1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the TargetLibraryInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "llvm/Analysis/TargetLibraryInfo.h"
14 #include "llvm/ADT/Triple.h"
15 #include "llvm/IR/Constants.h"
16 #include "llvm/InitializePasses.h"
17 #include "llvm/Support/CommandLine.h"
18 using namespace llvm;
19
20 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
21 "vector-library", cl::Hidden, cl::desc("Vector functions library"),
22 cl::init(TargetLibraryInfoImpl::NoLibrary),
23 cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
24 "No vector functions library"),
25 clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
26 "Accelerate framework"),
27 clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
28 "IBM MASS vector library"),
29 clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
30 "Intel SVML library")));
31
32 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
33 {
34 #define TLI_DEFINE_STRING
35 #include "llvm/Analysis/TargetLibraryInfo.def"
36 };
37
hasSinCosPiStret(const Triple & T)38 static bool hasSinCosPiStret(const Triple &T) {
39 // Only Darwin variants have _stret versions of combined trig functions.
40 if (!T.isOSDarwin())
41 return false;
42
43 // The ABI is rather complicated on x86, so don't do anything special there.
44 if (T.getArch() == Triple::x86)
45 return false;
46
47 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
48 return false;
49
50 if (T.isiOS() && T.isOSVersionLT(7, 0))
51 return false;
52
53 return true;
54 }
55
hasBcmp(const Triple & TT)56 static bool hasBcmp(const Triple &TT) {
57 // Posix removed support from bcmp() in 2001, but the glibc and several
58 // implementations of the libc still have it.
59 if (TT.isOSLinux())
60 return TT.isGNUEnvironment() || TT.isMusl();
61 // Both NetBSD and OpenBSD are planning to remove the function. Windows does
62 // not have it.
63 return TT.isOSFreeBSD() || TT.isOSSolaris();
64 }
65
66 /// Initialize the set of available library functions based on the specified
67 /// target triple. This should be carefully written so that a missing target
68 /// triple gets a sane set of defaults.
initialize(TargetLibraryInfoImpl & TLI,const Triple & T,ArrayRef<StringLiteral> StandardNames)69 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
70 ArrayRef<StringLiteral> StandardNames) {
71 // Verify that the StandardNames array is in alphabetical order.
72 assert(
73 llvm::is_sorted(StandardNames,
74 [](StringRef LHS, StringRef RHS) { return LHS < RHS; }) &&
75 "TargetLibraryInfoImpl function names must be sorted");
76
77 // Set IO unlocked variants as unavailable
78 // Set them as available per system below
79 TLI.setUnavailable(LibFunc_getchar_unlocked);
80 TLI.setUnavailable(LibFunc_putc_unlocked);
81 TLI.setUnavailable(LibFunc_putchar_unlocked);
82 TLI.setUnavailable(LibFunc_fputc_unlocked);
83 TLI.setUnavailable(LibFunc_fgetc_unlocked);
84 TLI.setUnavailable(LibFunc_fread_unlocked);
85 TLI.setUnavailable(LibFunc_fwrite_unlocked);
86 TLI.setUnavailable(LibFunc_fputs_unlocked);
87 TLI.setUnavailable(LibFunc_fgets_unlocked);
88
89 bool ShouldExtI32Param = false, ShouldExtI32Return = false,
90 ShouldSignExtI32Param = false;
91 // PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
92 // returns corresponding to C-level ints and unsigned ints.
93 if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
94 T.getArch() == Triple::systemz) {
95 ShouldExtI32Param = true;
96 ShouldExtI32Return = true;
97 }
98 // Mips, on the other hand, needs signext on i32 parameters corresponding
99 // to both signed and unsigned ints.
100 if (T.isMIPS()) {
101 ShouldSignExtI32Param = true;
102 }
103 TLI.setShouldExtI32Param(ShouldExtI32Param);
104 TLI.setShouldExtI32Return(ShouldExtI32Return);
105 TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
106
107 if (T.isAMDGPU())
108 TLI.disableAllFunctions();
109
110 // There are no library implementations of memcpy and memset for AMD gpus and
111 // these can be difficult to lower in the backend.
112 if (T.isAMDGPU()) {
113 TLI.setUnavailable(LibFunc_memcpy);
114 TLI.setUnavailable(LibFunc_memset);
115 TLI.setUnavailable(LibFunc_memset_pattern16);
116 return;
117 }
118
119 // memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
120 // All versions of watchOS support it.
121 if (T.isMacOSX()) {
122 // available IO unlocked variants on Mac OS X
123 TLI.setAvailable(LibFunc_getc_unlocked);
124 TLI.setAvailable(LibFunc_getchar_unlocked);
125 TLI.setAvailable(LibFunc_putc_unlocked);
126 TLI.setAvailable(LibFunc_putchar_unlocked);
127
128 if (T.isMacOSXVersionLT(10, 5))
129 TLI.setUnavailable(LibFunc_memset_pattern16);
130 } else if (T.isiOS()) {
131 if (T.isOSVersionLT(3, 0))
132 TLI.setUnavailable(LibFunc_memset_pattern16);
133 } else if (!T.isWatchOS()) {
134 TLI.setUnavailable(LibFunc_memset_pattern16);
135 }
136
137 if (!hasSinCosPiStret(T)) {
138 TLI.setUnavailable(LibFunc_sinpi);
139 TLI.setUnavailable(LibFunc_sinpif);
140 TLI.setUnavailable(LibFunc_cospi);
141 TLI.setUnavailable(LibFunc_cospif);
142 TLI.setUnavailable(LibFunc_sincospi_stret);
143 TLI.setUnavailable(LibFunc_sincospif_stret);
144 }
145
146 if (!hasBcmp(T))
147 TLI.setUnavailable(LibFunc_bcmp);
148
149 if (T.isMacOSX() && T.getArch() == Triple::x86 &&
150 !T.isMacOSXVersionLT(10, 7)) {
151 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
152 // we don't care about) have two versions; on recent OSX, the one we want
153 // has a $UNIX2003 suffix. The two implementations are identical except
154 // for the return value in some edge cases. However, we don't want to
155 // generate code that depends on the old symbols.
156 TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
157 TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
158 }
159
160 // iprintf and friends are only available on XCore, TCE, and Emscripten.
161 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
162 T.getOS() != Triple::Emscripten) {
163 TLI.setUnavailable(LibFunc_iprintf);
164 TLI.setUnavailable(LibFunc_siprintf);
165 TLI.setUnavailable(LibFunc_fiprintf);
166 }
167
168 // __small_printf and friends are only available on Emscripten.
169 if (T.getOS() != Triple::Emscripten) {
170 TLI.setUnavailable(LibFunc_small_printf);
171 TLI.setUnavailable(LibFunc_small_sprintf);
172 TLI.setUnavailable(LibFunc_small_fprintf);
173 }
174
175 if (T.isOSWindows() && !T.isOSCygMing()) {
176 // XXX: The earliest documentation available at the moment is for VS2015/VC19:
177 // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
178 // XXX: In order to use an MSVCRT older than VC19,
179 // the specific library version must be explicit in the target triple,
180 // e.g., x86_64-pc-windows-msvc18.
181 bool hasPartialC99 = true;
182 if (T.isKnownWindowsMSVCEnvironment()) {
183 unsigned Major, Minor, Micro;
184 T.getEnvironmentVersion(Major, Minor, Micro);
185 hasPartialC99 = (Major == 0 || Major >= 19);
186 }
187
188 // Latest targets support C89 math functions, in part.
189 bool isARM = (T.getArch() == Triple::aarch64 ||
190 T.getArch() == Triple::arm);
191 bool hasPartialFloat = (isARM ||
192 T.getArch() == Triple::x86_64);
193
194 // Win32 does not support float C89 math functions, in general.
195 if (!hasPartialFloat) {
196 TLI.setUnavailable(LibFunc_acosf);
197 TLI.setUnavailable(LibFunc_asinf);
198 TLI.setUnavailable(LibFunc_atan2f);
199 TLI.setUnavailable(LibFunc_atanf);
200 TLI.setUnavailable(LibFunc_ceilf);
201 TLI.setUnavailable(LibFunc_cosf);
202 TLI.setUnavailable(LibFunc_coshf);
203 TLI.setUnavailable(LibFunc_expf);
204 TLI.setUnavailable(LibFunc_floorf);
205 TLI.setUnavailable(LibFunc_fmodf);
206 TLI.setUnavailable(LibFunc_log10f);
207 TLI.setUnavailable(LibFunc_logf);
208 TLI.setUnavailable(LibFunc_modff);
209 TLI.setUnavailable(LibFunc_powf);
210 TLI.setUnavailable(LibFunc_remainderf);
211 TLI.setUnavailable(LibFunc_sinf);
212 TLI.setUnavailable(LibFunc_sinhf);
213 TLI.setUnavailable(LibFunc_sqrtf);
214 TLI.setUnavailable(LibFunc_tanf);
215 TLI.setUnavailable(LibFunc_tanhf);
216 }
217 if (!isARM)
218 TLI.setUnavailable(LibFunc_fabsf);
219 TLI.setUnavailable(LibFunc_frexpf);
220 TLI.setUnavailable(LibFunc_ldexpf);
221
222 // Win32 does not support long double C89 math functions.
