From: Eric Botcazou <ebotcazou@adacore.com>
To: Richard Guenther <richard.guenther@gmail.com>
Cc: Kai Tietz <ktietz70@googlemail.com>,
GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [patch gimplifier]: Change TRUTH_(AND|OR|XOR) expressions to binary form
Date: Thu, 19 May 2011 12:57:00 -0000 [thread overview]
Message-ID: <201105191245.02882.ebotcazou@adacore.com> (raw)
In-Reply-To: <BANLkTinv=33LGFz07OxRDbFV25=jDPnnpQ@mail.gmail.com>
> Eric, how will this interact with Ada boolean types with 8 bit precision
> and those "invalid" values - will invalid values ever enter into
> expressions or are they checked before?
IIUC the Ada semantics is that they must be checked prior to being used. Once
they are used, they are "recycled" into valid values. So the issue boils down
to how the check is implemented and it doesn't use TRUTH_(AND|OR|XOR) at all.
> Can you think of something that would break with s/TRUTH_*_EXPR/BIT_*_EXPR/
> for Ada?
No, not at the moment. Thanks for asking in any case.
--
Eric Botcazou
next prev parent reply other threads:[~2011-05-19 10:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 17:14 Kai Tietz
2011-05-18 19:35 ` Kai Tietz
2011-05-19 12:31 ` Richard Guenther
2011-05-19 12:57 ` Eric Botcazou [this message]
2011-05-19 12:59 ` Richard Guenther
2011-05-19 13:01 ` Kai Tietz
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