From: Richard Henderson <richard.henderson@linaro.org>
To: Taylor Simpson <tsimpson@quicinc.com>, qemu-devel@nongnu.org
Cc: ale@rev.ng, bcain@quicinc.com, philmd@redhat.com
Subject: Re: [PATCH 01/15] Hexagon (target/hexagon) TCG generation cleanup
Date: Thu, 25 Mar 2021 06:56:22 -0600 [thread overview]
Message-ID: <b3e689cd-2a0b-f1d9-0e8c-838ae014b6a7@linaro.org> (raw)
In-Reply-To: <1616640610-17319-2-git-send-email-tsimpson@quicinc.com>
On 3/24/21 8:49 PM, Taylor Simpson wrote:
> Simplify TCG generation of hex_reg_written
>
> Address feedback from Richard Henderson <richard.henderson@linaro.org>
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/genptr.c | 12 +++++++++---
> 1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
> index 7481f4c..349b949 100644
> --- a/target/hexagon/genptr.c
> +++ b/target/hexagon/genptr.c
> @@ -43,9 +43,15 @@ static inline void gen_log_predicated_reg_write(int rnum, TCGv val, int slot)
> tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum], slot_mask, zero,
> val, hex_new_value[rnum]);
> #if HEX_DEBUG
> - /* Do this so HELPER(debug_commit_end) will know */
> - tcg_gen_movcond_tl(TCG_COND_EQ, hex_reg_written[rnum], slot_mask, zero,
> - one, hex_reg_written[rnum]);
> + /*
> + * Do this so HELPER(debug_commit_end) will know
> + *
> + * Note that slot_mask indicates the value is not written
> + * (i.e., slot was cancelled), so we create a true/false value before
> + * or'ing with hex_reg_written[rnum].
> + */
> + tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero);
> + tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask);
> #endif
>
> tcg_temp_free(one);
The one variable is no longer used.
r~
next prev parent reply other threads:[~2021-03-25 12:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 2:49 [PATCH 00/15] Hexagon (target/hexagon) update Taylor Simpson
2021-03-25 2:49 ` [PATCH 01/15] Hexagon (target/hexagon) TCG generation cleanup Taylor Simpson
2021-03-25 12:56 ` Richard Henderson [this message]
2021-03-25 2:49 ` [PATCH 02/15] Hexagon (target/hexagon) remove unnecessary inline directives Taylor Simpson
2021-03-25 13:02 ` Richard Henderson
2021-03-25 2:49 ` [PATCH 03/15] Hexagon (target/hexagon) properly generate TB end for DISAS_NORETURN Taylor Simpson
2021-03-25 14:38 ` Richard Henderson
2021-03-25 2:49 ` [PATCH 04/15] Hexagon (target/hexagon) decide if pred has been written at TCG gen time Taylor Simpson
2021-03-25 14:42 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 05/15] Hexagon (target/hexagon) change variables from int to bool when appropriate Taylor Simpson
2021-03-25 9:35 ` Philippe Mathieu-Daudé
2021-03-25 14:44 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 06/15] Hexagon (target/hexagon) utility function changes Taylor Simpson
2021-03-25 14:45 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 07/15] Hexagon (target/hexagon) use softfloat default NaN and tininess Taylor Simpson
2021-03-25 14:54 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 08/15] Hexagon (target/hexagon) replace float32_mul_pow2 with float32_scalbn Taylor Simpson
2021-03-25 14:55 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 09/15] Hexagon (target/hexagon) use softfloat for float-to-int conversions Taylor Simpson
2021-03-25 16:09 ` Richard Henderson
2021-03-25 16:17 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 10/15] Hexagon (target/hexagon) instructions with multiple definitions Taylor Simpson
2021-03-25 16:24 ` Richard Henderson
2021-03-29 21:55 ` Taylor Simpson
2021-03-25 2:50 ` [PATCH 11/15] Hexagon (target/hexagon) circular addressing Taylor Simpson
2021-03-25 16:33 ` Richard Henderson
2021-03-25 17:37 ` Taylor Simpson
2021-03-25 2:50 ` [PATCH 12/15] Hexagon (target/hexagon) bit reverse (brev) addressing Taylor Simpson
2021-03-25 16:38 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 13/15] Hexagon (target/hexagon) load and unpack bytes instructions Taylor Simpson
2021-03-25 2:50 ` [PATCH 14/15] Hexagon (target/hexagon) load into shifted register instructions Taylor Simpson
2021-03-25 16:44 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 15/15] Hexagon (target/hexagon) CABAC decode bin Taylor Simpson
2021-03-25 16:54 ` Richard Henderson
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