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/DenseMap.h"
15#include "llvm/ADT/SmallString.h"
16#include "llvm/IR/Constants.h"
17#include "llvm/InitializePasses.h"
18#include "llvm/Support/CommandLine.h"
19#include "llvm/TargetParser/Triple.h"
20using namespace llvm;
21
22static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
23 "vector-library", cl::Hidden, cl::desc("Vector functions library"),
24 cl::init(Val: TargetLibraryInfoImpl::NoLibrary),
25 cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
26 "No vector functions library"),
27 clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
28 "Accelerate framework"),
29 clEnumValN(TargetLibraryInfoImpl::DarwinLibSystemM,
30 "Darwin_libsystem_m", "Darwin libsystem_m"),
31 clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86",
32 "GLIBC Vector Math library"),
33 clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
34 "IBM MASS vector library"),
35 clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
36 "Intel SVML library"),
37 clEnumValN(TargetLibraryInfoImpl::SLEEFGNUABI, "sleefgnuabi",
38 "SIMD Library for Evaluating Elementary Functions"),
39 clEnumValN(TargetLibraryInfoImpl::ArmPL, "ArmPL",
40 "Arm Performance Libraries")));
41
42StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
43 {
44#define TLI_DEFINE_STRING
45#include "llvm/Analysis/TargetLibraryInfo.def"
46};
47
48std::string VecDesc::getVectorFunctionABIVariantString() const {
49 assert(!VectorFnName.empty() && "Vector function name must not be empty.");
50 SmallString<256> Buffer;
51 llvm::raw_svector_ostream Out(Buffer);
52 Out << VABIPrefix << "_" << ScalarFnName << "(" << VectorFnName << ")";
53 return std::string(Out.str());
54}
55
56// Recognized types of library function arguments and return types.
57enum FuncArgTypeID : char {
58 Void = 0, // Must be zero.
59 Bool, // 8 bits on all targets
60 Int16,
61 Int32,
62 Int,
63 IntPlus, // Int or bigger.
64 Long, // Either 32 or 64 bits.
65 IntX, // Any integer type.
66 Int64,
67 LLong, // 64 bits on all targets.
68 SizeT, // size_t.
69 SSizeT, // POSIX ssize_t.
70 Flt, // IEEE float.
71 Dbl, // IEEE double.
72 LDbl, // Any floating type (TODO: tighten this up).
73 Floating, // Any floating type.
74 Ptr, // Any pointer type.
75 Struct, // Any struct type.
76 Ellip, // The ellipsis (...).
77 Same, // Same argument type as the previous one.
78};
79
80typedef std::array<FuncArgTypeID, 8> FuncProtoTy;
81
82static const FuncProtoTy Signatures[] = {
83#define TLI_DEFINE_SIG
84#include "llvm/Analysis/TargetLibraryInfo.def"
85};
86
87static_assert(sizeof Signatures / sizeof *Signatures == LibFunc::NumLibFuncs,
88 "Missing library function signatures");
89
90static bool hasSinCosPiStret(const Triple &T) {
91 // Only Darwin variants have _stret versions of combined trig functions.
92 if (!T.isOSDarwin())
93 return false;
94
95 // The ABI is rather complicated on x86, so don't do anything special there.
96 if (T.getArch() == Triple::x86)
97 return false;
98
99 if (T.isMacOSX() && T.isMacOSXVersionLT(Major: 10, Minor: 9))
100 return false;
101
102 if (T.isiOS() && T.isOSVersionLT(Major: 7, Minor: 0))
103 return false;
104
105 return true;
106}
107
108static bool hasBcmp(const Triple &TT) {
109 // Posix removed support from bcmp() in 2001, but the glibc and several
110 // implementations of the libc still have it.
111 if (TT.isOSLinux())
112 return TT.isGNUEnvironment() || TT.isMusl();
113 // Both NetBSD and OpenBSD are planning to remove the function. Windows does
114 // not have it.
115 return TT.isOSFreeBSD() || TT.isOSSolaris();
116}
117
118static bool isCallingConvCCompatible(CallingConv::ID CC, StringRef TT,
119 FunctionType *FuncTy) {
120 switch (CC) {
121 default:
122 return false;
123 case llvm::CallingConv::C:
124 return true;
125 case llvm::CallingConv::ARM_APCS:
126 case llvm::CallingConv::ARM_AAPCS:
127 case llvm::CallingConv::ARM_AAPCS_VFP: {
128
129 // The iOS ABI diverges from the standard in some cases, so for now don't
130 // try to simplify those calls.
131 if (Triple(TT).isiOS())
132 return false;
133
134 if (!FuncTy->getReturnType()->isPointerTy() &&
135 !FuncTy->getReturnType()->isIntegerTy() &&
136 !FuncTy->getReturnType()->isVoidTy())
137 return false;
138
139 for (auto *Param : FuncTy->params()) {
140 if (!Param->isPointerTy() && !Param->isIntegerTy())
141 return false;
142 }
143 return true;
144 }
145 }
146 return false;
147}
148
149bool TargetLibraryInfoImpl::isCallingConvCCompatible(CallBase *CI) {
150 return ::isCallingConvCCompatible(CC: CI->getCallingConv(),
151 TT: CI->getModule()->getTargetTriple(),
152 FuncTy: CI->getFunctionType());
153}
154
155bool TargetLibraryInfoImpl::isCallingConvCCompatible(Function *F) {
156 return ::isCallingConvCCompatible(CC: F->getCallingConv(),
157 TT: F->getParent()->getTargetTriple(),
158 FuncTy: F->getFunctionType());
159}
160
161/// Initialize the set of available library functions based on the specified
162/// target triple. This should be carefully written so that a missing target
163/// triple gets a sane set of defaults.
164static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
165 ArrayRef<StringLiteral> StandardNames) {
166 // Set IO unlocked variants as unavailable
167 // Set them as available per system below
168 TLI.setUnavailable(LibFunc_getc_unlocked);
169 TLI.setUnavailable(LibFunc_getchar_unlocked);
170 TLI.setUnavailable(LibFunc_putc_unlocked);
171 TLI.setUnavailable(LibFunc_putchar_unlocked);
172 TLI.setUnavailable(LibFunc_fputc_unlocked);
173 TLI.setUnavailable(LibFunc_fgetc_unlocked);
174 TLI.setUnavailable(LibFunc_fread_unlocked);
175 TLI.setUnavailable(LibFunc_fwrite_unlocked);
176 TLI.setUnavailable(LibFunc_fputs_unlocked);
177 TLI.setUnavailable(LibFunc_fgets_unlocked);
178
179 bool ShouldExtI32Param, ShouldExtI32Return;
180 bool ShouldSignExtI32Param, ShouldSignExtI32Return;
181 TargetLibraryInfo::initExtensionsForTriple(ShouldExtI32Param,
182 ShouldExtI32Return, ShouldSignExtI32Param, ShouldSignExtI32Return, T);
183 TLI.setShouldExtI32Param(ShouldExtI32Param);
184 TLI.setShouldExtI32Return(ShouldExtI32Return);
185 TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
186 TLI.setShouldSignExtI32Return(ShouldSignExtI32Return);
187
188 // Let's assume by default that the size of int is 32 bits, unless the target
189 // is a 16-bit architecture because then it most likely is 16 bits. If that
190 // isn't true for a target those defaults should be overridden below.
191 TLI.setIntSize(T.isArch16Bit() ? 16 : 32);
192
193 // There is really no runtime library on AMDGPU, apart from
194 // __kmpc_alloc/free_shared.
