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::DarwinLibSystemM,
28                           "Darwin_libsystem_m", "Darwin libsystem_m"),
29                clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86",
30                           "GLIBC Vector Math library"),
31                clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
32                           "IBM MASS vector library"),
33                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
34                           "Intel SVML library")));
35 
36 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
37     {
38 #define TLI_DEFINE_STRING
39 #include "llvm/Analysis/TargetLibraryInfo.def"
40 };
41 
hasSinCosPiStret(const Triple & T)42 static bool hasSinCosPiStret(const Triple &T) {
43   // Only Darwin variants have _stret versions of combined trig functions.
44   if (!T.isOSDarwin())
45     return false;
46 
47   // The ABI is rather complicated on x86, so don't do anything special there.
48   if (T.getArch() == Triple::x86)
49     return false;
50 
51   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
52     return false;
53 
54   if (T.isiOS() && T.isOSVersionLT(7, 0))
55     return false;
56 
57   return true;
58 }
59 
hasBcmp(const Triple & TT)60 static bool hasBcmp(const Triple &TT) {
61   // Posix removed support from bcmp() in 2001, but the glibc and several
62   // implementations of the libc still have it.
63   if (TT.isOSLinux())
64     return TT.isGNUEnvironment() || TT.isMusl();
65   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
66   // not have it.
67   return TT.isOSFreeBSD() || TT.isOSSolaris();
68 }
69 
isCallingConvCCompatible(CallingConv::ID CC,StringRef TT,FunctionType * FuncTy)70 static bool isCallingConvCCompatible(CallingConv::ID CC, StringRef TT,
71                                      FunctionType *FuncTy) {
72   switch (CC) {
73   default:
74     return false;
75   case llvm::CallingConv::C:
76     return true;
77   case llvm::CallingConv::ARM_APCS:
78   case llvm::CallingConv::ARM_AAPCS:
79   case llvm::CallingConv::ARM_AAPCS_VFP: {
80 
81     // The iOS ABI diverges from the standard in some cases, so for now don't
82     // try to simplify those calls.
83     if (Triple(TT).isiOS())
84       return false;
85 
86     if (!FuncTy->getReturnType()->isPointerTy() &&
87         !FuncTy->getReturnType()->isIntegerTy() &&
88         !FuncTy->getReturnType()->isVoidTy())
89       return false;
90 
91     for (auto *Param : FuncTy->params()) {
92       if (!Param->isPointerTy() && !Param->isIntegerTy())
93         return false;
94     }
95     return true;
96   }
97   }
98   return false;
99 }
100 
isCallingConvCCompatible(CallBase * CI)101 bool TargetLibraryInfoImpl::isCallingConvCCompatible(CallBase *CI) {
102   return ::isCallingConvCCompatible(CI->getCallingConv(),
103                                     CI->getModule()->getTargetTriple(),
104                                     CI->getFunctionType());
105 }
106 
isCallingConvCCompatible(Function * F)107 bool TargetLibraryInfoImpl::isCallingConvCCompatible(Function *F) {
108   return ::isCallingConvCCompatible(F->getCallingConv(),
109                                     F->getParent()->getTargetTriple(),
110                                     F->getFunctionType());
111 }
112 
113 /// Initialize the set of available library functions based on the specified
114 /// target triple. This should be carefully written so that a missing target
115 /// triple gets a sane set of defaults.
initialize(TargetLibraryInfoImpl & TLI,const Triple & T,ArrayRef<StringLiteral> StandardNames)116 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
117                        ArrayRef<StringLiteral> StandardNames) {
118   // Verify that the StandardNames array is in alphabetical order.
119   assert(
120       llvm::is_sorted(StandardNames,
121                       [](StringRef LHS, StringRef RHS) { return LHS < RHS; }) &&
122       "TargetLibraryInfoImpl function names must be sorted");
123 
124   // Set IO unlocked variants as unavailable
125   // Set them as available per system below
126   TLI.setUnavailable(LibFunc_getc_unlocked);
127   TLI.setUnavailable(LibFunc_getchar_unlocked);
128   TLI.setUnavailable(LibFunc_putc_unlocked);
129   TLI.setUnavailable(LibFunc_putchar_unlocked);
130   TLI.setUnavailable(LibFunc_fputc_unlocked);
131   TLI.setUnavailable(LibFunc_fgetc_unlocked);
132   TLI.setUnavailable(LibFunc_fread_unlocked);
133   TLI.setUnavailable(LibFunc_fwrite_unlocked);
134   TLI.setUnavailable(LibFunc_fputs_unlocked);
135   TLI.setUnavailable(LibFunc_fgets_unlocked);
136 
137   bool ShouldExtI32Param = false, ShouldExtI32Return = false,
138        ShouldSignExtI32Param = false;
139   // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
140   // returns corresponding to C-level ints and unsigned ints.
141   if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
142       T.getArch() == Triple::systemz) {
143     ShouldExtI32Param = true;
144     ShouldExtI32Return = true;
145   }
146   // Mips, on the other hand, needs signext on i32 parameters corresponding
147   // to both signed and unsigned ints.
148   if (T.isMIPS()) {
149     ShouldSignExtI32Param = true;
150   }
151   TLI.setShouldExtI32Param(ShouldExtI32Param);
152   TLI.setShouldExtI32Return(ShouldExtI32Return);
153   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
154 
155   // Let's assume by default that the size of int is 32 bits, unless the target
156   // is a 16-bit architecture because then it most likely is 16 bits. If that
157   // isn't true for a target those defaults should be overridden below.
158   TLI.setIntSize(T.isArch16Bit() ? 16 : 32);
159 
160   // There is really no runtime library on AMDGPU, apart from
161   // __kmpc_alloc/free_shared.
162   if (T.isAMDGPU()) {
163     TLI.disableAllFunctions();
164     TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
165     TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
166     return;
167   }
168 
169   // memset_pattern{4,8,16} is only available on iOS 3.0 and Mac OS X 10.5 and
170   // later. All versions of watchOS support it.
171   if (T.isMacOSX()) {
172     // available IO unlocked variants on Mac OS X
173     TLI.setAvailable(LibFunc_getc_unlocked);
174     TLI.setAvailable(LibFunc_getchar_unlocked);
175     TLI.setAvailable(LibFunc_putc_unlocked);
176     TLI.setAvailable(LibFunc_putchar_unlocked);
177 
178     if (T.isMacOSXVersionLT(10, 5)) {
179       TLI.setUnavailable(LibFunc_memset_pattern4);
180       TLI.setUnavailable(LibFunc_memset_pattern8);
181       TLI.setUnavailable(LibFunc_memset_pattern16);
182     }
183   } else if (T.isiOS()) {
184     if (T.isOSVersionLT(3, 0)) {
185       TLI.setUnavailable(LibFunc_memset_pattern4);
186       TLI.setUnavailable(LibFunc_memset_pattern8);
187       TLI.setUnavailable(LibFunc_memset_pattern16);
188     }
189   } else if (!T.isWatchOS()) {
190     TLI.setUnavailable(LibFunc_memset_pattern4);
191     TLI.setUnavailable(LibFunc_memset_pattern8);
192     TLI.setUnavailable(LibFunc_memset_pattern16);
193   }
194 
195   if (!hasSinCosPiStret(T)) {
196     TLI.setUnavailable(LibFunc_sinpi);
197     TLI.setUnavailable(LibFunc_sinpif);
198     TLI.setUnavailable(LibFunc_cospi);
199     TLI.setUnavailable(LibFunc_cospif);
200     TLI.setUnavailable(LibFunc_sincospi_stret);
201     TLI.setUnavailable(LibFunc_sincospif_stret);
202   }
203 
204   if (!hasBcmp(T))
205     TLI.setUnavailable(LibFunc_bcmp);
206 
207   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
208       !T.isMacOSXVersionLT(10, 7)) {
209     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
210     // we don't care about) have two versions; on recent OSX, the one we want
211     // has a $UNIX2003 suffix. The two implementations are identical except
212     // for the return value in some edge cases.  However, we don't want to
213     // generate code that depends on the old symbols.
214     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
215     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
216   }
217 
218   // iprintf and friends are only available on XCore, TCE, and Emscripten.
219   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
220       T.getOS() != Triple::Emscripten) {
221     TLI.setUnavailable(LibFunc_iprintf);
222     TLI.setUnavailable(LibFunc_siprintf);
223     TLI.setUnavailable(LibFunc_fiprintf);
224   }
225 
226   // __small_printf and friends are only available on Emscripten.
227   if (T.getOS() != Triple::Emscripten) {
228     TLI.setUnavailable(LibFunc_small_printf);
229     TLI.setUnavailable(LibFunc_small_sprintf);
230     TLI.setUnavailable(LibFunc_small_fprintf);
231   }
232 
233   if (T.isOSWindows() && !T.isOSCygMing()) {
234     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
235     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
236     // XXX: In order to use an MSVCRT older than VC19,
237     // the specific library version must be explicit in the target triple,
238     // e.g., x86_64-pc-windows-msvc18.
239     bool hasPartialC99 = true;
240     if (T.isKnownWindowsMSVCEnvironment()) {
241       VersionTuple Version = T.getEnvironmentVersion();
242       hasPartialC99 = (Version.getMajor() == 0 || Version.getMajor() >= 19);
243     }
244 
245     // Latest targets support C89 math functions, in part.
246     bool isARM = (T.getArch() == Triple::aarch64 ||
247                   T.getArch() == Triple::arm);
248     bool hasPartialFloat = (isARM ||
249                             T.getArch() == Triple::x86_64);
250 
251     // Win32 does not support float C89 math functions, in general.
