xref: /freebsd/contrib/llvm-project/llvm/lib/Analysis/TargetLibraryInfo.cpp (revision da759cfa320d5076b075d15ff3f00ab3ba5634fd) 
1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the TargetLibraryInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/Analysis/TargetLibraryInfo.h"
14 #include "llvm/ADT/Triple.h"
15 #include "llvm/IR/Constants.h"
16 #include "llvm/InitializePasses.h"
17 #include "llvm/Support/CommandLine.h"
18 using namespace llvm;
19 
20 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
21     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
22     cl::init(TargetLibraryInfoImpl::NoLibrary),
23     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
24                           "No vector functions library"),
25                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
26                           "Accelerate framework"),
27                clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
28                           "IBM MASS vector library"),
29                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
30                           "Intel SVML library")));
31 
32 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
33     {
34 #define TLI_DEFINE_STRING
35 #include "llvm/Analysis/TargetLibraryInfo.def"
36 };
37 
38 static bool hasSinCosPiStret(const Triple &T) {
39   // Only Darwin variants have _stret versions of combined trig functions.
40   if (!T.isOSDarwin())
41     return false;
42 
43   // The ABI is rather complicated on x86, so don't do anything special there.
44   if (T.getArch() == Triple::x86)
45     return false;
46 
47   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
48     return false;
49 
50   if (T.isiOS() && T.isOSVersionLT(7, 0))
51     return false;
52 
53   return true;
54 }
55 
56 static bool hasBcmp(const Triple &TT) {
57   // Posix removed support from bcmp() in 2001, but the glibc and several
58   // implementations of the libc still have it.
59   if (TT.isOSLinux())
60     return TT.isGNUEnvironment() || TT.isMusl();
61   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
62   // not have it.
63   return TT.isOSFreeBSD() || TT.isOSSolaris();
64 }
65 
66 /// Initialize the set of available library functions based on the specified
67 /// target triple. This should be carefully written so that a missing target
68 /// triple gets a sane set of defaults.
69 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
70                        ArrayRef<StringLiteral> StandardNames) {
71   // Verify that the StandardNames array is in alphabetical order.
72   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
73                         [](StringRef LHS, StringRef RHS) {
74                           return LHS < RHS;
75                         }) &&
76          "TargetLibraryInfoImpl function names must be sorted");
77 
78   // Set IO unlocked variants as unavailable
79   // Set them as available per system below
80   TLI.setUnavailable(LibFunc_getchar_unlocked);
81   TLI.setUnavailable(LibFunc_putc_unlocked);
82   TLI.setUnavailable(LibFunc_putchar_unlocked);
83   TLI.setUnavailable(LibFunc_fputc_unlocked);
84   TLI.setUnavailable(LibFunc_fgetc_unlocked);
85   TLI.setUnavailable(LibFunc_fread_unlocked);
86   TLI.setUnavailable(LibFunc_fwrite_unlocked);
87   TLI.setUnavailable(LibFunc_fputs_unlocked);
88   TLI.setUnavailable(LibFunc_fgets_unlocked);
89 
90   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
91        ShouldSignExtI32Param = false;
92   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
93   // returns corresponding to C-level ints and unsigned ints.
94   if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
95       T.getArch() == Triple::systemz) {
96     ShouldExtI32Param = true;
97     ShouldExtI32Return = true;
98   }
99   // Mips, on the other hand, needs signext on i32 parameters corresponding
100   // to both signed and unsigned ints.
101   if (T.isMIPS()) {
102     ShouldSignExtI32Param = true;
103   }
104   TLI.setShouldExtI32Param(ShouldExtI32Param);
105   TLI.setShouldExtI32Return(ShouldExtI32Return);
106   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
107 
108   if (T.getArch() == Triple::r600 ||
109       T.getArch() == Triple::amdgcn)
110     TLI.disableAllFunctions();
111 
112   // There are no library implementations of memcpy and memset for AMD gpus and
113   // these can be difficult to lower in the backend.
114   if (T.getArch() == Triple::r600 ||
115       T.getArch() == Triple::amdgcn) {
116     TLI.setUnavailable(LibFunc_memcpy);
117     TLI.setUnavailable(LibFunc_memset);
118     TLI.setUnavailable(LibFunc_memset_pattern16);
119     return;
120   }
121 
122   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
123   // All versions of watchOS support it.
124   if (T.isMacOSX()) {
125     // available IO unlocked variants on Mac OS X
126     TLI.setAvailable(LibFunc_getc_unlocked);
127     TLI.setAvailable(LibFunc_getchar_unlocked);
128     TLI.setAvailable(LibFunc_putc_unlocked);
129     TLI.setAvailable(LibFunc_putchar_unlocked);
130 
131     if (T.isMacOSXVersionLT(10, 5))
132       TLI.setUnavailable(LibFunc_memset_pattern16);
133   } else if (T.isiOS()) {
134     if (T.isOSVersionLT(3, 0))
135       TLI.setUnavailable(LibFunc_memset_pattern16);
136   } else if (!T.isWatchOS()) {
137     TLI.setUnavailable(LibFunc_memset_pattern16);
138   }
139 
140   if (!hasSinCosPiStret(T)) {
141     TLI.setUnavailable(LibFunc_sinpi);
142     TLI.setUnavailable(LibFunc_sinpif);
143     TLI.setUnavailable(LibFunc_cospi);
144     TLI.setUnavailable(LibFunc_cospif);
145     TLI.setUnavailable(LibFunc_sincospi_stret);
146     TLI.setUnavailable(LibFunc_sincospif_stret);
147   }
148 
149   if (!hasBcmp(T))
150     TLI.setUnavailable(LibFunc_bcmp);
151 
152   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
153       !T.isMacOSXVersionLT(10, 7)) {
154     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
155     // we don't care about) have two versions; on recent OSX, the one we want
156     // has a $UNIX2003 suffix. The two implementations are identical except
157     // for the return value in some edge cases.  However, we don't want to
158     // generate code that depends on the old symbols.
159     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
160     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
161   }
162 
163   // iprintf and friends are only available on XCore, TCE, and Emscripten.
164   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
165       T.getOS() != Triple::Emscripten) {
166     TLI.setUnavailable(LibFunc_iprintf);
167     TLI.setUnavailable(LibFunc_siprintf);
168     TLI.setUnavailable(LibFunc_fiprintf);
169   }
170 
171   // __small_printf and friends are only available on Emscripten.
172   if (T.getOS() != Triple::Emscripten) {
173     TLI.setUnavailable(LibFunc_small_printf);
174     TLI.setUnavailable(LibFunc_small_sprintf);
175     TLI.setUnavailable(LibFunc_small_fprintf);
176   }
177 
178   if (T.isOSWindows() && !T.isOSCygMing()) {
179     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
180     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
181     // XXX: In order to use an MSVCRT older than VC19,
182     // the specific library version must be explicit in the target triple,
183     // e.g., x86_64-pc-windows-msvc18.
184     bool hasPartialC99 = true;
185     if (T.isKnownWindowsMSVCEnvironment()) {
186       unsigned Major, Minor, Micro;
187       T.getEnvironmentVersion(Major, Minor, Micro);
188       hasPartialC99 = (Major == 0 || Major >= 19);
189     }
190 
191     // Latest targets support C89 math functions, in part.
192     bool isARM = (T.getArch() == Triple::aarch64 ||
193                   T.getArch() == Triple::arm);
194     bool hasPartialFloat = (isARM ||
195                             T.getArch() == Triple::x86_64);
196 
197     // Win32 does not support float C89 math functions, in general.
