xref: /freebsd-src/contrib/llvm-project/llvm/lib/Analysis/TargetLibraryInfo.cpp (revision a7dea1671b87c07d2d266f836bfa8b58efc7c134) 
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::MASSV, "MASSV",
27                           "IBM MASS vector library"),
28                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
29                           "Intel SVML library")));
30 
31 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
32     {
33 #define TLI_DEFINE_STRING
34 #include "llvm/Analysis/TargetLibraryInfo.def"
35 };
36 
37 static bool hasSinCosPiStret(const Triple &T) {
38   // Only Darwin variants have _stret versions of combined trig functions.
39   if (!T.isOSDarwin())
40     return false;
41 
42   // The ABI is rather complicated on x86, so don't do anything special there.
43   if (T.getArch() == Triple::x86)
44     return false;
45 
46   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
47     return false;
48 
49   if (T.isiOS() && T.isOSVersionLT(7, 0))
50     return false;
51 
52   return true;
53 }
54 
55 static bool hasBcmp(const Triple &TT) {
56   // Posix removed support from bcmp() in 2001, but the glibc and several
57   // implementations of the libc still have it.
58   if (TT.isOSLinux())
59     return TT.isGNUEnvironment() || TT.isMusl();
60   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
61   // not have it.
62   return TT.isOSFreeBSD() || TT.isOSSolaris();
63 }
64 
65 /// Initialize the set of available library functions based on the specified
66 /// target triple. This should be carefully written so that a missing target
67 /// triple gets a sane set of defaults.
68 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
69                        ArrayRef<StringLiteral> StandardNames) {
70   // Verify that the StandardNames array is in alphabetical order.
71   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
72                         [](StringRef LHS, StringRef RHS) {
73                           return LHS < RHS;
74                         }) &&
75          "TargetLibraryInfoImpl function names must be sorted");
76 
77   // Set IO unlocked variants as unavailable
78   // Set them as available per system below
79   TLI.setUnavailable(LibFunc_getchar_unlocked);
80   TLI.setUnavailable(LibFunc_putc_unlocked);
81   TLI.setUnavailable(LibFunc_putchar_unlocked);
82   TLI.setUnavailable(LibFunc_fputc_unlocked);
83   TLI.setUnavailable(LibFunc_fgetc_unlocked);
84   TLI.setUnavailable(LibFunc_fread_unlocked);
85   TLI.setUnavailable(LibFunc_fwrite_unlocked);
86   TLI.setUnavailable(LibFunc_fputs_unlocked);
87   TLI.setUnavailable(LibFunc_fgets_unlocked);
88 
89   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
90        ShouldSignExtI32Param = false;
91   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
92   // returns corresponding to C-level ints and unsigned ints.
93   if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
94       T.getArch() == Triple::systemz) {
95     ShouldExtI32Param = true;
96     ShouldExtI32Return = true;
97   }
98   // Mips, on the other hand, needs signext on i32 parameters corresponding
99   // to both signed and unsigned ints.
100   if (T.isMIPS()) {
101     ShouldSignExtI32Param = true;
102   }
103   TLI.setShouldExtI32Param(ShouldExtI32Param);
104   TLI.setShouldExtI32Return(ShouldExtI32Return);
105   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
106 
107   if (T.getArch() == Triple::r600 ||
108       T.getArch() == Triple::amdgcn)
109     TLI.disableAllFunctions();
110 
111   // There are no library implementations of memcpy and memset for AMD gpus and
112   // these can be difficult to lower in the backend.
113   if (T.getArch() == Triple::r600 ||
114       T.getArch() == Triple::amdgcn) {
115     TLI.setUnavailable(LibFunc_memcpy);
116     TLI.setUnavailable(LibFunc_memset);
117     TLI.setUnavailable(LibFunc_memset_pattern16);
118     return;
119   }
120 
121   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
122   // All versions of watchOS support it.
123   if (T.isMacOSX()) {
124     // available IO unlocked variants on Mac OS X
125     TLI.setAvailable(LibFunc_getc_unlocked);
126     TLI.setAvailable(LibFunc_getchar_unlocked);
127     TLI.setAvailable(LibFunc_putc_unlocked);
128     TLI.setAvailable(LibFunc_putchar_unlocked);
129 
130     if (T.isMacOSXVersionLT(10, 5))
131       TLI.setUnavailable(LibFunc_memset_pattern16);
132   } else if (T.isiOS()) {
133     if (T.isOSVersionLT(3, 0))
134       TLI.setUnavailable(LibFunc_memset_pattern16);
135   } else if (!T.isWatchOS()) {
136     TLI.setUnavailable(LibFunc_memset_pattern16);
137   }
138 
139   if (!hasSinCosPiStret(T)) {
140     TLI.setUnavailable(LibFunc_sinpi);
141     TLI.setUnavailable(LibFunc_sinpif);
142     TLI.setUnavailable(LibFunc_cospi);
143     TLI.setUnavailable(LibFunc_cospif);
144     TLI.setUnavailable(LibFunc_sincospi_stret);
145     TLI.setUnavailable(LibFunc_sincospif_stret);
146   }
147 
148   if (!hasBcmp(T))
149     TLI.setUnavailable(LibFunc_bcmp);
150 
151   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
152       !T.isMacOSXVersionLT(10, 7)) {
153     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
154     // we don't care about) have two versions; on recent OSX, the one we want
155     // has a $UNIX2003 suffix. The two implementations are identical except
156     // for the return value in some edge cases.  However, we don't want to
157     // generate code that depends on the old symbols.
158     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
159     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
160   }
161 
162   // iprintf and friends are only available on XCore, TCE, and Emscripten.
163   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
164       T.getOS() != Triple::Emscripten) {
165     TLI.setUnavailable(LibFunc_iprintf);
166     TLI.setUnavailable(LibFunc_siprintf);
167     TLI.setUnavailable(LibFunc_fiprintf);
168   }
169 
170   // __small_printf and friends are only available on Emscripten.
171   if (T.getOS() != Triple::Emscripten) {
172     TLI.setUnavailable(LibFunc_small_printf);
173     TLI.setUnavailable(LibFunc_small_sprintf);
174     TLI.setUnavailable(LibFunc_small_fprintf);
175   }
176 
177   if (T.isOSWindows() && !T.isOSCygMing()) {
178     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
179     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
180     // XXX: In order to use an MSVCRT older than VC19,
181     // the specific library version must be explicit in the target triple,
182     // e.g., x86_64-pc-windows-msvc18.
183     bool hasPartialC99 = true;
184     if (T.isKnownWindowsMSVCEnvironment()) {
185       unsigned Major, Minor, Micro;
186       T.getEnvironmentVersion(Major, Minor, Micro);
187       hasPartialC99 = (Major == 0 || Major >= 19);
188     }
189 
190     // Latest targets support C89 math functions, in part.
191     bool isARM = (T.getArch() == Triple::aarch64 ||
192                   T.getArch() == Triple::arm);
193     bool hasPartialFloat = (isARM ||
194                             T.getArch() == Triple::x86_64);
195 
196     // Win32 does not support float C89 math functions, in general.
197     if (!hasPartialFloat) {
198       TLI.setUnavailable(LibFunc_acosf);
199       TLI.setUnavailable(LibFunc_asinf);
200       TLI.setUnavailable(LibFunc_atan2f);
201       TLI.setUnavailable(LibFunc_atanf);
202       TLI.setUnavailable(LibFunc_ceilf);
203       TLI.setUnavailable(LibFunc_cosf);
204       TLI.setUnavailable(LibFunc_coshf);
205       TLI.setUnavailable(LibFunc_expf);
206       TLI.setUnavailable(LibFunc_floorf);
207       TLI.setUnavailable(LibFunc_fmodf);
208       TLI.setUnavailable(LibFunc_log10f);
209       TLI.setUnavailable(LibFunc_logf);
210       TLI.setUnavailable(LibFunc_modff);
211       TLI.setUnavailable(LibFunc_powf);
212       TLI.setUnavailable(LibFunc_sinf);
213       TLI.setUnavailable(LibFunc_sinhf);
214       TLI.setUnavailable(LibFunc_sqrtf);
215       TLI.setUnavailable(LibFunc_tanf);
216       TLI.setUnavailable(LibFunc_tanhf);
217     }
218     if (!isARM)
219       TLI.setUnavailable(LibFunc_fabsf);
220     TLI.setUnavailable(LibFunc_frexpf);
221     TLI.setUnavailable(LibFunc_ldexpf);
222 
223     // Win32 does not support long double C89 math functions.
