From: "Maciej W. Rozycki" <macro@embecosm.com>
To: Kito Cheng <kito.cheng@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>,
Andrew Waterman <andrew@sifive.com>
Subject: Re: [PATCH] RISC-V: Avoid redundant sign-extension for SImode SGE, SGEU, SLE, SLEU
Date: Fri, 12 Aug 2022 23:01:52 +0100 (BST) [thread overview]
Message-ID: <alpine.DEB.2.20.2208122258210.10833@tpp.orcam.me.uk> (raw)
In-Reply-To: <CA+yXCZDwfPKSueU+QtiTz+cwiauYb0GmEW5tbwKvqKiiJEsiqg@mail.gmail.com>
On Thu, 11 Aug 2022, Kito Cheng wrote:
> LGTM, but with a nit, I don't get set.w but get an andi like below, so
> maybe we should also scan-assembler-not andi? feel free to commit that
> directly with that fix
>
> ```asm
> sleu:
> sgtu a0,a0,a1 # 9 [c=4 l=4] *sgtu_disi
> xori a0,a0,1 # 10 [c=4 l=4] *xorsi3_internal/1
> andi a0,a0,1 # 16 [c=4 l=4] anddi3/1
> ret # 25 [c=0 l=4] simple_return
> ```
Interesting. I can do that, but can you please share the compilation
options, given or defaulted (from `--with...' configuration options), this
happens with?
Maciej
next prev parent reply other threads:[~2022-08-12 22:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-03 9:54 Maciej W. Rozycki
2022-08-11 3:26 ` Kito Cheng
2022-08-12 22:01 ` Maciej W. Rozycki [this message]
2022-11-25 14:07 ` [PING][PATCH] " Maciej W. Rozycki
2022-11-28 14:50 ` Jeff Law
2022-11-28 15:38 ` Maciej W. Rozycki
2022-11-28 16:15 ` Jeff Law
2022-11-28 17:44 ` [PATCH v2] " Maciej W. Rozycki
2022-11-28 18:07 ` Jeff Law
2022-11-28 19:41 ` Maciej W. Rozycki
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