[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [Bug 1594069] Re: SIMD instructions translated to scalar ho
From: |
Timothy Pearson |
Subject: |
[Qemu-devel] [Bug 1594069] Re: SIMD instructions translated to scalar host instructions |
Date: |
Mon, 20 Jun 2016 14:05:29 -0000 |
I mostly filed the bug report since I was seeing multiple different
attempts to implement this, and even a proper patch series on the
mailing list, but no movement at all toward integrating this feature
into mainline qemu.
What would be needed to e.g. make the patch series on the mailing list
acceptable for merge?
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1594069
Title:
SIMD instructions translated to scalar host instructions
Status in QEMU:
Confirmed
Bug description:
SIMD instructions inside the guest (NEON, MMX, SSE, SSE2, AVX) are
translated to scalar instructions on the host instead of SIMD
instructions. It appears that there have been a few efforts to
rectify this [1], and even a submitted patch series, but all
discussion has effectively died out [2].
I would like to see better SIMD performance on qemu, especially as
non-x86 architectures are becoming widely used (e.g. ARM).
[1]
http://dl.acm.org/citation.cfm?id=2757098&dl=ACM&coll=DL&CFID=633095244&CFTOKEN=12352103
[2] https://lists.nongnu.org/archive/html/qemu-devel/2014-10/msg01720.html
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1594069/+subscriptions