224     TLI.setUnavailable(LibFunc_acosl);
225     TLI.setUnavailable(LibFunc_asinl);
226     TLI.setUnavailable(LibFunc_atan2l);
227     TLI.setUnavailable(LibFunc_atanl);
228     TLI.setUnavailable(LibFunc_ceill);
229     TLI.setUnavailable(LibFunc_cosl);
230     TLI.setUnavailable(LibFunc_coshl);
231     TLI.setUnavailable(LibFunc_expl);
232     TLI.setUnavailable(LibFunc_fabsl);
233     TLI.setUnavailable(LibFunc_floorl);
234     TLI.setUnavailable(LibFunc_fmodl);
235     TLI.setUnavailable(LibFunc_frexpl);
236     TLI.setUnavailable(LibFunc_ldexpl);
237     TLI.setUnavailable(LibFunc_log10l);
238     TLI.setUnavailable(LibFunc_logl);
239     TLI.setUnavailable(LibFunc_modfl);
240     TLI.setUnavailable(LibFunc_powl);
241     TLI.setUnavailable(LibFunc_sinl);
242     TLI.setUnavailable(LibFunc_sinhl);
243     TLI.setUnavailable(LibFunc_sqrtl);
244     TLI.setUnavailable(LibFunc_tanl);
245     TLI.setUnavailable(LibFunc_tanhl);
246 
247     // Win32 does not fully support C99 math functions.
248     if (!hasPartialC99) {
249       TLI.setUnavailable(LibFunc_acosh);
250       TLI.setUnavailable(LibFunc_acoshf);
251       TLI.setUnavailable(LibFunc_asinh);
252       TLI.setUnavailable(LibFunc_asinhf);
253       TLI.setUnavailable(LibFunc_atanh);
254       TLI.setUnavailable(LibFunc_atanhf);
255       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
256       TLI.setUnavailable(LibFunc_cabsf);
257       TLI.setUnavailable(LibFunc_cbrt);
258       TLI.setUnavailable(LibFunc_cbrtf);
259       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
260       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
261       TLI.setUnavailable(LibFunc_exp2);
262       TLI.setUnavailable(LibFunc_exp2f);
263       TLI.setUnavailable(LibFunc_expm1);
264       TLI.setUnavailable(LibFunc_expm1f);
265       TLI.setUnavailable(LibFunc_fmax);
266       TLI.setUnavailable(LibFunc_fmaxf);
267       TLI.setUnavailable(LibFunc_fmin);
268       TLI.setUnavailable(LibFunc_fminf);
269       TLI.setUnavailable(LibFunc_log1p);
270       TLI.setUnavailable(LibFunc_log1pf);
271       TLI.setUnavailable(LibFunc_log2);
272       TLI.setUnavailable(LibFunc_log2f);
273       TLI.setAvailableWithName(LibFunc_logb, "_logb");
274       if (hasPartialFloat)
275         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
276       else
277         TLI.setUnavailable(LibFunc_logbf);
278       TLI.setUnavailable(LibFunc_rint);
279       TLI.setUnavailable(LibFunc_rintf);
280       TLI.setUnavailable(LibFunc_round);
281       TLI.setUnavailable(LibFunc_roundf);
282       TLI.setUnavailable(LibFunc_trunc);
283       TLI.setUnavailable(LibFunc_truncf);
284     }
285 
286     // Win32 does not support long double C99 math functions.
287     TLI.setUnavailable(LibFunc_acoshl);
288     TLI.setUnavailable(LibFunc_asinhl);
289     TLI.setUnavailable(LibFunc_atanhl);
290     TLI.setUnavailable(LibFunc_cabsl);
291     TLI.setUnavailable(LibFunc_cbrtl);
292     TLI.setUnavailable(LibFunc_copysignl);
293     TLI.setUnavailable(LibFunc_exp2l);
294     TLI.setUnavailable(LibFunc_expm1l);
295     TLI.setUnavailable(LibFunc_fmaxl);
296     TLI.setUnavailable(LibFunc_fminl);
297     TLI.setUnavailable(LibFunc_log1pl);
298     TLI.setUnavailable(LibFunc_log2l);
299     TLI.setUnavailable(LibFunc_logbl);
300     TLI.setUnavailable(LibFunc_nearbyintl);
301     TLI.setUnavailable(LibFunc_rintl);
302     TLI.setUnavailable(LibFunc_roundl);
303     TLI.setUnavailable(LibFunc_truncl);
304 
305     // Win32 does not support these functions, but
306     // they are generally available on POSIX-compliant systems.
307     TLI.setUnavailable(LibFunc_access);
308     TLI.setUnavailable(LibFunc_bcmp);
309     TLI.setUnavailable(LibFunc_bcopy);
310     TLI.setUnavailable(LibFunc_bzero);
311     TLI.setUnavailable(LibFunc_chmod);
312     TLI.setUnavailable(LibFunc_chown);
313     TLI.setUnavailable(LibFunc_closedir);
314     TLI.setUnavailable(LibFunc_ctermid);
315     TLI.setUnavailable(LibFunc_fdopen);
316     TLI.setUnavailable(LibFunc_ffs);
317     TLI.setUnavailable(LibFunc_fileno);
318     TLI.setUnavailable(LibFunc_flockfile);
319     TLI.setUnavailable(LibFunc_fseeko);
320     TLI.setUnavailable(LibFunc_fstat);
321     TLI.setUnavailable(LibFunc_fstatvfs);
322     TLI.setUnavailable(LibFunc_ftello);
323     TLI.setUnavailable(LibFunc_ftrylockfile);
324     TLI.setUnavailable(LibFunc_funlockfile);
325     TLI.setUnavailable(LibFunc_getitimer);
326     TLI.setUnavailable(LibFunc_getlogin_r);
327     TLI.setUnavailable(LibFunc_getpwnam);
328     TLI.setUnavailable(LibFunc_gettimeofday);
329     TLI.setUnavailable(LibFunc_htonl);
330     TLI.setUnavailable(LibFunc_htons);
331     TLI.setUnavailable(LibFunc_lchown);
332     TLI.setUnavailable(LibFunc_lstat);
333     TLI.setUnavailable(LibFunc_memccpy);
334     TLI.setUnavailable(LibFunc_mkdir);
335     TLI.setUnavailable(LibFunc_ntohl);
336     TLI.setUnavailable(LibFunc_ntohs);
337     TLI.setUnavailable(LibFunc_open);
338     TLI.setUnavailable(LibFunc_opendir);
339     TLI.setUnavailable(LibFunc_pclose);
340     TLI.setUnavailable(LibFunc_popen);
341     TLI.setUnavailable(LibFunc_pread);
342     TLI.setUnavailable(LibFunc_pwrite);
343     TLI.setUnavailable(LibFunc_read);
344     TLI.setUnavailable(LibFunc_readlink);
345     TLI.setUnavailable(LibFunc_realpath);
346     TLI.setUnavailable(LibFunc_rmdir);
347     TLI.setUnavailable(LibFunc_setitimer);
348     TLI.setUnavailable(LibFunc_stat);
349     TLI.setUnavailable(LibFunc_statvfs);
350     TLI.setUnavailable(LibFunc_stpcpy);
351     TLI.setUnavailable(LibFunc_stpncpy);
352     TLI.setUnavailable(LibFunc_strcasecmp);
353     TLI.setUnavailable(LibFunc_strncasecmp);
354     TLI.setUnavailable(LibFunc_times);
355     TLI.setUnavailable(LibFunc_uname);
356     TLI.setUnavailable(LibFunc_unlink);
357     TLI.setUnavailable(LibFunc_unsetenv);
358     TLI.setUnavailable(LibFunc_utime);
359     TLI.setUnavailable(LibFunc_utimes);
360     TLI.setUnavailable(LibFunc_write);
361   }
362 
363   switch (T.getOS()) {
364   case Triple::MacOSX:
365     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
366     // and their names are __exp10 and __exp10f. exp10l is not available on
367     // OS X or iOS.
