1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the TargetLibraryInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/Analysis/TargetLibraryInfo.h"
14 #include "llvm/ADT/Triple.h"
15 #include "llvm/IR/Constants.h"
16 #include "llvm/Support/CommandLine.h"
17 using namespace llvm;
18 
19 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
20     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
21     cl::init(TargetLibraryInfoImpl::NoLibrary),
22     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
23                           "No vector functions library"),
24                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
25                           "Accelerate framework"),
26                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
27                           "Intel SVML library")));
28 
29 StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
30 #define TLI_DEFINE_STRING
31 #include "llvm/Analysis/TargetLibraryInfo.def"
32 };
33 
34 static bool hasSinCosPiStret(const Triple &T) {
35   // Only Darwin variants have _stret versions of combined trig functions.
36   if (!T.isOSDarwin())
37     return false;
38 
39   // The ABI is rather complicated on x86, so don't do anything special there.
40   if (T.getArch() == Triple::x86)
41     return false;
42 
43   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
44     return false;
45 
46   if (T.isiOS() && T.isOSVersionLT(7, 0))
47     return false;
48 
49   return true;
50 }
51 
52 /// Initialize the set of available library functions based on the specified
53 /// target triple. This should be carefully written so that a missing target
54 /// triple gets a sane set of defaults.
55 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
56                        ArrayRef<StringRef> StandardNames) {
57   // Verify that the StandardNames array is in alphabetical order.
58   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
59                         [](StringRef LHS, StringRef RHS) {
60                           return LHS < RHS;
61                         }) &&
62          "TargetLibraryInfoImpl function names must be sorted");
63 
64   // Set IO unlocked variants as unavailable
65   // Set them as available per system below
66   TLI.setUnavailable(LibFunc_getchar_unlocked);
67   TLI.setUnavailable(LibFunc_putc_unlocked);
68   TLI.setUnavailable(LibFunc_putchar_unlocked);
69   TLI.setUnavailable(LibFunc_fputc_unlocked);
70   TLI.setUnavailable(LibFunc_fgetc_unlocked);
71   TLI.setUnavailable(LibFunc_fread_unlocked);
72   TLI.setUnavailable(LibFunc_fwrite_unlocked);
73   TLI.setUnavailable(LibFunc_fputs_unlocked);
74   TLI.setUnavailable(LibFunc_fgets_unlocked);
75 
76   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
77        ShouldSignExtI32Param = false;
78   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
79   // returns corresponding to C-level ints and unsigned ints.
80   if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le ||
81       T.getArch() == Triple::sparcv9 || T.getArch() == Triple::systemz) {
82     ShouldExtI32Param = true;
83     ShouldExtI32Return = true;
84   }
85   // Mips, on the other hand, needs signext on i32 parameters corresponding
86   // to both signed and unsigned ints.
87   if (T.isMIPS()) {
88     ShouldSignExtI32Param = true;
89   }
90   TLI.setShouldExtI32Param(ShouldExtI32Param);
91   TLI.setShouldExtI32Return(ShouldExtI32Return);
92   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
93 
94   if (T.getArch() == Triple::r600 ||
95       T.getArch() == Triple::amdgcn) {
96     TLI.setUnavailable(LibFunc_ldexp);
97     TLI.setUnavailable(LibFunc_ldexpf);
98     TLI.setUnavailable(LibFunc_ldexpl);
99     TLI.setUnavailable(LibFunc_exp10);
100     TLI.setUnavailable(LibFunc_exp10f);
101     TLI.setUnavailable(LibFunc_exp10l);
102     TLI.setUnavailable(LibFunc_log10);
103     TLI.setUnavailable(LibFunc_log10f);
104     TLI.setUnavailable(LibFunc_log10l);
105   }
106 
107   // There are no library implementations of mempcy and memset for AMD gpus and
108   // these can be difficult to lower in the backend.
109   if (T.getArch() == Triple::r600 ||
110       T.getArch() == Triple::amdgcn) {
111     TLI.setUnavailable(LibFunc_memcpy);
112     TLI.setUnavailable(LibFunc_memset);
113     TLI.setUnavailable(LibFunc_memset_pattern16);
114     return;
115   }
116 
117   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
118   // All versions of watchOS support it.
119   if (T.isMacOSX()) {
120     // available IO unlocked variants on Mac OS X
121     TLI.setAvailable(LibFunc_getc_unlocked);
122     TLI.setAvailable(LibFunc_getchar_unlocked);
123     TLI.setAvailable(LibFunc_putc_unlocked);
124     TLI.setAvailable(LibFunc_putchar_unlocked);
125 
126     if (T.isMacOSXVersionLT(10, 5))
127       TLI.setUnavailable(LibFunc_memset_pattern16);
128   } else if (T.isiOS()) {
129     if (T.isOSVersionLT(3, 0))
130       TLI.setUnavailable(LibFunc_memset_pattern16);
131   } else if (!T.isWatchOS()) {
132     TLI.setUnavailable(LibFunc_memset_pattern16);
133   }
134 
135   if (!hasSinCosPiStret(T)) {
136     TLI.setUnavailable(LibFunc_sinpi);
137     TLI.setUnavailable(LibFunc_sinpif);
138     TLI.setUnavailable(LibFunc_cospi);
139     TLI.setUnavailable(LibFunc_cospif);
140     TLI.setUnavailable(LibFunc_sincospi_stret);
141     TLI.setUnavailable(LibFunc_sincospif_stret);
142   }
143 
144   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
145       !T.isMacOSXVersionLT(10, 7)) {
146     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
147     // we don't care about) have two versions; on recent OSX, the one we want
148     // has a $UNIX2003 suffix. The two implementations are identical except
149     // for the return value in some edge cases.  However, we don't want to
150     // generate code that depends on the old symbols.
151     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
152     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
153   }
154 
155   // iprintf and friends are only available on XCore and TCE.
