1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the TargetLibraryInfo class.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Target/TargetLibraryInfo.h"
15 #include "llvm/ADT/Triple.h"
18 // Register the default implementation.
19 INITIALIZE_PASS(TargetLibraryInfo, "targetlibinfo",
20 "Target Library Information", false, true)
21 char TargetLibraryInfo::ID = 0;
23 void TargetLibraryInfo::anchor() { }
25 const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
30 "_ZnajRKSt9nothrow_t",
32 "_ZnamRKSt9nothrow_t",
34 "_ZnwjRKSt9nothrow_t",
36 "_ZnwmRKSt9nothrow_t",
39 "__cxa_guard_acquire",
40 "__cxa_guard_release",
203 /// initialize - Initialize the set of available library functions based on the
204 /// specified target triple. This should be carefully written so that a missing
205 /// target triple gets a sane set of defaults.
206 static void initialize(TargetLibraryInfo &TLI, const Triple &T,
207 const char **StandardNames) {
208 initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
211 // Verify that the StandardNames array is in alphabetical order.
212 for (unsigned F = 1; F < LibFunc::NumLibFuncs; ++F) {
213 if (strcmp(StandardNames[F-1], StandardNames[F]) >= 0)
214 llvm_unreachable("TargetLibraryInfo function names must be sorted");
218 // memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later.
220 if (T.isMacOSXVersionLT(10, 5))
221 TLI.setUnavailable(LibFunc::memset_pattern16);
222 } else if (T.getOS() == Triple::IOS) {
223 if (T.isOSVersionLT(3, 0))
224 TLI.setUnavailable(LibFunc::memset_pattern16);
226 TLI.setUnavailable(LibFunc::memset_pattern16);
229 if (T.isMacOSX() && T.getArch() == Triple::x86 &&
230 !T.isMacOSXVersionLT(10, 7)) {
231 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
232 // we don't care about) have two versions; on recent OSX, the one we want
233 // has a $UNIX2003 suffix. The two implementations are identical except
234 // for the return value in some edge cases. However, we don't want to
235 // generate code that depends on the old symbols.
236 TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
237 TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
240 // iprintf and friends are only available on XCore and TCE.
241 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
242 TLI.setUnavailable(LibFunc::iprintf);
243 TLI.setUnavailable(LibFunc::siprintf);
244 TLI.setUnavailable(LibFunc::fiprintf);
247 if (T.getOS() == Triple::Win32) {
248 // Win32 does not support long double
249 TLI.setUnavailable(LibFunc::acosl);
250 TLI.setUnavailable(LibFunc::asinl);
251 TLI.setUnavailable(LibFunc::atanl);
252 TLI.setUnavailable(LibFunc::atan2l);
253 TLI.setUnavailable(LibFunc::ceill);
254 TLI.setUnavailable(LibFunc::copysignl);
255 TLI.setUnavailable(LibFunc::cosl);
256 TLI.setUnavailable(LibFunc::coshl);
257 TLI.setUnavailable(LibFunc::expl);
258 TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
259 TLI.setUnavailable(LibFunc::fabsl);
260 TLI.setUnavailable(LibFunc::floorl);
261 TLI.setUnavailable(LibFunc::fmodl);
262 TLI.setUnavailable(LibFunc::logl);
263 TLI.setUnavailable(LibFunc::powl);
264 TLI.setUnavailable(LibFunc::sinl);
265 TLI.setUnavailable(LibFunc::sinhl);
266 TLI.setUnavailable(LibFunc::sqrtl);
267 TLI.setUnavailable(LibFunc::tanl);
268 TLI.setUnavailable(LibFunc::tanhl);
270 // Win32 only has C89 math
271 TLI.setUnavailable(LibFunc::acosh);
272 TLI.setUnavailable(LibFunc::acoshf);
273 TLI.setUnavailable(LibFunc::acoshl);
274 TLI.setUnavailable(LibFunc::asinh);
275 TLI.setUnavailable(LibFunc::asinhf);
276 TLI.setUnavailable(LibFunc::asinhl);
277 TLI.setUnavailable(LibFunc::atanh);
278 TLI.setUnavailable(LibFunc::atanhf);
279 TLI.setUnavailable(LibFunc::atanhl);
280 TLI.setUnavailable(LibFunc::cbrt);
281 TLI.setUnavailable(LibFunc::cbrtf);
282 TLI.setUnavailable(LibFunc::cbrtl);
283 TLI.setUnavailable(LibFunc::exp10);
284 TLI.setUnavailable(LibFunc::exp10f);
285 TLI.setUnavailable(LibFunc::exp10l);
286 TLI.setUnavailable(LibFunc::exp2);
287 TLI.setUnavailable(LibFunc::exp2f);
288 TLI.setUnavailable(LibFunc::exp2l);
289 TLI.setUnavailable(LibFunc::expm1);
