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_getchar_unlocked);
127 TLI.setUnavailable(LibFunc_putc_unlocked);
128 TLI.setUnavailable(LibFunc_putchar_unlocked);
129 TLI.setUnavailable(LibFunc_fputc_unlocked);
130 TLI.setUnavailable(LibFunc_fgetc_unlocked);
131 TLI.setUnavailable(LibFunc_fread_unlocked);
132 TLI.setUnavailable(LibFunc_fwrite_unlocked);
133 TLI.setUnavailable(LibFunc_fputs_unlocked);
134 TLI.setUnavailable(LibFunc_fgets_unlocked);
135
136 bool ShouldExtI32Param = false, ShouldExtI32Return = false,
137 ShouldSignExtI32Param = false;
138 // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
139 // returns corresponding to C-level ints and unsigned ints.
140 if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
141 T.getArch() == Triple::systemz) {
142 ShouldExtI32Param = true;
143 ShouldExtI32Return = true;
144 }
145 // Mips, on the other hand, needs signext on i32 parameters corresponding
146 // to both signed and unsigned ints.
147 if (T.isMIPS()) {
148 ShouldSignExtI32Param = true;
149 }
150 TLI.setShouldExtI32Param(ShouldExtI32Param);
151 TLI.setShouldExtI32Return(ShouldExtI32Return);
152 TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
153
154 if (T.isAMDGPU())
155 TLI.disableAllFunctions();
156
157 // There are no library implementations of memcpy and memset for AMD gpus and
158 // these can be difficult to lower in the backend.
159 if (T.isAMDGPU()) {
160 TLI.setUnavailable(LibFunc_memcpy);
161 TLI.setUnavailable(LibFunc_memset);
162 TLI.setUnavailable(LibFunc_memset_pattern16);
163 return;
164 }
165
166 // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
167 // All versions of watchOS support it.
168 if (T.isMacOSX()) {
169 // available IO unlocked variants on Mac OS X
170 TLI.setAvailable(LibFunc_getc_unlocked);
171 TLI.setAvailable(LibFunc_getchar_unlocked);
172 TLI.setAvailable(LibFunc_putc_unlocked);
173 TLI.setAvailable(LibFunc_putchar_unlocked);
174
175 if (T.isMacOSXVersionLT(10, 5))
176 TLI.setUnavailable(LibFunc_memset_pattern16);
177 } else if (T.isiOS()) {
178 if (T.isOSVersionLT(3, 0))
179 TLI.setUnavailable(LibFunc_memset_pattern16);
180 } else if (!T.isWatchOS()) {
181 TLI.setUnavailable(LibFunc_memset_pattern16);
182 }
183
184 if (!hasSinCosPiStret(T)) {
185 TLI.setUnavailable(LibFunc_sinpi);
186 TLI.setUnavailable(LibFunc_sinpif);
187 TLI.setUnavailable(LibFunc_cospi);
188 TLI.setUnavailable(LibFunc_cospif);
189 TLI.setUnavailable(LibFunc_sincospi_stret);
190 TLI.setUnavailable(LibFunc_sincospif_stret);
191 }
192
193 if (!hasBcmp(T))
194 TLI.setUnavailable(LibFunc_bcmp);
195
196 if (T.isMacOSX() && T.getArch() == Triple::x86 &&
197 !T.isMacOSXVersionLT(10, 7)) {
198 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
199 // we don't care about) have two versions; on recent OSX, the one we want
200 // has a $UNIX2003 suffix. The two implementations are identical except
201 // for the return value in some edge cases. However, we don't want to
202 // generate code that depends on the old symbols.
203 TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
204 TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
205 }
206
207 // iprintf and friends are only available on XCore, TCE, and Emscripten.
208 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
209 T.getOS() != Triple::Emscripten) {
210 TLI.setUnavailable(LibFunc_iprintf);
211 TLI.setUnavailable(LibFunc_siprintf);
212 TLI.setUnavailable(LibFunc_fiprintf);
213 }
214
215 // __small_printf and friends are only available on Emscripten.
216 if (T.getOS() != Triple::Emscripten) {
217 TLI.setUnavailable(LibFunc_small_printf);
218 TLI.setUnavailable(LibFunc_small_sprintf);
219 TLI.setUnavailable(LibFunc_small_fprintf);
220 }
221
222 if (T.isOSWindows() && !T.isOSCygMing()) {
223 // XXX: The earliest documentation available at the moment is for VS2015/VC19:
224 // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
225 // XXX: In order to use an MSVCRT older than VC19,
226 // the specific library version must be explicit in the target triple,
227 // e.g., x86_64-pc-windows-msvc18.
228 bool hasPartialC99 = true;
229 if (T.isKnownWindowsMSVCEnvironment()) {
230 unsigned Major, Minor, Micro;
231 T.getEnvironmentVersion(Major, Minor, Micro);
232 hasPartialC99 = (Major == 0 || Major >= 19);
233 }
234
235 // Latest targets support C89 math functions, in part.
236 bool isARM = (T.getArch() == Triple::aarch64 ||
237 T.getArch() == Triple::arm);
238 bool hasPartialFloat = (isARM ||
239 T.getArch() == Triple::x86_64);
240
241 // Win32 does not support float C89 math functions, in general.
242 if (!hasPartialFloat) {
243 TLI.setUnavailable(LibFunc_acosf);
244 TLI.setUnavailable(LibFunc_asinf);
245 TLI.setUnavailable(LibFunc_atan2f);
246 TLI.setUnavailable(LibFunc_atanf);
247 TLI.setUnavailable(LibFunc_ceilf);
248 TLI.setUnavailable(LibFunc_cosf);
249 TLI.setUnavailable(LibFunc_coshf);
250 TLI.setUnavailable(LibFunc_expf);
251 TLI.setUnavailable(LibFunc_floorf);
252 TLI.setUnavailable(LibFunc_fmodf);
253 TLI.setUnavailable(LibFunc_log10f);
254 TLI.setUnavailable(LibFunc_logf);
255 TLI.setUnavailable(LibFunc_modff);
256 TLI.setUnavailable(LibFunc_powf);
257 TLI.setUnavailable(LibFunc_remainderf);
258 TLI.setUnavailable(LibFunc_sinf);
259 TLI.setUnavailable(LibFunc_sinhf);
260 TLI.setUnavailable(LibFunc_sqrtf);
261 TLI.setUnavailable(LibFunc_tanf);
262 TLI.setUnavailable(LibFunc_tanhf);
263 }
264 if (!isARM)
265 TLI.setUnavailable(LibFunc_fabsf);
266 TLI.setUnavailable(LibFunc_frexpf);
267 TLI.setUnavailable(LibFunc_ldexpf);
268
269 // Win32 does not support long double C89 math functions.
270 TLI.setUnavailable(LibFunc_acosl);
271 TLI.setUnavailable(LibFunc_asinl);
272 TLI.setUnavailable(LibFunc_atan2l);
273 TLI.setUnavailable(LibFunc_atanl);
274 TLI.setUnavailable(LibFunc_ceill);
275 TLI.setUnavailable(LibFunc_cosl);
276 TLI.setUnavailable(LibFunc_coshl);
277 TLI.setUnavailable(LibFunc_expl);
278 TLI.setUnavailable(LibFunc_fabsl);
279 TLI.setUnavailable(LibFunc_floorl);
280 TLI.setUnavailable(LibFunc_fmodl);
281 TLI.setUnavailable(LibFunc_frexpl);
282 TLI.setUnavailable(LibFunc_ldexpl);
283 TLI.setUnavailable(LibFunc_log10l);
284 TLI.setUnavailable(LibFunc_logl);
285 TLI.setUnavailable(LibFunc_modfl);
286 TLI.setUnavailable(LibFunc_powl);
287 TLI.setUnavailable(LibFunc_remainderl);
288 TLI.setUnavailable(LibFunc_sinl);
289 TLI.setUnavailable(LibFunc_sinhl);
290 TLI.setUnavailable(LibFunc_sqrtl);
291 TLI.setUnavailable(LibFunc_tanl);
292 TLI.setUnavailable(LibFunc_tanhl);
293
294 // Win32 does not fully support C99 math functions.
