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From: Taylor Simpson <tsimpson@quicinc.com>
To: Alessandro Di Federico <ale.qemu@rev.ng>,
	"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Cc: Alessandro Di Federico <ale@rev.ng>,
	Brian Cain <bcain@quicinc.com>,
	"richard.henderson@linaro.org" <richard.henderson@linaro.org>,
	"babush@rev.ng" <babush@rev.ng>, "nizzo@rev.ng" <nizzo@rev.ng>,
	"philmd@redhat.com" <philmd@redhat.com>
Subject: RE: [PATCH v5 06/14] target/hexagon: introduce new helper functions
Date: Wed, 23 Jun 2021 12:05:00 +0000	[thread overview]
Message-ID: <BYAPR02MB4886BFECEB3909FFCBEA7233DE089@BYAPR02MB4886.namprd02.prod.outlook.com> (raw)
In-Reply-To: <20210619093713.1845446-7-ale.qemu@rev.ng>



> -----Original Message-----
> From: Alessandro Di Federico <ale.qemu@rev.ng>
> Sent: Saturday, June 19, 2021 3:37 AM
> To: qemu-devel@nongnu.org
> Cc: Taylor Simpson <tsimpson@quicinc.com>; Brian Cain
> <bcain@quicinc.com>; babush@rev.ng; nizzo@rev.ng; philmd@redhat.com;
> richard.henderson@linaro.org; Alessandro Di Federico <ale@rev.ng>
> Subject: [PATCH v5 06/14] target/hexagon: introduce new helper functions
> 
> From: Niccolò Izzo <nizzo@rev.ng>
> 
> These helpers will be employed by the idef-parser generated code.
> 
> Signed-off-by: Alessandro Di Federico <ale@rev.ng>
> Signed-off-by: Niccolò Izzo <nizzo@rev.ng>
> ---
>  target/hexagon/genptr.c | 163
> ++++++++++++++++++++++++++++++++++++----
>  target/hexagon/genptr.h |  23 ++++++
>  target/hexagon/macros.h |   9 +++
>  3 files changed, 180 insertions(+), 15 deletions(-)
> 
> diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c index
> 6f2816f6e2..cf45c28f58 100644
> --- a/target/hexagon/genptr.c


> +++ b/target/hexagon/genptr.c
> +void gen_fbrev(TCGv result, TCGv src)
> +{
> +    TCGv lo = tcg_temp_new();
> +    TCGv tmp1 = tcg_temp_new();
> +    TCGv tmp2 = tcg_temp_new();
> +
> +    /* Bit reversal of low 16 bits */
> +    tcg_gen_extract_tl(lo, src, 0, 16);
> +    tcg_gen_andi_tl(tmp1, lo, 0xaaaa);
> +    tcg_gen_shri_tl(tmp1, tmp1, 1);
> +    tcg_gen_andi_tl(tmp2, lo, 0x5555);
> +    tcg_gen_shli_tl(tmp2, tmp2, 1);
> +    tcg_gen_or_tl(lo, tmp1, tmp2);
> +    tcg_gen_andi_tl(tmp1, lo, 0xcccc);
> +    tcg_gen_shri_tl(tmp1, tmp1, 2);
> +    tcg_gen_andi_tl(tmp2, lo, 0x3333);
> +    tcg_gen_shli_tl(tmp2, tmp2, 2);
> +    tcg_gen_or_tl(lo, tmp1, tmp2);
> +    tcg_gen_andi_tl(tmp1, lo, 0xf0f0);
> +    tcg_gen_shri_tl(tmp1, tmp1, 4);
> +    tcg_gen_andi_tl(tmp2, lo, 0x0f0f);
> +    tcg_gen_shli_tl(tmp2, tmp2, 4);
> +    tcg_gen_or_tl(lo, tmp1, tmp2);
> +    tcg_gen_bswap16_tl(lo, lo);
> +
> +    /* Final tweaks */
> +    tcg_gen_deposit_tl(result, src, lo, 0, 16);
> +    tcg_gen_or_tl(result, result, lo);
> +
> +    tcg_temp_free(lo);
> +    tcg_temp_free(tmp1);
> +    tcg_temp_free(tmp2);
> +}

Remove this function and call gen_helper_fbrev instead.  This was feedback from Richard Henderson on one of my previous patch series.

Thanks,
Taylor

  reply	other threads:[~2021-06-23 12:06 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-19  9:36 [PATCH v5 00/14] target/hexagon: introduce idef-parser Alessandro Di Federico via
2021-06-19  9:37 ` [PATCH v5 01/14] tcg: expose TCGCond manipulation routines Alessandro Di Federico via
2021-06-19 13:51   ` Richard Henderson
2021-06-19  9:37 ` [PATCH v5 02/14] target/hexagon: update MAINTAINERS for idef-parser Alessandro Di Federico via
2021-06-19  9:37 ` [PATCH v5 03/14] target/hexagon: import README " Alessandro Di Federico via
2021-06-23 15:46   ` Taylor Simpson
2021-06-24 13:51     ` Alessandro Di Federico via
2021-06-19  9:37 ` [PATCH v5 04/14] target/hexagon: make slot number an unsigned Alessandro Di Federico via
2021-06-23 15:58   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 05/14] target/hexagon: make helper functions non-static Alessandro Di Federico via
2021-06-23 18:29   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 06/14] target/hexagon: introduce new helper functions Alessandro Di Federico via
2021-06-23 12:05   ` Taylor Simpson [this message]
2021-06-23 18:49   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 07/14] target/hexagon: expose next PC in DisasContext Alessandro Di Federico via
2021-06-23 18:54   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 08/14] target/hexagon: prepare input for the idef-parser Alessandro Di Federico via
2021-06-23 19:37   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 09/14] target/hexagon: import lexer for idef-parser Alessandro Di Federico via
2021-06-23 20:05   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 10/14] target/hexagon: import parser " Alessandro Di Federico via
2021-06-22 22:35   ` Taylor Simpson
2021-06-24  3:55   ` Taylor Simpson
2021-06-29 14:26     ` Alessandro Di Federico via
2021-06-30 16:51     ` Paolo Montesel
2021-07-05 16:47     ` Alessandro Di Federico via
2021-06-19  9:37 ` [PATCH v5 11/14] target/hexagon: call idef-parser functions Alessandro Di Federico via
2021-06-25 22:00   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 12/14] target/hexagon: remove unused macros and functions Alessandro Di Federico via
2021-06-25 22:02   ` Taylor Simpson
2021-06-19  9:37 ` [PATCH v5 13/14] target/hexagon: import additional tests Alessandro Di Federico via
2021-06-25 23:56   ` Taylor Simpson
2021-06-28 22:39     ` Taylor Simpson
2021-07-05 16:50     ` Alessandro Di Federico via
2021-06-19  9:37 ` [PATCH v5 14/14] gitlab-ci: do not use qemu-project Docker registry Alessandro Di Federico via
2021-06-29 14:26   ` Alessandro Di Federico via
2021-06-29 14:37   ` Daniel P. Berrangé
2021-07-08 16:00     ` Alessandro Di Federico via

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