252     if (!hasPartialFloat) {
253       TLI.setUnavailable(LibFunc_acosf);
254       TLI.setUnavailable(LibFunc_asinf);
255       TLI.setUnavailable(LibFunc_atan2f);
256       TLI.setUnavailable(LibFunc_atanf);
257       TLI.setUnavailable(LibFunc_ceilf);
258       TLI.setUnavailable(LibFunc_cosf);
259       TLI.setUnavailable(LibFunc_coshf);
260       TLI.setUnavailable(LibFunc_expf);
261       TLI.setUnavailable(LibFunc_floorf);
262       TLI.setUnavailable(LibFunc_fmodf);
263       TLI.setUnavailable(LibFunc_log10f);
264       TLI.setUnavailable(LibFunc_logf);
265       TLI.setUnavailable(LibFunc_modff);
266       TLI.setUnavailable(LibFunc_powf);
267       TLI.setUnavailable(LibFunc_remainderf);
268       TLI.setUnavailable(LibFunc_sinf);
269       TLI.setUnavailable(LibFunc_sinhf);
270       TLI.setUnavailable(LibFunc_sqrtf);
271       TLI.setUnavailable(LibFunc_tanf);
272       TLI.setUnavailable(LibFunc_tanhf);
273     }
274     if (!isARM)
275       TLI.setUnavailable(LibFunc_fabsf);
276     TLI.setUnavailable(LibFunc_frexpf);
277     TLI.setUnavailable(LibFunc_ldexpf);
278 
279     // Win32 does not support long double C89 math functions.
280     TLI.setUnavailable(LibFunc_acosl);
281     TLI.setUnavailable(LibFunc_asinl);
282     TLI.setUnavailable(LibFunc_atan2l);
283     TLI.setUnavailable(LibFunc_atanl);
284     TLI.setUnavailable(LibFunc_ceill);
285     TLI.setUnavailable(LibFunc_cosl);
286     TLI.setUnavailable(LibFunc_coshl);
287     TLI.setUnavailable(LibFunc_expl);
288     TLI.setUnavailable(LibFunc_fabsl);
289     TLI.setUnavailable(LibFunc_floorl);
290     TLI.setUnavailable(LibFunc_fmodl);
291     TLI.setUnavailable(LibFunc_frexpl);
292     TLI.setUnavailable(LibFunc_ldexpl);
293     TLI.setUnavailable(LibFunc_log10l);
294     TLI.setUnavailable(LibFunc_logl);
295     TLI.setUnavailable(LibFunc_modfl);
296     TLI.setUnavailable(LibFunc_powl);
297     TLI.setUnavailable(LibFunc_remainderl);
298     TLI.setUnavailable(LibFunc_sinl);
299     TLI.setUnavailable(LibFunc_sinhl);
300     TLI.setUnavailable(LibFunc_sqrtl);
301     TLI.setUnavailable(LibFunc_tanl);
302     TLI.setUnavailable(LibFunc_tanhl);
303 
304     // Win32 does not fully support C99 math functions.
305     if (!hasPartialC99) {
306       TLI.setUnavailable(LibFunc_acosh);
307       TLI.setUnavailable(LibFunc_acoshf);
308       TLI.setUnavailable(LibFunc_asinh);
309       TLI.setUnavailable(LibFunc_asinhf);
310       TLI.setUnavailable(LibFunc_atanh);
311       TLI.setUnavailable(LibFunc_atanhf);
312       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
313       TLI.setUnavailable(LibFunc_cabsf);
314       TLI.setUnavailable(LibFunc_cbrt);
315       TLI.setUnavailable(LibFunc_cbrtf);
316       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
317       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
318       TLI.setUnavailable(LibFunc_exp2);
319       TLI.setUnavailable(LibFunc_exp2f);
320       TLI.setUnavailable(LibFunc_expm1);
321       TLI.setUnavailable(LibFunc_expm1f);
322       TLI.setUnavailable(LibFunc_fmax);
323       TLI.setUnavailable(LibFunc_fmaxf);
324       TLI.setUnavailable(LibFunc_fmin);
325       TLI.setUnavailable(LibFunc_fminf);
326       TLI.setUnavailable(LibFunc_log1p);
327       TLI.setUnavailable(LibFunc_log1pf);
328       TLI.setUnavailable(LibFunc_log2);
329       TLI.setUnavailable(LibFunc_log2f);
330       TLI.setAvailableWithName(LibFunc_logb, "_logb");
331       if (hasPartialFloat)
332         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
333       else
334         TLI.setUnavailable(LibFunc_logbf);
335       TLI.setUnavailable(LibFunc_rint);
336       TLI.setUnavailable(LibFunc_rintf);
337       TLI.setUnavailable(LibFunc_round);
338       TLI.setUnavailable(LibFunc_roundf);
339       TLI.setUnavailable(LibFunc_trunc);
340       TLI.setUnavailable(LibFunc_truncf);
341     }
342 
343     // Win32 does not support long double C99 math functions.
344     TLI.setUnavailable(LibFunc_acoshl);
345     TLI.setUnavailable(LibFunc_asinhl);
346     TLI.setUnavailable(LibFunc_atanhl);
347     TLI.setUnavailable(LibFunc_cabsl);
348     TLI.setUnavailable(LibFunc_cbrtl);
349     TLI.setUnavailable(LibFunc_copysignl);
350     TLI.setUnavailable(LibFunc_exp2l);
351     TLI.setUnavailable(LibFunc_expm1l);
352     TLI.setUnavailable(LibFunc_fmaxl);
353     TLI.setUnavailable(LibFunc_fminl);
354     TLI.setUnavailable(LibFunc_log1pl);
355     TLI.setUnavailable(LibFunc_log2l);
356     TLI.setUnavailable(LibFunc_logbl);
357     TLI.setUnavailable(LibFunc_nearbyintl);
358     TLI.setUnavailable(LibFunc_rintl);
359     TLI.setUnavailable(LibFunc_roundl);
360     TLI.setUnavailable(LibFunc_truncl);
361 
362     // Win32 does not support these functions, but
363     // they are generally available on POSIX-compliant systems.
364     TLI.setUnavailable(LibFunc_access);
365     TLI.setUnavailable(LibFunc_chmod);
366     TLI.setUnavailable(LibFunc_closedir);
367     TLI.setUnavailable(LibFunc_fdopen);
368     TLI.setUnavailable(LibFunc_fileno);
369     TLI.setUnavailable(LibFunc_fseeko);
370     TLI.setUnavailable(LibFunc_fstat);
371     TLI.setUnavailable(LibFunc_ftello);
372     TLI.setUnavailable(LibFunc_gettimeofday);
373     TLI.setUnavailable(LibFunc_memccpy);
374     TLI.setUnavailable(LibFunc_mkdir);
375     TLI.setUnavailable(LibFunc_open);
376     TLI.setUnavailable(LibFunc_opendir);
377     TLI.setUnavailable(LibFunc_pclose);
378     TLI.setUnavailable(LibFunc_popen);
379     TLI.setUnavailable(LibFunc_read);
380     TLI.setUnavailable(LibFunc_rmdir);
381     TLI.setUnavailable(LibFunc_stat);
382     TLI.setUnavailable(LibFunc_strcasecmp);
383     TLI.setUnavailable(LibFunc_strncasecmp);
384     TLI.setUnavailable(LibFunc_unlink);
385     TLI.setUnavailable(LibFunc_utime);
386     TLI.setUnavailable(LibFunc_write);
387   }
388 
389   if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) {
390     // These functions aren't available in either MSVC or MinGW environments.
391     TLI.setUnavailable(LibFunc_bcmp);
392     TLI.setUnavailable(LibFunc_bcopy);
393     TLI.setUnavailable(LibFunc_bzero);
394     TLI.setUnavailable(LibFunc_chown);
395     TLI.setUnavailable(LibFunc_ctermid);
396     TLI.setUnavailable(LibFunc_ffs);
397     TLI.setUnavailable(LibFunc_flockfile);
398     TLI.setUnavailable(LibFunc_fstatvfs);
399     TLI.setUnavailable(LibFunc_ftrylockfile);
400     TLI.setUnavailable(LibFunc_funlockfile);
401     TLI.setUnavailable(LibFunc_getitimer);
402     TLI.setUnavailable(LibFunc_getlogin_r);
403     TLI.setUnavailable(LibFunc_getpwnam);
404     TLI.setUnavailable(LibFunc_htonl);
405     TLI.setUnavailable(LibFunc_htons);
406     TLI.setUnavailable(LibFunc_lchown);
407     TLI.setUnavailable(LibFunc_lstat);
408     TLI.setUnavailable(LibFunc_ntohl);
409     TLI.setUnavailable(LibFunc_ntohs);
410     TLI.setUnavailable(LibFunc_pread);
411     TLI.setUnavailable(LibFunc_pwrite);
412     TLI.setUnavailable(LibFunc_readlink);
413     TLI.setUnavailable(LibFunc_realpath);
414     TLI.setUnavailable(LibFunc_setitimer);
415     TLI.setUnavailable(LibFunc_statvfs);
416     TLI.setUnavailable(LibFunc_stpcpy);
417     TLI.setUnavailable(LibFunc_stpncpy);
418     TLI.setUnavailable(LibFunc_times);
419     TLI.setUnavailable(LibFunc_uname);
420     TLI.setUnavailable(LibFunc_unsetenv);
421     TLI.setUnavailable(LibFunc_utimes);
422   }
423 
424   // Pick just one set of new/delete variants.
425   if (T.isOSMSVCRT()) {
426     // MSVC, doesn't have the Itanium new/delete.
427     TLI.setUnavailable(LibFunc_ZdaPv);
428     TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t);
429     TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t);
430     TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t);
431     TLI.setUnavailable(LibFunc_ZdaPvj);
432     TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
433     TLI.setUnavailable(LibFunc_ZdaPvm);
434     TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t);
435     TLI.setUnavailable(LibFunc_ZdlPv);
436     TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t);
437     TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t);
438     TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t);
439     TLI.setUnavailable(LibFunc_ZdlPvj);
440     TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
441     TLI.setUnavailable(LibFunc_ZdlPvm);
442     TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t);
443     TLI.setUnavailable(LibFunc_Znaj);
444     TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
445     TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
446     TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
447     TLI.setUnavailable(LibFunc_Znam);
448     TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t);
449     TLI.setUnavailable(LibFunc_ZnamSt11align_val_t);
450     TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t);
451     TLI.setUnavailable(LibFunc_Znwj);
452     TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
453     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
454     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
455     TLI.setUnavailable(LibFunc_Znwm);
456     TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t);
457     TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t);
458     TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t);
459   } else {
460     // Not MSVC, assume it's Itanium.