223 TLI.setUnavailable(LibFunc_acosl);
224 TLI.setUnavailable(LibFunc_asinl);
225 TLI.setUnavailable(LibFunc_atan2l);
226 TLI.setUnavailable(LibFunc_atanl);
227 TLI.setUnavailable(LibFunc_ceill);
228 TLI.setUnavailable(LibFunc_cosl);
229 TLI.setUnavailable(LibFunc_coshl);
230 TLI.setUnavailable(LibFunc_expl);
231 TLI.setUnavailable(LibFunc_fabsl);
232 TLI.setUnavailable(LibFunc_floorl);
233 TLI.setUnavailable(LibFunc_fmodl);
234 TLI.setUnavailable(LibFunc_frexpl);
235 TLI.setUnavailable(LibFunc_ldexpl);
236 TLI.setUnavailable(LibFunc_log10l);
237 TLI.setUnavailable(LibFunc_logl);
238 TLI.setUnavailable(LibFunc_modfl);
239 TLI.setUnavailable(LibFunc_powl);
240 TLI.setUnavailable(LibFunc_remainderl);
241 TLI.setUnavailable(LibFunc_sinl);
242 TLI.setUnavailable(LibFunc_sinhl);
243 TLI.setUnavailable(LibFunc_sqrtl);
244 TLI.setUnavailable(LibFunc_tanl);
245 TLI.setUnavailable(LibFunc_tanhl);
246
247 // Win32 does not fully support C99 math functions.
248 if (!hasPartialC99) {
249 TLI.setUnavailable(LibFunc_acosh);
250 TLI.setUnavailable(LibFunc_acoshf);
251 TLI.setUnavailable(LibFunc_asinh);
252 TLI.setUnavailable(LibFunc_asinhf);
253 TLI.setUnavailable(LibFunc_atanh);
254 TLI.setUnavailable(LibFunc_atanhf);
255 TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
256 TLI.setUnavailable(LibFunc_cabsf);
257 TLI.setUnavailable(LibFunc_cbrt);
258 TLI.setUnavailable(LibFunc_cbrtf);
259 TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
260 TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
261 TLI.setUnavailable(LibFunc_exp2);
262 TLI.setUnavailable(LibFunc_exp2f);
263 TLI.setUnavailable(LibFunc_expm1);
264 TLI.setUnavailable(LibFunc_expm1f);
265 TLI.setUnavailable(LibFunc_fmax);
266 TLI.setUnavailable(LibFunc_fmaxf);
267 TLI.setUnavailable(LibFunc_fmin);
268 TLI.setUnavailable(LibFunc_fminf);
269 TLI.setUnavailable(LibFunc_log1p);
270 TLI.setUnavailable(LibFunc_log1pf);
271 TLI.setUnavailable(LibFunc_log2);
272 TLI.setUnavailable(LibFunc_log2f);
273 TLI.setAvailableWithName(LibFunc_logb, "_logb");
274 if (hasPartialFloat)
275 TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
276 else
277 TLI.setUnavailable(LibFunc_logbf);
278 TLI.setUnavailable(LibFunc_rint);
279 TLI.setUnavailable(LibFunc_rintf);
280 TLI.setUnavailable(LibFunc_round);
281 TLI.setUnavailable(LibFunc_roundf);
282 TLI.setUnavailable(LibFunc_trunc);
283 TLI.setUnavailable(LibFunc_truncf);
284 }
285
286 // Win32 does not support long double C99 math functions.
287 TLI.setUnavailable(LibFunc_acoshl);
288 TLI.setUnavailable(LibFunc_asinhl);
289 TLI.setUnavailable(LibFunc_atanhl);
290 TLI.setUnavailable(LibFunc_cabsl);
291 TLI.setUnavailable(LibFunc_cbrtl);
292 TLI.setUnavailable(LibFunc_copysignl);
293 TLI.setUnavailable(LibFunc_exp2l);
294 TLI.setUnavailable(LibFunc_expm1l);
295 TLI.setUnavailable(LibFunc_fmaxl);
296 TLI.setUnavailable(LibFunc_fminl);
297 TLI.setUnavailable(LibFunc_log1pl);
298 TLI.setUnavailable(LibFunc_log2l);
299 TLI.setUnavailable(LibFunc_logbl);
300 TLI.setUnavailable(LibFunc_nearbyintl);
301 TLI.setUnavailable(LibFunc_rintl);
302 TLI.setUnavailable(LibFunc_roundl);
303 TLI.setUnavailable(LibFunc_truncl);
304
305 // Win32 does not support these functions, but
306 // they are generally available on POSIX-compliant systems.
307 TLI.setUnavailable(LibFunc_access);
308 TLI.setUnavailable(LibFunc_bcmp);
309 TLI.setUnavailable(LibFunc_bcopy);
310 TLI.setUnavailable(LibFunc_bzero);
311 TLI.setUnavailable(LibFunc_chmod);
312 TLI.setUnavailable(LibFunc_chown);
313 TLI.setUnavailable(LibFunc_closedir);
314 TLI.setUnavailable(LibFunc_ctermid);
315 TLI.setUnavailable(LibFunc_fdopen);
316 TLI.setUnavailable(LibFunc_ffs);
317 TLI.setUnavailable(LibFunc_fileno);
318 TLI.setUnavailable(LibFunc_flockfile);
319 TLI.setUnavailable(LibFunc_fseeko);
320 TLI.setUnavailable(LibFunc_fstat);
321 TLI.setUnavailable(LibFunc_fstatvfs);
322 TLI.setUnavailable(LibFunc_ftello);
323 TLI.setUnavailable(LibFunc_ftrylockfile);
324 TLI.setUnavailable(LibFunc_funlockfile);
325 TLI.setUnavailable(LibFunc_getitimer);
326 TLI.setUnavailable(LibFunc_getlogin_r);
327 TLI.setUnavailable(LibFunc_getpwnam);
328 TLI.setUnavailable(LibFunc_gettimeofday);
329 TLI.setUnavailable(LibFunc_htonl);
330 TLI.setUnavailable(LibFunc_htons);
331 TLI.setUnavailable(LibFunc_lchown);
332 TLI.setUnavailable(LibFunc_lstat);
333 TLI.setUnavailable(LibFunc_memccpy);
334 TLI.setUnavailable(LibFunc_mkdir);
335 TLI.setUnavailable(LibFunc_ntohl);
336 TLI.setUnavailable(LibFunc_ntohs);
337 TLI.setUnavailable(LibFunc_open);
338 TLI.setUnavailable(LibFunc_opendir);
339 TLI.setUnavailable(LibFunc_pclose);
340 TLI.setUnavailable(LibFunc_popen);
341 TLI.setUnavailable(LibFunc_pread);
342 TLI.setUnavailable(LibFunc_pwrite);
343 TLI.setUnavailable(LibFunc_read);
344 TLI.setUnavailable(LibFunc_readlink);
345 TLI.setUnavailable(LibFunc_realpath);
346 TLI.setUnavailable(LibFunc_rmdir);
347 TLI.setUnavailable(LibFunc_setitimer);
348 TLI.setUnavailable(LibFunc_stat);
349 TLI.setUnavailable(LibFunc_statvfs);
350 TLI.setUnavailable(LibFunc_stpcpy);
351 TLI.setUnavailable(LibFunc_stpncpy);
352 TLI.setUnavailable(LibFunc_strcasecmp);
353 TLI.setUnavailable(LibFunc_strncasecmp);
354 TLI.setUnavailable(LibFunc_times);
355 TLI.setUnavailable(LibFunc_uname);
356 TLI.setUnavailable(LibFunc_unlink);
357 TLI.setUnavailable(LibFunc_unsetenv);
358 TLI.setUnavailable(LibFunc_utime);
359 TLI.setUnavailable(LibFunc_utimes);
360 TLI.setUnavailable(LibFunc_write);
361 }
362
363 switch (T.getOS()) {
364 case Triple::MacOSX:
365 // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
366 // and their names are __exp10 and __exp10f. exp10l is not available on
367 // OS X or iOS.