295 if (!hasPartialC99) {
296 TLI.setUnavailable(LibFunc_acosh);
297 TLI.setUnavailable(LibFunc_acoshf);
298 TLI.setUnavailable(LibFunc_asinh);
299 TLI.setUnavailable(LibFunc_asinhf);
300 TLI.setUnavailable(LibFunc_atanh);
301 TLI.setUnavailable(LibFunc_atanhf);
302 TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
303 TLI.setUnavailable(LibFunc_cabsf);
304 TLI.setUnavailable(LibFunc_cbrt);
305 TLI.setUnavailable(LibFunc_cbrtf);
306 TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
307 TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
308 TLI.setUnavailable(LibFunc_exp2);
309 TLI.setUnavailable(LibFunc_exp2f);
310 TLI.setUnavailable(LibFunc_expm1);
311 TLI.setUnavailable(LibFunc_expm1f);
312 TLI.setUnavailable(LibFunc_fmax);
313 TLI.setUnavailable(LibFunc_fmaxf);
314 TLI.setUnavailable(LibFunc_fmin);
315 TLI.setUnavailable(LibFunc_fminf);
316 TLI.setUnavailable(LibFunc_log1p);
317 TLI.setUnavailable(LibFunc_log1pf);
318 TLI.setUnavailable(LibFunc_log2);
319 TLI.setUnavailable(LibFunc_log2f);
320 TLI.setAvailableWithName(LibFunc_logb, "_logb");
321 if (hasPartialFloat)
322 TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
323 else
324 TLI.setUnavailable(LibFunc_logbf);
325 TLI.setUnavailable(LibFunc_rint);
326 TLI.setUnavailable(LibFunc_rintf);
327 TLI.setUnavailable(LibFunc_round);
328 TLI.setUnavailable(LibFunc_roundf);
329 TLI.setUnavailable(LibFunc_trunc);
330 TLI.setUnavailable(LibFunc_truncf);
331 }
332
333 // Win32 does not support long double C99 math functions.
334 TLI.setUnavailable(LibFunc_acoshl);
335 TLI.setUnavailable(LibFunc_asinhl);
336 TLI.setUnavailable(LibFunc_atanhl);
337 TLI.setUnavailable(LibFunc_cabsl);
338 TLI.setUnavailable(LibFunc_cbrtl);
339 TLI.setUnavailable(LibFunc_copysignl);
340 TLI.setUnavailable(LibFunc_exp2l);
341 TLI.setUnavailable(LibFunc_expm1l);
342 TLI.setUnavailable(LibFunc_fmaxl);
343 TLI.setUnavailable(LibFunc_fminl);
344 TLI.setUnavailable(LibFunc_log1pl);
345 TLI.setUnavailable(LibFunc_log2l);
346 TLI.setUnavailable(LibFunc_logbl);
347 TLI.setUnavailable(LibFunc_nearbyintl);
348 TLI.setUnavailable(LibFunc_rintl);
349 TLI.setUnavailable(LibFunc_roundl);
350 TLI.setUnavailable(LibFunc_truncl);
351
352 // Win32 does not support these functions, but
353 // they are generally available on POSIX-compliant systems.
354 TLI.setUnavailable(LibFunc_access);
355 TLI.setUnavailable(LibFunc_chmod);
356 TLI.setUnavailable(LibFunc_closedir);
357 TLI.setUnavailable(LibFunc_fdopen);
358 TLI.setUnavailable(LibFunc_fileno);
359 TLI.setUnavailable(LibFunc_fseeko);
360 TLI.setUnavailable(LibFunc_fstat);
361 TLI.setUnavailable(LibFunc_ftello);
362 TLI.setUnavailable(LibFunc_gettimeofday);
363 TLI.setUnavailable(LibFunc_memccpy);
364 TLI.setUnavailable(LibFunc_mkdir);
365 TLI.setUnavailable(LibFunc_open);
366 TLI.setUnavailable(LibFunc_opendir);
367 TLI.setUnavailable(LibFunc_pclose);
368 TLI.setUnavailable(LibFunc_popen);
369 TLI.setUnavailable(LibFunc_read);
370 TLI.setUnavailable(LibFunc_rmdir);
371 TLI.setUnavailable(LibFunc_stat);
372 TLI.setUnavailable(LibFunc_strcasecmp);
373 TLI.setUnavailable(LibFunc_strncasecmp);
374 TLI.setUnavailable(LibFunc_unlink);
375 TLI.setUnavailable(LibFunc_utime);
376 TLI.setUnavailable(LibFunc_write);
377 }
378
379 if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) {
380 // These functions aren't available in either MSVC or MinGW environments.
381 TLI.setUnavailable(LibFunc_bcmp);
382 TLI.setUnavailable(LibFunc_bcopy);
383 TLI.setUnavailable(LibFunc_bzero);
384 TLI.setUnavailable(LibFunc_chown);
385 TLI.setUnavailable(LibFunc_ctermid);
386 TLI.setUnavailable(LibFunc_ffs);
387 TLI.setUnavailable(LibFunc_flockfile);
388 TLI.setUnavailable(LibFunc_fstatvfs);
389 TLI.setUnavailable(LibFunc_ftrylockfile);
390 TLI.setUnavailable(LibFunc_funlockfile);
391 TLI.setUnavailable(LibFunc_getitimer);
392 TLI.setUnavailable(LibFunc_getlogin_r);
393 TLI.setUnavailable(LibFunc_getpwnam);
394 TLI.setUnavailable(LibFunc_htonl);
395 TLI.setUnavailable(LibFunc_htons);
396 TLI.setUnavailable(LibFunc_lchown);
397 TLI.setUnavailable(LibFunc_lstat);
398 TLI.setUnavailable(LibFunc_ntohl);
399 TLI.setUnavailable(LibFunc_ntohs);
400 TLI.setUnavailable(LibFunc_pread);
401 TLI.setUnavailable(LibFunc_pwrite);
402 TLI.setUnavailable(LibFunc_readlink);
403 TLI.setUnavailable(LibFunc_realpath);
404 TLI.setUnavailable(LibFunc_setitimer);
405 TLI.setUnavailable(LibFunc_statvfs);
406 TLI.setUnavailable(LibFunc_stpcpy);
407 TLI.setUnavailable(LibFunc_stpncpy);
408 TLI.setUnavailable(LibFunc_times);
409 TLI.setUnavailable(LibFunc_uname);
410 TLI.setUnavailable(LibFunc_unsetenv);
411 TLI.setUnavailable(LibFunc_utimes);
412 }
413
414 switch (T.getOS()) {
415 case Triple::MacOSX:
416 // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
417 // and their names are __exp10 and __exp10f. exp10l is not available on
418 // OS X or iOS.
419 TLI.setUnavailable(LibFunc_exp10l);
420 if (T.isMacOSXVersionLT(10, 9)) {
421 TLI.setUnavailable(LibFunc_exp10);
422 TLI.setUnavailable(LibFunc_exp10f);
423 } else {
424 TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
425 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
426 }
427 break;
428 case Triple::IOS:
429 case Triple::TvOS:
430 case Triple::WatchOS:
431 TLI.setUnavailable(LibFunc_exp10l);
432 if (!T.isWatchOS() &&
433 (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
434 TLI.setUnavailable(LibFunc_exp10);
435 TLI.setUnavailable(LibFunc_exp10f);
436 } else {
437 TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
438 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
439 }
440 break;
441 case Triple::Linux:
442 // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
443 // buggy prior to glibc version 2.18. Until this version is widely deployed
444 // or we have a reasonable detection strategy, we cannot use exp10 reliably
445 // on Linux.
446 //
447 // Fall through to disable all of them.
448 LLVM_FALLTHROUGH;
449 default:
450 TLI.setUnavailable(LibFunc_exp10);
451 TLI.setUnavailable(LibFunc_exp10f);
452 TLI.setUnavailable(LibFunc_exp10l);
453 }
454
455 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
456 // Linux (GLIBC):
457 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
458 // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
459 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
460 switch (T.getOS()) {
461 case Triple::Darwin:
462 case Triple::MacOSX:
463 case Triple::IOS:
464 case Triple::TvOS:
465 case Triple::WatchOS:
466 case Triple::FreeBSD:
467 case Triple::Linux:
468 break;
469 default:
470 TLI.setUnavailable(LibFunc_ffsl);
471 }
472
473 // ffsll is available on at least FreeBSD and Linux (GLIBC):
474 // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
475 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
476 switch (T.getOS()) {
477 case Triple::Darwin:
478 case Triple::MacOSX:
479 case Triple::IOS:
480 case Triple::TvOS:
481 case Triple::WatchOS:
482 case Triple::FreeBSD:
483 case Triple::Linux:
484 break;
485 default:
486 TLI.setUnavailable(LibFunc_ffsll);
487 }
488
489 // The following functions are available on at least FreeBSD:
490 // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
491 // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
492 // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
493 if (!T.isOSFreeBSD()) {
494 TLI.setUnavailable(LibFunc_fls);
495 TLI.setUnavailable(LibFunc_flsl);
496 TLI.setUnavailable(LibFunc_flsll);
497 }
498
499 // The following functions are only available on GNU/Linux (using glibc).
