From: Jeffrey A Law <law@cygnus.com>
To: Greg McGary <gkm@eng.ascend.com>
Cc: Geoff Keating <geoffk@cygnus.com>, gcc@gcc.gnu.org
Subject: Re: Need advice on bounds checking approaches
Date: Tue, 28 Mar 2000 07:05:00 -0000 [thread overview]
Message-ID: <9365.954255482@upchuck> (raw)
In-Reply-To: <ms3dpbr5kg.fsf@gkm-dsl-194.ascend.com>
In message < ms3dpbr5kg.fsf@gkm-dsl-194.ascend.com >you write:
> optimize away redundant conditional traps. An advantage to emitting
> separate conditional traps for low and high bounds checks is that the
> separate lower-bound check can be more easily be moved out of a loop
> for monotonically increasing pointer livs.
I hadn't thought of that. It assumes you can't overflow, but that's
probably a reasonable simplification for pointer operations.
Is there any advantage to not always emitting the high/low bounds checks
separately?
jeff
next prev parent reply other threads:[~2000-03-28 7:05 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-24 11:18 Greg McGary
2000-03-24 12:08 ` Joern Rennecke
2000-03-24 12:28 ` Greg McGary
2000-03-24 16:18 ` Jeffrey A Law
2000-03-24 16:50 ` Greg McGary
2000-03-24 17:27 ` Jamie Lokier
2000-03-27 12:30 ` Jeffrey A Law
2000-03-27 12:45 ` Mark Mitchell
2000-03-27 13:05 ` Greg McGary
2000-03-27 13:54 ` Geoff Keating
2000-03-27 14:21 ` Greg McGary
2000-03-27 14:30 ` Jeffrey A Law
2000-03-27 19:23 ` Michael Hayes
2000-03-27 14:34 ` Geoff Keating
2000-03-27 22:07 ` Greg McGary
2000-03-28 1:55 ` Richard Henderson
2000-03-28 7:05 ` Jeffrey A Law [this message]
2000-03-28 9:28 ` Greg McGary
2000-03-28 9:48 ` Jeffrey A Law
2000-03-28 11:30 ` Geoff Keating
2000-03-28 12:26 ` Greg McGary
2000-03-28 12:30 ` Geoff Keating
2000-03-28 12:59 ` Greg McGary
2000-03-28 13:12 ` Greg McGary
2000-03-29 10:17 ` Joe Buck
2000-03-28 13:41 ` Alan Lehotsky
2000-03-28 14:25 ` Greg McGary
2001-09-04 23:52 ` Tom Tromey
2000-03-28 14:21 ` Greg McGary
2000-03-28 9:57 ` Joern Rennecke
2000-03-29 12:22 ` Jeffrey A Law
2000-03-29 13:35 ` Geoff Keating
2000-04-07 9:57 ` Greg McGary
2000-04-09 11:01 ` Jeffrey A Law
2000-04-09 11:38 ` Greg McGary
2000-04-10 10:13 ` Jeffrey A Law
2000-04-09 16:26 ` Greg McGary
2000-04-10 10:20 ` Jeffrey A Law
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