368 TLI.setUnavailable(LibFunc_exp10l);
369 if (T.isMacOSXVersionLT(10, 9)) {
370 TLI.setUnavailable(LibFunc_exp10);
371 TLI.setUnavailable(LibFunc_exp10f);
372 } else {
373 TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
374 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
375 }
376 break;
377 case Triple::IOS:
378 case Triple::TvOS:
379 case Triple::WatchOS:
380 TLI.setUnavailable(LibFunc_exp10l);
381 if (!T.isWatchOS() &&
382 (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
383 TLI.setUnavailable(LibFunc_exp10);
384 TLI.setUnavailable(LibFunc_exp10f);
385 } else {
386 TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
387 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
388 }
389 break;
390 case Triple::Linux:
391 // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
392 // buggy prior to glibc version 2.18. Until this version is widely deployed
393 // or we have a reasonable detection strategy, we cannot use exp10 reliably
394 // on Linux.
395 //
396 // Fall through to disable all of them.
397 LLVM_FALLTHROUGH;
398 default:
399 TLI.setUnavailable(LibFunc_exp10);
400 TLI.setUnavailable(LibFunc_exp10f);
401 TLI.setUnavailable(LibFunc_exp10l);
402 }
403
404 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
405 // Linux (GLIBC):
406 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
407 // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
408 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
409 switch (T.getOS()) {
410 case Triple::Darwin:
411 case Triple::MacOSX:
412 case Triple::IOS:
413 case Triple::TvOS:
414 case Triple::WatchOS:
415 case Triple::FreeBSD:
416 case Triple::Linux:
417 break;
418 default:
419 TLI.setUnavailable(LibFunc_ffsl);
420 }
421
422 // ffsll is available on at least FreeBSD and Linux (GLIBC):
423 // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
424 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
425 switch (T.getOS()) {
426 case Triple::Darwin:
427 case Triple::MacOSX:
428 case Triple::IOS:
429 case Triple::TvOS:
430 case Triple::WatchOS:
431 case Triple::FreeBSD:
432 case Triple::Linux:
433 break;
434 default:
435 TLI.setUnavailable(LibFunc_ffsll);
436 }
437
438 // The following functions are available on at least FreeBSD:
439 // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
440 // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
441 // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
442 if (!T.isOSFreeBSD()) {
443 TLI.setUnavailable(LibFunc_fls);
444 TLI.setUnavailable(LibFunc_flsl);
445 TLI.setUnavailable(LibFunc_flsll);
446 }
447
448 // The following functions are only available on GNU/Linux (using glibc).
449 // Linux variants without glibc (eg: bionic, musl) may have some subset.
450 if (!T.isOSLinux() || !T.isGNUEnvironment()) {
451 TLI.setUnavailable(LibFunc_dunder_strdup);
452 TLI.setUnavailable(LibFunc_dunder_strtok_r);
453 TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
454 TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
455 TLI.setUnavailable(LibFunc_under_IO_getc);
456 TLI.setUnavailable(LibFunc_under_IO_putc);
457 // But, Android and musl have memalign.
458 if (!T.isAndroid() && !T.isMusl())
459 TLI.setUnavailable(LibFunc_memalign);
460 TLI.setUnavailable(LibFunc_fopen64);
461 TLI.setUnavailable(LibFunc_fseeko64);
462 TLI.setUnavailable(LibFunc_fstat64);
463 TLI.setUnavailable(LibFunc_fstatvfs64);
464 TLI.setUnavailable(LibFunc_ftello64);
465 TLI.setUnavailable(LibFunc_lstat64);
466 TLI.setUnavailable(LibFunc_open64);
467 TLI.setUnavailable(LibFunc_stat64);
468 TLI.setUnavailable(LibFunc_statvfs64);
469 TLI.setUnavailable(LibFunc_tmpfile64);
470
471 // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
472 // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
473 // so we keep these functions around just so that they're recognized by
474 // the ConstantFolder.
475 TLI.setUnavailable(LibFunc_acos_finite);
476 TLI.setUnavailable(LibFunc_acosf_finite);
477 TLI.setUnavailable(LibFunc_acosl_finite);
478 TLI.setUnavailable(LibFunc_acosh_finite);
479 TLI.setUnavailable(LibFunc_acoshf_finite);
480 TLI.setUnavailable(LibFunc_acoshl_finite);
481 TLI.setUnavailable(LibFunc_asin_finite);
482 TLI.setUnavailable(LibFunc_asinf_finite);
483 TLI.setUnavailable(LibFunc_asinl_finite);
484 TLI.setUnavailable(LibFunc_atan2_finite);
485 TLI.setUnavailable(LibFunc_atan2f_finite);
486 TLI.setUnavailable(LibFunc_atan2l_finite);
487 TLI.setUnavailable(LibFunc_atanh_finite);
488 TLI.setUnavailable(LibFunc_atanhf_finite);
489 TLI.setUnavailable(LibFunc_atanhl_finite);
490 TLI.setUnavailable(LibFunc_cosh_finite);
491 TLI.setUnavailable(LibFunc_coshf_finite);
492 TLI.setUnavailable(LibFunc_coshl_finite);
493 TLI.setUnavailable(LibFunc_exp10_finite);
494 TLI.setUnavailable(LibFunc_exp10f_finite);
495 TLI.setUnavailable(LibFunc_exp10l_finite);
496 TLI.setUnavailable(LibFunc_exp2_finite);
497 TLI.setUnavailable(LibFunc_exp2f_finite);
498 TLI.setUnavailable(LibFunc_exp2l_finite);
499 TLI.setUnavailable(LibFunc_exp_finite);
500 TLI.setUnavailable(LibFunc_expf_finite);
501 TLI.setUnavailable(LibFunc_expl_finite);
502 TLI.setUnavailable(LibFunc_log10_finite);
503 TLI.setUnavailable(LibFunc_log10f_finite);
504 TLI.setUnavailable(LibFunc_log10l_finite);
505 TLI.setUnavailable(LibFunc_log2_finite);
506 TLI.setUnavailable(LibFunc_log2f_finite);
507 TLI.setUnavailable(LibFunc_log2l_finite);
508 TLI.setUnavailable(LibFunc_log_finite);
509 TLI.setUnavailable(LibFunc_logf_finite);
510 TLI.setUnavailable(LibFunc_logl_finite);
511 TLI.setUnavailable(LibFunc_pow_finite);
512 TLI.setUnavailable(LibFunc_powf_finite);
513 TLI.setUnavailable(LibFunc_powl_finite);
514 TLI.setUnavailable(LibFunc_sinh_finite);
515 TLI.setUnavailable(LibFunc_sinhf_finite);
516 TLI.setUnavailable(LibFunc_sinhl_finite);
517 }
518
519 if ((T.isOSLinux() && T.isGNUEnvironment()) ||
520 (T.isAndroid() && !T.isAndroidVersionLT(28))) {
521 // available IO unlocked variants on GNU/Linux and Android P or later
522 TLI.setAvailable(LibFunc_getc_unlocked);
523 TLI.setAvailable(LibFunc_getchar_unlocked);
524 TLI.setAvailable(LibFunc_putc_unlocked);
525 TLI.setAvailable(LibFunc_putchar_unlocked);
526 TLI.setAvailable(LibFunc_fputc_unlocked);
527 TLI.setAvailable(LibFunc_fgetc_unlocked);
528 TLI.setAvailable(LibFunc_fread_unlocked);
529 TLI.setAvailable(LibFunc_fwrite_unlocked);
530 TLI.setAvailable(LibFunc_fputs_unlocked);
531 TLI.setAvailable(LibFunc_fgets_unlocked);
532 }
533
534 // As currently implemented in clang, NVPTX code has no standard library to
535 // speak of. Headers provide a standard-ish library implementation, but many
536 // of the signatures are wrong -- for example, many libm functions are not
537 // extern "C".
538 //
539 // libdevice, an IR library provided by nvidia, is linked in by the front-end,
540 // but only used functions are provided to llvm. Moreover, most of the
541 // functions in libdevice don't map precisely to standard library functions.
542 //
543 // FIXME: Having no standard library prevents e.g. many fastmath
544 // optimizations, so this situation should be fixed.
