1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the TargetLibraryInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/Analysis/TargetLibraryInfo.h"
15 #include "llvm/ADT/Triple.h"
16 #include "llvm/IR/Constants.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::SVML, "SVML",
28                           "Intel SVML library")));
29 
30 StringRef const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
31 #define TLI_DEFINE_STRING
32 #include "llvm/Analysis/TargetLibraryInfo.def"
33 };
34 
35 static bool hasSinCosPiStret(const Triple &T) {
36   // Only Darwin variants have _stret versions of combined trig functions.
37   if (!T.isOSDarwin())
38     return false;
39 
40   // The ABI is rather complicated on x86, so don't do anything special there.
41   if (T.getArch() == Triple::x86)
42     return false;
43 
44   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
45     return false;
46 
47   if (T.isiOS() && T.isOSVersionLT(7, 0))
48     return false;
49 
50   return true;
51 }
52 
53 /// Initialize the set of available library functions based on the specified
54 /// target triple. This should be carefully written so that a missing target
55 /// triple gets a sane set of defaults.
56 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
57                        ArrayRef<StringRef> StandardNames) {
58   // Verify that the StandardNames array is in alphabetical order.
59   assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
60                         [](StringRef LHS, StringRef RHS) {
61                           return LHS < RHS;
62                         }) &&
63          "TargetLibraryInfoImpl function names must be sorted");
64 
65   // Set IO unlocked variants as unavailable
66   // Set them as available per system below
67   TLI.setUnavailable(LibFunc_getchar_unlocked);
68   TLI.setUnavailable(LibFunc_putc_unlocked);
69   TLI.setUnavailable(LibFunc_putchar_unlocked);
70   TLI.setUnavailable(LibFunc_fputc_unlocked);
71   TLI.setUnavailable(LibFunc_fgetc_unlocked);
72   TLI.setUnavailable(LibFunc_fread_unlocked);
73   TLI.setUnavailable(LibFunc_fwrite_unlocked);
74   TLI.setUnavailable(LibFunc_fputs_unlocked);
75   TLI.setUnavailable(LibFunc_fgets_unlocked);
76 
77   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
78        ShouldSignExtI32Param = false;
79   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
80   // returns corresponding to C-level ints and unsigned ints.
81   if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le ||
82       T.getArch() == Triple::sparcv9 || T.getArch() == Triple::systemz) {
83     ShouldExtI32Param = true;
84     ShouldExtI32Return = true;
85   }
86   // Mips, on the other hand, needs signext on i32 parameters corresponding
87   // to both signed and unsigned ints.
88   if (T.getArch() == Triple::mips || T.getArch() == Triple::mipsel ||
89       T.getArch() == Triple::mips64 || T.getArch() == Triple::mips64el) {
90     ShouldSignExtI32Param = true;
91   }
92   TLI.setShouldExtI32Param(ShouldExtI32Param);
93   TLI.setShouldExtI32Return(ShouldExtI32Return);
94   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
95 
96   if (T.getArch() == Triple::r600 ||
97       T.getArch() == Triple::amdgcn) {
98     TLI.setUnavailable(LibFunc_ldexp);
99     TLI.setUnavailable(LibFunc_ldexpf);
100     TLI.setUnavailable(LibFunc_ldexpl);
101     TLI.setUnavailable(LibFunc_exp10);
102     TLI.setUnavailable(LibFunc_exp10f);
103     TLI.setUnavailable(LibFunc_exp10l);
104     TLI.setUnavailable(LibFunc_log10);
105     TLI.setUnavailable(LibFunc_log10f);
106     TLI.setUnavailable(LibFunc_log10l);
107   }
108 
109   // There are no library implementations of mempcy and memset for AMD gpus and
110   // these can be difficult to lower in the backend.
111   if (T.getArch() == Triple::r600 ||
112       T.getArch() == Triple::amdgcn) {
113     TLI.setUnavailable(LibFunc_memcpy);
114     TLI.setUnavailable(LibFunc_memset);
115     TLI.setUnavailable(LibFunc_memset_pattern16);
116     return;
117   }
118 
119   // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
120   // All versions of watchOS support it.
121   if (T.isMacOSX()) {
122     // available IO unlocked variants on Mac OS X
123     TLI.setAvailable(LibFunc_getc_unlocked);
124     TLI.setAvailable(LibFunc_getchar_unlocked);
125     TLI.setAvailable(LibFunc_putc_unlocked);
126     TLI.setAvailable(LibFunc_putchar_unlocked);
127 
128     if (T.isMacOSXVersionLT(10, 5))
129       TLI.setUnavailable(LibFunc_memset_pattern16);
130   } else if (T.isiOS()) {
131     if (T.isOSVersionLT(3, 0))
132       TLI.setUnavailable(LibFunc_memset_pattern16);
133   } else if (!T.isWatchOS()) {
134     TLI.setUnavailable(LibFunc_memset_pattern16);
135   }
136 
137   if (!hasSinCosPiStret(T)) {
138     TLI.setUnavailable(LibFunc_sinpi);
139     TLI.setUnavailable(LibFunc_sinpif);
140     TLI.setUnavailable(LibFunc_cospi);
141     TLI.setUnavailable(LibFunc_cospif);
142     TLI.setUnavailable(LibFunc_sincospi_stret);
143     TLI.setUnavailable(LibFunc_sincospif_stret);
144   }
145 
146   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
147       !T.isMacOSXVersionLT(10, 7)) {
148     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
149     // we don't care about) have two versions; on recent OSX, the one we want
150     // has a $UNIX2003 suffix. The two implementations are identical except
151     // for the return value in some edge cases.  However, we don't want to
152     // generate code that depends on the old symbols.
153     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
154     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
155   }
156 
157   // iprintf and friends are only available on XCore and TCE.