195 if (T.isAMDGPU()) {
196 TLI.disableAllFunctions();
197 TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
198 TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
199 return;
200 }
201
202 // memset_pattern{4,8,16} is only available on iOS 3.0 and Mac OS X 10.5 and
203 // later. All versions of watchOS support it.
204 if (T.isMacOSX()) {
205 // available IO unlocked variants on Mac OS X
206 TLI.setAvailable(LibFunc_getc_unlocked);
207 TLI.setAvailable(LibFunc_getchar_unlocked);
208 TLI.setAvailable(LibFunc_putc_unlocked);
209 TLI.setAvailable(LibFunc_putchar_unlocked);
210 TLI.setUnavailable(LibFunc_memrchr);
211
212 if (T.isMacOSXVersionLT(Major: 10, Minor: 5)) {
213 TLI.setUnavailable(LibFunc_memset_pattern4);
214 TLI.setUnavailable(LibFunc_memset_pattern8);
215 TLI.setUnavailable(LibFunc_memset_pattern16);
216 }
217 } else if (T.isiOS()) {
218 if (T.isOSVersionLT(Major: 3, Minor: 0)) {
219 TLI.setUnavailable(LibFunc_memset_pattern4);
220 TLI.setUnavailable(LibFunc_memset_pattern8);
221 TLI.setUnavailable(LibFunc_memset_pattern16);
222 }
223 } else if (!T.isWatchOS()) {
224 TLI.setUnavailable(LibFunc_memset_pattern4);
225 TLI.setUnavailable(LibFunc_memset_pattern8);
226 TLI.setUnavailable(LibFunc_memset_pattern16);
227 }
228
229 if (!hasSinCosPiStret(T)) {
230 TLI.setUnavailable(LibFunc_sinpi);
231 TLI.setUnavailable(LibFunc_sinpif);
232 TLI.setUnavailable(LibFunc_cospi);
233 TLI.setUnavailable(LibFunc_cospif);
234 TLI.setUnavailable(LibFunc_sincospi_stret);
235 TLI.setUnavailable(LibFunc_sincospif_stret);
236 }
237
238 if (!hasBcmp(TT: T))
239 TLI.setUnavailable(LibFunc_bcmp);
240
241 if (T.isMacOSX() && T.getArch() == Triple::x86 &&
242 !T.isMacOSXVersionLT(Major: 10, Minor: 7)) {
243 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
244 // we don't care about) have two versions; on recent OSX, the one we want
245 // has a $UNIX2003 suffix. The two implementations are identical except
246 // for the return value in some edge cases. However, we don't want to
247 // generate code that depends on the old symbols.
248 TLI.setAvailableWithName(F: LibFunc_fwrite, Name: "fwrite$UNIX2003");
249 TLI.setAvailableWithName(F: LibFunc_fputs, Name: "fputs$UNIX2003");
250 }
251
252 // iprintf and friends are only available on XCore, TCE, and Emscripten.
253 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
254 T.getOS() != Triple::Emscripten) {
255 TLI.setUnavailable(LibFunc_iprintf);
256 TLI.setUnavailable(LibFunc_siprintf);
257 TLI.setUnavailable(LibFunc_fiprintf);
258 }
259
260 // __small_printf and friends are only available on Emscripten.
261 if (T.getOS() != Triple::Emscripten) {
262 TLI.setUnavailable(LibFunc_small_printf);
263 TLI.setUnavailable(LibFunc_small_sprintf);
264 TLI.setUnavailable(LibFunc_small_fprintf);
265 }
266
267 if (T.isOSWindows() && !T.isOSCygMing()) {
268 // XXX: The earliest documentation available at the moment is for VS2015/VC19:
269 // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
270 // XXX: In order to use an MSVCRT older than VC19,
271 // the specific library version must be explicit in the target triple,
272 // e.g., x86_64-pc-windows-msvc18.
273 bool hasPartialC99 = true;
274 if (T.isKnownWindowsMSVCEnvironment()) {
275 VersionTuple Version = T.getEnvironmentVersion();
276 hasPartialC99 = (Version.getMajor() == 0 || Version.getMajor() >= 19);
277 }
278
279 // Latest targets support C89 math functions, in part.
280 bool isARM = (T.getArch() == Triple::aarch64 ||
281 T.getArch() == Triple::arm);
282 bool hasPartialFloat = (isARM ||
283 T.getArch() == Triple::x86_64);
284
285 // Win32 does not support float C89 math functions, in general.
286 if (!hasPartialFloat) {
287 TLI.setUnavailable(LibFunc_acosf);
288 TLI.setUnavailable(LibFunc_asinf);
289 TLI.setUnavailable(LibFunc_atan2f);
290 TLI.setUnavailable(LibFunc_atanf);
291 TLI.setUnavailable(LibFunc_ceilf);
292 TLI.setUnavailable(LibFunc_cosf);
293 TLI.setUnavailable(LibFunc_coshf);
294 TLI.setUnavailable(LibFunc_expf);
295 TLI.setUnavailable(LibFunc_floorf);
296 TLI.setUnavailable(LibFunc_fmodf);
297 TLI.setUnavailable(LibFunc_log10f);
298 TLI.setUnavailable(LibFunc_logf);
299 TLI.setUnavailable(LibFunc_modff);
300 TLI.setUnavailable(LibFunc_powf);
301 TLI.setUnavailable(LibFunc_remainderf);
302 TLI.setUnavailable(LibFunc_sinf);
303 TLI.setUnavailable(LibFunc_sinhf);
304 TLI.setUnavailable(LibFunc_sqrtf);
305 TLI.setUnavailable(LibFunc_tanf);
306 TLI.setUnavailable(LibFunc_tanhf);
307 }
308 if (!isARM)
309 TLI.setUnavailable(LibFunc_fabsf);
310 TLI.setUnavailable(LibFunc_frexpf);
311 TLI.setUnavailable(LibFunc_ldexpf);
312
313 // Win32 does not support long double C89 math functions.
314 TLI.setUnavailable(LibFunc_acosl);
315 TLI.setUnavailable(LibFunc_asinl);
316 TLI.setUnavailable(LibFunc_atan2l);
317 TLI.setUnavailable(LibFunc_atanl);
318 TLI.setUnavailable(LibFunc_ceill);
319 TLI.setUnavailable(LibFunc_cosl);
320 TLI.setUnavailable(LibFunc_coshl);
321 TLI.setUnavailable(LibFunc_expl);
322 TLI.setUnavailable(LibFunc_fabsl);
323 TLI.setUnavailable(LibFunc_floorl);
324 TLI.setUnavailable(LibFunc_fmodl);
325 TLI.setUnavailable(LibFunc_frexpl);
326 TLI.setUnavailable(LibFunc_ldexpl);
327 TLI.setUnavailable(LibFunc_log10l);
328 TLI.setUnavailable(LibFunc_logl);
329 TLI.setUnavailable(LibFunc_modfl);
330 TLI.setUnavailable(LibFunc_powl);
331 TLI.setUnavailable(LibFunc_remainderl);
332 TLI.setUnavailable(LibFunc_sinl);
333 TLI.setUnavailable(LibFunc_sinhl);
334 TLI.setUnavailable(LibFunc_sqrtl);
335 TLI.setUnavailable(LibFunc_tanl);
336 TLI.setUnavailable(LibFunc_tanhl);
337
338 // Win32 does not fully support C99 math functions.
