunc_exp2_finite:
1295   case LibFunc_exp2f:
1296   case LibFunc_exp2f_finite:
1297   case LibFunc_exp2l:
1298   case LibFunc_exp2l_finite:
1299   case LibFunc_exp:
1300   case LibFunc_exp_finite:
1301   case LibFunc_expf:
1302   case LibFunc_expf_finite:
1303   case LibFunc_expl:
1304   case LibFunc_expl_finite:
1305   case LibFunc_expm1:
1306   case LibFunc_expm1f:
1307   case LibFunc_expm1l:
1308   case LibFunc_fabs:
1309   case LibFunc_fabsf:
1310   case LibFunc_fabsl:
1311   case LibFunc_floor:
1312   case LibFunc_floorf:
1313   case LibFunc_floorl:
1314   case LibFunc_log10:
1315   case LibFunc_log10_finite:
1316   case LibFunc_log10f:
1317   case LibFunc_log10f_finite:
1318   case LibFunc_log10l:
1319   case LibFunc_log10l_finite:
1320   case LibFunc_log1p:
1321   case LibFunc_log1pf:
1322   case LibFunc_log1pl:
1323   case LibFunc_log2:
1324   case LibFunc_log2_finite:
1325   case LibFunc_log2f:
1326   case LibFunc_log2f_finite:
1327   case LibFunc_log2l:
1328   case LibFunc_log2l_finite:
1329   case LibFunc_log:
1330   case LibFunc_log_finite:
1331   case LibFunc_logb:
1332   case LibFunc_logbf:
1333   case LibFunc_logbl:
1334   case LibFunc_logf:
1335   case LibFunc_logf_finite:
1336   case LibFunc_logl:
1337   case LibFunc_logl_finite:
1338   case LibFunc_nearbyint:
1339   case LibFunc_nearbyintf:
1340   case LibFunc_nearbyintl:
1341   case LibFunc_rint:
1342   case LibFunc_rintf:
1343   case LibFunc_rintl:
1344   case LibFunc_round:
1345   case LibFunc_roundf:
1346   case LibFunc_roundl:
1347   case LibFunc_sin:
1348   case LibFunc_sinf:
1349   case LibFunc_sinh:
1350   case LibFunc_sinh_finite:
1351   case LibFunc_sinhf:
1352   case LibFunc_sinhf_finite:
1353   case LibFunc_sinhl:
1354   case LibFunc_sinhl_finite:
1355   case LibFunc_sinl:
1356   case LibFunc_sqrt:
1357   case LibFunc_sqrt_finite:
1358   case LibFunc_sqrtf:
1359   case LibFunc_sqrtf_finite:
1360   case LibFunc_sqrtl:
1361   case LibFunc_sqrtl_finite:
1362   case LibFunc_tan:
1363   case LibFunc_tanf:
1364   case LibFunc_tanh:
1365   case LibFunc_tanhf:
1366   case LibFunc_tanhl:
1367   case LibFunc_tanl:
1368   case LibFunc_trunc:
1369   case LibFunc_truncf:
1370   case LibFunc_truncl:
1371     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1372             FTy.getReturnType() == FTy.getParamType(0));
1373 
1374   case LibFunc_atan2:
1375   case LibFunc_atan2_finite:
1376   case LibFunc_atan2f:
1377   case LibFunc_atan2f_finite:
1378   case LibFunc_atan2l:
1379   case LibFunc_atan2l_finite:
1380   case LibFunc_fmin:
1381   case LibFunc_fminf:
1382   case LibFunc_fminl:
1383   case LibFunc_fmax:
1384   case LibFunc_fmaxf:
1385   case LibFunc_fmaxl:
1386   case LibFunc_fmod:
1387   case LibFunc_fmodf:
1388   case LibFunc_fmodl:
1389   case LibFunc_copysign:
1390   case LibFunc_copysignf:
1391   case LibFunc_copysignl:
1392   case LibFunc_pow:
1393   case LibFunc_pow_finite:
1394   case LibFunc_powf:
1395   case LibFunc_powf_finite:
1396   case LibFunc_powl:
1397   case LibFunc_powl_finite:
1398     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1399             FTy.getReturnType() == FTy.getParamType(0) &&
1400             FTy.getReturnType() == FTy.getParamType(1));
1401 
1402   case LibFunc_ldexp:
1403   case LibFunc_ldexpf:
1404   case LibFunc_ldexpl:
1405     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1406             FTy.getReturnType() == FTy.getParamType(0) &&
1407             FTy.getParamType(1)->isIntegerTy(32));
1408 
1409   case LibFunc_ffs:
1410   case LibFunc_ffsl:
1411   case LibFunc_ffsll:
1412   case LibFunc_fls:
1413   case LibFunc_flsl:
1414   case LibFunc_flsll:
1415     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1416             FTy.getParamType(0)->isIntegerTy());
1417 
1418   case LibFunc_isdigit:
1419   case LibFunc_isascii:
1420   case LibFunc_toascii:
1421   case LibFunc_putchar:
1422   case LibFunc_putchar_unlocked:
1423     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1424             FTy.getReturnType() == FTy.getParamType(0));
1425 
1426   case LibFunc_abs:
1427   case LibFunc_labs:
1428   case LibFunc_llabs:
1429     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1430             FTy.getReturnType() == FTy.getParamType(0));
1431 
1432   case LibFunc_cxa_atexit:
1433     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1434             FTy.getParamType(0)->isPointerTy() &&
1435             FTy.getParamType(1)->isPointerTy() &&
1436             FTy.getParamType(2)->isPointerTy());
1437 
1438   case LibFunc_sinpi:
1439   case LibFunc_cospi:
1440     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1441             FTy.getReturnType() == FTy.getParamType(0));
1442 
1443   case LibFunc_sinpif:
1444   case LibFunc_cospif:
1445     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1446             FTy.getReturnType() == FTy.getParamType(0));
1447 
1448   case LibFunc_strnlen:
1449     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1450             FTy.getParamType(0) == PCharTy &&
1451             FTy.getParamType(1) == SizeTTy);
1452 
1453   case LibFunc_posix_memalign:
1454     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1455             FTy.getParamType(0)->isPointerTy() &&
1456             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1457 
1458   case LibFunc_wcslen:
1459     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1460             FTy.getReturnType()->isIntegerTy());
1461 
1462   case LibFunc_cabs:
1463   case LibFunc_cabsf:
1464   case LibFunc_cabsl: {
1465     Type* RetTy = FTy.getReturnType();
1466     if (!RetTy->isFloatingPointTy())
1467       return false;
1468 
1469     // NOTE: These prototypes are target specific and currently support
1470     // "complex" passed as an array or discrete real & imaginary parameters.