158   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
159     TLI.setUnavailable(LibFunc_iprintf);
160     TLI.setUnavailable(LibFunc_siprintf);
161     TLI.setUnavailable(LibFunc_fiprintf);
162   }
163 
164   if (T.isOSWindows() && !T.isOSCygMing()) {
165     // Win32 does not support long double
166     TLI.setUnavailable(LibFunc_acosl);
167     TLI.setUnavailable(LibFunc_asinl);
168     TLI.setUnavailable(LibFunc_atanl);
169     TLI.setUnavailable(LibFunc_atan2l);
170     TLI.setUnavailable(LibFunc_ceill);
171     TLI.setUnavailable(LibFunc_copysignl);
172     TLI.setUnavailable(LibFunc_cosl);
173     TLI.setUnavailable(LibFunc_coshl);
174     TLI.setUnavailable(LibFunc_expl);
175     TLI.setUnavailable(LibFunc_fabsf); // Win32 and Win64 both lack fabsf
176     TLI.setUnavailable(LibFunc_fabsl);
177     TLI.setUnavailable(LibFunc_floorl);
178     TLI.setUnavailable(LibFunc_fmaxl);
179     TLI.setUnavailable(LibFunc_fminl);
180     TLI.setUnavailable(LibFunc_fmodl);
181     TLI.setUnavailable(LibFunc_frexpl);
182     TLI.setUnavailable(LibFunc_ldexpf);
183     TLI.setUnavailable(LibFunc_ldexpl);
184     TLI.setUnavailable(LibFunc_logl);
185     TLI.setUnavailable(LibFunc_modfl);
186     TLI.setUnavailable(LibFunc_powl);
187     TLI.setUnavailable(LibFunc_sinl);
188     TLI.setUnavailable(LibFunc_sinhl);
189     TLI.setUnavailable(LibFunc_sqrtl);
190     TLI.setUnavailable(LibFunc_tanl);
191     TLI.setUnavailable(LibFunc_tanhl);
192 
193     // Win32 only has C89 math
194     TLI.setUnavailable(LibFunc_acosh);
195     TLI.setUnavailable(LibFunc_acoshf);
196     TLI.setUnavailable(LibFunc_acoshl);
197     TLI.setUnavailable(LibFunc_asinh);
198     TLI.setUnavailable(LibFunc_asinhf);
199     TLI.setUnavailable(LibFunc_asinhl);
200     TLI.setUnavailable(LibFunc_atanh);
201     TLI.setUnavailable(LibFunc_atanhf);
202     TLI.setUnavailable(LibFunc_atanhl);
203     TLI.setUnavailable(LibFunc_cabs);
204     TLI.setUnavailable(LibFunc_cabsf);
205     TLI.setUnavailable(LibFunc_cabsl);
206     TLI.setUnavailable(LibFunc_cbrt);
207     TLI.setUnavailable(LibFunc_cbrtf);
208     TLI.setUnavailable(LibFunc_cbrtl);
209     TLI.setUnavailable(LibFunc_exp2);
210     TLI.setUnavailable(LibFunc_exp2f);
211     TLI.setUnavailable(LibFunc_exp2l);
212     TLI.setUnavailable(LibFunc_expm1);
213     TLI.setUnavailable(LibFunc_expm1f);
214     TLI.setUnavailable(LibFunc_expm1l);
215     TLI.setUnavailable(LibFunc_log2);
216     TLI.setUnavailable(LibFunc_log2f);
217     TLI.setUnavailable(LibFunc_log2l);
218     TLI.setUnavailable(LibFunc_log1p);
219     TLI.setUnavailable(LibFunc_log1pf);
220     TLI.setUnavailable(LibFunc_log1pl);
221     TLI.setUnavailable(LibFunc_logb);
222     TLI.setUnavailable(LibFunc_logbf);
223     TLI.setUnavailable(LibFunc_logbl);
224     TLI.setUnavailable(LibFunc_nearbyint);
225     TLI.setUnavailable(LibFunc_nearbyintf);
226     TLI.setUnavailable(LibFunc_nearbyintl);
227     TLI.setUnavailable(LibFunc_rint);
228     TLI.setUnavailable(LibFunc_rintf);
229     TLI.setUnavailable(LibFunc_rintl);
230     TLI.setUnavailable(LibFunc_round);
231     TLI.setUnavailable(LibFunc_roundf);
232     TLI.setUnavailable(LibFunc_roundl);
233     TLI.setUnavailable(LibFunc_trunc);
234     TLI.setUnavailable(LibFunc_truncf);
235     TLI.setUnavailable(LibFunc_truncl);
236 
237     // Win32 provides some C99 math with mangled names
238     TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
239 
240     if (T.getArch() == Triple::x86) {
241       // Win32 on x86 implements single-precision math functions as macros
242       TLI.setUnavailable(LibFunc_acosf);
243       TLI.setUnavailable(LibFunc_asinf);
244       TLI.setUnavailable(LibFunc_atanf);
245       TLI.setUnavailable(LibFunc_atan2f);
246       TLI.setUnavailable(LibFunc_ceilf);
247       TLI.setUnavailable(LibFunc_copysignf);
248       TLI.setUnavailable(LibFunc_cosf);
249       TLI.setUnavailable(LibFunc_coshf);
250       TLI.setUnavailable(LibFunc_expf);
251       TLI.setUnavailable(LibFunc_floorf);
252       TLI.setUnavailable(LibFunc_fminf);
253       TLI.setUnavailable(LibFunc_fmaxf);
254       TLI.setUnavailable(LibFunc_fmodf);
255       TLI.setUnavailable(LibFunc_logf);
256       TLI.setUnavailable(LibFunc_log10f);
257       TLI.setUnavailable(LibFunc_modff);
258       TLI.setUnavailable(LibFunc_powf);
259       TLI.setUnavailable(LibFunc_sinf);
260       TLI.setUnavailable(LibFunc_sinhf);
261       TLI.setUnavailable(LibFunc_sqrtf);
262       TLI.setUnavailable(LibFunc_tanf);
263       TLI.setUnavailable(LibFunc_tanhf);
264     }
265 
266     // Win32 does *not* provide these functions, but they are
267     // generally available on POSIX-compliant systems:
268     TLI.setUnavailable(LibFunc_access);
269     TLI.setUnavailable(LibFunc_bcmp);
270     TLI.setUnavailable(LibFunc_bcopy);
271     TLI.setUnavailable(LibFunc_bzero);
272     TLI.setUnavailable(LibFunc_chmod);
273     TLI.setUnavailable(LibFunc_chown);
274     TLI.setUnavailable(LibFunc_closedir);
275     TLI.setUnavailable(LibFunc_ctermid);
276     TLI.setUnavailable(LibFunc_fdopen);
277     TLI.setUnavailable(LibFunc_ffs);
278     TLI.setUnavailable(LibFunc_fileno);
279     TLI.setUnavailable(LibFunc_flockfile);
280     TLI.setUnavailable(LibFunc_fseeko);
281     TLI.setUnavailable(LibFunc_fstat);
282     TLI.setUnavailable(LibFunc_fstatvfs);
283     TLI.setUnavailable(LibFunc_ftello);
284     TLI.setUnavailable(LibFunc_ftrylockfile);
285     TLI.setUnavailable(LibFunc_funlockfile);
286     TLI.setUnavailable(LibFunc_getitimer);
287     TLI.setUnavailable(LibFunc_getlogin_r);
288     TLI.setUnavailable(LibFunc_getpwnam);
289     TLI.setUnavailable(LibFunc_gettimeofday);
290     TLI.setUnavailable(LibFunc_htonl);
291     TLI.setUnavailable(LibFunc_htons);
292     TLI.setUnavailable(LibFunc_lchown);
293     TLI.setUnavailable(LibFunc_lstat);
294     TLI.setUnavailable(LibFunc_memccpy);
295     TLI.setUnavailable(LibFunc_mkdir);
296     TLI.setUnavailable(LibFunc_ntohl);
297     TLI.setUnavailable(LibFunc_ntohs);
298     TLI.setUnavailable(LibFunc_open);
299     TLI.setUnavailable(LibFunc_opendir);
300     TLI.setUnavailable(LibFunc_pclose);
301     TLI.setUnavailable(LibFunc_popen);
302     TLI.setUnavailable(LibFunc_pread);
303     TLI.setUnavailable(LibFunc_pwrite);
304     TLI.setUnavailable(LibFunc_read);
305     TLI.setUnavailable(LibFunc_readlink);
306     TLI.setUnavailable(LibFunc_realpath);
307     TLI.setUnavailable(LibFunc_rmdir);
308     TLI.setUnavailable(LibFunc_setitimer);
309     TLI.setUnavailable(LibFunc_stat);
310     TLI.setUnavailable(LibFunc_statvfs);
311     TLI.setUnavailable(LibFunc_stpcpy);
312     TLI.setUnavailable(LibFunc_stpncpy);
313     TLI.setUnavailable(LibFunc_strcasecmp);
314     TLI.setUnavailable(LibFunc_strncasecmp);
315     TLI.setUnavailable(LibFunc_times);
316     TLI.setUnavailable(LibFunc_uname);
317     TLI.setUnavailable(LibFunc_unlink);
318     TLI.setUnavailable(LibFunc_unsetenv);
319     TLI.setUnavailable(LibFunc_utime);
320     TLI.setUnavailable(LibFunc_utimes);
321     TLI.setUnavailable(LibFunc_write);
322 
323     // Win32 does *not* provide provide these functions, but they are
324     // specified by C99:
325     TLI.setUnavailable(LibFunc_atoll);
326     TLI.setUnavailable(LibFunc_frexpf);
327     TLI.setUnavailable(LibFunc_llabs);
328   }
329 
330   switch (T.getOS()) {
331   case Triple::MacOSX:
332     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
333     // and their names are __exp10 and __exp10f. exp10l is not available on
334     // OS X or iOS.
335     TLI.setUnavailable(LibFunc_exp10l);
336     if (T.isMacOSXVersionLT(10, 9)) {
337       TLI.setUnavailable(LibFunc_exp10);
338       TLI.setUnavailable(LibFunc_exp10f);
339     } else {
340       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
341       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
342     }
343     break;
344   case Triple::IOS:
345   case Triple::TvOS:
346   case Triple::WatchOS:
347     TLI.setUnavailable(LibFunc_exp10l);
348     if (!T.isWatchOS() && (T.isOSVersionLT(7, 0) ||
349                            (T.isOSVersionLT(9, 0) &&
350                             (T.getArch() == Triple::x86 ||
351                              T.getArch() == Triple::x86_64)))) {
352       TLI.setUnavailable(LibFunc_exp10);
353       TLI.setUnavailable(LibFunc_exp10f);
354     } else {
355       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
356       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
357     }
358     break;
359   case Triple::Linux:
360     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
361     // buggy prior to glibc version 2.18. Until this version is widely deployed
362     // or we have a reasonable detection strategy, we cannot use exp10 reliably
363     // on Linux.