339 if (!hasPartialC99) {
340 TLI.setUnavailable(LibFunc_acosh);
341 TLI.setUnavailable(LibFunc_acoshf);
342 TLI.setUnavailable(LibFunc_asinh);
343 TLI.setUnavailable(LibFunc_asinhf);
344 TLI.setUnavailable(LibFunc_atanh);
345 TLI.setUnavailable(LibFunc_atanhf);
346 TLI.setAvailableWithName(F: LibFunc_cabs, Name: "_cabs");
347 TLI.setUnavailable(LibFunc_cabsf);
348 TLI.setUnavailable(LibFunc_cbrt);
349 TLI.setUnavailable(LibFunc_cbrtf);
350 TLI.setAvailableWithName(F: LibFunc_copysign, Name: "_copysign");
351 TLI.setAvailableWithName(F: LibFunc_copysignf, Name: "_copysignf");
352 TLI.setUnavailable(LibFunc_exp2);
353 TLI.setUnavailable(LibFunc_exp2f);
354 TLI.setUnavailable(LibFunc_expm1);
355 TLI.setUnavailable(LibFunc_expm1f);
356 TLI.setUnavailable(LibFunc_fmax);
357 TLI.setUnavailable(LibFunc_fmaxf);
358 TLI.setUnavailable(LibFunc_fmin);
359 TLI.setUnavailable(LibFunc_fminf);
360 TLI.setUnavailable(LibFunc_log1p);
361 TLI.setUnavailable(LibFunc_log1pf);
362 TLI.setUnavailable(LibFunc_log2);
363 TLI.setUnavailable(LibFunc_log2f);
364 TLI.setAvailableWithName(F: LibFunc_logb, Name: "_logb");
365 if (hasPartialFloat)
366 TLI.setAvailableWithName(F: LibFunc_logbf, Name: "_logbf");
367 else
368 TLI.setUnavailable(LibFunc_logbf);
369 TLI.setUnavailable(LibFunc_rint);
370 TLI.setUnavailable(LibFunc_rintf);
371 TLI.setUnavailable(LibFunc_round);
372 TLI.setUnavailable(LibFunc_roundf);
373 TLI.setUnavailable(LibFunc_trunc);
374 TLI.setUnavailable(LibFunc_truncf);
375 }
376
377 // Win32 does not support long double C99 math functions.
378 TLI.setUnavailable(LibFunc_acoshl);
379 TLI.setUnavailable(LibFunc_asinhl);
380 TLI.setUnavailable(LibFunc_atanhl);
381 TLI.setUnavailable(LibFunc_cabsl);
382 TLI.setUnavailable(LibFunc_cbrtl);
383 TLI.setUnavailable(LibFunc_copysignl);
384 TLI.setUnavailable(LibFunc_exp2l);
385 TLI.setUnavailable(LibFunc_expm1l);
386 TLI.setUnavailable(LibFunc_fmaxl);
387 TLI.setUnavailable(LibFunc_fminl);
388 TLI.setUnavailable(LibFunc_log1pl);
389 TLI.setUnavailable(LibFunc_log2l);
390 TLI.setUnavailable(LibFunc_logbl);
391 TLI.setUnavailable(LibFunc_nearbyintl);
392 TLI.setUnavailable(LibFunc_rintl);
393 TLI.setUnavailable(LibFunc_roundl);
394 TLI.setUnavailable(LibFunc_truncl);
395
396 // Win32 does not support these functions, but
397 // they are generally available on POSIX-compliant systems.
398 TLI.setUnavailable(LibFunc_access);
399 TLI.setUnavailable(LibFunc_chmod);
400 TLI.setUnavailable(LibFunc_closedir);
401 TLI.setUnavailable(LibFunc_fdopen);
402 TLI.setUnavailable(LibFunc_fileno);
403 TLI.setUnavailable(LibFunc_fseeko);
404 TLI.setUnavailable(LibFunc_fstat);
405 TLI.setUnavailable(LibFunc_ftello);
406 TLI.setUnavailable(LibFunc_gettimeofday);
407 TLI.setUnavailable(LibFunc_memccpy);
408 TLI.setUnavailable(LibFunc_mkdir);
409 TLI.setUnavailable(LibFunc_open);
410 TLI.setUnavailable(LibFunc_opendir);
411 TLI.setUnavailable(LibFunc_pclose);
412 TLI.setUnavailable(LibFunc_popen);
413 TLI.setUnavailable(LibFunc_read);
414 TLI.setUnavailable(LibFunc_rmdir);
415 TLI.setUnavailable(LibFunc_stat);
416 TLI.setUnavailable(LibFunc_strcasecmp);
417 TLI.setUnavailable(LibFunc_strncasecmp);
418 TLI.setUnavailable(LibFunc_unlink);
419 TLI.setUnavailable(LibFunc_utime);
420 TLI.setUnavailable(LibFunc_write);
421 }
422
423 if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) {
424 // These functions aren't available in either MSVC or MinGW environments.
425 TLI.setUnavailable(LibFunc_bcmp);
426 TLI.setUnavailable(LibFunc_bcopy);
427 TLI.setUnavailable(LibFunc_bzero);
428 TLI.setUnavailable(LibFunc_chown);
429 TLI.setUnavailable(LibFunc_ctermid);
430 TLI.setUnavailable(LibFunc_ffs);
431 TLI.setUnavailable(LibFunc_flockfile);
432 TLI.setUnavailable(LibFunc_fstatvfs);
433 TLI.setUnavailable(LibFunc_ftrylockfile);
434 TLI.setUnavailable(LibFunc_funlockfile);
435 TLI.setUnavailable(LibFunc_getitimer);
436 TLI.setUnavailable(LibFunc_getlogin_r);
437 TLI.setUnavailable(LibFunc_getpwnam);
438 TLI.setUnavailable(LibFunc_htonl);
439 TLI.setUnavailable(LibFunc_htons);
440 TLI.setUnavailable(LibFunc_lchown);
441 TLI.setUnavailable(LibFunc_lstat);
442 TLI.setUnavailable(LibFunc_memrchr);
443 TLI.setUnavailable(LibFunc_ntohl);
444 TLI.setUnavailable(LibFunc_ntohs);
445 TLI.setUnavailable(LibFunc_pread);
446 TLI.setUnavailable(LibFunc_pwrite);
447 TLI.setUnavailable(LibFunc_readlink);
448 TLI.setUnavailable(LibFunc_realpath);
449 TLI.setUnavailable(LibFunc_setitimer);
450 TLI.setUnavailable(LibFunc_statvfs);
451 TLI.setUnavailable(LibFunc_stpcpy);
452 TLI.setUnavailable(LibFunc_stpncpy);
453 TLI.setUnavailable(LibFunc_times);
454 TLI.setUnavailable(LibFunc_uname);
455 TLI.setUnavailable(LibFunc_unsetenv);
456 TLI.setUnavailable(LibFunc_utimes);
457 }
458
459 // Pick just one set of new/delete variants.
460 if (T.isOSMSVCRT()) {
461 // MSVC, doesn't have the Itanium new/delete.
462 TLI.setUnavailable(LibFunc_ZdaPv);
463 TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t);
464 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t);
465 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t);
466 TLI.setUnavailable(LibFunc_ZdaPvj);
467 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
468 TLI.setUnavailable(LibFunc_ZdaPvm);
469 TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t);
470 TLI.setUnavailable(LibFunc_ZdlPv);
471 TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t);
472 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t);
473 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t);
474 TLI.setUnavailable(LibFunc_ZdlPvj);
475 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
476 TLI.setUnavailable(LibFunc_ZdlPvm);
477 TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t);
478 TLI.setUnavailable(LibFunc_Znaj);
479 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
480 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
481 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
482 TLI.setUnavailable(LibFunc_Znam);
483 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t);
484 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t12__hot_cold_t);
485 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t);
486 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t);
487 TLI.setUnavailable(LibFunc_Znwj);
488 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
489 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
490 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
491 TLI.setUnavailable(LibFunc_Znwm);
492 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t);
493 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t12__hot_cold_t);
494 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t);
495 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t);
496 TLI.setUnavailable(LibFunc_Znwm12__hot_cold_t);
497 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t12__hot_cold_t);
498 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t12__hot_cold_t);
499 TLI.setUnavailable(LibFunc_Znam12__hot_cold_t);
500 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t12__hot_cold_t);
501 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t12__hot_cold_t);
502 } else {
503 // Not MSVC, assume it's Itanium.
