From: "Emilio G. Cota" <cota@braap.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 00/12] tcg: Improve register allocation for calls
Date: Thu, 29 Nov 2018 19:39:15 -0500 [thread overview]
Message-ID: <20181130003915.GA3323@flamenco> (raw)
In-Reply-To: <9d890088-8dd6-517d-52a7-a6166f0cd8a6@linaro.org>
On Thu, Nov 29, 2018 at 11:23:09 -0800, Richard Henderson wrote:
> On 11/28/18 2:15 PM, Emilio G. Cota wrote:
> > Unfortunately, it doesn't seem to help, performance-wise.
>
> That is really disappointing, considering the size gains are huge -- even more
> dramatically for non-x86 hosts. I will see about some more benchmarking on
> this for other host/guest combinations.
A64 and POWER9 host numbers:
https://imgur.com/a/m6Pss99
There's quite a bit of noise in the P9 measurements, but it's
a shared machine so I can't do much about that.
I'll update the A64 results with error bars later tonight,
when I get further results.
E.
next prev parent reply other threads:[~2018-11-30 0:39 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-28 5:38 [Qemu-devel] [PATCH 00/12] tcg: Improve register allocation for calls Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 01/12] tcg: Add preferred_reg argument to tcg_reg_alloc Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 02/12] tcg: Add preferred_reg argument to temp_load Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 03/12] tcg: Add preferred_reg argument to temp_sync Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 04/12] tcg: Add preferred_reg argument to tcg_reg_alloc_do_movi Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 05/12] tcg: Add output_pref to TCGOp Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 06/12] tcg: Improve register allocation for matching constraints Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 07/12] tcg: Dump register preference info with liveness Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 08/12] tcg: Reindent parts of liveness_pass_1 Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 09/12] tcg: Rename and adjust liveness_pass_1 helpers Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 10/12] tcg: Split out more subroutines from liveness_pass_1 Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 11/12] tcg: Add TCG_OPF_BB_EXIT Richard Henderson
2018-11-28 5:38 ` [Qemu-devel] [PATCH 12/12] tcg: Record register preferences during liveness Richard Henderson
2018-11-28 22:15 ` [Qemu-devel] [PATCH 00/12] tcg: Improve register allocation for calls Emilio G. Cota
2018-11-29 19:23 ` Richard Henderson
2018-11-30 0:39 ` Emilio G. Cota [this message]
2018-11-30 3:00 ` Emilio G. Cota
2018-11-30 7:15 ` Laurent Desnogues
2018-11-30 15:56 ` Emilio G. Cota
2018-12-24 21:53 ` Emilio G. Cota
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