+ StringRef getOSAndEnvironmentName() const;
+
+ /// getOSVersion - Parse the version number from the OS name component of the
+ /// triple, if present.
+ ///
+ /// For example, "fooos1.2.3" would return (1, 2, 3).
+ ///
+ /// If an entry is not defined, it will be returned as 0.
+ void getOSVersion(unsigned &Major, unsigned &Minor, unsigned &Micro) const;
+
+ /// getOSMajorVersion - Return just the major version number, this is
+ /// specialized because it is a common query.
+ unsigned getOSMajorVersion() const {
+ unsigned Maj, Min, Micro;
+ getOSVersion(Maj, Min, Micro);
+ return Maj;
+ }
+
+ /// isOSVersionLT - Helper function for doing comparisons against version
+ /// numbers included in the target triple.
+ bool isOSVersionLT(unsigned Major, unsigned Minor = 0,
+ unsigned Micro = 0) const {
+ unsigned LHS[3];
+ getOSVersion(LHS[0], LHS[1], LHS[2]);
+
+ if (LHS[0] != Major)
+ return LHS[0] < Major;
+ if (LHS[1] != Minor)
+ return LHS[1] < Minor;
+ if (LHS[2] != Micro)
+ return LHS[1] < Micro;
+
+ return false;
+ }
+
+ /// isMacOSX - Is this a Mac OS X triple. For legacy reasons, we support both
+ /// "darwin" and "osx" as OS X triples.
+ bool isMacOSX() const {
+ return getOS() == Triple::Darwin || getOS() == Triple::MacOSX;
+ }
+
+ /// isOSDarwin - Is this a "Darwin" OS (OS X or iOS).
+ bool isOSDarwin() const {
+ return isMacOSX() || getOS() == Triple::IOS;
+ }
+
+ /// isOSWindows - Is this a "Windows" OS.
+ bool isOSWindows() const {
+ return getOS() == Triple::Win32 || getOS() == Triple::Cygwin ||
+ getOS() == Triple::MinGW32;
+ }
+
+ /// isMacOSXVersionLT - Comparison function for checking OS X version
+ /// compatibility, which handles supporting skewed version numbering schemes
+ /// used by the "darwin" triples.
+ unsigned isMacOSXVersionLT(unsigned Major, unsigned Minor = 0,
+ unsigned Micro = 0) const {
+ assert(isMacOSX() && "Not an OS X triple!");
+
+ // If this is OS X, expect a sane version number.
+ if (getOS() == Triple::MacOSX)
+ return isOSVersionLT(Major, Minor, Micro);
+
+ // Otherwise, compare to the "Darwin" number.
+ assert(Major == 10 && "Unexpected major version");
+ return isOSVersionLT(Minor + 4, Micro, 0);
+ }