504 TLI.setUnavailable(LibFunc_msvc_new_int);
505 TLI.setUnavailable(LibFunc_msvc_new_int_nothrow);
506 TLI.setUnavailable(LibFunc_msvc_new_longlong);
507 TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow);
508 TLI.setUnavailable(LibFunc_msvc_delete_ptr32);
509 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow);
510 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int);
511 TLI.setUnavailable(LibFunc_msvc_delete_ptr64);
512 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow);
513 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong);
514 TLI.setUnavailable(LibFunc_msvc_new_array_int);
515 TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow);
516 TLI.setUnavailable(LibFunc_msvc_new_array_longlong);
517 TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow);
518 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32);
519 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow);
520 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int);
521 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64);
522 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow);
523 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong);
524 }
525
526 switch (T.getOS()) {
527 case Triple::MacOSX:
528 // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
529 // and their names are __exp10 and __exp10f. exp10l is not available on
530 // OS X or iOS.
531 TLI.setUnavailable(LibFunc_exp10l);
532 if (T.isMacOSXVersionLT(Major: 10, Minor: 9)) {
533 TLI.setUnavailable(LibFunc_exp10);
534 TLI.setUnavailable(LibFunc_exp10f);
535 } else {
536 TLI.setAvailableWithName(F: LibFunc_exp10, Name: "__exp10");
537 TLI.setAvailableWithName(F: LibFunc_exp10f, Name: "__exp10f");
538 }
539 break;
540 case Triple::IOS:
541 case Triple::TvOS:
542 case Triple::WatchOS:
543 case Triple::XROS:
544 TLI.setUnavailable(LibFunc_exp10l);
545 if (!T.isWatchOS() &&
546 (T.isOSVersionLT(Major: 7, Minor: 0) || (T.isOSVersionLT(Major: 9, Minor: 0) && T.isX86()))) {
547 TLI.setUnavailable(LibFunc_exp10);
548 TLI.setUnavailable(LibFunc_exp10f);
549 } else {
550 TLI.setAvailableWithName(F: LibFunc_exp10, Name: "__exp10");
551 TLI.setAvailableWithName(F: LibFunc_exp10f, Name: "__exp10f");
552 }
553 break;
554 case Triple::Linux:
555 // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
556 // buggy prior to glibc version 2.18. Until this version is widely deployed
557 // or we have a reasonable detection strategy, we cannot use exp10 reliably
558 // on Linux.
559 //
560 // Fall through to disable all of them.
561 [[fallthrough]];
562 default:
563 TLI.setUnavailable(LibFunc_exp10);
564 TLI.setUnavailable(LibFunc_exp10f);
565 TLI.setUnavailable(LibFunc_exp10l);
566 }
567
568 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
569 // Linux (GLIBC):
570 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
571 // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
572 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
573 switch (T.getOS()) {
574 case Triple::Darwin:
575 case Triple::MacOSX:
576 case Triple::IOS:
577 case Triple::TvOS:
578 case Triple::WatchOS:
579 case Triple::XROS:
580 case Triple::FreeBSD:
581 case Triple::Linux:
582 break;
583 default:
584 TLI.setUnavailable(LibFunc_ffsl);
585 }
586
587 // ffsll is available on at least FreeBSD and Linux (GLIBC):
588 // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
589 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
590 switch (T.getOS()) {
591 case Triple::Darwin:
592 case Triple::MacOSX:
593 case Triple::IOS:
594 case Triple::TvOS:
595 case Triple::WatchOS:
596 case Triple::XROS:
597 case Triple::FreeBSD:
598 case Triple::Linux:
599 break;
600 default:
601 TLI.setUnavailable(LibFunc_ffsll);
602 }
603
604 // The following functions are available on at least FreeBSD:
605 // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
606 // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
607 // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
608 if (!T.isOSFreeBSD()) {
609 TLI.setUnavailable(LibFunc_fls);
610 TLI.setUnavailable(LibFunc_flsl);
611 TLI.setUnavailable(LibFunc_flsll);
612 }
613
614 // The following functions are only available on GNU/Linux (using glibc).
615 // Linux variants without glibc (eg: bionic, musl) may have some subset.
616 if (!T.isOSLinux() || !T.isGNUEnvironment()) {
617 TLI.setUnavailable(LibFunc_dunder_strdup);
618 TLI.setUnavailable(LibFunc_dunder_strtok_r);
619 TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
620 TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
621 TLI.setUnavailable(LibFunc_under_IO_getc);
622 TLI.setUnavailable(LibFunc_under_IO_putc);
623 // But, Android and musl have memalign.
624 if (!T.isAndroid() && !T.isMusl())
625 TLI.setUnavailable(LibFunc_memalign);
626 TLI.setUnavailable(LibFunc_fopen64);
627 TLI.setUnavailable(LibFunc_fseeko64);
628 TLI.setUnavailable(LibFunc_fstat64);
629 TLI.setUnavailable(LibFunc_fstatvfs64);
630 TLI.setUnavailable(LibFunc_ftello64);
631 TLI.setUnavailable(LibFunc_lstat64);
632 TLI.setUnavailable(LibFunc_open64);
633 TLI.setUnavailable(LibFunc_stat64);
634 TLI.setUnavailable(LibFunc_statvfs64);
635 TLI.setUnavailable(LibFunc_tmpfile64);
636
637 // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
638 // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
639 // so we keep these functions around just so that they're recognized by
640 // the ConstantFolder.