500 // Linux variants without glibc (eg: bionic, musl) may have some subset.
501 if (!T.isOSLinux() || !T.isGNUEnvironment()) {
502 TLI.setUnavailable(LibFunc_dunder_strdup);
503 TLI.setUnavailable(LibFunc_dunder_strtok_r);
504 TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
505 TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
506 TLI.setUnavailable(LibFunc_under_IO_getc);
507 TLI.setUnavailable(LibFunc_under_IO_putc);
508 // But, Android and musl have memalign.
509 if (!T.isAndroid() && !T.isMusl())
510 TLI.setUnavailable(LibFunc_memalign);
511 TLI.setUnavailable(LibFunc_fopen64);
512 TLI.setUnavailable(LibFunc_fseeko64);
513 TLI.setUnavailable(LibFunc_fstat64);
514 TLI.setUnavailable(LibFunc_fstatvfs64);
515 TLI.setUnavailable(LibFunc_ftello64);
516 TLI.setUnavailable(LibFunc_lstat64);
517 TLI.setUnavailable(LibFunc_open64);
518 TLI.setUnavailable(LibFunc_stat64);
519 TLI.setUnavailable(LibFunc_statvfs64);
520 TLI.setUnavailable(LibFunc_tmpfile64);
521
522 // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
523 // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
524 // so we keep these functions around just so that they're recognized by
525 // the ConstantFolder.
526 TLI.setUnavailable(LibFunc_acos_finite);
527 TLI.setUnavailable(LibFunc_acosf_finite);
528 TLI.setUnavailable(LibFunc_acosl_finite);
529 TLI.setUnavailable(LibFunc_acosh_finite);
530 TLI.setUnavailable(LibFunc_acoshf_finite);
531 TLI.setUnavailable(LibFunc_acoshl_finite);
532 TLI.setUnavailable(LibFunc_asin_finite);
533 TLI.setUnavailable(LibFunc_asinf_finite);
534 TLI.setUnavailable(LibFunc_asinl_finite);
535 TLI.setUnavailable(LibFunc_atan2_finite);
536 TLI.setUnavailable(LibFunc_atan2f_finite);
537 TLI.setUnavailable(LibFunc_atan2l_finite);
538 TLI.setUnavailable(LibFunc_atanh_finite);
539 TLI.setUnavailable(LibFunc_atanhf_finite);
540 TLI.setUnavailable(LibFunc_atanhl_finite);
541 TLI.setUnavailable(LibFunc_cosh_finite);
542 TLI.setUnavailable(LibFunc_coshf_finite);
543 TLI.setUnavailable(LibFunc_coshl_finite);
544 TLI.setUnavailable(LibFunc_exp10_finite);
545 TLI.setUnavailable(LibFunc_exp10f_finite);
546 TLI.setUnavailable(LibFunc_exp10l_finite);
547 TLI.setUnavailable(LibFunc_exp2_finite);
548 TLI.setUnavailable(LibFunc_exp2f_finite);
549 TLI.setUnavailable(LibFunc_exp2l_finite);
550 TLI.setUnavailable(LibFunc_exp_finite);
551 TLI.setUnavailable(LibFunc_expf_finite);
552 TLI.setUnavailable(LibFunc_expl_finite);
553 TLI.setUnavailable(LibFunc_log10_finite);
554 TLI.setUnavailable(LibFunc_log10f_finite);
555 TLI.setUnavailable(LibFunc_log10l_finite);
556 TLI.setUnavailable(LibFunc_log2_finite);
557 TLI.setUnavailable(LibFunc_log2f_finite);
558 TLI.setUnavailable(LibFunc_log2l_finite);
559 TLI.setUnavailable(LibFunc_log_finite);
560 TLI.setUnavailable(LibFunc_logf_finite);
561 TLI.setUnavailable(LibFunc_logl_finite);
562 TLI.setUnavailable(LibFunc_pow_finite);
563 TLI.setUnavailable(LibFunc_powf_finite);
564 TLI.setUnavailable(LibFunc_powl_finite);
565 TLI.setUnavailable(LibFunc_sinh_finite);
566 TLI.setUnavailable(LibFunc_sinhf_finite);
567 TLI.setUnavailable(LibFunc_sinhl_finite);
568 }
569
570 if ((T.isOSLinux() && T.isGNUEnvironment()) ||
571 (T.isAndroid() && !T.isAndroidVersionLT(28))) {
572 // available IO unlocked variants on GNU/Linux and Android P or later
573 TLI.setAvailable(LibFunc_getc_unlocked);
574 TLI.setAvailable(LibFunc_getchar_unlocked);
575 TLI.setAvailable(LibFunc_putc_unlocked);
576 TLI.setAvailable(LibFunc_putchar_unlocked);
577 TLI.setAvailable(LibFunc_fputc_unlocked);
578 TLI.setAvailable(LibFunc_fgetc_unlocked);
579 TLI.setAvailable(LibFunc_fread_unlocked);
580 TLI.setAvailable(LibFunc_fwrite_unlocked);
581 TLI.setAvailable(LibFunc_fputs_unlocked);
582 TLI.setAvailable(LibFunc_fgets_unlocked);
583 }
584
585 // As currently implemented in clang, NVPTX code has no standard library to
586 // speak of. Headers provide a standard-ish library implementation, but many
587 // of the signatures are wrong -- for example, many libm functions are not
588 // extern "C".
589 //
590 // libdevice, an IR library provided by nvidia, is linked in by the front-end,
591 // but only used functions are provided to llvm. Moreover, most of the
592 // functions in libdevice don't map precisely to standard library functions.
593 //
594 // FIXME: Having no standard library prevents e.g. many fastmath
595 // optimizations, so this situation should be fixed.
596 if (T.isNVPTX()) {
597 TLI.disableAllFunctions();
598 TLI.setAvailable(LibFunc_nvvm_reflect);
599 TLI.setAvailable(llvm::LibFunc_malloc);
600 TLI.setAvailable(llvm::LibFunc_free);
601
602 // TODO: We could enable the following two according to [0] but we haven't
603 // done an evaluation wrt. the performance implications.
604 // [0]
605 // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations
606 //
607 // TLI.setAvailable(llvm::LibFunc_memcpy);
608 // TLI.setAvailable(llvm::LibFunc_memset);
609
610 } else {
611 TLI.setUnavailable(LibFunc_nvvm_reflect);
612 }
613
614 // These vec_malloc/free routines are only available on AIX.
615 if (!T.isOSAIX()) {
616 TLI.setUnavailable(LibFunc_vec_calloc);
617 TLI.setUnavailable(LibFunc_vec_malloc);
618 TLI.setUnavailable(LibFunc_vec_realloc);
619 TLI.setUnavailable(LibFunc_vec_free);
620 }
621
622 TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
623 }
624
TargetLibraryInfoImpl()625 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
626 // Default to everything being available.
627 memset(AvailableArray, -1, sizeof(AvailableArray));
628
629 initialize(*this, Triple(), StandardNames);
630 }
631
TargetLibraryInfoImpl(const Triple & T)632 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
633 // Default to everything being available.