364     //
365     // Fall through to disable all of them.
366     LLVM_FALLTHROUGH;
367   default:
368     TLI.setUnavailable(LibFunc_exp10);
369     TLI.setUnavailable(LibFunc_exp10f);
370     TLI.setUnavailable(LibFunc_exp10l);
371   }
372 
373   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
374   // Linux (GLIBC):
375   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
376   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
377   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
378   switch (T.getOS()) {
379   case Triple::Darwin:
380   case Triple::MacOSX:
381   case Triple::IOS:
382   case Triple::TvOS:
383   case Triple::WatchOS:
384   case Triple::FreeBSD:
385   case Triple::Linux:
386     break;
387   default:
388     TLI.setUnavailable(LibFunc_ffsl);
389   }
390 
391   // ffsll is available on at least FreeBSD and Linux (GLIBC):
392   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
393   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
394   switch (T.getOS()) {
395   case Triple::Darwin:
396   case Triple::MacOSX:
397   case Triple::IOS:
398   case Triple::TvOS:
399   case Triple::WatchOS:
400   case Triple::FreeBSD:
401   case Triple::Linux:
402     break;
403   default:
404     TLI.setUnavailable(LibFunc_ffsll);
405   }
406 
407   // The following functions are available on at least FreeBSD:
408   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
409   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
410   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
411   if (!T.isOSFreeBSD()) {
412     TLI.setUnavailable(LibFunc_fls);
413     TLI.setUnavailable(LibFunc_flsl);
414     TLI.setUnavailable(LibFunc_flsll);
415   }
416 
417   // The following functions are available on Linux,
418   // but Android uses bionic instead of glibc.
419   if (!T.isOSLinux() || T.isAndroid()) {
420     TLI.setUnavailable(LibFunc_dunder_strdup);
421     TLI.setUnavailable(LibFunc_dunder_strtok_r);
422     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
423     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
424     TLI.setUnavailable(LibFunc_under_IO_getc);
425     TLI.setUnavailable(LibFunc_under_IO_putc);
426     // But, Android has memalign.
427     if (!T.isAndroid())
428       TLI.setUnavailable(LibFunc_memalign);
429     TLI.setUnavailable(LibFunc_fopen64);
430     TLI.setUnavailable(LibFunc_fseeko64);
431     TLI.setUnavailable(LibFunc_fstat64);
432     TLI.setUnavailable(LibFunc_fstatvfs64);
433     TLI.setUnavailable(LibFunc_ftello64);
434     TLI.setUnavailable(LibFunc_lstat64);
435     TLI.setUnavailable(LibFunc_open64);
436     TLI.setUnavailable(LibFunc_stat64);
437     TLI.setUnavailable(LibFunc_statvfs64);
438     TLI.setUnavailable(LibFunc_tmpfile64);
439 
440     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
441     TLI.setUnavailable(LibFunc_acos_finite);
442     TLI.setUnavailable(LibFunc_acosf_finite);
443     TLI.setUnavailable(LibFunc_acosl_finite);
444     TLI.setUnavailable(LibFunc_acosh_finite);
445     TLI.setUnavailable(LibFunc_acoshf_finite);
446     TLI.setUnavailable(LibFunc_acoshl_finite);
447     TLI.setUnavailable(LibFunc_asin_finite);
448     TLI.setUnavailable(LibFunc_asinf_finite);
449     TLI.setUnavailable(LibFunc_asinl_finite);
450     TLI.setUnavailable(LibFunc_atan2_finite);
451     TLI.setUnavailable(LibFunc_atan2f_finite);
452     TLI.setUnavailable(LibFunc_atan2l_finite);
453     TLI.setUnavailable(LibFunc_atanh_finite);
454     TLI.setUnavailable(LibFunc_atanhf_finite);
455     TLI.setUnavailable(LibFunc_atanhl_finite);
456     TLI.setUnavailable(LibFunc_cosh_finite);
457     TLI.setUnavailable(LibFunc_coshf_finite);
458     TLI.setUnavailable(LibFunc_coshl_finite);
459     TLI.setUnavailable(LibFunc_exp10_finite);
460     TLI.setUnavailable(LibFunc_exp10f_finite);
461     TLI.setUnavailable(LibFunc_exp10l_finite);
462     TLI.setUnavailable(LibFunc_exp2_finite);
463     TLI.setUnavailable(LibFunc_exp2f_finite);
464     TLI.setUnavailable(LibFunc_exp2l_finite);
465     TLI.setUnavailable(LibFunc_exp_finite);
466     TLI.setUnavailable(LibFunc_expf_finite);
467     TLI.setUnavailable(LibFunc_expl_finite);
468     TLI.setUnavailable(LibFunc_log10_finite);
469     TLI.setUnavailable(LibFunc_log10f_finite);
470     TLI.setUnavailable(LibFunc_log10l_finite);
471     TLI.setUnavailable(LibFunc_log2_finite);
472     TLI.setUnavailable(LibFunc_log2f_finite);
473     TLI.setUnavailable(LibFunc_log2l_finite);
474     TLI.setUnavailable(LibFunc_log_finite);
475     TLI.setUnavailable(LibFunc_logf_finite);
476     TLI.setUnavailable(LibFunc_logl_finite);
477     TLI.setUnavailable(LibFunc_pow_finite);
478     TLI.setUnavailable(LibFunc_powf_finite);
479     TLI.setUnavailable(LibFunc_powl_finite);
480     TLI.setUnavailable(LibFunc_sinh_finite);
481     TLI.setUnavailable(LibFunc_sinhf_finite);
482     TLI.setUnavailable(LibFunc_sinhl_finite);
483   }
484 
485   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
486       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
487     // available IO unlocked variants on GNU/Linux and Android P or later
488     TLI.setAvailable(LibFunc_getc_unlocked);
489     TLI.setAvailable(LibFunc_getchar_unlocked);
490     TLI.setAvailable(LibFunc_putc_unlocked);
491     TLI.setAvailable(LibFunc_putchar_unlocked);
492     TLI.setAvailable(LibFunc_fputc_unlocked);
493     TLI.setAvailable(LibFunc_fgetc_unlocked);
494     TLI.setAvailable(LibFunc_fread_unlocked);
495     TLI.setAvailable(LibFunc_fwrite_unlocked);
496     TLI.setAvailable(LibFunc_fputs_unlocked);
497     TLI.setAvailable(LibFunc_fgets_unlocked);
498   }
499 
500   // As currently implemented in clang, NVPTX code has no standard library to
501   // speak of.  Headers provide a standard-ish library implementation, but many
502   // of the signatures are wrong -- for example, many libm functions are not
503   // extern "C".
504   //
505   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
506   // but only used functions are provided to llvm.  Moreover, most of the
507   // functions in libdevice don't map precisely to standard library functions.
508   //
509   // FIXME: Having no standard library prevents e.g. many fastmath
510   // optimizations, so this situation should be fixed.
511   if (T.isNVPTX()) {
512     TLI.disableAllFunctions();
513     TLI.setAvailable(LibFunc_nvvm_reflect);
514   } else {
515     TLI.setUnavailable(LibFunc_nvvm_reflect);
516   }
517 
518   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
519 }
520 
521 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
522   // Default to everything being available.
523   memset(AvailableArray, -1, sizeof(AvailableArray));
524 
525   initialize(*this, Triple(), StandardNames);
526 }
527 
528 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
529   // Default to everything being available.
