xref: /freebsd/contrib/llvm-project/llvm/lib/Analysis/TargetLibraryInfo.cpp (revision 0b37c1590418417c894529d371800dfac71ef887) 
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     TLI.setUnavailable(LibFunc_acos_finite);
474     TLI.setUnavailable(LibFunc_acosf_finite);
475     TLI.setUnavailable(LibFunc_acosl_finite);
476     TLI.setUnavailable(LibFunc_acosh_finite);
477     TLI.setUnavailable(LibFunc_acoshf_finite);
478     TLI.setUnavailable(LibFunc_acoshl_finite);
479     TLI.setUnavailable(LibFunc_asin_finite);
480     TLI.setUnavailable(LibFunc_asinf_finite);
481     TLI.setUnavailable(LibFunc_asinl_finite);
482     TLI.setUnavailable(LibFunc_atan2_finite);
483     TLI.setUnavailable(LibFunc_atan2f_finite);
484     TLI.setUnavailable(LibFunc_atan2l_finite);
485     TLI.setUnavailable(LibFunc_atanh_finite);
486     TLI.setUnavailable(LibFunc_atanhf_finite);
487     TLI.setUnavailable(LibFunc_atanhl_finite);
488     TLI.setUnavailable(LibFunc_cosh_finite);
489     TLI.setUnavailable(LibFunc_coshf_finite);
490     TLI.setUnavailable(LibFunc_coshl_finite);
491     TLI.setUnavailable(LibFunc_exp10_finite);
492     TLI.setUnavailable(LibFunc_exp10f_finite);
493     TLI.setUnavailable(LibFunc_exp10l_finite);
494     TLI.setUnavailable(LibFunc_exp2_finite);
495     TLI.setUnavailable(LibFunc_exp2f_finite);
496     TLI.setUnavailable(LibFunc_exp2l_finite);
497     TLI.setUnavailable(LibFunc_exp_finite);
498     TLI.setUnavailable(LibFunc_expf_finite);
499     TLI.setUnavailable(LibFunc_expl_finite);
500     TLI.setUnavailable(LibFunc_log10_finite);
501     TLI.setUnavailable(LibFunc_log10f_finite);
502     TLI.setUnavailable(LibFunc_log10l_finite);
503     TLI.setUnavailable(LibFunc_log2_finite);
504     TLI.setUnavailable(LibFunc_log2f_finite);
505     TLI.setUnavailable(LibFunc_log2l_finite);
506     TLI.setUnavailable(LibFunc_log_finite);
507     TLI.setUnavailable(LibFunc_logf_finite);
508     TLI.setUnavailable(LibFunc_logl_finite);
509     TLI.setUnavailable(LibFunc_pow_finite);
510     TLI.setUnavailable(LibFunc_powf_finite);
511     TLI.setUnavailable(LibFunc_powl_finite);
512     TLI.setUnavailable(LibFunc_sinh_finite);
513     TLI.setUnavailable(LibFunc_sinhf_finite);
514     TLI.setUnavailable(LibFunc_sinhl_finite);
515   }
516 
517   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
518       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
519     // available IO unlocked variants on GNU/Linux and Android P or later
520     TLI.setAvailable(LibFunc_getc_unlocked);
521     TLI.setAvailable(LibFunc_getchar_unlocked);
522     TLI.setAvailable(LibFunc_putc_unlocked);
523     TLI.setAvailable(LibFunc_putchar_unlocked);
524     TLI.setAvailable(LibFunc_fputc_unlocked);
525     TLI.setAvailable(LibFunc_fgetc_unlocked);
526     TLI.setAvailable(LibFunc_fread_unlocked);
527     TLI.setAvailable(LibFunc_fwrite_unlocked);
528     TLI.setAvailable(LibFunc_fputs_unlocked);
529     TLI.setAvailable(LibFunc_fgets_unlocked);
530   }
531 
532   // As currently implemented in clang, NVPTX code has no standard library to
533   // speak of.  Headers provide a standard-ish library implementation, but many
534   // of the signatures are wrong -- for example, many libm functions are not
535   // extern "C".
536   //
537   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
538   // but only used functions are provided to llvm.  Moreover, most of the
539   // functions in libdevice don't map precisely to standard library functions.
540   //
541   // FIXME: Having no standard library prevents e.g. many fastmath
542   // optimizations, so this situation should be fixed.
543   if (T.isNVPTX()) {
544     TLI.disableAllFunctions();
545     TLI.setAvailable(LibFunc_nvvm_reflect);
546   } else {
547     TLI.setUnavailable(LibFunc_nvvm_reflect);
548   }
549 
550   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
551 }
552 
553 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
554   // Default to everything being available.
555   memset(AvailableArray, -1, sizeof(AvailableArray));
556 
557   initialize(*this, Triple(), StandardNames);
558 }
559 
560 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
561   // Default to everything being available.