634 memset(AvailableArray, -1, sizeof(AvailableArray));
635
636 initialize(*this, T, StandardNames);
637 }
638
TargetLibraryInfoImpl(const TargetLibraryInfoImpl & TLI)639 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
640 : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
641 ShouldExtI32Return(TLI.ShouldExtI32Return),
642 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
643 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
644 VectorDescs = TLI.VectorDescs;
645 ScalarDescs = TLI.ScalarDescs;
646 }
647
TargetLibraryInfoImpl(TargetLibraryInfoImpl && TLI)648 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
649 : CustomNames(std::move(TLI.CustomNames)),
650 ShouldExtI32Param(TLI.ShouldExtI32Param),
651 ShouldExtI32Return(TLI.ShouldExtI32Return),
652 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
653 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
654 AvailableArray);
655 VectorDescs = TLI.VectorDescs;
656 ScalarDescs = TLI.ScalarDescs;
657 }
658
operator =(const TargetLibraryInfoImpl & TLI)659 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
660 CustomNames = TLI.CustomNames;
661 ShouldExtI32Param = TLI.ShouldExtI32Param;
662 ShouldExtI32Return = TLI.ShouldExtI32Return;
663 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
664 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
665 return *this;
666 }
667
operator =(TargetLibraryInfoImpl && TLI)668 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
669 CustomNames = std::move(TLI.CustomNames);
670 ShouldExtI32Param = TLI.ShouldExtI32Param;
671 ShouldExtI32Return = TLI.ShouldExtI32Return;
672 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
673 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
674 AvailableArray);
675 return *this;
676 }
677
sanitizeFunctionName(StringRef funcName)678 static StringRef sanitizeFunctionName(StringRef funcName) {
679 // Filter out empty names and names containing null bytes, those can't be in
680 // our table.
681 if (funcName.empty() || funcName.find('\0') != StringRef::npos)
682 return StringRef();
683
684 // Check for \01 prefix that is used to mangle __asm declarations and
685 // strip it if present.
686 return GlobalValue::dropLLVMManglingEscape(funcName);
687 }
688
getLibFunc(StringRef funcName,LibFunc & F) const689 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
690 funcName = sanitizeFunctionName(funcName);
691 if (funcName.empty())
692 return false;
693
694 const auto *Start = std::begin(StandardNames);
695 const auto *End = std::end(StandardNames);
696 const auto *I = std::lower_bound(Start, End, funcName);
697 if (I != End && *I == funcName) {
698 F = (LibFunc)(I - Start);
699 return true;
700 }
701 return false;
702 }
703
isValidProtoForLibFunc(const FunctionType & FTy,LibFunc F,const DataLayout * DL) const704 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
705 LibFunc F,
706 const DataLayout *DL) const {
707 LLVMContext &Ctx = FTy.getContext();
708 Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AddressSpace=*/0) : nullptr;
709 auto IsSizeTTy = [SizeTTy](Type *Ty) {
710 return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
711 };
712 unsigned NumParams = FTy.getNumParams();
713
714 switch (F) {
715 case LibFunc_execl:
716 case LibFunc_execlp:
717 case LibFunc_execle:
718 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
719 FTy.getParamType(1)->isPointerTy() &&
720 FTy.getReturnType()->isIntegerTy(32));
721 case LibFunc_execv:
722 case LibFunc_execvp:
723 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
724 FTy.getParamType(1)->isPointerTy() &&
725 FTy.getReturnType()->isIntegerTy(32));
726 case LibFunc_execvP:
727 case LibFunc_execvpe:
728 case LibFunc_execve:
729 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
730 FTy.getParamType(1)->isPointerTy() &&
731 FTy.getParamType(2)->isPointerTy() &&
732 FTy.getReturnType()->isIntegerTy(32));
733 case LibFunc_strlen_chk:
734 --NumParams;
735 if (!IsSizeTTy(FTy.getParamType(NumParams)))
736 return false;
737 LLVM_FALLTHROUGH;
738 case LibFunc_strlen:
739 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
740 FTy.getReturnType()->isIntegerTy());
741
742 case LibFunc_strchr:
743 case LibFunc_strrchr:
744 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
745 FTy.getParamType(0) == FTy.getReturnType() &&
746 FTy.getParamType(1)->isIntegerTy());
747
748 case LibFunc_strtol:
749 case LibFunc_strtod:
750 case LibFunc_strtof:
751 case LibFunc_strtoul:
752 case LibFunc_strtoll:
753 case LibFunc_strtold:
754 case LibFunc_strtoull:
755 return ((NumParams == 2 || NumParams == 3) &&
756 FTy.getParamType(0)->isPointerTy() &&
757 FTy.getParamType(1)->isPointerTy());
758 case LibFunc_strcat_chk:
759 --NumParams;
760 if (!IsSizeTTy(FTy.getParamType(NumParams)))
761 return false;
762 LLVM_FALLTHROUGH;
763 case LibFunc_strcat:
764 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
765 FTy.getParamType(0) == FTy.getReturnType() &&
766 FTy.getParamType(1) == FTy.getReturnType());
767
768 case LibFunc_strncat_chk:
769 --NumParams;
770 if (!IsSizeTTy(FTy.getParamType(NumParams)))
771 return false;
772 LLVM_FALLTHROUGH;
773 case LibFunc_strncat:
774 return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
775 FTy.getParamType(0) == FTy.getReturnType() &&
776 FTy.getParamType(1) == FTy.getReturnType() &&
777 IsSizeTTy(FTy.getParamType(2)));
778
779 case LibFunc_strcpy_chk:
780 case LibFunc_stpcpy_chk:
781 --NumParams;
782 if (!IsSizeTTy(FTy.getParamType(NumParams)))
783 return false;
784 LLVM_FALLTHROUGH;
785 case LibFunc_strcpy:
786 case LibFunc_stpcpy:
787 return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
788 FTy.getParamType(0) == FTy.getParamType(1) &&
789 FTy.getParamType(0)->isPointerTy());
790
791 case LibFunc_strlcat_chk:
792 case LibFunc_strlcpy_chk:
793 --NumParams;
794 if (!IsSizeTTy(FTy.getParamType(NumParams)))
795 return false;
796 LLVM_FALLTHROUGH;
797 case LibFunc_strlcat:
798 case LibFunc_strlcpy:
799 return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
800 FTy.getParamType(0)->isPointerTy() &&
801 FTy.getParamType(1)->isPointerTy() &&
802 IsSizeTTy(FTy.getParamType(2));
803
804 case LibFunc_strncpy_chk:
805 case LibFunc_stpncpy_chk:
806 --NumParams;
807 if (!IsSizeTTy(FTy.getParamType(NumParams)))
808 return false;
809 LLVM_FALLTHROUGH;
810 case LibFunc_strncpy:
811 case LibFunc_stpncpy:
812 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
813 FTy.getParamType(0) == FTy.getParamType(1) &&
814 FTy.getParamType(0)->isPointerTy() &&
815 IsSizeTTy(FTy.getParamType(2)));
816
817 case LibFunc_strxfrm:
818 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
819 FTy.getParamType(1)->isPointerTy());
820
821 case LibFunc_strcmp:
822 return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
823 FTy.getParamType(0)->isPointerTy() &&
824 FTy.getParamType(0) == FTy.getParamType(1));
825
826 case LibFunc_strncmp:
827 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
828 FTy.getParamType(0)->isPointerTy() &&
829 FTy.getParamType(0) == FTy.getParamType(1) &&
830 IsSizeTTy(FTy.getParamType(2)));
831
832 case LibFunc_strspn:
833 case LibFunc_strcspn:
834 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
835 FTy.getParamType(0) == FTy.getParamType(1) &&
836 FTy.getReturnType()->isIntegerTy());
837
838 case LibFunc_strcoll:
839 case LibFunc_strcasecmp:
840 case LibFunc_strncasecmp:
841 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
842 FTy.getParamType(1)->isPointerTy());
843
844 case LibFunc_strstr:
845 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
846 FTy.getParamType(0)->isPointerTy() &&
847 FTy.getParamType(1)->isPointerTy());
848
849 case LibFunc_strpbrk:
850 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
851 FTy.getReturnType() == FTy.getParamType(0) &&
852 FTy.getParamType(0) == FTy.getParamType(1));
853
854 case LibFunc_strtok:
855 case LibFunc_strtok_r:
856 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
857 case LibFunc_scanf:
858 case LibFunc_setbuf:
859 case LibFunc_setvbuf:
860 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
861 case LibFunc_strdup:
862 case LibFunc_strndup:
863 return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
