diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 4a92acb6e07..3592f9f9e14 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -134,19 +134,7 @@ rs6000_override_options ()
 	    POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64},
 	 {"ppc604", PROCESSOR_PPC604,
 	    MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS,
-	    POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64},
-	 {"620", PROCESSOR_PPC620,
-	    (MASK_POWERPC | POWERPC_OPT_MASKS | MASK_POWERPC64
-	     | MASK_NEW_MNEMONICS),
-	      POWER_MASKS},
-	 {"mpc620", PROCESSOR_PPC620,
-	    (MASK_POWERPC | POWERPC_OPT_MASKS | MASK_POWERPC64
-	     | MASK_NEW_MNEMONICS),
-	      POWER_MASKS},
-	 {"ppc620", PROCESSOR_PPC620,
-	    (MASK_POWERPC | POWERPC_OPT_MASKS | MASK_POWERPC64
-	     | MASK_NEW_MNEMONICS),
-	      POWER_MASKS}};
+	  POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}};
 
   int ptt_size = sizeof (processor_target_table) / sizeof (struct ptt);