Temporay hook to enable register scavening for specific targets only.

[oota-llvm.git] / include / llvm / Target / MRegisterInfo.h

diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h
index 3e38ccc6c79b806411e09ab70ee4ab490eb4dddc..96bd0e9cdcd2972d9fa4a8a157e3aab04300b22e 100644 (file)
--- a/include/llvm/Target/MRegisterInfo.h
+++ b/include/llvm/Target/MRegisterInfo.h
@@ -391,6 +391,12 @@ public:
     return false;
   }
 
+  /// requiresRegisterScavenging - returns true if the target requires (and
+  /// can make use of) the register scavenger.
+  virtual bool requiresRegisterScavenging() const {
+    return false;
+  }
+  
   /// hasFP - Return true if the specified function should have a dedicated frame
   /// pointer register. For most targets this is true only if the function has
   /// variable sized allocas or if frame pointer elimination is disabled.
@@ -470,14 +476,6 @@ public:
   /// address can be found.
   virtual unsigned getRARegister() const = 0;
   
-  /// getEHExceptionRegister - This method should return the register containing
-  /// the address of the exception info on entry to a landing pad.
-  virtual unsigned getEHExceptionRegister() const = 0;
-  
-  /// getEHHandlerRegister - This method should return the register containing
-  /// the switch table selection on entry to an landing pad.
-  virtual unsigned getEHHandlerRegister() const = 0;
-
   /// getLocation - This method should return the actual location of a frame
   /// variable given the frame index.  The location is returned in ML.
   /// Subclasses should override this method for special handling of frame