461     TLI.setUnavailable(LibFunc_msvc_new_int);
462     TLI.setUnavailable(LibFunc_msvc_new_int_nothrow);
463     TLI.setUnavailable(LibFunc_msvc_new_longlong);
464     TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow);
465     TLI.setUnavailable(LibFunc_msvc_delete_ptr32);
466     TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow);
467     TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int);
468     TLI.setUnavailable(LibFunc_msvc_delete_ptr64);
469     TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow);
470     TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong);
471     TLI.setUnavailable(LibFunc_msvc_new_array_int);
472     TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow);
473     TLI.setUnavailable(LibFunc_msvc_new_array_longlong);
474     TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow);
475     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32);
476     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow);
477     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int);
478     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64);
479     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow);
480     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong);
481   }
482 
483   switch (T.getOS()) {
484   case Triple::MacOSX:
485     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
486     // and their names are __exp10 and __exp10f. exp10l is not available on
487     // OS X or iOS.
488     TLI.setUnavailable(LibFunc_exp10l);
489     if (T.isMacOSXVersionLT(10, 9)) {
490       TLI.setUnavailable(LibFunc_exp10);
491       TLI.setUnavailable(LibFunc_exp10f);
492     } else {
493       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
494       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
495     }
496     break;
497   case Triple::IOS:
498   case Triple::TvOS:
499   case Triple::WatchOS:
500     TLI.setUnavailable(LibFunc_exp10l);
501     if (!T.isWatchOS() &&
502         (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
503       TLI.setUnavailable(LibFunc_exp10);
504       TLI.setUnavailable(LibFunc_exp10f);
505     } else {
506       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
507       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
508     }
509     break;
510   case Triple::Linux:
511     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
512     // buggy prior to glibc version 2.18. Until this version is widely deployed
513     // or we have a reasonable detection strategy, we cannot use exp10 reliably
514     // on Linux.
515     //
516     // Fall through to disable all of them.
517     LLVM_FALLTHROUGH;
518   default:
519     TLI.setUnavailable(LibFunc_exp10);
520     TLI.setUnavailable(LibFunc_exp10f);
521     TLI.setUnavailable(LibFunc_exp10l);
522   }
523 
524   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
525   // Linux (GLIBC):
526   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
527   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
528   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
529   switch (T.getOS()) {
530   case Triple::Darwin:
531   case Triple::MacOSX:
532   case Triple::IOS:
533   case Triple::TvOS:
534   case Triple::WatchOS:
535   case Triple::FreeBSD:
536   case Triple::Linux:
537     break;
538   default:
539     TLI.setUnavailable(LibFunc_ffsl);
540   }
541 
542   // ffsll is available on at least FreeBSD and Linux (GLIBC):
543   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
544   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
545   switch (T.getOS()) {
546   case Triple::Darwin:
547   case Triple::MacOSX:
548   case Triple::IOS:
549   case Triple::TvOS:
550   case Triple::WatchOS:
551   case Triple::FreeBSD:
552   case Triple::Linux:
553     break;
554   default:
555     TLI.setUnavailable(LibFunc_ffsll);
556   }
557 
558   // The following functions are available on at least FreeBSD:
559   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
560   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
561   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
562   if (!T.isOSFreeBSD()) {
563     TLI.setUnavailable(LibFunc_fls);
564     TLI.setUnavailable(LibFunc_flsl);
565     TLI.setUnavailable(LibFunc_flsll);
566   }
567 
568   // The following functions are only available on GNU/Linux (using glibc).
569   // Linux variants without glibc (eg: bionic, musl) may have some subset.
570   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
571     TLI.setUnavailable(LibFunc_dunder_strdup);
572     TLI.setUnavailable(LibFunc_dunder_strtok_r);
573     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
574     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
575     TLI.setUnavailable(LibFunc_under_IO_getc);
576     TLI.setUnavailable(LibFunc_under_IO_putc);
577     // But, Android and musl have memalign.
578     if (!T.isAndroid() && !T.isMusl())
579       TLI.setUnavailable(LibFunc_memalign);
580     TLI.setUnavailable(LibFunc_fopen64);
581     TLI.setUnavailable(LibFunc_fseeko64);
582     TLI.setUnavailable(LibFunc_fstat64);
583     TLI.setUnavailable(LibFunc_fstatvfs64);
584     TLI.setUnavailable(LibFunc_ftello64);
585     TLI.setUnavailable(LibFunc_lstat64);
586     TLI.setUnavailable(LibFunc_open64);
587     TLI.setUnavailable(LibFunc_stat64);
588     TLI.setUnavailable(LibFunc_statvfs64);
589     TLI.setUnavailable(LibFunc_tmpfile64);
590 
591     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
592     // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
593     // so we keep these functions around just so that they're recognized by
594     // the ConstantFolder.
595     TLI.setUnavailable(LibFunc_acos_finite);
596     TLI.setUnavailable(LibFunc_acosf_finite);
597     TLI.setUnavailable(LibFunc_acosl_finite);
598     TLI.setUnavailable(LibFunc_acosh_finite);
599     TLI.setUnavailable(LibFunc_acoshf_finite);
600     TLI.setUnavailable(LibFunc_acoshl_finite);
601     TLI.setUnavailable(LibFunc_asin_finite);
602     TLI.setUnavailable(LibFunc_asinf_finite);
603     TLI.setUnavailable(LibFunc_asinl_finite);
604     TLI.setUnavailable(LibFunc_atan2_finite);
605     TLI.setUnavailable(LibFunc_atan2f_finite);
606     TLI.setUnavailable(LibFunc_atan2l_finite);
607     TLI.setUnavailable(LibFunc_atanh_finite);
608     TLI.setUnavailable(LibFunc_atanhf_finite);
609     TLI.setUnavailable(LibFunc_atanhl_finite);
610     TLI.setUnavailable(LibFunc_cosh_finite);
611     TLI.setUnavailable(LibFunc_coshf_finite);
612     TLI.setUnavailable(LibFunc_coshl_finite);
613     TLI.setUnavailable(LibFunc_exp10_finite);
614     TLI.setUnavailable(LibFunc_exp10f_finite);
615     TLI.setUnavailable(LibFunc_exp10l_finite);
616     TLI.setUnavailable(LibFunc_exp2_finite);
617     TLI.setUnavailable(LibFunc_exp2f_finite);
618     TLI.setUnavailable(LibFunc_exp2l_finite);
619     TLI.setUnavailable(LibFunc_exp_finite);
620     TLI.setUnavailable(LibFunc_expf_finite);
621     TLI.setUnavailable(LibFunc_expl_finite);
622     TLI.setUnavailable(LibFunc_log10_finite);
623     TLI.setUnavailable(LibFunc_log10f_finite);
624     TLI.setUnavailable(LibFunc_log10l_finite);
625     TLI.setUnavailable(LibFunc_log2_finite);
626     TLI.setUnavailable(LibFunc_log2f_finite);
627     TLI.setUnavailable(LibFunc_log2l_finite);
628     TLI.setUnavailable(LibFunc_log_finite);
629     TLI.setUnavailable(LibFunc_logf_finite);
630     TLI.setUnavailable(LibFunc_logl_finite);
631     TLI.setUnavailable(LibFunc_pow_finite);
632     TLI.setUnavailable(LibFunc_powf_finite);
633     TLI.setUnavailable(LibFunc_powl_finite);
634     TLI.setUnavailable(LibFunc_sinh_finite);
635     TLI.setUnavailable(LibFunc_sinhf_finite);
636     TLI.setUnavailable(LibFunc_sinhl_finite);
637     TLI.setUnavailable(LibFunc_sqrt_finite);
638     TLI.setUnavailable(LibFunc_sqrtf_finite);
639     TLI.setUnavailable(LibFunc_sqrtl_finite);
640   }
641 
642   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
643       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
644     // available IO unlocked variants on GNU/Linux and Android P or later
645     TLI.setAvailable(LibFunc_getc_unlocked);
646     TLI.setAvailable(LibFunc_getchar_unlocked);
647     TLI.setAvailable(LibFunc_putc_unlocked);
648     TLI.setAvailable(LibFunc_putchar_unlocked);
649     TLI.setAvailable(LibFunc_fputc_unlocked);
650     TLI.setAvailable(LibFunc_fgetc_unlocked);
651     TLI.setAvailable(LibFunc_fread_unlocked);
652     TLI.setAvailable(LibFunc_fwrite_unlocked);
653     TLI.setAvailable(LibFunc_fputs_unlocked);
654     TLI.setAvailable(LibFunc_fgets_unlocked);
655   }
656 
657   if (T.isAndroid() && T.isAndroidVersionLT(21)) {
658     TLI.setUnavailable(LibFunc_stpcpy);
659     TLI.setUnavailable(LibFunc_stpncpy);
660   }
661 
662   if (T.isPS()) {
663     // PS4/PS5 do have memalign.
664     TLI.setAvailable(LibFunc_memalign);
665 
666     // PS4/PS5 do not have new/delete with "unsigned int" size parameter;
667     // they only have the "unsigned long" versions.
668     TLI.setUnavailable(LibFunc_ZdaPvj);
669     TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
670     TLI.setUnavailable(LibFunc_ZdlPvj);
671     TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
672     TLI.setUnavailable(LibFunc_Znaj);
673     TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
674     TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
675     TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
676     TLI.setUnavailable(LibFunc_Znwj);
677     TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
678     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
679     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
680 
681     // None of the *_chk functions.
682     TLI.setUnavailable(LibFunc_memccpy_chk);
683     TLI.setUnavailable(LibFunc_memcpy_chk);
684     TLI.setUnavailable(LibFunc_memmove_chk);
685     TLI.setUnavailable(LibFunc_mempcpy_chk);
686     TLI.setUnavailable(LibFunc_memset_chk);
687     TLI.setUnavailable(LibFunc_snprintf_chk);
688     TLI.setUnavailable(LibFunc_sprintf_chk);
689     TLI.setUnavailable(LibFunc_stpcpy_chk);
690     TLI.setUnavailable(LibFunc_stpncpy_chk);
691     TLI.setUnavailable(LibFunc_strcat_chk);
692     TLI.setUnavailable(LibFunc_strcpy_chk);
693     TLI.setUnavailable(LibFunc_strlcat_chk);
694     TLI.setUnavailable(LibFunc_strlcpy_chk);
695     TLI.setUnavailable(LibFunc_strlen_chk);
696     TLI.setUnavailable(LibFunc_strncat_chk);
697     TLI.setUnavailable(LibFunc_strncpy_chk);
698     TLI.setUnavailable(LibFunc_vsnprintf_chk);
699     TLI.setUnavailable(LibFunc_vsprintf_chk);
700 
701     // Various Posix system functions.
