1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index 29f96e9..9cd8489 100644
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -484,6 +484,15 @@ public:
     return 0;
   }
 
+  /// getMatchingSuperRegClass - Return a subclass of the specified register
+  /// class A so that each register in it has a sub-register of the
+  /// specified sub-register index which is in the specified register class B.
+  virtual const TargetRegisterClass *
+  getMatchingSuperRegClass(const TargetRegisterClass *A,
+                           const TargetRegisterClass *B, unsigned Idx) const {
+    return 0;
+  }
+
   //===--------------------------------------------------------------------===//
   // Register Class Information
   //