1471     // Add other calling conventions to enable libcall optimizations.
1472     if (NumParams == 1)
1473       return (FTy.getParamType(0)->isArrayTy() &&
1474               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1475               FTy.getParamType(0)->getArrayElementType() == RetTy);
1476     else if (NumParams == 2)
1477       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1478     else
1479       return false;
1480   }
1481   case LibFunc::NumLibFuncs:
1482     break;
1483   }
1484 
1485   llvm_unreachable("Invalid libfunc");
1486 }
1487 
1488 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1489                                        LibFunc &F) const {
1490   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1491   // intrinsics, this ends up being an interesting compile time win since we
1492   // avoid string normalization and comparison.
1493   if (FDecl.isIntrinsic()) return false;
1494 
1495   const DataLayout *DL =
1496       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1497   return getLibFunc(FDecl.getName(), F) &&
1498          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1499 }
1500 
1501 void TargetLibraryInfoImpl::disableAllFunctions() {
1502   memset(AvailableArray, 0, sizeof(AvailableArray));
1503 }
1504 
1505 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1506   return LHS.ScalarFnName < RHS.ScalarFnName;
1507 }
1508 
1509 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1510   return LHS.VectorFnName < RHS.VectorFnName;
1511 }
1512 
1513 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1514   return LHS.ScalarFnName < S;
1515 }
1516 
1517 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1518   return LHS.VectorFnName < S;
1519 }
1520 
1521 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1522   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1523   llvm::sort(VectorDescs, compareByScalarFnName);
1524 
1525   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1526   llvm::sort(ScalarDescs, compareByVectorFnName);
1527 }
1528 
1529 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1530     enum VectorLibrary VecLib) {
1531   switch (VecLib) {
1532   case Accelerate: {
1533     const VecDesc VecFuncs[] = {
1534     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1535     #include "llvm/Analysis/VecFuncs.def"
1536     };
1537     addVectorizableFunctions(VecFuncs);
1538     break;
1539   }
1540   case SVML: {
1541     const VecDesc VecFuncs[] = {
1542     #define TLI_DEFINE_SVML_VECFUNCS
1543     #include "llvm/Analysis/VecFuncs.def"
1544     };
1545     addVectorizableFunctions(VecFuncs);
1546     break;
1547   }
1548   case NoLibrary:
1549     break;
1550   }
1551 }
1552 
1553 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1554   funcName = sanitizeFunctionName(funcName);
1555   if (funcName.empty())
1556     return false;
1557 
1558   std::vector<VecDesc>::const_iterator I =
1559       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1560   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1561 }
1562 
1563 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1564                                                        unsigned VF) const {
1565   F = sanitizeFunctionName(F);
1566   if (F.empty())
1567     return F;
1568   std::vector<VecDesc>::const_iterator I =
1569       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1570   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1571     if (I->VectorizationFactor == VF)
1572       return I->VectorFnName;
1573     ++I;
1574   }
1575   return StringRef();
1576 }
1577 
1578 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1579                                                        unsigned &VF) const {
1580   F = sanitizeFunctionName(F);
1581   if (F.empty())
1582     return F;
1583 
1584   std::vector<VecDesc>::const_iterator I =
1585       llvm::lower_bound(ScalarDescs, F, compareWithVectorFnName);
1586   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1587     return StringRef();
1588   VF = I->VectorizationFactor;
1589   return I->ScalarFnName;
1590 }
1591 
1592 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M,
1593                                              ModuleAnalysisManager &) {
1594   if (PresetInfoImpl)
1595     return TargetLibraryInfo(*PresetInfoImpl);
1596 
1597   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
1598 }
1599 
1600 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1601                                              FunctionAnalysisManager &) {
1602   if (PresetInfoImpl)
1603     return TargetLibraryInfo(*PresetInfoImpl);
1604 
1605   return TargetLibraryInfo(
1606       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1607 }
1608 
1609 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1610   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1611       Impls[T.normalize()];
1612   if (!Impl)
1613     Impl.reset(new TargetLibraryInfoImpl(T));
1614 
1615   return *Impl;
1616 }
1617 
1618 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1619   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1620       M.getModuleFlag("wchar_size")))
1621     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1622   return 0;
1623 }
1624 
1625 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1626     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1627   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1628 }
1629 
1630 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1631     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1632   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1633 }
1634 
1635 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1636     const TargetLibraryInfoImpl &TLIImpl)
1637     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1638   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1639 }
1640 
1641 AnalysisKey TargetLibraryAnalysis::Key;
1642 
1643 // Register the basic pass.
1644 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1645                 "Target Library Information", false, true)
1646 char TargetLibraryInfoWrapperPass::ID = 0;
1647 
1648 void TargetLibraryInfoWrapperPass::anchor() {}
1649