641 TLI.setUnavailable(LibFunc_acos_finite);
642 TLI.setUnavailable(LibFunc_acosf_finite);
643 TLI.setUnavailable(LibFunc_acosl_finite);
644 TLI.setUnavailable(LibFunc_acosh_finite);
645 TLI.setUnavailable(LibFunc_acoshf_finite);
646 TLI.setUnavailable(LibFunc_acoshl_finite);
647 TLI.setUnavailable(LibFunc_asin_finite);
648 TLI.setUnavailable(LibFunc_asinf_finite);
649 TLI.setUnavailable(LibFunc_asinl_finite);
650 TLI.setUnavailable(LibFunc_atan2_finite);
651 TLI.setUnavailable(LibFunc_atan2f_finite);
652 TLI.setUnavailable(LibFunc_atan2l_finite);
653 TLI.setUnavailable(LibFunc_atanh_finite);
654 TLI.setUnavailable(LibFunc_atanhf_finite);
655 TLI.setUnavailable(LibFunc_atanhl_finite);
656 TLI.setUnavailable(LibFunc_cosh_finite);
657 TLI.setUnavailable(LibFunc_coshf_finite);
658 TLI.setUnavailable(LibFunc_coshl_finite);
659 TLI.setUnavailable(LibFunc_exp10_finite);
660 TLI.setUnavailable(LibFunc_exp10f_finite);
661 TLI.setUnavailable(LibFunc_exp10l_finite);
662 TLI.setUnavailable(LibFunc_exp2_finite);
663 TLI.setUnavailable(LibFunc_exp2f_finite);
664 TLI.setUnavailable(LibFunc_exp2l_finite);
665 TLI.setUnavailable(LibFunc_exp_finite);
666 TLI.setUnavailable(LibFunc_expf_finite);
667 TLI.setUnavailable(LibFunc_expl_finite);
668 TLI.setUnavailable(LibFunc_log10_finite);
669 TLI.setUnavailable(LibFunc_log10f_finite);
670 TLI.setUnavailable(LibFunc_log10l_finite);
671 TLI.setUnavailable(LibFunc_log2_finite);
672 TLI.setUnavailable(LibFunc_log2f_finite);
673 TLI.setUnavailable(LibFunc_log2l_finite);
674 TLI.setUnavailable(LibFunc_log_finite);
675 TLI.setUnavailable(LibFunc_logf_finite);
676 TLI.setUnavailable(LibFunc_logl_finite);
677 TLI.setUnavailable(LibFunc_pow_finite);
678 TLI.setUnavailable(LibFunc_powf_finite);
679 TLI.setUnavailable(LibFunc_powl_finite);
680 TLI.setUnavailable(LibFunc_sinh_finite);
681 TLI.setUnavailable(LibFunc_sinhf_finite);
682 TLI.setUnavailable(LibFunc_sinhl_finite);
683 TLI.setUnavailable(LibFunc_sqrt_finite);
684 TLI.setUnavailable(LibFunc_sqrtf_finite);
685 TLI.setUnavailable(LibFunc_sqrtl_finite);
686 }
687
688 if ((T.isOSLinux() && T.isGNUEnvironment()) ||
689 (T.isAndroid() && !T.isAndroidVersionLT(Major: 28))) {
690 // available IO unlocked variants on GNU/Linux and Android P or later
691 TLI.setAvailable(LibFunc_getc_unlocked);
692 TLI.setAvailable(LibFunc_getchar_unlocked);
693 TLI.setAvailable(LibFunc_putc_unlocked);
694 TLI.setAvailable(LibFunc_putchar_unlocked);
695 TLI.setAvailable(LibFunc_fputc_unlocked);
696 TLI.setAvailable(LibFunc_fgetc_unlocked);
697 TLI.setAvailable(LibFunc_fread_unlocked);
698 TLI.setAvailable(LibFunc_fwrite_unlocked);
699 TLI.setAvailable(LibFunc_fputs_unlocked);
700 TLI.setAvailable(LibFunc_fgets_unlocked);
701 }
702
703 if (T.isAndroid() && T.isAndroidVersionLT(Major: 21)) {
704 TLI.setUnavailable(LibFunc_stpcpy);
705 TLI.setUnavailable(LibFunc_stpncpy);
706 }
707
708 if (T.isPS()) {
709 // PS4/PS5 do have memalign.
710 TLI.setAvailable(LibFunc_memalign);
711
712 // PS4/PS5 do not have new/delete with "unsigned int" size parameter;
713 // they only have the "unsigned long" versions.
714 TLI.setUnavailable(LibFunc_ZdaPvj);
715 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
716 TLI.setUnavailable(LibFunc_ZdlPvj);
717 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
718 TLI.setUnavailable(LibFunc_Znaj);
719 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
720 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
721 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
722 TLI.setUnavailable(LibFunc_Znwj);
723 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
724 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
725 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
726
727 // None of the *_chk functions.
728 TLI.setUnavailable(LibFunc_memccpy_chk);
729 TLI.setUnavailable(LibFunc_memcpy_chk);
730 TLI.setUnavailable(LibFunc_memmove_chk);
731 TLI.setUnavailable(LibFunc_mempcpy_chk);
732 TLI.setUnavailable(LibFunc_memset_chk);
733 TLI.setUnavailable(LibFunc_snprintf_chk);
734 TLI.setUnavailable(LibFunc_sprintf_chk);
735 TLI.setUnavailable(LibFunc_stpcpy_chk);
736 TLI.setUnavailable(LibFunc_stpncpy_chk);
737 TLI.setUnavailable(LibFunc_strcat_chk);
738 TLI.setUnavailable(LibFunc_strcpy_chk);
739 TLI.setUnavailable(LibFunc_strlcat_chk);
740 TLI.setUnavailable(LibFunc_strlcpy_chk);
741 TLI.setUnavailable(LibFunc_strlen_chk);
742 TLI.setUnavailable(LibFunc_strncat_chk);
743 TLI.setUnavailable(LibFunc_strncpy_chk);
744 TLI.setUnavailable(LibFunc_vsnprintf_chk);
745 TLI.setUnavailable(LibFunc_vsprintf_chk);
746
747 // Various Posix system functions.
748 TLI.setUnavailable(LibFunc_access);
749 TLI.setUnavailable(LibFunc_chmod);
750 TLI.setUnavailable(LibFunc_chown);
751 TLI.setUnavailable(LibFunc_closedir);
752 TLI.setUnavailable(LibFunc_ctermid);
753 TLI.setUnavailable(LibFunc_execl);
754 TLI.setUnavailable(LibFunc_execle);
755 TLI.setUnavailable(LibFunc_execlp);
756 TLI.setUnavailable(LibFunc_execv);
757 TLI.setUnavailable(LibFunc_execvP);
758 TLI.setUnavailable(LibFunc_execve);
759 TLI.setUnavailable(LibFunc_execvp);
760 TLI.setUnavailable(LibFunc_execvpe);
761 TLI.setUnavailable(LibFunc_fork);
762 TLI.setUnavailable(LibFunc_fstat);
763 TLI.setUnavailable(LibFunc_fstatvfs);
764 TLI.setUnavailable(LibFunc_getenv);
765 TLI.setUnavailable(LibFunc_getitimer);
766 TLI.setUnavailable(LibFunc_getlogin_r);
767 TLI.setUnavailable(LibFunc_getpwnam);
768 TLI.setUnavailable(LibFunc_gettimeofday);
769 TLI.setUnavailable(LibFunc_lchown);
770 TLI.setUnavailable(LibFunc_lstat);
771 TLI.setUnavailable(LibFunc_mkdir);
772 TLI.setUnavailable(LibFunc_open);
773 TLI.setUnavailable(LibFunc_opendir);
774 TLI.setUnavailable(LibFunc_pclose);
775 TLI.setUnavailable(LibFunc_popen);
776 TLI.setUnavailable(LibFunc_pread);
777 TLI.setUnavailable(LibFunc_pwrite);
778 TLI.setUnavailable(LibFunc_read);
779 TLI.setUnavailable(LibFunc_readlink);
780 TLI.setUnavailable(LibFunc_realpath);
781 TLI.setUnavailable(LibFunc_rename);
782 TLI.setUnavailable(LibFunc_rmdir);
783 TLI.setUnavailable(LibFunc_setitimer);
784 TLI.setUnavailable(LibFunc_stat);
785 TLI.setUnavailable(LibFunc_statvfs);
786 TLI.setUnavailable(LibFunc_system);
787 TLI.setUnavailable(LibFunc_times);
788 TLI.setUnavailable(LibFunc_tmpfile);
789 TLI.setUnavailable(LibFunc_unlink);
790 TLI.setUnavailable(LibFunc_uname);
791 TLI.setUnavailable(LibFunc_unsetenv);
792 TLI.setUnavailable(LibFunc_utime);
793 TLI.setUnavailable(LibFunc_utimes);
794 TLI.setUnavailable(LibFunc_valloc);
795 TLI.setUnavailable(LibFunc_write);
796
797 // Miscellaneous other functions not provided.