368     TLI.setUnavailable(LibFunc_exp10l);
369     if (T.isMacOSXVersionLT(10, 9)) {
370       TLI.setUnavailable(LibFunc_exp10);
371       TLI.setUnavailable(LibFunc_exp10f);
372     } else {
373       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
374       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
375     }
376     break;
377   case Triple::IOS:
378   case Triple::TvOS:
379   case Triple::WatchOS:
380     TLI.setUnavailable(LibFunc_exp10l);
381     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
382                            (T.isOSVersionLT(9, 0) &&
383                             (T.getArch() == Triple::x86 ||
384                              T.getArch() == Triple::x86_64)))) {
385       TLI.setUnavailable(LibFunc_exp10);
386       TLI.setUnavailable(LibFunc_exp10f);
387     } else {
388       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
389       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
390     }
391     break;
392   case Triple::Linux:
393     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
394     // buggy prior to glibc version 2.18. Until this version is widely deployed
395     // or we have a reasonable detection strategy, we cannot use exp10 reliably
396     // on Linux.
397     //
398     // Fall through to disable all of them.
399     LLVM_FALLTHROUGH;
400   default:
401     TLI.setUnavailable(LibFunc_exp10);
402     TLI.setUnavailable(LibFunc_exp10f);
403     TLI.setUnavailable(LibFunc_exp10l);
404   }
405 
406   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
407   // Linux (GLIBC):
408   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
409   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
410   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
411   switch (T.getOS()) {
412   case Triple::Darwin:
413   case Triple::MacOSX:
414   case Triple::IOS:
415   case Triple::TvOS:
416   case Triple::WatchOS:
417   case Triple::FreeBSD:
418   case Triple::Linux:
419     break;
420   default:
421     TLI.setUnavailable(LibFunc_ffsl);
422   }
423 
424   // ffsll is available on at least FreeBSD and Linux (GLIBC):
425   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
426   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
427   switch (T.getOS()) {
428   case Triple::Darwin:
429   case Triple::MacOSX:
430   case Triple::IOS:
431   case Triple::TvOS:
432   case Triple::WatchOS:
433   case Triple::FreeBSD:
434   case Triple::Linux:
435     break;
436   default:
437     TLI.setUnavailable(LibFunc_ffsll);
438   }
439 
440   // The following functions are available on at least FreeBSD:
441   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
442   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
443   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
444   if (!T.isOSFreeBSD()) {
445     TLI.setUnavailable(LibFunc_fls);
446     TLI.setUnavailable(LibFunc_flsl);
447     TLI.setUnavailable(LibFunc_flsll);
448   }
449 
450   // The following functions are only available on GNU/Linux (using glibc).
451   // Linux variants without glibc (eg: bionic, musl) may have some subset.
452   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
453     TLI.setUnavailable(LibFunc_dunder_strdup);
454     TLI.setUnavailable(LibFunc_dunder_strtok_r);
455     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
456     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
457     TLI.setUnavailable(LibFunc_under_IO_getc);
458     TLI.setUnavailable(LibFunc_under_IO_putc);
459     // But, Android and musl have memalign.
460     if (!T.isAndroid() && !T.isMusl())
461       TLI.setUnavailable(LibFunc_memalign);
462     TLI.setUnavailable(LibFunc_fopen64);
463     TLI.setUnavailable(LibFunc_fseeko64);
464     TLI.setUnavailable(LibFunc_fstat64);
465     TLI.setUnavailable(LibFunc_fstatvfs64);
466     TLI.setUnavailable(LibFunc_ftello64);
467     TLI.setUnavailable(LibFunc_lstat64);
468     TLI.setUnavailable(LibFunc_open64);
469     TLI.setUnavailable(LibFunc_stat64);
470     TLI.setUnavailable(LibFunc_statvfs64);
471     TLI.setUnavailable(LibFunc_tmpfile64);
472 
473     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
474     TLI.setUnavailable(LibFunc_acos_finite);
475     TLI.setUnavailable(LibFunc_acosf_finite);
476     TLI.setUnavailable(LibFunc_acosl_finite);
477     TLI.setUnavailable(LibFunc_acosh_finite);
478     TLI.setUnavailable(LibFunc_acoshf_finite);
479     TLI.setUnavailable(LibFunc_acoshl_finite);
480     TLI.setUnavailable(LibFunc_asin_finite);
481     TLI.setUnavailable(LibFunc_asinf_finite);
482     TLI.setUnavailable(LibFunc_asinl_finite);
483     TLI.setUnavailable(LibFunc_atan2_finite);
484     TLI.setUnavailable(LibFunc_atan2f_finite);
485     TLI.setUnavailable(LibFunc_atan2l_finite);
486     TLI.setUnavailable(LibFunc_atanh_finite);
487     TLI.setUnavailable(LibFunc_atanhf_finite);
488     TLI.setUnavailable(LibFunc_atanhl_finite);
489     TLI.setUnavailable(LibFunc_cosh_finite);
490     TLI.setUnavailable(LibFunc_coshf_finite);
491     TLI.setUnavailable(LibFunc_coshl_finite);
492     TLI.setUnavailable(LibFunc_exp10_finite);
493     TLI.setUnavailable(LibFunc_exp10f_finite);
494     TLI.setUnavailable(LibFunc_exp10l_finite);
495     TLI.setUnavailable(LibFunc_exp2_finite);
496     TLI.setUnavailable(LibFunc_exp2f_finite);
497     TLI.setUnavailable(LibFunc_exp2l_finite);
498     TLI.setUnavailable(LibFunc_exp_finite);
499     TLI.setUnavailable(LibFunc_expf_finite);
500     TLI.setUnavailable(LibFunc_expl_finite);
501     TLI.setUnavailable(LibFunc_log10_finite);
502     TLI.setUnavailable(LibFunc_log10f_finite);
503     TLI.setUnavailable(LibFunc_log10l_finite);
504     TLI.setUnavailable(LibFunc_log2_finite);
505     TLI.setUnavailable(LibFunc_log2f_finite);
506     TLI.setUnavailable(LibFunc_log2l_finite);
507     TLI.setUnavailable(LibFunc_log_finite);
508     TLI.setUnavailable(LibFunc_logf_finite);
509     TLI.setUnavailable(LibFunc_logl_finite);
510     TLI.setUnavailable(LibFunc_pow_finite);
511     TLI.setUnavailable(LibFunc_powf_finite);
512     TLI.setUnavailable(LibFunc_powl_finite);
513     TLI.setUnavailable(LibFunc_sinh_finite);
514     TLI.setUnavailable(LibFunc_sinhf_finite);
515     TLI.setUnavailable(LibFunc_sinhl_finite);
516   }
517 
518   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
519       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
520     // available IO unlocked variants on GNU/Linux and Android P or later
521     TLI.setAvailable(LibFunc_getc_unlocked);
522     TLI.setAvailable(LibFunc_getchar_unlocked);
523     TLI.setAvailable(LibFunc_putc_unlocked);
524     TLI.setAvailable(LibFunc_putchar_unlocked);
525     TLI.setAvailable(LibFunc_fputc_unlocked);
526     TLI.setAvailable(LibFunc_fgetc_unlocked);
527     TLI.setAvailable(LibFunc_fread_unlocked);
528     TLI.setAvailable(LibFunc_fwrite_unlocked);
529     TLI.setAvailable(LibFunc_fputs_unlocked);
530     TLI.setAvailable(LibFunc_fgets_unlocked);
531   }
532 
533   // As currently implemented in clang, NVPTX code has no standard library to
534   // speak of.  Headers provide a standard-ish library implementation, but many
535   // of the signatures are wrong -- for example, many libm functions are not
536   // extern "C".