530   memset(AvailableArray, -1, sizeof(AvailableArray));
531 
532   initialize(*this, T, StandardNames);
533 }
534 
535 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
536     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
537       ShouldExtI32Return(TLI.ShouldExtI32Return),
538       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
539   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
540   VectorDescs = TLI.VectorDescs;
541   ScalarDescs = TLI.ScalarDescs;
542 }
543 
544 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
545     : CustomNames(std::move(TLI.CustomNames)),
546       ShouldExtI32Param(TLI.ShouldExtI32Param),
547       ShouldExtI32Return(TLI.ShouldExtI32Return),
548       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
549   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
550             AvailableArray);
551   VectorDescs = TLI.VectorDescs;
552   ScalarDescs = TLI.ScalarDescs;
553 }
554 
555 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
556   CustomNames = TLI.CustomNames;
557   ShouldExtI32Param = TLI.ShouldExtI32Param;
558   ShouldExtI32Return = TLI.ShouldExtI32Return;
559   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
560   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
561   return *this;
562 }
563 
564 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
565   CustomNames = std::move(TLI.CustomNames);
566   ShouldExtI32Param = TLI.ShouldExtI32Param;
567   ShouldExtI32Return = TLI.ShouldExtI32Return;
568   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
569   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
570             AvailableArray);
571   return *this;
572 }
573 
574 static StringRef sanitizeFunctionName(StringRef funcName) {
575   // Filter out empty names and names containing null bytes, those can't be in
576   // our table.
577   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
578     return StringRef();
579 
580   // Check for \01 prefix that is used to mangle __asm declarations and
581   // strip it if present.
582   return GlobalValue::dropLLVMManglingEscape(funcName);
583 }
584 
585 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
586                                        LibFunc &F) const {
587   StringRef const *Start = &StandardNames[0];
588   StringRef const *End = &StandardNames[NumLibFuncs];
589 
590   funcName = sanitizeFunctionName(funcName);
591   if (funcName.empty())
592     return false;
593 
594   StringRef const *I = std::lower_bound(
595       Start, End, funcName, [](StringRef LHS, StringRef RHS) {
596         return LHS < RHS;
597       });
598   if (I != End && *I == funcName) {
599     F = (LibFunc)(I - Start);
600     return true;
601   }
602   return false;
603 }
604 
605 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
606                                                    LibFunc F,
607                                                    const DataLayout *DL) const {
608   LLVMContext &Ctx = FTy.getContext();
609   Type *PCharTy = Type::getInt8PtrTy(Ctx);
610   Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
611   auto IsSizeTTy = [SizeTTy](Type *Ty) {
612     return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
613   };
614   unsigned NumParams = FTy.getNumParams();
615 
616   switch (F) {
617   case LibFunc_strlen:
618     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
619             FTy.getReturnType()->isIntegerTy());
620 
621   case LibFunc_strchr:
622   case LibFunc_strrchr:
623     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
624             FTy.getParamType(0) == FTy.getReturnType() &&
625             FTy.getParamType(1)->isIntegerTy());
626 
627   case LibFunc_strtol:
628   case LibFunc_strtod:
629   case LibFunc_strtof:
630   case LibFunc_strtoul:
631   case LibFunc_strtoll:
632   case LibFunc_strtold:
633   case LibFunc_strtoull:
634     return ((NumParams == 2 || NumParams == 3) &&
635             FTy.getParamType(0)->isPointerTy() &&
636             FTy.getParamType(1)->isPointerTy());
637   case LibFunc_strcat:
638     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
639             FTy.getParamType(0) == FTy.getReturnType() &&
640             FTy.getParamType(1) == FTy.getReturnType());
641 
642   case LibFunc_strncat:
643     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
644             FTy.getParamType(0) == FTy.getReturnType() &&
645             FTy.getParamType(1) == FTy.getReturnType() &&
646             IsSizeTTy(FTy.getParamType(2)));
647 
648   case LibFunc_strcpy_chk:
649   case LibFunc_stpcpy_chk:
650     --NumParams;
651     if (!IsSizeTTy(FTy.getParamType(NumParams)))
652       return false;
653     LLVM_FALLTHROUGH;
654   case LibFunc_strcpy:
655   case LibFunc_stpcpy:
656     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
657             FTy.getParamType(0) == FTy.getParamType(1) &&
658             FTy.getParamType(0) == PCharTy);
659 
660   case LibFunc_strncpy_chk:
661   case LibFunc_stpncpy_chk:
662     --NumParams;
663     if (!IsSizeTTy(FTy.getParamType(NumParams)))
664       return false;
665     LLVM_FALLTHROUGH;
666   case LibFunc_strncpy:
667   case LibFunc_stpncpy:
668     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
669             FTy.getParamType(0) == FTy.getParamType(1) &&
670             FTy.getParamType(0) == PCharTy &&
671             IsSizeTTy(FTy.getParamType(2)));
672 
673   case LibFunc_strxfrm:
674     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
675             FTy.getParamType(1)->isPointerTy());
676 
677   case LibFunc_strcmp:
678     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
679             FTy.getParamType(0)->isPointerTy() &&
680             FTy.getParamType(0) == FTy.getParamType(1));
681 
682   case LibFunc_strncmp:
683     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
684             FTy.getParamType(0)->isPointerTy() &&
685             FTy.getParamType(0) == FTy.getParamType(1) &&
686             IsSizeTTy(FTy.getParamType(2)));
687 
688   case LibFunc_strspn:
689   case LibFunc_strcspn:
690     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
691             FTy.getParamType(0) == FTy.getParamType(1) &&
692             FTy.getReturnType()->isIntegerTy());
693 
694   case LibFunc_strcoll:
695   case LibFunc_strcasecmp:
696   case LibFunc_strncasecmp:
697     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
698             FTy.getParamType(1)->isPointerTy());
699 
700   case LibFunc_strstr:
701     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
702             FTy.getParamType(0)->isPointerTy() &&
703             FTy.getParamType(1)->isPointerTy());
704 
705   case LibFunc_strpbrk:
706     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
707             FTy.getReturnType() == FTy.getParamType(0) &&
708             FTy.getParamType(0) == FTy.getParamType(1));
709 
710   case LibFunc_strtok:
711   case LibFunc_strtok_r:
712     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
713   case LibFunc_scanf:
714   case LibFunc_setbuf:
715   case LibFunc_setvbuf:
716     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
717   case LibFunc_strdup:
718   case LibFunc_strndup:
719     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
720             FTy.getParamType(0)->isPointerTy());
721   case LibFunc_sscanf:
722   case LibFunc_stat:
723   case LibFunc_statvfs:
724   case LibFunc_siprintf:
725   case LibFunc_sprintf:
726     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
727             FTy.getParamType(1)->isPointerTy() &&
728             FTy.getReturnType()->isIntegerTy(32));
729   case LibFunc_snprintf:
730     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
731             FTy.getParamType(2)->isPointerTy() &&
732             FTy.getReturnType()->isIntegerTy(32));
733   case LibFunc_setitimer:
734     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
735             FTy.getParamType(2)->isPointerTy());
736   case LibFunc_system:
737     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
738   case LibFunc_malloc:
739     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
740   case LibFunc_memcmp:
741     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
742             FTy.getParamType(0)->isPointerTy() &&
743             FTy.getParamType(1)->isPointerTy());
