static bool isTargetTooNew(const llvm::Triple &moduleTarget,
const llvm::Triple &ctxTarget) {
unsigned major, minor, micro;
if (moduleTarget.isMacOSX()) {
moduleTarget.getMacOSXVersion(major, minor, micro);
return ctxTarget.isMacOSXVersionLT(major, minor, micro);
}
moduleTarget.getOSVersion(major, minor, micro);
return ctxTarget.isOSVersionLT(major, minor, micro);
}
/// Returns true if the compiler depends on features provided by the ObjC
/// runtime that are not present on the deployment target indicated by
/// \p triple.
static bool wantsObjCRuntime(const llvm::Triple &triple) {
assert((!triple.isTvOS() || triple.isiOS()) &&
"tvOS is considered a kind of iOS");
// When updating the versions listed here, please record the most recent
// feature being depended on and when it was introduced:
//
// - The hook to override class_getImageName (macOS 10.14 and equivalent)
if (triple.isiOS())
return triple.isOSVersionLT(12);
if (triple.isMacOSX())
return triple.isMacOSXVersionLT(10, 14);
if (triple.isWatchOS())
return triple.isOSVersionLT(5);
llvm_unreachable("unknown Darwin OS");
}
/// Returns true if the compiler depends on features provided by the ObjC
/// runtime that are not present on the deployment target indicated by
/// \p triple.
static bool wantsObjCRuntime(const llvm::Triple &triple) {
assert((!triple.isTvOS() || triple.isiOS()) &&
"tvOS is considered a kind of iOS");
// When updating the versions listed here, please record the most recent
// feature being depended on and when it was introduced:
//
// - Make assigning 'nil' to an NSMutableDictionary subscript delete the
// entry, like it does for Swift.Dictionary, rather than trap.
if (triple.isiOS())
return triple.isOSVersionLT(9);
if (triple.isMacOSX())
return triple.isMacOSXVersionLT(10, 11);
if (triple.isWatchOS())
return false;
llvm_unreachable("unknown Darwin OS");
}
static bool supportsNilWithFloatRet(const llvm::Triple &triple) {
return triple.getVendor() == llvm::Triple::Apple &&
(!triple.isMacOSXVersionLT(10,5) ||
triple.getArch() == llvm::Triple::arm ||
triple.getArch() == llvm::Triple::thumb);
}
static bool supportsNilWithFloatRet(const llvm::Triple &triple) {
return (triple.getVendor() == llvm::Triple::Apple &&
(triple.isiOS() || !triple.isMacOSXVersionLT(10,5)));
}