From: Alan Modra <amodra@gmail.com>
To: gcc-patches@gcc.gnu.org, richard.sandiford@arm.com
Subject: Re: [PATCH] genattrtab bit-rot, and if_then_else in values
Date: Mon, 07 Jan 2019 22:31:00 -0000 [thread overview]
Message-ID: <20190107223123.GK3170@bubble.grove.modra.org> (raw)
In-Reply-To: <87imz0mzwh.fsf@arm.com>
On Mon, Jan 07, 2019 at 12:10:38PM +0000, Richard Sandiford wrote:
> Alan Modra <amodra@gmail.com> writes:
> > +/* Given an attribute value expression, return the maximum value that
> > + might be evaluated assuming all conditionals are independent.
> > + Return INT_MAX if the value can't be calculated by this function. */
>
> Not sure about "assuming all conditionals are independent". All three
> functions should be conservatively correct without any assumptions.
True. I'll drop that phrase. The functions aren't even guaranteed to
give an exactly correct result if they contain any conditions..
> OK without that part if you agree.
--
Alan Modra
Australia Development Lab, IBM
prev parent reply other threads:[~2019-01-07 22:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-03 9:22 Alan Modra
2019-01-03 12:41 ` Richard Sandiford
2019-01-03 14:36 ` Alan Modra
2019-01-03 17:08 ` Richard Sandiford
2019-01-03 19:04 ` Richard Sandiford
2019-01-04 0:20 ` Alan Modra
2019-01-04 12:18 ` Richard Sandiford
2019-01-06 22:36 ` Alan Modra
2019-01-07 12:10 ` Richard Sandiford
2019-01-07 22:31 ` Alan Modra [this message]
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