744 
745   case LibFunc_memchr:
746   case LibFunc_memrchr:
747     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
748             FTy.getReturnType() == FTy.getParamType(0) &&
749             FTy.getParamType(1)->isIntegerTy(32) &&
750             IsSizeTTy(FTy.getParamType(2)));
751   case LibFunc_modf:
752   case LibFunc_modff:
753   case LibFunc_modfl:
754     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
755 
756   case LibFunc_memcpy_chk:
757   case LibFunc_memmove_chk:
758     --NumParams;
759     if (!IsSizeTTy(FTy.getParamType(NumParams)))
760       return false;
761     LLVM_FALLTHROUGH;
762   case LibFunc_memcpy:
763   case LibFunc_mempcpy:
764   case LibFunc_memmove:
765     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
766             FTy.getParamType(0)->isPointerTy() &&
767             FTy.getParamType(1)->isPointerTy() &&
768             IsSizeTTy(FTy.getParamType(2)));
769 
770   case LibFunc_memset_chk:
771     --NumParams;
772     if (!IsSizeTTy(FTy.getParamType(NumParams)))
773       return false;
774     LLVM_FALLTHROUGH;
775   case LibFunc_memset:
776     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
777             FTy.getParamType(0)->isPointerTy() &&
778             FTy.getParamType(1)->isIntegerTy() &&
779             IsSizeTTy(FTy.getParamType(2)));
780 
781   case LibFunc_memccpy:
782     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
783   case LibFunc_memalign:
784     return (FTy.getReturnType()->isPointerTy());
785   case LibFunc_realloc:
786   case LibFunc_reallocf:
787     return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
788             FTy.getParamType(0) == FTy.getReturnType() &&
789             IsSizeTTy(FTy.getParamType(1)));
790   case LibFunc_read:
791     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
792   case LibFunc_rewind:
793   case LibFunc_rmdir:
794   case LibFunc_remove:
795   case LibFunc_realpath:
796     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
797   case LibFunc_rename:
798     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
799             FTy.getParamType(1)->isPointerTy());
800   case LibFunc_readlink:
801     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
802             FTy.getParamType(1)->isPointerTy());
803   case LibFunc_write:
804     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
805   case LibFunc_bcopy:
806   case LibFunc_bcmp:
807     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
808             FTy.getParamType(1)->isPointerTy());
809   case LibFunc_bzero:
810     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
811   case LibFunc_calloc:
812     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
813 
814   case LibFunc_atof:
815   case LibFunc_atoi:
816   case LibFunc_atol:
817   case LibFunc_atoll:
818   case LibFunc_ferror:
819   case LibFunc_getenv:
820   case LibFunc_getpwnam:
821   case LibFunc_iprintf:
822   case LibFunc_pclose:
823   case LibFunc_perror:
824   case LibFunc_printf:
825   case LibFunc_puts:
826   case LibFunc_uname:
827   case LibFunc_under_IO_getc:
828   case LibFunc_unlink:
829   case LibFunc_unsetenv:
830     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
831 
832   case LibFunc_access:
833   case LibFunc_chmod:
834   case LibFunc_chown:
835   case LibFunc_clearerr:
836   case LibFunc_closedir:
837   case LibFunc_ctermid:
838   case LibFunc_fclose:
839   case LibFunc_feof:
840   case LibFunc_fflush:
841   case LibFunc_fgetc:
842   case LibFunc_fgetc_unlocked:
843   case LibFunc_fileno:
844   case LibFunc_flockfile:
845   case LibFunc_free:
846   case LibFunc_fseek:
847   case LibFunc_fseeko64:
848   case LibFunc_fseeko:
849   case LibFunc_fsetpos:
850   case LibFunc_ftell:
851   case LibFunc_ftello64:
852   case LibFunc_ftello:
853   case LibFunc_ftrylockfile:
854   case LibFunc_funlockfile:
855   case LibFunc_getc:
856   case LibFunc_getc_unlocked:
857   case LibFunc_getlogin_r:
858   case LibFunc_mkdir:
859   case LibFunc_mktime:
860   case LibFunc_times:
861     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
862 
863   case LibFunc_fopen:
864     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
865             FTy.getParamType(0)->isPointerTy() &&
866             FTy.getParamType(1)->isPointerTy());
867   case LibFunc_fdopen:
868     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
869             FTy.getParamType(1)->isPointerTy());
870   case LibFunc_fputc:
871   case LibFunc_fputc_unlocked:
872   case LibFunc_fstat:
873   case LibFunc_frexp:
874   case LibFunc_frexpf:
875   case LibFunc_frexpl:
876   case LibFunc_fstatvfs:
877     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
878   case LibFunc_fgets:
879   case LibFunc_fgets_unlocked:
880     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
881             FTy.getParamType(2)->isPointerTy());
882   case LibFunc_fread:
883   case LibFunc_fread_unlocked:
884     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
885             FTy.getParamType(3)->isPointerTy());
886   case LibFunc_fwrite:
887   case LibFunc_fwrite_unlocked:
888     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
889             FTy.getParamType(0)->isPointerTy() &&
890             FTy.getParamType(1)->isIntegerTy() &&
891             FTy.getParamType(2)->isIntegerTy() &&
892             FTy.getParamType(3)->isPointerTy());
893   case LibFunc_fputs:
894   case LibFunc_fputs_unlocked:
895     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
896             FTy.getParamType(1)->isPointerTy());
897   case LibFunc_fscanf:
898   case LibFunc_fiprintf:
899   case LibFunc_fprintf:
900     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
901             FTy.getParamType(0)->isPointerTy() &&
902             FTy.getParamType(1)->isPointerTy());
903   case LibFunc_fgetpos:
904     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
905             FTy.getParamType(1)->isPointerTy());
906   case LibFunc_getchar:
907   case LibFunc_getchar_unlocked:
908     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
909   case LibFunc_gets:
910     return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
911   case LibFunc_getitimer:
912     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
913   case LibFunc_ungetc:
914     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
915   case LibFunc_utime:
916   case LibFunc_utimes:
917     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
918             FTy.getParamType(1)->isPointerTy());
919   case LibFunc_putc:
920   case LibFunc_putc_unlocked:
921     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
922   case LibFunc_pread:
923   case LibFunc_pwrite:
924     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
925   case LibFunc_popen:
926     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
927             FTy.getParamType(0)->isPointerTy() &&
928             FTy.getParamType(1)->isPointerTy());
929   case LibFunc_vscanf:
930     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
931   case LibFunc_vsscanf:
932     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
933             FTy.getParamType(2)->isPointerTy());
934   case LibFunc_vfscanf:
935     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
936             FTy.getParamType(2)->isPointerTy());
937   case LibFunc_valloc:
938     return (FTy.getReturnType()->isPointerTy());
939   case LibFunc_vprintf:
940     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
941   case LibFunc_vfprintf:
942   case LibFunc_vsprintf:
943     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
944             FTy.getParamType(1)->isPointerTy());
945   case LibFunc_vsnprintf:
946     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
947             FTy.getParamType(2)->isPointerTy());
948   case LibFunc_open:
949     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
950   case LibFunc_opendir:
951     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
952             FTy.getParamType(0)->isPointerTy());
953   case LibFunc_tmpfile:
954     return (FTy.getReturnType()->isPointerTy());
955   case LibFunc_htonl:
956   case LibFunc_ntohl:
957     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
958             FTy.getReturnType() == FTy.getParamType(0));