864 FTy.getParamType(0)->isPointerTy());
865 case LibFunc_sscanf:
866 case LibFunc_stat:
867 case LibFunc_statvfs:
868 case LibFunc_siprintf:
869 case LibFunc_small_sprintf:
870 case LibFunc_sprintf:
871 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
872 FTy.getParamType(1)->isPointerTy() &&
873 FTy.getReturnType()->isIntegerTy(32));
874
875 case LibFunc_sprintf_chk:
876 return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
877 FTy.getParamType(1)->isIntegerTy(32) &&
878 IsSizeTTy(FTy.getParamType(2)) &&
879 FTy.getParamType(3)->isPointerTy() &&
880 FTy.getReturnType()->isIntegerTy(32);
881
882 case LibFunc_snprintf:
883 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
884 FTy.getParamType(2)->isPointerTy() &&
885 FTy.getReturnType()->isIntegerTy(32));
886
887 case LibFunc_snprintf_chk:
888 return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
889 IsSizeTTy(FTy.getParamType(1)) &&
890 FTy.getParamType(2)->isIntegerTy(32) &&
891 IsSizeTTy(FTy.getParamType(3)) &&
892 FTy.getParamType(4)->isPointerTy() &&
893 FTy.getReturnType()->isIntegerTy(32);
894
895 case LibFunc_setitimer:
896 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
897 FTy.getParamType(2)->isPointerTy());
898 case LibFunc_system:
899 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
900 case LibFunc_malloc:
901 case LibFunc_vec_malloc:
902 return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
903 case LibFunc_memcmp:
904 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
905 FTy.getParamType(0)->isPointerTy() &&
906 FTy.getParamType(1)->isPointerTy());
907
908 case LibFunc_memchr:
909 case LibFunc_memrchr:
910 return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
911 FTy.getReturnType() == FTy.getParamType(0) &&
912 FTy.getParamType(1)->isIntegerTy(32) &&
913 IsSizeTTy(FTy.getParamType(2)));
914 case LibFunc_modf:
915 case LibFunc_modff:
916 case LibFunc_modfl:
917 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
918
919 case LibFunc_memcpy_chk:
920 case LibFunc_mempcpy_chk:
921 case LibFunc_memmove_chk:
922 --NumParams;
923 if (!IsSizeTTy(FTy.getParamType(NumParams)))
924 return false;
925 LLVM_FALLTHROUGH;
926 case LibFunc_memcpy:
927 case LibFunc_mempcpy:
928 case LibFunc_memmove:
929 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
930 FTy.getParamType(0)->isPointerTy() &&
931 FTy.getParamType(1)->isPointerTy() &&
932 IsSizeTTy(FTy.getParamType(2)));
933
934 case LibFunc_memset_chk:
935 --NumParams;
936 if (!IsSizeTTy(FTy.getParamType(NumParams)))
937 return false;
938 LLVM_FALLTHROUGH;
939 case LibFunc_memset:
940 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
941 FTy.getParamType(0)->isPointerTy() &&
942 FTy.getParamType(1)->isIntegerTy() &&
943 IsSizeTTy(FTy.getParamType(2)));
944
945 case LibFunc_memccpy_chk:
946 --NumParams;
947 if (!IsSizeTTy(FTy.getParamType(NumParams)))
948 return false;
949 LLVM_FALLTHROUGH;
950 case LibFunc_memccpy:
951 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
952 case LibFunc_memalign:
953 return (FTy.getReturnType()->isPointerTy());
954 case LibFunc_realloc:
955 case LibFunc_reallocf:
956 case LibFunc_vec_realloc:
957 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
958 FTy.getParamType(0) == FTy.getReturnType() &&
959 IsSizeTTy(FTy.getParamType(1)));
960 case LibFunc_read:
961 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
962 case LibFunc_rewind:
963 case LibFunc_rmdir:
964 case LibFunc_remove:
965 case LibFunc_realpath:
966 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
967 case LibFunc_rename:
968 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
969 FTy.getParamType(1)->isPointerTy());
970 case LibFunc_readlink:
971 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
972 FTy.getParamType(1)->isPointerTy());
973 case LibFunc_write:
974 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
975 case LibFunc_aligned_alloc:
976 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
977 case LibFunc_bcopy:
978 case LibFunc_bcmp:
979 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
980 FTy.getParamType(1)->isPointerTy());
981 case LibFunc_bzero:
982 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
983 case LibFunc_calloc:
984 case LibFunc_vec_calloc:
985 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
986
987 case LibFunc_atof:
988 case LibFunc_atoi:
989 case LibFunc_atol:
990 case LibFunc_atoll:
991 case LibFunc_ferror:
992 case LibFunc_getenv:
993 case LibFunc_getpwnam:
994 case LibFunc_iprintf:
995 case LibFunc_small_printf:
996 case LibFunc_pclose:
997 case LibFunc_perror:
998 case LibFunc_printf:
999 case LibFunc_puts:
1000 case LibFunc_uname:
1001 case LibFunc_under_IO_getc:
1002 case LibFunc_unlink:
1003 case LibFunc_unsetenv:
1004 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1005
1006 case LibFunc_access:
1007 case LibFunc_chmod:
1008 case LibFunc_chown:
1009 case LibFunc_clearerr:
1010 case LibFunc_closedir:
1011 case LibFunc_ctermid:
1012 case LibFunc_fclose:
1013 case LibFunc_feof:
1014 case LibFunc_fflush:
1015 case LibFunc_fgetc:
1016 case LibFunc_fgetc_unlocked:
1017 case LibFunc_fileno:
1018 case LibFunc_flockfile:
1019 case LibFunc_free:
1020 case LibFunc_fseek:
1021 case LibFunc_fseeko64:
1022 case LibFunc_fseeko:
1023 case LibFunc_fsetpos:
1024 case LibFunc_ftell:
1025 case LibFunc_ftello64:
1026 case LibFunc_ftello:
1027 case LibFunc_ftrylockfile:
1028 case LibFunc_funlockfile:
1029 case LibFunc_getc:
1030 case LibFunc_getc_unlocked:
1031 case LibFunc_getlogin_r:
1032 case LibFunc_mkdir:
1033 case LibFunc_mktime:
1034 case LibFunc_times:
1035 case LibFunc_vec_free:
1036 return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
1037
1038 case LibFunc_fopen:
1039 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1040 FTy.getParamType(0)->isPointerTy() &&
1041 FTy.getParamType(1)->isPointerTy());
1042 case LibFunc_fork:
1043 return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
1044 case LibFunc_fdopen:
1045 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1046 FTy.getParamType(1)->isPointerTy());
1047 case LibFunc_fputc:
1048 case LibFunc_fputc_unlocked:
1049 case LibFunc_fstat:
1050 case LibFunc_frexp:
1051 case LibFunc_frexpf:
1052 case LibFunc_frexpl:
1053 case LibFunc_fstatvfs:
1054 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1055 case LibFunc_fgets:
1056 case LibFunc_fgets_unlocked:
1057 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1058 FTy.getParamType(2)->isPointerTy());
1059 case LibFunc_fread:
1060 case LibFunc_fread_unlocked:
1061 return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1062 FTy.getParamType(3)->isPointerTy());
1063 case LibFunc_fwrite:
1064 case LibFunc_fwrite_unlocked:
1065 return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
1066 FTy.getParamType(0)->isPointerTy() &&
1067 FTy.getParamType(1)->isIntegerTy() &&
1068 FTy.getParamType(2)->isIntegerTy() &&
1069 FTy.getParamType(3)->isPointerTy());
1070 case LibFunc_fputs:
1071 case LibFunc_fputs_unlocked:
1072 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1073 FTy.getParamType(1)->isPointerTy());
1074 case LibFunc_fscanf:
1075 case LibFunc_fiprintf:
1076 case LibFunc_small_fprintf:
1077 case LibFunc_fprintf:
1078 return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
1079 FTy.getParamType(0)->isPointerTy() &&
1080 FTy.getParamType(1)->isPointerTy());
1081 case LibFunc_fgetpos:
1082 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1083 FTy.getParamType(1)->isPointerTy());
1084 case LibFunc_getchar:
1085 case LibFunc_getchar_unlocked:
1086 return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1087 case LibFunc_gets:
1088 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1089 case LibFunc_getitimer:
1090 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1091 case LibFunc_ungetc:
1092 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1093 case LibFunc_utime:
1094 case LibFunc_utimes:
1095 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1096 FTy.getParamType(1)->isPointerTy());
1097 case LibFunc_putc:
1098 case LibFunc_putc_unlocked:
1099 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1100 case LibFunc_pread:
1101 case LibFunc_pwrite:
1102 return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1103 case LibFunc_popen:
1104 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1105 FTy.getParamType(0)->isPointerTy() &&
1106 FTy.getParamType(1)->isPointerTy());
1107 case LibFunc_vscanf:
1108 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1109 case LibFunc_vsscanf:
1110 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1111 FTy.getParamType(2)->isPointerTy());
1112 case LibFunc_vfscanf:
1113 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1114 FTy.getParamType(2)->isPointerTy());
1115 case LibFunc_valloc:
1116 return (FTy.getReturnType()->isPointerTy());
1117 case LibFunc_vprintf:
1118 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1119 case LibFunc_vfprintf:
1120 case LibFunc_vsprintf:
1121 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1122 FTy.getParamType(1)->isPointerTy());
1123 case LibFunc_vsprintf_chk:
1124 return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1125 FTy.getParamType(1)->isIntegerTy(32) &&
1126 IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1127 case LibFunc_vsnprintf:
1128 return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1129 FTy.getParamType(2)->isPointerTy());
1130 case LibFunc_vsnprintf_chk:
1131 return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1132 FTy.getParamType(2)->isIntegerTy(32) &&
1133 IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1134 case LibFunc_open:
1135 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1136 case LibFunc_opendir:
1137 return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1138 FTy.getParamType(0)->isPointerTy());
1139 case LibFunc_tmpfile:
1140 return (FTy.getReturnType()->isPointerTy());
1141 case LibFunc_htonl:
1142 case LibFunc_ntohl:
1143 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1144 FTy.getReturnType() == FTy.getParamType(0));
1145 case LibFunc_htons:
1146 case LibFunc_ntohs:
1147 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1148 FTy.getReturnType() == FTy.getParamType(0));
1149 case LibFunc_lstat:
1150 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1151 FTy.getParamType(1)->isPointerTy());
1152 case LibFunc_lchown:
1153 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1154 case LibFunc_qsort:
1155 return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1156 case LibFunc_dunder_strdup:
1157 case LibFunc_dunder_strndup:
1158 return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1159 FTy.getParamType(0)->isPointerTy());
1160 case LibFunc_dunder_strtok_r:
1161 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1162 case LibFunc_under_IO_putc:
1163 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1164 case LibFunc_dunder_isoc99_scanf:
1165 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1166 case LibFunc_stat64:
1167 case LibFunc_lstat64:
1168 case LibFunc_statvfs64:
1169 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1170 FTy.getParamType(1)->isPointerTy());
1171 case LibFunc_dunder_isoc99_sscanf:
1172 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1173 FTy.getParamType(1)->isPointerTy());
1174 case LibFunc_fopen64:
1175 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1176 FTy.getParamType(0)->isPointerTy() &&
1177 FTy.getParamType(1)->isPointerTy());
1178 case LibFunc_tmpfile64:
1179 return (FTy.getReturnType()->isPointerTy());
1180 case LibFunc_fstat64:
1181 case LibFunc_fstatvfs64:
1182 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1183 case LibFunc_open64:
1184 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1185 case LibFunc_gettimeofday:
1186 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1187 FTy.getParamType(1)->isPointerTy());
1188
1189 // new(unsigned int);
1190 case LibFunc_Znwj:
1191 // new(unsigned long);
1192 case LibFunc_Znwm:
1193 // new[](unsigned int);
1194 case LibFunc_Znaj:
1195 // new[](unsigned long);
1196 case LibFunc_Znam:
1197 // new(unsigned int);
1198 case LibFunc_msvc_new_int:
1199 // new(unsigned long long);
1200 case LibFunc_msvc_new_longlong:
1201 // new[](unsigned int);
1202 case LibFunc_msvc_new_array_int:
1203 // new[](unsigned long long);
1204 case LibFunc_msvc_new_array_longlong:
1205 return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1206
1207 // new(unsigned int, nothrow);
1208 case LibFunc_ZnwjRKSt9nothrow_t:
1209 // new(unsigned long, nothrow);
1210 case LibFunc_ZnwmRKSt9nothrow_t:
1211 // new[](unsigned int, nothrow);
1212 case LibFunc_ZnajRKSt9nothrow_t:
1213 // new[](unsigned long, nothrow);
1214 case LibFunc_ZnamRKSt9nothrow_t:
1215 // new(unsigned int, nothrow);
1216 case LibFunc_msvc_new_int_nothrow:
1217 // new(unsigned long long, nothrow);
1218 case LibFunc_msvc_new_longlong_nothrow:
1219 // new[](unsigned int, nothrow);
1220 case LibFunc_msvc_new_array_int_nothrow:
1221 // new[](unsigned long long, nothrow);
1222 case LibFunc_msvc_new_array_longlong_nothrow:
1223 // new(unsigned int, align_val_t)
1224 case LibFunc_ZnwjSt11align_val_t:
1225 // new(unsigned long, align_val_t)
1226 case LibFunc_ZnwmSt11align_val_t:
1227 // new[](unsigned int, align_val_t)
1228 case LibFunc_ZnajSt11align_val_t:
1229 // new[](unsigned long, align_val_t)
1230 case LibFunc_ZnamSt11align_val_t:
1231 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1232
1233 // new(unsigned int, align_val_t, nothrow)
1234 case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1235 // new(unsigned long, align_val_t, nothrow)
1236 case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1237 // new[](unsigned int, align_val_t, nothrow)
1238 case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1239 // new[](unsigned long, align_val_t, nothrow)
1240 case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1241 return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1242
1243 // void operator delete[](void*);
1244 case LibFunc_ZdaPv:
1245 // void operator delete(void*);
1246 case LibFunc_ZdlPv:
1247 // void operator delete[](void*);
1248 case LibFunc_msvc_delete_array_ptr32:
1249 // void operator delete[](void*);
1250 case LibFunc_msvc_delete_array_ptr64:
1251 // void operator delete(void*);
1252 case LibFunc_msvc_delete_ptr32:
1253 // void operator delete(void*);
1254 case LibFunc_msvc_delete_ptr64:
1255 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1256
1257 // void operator delete[](void*, nothrow);
1258 case LibFunc_ZdaPvRKSt9nothrow_t:
1259 // void operator delete[](void*, unsigned int);
1260 case LibFunc_ZdaPvj:
1261 // void operator delete[](void*, unsigned long);
1262 case LibFunc_ZdaPvm:
1263 // void operator delete(void*, nothrow);
1264 case LibFunc_ZdlPvRKSt9nothrow_t:
1265 // void operator delete(void*, unsigned int);
1266 case LibFunc_ZdlPvj:
1267 // void operator delete(void*, unsigned long);
1268 case LibFunc_ZdlPvm:
1269 // void operator delete(void*, align_val_t)
1270 case LibFunc_ZdlPvSt11align_val_t:
1271 // void operator delete[](void*, align_val_t)
1272 case LibFunc_ZdaPvSt11align_val_t:
1273 // void operator delete[](void*, unsigned int);
1274 case LibFunc_msvc_delete_array_ptr32_int:
1275 // void operator delete[](void*, nothrow);
1276 case LibFunc_msvc_delete_array_ptr32_nothrow:
1277 // void operator delete[](void*, unsigned long long);
1278 case LibFunc_msvc_delete_array_ptr64_longlong:
1279 // void operator delete[](void*, nothrow);
1280 case LibFunc_msvc_delete_array_ptr64_nothrow:
1281 // void operator delete(void*, unsigned int);
1282 case LibFunc_msvc_delete_ptr32_int:
1283 // void operator delete(void*, nothrow);
1284 case LibFunc_msvc_delete_ptr32_nothrow:
1285 // void operator delete(void*, unsigned long long);
1286 case LibFunc_msvc_delete_ptr64_longlong:
1287 // void operator delete(void*, nothrow);
1288 case LibFunc_msvc_delete_ptr64_nothrow:
1289 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1290
1291 // void operator delete(void*, align_val_t, nothrow)
1292 case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1293 // void operator delete[](void*, align_val_t, nothrow)
1294 case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1295 // void operator delete(void*, unsigned int, align_val_t)
1296 case LibFunc_ZdlPvjSt11align_val_t:
1297 // void operator delete(void*, unsigned long, align_val_t)
