From: Eric Botcazou <botcazou@adacore.com>
To: Richard Biener <rguenther@suse.de>
Cc: "Andre Vieira (lists)" <andre.simoesdiasvieira@arm.com>,
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
Richard Sandiford <richard.sandiford@arm.com>,
ebotcazou@gcc.gnu.org
Subject: Re: vect: Make vect_check_gather_scatter reject offsets that aren't multiples of BITS_PER_UNIT [PR107346]
Date: Mon, 24 Oct 2022 10:31:59 +0200 [thread overview]
Message-ID: <3460816.iIbC2pHGDl@fomalhaut> (raw)
In-Reply-To: <nycvar.YFH.7.77.849.2210240713450.4294@jbgna.fhfr.qr>
> Eric - the docs of DECL_BIT_FIELD are vague enough "must be accessed
> specially" but ISTR it might eventually only apply to the fields
> (bit) size and not it's position. OTOH the Ada frontend might not
> be too careful in setting this flag for bit-packed structs?
It sets the flag when the alignment or size of the field does not match that
of its type, which indeed means that it needs to be accessed specially.
--
Eric Botcazou
next prev parent reply other threads:[~2022-10-24 8:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-21 16:42 Andre Vieira (lists)
2022-10-24 7:17 ` Richard Biener
2022-10-24 8:31 ` Eric Botcazou [this message]
2022-10-24 10:31 ` Andre Vieira (lists)
2022-10-24 12:46 ` Richard Biener
2022-10-24 13:24 ` Andre Vieira (lists)
2022-10-24 13:29 ` Richard Biener
2022-10-28 13:43 ` Andre Vieira (lists)
2022-10-28 13:46 ` Richard Biener
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