959   case LibFunc_htons:
960   case LibFunc_ntohs:
961     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
962             FTy.getReturnType() == FTy.getParamType(0));
963   case LibFunc_lstat:
964     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
965             FTy.getParamType(1)->isPointerTy());
966   case LibFunc_lchown:
967     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
968   case LibFunc_qsort:
969     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
970   case LibFunc_dunder_strdup:
971   case LibFunc_dunder_strndup:
972     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
973             FTy.getParamType(0)->isPointerTy());
974   case LibFunc_dunder_strtok_r:
975     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
976   case LibFunc_under_IO_putc:
977     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
978   case LibFunc_dunder_isoc99_scanf:
979     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
980   case LibFunc_stat64:
981   case LibFunc_lstat64:
982   case LibFunc_statvfs64:
983     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
984             FTy.getParamType(1)->isPointerTy());
985   case LibFunc_dunder_isoc99_sscanf:
986     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
987             FTy.getParamType(1)->isPointerTy());
988   case LibFunc_fopen64:
989     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
990             FTy.getParamType(0)->isPointerTy() &&
991             FTy.getParamType(1)->isPointerTy());
992   case LibFunc_tmpfile64:
993     return (FTy.getReturnType()->isPointerTy());
994   case LibFunc_fstat64:
995   case LibFunc_fstatvfs64:
996     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
997   case LibFunc_open64:
998     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
999   case LibFunc_gettimeofday:
1000     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1001             FTy.getParamType(1)->isPointerTy());
1002 
1003   // new(unsigned int);
1004   case LibFunc_Znwj:
1005   // new(unsigned long);
1006   case LibFunc_Znwm:
1007   // new[](unsigned int);
1008   case LibFunc_Znaj:
1009   // new[](unsigned long);
1010   case LibFunc_Znam:
1011   // new(unsigned int);
1012   case LibFunc_msvc_new_int:
1013   // new(unsigned long long);
1014   case LibFunc_msvc_new_longlong:
1015   // new[](unsigned int);
1016   case LibFunc_msvc_new_array_int:
1017   // new[](unsigned long long);
1018   case LibFunc_msvc_new_array_longlong:
1019     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1020 
1021   // new(unsigned int, nothrow);
1022   case LibFunc_ZnwjRKSt9nothrow_t:
1023   // new(unsigned long, nothrow);
1024   case LibFunc_ZnwmRKSt9nothrow_t:
1025   // new[](unsigned int, nothrow);
1026   case LibFunc_ZnajRKSt9nothrow_t:
1027   // new[](unsigned long, nothrow);
1028   case LibFunc_ZnamRKSt9nothrow_t:
1029   // new(unsigned int, nothrow);
1030   case LibFunc_msvc_new_int_nothrow:
1031   // new(unsigned long long, nothrow);
1032   case LibFunc_msvc_new_longlong_nothrow:
1033   // new[](unsigned int, nothrow);
1034   case LibFunc_msvc_new_array_int_nothrow:
1035   // new[](unsigned long long, nothrow);
1036   case LibFunc_msvc_new_array_longlong_nothrow:
1037   // new(unsigned int, align_val_t)
1038   case LibFunc_ZnwjSt11align_val_t:
1039   // new(unsigned long, align_val_t)
1040   case LibFunc_ZnwmSt11align_val_t:
1041   // new[](unsigned int, align_val_t)
1042   case LibFunc_ZnajSt11align_val_t:
1043   // new[](unsigned long, align_val_t)
1044   case LibFunc_ZnamSt11align_val_t:
1045     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1046 
1047   // new(unsigned int, align_val_t, nothrow)
1048   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1049   // new(unsigned long, align_val_t, nothrow)
1050   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1051   // new[](unsigned int, align_val_t, nothrow)
1052   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1053   // new[](unsigned long, align_val_t, nothrow)
1054   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1055     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1056 
1057   // void operator delete[](void*);
1058   case LibFunc_ZdaPv:
1059   // void operator delete(void*);
1060   case LibFunc_ZdlPv:
1061   // void operator delete[](void*);
1062   case LibFunc_msvc_delete_array_ptr32:
1063   // void operator delete[](void*);
1064   case LibFunc_msvc_delete_array_ptr64:
1065   // void operator delete(void*);
1066   case LibFunc_msvc_delete_ptr32:
1067   // void operator delete(void*);
1068   case LibFunc_msvc_delete_ptr64:
1069     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1070 
1071   // void operator delete[](void*, nothrow);
1072   case LibFunc_ZdaPvRKSt9nothrow_t:
1073   // void operator delete[](void*, unsigned int);
1074   case LibFunc_ZdaPvj:
1075   // void operator delete[](void*, unsigned long);
1076   case LibFunc_ZdaPvm:
1077   // void operator delete(void*, nothrow);
1078   case LibFunc_ZdlPvRKSt9nothrow_t:
1079   // void operator delete(void*, unsigned int);
1080   case LibFunc_ZdlPvj:
1081   // void operator delete(void*, unsigned long);
1082   case LibFunc_ZdlPvm:
1083   // void operator delete(void*, align_val_t)
1084   case LibFunc_ZdlPvSt11align_val_t:
1085   // void operator delete[](void*, align_val_t)
1086   case LibFunc_ZdaPvSt11align_val_t:
1087   // void operator delete[](void*, unsigned int);
1088   case LibFunc_msvc_delete_array_ptr32_int:
1089   // void operator delete[](void*, nothrow);
1090   case LibFunc_msvc_delete_array_ptr32_nothrow:
1091   // void operator delete[](void*, unsigned long long);
1092   case LibFunc_msvc_delete_array_ptr64_longlong:
1093   // void operator delete[](void*, nothrow);
1094   case LibFunc_msvc_delete_array_ptr64_nothrow:
1095   // void operator delete(void*, unsigned int);
1096   case LibFunc_msvc_delete_ptr32_int:
1097   // void operator delete(void*, nothrow);
1098   case LibFunc_msvc_delete_ptr32_nothrow:
1099   // void operator delete(void*, unsigned long long);
1100   case LibFunc_msvc_delete_ptr64_longlong:
1101   // void operator delete(void*, nothrow);
1102   case LibFunc_msvc_delete_ptr64_nothrow:
1103     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1104 
1105   // void operator delete(void*, align_val_t, nothrow)
1106   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1107   // void operator delete[](void*, align_val_t, nothrow)
1108   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1109     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1110 
1111   case LibFunc_memset_pattern16:
1112     return (!FTy.isVarArg() && NumParams == 3 &&
1113             FTy.getParamType(0)->isPointerTy() &&
1114             FTy.getParamType(1)->isPointerTy() &&
1115             FTy.getParamType(2)->isIntegerTy());
1116 
1117   case LibFunc_cxa_guard_abort:
1118   case LibFunc_cxa_guard_acquire:
1119   case LibFunc_cxa_guard_release:
1120   case LibFunc_nvvm_reflect:
1121     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1122 
1123   case LibFunc_sincospi_stret:
1124   case LibFunc_sincospif_stret:
1125     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1126 
1127   case LibFunc_acos:
1128   case LibFunc_acos_finite:
1129   case LibFunc_acosf:
1130   case LibFunc_acosf_finite:
1131   case LibFunc_acosh:
1132   case LibFunc_acosh_finite:
1133   case LibFunc_acoshf:
1134   case LibFunc_acoshf_finite:
1135   case LibFunc_acoshl:
1136   case LibFunc_acoshl_finite:
1137   case LibFunc_acosl:
1138   case LibFunc_acosl_finite:
1139   case LibFunc_asin:
1140   case LibFunc_asin_finite:
1141   case LibFunc_asinf:
1142   case LibFunc_asinf_finite:
1143   case LibFunc_asinh:
1144   case LibFunc_asinhf:
1145   case LibFunc_asinhl:
1146   case LibFunc_asinl:
1147   case LibFunc_asinl_finite:
1148   case LibFunc_atan:
1149   case LibFunc_atanf:
1150   case LibFunc_atanh:
1151   case LibFunc_atanh_finite:
1152   case LibFunc_atanhf:
1153   case LibFunc_atanhf_finite:
1154   case LibFunc_atanhl:
1155   case LibFunc_atanhl_finite:
1156   case LibFunc_atanl:
1157   case LibFunc_cbrt:
1158   case LibFunc_cbrtf:
1159   case LibFunc_cbrtl:
1160   case LibFunc_ceil:
1161   case LibFunc_ceilf:
1162   case LibFunc_ceill:
1163   case LibFunc_cos:
1164   case LibFunc_cosf:
1165   case LibFunc_cosh:
1166   case LibFunc_cosh_finite:
1167   case LibFunc_coshf:
1168   case LibFunc_coshf_finite:
1169   case LibFunc_coshl:
1170   case LibFunc_coshl_finite:
1171   case LibFunc_cosl:
1172   case LibFunc_exp10:
1173   case LibFunc_exp10_finite:
1174   case LibFunc_exp10f:
1175   case LibFunc_exp10f_finite:
1176   case LibFunc_exp10l:
1177   case LibFunc_exp10l_finite:
1178   case LibFunc_exp2:
1179   case LibFunc_exp2_finite:
1180   case LibFunc_exp2f:
1181   case LibFunc_exp2f_finite:
1182   case LibFunc_exp2l:
1183   case LibFunc_exp2l_finite:
1184   case LibFunc_exp:
1185   case LibFunc_exp_finite:
1186   case LibFunc_expf:
1187   case LibFunc_expf_finite:
1188   case LibFunc_expl:
1189   case LibFunc_expl_finite:
1190   case LibFunc_expm1:
1191   case LibFunc_expm1f:
1192   case LibFunc_expm1l:
1193   case LibFunc_fabs:
1194   case LibFunc_fabsf:
1195   case LibFunc_fabsl:
1196   case LibFunc_floor:
1197   case LibFunc_floorf:
1198   case LibFunc_floorl:
1199   case LibFunc_log10:
1200   case LibFunc_log10_finite:
1201   case LibFunc_log10f:
1202   case LibFunc_log10f_finite:
1203   case LibFunc_log10l:
1204   case LibFunc_log10l_finite:
1205   case LibFunc_log1p:
1206   case LibFunc_log1pf:
1207   case LibFunc_log1pl:
1208   case LibFunc_log2:
1209   case LibFunc_log2_finite:
1210   case LibFunc_log2f:
1211   case LibFunc_log2f_finite:
1212   case LibFunc_log2l:
1213   case LibFunc_log2l_finite:
1214   case LibFunc_log:
1215   case LibFunc_log_finite:
1216   case LibFunc_logb:
1217   case LibFunc_logbf:
1218   case LibFunc_logbl:
1219   case LibFunc_logf:
1220   case LibFunc_logf_finite:
1221   case LibFunc_logl:
1222   case LibFunc_logl_finite:
1223   case LibFunc_nearbyint:
1224   case LibFunc_nearbyintf:
1225   case LibFunc_nearbyintl:
1226   case LibFunc_rint:
1227   case LibFunc_rintf:
1228   case LibFunc_rintl:
1229   case LibFunc_round:
1230   case LibFunc_roundf:
1231   case LibFunc_roundl:
1232   case LibFunc_sin:
1233   case LibFunc_sinf:
1234   case LibFunc_sinh:
1235   case LibFunc_sinh_finite:
1236   case LibFunc_sinhf:
1237   case LibFunc_sinhf_finite:
1238   case LibFunc_sinhl:
1239   case LibFunc_sinhl_finite:
1240   case LibFunc_sinl:
1241   case LibFunc_sqrt:
1242   case LibFunc_sqrt_finite:
1243   case LibFunc_sqrtf:
1244   case LibFunc_sqrtf_finite:
1245   case LibFunc_sqrtl:
1246   case LibFunc_sqrtl_finite:
1247   case LibFunc_tan:
1248   case LibFunc_tanf:
1249   case LibFunc_tanh:
1250   case LibFunc_tanhf:
1251   case LibFunc_tanhl:
1252   case LibFunc_tanl:
1253   case LibFunc_trunc:
1254   case LibFunc_truncf:
1255   case LibFunc_truncl:
1256     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1257             FTy.getReturnType() == FTy.getParamType(0));
1258 
1259   case LibFunc_atan2:
1260   case LibFunc_atan2_finite:
1261   case LibFunc_atan2f:
1262   case LibFunc_atan2f_finite:
1263   case LibFunc_atan2l:
1264   case LibFunc_atan2l_finite:
1265   case LibFunc_fmin:
1266   case LibFunc_fminf:
1267   case LibFunc_fminl:
1268   case LibFunc_fmax:
1269   case LibFunc_fmaxf:
1270   case LibFunc_fmaxl:
1271   case LibFunc_fmod:
1272   case LibFunc_fmodf:
1273   case LibFunc_fmodl:
1274   case LibFunc_copysign:
1275   case LibFunc_copysignf:
1276   case LibFunc_copysignl:
1277   case LibFunc_pow:
1278   case LibFunc_pow_finite:
1279   case LibFunc_powf:
1280   case LibFunc_powf_finite:
1281   case LibFunc_powl:
1282   case LibFunc_powl_finite:
1283     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1284             FTy.getReturnType() == FTy.getParamType(0) &&
1285             FTy.getReturnType() == FTy.getParamType(1));
1286 
1287   case LibFunc_ldexp:
1288   case LibFunc_ldexpf:
1289   case LibFunc_ldexpl:
1290     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1291             FTy.getReturnType() == FTy.getParamType(0) &&
1292             FTy.getParamType(1)->isIntegerTy(32));
1293 
1294   case LibFunc_ffs:
1295   case LibFunc_ffsl:
1296   case LibFunc_ffsll:
1297   case LibFunc_fls:
1298   case LibFunc_flsl:
1299   case LibFunc_flsll:
1300     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1301             FTy.getParamType(0)->isIntegerTy());
1302 
1303   case LibFunc_isdigit:
1304   case LibFunc_isascii:
1305   case LibFunc_toascii:
1306   case LibFunc_putchar:
1307   case LibFunc_putchar_unlocked:
1308     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1309             FTy.getReturnType() == FTy.getParamType(0));
1310 
1311   case LibFunc_abs:
1312   case LibFunc_labs:
1313   case LibFunc_llabs:
1314     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1315             FTy.getReturnType() == FTy.getParamType(0));
1316 
1317   case LibFunc_cxa_atexit:
1318     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1319             FTy.getParamType(0)->isPointerTy() &&
1320             FTy.getParamType(1)->isPointerTy() &&
1321             FTy.getParamType(2)->isPointerTy());
1322 
1323   case LibFunc_sinpi:
1324   case LibFunc_cospi:
1325     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1326             FTy.getReturnType() == FTy.getParamType(0));
1327 
1328   case LibFunc_sinpif:
1329   case LibFunc_cospif:
1330     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1331             FTy.getReturnType() == FTy.getParamType(0));
1332 
1333   case LibFunc_strnlen:
1334     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1335             FTy.getParamType(0) == PCharTy &&
1336             FTy.getParamType(1) == SizeTTy);
1337 
1338   case LibFunc_posix_memalign:
1339     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1340             FTy.getParamType(0)->isPointerTy() &&
1341             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1342 
1343   case LibFunc_wcslen:
1344     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1345             FTy.getReturnType()->isIntegerTy());
1346 
1347   case LibFunc_cabs:
1348   case LibFunc_cabsf:
1349   case LibFunc_cabsl: {
1350     Type* RetTy = FTy.getReturnType();
1351     if (!RetTy->isFloatingPointTy())
1352       return false;
1353 
1354     // NOTE: These prototypes are target specific and currently support
1355     // "complex" passed as an array or discrete real & imaginary parameters.
1356     // Add other calling conventions to enable libcall optimizations.
1357     if (NumParams == 1)
1358       return (FTy.getParamType(0)->isArrayTy() &&
1359               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1360               FTy.getParamType(0)->getArrayElementType() == RetTy);
1361     else if (NumParams == 2)
1362       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1363     else
1364       return false;
1365   }
1366   case LibFunc::NumLibFuncs:
1367     break;
1368   }
1369 
1370   llvm_unreachable("Invalid libfunc");
1371 }
1372 
1373 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1374                                        LibFunc &F) const {
1375   const DataLayout *DL =
1376       FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1377   return getLibFunc(FDecl.getName(), F) &&
1378          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1379 }
1380 
1381 void TargetLibraryInfoImpl::disableAllFunctions() {
1382   memset(AvailableArray, 0, sizeof(AvailableArray));
1383 }
1384 
1385 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1386   return LHS.ScalarFnName < RHS.ScalarFnName;
1387 }
1388 
1389 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1390   return LHS.VectorFnName < RHS.VectorFnName;
1391 }
1392 
1393 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1394   return LHS.ScalarFnName < S;
1395 }
1396 
1397 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1398   return LHS.VectorFnName < S;
1399 }
1400 
1401 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1402   VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1403   llvm::sort(VectorDescs.begin(), VectorDescs.end(), compareByScalarFnName);
1404 
1405   ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1406   llvm::sort(ScalarDescs.begin(), ScalarDescs.end(), compareByVectorFnName);
1407 }
1408 
1409 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1410     enum VectorLibrary VecLib) {
1411   switch (VecLib) {
1412   case Accelerate: {
1413     const VecDesc VecFuncs[] = {
1414         // Floating-Point Arithmetic and Auxiliary Functions
