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] =
135 "__cxa_guard_acquire",
136 "__cxa_guard_release",
140 /// initialize - Initialize the set of available library functions based on the
141 /// specified target triple. This should be carefully written so that a missing
142 /// target triple gets a sane set of defaults.
143 static void initialize(TargetLibraryInfo &TLI, const Triple &T) {
144 initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
147 // memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later.
149 if (T.isMacOSXVersionLT(10, 5))
150 TLI.setUnavailable(LibFunc::memset_pattern16);
151 } else if (T.getOS() == Triple::IOS) {
152 if (T.isOSVersionLT(3, 0))
153 TLI.setUnavailable(LibFunc::memset_pattern16);
155 TLI.setUnavailable(LibFunc::memset_pattern16);
158 if (T.isMacOSX() && T.getArch() == Triple::x86 &&
159 !T.isMacOSXVersionLT(10, 7)) {
160 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
161 // we don't care about) have two versions; on recent OSX, the one we want
162 // has a $UNIX2003 suffix. The two implementations are identical except
163 // for the return value in some edge cases. However, we don't want to
164 // generate code that depends on the old symbols.
165 TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
166 TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
169 // iprintf and friends are only available on XCore and TCE.
170 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
171 TLI.setUnavailable(LibFunc::iprintf);
172 TLI.setUnavailable(LibFunc::siprintf);
173 TLI.setUnavailable(LibFunc::fiprintf);
176 if (T.getOS() == Triple::Win32) {
177 // Win32 does not support long double
178 TLI.setUnavailable(LibFunc::acosl);
179 TLI.setUnavailable(LibFunc::asinl);
180 TLI.setUnavailable(LibFunc::atanl);
181 TLI.setUnavailable(LibFunc::atan2l);
182 TLI.setUnavailable(LibFunc::ceill);
183 TLI.setUnavailable(LibFunc::copysignl);
184 TLI.setUnavailable(LibFunc::cosl);
185 TLI.setUnavailable(LibFunc::coshl);
186 TLI.setUnavailable(LibFunc::expl);
187 TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
188 TLI.setUnavailable(LibFunc::fabsl);
189 TLI.setUnavailable(LibFunc::floorl);
190 TLI.setUnavailable(LibFunc::fmodl);
191 TLI.setUnavailable(LibFunc::logl);
192 TLI.setUnavailable(LibFunc::powl);
193 TLI.setUnavailable(LibFunc::sinl);
194 TLI.setUnavailable(LibFunc::sinhl);
195 TLI.setUnavailable(LibFunc::sqrtl);
196 TLI.setUnavailable(LibFunc::tanl);
197 TLI.setUnavailable(LibFunc::tanhl);
199 // Win32 only has C89 math
200 TLI.setUnavailable(LibFunc::exp2);
201 TLI.setUnavailable(LibFunc::exp2f);
202 TLI.setUnavailable(LibFunc::exp2l);
203 TLI.setUnavailable(LibFunc::expm1);
204 TLI.setUnavailable(LibFunc::expm1f);
205 TLI.setUnavailable(LibFunc::expm1l);
206 TLI.setUnavailable(LibFunc::log2);
207 TLI.setUnavailable(LibFunc::log2f);
208 TLI.setUnavailable(LibFunc::log2l);
209 TLI.setUnavailable(LibFunc::log1p);
210 TLI.setUnavailable(LibFunc::log1pf);
211 TLI.setUnavailable(LibFunc::log1pl);
212 TLI.setUnavailable(LibFunc::nearbyint);
213 TLI.setUnavailable(LibFunc::nearbyintf);
214 TLI.setUnavailable(LibFunc::nearbyintl);
215 TLI.setUnavailable(LibFunc::rint);
216 TLI.setUnavailable(LibFunc::rintf);
217 TLI.setUnavailable(LibFunc::rintl);
218 TLI.setUnavailable(LibFunc::round);
219 TLI.setUnavailable(LibFunc::roundf);
220 TLI.setUnavailable(LibFunc::roundl);
221 TLI.setUnavailable(LibFunc::trunc);
222 TLI.setUnavailable(LibFunc::truncf);
223 TLI.setUnavailable(LibFunc::truncl);
225 // Win32 provides some C99 math with mangled names
226 TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
228 if (T.getArch() == Triple::x86) {
229 // Win32 on x86 implements single-precision math functions as macros
230 TLI.setUnavailable(LibFunc::acosf);
231 TLI.setUnavailable(LibFunc::asinf);
232 TLI.setUnavailable(LibFunc::atanf);
233 TLI.setUnavailable(LibFunc::atan2f);
234 TLI.setUnavailable(LibFunc::ceilf);
235 TLI.setUnavailable(LibFunc::copysignf);
236 TLI.setUnavailable(LibFunc::cosf);
237 TLI.setUnavailable(LibFunc::coshf);
238 TLI.setUnavailable(LibFunc::expf);
239 TLI.setUnavailable(LibFunc::floorf);
240 TLI.setUnavailable(LibFunc::fmodf);
241 TLI.setUnavailable(LibFunc::logf);
242 TLI.setUnavailable(LibFunc::powf);
243 TLI.setUnavailable(LibFunc::sinf);
244 TLI.setUnavailable(LibFunc::sinhf);
245 TLI.setUnavailable(LibFunc::sqrtf);
246 TLI.setUnavailable(LibFunc::tanf);
247 TLI.setUnavailable(LibFunc::tanhf);
253 TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) {
254 // Default to everything being available.
255 memset(AvailableArray, -1, sizeof(AvailableArray));
257 initialize(*this, Triple());
260 TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
261 // Default to everything being available.
262 memset(AvailableArray, -1, sizeof(AvailableArray));
264 initialize(*this, T);
267 TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
268 : ImmutablePass(ID) {
269 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
270 CustomNames = TLI.CustomNames;
274 /// disableAllFunctions - This disables all builtins, which is used for options
275 /// like -fno-builtin.
276 void TargetLibraryInfo::disableAllFunctions() {
277 memset(AvailableArray, 0, sizeof(AvailableArray));