156   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
157     TLI.setUnavailable(LibFunc_iprintf);
158     TLI.setUnavailable(LibFunc_siprintf);
159     TLI.setUnavailable(LibFunc_fiprintf);
160   }
161 
162   if (T.isOSWindows() && !T.isOSCygMing()) {
163     // Win32 does not support long double
164     TLI.setUnavailable(LibFunc_acosl);
165     TLI.setUnavailable(LibFunc_asinl);
166     TLI.setUnavailable(LibFunc_atanl);
167     TLI.setUnavailable(LibFunc_atan2l);
168     TLI.setUnavailable(LibFunc_ceill);
169     TLI.setUnavailable(LibFunc_copysignl);
170     TLI.setUnavailable(LibFunc_cosl);
171     TLI.setUnavailable(LibFunc_coshl);
172     TLI.setUnavailable(LibFunc_expl);
173     TLI.setUnavailable(LibFunc_fabsf); // Win32 and Win64 both lack fabsf
174     TLI.setUnavailable(LibFunc_fabsl);
175     TLI.setUnavailable(LibFunc_floorl);
176     TLI.setUnavailable(LibFunc_fmaxl);
177     TLI.setUnavailable(LibFunc_fminl);
178     TLI.setUnavailable(LibFunc_fmodl);
179     TLI.setUnavailable(LibFunc_frexpl);
180     TLI.setUnavailable(LibFunc_ldexpf);
181     TLI.setUnavailable(LibFunc_ldexpl);
182     TLI.setUnavailable(LibFunc_logl);
183     TLI.setUnavailable(LibFunc_modfl);
184     TLI.setUnavailable(LibFunc_powl);
185     TLI.setUnavailable(LibFunc_sinl);
186     TLI.setUnavailable(LibFunc_sinhl);
187     TLI.setUnavailable(LibFunc_sqrtl);
188     TLI.setUnavailable(LibFunc_tanl);
189     TLI.setUnavailable(LibFunc_tanhl);
190 
191     // Win32 only has C89 math
192     TLI.setUnavailable(LibFunc_acosh);
193     TLI.setUnavailable(LibFunc_acoshf);
194     TLI.setUnavailable(LibFunc_acoshl);
195     TLI.setUnavailable(LibFunc_asinh);
196     TLI.setUnavailable(LibFunc_asinhf);
197     TLI.setUnavailable(LibFunc_asinhl);
198     TLI.setUnavailable(LibFunc_atanh);
199     TLI.setUnavailable(LibFunc_atanhf);
200     TLI.setUnavailable(LibFunc_atanhl);
201     TLI.setUnavailable(LibFunc_cabs);
202     TLI.setUnavailable(LibFunc_cabsf);
203     TLI.setUnavailable(LibFunc_cabsl);
204     TLI.setUnavailable(LibFunc_cbrt);
205     TLI.setUnavailable(LibFunc_cbrtf);
206     TLI.setUnavailable(LibFunc_cbrtl);
207     TLI.setUnavailable(LibFunc_exp2);
208     TLI.setUnavailable(LibFunc_exp2f);
209     TLI.setUnavailable(LibFunc_exp2l);
210     TLI.setUnavailable(LibFunc_expm1);
211     TLI.setUnavailable(LibFunc_expm1f);
212     TLI.setUnavailable(LibFunc_expm1l);
213     TLI.setUnavailable(LibFunc_log2);
214     TLI.setUnavailable(LibFunc_log2f);
215     TLI.setUnavailable(LibFunc_log2l);
216     TLI.setUnavailable(LibFunc_log1p);
217     TLI.setUnavailable(LibFunc_log1pf);
218     TLI.setUnavailable(LibFunc_log1pl);
219     TLI.setUnavailable(LibFunc_logb);
220     TLI.setUnavailable(LibFunc_logbf);
221     TLI.setUnavailable(LibFunc_logbl);
222     TLI.setUnavailable(LibFunc_nearbyint);
223     TLI.setUnavailable(LibFunc_nearbyintf);
224     TLI.setUnavailable(LibFunc_nearbyintl);
225     TLI.setUnavailable(LibFunc_rint);
226     TLI.setUnavailable(LibFunc_rintf);
227     TLI.setUnavailable(LibFunc_rintl);
228     TLI.setUnavailable(LibFunc_round);
229     TLI.setUnavailable(LibFunc_roundf);
230     TLI.setUnavailable(LibFunc_roundl);
231     TLI.setUnavailable(LibFunc_trunc);
232     TLI.setUnavailable(LibFunc_truncf);
233     TLI.setUnavailable(LibFunc_truncl);
234 
235     // Win32 provides some C99 math with mangled names
236     TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
237 
238     if (T.getArch() == Triple::x86) {
239       // Win32 on x86 implements single-precision math functions as macros
240       TLI.setUnavailable(LibFunc_acosf);
241       TLI.setUnavailable(LibFunc_asinf);
242       TLI.setUnavailable(LibFunc_atanf);
243       TLI.setUnavailable(LibFunc_atan2f);
244       TLI.setUnavailable(LibFunc_ceilf);
245       TLI.setUnavailable(LibFunc_copysignf);
246       TLI.setUnavailable(LibFunc_cosf);
247       TLI.setUnavailable(LibFunc_coshf);
248       TLI.setUnavailable(LibFunc_expf);
249       TLI.setUnavailable(LibFunc_floorf);
250       TLI.setUnavailable(LibFunc_fminf);
251       TLI.setUnavailable(LibFunc_fmaxf);
252       TLI.setUnavailable(LibFunc_fmodf);
253       TLI.setUnavailable(LibFunc_logf);
254       TLI.setUnavailable(LibFunc_log10f);
255       TLI.setUnavailable(LibFunc_modff);
256       TLI.setUnavailable(LibFunc_powf);
257       TLI.setUnavailable(LibFunc_sinf);
258       TLI.setUnavailable(LibFunc_sinhf);
259       TLI.setUnavailable(LibFunc_sqrtf);
260       TLI.setUnavailable(LibFunc_tanf);
261       TLI.setUnavailable(LibFunc_tanhf);
262     }
263 
264     // Win32 does *not* provide these functions, but they are
265     // generally available on POSIX-compliant systems:
266     TLI.setUnavailable(LibFunc_access);
267     TLI.setUnavailable(LibFunc_bcmp);
268     TLI.setUnavailable(LibFunc_bcopy);
269     TLI.setUnavailable(LibFunc_bzero);
270     TLI.setUnavailable(LibFunc_chmod);
271     TLI.setUnavailable(LibFunc_chown);
272     TLI.setUnavailable(LibFunc_closedir);
273     TLI.setUnavailable(LibFunc_ctermid);
274     TLI.setUnavailable(LibFunc_fdopen);
275     TLI.setUnavailable(LibFunc_ffs);
276     TLI.setUnavailable(LibFunc_fileno);
277     TLI.setUnavailable(LibFunc_flockfile);
278     TLI.setUnavailable(LibFunc_fseeko);
279     TLI.setUnavailable(LibFunc_fstat);
280     TLI.setUnavailable(LibFunc_fstatvfs);
281     TLI.setUnavailable(LibFunc_ftello);
282     TLI.setUnavailable(LibFunc_ftrylockfile);
283     TLI.setUnavailable(LibFunc_funlockfile);
284     TLI.setUnavailable(LibFunc_getitimer);
285     TLI.setUnavailable(LibFunc_getlogin_r);
286     TLI.setUnavailable(LibFunc_getpwnam);
287     TLI.setUnavailable(LibFunc_gettimeofday);
288     TLI.setUnavailable(LibFunc_htonl);
289     TLI.setUnavailable(LibFunc_htons);
290     TLI.setUnavailable(LibFunc_lchown);
291     TLI.setUnavailable(LibFunc_lstat);
292     TLI.setUnavailable(LibFunc_memccpy);
293     TLI.setUnavailable(LibFunc_mkdir);
294     TLI.setUnavailable(LibFunc_ntohl);
295     TLI.setUnavailable(LibFunc_ntohs);
296     TLI.setUnavailable(LibFunc_open);
297     TLI.setUnavailable(LibFunc_opendir);
298     TLI.setUnavailable(LibFunc_pclose);
299     TLI.setUnavailable(LibFunc_popen);
300     TLI.setUnavailable(LibFunc_pread);
301     TLI.setUnavailable(LibFunc_pwrite);
302     TLI.setUnavailable(LibFunc_read);
303     TLI.setUnavailable(LibFunc_readlink);
304     TLI.setUnavailable(LibFunc_realpath);
305     TLI.setUnavailable(LibFunc_rmdir);
306     TLI.setUnavailable(LibFunc_setitimer);
307     TLI.setUnavailable(LibFunc_stat);
308     TLI.setUnavailable(LibFunc_statvfs);
309     TLI.setUnavailable(LibFunc_stpcpy);
310     TLI.setUnavailable(LibFunc_stpncpy);
311     TLI.setUnavailable(LibFunc_strcasecmp);
312     TLI.setUnavailable(LibFunc_strncasecmp);
313     TLI.setUnavailable(LibFunc_times);
314     TLI.setUnavailable(LibFunc_uname);
315     TLI.setUnavailable(LibFunc_unlink);
316     TLI.setUnavailable(LibFunc_unsetenv);
317     TLI.setUnavailable(LibFunc_utime);
318     TLI.setUnavailable(LibFunc_utimes);
319     TLI.setUnavailable(LibFunc_write);
320 
321     // Win32 does *not* provide provide these functions, but they are
322     // specified by C99:
323     TLI.setUnavailable(LibFunc_atoll);
324     TLI.setUnavailable(LibFunc_frexpf);
325     TLI.setUnavailable(LibFunc_llabs);
326   }
327 
328   switch (T.getOS()) {
329   case Triple::MacOSX:
330     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
331     // and their names are __exp10 and __exp10f. exp10l is not available on
332     // OS X or iOS.
333     TLI.setUnavailable(LibFunc_exp10l);
334     if (T.isMacOSXVersionLT(10, 9)) {
335       TLI.setUnavailable(LibFunc_exp10);
336       TLI.setUnavailable(LibFunc_exp10f);
337     } else {
338       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
339       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
340     }
341     break;
342   case Triple::IOS:
343   case Triple::TvOS:
344   case Triple::WatchOS:
345     TLI.setUnavailable(LibFunc_exp10l);
346     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
347                            (T.isOSVersionLT(9, 0) &&
348                             (T.getArch() == Triple::x86 ||
349                              T.getArch() == Triple::x86_64)))) {
350       TLI.setUnavailable(LibFunc_exp10);
351       TLI.setUnavailable(LibFunc_exp10f);
352     } else {
353       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
354       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
355     }
356     break;
357   case Triple::Linux:
358     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
359     // buggy prior to glibc version 2.18. Until this version is widely deployed
360     // or we have a reasonable detection strategy, we cannot use exp10 reliably
361     // on Linux.