798 TLI.setUnavailable(LibFunc_atomic_load);
799 TLI.setUnavailable(LibFunc_atomic_store);
800 TLI.setUnavailable(LibFunc___kmpc_alloc_shared);
801 TLI.setUnavailable(LibFunc___kmpc_free_shared);
802 TLI.setUnavailable(LibFunc_dunder_strndup);
803 TLI.setUnavailable(LibFunc_bcmp);
804 TLI.setUnavailable(LibFunc_bcopy);
805 TLI.setUnavailable(LibFunc_bzero);
806 TLI.setUnavailable(LibFunc_cabs);
807 TLI.setUnavailable(LibFunc_cabsf);
808 TLI.setUnavailable(LibFunc_cabsl);
809 TLI.setUnavailable(LibFunc_ffs);
810 TLI.setUnavailable(LibFunc_flockfile);
811 TLI.setUnavailable(LibFunc_fseeko);
812 TLI.setUnavailable(LibFunc_ftello);
813 TLI.setUnavailable(LibFunc_ftrylockfile);
814 TLI.setUnavailable(LibFunc_funlockfile);
815 TLI.setUnavailable(LibFunc_htonl);
816 TLI.setUnavailable(LibFunc_htons);
817 TLI.setUnavailable(LibFunc_isascii);
818 TLI.setUnavailable(LibFunc_memccpy);
819 TLI.setUnavailable(LibFunc_mempcpy);
820 TLI.setUnavailable(LibFunc_memrchr);
821 TLI.setUnavailable(LibFunc_ntohl);
822 TLI.setUnavailable(LibFunc_ntohs);
823 TLI.setUnavailable(LibFunc_reallocf);
824 TLI.setUnavailable(LibFunc_roundeven);
825 TLI.setUnavailable(LibFunc_roundevenf);
826 TLI.setUnavailable(LibFunc_roundevenl);
827 TLI.setUnavailable(LibFunc_stpcpy);
828 TLI.setUnavailable(LibFunc_stpncpy);
829 TLI.setUnavailable(LibFunc_strlcat);
830 TLI.setUnavailable(LibFunc_strlcpy);
831 TLI.setUnavailable(LibFunc_strndup);
832 TLI.setUnavailable(LibFunc_strnlen);
833 TLI.setUnavailable(LibFunc_toascii);
834 }
835
836 // As currently implemented in clang, NVPTX code has no standard library to
837 // speak of. Headers provide a standard-ish library implementation, but many
838 // of the signatures are wrong -- for example, many libm functions are not
839 // extern "C".
840 //
841 // libdevice, an IR library provided by nvidia, is linked in by the front-end,
842 // but only used functions are provided to llvm. Moreover, most of the
843 // functions in libdevice don't map precisely to standard library functions.
844 //
845 // FIXME: Having no standard library prevents e.g. many fastmath
846 // optimizations, so this situation should be fixed.
847 if (T.isNVPTX()) {
848 TLI.disableAllFunctions();
849 TLI.setAvailable(LibFunc_nvvm_reflect);
850 TLI.setAvailable(llvm::LibFunc_malloc);
851 TLI.setAvailable(llvm::LibFunc_free);
852
853 // TODO: We could enable the following two according to [0] but we haven't
854 // done an evaluation wrt. the performance implications.
855 // [0]
856 // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations
857 //
858 // TLI.setAvailable(llvm::LibFunc_memcpy);
859 // TLI.setAvailable(llvm::LibFunc_memset);
860
861 TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
862 TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
863 } else {
864 TLI.setUnavailable(LibFunc_nvvm_reflect);
865 }
866
867 // These vec_malloc/free routines are only available on AIX.
868 if (!T.isOSAIX()) {
869 TLI.setUnavailable(LibFunc_vec_calloc);
870 TLI.setUnavailable(LibFunc_vec_malloc);
871 TLI.setUnavailable(LibFunc_vec_realloc);
872 TLI.setUnavailable(LibFunc_vec_free);
873 }
874
875 TLI.addVectorizableFunctionsFromVecLib(VecLib: ClVectorLibrary, TargetTriple: T);
876}
877
878TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
879 // Default to everything being available.
880 memset(s: AvailableArray, c: -1, n: sizeof(AvailableArray));
881
882 initialize(TLI&: *this, T: Triple(), StandardNames);
883}
884
885TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
886 // Default to everything being available.
887 memset(s: AvailableArray, c: -1, n: sizeof(AvailableArray));
888
889 initialize(TLI&: *this, T, StandardNames);
890}
891
892TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
893 : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
894 ShouldExtI32Return(TLI.ShouldExtI32Return),
895 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
896 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return),
897 SizeOfInt(TLI.SizeOfInt) {
898 memcpy(dest: AvailableArray, src: TLI.AvailableArray, n: sizeof(AvailableArray));
899 VectorDescs = TLI.VectorDescs;
900 ScalarDescs = TLI.ScalarDescs;
901}
902
903TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
904 : CustomNames(std::move(TLI.CustomNames)),
905 ShouldExtI32Param(TLI.ShouldExtI32Param),
906 ShouldExtI32Return(TLI.ShouldExtI32Return),
907 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
908 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return),
909 SizeOfInt(TLI.SizeOfInt) {
910 std::move(first: std::begin(arr&: TLI.AvailableArray), last: std::end(arr&: TLI.AvailableArray),
911 result: AvailableArray);
912 VectorDescs = TLI.VectorDescs;
913 ScalarDescs = TLI.ScalarDescs;
914}
915
916TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
917 CustomNames = TLI.CustomNames;
918 ShouldExtI32Param = TLI.ShouldExtI32Param;
919 ShouldExtI32Return = TLI.ShouldExtI32Return;
920 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
921 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return;
922 SizeOfInt = TLI.SizeOfInt;
923 memcpy(dest: AvailableArray, src: TLI.AvailableArray, n: sizeof(AvailableArray));
924 return *this;
925}
926
927TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
928 CustomNames = std::move(TLI.CustomNames);
929 ShouldExtI32Param = TLI.ShouldExtI32Param;
930 ShouldExtI32Return = TLI.ShouldExtI32Return;
931 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
932 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return;
933 SizeOfInt = TLI.SizeOfInt;
934 std::move(first: std::begin(arr&: TLI.AvailableArray), last: std::end(arr&: TLI.AvailableArray),
935 result: AvailableArray);
936 return *this;
937}
938
939static StringRef sanitizeFunctionName(StringRef funcName) {
940 // Filter out empty names and names containing null bytes, those can't be in
941 // our table.
942 if (funcName.empty() || funcName.contains(C: '\0'))
943 return StringRef();
944
945 // Check for \01 prefix that is used to mangle __asm declarations and
946 // strip it if present.
947 return GlobalValue::dropLLVMManglingEscape(Name: funcName);
948}
949
950static DenseMap<StringRef, LibFunc>
951buildIndexMap(ArrayRef<StringLiteral> StandardNames) {
952 DenseMap<StringRef, LibFunc> Indices;
953 unsigned Idx = 0;
954 Indices.reserve(NumEntries: LibFunc::NumLibFuncs);
955 for (const auto &Func : StandardNames)
956 Indices[Func] = static_cast<LibFunc>(Idx++);
957 return Indices;
958}
959
960bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
961 funcName = sanitizeFunctionName(funcName);
962 if (funcName.empty())
963 return false;
964
965 static const DenseMap<StringRef, LibFunc> Indices =
966 buildIndexMap(StandardNames);
967
968 if (auto Loc = Indices.find(Val: funcName); Loc != Indices.end()) {
969 F = Loc->second;
970 return true;
971 }
972 return false;
973}
974
975// Return true if ArgTy matches Ty.
