+ switch (T.getOS()) {
+ case Triple::MacOSX:
+ // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
+ // and their names are __exp10 and __exp10f. exp10l is not available on
+ // OS X or iOS.
+ TLI.setUnavailable(LibFunc::exp10l);
+ if (T.isMacOSXVersionLT(10, 9)) {
+ TLI.setUnavailable(LibFunc::exp10);
+ TLI.setUnavailable(LibFunc::exp10f);
+ } else {
+ TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
+ TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
+ }
+ break;
+ case Triple::IOS:
+ TLI.setUnavailable(LibFunc::exp10l);
+ if (T.isOSVersionLT(7, 0)) {
+ TLI.setUnavailable(LibFunc::exp10);
+ TLI.setUnavailable(LibFunc::exp10f);
+ } else {
+ TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
+ TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
+ }
+ break;
+ case Triple::Linux:
+ // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
+ // buggy prior to glibc version 2.18. Until this version is widely deployed
+ // or we have a reasonable detection strategy, we cannot use exp10 reliably
+ // on Linux.
+ //
+ // Fall through to disable all of them.
+ default:
+ TLI.setUnavailable(LibFunc::exp10);
+ TLI.setUnavailable(LibFunc::exp10f);
+ TLI.setUnavailable(LibFunc::exp10l);
+ }
+