1298 case LibFunc_ZdlPvmSt11align_val_t:
1299 // void operator delete[](void*, unsigned int, align_val_t);
1300 case LibFunc_ZdaPvjSt11align_val_t:
1301 // void operator delete[](void*, unsigned long, align_val_t);
1302 case LibFunc_ZdaPvmSt11align_val_t:
1303 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1304
1305 // void __atomic_load(size_t, void *, void *, int)
1306 case LibFunc_atomic_load:
1307 // void __atomic_store(size_t, void *, void *, int)
1308 case LibFunc_atomic_store:
1309 return (NumParams == 4 && FTy.getParamType(0)->isIntegerTy() &&
1310 FTy.getParamType(1)->isPointerTy() &&
1311 FTy.getParamType(2)->isPointerTy() &&
1312 FTy.getParamType(3)->isIntegerTy());
1313
1314 case LibFunc_memset_pattern16:
1315 return (!FTy.isVarArg() && NumParams == 3 &&
1316 FTy.getParamType(0)->isPointerTy() &&
1317 FTy.getParamType(1)->isPointerTy() &&
1318 FTy.getParamType(2)->isIntegerTy());
1319
1320 case LibFunc_cxa_guard_abort:
1321 case LibFunc_cxa_guard_acquire:
1322 case LibFunc_cxa_guard_release:
1323 case LibFunc_nvvm_reflect:
1324 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1325
1326 case LibFunc_sincospi_stret:
1327 case LibFunc_sincospif_stret:
1328 return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1329
1330 case LibFunc_acos:
1331 case LibFunc_acos_finite:
1332 case LibFunc_acosf:
1333 case LibFunc_acosf_finite:
1334 case LibFunc_acosh:
1335 case LibFunc_acosh_finite:
1336 case LibFunc_acoshf:
1337 case LibFunc_acoshf_finite:
1338 case LibFunc_acoshl:
1339 case LibFunc_acoshl_finite:
1340 case LibFunc_acosl:
1341 case LibFunc_acosl_finite:
1342 case LibFunc_asin:
1343 case LibFunc_asin_finite:
1344 case LibFunc_asinf:
1345 case LibFunc_asinf_finite:
1346 case LibFunc_asinh:
1347 case LibFunc_asinhf:
1348 case LibFunc_asinhl:
1349 case LibFunc_asinl:
1350 case LibFunc_asinl_finite:
1351 case LibFunc_atan:
1352 case LibFunc_atanf:
1353 case LibFunc_atanh:
1354 case LibFunc_atanh_finite:
1355 case LibFunc_atanhf:
1356 case LibFunc_atanhf_finite:
1357 case LibFunc_atanhl:
1358 case LibFunc_atanhl_finite:
1359 case LibFunc_atanl:
1360 case LibFunc_cbrt:
1361 case LibFunc_cbrtf:
1362 case LibFunc_cbrtl:
1363 case LibFunc_ceil:
1364 case LibFunc_ceilf:
1365 case LibFunc_ceill:
1366 case LibFunc_cos:
1367 case LibFunc_cosf:
1368 case LibFunc_cosh:
1369 case LibFunc_cosh_finite:
1370 case LibFunc_coshf:
1371 case LibFunc_coshf_finite:
1372 case LibFunc_coshl:
1373 case LibFunc_coshl_finite:
1374 case LibFunc_cosl:
1375 case LibFunc_exp10:
1376 case LibFunc_exp10_finite:
1377 case LibFunc_exp10f:
1378 case LibFunc_exp10f_finite:
1379 case LibFunc_exp10l:
1380 case LibFunc_exp10l_finite:
1381 case LibFunc_exp2:
1382 case LibFunc_exp2_finite:
1383 case LibFunc_exp2f:
1384 case LibFunc_exp2f_finite:
1385 case LibFunc_exp2l:
1386 case LibFunc_exp2l_finite:
1387 case LibFunc_exp:
1388 case LibFunc_exp_finite:
1389 case LibFunc_expf:
1390 case LibFunc_expf_finite:
1391 case LibFunc_expl:
1392 case LibFunc_expl_finite:
1393 case LibFunc_expm1:
1394 case LibFunc_expm1f:
1395 case LibFunc_expm1l:
1396 case LibFunc_fabs:
1397 case LibFunc_fabsf:
1398 case LibFunc_fabsl:
1399 case LibFunc_floor:
1400 case LibFunc_floorf:
1401 case LibFunc_floorl:
1402 case LibFunc_log10:
1403 case LibFunc_log10_finite:
1404 case LibFunc_log10f:
1405 case LibFunc_log10f_finite:
1406 case LibFunc_log10l:
1407 case LibFunc_log10l_finite:
1408 case LibFunc_log1p:
1409 case LibFunc_log1pf:
1410 case LibFunc_log1pl:
1411 case LibFunc_log2:
1412 case LibFunc_log2_finite:
1413 case LibFunc_log2f:
1414 case LibFunc_log2f_finite:
1415 case LibFunc_log2l:
1416 case LibFunc_log2l_finite:
1417 case LibFunc_log:
1418 case LibFunc_log_finite:
1419 case LibFunc_logb:
1420 case LibFunc_logbf:
1421 case LibFunc_logbl:
1422 case LibFunc_logf:
1423 case LibFunc_logf_finite:
1424 case LibFunc_logl:
1425 case LibFunc_logl_finite:
1426 case LibFunc_nearbyint:
1427 case LibFunc_nearbyintf:
1428 case LibFunc_nearbyintl:
1429 case LibFunc_rint:
1430 case LibFunc_rintf:
1431 case LibFunc_rintl:
1432 case LibFunc_round:
1433 case LibFunc_roundf:
1434 case LibFunc_roundl:
1435 case LibFunc_roundeven:
1436 case LibFunc_roundevenf:
1437 case LibFunc_roundevenl:
1438 case LibFunc_sin:
1439 case LibFunc_sinf:
1440 case LibFunc_sinh:
1441 case LibFunc_sinh_finite:
1442 case LibFunc_sinhf:
1443 case LibFunc_sinhf_finite:
1444 case LibFunc_sinhl:
1445 case LibFunc_sinhl_finite:
1446 case LibFunc_sinl:
1447 case LibFunc_sqrt:
1448 case LibFunc_sqrt_finite:
1449 case LibFunc_sqrtf:
1450 case LibFunc_sqrtf_finite:
1451 case LibFunc_sqrtl:
1452 case LibFunc_sqrtl_finite:
1453 case LibFunc_tan:
1454 case LibFunc_tanf:
1455 case LibFunc_tanh:
1456 case LibFunc_tanhf:
1457 case LibFunc_tanhl:
1458 case LibFunc_tanl:
1459 case LibFunc_trunc:
1460 case LibFunc_truncf:
1461 case LibFunc_truncl:
1462 return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1463 FTy.getReturnType() == FTy.getParamType(0));
1464
1465 case LibFunc_atan2:
1466 case LibFunc_atan2_finite:
1467 case LibFunc_atan2f:
1468 case LibFunc_atan2f_finite:
1469 case LibFunc_atan2l:
1470 case LibFunc_atan2l_finite:
1471 case LibFunc_fmin:
1472 case LibFunc_fminf:
1473 case LibFunc_fminl:
1474 case LibFunc_fmax:
1475 case LibFunc_fmaxf:
1476 case LibFunc_fmaxl:
1477 case LibFunc_fmod:
1478 case LibFunc_fmodf:
1479 case LibFunc_fmodl:
1480 case LibFunc_remainder:
1481 case LibFunc_remainderf:
1482 case LibFunc_remainderl:
1483 case LibFunc_copysign:
1484 case LibFunc_copysignf:
1485 case LibFunc_copysignl:
1486 case LibFunc_pow:
1487 case LibFunc_pow_finite:
1488 case LibFunc_powf:
1489 case LibFunc_powf_finite:
1490 case LibFunc_powl:
1491 case LibFunc_powl_finite:
1492 return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1493 FTy.getReturnType() == FTy.getParamType(0) &&
1494 FTy.getReturnType() == FTy.getParamType(1));
1495
1496 case LibFunc_ldexp:
1497 case LibFunc_ldexpf:
1498 case LibFunc_ldexpl:
1499 return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1500 FTy.getReturnType() == FTy.getParamType(0) &&
1501 FTy.getParamType(1)->isIntegerTy(32));
1502
1503 case LibFunc_ffs:
1504 case LibFunc_ffsl:
1505 case LibFunc_ffsll:
1506 case LibFunc_fls:
1507 case LibFunc_flsl:
1508 case LibFunc_flsll:
1509 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1510 FTy.getParamType(0)->isIntegerTy());
1511
1512 case LibFunc_isdigit:
1513 case LibFunc_isascii:
1514 case LibFunc_toascii:
1515 case LibFunc_putchar:
1516 case LibFunc_putchar_unlocked:
1517 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1518 FTy.getReturnType() == FTy.getParamType(0));
1519
1520 case LibFunc_abs:
1521 case LibFunc_labs:
1522 case LibFunc_llabs:
1523 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1524 FTy.getReturnType() == FTy.getParamType(0));
1525
1526 case LibFunc_cxa_atexit:
1527 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1528 FTy.getParamType(0)->isPointerTy() &&
1529 FTy.getParamType(1)->isPointerTy() &&
1530 FTy.getParamType(2)->isPointerTy());
1531
1532 case LibFunc_sinpi:
1533 case LibFunc_cospi:
1534 return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1535 FTy.getReturnType() == FTy.getParamType(0));
1536
1537 case LibFunc_sinpif:
1538 case LibFunc_cospif:
1539 return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1540 FTy.getReturnType() == FTy.getParamType(0));
1541
1542 case LibFunc_strnlen:
1543 return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1544 FTy.getParamType(0)->isPointerTy() &&
1545 IsSizeTTy(FTy.getParamType(1)));
1546
1547 case LibFunc_posix_memalign:
1548 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1549 FTy.getParamType(0)->isPointerTy() &&
1550 IsSizeTTy(FTy.getParamType(1)) && IsSizeTTy(FTy.getParamType(2)));
1551
1552 case LibFunc_wcslen:
1553 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1554 FTy.getReturnType()->isIntegerTy());
1555
1556 case LibFunc_cabs:
1557 case LibFunc_cabsf:
1558 case LibFunc_cabsl: {
1559 Type* RetTy = FTy.getReturnType();
1560 if (!RetTy->isFloatingPointTy())
1561 return false;
1562
1563 // NOTE: These prototypes are target specific and currently support
1564 // "complex" passed as an array or discrete real & imaginary parameters.