976
977static bool matchType(FuncArgTypeID ArgTy, const Type *Ty, unsigned IntBits,
978 unsigned SizeTBits) {
979 switch (ArgTy) {
980 case Void:
981 return Ty->isVoidTy();
982 case Bool:
983 return Ty->isIntegerTy(Bitwidth: 8);
984 case Int16:
985 return Ty->isIntegerTy(Bitwidth: 16);
986 case Int32:
987 return Ty->isIntegerTy(Bitwidth: 32);
988 case Int:
989 return Ty->isIntegerTy(Bitwidth: IntBits);
990 case IntPlus:
991 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits;
992 case IntX:
993 return Ty->isIntegerTy();
994 case Long:
995 // TODO: Figure out and use long size.
996 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits;
997 case Int64:
998 return Ty->isIntegerTy(Bitwidth: 64);
999 case LLong:
1000 return Ty->isIntegerTy(Bitwidth: 64);
1001 case SizeT:
1002 case SSizeT:
1003 return Ty->isIntegerTy(Bitwidth: SizeTBits);
1004 case Flt:
1005 return Ty->isFloatTy();
1006 case Dbl:
1007 return Ty->isDoubleTy();
1008 // TODO: Tighten this up.
1009 case LDbl:
1010 return Ty->isFloatingPointTy();
1011 case Floating:
1012 return Ty->isFloatingPointTy();
1013 case Ptr:
1014 return Ty->isPointerTy();
1015 case Struct:
1016 return Ty->isStructTy();
1017 default:
1018 break;
1019 }
1020
1021 llvm_unreachable("Invalid type");
1022}
1023
1024bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
1025 LibFunc F,
1026 const Module &M) const {
1027 unsigned NumParams = FTy.getNumParams();
1028
1029 switch (F) {
1030 // Special handling for <complex.h> functions:
1031 case LibFunc_cabs:
1032 case LibFunc_cabsf:
1033 case LibFunc_cabsl: {
1034 Type *RetTy = FTy.getReturnType();
1035 if (!RetTy->isFloatingPointTy())
1036 return false;
1037
1038 Type *ParamTy = FTy.getParamType(i: 0);
1039 // NOTE: These prototypes are target specific and currently support
1040 // "complex" passed as an array or discrete real & imaginary parameters.
1041 // Add other calling conventions to enable libcall optimizations.
1042 if (NumParams == 1)
1043 return (ParamTy->isArrayTy() && ParamTy->getArrayNumElements() == 2 &&
1044 ParamTy->getArrayElementType() == RetTy);
1045 else if (NumParams == 2)
1046 return ParamTy == RetTy && FTy.getParamType(i: 1) == RetTy;
1047
1048 return false;
1049 }
1050 // Special handling for the sincospi functions that return either
1051 // a struct or vector:
1052 case LibFunc_sincospi_stret:
1053 case LibFunc_sincospif_stret: {
1054 if (NumParams != 1)
1055 return false;
1056
1057 Type *RetTy = FTy.getReturnType();
1058 Type *ParamTy = FTy.getParamType(i: 0);
1059 if (auto *Ty = dyn_cast<StructType>(Val: RetTy)) {
1060 if (Ty->getNumElements() != 2)
1061 return false;
1062 return (Ty->getElementType(N: 0) == ParamTy &&
1063 Ty->getElementType(N: 1) == ParamTy);
1064 }
1065
1066 if (auto *Ty = dyn_cast<FixedVectorType>(Val: RetTy)) {
1067 if (Ty->getNumElements() != 2)
1068 return false;
1069 return Ty->getElementType() == ParamTy;
1070 }
1071
1072 return false;
1073 }
1074
1075 default:
1076 break;
1077 }
1078
1079 unsigned IntBits = getIntSize();
1080 unsigned SizeTBits = getSizeTSize(M);
1081 unsigned Idx = 0;
1082
1083 // Iterate over the type ids in the function prototype, matching each
1084 // against the function's type FTy, starting with its return type.
1085 // Return true if both match in number and kind, inclduing the ellipsis.
1086 Type *Ty = FTy.getReturnType(), *LastTy = Ty;
1087 const auto &ProtoTypes = Signatures[F];
1088 for (auto TyID : ProtoTypes) {
1089 if (Idx && TyID == Void)
1090 // Except in the first position where it designates the function's
1091 // return type Void ends the argument list.
1092 break;
1093
1094 if (TyID == Ellip) {
1095 // The ellipsis ends the protoype list but is not a part of FTy's
1096 // argument list. Except when it's last it must be followed by
1097 // Void.
1098 assert(Idx == ProtoTypes.size() - 1 || ProtoTypes[Idx + 1] == Void);
1099 return FTy.isFunctionVarArg();
1100 }
1101
1102 if (TyID == Same) {
1103 assert(Idx != 0 && "Type ID 'Same' must not be first!");
1104 if (Ty != LastTy)
1105 return false;
1106 } else {
1107 if (!Ty || !matchType(ArgTy: TyID, Ty, IntBits, SizeTBits))
1108 return false;
1109 LastTy = Ty;
1110 }
1111
1112 if (Idx == NumParams) {
1113 // There's at least one and at most two more type ids than there are
1114 // arguments in FTy's argument list.
1115 Ty = nullptr;
1116 ++Idx;
1117 continue;
1118 }
1119
1120 Ty = FTy.getParamType(i: Idx++);
1121 }
1122
1123 // Return success only if all entries on both lists have been processed
1124 // and the function is not a variadic one.
1125 return Idx == NumParams + 1 && !FTy.isFunctionVarArg();
1126}
1127
1128bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1129 LibFunc &F) const {
1130 // Intrinsics don't overlap w/libcalls; if our module has a large number of
1131 // intrinsics, this ends up being an interesting compile time win since we
1132 // avoid string normalization and comparison.
1133 if (FDecl.isIntrinsic()) return false;
1134
1135 const Module *M = FDecl.getParent();
1136 assert(M && "Expecting FDecl to be connected to a Module.");
1137
1138 if (FDecl.LibFuncCache == Function::UnknownLibFunc)
1139 if (!getLibFunc(funcName: FDecl.getName(), F&: FDecl.LibFuncCache))
1140 FDecl.LibFuncCache = NotLibFunc;
1141
1142 if (FDecl.LibFuncCache == NotLibFunc)
1143 return false;
1144
1145 F = FDecl.LibFuncCache;
1146 return isValidProtoForLibFunc(FTy: *FDecl.getFunctionType(), F, M: *M);
1147}
1148
1149bool TargetLibraryInfoImpl::getLibFunc(unsigned int Opcode, Type *Ty,
1150 LibFunc &F) const {
1151 // Must be a frem instruction with float or double arguments.
