From: Richard Henderson <richard.henderson@linaro.org>
To: Stefan Brankovic <stefan.brankovic@rt-rk.com>, qemu-devel@nongnu.org
Cc: david@gibson.dropbear.id.au
Subject: Re: [Qemu-devel] [PATCH 6/8] target/ppc: Optimize emulation of vclzw instruction
Date: Wed, 26 Jun 2019 17:38:13 +0200 [thread overview]
Message-ID: <e35eb094-83e1-24a7-4201-177682081c67@linaro.org> (raw)
In-Reply-To: <1560942225-24728-7-git-send-email-stefan.brankovic@rt-rk.com>
On 6/19/19 1:03 PM, Stefan Brankovic wrote:
> Optimize Altivec instruction vclzw (Vector Count Leading Zeros Word).
> This instruction counts the number of leading zeros of each word element
> in source register and places result in the appropriate word element of
> destination register.
>
> Counting is to be performed in four iterations of for loop(one for each
> word elemnt of source register vB). Every iteration consists of loading
> appropriate word element from source register, counting leading zeros
> with tcg_gen_clzi_i32, and saving the result in appropriate word element
> of destination register.
>
> Signed-off-by: Stefan Brankovic <stefan.brankovic@rt-rk.com>
> ---
> target/ppc/helper.h | 1 -
> target/ppc/int_helper.c | 3 ---
> target/ppc/translate/vmx-impl.inc.c | 28 +++++++++++++++++++++++++++-
> 3 files changed, 27 insertions(+), 5 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2019-06-26 18:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-19 11:03 [Qemu-devel] [PATCH 0/8] target/ppc: Optimize emulation of some Altivec instructions Stefan Brankovic
2019-06-19 11:03 ` [Qemu-devel] [PATCH 1/8] target/ppc: Optimize emulation of lvsl and lvsr instructions Stefan Brankovic
2019-06-26 15:28 ` Richard Henderson
2019-06-26 15:48 ` Richard Henderson
2019-06-19 11:03 ` [Qemu-devel] [PATCH 2/8] target/ppc: Optimize emulation of vsl and vsr instructions Stefan Brankovic
2019-06-26 15:34 ` Richard Henderson
2019-06-19 11:03 ` [Qemu-devel] [PATCH 3/8] target/ppc: Optimize emulation of vpkpx instruction Stefan Brankovic
2019-06-19 11:03 ` [Qemu-devel] [PATCH 4/8] target/ppc: Optimize emulation of vgbbd instruction Stefan Brankovic
2019-06-26 15:37 ` Richard Henderson
2019-06-19 11:03 ` [Qemu-devel] [PATCH 5/8] target/ppc: Optimize emulation of vclzd instruction Stefan Brankovic
2019-06-19 11:03 ` [Qemu-devel] [PATCH 6/8] target/ppc: Optimize emulation of vclzw instruction Stefan Brankovic
2019-06-26 15:38 ` Richard Henderson [this message]
2019-06-19 11:03 ` [Qemu-devel] [PATCH 7/8] target/ppc: Optimize emulation of vclzh and vclzb instructions Stefan Brankovic
2019-06-19 11:03 ` [Qemu-devel] [PATCH 8/8] target/ppc: Refactor emulation of vmrgew and vmrgow instructions Stefan Brankovic
2019-06-19 11:47 ` [Qemu-devel] [PATCH 0/8] target/ppc: Optimize emulation of some Altivec instructions no-reply
-- strict thread matches above, loose matches on Subject: below --
2019-06-06 10:15 [Qemu-devel] [PATCH 0/8] Optimize emulation of ten Altivec instructions: lvsl, Stefan Brankovic
2019-06-06 10:15 ` [Qemu-devel] [PATCH 6/8] target/ppc: Optimize emulation of vclzw instruction Stefan Brankovic
2019-06-06 18:34 ` Richard Henderson
2019-06-17 11:50 ` Stefan Brankovic
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