545 if (T.isNVPTX()) {
546 TLI.disableAllFunctions();
547 TLI.setAvailable(LibFunc_nvvm_reflect);
548 } else {
549 TLI.setUnavailable(LibFunc_nvvm_reflect);
550 }
551
552 TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
553 }
554
TargetLibraryInfoImpl()555 TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
556 // Default to everything being available.
557 memset(AvailableArray, -1, sizeof(AvailableArray));
558
559 initialize(*this, Triple(), StandardNames);
560 }
561
TargetLibraryInfoImpl(const Triple & T)562 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
563 // Default to everything being available.
564 memset(AvailableArray, -1, sizeof(AvailableArray));
565
566 initialize(*this, T, StandardNames);
567 }
568
TargetLibraryInfoImpl(const TargetLibraryInfoImpl & TLI)569 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
570 : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
571 ShouldExtI32Return(TLI.ShouldExtI32Return),
572 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
573 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
574 VectorDescs = TLI.VectorDescs;
575 ScalarDescs = TLI.ScalarDescs;
576 }
577
TargetLibraryInfoImpl(TargetLibraryInfoImpl && TLI)578 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
579 : CustomNames(std::move(TLI.CustomNames)),
580 ShouldExtI32Param(TLI.ShouldExtI32Param),
581 ShouldExtI32Return(TLI.ShouldExtI32Return),
582 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param) {
583 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
584 AvailableArray);
585 VectorDescs = TLI.VectorDescs;
586 ScalarDescs = TLI.ScalarDescs;
587 }
588
operator =(const TargetLibraryInfoImpl & TLI)589 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
590 CustomNames = TLI.CustomNames;
591 ShouldExtI32Param = TLI.ShouldExtI32Param;
592 ShouldExtI32Return = TLI.ShouldExtI32Return;
593 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
594 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
595 return *this;
596 }
597
operator =(TargetLibraryInfoImpl && TLI)598 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
599 CustomNames = std::move(TLI.CustomNames);
600 ShouldExtI32Param = TLI.ShouldExtI32Param;
601 ShouldExtI32Return = TLI.ShouldExtI32Return;
602 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
603 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
604 AvailableArray);
605 return *this;
606 }
607
sanitizeFunctionName(StringRef funcName)608 static StringRef sanitizeFunctionName(StringRef funcName) {
609 // Filter out empty names and names containing null bytes, those can't be in
610 // our table.
611 if (funcName.empty() || funcName.find('\0') != StringRef::npos)
612 return StringRef();
613
614 // Check for \01 prefix that is used to mangle __asm declarations and
615 // strip it if present.
616 return GlobalValue::dropLLVMManglingEscape(funcName);
617 }
618
getLibFunc(StringRef funcName,LibFunc & F) const619 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
620 funcName = sanitizeFunctionName(funcName);
621 if (funcName.empty())
622 return false;
623
624 const auto *Start = std::begin(StandardNames);
625 const auto *End = std::end(StandardNames);
626 const auto *I = std::lower_bound(Start, End, funcName);
627 if (I != End && *I == funcName) {
628 F = (LibFunc)(I - Start);
629 return true;
630 }
631 return false;
632 }
633
isValidProtoForLibFunc(const FunctionType & FTy,LibFunc F,const DataLayout * DL) const634 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
635 LibFunc F,
636 const DataLayout *DL) const {
637 LLVMContext &Ctx = FTy.getContext();
638 Type *PCharTy = Type::getInt8PtrTy(Ctx);
639 Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AS=*/0) : nullptr;
640 auto IsSizeTTy = [SizeTTy](Type *Ty) {
641 return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
642 };
643 unsigned NumParams = FTy.getNumParams();
644
645 switch (F) {
646 case LibFunc_execl:
647 case LibFunc_execlp:
648 case LibFunc_execle:
649 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
650 FTy.getParamType(1)->isPointerTy() &&
651 FTy.getReturnType()->isIntegerTy(32));
652 case LibFunc_execv:
653 case LibFunc_execvp:
654 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
655 FTy.getParamType(1)->isPointerTy() &&
656 FTy.getReturnType()->isIntegerTy(32));
657 case LibFunc_execvP:
658 case LibFunc_execvpe:
659 case LibFunc_execve:
660 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
661 FTy.getParamType(1)->isPointerTy() &&
662 FTy.getParamType(2)->isPointerTy() &&
663 FTy.getReturnType()->isIntegerTy(32));
664 case LibFunc_strlen_chk:
665 --NumParams;
666 if (!IsSizeTTy(FTy.getParamType(NumParams)))
667 return false;
668 LLVM_FALLTHROUGH;
669 case LibFunc_strlen:
670 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
671 FTy.getReturnType()->isIntegerTy());
672
673 case LibFunc_strchr:
674 case LibFunc_strrchr:
675 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
676 FTy.getParamType(0) == FTy.getReturnType() &&
677 FTy.getParamType(1)->isIntegerTy());
678
679 case LibFunc_strtol:
680 case LibFunc_strtod:
681 case LibFunc_strtof:
682 case LibFunc_strtoul:
683 case LibFunc_strtoll:
684 case LibFunc_strtold:
685 case LibFunc_strtoull:
686 return ((NumParams == 2 || NumParams == 3) &&
687 FTy.getParamType(0)->isPointerTy() &&
688 FTy.getParamType(1)->isPointerTy());
689 case LibFunc_strcat_chk:
690 --NumParams;
691 if (!IsSizeTTy(FTy.getParamType(NumParams)))
692 return false;
693 LLVM_FALLTHROUGH;
694 case LibFunc_strcat:
695 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
696 FTy.getParamType(0) == FTy.getReturnType() &&
697 FTy.getParamType(1) == FTy.getReturnType());
698
699 case LibFunc_strncat_chk:
700 --NumParams;
701 if (!IsSizeTTy(FTy.getParamType(NumParams)))
702 return false;
703 LLVM_FALLTHROUGH;
704 case LibFunc_strncat:
705 return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
706 FTy.getParamType(0) == FTy.getReturnType() &&
707 FTy.getParamType(1) == FTy.getReturnType() &&
708 IsSizeTTy(FTy.getParamType(2)));
709
710 case LibFunc_strcpy_chk:
711 case LibFunc_stpcpy_chk:
712 --NumParams;
713 if (!IsSizeTTy(FTy.getParamType(NumParams)))
714 return false;
715 LLVM_FALLTHROUGH;
716 case LibFunc_strcpy:
717 case LibFunc_stpcpy:
718 return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
719 FTy.getParamType(0) == FTy.getParamType(1) &&
720 FTy.getParamType(0) == PCharTy);
721
722 case LibFunc_strlcat_chk:
723 case LibFunc_strlcpy_chk:
724 --NumParams;
725 if (!IsSizeTTy(FTy.getParamType(NumParams)))
726 return false;
727 LLVM_FALLTHROUGH;
728 case LibFunc_strlcat:
729 case LibFunc_strlcpy:
730 return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
731 FTy.getParamType(0)->isPointerTy() &&
732 FTy.getParamType(1)->isPointerTy() &&
733 IsSizeTTy(FTy.getParamType(2));
734
735 case LibFunc_strncpy_chk:
736 case LibFunc_stpncpy_chk:
737 --NumParams;
738 if (!IsSizeTTy(FTy.getParamType(NumParams)))
739 return false;
740 LLVM_FALLTHROUGH;
741 case LibFunc_strncpy:
742 case LibFunc_stpncpy:
743 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
744 FTy.getParamType(0) == FTy.getParamType(1) &&
745 FTy.getParamType(0) == PCharTy &&
746 IsSizeTTy(FTy.getParamType(2)));
747
748 case LibFunc_strxfrm:
749 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
750 FTy.getParamType(1)->isPointerTy());
751
752 case LibFunc_strcmp:
753 return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
754 FTy.getParamType(0)->isPointerTy() &&
755 FTy.getParamType(0) == FTy.getParamType(1));
756
757 case LibFunc_strncmp:
758 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
759 FTy.getParamType(0)->isPointerTy() &&
760 FTy.getParamType(0) == FTy.getParamType(1) &&
761 IsSizeTTy(FTy.getParamType(2)));
762
763 case LibFunc_strspn:
764 case LibFunc_strcspn:
765 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
766 FTy.getParamType(0) == FTy.getParamType(1) &&
767 FTy.getReturnType()->isIntegerTy());
768
769 case LibFunc_strcoll:
770 case LibFunc_strcasecmp:
771 case LibFunc_strncasecmp:
772 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
773 FTy.getParamType(1)->isPointerTy());
774
775 case LibFunc_strstr:
776 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
777 FTy.getParamType(0)->isPointerTy() &&