537   //
538   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
539   // but only used functions are provided to llvm.  Moreover, most of the
540   // functions in libdevice don't map precisely to standard library functions.
541   //
542   // FIXME: Having no standard library prevents e.g. many fastmath
543   // optimizations, so this situation should be fixed.
544   if (T.isNVPTX()) {
545     TLI.disableAllFunctions();
546     TLI.setAvailable(LibFunc_nvvm_reflect);
547   } else {
548     TLI.setUnavailable(LibFunc_nvvm_reflect);
549   }
550 
551   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
552 }
553 
554 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
555   // Default to everything being available.
556   memset(AvailableArray, -1, sizeof(AvailableArray));
557 
558   initialize(*this, Triple(), StandardNames);
559 }
560 
561 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
562   // Default to everything being available.
563   memset(AvailableArray, -1, sizeof(AvailableArray));
564 
565   initialize(*this, T, StandardNames);
566 }
567 
568 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
569     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
570       ShouldExtI32Return(TLI.ShouldExtI32Return),
571       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
572   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
573   VectorDescs = TLI.VectorDescs;
574   ScalarDescs = TLI.ScalarDescs;
575 }
576 
577 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
578     : CustomNames(std::move(TLI.CustomNames)),
579       ShouldExtI32Param(TLI.ShouldExtI32Param),
580       ShouldExtI32Return(TLI.ShouldExtI32Return),
581       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
582   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
583             AvailableArray);
584   VectorDescs = TLI.VectorDescs;
585   ScalarDescs = TLI.ScalarDescs;
586 }
587 
588 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
589   CustomNames = TLI.CustomNames;
590   ShouldExtI32Param = TLI.ShouldExtI32Param;
591   ShouldExtI32Return = TLI.ShouldExtI32Return;
592   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
593   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
594   return *this;
595 }
596 
597 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
598   CustomNames = std::move(TLI.CustomNames);
599   ShouldExtI32Param = TLI.ShouldExtI32Param;
600   ShouldExtI32Return = TLI.ShouldExtI32Return;
601   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
602   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
603             AvailableArray);
604   return *this;
605 }
606 
607 static StringRef sanitizeFunctionName(StringRef funcName) {
608   // Filter out empty names and names containing null bytes, those can't be in
609   // our table.
610   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
611     return StringRef();
612 
613   // Check for \01 prefix that is used to mangle __asm declarations and
614   // strip it if present.
615   return GlobalValue::dropLLVMManglingEscape(funcName);
616 }
617 
618 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
619   funcName = sanitizeFunctionName(funcName);
620   if (funcName.empty())
621     return false;
622 
623   const auto *Start = std::begin(StandardNames);
624   const auto *End = std::end(StandardNames);
625   const auto *I = std::lower_bound(Start, End, funcName);
626   if (I != End && *I == funcName) {
627     F = (LibFunc)(I - Start);
628     return true;
629   }
630   return false;
631 }
632 
633 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
634                                                    LibFunc F,
635                                                    const DataLayout *DL) const {
636   LLVMContext &Ctx = FTy.getContext();
637   Type *PCharTy = Type::getInt8PtrTy(Ctx);
638   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
639   auto IsSizeTTy = [SizeTTy](Type *Ty) {
640     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
641   };
642   unsigned NumParams = FTy.getNumParams();
643 
644   switch (F) {
645   case LibFunc_execl:
646   case LibFunc_execlp:
647   case LibFunc_execle:
648     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
649             FTy.getParamType(1)->isPointerTy() &&
650             FTy.getReturnType()->isIntegerTy(32));
651   case LibFunc_execv:
652   case LibFunc_execvp:
653     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
654             FTy.getParamType(1)->isPointerTy() &&
655             FTy.getReturnType()->isIntegerTy(32));
656   case LibFunc_execvP:
657   case LibFunc_execvpe:
658   case LibFunc_execve:
659     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
660             FTy.getParamType(1)->isPointerTy() &&
661             FTy.getParamType(2)->isPointerTy() &&
662             FTy.getReturnType()->isIntegerTy(32));
663   case LibFunc_strlen:
664     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
665             FTy.getReturnType()->isIntegerTy());
666 
667   case LibFunc_strchr:
668   case LibFunc_strrchr:
669     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
670             FTy.getParamType(0) == FTy.getReturnType() &&
671             FTy.getParamType(1)->isIntegerTy());
672 
673   case LibFunc_strtol:
674   case LibFunc_strtod:
675   case LibFunc_strtof:
676   case LibFunc_strtoul:
677   case LibFunc_strtoll:
678   case LibFunc_strtold:
679   case LibFunc_strtoull:
680     return ((NumParams == 2 || NumParams == 3) &&
681             FTy.getParamType(0)->isPointerTy() &&
682             FTy.getParamType(1)->isPointerTy());
683   case LibFunc_strcat_chk:
684     --NumParams;
685     if (!IsSizeTTy(FTy.getParamType(NumParams)))
686       return false;
687     LLVM_FALLTHROUGH;
688   case LibFunc_strcat:
689     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
690             FTy.getParamType(0) == FTy.getReturnType() &&
691             FTy.getParamType(1) == FTy.getReturnType());
692 
693   case LibFunc_strncat_chk:
694     --NumParams;
695     if (!IsSizeTTy(FTy.getParamType(NumParams)))
696       return false;
697     LLVM_FALLTHROUGH;
698   case LibFunc_strncat:
699     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
700             FTy.getParamType(0) == FTy.getReturnType() &&
701             FTy.getParamType(1) == FTy.getReturnType() &&
702             IsSizeTTy(FTy.getParamType(2)));
703 
704   case LibFunc_strcpy_chk:
705   case LibFunc_stpcpy_chk:
706     --NumParams;
707     if (!IsSizeTTy(FTy.getParamType(NumParams)))
708       return false;
709     LLVM_FALLTHROUGH;
710   case LibFunc_strcpy:
711   case LibFunc_stpcpy:
712     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
713             FTy.getParamType(0) == FTy.getParamType(1) &&
714             FTy.getParamType(0) == PCharTy);
715 
716   case LibFunc_strlcat_chk:
717   case LibFunc_strlcpy_chk:
718     --NumParams;
719     if (!IsSizeTTy(FTy.getParamType(NumParams)))
720       return false;
721     LLVM_FALLTHROUGH;
722   case LibFunc_strlcat:
723   case LibFunc_strlcpy:
724     return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
725            FTy.getParamType(0)->isPointerTy() &&
726            FTy.getParamType(1)->isPointerTy() &&
727            IsSizeTTy(FTy.getParamType(2));
728 
729   case LibFunc_strncpy_chk:
730   case LibFunc_stpncpy_chk:
731     --NumParams;
732     if (!IsSizeTTy(FTy.getParamType(NumParams)))
733       return false;
734     LLVM_FALLTHROUGH;
735   case LibFunc_strncpy:
736   case LibFunc_stpncpy:
737     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
738             FTy.getParamType(0) == FTy.getParamType(1) &&
739             FTy.getParamType(0) == PCharTy &&
740             IsSizeTTy(FTy.getParamType(2)));
741 
742   case LibFunc_strxfrm:
743     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
744             FTy.getParamType(1)->isPointerTy());
745 
746   case LibFunc_strcmp:
747     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
748             FTy.getParamType(0)->isPointerTy() &&
749             FTy.getParamType(0) == FTy.getParamType(1));
750 
751   case LibFunc_strncmp:
752     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
753             FTy.getParamType(0)->isPointerTy() &&
