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[Qemu-devel] [Bug 1594069] Re: SIMD instructions translated to scalar ho
[Qemu-devel] [Bug 1594069] Re: SIMD instructions translated to scalar host instructions
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?
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SIMD instructions translated to scalar host instructions
Status in QEMU:
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 , and even a submitted patch series, but all
discussion has effectively died out .
I would like to see better SIMD performance on qemu, especially as
non-x86 architectures are becoming widely used (e.g. ARM).
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