778 FTy.getParamType(1)->isPointerTy());
779
780 case LibFunc_strpbrk:
781 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
782 FTy.getReturnType() == FTy.getParamType(0) &&
783 FTy.getParamType(0) == FTy.getParamType(1));
784
785 case LibFunc_strtok:
786 case LibFunc_strtok_r:
787 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
788 case LibFunc_scanf:
789 case LibFunc_setbuf:
790 case LibFunc_setvbuf:
791 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
792 case LibFunc_strdup:
793 case LibFunc_strndup:
794 return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
795 FTy.getParamType(0)->isPointerTy());
796 case LibFunc_sscanf:
797 case LibFunc_stat:
798 case LibFunc_statvfs:
799 case LibFunc_siprintf:
800 case LibFunc_small_sprintf:
801 case LibFunc_sprintf:
802 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
803 FTy.getParamType(1)->isPointerTy() &&
804 FTy.getReturnType()->isIntegerTy(32));
805
806 case LibFunc_sprintf_chk:
807 return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
808 FTy.getParamType(1)->isIntegerTy(32) &&
809 IsSizeTTy(FTy.getParamType(2)) &&
810 FTy.getParamType(3)->isPointerTy() &&
811 FTy.getReturnType()->isIntegerTy(32);
812
813 case LibFunc_snprintf:
814 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
815 FTy.getParamType(2)->isPointerTy() &&
816 FTy.getReturnType()->isIntegerTy(32));
817
818 case LibFunc_snprintf_chk:
819 return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
820 IsSizeTTy(FTy.getParamType(1)) &&
821 FTy.getParamType(2)->isIntegerTy(32) &&
822 IsSizeTTy(FTy.getParamType(3)) &&
823 FTy.getParamType(4)->isPointerTy() &&
824 FTy.getReturnType()->isIntegerTy(32);
825
826 case LibFunc_setitimer:
827 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
828 FTy.getParamType(2)->isPointerTy());
829 case LibFunc_system:
830 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
831 case LibFunc_malloc:
832 return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
833 case LibFunc_memcmp:
834 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
835 FTy.getParamType(0)->isPointerTy() &&
836 FTy.getParamType(1)->isPointerTy());
837
838 case LibFunc_memchr:
839 case LibFunc_memrchr:
840 return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
841 FTy.getReturnType() == FTy.getParamType(0) &&
842 FTy.getParamType(1)->isIntegerTy(32) &&
843 IsSizeTTy(FTy.getParamType(2)));
844 case LibFunc_modf:
845 case LibFunc_modff:
846 case LibFunc_modfl:
847 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
848
849 case LibFunc_memcpy_chk:
850 case LibFunc_memmove_chk:
851 --NumParams;
852 if (!IsSizeTTy(FTy.getParamType(NumParams)))
853 return false;
854 LLVM_FALLTHROUGH;
855 case LibFunc_memcpy:
856 case LibFunc_mempcpy:
857 case LibFunc_memmove:
858 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
859 FTy.getParamType(0)->isPointerTy() &&
860 FTy.getParamType(1)->isPointerTy() &&
861 IsSizeTTy(FTy.getParamType(2)));
862
863 case LibFunc_memset_chk:
864 --NumParams;
865 if (!IsSizeTTy(FTy.getParamType(NumParams)))
866 return false;
867 LLVM_FALLTHROUGH;
868 case LibFunc_memset:
869 return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
870 FTy.getParamType(0)->isPointerTy() &&
871 FTy.getParamType(1)->isIntegerTy() &&
872 IsSizeTTy(FTy.getParamType(2)));
873
874 case LibFunc_memccpy_chk:
875 --NumParams;
876 if (!IsSizeTTy(FTy.getParamType(NumParams)))
877 return false;
878 LLVM_FALLTHROUGH;
879 case LibFunc_memccpy:
880 return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
881 case LibFunc_memalign:
882 return (FTy.getReturnType()->isPointerTy());
883 case LibFunc_realloc:
884 case LibFunc_reallocf:
885 return (NumParams == 2 && FTy.getReturnType() == PCharTy &&
886 FTy.getParamType(0) == FTy.getReturnType() &&
887 IsSizeTTy(FTy.getParamType(1)));
888 case LibFunc_read:
889 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
890 case LibFunc_rewind:
891 case LibFunc_rmdir:
892 case LibFunc_remove:
893 case LibFunc_realpath:
894 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
895 case LibFunc_rename:
896 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
897 FTy.getParamType(1)->isPointerTy());
898 case LibFunc_readlink:
899 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
900 FTy.getParamType(1)->isPointerTy());
901 case LibFunc_write:
902 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
903 case LibFunc_aligned_alloc:
904 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
905 case LibFunc_bcopy:
906 case LibFunc_bcmp:
907 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
908 FTy.getParamType(1)->isPointerTy());
909 case LibFunc_bzero:
910 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
911 case LibFunc_calloc:
912 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
913
914 case LibFunc_atof:
915 case LibFunc_atoi:
916 case LibFunc_atol:
917 case LibFunc_atoll:
918 case LibFunc_ferror:
919 case LibFunc_getenv:
920 case LibFunc_getpwnam:
921 case LibFunc_iprintf:
922 case LibFunc_small_printf:
923 case LibFunc_pclose:
924 case LibFunc_perror:
925 case LibFunc_printf:
926 case LibFunc_puts:
927 case LibFunc_uname:
928 case LibFunc_under_IO_getc:
929 case LibFunc_unlink:
930 case LibFunc_unsetenv:
931 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
932
933 case LibFunc_access:
934 case LibFunc_chmod:
935 case LibFunc_chown:
936 case LibFunc_clearerr:
937 case LibFunc_closedir:
938 case LibFunc_ctermid:
939 case LibFunc_fclose:
940 case LibFunc_feof:
941 case LibFunc_fflush:
942 case LibFunc_fgetc:
943 case LibFunc_fgetc_unlocked:
944 case LibFunc_fileno:
945 case LibFunc_flockfile:
946 case LibFunc_free:
947 case LibFunc_fseek:
948 case LibFunc_fseeko64:
949 case LibFunc_fseeko:
950 case LibFunc_fsetpos:
951 case LibFunc_ftell:
952 case LibFunc_ftello64:
953 case LibFunc_ftello:
954 case LibFunc_ftrylockfile:
955 case LibFunc_funlockfile:
956 case LibFunc_getc:
957 case LibFunc_getc_unlocked:
958 case LibFunc_getlogin_r:
959 case LibFunc_mkdir:
960 case LibFunc_mktime:
961 case LibFunc_times:
962 return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
963
964 case LibFunc_fopen:
965 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
966 FTy.getParamType(0)->isPointerTy() &&
967 FTy.getParamType(1)->isPointerTy());
968 case LibFunc_fork:
969 return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
970 case LibFunc_fdopen:
971 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
972 FTy.getParamType(1)->isPointerTy());
973 case LibFunc_fputc:
974 case LibFunc_fputc_unlocked:
975 case LibFunc_fstat:
976 case LibFunc_frexp:
977 case LibFunc_frexpf:
978 case LibFunc_frexpl:
979 case LibFunc_fstatvfs:
980 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
981 case LibFunc_fgets:
982 case LibFunc_fgets_unlocked:
983 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
984 FTy.getParamType(2)->isPointerTy());
985 case LibFunc_fread:
986 case LibFunc_fread_unlocked:
987 return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
988 FTy.getParamType(3)->isPointerTy());
989 case LibFunc_fwrite:
990 case LibFunc_fwrite_unlocked:
991 return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
992 FTy.getParamType(0)->isPointerTy() &&
993 FTy.getParamType(1)->isIntegerTy() &&
994 FTy.getParamType(2)->isIntegerTy() &&
995 FTy.getParamType(3)->isPointerTy());
996 case LibFunc_fputs:
997 case LibFunc_fputs_unlocked:
998 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
999 FTy.getParamType(1)->isPointerTy());
1000 case LibFunc_fscanf:
1001 case LibFunc_fiprintf:
1002 case LibFunc_small_fprintf:
1003 case LibFunc_fprintf:
1004 return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
1005 FTy.getParamType(0)->isPointerTy() &&
1006 FTy.getParamType(1)->isPointerTy());
1007 case LibFunc_fgetpos:
1008 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1009 FTy.getParamType(1)->isPointerTy());
1010 case LibFunc_getchar:
1011 case LibFunc_getchar_unlocked:
1012 return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
1013 case LibFunc_gets:
1014 return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
1015 case LibFunc_getitimer:
1016 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1017 case LibFunc_ungetc:
1018 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1019 case LibFunc_utime:
1020 case LibFunc_utimes:
1021 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1022 FTy.getParamType(1)->isPointerTy());
1023 case LibFunc_putc:
1024 case LibFunc_putc_unlocked:
1025 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1026 case LibFunc_pread:
1027 case LibFunc_pwrite:
1028 return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
1029 case LibFunc_popen:
1030 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1031 FTy.getParamType(0)->isPointerTy() &&
1032 FTy.getParamType(1)->isPointerTy());
1033 case LibFunc_vscanf:
1034 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1035 case LibFunc_vsscanf:
1036 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1037 FTy.getParamType(2)->isPointerTy());
1038 case LibFunc_vfscanf:
1039 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
1040 FTy.getParamType(2)->isPointerTy());
1041 case LibFunc_valloc:
1042 return (FTy.getReturnType()->isPointerTy());
1043 case LibFunc_vprintf:
1044 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1045 case LibFunc_vfprintf:
1046 case LibFunc_vsprintf:
1047 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
1048 FTy.getParamType(1)->isPointerTy());
1049 case LibFunc_vsprintf_chk:
1050 return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
1051 FTy.getParamType(1)->isIntegerTy(32) &&
1052 IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
1053 case LibFunc_vsnprintf:
1054 return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
1055 FTy.getParamType(2)->isPointerTy());
1056 case LibFunc_vsnprintf_chk:
1057 return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
1058 FTy.getParamType(2)->isIntegerTy(32) &&
1059 IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
1060 case LibFunc_open:
1061 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1062 case LibFunc_opendir:
1063 return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
1064 FTy.getParamType(0)->isPointerTy());
1065 case LibFunc_tmpfile:
1066 return (FTy.getReturnType()->isPointerTy());
1067 case LibFunc_htonl:
1068 case LibFunc_ntohl:
1069 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1070 FTy.getReturnType() == FTy.getParamType(0));
1071 case LibFunc_htons:
1072 case LibFunc_ntohs:
1073 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
1074 FTy.getReturnType() == FTy.getParamType(0));
1075 case LibFunc_lstat:
1076 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1077 FTy.getParamType(1)->isPointerTy());
1078 case LibFunc_lchown:
1079 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1080 case LibFunc_qsort:
1081 return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
1082 case LibFunc_dunder_strdup:
1083 case LibFunc_dunder_strndup:
1084 return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
1085 FTy.getParamType(0)->isPointerTy());
1086 case LibFunc_dunder_strtok_r:
1087 return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
1088 case LibFunc_under_IO_putc:
1089 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1090 case LibFunc_dunder_isoc99_scanf:
1091 return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
1092 case LibFunc_stat64:
1093 case LibFunc_lstat64:
1094 case LibFunc_statvfs64:
1095 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1096 FTy.getParamType(1)->isPointerTy());
1097 case LibFunc_dunder_isoc99_sscanf:
1098 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
1099 FTy.getParamType(1)->isPointerTy());
1100 case LibFunc_fopen64:
1101 return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
1102 FTy.getParamType(0)->isPointerTy() &&
1103 FTy.getParamType(1)->isPointerTy());
1104 case LibFunc_tmpfile64:
1105 return (FTy.getReturnType()->isPointerTy());
1106 case LibFunc_fstat64:
1107 case LibFunc_fstatvfs64:
1108 return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
1109 case LibFunc_open64:
1110 return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
1111 case LibFunc_gettimeofday:
1112 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
1113 FTy.getParamType(1)->isPointerTy());
1114
1115 // new(unsigned int);
1116 case LibFunc_Znwj:
1117 // new(unsigned long);
1118 case LibFunc_Znwm:
1119 // new[](unsigned int);
1120 case LibFunc_Znaj:
1121 // new[](unsigned long);
1122 case LibFunc_Znam:
1123 // new(unsigned int);
1124 case LibFunc_msvc_new_int:
1125 // new(unsigned long long);
1126 case LibFunc_msvc_new_longlong:
1127 // new[](unsigned int);
1128 case LibFunc_msvc_new_array_int:
1129 // new[](unsigned long long);
1130 case LibFunc_msvc_new_array_longlong:
1131 return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
1132
1133 // new(unsigned int, nothrow);
1134 case LibFunc_ZnwjRKSt9nothrow_t:
1135 // new(unsigned long, nothrow);
1136 case LibFunc_ZnwmRKSt9nothrow_t:
1137 // new[](unsigned int, nothrow);
1138 case LibFunc_ZnajRKSt9nothrow_t:
1139 // new[](unsigned long, nothrow);
1140 case LibFunc_ZnamRKSt9nothrow_t:
1141 // new(unsigned int, nothrow);
1142 case LibFunc_msvc_new_int_nothrow:
1143 // new(unsigned long long, nothrow);
1144 case LibFunc_msvc_new_longlong_nothrow:
1145 // new[](unsigned int, nothrow);
1146 case LibFunc_msvc_new_array_int_nothrow:
1147 // new[](unsigned long long, nothrow);
1148 case LibFunc_msvc_new_array_longlong_nothrow:
1149 // new(unsigned int, align_val_t)
1150 case LibFunc_ZnwjSt11align_val_t:
1151 // new(unsigned long, align_val_t)
1152 case LibFunc_ZnwmSt11align_val_t:
1153 // new[](unsigned int, align_val_t)
1154 case LibFunc_ZnajSt11align_val_t:
1155 // new[](unsigned long, align_val_t)
1156 case LibFunc_ZnamSt11align_val_t:
1157 return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
1158
1159 // new(unsigned int, align_val_t, nothrow)
1160 case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
1161 // new(unsigned long, align_val_t, nothrow)
1162 case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
1163 // new[](unsigned int, align_val_t, nothrow)
1164 case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
1165 // new[](unsigned long, align_val_t, nothrow)
1166 case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
1167 return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
1168
1169 // void operator delete[](void*);
1170 case LibFunc_ZdaPv:
1171 // void operator delete(void*);
1172 case LibFunc_ZdlPv:
1173 // void operator delete[](void*);
1174 case LibFunc_msvc_delete_array_ptr32:
1175 // void operator delete[](void*);
1176 case LibFunc_msvc_delete_array_ptr64:
1177 // void operator delete(void*);
1178 case LibFunc_msvc_delete_ptr32:
1179 // void operator delete(void*);
1180 case LibFunc_msvc_delete_ptr64:
1181 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1182
1183 // void operator delete[](void*, nothrow);
1184 case LibFunc_ZdaPvRKSt9nothrow_t:
1185 // void operator delete[](void*, unsigned int);
1186 case LibFunc_ZdaPvj:
1187 // void operator delete[](void*, unsigned long);
1188 case LibFunc_ZdaPvm:
1189 // void operator delete(void*, nothrow);
1190 case LibFunc_ZdlPvRKSt9nothrow_t:
1191 // void operator delete(void*, unsigned int);
1192 case LibFunc_ZdlPvj:
1193 // void operator delete(void*, unsigned long);
1194 case LibFunc_ZdlPvm:
1195 // void operator delete(void*, align_val_t)
1196 case LibFunc_ZdlPvSt11align_val_t:
1197 // void operator delete[](void*, align_val_t)
1198 case LibFunc_ZdaPvSt11align_val_t:
1199 // void operator delete[](void*, unsigned int);
1200 case LibFunc_msvc_delete_array_ptr32_int:
1201 // void operator delete[](void*, nothrow);
1202 case LibFunc_msvc_delete_array_ptr32_nothrow:
1203 // void operator delete[](void*, unsigned long long);
1204 case LibFunc_msvc_delete_array_ptr64_longlong:
1205 // void operator delete[](void*, nothrow);
1206 case LibFunc_msvc_delete_array_ptr64_nothrow:
1207 // void operator delete(void*, unsigned int);
1208 case LibFunc_msvc_delete_ptr32_int:
1209 // void operator delete(void*, nothrow);
1210 case LibFunc_msvc_delete_ptr32_nothrow:
1211 // void operator delete(void*, unsigned long long);
1212 case LibFunc_msvc_delete_ptr64_longlong:
1213 // void operator delete(void*, nothrow);
1214 case LibFunc_msvc_delete_ptr64_nothrow:
1215 return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
1216