362     //
363     // Fall through to disable all of them.
364     LLVM_FALLTHROUGH;
365   default:
366     TLI.setUnavailable(LibFunc_exp10);
367     TLI.setUnavailable(LibFunc_exp10f);
368     TLI.setUnavailable(LibFunc_exp10l);
369   }
370 
371   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
372   // Linux (GLIBC):
373   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
374   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
375   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
376   switch (T.getOS()) {
377   case Triple::Darwin:
378   case Triple::MacOSX:
379   case Triple::IOS:
380   case Triple::TvOS:
381   case Triple::WatchOS:
382   case Triple::FreeBSD:
383   case Triple::Linux:
384     break;
385   default:
386     TLI.setUnavailable(LibFunc_ffsl);
387   }
388 
389   // ffsll is available on at least FreeBSD and Linux (GLIBC):
390   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
391   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
392   switch (T.getOS()) {
393   case Triple::Darwin:
394   case Triple::MacOSX:
395   case Triple::IOS:
396   case Triple::TvOS:
397   case Triple::WatchOS:
398   case Triple::FreeBSD:
399   case Triple::Linux:
400     break;
401   default:
402     TLI.setUnavailable(LibFunc_ffsll);
403   }
404 
405   // The following functions are available on at least FreeBSD:
406   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
407   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
408   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
409   if (!T.isOSFreeBSD()) {
410     TLI.setUnavailable(LibFunc_fls);
411     TLI.setUnavailable(LibFunc_flsl);
412     TLI.setUnavailable(LibFunc_flsll);
413   }
414 
415   // The following functions are only available on GNU/Linux (using glibc).
416   // Linux variants without glibc (eg: bionic, musl) may have some subset.
417   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
418     TLI.setUnavailable(LibFunc_dunder_strdup);
419     TLI.setUnavailable(LibFunc_dunder_strtok_r);
420     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
421     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
422     TLI.setUnavailable(LibFunc_under_IO_getc);
423     TLI.setUnavailable(LibFunc_under_IO_putc);
424     // But, Android and musl have memalign.
425     if (!T.isAndroid() && !T.isMusl())
426       TLI.setUnavailable(LibFunc_memalign);
427     TLI.setUnavailable(LibFunc_fopen64);
428     TLI.setUnavailable(LibFunc_fseeko64);
429     TLI.setUnavailable(LibFunc_fstat64);
430     TLI.setUnavailable(LibFunc_fstatvfs64);
431     TLI.setUnavailable(LibFunc_ftello64);
432     TLI.setUnavailable(LibFunc_lstat64);
433     TLI.setUnavailable(LibFunc_open64);
434     TLI.setUnavailable(LibFunc_stat64);
435     TLI.setUnavailable(LibFunc_statvfs64);
436     TLI.setUnavailable(LibFunc_tmpfile64);
437 
438     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
439     TLI.setUnavailable(LibFunc_acos_finite);
440     TLI.setUnavailable(LibFunc_acosf_finite);
441     TLI.setUnavailable(LibFunc_acosl_finite);
442     TLI.setUnavailable(LibFunc_acosh_finite);
443     TLI.setUnavailable(LibFunc_acoshf_finite);
444     TLI.setUnavailable(LibFunc_acoshl_finite);
445     TLI.setUnavailable(LibFunc_asin_finite);
446     TLI.setUnavailable(LibFunc_asinf_finite);
447     TLI.setUnavailable(LibFunc_asinl_finite);
448     TLI.setUnavailable(LibFunc_atan2_finite);
449     TLI.setUnavailable(LibFunc_atan2f_finite);
450     TLI.setUnavailable(LibFunc_atan2l_finite);
451     TLI.setUnavailable(LibFunc_atanh_finite);
452     TLI.setUnavailable(LibFunc_atanhf_finite);
453     TLI.setUnavailable(LibFunc_atanhl_finite);
454     TLI.setUnavailable(LibFunc_cosh_finite);
455     TLI.setUnavailable(LibFunc_coshf_finite);
456     TLI.setUnavailable(LibFunc_coshl_finite);
457     TLI.setUnavailable(LibFunc_exp10_finite);
458     TLI.setUnavailable(LibFunc_exp10f_finite);
459     TLI.setUnavailable(LibFunc_exp10l_finite);
460     TLI.setUnavailable(LibFunc_exp2_finite);
461     TLI.setUnavailable(LibFunc_exp2f_finite);
462     TLI.setUnavailable(LibFunc_exp2l_finite);
463     TLI.setUnavailable(LibFunc_exp_finite);
464     TLI.setUnavailable(LibFunc_expf_finite);
465     TLI.setUnavailable(LibFunc_expl_finite);
466     TLI.setUnavailable(LibFunc_log10_finite);
467     TLI.setUnavailable(LibFunc_log10f_finite);
468     TLI.setUnavailable(LibFunc_log10l_finite);
469     TLI.setUnavailable(LibFunc_log2_finite);
470     TLI.setUnavailable(LibFunc_log2f_finite);
471     TLI.setUnavailable(LibFunc_log2l_finite);
472     TLI.setUnavailable(LibFunc_log_finite);
473     TLI.setUnavailable(LibFunc_logf_finite);
474     TLI.setUnavailable(LibFunc_logl_finite);
475     TLI.setUnavailable(LibFunc_pow_finite);
476     TLI.setUnavailable(LibFunc_powf_finite);
477     TLI.setUnavailable(LibFunc_powl_finite);
478     TLI.setUnavailable(LibFunc_sinh_finite);
479     TLI.setUnavailable(LibFunc_sinhf_finite);
480     TLI.setUnavailable(LibFunc_sinhl_finite);
481   }
482 
483   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
484       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
485     // available IO unlocked variants on GNU/Linux and Android P or later
486     TLI.setAvailable(LibFunc_getc_unlocked);
487     TLI.setAvailable(LibFunc_getchar_unlocked);
488     TLI.setAvailable(LibFunc_putc_unlocked);
489     TLI.setAvailable(LibFunc_putchar_unlocked);
490     TLI.setAvailable(LibFunc_fputc_unlocked);
491     TLI.setAvailable(LibFunc_fgetc_unlocked);
492     TLI.setAvailable(LibFunc_fread_unlocked);
493     TLI.setAvailable(LibFunc_fwrite_unlocked);
494     TLI.setAvailable(LibFunc_fputs_unlocked);
495     TLI.setAvailable(LibFunc_fgets_unlocked);
496   }
497 
498   // As currently implemented in clang, NVPTX code has no standard library to
499   // speak of.  Headers provide a standard-ish library implementation, but many
500   // of the signatures are wrong -- for example, many libm functions are not
501   // extern "C".
502   //
503   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
504   // but only used functions are provided to llvm.  Moreover, most of the
505   // functions in libdevice don't map precisely to standard library functions.
506   //
507   // FIXME: Having no standard library prevents e.g. many fastmath
508   // optimizations, so this situation should be fixed.
509   if (T.isNVPTX()) {
510     TLI.disableAllFunctions();
511     TLI.setAvailable(LibFunc_nvvm_reflect);
512   } else {
513     TLI.setUnavailable(LibFunc_nvvm_reflect);
514   }
515 
516   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
517 }
518 
519 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
520   // Default to everything being available.
521   memset(AvailableArray, -1, sizeof(AvailableArray));
522 
523   initialize(*this, Triple(), StandardNames);
524 }
525 
526 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
527   // Default to everything being available.
528   memset(AvailableArray, -1, sizeof(AvailableArray));
529 
530   initialize(*this, T, StandardNames);
531 }
532 
533 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
534     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
535       ShouldExtI32Return(TLI.ShouldExtI32Return),
536       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
537   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
538   VectorDescs = TLI.VectorDescs;
539   ScalarDescs = TLI.ScalarDescs;
540 }
541 
542 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
543     : CustomNames(std::move(TLI.CustomNames)),
544       ShouldExtI32Param(TLI.ShouldExtI32Param),
545       ShouldExtI32Return(TLI.ShouldExtI32Return),
546       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
547   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
548             AvailableArray);
549   VectorDescs = TLI.VectorDescs;
550   ScalarDescs = TLI.ScalarDescs;
551 }
552 
553 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
554   CustomNames = TLI.CustomNames;
555   ShouldExtI32Param = TLI.ShouldExtI32Param;
556   ShouldExtI32Return = TLI.ShouldExtI32Return;
557   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
558   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
559   return *this;
560 }
561 
562 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
563   CustomNames = std::move(TLI.CustomNames);
564   ShouldExtI32Param = TLI.ShouldExtI32Param;
565   ShouldExtI32Return = TLI.ShouldExtI32Return;
566   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
567   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
568             AvailableArray);
569   return *this;
570 }
571 
572 static StringRef sanitizeFunctionName(StringRef funcName) {
573   // Filter out empty names and names containing null bytes, those can't be in
574   // our table.