754             FTy.getParamType(0) == FTy.getParamType(1) &&
755             IsSizeTTy(FTy.getParamType(2)));
756 
757   case LibFunc_strspn:
758   case LibFunc_strcspn:
759     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
760             FTy.getParamType(0) == FTy.getParamType(1) &&
761             FTy.getReturnType()->isIntegerTy());
762 
763   case LibFunc_strcoll:
764   case LibFunc_strcasecmp:
765   case LibFunc_strncasecmp:
766     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
767             FTy.getParamType(1)->isPointerTy());
768 
769   case LibFunc_strstr:
770     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
771             FTy.getParamType(0)->isPointerTy() &&
772             FTy.getParamType(1)->isPointerTy());
773 
774   case LibFunc_strpbrk:
775     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
776             FTy.getReturnType() == FTy.getParamType(0) &&
777             FTy.getParamType(0) == FTy.getParamType(1));
778 
779   case LibFunc_strtok:
780   case LibFunc_strtok_r:
781     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
782   case LibFunc_scanf:
783   case LibFunc_setbuf:
784   case LibFunc_setvbuf:
785     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
786   case LibFunc_strdup:
787   case LibFunc_strndup:
788     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
789             FTy.getParamType(0)->isPointerTy());
790   case LibFunc_sscanf:
791   case LibFunc_stat:
792   case LibFunc_statvfs:
793   case LibFunc_siprintf:
794   case LibFunc_small_sprintf:
795   case LibFunc_sprintf:
796     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
797             FTy.getParamType(1)->isPointerTy() &&
798             FTy.getReturnType()->isIntegerTy(32));
799 
800   case LibFunc_sprintf_chk:
801     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
802            FTy.getParamType(1)->isIntegerTy(32) &&
803            IsSizeTTy(FTy.getParamType(2)) &&
804            FTy.getParamType(3)->isPointerTy() &&
805            FTy.getReturnType()->isIntegerTy(32);
806 
807   case LibFunc_snprintf:
808     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
809             FTy.getParamType(2)->isPointerTy() &&
810             FTy.getReturnType()->isIntegerTy(32));
811 
812   case LibFunc_snprintf_chk:
813     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
814            IsSizeTTy(FTy.getParamType(1)) &&
815            FTy.getParamType(2)->isIntegerTy(32) &&
816            IsSizeTTy(FTy.getParamType(3)) &&
817            FTy.getParamType(4)->isPointerTy() &&
818            FTy.getReturnType()->isIntegerTy(32);
819 
820   case LibFunc_setitimer:
821     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
822             FTy.getParamType(2)->isPointerTy());
823   case LibFunc_system:
824     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
825   case LibFunc_malloc:
826     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
827   case LibFunc_memcmp:
828     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
829             FTy.getParamType(0)->isPointerTy() &&
830             FTy.getParamType(1)->isPointerTy());
831 
832   case LibFunc_memchr:
833   case LibFunc_memrchr:
834     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
835             FTy.getReturnType() == FTy.getParamType(0) &&
836             FTy.getParamType(1)->isIntegerTy(32) &&
837             IsSizeTTy(FTy.getParamType(2)));
838   case LibFunc_modf:
839   case LibFunc_modff:
840   case LibFunc_modfl:
841     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
842 
843   case LibFunc_memcpy_chk:
844   case LibFunc_memmove_chk:
845     --NumParams;
846     if (!IsSizeTTy(FTy.getParamType(NumParams)))
847       return false;
848     LLVM_FALLTHROUGH;
849   case LibFunc_memcpy:
850   case LibFunc_mempcpy:
851   case LibFunc_memmove:
852     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
853             FTy.getParamType(0)->isPointerTy() &&
854             FTy.getParamType(1)->isPointerTy() &&
855             IsSizeTTy(FTy.getParamType(2)));
856 
857   case LibFunc_memset_chk:
858     --NumParams;
859     if (!IsSizeTTy(FTy.getParamType(NumParams)))
860       return false;
861     LLVM_FALLTHROUGH;
862   case LibFunc_memset:
863     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
864             FTy.getParamType(0)->isPointerTy() &&
865             FTy.getParamType(1)->isIntegerTy() &&
866             IsSizeTTy(FTy.getParamType(2)));
867 
868   case LibFunc_memccpy_chk:
869       --NumParams;
870     if (!IsSizeTTy(FTy.getParamType(NumParams)))
871       return false;
872     LLVM_FALLTHROUGH;
873   case LibFunc_memccpy:
874     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
875   case LibFunc_memalign:
876     return (FTy.getReturnType()->isPointerTy());
877   case LibFunc_realloc:
878   case LibFunc_reallocf:
879     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
880             FTy.getParamType(0) == FTy.getReturnType() &&
881             IsSizeTTy(FTy.getParamType(1)));
882   case LibFunc_read:
883     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
884   case LibFunc_rewind:
885   case LibFunc_rmdir:
886   case LibFunc_remove:
887   case LibFunc_realpath:
888     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
889   case LibFunc_rename:
890     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
891             FTy.getParamType(1)->isPointerTy());
892   case LibFunc_readlink:
893     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
894             FTy.getParamType(1)->isPointerTy());
895   case LibFunc_write:
896     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
897   case LibFunc_bcopy:
898   case LibFunc_bcmp:
899     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
900             FTy.getParamType(1)->isPointerTy());
901   case LibFunc_bzero:
902     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
903   case LibFunc_calloc:
904     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
905 
906   case LibFunc_atof:
907   case LibFunc_atoi:
908   case LibFunc_atol:
909   case LibFunc_atoll:
910   case LibFunc_ferror:
911   case LibFunc_getenv:
912   case LibFunc_getpwnam:
913   case LibFunc_iprintf:
914   case LibFunc_small_printf:
915   case LibFunc_pclose:
916   case LibFunc_perror:
917   case LibFunc_printf:
918   case LibFunc_puts:
919   case LibFunc_uname:
920   case LibFunc_under_IO_getc:
921   case LibFunc_unlink:
922   case LibFunc_unsetenv:
923     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
924 
925   case LibFunc_access:
926   case LibFunc_chmod:
927   case LibFunc_chown:
928   case LibFunc_clearerr:
929   case LibFunc_closedir:
930   case LibFunc_ctermid:
931   case LibFunc_fclose:
932   case LibFunc_feof:
933   case LibFunc_fflush:
934   case LibFunc_fgetc:
935   case LibFunc_fgetc_unlocked:
936   case LibFunc_fileno:
937   case LibFunc_flockfile:
938   case LibFunc_free:
939   case LibFunc_fseek:
940   case LibFunc_fseeko64:
941   case LibFunc_fseeko:
942   case LibFunc_fsetpos:
943   case LibFunc_ftell:
944   case LibFunc_ftello64:
945   case LibFunc_ftello:
946   case LibFunc_ftrylockfile:
947   case LibFunc_funlockfile:
948   case LibFunc_getc:
949   case LibFunc_getc_unlocked:
950   case LibFunc_getlogin_r:
951   case LibFunc_mkdir:
952   case LibFunc_mktime:
953   case LibFunc_times:
954     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
955 
956   case LibFunc_fopen:
957     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
958             FTy.getParamType(0)->isPointerTy() &&
959             FTy.getParamType(1)->isPointerTy());
960   case LibFunc_fork:
961     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
962   case LibFunc_fdopen:
963     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
964             FTy.getParamType(1)->isPointerTy());
965   case LibFunc_fputc:
966   case LibFunc_fputc_unlocked:
967   case LibFunc_fstat:
968   case LibFunc_frexp:
969   case LibFunc_frexpf:
970   case LibFunc_frexpl:
971   case LibFunc_fstatvfs:
972     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
973   case LibFunc_fgets:
974   case LibFunc_fgets_unlocked:
975     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