198     if (!hasPartialFloat) {
199       TLI.setUnavailable(LibFunc_acosf);
200       TLI.setUnavailable(LibFunc_asinf);
201       TLI.setUnavailable(LibFunc_atan2f);
202       TLI.setUnavailable(LibFunc_atanf);
203       TLI.setUnavailable(LibFunc_ceilf);
204       TLI.setUnavailable(LibFunc_cosf);
205       TLI.setUnavailable(LibFunc_coshf);
206       TLI.setUnavailable(LibFunc_expf);
207       TLI.setUnavailable(LibFunc_floorf);
208       TLI.setUnavailable(LibFunc_fmodf);
209       TLI.setUnavailable(LibFunc_log10f);
210       TLI.setUnavailable(LibFunc_logf);
211       TLI.setUnavailable(LibFunc_modff);
212       TLI.setUnavailable(LibFunc_powf);
213       TLI.setUnavailable(LibFunc_sinf);
214       TLI.setUnavailable(LibFunc_sinhf);
215       TLI.setUnavailable(LibFunc_sqrtf);
216       TLI.setUnavailable(LibFunc_tanf);
217       TLI.setUnavailable(LibFunc_tanhf);
218     }
219     if (!isARM)
220       TLI.setUnavailable(LibFunc_fabsf);
221     TLI.setUnavailable(LibFunc_frexpf);
222     TLI.setUnavailable(LibFunc_ldexpf);
223 
224     // Win32 does not support long double C89 math functions.
225     TLI.setUnavailable(LibFunc_acosl);
226     TLI.setUnavailable(LibFunc_asinl);
227     TLI.setUnavailable(LibFunc_atan2l);
228     TLI.setUnavailable(LibFunc_atanl);
229     TLI.setUnavailable(LibFunc_ceill);
230     TLI.setUnavailable(LibFunc_cosl);
231     TLI.setUnavailable(LibFunc_coshl);
232     TLI.setUnavailable(LibFunc_expl);
233     TLI.setUnavailable(LibFunc_fabsl);
234     TLI.setUnavailable(LibFunc_floorl);
235     TLI.setUnavailable(LibFunc_fmodl);
236     TLI.setUnavailable(LibFunc_frexpl);
237     TLI.setUnavailable(LibFunc_ldexpl);
238     TLI.setUnavailable(LibFunc_log10l);
239     TLI.setUnavailable(LibFunc_logl);
240     TLI.setUnavailable(LibFunc_modfl);
241     TLI.setUnavailable(LibFunc_powl);
242     TLI.setUnavailable(LibFunc_sinl);
243     TLI.setUnavailable(LibFunc_sinhl);
244     TLI.setUnavailable(LibFunc_sqrtl);
245     TLI.setUnavailable(LibFunc_tanl);
246     TLI.setUnavailable(LibFunc_tanhl);
247 
248     // Win32 does not fully support C99 math functions.
249     if (!hasPartialC99) {
250       TLI.setUnavailable(LibFunc_acosh);
251       TLI.setUnavailable(LibFunc_acoshf);
252       TLI.setUnavailable(LibFunc_asinh);
253       TLI.setUnavailable(LibFunc_asinhf);
254       TLI.setUnavailable(LibFunc_atanh);
255       TLI.setUnavailable(LibFunc_atanhf);
256       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
257       TLI.setUnavailable(LibFunc_cabsf);
258       TLI.setUnavailable(LibFunc_cbrt);
259       TLI.setUnavailable(LibFunc_cbrtf);
260       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
261       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
262       TLI.setUnavailable(LibFunc_exp2);
263       TLI.setUnavailable(LibFunc_exp2f);
264       TLI.setUnavailable(LibFunc_expm1);
265       TLI.setUnavailable(LibFunc_expm1f);
266       TLI.setUnavailable(LibFunc_fmax);
267       TLI.setUnavailable(LibFunc_fmaxf);
268       TLI.setUnavailable(LibFunc_fmin);
269       TLI.setUnavailable(LibFunc_fminf);
270       TLI.setUnavailable(LibFunc_log1p);
271       TLI.setUnavailable(LibFunc_log1pf);
272       TLI.setUnavailable(LibFunc_log2);
273       TLI.setUnavailable(LibFunc_log2f);
274       TLI.setAvailableWithName(LibFunc_logb, "_logb");
275       if (hasPartialFloat)
276         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
277       else
278         TLI.setUnavailable(LibFunc_logbf);
279       TLI.setUnavailable(LibFunc_rint);
280       TLI.setUnavailable(LibFunc_rintf);
281       TLI.setUnavailable(LibFunc_round);
282       TLI.setUnavailable(LibFunc_roundf);
283       TLI.setUnavailable(LibFunc_trunc);
284       TLI.setUnavailable(LibFunc_truncf);
285     }
286 
287     // Win32 does not support long double C99 math functions.
288     TLI.setUnavailable(LibFunc_acoshl);
289     TLI.setUnavailable(LibFunc_asinhl);
290     TLI.setUnavailable(LibFunc_atanhl);
291     TLI.setUnavailable(LibFunc_cabsl);
292     TLI.setUnavailable(LibFunc_cbrtl);
293     TLI.setUnavailable(LibFunc_copysignl);
294     TLI.setUnavailable(LibFunc_exp2l);
295     TLI.setUnavailable(LibFunc_expm1l);
296     TLI.setUnavailable(LibFunc_fmaxl);
297     TLI.setUnavailable(LibFunc_fminl);
298     TLI.setUnavailable(LibFunc_log1pl);
299     TLI.setUnavailable(LibFunc_log2l);
300     TLI.setUnavailable(LibFunc_logbl);
301     TLI.setUnavailable(LibFunc_nearbyintl);
302     TLI.setUnavailable(LibFunc_rintl);
303     TLI.setUnavailable(LibFunc_roundl);
304     TLI.setUnavailable(LibFunc_truncl);
305 
306     // Win32 does not support these functions, but
307     // they are generally available on POSIX-compliant systems.
308     TLI.setUnavailable(LibFunc_access);
309     TLI.setUnavailable(LibFunc_bcmp);
310     TLI.setUnavailable(LibFunc_bcopy);
311     TLI.setUnavailable(LibFunc_bzero);
312     TLI.setUnavailable(LibFunc_chmod);
313     TLI.setUnavailable(LibFunc_chown);
314     TLI.setUnavailable(LibFunc_closedir);
315     TLI.setUnavailable(LibFunc_ctermid);
316     TLI.setUnavailable(LibFunc_fdopen);
317     TLI.setUnavailable(LibFunc_ffs);
318     TLI.setUnavailable(LibFunc_fileno);
319     TLI.setUnavailable(LibFunc_flockfile);
320     TLI.setUnavailable(LibFunc_fseeko);
321     TLI.setUnavailable(LibFunc_fstat);
322     TLI.setUnavailable(LibFunc_fstatvfs);
323     TLI.setUnavailable(LibFunc_ftello);
324     TLI.setUnavailable(LibFunc_ftrylockfile);
325     TLI.setUnavailable(LibFunc_funlockfile);
326     TLI.setUnavailable(LibFunc_getitimer);
327     TLI.setUnavailable(LibFunc_getlogin_r);
328     TLI.setUnavailable(LibFunc_getpwnam);
329     TLI.setUnavailable(LibFunc_gettimeofday);
330     TLI.setUnavailable(LibFunc_htonl);
331     TLI.setUnavailable(LibFunc_htons);
332     TLI.setUnavailable(LibFunc_lchown);
333     TLI.setUnavailable(LibFunc_lstat);
334     TLI.setUnavailable(LibFunc_memccpy);
335     TLI.setUnavailable(LibFunc_mkdir);
336     TLI.setUnavailable(LibFunc_ntohl);
337     TLI.setUnavailable(LibFunc_ntohs);
338     TLI.setUnavailable(LibFunc_open);
339     TLI.setUnavailable(LibFunc_opendir);
340     TLI.setUnavailable(LibFunc_pclose);
341     TLI.setUnavailable(LibFunc_popen);
342     TLI.setUnavailable(LibFunc_pread);
343     TLI.setUnavailable(LibFunc_pwrite);
344     TLI.setUnavailable(LibFunc_read);
345     TLI.setUnavailable(LibFunc_readlink);
346     TLI.setUnavailable(LibFunc_realpath);
347     TLI.setUnavailable(LibFunc_rmdir);
348     TLI.setUnavailable(LibFunc_setitimer);
349     TLI.setUnavailable(LibFunc_stat);
350     TLI.setUnavailable(LibFunc_statvfs);
351     TLI.setUnavailable(LibFunc_stpcpy);
352     TLI.setUnavailable(LibFunc_stpncpy);
353     TLI.setUnavailable(LibFunc_strcasecmp);
354     TLI.setUnavailable(LibFunc_strncasecmp);
355     TLI.setUnavailable(LibFunc_times);
356     TLI.setUnavailable(LibFunc_uname);
357     TLI.setUnavailable(LibFunc_unlink);
358     TLI.setUnavailable(LibFunc_unsetenv);
359     TLI.setUnavailable(LibFunc_utime);
360     TLI.setUnavailable(LibFunc_utimes);
361     TLI.setUnavailable(LibFunc_write);
362   }
363 
364   switch (T.getOS()) {
365   case Triple::MacOSX:
366     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
367     // and their names are __exp10 and __exp10f. exp10l is not available on
368     // OS X or iOS.
