Added support for PIC code with "explicit relocations" *only*.

Removed all macro code for PIC (goodbye "la").
Support tested with shootout bench.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43697 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MipsISelLowering.h

@@ -38,13 +38,7 @@ namespace llvm {
       Lo, 
 
       // Return 
-      Ret,
-
-      // Need to support addition with a input flag
-      Add,
-
-      // Used on PIC Code to load global addresses
-      LoadAddr
+      Ret
     };
   }