Re: [Qemu-devel] [PATCH 7/8] tcg/optimize: Optmize ANDC X, Y, Y to MOV X, 0

[Aurelien Jarno <aurelien@aurel32.net>]

On Fri, Jan 31, 2014 at 08:47:02AM -0600, Richard Henderson wrote:
> Like we already do for SUB and XOR.
> 
> Signed-off-by: Richard Henderson <rth@twiddle.net>
> ---
>  tcg/optimize.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tcg/optimize.c b/tcg/optimize.c
> index cdfc746..a703f8c 100644
> --- a/tcg/optimize.c
> +++ b/tcg/optimize.c
> @@ -945,6 +945,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
>  
>          /* Simplify expression for "op r, a, a => movi r, 0" cases */
>          switch (op) {
> +        CASE_OP_32_64(andc):
>          CASE_OP_32_64(sub):
>          CASE_OP_32_64(xor):
>              if (temps_are_copies(args[1], args[2])) {

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>


-- 
Aurelien Jarno	                        GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net