[PATCH, i386]: Fix two small MMX glitches

[Uros Bizjak]

2018-11-29  Uros Bizjak  <ubiz...@gmail.com>

    * config/i386/i386.c (inline_memory_move_cost):
    Check "in" for 2 in MMX_CLASS_P case.
    * config/i386/mmx.md (*mov<mode>_internal): Correct
    TARGET_INTER_UNIT_MOVES_FROM_VEC and TARGET_INTER_UNIT_MOVES_TO_VEC
    alternatives in preferred_for_speed attribute calculation.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Committed to mainline SVN.

Uros.

Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c  (revision 266593)
+++ config/i386/i386.c  (working copy)
@@ -39528,7 +39528,7 @@ inline_memory_move_cost (machine_mode mode, enum r
          default:
            return 100;
        }
-      if (in)
+      if (in == 2)
         return MAX (ix86_cost->mmx_load [index], ix86_cost->mmx_store [index]);
       return in ? ix86_cost->mmx_load [index] : ix86_cost->mmx_store [index];
     }
Index: config/i386/mmx.md
===================================================================
--- config/i386/mmx.md  (revision 266593)
+++ config/i386/mmx.md  (working copy)
@@ -208,9 +208,9 @@
           ]
           (const_string "DI")))
    (set (attr "preferred_for_speed")
-     (cond [(eq_attr "alternative" "10,15")
+     (cond [(eq_attr "alternative" "9,15")
              (symbol_ref "TARGET_INTER_UNIT_MOVES_FROM_VEC")
-           (eq_attr "alternative" "11,16")
+           (eq_attr "alternative" "10,16")
              (symbol_ref "TARGET_INTER_UNIT_MOVES_TO_VEC")
           ]
           (symbol_ref "true")))])