Let the alpha breakage begin.  First Formals and RET.  next Calls

llvm-svn: 28753
diff --git a/llvm/lib/Target/Alpha/AlphaInstrFormats.td b/llvm/lib/Target/Alpha/AlphaInstrFormats.td
index 6635629..3f6e6495 100644
--- a/llvm/lib/Target/Alpha/AlphaInstrFormats.td
+++ b/llvm/lib/Target/Alpha/AlphaInstrFormats.td
@@ -75,6 +75,20 @@
   let Inst{15-14} = TB;
   let Inst{13-0} = disp;
 }
+class MbrpForm<bits<6> opcode, bits<2> TB, dag OL, string asmstr, list<dag> pattern, InstrItinClass itin>
+    : InstAlpha<opcode, asmstr, itin> {
+  let Pattern=pattern;
+  bits<5> Ra;
+  bits<5> Rb;
+  bits<14> disp;
+
+  let OperandList = OL;
+
+  let Inst{25-21} = Ra;
+  let Inst{20-16} = Rb;
+  let Inst{15-14} = TB;
+  let Inst{13-0} = disp;
+}
 
 //3.3.2
 def target : Operand<OtherVT> {}