976             FTy.getParamType(2)->isPointerTy());
977   case LibFunc_fread:
978   case LibFunc_fread_unlocked:
979     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
980             FTy.getParamType(3)->isPointerTy());
981   case LibFunc_fwrite:
982   case LibFunc_fwrite_unlocked:
983     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
984             FTy.getParamType(0)->isPointerTy() &&
985             FTy.getParamType(1)->isIntegerTy() &&
986             FTy.getParamType(2)->isIntegerTy() &&
987             FTy.getParamType(3)->isPointerTy());
988   case LibFunc_fputs:
989   case LibFunc_fputs_unlocked:
990     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
991             FTy.getParamType(1)->isPointerTy());
992   case LibFunc_fscanf:
993   case LibFunc_fiprintf:
994   case LibFunc_small_fprintf:
995   case LibFunc_fprintf:
996     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
997             FTy.getParamType(0)->isPointerTy() &&
998             FTy.getParamType(1)->isPointerTy());
999   case LibFunc_fgetpos:
1000     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1001             FTy.getParamType(1)->isPointerTy());
1002   case LibFunc_getchar:
1003   case LibFunc_getchar_unlocked:
1004     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1005   case LibFunc_gets:
1006     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1007   case LibFunc_getitimer:
1008     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1009   case LibFunc_ungetc:
1010     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1011   case LibFunc_utime:
1012   case LibFunc_utimes:
1013     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1014             FTy.getParamType(1)->isPointerTy());
1015   case LibFunc_putc:
1016   case LibFunc_putc_unlocked:
1017     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1018   case LibFunc_pread:
1019   case LibFunc_pwrite:
1020     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1021   case LibFunc_popen:
1022     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1023             FTy.getParamType(0)->isPointerTy() &&
1024             FTy.getParamType(1)->isPointerTy());
1025   case LibFunc_vscanf:
1026     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1027   case LibFunc_vsscanf:
1028     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1029             FTy.getParamType(2)->isPointerTy());
1030   case LibFunc_vfscanf:
1031     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1032             FTy.getParamType(2)->isPointerTy());
1033   case LibFunc_valloc:
1034     return (FTy.getReturnType()->isPointerTy());
1035   case LibFunc_vprintf:
1036     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1037   case LibFunc_vfprintf:
1038   case LibFunc_vsprintf:
1039     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1040             FTy.getParamType(1)->isPointerTy());
1041   case LibFunc_vsprintf_chk:
1042     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1043            FTy.getParamType(1)->isIntegerTy(32) &&
1044            IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1045   case LibFunc_vsnprintf:
1046     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1047             FTy.getParamType(2)->isPointerTy());
1048   case LibFunc_vsnprintf_chk:
1049     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1050            FTy.getParamType(2)->isIntegerTy(32) &&
1051            IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1052   case LibFunc_open:
1053     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1054   case LibFunc_opendir:
1055     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1056             FTy.getParamType(0)->isPointerTy());
1057   case LibFunc_tmpfile:
1058     return (FTy.getReturnType()->isPointerTy());
1059   case LibFunc_htonl:
1060   case LibFunc_ntohl:
1061     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1062             FTy.getReturnType() == FTy.getParamType(0));
1063   case LibFunc_htons:
1064   case LibFunc_ntohs:
1065     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1066             FTy.getReturnType() == FTy.getParamType(0));
1067   case LibFunc_lstat:
1068     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1069             FTy.getParamType(1)->isPointerTy());
1070   case LibFunc_lchown:
1071     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1072   case LibFunc_qsort:
1073     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1074   case LibFunc_dunder_strdup:
1075   case LibFunc_dunder_strndup:
1076     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1077             FTy.getParamType(0)->isPointerTy());
1078   case LibFunc_dunder_strtok_r:
1079     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1080   case LibFunc_under_IO_putc:
1081     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1082   case LibFunc_dunder_isoc99_scanf:
1083     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1084   case LibFunc_stat64:
1085   case LibFunc_lstat64:
1086   case LibFunc_statvfs64:
1087     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1088             FTy.getParamType(1)->isPointerTy());
1089   case LibFunc_dunder_isoc99_sscanf:
1090     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1091             FTy.getParamType(1)->isPointerTy());
1092   case LibFunc_fopen64:
1093     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1094             FTy.getParamType(0)->isPointerTy() &&
1095             FTy.getParamType(1)->isPointerTy());
1096   case LibFunc_tmpfile64:
1097     return (FTy.getReturnType()->isPointerTy());
1098   case LibFunc_fstat64:
1099   case LibFunc_fstatvfs64:
1100     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1101   case LibFunc_open64:
1102     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1103   case LibFunc_gettimeofday:
1104     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1105             FTy.getParamType(1)->isPointerTy());
1106 
1107   // new(unsigned int);
1108   case LibFunc_Znwj:
1109   // new(unsigned long);
1110   case LibFunc_Znwm:
1111   // new[](unsigned int);
1112   case LibFunc_Znaj:
1113   // new[](unsigned long);
1114   case LibFunc_Znam:
1115   // new(unsigned int);
1116   case LibFunc_msvc_new_int:
1117   // new(unsigned long long);
1118   case LibFunc_msvc_new_longlong:
1119   // new[](unsigned int);
1120   case LibFunc_msvc_new_array_int:
1121   // new[](unsigned long long);
1122   case LibFunc_msvc_new_array_longlong:
1123     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1124 
1125   // new(unsigned int, nothrow);
1126   case LibFunc_ZnwjRKSt9nothrow_t:
1127   // new(unsigned long, nothrow);
1128   case LibFunc_ZnwmRKSt9nothrow_t:
1129   // new[](unsigned int, nothrow);
1130   case LibFunc_ZnajRKSt9nothrow_t:
1131   // new[](unsigned long, nothrow);
1132   case LibFunc_ZnamRKSt9nothrow_t:
1133   // new(unsigned int, nothrow);
1134   case LibFunc_msvc_new_int_nothrow:
1135   // new(unsigned long long, nothrow);
1136   case LibFunc_msvc_new_longlong_nothrow:
1137   // new[](unsigned int, nothrow);
1138   case LibFunc_msvc_new_array_int_nothrow:
1139   // new[](unsigned long long, nothrow);
1140   case LibFunc_msvc_new_array_longlong_nothrow:
1141   // new(unsigned int, align_val_t)
1142   case LibFunc_ZnwjSt11align_val_t:
1143   // new(unsigned long, align_val_t)
1144   case LibFunc_ZnwmSt11align_val_t:
1145   // new[](unsigned int, align_val_t)
1146   case LibFunc_ZnajSt11align_val_t:
1147   // new[](unsigned long, align_val_t)
1148   case LibFunc_ZnamSt11align_val_t:
1149     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1150 
1151   // new(unsigned int, align_val_t, nothrow)
1152   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1153   // new(unsigned long, align_val_t, nothrow)
1154   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1155   // new[](unsigned int, align_val_t, nothrow)
1156   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1157   // new[](unsigned long, align_val_t, nothrow)
1158   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1159     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1160 
1161   // void operator delete[](void*);
1162   case LibFunc_ZdaPv:
