From: Florian Weimer <fw@deneb.enyo.de>
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: gcc-patches@gcc.gnu.org, Andrew Pinski <pinskia@gmail.com>,
Uros Bizjak <ubizjak@gmail.com>,
Bernd Schmidt <bschmidt@redhat.com>
Subject: Re: [PATCH 2/2] Extend -falign-FOO=N to N[,M[,N2[,M2]]]
Date: Thu, 29 Sep 2016 08:27:00 -0000 [thread overview]
Message-ID: <87ponn9lri.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <20160928125704.29624-3-dvlasenk@redhat.com> (Denys Vlasenko's message of "Wed, 28 Sep 2016 14:57:04 +0200")
* Denys Vlasenko:
> Example syntax is -falign-functions=64,9: "align to 64 by skipping up to
> 9 bytes (not inclusive)". IOW: "after a call insn, CPU will always be able
> to fetch at least 9 bytes of insns".
Is it possible to set this using the optimize function attribute?
For example, we could use this to reduce alignment for compat
functions in glibc.
next prev parent reply other threads:[~2016-09-29 8:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-28 13:13 [PATCH 0/2] Extend -falign-FOO=N to N[,M[,N2[,M2]]] version 4 Denys Vlasenko
2016-09-28 12:57 ` [PATCH 1/2] Temporary remove "at least 8 byte alignment" code from x86 Denys Vlasenko
2016-09-28 13:31 ` [PATCH 2/2] Extend -falign-FOO=N to N[,M[,N2[,M2]]] Denys Vlasenko
2016-09-29 8:27 ` Florian Weimer [this message]
2016-09-29 14:54 ` Bernd Schmidt
2016-09-29 17:36 ` Denys Vlasenko
2016-09-29 22:04 ` Denys Vlasenko
2016-09-30 12:10 ` Bernd Schmidt
2016-09-30 15:40 ` Denys Vlasenko
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