From: Robin Dapp <rdapp.gcc@gmail.com>
To: Michael Collison <collison@rivosinc.com>,
gcc-patches <gcc-patches@gcc.gnu.org>,
palmer <palmer@dabbelt.com>, Kito Cheng <kito.cheng@gmail.com>,
"juzhe.zhong@rivai.ai" <juzhe.zhong@rivai.ai>,
jeffreyalaw <jeffreyalaw@gmail.com>
Cc: rdapp.gcc@gmail.com
Subject: Re: [PATCH v2] RISC-V: Add autovec FP binary operations.
Date: Fri, 16 Jun 2023 14:41:47 +0200 [thread overview]
Message-ID: <ffbcbeaa-6e15-fada-4ae2-7f23ddc67f0f@gmail.com> (raw)
In-Reply-To: <a326f3c3-01f4-8b1c-77a2-e3dd9b1a35fe@rivosinc.com>
> Why do we need '-ffast-math' with the tests?
Normally we would use the COND_ADD to mask out possibly trapping
vector elements and the likes but COND_ADD works with normal
vector masking. What we currently have is no masking but the
LEN_LOAD/LEN_STORE machinery i.e. length-controlled loops.
There is no LEN_MASK_COND_ADD yet, but Juzhe is working to upstream
it. Once this is in place we don't need -ffast-math anymore.
Regards
Robin
next prev parent reply other threads:[~2023-06-16 12:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-14 15:28 [PATCH] " Robin Dapp
2023-06-15 15:10 ` [PATCH v2] " Robin Dapp
2023-06-15 16:33 ` Michael Collison
2023-06-16 12:41 ` Robin Dapp [this message]
2023-06-16 6:58 ` juzhe.zhong
2023-06-16 7:31 ` Robin Dapp
[not found] ` <3593152A4AF6C445+E892D494-DF60-4B27-928D-14A269989B2B@rivai.ai>
2023-06-16 13:29 ` [PATCH v3] " Robin Dapp
2023-09-06 9:43 ` Lehua Ding
2023-09-06 13:27 ` Robin Dapp
2023-09-07 3:25 ` Lehua Ding
[not found] ` <1609CD82F4EC3898+30AECC2C-6966-43A1-854C-C14F08E5D45B@rivai.ai>
2023-06-17 2:20 ` Jeff Law
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