1163   // void operator delete(void*);
1164   case LibFunc_ZdlPv:
1165   // void operator delete[](void*);
1166   case LibFunc_msvc_delete_array_ptr32:
1167   // void operator delete[](void*);
1168   case LibFunc_msvc_delete_array_ptr64:
1169   // void operator delete(void*);
1170   case LibFunc_msvc_delete_ptr32:
1171   // void operator delete(void*);
1172   case LibFunc_msvc_delete_ptr64:
1173     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1174 
1175   // void operator delete[](void*, nothrow);
1176   case LibFunc_ZdaPvRKSt9nothrow_t:
1177   // void operator delete[](void*, unsigned int);
1178   case LibFunc_ZdaPvj:
1179   // void operator delete[](void*, unsigned long);
1180   case LibFunc_ZdaPvm:
1181   // void operator delete(void*, nothrow);
1182   case LibFunc_ZdlPvRKSt9nothrow_t:
1183   // void operator delete(void*, unsigned int);
1184   case LibFunc_ZdlPvj:
1185   // void operator delete(void*, unsigned long);
1186   case LibFunc_ZdlPvm:
1187   // void operator delete(void*, align_val_t)
1188   case LibFunc_ZdlPvSt11align_val_t:
1189   // void operator delete[](void*, align_val_t)
1190   case LibFunc_ZdaPvSt11align_val_t:
1191   // void operator delete[](void*, unsigned int);
1192   case LibFunc_msvc_delete_array_ptr32_int:
1193   // void operator delete[](void*, nothrow);
1194   case LibFunc_msvc_delete_array_ptr32_nothrow:
1195   // void operator delete[](void*, unsigned long long);
1196   case LibFunc_msvc_delete_array_ptr64_longlong:
1197   // void operator delete[](void*, nothrow);
1198   case LibFunc_msvc_delete_array_ptr64_nothrow:
1199   // void operator delete(void*, unsigned int);
1200   case LibFunc_msvc_delete_ptr32_int:
1201   // void operator delete(void*, nothrow);
1202   case LibFunc_msvc_delete_ptr32_nothrow:
1203   // void operator delete(void*, unsigned long long);
1204   case LibFunc_msvc_delete_ptr64_longlong:
1205   // void operator delete(void*, nothrow);
1206   case LibFunc_msvc_delete_ptr64_nothrow:
1207     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1208 
1209   // void operator delete(void*, align_val_t, nothrow)
1210   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1211   // void operator delete[](void*, align_val_t, nothrow)
1212   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1213     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1214 
1215   case LibFunc_memset_pattern16:
1216     return (!FTy.isVarArg() && NumParams == 3 &&
1217             FTy.getParamType(0)->isPointerTy() &&
1218             FTy.getParamType(1)->isPointerTy() &&
1219             FTy.getParamType(2)->isIntegerTy());
1220 
1221   case LibFunc_cxa_guard_abort:
1222   case LibFunc_cxa_guard_acquire:
1223   case LibFunc_cxa_guard_release:
1224   case LibFunc_nvvm_reflect:
1225     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1226 
1227   case LibFunc_sincospi_stret:
1228   case LibFunc_sincospif_stret:
1229     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1230 
1231   case LibFunc_acos:
1232   case LibFunc_acos_finite:
1233   case LibFunc_acosf:
1234   case LibFunc_acosf_finite:
1235   case LibFunc_acosh:
1236   case LibFunc_acosh_finite:
1237   case LibFunc_acoshf:
1238   case LibFunc_acoshf_finite:
1239   case LibFunc_acoshl:
1240   case LibFunc_acoshl_finite:
1241   case LibFunc_acosl:
1242   case LibFunc_acosl_finite:
1243   case LibFunc_asin:
1244   case LibFunc_asin_finite:
1245   case LibFunc_asinf:
1246   case LibFunc_asinf_finite:
1247   case LibFunc_asinh:
1248   case LibFunc_asinhf:
1249   case LibFunc_asinhl:
1250   case LibFunc_asinl:
1251   case LibFunc_asinl_finite:
1252   case LibFunc_atan:
1253   case LibFunc_atanf:
1254   case LibFunc_atanh:
1255   case LibFunc_atanh_finite:
1256   case LibFunc_atanhf:
1257   case LibFunc_atanhf_finite:
1258   case LibFunc_atanhl:
1259   case LibFunc_atanhl_finite:
1260   case LibFunc_atanl:
1261   case LibFunc_cbrt:
1262   case LibFunc_cbrtf:
1263   case LibFunc_cbrtl:
1264   case LibFunc_ceil:
1265   case LibFunc_ceilf:
1266   case LibFunc_ceill:
1267   case LibFunc_cos:
1268   case LibFunc_cosf:
1269   case LibFunc_cosh:
1270   case LibFunc_cosh_finite:
1271   case LibFunc_coshf:
1272   case LibFunc_coshf_finite:
1273   case LibFunc_coshl:
1274   case LibFunc_coshl_finite:
1275   case LibFunc_cosl:
1276   case LibFunc_exp10:
1277   case LibFunc_exp10_finite:
1278   case LibFunc_exp10f:
1279   case LibFunc_exp10f_finite:
1280   case LibFunc_exp10l:
1281   case LibFunc_exp10l_finite:
1282   case LibFunc_exp2:
1283   case LibFunc_exp2_finite:
1284   case LibFunc_exp2f:
1285   case LibFunc_exp2f_finite:
1286   case LibFunc_exp2l:
1287   case LibFunc_exp2l_finite:
1288   case LibFunc_exp:
1289   case LibFunc_exp_finite:
1290   case LibFunc_expf:
1291   case LibFunc_expf_finite:
1292   case LibFunc_expl:
1293   case LibFunc_expl_finite:
1294   case LibFunc_expm1:
1295   case LibFunc_expm1f:
1296   case LibFunc_expm1l:
1297   case LibFunc_fabs:
1298   case LibFunc_fabsf:
1299   case LibFunc_fabsl:
1300   case LibFunc_floor:
1301   case LibFunc_floorf:
1302   case LibFunc_floorl:
1303   case LibFunc_log10:
1304   case LibFunc_log10_finite:
1305   case LibFunc_log10f:
1306   case LibFunc_log10f_finite:
1307   case LibFunc_log10l:
1308   case LibFunc_log10l_finite:
1309   case LibFunc_log1p:
1310   case LibFunc_log1pf:
1311   case LibFunc_log1pl:
1312   case LibFunc_log2:
1313   case LibFunc_log2_finite:
1314   case LibFunc_log2f:
1315   case LibFunc_log2f_finite:
1316   case LibFunc_log2l:
1317   case LibFunc_log2l_finite:
1318   case LibFunc_log:
1319   case LibFunc_log_finite:
1320   case LibFunc_logb:
1321   case LibFunc_logbf:
1322   case LibFunc_logbl:
1323   case LibFunc_logf:
1324   case LibFunc_logf_finite:
1325   case LibFunc_logl:
1326   case LibFunc_logl_finite:
1327   case LibFunc_nearbyint:
1328   case LibFunc_nearbyintf:
1329   case LibFunc_nearbyintl:
1330   case LibFunc_rint:
1331   case LibFunc_rintf:
1332   case LibFunc_rintl:
1333   case LibFunc_round:
1334   case LibFunc_roundf:
1335   case LibFunc_roundl:
1336   case LibFunc_sin:
1337   case LibFunc_sinf:
1338   case LibFunc_sinh:
1339   case LibFunc_sinh_finite:
1340   case LibFunc_sinhf:
1341   case LibFunc_sinhf_finite:
1342   case LibFunc_sinhl:
1343   case LibFunc_sinhl_finite:
1344   case LibFunc_sinl:
1345   case LibFunc_sqrt:
1346   case LibFunc_sqrt_finite:
1347   case LibFunc_sqrtf:
1348   case LibFunc_sqrtf_finite:
1349   case LibFunc_sqrtl:
1350   case LibFunc_sqrtl_finite:
1351   case LibFunc_tan:
1352   case LibFunc_tanf:
1353   case LibFunc_tanh:
1354   case LibFunc_tanhf:
1355   case LibFunc_tanhl:
1356   case LibFunc_tanl:
1357   case LibFunc_trunc:
1358   case LibFunc_truncf:
1359   case LibFunc_truncl:
1360     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1361             FTy.getReturnType() == FTy.getParamType(0));
1362 
1363   case LibFunc_atan2:
1364   case LibFunc_atan2_finite:
1365   case LibFunc_atan2f:
1366   case LibFunc_atan2f_finite:
1367   case LibFunc_atan2l:
1368   case LibFunc_atan2l_finite:
1369   case LibFunc_fmin:
1370   case LibFunc_fminf:
1371   case LibFunc_fminl:
1372   case LibFunc_fmax:
1373   case LibFunc_fmaxf:
1374   case LibFunc_fmaxl:
1375   case LibFunc_fmod:
1376   case LibFunc_fmodf:
1377   case LibFunc_fmodl:
1378   case LibFunc_copysign:
1379   case LibFunc_copysignf:
1380   case LibFunc_copysignl:
1381   case LibFunc_pow:
1382   case LibFunc_pow_finite:
1383   case LibFunc_powf:
1384   case LibFunc_powf_finite:
1385   case LibFunc_powl:
1386   case LibFunc_powl_finite:
1387     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1388             FTy.getReturnType() == FTy.getParamType(0) &&
1389             FTy.getReturnType() == FTy.getParamType(1));
1390 
1391   case LibFunc_ldexp:
1392   case LibFunc_ldexpf:
1393   case LibFunc_ldexpl:
1394     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1395             FTy.getReturnType() == FTy.getParamType(0) &&
1396             FTy.getParamType(1)->isIntegerTy(32));
1397 
1398   case LibFunc_ffs:
1399   case LibFunc_ffsl:
1400   case LibFunc_ffsll:
1401   case LibFunc_fls:
1402   case LibFunc_flsl:
1403   case LibFunc_flsll:
1404     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1405             FTy.getParamType(0)->isIntegerTy());