369     TLI.setUnavailable(LibFunc_exp10l);
370     if (T.isMacOSXVersionLT(10, 9)) {
371       TLI.setUnavailable(LibFunc_exp10);
372       TLI.setUnavailable(LibFunc_exp10f);
373     } else {
374       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
375       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
376     }
377     break;
378   case Triple::IOS:
379   case Triple::TvOS:
380   case Triple::WatchOS:
381     TLI.setUnavailable(LibFunc_exp10l);
382     if (!T.isWatchOS() &&
383         (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
384       TLI.setUnavailable(LibFunc_exp10);
385       TLI.setUnavailable(LibFunc_exp10f);
386     } else {
387       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
388       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
389     }
390     break;
391   case Triple::Linux:
392     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
393     // buggy prior to glibc version 2.18. Until this version is widely deployed
394     // or we have a reasonable detection strategy, we cannot use exp10 reliably
395     // on Linux.
396     //
397     // Fall through to disable all of them.
398     LLVM_FALLTHROUGH;
399   default:
400     TLI.setUnavailable(LibFunc_exp10);
401     TLI.setUnavailable(LibFunc_exp10f);
402     TLI.setUnavailable(LibFunc_exp10l);
403   }
404 
405   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
406   // Linux (GLIBC):
407   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
408   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
409   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
410   switch (T.getOS()) {
411   case Triple::Darwin:
412   case Triple::MacOSX:
413   case Triple::IOS:
414   case Triple::TvOS:
415   case Triple::WatchOS:
416   case Triple::FreeBSD:
417   case Triple::Linux:
418     break;
419   default:
420     TLI.setUnavailable(LibFunc_ffsl);
421   }
422 
423   // ffsll is available on at least FreeBSD and Linux (GLIBC):
424   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
425   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
426   switch (T.getOS()) {
427   case Triple::Darwin:
428   case Triple::MacOSX:
429   case Triple::IOS:
430   case Triple::TvOS:
431   case Triple::WatchOS:
432   case Triple::FreeBSD:
433   case Triple::Linux:
434     break;
435   default:
436     TLI.setUnavailable(LibFunc_ffsll);
437   }
438 
439   // The following functions are available on at least FreeBSD:
440   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
441   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
442   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
443   if (!T.isOSFreeBSD()) {
444     TLI.setUnavailable(LibFunc_fls);
445     TLI.setUnavailable(LibFunc_flsl);
446     TLI.setUnavailable(LibFunc_flsll);
447   }
448 
449   // The following functions are only available on GNU/Linux (using glibc).
450   // Linux variants without glibc (eg: bionic, musl) may have some subset.
451   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
452     TLI.setUnavailable(LibFunc_dunder_strdup);
453     TLI.setUnavailable(LibFunc_dunder_strtok_r);
454     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
455     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
456     TLI.setUnavailable(LibFunc_under_IO_getc);
457     TLI.setUnavailable(LibFunc_under_IO_putc);
458     // But, Android and musl have memalign.
459     if (!T.isAndroid() && !T.isMusl())
460       TLI.setUnavailable(LibFunc_memalign);
461     TLI.setUnavailable(LibFunc_fopen64);
462     TLI.setUnavailable(LibFunc_fseeko64);
463     TLI.setUnavailable(LibFunc_fstat64);
464     TLI.setUnavailable(LibFunc_fstatvfs64);
465     TLI.setUnavailable(LibFunc_ftello64);
466     TLI.setUnavailable(LibFunc_lstat64);
467     TLI.setUnavailable(LibFunc_open64);
468     TLI.setUnavailable(LibFunc_stat64);
469     TLI.setUnavailable(LibFunc_statvfs64);
470     TLI.setUnavailable(LibFunc_tmpfile64);
471 
472     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
473     // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
474     // so we keep these functions around just so that they're recognized by
475     // the ConstantFolder.
476     TLI.setUnavailable(LibFunc_acos_finite);
477     TLI.setUnavailable(LibFunc_acosf_finite);
478     TLI.setUnavailable(LibFunc_acosl_finite);
479     TLI.setUnavailable(LibFunc_acosh_finite);
480     TLI.setUnavailable(LibFunc_acoshf_finite);
481     TLI.setUnavailable(LibFunc_acoshl_finite);
482     TLI.setUnavailable(LibFunc_asin_finite);
483     TLI.setUnavailable(LibFunc_asinf_finite);
484     TLI.setUnavailable(LibFunc_asinl_finite);
485     TLI.setUnavailable(LibFunc_atan2_finite);
486     TLI.setUnavailable(LibFunc_atan2f_finite);
487     TLI.setUnavailable(LibFunc_atan2l_finite);
488     TLI.setUnavailable(LibFunc_atanh_finite);
489     TLI.setUnavailable(LibFunc_atanhf_finite);
490     TLI.setUnavailable(LibFunc_atanhl_finite);
491     TLI.setUnavailable(LibFunc_cosh_finite);
492     TLI.setUnavailable(LibFunc_coshf_finite);
493     TLI.setUnavailable(LibFunc_coshl_finite);
494     TLI.setUnavailable(LibFunc_exp10_finite);
495     TLI.setUnavailable(LibFunc_exp10f_finite);
496     TLI.setUnavailable(LibFunc_exp10l_finite);
497     TLI.setUnavailable(LibFunc_exp2_finite);
498     TLI.setUnavailable(LibFunc_exp2f_finite);
499     TLI.setUnavailable(LibFunc_exp2l_finite);
500     TLI.setUnavailable(LibFunc_exp_finite);
501     TLI.setUnavailable(LibFunc_expf_finite);
502     TLI.setUnavailable(LibFunc_expl_finite);
503     TLI.setUnavailable(LibFunc_log10_finite);
504     TLI.setUnavailable(LibFunc_log10f_finite);
505     TLI.setUnavailable(LibFunc_log10l_finite);
506     TLI.setUnavailable(LibFunc_log2_finite);
507     TLI.setUnavailable(LibFunc_log2f_finite);
508     TLI.setUnavailable(LibFunc_log2l_finite);
509     TLI.setUnavailable(LibFunc_log_finite);
510     TLI.setUnavailable(LibFunc_logf_finite);
511     TLI.setUnavailable(LibFunc_logl_finite);
512     TLI.setUnavailable(LibFunc_pow_finite);
513     TLI.setUnavailable(LibFunc_powf_finite);
514     TLI.setUnavailable(LibFunc_powl_finite);
515     TLI.setUnavailable(LibFunc_sinh_finite);
516     TLI.setUnavailable(LibFunc_sinhf_finite);
517     TLI.setUnavailable(LibFunc_sinhl_finite);
518   }
519 
520   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
521       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
522     // available IO unlocked variants on GNU/Linux and Android P or later
523     TLI.setAvailable(LibFunc_getc_unlocked);
524     TLI.setAvailable(LibFunc_getchar_unlocked);
525     TLI.setAvailable(LibFunc_putc_unlocked);
526     TLI.setAvailable(LibFunc_putchar_unlocked);
527     TLI.setAvailable(LibFunc_fputc_unlocked);
528     TLI.setAvailable(LibFunc_fgetc_unlocked);
529     TLI.setAvailable(LibFunc_fread_unlocked);
530     TLI.setAvailable(LibFunc_fwrite_unlocked);
531     TLI.setAvailable(LibFunc_fputs_unlocked);
532     TLI.setAvailable(LibFunc_fgets_unlocked);
533   }
534 
535   // As currently implemented in clang, NVPTX code has no standard library to
536   // speak of.  Headers provide a standard-ish library implementation, but many
537   // of the signatures are wrong -- for example, many libm functions are not
538   // extern "C".