1217 // void operator delete(void*, align_val_t, nothrow)
1218 case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
1219 // void operator delete[](void*, align_val_t, nothrow)
1220 case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
1221 // void operator delete(void*, unsigned int, align_val_t)
1222 case LibFunc_ZdlPvjSt11align_val_t:
1223 // void operator delete(void*, unsigned long, align_val_t)
1224 case LibFunc_ZdlPvmSt11align_val_t:
1225 // void operator delete[](void*, unsigned int, align_val_t);
1226 case LibFunc_ZdaPvjSt11align_val_t:
1227 // void operator delete[](void*, unsigned long, align_val_t);
1228 case LibFunc_ZdaPvmSt11align_val_t:
1229 return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
1230
1231 case LibFunc_memset_pattern16:
1232 return (!FTy.isVarArg() && NumParams == 3 &&
1233 FTy.getParamType(0)->isPointerTy() &&
1234 FTy.getParamType(1)->isPointerTy() &&
1235 FTy.getParamType(2)->isIntegerTy());
1236
1237 case LibFunc_cxa_guard_abort:
1238 case LibFunc_cxa_guard_acquire:
1239 case LibFunc_cxa_guard_release:
1240 case LibFunc_nvvm_reflect:
1241 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
1242
1243 case LibFunc_sincospi_stret:
1244 case LibFunc_sincospif_stret:
1245 return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
1246
1247 case LibFunc_acos:
1248 case LibFunc_acos_finite:
1249 case LibFunc_acosf:
1250 case LibFunc_acosf_finite:
1251 case LibFunc_acosh:
1252 case LibFunc_acosh_finite:
1253 case LibFunc_acoshf:
1254 case LibFunc_acoshf_finite:
1255 case LibFunc_acoshl:
1256 case LibFunc_acoshl_finite:
1257 case LibFunc_acosl:
1258 case LibFunc_acosl_finite:
1259 case LibFunc_asin:
1260 case LibFunc_asin_finite:
1261 case LibFunc_asinf:
1262 case LibFunc_asinf_finite:
1263 case LibFunc_asinh:
1264 case LibFunc_asinhf:
1265 case LibFunc_asinhl:
1266 case LibFunc_asinl:
1267 case LibFunc_asinl_finite:
1268 case LibFunc_atan:
1269 case LibFunc_atanf:
1270 case LibFunc_atanh:
1271 case LibFunc_atanh_finite:
1272 case LibFunc_atanhf:
1273 case LibFunc_atanhf_finite:
1274 case LibFunc_atanhl:
1275 case LibFunc_atanhl_finite:
1276 case LibFunc_atanl:
1277 case LibFunc_cbrt:
1278 case LibFunc_cbrtf:
1279 case LibFunc_cbrtl:
1280 case LibFunc_ceil:
1281 case LibFunc_ceilf:
1282 case LibFunc_ceill:
1283 case LibFunc_cos:
1284 case LibFunc_cosf:
1285 case LibFunc_cosh:
1286 case LibFunc_cosh_finite:
1287 case LibFunc_coshf:
1288 case LibFunc_coshf_finite:
1289 case LibFunc_coshl:
1290 case LibFunc_coshl_finite:
1291 case LibFunc_cosl:
1292 case LibFunc_exp10:
1293 case LibFunc_exp10_finite:
1294 case LibFunc_exp10f:
1295 case LibFunc_exp10f_finite:
1296 case LibFunc_exp10l:
1297 case LibFunc_exp10l_finite:
1298 case LibFunc_exp2:
1299 case LibFunc_exp2_finite:
1300 case LibFunc_exp2f:
1301 case LibFunc_exp2f_finite:
1302 case LibFunc_exp2l:
1303 case LibFunc_exp2l_finite:
1304 case LibFunc_exp:
1305 case LibFunc_exp_finite:
1306 case LibFunc_expf:
1307 case LibFunc_expf_finite:
1308 case LibFunc_expl:
1309 case LibFunc_expl_finite:
1310 case LibFunc_expm1:
1311 case LibFunc_expm1f:
1312 case LibFunc_expm1l:
1313 case LibFunc_fabs:
1314 case LibFunc_fabsf:
1315 case LibFunc_fabsl:
1316 case LibFunc_floor:
1317 case LibFunc_floorf:
1318 case LibFunc_floorl:
1319 case LibFunc_log10:
1320 case LibFunc_log10_finite:
1321 case LibFunc_log10f:
1322 case LibFunc_log10f_finite:
1323 case LibFunc_log10l:
1324 case LibFunc_log10l_finite:
1325 case LibFunc_log1p:
1326 case LibFunc_log1pf:
1327 case LibFunc_log1pl:
1328 case LibFunc_log2:
1329 case LibFunc_log2_finite:
1330 case LibFunc_log2f:
1331 case LibFunc_log2f_finite:
1332 case LibFunc_log2l:
1333 case LibFunc_log2l_finite:
1334 case LibFunc_log:
1335 case LibFunc_log_finite:
1336 case LibFunc_logb:
1337 case LibFunc_logbf:
1338 case LibFunc_logbl:
1339 case LibFunc_logf:
1340 case LibFunc_logf_finite:
1341 case LibFunc_logl:
1342 case LibFunc_logl_finite:
1343 case LibFunc_nearbyint:
1344 case LibFunc_nearbyintf:
1345 case LibFunc_nearbyintl:
1346 case LibFunc_rint:
1347 case LibFunc_rintf:
1348 case LibFunc_rintl:
1349 case LibFunc_round:
1350 case LibFunc_roundf:
1351 case LibFunc_roundl:
1352 case LibFunc_roundeven:
1353 case LibFunc_roundevenf:
1354 case LibFunc_roundevenl:
1355 case LibFunc_sin:
1356 case LibFunc_sinf:
1357 case LibFunc_sinh:
1358 case LibFunc_sinh_finite:
1359 case LibFunc_sinhf:
1360 case LibFunc_sinhf_finite:
1361 case LibFunc_sinhl:
1362 case LibFunc_sinhl_finite:
1363 case LibFunc_sinl:
1364 case LibFunc_sqrt:
1365 case LibFunc_sqrt_finite:
1366 case LibFunc_sqrtf:
1367 case LibFunc_sqrtf_finite:
1368 case LibFunc_sqrtl:
1369 case LibFunc_sqrtl_finite:
1370 case LibFunc_tan:
1371 case LibFunc_tanf:
1372 case LibFunc_tanh:
1373 case LibFunc_tanhf:
1374 case LibFunc_tanhl:
1375 case LibFunc_tanl:
1376 case LibFunc_trunc:
1377 case LibFunc_truncf:
1378 case LibFunc_truncl:
1379 return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
1380 FTy.getReturnType() == FTy.getParamType(0));
1381
1382 case LibFunc_atan2:
1383 case LibFunc_atan2_finite:
1384 case LibFunc_atan2f:
1385 case LibFunc_atan2f_finite:
1386 case LibFunc_atan2l:
1387 case LibFunc_atan2l_finite:
1388 case LibFunc_fmin:
1389 case LibFunc_fminf:
1390 case LibFunc_fminl:
1391 case LibFunc_fmax:
1392 case LibFunc_fmaxf:
1393 case LibFunc_fmaxl:
1394 case LibFunc_fmod:
1395 case LibFunc_fmodf:
1396 case LibFunc_fmodl:
1397 case LibFunc_remainder:
1398 case LibFunc_remainderf:
1399 case LibFunc_remainderl:
1400 case LibFunc_copysign:
1401 case LibFunc_copysignf:
1402 case LibFunc_copysignl:
1403 case LibFunc_pow:
1404 case LibFunc_pow_finite:
1405 case LibFunc_powf:
1406 case LibFunc_powf_finite:
1407 case LibFunc_powl:
1408 case LibFunc_powl_finite:
1409 return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1410 FTy.getReturnType() == FTy.getParamType(0) &&
1411 FTy.getReturnType() == FTy.getParamType(1));
1412
1413 case LibFunc_ldexp:
1414 case LibFunc_ldexpf:
1415 case LibFunc_ldexpl:
1416 return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
1417 FTy.getReturnType() == FTy.getParamType(0) &&
1418 FTy.getParamType(1)->isIntegerTy(32));
1419
1420 case LibFunc_ffs:
1421 case LibFunc_ffsl:
1422 case LibFunc_ffsll:
1423 case LibFunc_fls:
1424 case LibFunc_flsl:
1425 case LibFunc_flsll:
1426 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1427 FTy.getParamType(0)->isIntegerTy());
1428
1429 case LibFunc_isdigit:
1430 case LibFunc_isascii:
1431 case LibFunc_toascii:
1432 case LibFunc_putchar:
1433 case LibFunc_putchar_unlocked:
1434 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
1435 FTy.getReturnType() == FTy.getParamType(0));
1436
1437 case LibFunc_abs:
1438 case LibFunc_labs:
1439 case LibFunc_llabs:
1440 return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
1441 FTy.getReturnType() == FTy.getParamType(0));
1442
1443 case LibFunc_cxa_atexit:
1444 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
1445 FTy.getParamType(0)->isPointerTy() &&
1446 FTy.getParamType(1)->isPointerTy() &&
1447 FTy.getParamType(2)->isPointerTy());
1448
1449 case LibFunc_sinpi:
1450 case LibFunc_cospi:
1451 return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
1452 FTy.getReturnType() == FTy.getParamType(0));
1453
1454 case LibFunc_sinpif:
1455 case LibFunc_cospif:
1456 return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
1457 FTy.getReturnType() == FTy.getParamType(0));
1458
1459 case LibFunc_strnlen:
1460 return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
1461 FTy.getParamType(0) == PCharTy &&
1462 FTy.getParamType(1) == SizeTTy);
1463
1464 case LibFunc_posix_memalign:
1465 return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
1466 FTy.getParamType(0)->isPointerTy() &&
1467 FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
1468
1469 case LibFunc_wcslen:
1470 return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
1471 FTy.getReturnType()->isIntegerTy());
1472
1473 case LibFunc_cabs:
1474 case LibFunc_cabsf:
1475 case LibFunc_cabsl: {
1476 Type* RetTy = FTy.getReturnType();
1477 if (!RetTy->isFloatingPointTy())
1478 return false;
1479
1480 // NOTE: These prototypes are target specific and currently support
1481 // "complex" passed as an array or discrete real & imaginary parameters.