575   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
576     return StringRef();
577 
578   // Check for \01 prefix that is used to mangle __asm declarations and
579   // strip it if present.
580   return GlobalValue::dropLLVMManglingEscape(funcName);
581 }
582 
583 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
584                                        LibFunc &F) const {
585   StringRef const *Start = &StandardNames[0];
586   StringRef const *End = &StandardNames[NumLibFuncs];
587 
588   funcName = sanitizeFunctionName(funcName);
589   if (funcName.empty())
590     return false;
591 
592   StringRef const *I = std::lower_bound(
593       Start, End, funcName, [](StringRef LHS, StringRef RHS) {
594         return LHS < RHS;
595       });
596   if (I != End && *I == funcName) {
597     F = (LibFunc)(I - Start);
598     return true;
599   }
600   return false;
601 }
602 
603 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
604                                                    LibFunc F,
605                                                    const DataLayout *DL) const {
606   LLVMContext &Ctx = FTy.getContext();
607   Type *PCharTy = Type::getInt8PtrTy(Ctx);
608   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
609   auto IsSizeTTy = [SizeTTy](Type *Ty) {
610     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
611   };
612   unsigned NumParams = FTy.getNumParams();
613 
614   switch (F) {
615   case LibFunc_execl:
616   case LibFunc_execlp:
617   case LibFunc_execle:
618     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
619             FTy.getParamType(1)->isPointerTy() &&
620             FTy.getReturnType()->isIntegerTy(32));
621   case LibFunc_execv:
622   case LibFunc_execvp:
623     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
624             FTy.getParamType(1)->isPointerTy() &&
625             FTy.getReturnType()->isIntegerTy(32));
626   case LibFunc_execvP:
627   case LibFunc_execvpe:
628   case LibFunc_execve:
629     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
630             FTy.getParamType(1)->isPointerTy() &&
631             FTy.getParamType(2)->isPointerTy() &&
632             FTy.getReturnType()->isIntegerTy(32));
633   case LibFunc_strlen:
634     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
635             FTy.getReturnType()->isIntegerTy());
636 
637   case LibFunc_strchr:
638   case LibFunc_strrchr:
639     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
640             FTy.getParamType(0) == FTy.getReturnType() &&
641             FTy.getParamType(1)->isIntegerTy());
642 
643   case LibFunc_strtol:
644   case LibFunc_strtod:
645   case LibFunc_strtof:
646   case LibFunc_strtoul:
647   case LibFunc_strtoll:
648   case LibFunc_strtold:
649   case LibFunc_strtoull:
650     return ((NumParams == 2 || NumParams == 3) &&
651             FTy.getParamType(0)->isPointerTy() &&
652             FTy.getParamType(1)->isPointerTy());
653   case LibFunc_strcat:
654     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
655             FTy.getParamType(0) == FTy.getReturnType() &&
656             FTy.getParamType(1) == FTy.getReturnType());
657 
658   case LibFunc_strncat:
659     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
660             FTy.getParamType(0) == FTy.getReturnType() &&
661             FTy.getParamType(1) == FTy.getReturnType() &&
662             IsSizeTTy(FTy.getParamType(2)));
663 
664   case LibFunc_strcpy_chk:
665   case LibFunc_stpcpy_chk:
666     --NumParams;
667     if (!IsSizeTTy(FTy.getParamType(NumParams)))
668       return false;
669     LLVM_FALLTHROUGH;
670   case LibFunc_strcpy:
671   case LibFunc_stpcpy:
672     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
673             FTy.getParamType(0) == FTy.getParamType(1) &&
674             FTy.getParamType(0) == PCharTy);
675 
676   case LibFunc_strncpy_chk:
677   case LibFunc_stpncpy_chk:
678     --NumParams;
679     if (!IsSizeTTy(FTy.getParamType(NumParams)))
680       return false;
681     LLVM_FALLTHROUGH;
682   case LibFunc_strncpy:
683   case LibFunc_stpncpy:
684     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
685             FTy.getParamType(0) == FTy.getParamType(1) &&
686             FTy.getParamType(0) == PCharTy &&
687             IsSizeTTy(FTy.getParamType(2)));
688 
689   case LibFunc_strxfrm:
690     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
691             FTy.getParamType(1)->isPointerTy());
692 
693   case LibFunc_strcmp:
694     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
695             FTy.getParamType(0)->isPointerTy() &&
696             FTy.getParamType(0) == FTy.getParamType(1));
697 
698   case LibFunc_strncmp:
699     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
700             FTy.getParamType(0)->isPointerTy() &&
701             FTy.getParamType(0) == FTy.getParamType(1) &&
702             IsSizeTTy(FTy.getParamType(2)));
703 
704   case LibFunc_strspn:
705   case LibFunc_strcspn:
706     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
707             FTy.getParamType(0) == FTy.getParamType(1) &&
708             FTy.getReturnType()->isIntegerTy());
709 
710   case LibFunc_strcoll:
711   case LibFunc_strcasecmp:
712   case LibFunc_strncasecmp:
713     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
714             FTy.getParamType(1)->isPointerTy());
715 
716   case LibFunc_strstr:
717     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
718             FTy.getParamType(0)->isPointerTy() &&
719             FTy.getParamType(1)->isPointerTy());
720 
721   case LibFunc_strpbrk:
722     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
723             FTy.getReturnType() == FTy.getParamType(0) &&
724             FTy.getParamType(0) == FTy.getParamType(1));
725 
726   case LibFunc_strtok:
727   case LibFunc_strtok_r:
728     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
729   case LibFunc_scanf:
730   case LibFunc_setbuf:
731   case LibFunc_setvbuf:
732     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
733   case LibFunc_strdup:
734   case LibFunc_strndup:
735     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
736             FTy.getParamType(0)->isPointerTy());
737   case LibFunc_sscanf:
738   case LibFunc_stat:
739   case LibFunc_statvfs:
740   case LibFunc_siprintf:
741   case LibFunc_sprintf:
742     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
743             FTy.getParamType(1)->isPointerTy() &&
744             FTy.getReturnType()->isIntegerTy(32));
745   case LibFunc_snprintf:
746     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
747             FTy.getParamType(2)->isPointerTy() &&
748             FTy.getReturnType()->isIntegerTy(32));
749   case LibFunc_setitimer:
750     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
751             FTy.getParamType(2)->isPointerTy());
752   case LibFunc_system:
753     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
754   case LibFunc_malloc:
755     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
756   case LibFunc_memcmp:
757     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
758             FTy.getParamType(0)->isPointerTy() &&
759             FTy.getParamType(1)->isPointerTy());
760 
761   case LibFunc_memchr:
762   case LibFunc_memrchr:
763     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
764             FTy.getReturnType() == FTy.getParamType(0) &&
765             FTy.getParamType(1)->isIntegerTy(32) &&
766             IsSizeTTy(FTy.getParamType(2)));
767   case LibFunc_modf:
768   case LibFunc_modff:
769   case LibFunc_modfl:
770     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
771 
772   case LibFunc_memcpy_chk:
773   case LibFunc_memmove_chk:
774     --NumParams;
775     if (!IsSizeTTy(FTy.getParamType(NumParams)))
776       return false;
777     LLVM_FALLTHROUGH;
778   case LibFunc_memcpy:
779   case LibFunc_mempcpy:
780   case LibFunc_memmove:
781     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
782             FTy.getParamType(0)->isPointerTy() &&
783             FTy.getParamType(1)->isPointerTy() &&
784             IsSizeTTy(FTy.getParamType(2)));
785 
786   case LibFunc_memset_chk:
787     --NumParams;
788     if (!IsSizeTTy(FTy.getParamType(NumParams)))
789       return false;
790     LLVM_FALLTHROUGH;
791   case LibFunc_memset:
792     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
793             FTy.getParamType(0)->isPointerTy() &&
794             FTy.getParamType(1)->isIntegerTy() &&
795             IsSizeTTy(FTy.getParamType(2)));
796 
797   case LibFunc_memccpy:
798     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
799   case LibFunc_memalign:
800     return (FTy.getReturnType()->isPointerTy());
801   case LibFunc_realloc:
802   case LibFunc_reallocf:
803     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
804             FTy.getParamType(0) == FTy.getReturnType() &&
805             IsSizeTTy(FTy.getParamType(1)));
806   case LibFunc_read:
807     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
808   case LibFunc_rewind:
809   case LibFunc_rmdir:
810   case LibFunc_remove:
811   case LibFunc_realpath:
812     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
813   case LibFunc_rename:
814     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
815             FTy.getParamType(1)->isPointerTy());
816   case LibFunc_readlink:
817     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
818             FTy.getParamType(1)->isPointerTy());
819   case LibFunc_write:
820     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
821   case LibFunc_bcopy:
822   case LibFunc_bcmp:
823     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
824             FTy.getParamType(1)->isPointerTy());
825   case LibFunc_bzero:
826     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
827   case LibFunc_calloc:
828     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
829 
830   case LibFunc_atof:
831   case LibFunc_atoi:
832   case LibFunc_atol:
833   case LibFunc_atoll:
834   case LibFunc_ferror:
835   case LibFunc_getenv:
836   case LibFunc_getpwnam:
837   case LibFunc_iprintf:
838   case LibFunc_pclose:
839   case LibFunc_perror:
840   case LibFunc_printf:
841   case LibFunc_puts:
842   case LibFunc_uname:
843   case LibFunc_under_IO_getc:
844   case LibFunc_unlink:
845   case LibFunc_unsetenv:
846     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
847 
848   case LibFunc_access:
849   case LibFunc_chmod:
850   case LibFunc_chown:
851   case LibFunc_clearerr:
852   case LibFunc_closedir:
853   case LibFunc_ctermid:
854   case LibFunc_fclose:
855   case LibFunc_feof:
856   case LibFunc_fflush:
857   case LibFunc_fgetc:
858   case LibFunc_fgetc_unlocked:
859   case LibFunc_fileno:
860   case LibFunc_flockfile:
861   case LibFunc_free:
862   case LibFunc_fseek:
863   case LibFunc_fseeko64:
864   case LibFunc_fseeko:
865   case LibFunc_fsetpos:
866   case LibFunc_ftell:
867   case LibFunc_ftello64:
868   case LibFunc_ftello:
869   case LibFunc_ftrylockfile:
870   case LibFunc_funlockfile:
871   case LibFunc_getc:
872   case LibFunc_getc_unlocked:
873   case LibFunc_getlogin_r:
874   case LibFunc_mkdir:
875   case LibFunc_mktime:
876   case LibFunc_times:
877     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
878 
879   case LibFunc_fopen:
880     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
881             FTy.getParamType(0)->isPointerTy() &&
882             FTy.getParamType(1)->isPointerTy());
883   case LibFunc_fork:
884     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
885   case LibFunc_fdopen:
886     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
887             FTy.getParamType(1)->isPointerTy());
888   case LibFunc_fputc:
889   case LibFunc_fputc_unlocked:
890   case LibFunc_fstat:
891   case LibFunc_frexp:
892   case LibFunc_frexpf:
893   case LibFunc_frexpl:
894   case LibFunc_fstatvfs:
895     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
896   case LibFunc_fgets:
897   case LibFunc_fgets_unlocked:
898     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
899             FTy.getParamType(2)->isPointerTy());
900   case LibFunc_fread:
901   case LibFunc_fread_unlocked:
902     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
903             FTy.getParamType(3)->isPointerTy());
904   case LibFunc_fwrite:
905   case LibFunc_fwrite_unlocked:
906     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
907             FTy.getParamType(0)->isPointerTy() &&
908             FTy.getParamType(1)->isIntegerTy() &&
909             FTy.getParamType(2)->isIntegerTy() &&
910             FTy.getParamType(3)->isPointerTy());
911   case LibFunc_fputs:
912   case LibFunc_fputs_unlocked:
913     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
914             FTy.getParamType(1)->isPointerTy());
915   case LibFunc_fscanf:
916   case LibFunc_fiprintf:
917   case LibFunc_fprintf:
918     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
919             FTy.getParamType(0)->isPointerTy() &&
920             FTy.getParamType(1)->isPointerTy());
921   case LibFunc_fgetpos:
922     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
923             FTy.getParamType(1)->isPointerTy());
924   case LibFunc_getchar:
925   case LibFunc_getchar_unlocked:
926     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
927   case LibFunc_gets:
928     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
929   case LibFunc_getitimer:
930     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
931   case LibFunc_ungetc:
932     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
933   case LibFunc_utime:
934   case LibFunc_utimes:
935     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
936             FTy.getParamType(1)->isPointerTy());
937   case LibFunc_putc:
938   case LibFunc_putc_unlocked:
939     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
940   case LibFunc_pread:
941   case LibFunc_pwrite:
942     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
943   case LibFunc_popen:
944     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
945             FTy.getParamType(0)->isPointerTy() &&
946             FTy.getParamType(1)->isPointerTy());
947   case LibFunc_vscanf:
948     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
949   case LibFunc_vsscanf:
950     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
951             FTy.getParamType(2)->isPointerTy());
952   case LibFunc_vfscanf:
953     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
954             FTy.getParamType(2)->isPointerTy());
955   case LibFunc_valloc:
956     return (FTy.getReturnType()->isPointerTy());
957   case LibFunc_vprintf:
958     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
959   case LibFunc_vfprintf:
960   case LibFunc_vsprintf:
961     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
962             FTy.getParamType(1)->isPointerTy());
963   case LibFunc_vsnprintf:
964     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
965             FTy.getParamType(2)->isPointerTy());
966   case LibFunc_open:
967     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
968   case LibFunc_opendir:
969     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
970             FTy.getParamType(0)->isPointerTy());
971   case LibFunc_tmpfile:
972     return (FTy.getReturnType()->isPointerTy());
973   case LibFunc_htonl:
974   case LibFunc_ntohl:
975     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
976             FTy.getReturnType() == FTy.getParamType(0));
977   case LibFunc_htons:
978   case LibFunc_ntohs:
979     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
980             FTy.getReturnType() == FTy.getParamType(0));
981   case LibFunc_lstat:
982     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
983             FTy.getParamType(1)->isPointerTy());
984   case LibFunc_lchown:
985     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
986   case LibFunc_qsort:
987     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
988   case LibFunc_dunder_strdup:
989   case LibFunc_dunder_strndup:
990     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
991             FTy.getParamType(0)->isPointerTy());
992   case LibFunc_dunder_strtok_r:
993     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
994   case LibFunc_under_IO_putc:
995     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
996   case LibFunc_dunder_isoc99_scanf:
997     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
998   case LibFunc_stat64:
999   case LibFunc_lstat64:
1000   case LibFunc_statvfs64:
1001     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1002             FTy.getParamType(1)->isPointerTy());
1003   case LibFunc_dunder_isoc99_sscanf:
1004     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1005             FTy.getParamType(1)->isPointerTy());
1006   case LibFunc_fopen64:
1007     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1008             FTy.getParamType(0)->isPointerTy() &&
1009             FTy.getParamType(1)->isPointerTy());
1010   case LibFunc_tmpfile64:
1011     return (FTy.getReturnType()->isPointerTy());
1012   case LibFunc_fstat64:
1013   case LibFunc_fstatvfs64:
1014     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1015   case LibFunc_open64:
1016     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1017   case LibFunc_gettimeofday:
1018     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1019             FTy.getParamType(1)->isPointerTy());
1020 
1021   // new(unsigned int);
1022   case LibFunc_Znwj:
1023   // new(unsigned long);
1024   case LibFunc_Znwm:
1025   // new[](unsigned int);
1026   case LibFunc_Znaj:
1027   // new[](unsigned long);
1028   case LibFunc_Znam:
1029   // new(unsigned int);
1030   case LibFunc_msvc_new_int:
1031   // new(unsigned long long);
1032   case LibFunc_msvc_new_longlong:
1033   // new[](unsigned int);
1034   case LibFunc_msvc_new_array_int:
1035   // new[](unsigned long long);
1036   case LibFunc_msvc_new_array_longlong:
1037     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1038 
1039   // new(unsigned int, nothrow);
1040   case LibFunc_ZnwjRKSt9nothrow_t:
1041   // new(unsigned long, nothrow);
1042   case LibFunc_ZnwmRKSt9nothrow_t:
1043   // new[](unsigned int, nothrow);
1044   case LibFunc_ZnajRKSt9nothrow_t:
1045   // new[](unsigned long, nothrow);
1046   case LibFunc_ZnamRKSt9nothrow_t:
1047   // new(unsigned int, nothrow);
1048   case LibFunc_msvc_new_int_nothrow:
1049   // new(unsigned long long, nothrow);
1050   case LibFunc_msvc_new_longlong_nothrow:
1051   // new[](unsigned int, nothrow);
1052   case LibFunc_msvc_new_array_int_nothrow:
1053   // new[](unsigned long long, nothrow);
1054   case LibFunc_msvc_new_array_longlong_nothrow:
1055   // new(unsigned int, align_val_t)
1056   case LibFunc_ZnwjSt11align_val_t:
1057   // new(unsigned long, align_val_t)
1058   case LibFunc_ZnwmSt11align_val_t:
1059   // new[](unsigned int, align_val_t)
1060   case LibFunc_ZnajSt11align_val_t:
1061   // new[](unsigned long, align_val_t)
1062   case LibFunc_ZnamSt11align_val_t:
1063     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1064 
1065   // new(unsigned int, align_val_t, nothrow)
1066   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1067   // new(unsigned long, align_val_t, nothrow)
1068   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1069   // new[](unsigned int, align_val_t, nothrow)
1070   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1071   // new[](unsigned long, align_val_t, nothrow)
1072   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1073     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1074 
1075   // void operator delete[](void*);
1076   case LibFunc_ZdaPv:
1077   // void operator delete(void*);
1078   case LibFunc_ZdlPv:
1079   // void operator delete[](void*);
1080   case LibFunc_msvc_delete_array_ptr32:
1081   // void operator delete[](void*);
1082   case LibFunc_msvc_delete_array_ptr64:
1083   // void operator delete(void*);
1084   case LibFunc_msvc_delete_ptr32:
1085   // void operator delete(void*);
1086   case LibFunc_msvc_delete_ptr64:
1087     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1088 
1089   // void operator delete[](void*, nothrow);
1090   case LibFunc_ZdaPvRKSt9nothrow_t:
1091   // void operator delete[](void*, unsigned int);
1092   case LibFunc_ZdaPvj:
1093   // void operator delete[](void*, unsigned long);
1094   case LibFunc_ZdaPvm:
1095   // void operator delete(void*, nothrow);
1096   case LibFunc_ZdlPvRKSt9nothrow_t:
1097   // void operator delete(void*, unsigned int);
1098   case LibFunc_ZdlPvj:
1099   // void operator delete(void*, unsigned long);
1100   case LibFunc_ZdlPvm:
1101   // void operator delete(void*, align_val_t)
1102   case LibFunc_ZdlPvSt11align_val_t:
1103   // void operator delete[](void*, align_val_t)
1104   case LibFunc_ZdaPvSt11align_val_t:
1105   // void operator delete[](void*, unsigned int);
1106   case LibFunc_msvc_delete_array_ptr32_int:
1107   // void operator delete[](void*, nothrow);
1108   case LibFunc_msvc_delete_array_ptr32_nothrow:
1109   // void operator delete[](void*, unsigned long long);
1110   case LibFunc_msvc_delete_array_ptr64_longlong:
1111   // void operator delete[](void*, nothrow);
1112   case LibFunc_msvc_delete_array_ptr64_nothrow:
1113   // void operator delete(void*, unsigned int);
1114   case LibFunc_msvc_delete_ptr32_int:
1115   // void operator delete(void*, nothrow);
1116   case LibFunc_msvc_delete_ptr32_nothrow:
1117   // void operator delete(void*, unsigned long long);
1118   case LibFunc_msvc_delete_ptr64_longlong:
1119   // void operator delete(void*, nothrow);
1120   case LibFunc_msvc_delete_ptr64_nothrow:
1121     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1122 
1123   // void operator delete(void*, align_val_t, nothrow)
1124   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1125   // void operator delete[](void*, align_val_t, nothrow)
1126   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1127     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1128 
1129   case LibFunc_memset_pattern16:
1130     return (!FTy.isVarArg() && NumParams == 3 &&
1131             FTy.getParamType(0)->isPointerTy() &&
1132             FTy.getParamType(1)->isPointerTy() &&
1133             FTy.getParamType(2)->isIntegerTy());
1134 
1135   case LibFunc_cxa_guard_abort:
1136   case LibFunc_cxa_guard_acquire:
1137   case LibFunc_cxa_guard_release:
1138   case LibFunc_nvvm_reflect:
1139     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1140 
1141   case LibFunc_sincospi_stret:
1142   case LibFunc_sincospif_stret:
1143     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1144 
1145   case LibFunc_acos:
1146   case LibFunc_acos_finite:
1147   case LibFunc_acosf:
1148   case LibFunc_acosf_finite:
1149   case LibFunc_acosh:
1150   case LibFunc_acosh_finite:
1151   case LibFunc_acoshf:
1152   case LibFunc_acoshf_finite:
1153   case LibFunc_acoshl:
1154   case LibFunc_acoshl_finite:
1155   case LibFunc_acosl:
1156   case LibFunc_acosl_finite:
1157   case LibFunc_asin:
1158   case LibFunc_asin_finite:
1159   case LibFunc_asinf:
1160   case LibFunc_asinf_finite:
1161   case LibFunc_asinh:
1162   case LibFunc_asinhf:
1163   case LibFunc_asinhl:
1164   case LibFunc_asinl:
1165   case LibFunc_asinl_finite:
1166   case LibFunc_atan:
1167   case LibFunc_atanf:
1168   case LibFunc_atanh:
1169   case LibFunc_atanh_finite:
1170   case LibFunc_atanhf:
1171   case LibFunc_atanhf_finite:
1172   case LibFunc_atanhl:
1173   case LibFunc_atanhl_finite:
1174   case LibFunc_atanl:
1175   case LibFunc_cbrt:
1176   case LibFunc_cbrtf:
1177   case LibFunc_cbrtl:
1178   case LibFunc_ceil:
1179   case LibFunc_ceilf:
1180   case LibFunc_ceill:
1181   case LibFunc_cos:
1182   case LibFunc_cosf:
1183   case LibFunc_cosh:
1184   case LibFunc_cosh_finite:
1185   case LibFunc_coshf:
1186   case LibFunc_coshf_finite:
1187   case LibFunc_coshl:
1188   case LibFunc_coshl_finite:
1189   case LibFunc_cosl:
1190   case LibFunc_exp10:
1191   case LibFunc_exp10_finite:
1192   case LibFunc_exp10f:
1193   case LibFunc_exp10f_finite:
1194   case LibFunc_exp10l:
1195   case LibFunc_exp10l_finite:
1196   case LibFunc_exp2:
1197   case LibFunc_exp2_finite:
1198   case LibFunc_exp2f:
1199   case LibFunc_exp2f_finite:
1200   case LibFunc_exp2l:
1201   case LibFunc_exp2l_finite:
1202   case LibFunc_exp:
1203   case LibFunc_exp_finite:
1204   case LibFunc_expf:
1205   case LibFunc_expf_finite:
1206   case LibFunc_expl:
1207   case LibFunc_expl_finite:
1208   case LibFunc_expm1:
1209   case LibFunc_expm1f:
1210   case LibFunc_expm1l:
1211   case LibFunc_fabs:
1212   case LibFunc_fabsf:
1213   case LibFunc_fabsl:
1214   case LibFunc_floor:
1215   case LibFunc_floorf:
1216   case LibFunc_floorl:
1217   case LibFunc_log10:
1218   case LibFunc_log10_finite:
1219   case LibFunc_log10f:
1220   case LibFunc_log10f_finite:
1221   case LibFunc_log10l:
1222   case LibFunc_log10l_finite:
1223   case LibFunc_log1p:
1224   case LibFunc_log1pf:
1225   case LibFunc_log1pl:
1226   case LibFunc_log2:
1227   case LibFunc_log2_finite:
1228   case LibFunc_log2f:
1229   case LibFunc_log2f_finite:
1230   case LibFunc_log2l:
1231   case LibFunc_log2l_finite:
1232   case LibFunc_log:
1233   case LibFunc_log_finite:
1234   case LibFunc_logb:
1235   case LibFunc_logbf:
1236   case LibFunc_logbl:
1237   case LibFunc_logf:
1238   case LibFunc_logf_finite:
1239   case LibFunc_logl:
1240   case LibFunc_logl_finite:
1241   case LibFunc_nearbyint:
1242   case LibFunc_nearbyintf:
1243   case LibFunc_nearbyintl:
1244   case LibFunc_rint:
1245   case LibFunc_rintf:
1246   case LibFunc_rintl:
1247   case LibFunc_round:
1248   case LibFunc_roundf:
1249   case LibFunc_roundl:
1250   case LibFunc_sin:
1251   case LibFunc_sinf:
1252   case LibFunc_sinh:
1253   case LibFunc_sinh_finite:
1254   case LibFunc_sinhf:
1255   case LibFunc_sinhf_finite:
1256   case LibFunc_sinhl:
1257   case LibFunc_sinhl_finite:
1258   case LibFunc_sinl:
1259   case LibFunc_sqrt:
1260   case LibFunc_sqrt_finite:
1261   case LibFunc_sqrtf:
1262   case LibFunc_sqrtf_finite:
1263   case LibFunc_sqrtl:
1264   case LibFunc_sqrtl_finite:
1265   case LibFunc_tan:
1266   case LibFunc_tanf:
1267   case LibFunc_tanh:
1268   case LibFunc_tanhf:
1269   case LibFunc_tanhl:
1270   case LibFunc_tanl:
1271   case LibFunc_trunc:
1272   case LibFunc_truncf:
1273   case LibFunc_truncl:
1274     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1275             FTy.getReturnType() == FTy.getParamType(0));
1276 
1277   case LibFunc_atan2:
1278   case LibFunc_atan2_finite:
1279   case LibFunc_atan2f:
1280   case LibFunc_atan2f_finite:
1281   case LibFunc_atan2l:
1282   case LibFunc_atan2l_finite:
1283   case LibFunc_fmin:
1284   case LibFunc_fminf:
1285   case LibFunc_fminl:
1286   case LibFunc_fmax:
1287   case LibFunc_fmaxf:
1288   case LibFunc_fmaxl:
1289   case LibFunc_fmod:
1290   case LibFunc_fmodf:
1291   case LibFunc_fmodl:
1292   case LibFunc_copysign:
1293   case LibFunc_copysignf:
1294   case LibFunc_copysignl:
1295   case LibFunc_pow:
1296   case LibFunc_pow_finite:
1297   case LibFunc_powf:
1298   case LibFunc_powf_finite:
1299   case LibFunc_powl:
1300   case LibFunc_powl_finite:
1301     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1302             FTy.getReturnType() == FTy.getParamType(0) &&
1303             FTy.getReturnType() == FTy.getParamType(1));
1304 
1305   case LibFunc_ldexp:
1306   case LibFunc_ldexpf:
1307   case LibFunc_ldexpl:
1308     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1309             FTy.getReturnType() == FTy.getParamType(0) &&
1310             FTy.getParamType(1)->isIntegerTy(32));
1311 
1312   case LibFunc_ffs:
1313   case LibFunc_ffsl:
1314   case LibFunc_ffsll:
1315   case LibFunc_fls:
1316   case LibFunc_flsl:
1317   case LibFunc_flsll:
1318     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1319             FTy.getParamType(0)->isIntegerTy());
1320 
1321   case LibFunc_isdigit:
1322   case LibFunc_isascii:
1323   case LibFunc_toascii:
1324   case LibFunc_putchar:
1325   case LibFunc_putchar_unlocked:
1326     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1327             FTy.getReturnType() == FTy.getParamType(0));
1328 
1329   case LibFunc_abs:
1330   case LibFunc_labs:
1331   case LibFunc_llabs:
1332     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1333             FTy.getReturnType() == FTy.getParamType(0));
1334 
1335   case LibFunc_cxa_atexit:
1336     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1337             FTy.getParamType(0)->isPointerTy() &&
1338             FTy.getParamType(1)->isPointerTy() &&
1339             FTy.getParamType(2)->isPointerTy());
1340 
1341   case LibFunc_sinpi:
1342   case LibFunc_cospi:
1343     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1344             FTy.getReturnType() == FTy.getParamType(0));
1345 
1346   case LibFunc_sinpif:
1347   case LibFunc_cospif:
1348     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1349             FTy.getReturnType() == FTy.getParamType(0));
1350 
1351   case LibFunc_strnlen:
1352     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1353             FTy.getParamType(0) == PCharTy &&
1354             FTy.getParamType(1) == SizeTTy);
1355 
1356   case LibFunc_posix_memalign:
1357     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1358             FTy.getParamType(0)->isPointerTy() &&
1359             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1360 
1361   case LibFunc_wcslen:
1362     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1363             FTy.getReturnType()->isIntegerTy());
1364 
1365   case LibFunc_cabs:
1366   case LibFunc_cabsf:
1367   case LibFunc_cabsl: {
1368     Type* RetTy = FTy.getReturnType();
1369     if (!RetTy->isFloatingPointTy())
1370       return false;
1371 
1372     // NOTE: These prototypes are target specific and currently support
1373     // "complex" passed as an array or discrete real & imaginary parameters.
1374     // Add other calling conventions to enable libcall optimizations.
1375     if (NumParams == 1)
1376       return (FTy.getParamType(0)->isArrayTy() &&
1377               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1378               FTy.getParamType(0)->getArrayElementType() == RetTy);
1379     else if (NumParams == 2)
1380       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1381     else
1382       return false;
1383   }
1384   case LibFunc::NumLibFuncs:
1385     break;
1386   }
1387 
1388   llvm_unreachable("Invalid libfunc");
1389 }
1390 
1391 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1392                                        LibFunc &F) const {
1393   const DataLayout *DL =
1394       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1395   return getLibFunc(FDecl.getName(), F) &&
1396          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1397 }
1398 
1399 void TargetLibraryInfoImpl::disableAllFunctions() {
1400   memset(AvailableArray, 0, sizeof(AvailableArray));
1401 }
1402 
1403 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1404   return LHS.ScalarFnName < RHS.ScalarFnName;
1405 }
1406 
1407 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1408   return LHS.VectorFnName < RHS.VectorFnName;
1409 }
1410 
1411 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1412   return LHS.ScalarFnName < S;
1413 }
1414 
1415 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1416   return LHS.VectorFnName < S;
1417 }
1418 
1419 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1420   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1421   llvm::sort(VectorDescs, compareByScalarFnName);
1422 
1423   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1424   llvm::sort(ScalarDescs, compareByVectorFnName);
1425 }
1426 
1427 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1428     enum VectorLibrary VecLib) {
1429   switch (VecLib) {
1430   case Accelerate: {
1431     const VecDesc VecFuncs[] = {
1432         // Floating-Point Arithmetic and Auxiliary Functions
1433         {"ceilf", "vceilf", 4},
1434         {"fabsf", "vfabsf", 4},
1435         {"llvm.fabs.f32", "vfabsf", 4},
1436         {"floorf", "vfloorf", 4},
1437         {"sqrtf", "vsqrtf", 4},
1438         {"llvm.sqrt.f32", "vsqrtf", 4},
1439 
1440         // Exponential and Logarithmic Functions
1441         {"expf", "vexpf", 4},
1442         {"llvm.exp.f32", "vexpf", 4},
1443         {"expm1f", "vexpm1f", 4},
1444         {"logf", "vlogf", 4},
1445         {"llvm.log.f32", "vlogf", 4},
1446         {"log1pf", "vlog1pf", 4},
1447         {"log10f", "vlog10f", 4},
1448         {"llvm.log10.f32", "vlog10f", 4},
1449         {"logbf", "vlogbf", 4},
1450 