539   //
540   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
541   // but only used functions are provided to llvm.  Moreover, most of the
542   // functions in libdevice don't map precisely to standard library functions.
543   //
544   // FIXME: Having no standard library prevents e.g. many fastmath
545   // optimizations, so this situation should be fixed.
546   if (T.isNVPTX()) {
547     TLI.disableAllFunctions();
548     TLI.setAvailable(LibFunc_nvvm_reflect);
549   } else {
550     TLI.setUnavailable(LibFunc_nvvm_reflect);
551   }
552 
553   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
554 }
555 
556 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
557   // Default to everything being available.
558   memset(AvailableArray, -1, sizeof(AvailableArray));
559 
560   initialize(*this, Triple(), StandardNames);
561 }
562 
563 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
564   // Default to everything being available.
565   memset(AvailableArray, -1, sizeof(AvailableArray));
566 
567   initialize(*this, T, StandardNames);
568 }
569 
570 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
571     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
572       ShouldExtI32Return(TLI.ShouldExtI32Return),
573       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
574   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
575   VectorDescs = TLI.VectorDescs;
576   ScalarDescs = TLI.ScalarDescs;
577 }
578 
579 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
580     : CustomNames(std::move(TLI.CustomNames)),
581       ShouldExtI32Param(TLI.ShouldExtI32Param),
582       ShouldExtI32Return(TLI.ShouldExtI32Return),
583       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
584   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
585             AvailableArray);
586   VectorDescs = TLI.VectorDescs;
587   ScalarDescs = TLI.ScalarDescs;
588 }
589 
590 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
591   CustomNames = TLI.CustomNames;
592   ShouldExtI32Param = TLI.ShouldExtI32Param;
593   ShouldExtI32Return = TLI.ShouldExtI32Return;
594   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
595   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
596   return *this;
597 }
598 
599 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
600   CustomNames = std::move(TLI.CustomNames);
601   ShouldExtI32Param = TLI.ShouldExtI32Param;
602   ShouldExtI32Return = TLI.ShouldExtI32Return;
603   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
604   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
605             AvailableArray);
606   return *this;
607 }
608 
609 static StringRef sanitizeFunctionName(StringRef funcName) {
610   // Filter out empty names and names containing null bytes, those can't be in
611   // our table.
612   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
613     return StringRef();
614 
615   // Check for \01 prefix that is used to mangle __asm declarations and
616   // strip it if present.
617   return GlobalValue::dropLLVMManglingEscape(funcName);
618 }
619 
620 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
621   funcName = sanitizeFunctionName(funcName);
622   if (funcName.empty())
623     return false;
624 
625   const auto *Start = std::begin(StandardNames);
626   const auto *End = std::end(StandardNames);
627   const auto *I = std::lower_bound(Start, End, funcName);
628   if (I != End && *I == funcName) {
629     F = (LibFunc)(I - Start);
630     return true;
631   }
632   return false;
633 }
634 
635 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
636                                                    LibFunc F,
637                                                    const DataLayout *DL) const {
638   LLVMContext &Ctx = FTy.getContext();
639   Type *PCharTy = Type::getInt8PtrTy(Ctx);
640   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
641   auto IsSizeTTy = [SizeTTy](Type *Ty) {
642     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
643   };
644   unsigned NumParams = FTy.getNumParams();
645 
646   switch (F) {
647   case LibFunc_execl:
648   case LibFunc_execlp:
649   case LibFunc_execle:
650     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
651             FTy.getParamType(1)->isPointerTy() &&
652             FTy.getReturnType()->isIntegerTy(32));
653   case LibFunc_execv:
654   case LibFunc_execvp:
655     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
656             FTy.getParamType(1)->isPointerTy() &&
657             FTy.getReturnType()->isIntegerTy(32));
658   case LibFunc_execvP:
659   case LibFunc_execvpe:
660   case LibFunc_execve:
661     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
662             FTy.getParamType(1)->isPointerTy() &&
663             FTy.getParamType(2)->isPointerTy() &&
664             FTy.getReturnType()->isIntegerTy(32));
665   case LibFunc_strlen:
666     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
667             FTy.getReturnType()->isIntegerTy());
668 
669   case LibFunc_strchr:
670   case LibFunc_strrchr:
671     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
672             FTy.getParamType(0) == FTy.getReturnType() &&
673             FTy.getParamType(1)->isIntegerTy());
674 
675   case LibFunc_strtol:
676   case LibFunc_strtod:
677   case LibFunc_strtof:
678   case LibFunc_strtoul:
679   case LibFunc_strtoll:
680   case LibFunc_strtold:
681   case LibFunc_strtoull:
682     return ((NumParams == 2 || NumParams == 3) &&
683             FTy.getParamType(0)->isPointerTy() &&
684             FTy.getParamType(1)->isPointerTy());
685   case LibFunc_strcat_chk:
686     --NumParams;
687     if (!IsSizeTTy(FTy.getParamType(NumParams)))
688       return false;
689     LLVM_FALLTHROUGH;
690   case LibFunc_strcat:
691     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
692             FTy.getParamType(0) == FTy.getReturnType() &&
693             FTy.getParamType(1) == FTy.getReturnType());
694 
695   case LibFunc_strncat_chk:
696     --NumParams;
697     if (!IsSizeTTy(FTy.getParamType(NumParams)))
698       return false;
699     LLVM_FALLTHROUGH;
700   case LibFunc_strncat:
701     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
702             FTy.getParamType(0) == FTy.getReturnType() &&
703             FTy.getParamType(1) == FTy.getReturnType() &&
704             IsSizeTTy(FTy.getParamType(2)));
705 
706   case LibFunc_strcpy_chk:
707   case LibFunc_stpcpy_chk:
708     --NumParams;
709     if (!IsSizeTTy(FTy.getParamType(NumParams)))
710       return false;
711     LLVM_FALLTHROUGH;
712   case LibFunc_strcpy:
713   case LibFunc_stpcpy:
714     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
715             FTy.getParamType(0) == FTy.getParamType(1) &&
716             FTy.getParamType(0) == PCharTy);
717 
718   case LibFunc_strlcat_chk:
719   case LibFunc_strlcpy_chk:
720     --NumParams;
721     if (!IsSizeTTy(FTy.getParamType(NumParams)))
722       return false;
723     LLVM_FALLTHROUGH;
724   case LibFunc_strlcat:
725   case LibFunc_strlcpy:
726     return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
727            FTy.getParamType(0)->isPointerTy() &&
728            FTy.getParamType(1)->isPointerTy() &&
729            IsSizeTTy(FTy.getParamType(2));
730 
731   case LibFunc_strncpy_chk:
732   case LibFunc_stpncpy_chk:
733     --NumParams;
734     if (!IsSizeTTy(FTy.getParamType(NumParams)))
735       return false;
736     LLVM_FALLTHROUGH;
737   case LibFunc_strncpy:
738   case LibFunc_stpncpy:
739     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
740             FTy.getParamType(0) == FTy.getParamType(1) &&
741             FTy.getParamType(0) == PCharTy &&
742             IsSizeTTy(FTy.getParamType(2)));
743 
744   case LibFunc_strxfrm:
745     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
746             FTy.getParamType(1)->isPointerTy());
747 
748   case LibFunc_strcmp:
749     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
750             FTy.getParamType(0)->isPointerTy() &&
751             FTy.getParamType(0) == FTy.getParamType(1));
752 
753   case LibFunc_strncmp:
754     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
755             FTy.getParamType(0)->isPointerTy() &&
756             FTy.getParamType(0) == FTy.getParamType(1) &&
757             IsSizeTTy(FTy.getParamType(2)));
758 
759   case LibFunc_strspn:
760   case LibFunc_strcspn:
761     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
762             FTy.getParamType(0) == FTy.getParamType(1) &&
763             FTy.getReturnType()->isIntegerTy());
764 
765   case LibFunc_strcoll:
766   case LibFunc_strcasecmp:
767   case LibFunc_strncasecmp:
768     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
769             FTy.getParamType(1)->isPointerTy());
770 
771   case LibFunc_strstr:
772     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
773             FTy.getParamType(0)->isPointerTy() &&
774             FTy.getParamType(1)->isPointerTy());
775 
776   case LibFunc_strpbrk:
777     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
778             FTy.getReturnType() == FTy.getParamType(0) &&
779             FTy.getParamType(0) == FTy.getParamType(1));
780 
781   case LibFunc_strtok:
782   case LibFunc_strtok_r:
783     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
784   case LibFunc_scanf:
785   case LibFunc_setbuf:
786   case LibFunc_setvbuf:
787     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
788   case LibFunc_strdup:
789   case LibFunc_strndup:
790     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
791             FTy.getParamType(0)->isPointerTy());
792   case LibFunc_sscanf:
793   case LibFunc_stat:
794   case LibFunc_statvfs:
795   case LibFunc_siprintf:
796   case LibFunc_small_sprintf:
797   case LibFunc_sprintf:
798     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
799             FTy.getParamType(1)->isPointerTy() &&
800             FTy.getReturnType()->isIntegerTy(32));
801 
802   case LibFunc_sprintf_chk:
803     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
804            FTy.getParamType(1)->isIntegerTy(32) &&
805            IsSizeTTy(FTy.getParamType(2)) &&
806            FTy.getParamType(3)->isPointerTy() &&
807            FTy.getReturnType()->isIntegerTy(32);
808 
809   case LibFunc_snprintf:
810     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
811             FTy.getParamType(2)->isPointerTy() &&
812             FTy.getReturnType()->isIntegerTy(32));
813 
814   case LibFunc_snprintf_chk:
815     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
816            IsSizeTTy(FTy.getParamType(1)) &&
817            FTy.getParamType(2)->isIntegerTy(32) &&
818            IsSizeTTy(FTy.getParamType(3)) &&
819            FTy.getParamType(4)->isPointerTy() &&
820            FTy.getReturnType()->isIntegerTy(32);
821 
822   case LibFunc_setitimer:
823     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
824             FTy.getParamType(2)->isPointerTy());
825   case LibFunc_system:
826     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
827   case LibFunc_malloc:
828     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
829   case LibFunc_memcmp:
830     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
831             FTy.getParamType(0)->isPointerTy() &&
832             FTy.getParamType(1)->isPointerTy());
833 
834   case LibFunc_memchr:
835   case LibFunc_memrchr:
836     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
837             FTy.getReturnType() == FTy.getParamType(0) &&
838             FTy.getParamType(1)->isIntegerTy(32) &&
839             IsSizeTTy(FTy.getParamType(2)));
840   case LibFunc_modf:
841   case LibFunc_modff:
842   case LibFunc_modfl:
843     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
844 
845   case LibFunc_memcpy_chk:
846   case LibFunc_memmove_chk:
847     --NumParams;
848     if (!IsSizeTTy(FTy.getParamType(NumParams)))
849       return false;
850     LLVM_FALLTHROUGH;
851   case LibFunc_memcpy:
852   case LibFunc_mempcpy:
853   case LibFunc_memmove:
854     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
855             FTy.getParamType(0)->isPointerTy() &&
856             FTy.getParamType(1)->isPointerTy() &&
857             IsSizeTTy(FTy.getParamType(2)));
858 
859   case LibFunc_memset_chk:
860     --NumParams;
861     if (!IsSizeTTy(FTy.getParamType(NumParams)))
862       return false;
863     LLVM_FALLTHROUGH;
864   case LibFunc_memset:
865     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
866             FTy.getParamType(0)->isPointerTy() &&
867             FTy.getParamType(1)->isIntegerTy() &&
868             IsSizeTTy(FTy.getParamType(2)));
869 
870   case LibFunc_memccpy_chk:
871       --NumParams;
872     if (!IsSizeTTy(FTy.getParamType(NumParams)))
873       return false;
874     LLVM_FALLTHROUGH;
875   case LibFunc_memccpy:
876     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
877   case LibFunc_memalign:
878     return (FTy.getReturnType()->isPointerTy());
879   case LibFunc_realloc:
880   case LibFunc_reallocf:
881     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
882             FTy.getParamType(0) == FTy.getReturnType() &&
883             IsSizeTTy(FTy.getParamType(1)));
884   case LibFunc_read:
885     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
886   case LibFunc_rewind:
887   case LibFunc_rmdir:
888   case LibFunc_remove:
889   case LibFunc_realpath:
890     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
891   case LibFunc_rename:
892     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
893             FTy.getParamType(1)->isPointerTy());
894   case LibFunc_readlink:
895     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
896             FTy.getParamType(1)->isPointerTy());
897   case LibFunc_write:
898     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
899   case LibFunc_bcopy:
900   case LibFunc_bcmp:
901     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
902             FTy.getParamType(1)->isPointerTy());
903   case LibFunc_bzero:
904     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
905   case LibFunc_calloc:
906     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
907 
908   case LibFunc_atof:
909   case LibFunc_atoi:
910   case LibFunc_atol:
911   case LibFunc_atoll:
912   case LibFunc_ferror:
913   case LibFunc_getenv:
914   case LibFunc_getpwnam:
915   case LibFunc_iprintf:
916   case LibFunc_small_printf:
917   case LibFunc_pclose:
918   case LibFunc_perror:
919   case LibFunc_printf:
920   case LibFunc_puts:
921   case LibFunc_uname:
922   case LibFunc_under_IO_getc:
923   case LibFunc_unlink:
924   case LibFunc_unsetenv:
925     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
926 
927   case LibFunc_access:
928   case LibFunc_chmod:
929   case LibFunc_chown:
930   case LibFunc_clearerr:
931   case LibFunc_closedir:
932   case LibFunc_ctermid:
933   case LibFunc_fclose:
934   case LibFunc_feof:
935   case LibFunc_fflush:
936   case LibFunc_fgetc:
937   case LibFunc_fgetc_unlocked:
938   case LibFunc_fileno:
939   case LibFunc_flockfile:
940   case LibFunc_free:
941   case LibFunc_fseek:
942   case LibFunc_fseeko64:
943   case LibFunc_fseeko:
944   case LibFunc_fsetpos:
945   case LibFunc_ftell:
946   case LibFunc_ftello64:
947   case LibFunc_ftello:
948   case LibFunc_ftrylockfile:
949   case LibFunc_funlockfile:
950   case LibFunc_getc:
951   case LibFunc_getc_unlocked:
952   case LibFunc_getlogin_r:
953   case LibFunc_mkdir:
954   case LibFunc_mktime:
955   case LibFunc_times:
956     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
957 
958   case LibFunc_fopen:
959     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
960             FTy.getParamType(0)->isPointerTy() &&
961             FTy.getParamType(1)->isPointerTy());