702     TLI.setUnavailable(LibFunc_access);
703     TLI.setUnavailable(LibFunc_chmod);
704     TLI.setUnavailable(LibFunc_chown);
705     TLI.setUnavailable(LibFunc_closedir);
706     TLI.setUnavailable(LibFunc_ctermid);
707     TLI.setUnavailable(LibFunc_execl);
708     TLI.setUnavailable(LibFunc_execle);
709     TLI.setUnavailable(LibFunc_execlp);
710     TLI.setUnavailable(LibFunc_execv);
711     TLI.setUnavailable(LibFunc_execvP);
712     TLI.setUnavailable(LibFunc_execve);
713     TLI.setUnavailable(LibFunc_execvp);
714     TLI.setUnavailable(LibFunc_execvpe);
715     TLI.setUnavailable(LibFunc_fork);
716     TLI.setUnavailable(LibFunc_fstat);
717     TLI.setUnavailable(LibFunc_fstatvfs);
718     TLI.setUnavailable(LibFunc_getenv);
719     TLI.setUnavailable(LibFunc_getitimer);
720     TLI.setUnavailable(LibFunc_getlogin_r);
721     TLI.setUnavailable(LibFunc_getpwnam);
722     TLI.setUnavailable(LibFunc_gettimeofday);
723     TLI.setUnavailable(LibFunc_lchown);
724     TLI.setUnavailable(LibFunc_lstat);
725     TLI.setUnavailable(LibFunc_mkdir);
726     TLI.setUnavailable(LibFunc_open);
727     TLI.setUnavailable(LibFunc_opendir);
728     TLI.setUnavailable(LibFunc_pclose);
729     TLI.setUnavailable(LibFunc_popen);
730     TLI.setUnavailable(LibFunc_pread);
731     TLI.setUnavailable(LibFunc_pwrite);
732     TLI.setUnavailable(LibFunc_read);
733     TLI.setUnavailable(LibFunc_readlink);
734     TLI.setUnavailable(LibFunc_realpath);
735     TLI.setUnavailable(LibFunc_rename);
736     TLI.setUnavailable(LibFunc_rmdir);
737     TLI.setUnavailable(LibFunc_setitimer);
738     TLI.setUnavailable(LibFunc_stat);
739     TLI.setUnavailable(LibFunc_statvfs);
740     TLI.setUnavailable(LibFunc_system);
741     TLI.setUnavailable(LibFunc_times);
742     TLI.setUnavailable(LibFunc_tmpfile);
743     TLI.setUnavailable(LibFunc_unlink);
744     TLI.setUnavailable(LibFunc_uname);
745     TLI.setUnavailable(LibFunc_unsetenv);
746     TLI.setUnavailable(LibFunc_utime);
747     TLI.setUnavailable(LibFunc_utimes);
748     TLI.setUnavailable(LibFunc_valloc);
749     TLI.setUnavailable(LibFunc_write);
750 
751     // Miscellaneous other functions not provided.
752     TLI.setUnavailable(LibFunc_atomic_load);
753     TLI.setUnavailable(LibFunc_atomic_store);
754     TLI.setUnavailable(LibFunc___kmpc_alloc_shared);
755     TLI.setUnavailable(LibFunc___kmpc_free_shared);
756     TLI.setUnavailable(LibFunc_dunder_strndup);
757     TLI.setUnavailable(LibFunc_bcmp);
758     TLI.setUnavailable(LibFunc_bcopy);
759     TLI.setUnavailable(LibFunc_bzero);
760     TLI.setUnavailable(LibFunc_cabs);
761     TLI.setUnavailable(LibFunc_cabsf);
762     TLI.setUnavailable(LibFunc_cabsl);
763     TLI.setUnavailable(LibFunc_ffs);
764     TLI.setUnavailable(LibFunc_flockfile);
765     TLI.setUnavailable(LibFunc_fseeko);
766     TLI.setUnavailable(LibFunc_ftello);
767     TLI.setUnavailable(LibFunc_ftrylockfile);
768     TLI.setUnavailable(LibFunc_funlockfile);
769     TLI.setUnavailable(LibFunc_htonl);
770     TLI.setUnavailable(LibFunc_htons);
771     TLI.setUnavailable(LibFunc_isascii);
772     TLI.setUnavailable(LibFunc_memccpy);
773     TLI.setUnavailable(LibFunc_mempcpy);
774     TLI.setUnavailable(LibFunc_memrchr);
775     TLI.setUnavailable(LibFunc_ntohl);
776     TLI.setUnavailable(LibFunc_ntohs);
777     TLI.setUnavailable(LibFunc_reallocf);
778     TLI.setUnavailable(LibFunc_roundeven);
779     TLI.setUnavailable(LibFunc_roundevenf);
780     TLI.setUnavailable(LibFunc_roundevenl);
781     TLI.setUnavailable(LibFunc_stpcpy);
782     TLI.setUnavailable(LibFunc_stpncpy);
783     TLI.setUnavailable(LibFunc_strlcat);
784     TLI.setUnavailable(LibFunc_strlcpy);
785     TLI.setUnavailable(LibFunc_strndup);
786     TLI.setUnavailable(LibFunc_strnlen);
787     TLI.setUnavailable(LibFunc_toascii);
788   }
789 
790   // As currently implemented in clang, NVPTX code has no standard library to
791   // speak of.  Headers provide a standard-ish library implementation, but many
792   // of the signatures are wrong -- for example, many libm functions are not
793   // extern "C".
794   //
795   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
796   // but only used functions are provided to llvm.  Moreover, most of the
797   // functions in libdevice don't map precisely to standard library functions.
798   //
799   // FIXME: Having no standard library prevents e.g. many fastmath
800   // optimizations, so this situation should be fixed.
801   if (T.isNVPTX()) {
802     TLI.disableAllFunctions();
803     TLI.setAvailable(LibFunc_nvvm_reflect);
804     TLI.setAvailable(llvm::LibFunc_malloc);
805     TLI.setAvailable(llvm::LibFunc_free);
806 
807     // TODO: We could enable the following two according to [0] but we haven't
808     //       done an evaluation wrt. the performance implications.
809     // [0]
810     // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations
811     //
812     //    TLI.setAvailable(llvm::LibFunc_memcpy);
813     //    TLI.setAvailable(llvm::LibFunc_memset);
814 
815     TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
816     TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
817   } else {
818     TLI.setUnavailable(LibFunc_nvvm_reflect);
819   }
820 
821   // These vec_malloc/free routines are only available on AIX.
822   if (!T.isOSAIX()) {
823     TLI.setUnavailable(LibFunc_vec_calloc);
824     TLI.setUnavailable(LibFunc_vec_malloc);
825     TLI.setUnavailable(LibFunc_vec_realloc);
826     TLI.setUnavailable(LibFunc_vec_free);
827   }
828 
829   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
830 }
831 
TargetLibraryInfoImpl()832 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
833   // Default to everything being available.
834   memset(AvailableArray, -1, sizeof(AvailableArray));
835 
836   initialize(*this, Triple(), StandardNames);
837 }
838 
TargetLibraryInfoImpl(const Triple & T)839 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
840   // Default to everything being available.
841   memset(AvailableArray, -1, sizeof(AvailableArray));
842 
843   initialize(*this, T, StandardNames);
844 }
845 
TargetLibraryInfoImpl(const TargetLibraryInfoImpl & TLI)846 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
847     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
848       ShouldExtI32Return(TLI.ShouldExtI32Return),
849       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
850       SizeOfInt(TLI.SizeOfInt) {
851   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
852   VectorDescs = TLI.VectorDescs;
853   ScalarDescs = TLI.ScalarDescs;
854 }
855 
TargetLibraryInfoImpl(TargetLibraryInfoImpl && TLI)856 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
857     : CustomNames(std::move(TLI.CustomNames)),
858       ShouldExtI32Param(TLI.ShouldExtI32Param),
859       ShouldExtI32Return(TLI.ShouldExtI32Return),
860       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
861       SizeOfInt(TLI.SizeOfInt) {
862   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
863             AvailableArray);
864   VectorDescs = TLI.VectorDescs;
865   ScalarDescs = TLI.ScalarDescs;
866 }
867 
operator =(const TargetLibraryInfoImpl & TLI)868 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
869   CustomNames = TLI.CustomNames;
870   ShouldExtI32Param = TLI.ShouldExtI32Param;
871   ShouldExtI32Return = TLI.ShouldExtI32Return;
872   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
873   SizeOfInt = TLI.SizeOfInt;
874   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
875   return *this;
876 }
877 
operator =(TargetLibraryInfoImpl && TLI)878 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
879   CustomNames = std::move(TLI.CustomNames);
880   ShouldExtI32Param = TLI.ShouldExtI32Param;
881   ShouldExtI32Return = TLI.ShouldExtI32Return;
882   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
883   SizeOfInt = TLI.SizeOfInt;
884   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
885             AvailableArray);
886   return *this;
887 }
888 
sanitizeFunctionName(StringRef funcName)889 static StringRef sanitizeFunctionName(StringRef funcName) {
890   // Filter out empty names and names containing null bytes, those can't be in
891   // our table.
892   if (funcName.empty() || funcName.contains('\0'))
893     return StringRef();
894 
895   // Check for \01 prefix that is used to mangle __asm declarations and
896   // strip it if present.
897   return GlobalValue::dropLLVMManglingEscape(funcName);
898 }
899 
getLibFunc(StringRef funcName,LibFunc & F) const900 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
901   funcName = sanitizeFunctionName(funcName);
902   if (funcName.empty())
903     return false;
904 
905   const auto *Start = std::begin(StandardNames);
906   const auto *End = std::end(StandardNames);
907   const auto *I = std::lower_bound(Start, End, funcName);
908   if (I != End && *I == funcName) {
909     F = (LibFunc)(I - Start);
910     return true;
911   }
912   return false;
913 }
914 
isValidProtoForLibFunc(const FunctionType & FTy,LibFunc F,const Module & M) const915 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
916                                                    LibFunc F,
917                                                    const Module &M) const {
918   // FIXME: There is really no guarantee that sizeof(size_t) is equal to
919   // sizeof(int*) for every target. So the assumption used here to derive the
920   // SizeTBits based on the size of an integer pointer in address space zero
921   // isn't always valid.