562   memset(AvailableArray, -1, sizeof(AvailableArray));
563 
564   initialize(*this, T, StandardNames);
565 }
566 
567 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
568     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
569       ShouldExtI32Return(TLI.ShouldExtI32Return),
570       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
571   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
572   VectorDescs = TLI.VectorDescs;
573   ScalarDescs = TLI.ScalarDescs;
574 }
575 
576 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
577     : CustomNames(std::move(TLI.CustomNames)),
578       ShouldExtI32Param(TLI.ShouldExtI32Param),
579       ShouldExtI32Return(TLI.ShouldExtI32Return),
580       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
581   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
582             AvailableArray);
583   VectorDescs = TLI.VectorDescs;
584   ScalarDescs = TLI.ScalarDescs;
585 }
586 
587 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
588   CustomNames = TLI.CustomNames;
589   ShouldExtI32Param = TLI.ShouldExtI32Param;
590   ShouldExtI32Return = TLI.ShouldExtI32Return;
591   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
592   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
593   return *this;
594 }
595 
596 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
597   CustomNames = std::move(TLI.CustomNames);
598   ShouldExtI32Param = TLI.ShouldExtI32Param;
599   ShouldExtI32Return = TLI.ShouldExtI32Return;
600   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
601   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
602             AvailableArray);
603   return *this;
604 }
605 
606 static StringRef sanitizeFunctionName(StringRef funcName) {
607   // Filter out empty names and names containing null bytes, those can't be in
608   // our table.
609   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
610     return StringRef();
611 
612   // Check for \01 prefix that is used to mangle __asm declarations and
613   // strip it if present.
614   return GlobalValue::dropLLVMManglingEscape(funcName);
615 }
616 
617 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
618   funcName = sanitizeFunctionName(funcName);
619   if (funcName.empty())
620     return false;
621 
622   const auto *Start = std::begin(StandardNames);
623   const auto *End = std::end(StandardNames);
624   const auto *I = std::lower_bound(Start, End, funcName);
625   if (I != End && *I == funcName) {
626     F = (LibFunc)(I - Start);
627     return true;
628   }
629   return false;
630 }
631 
632 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
633                                                    LibFunc F,
634                                                    const DataLayout *DL) const {
635   LLVMContext &Ctx = FTy.getContext();
636   Type *PCharTy = Type::getInt8PtrTy(Ctx);
637   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
638   auto IsSizeTTy = [SizeTTy](Type *Ty) {
639     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
640   };
641   unsigned NumParams = FTy.getNumParams();
642 
643   switch (F) {
644   case LibFunc_execl:
645   case LibFunc_execlp:
646   case LibFunc_execle:
647     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
648             FTy.getParamType(1)->isPointerTy() &&
649             FTy.getReturnType()->isIntegerTy(32));
650   case LibFunc_execv:
651   case LibFunc_execvp:
652     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
653             FTy.getParamType(1)->isPointerTy() &&
654             FTy.getReturnType()->isIntegerTy(32));
655   case LibFunc_execvP:
656   case LibFunc_execvpe:
657   case LibFunc_execve:
658     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
659             FTy.getParamType(1)->isPointerTy() &&
660             FTy.getParamType(2)->isPointerTy() &&
661             FTy.getReturnType()->isIntegerTy(32));
662   case LibFunc_strlen:
663     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
664             FTy.getReturnType()->isIntegerTy());
665 
666   case LibFunc_strchr:
667   case LibFunc_strrchr:
668     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
669             FTy.getParamType(0) == FTy.getReturnType() &&
670             FTy.getParamType(1)->isIntegerTy());
671 
672   case LibFunc_strtol:
673   case LibFunc_strtod:
674   case LibFunc_strtof:
675   case LibFunc_strtoul:
676   case LibFunc_strtoll:
677   case LibFunc_strtold:
678   case LibFunc_strtoull:
679     return ((NumParams == 2 || NumParams == 3) &&
680             FTy.getParamType(0)->isPointerTy() &&
681             FTy.getParamType(1)->isPointerTy());
682   case LibFunc_strcat_chk:
683     --NumParams;
684     if (!IsSizeTTy(FTy.getParamType(NumParams)))
685       return false;
686     LLVM_FALLTHROUGH;
687   case LibFunc_strcat:
688     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
689             FTy.getParamType(0) == FTy.getReturnType() &&
690             FTy.getParamType(1) == FTy.getReturnType());
691 
692   case LibFunc_strncat_chk:
693     --NumParams;
694     if (!IsSizeTTy(FTy.getParamType(NumParams)))
695       return false;
696     LLVM_FALLTHROUGH;
697   case LibFunc_strncat:
698     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
699             FTy.getParamType(0) == FTy.getReturnType() &&
700             FTy.getParamType(1) == FTy.getReturnType() &&
701             IsSizeTTy(FTy.getParamType(2)));
702 
703   case LibFunc_strcpy_chk:
704   case LibFunc_stpcpy_chk:
705     --NumParams;
706     if (!IsSizeTTy(FTy.getParamType(NumParams)))
707       return false;
708     LLVM_FALLTHROUGH;
709   case LibFunc_strcpy:
710   case LibFunc_stpcpy:
