r262837 - Describe the magic numbers returned by getEHDataRegisterNumber.

[Joerg Sonnenberger via cfe-commits]

Author: joerg
Date: Mon Mar  7 11:18:41 2016
New Revision: 262837

URL: http://llvm.org/viewvc/llvm-project?rev=262837&view=rev
Log:
Describe the magic numbers returned by getEHDataRegisterNumber.

Modified:
    cfe/trunk/include/clang/Basic/TargetInfo.h

Modified: cfe/trunk/include/clang/Basic/TargetInfo.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/TargetInfo.h?rev=262837&r1=262836&r2=262837&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/TargetInfo.h (original)
+++ cfe/trunk/include/clang/Basic/TargetInfo.h Mon Mar  7 11:18:41 2016
@@ -873,6 +873,8 @@ public:
 
   /// \brief Return the register number that __builtin_eh_return_regno would
   /// return with the specified argument.
+  /// This corresponds with TargetLowering's getExceptionPointerRegister
+  /// and getExceptionSelectorRegister in the backend.
   virtual int getEHDataRegisterNumber(unsigned RegNo) const {
     return -1;
   }