290 TLI.setUnavailable(LibFunc::expm1f);
291 TLI.setUnavailable(LibFunc::expm1l);
292 TLI.setUnavailable(LibFunc::log2);
293 TLI.setUnavailable(LibFunc::log2f);
294 TLI.setUnavailable(LibFunc::log2l);
295 TLI.setUnavailable(LibFunc::log1p);
296 TLI.setUnavailable(LibFunc::log1pf);
297 TLI.setUnavailable(LibFunc::log1pl);
298 TLI.setUnavailable(LibFunc::logb);
299 TLI.setUnavailable(LibFunc::logbf);
300 TLI.setUnavailable(LibFunc::logbl);
301 TLI.setUnavailable(LibFunc::nearbyint);
302 TLI.setUnavailable(LibFunc::nearbyintf);
303 TLI.setUnavailable(LibFunc::nearbyintl);
304 TLI.setUnavailable(LibFunc::rint);
305 TLI.setUnavailable(LibFunc::rintf);
306 TLI.setUnavailable(LibFunc::rintl);
307 TLI.setUnavailable(LibFunc::round);
308 TLI.setUnavailable(LibFunc::roundf);
309 TLI.setUnavailable(LibFunc::roundl);
310 TLI.setUnavailable(LibFunc::trunc);
311 TLI.setUnavailable(LibFunc::truncf);
312 TLI.setUnavailable(LibFunc::truncl);
314 // Win32 provides some C99 math with mangled names
315 TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
317 if (T.getArch() == Triple::x86) {
318 // Win32 on x86 implements single-precision math functions as macros
319 TLI.setUnavailable(LibFunc::acosf);
320 TLI.setUnavailable(LibFunc::asinf);
321 TLI.setUnavailable(LibFunc::atanf);
322 TLI.setUnavailable(LibFunc::atan2f);
323 TLI.setUnavailable(LibFunc::ceilf);
324 TLI.setUnavailable(LibFunc::copysignf);
325 TLI.setUnavailable(LibFunc::cosf);
326 TLI.setUnavailable(LibFunc::coshf);
327 TLI.setUnavailable(LibFunc::expf);
328 TLI.setUnavailable(LibFunc::floorf);
329 TLI.setUnavailable(LibFunc::fmodf);
330 TLI.setUnavailable(LibFunc::logf);
331 TLI.setUnavailable(LibFunc::powf);
332 TLI.setUnavailable(LibFunc::sinf);
333 TLI.setUnavailable(LibFunc::sinhf);
334 TLI.setUnavailable(LibFunc::sqrtf);
335 TLI.setUnavailable(LibFunc::tanf);
336 TLI.setUnavailable(LibFunc::tanhf);
339 // Win32 does *not* provide stpcpy. It is provided on POSIX systems:
340 // http://pubs.opengroup.org/onlinepubs/9699919799/functions/stpcpy.html
341 TLI.setUnavailable(LibFunc::stpcpy);
343 // Win32 does *not* provide ffs. It is provided on POSIX systems:
344 // http://pubs.opengroup.org/onlinepubs/009695399/functions/ffs.html
345 TLI.setUnavailable(LibFunc::ffs);
347 // Win32 does *not* provide llabs. It is defined in ISO/IEC 9899:1999,
348 // but Visual C++ does not support it.
349 TLI.setUnavailable(LibFunc::llabs);
352 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
354 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
355 // http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsl.c
356 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
361 case Triple::FreeBSD:
365 TLI.setUnavailable(LibFunc::ffsl);
368 // ffsll is available on at least FreeBSD and Linux (GLIBC):
369 // http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsll.c
370 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
372 case Triple::FreeBSD:
376 TLI.setUnavailable(LibFunc::ffsll);
381 TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) {
382 // Default to everything being available.
383 memset(AvailableArray, -1, sizeof(AvailableArray));
385 initialize(*this, Triple(), StandardNames);
388 TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
389 // Default to everything being available.
390 memset(AvailableArray, -1, sizeof(AvailableArray));
392 initialize(*this, T, StandardNames);
395 TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
396 : ImmutablePass(ID) {
397 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
398 CustomNames = TLI.CustomNames;
401 bool TargetLibraryInfo::getLibFunc(StringRef funcName,
402 LibFunc::Func &F) const {
403 const char **Start = &StandardNames[0];
404 const char **End = &StandardNames[LibFunc::NumLibFuncs];
405 const char **I = std::lower_bound(Start, End, funcName);
406 if (I != End && *I == funcName) {
407 F = (LibFunc::Func)(I - Start);
413 /// disableAllFunctions - This disables all builtins, which is used for options
414 /// like -fno-builtin.
415 void TargetLibraryInfo::disableAllFunctions() {
416 memset(AvailableArray, 0, sizeof(AvailableArray));