711     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
712             FTy.getParamType(0) == FTy.getParamType(1) &&
713             FTy.getParamType(0) == PCharTy);
714 
715   case LibFunc_strlcat_chk:
716   case LibFunc_strlcpy_chk:
717     --NumParams;
718     if (!IsSizeTTy(FTy.getParamType(NumParams)))
719       return false;
720     LLVM_FALLTHROUGH;
721   case LibFunc_strlcat:
722   case LibFunc_strlcpy:
723     return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
724            FTy.getParamType(0)->isPointerTy() &&
725            FTy.getParamType(1)->isPointerTy() &&
726            IsSizeTTy(FTy.getParamType(2));
727 
728   case LibFunc_strncpy_chk:
729   case LibFunc_stpncpy_chk:
730     --NumParams;
731     if (!IsSizeTTy(FTy.getParamType(NumParams)))
732       return false;
733     LLVM_FALLTHROUGH;
734   case LibFunc_strncpy:
735   case LibFunc_stpncpy:
736     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
737             FTy.getParamType(0) == FTy.getParamType(1) &&
738             FTy.getParamType(0) == PCharTy &&
739             IsSizeTTy(FTy.getParamType(2)));
740 
741   case LibFunc_strxfrm:
742     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
743             FTy.getParamType(1)->isPointerTy());
744 
745   case LibFunc_strcmp:
746     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
747             FTy.getParamType(0)->isPointerTy() &&
748             FTy.getParamType(0) == FTy.getParamType(1));
749 
750   case LibFunc_strncmp:
751     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
752             FTy.getParamType(0)->isPointerTy() &&
753             FTy.getParamType(0) == FTy.getParamType(1) &&
754             IsSizeTTy(FTy.getParamType(2)));
755 
756   case LibFunc_strspn:
757   case LibFunc_strcspn:
758     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
759             FTy.getParamType(0) == FTy.getParamType(1) &&
760             FTy.getReturnType()->isIntegerTy());
761 
762   case LibFunc_strcoll:
763   case LibFunc_strcasecmp:
764   case LibFunc_strncasecmp:
765     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
766             FTy.getParamType(1)->isPointerTy());
767 
768   case LibFunc_strstr:
769     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
770             FTy.getParamType(0)->isPointerTy() &&
771             FTy.getParamType(1)->isPointerTy());
772 
773   case LibFunc_strpbrk:
774     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
775             FTy.getReturnType() == FTy.getParamType(0) &&
776             FTy.getParamType(0) == FTy.getParamType(1));
777 
778   case LibFunc_strtok:
779   case LibFunc_strtok_r:
780     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
781   case LibFunc_scanf:
782   case LibFunc_setbuf:
783   case LibFunc_setvbuf:
784     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
785   case LibFunc_strdup:
786   case LibFunc_strndup:
787     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
788             FTy.getParamType(0)->isPointerTy());
789   case LibFunc_sscanf:
790   case LibFunc_stat:
791   case LibFunc_statvfs:
792   case LibFunc_siprintf:
793   case LibFunc_small_sprintf:
794   case LibFunc_sprintf:
795     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
796             FTy.getParamType(1)->isPointerTy() &&
797             FTy.getReturnType()->isIntegerTy(32));
798 
799   case LibFunc_sprintf_chk:
800     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
801            FTy.getParamType(1)->isIntegerTy(32) &&
802            IsSizeTTy(FTy.getParamType(2)) &&
803            FTy.getParamType(3)->isPointerTy() &&
804            FTy.getReturnType()->isIntegerTy(32);
805 
806   case LibFunc_snprintf:
807     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
808             FTy.getParamType(2)->isPointerTy() &&
809             FTy.getReturnType()->isIntegerTy(32));
810 
811   case LibFunc_snprintf_chk:
812     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
813            IsSizeTTy(FTy.getParamType(1)) &&
814            FTy.getParamType(2)->isIntegerTy(32) &&
815            IsSizeTTy(FTy.getParamType(3)) &&
816            FTy.getParamType(4)->isPointerTy() &&
817            FTy.getReturnType()->isIntegerTy(32);
818 
819   case LibFunc_setitimer:
820     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
821             FTy.getParamType(2)->isPointerTy());
822   case LibFunc_system:
823     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
824   case LibFunc_malloc:
825     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
826   case LibFunc_memcmp:
827     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
828             FTy.getParamType(0)->isPointerTy() &&
829             FTy.getParamType(1)->isPointerTy());
830 
831   case LibFunc_memchr:
832   case LibFunc_memrchr:
833     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
834             FTy.getReturnType() == FTy.getParamType(0) &&
835             FTy.getParamType(1)->isIntegerTy(32) &&
836             IsSizeTTy(FTy.getParamType(2)));
837   case LibFunc_modf:
838   case LibFunc_modff:
839   case LibFunc_modfl:
840     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
841 
842   case LibFunc_memcpy_chk:
843   case LibFunc_memmove_chk:
844     --NumParams;
845     if (!IsSizeTTy(FTy.getParamType(NumParams)))
846       return false;
847     LLVM_FALLTHROUGH;
848   case LibFunc_memcpy:
849   case LibFunc_mempcpy:
850   case LibFunc_memmove:
851     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
852             FTy.getParamType(0)->isPointerTy() &&
853             FTy.getParamType(1)->isPointerTy() &&
854             IsSizeTTy(FTy.getParamType(2)));
