Implement RETURNADDR and FRAMEADDR lowering in SPARC backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123310 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcISelLowering.h b/lib/Target/Sparc/SparcISelLowering.h
index db39e08..8b2be7a 100644
--- a/lib/Target/Sparc/SparcISelLowering.h
+++ b/lib/Target/Sparc/SparcISelLowering.h
@@ -36,7 +36,8 @@
 
       CALL,        // A call instruction.
       RET_FLAG,    // Return with a flag operand.
-      GLOBAL_BASE_REG // Global base reg for PIC
+      GLOBAL_BASE_REG, // Global base reg for PIC
+      FLUSH        // FLUSH registers to stack
     };
   }