1415         {"ceilf", "vceilf", 4},
1416         {"fabsf", "vfabsf", 4},
1417         {"llvm.fabs.f32", "vfabsf", 4},
1418         {"floorf", "vfloorf", 4},
1419         {"sqrtf", "vsqrtf", 4},
1420         {"llvm.sqrt.f32", "vsqrtf", 4},
1421 
1422         // Exponential and Logarithmic Functions
1423         {"expf", "vexpf", 4},
1424         {"llvm.exp.f32", "vexpf", 4},
1425         {"expm1f", "vexpm1f", 4},
1426         {"logf", "vlogf", 4},
1427         {"llvm.log.f32", "vlogf", 4},
1428         {"log1pf", "vlog1pf", 4},
1429         {"log10f", "vlog10f", 4},
1430         {"llvm.log10.f32", "vlog10f", 4},
1431         {"logbf", "vlogbf", 4},
1432 
1433         // Trigonometric Functions
1434         {"sinf", "vsinf", 4},
1435         {"llvm.sin.f32", "vsinf", 4},
1436         {"cosf", "vcosf", 4},
1437         {"llvm.cos.f32", "vcosf", 4},
1438         {"tanf", "vtanf", 4},
1439         {"asinf", "vasinf", 4},
1440         {"acosf", "vacosf", 4},
1441         {"atanf", "vatanf", 4},
1442 
1443         // Hyperbolic Functions
1444         {"sinhf", "vsinhf", 4},
1445         {"coshf", "vcoshf", 4},
1446         {"tanhf", "vtanhf", 4},
1447         {"asinhf", "vasinhf", 4},
1448         {"acoshf", "vacoshf", 4},
1449         {"atanhf", "vatanhf", 4},
1450     };
1451     addVectorizableFunctions(VecFuncs);
1452     break;
1453   }
1454   case SVML: {
1455     const VecDesc VecFuncs[] = {
1456         {"sin", "__svml_sin2", 2},
1457         {"sin", "__svml_sin4", 4},
1458         {"sin", "__svml_sin8", 8},
1459 
1460         {"sinf", "__svml_sinf4", 4},
1461         {"sinf", "__svml_sinf8", 8},
1462         {"sinf", "__svml_sinf16", 16},
1463 
1464         {"cos", "__svml_cos2", 2},
1465         {"cos", "__svml_cos4", 4},
1466         {"cos", "__svml_cos8", 8},
1467 
1468         {"cosf", "__svml_cosf4", 4},
1469         {"cosf", "__svml_cosf8", 8},
1470         {"cosf", "__svml_cosf16", 16},
1471 
1472         {"pow", "__svml_pow2", 2},
1473         {"pow", "__svml_pow4", 4},
1474         {"pow", "__svml_pow8", 8},
1475 
1476         {"powf", "__svml_powf4", 4},
1477         {"powf", "__svml_powf8", 8},
1478         {"powf", "__svml_powf16", 16},
1479 
1480         { "__pow_finite", "__svml_pow2", 2 },
1481         { "__pow_finite", "__svml_pow4", 4 },
1482         { "__pow_finite", "__svml_pow8", 8 },
1483 
1484         { "__powf_finite", "__svml_powf4", 4 },
1485         { "__powf_finite", "__svml_powf8", 8 },
1486         { "__powf_finite", "__svml_powf16", 16 },
1487 
1488         {"llvm.pow.f64", "__svml_pow2", 2},
1489         {"llvm.pow.f64", "__svml_pow4", 4},
1490         {"llvm.pow.f64", "__svml_pow8", 8},
1491 
1492         {"llvm.pow.f32", "__svml_powf4", 4},
1493         {"llvm.pow.f32", "__svml_powf8", 8},
1494         {"llvm.pow.f32", "__svml_powf16", 16},
1495 
1496         {"exp", "__svml_exp2", 2},
1497         {"exp", "__svml_exp4", 4},
1498         {"exp", "__svml_exp8", 8},
1499 
1500         {"expf", "__svml_expf4", 4},
1501         {"expf", "__svml_expf8", 8},
1502         {"expf", "__svml_expf16", 16},
1503 
1504         { "__exp_finite", "__svml_exp2", 2 },
1505         { "__exp_finite", "__svml_exp4", 4 },
1506         { "__exp_finite", "__svml_exp8", 8 },
1507 
1508         { "__expf_finite", "__svml_expf4", 4 },
1509         { "__expf_finite", "__svml_expf8", 8 },
1510         { "__expf_finite", "__svml_expf16", 16 },
1511 
1512         {"llvm.exp.f64", "__svml_exp2", 2},
1513         {"llvm.exp.f64", "__svml_exp4", 4},
1514         {"llvm.exp.f64", "__svml_exp8", 8},
1515 
1516         {"llvm.exp.f32", "__svml_expf4", 4},
1517         {"llvm.exp.f32", "__svml_expf8", 8},
1518         {"llvm.exp.f32", "__svml_expf16", 16},
1519 
1520         {"log", "__svml_log2", 2},
1521         {"log", "__svml_log4", 4},
1522         {"log", "__svml_log8", 8},
1523 
1524         {"logf", "__svml_logf4", 4},
1525         {"logf", "__svml_logf8", 8},
1526         {"logf", "__svml_logf16", 16},
1527 
1528         { "__log_finite", "__svml_log2", 2 },
1529         { "__log_finite", "__svml_log4", 4 },
1530         { "__log_finite", "__svml_log8", 8 },
1531 
1532         { "__logf_finite", "__svml_logf4", 4 },
1533         { "__logf_finite", "__svml_logf8", 8 },
1534         { "__logf_finite", "__svml_logf16", 16 },
1535 
1536         {"llvm.log.f64", "__svml_log2", 2},
1537         {"llvm.log.f64", "__svml_log4", 4},
1538         {"llvm.log.f64", "__svml_log8", 8},
1539 
1540         {"llvm.log.f32", "__svml_logf4", 4},
1541         {"llvm.log.f32", "__svml_logf8", 8},
1542         {"llvm.log.f32", "__svml_logf16", 16},
1543     };
1544     addVectorizableFunctions(VecFuncs);
1545     break;
1546   }
1547   case NoLibrary:
1548     break;
1549   }
1550 }
1551 
1552 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1553   funcName = sanitizeFunctionName(funcName);
1554   if (funcName.empty())
1555     return false;
1556 
1557   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1558       VectorDescs.begin(), VectorDescs.end(), funcName,
1559       compareWithScalarFnName);
1560   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1561 }
1562 
1563 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1564                                                        unsigned VF) const {
1565   F = sanitizeFunctionName(F);
1566   if (F.empty())
1567     return F;
1568   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1569       VectorDescs.begin(), VectorDescs.end(), F, compareWithScalarFnName);
1570   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1571     if (I->VectorizationFactor == VF)
1572       return I->VectorFnName;
1573     ++I;
1574   }
1575   return StringRef();
1576 }
1577 
1578 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1579                                                        unsigned &VF) const {
1580   F = sanitizeFunctionName(F);
1581   if (F.empty())
1582     return F;
1583 
1584   std::vector<VecDesc>::const_iterator I = std::lower_bound(
1585       ScalarDescs.begin(), ScalarDescs.end(), F, compareWithVectorFnName);
1586   if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1587     return StringRef();
1588   VF = I->VectorizationFactor;
1589   return I->ScalarFnName;
1590 }
1591 
1592 TargetLibraryInfo TargetLibraryAnalysis::run(Module &M,
1593                                              ModuleAnalysisManager &) {
1594   if (PresetInfoImpl)
1595     return TargetLibraryInfo(*PresetInfoImpl);
1596 
1597   return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
1598 }
1599 
1600 TargetLibraryInfo TargetLibraryAnalysis::run(Function &F,
1601                                              FunctionAnalysisManager &) {
1602   if (PresetInfoImpl)
1603     return TargetLibraryInfo(*PresetInfoImpl);
1604 
1605   return TargetLibraryInfo(
1606       lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
1607 }
1608 
1609 TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
1610   std::unique_ptr<TargetLibraryInfoImpl> &Impl =
1611       Impls[T.normalize()];
1612   if (!Impl)
1613     Impl.reset(new TargetLibraryInfoImpl(T));
1614 
1615   return *Impl;
1616 }
1617 
1618 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1619   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1620       M.getModuleFlag("wchar_size")))
1621     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1622   return 0;
1623 }
1624 
1625 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1626     : ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
1627   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1628 }
1629 
1630 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1631     : ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
1632   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1633 }
1634 
1635 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1636     const TargetLibraryInfoImpl &TLIImpl)
1637     : ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
1638   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1639 }
1640 
1641 AnalysisKey TargetLibraryAnalysis::Key;
1642 
1643 // Register the basic pass.
1644 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1645                 "Target Library Information", false, true)
1646 char TargetLibraryInfoWrapperPass::ID = 0;
1647 
1648 void TargetLibraryInfoWrapperPass::anchor() {}
1649