1406 
1407   case LibFunc_isdigit:
1408   case LibFunc_isascii:
1409   case LibFunc_toascii:
1410   case LibFunc_putchar:
1411   case LibFunc_putchar_unlocked:
1412     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1413             FTy.getReturnType() == FTy.getParamType(0));
1414 
1415   case LibFunc_abs:
1416   case LibFunc_labs:
1417   case LibFunc_llabs:
1418     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1419             FTy.getReturnType() == FTy.getParamType(0));
1420 
1421   case LibFunc_cxa_atexit:
1422     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1423             FTy.getParamType(0)->isPointerTy() &&
1424             FTy.getParamType(1)->isPointerTy() &&
1425             FTy.getParamType(2)->isPointerTy());
1426 
1427   case LibFunc_sinpi:
1428   case LibFunc_cospi:
1429     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1430             FTy.getReturnType() == FTy.getParamType(0));
1431 
1432   case LibFunc_sinpif:
1433   case LibFunc_cospif:
1434     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1435             FTy.getReturnType() == FTy.getParamType(0));
1436 
1437   case LibFunc_strnlen:
1438     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1439             FTy.getParamType(0) == PCharTy &&
1440             FTy.getParamType(1) == SizeTTy);
1441 
1442   case LibFunc_posix_memalign:
1443     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1444             FTy.getParamType(0)->isPointerTy() &&
1445             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1446 
1447   case LibFunc_wcslen:
1448     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1449             FTy.getReturnType()->isIntegerTy());
1450 
1451   case LibFunc_cabs:
1452   case LibFunc_cabsf:
1453   case LibFunc_cabsl: {
1454     Type* RetTy = FTy.getReturnType();
1455     if (!RetTy->isFloatingPointTy())
1456       return false;
1457 
1458     // NOTE: These prototypes are target specific and currently support
1459     // "complex" passed as an array or discrete real & imaginary parameters.
1460     // Add other calling conventions to enable libcall optimizations.
1461     if (NumParams == 1)
1462       return (FTy.getParamType(0)->isArrayTy() &&
1463               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1464               FTy.getParamType(0)->getArrayElementType() == RetTy);
1465     else if (NumParams == 2)
1466       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1467     else
1468       return false;
1469   }
1470   case LibFunc::NumLibFuncs:
1471   case LibFunc::NotLibFunc:
1472     break;
1473   }
1474 
1475   llvm_unreachable("Invalid libfunc");
1476 }
1477 
1478 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1479                                        LibFunc &F) const {
1480   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1481   // intrinsics, this ends up being an interesting compile time win since we
1482   // avoid string normalization and comparison.
1483   if (FDecl.isIntrinsic()) return false;
1484 
1485   const DataLayout *DL =
1486       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1487   return getLibFunc(FDecl.getName(), F) &&
1488          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1489 }
1490 
1491 void TargetLibraryInfoImpl::disableAllFunctions() {
1492   memset(AvailableArray, 0, sizeof(AvailableArray));
1493 }
1494 
1495 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1496   return LHS.ScalarFnName < RHS.ScalarFnName;
1497 }
1498 
1499 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1500   return LHS.VectorFnName < RHS.VectorFnName;
1501 }
1502 
1503 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1504   return LHS.ScalarFnName < S;
1505 }
1506 
1507 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1508   return LHS.VectorFnName < S;
1509 }
1510 
1511 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1512   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1513   llvm::sort(VectorDescs, compareByScalarFnName);
1514 
1515   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1516   llvm::sort(ScalarDescs, compareByVectorFnName);
1517 }
1518 
1519 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1520     enum VectorLibrary VecLib) {
1521   switch (VecLib) {
1522   case Accelerate: {
1523     const VecDesc VecFuncs[] = {
1524     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1525     #include "llvm/Analysis/VecFuncs.def"
1526     };
1527     addVectorizableFunctions(VecFuncs);
1528     break;
1529   }
1530   case MASSV: {
1531     const VecDesc VecFuncs[] = {
1532     #define TLI_DEFINE_MASSV_VECFUNCS
1533     #include "llvm/Analysis/VecFuncs.def"
1534     };
1535     addVectorizableFunctions(VecFuncs);
1536     break;
1537   }
1538   case SVML: {
1539     const VecDesc VecFuncs[] = {
1540     #define TLI_DEFINE_SVML_VECFUNCS
1541     #include "llvm/Analysis/VecFuncs.def"
1542     };
1543     addVectorizableFunctions(VecFuncs);
1544     break;
1545   }
1546   case NoLibrary:
1547     break;
1548   }
1549 }
1550 
1551 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1552   funcName = sanitizeFunctionName(funcName);
1553   if (funcName.empty())
1554     return false;
1555 
1556   std::vector<VecDesc>::const_iterator I =
1557       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1558   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1559 }
1560 
1561 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1562                                                        unsigned VF) const {
1563   F = sanitizeFunctionName(F);
1564   if (F.empty())
1565     return F;
1566   std::vector<VecDesc>::const_iterator I =
1567       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1568   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1569     if (I->VectorizationFactor == VF)
1570       return I->VectorFnName;
1571     ++I;
1572   }
1573   return StringRef();
1574 }
1575 
1576 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1577                                                        unsigned &VF) const {
1578   F = sanitizeFunctionName(F);
1579   if (F.empty())
1580     return F;
1581 
1582   std::vector<VecDesc>::const_iterator I =
1583       llvm::lower_bound(ScalarDescs, F, compareWithVectorFnName);
1584   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1585     return StringRef();
1586   VF = I->VectorizationFactor;
1587   return I->ScalarFnName;
1588 }
1589 
1590 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1591                                              FunctionAnalysisManager &) {
1592   if (PresetInfoImpl)
1593     return TargetLibraryInfo(*PresetInfoImpl);
1594 
1595   return TargetLibraryInfo(
1596       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1597 }
1598 
1599 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1600   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1601       Impls[T.normalize()];
1602   if (!Impl)
1603     Impl.reset(new TargetLibraryInfoImpl(T));
1604 
1605   return *Impl;
1606 }
1607 
1608 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1609   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1610       M.getModuleFlag("wchar_size")))
1611     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1612   return 0;
1613 }
1614 
1615 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1616     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1617   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1618 }
1619 
1620 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1621     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1622   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1623 }
1624 
1625 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1626     const TargetLibraryInfoImpl &TLIImpl)
1627     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1628   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1629 }
1630 
1631 AnalysisKey TargetLibraryAnalysis::Key;
1632 
1633 // Register the basic pass.
1634 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1635                 "Target Library Information", false, true)
1636 char TargetLibraryInfoWrapperPass::ID = 0;
1637 
1638 void TargetLibraryInfoWrapperPass::anchor() {}
1639