[llvm-commits] [llvm] r129801 - /llvm/trunk/include/llvm/ADT/Triple.h

[Daniel Dunbar]

Author: ddunbar
Date: Tue Apr 19 15:30:10 2011
New Revision: 129801

URL: http://llvm.org/viewvc/llvm-project?rev=129801&view=rev
Log:
ADT/Triple: Add helper function for OS X version checks.

Modified:
    llvm/trunk/include/llvm/ADT/Triple.h

Modified: llvm/trunk/include/llvm/ADT/Triple.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/Triple.h?rev=129801&r1=129800&r2=129801&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/Triple.h (original)
+++ llvm/trunk/include/llvm/ADT/Triple.h Tue Apr 19 15:30:10 2011
@@ -249,7 +249,8 @@
     return getOSMajorVersion();
   }
 
-  bool isOSVersionLT(unsigned Major, unsigned B_Minor, unsigned Micro) {
+  bool isOSVersionLT(unsigned Major, unsigned Minor = 0,
+                     unsigned Micro = 0) const {
     unsigned LHS[3];
     getOSVersion(LHS[0], LHS[1], LHS[2]);
 
@@ -263,6 +264,28 @@
     return false;
   }
 
+  /// isOSX - Is this an OS X triple. For legacy reasons, we support both
+  /// "darwin" and "osx" as OS X triples.
+  bool isOSX() const {
+    return getOS() == Triple::Darwin || getOS() == Triple::OSX;
+  }
+
+  /// isOSXVersionLT - Comparison function for checking OS X version
+  /// compatibility, which handles supporting skewed version numbering schemes
+  /// used by the "darwin" triples.
+  unsigned isOSXVersionLT(unsigned Major, unsigned Minor = 0,
+                          unsigned Micro = 0) const {
+    assert(isOSX() && "Not an OS X triple!");
+
+    // If this is OS X, expect a sane version number.
+    if (getOS() == Triple::OSX)
+      return isOSVersionLT(Major, Minor, Micro);
+
+    // Otherwise, compare to the "Darwin" number.
+    assert(Major == 10 && "Unexpected major version");
+    return isOSVersionLT(Minor + 4, Micro, 0);
+  }
+    
   /// @}
   /// @name Mutators
   /// @{