[Qemu-devel] Arm emulation tweak

[Nigel Horne]

This small patch reduces (on my machine) the call to new_tmp by 16 
bytes, which may not sound much, but it's called so often that it makes 
a nice speed up of Arm emulation:

*** Otranslate.c    2009-08-18 16:52:42.000000000 +0100
--- translate.c    2009-08-18 16:53:17.000000000 +0100
***************
*** 105,120 ****
 /* Allocate a temporary variable.  */
 static TCGv_i32 new_tmp(void)
 {
-     TCGv tmp;
     if (num_temps == MAX_TEMPS)
         abort();

     if (GET_TCGV_I32(temps[num_temps]))
       return temps[num_temps++];

!     tmp = tcg_temp_new_i32();
!     temps[num_temps++] = tmp;
!     return tmp;
 }

 /* Release a temporary variable.  */
--- 105,117 ----
 /* Allocate a temporary variable.  */
 static TCGv_i32 new_tmp(void)
 {
     if (num_temps == MAX_TEMPS)
         abort();

     if (GET_TCGV_I32(temps[num_temps]))
       return temps[num_temps++];

!     return temps[num_temps++] = tcg_temp_new_i32();
 }

 /* Release a temporary variable.  */

--
Nigel Horne. Arranger, Adjudicator, Band Trainer, Composer, Tutor, Typesetter.
NJH Music, ICQ#20252325
address@hidden http://www.bandsman.co.uk