855 
856   case LibFunc_memset_chk:
857     --NumParams;
858     if (!IsSizeTTy(FTy.getParamType(NumParams)))
859       return false;
860     LLVM_FALLTHROUGH;
861   case LibFunc_memset:
862     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
863             FTy.getParamType(0)->isPointerTy() &&
864             FTy.getParamType(1)->isIntegerTy() &&
865             IsSizeTTy(FTy.getParamType(2)));
866 
867   case LibFunc_memccpy_chk:
868       --NumParams;
869     if (!IsSizeTTy(FTy.getParamType(NumParams)))
870       return false;
871     LLVM_FALLTHROUGH;
872   case LibFunc_memccpy:
873     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
874   case LibFunc_memalign:
875     return (FTy.getReturnType()->isPointerTy());
876   case LibFunc_realloc:
877   case LibFunc_reallocf:
878     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
879             FTy.getParamType(0) == FTy.getReturnType() &&
880             IsSizeTTy(FTy.getParamType(1)));
881   case LibFunc_read:
882     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
883   case LibFunc_rewind:
884   case LibFunc_rmdir:
885   case LibFunc_remove:
886   case LibFunc_realpath:
887     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
888   case LibFunc_rename:
889     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
890             FTy.getParamType(1)->isPointerTy());
891   case LibFunc_readlink:
892     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
893             FTy.getParamType(1)->isPointerTy());
894   case LibFunc_write:
895     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
896   case LibFunc_bcopy:
897   case LibFunc_bcmp:
898     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
899             FTy.getParamType(1)->isPointerTy());
900   case LibFunc_bzero:
901     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
902   case LibFunc_calloc:
903     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
904 
905   case LibFunc_atof:
906   case LibFunc_atoi:
907   case LibFunc_atol:
908   case LibFunc_atoll:
909   case LibFunc_ferror:
910   case LibFunc_getenv:
911   case LibFunc_getpwnam:
912   case LibFunc_iprintf:
913   case LibFunc_small_printf:
914   case LibFunc_pclose:
915   case LibFunc_perror:
916   case LibFunc_printf:
917   case LibFunc_puts:
918   case LibFunc_uname:
919   case LibFunc_under_IO_getc:
920   case LibFunc_unlink:
921   case LibFunc_unsetenv:
922     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
923 
924   case LibFunc_access:
925   case LibFunc_chmod:
926   case LibFunc_chown:
927   case LibFunc_clearerr:
928   case LibFunc_closedir:
929   case LibFunc_ctermid:
930   case LibFunc_fclose:
931   case LibFunc_feof:
932   case LibFunc_fflush:
933   case LibFunc_fgetc:
934   case LibFunc_fgetc_unlocked:
935   case LibFunc_fileno:
936   case LibFunc_flockfile:
937   case LibFunc_free:
938   case LibFunc_fseek:
939   case LibFunc_fseeko64:
940   case LibFunc_fseeko:
941   case LibFunc_fsetpos:
942   case LibFunc_ftell:
943   case LibFunc_ftello64:
944   case LibFunc_ftello:
945   case LibFunc_ftrylockfile:
946   case LibFunc_funlockfile:
947   case LibFunc_getc:
948   case LibFunc_getc_unlocked:
949   case LibFunc_getlogin_r:
950   case LibFunc_mkdir:
951   case LibFunc_mktime:
952   case LibFunc_times:
953     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
954 
955   case LibFunc_fopen:
956     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
957             FTy.getParamType(0)->isPointerTy() &&
958             FTy.getParamType(1)->isPointerTy());
959   case LibFunc_fork:
960     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
961   case LibFunc_fdopen:
962     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
963             FTy.getParamType(1)->isPointerTy());
964   case LibFunc_fputc:
965   case LibFunc_fputc_unlocked:
966   case LibFunc_fstat:
967   case LibFunc_frexp:
968   case LibFunc_frexpf:
969   case LibFunc_frexpl:
970   case LibFunc_fstatvfs:
971     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
972   case LibFunc_fgets:
973   case LibFunc_fgets_unlocked:
974     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
975             FTy.getParamType(2)->isPointerTy());
976   case LibFunc_fread:
977   case LibFunc_fread_unlocked:
978     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
979             FTy.getParamType(3)->isPointerTy());
980   case LibFunc_fwrite:
981   case LibFunc_fwrite_unlocked:
982     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
983             FTy.getParamType(0)->isPointerTy() &&
984             FTy.getParamType(1)->isIntegerTy() &&
985             FTy.getParamType(2)->isIntegerTy() &&
986             FTy.getParamType(3)->isPointerTy());
987   case LibFunc_fputs:
988   case LibFunc_fputs_unlocked:
989     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
990             FTy.getParamType(1)->isPointerTy());
991   case LibFunc_fscanf:
992   case LibFunc_fiprintf:
993   case LibFunc_small_fprintf:
994   case LibFunc_fprintf:
995     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
996             FTy.getParamType(0)->isPointerTy() &&
997             FTy.getParamType(1)->isPointerTy());
998   case LibFunc_fgetpos:
999     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1000             FTy.getParamType(1)->isPointerTy());
1001   case LibFunc_getchar:
1002   case LibFunc_getchar_unlocked:
1003     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1004   case LibFunc_gets:
1005     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1006   case LibFunc_getitimer:
1007     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1008   case LibFunc_ungetc:
1009     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1010   case LibFunc_utime:
1011   case LibFunc_utimes:
1012     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1013             FTy.getParamType(1)->isPointerTy());
1014   case LibFunc_putc:
1015   case LibFunc_putc_unlocked:
1016     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1017   case LibFunc_pread:
1018   case LibFunc_pwrite:
1019     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1020   case LibFunc_popen:
1021     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1022             FTy.getParamType(0)->isPointerTy() &&
1023             FTy.getParamType(1)->isPointerTy());
1024   case LibFunc_vscanf:
1025     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1026   case LibFunc_vsscanf:
1027     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1028             FTy.getParamType(2)->isPointerTy());
1029   case LibFunc_vfscanf:
1030     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1031             FTy.getParamType(2)->isPointerTy());
1032   case LibFunc_valloc:
1033     return (FTy.getReturnType()->isPointerTy());
1034   case LibFunc_vprintf:
1035     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1036   case LibFunc_vfprintf:
1037   case LibFunc_vsprintf:
1038     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1039             FTy.getParamType(1)->isPointerTy());
1040   case LibFunc_vsprintf_chk:
1041     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1042            FTy.getParamType(1)->isIntegerTy(32) &&
1043            IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1044   case LibFunc_vsnprintf:
1045     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1046             FTy.getParamType(2)->isPointerTy());
1047   case LibFunc_vsnprintf_chk:
1048     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1049            FTy.getParamType(2)->isIntegerTy(32) &&
1050            IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1051   case LibFunc_open:
1052     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1053   case LibFunc_opendir:
1054     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1055             FTy.getParamType(0)->isPointerTy());
1056   case LibFunc_tmpfile:
1057     return (FTy.getReturnType()->isPointerTy());
1058   case LibFunc_htonl:
1059   case LibFunc_ntohl:
1060     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1061             FTy.getReturnType() == FTy.getParamType(0));
1062   case LibFunc_htons:
1063   case LibFunc_ntohs:
1064     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1065             FTy.getReturnType() == FTy.getParamType(0));
1066   case LibFunc_lstat:
1067     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1068             FTy.getParamType(1)->isPointerTy());
1069   case LibFunc_lchown:
1070     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1071   case LibFunc_qsort:
1072     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1073   case LibFunc_dunder_strdup:
1074   case LibFunc_dunder_strndup:
1075     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1076             FTy.getParamType(0)->isPointerTy());
1077   case LibFunc_dunder_strtok_r:
1078     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1079   case LibFunc_under_IO_putc:
1080     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1081   case LibFunc_dunder_isoc99_scanf:
1082     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1083   case LibFunc_stat64:
1084   case LibFunc_lstat64:
1085   case LibFunc_statvfs64:
1086     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1087             FTy.getParamType(1)->isPointerTy());
1088   case LibFunc_dunder_isoc99_sscanf:
1089     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1090             FTy.getParamType(1)->isPointerTy());
1091   case LibFunc_fopen64:
1092     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1093             FTy.getParamType(0)->isPointerTy() &&
1094             FTy.getParamType(1)->isPointerTy());
1095   case LibFunc_tmpfile64:
1096     return (FTy.getReturnType()->isPointerTy());
1097   case LibFunc_fstat64:
1098   case LibFunc_fstatvfs64:
1099     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1100   case LibFunc_open64:
1101     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1102   case LibFunc_gettimeofday:
1103     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1104             FTy.getParamType(1)->isPointerTy());
1105 
1106   // new(unsigned int);
1107   case LibFunc_Znwj:
1108   // new(unsigned long);
1109   case LibFunc_Znwm:
1110   // new[](unsigned int);
1111   case LibFunc_Znaj:
1112   // new[](unsigned long);
1113   case LibFunc_Znam:
1114   // new(unsigned int);
1115   case LibFunc_msvc_new_int:
1116   // new(unsigned long long);
1117   case LibFunc_msvc_new_longlong:
1118   // new[](unsigned int);
1119   case LibFunc_msvc_new_array_int:
1120   // new[](unsigned long long);
1121   case LibFunc_msvc_new_array_longlong:
1122     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1123 
1124   // new(unsigned int, nothrow);
1125   case LibFunc_ZnwjRKSt9nothrow_t:
1126   // new(unsigned long, nothrow);
1127   case LibFunc_ZnwmRKSt9nothrow_t:
1128   // new[](unsigned int, nothrow);
1129   case LibFunc_ZnajRKSt9nothrow_t:
1130   // new[](unsigned long, nothrow);
1131   case LibFunc_ZnamRKSt9nothrow_t:
1132   // new(unsigned int, nothrow);
1133   case LibFunc_msvc_new_int_nothrow:
1134   // new(unsigned long long, nothrow);
1135   case LibFunc_msvc_new_longlong_nothrow:
1136   // new[](unsigned int, nothrow);
1137   case LibFunc_msvc_new_array_int_nothrow:
1138   // new[](unsigned long long, nothrow);