1152 if (Opcode != Instruction::FRem || (!Ty->isDoubleTy() && !Ty->isFloatTy()))
1153 return false;
1154
1155 F = Ty->isDoubleTy() ? LibFunc_fmod : LibFunc_fmodf;
1156 return true;
1157}
1158
1159void TargetLibraryInfoImpl::disableAllFunctions() {
1160 memset(s: AvailableArray, c: 0, n: sizeof(AvailableArray));
1161}
1162
1163static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1164 return LHS.getScalarFnName() < RHS.getScalarFnName();
1165}
1166
1167static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1168 return LHS.getVectorFnName() < RHS.getVectorFnName();
1169}
1170
1171static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1172 return LHS.getScalarFnName() < S;
1173}
1174
1175void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1176 llvm::append_range(C&: VectorDescs, R&: Fns);
1177 llvm::sort(C&: VectorDescs, Comp: compareByScalarFnName);
1178
1179 llvm::append_range(C&: ScalarDescs, R&: Fns);
1180 llvm::sort(C&: ScalarDescs, Comp: compareByVectorFnName);
1181}
1182
1183void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1184 enum VectorLibrary VecLib, const llvm::Triple &TargetTriple) {
1185 switch (VecLib) {
1186 case Accelerate: {
1187 const VecDesc VecFuncs[] = {
1188 #define TLI_DEFINE_ACCELERATE_VECFUNCS
1189 #include "llvm/Analysis/VecFuncs.def"
1190 };
1191 addVectorizableFunctions(Fns: VecFuncs);
1192 break;
1193 }
1194 case DarwinLibSystemM: {
1195 const VecDesc VecFuncs[] = {
1196 #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS
1197 #include "llvm/Analysis/VecFuncs.def"
1198 };
1199 addVectorizableFunctions(Fns: VecFuncs);
1200 break;
1201 }
1202 case LIBMVEC_X86: {
1203 const VecDesc VecFuncs[] = {
1204 #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS
1205 #include "llvm/Analysis/VecFuncs.def"
1206 };
1207 addVectorizableFunctions(Fns: VecFuncs);
1208 break;
1209 }
1210 case MASSV: {
1211 const VecDesc VecFuncs[] = {
1212 #define TLI_DEFINE_MASSV_VECFUNCS
1213 #include "llvm/Analysis/VecFuncs.def"
1214 };
1215 addVectorizableFunctions(Fns: VecFuncs);
1216 break;
1217 }
1218 case SVML: {
1219 const VecDesc VecFuncs[] = {
1220 #define TLI_DEFINE_SVML_VECFUNCS
1221 #include "llvm/Analysis/VecFuncs.def"
1222 };
1223 addVectorizableFunctions(Fns: VecFuncs);
1224 break;
1225 }
1226 case SLEEFGNUABI: {
1227 const VecDesc VecFuncs_VF2[] = {
1228#define TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS
1229#define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \
1230 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX},
1231#include "llvm/Analysis/VecFuncs.def"
1232 };
1233 const VecDesc VecFuncs_VF4[] = {
1234#define TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS
1235#define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \
1236 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX},
1237#include "llvm/Analysis/VecFuncs.def"
1238 };
1239 const VecDesc VecFuncs_VFScalable[] = {
1240#define TLI_DEFINE_SLEEFGNUABI_SCALABLE_VECFUNCS
1241#define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \
1242 {SCAL, VEC, VF, MASK, VABI_PREFIX},
1243#include "llvm/Analysis/VecFuncs.def"
1244 };
1245
1246 switch (TargetTriple.getArch()) {
1247 default:
1248 break;
1249 case llvm::Triple::aarch64:
1250 case llvm::Triple::aarch64_be:
1251 addVectorizableFunctions(Fns: VecFuncs_VF2);
1252 addVectorizableFunctions(Fns: VecFuncs_VF4);
1253 addVectorizableFunctions(Fns: VecFuncs_VFScalable);
1254 break;
1255 }
1256 break;
1257 }
1258 case ArmPL: {
1259 const VecDesc VecFuncs[] = {
1260#define TLI_DEFINE_ARMPL_VECFUNCS
1261#define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \
1262 {SCAL, VEC, VF, MASK, VABI_PREFIX},
1263#include "llvm/Analysis/VecFuncs.def"
1264 };
1265
1266 switch (TargetTriple.getArch()) {
1267 default:
1268 break;
1269 case llvm::Triple::aarch64:
1270 case llvm::Triple::aarch64_be:
1271 addVectorizableFunctions(Fns: VecFuncs);
1272 break;
1273 }
1274 break;
1275 }
1276 case NoLibrary:
1277 break;
1278 }
1279}
1280
1281bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1282 funcName = sanitizeFunctionName(funcName);
1283 if (funcName.empty())
1284 return false;
1285
1286 std::vector<VecDesc>::const_iterator I =
1287 llvm::lower_bound(Range: VectorDescs, Value&: funcName, C: compareWithScalarFnName);
1288 return I != VectorDescs.end() && StringRef(I->getScalarFnName()) == funcName;
1289}
1290
1291StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1292 const ElementCount &VF,
1293 bool Masked) const {
1294 const VecDesc *VD = getVectorMappingInfo(F, VF, Masked);
1295 if (VD)
1296 return VD->getVectorFnName();
1297 return StringRef();
1298}
1299
1300const VecDesc *
1301TargetLibraryInfoImpl::getVectorMappingInfo(StringRef F, const ElementCount &VF,
1302 bool Masked) const {
1303 F = sanitizeFunctionName(funcName: F);
1304 if (F.empty())
1305 return nullptr;
1306 std::vector<VecDesc>::const_iterator I =
1307 llvm::lower_bound(Range: VectorDescs, Value&: F, C: compareWithScalarFnName);
1308 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == F) {
1309 if ((I->getVectorizationFactor() == VF) && (I->isMasked() == Masked))
1310 return &(*I);
1311 ++I;
1312 }
1313 return nullptr;
1314}
1315
1316TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
1317 FunctionAnalysisManager &) {
1318 if (!BaselineInfoImpl)
1319 BaselineInfoImpl =
1320 TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1321 return TargetLibraryInfo(*BaselineInfoImpl, &F);
1322}
1323
1324unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1325 if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1326 Val: M.getModuleFlag(Key: "wchar_size")))
1327 return cast<ConstantInt>(Val: ShortWChar->getValue())->getZExtValue();
1328 return 0;
1329}
1330
1331unsigned TargetLibraryInfoImpl::getSizeTSize(const Module &M) const {
1332 // There is really no guarantee that sizeof(size_t) is equal to sizeof(int*).
1333 // If that isn't true then it should be possible to derive the SizeTTy from
1334 // the target triple here instead and do an early return.
1335
1336 // Historically LLVM assume that size_t has same size as intptr_t (hence
1337 // deriving the size from sizeof(int*) in address space zero). This should
1338 // work for most targets. For future consideration: DataLayout also implement
1339 // getIndexSizeInBits which might map better to size_t compared to
1340 // getPointerSizeInBits. Hard coding address space zero here might be
1341 // unfortunate as well. Maybe getDefaultGlobalsAddressSpace() or
1342 // getAllocaAddrSpace() is better.
1343 unsigned AddressSpace = 0;
1344 return M.getDataLayout().getPointerSizeInBits(AS: AddressSpace);
1345}
1346
1347TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1348 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1349 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1350}
1351
1352TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1353 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1354 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1355}
1356
1357TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1358 const TargetLibraryInfoImpl &TLIImpl)
1359 : ImmutablePass(ID), TLA(TLIImpl) {
1360 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1361}
1362
1363AnalysisKey TargetLibraryAnalysis::Key;
1364
1365// Register the basic pass.
1366INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1367 "Target Library Information", false, true)
1368char TargetLibraryInfoWrapperPass::ID = 0;
1369
1370void TargetLibraryInfoWrapperPass::anchor() {}
1371
1372void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF,
1373 ElementCount &FixedVF,
1374 ElementCount &ScalableVF) const {
1375 ScalarF = sanitizeFunctionName(funcName: ScalarF);
1376 // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the
1377 // same as a scalar.
1378 ScalableVF = ElementCount::getScalable(MinVal: 0);
1379 FixedVF = ElementCount::getFixed(MinVal: 1);
1380 if (ScalarF.empty())
1381 return;
1382
1383 std::vector<VecDesc>::const_iterator I =
1384 llvm::lower_bound(Range: VectorDescs, Value&: ScalarF, C: compareWithScalarFnName);
1385 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == ScalarF) {
1386 ElementCount *VF =
1387 I->getVectorizationFactor().isScalable() ? &ScalableVF : &FixedVF;
1388 if (ElementCount::isKnownGT(LHS: I->getVectorizationFactor(), RHS: *VF))
1389 *VF = I->getVectorizationFactor();
1390 ++I;
1391 }
1392}
1393

source code of llvm/lib/Analysis/TargetLibraryInfo.cpp