1451         // Trigonometric Functions
1452         {"sinf", "vsinf", 4},
1453         {"llvm.sin.f32", "vsinf", 4},
1454         {"cosf", "vcosf", 4},
1455         {"llvm.cos.f32", "vcosf", 4},
1456         {"tanf", "vtanf", 4},
1457         {"asinf", "vasinf", 4},
1458         {"acosf", "vacosf", 4},
1459         {"atanf", "vatanf", 4},
1460 
1461         // Hyperbolic Functions
1462         {"sinhf", "vsinhf", 4},
1463         {"coshf", "vcoshf", 4},
1464         {"tanhf", "vtanhf", 4},
1465         {"asinhf", "vasinhf", 4},
1466         {"acoshf", "vacoshf", 4},
1467         {"atanhf", "vatanhf", 4},
1468     };
1469     addVectorizableFunctions(VecFuncs);
1470     break;
1471   }
1472   case SVML: {
1473     const VecDesc VecFuncs[] = {
1474         {"sin", "__svml_sin2", 2},
1475         {"sin", "__svml_sin4", 4},
1476         {"sin", "__svml_sin8", 8},
1477 
1478         {"sinf", "__svml_sinf4", 4},
1479         {"sinf", "__svml_sinf8", 8},
1480         {"sinf", "__svml_sinf16", 16},
1481 
1482         {"llvm.sin.f64", "__svml_sin2", 2},
1483         {"llvm.sin.f64", "__svml_sin4", 4},
1484         {"llvm.sin.f64", "__svml_sin8", 8},
1485 
1486         {"llvm.sin.f32", "__svml_sinf4", 4},
1487         {"llvm.sin.f32", "__svml_sinf8", 8},
1488         {"llvm.sin.f32", "__svml_sinf16", 16},
1489 
1490         {"cos", "__svml_cos2", 2},
1491         {"cos", "__svml_cos4", 4},
1492         {"cos", "__svml_cos8", 8},
1493 
1494         {"cosf", "__svml_cosf4", 4},
1495         {"cosf", "__svml_cosf8", 8},
1496         {"cosf", "__svml_cosf16", 16},
1497 
1498         {"llvm.cos.f64", "__svml_cos2", 2},
1499         {"llvm.cos.f64", "__svml_cos4", 4},
1500         {"llvm.cos.f64", "__svml_cos8", 8},
1501 
1502         {"llvm.cos.f32", "__svml_cosf4", 4},
1503         {"llvm.cos.f32", "__svml_cosf8", 8},
1504         {"llvm.cos.f32", "__svml_cosf16", 16},
1505 
1506         {"pow", "__svml_pow2", 2},
1507         {"pow", "__svml_pow4", 4},
1508         {"pow", "__svml_pow8", 8},
1509 
1510         {"powf", "__svml_powf4", 4},
1511         {"powf", "__svml_powf8", 8},
1512         {"powf", "__svml_powf16", 16},
1513 
1514         { "__pow_finite", "__svml_pow2", 2 },
1515         { "__pow_finite", "__svml_pow4", 4 },
1516         { "__pow_finite", "__svml_pow8", 8 },
1517 
1518         { "__powf_finite", "__svml_powf4", 4 },
1519         { "__powf_finite", "__svml_powf8", 8 },
1520         { "__powf_finite", "__svml_powf16", 16 },
1521 
1522         {"llvm.pow.f64", "__svml_pow2", 2},
1523         {"llvm.pow.f64", "__svml_pow4", 4},
1524         {"llvm.pow.f64", "__svml_pow8", 8},
1525 
1526         {"llvm.pow.f32", "__svml_powf4", 4},
1527         {"llvm.pow.f32", "__svml_powf8", 8},
1528         {"llvm.pow.f32", "__svml_powf16", 16},
1529 
1530         {"exp", "__svml_exp2", 2},
1531         {"exp", "__svml_exp4", 4},
1532         {"exp", "__svml_exp8", 8},
1533 
1534         {"expf", "__svml_expf4", 4},
1535         {"expf", "__svml_expf8", 8},
1536         {"expf", "__svml_expf16", 16},
1537 
1538         { "__exp_finite", "__svml_exp2", 2 },
1539         { "__exp_finite", "__svml_exp4", 4 },
1540         { "__exp_finite", "__svml_exp8", 8 },
1541 
1542         { "__expf_finite", "__svml_expf4", 4 },
1543         { "__expf_finite", "__svml_expf8", 8 },
1544         { "__expf_finite", "__svml_expf16", 16 },
1545 
1546         {"llvm.exp.f64", "__svml_exp2", 2},
1547         {"llvm.exp.f64", "__svml_exp4", 4},
1548         {"llvm.exp.f64", "__svml_exp8", 8},
1549 
1550         {"llvm.exp.f32", "__svml_expf4", 4},
1551         {"llvm.exp.f32", "__svml_expf8", 8},
1552         {"llvm.exp.f32", "__svml_expf16", 16},
1553 
1554         {"log", "__svml_log2", 2},
1555         {"log", "__svml_log4", 4},
1556         {"log", "__svml_log8", 8},
1557 
1558         {"logf", "__svml_logf4", 4},
1559         {"logf", "__svml_logf8", 8},
1560         {"logf", "__svml_logf16", 16},
1561 
1562         { "__log_finite", "__svml_log2", 2 },
1563         { "__log_finite", "__svml_log4", 4 },
1564         { "__log_finite", "__svml_log8", 8 },
1565 
1566         { "__logf_finite", "__svml_logf4", 4 },
1567         { "__logf_finite", "__svml_logf8", 8 },
1568         { "__logf_finite", "__svml_logf16", 16 },
1569 
1570         {"llvm.log.f64", "__svml_log2", 2},
1571         {"llvm.log.f64", "__svml_log4", 4},
1572         {"llvm.log.f64", "__svml_log8", 8},
1573 
1574         {"llvm.log.f32", "__svml_logf4", 4},
1575         {"llvm.log.f32", "__svml_logf8", 8},
1576         {"llvm.log.f32", "__svml_logf16", 16},
1577     };
1578     addVectorizableFunctions(VecFuncs);
1579     break;
1580   }
1581   case NoLibrary:
1582     break;
1583   }
1584 }
1585 
1586 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1587   funcName = sanitizeFunctionName(funcName);
1588   if (funcName.empty())
1589     return false;
1590 
1591   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1592       VectorDescs.begin(), VectorDescs.end(), funcName,
1593       compareWithScalarFnName);
1594   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1595 }
1596 
1597 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1598                                                        unsigned VF) const {
1599   F = sanitizeFunctionName(F);
1600   if (F.empty())
1601     return F;
1602   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1603       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
1604   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1605     if (I->VectorizationFactor == VF)
1606       return I->VectorFnName;
1607     ++I;
1608   }
1609   return StringRef();
1610 }
1611 
1612 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1613                                                        unsigned &VF) const {
1614   F = sanitizeFunctionName(F);
1615   if (F.empty())
1616     return F;
1617 
1618   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1619       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
1620   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1621     return StringRef();
1622   VF = I->VectorizationFactor;
1623   return I->ScalarFnName;
1624 }
1625 
1626 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M,
1627                                              ModuleAnalysisManager &) {
1628   if (PresetInfoImpl)
1629     return TargetLibraryInfo(*PresetInfoImpl);
1630 
1631   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
1632 }
1633 
1634 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1635                                              FunctionAnalysisManager &) {
1636   if (PresetInfoImpl)
1637     return TargetLibraryInfo(*PresetInfoImpl);
1638 
1639   return TargetLibraryInfo(
1640       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1641 }
1642 
1643 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1644   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1645       Impls[T.normalize()];
1646   if (!Impl)
1647     Impl.reset(new TargetLibraryInfoImpl(T));
1648 
1649   return *Impl;
1650 }
1651 
1652 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1653   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1654       M.getModuleFlag("wchar_size")))
1655     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1656   return 0;
1657 }
1658 
1659 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1660     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1661   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1662 }
1663 
1664 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1665     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1666   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1667 }
1668 
1669 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1670     const TargetLibraryInfoImpl &TLIImpl)
1671     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1672   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1673 }
1674 
1675 AnalysisKey TargetLibraryAnalysis::Key;
1676 
1677 // Register the basic pass.
1678 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1679                 "Target Library Information", false, true)
1680 char TargetLibraryInfoWrapperPass::ID = 0;
1681 
1682 void TargetLibraryInfoWrapperPass::anchor() {}
1683