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Re: [Qemu-devel] [PATCH 7/8] tcg/optimize: Optmize ANDC X, Y, Y to MOV X
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH 7/8] tcg/optimize: Optmize ANDC X, Y, Y to MOV X, 0 |
Date: |
Sun, 16 Feb 2014 19:27:34 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
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 <address@hidden>
> ---
> 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 <address@hidden>
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
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Aurelien Jarno <=