Describe the magic numbers returned by getEHDataRegisterNumber.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262837 91177308-0d34-0410-b5e6-96231b3b80d8
aardappel · Mar 7, 2016 · 4d0b070 · 4d0b070
1 parent 298821f
commit 4d0b070
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
@@ -873,6 +873,8 @@ class TargetInfo : public RefCountedBase<TargetInfo> {
 
   /// \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;
   }