922   unsigned SizeTBits = M.getDataLayout().getPointerSizeInBits(/*AddrSpace=*/0);
923   unsigned NumParams = FTy.getNumParams();
924 
925   switch (F) {
926   case LibFunc_execl:
927   case LibFunc_execlp:
928   case LibFunc_execle:
929     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
930             FTy.getParamType(1)->isPointerTy() &&
931             FTy.getReturnType()->isIntegerTy(32));
932   case LibFunc_execv:
933   case LibFunc_execvp:
934     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
935             FTy.getParamType(1)->isPointerTy() &&
936             FTy.getReturnType()->isIntegerTy(32));
937   case LibFunc_execvP:
938   case LibFunc_execvpe:
939   case LibFunc_execve:
940     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
941             FTy.getParamType(1)->isPointerTy() &&
942             FTy.getParamType(2)->isPointerTy() &&
943             FTy.getReturnType()->isIntegerTy(32));
944   case LibFunc_strlen_chk:
945     --NumParams;
946     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
947       return false;
948     LLVM_FALLTHROUGH;
949   case LibFunc_strlen:
950     return NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
951            FTy.getReturnType()->isIntegerTy(SizeTBits);
952 
953   case LibFunc_strchr:
954   case LibFunc_strrchr:
955     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
956             FTy.getParamType(0) == FTy.getReturnType() &&
957             FTy.getParamType(1)->isIntegerTy());
958 
959   case LibFunc_strtol:
960   case LibFunc_strtod:
961   case LibFunc_strtof:
962   case LibFunc_strtoul:
963   case LibFunc_strtoll:
964   case LibFunc_strtold:
965   case LibFunc_strtoull:
966     return ((NumParams == 2 || NumParams == 3) &&
967             FTy.getParamType(0)->isPointerTy() &&
968             FTy.getParamType(1)->isPointerTy());
969   case LibFunc_strcat_chk:
970     --NumParams;
971     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
972       return false;
973     LLVM_FALLTHROUGH;
974   case LibFunc_strcat:
975     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
976             FTy.getParamType(0) == FTy.getReturnType() &&
977             FTy.getParamType(1) == FTy.getReturnType());
978 
979   case LibFunc_strncat_chk:
980     --NumParams;
981     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
982       return false;
983     LLVM_FALLTHROUGH;
984   case LibFunc_strncat:
985     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
986             FTy.getParamType(0) == FTy.getReturnType() &&
987             FTy.getParamType(1) == FTy.getReturnType() &&
988             FTy.getParamType(2)->isIntegerTy(SizeTBits));
989 
990   case LibFunc_strcpy_chk:
991   case LibFunc_stpcpy_chk:
992     --NumParams;
993     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
994       return false;
995     LLVM_FALLTHROUGH;
996   case LibFunc_strcpy:
997   case LibFunc_stpcpy:
998     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
999             FTy.getParamType(0) == FTy.getParamType(1) &&
1000             FTy.getParamType(0)->isPointerTy());
1001 
1002   case LibFunc_strlcat_chk:
1003   case LibFunc_strlcpy_chk:
1004     --NumParams;
1005     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
1006       return false;
1007     LLVM_FALLTHROUGH;
1008   case LibFunc_strlcat:
1009   case LibFunc_strlcpy:
1010     return NumParams == 3 && FTy.getReturnType()->isIntegerTy(SizeTBits) &&
1011            FTy.getParamType(0)->isPointerTy() &&
1012            FTy.getParamType(1)->isPointerTy() &&
1013            FTy.getParamType(2)->isIntegerTy(SizeTBits);
1014 
1015   case LibFunc_strncpy_chk:
1016   case LibFunc_stpncpy_chk:
1017     --NumParams;
1018     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
1019       return false;
1020     LLVM_FALLTHROUGH;
1021   case LibFunc_strncpy:
1022   case LibFunc_stpncpy:
1023     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
1024             FTy.getParamType(0) == FTy.getParamType(1) &&
1025             FTy.getParamType(0)->isPointerTy() &&
1026             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1027 
1028   case LibFunc_strxfrm:
1029     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1030             FTy.getParamType(1)->isPointerTy());
1031 
1032   case LibFunc_strcmp:
1033     return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
1034             FTy.getParamType(0)->isPointerTy() &&
1035             FTy.getParamType(0) == FTy.getParamType(1));
1036 
1037   case LibFunc_strncmp:
1038     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1039             FTy.getParamType(0)->isPointerTy() &&
1040             FTy.getParamType(0) == FTy.getParamType(1) &&
1041             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1042 
1043   case LibFunc_strspn:
1044   case LibFunc_strcspn:
1045     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1046             FTy.getParamType(0) == FTy.getParamType(1) &&
1047             FTy.getReturnType()->isIntegerTy());
1048 
1049   case LibFunc_strcoll:
1050   case LibFunc_strcasecmp:
1051   case LibFunc_strncasecmp:
1052     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1053             FTy.getParamType(1)->isPointerTy());
1054 
1055   case LibFunc_strstr:
1056     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1057             FTy.getParamType(0)->isPointerTy() &&
1058             FTy.getParamType(1)->isPointerTy());
1059 
1060   case LibFunc_strpbrk:
1061     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1062             FTy.getReturnType() == FTy.getParamType(0) &&
1063             FTy.getParamType(0) == FTy.getParamType(1));
1064 
1065   case LibFunc_strtok:
1066   case LibFunc_strtok_r:
1067     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
1068   case LibFunc_scanf:
1069   case LibFunc_setbuf:
1070   case LibFunc_setvbuf:
1071     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1072   case LibFunc_strdup:
1073   case LibFunc_strndup:
1074     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1075             FTy.getParamType(0)->isPointerTy());
1076   case LibFunc_sscanf:
1077   case LibFunc_stat:
1078   case LibFunc_statvfs:
1079   case LibFunc_siprintf:
1080   case LibFunc_small_sprintf:
1081   case LibFunc_sprintf:
1082     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1083             FTy.getParamType(1)->isPointerTy() &&
1084             FTy.getReturnType()->isIntegerTy(32));
1085 
1086   case LibFunc_sprintf_chk:
1087     return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1088            FTy.getParamType(1)->isIntegerTy(32) &&
1089            FTy.getParamType(2)->isIntegerTy(SizeTBits) &&
1090            FTy.getParamType(3)->isPointerTy() &&
1091            FTy.getReturnType()->isIntegerTy(32);
1092 
1093   case LibFunc_snprintf:
1094     return NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1095            FTy.getParamType(1)->isIntegerTy(SizeTBits) &&
1096            FTy.getParamType(2)->isPointerTy() &&
1097            FTy.getReturnType()->isIntegerTy(32);
1098 
1099   case LibFunc_snprintf_chk:
1100     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1101            FTy.getParamType(1)->isIntegerTy(SizeTBits) &&
1102            FTy.getParamType(2)->isIntegerTy(32) &&
1103            FTy.getParamType(3)->isIntegerTy(SizeTBits) &&
1104            FTy.getParamType(4)->isPointerTy() &&
1105            FTy.getReturnType()->isIntegerTy(32);
1106 
1107   case LibFunc_setitimer:
1108     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1109             FTy.getParamType(2)->isPointerTy());
1110   case LibFunc_system:
1111     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1112   case LibFunc___kmpc_alloc_shared:
1113     return NumParams == 1 && FTy.getReturnType()->isPointerTy();
1114   case LibFunc_malloc:
1115   case LibFunc_vec_malloc:
1116     return NumParams == 1 && FTy.getParamType(0)->isIntegerTy(SizeTBits) &&
1117            FTy.getReturnType()->isPointerTy();
1118   case LibFunc_memcmp:
1119     return NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1120            FTy.getParamType(0)->isPointerTy() &&
1121            FTy.getParamType(1)->isPointerTy() &&
1122            FTy.getParamType(2)->isIntegerTy(SizeTBits);
1123 
1124   case LibFunc_memchr:
1125   case LibFunc_memrchr:
1126     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
1127             FTy.getReturnType() == FTy.getParamType(0) &&
1128             FTy.getParamType(1)->isIntegerTy(32) &&
1129             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1130   case LibFunc_modf:
1131   case LibFunc_modff:
1132   case LibFunc_modfl:
1133     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
1134 
1135   case LibFunc_memcpy_chk:
1136   case LibFunc_mempcpy_chk:
1137   case LibFunc_memmove_chk:
1138     --NumParams;
1139     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
1140       return false;
1141     LLVM_FALLTHROUGH;
1142   case LibFunc_memcpy:
1143   case LibFunc_mempcpy:
1144   case LibFunc_memmove:
1145     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
1146             FTy.getParamType(0)->isPointerTy() &&
1147             FTy.getParamType(1)->isPointerTy() &&
1148             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1149 
1150   case LibFunc_memset_chk:
1151     --NumParams;
1152     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
1153       return false;
1154     LLVM_FALLTHROUGH;
1155   case LibFunc_memset:
1156     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
1157             FTy.getParamType(0)->isPointerTy() &&
1158             FTy.getParamType(1)->isIntegerTy() &&
1159             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1160 
1161   case LibFunc_memccpy_chk:
1162       --NumParams;
1163     if (!FTy.getParamType(NumParams)->isIntegerTy(SizeTBits))
1164       return false;
1165     LLVM_FALLTHROUGH;
1166   case LibFunc_memccpy:
1167     return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
1168   case LibFunc_memalign:
1169     return (FTy.getReturnType()->isPointerTy());
1170   case LibFunc_realloc:
1171   case LibFunc_reallocf:
1172   case LibFunc_vec_realloc:
1173     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1174             FTy.getParamType(0) == FTy.getReturnType() &&
1175             FTy.getParamType(1)->isIntegerTy(SizeTBits));