1139   case LibFunc_msvc_new_array_longlong_nothrow:
1140   // new(unsigned int, align_val_t)
1141   case LibFunc_ZnwjSt11align_val_t:
1142   // new(unsigned long, align_val_t)
1143   case LibFunc_ZnwmSt11align_val_t:
1144   // new[](unsigned int, align_val_t)
1145   case LibFunc_ZnajSt11align_val_t:
1146   // new[](unsigned long, align_val_t)
1147   case LibFunc_ZnamSt11align_val_t:
1148     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1149 
1150   // new(unsigned int, align_val_t, nothrow)
1151   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1152   // new(unsigned long, align_val_t, nothrow)
1153   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1154   // new[](unsigned int, align_val_t, nothrow)
1155   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1156   // new[](unsigned long, align_val_t, nothrow)
1157   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1158     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1159 
1160   // void operator delete[](void*);
1161   case LibFunc_ZdaPv:
1162   // void operator delete(void*);
1163   case LibFunc_ZdlPv:
1164   // void operator delete[](void*);
1165   case LibFunc_msvc_delete_array_ptr32:
1166   // void operator delete[](void*);
1167   case LibFunc_msvc_delete_array_ptr64:
1168   // void operator delete(void*);
1169   case LibFunc_msvc_delete_ptr32:
1170   // void operator delete(void*);
1171   case LibFunc_msvc_delete_ptr64:
1172     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1173 
1174   // void operator delete[](void*, nothrow);
1175   case LibFunc_ZdaPvRKSt9nothrow_t:
1176   // void operator delete[](void*, unsigned int);
1177   case LibFunc_ZdaPvj:
1178   // void operator delete[](void*, unsigned long);
1179   case LibFunc_ZdaPvm:
1180   // void operator delete(void*, nothrow);
1181   case LibFunc_ZdlPvRKSt9nothrow_t:
1182   // void operator delete(void*, unsigned int);
1183   case LibFunc_ZdlPvj:
1184   // void operator delete(void*, unsigned long);
1185   case LibFunc_ZdlPvm:
1186   // void operator delete(void*, align_val_t)
1187   case LibFunc_ZdlPvSt11align_val_t:
1188   // void operator delete[](void*, align_val_t)
1189   case LibFunc_ZdaPvSt11align_val_t:
1190   // void operator delete[](void*, unsigned int);
1191   case LibFunc_msvc_delete_array_ptr32_int:
1192   // void operator delete[](void*, nothrow);
1193   case LibFunc_msvc_delete_array_ptr32_nothrow:
1194   // void operator delete[](void*, unsigned long long);
1195   case LibFunc_msvc_delete_array_ptr64_longlong:
1196   // void operator delete[](void*, nothrow);
1197   case LibFunc_msvc_delete_array_ptr64_nothrow:
1198   // void operator delete(void*, unsigned int);
1199   case LibFunc_msvc_delete_ptr32_int:
1200   // void operator delete(void*, nothrow);
1201   case LibFunc_msvc_delete_ptr32_nothrow:
1202   // void operator delete(void*, unsigned long long);
1203   case LibFunc_msvc_delete_ptr64_longlong:
1204   // void operator delete(void*, nothrow);
1205   case LibFunc_msvc_delete_ptr64_nothrow:
1206     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1207 
1208   // void operator delete(void*, align_val_t, nothrow)
1209   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1210   // void operator delete[](void*, align_val_t, nothrow)
1211   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1212     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1213 
1214   case LibFunc_memset_pattern16:
1215     return (!FTy.isVarArg() && NumParams == 3 &&
1216             FTy.getParamType(0)->isPointerTy() &&
1217             FTy.getParamType(1)->isPointerTy() &&
1218             FTy.getParamType(2)->isIntegerTy());
1219 
1220   case LibFunc_cxa_guard_abort:
1221   case LibFunc_cxa_guard_acquire:
1222   case LibFunc_cxa_guard_release:
1223   case LibFunc_nvvm_reflect:
1224     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1225 
1226   case LibFunc_sincospi_stret:
1227   case LibFunc_sincospif_stret:
1228     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1229 
1230   case LibFunc_acos:
1231   case LibFunc_acos_finite:
1232   case LibFunc_acosf:
1233   case LibFunc_acosf_finite:
1234   case LibFunc_acosh:
1235   case LibFunc_acosh_finite:
1236   case LibFunc_acoshf:
1237   case LibFunc_acoshf_finite:
1238   case LibFunc_acoshl:
1239   case LibFunc_acoshl_finite:
1240   case LibFunc_acosl:
1241   case LibFunc_acosl_finite:
1242   case LibFunc_asin:
1243   case LibFunc_asin_finite:
1244   case LibFunc_asinf:
1245   case LibFunc_asinf_finite:
1246   case LibFunc_asinh:
1247   case LibFunc_asinhf:
1248   case LibFunc_asinhl:
1249   case LibFunc_asinl:
1250   case LibFunc_asinl_finite:
1251   case LibFunc_atan:
1252   case LibFunc_atanf:
1253   case LibFunc_atanh:
1254   case LibFunc_atanh_finite:
1255   case LibFunc_atanhf:
1256   case LibFunc_atanhf_finite:
1257   case LibFunc_atanhl:
1258   case LibFunc_atanhl_finite:
1259   case LibFunc_atanl:
1260   case LibFunc_cbrt:
1261   case LibFunc_cbrtf:
1262   case LibFunc_cbrtl:
1263   case LibFunc_ceil:
1264   case LibFunc_ceilf:
1265   case LibFunc_ceill:
1266   case LibFunc_cos:
1267   case LibFunc_cosf:
1268   case LibFunc_cosh:
1269   case LibFunc_cosh_finite:
1270   case LibFunc_coshf:
1271   case LibFunc_coshf_finite:
1272   case LibFunc_coshl:
1273   case LibFunc_coshl_finite:
1274   case LibFunc_cosl:
1275   case LibFunc_exp10:
1276   case LibFunc_exp10_finite:
1277   case LibFunc_exp10f:
1278   case LibFunc_exp10f_finite:
1279   case LibFunc_exp10l:
1280   case LibFunc_exp10l_finite:
1281   case LibFunc_exp2:
1282   case LibFunc_exp2_finite:
1283   case LibFunc_exp2f:
1284   case LibFunc_exp2f_finite:
1285   case LibFunc_exp2l:
1286   case LibFunc_exp2l_finite:
1287   case LibFunc_exp:
1288   case LibFunc_exp_finite:
1289   case LibFunc_expf:
1290   case LibFunc_expf_finite:
1291   case LibFunc_expl:
1292   case LibFunc_expl_finite:
1293   case LibFunc_expm1:
1294   case LibFunc_expm1f:
1295   case LibFunc_expm1l:
1296   case LibFunc_fabs:
1297   case LibFunc_fabsf:
1298   case LibFunc_fabsl:
1299   case LibFunc_floor:
1300   case LibFunc_floorf:
1301   case LibFunc_floorl:
1302   case LibFunc_log10:
1303   case LibFunc_log10_finite:
1304   case LibFunc_log10f:
1305   case LibFunc_log10f_finite:
1306   case LibFunc_log10l:
1307   case LibFunc_log10l_finite:
1308   case LibFunc_log1p:
1309   case LibFunc_log1pf:
1310   case LibFunc_log1pl:
1311   case LibFunc_log2:
1312   case LibFunc_log2_finite:
1313   case LibFunc_log2f:
1314   case LibFunc_log2f_finite:
1315   case LibFunc_log2l:
1316   case LibFunc_log2l_finite:
1317   case LibFunc_log:
1318   case LibFunc_log_finite:
1319   case LibFunc_logb:
1320   case LibFunc_logbf:
1321   case LibFunc_logbl:
1322   case LibFunc_logf:
1323   case LibFunc_logf_finite:
1324   case LibFunc_logl:
1325   case LibFunc_logl_finite:
1326   case LibFunc_nearbyint:
1327   case LibFunc_nearbyintf:
1328   case LibFunc_nearbyintl:
1329   case LibFunc_rint:
1330   case LibFunc_rintf:
1331   case LibFunc_rintl:
1332   case LibFunc_round:
1333   case LibFunc_roundf:
1334   case LibFunc_roundl:
1335   case LibFunc_sin:
1336   case LibFunc_sinf:
1337   case LibFunc_sinh:
1338   case LibFunc_sinh_finite:
1339   case LibFunc_sinhf:
1340   case LibFunc_sinhf_finite:
1341   case LibFunc_sinhl:
1342   case LibFunc_sinhl_finite:
1343   case LibFunc_sinl:
1344   case LibFunc_sqrt:
1345   case LibFunc_sqrt_finite:
1346   case LibFunc_sqrtf:
1347   case LibFunc_sqrtf_finite:
1348   case LibFunc_sqrtl:
1349   case LibFunc_sqrtl_finite:
1350   case LibFunc_tan:
1351   case LibFunc_tanf:
1352   case LibFunc_tanh:
1353   case LibFunc_tanhf:
1354   case LibFunc_tanhl:
1355   case LibFunc_tanl:
1356   case LibFunc_trunc:
1357   case LibFunc_truncf:
1358   case LibFunc_truncl:
1359     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1360             FTy.getReturnType() == FTy.getParamType(0));
1361 
1362   case LibFunc_atan2:
1363   case LibFunc_atan2_finite:
1364   case LibFunc_atan2f:
1365   case LibFunc_atan2f_finite:
1366   case LibFunc_atan2l:
1367   case LibFunc_atan2l_finite:
1368   case LibFunc_fmin:
1369   case LibFunc_fminf:
1370   case LibFunc_fminl:
1371   case LibFunc_fmax:
1372   case LibFunc_fmaxf:
1373   case LibFunc_fmaxl:
1374   case LibFunc_fmod:
1375   case LibFunc_fmodf:
1376   case LibFunc_fmodl:
1377   case LibFunc_copysign:
1378   case LibFunc_copysignf:
1379   case LibFunc_copysignl:
1380   case LibFunc_pow:
1381   case LibFunc_pow_finite:
1382   case LibFunc_powf:
1383   case LibFunc_powf_finite:
1384   case LibFunc_powl:
1385   case LibFunc_powl_finite:
1386     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1387             FTy.getReturnType() == FTy.getParamType(0) &&
1388             FTy.getReturnType() == FTy.getParamType(1));
1389 
1390   case LibFunc_ldexp:
1391   case LibFunc_ldexpf:
1392   case LibFunc_ldexpl:
1393     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1394             FTy.getReturnType() == FTy.getParamType(0) &&
1395             FTy.getParamType(1)->isIntegerTy(32));
1396 
1397   case LibFunc_ffs:
1398   case LibFunc_ffsl:
1399   case LibFunc_ffsll:
1400   case LibFunc_fls:
1401   case LibFunc_flsl:
1402   case LibFunc_flsll:
1403     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1404             FTy.getParamType(0)->isIntegerTy());
1405 
1406   case LibFunc_isdigit:
1407   case LibFunc_isascii:
1408   case LibFunc_toascii:
1409   case LibFunc_putchar:
1410   case LibFunc_putchar_unlocked:
1411     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1412             FTy.getReturnType() == FTy.getParamType(0));
1413 
1414   case LibFunc_abs:
1415   case LibFunc_labs:
1416   case LibFunc_llabs:
1417     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1418             FTy.getReturnType() == FTy.getParamType(0));
1419 
1420   case LibFunc_cxa_atexit:
1421     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1422             FTy.getParamType(0)->isPointerTy() &&
1423             FTy.getParamType(1)->isPointerTy() &&
1424             FTy.getParamType(2)->isPointerTy());
1425 
1426   case LibFunc_sinpi:
1427   case LibFunc_cospi:
1428     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1429             FTy.getReturnType() == FTy.getParamType(0));
1430 
1431   case LibFunc_sinpif:
1432   case LibFunc_cospif:
1433     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1434             FTy.getReturnType() == FTy.getParamType(0));
1435 
1436   case LibFunc_strnlen:
1437     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1438             FTy.getParamType(0) == PCharTy &&
1439             FTy.getParamType(1) == SizeTTy);
1440 
1441   case LibFunc_posix_memalign:
1442     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1443             FTy.getParamType(0)->isPointerTy() &&
1444             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1445 
1446   case LibFunc_wcslen:
1447     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1448             FTy.getReturnType()->isIntegerTy());
1449 
1450   case LibFunc_cabs:
1451   case LibFunc_cabsf:
1452   case LibFunc_cabsl: {
1453     Type* RetTy = FTy.getReturnType();
1454     if (!RetTy->isFloatingPointTy())
1455       return false;
1456 
1457     // NOTE: These prototypes are target specific and currently support
1458     // "complex" passed as an array or discrete real & imaginary parameters.
