qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH 00/27] tcg: Simplify temporary usage


From: Richard Henderson
Subject: Re: [PATCH 00/27] tcg: Simplify temporary usage
Date: Wed, 15 Feb 2023 20:15:37 -1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1

On 2/10/23 02:35, Emilio Cota wrote:
I ran yesterday linux-user SPEC06 benchmarks from your tcg-life branch.
I do see perf regressions for two workloads (sjeng and xalancbmk).
With perf(1) I see liveness_pass* are at 0.00%, so I wonder: is it
possible that the emitted code isn't quite the same?

Everything that I checked by hand was the same, but it's possible.
It's a tedious process.  You'd definitely want to turn off ASR.

My current branch has __attribute__((noreturn)) added to all of the liveness passes, so that they don't get folded into tcg_gen_code. But I still would expect 0%.

r~



reply via email to

[Prev in Thread] Current Thread [Next in Thread]