1176   case LibFunc_read:
1177     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1178   case LibFunc_rewind:
1179   case LibFunc_rmdir:
1180   case LibFunc_remove:
1181   case LibFunc_realpath:
1182     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1183   case LibFunc_rename:
1184     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1185             FTy.getParamType(1)->isPointerTy());
1186   case LibFunc_readlink:
1187     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1188             FTy.getParamType(1)->isPointerTy());
1189   case LibFunc_write:
1190     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1191   case LibFunc_aligned_alloc:
1192     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1193   case LibFunc_bcopy:
1194   case LibFunc_bcmp:
1195     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1196             FTy.getParamType(1)->isPointerTy());
1197   case LibFunc_bzero:
1198     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1199   case LibFunc_calloc:
1200   case LibFunc_vec_calloc:
1201     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1202             FTy.getParamType(0) == FTy.getParamType(1));
1203 
1204   case LibFunc_atof:
1205   case LibFunc_atoi:
1206   case LibFunc_atol:
1207   case LibFunc_atoll:
1208   case LibFunc_ferror:
1209   case LibFunc_getenv:
1210   case LibFunc_getpwnam:
1211   case LibFunc_iprintf:
1212   case LibFunc_small_printf:
1213   case LibFunc_pclose:
1214   case LibFunc_perror:
1215   case LibFunc_printf:
1216   case LibFunc_puts:
1217   case LibFunc_uname:
1218   case LibFunc_under_IO_getc:
1219   case LibFunc_unlink:
1220   case LibFunc_unsetenv:
1221     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1222 
1223   case LibFunc_access:
1224   case LibFunc_chmod:
1225   case LibFunc_chown:
1226   case LibFunc_clearerr:
1227   case LibFunc_closedir:
1228   case LibFunc_ctermid:
1229   case LibFunc_fclose:
1230   case LibFunc_feof:
1231   case LibFunc_fflush:
1232   case LibFunc_fgetc:
1233   case LibFunc_fgetc_unlocked:
1234   case LibFunc_fileno:
1235   case LibFunc_flockfile:
1236   case LibFunc_free:
1237   case LibFunc_fseek:
1238   case LibFunc_fseeko64:
1239   case LibFunc_fseeko:
1240   case LibFunc_fsetpos:
1241   case LibFunc_ftell:
1242   case LibFunc_ftello64:
1243   case LibFunc_ftello:
1244   case LibFunc_ftrylockfile:
1245   case LibFunc_funlockfile:
1246   case LibFunc_getc:
1247   case LibFunc_getc_unlocked:
1248   case LibFunc_getlogin_r:
1249   case LibFunc_mkdir:
1250   case LibFunc_mktime:
1251   case LibFunc_times:
1252   case LibFunc_vec_free:
1253     return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
1254   case LibFunc___kmpc_free_shared:
1255     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1256             FTy.getParamType(1)->isIntegerTy(SizeTBits));
1257 
1258   case LibFunc_fopen:
1259     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1260             FTy.getParamType(0)->isPointerTy() &&
1261             FTy.getParamType(1)->isPointerTy());
1262   case LibFunc_fork:
1263     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
1264   case LibFunc_fdopen:
1265     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1266             FTy.getParamType(1)->isPointerTy());
1267   case LibFunc_fputc:
1268   case LibFunc_fputc_unlocked:
1269   case LibFunc_fstat:
1270   case LibFunc_frexp:
1271   case LibFunc_frexpf:
1272   case LibFunc_frexpl:
1273   case LibFunc_fstatvfs:
1274     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1275   case LibFunc_fgets:
1276   case LibFunc_fgets_unlocked:
1277     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1278             FTy.getParamType(2)->isPointerTy());
1279   case LibFunc_fread:
1280   case LibFunc_fread_unlocked:
1281     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1282             FTy.getParamType(3)->isPointerTy());
1283   case LibFunc_fwrite:
1284   case LibFunc_fwrite_unlocked:
1285     return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
1286             FTy.getParamType(0)->isPointerTy() &&
1287             FTy.getParamType(1)->isIntegerTy() &&
1288             FTy.getParamType(2)->isIntegerTy() &&
1289             FTy.getParamType(3)->isPointerTy());
1290   case LibFunc_fputs:
1291   case LibFunc_fputs_unlocked:
1292     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1293             FTy.getParamType(1)->isPointerTy());
1294   case LibFunc_fscanf:
1295   case LibFunc_fiprintf:
1296   case LibFunc_small_fprintf:
1297   case LibFunc_fprintf:
1298     return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
1299             FTy.getParamType(0)->isPointerTy() &&
1300             FTy.getParamType(1)->isPointerTy());
1301   case LibFunc_fgetpos:
1302     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1303             FTy.getParamType(1)->isPointerTy());
1304   case LibFunc_getchar:
1305   case LibFunc_getchar_unlocked:
1306     return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1307   case LibFunc_gets:
1308     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1309   case LibFunc_getitimer:
1310     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1311   case LibFunc_ungetc:
1312     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1313   case LibFunc_utime:
1314   case LibFunc_utimes:
1315     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1316             FTy.getParamType(1)->isPointerTy());
1317   case LibFunc_putc:
1318   case LibFunc_putc_unlocked:
1319     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1320   case LibFunc_pread:
1321   case LibFunc_pwrite:
1322     return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1323   case LibFunc_popen:
1324     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1325             FTy.getParamType(0)->isPointerTy() &&
1326             FTy.getParamType(1)->isPointerTy());
1327   case LibFunc_vscanf:
1328     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1329   case LibFunc_vsscanf:
1330     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1331             FTy.getParamType(2)->isPointerTy());
1332   case LibFunc_vfscanf:
1333     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1334             FTy.getParamType(2)->isPointerTy());
1335   case LibFunc_valloc:
1336     return (FTy.getReturnType()->isPointerTy());
1337   case LibFunc_vprintf:
1338     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1339   case LibFunc_vfprintf:
1340   case LibFunc_vsprintf:
1341     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1342             FTy.getParamType(1)->isPointerTy());
1343   case LibFunc_vsprintf_chk:
1344     return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1345            FTy.getParamType(1)->isIntegerTy(32) &&
1346            FTy.getParamType(2)->isIntegerTy(SizeTBits) && FTy.getParamType(3)->isPointerTy();
1347   case LibFunc_vsnprintf:
1348     return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1349             FTy.getParamType(2)->isPointerTy());
1350   case LibFunc_vsnprintf_chk:
1351     return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1352            FTy.getParamType(2)->isIntegerTy(32) &&
1353            FTy.getParamType(3)->isIntegerTy(SizeTBits) && FTy.getParamType(4)->isPointerTy();
1354   case LibFunc_open:
1355     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1356   case LibFunc_opendir:
1357     return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1358             FTy.getParamType(0)->isPointerTy());
1359   case LibFunc_tmpfile:
1360     return (FTy.getReturnType()->isPointerTy());
1361   case LibFunc_htonl:
1362   case LibFunc_ntohl:
1363     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1364             FTy.getReturnType() == FTy.getParamType(0));
1365   case LibFunc_htons:
1366   case LibFunc_ntohs:
1367     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1368             FTy.getReturnType() == FTy.getParamType(0));
1369   case LibFunc_lstat:
1370     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1371             FTy.getParamType(1)->isPointerTy());
1372   case LibFunc_lchown:
1373     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1374   case LibFunc_qsort:
1375     return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1376   case LibFunc_dunder_strdup:
1377   case LibFunc_dunder_strndup:
1378     return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1379             FTy.getParamType(0)->isPointerTy());
1380   case LibFunc_dunder_strtok_r:
1381     return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1382   case LibFunc_under_IO_putc:
1383     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1384   case LibFunc_dunder_isoc99_scanf:
1385     return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1386   case LibFunc_stat64:
1387   case LibFunc_lstat64:
1388   case LibFunc_statvfs64:
1389     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1390             FTy.getParamType(1)->isPointerTy());
1391   case LibFunc_dunder_isoc99_sscanf:
1392     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1393             FTy.getParamType(1)->isPointerTy());
1394   case LibFunc_fopen64:
1395     return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1396             FTy.getParamType(0)->isPointerTy() &&
1397             FTy.getParamType(1)->isPointerTy());
1398   case LibFunc_tmpfile64:
1399     return (FTy.getReturnType()->isPointerTy());
1400   case LibFunc_fstat64:
1401   case LibFunc_fstatvfs64:
1402     return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1403   case LibFunc_open64:
1404     return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1405   case LibFunc_gettimeofday:
1406     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1407             FTy.getParamType(1)->isPointerTy());
1408 
1409   // new(unsigned int);
1410   case LibFunc_Znwj:
1411   // new(unsigned long);
1412   case LibFunc_Znwm:
1413   // new[](unsigned int);
1414   case LibFunc_Znaj:
1415   // new[](unsigned long);
1416   case LibFunc_Znam:
1417   // new(unsigned int);
1418   case LibFunc_msvc_new_int:
1419   // new(unsigned long long);
1420   case LibFunc_msvc_new_longlong:
1421   // new[](unsigned int);
1422   case LibFunc_msvc_new_array_int:
1423   // new[](unsigned long long);
1424   case LibFunc_msvc_new_array_longlong:
1425     return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1426 