962   case LibFunc_fork:
963     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
964   case LibFunc_fdopen:
965     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
966             FTy.getParamType(1)->isPointerTy());
967   case LibFunc_fputc:
968   case LibFunc_fputc_unlocked:
969   case LibFunc_fstat:
970   case LibFunc_frexp:
971   case LibFunc_frexpf:
972   case LibFunc_frexpl:
973   case LibFunc_fstatvfs:
974     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
975   case LibFunc_fgets:
976   case LibFunc_fgets_unlocked:
977     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
978             FTy.getParamType(2)->isPointerTy());
979   case LibFunc_fread:
980   case LibFunc_fread_unlocked:
981     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
982             FTy.getParamType(3)->isPointerTy());
983   case LibFunc_fwrite:
984   case LibFunc_fwrite_unlocked:
985     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
986             FTy.getParamType(0)->isPointerTy() &&
987             FTy.getParamType(1)->isIntegerTy() &&
988             FTy.getParamType(2)->isIntegerTy() &&
989             FTy.getParamType(3)->isPointerTy());
990   case LibFunc_fputs:
991   case LibFunc_fputs_unlocked:
992     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
993             FTy.getParamType(1)->isPointerTy());
994   case LibFunc_fscanf:
995   case LibFunc_fiprintf:
996   case LibFunc_small_fprintf:
997   case LibFunc_fprintf:
998     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
999             FTy.getParamType(0)->isPointerTy() &&
1000             FTy.getParamType(1)->isPointerTy());
1001   case LibFunc_fgetpos:
1002     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1003             FTy.getParamType(1)->isPointerTy());
1004   case LibFunc_getchar:
1005   case LibFunc_getchar_unlocked:
1006     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1007   case LibFunc_gets:
1008     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1009   case LibFunc_getitimer:
1010     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1011   case LibFunc_ungetc:
1012     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1013   case LibFunc_utime:
1014   case LibFunc_utimes:
1015     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1016             FTy.getParamType(1)->isPointerTy());
1017   case LibFunc_putc:
1018   case LibFunc_putc_unlocked:
1019     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1020   case LibFunc_pread:
1021   case LibFunc_pwrite:
1022     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1023   case LibFunc_popen:
1024     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1025             FTy.getParamType(0)->isPointerTy() &&
1026             FTy.getParamType(1)->isPointerTy());
1027   case LibFunc_vscanf:
1028     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1029   case LibFunc_vsscanf:
1030     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1031             FTy.getParamType(2)->isPointerTy());
1032   case LibFunc_vfscanf:
1033     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1034             FTy.getParamType(2)->isPointerTy());
1035   case LibFunc_valloc:
1036     return (FTy.getReturnType()->isPointerTy());
1037   case LibFunc_vprintf:
1038     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1039   case LibFunc_vfprintf:
1040   case LibFunc_vsprintf:
1041     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1042             FTy.getParamType(1)->isPointerTy());
1043   case LibFunc_vsprintf_chk:
1044     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1045            FTy.getParamType(1)->isIntegerTy(32) &&
1046            IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1047   case LibFunc_vsnprintf:
1048     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1049             FTy.getParamType(2)->isPointerTy());
1050   case LibFunc_vsnprintf_chk:
1051     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1052            FTy.getParamType(2)->isIntegerTy(32) &&
1053            IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1054   case LibFunc_open:
1055     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1056   case LibFunc_opendir:
1057     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1058             FTy.getParamType(0)->isPointerTy());
1059   case LibFunc_tmpfile:
1060     return (FTy.getReturnType()->isPointerTy());
1061   case LibFunc_htonl:
1062   case LibFunc_ntohl:
1063     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1064             FTy.getReturnType() == FTy.getParamType(0));
1065   case LibFunc_htons:
1066   case LibFunc_ntohs:
1067     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1068             FTy.getReturnType() == FTy.getParamType(0));
1069   case LibFunc_lstat:
1070     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1071             FTy.getParamType(1)->isPointerTy());
1072   case LibFunc_lchown:
1073     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1074   case LibFunc_qsort:
1075     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1076   case LibFunc_dunder_strdup:
1077   case LibFunc_dunder_strndup:
1078     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1079             FTy.getParamType(0)->isPointerTy());
1080   case LibFunc_dunder_strtok_r:
1081     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1082   case LibFunc_under_IO_putc:
1083     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1084   case LibFunc_dunder_isoc99_scanf:
1085     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1086   case LibFunc_stat64:
1087   case LibFunc_lstat64:
1088   case LibFunc_statvfs64:
1089     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1090             FTy.getParamType(1)->isPointerTy());
1091   case LibFunc_dunder_isoc99_sscanf:
1092     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1093             FTy.getParamType(1)->isPointerTy());
1094   case LibFunc_fopen64:
1095     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1096             FTy.getParamType(0)->isPointerTy() &&
1097             FTy.getParamType(1)->isPointerTy());
1098   case LibFunc_tmpfile64:
1099     return (FTy.getReturnType()->isPointerTy());
1100   case LibFunc_fstat64:
1101   case LibFunc_fstatvfs64:
1102     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1103   case LibFunc_open64:
1104     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1105   case LibFunc_gettimeofday:
1106     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1107             FTy.getParamType(1)->isPointerTy());
1108 
1109   // new(unsigned int);
1110   case LibFunc_Znwj:
1111   // new(unsigned long);
1112   case LibFunc_Znwm:
1113   // new[](unsigned int);
1114   case LibFunc_Znaj:
1115   // new[](unsigned long);
1116   case LibFunc_Znam:
1117   // new(unsigned int);
1118   case LibFunc_msvc_new_int:
1119   // new(unsigned long long);
1120   case LibFunc_msvc_new_longlong:
1121   // new[](unsigned int);
1122   case LibFunc_msvc_new_array_int:
1123   // new[](unsigned long long);
1124   case LibFunc_msvc_new_array_longlong:
1125     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1126 
1127   // new(unsigned int, nothrow);
1128   case LibFunc_ZnwjRKSt9nothrow_t:
1129   // new(unsigned long, nothrow);
1130   case LibFunc_ZnwmRKSt9nothrow_t:
1131   // new[](unsigned int, nothrow);
1132   case LibFunc_ZnajRKSt9nothrow_t:
1133   // new[](unsigned long, nothrow);
1134   case LibFunc_ZnamRKSt9nothrow_t:
1135   // new(unsigned int, nothrow);
1136   case LibFunc_msvc_new_int_nothrow:
1137   // new(unsigned long long, nothrow);
1138   case LibFunc_msvc_new_longlong_nothrow:
1139   // new[](unsigned int, nothrow);
1140   case LibFunc_msvc_new_array_int_nothrow:
1141   // new[](unsigned long long, nothrow);
1142   case LibFunc_msvc_new_array_longlong_nothrow:
1143   // new(unsigned int, align_val_t)
