From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [PATCH v2 0/4] target/arm vector improvements
Date: Sun, 16 Feb 2020 13:42:28 -0800 [thread overview]
Message-ID: <20200216214232.4230-1-richard.henderson@linaro.org> (raw)
Changes for v2:
* Rename function arguments as requested by ajb.
* Minor optimization in helper_gvec_pmul_b.
Original blurb:
The first patch has been seen before.
https://patchwork.ozlabs.org/patch/1115039/
It had a bug and I didn't fix it right away and then forgot.
Fixed now; I had mixed up the operand ordering for aarch32.
The next 3 are something that I noticed while doing other stuff.
In particular, pmull is used heavily during https transfers.
While cloning a repository, the old code peaks at 27% of the
total runtime, as measured by perf top. The new code does
not quite reach 3% repeating the same clone.
In addition, the new helper functions are in the form that
will be required for the implementation of SVE2.
r~
Richard Henderson (4):
target/arm: Vectorize USHL and SSHL
target/arm: Convert PMUL.8 to gvec
target/arm: Convert PMULL.64 to gvec
target/arm: Convert PMULL.8 to gvec
target/arm/helper-sve.h | 2 +
target/arm/helper.h | 21 ++-
target/arm/translate.h | 6 +
target/arm/neon_helper.c | 117 -------------
target/arm/translate-a64.c | 83 ++++-----
target/arm/translate.c | 348 ++++++++++++++++++++++++++++++++-----
target/arm/vec_helper.c | 211 ++++++++++++++++++++++
7 files changed, 560 insertions(+), 228 deletions(-)
--
2.20.1
next reply other threads:[~2020-02-16 21:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-16 21:42 Richard Henderson [this message]
2020-02-16 21:42 ` [PATCH v2 1/4] target/arm: Vectorize USHL and SSHL Richard Henderson
2020-02-16 21:42 ` [PATCH v2 2/4] target/arm: Convert PMUL.8 to gvec Richard Henderson
2020-02-16 21:42 ` [PATCH v2 3/4] target/arm: Convert PMULL.64 " Richard Henderson
2020-02-16 21:42 ` [PATCH v2 4/4] target/arm: Convert PMULL.8 " Richard Henderson
2020-02-16 22:20 ` [PATCH v2 0/4] target/arm vector improvements no-reply
2020-02-20 14:55 ` Peter Maydell
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