1427   // new(unsigned int, nothrow);
1428   case LibFunc_ZnwjRKSt9nothrow_t:
1429   // new(unsigned long, nothrow);
1430   case LibFunc_ZnwmRKSt9nothrow_t:
1431   // new[](unsigned int, nothrow);
1432   case LibFunc_ZnajRKSt9nothrow_t:
1433   // new[](unsigned long, nothrow);
1434   case LibFunc_ZnamRKSt9nothrow_t:
1435   // new(unsigned int, nothrow);
1436   case LibFunc_msvc_new_int_nothrow:
1437   // new(unsigned long long, nothrow);
1438   case LibFunc_msvc_new_longlong_nothrow:
1439   // new[](unsigned int, nothrow);
1440   case LibFunc_msvc_new_array_int_nothrow:
1441   // new[](unsigned long long, nothrow);
1442   case LibFunc_msvc_new_array_longlong_nothrow:
1443   // new(unsigned int, align_val_t)
1444   case LibFunc_ZnwjSt11align_val_t:
1445   // new(unsigned long, align_val_t)
1446   case LibFunc_ZnwmSt11align_val_t:
1447   // new[](unsigned int, align_val_t)
1448   case LibFunc_ZnajSt11align_val_t:
1449   // new[](unsigned long, align_val_t)
1450   case LibFunc_ZnamSt11align_val_t:
1451     return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1452 
1453   // new(unsigned int, align_val_t, nothrow)
1454   case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1455   // new(unsigned long, align_val_t, nothrow)
1456   case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1457   // new[](unsigned int, align_val_t, nothrow)
1458   case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1459   // new[](unsigned long, align_val_t, nothrow)
1460   case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1461     return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1462 
1463   // void operator delete[](void*);
1464   case LibFunc_ZdaPv:
1465   // void operator delete(void*);
1466   case LibFunc_ZdlPv:
1467   // void operator delete[](void*);
1468   case LibFunc_msvc_delete_array_ptr32:
1469   // void operator delete[](void*);
1470   case LibFunc_msvc_delete_array_ptr64:
1471   // void operator delete(void*);
1472   case LibFunc_msvc_delete_ptr32:
1473   // void operator delete(void*);
1474   case LibFunc_msvc_delete_ptr64:
1475     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1476 
1477   // void operator delete[](void*, nothrow);
1478   case LibFunc_ZdaPvRKSt9nothrow_t:
1479   // void operator delete[](void*, unsigned int);
1480   case LibFunc_ZdaPvj:
1481   // void operator delete[](void*, unsigned long);
1482   case LibFunc_ZdaPvm:
1483   // void operator delete(void*, nothrow);
1484   case LibFunc_ZdlPvRKSt9nothrow_t:
1485   // void operator delete(void*, unsigned int);
1486   case LibFunc_ZdlPvj:
1487   // void operator delete(void*, unsigned long);
1488   case LibFunc_ZdlPvm:
1489   // void operator delete(void*, align_val_t)
1490   case LibFunc_ZdlPvSt11align_val_t:
1491   // void operator delete[](void*, align_val_t)
1492   case LibFunc_ZdaPvSt11align_val_t:
1493   // void operator delete[](void*, unsigned int);
1494   case LibFunc_msvc_delete_array_ptr32_int:
1495   // void operator delete[](void*, nothrow);
1496   case LibFunc_msvc_delete_array_ptr32_nothrow:
1497   // void operator delete[](void*, unsigned long long);
1498   case LibFunc_msvc_delete_array_ptr64_longlong:
1499   // void operator delete[](void*, nothrow);
1500   case LibFunc_msvc_delete_array_ptr64_nothrow:
1501   // void operator delete(void*, unsigned int);
1502   case LibFunc_msvc_delete_ptr32_int:
1503   // void operator delete(void*, nothrow);
1504   case LibFunc_msvc_delete_ptr32_nothrow:
1505   // void operator delete(void*, unsigned long long);
1506   case LibFunc_msvc_delete_ptr64_longlong:
1507   // void operator delete(void*, nothrow);
1508   case LibFunc_msvc_delete_ptr64_nothrow:
1509     return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1510 
1511   // void operator delete(void*, align_val_t, nothrow)
1512   case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1513   // void operator delete[](void*, align_val_t, nothrow)
1514   case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1515   // void operator delete(void*, unsigned int, align_val_t)
1516   case LibFunc_ZdlPvjSt11align_val_t:
1517   // void operator delete(void*, unsigned long, align_val_t)
1518   case LibFunc_ZdlPvmSt11align_val_t:
1519   // void operator delete[](void*, unsigned int, align_val_t);
1520   case LibFunc_ZdaPvjSt11align_val_t:
1521   // void operator delete[](void*, unsigned long, align_val_t);
1522   case LibFunc_ZdaPvmSt11align_val_t:
1523     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1524 
1525   // void __atomic_load(size_t, void *, void *, int)
1526   case LibFunc_atomic_load:
1527   // void __atomic_store(size_t, void *, void *, int)
1528   case LibFunc_atomic_store:
1529     return (NumParams == 4 && FTy.getParamType(0)->isIntegerTy() &&
1530             FTy.getParamType(1)->isPointerTy() &&
1531             FTy.getParamType(2)->isPointerTy() &&
1532             FTy.getParamType(3)->isIntegerTy());
1533 
1534   case LibFunc_memset_pattern4:
1535   case LibFunc_memset_pattern8:
1536   case LibFunc_memset_pattern16:
1537     return (!FTy.isVarArg() && NumParams == 3 &&
1538             FTy.getParamType(0)->isPointerTy() &&
1539             FTy.getParamType(1)->isPointerTy() &&
1540             FTy.getParamType(2)->isIntegerTy());
1541 
1542   case LibFunc_cxa_guard_abort:
1543   case LibFunc_cxa_guard_acquire:
1544   case LibFunc_cxa_guard_release:
1545   case LibFunc_nvvm_reflect:
1546     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1547 
1548   case LibFunc_sincospi_stret:
1549   case LibFunc_sincospif_stret:
1550     return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1551 
1552   case LibFunc_acos:
1553   case LibFunc_acos_finite:
1554   case LibFunc_acosf:
1555   case LibFunc_acosf_finite:
1556   case LibFunc_acosh:
1557   case LibFunc_acosh_finite:
1558   case LibFunc_acoshf:
1559   case LibFunc_acoshf_finite:
1560   case LibFunc_acoshl:
1561   case LibFunc_acoshl_finite:
1562   case LibFunc_acosl:
1563   case LibFunc_acosl_finite:
1564   case LibFunc_asin:
1565   case LibFunc_asin_finite:
1566   case LibFunc_asinf:
1567   case LibFunc_asinf_finite:
1568   case LibFunc_asinh:
1569   case LibFunc_asinhf:
1570   case LibFunc_asinhl:
1571   case LibFunc_asinl:
1572   case LibFunc_asinl_finite:
1573   case LibFunc_atan:
1574   case LibFunc_atanf:
1575   case LibFunc_atanh:
1576   case LibFunc_atanh_finite:
1577   case LibFunc_atanhf:
1578   case LibFunc_atanhf_finite:
1579   case LibFunc_atanhl:
1580   case LibFunc_atanhl_finite:
1581   case LibFunc_atanl:
1582   case LibFunc_cbrt:
1583   case LibFunc_cbrtf:
1584   case LibFunc_cbrtl:
1585   case LibFunc_ceil:
1586   case LibFunc_ceilf:
1587   case LibFunc_ceill:
1588   case LibFunc_cos:
1589   case LibFunc_cosf:
1590   case LibFunc_cosh:
1591   case LibFunc_cosh_finite:
1592   case LibFunc_coshf:
1593   case LibFunc_coshf_finite:
1594   case LibFunc_coshl:
1595   case LibFunc_coshl_finite:
1596   case LibFunc_cosl:
1597   case LibFunc_exp10:
1598   case LibFunc_exp10_finite:
1599   case LibFunc_exp10f:
1600   case LibFunc_exp10f_finite:
1601   case LibFunc_exp10l:
1602   case LibFunc_exp10l_finite:
1603   case LibFunc_exp2:
1604   case LibFunc_exp2_finite:
1605   case LibFunc_exp2f:
1606   case LibFunc_exp2f_finite:
1607   case LibFunc_exp2l:
1608   case LibFunc_exp2l_finite:
1609   case LibFunc_exp:
1610   case LibFunc_exp_finite:
1611   case LibFunc_expf:
1612   case LibFunc_expf_finite:
1613   case LibFunc_expl:
1614   case LibFunc_expl_finite:
1615   case LibFunc_expm1:
1616   case LibFunc_expm1f:
1617   case LibFunc_expm1l:
1618   case LibFunc_fabs:
1619   case LibFunc_fabsf:
1620   case LibFunc_fabsl:
1621   case LibFunc_floor:
1622   case LibFunc_floorf:
1623   case LibFunc_floorl:
1624   case LibFunc_log10:
1625   case LibFunc_log10_finite:
1626   case LibFunc_log10f:
1627   case LibFunc_log10f_finite:
1628   case LibFunc_log10l:
1629   case LibFunc_log10l_finite:
1630   case LibFunc_log1p:
1631   case LibFunc_log1pf:
1632   case LibFunc_log1pl:
1633   case LibFunc_log2:
1634   case LibFunc_log2_finite:
1635   case LibFunc_log2f:
1636   case LibFunc_log2f_finite:
1637   case LibFunc_log2l:
1638   case LibFunc_log2l_finite:
1639   case LibFunc_log:
1640   case LibFunc_log_finite:
1641   case LibFunc_logb:
1642   case LibFunc_logbf:
1643   case LibFunc_logbl:
1644   case LibFunc_logf:
1645   case LibFunc_logf_finite:
1646   case LibFunc_logl:
1647   case LibFunc_logl_finite:
1648   case LibFunc_nearbyint:
1649   case LibFunc_nearbyintf:
1650   case LibFunc_nearbyintl:
1651   case LibFunc_rint:
1652   case LibFunc_rintf:
1653   case LibFunc_rintl:
1654   case LibFunc_round:
1655   case LibFunc_roundf:
1656   case LibFunc_roundl:
1657   case LibFunc_roundeven:
1658   case LibFunc_roundevenf:
1659   case LibFunc_roundevenl:
1660   case LibFunc_sin:
1661   case LibFunc_sinf:
1662   case LibFunc_sinh:
1663   case LibFunc_sinh_finite:
1664   case LibFunc_sinhf:
1665   case LibFunc_sinhf_finite:
1666   case LibFunc_sinhl:
1667   case LibFunc_sinhl_finite:
1668   case LibFunc_sinl:
1669   case LibFunc_sqrt:
1670   case LibFunc_sqrt_finite:
1671   case LibFunc_sqrtf:
1672   case LibFunc_sqrtf_finite:
1673   case LibFunc_sqrtl:
1674   case LibFunc_sqrtl_finite:
1675   case LibFunc_tan:
1676   case LibFunc_tanf:
1677   case LibFunc_tanh:
1678   case LibFunc_tanhf:
1679   case LibFunc_tanhl:
1680   case LibFunc_tanl:
1681   case LibFunc_trunc:
1682   case LibFunc_truncf:
1683   case LibFunc_truncl:
1684     return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1685             FTy.getReturnType() == FTy.getParamType(0));
1686 
1687   case LibFunc_atan2:
1688   case LibFunc_atan2_finite:
1689   case LibFunc_atan2f:
1690   case LibFunc_atan2f_finite:
1691   case LibFunc_atan2l:
1692   case LibFunc_atan2l_finite:
1693   case LibFunc_fmin:
1694   case LibFunc_fminf:
1695   case LibFunc_fminl:
1696   case LibFunc_fmax:
1697   case LibFunc_fmaxf:
1698   case LibFunc_fmaxl:
1699   case LibFunc_fmod:
1700   case LibFunc_fmodf:
1701   case LibFunc_fmodl:
1702   case LibFunc_remainder:
1703   case LibFunc_remainderf:
1704   case LibFunc_remainderl:
1705   case LibFunc_copysign:
1706   case LibFunc_copysignf:
1707   case LibFunc_copysignl:
1708   case LibFunc_pow:
1709   case LibFunc_pow_finite:
1710   case LibFunc_powf:
1711   case LibFunc_powf_finite:
1712   case LibFunc_powl:
1713   case LibFunc_powl_finite:
1714     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1715             FTy.getReturnType() == FTy.getParamType(0) &&
1716             FTy.getReturnType() == FTy.getParamType(1));
1717 
1718   case LibFunc_ldexp:
1719   case LibFunc_ldexpf:
1720   case LibFunc_ldexpl:
1721     return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1722             FTy.getReturnType() == FTy.getParamType(0) &&
1723             FTy.getParamType(1)->isIntegerTy(getIntSize()));
1724 
1725   case LibFunc_ffs:
1726   case LibFunc_ffsl:
1727   case LibFunc_ffsll:
1728   case LibFunc_fls:
1729   case LibFunc_flsl:
1730   case LibFunc_flsll:
1731     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1732             FTy.getParamType(0)->isIntegerTy());
1733 
1734   case LibFunc_isdigit:
1735   case LibFunc_isascii:
1736   case LibFunc_toascii:
1737   case LibFunc_putchar:
1738   case LibFunc_putchar_unlocked:
1739     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1740             FTy.getReturnType() == FTy.getParamType(0));
1741 
1742   case LibFunc_abs:
1743   case LibFunc_labs:
1744   case LibFunc_llabs:
1745     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1746             FTy.getReturnType() == FTy.getParamType(0));
1747 
1748   case LibFunc_cxa_atexit:
1749     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1750             FTy.getParamType(0)->isPointerTy() &&
1751             FTy.getParamType(1)->isPointerTy() &&
1752             FTy.getParamType(2)->isPointerTy());
1753 
1754   case LibFunc_sinpi:
1755   case LibFunc_cospi:
1756     return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1757             FTy.getReturnType() == FTy.getParamType(0));
1758 
1759   case LibFunc_sinpif:
1760   case LibFunc_cospif:
1761     return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1762             FTy.getReturnType() == FTy.getParamType(0));
1763 
1764   case LibFunc_strnlen:
1765     return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1766             FTy.getParamType(0)->isPointerTy() &&
1767             FTy.getParamType(1)->isIntegerTy(SizeTBits));
1768 
1769   case LibFunc_posix_memalign:
1770     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1771             FTy.getParamType(0)->isPointerTy() &&
1772             FTy.getParamType(1)->isIntegerTy(SizeTBits) &&
1773             FTy.getParamType(2)->isIntegerTy(SizeTBits));
1774 
1775   case LibFunc_wcslen:
1776     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1777             FTy.getReturnType()->isIntegerTy());
1778 
1779   case LibFunc_cabs:
1780   case LibFunc_cabsf:
1781   case LibFunc_cabsl: {
1782     Type* RetTy = FTy.getReturnType();
1783     if (!RetTy->isFloatingPointTy())
1784       return false;
1785 
1786     // NOTE: These prototypes are target specific and currently support
1787     // "complex" passed as an array or discrete real & imaginary parameters.
1788     // Add other calling conventions to enable libcall optimizations.
1789     if (NumParams == 1)
1790       return (FTy.getParamType(0)->isArrayTy() &&
1791               FTy.getParamType(0)->getArrayNumElements() == 2 &&
1792               FTy.getParamType(0)->getArrayElementType() == RetTy);
1793     else if (NumParams == 2)
1794       return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1795     else
1796       return false;
1797   }
1798   case LibFunc::NumLibFuncs:
1799   case LibFunc::NotLibFunc:
1800     break;
1801   }
1802 
1803   llvm_unreachable("Invalid libfunc");
1804 }
1805 
getLibFunc(const Function & FDecl,LibFunc & F) const1806 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1807                                        LibFunc &F) const {
1808   // Intrinsics don't overlap w/libcalls; if our module has a large number of
1809   // intrinsics, this ends up being an interesting compile time win since we
1810   // avoid string normalization and comparison.
1811   if (FDecl.isIntrinsic()) return false;
1812 
1813   const Module *M = FDecl.getParent();
1814   assert(M && "Expecting FDecl to be connected to a Module.");
1815 
1816   return getLibFunc(FDecl.getName(), F) &&
1817          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, *M);
1818 }
1819 
disableAllFunctions()1820 void TargetLibraryInfoImpl::disableAllFunctions() {
1821   memset(AvailableArray, 0, sizeof(AvailableArray));
1822 }
1823 
compareByScalarFnName(const VecDesc & LHS,const VecDesc & RHS)1824 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1825   return LHS.ScalarFnName < RHS.ScalarFnName;
1826 }
1827 
compareByVectorFnName(const VecDesc & LHS,const VecDesc & RHS)1828 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1829   return LHS.VectorFnName < RHS.VectorFnName;
1830 }
1831 
compareWithScalarFnName(const VecDesc & LHS,StringRef S)1832 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1833   return LHS.ScalarFnName < S;
1834 }
1835 
addVectorizableFunctions(ArrayRef<VecDesc> Fns)1836 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1837   llvm::append_range(VectorDescs, Fns);
1838   llvm::sort(VectorDescs, compareByScalarFnName);
1839 
1840   llvm::append_range(ScalarDescs, Fns);
1841   llvm::sort(ScalarDescs, compareByVectorFnName);
1842 }
1843 
addVectorizableFunctionsFromVecLib(enum VectorLibrary VecLib)1844 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1845     enum VectorLibrary VecLib) {
1846   switch (VecLib) {
1847   case Accelerate: {
1848     const VecDesc VecFuncs[] = {
1849     #define TLI_DEFINE_ACCELERATE_VECFUNCS
1850     #include "llvm/Analysis/VecFuncs.def"
1851     };
1852     addVectorizableFunctions(VecFuncs);
1853     break;
1854   }
1855   case DarwinLibSystemM: {
1856     const VecDesc VecFuncs[] = {
1857     #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS
1858     #include "llvm/Analysis/VecFuncs.def"
1859     };
1860     addVectorizableFunctions(VecFuncs);
1861     break;
1862   }
1863   case LIBMVEC_X86: {
1864     const VecDesc VecFuncs[] = {
1865     #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS
1866     #include "llvm/Analysis/VecFuncs.def"
1867     };
1868     addVectorizableFunctions(VecFuncs);
1869     break;
1870   }
1871   case MASSV: {
1872     const VecDesc VecFuncs[] = {
1873     #define TLI_DEFINE_MASSV_VECFUNCS
1874     #include "llvm/Analysis/VecFuncs.def"
1875     };
1876     addVectorizableFunctions(VecFuncs);
1877     break;
1878   }
1879   case SVML: {
1880     const VecDesc VecFuncs[] = {
1881     #define TLI_DEFINE_SVML_VECFUNCS
1882     #include "llvm/Analysis/VecFuncs.def"
1883     };
1884     addVectorizableFunctions(VecFuncs);
1885     break;
1886   }
1887   case NoLibrary:
1888     break;
1889   }
1890 }
1891 
isFunctionVectorizable(StringRef funcName) const1892 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1893   funcName = sanitizeFunctionName(funcName);
1894   if (funcName.empty())
1895     return false;
1896 
1897   std::vector<VecDesc>::const_iterator I =
1898       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1899   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1900 }
1901 
1902 StringRef
getVectorizedFunction(StringRef F,const ElementCount & VF) const1903 TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1904                                              const ElementCount &VF) const {
1905   F = sanitizeFunctionName(F);
1906   if (F.empty())
1907     return F;
1908   std::vector<VecDesc>::const_iterator I =
1909       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1910   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1911     if (I->VectorizationFactor == VF)
1912       return I->VectorFnName;
1913     ++I;
1914   }
1915   return StringRef();
1916 }
1917 
run(const Function & F,FunctionAnalysisManager &)1918 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
1919                                              FunctionAnalysisManager &) {
1920   if (!BaselineInfoImpl)
1921     BaselineInfoImpl =
1922         TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1923   return TargetLibraryInfo(*BaselineInfoImpl, &F);
1924 }
1925 
getWCharSize(const Module & M) const1926 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1927   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1928       M.getModuleFlag("wchar_size")))
1929     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1930   return 0;
1931 }
1932 
TargetLibraryInfoWrapperPass()1933 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1934     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1935   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1936 }
1937 
TargetLibraryInfoWrapperPass(const Triple & T)1938 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1939     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1940   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1941 }
1942 
TargetLibraryInfoWrapperPass(const TargetLibraryInfoImpl & TLIImpl)1943 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1944     const TargetLibraryInfoImpl &TLIImpl)
1945     : ImmutablePass(ID), TLA(TLIImpl) {
1946   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1947 }
1948 
1949 AnalysisKey TargetLibraryAnalysis::Key;
1950 
1951 // Register the basic pass.
1952 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1953                 "Target Library Information", false, true)
1954 char TargetLibraryInfoWrapperPass::ID = 0;
1955 
anchor()1956 void TargetLibraryInfoWrapperPass::anchor() {}
1957 
getWidestVF(StringRef ScalarF,ElementCount & FixedVF,ElementCount & ScalableVF) const1958 void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF,
1959                                         ElementCount &FixedVF,
1960                                         ElementCount &ScalableVF) const {
1961   ScalarF = sanitizeFunctionName(ScalarF);
1962   // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the
1963   // same as a scalar.
1964   ScalableVF = ElementCount::getScalable(0);
1965   FixedVF = ElementCount::getFixed(1);
1966   if (ScalarF.empty())
1967     return;
1968 
1969   std::vector<VecDesc>::const_iterator I =
1970       llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1971   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1972     ElementCount *VF =
1973         I->VectorizationFactor.isScalable() ? &ScalableVF : &FixedVF;
1974     if (ElementCount::isKnownGT(I->VectorizationFactor, *VF))
1975       *VF = I->VectorizationFactor;
1976     ++I;
1977   }
1978 }
1979