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From: Richard Henderson <rth@twiddle.net>
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Date: Fri, 22 Sep 2017 08:31:29 -0500
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Subject: Re: [Qemu-devel] [PATCH] tcg/tci: do not use ldst label (never
 implemented)
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To: Thomas Huth <thuth@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
Cc: Stefan Weil <sw@weilnetz.de>, Peter Maydell <peter.maydell@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, QEMU Developers <qemu-devel@nongnu.org>, =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <f4bug@amsat.org>

On 09/21/2017 04:59 AM, Thomas Huth wrote:
> $ time ppc64-softmmu/qemu-system-ppc64 -nographic -vga none -prom-env
> 'use-nvramrc?=true' -prom-env 'nvramrc=power-off'
> [...]
> real	0m13.953s
> user	0m13.904s
> sys	0m0.046s
> 
> That's impressive! Richard, may I ask what's the current state of this?
> Do you plan to merge this soon, or are there still issues (like the ones
> that Paolo mentioned)?

I had been assuming that it would go in via the normal ppc tree.
If I should just merge it with tcg-next, I can do so...

> However, I only see that speed-up with the normal x86 backend. I've also
> tried it with TCI, but I hardly saw any improvements there ... is there
> still something missing in the TCI backend that is required for the
> tcg_gen_lookup_and_goto_ptr feature?

Yes.

r~