1565 // Add other calling conventions to enable libcall optimizations.
1566 if (NumParams == 1)
1567 return (FTy.getParamType(0)->isArrayTy() &&
1568 FTy.getParamType(0)->getArrayNumElements() == 2 &&
1569 FTy.getParamType(0)->getArrayElementType() == RetTy);
1570 else if (NumParams == 2)
1571 return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1572 else
1573 return false;
1574 }
1575 case LibFunc::NumLibFuncs:
1576 case LibFunc::NotLibFunc:
1577 break;
1578 }
1579
1580 llvm_unreachable("Invalid libfunc");
1581 }
1582
getLibFunc(const Function & FDecl,LibFunc & F) const1583 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1584 LibFunc &F) const {
1585 // Intrinsics don't overlap w/libcalls; if our module has a large number of
1586 // intrinsics, this ends up being an interesting compile time win since we
1587 // avoid string normalization and comparison.
1588 if (FDecl.isIntrinsic()) return false;
1589
1590 const DataLayout *DL =
1591 FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1592 return getLibFunc(FDecl.getName(), F) &&
1593 isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1594 }
1595
disableAllFunctions()1596 void TargetLibraryInfoImpl::disableAllFunctions() {
1597 memset(AvailableArray, 0, sizeof(AvailableArray));
1598 }
1599
compareByScalarFnName(const VecDesc & LHS,const VecDesc & RHS)1600 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1601 return LHS.ScalarFnName < RHS.ScalarFnName;
1602 }
1603
compareByVectorFnName(const VecDesc & LHS,const VecDesc & RHS)1604 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1605 return LHS.VectorFnName < RHS.VectorFnName;
1606 }
1607
compareWithScalarFnName(const VecDesc & LHS,StringRef S)1608 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1609 return LHS.ScalarFnName < S;
1610 }
1611
addVectorizableFunctions(ArrayRef<VecDesc> Fns)1612 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1613 llvm::append_range(VectorDescs, Fns);
1614 llvm::sort(VectorDescs, compareByScalarFnName);
1615
1616 llvm::append_range(ScalarDescs, Fns);
1617 llvm::sort(ScalarDescs, compareByVectorFnName);
1618 }
1619
addVectorizableFunctionsFromVecLib(enum VectorLibrary VecLib)1620 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1621 enum VectorLibrary VecLib) {
1622 switch (VecLib) {
1623 case Accelerate: {
1624 const VecDesc VecFuncs[] = {
1625 #define TLI_DEFINE_ACCELERATE_VECFUNCS
1626 #include "llvm/Analysis/VecFuncs.def"
1627 };
1628 addVectorizableFunctions(VecFuncs);
1629 break;
1630 }
1631 case DarwinLibSystemM: {
1632 const VecDesc VecFuncs[] = {
1633 #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS
1634 #include "llvm/Analysis/VecFuncs.def"
1635 };
1636 addVectorizableFunctions(VecFuncs);
1637 break;
1638 }
1639 case LIBMVEC_X86: {
1640 const VecDesc VecFuncs[] = {
1641 #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS
1642 #include "llvm/Analysis/VecFuncs.def"
1643 };
1644 addVectorizableFunctions(VecFuncs);
1645 break;
1646 }
1647 case MASSV: {
1648 const VecDesc VecFuncs[] = {
1649 #define TLI_DEFINE_MASSV_VECFUNCS
1650 #include "llvm/Analysis/VecFuncs.def"
1651 };
1652 addVectorizableFunctions(VecFuncs);
1653 break;
1654 }
1655 case SVML: {
1656 const VecDesc VecFuncs[] = {
1657 #define TLI_DEFINE_SVML_VECFUNCS
1658 #include "llvm/Analysis/VecFuncs.def"
1659 };
1660 addVectorizableFunctions(VecFuncs);
1661 break;
1662 }
1663 case NoLibrary:
1664 break;
1665 }
1666 }
1667
isFunctionVectorizable(StringRef funcName) const1668 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1669 funcName = sanitizeFunctionName(funcName);
1670 if (funcName.empty())
1671 return false;
1672
1673 std::vector<VecDesc>::const_iterator I =
1674 llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1675 return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1676 }
1677
1678 StringRef
getVectorizedFunction(StringRef F,const ElementCount & VF) const1679 TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1680 const ElementCount &VF) const {
1681 F = sanitizeFunctionName(F);
1682 if (F.empty())
1683 return F;
1684 std::vector<VecDesc>::const_iterator I =
1685 llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1686 while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1687 if (I->VectorizationFactor == VF)
1688 return I->VectorFnName;
1689 ++I;
1690 }
1691 return StringRef();
1692 }
1693
run(const Function & F,FunctionAnalysisManager &)1694 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
1695 FunctionAnalysisManager &) {
1696 if (!BaselineInfoImpl)
1697 BaselineInfoImpl =
1698 TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1699 return TargetLibraryInfo(*BaselineInfoImpl, &F);
1700 }
1701
getWCharSize(const Module & M) const1702 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1703 if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1704 M.getModuleFlag("wchar_size")))
1705 return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1706 return 0;
1707 }
1708
TargetLibraryInfoWrapperPass()1709 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1710 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1711 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1712 }
1713
TargetLibraryInfoWrapperPass(const Triple & T)1714 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1715 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1716 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1717 }
1718
TargetLibraryInfoWrapperPass(const TargetLibraryInfoImpl & TLIImpl)1719 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1720 const TargetLibraryInfoImpl &TLIImpl)
1721 : ImmutablePass(ID), TLA(TLIImpl) {
1722 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1723 }
1724
1725 AnalysisKey TargetLibraryAnalysis::Key;
1726
1727 // Register the basic pass.
1728 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1729 "Target Library Information", false, true)
1730 char TargetLibraryInfoWrapperPass::ID = 0;
1731
anchor()1732 void TargetLibraryInfoWrapperPass::anchor() {}
1733
getWidestVF(StringRef ScalarF,ElementCount & FixedVF,ElementCount & ScalableVF) const1734 void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF,
1735 ElementCount &FixedVF,
1736 ElementCount &ScalableVF) const {
1737 ScalarF = sanitizeFunctionName(ScalarF);
1738 // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the
1739 // same as a scalar.
1740 ScalableVF = ElementCount::getScalable(0);
1741 FixedVF = ElementCount::getFixed(1);
1742 if (ScalarF.empty())
1743 return;
1744
1745 std::vector<VecDesc>::const_iterator I =
1746 llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1747 while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1748 ElementCount *VF =
1749 I->VectorizationFactor.isScalable() ? &ScalableVF : &FixedVF;
1750 if (ElementCount::isKnownGT(I->VectorizationFactor, *VF))
1751 *VF = I->VectorizationFactor;
1752 ++I;
1753 }
1754 }
1755