Switch Alpha over to the new call lowering style.  New code mostly 
copied from the SystemZ target.  I don't think this causes any 
significant changes to the output (I compared the assembly, and the 
results appeared to be essentially unchanged), although I don't actually 
have an Alpha to test on.

I would appreciate if anyone with the appropriate hardware could test 
this. I'm not sure if that includes anyone subscribed to llvm-commits, 
though.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76353 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelLowering.h b/lib/Target/Alpha/AlphaISelLowering.h
index 4925367..098c33f 100644
--- a/lib/Target/Alpha/AlphaISelLowering.h
+++ b/lib/Target/Alpha/AlphaISelLowering.h
@@ -82,13 +82,9 @@
     // Friendly names for dumps
     const char *getTargetNodeName(unsigned Opcode) const;
 
-    /// LowerCallTo - This hook lowers an abstract call to a function into an
-    /// actual call.
-    virtual std::pair<SDValue, SDValue>
-    LowerCallTo(SDValue Chain, const Type *RetTy, bool RetSExt, bool RetZExt,
-                bool isVarArg, bool isInreg, unsigned NumFixedArgs, unsigned CC,
-                bool isTailCall, SDValue Callee, ArgListTy &Args,
-                SelectionDAG &DAG, DebugLoc dl);
+    SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
+    SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
+                            unsigned CallingConv, SelectionDAG &DAG);
 
     ConstraintType getConstraintType(const std::string &Constraint) const;