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From: Robin Dapp <rdapp.gcc@gmail.com>
To: Vineet Gupta <vineetg@rivosinc.com>,
	Jeff Law <jeffreyalaw@gmail.com>,
	Palmer Dabbelt <palmer@rivosinc.com>,
	Kito Cheng <kito.cheng@sifive.com>,
	"juzhe.zhong@rivai.ai" <juzhe.zhong@rivai.ai>,
	jeremy.bennett@embecosm.com
Cc: rdapp.gcc@gmail.com, GCC Patches <gcc-patches@gcc.gnu.org>,
	gnu-toolchain <gnu-toolchain@rivosinc.com>
Subject: Re: State of risc-v port in the current merge, revert, rinse-repeat commotion
Date: Wed, 24 Apr 2024 21:22:47 +0200	[thread overview]
Message-ID: <7728c0da-ad9f-42ce-8269-fad0f2233947@gmail.com> (raw)
In-Reply-To: <58137772-cd2b-489a-9687-db4a03b8578f@rivosinc.com>

Thanks Vineet!

> The dynamic icounts looks sane (vs. Apr 10 snapshot) except for a
> regression in x264 which is likely independent of the chaos going on.
> 
>      Apr 10     |     Apr 23      |
>   109f1b28fc94  |  6f0a646dd2fc   |
> ----------------+-----------------+--------
> 276,584,692,883 | 277,816,987,018 |  -0.45%
> 913,452,236,000 | 927,291,935,180 |  -1.52%
> 903,916,092,805 | 915,364,006,176 |  -1.27%

x264 uses widening arithmetic so it could be the reverts.
Can you compare the hot functions (e.g. x264_pixel_sad_16x16)
if anything stands out surrounding the vwadd.wv for example?

Regards
 Robin


  reply	other threads:[~2024-04-24 19:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-24 17:58 Vineet Gupta
2024-04-24 19:22 ` Robin Dapp [this message]
2024-04-24 22:58   ` Vineet Gupta

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