From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH 7/8] target/arm: Implement FPCR.EBF=1 semantics for bfdotadd()
Date: Wed, 31 Jul 2024 11:50:22 +1000 [thread overview]
Message-ID: <f72574e7-478b-42e9-b3dc-e3d3d0e73f90@linaro.org> (raw)
In-Reply-To: <20240730160306.2959745-8-peter.maydell@linaro.org>
On 7/31/24 02:03, Peter Maydell wrote:
> Implement the FPCR.EBF=1 semantics for bfdotadd() operations:
> * is_ebf() sets up fpst and fpst_odd
> * bfdotadd_ebf() implements the fused paired-multiply-and-add
> operation that we need
>
> The paired-multiply-and-add is similar to f16_dotadd() and
> we use the same trick here as in that function, but the inputs
> here are bfloat16 rather than float16.
>
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
> target/arm/tcg/vec_helper.c | 57 +++++++++++++++++++++++++++++++++++--
> 1 file changed, 54 insertions(+), 3 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2024-07-31 1:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-30 16:02 [PATCH 0/8] target/arm: Implement FEAT_EBF16 Peter Maydell
2024-07-30 16:02 ` [PATCH 1/8] target/arm: Allow setting the FPCR.EBF bit for FEAT_EBF16 Peter Maydell
2024-07-31 1:30 ` Richard Henderson
2024-07-30 16:03 ` [PATCH 2/8] target/arm: Pass env pointer through to sme_bfmopa helper Peter Maydell
2024-07-31 1:32 ` Richard Henderson
2024-07-30 16:03 ` [PATCH 3/8] target/arm: Pass env pointer through to gvec_bfdot helper Peter Maydell
2024-07-31 1:36 ` Richard Henderson
2024-07-31 12:31 ` Peter Maydell
2024-07-30 16:03 ` [PATCH 4/8] target/arm: Pass env pointer through to gvec_bfdot_idx helper Peter Maydell
2024-07-31 1:37 ` Richard Henderson
2024-07-30 16:03 ` [PATCH 5/8] target/arm: Pass env pointer through to gvec_bfmmla helper Peter Maydell
2024-07-31 1:38 ` Richard Henderson
2024-07-30 16:03 ` [PATCH 6/8] target/arm: Prepare bfdotadd() callers for FEAT_EBF support Peter Maydell
2024-07-31 1:43 ` Richard Henderson
2024-07-31 1:48 ` Richard Henderson
2024-07-31 12:32 ` Peter Maydell
2024-07-30 16:03 ` [PATCH 7/8] target/arm: Implement FPCR.EBF=1 semantics for bfdotadd() Peter Maydell
2024-07-31 1:50 ` Richard Henderson [this message]
2024-07-30 16:03 ` [PATCH 8/8] target/arm: Enable FEAT_EBF16 in the "max" CPU Peter Maydell
2024-07-31 1:51 ` Richard Henderson
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