1482 // Add other calling conventions to enable libcall optimizations.
1483 if (NumParams == 1)
1484 return (FTy.getParamType(0)->isArrayTy() &&
1485 FTy.getParamType(0)->getArrayNumElements() == 2 &&
1486 FTy.getParamType(0)->getArrayElementType() == RetTy);
1487 else if (NumParams == 2)
1488 return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
1489 else
1490 return false;
1491 }
1492 case LibFunc::NumLibFuncs:
1493 case LibFunc::NotLibFunc:
1494 break;
1495 }
1496
1497 llvm_unreachable("Invalid libfunc");
1498 }
1499
getLibFunc(const Function & FDecl,LibFunc & F) const1500 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
1501 LibFunc &F) const {
1502 // Intrinsics don't overlap w/libcalls; if our module has a large number of
1503 // intrinsics, this ends up being an interesting compile time win since we
1504 // avoid string normalization and comparison.
1505 if (FDecl.isIntrinsic()) return false;
1506
1507 const DataLayout *DL =
1508 FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
1509 return getLibFunc(FDecl.getName(), F) &&
1510 isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
1511 }
1512
disableAllFunctions()1513 void TargetLibraryInfoImpl::disableAllFunctions() {
1514 memset(AvailableArray, 0, sizeof(AvailableArray));
1515 }
1516
compareByScalarFnName(const VecDesc & LHS,const VecDesc & RHS)1517 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
1518 return LHS.ScalarFnName < RHS.ScalarFnName;
1519 }
1520
compareByVectorFnName(const VecDesc & LHS,const VecDesc & RHS)1521 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
1522 return LHS.VectorFnName < RHS.VectorFnName;
1523 }
1524
compareWithScalarFnName(const VecDesc & LHS,StringRef S)1525 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
1526 return LHS.ScalarFnName < S;
1527 }
1528
compareWithVectorFnName(const VecDesc & LHS,StringRef S)1529 static bool compareWithVectorFnName(const VecDesc &LHS, StringRef S) {
1530 return LHS.VectorFnName < S;
1531 }
1532
addVectorizableFunctions(ArrayRef<VecDesc> Fns)1533 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
1534 VectorDescs.insert(VectorDescs.end(), Fns.begin(), Fns.end());
1535 llvm::sort(VectorDescs, compareByScalarFnName);
1536
1537 ScalarDescs.insert(ScalarDescs.end(), Fns.begin(), Fns.end());
1538 llvm::sort(ScalarDescs, compareByVectorFnName);
1539 }
1540
addVectorizableFunctionsFromVecLib(enum VectorLibrary VecLib)1541 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1542 enum VectorLibrary VecLib) {
1543 switch (VecLib) {
1544 case Accelerate: {
1545 const VecDesc VecFuncs[] = {
1546 #define TLI_DEFINE_ACCELERATE_VECFUNCS
1547 #include "llvm/Analysis/VecFuncs.def"
1548 };
1549 addVectorizableFunctions(VecFuncs);
1550 break;
1551 }
1552 case MASSV: {
1553 const VecDesc VecFuncs[] = {
1554 #define TLI_DEFINE_MASSV_VECFUNCS
1555 #include "llvm/Analysis/VecFuncs.def"
1556 };
1557 addVectorizableFunctions(VecFuncs);
1558 break;
1559 }
1560 case SVML: {
1561 const VecDesc VecFuncs[] = {
1562 #define TLI_DEFINE_SVML_VECFUNCS
1563 #include "llvm/Analysis/VecFuncs.def"
1564 };
1565 addVectorizableFunctions(VecFuncs);
1566 break;
1567 }
1568 case NoLibrary:
1569 break;
1570 }
1571 }
1572
isFunctionVectorizable(StringRef funcName) const1573 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
1574 funcName = sanitizeFunctionName(funcName);
1575 if (funcName.empty())
1576 return false;
1577
1578 std::vector<VecDesc>::const_iterator I =
1579 llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
1580 return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
1581 }
1582
getVectorizedFunction(StringRef F,unsigned VF) const1583 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
1584 unsigned VF) const {
1585 F = sanitizeFunctionName(F);
1586 if (F.empty())
1587 return F;
1588 std::vector<VecDesc>::const_iterator I =
1589 llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
1590 while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
1591 if (I->VectorizationFactor == VF)
1592 return I->VectorFnName;
1593 ++I;
1594 }
1595 return StringRef();
1596 }
1597
getScalarizedFunction(StringRef F,unsigned & VF) const1598 StringRef TargetLibraryInfoImpl::getScalarizedFunction(StringRef F,
1599 unsigned &VF) const {
1600 F = sanitizeFunctionName(F);
1601 if (F.empty())
1602 return F;
1603
1604 std::vector<VecDesc>::const_iterator I =
1605 llvm::lower_bound(ScalarDescs, F, compareWithVectorFnName);
1606 if (I == VectorDescs.end() || StringRef(I->VectorFnName) != F)
1607 return StringRef();
1608 VF = I->VectorizationFactor;
1609 return I->ScalarFnName;
1610 }
1611
run(const Function & F,FunctionAnalysisManager &)1612 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
1613 FunctionAnalysisManager &) {
1614 if (!BaselineInfoImpl)
1615 BaselineInfoImpl =
1616 TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
1617 return TargetLibraryInfo(*BaselineInfoImpl, &F);
1618 }
1619
getWCharSize(const Module & M) const1620 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
1621 if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
1622 M.getModuleFlag("wchar_size")))
1623 return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
1624 return 0;
1625 }
1626
TargetLibraryInfoWrapperPass()1627 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
1628 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
1629 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1630 }
1631
TargetLibraryInfoWrapperPass(const Triple & T)1632 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
1633 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
1634 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1635 }
1636
TargetLibraryInfoWrapperPass(const TargetLibraryInfoImpl & TLIImpl)1637 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
1638 const TargetLibraryInfoImpl &TLIImpl)
1639 : ImmutablePass(ID), TLA(TLIImpl) {
1640 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
1641 }
1642
1643 AnalysisKey TargetLibraryAnalysis::Key;
1644
1645 // Register the basic pass.
1646 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
1647 "Target Library Information", false, true)
1648 char TargetLibraryInfoWrapperPass::ID = 0;
1649
anchor()1650 void TargetLibraryInfoWrapperPass::anchor() {}
1651
getWidestVF(StringRef ScalarF) const1652 unsigned TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF) const {
1653 ScalarF = sanitizeFunctionName(ScalarF);
1654 if (ScalarF.empty())
1655 return 1;
1656
1657 unsigned VF = 1;
1658 std::vector<VecDesc>::const_iterator I =
1659 llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
1660 while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
1661 if (I->VectorizationFactor > VF)
1662 VF = I->VectorizationFactor;
1663 ++I;
1664 }
1665 return VF;
1666 }
1667