1144   case LibFunc_ZnwjSt11align_val_t:
1145   // new(unsigned long, align_val_t)
1146   case LibFunc_ZnwmSt11align_val_t:
1147   // new[](unsigned int, align_val_t)
1148   case LibFunc_ZnajSt11align_val_t:
1149   // new[](unsigned long, align_val_t)
1150   case LibFunc_ZnamSt11align_val_t:
1151     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1152 
1153   // new(unsigned int, align_val_t, nothrow)
1154   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1155   // new(unsigned long, align_val_t, nothrow)
1156   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1157   // new[](unsigned int, align_val_t, nothrow)
1158   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1159   // new[](unsigned long, align_val_t, nothrow)
1160   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1161     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1162 
1163   // void operator delete[](void*);
1164   case LibFunc_ZdaPv:
1165   // void operator delete(void*);
1166   case LibFunc_ZdlPv:
1167   // void operator delete[](void*);
1168   case LibFunc_msvc_delete_array_ptr32:
1169   // void operator delete[](void*);
1170   case LibFunc_msvc_delete_array_ptr64:
1171   // void operator delete(void*);
1172   case LibFunc_msvc_delete_ptr32:
1173   // void operator delete(void*);
1174   case LibFunc_msvc_delete_ptr64:
1175     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1176 
1177   // void operator delete[](void*, nothrow);
1178   case LibFunc_ZdaPvRKSt9nothrow_t:
1179   // void operator delete[](void*, unsigned int);
1180   case LibFunc_ZdaPvj:
1181   // void operator delete[](void*, unsigned long);
1182   case LibFunc_ZdaPvm:
1183   // void operator delete(void*, nothrow);
1184   case LibFunc_ZdlPvRKSt9nothrow_t:
1185   // void operator delete(void*, unsigned int);
1186   case LibFunc_ZdlPvj:
1187   // void operator delete(void*, unsigned long);
1188   case LibFunc_ZdlPvm:
1189   // void operator delete(void*, align_val_t)
1190   case LibFunc_ZdlPvSt11align_val_t:
1191   // void operator delete[](void*, align_val_t)
1192   case LibFunc_ZdaPvSt11align_val_t:
1193   // void operator delete[](void*, unsigned int);
1194   case LibFunc_msvc_delete_array_ptr32_int:
1195   // void operator delete[](void*, nothrow);
1196   case LibFunc_msvc_delete_array_ptr32_nothrow:
1197   // void operator delete[](void*, unsigned long long);
1198   case LibFunc_msvc_delete_array_ptr64_longlong:
1199   // void operator delete[](void*, nothrow);
1200   case LibFunc_msvc_delete_array_ptr64_nothrow:
1201   // void operator delete(void*, unsigned int);
1202   case LibFunc_msvc_delete_ptr32_int:
1203   // void operator delete(void*, nothrow);
1204   case LibFunc_msvc_delete_ptr32_nothrow:
1205   // void operator delete(void*, unsigned long long);
1206   case LibFunc_msvc_delete_ptr64_longlong:
1207   // void operator delete(void*, nothrow);
1208   case LibFunc_msvc_delete_ptr64_nothrow:
1209     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1210 
1211   // void operator delete(void*, align_val_t, nothrow)
1212   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1213   // void operator delete[](void*, align_val_t, nothrow)
1214   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1215     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1216 
1217   case LibFunc_memset_pattern16:
1218     return (!FTy.isVarArg() && NumParams == 3 &&
1219             FTy.getParamType(0)->isPointerTy() &&
1220             FTy.getParamType(1)->isPointerTy() &&
1221             FTy.getParamType(2)->isIntegerTy());
1222 
1223   case LibFunc_cxa_guard_abort:
1224   case LibFunc_cxa_guard_acquire:
1225   case LibFunc_cxa_guard_release:
1226   case LibFunc_nvvm_reflect:
1227     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1228 
1229   case LibFunc_sincospi_stret:
1230   case LibFunc_sincospif_stret:
1231     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1232 
1233   case LibFunc_acos:
1234   case LibFunc_acos_finite:
1235   case LibFunc_acosf:
1236   case LibFunc_acosf_finite:
1237   case LibFunc_acosh:
1238   case LibFunc_acosh_finite:
1239   case LibFunc_acoshf:
1240   case LibFunc_acoshf_finite:
1241   case LibFunc_acoshl:
1242   case LibFunc_acoshl_finite:
1243   case LibFunc_acosl:
1244   case LibFunc_acosl_finite:
1245   case LibFunc_asin:
1246   case LibFunc_asin_finite:
1247   case LibFunc_asinf:
1248   case LibFunc_asinf_finite:
1249   case LibFunc_asinh:
1250   case LibFunc_asinhf:
1251   case LibFunc_asinhl:
1252   case LibFunc_asinl:
1253   case LibFunc_asinl_finite:
1254   case LibFunc_atan:
1255   case LibFunc_atanf:
1256   case LibFunc_atanh:
1257   case LibFunc_atanh_finite:
1258   case LibFunc_atanhf:
1259   case LibFunc_atanhf_finite:
1260   case LibFunc_atanhl:
1261   case LibFunc_atanhl_finite:
1262   case LibFunc_atanl:
1263   case LibFunc_cbrt:
1264   case LibFunc_cbrtf:
1265   case LibFunc_cbrtl:
1266   case LibFunc_ceil:
1267   case LibFunc_ceilf:
1268   case LibFunc_ceill:
1269   case LibFunc_cos:
1270   case LibFunc_cosf:
1271   case LibFunc_cosh:
1272   case LibFunc_cosh_finite:
1273   case LibFunc_coshf:
1274   case LibFunc_coshf_finite:
1275   case LibFunc_coshl:
1276   case LibFunc_coshl_finite:
1277   case LibFunc_cosl:
1278   case LibFunc_exp10:
1279   case LibFunc_exp10_finite:
1280   case LibFunc_exp10f:
1281   case LibFunc_exp10f_finite:
1282   case LibFunc_exp10l:
1283   case LibFunc_exp10l_finite:
1284   case LibFunc_exp2:
1285   case LibFunc_exp2_finite:
1286   case LibFunc_exp2f:
1287   case LibFunc_exp2f_finite:
1288   case LibFunc_exp2l:
1289   case LibFunc_exp2l_finite:
1290   case LibFunc_exp:
1291   case LibFunc_exp_finite:
1292   case LibFunc_expf:
1293   case LibFunc_expf_finite:
1294   case LibFunc_expl:
1295   case LibFunc_expl_finite:
1296   case LibFunc_expm1:
1297   case LibFunc_expm1f:
1298   case LibFunc_expm1l:
1299   case LibFunc_fabs:
1300   case LibFunc_fabsf:
1301   case LibFunc_fabsl:
1302   case LibFunc_floor:
1303   case LibFunc_floorf:
1304   case LibFunc_floorl:
1305   case LibFunc_log10:
1306   case LibFunc_log10_finite:
1307   case LibFunc_log10f:
1308   case LibFunc_log10f_finite:
1309   case LibFunc_log10l:
1310   case LibFunc_log10l_finite:
1311   case LibFunc_log1p:
1312   case LibFunc_log1pf:
1313   case LibFunc_log1pl:
1314   case LibFunc_log2:
1315   case LibFunc_log2_finite:
1316   case LibFunc_log2f:
1317   case LibFunc_log2f_finite:
1318   case LibFunc_log2l:
1319   case LibFunc_log2l_finite:
1320   case LibFunc_log:
1321   case LibFunc_log_finite:
1322   case LibFunc_logb:
1323   case LibFunc_logbf:
1324   case LibFunc_logbl:
1325   case LibFunc_logf:
1326   case LibFunc_logf_finite:
1327   case LibFunc_logl:
1328   case LibFunc_logl_finite:
1329   case LibFunc_nearbyint:
1330   case LibFunc_nearbyintf:
1331   case LibFunc_nearbyintl:
1332   case LibFunc_rint:
1333   case LibFunc_rintf:
1334   case LibFunc_rintl:
1335   case LibFunc_round:
1336   case LibFunc_roundf:
1337   case LibFunc_roundl:
1338   case LibFunc_sin:
1339   case LibFunc_sinf:
1340   case LibFunc_sinh:
1341   case LibFunc_sinh_finite:
1342   case LibFunc_sinhf:
1343   case LibFunc_sinhf_finite:
1344   case LibFunc_sinhl:
1345   case LibFunc_sinhl_finite:
1346   case LibFunc_sinl:
1347   case LibFunc_sqrt:
1348   case LibFunc_sqrt_finite:
1349   case LibFunc_sqrtf:
1350   case LibFunc_sqrtf_finite:
1351   case LibFunc_sqrtl:
1352   case LibFunc_sqrtl_finite:
1353   case LibFunc_tan:
1354   case LibFunc_tanf:
1355   case LibFunc_tanh:
1356   case LibFunc_tanhf:
1357   case LibFunc_tanhl:
1358   case LibFunc_tanl:
1359   case LibFunc_trunc:
1360   case LibFunc_truncf:
1361   case LibFunc_truncl:
1362     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1363             FTy.getReturnType() == FTy.getParamType(0));
1364 
1365   case LibFunc_atan2:
1366   case LibFunc_atan2_finite:
1367   case LibFunc_atan2f:
1368   case LibFunc_atan2f_finite:
1369   case LibFunc_atan2l:
