[PATCH, i386]: Correctly compute number of GPR moves in memory move cost function

[Uros Bizjak]

TFmode is moved differently than XFmode from a while ago.

2018-12-02  Uros Bizjak  <ubiz...@gmail.com>

    * config/i386/i386.c (inline_memory_move_cost): Correctly
    compute number of TFmode GPR moves.

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 266635)
+++ config/i386/i386.c  (working copy)
@@ -39562,9 +39562,6 @@ inline_memory_move_cost (machine_mode mode, enum r
          return MAX (ix86_cost->int_load[1], ix86_cost->int_store[1]);
        return in ? ix86_cost->int_load[1] : ix86_cost->int_store[1];
       default:
-       /* Compute number of 32bit moves needed.  TFmode is moved as XFmode.  */
-       if (mode == TFmode)
-         mode = XFmode;
        if (in == 2)
          cost = MAX (ix86_cost->int_load[2], ix86_cost->int_store[2]);
        else if (in)
@@ -39571,6 +39568,7 @@ inline_memory_move_cost (machine_mode mode, enum r
          cost = ix86_cost->int_load[2];
        else
          cost = ix86_cost->int_store[2];
+       /* Multiply with the number of GPR moves needed.  */
        return cost * CEIL ((int) GET_MODE_SIZE (mode), UNITS_PER_WORD);
     }
 }