1459     // Add other calling conventions to enable libcall optimizations.
1460     if (NumParams == 1)
1461       return (FTy.getParamType(0)->isArrayTy() &&
1462               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1463               FTy.getParamType(0)->getArrayElementType() == RetTy);
1464     else if (NumParams == 2)
1465       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1466     else
1467       return false;
1468   }
1469   case LibFunc::NumLibFuncs:
1470   case LibFunc::NotLibFunc:
1471     break;
1472   }
1473 
1474   llvm_unreachable("Invalid libfunc");
1475 }
1476 
1477 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1478                                        LibFunc &F) const {
1479   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1480   // intrinsics, this ends up being an interesting compile time win since we
1481   // avoid string normalization and comparison.
1482   if (FDecl.isIntrinsic()) return false;
1483 
1484   const DataLayout *DL =
1485       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1486   return getLibFunc(FDecl.getName(), F) &&
1487          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1488 }
1489 
1490 void TargetLibraryInfoImpl::disableAllFunctions() {
1491   memset(AvailableArray, 0, sizeof(AvailableArray));
1492 }
1493 
1494 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1495   return LHS.ScalarFnName < RHS.ScalarFnName;
1496 }
1497 
1498 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1499   return LHS.VectorFnName < RHS.VectorFnName;
1500 }
1501 
1502 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1503   return LHS.ScalarFnName < S;
1504 }
1505 
1506 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1507   return LHS.VectorFnName < S;
1508 }
1509 
1510 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1511   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1512   llvm::sort(VectorDescs, compareByScalarFnName);
1513 
1514   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1515   llvm::sort(ScalarDescs, compareByVectorFnName);
1516 }
1517 
1518 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1519     enum VectorLibrary VecLib) {
1520   switch (VecLib) {
1521   case Accelerate: {
1522     const VecDesc VecFuncs[] = {
1523     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1524     #include "llvm/Analysis/VecFuncs.def"
1525     };
1526     addVectorizableFunctions(VecFuncs);
1527     break;
1528   }
1529   case MASSV: {
1530     const VecDesc VecFuncs[] = {
1531     #define TLI_DEFINE_MASSV_VECFUNCS
1532     #include "llvm/Analysis/VecFuncs.def"
1533     };
1534     addVectorizableFunctions(VecFuncs);
1535     break;
1536   }
1537   case SVML: {
1538     const VecDesc VecFuncs[] = {
1539     #define TLI_DEFINE_SVML_VECFUNCS
1540     #include "llvm/Analysis/VecFuncs.def"
1541     };
1542     addVectorizableFunctions(VecFuncs);
1543     break;
1544   }
1545   case NoLibrary:
1546     break;
1547   }
1548 }
1549 
1550 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1551   funcName = sanitizeFunctionName(funcName);
1552   if (funcName.empty())
1553     return false;
1554 
1555   std::vector<VecDesc>::const_iterator I =
1556       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1557   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1558 }
1559 
1560 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1561                                                        unsigned VF) const {
1562   F = sanitizeFunctionName(F);
1563   if (F.empty())
1564     return F;
1565   std::vector<VecDesc>::const_iterator I =
1566       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1567   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1568     if (I->VectorizationFactor == VF)
1569       return I->VectorFnName;
1570     ++I;
1571   }
1572   return StringRef();
1573 }
1574 
1575 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1576                                                        unsigned &VF) const {
1577   F = sanitizeFunctionName(F);
1578   if (F.empty())
1579     return F;
1580 
1581   std::vector<VecDesc>::const_iterator I =
1582       llvm::lower_bound(ScalarDescs, F, compareWithVectorFnName);
1583   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1584     return StringRef();
1585   VF = I->VectorizationFactor;
1586   return I->ScalarFnName;
1587 }
1588 
1589 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
1590                                              FunctionAnalysisManager &) {
1591   if (!BaselineInfoImpl)
1592     BaselineInfoImpl =
1593         TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1594   return TargetLibraryInfo(*BaselineInfoImpl, &F);
1595 }
1596 
1597 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1598   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1599       M.getModuleFlag("wchar_size")))
1600     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1601   return 0;
1602 }
1603 
1604 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1605     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1606   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1607 }
1608 
1609 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1610     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1611   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1612 }
1613 
1614 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1615     const TargetLibraryInfoImpl &TLIImpl)
1616     : ImmutablePass(ID), TLA(TLIImpl) {
1617   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1618 }
1619 
1620 AnalysisKey TargetLibraryAnalysis::Key;
1621 
1622 // Register the basic pass.
1623 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1624                 "Target Library Information", false, true)
1625 char TargetLibraryInfoWrapperPass::ID = 0;
1626 
1627 void TargetLibraryInfoWrapperPass::anchor() {}
1628 
1629 unsigned TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF) const {
1630   ScalarF = sanitizeFunctionName(ScalarF);
1631   if (ScalarF.empty())
1632     return 1;
1633 
1634   unsigned VF = 1;
1635   std::vector<VecDesc>::const_iterator I =
1636       llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1637   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1638     if (I->VectorizationFactor > VF)
1639       VF = I->VectorizationFactor;
1640     ++I;
1641   }
1642   return VF;
1643 }
1644