1370   case LibFunc_atan2l_finite:
1371   case LibFunc_fmin:
1372   case LibFunc_fminf:
1373   case LibFunc_fminl:
1374   case LibFunc_fmax:
1375   case LibFunc_fmaxf:
1376   case LibFunc_fmaxl:
1377   case LibFunc_fmod:
1378   case LibFunc_fmodf:
1379   case LibFunc_fmodl:
1380   case LibFunc_copysign:
1381   case LibFunc_copysignf:
1382   case LibFunc_copysignl:
1383   case LibFunc_pow:
1384   case LibFunc_pow_finite:
1385   case LibFunc_powf:
1386   case LibFunc_powf_finite:
1387   case LibFunc_powl:
1388   case LibFunc_powl_finite:
1389     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1390             FTy.getReturnType() == FTy.getParamType(0) &&
1391             FTy.getReturnType() == FTy.getParamType(1));
1392 
1393   case LibFunc_ldexp:
1394   case LibFunc_ldexpf:
1395   case LibFunc_ldexpl:
1396     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1397             FTy.getReturnType() == FTy.getParamType(0) &&
1398             FTy.getParamType(1)->isIntegerTy(32));
1399 
1400   case LibFunc_ffs:
1401   case LibFunc_ffsl:
1402   case LibFunc_ffsll:
1403   case LibFunc_fls:
1404   case LibFunc_flsl:
1405   case LibFunc_flsll:
1406     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1407             FTy.getParamType(0)->isIntegerTy());
1408 
1409   case LibFunc_isdigit:
1410   case LibFunc_isascii:
1411   case LibFunc_toascii:
1412   case LibFunc_putchar:
1413   case LibFunc_putchar_unlocked:
1414     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1415             FTy.getReturnType() == FTy.getParamType(0));
1416 
1417   case LibFunc_abs:
1418   case LibFunc_labs:
1419   case LibFunc_llabs:
1420     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1421             FTy.getReturnType() == FTy.getParamType(0));
1422 
1423   case LibFunc_cxa_atexit:
1424     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1425             FTy.getParamType(0)->isPointerTy() &&
1426             FTy.getParamType(1)->isPointerTy() &&
1427             FTy.getParamType(2)->isPointerTy());
1428 
1429   case LibFunc_sinpi:
1430   case LibFunc_cospi:
1431     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1432             FTy.getReturnType() == FTy.getParamType(0));
1433 
1434   case LibFunc_sinpif:
1435   case LibFunc_cospif:
1436     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1437             FTy.getReturnType() == FTy.getParamType(0));
1438 
1439   case LibFunc_strnlen:
1440     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1441             FTy.getParamType(0) == PCharTy &&
1442             FTy.getParamType(1) == SizeTTy);
1443 
1444   case LibFunc_posix_memalign:
1445     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1446             FTy.getParamType(0)->isPointerTy() &&
1447             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1448 
1449   case LibFunc_wcslen:
1450     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1451             FTy.getReturnType()->isIntegerTy());
1452 
1453   case LibFunc_cabs:
1454   case LibFunc_cabsf:
1455   case LibFunc_cabsl: {
1456     Type* RetTy = FTy.getReturnType();
1457     if (!RetTy->isFloatingPointTy())
1458       return false;
1459 
1460     // NOTE: These prototypes are target specific and currently support
1461     // "complex" passed as an array or discrete real & imaginary parameters.
1462     // Add other calling conventions to enable libcall optimizations.
1463     if (NumParams == 1)
1464       return (FTy.getParamType(0)->isArrayTy() &&
1465               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1466               FTy.getParamType(0)->getArrayElementType() == RetTy);
1467     else if (NumParams == 2)
1468       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1469     else
1470       return false;
1471   }
1472   case LibFunc::NumLibFuncs:
1473   case LibFunc::NotLibFunc:
1474     break;
1475   }
1476 
1477   llvm_unreachable("Invalid libfunc");
1478 }
1479 
1480 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1481                                        LibFunc &F) const {
1482   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1483   // intrinsics, this ends up being an interesting compile time win since we
1484   // avoid string normalization and comparison.
1485   if (FDecl.isIntrinsic()) return false;
1486 
1487   const DataLayout *DL =
1488       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1489   return getLibFunc(FDecl.getName(), F) &&
1490          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1491 }
1492 
1493 void TargetLibraryInfoImpl::disableAllFunctions() {
1494   memset(AvailableArray, 0, sizeof(AvailableArray));
1495 }
1496 
1497 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1498   return LHS.ScalarFnName < RHS.ScalarFnName;
1499 }
1500 
1501 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1502   return LHS.VectorFnName < RHS.VectorFnName;
1503 }
1504 
1505 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1506   return LHS.ScalarFnName < S;
1507 }
1508 
1509 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1510   return LHS.VectorFnName < S;
1511 }
1512 
1513 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1514   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1515   llvm::sort(VectorDescs, compareByScalarFnName);
1516 
1517   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1518   llvm::sort(ScalarDescs, compareByVectorFnName);
1519 }
1520 
1521 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1522     enum VectorLibrary VecLib) {
1523   switch (VecLib) {
1524   case Accelerate: {
1525     const VecDesc VecFuncs[] = {
1526     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1527     #include "llvm/Analysis/VecFuncs.def"
1528     };
1529     addVectorizableFunctions(VecFuncs);
1530     break;
1531   }
1532   case MASSV: {
1533     const VecDesc VecFuncs[] = {
1534     #define TLI_DEFINE_MASSV_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(const Function &F,
1593                                              FunctionAnalysisManager &) {
1594   if (!BaselineInfoImpl)
1595     BaselineInfoImpl =
1596         TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1597   return TargetLibraryInfo(*BaselineInfoImpl, &F);
1598 }
1599 
1600 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1601   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1602       M.getModuleFlag("wchar_size")))
1603     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1604   return 0;
1605 }
1606 
1607 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1608     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1609   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1610 }
1611 
1612 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1613     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1614   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1615 }
1616 
1617 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1618     const TargetLibraryInfoImpl &TLIImpl)
1619     : ImmutablePass(ID), TLA(TLIImpl) {
1620   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1621 }
1622 
1623 AnalysisKey TargetLibraryAnalysis::Key;
1624 
1625 // Register the basic pass.
1626 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1627                 "Target Library Information", false, true)
1628 char TargetLibraryInfoWrapperPass::ID = 0;
1629 
1630 void TargetLibraryInfoWrapperPass::anchor() {}
1631 
1632 unsigned TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF) const {
1633   ScalarF = sanitizeFunctionName(ScalarF);
1634   if (ScalarF.empty())
1635     return 1;
1636 
1637   unsigned VF = 1;
1638   std::vector<VecDesc>::const_iterator I =
1639       llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1640   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1641     if (I->VectorizationFactor > VF)
1642       VF = I->VectorizationFactor;
1643     ++I;
1644   }
1645   return VF;
1646 }
1647